CN206896389U

CN206896389U - Scoliosis follows closely rod correction bracket system

Info

Publication number: CN206896389U
Application number: CN201621434464.4U
Authority: CN
Inventors: 贺新宁
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-12-26
Filing date: 2016-12-26
Publication date: 2018-01-19
Anticipated expiration: 2026-12-26

Abstract

A kind of scoliosis follows closely rod correction bracket system, including pedicle screw, vertical connecting bar, puncture awl, guide pin, seal wire, expand core, put nail pilot sleeve, hollow flat prominent file, hollow screw tap, upper nail device, hold rod device, hold tight plug screw device, screwdriver, unfolding pressurizing device, incision tissue's retractor and twisting resistance box spanner, pedicle screw includes rivet nut, nail seat, two broken long-armed, plug screw and block, two broken long-armed be connected in nail seat forms U-shaped structure, it is broken long-armed to be provided with recessing mark, recessing mark long-armed is divided into disconnected arm and galianconism by broken, two broken long-armed galianconism outer surface is provided with external screw thread, block is used to be set in two broken long-armed galianconism close to recessing mark one end and provided with the internal thread matched with the external screw thread of galianconism, block is provided with and holds cap aperture.Scoliosis nail rod correction bracket system operatio is flexible, easy, quick, laborsaving, inserts nail rod correction bracket accuracy and reliability is high.

Description

Scoliosis nail stick correction support system

Technical Field

The utility model relates to the technical field of medical equipment for orthopedic surgery, in particular to a spinal column lateral curved nail rod correcting bracket system.

Background

Scoliosis refers to scoliosis and rotational deformity of the spine, and is classified into infant type (0-3 years old), juvenile type (4-10 years old) and juvenile type (more than 10 years old), which seriously affect physical and mental health of children. Adolescent patients with severe scoliosis may undergo orthopedic fusion procedures, which have relatively little effect on spinal development and cardiopulmonary involvement. With the increase of age, the spine deformity is very serious when children grow to adolescence, the operation difficulty is large, the wound is large, and the complications are many. The spinal deformity in the childhood period has good flexibility and is easy to correct. For children with scoliosis and low ages, the development of the spine and the thorax of the children is obviously influenced by orthopedic fusion surgery, so that the proportion of the trunk and the lower limbs is disordered and the children are difficult to accept. Spinal fusion surgery can also affect cardiac and pulmonary development and function in smaller children. The mobility and function of the spine after operation are necessarily affected by degeneration of the adjacent segments of the fused spine, particularly the lumbar segment, kyphosis of the adjacent segments, low back pain, endophytic-related complications and delayed infection, so that scholars at home and abroad try to treat scoliosis of children of low age by using methods without fusing the spine.

Currently, clinical non-fusion scoliosis surgery mainly includes three major types: (1) spinal growth rod technology; (2) vertical extensible titanium rib technology (VEPTR); (3) anterior vertebral body staple technology. Wherein, the former two are non-fusion technologies, the latter are non-complete fusion technologies, and the latter two are rarely used clinically at present due to unsatisfactory clinical curative effect. At present, the most widely applied technology for treating children scoliosis at home and abroad is the growth rod technology. The clinical curative effect of the spine fusion technology for treating the scoliosis of the mature population is satisfactory, but the spine fusion technology for treating the scoliosis of the growing children can cause a plurality of problems and fails, and the main problem is that the continuous development and aggravation of the postoperative scoliosis cannot be controlled, and the phenomenon of 'crankshaft' occurs. In addition, premature fusion causes the upper body of the infant patient to be short and small, influences the development of the heart and lung functions, and is unacceptable for people. The double-rod growing rod technology which is popularized and applied at home at present is considered as a good method once, but the defects of the double-rod growing rod technology are reported in recent years at home and abroad: (1) repeated surgery is required (on average once every 6 months); (2) breaking the rod and unhooking (or pulling out the upper screw); (3) a convex back deformity appears behind the upper junction; (4) a distraction failure; (5) complications such as spontaneous fusion are common; (6) higher infection rate, etc. The recurrence and aggravation of deformity and the distraction failure after correction are common. Three general reasons for failure are: (1) the capability of asymmetric growth regulation and control is not available, the distraction can be realized only by repeated operation, and the distraction can be realized when the growth capability of the convex side of the scoliosis exceeds the distraction force of the concave side. The adult scoliosis treatment only needs to be corrected by mechanical force, and the children scoliosis correction system can provide satisfactory correction effect immediately during operation, and also needs to regulate and control the asymmetric stress at two sides of a scoliosis vertebral body formed by the remaining scoliosis after the operation and the asymmetric growth caused by the asymmetric stress, reverse the effect of the Hueter-Volkman law, namely generate tensile stress at the concave side to promote the growth of the vertebral body end plate at the concave side of the spine, generate compressive stress at the convex side to inhibit the growth of the semi-vertebral body end plate at the convex side, thereby reducing the loss of scoliosis correction or further correcting the scoliosis by self during the growth period of the children after the operation; (2) after the correction operation, the rod is fixed by the upper pedicle screw and the lower pedicle screw, so that a 'bolt pulling' effect is formed on the concave side of the lateral bend, and the growth regulation and control capability of the rod is limited. At present, in a pedicle screw system correcting device for treating scoliosis of children, the upper end and the lower end of a concave side of the scoliosis are pulled by screw bolts after operation, when the concave side is corrected by using distraction force, the upper end and the lower end of the screw bolt are screwed to fix a distraction rod, otherwise, the screw bolt can be retracted. In the initial stage of opening, the concave side vertebral body is under the action of tensile stress, and the concave side of the vertebral body generates compressive stress again along with the growth of the vertebral body and the bolt pulling of the nail rod in the process of time, so that the asymmetric stress is increased on two sides of the immature vertebral body, and the scoliosis of the children is aggravated in turn. Theoretically, to overcome "bolting" a continuous distraction force must be applied to the concave side, however, current growing rod technology does not meet this requirement and relies on repeated surgical distraction corrections (every 6 months), which is certainly harsh to children. More and more users find that the support is more and more difficult after 2 years, and finally the support is completely immobile. (3) The existing correction devices at home and abroad can not provide enough correction stress at the top vertebra part of lateral curvature. Biomechanical studies have demonstrated that longitudinal loading of scoliosis is primarily concentrated in the apical vertebrae and their adjacent superior and inferior vertebral body segments. However, the correction force of the growth rod is mainly concentrated on the upper vertebra and the lower vertebra, so that sufficient correction stress cannot be provided for the top vertebra, the top vertebra is not fixed by pedicle screws, when the growth force of the vertebral end plate on the convex side of the lateral curvature of the vertebral column exceeds the opening correction force of the vertebral body on the concave side, the top vertebra cannot be opened, and the high-force opening can also induce the backward convex deformity of the junction area above the upper vertebral part. The "magnetic control rod" (MCGR) recently studied abroad, which is extended in vitro by magnetic force every 4 months, is the same as the orthopedic principle of the two-rod growing rod. Its advantages are no damage to child caused by multiple operations, no immediate correction of lateral bending, easy separation of screw, breaking of screw, pulling out screw from top, no movement of screw, and convex back deformation of near-end joint.

In summary, the existing non-fusion technique for scoliosis at home and abroad has the following four problems: (1) the asymmetric growth of the lateral bending spine cannot be regulated and controlled, and the lateral bending of the sick children cannot be corrected immediately during the operation. (2) The pedicle screw 'tie-pulling' phenomenon exists on the concave side after operation, the vertebral body can not grow and extend freely along the direction of the correction rod, the correction can not be maintained and not lost or less lost in the whole growth and development period of children, even the scoliosis can not be shaped, the vertebral body is further corrected by self, and the fusion operation is needed to be performed again after the vertebral body is mature. (3) The two ends of the growth rod are only fixed on pedicle screws of upper and lower end vertebrae of the scoliosis in vivo, the top vertebra and the upper and lower adjacent vertebrae are not fixed by pedicle screws, which is a fatal defect, and the side thrust applied to the concave side by the correction rod to the top vertebra and the effect of pressurizing and fixing the convex side of the top vertebra to inhibit the growth of the end plate are lacked. (4) Three incisions of 6-10 cm are required to be cut in the operation of installing the growing rod, the pedicle screw feeding point is exposed, the screw is placed, bone grafting around the pedicle screw is improved in stability, the operation wound is still large, and some patients have complications such as infection and spontaneous fusion.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to overcome the not enough of prior art existence, provide a flexible operation, simple and convenient, swift, laborsaving, put into the nail stick and correct support accuracy and the high scoliosis of stability nail stick and correct the mounting system.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a spinal column lateral bending nail rod correcting bracket system comprises a pedicle screw, a longitudinal connecting rod, a puncture cone, a guide pin, a guide wire, an expansion core, a nail placing guide sleeve, a hollow plano-convex file, a hollow screw tap, an upper nail device, a rod holding device, a screw plug holding device, a screwdriver, a spreading pressurizer, an incision tissue retractor and a torsion-resistant sleeve wrench, wherein the pedicle screw comprises a screw body, a screw seat, two breakable long arms, a screw plug and a nut cap, the screw body is connected with the screw seat, the screw body is solid or hollow, the two breakable long arms are oppositely and fixedly connected on the screw seat to form a U-shaped structure for embedding the longitudinal connecting rod, the two breakable long arms are respectively provided with a concave incising mark which divides the breakable long arms into a broken arm and a short arm, the short arm is connected between the broken arm and the screw seat, the inner surfaces of the two breakable long arms are provided with inner threads extending from the short arm, and the screw plug comprises a thread part and an arc-shaped cushion block, the surface of screw thread portion has the external screw thread that matches with the internal screw thread of breakable long arm, screw thread portion one end has holds the consent, the screw thread portion other end and arc cushion swing joint, the arc cushion is equipped with the arc wall with indulging the arc surface matching of even stick, the short arm surface of two breakable long arms is equipped with the external screw thread, the block is used for the cover to establish the internal screw thread that the short arm that two can break the long arm is close to concave notch one end and is equipped with the external screw thread matching with the short arm, the block is equipped with holds the cap hole.

Above-mentioned scoliosis nail stick corrects support system, preferably, the block is the cask form, and the opening part of cask form block is equipped with to the smooth section of going on the direction of cover on the short arm.

In the scoliosis nail-bar correcting support system, preferably, the screwing direction of the cap is opposite to that of the screw plug.

In the scoliosis nail rod correcting support system, the arc-shaped cushion block is preferably rotatably mounted on the threaded part through a rivet.

The support system is corrected to curved nail stick of backbone side, preferred, the arc cushion includes cushion body and two protruding feet of interval connection on the cushion body, and the arc wall is located between two protruding feet.

In the above scoliosis screw rod correction stent system, preferably, the pedicle screw is a fixed shaft pedicle screw or a movable shaft pedicle screw, a screw body of the fixed shaft pedicle screw is fixedly connected with the screw seat, the screw body is solid or hollow, and the hollow screw body is provided with a guide wire through hole along the axial direction; the nail body of the pedicle screw of the movable shaft is fixedly connected with a ball head, the ball head is movably connected with a nail seat, a ball head pressure pad pressed on the ball head is arranged in the nail seat, a longitudinal connecting rod is embedded into a U-shaped structure of the two breakable long arms, the nail body is solid or hollow, and the hollow nail body is provided with a guide wire through hole along the axial direction.

In the above spinal scoliosis screw rod correcting support system, preferably, two support tables corresponding to the two convex feet are arranged on the inner sides of the two short arms of the pedicle screw or on the ball head pressure pad, the length of the two convex feet is configured to abut against the two support tables so that the arc-shaped cushion block does not press the longitudinal connecting rod, or a space is left between the two support tables so that the arc-shaped cushion block presses the longitudinal connecting rod.

In the above scoliosis screw rod correction support system, preferably, the cushion block body is provided with at least one rotation stopping shoulder which is matched with the U-shaped structure of the pedicle screw to stop the arc cushion block from rotating.

According to the scoliosis nail rod correcting support system, preferably, the tail parts of the two breakable long arms far away from the nail seat are further provided with smooth sections for guiding the screwed plug.

Foretell scoliosis nail stick corrects mounting system, it is preferred, still including holding excellent adjuster, it includes the outer tube and compresses tightly the pole to hold excellent adjuster, is equipped with on the lateral wall that is close to outer tube one end to be used for the card to go into the side direction draw-in groove of indulging the stick, and the outer tube is equipped with and compresses tightly the pole through-hole, and compress tightly the pole through-hole and extend to the side direction draw-in groove from the outer tube other end, and during the installation compresses tightly the pole through-hole, compress tightly pole and outer tube screw-thread fit connection and.

In the scoliosis nail rod correcting bracket system, preferably, one end of the outer pipe, which is far away from the lateral clamping groove, is provided with the expansion part and the threaded hole in the expansion part, and the pressing rod is provided with the expansion section and the external thread matched with the threaded hole of the expansion part of the outer pipe is arranged on the expansion section.

According to the scoliosis nail-bar correcting support system, preferably, one end of the pressing rod is provided with the eighth handheld transverse handle.

In the scoliosis nail-bar correcting bracket system, preferably, the expansion section of the pressing rod is positioned at a position close to the eighth handheld transverse handle.

The scoliosis nail-bar correcting bracket system preferably further comprises a combined screwdriver, the combined screwdriver comprises a solid screwdriver and a hollow screwdriver, the solid screwdriver comprises a second wrench rod and a first screwing component fixedly connected with one end of the second wrench rod, the other end of the second wrench rod is provided with a plug rotating head which can be inserted into a plug holding hole of the plug screw to rotate the plug screw, the hollow screwdriver comprises a hollow spanner rod and a second screwing component fixedly connected with one end of the hollow spanner rod, the other end of the hollow spanner rod is provided with a rotating cap head which can be inserted into a cap holding hole of the cap to rotate the cap, the hollow spanner rod is provided with a through hole which is communicated from one end to the other end, the second spanner rod is arranged in the through hole of the hollow spanner rod in a penetrating way, the rotating plug head of the second wrench rod can be retracted into or extended out of one end of the hollow wrench rod provided with the rotating cap head, the combined screwdriver is also provided with a fixing component for fixing the second wrench rod and the hollow wrench rod.

In the above scoliosis nail-bar correcting support system, preferably, the fixing component comprises a rotation stopping screw, and the rotation stopping screw is installed on the second screwing part in a threaded fit manner and can abut against or loosen the second wrench rod by screwing.

In the scoliosis nail-bar correcting support system, preferably, the second screwing part is provided with a threaded through hole communicated with the through hole of the hollow wrench rod, and the rotation-stopping screw is installed in the threaded through hole.

In the scoliosis nail-bar correcting support system, preferably, the first screwing component is a first screwing disc with a diameter larger than that of the second wrench rod, and the second screwing component is a second screwing disc with a diameter larger than that of the hollow wrench rod.

In the scoliosis nail-bar correcting support system, preferably, the outer circumferential walls of the first screwing disc and the second screwing disc are provided with anti-skid grooves.

The support system for correcting the scoliosis nail rod preferably further comprises an ejector and a fixing frame, wherein the ejector comprises a push-pull arm and a sleeve connected to the push-pull arm, the sleeve is provided with a sleeve through hole used for being sleeved outside the pedicle screw, the push-pull arm comprises an intermediate connecting seat, a connecting rod and an adjusting rod, the connecting rod and the adjusting rod are respectively connected with the intermediate connecting seat through a lockable universal joint, the sleeve is connected to the connecting rod, and the adjusting rod is connected to the fixing frame through a force adjusting assembly capable of adjusting push-pull force.

Above-mentioned scoliosis nail stick corrects support system, preferentially, the one end opening that cup joints the through-hole is equipped with and is used for the card cover in the groove of falling U on the bar of indulging, and the width in the groove of falling U is greater than or equal to the diameter of the bar of indulging.

Preferably, the fixing frame comprises a frame and a mounting assembly for mounting and fixing the frame, the frame is provided with two to four mounting frame edges for fixing the ejector, each mounting frame edge is provided with a plurality of clamping grooves for clamping the adjusting rod, and the clamping grooves are arranged at intervals along the mounting frame edges; the adjusting assembly comprises a third adjusting nut and a fourth adjusting nut, the adjusting rod is a screw rod, the adjusting rod is clamped in the clamping groove, the third adjusting nut and the fourth adjusting nut are arranged on the adjusting rod in a threaded fit mode, and the third adjusting nut and the fourth adjusting nut are arranged on two sides of the mounting frame respectively.

Foretell scoliosis nail stick corrects mounting system, it is preferred, the installation component includes that at least two support fixed establishment, each support fixed establishment include branch and be used for the U type clamp splice of card cover on the operating table, the one end and the frame attach of branch, the other end is connected with U type clamp splice, and screw-thread fit is connected with and supports tightly or loosen the locking screw of operating table through revolving to twist on the U type clamp splice.

In the scoliosis nail rod correcting bracket system, preferably, gaskets are arranged between the third adjusting nut and the mounting frame edge and between the fourth adjusting nut and the mounting frame edge.

The preferable scoliosis nail rod correcting support system is characterized in that the lockable universal joint comprises a spherical head and a lock cap, the lock cap is connected onto the intermediate connecting seat, a spherical cavity is arranged between the lock cap and the intermediate connecting seat, the spherical head is arranged in the spherical cavity, the lock cap is in threaded connection with the intermediate connecting seat and can compress or loosen the spherical head through screwing, and the connecting rod or the adjusting rod is fixedly connected with the spherical head.

In the scoliosis nail-bar correcting bracket system, preferably, the axis of the sleeve is not coincident with the axis of the connecting rod.

In the scoliosis nail-bar correcting bracket system, preferably, the distraction pressurizer comprises a first distraction pressurizing arm and a second distraction pressurizing arm, the device comprises a first connector, a second connector and a supporting rod, wherein the first connector and the second connector are connected to the supporting rod through a displacement adjusting mechanism and can adjust the distance along the supporting rod, a first spreading pressurizing arm is hinged to the first connector in a detachable mode, a second spreading pressurizing arm is hinged to the second connector in a detachable mode, the hinge axes of the first spreading pressurizing arm and the second spreading pressurizing arm are perpendicular to the same plane parallel to the supporting rod, one ends of the first spreading pressurizing arm and the second spreading pressurizing arm are provided with clamping grooves used for clamping longitudinal connecting rods, and a progressive force application mechanism used for tensioning or spreading the first spreading pressurizing arm and the second spreading pressurizing arm is connected between the other ends of the first spreading pressurizing arm and the second spreading pressurizing arm; the displacement adjusting mechanism comprises a threaded hole formed in the second connector, the support rod is rotatably arranged on the first connector, and the support rod penetrates through the threaded hole of the second connector and is provided with threads matched with the threaded hole; the support rod is also provided with a rotary knob; the progressive force application mechanism comprises a first adjusting nut, a second adjusting nut and an adjusting screw rod hinged to a second spreading pressurizing arm, the first spreading pressurizing arm is provided with a positioning groove, the adjusting screw rod is clamped into the positioning groove, and the first adjusting nut and the second adjusting nut are installed on the adjusting screw rod in a matched mode and are respectively arranged on two sides of the positioning groove; the first adjusting nut is positioned on one side, away from the second spreading pressurization arm, of the positioning groove, the first adjusting nut is provided with a screwing part convenient for screwing, and a gasket positioned between the first adjusting nut and the first spreading pressurization arm is sleeved on the adjusting screw rod; the first spreading pressurization arm is provided with a first hinge through hole, the first connector is fixedly connected with a first connecting screw rod, one end of the first connecting screw rod is fixedly connected with the first connector, the other end of the first connecting screw rod penetrates through the first hinge through hole to be connected with a first locking nut, and the first connecting screw rod is provided with a first smooth section matched with the first hinge through hole; a second hinge through hole is formed in the second spreading pressurization arm, a second connector is fixedly connected with a second connecting screw rod, one end of the second connecting screw rod is fixedly connected with the second spreading pressurization arm, the other end of the second connecting screw rod penetrates through the second hinge through hole to be connected with a second locking nut, and a second smooth section matched with the second hinge through hole is formed in the second connecting screw rod; the section of the first spreading pressurization arm from the first hinge through hole to the clamping groove is a first inclined section, the section of the second spreading pressurization arm from the second hinge through hole to the clamping groove is a second inclined section, and the first inclined section and the second inclined section are switched between two installation modes of gradually approaching to each other or gradually departing from each other by changing the direction of the first connecting screw rod passing through the first hinge through hole and the direction of the second connecting screw rod passing through the second hinge through hole;

the expansion core comprises a cylinder with a guide pin through hole along the axis, and the outer diameter of the cylinder is the same as that of a screw seat of the pedicle screw; one end of the cylinder is conical, and the other end of the cylinder is a handheld part;

the screw placing guide sleeve comprises a cylinder body with a pedicle screw through hole along the axis, one end of the cylinder body is in an annular saw-tooth shape, the other end of the cylinder body is fixedly connected with a first handheld transverse handle, the length of the cylinder body is smaller than that of the cylinder body of the expansion core, and the length of the cylinder body is larger than the total length of a screw body, a screw seat and a breakable long arm of the pedicle screw;

the hollow flat protruding file comprises a file rod with a guide pin through hole along the axis, the outer diameter of the file rod is smaller than the outer diameter of the nail body of the pedicle screw, one end of the file rod is fixedly connected with a file head, the other end of the file rod is fixedly connected with a second handheld transverse handle, the end face of the file head is provided with grinding teeth, and the periphery of the file head is provided with drilling pattern threads;

the hollow screw tap comprises a screw tap rod with a guide pin through hole along the axis, the outer diameter of the screw tap rod is the same as the outer diameter of the screw body of the pedicle screw, one end of the screw tap rod is fixedly connected with a screw tap head, the other end of the screw tap rod is fixedly connected with a third handheld transverse handle, and the periphery of the screw tap head is provided with a threaded tooth path matched with the screw body of the pedicle screw;

the rod holder comprises a hollow rod guide pipe and a pressing rod which can be inserted into the hollow rod guide pipe and used for tightly pressing the longitudinal connecting rod, one end of the hollow rod guide pipe is provided with a transverse hole, the transverse hole is used for inserting a connector of the longitudinal connecting rod, the other end of the hollow rod guide pipe is expanded and provided with a threaded hole, one end of the pressing rod is provided with a fifth handheld transverse handle, and the part, close to the fifth handheld transverse handle, of the pressing rod is expanded and provided with an external thread matched with the threaded hole at the expanded part of the hollow rod guide pipe;

the screw plug holding device is a round bar, two elastic sheets are oppositely arranged at one end of the round bar, and a sixth hand-held handle is arranged at the other end of the round bar; the shape formed by the two oppositely arranged elastic sheets is matched with the shape of the holding plug hole, and the two elastic sheets are used for being inserted into the holding plug hole to hold the screw plug;

the anti-torque sleeve wrench comprises an anti-torque handle and an anti-torque sleeve, the anti-torque sleeve is a cylinder body which can be sleeved on the periphery of the pedicle screw, one end of the anti-torque sleeve is provided with two symmetrical inverted U-shaped grooves used for clamping the longitudinal connecting rod, and the anti-torque handle is fixedly connected to the other end of the anti-torque sleeve and is perpendicular to the anti-torque sleeve;

the screwdriver comprises a wrench rod and a seventh handheld transverse handle fixedly connected to one end of the wrench rod, and the other end of the wrench rod can be inserted into a holding plug hole of the plug screw to rotate the plug screw; the wrench rod is provided with more than one expansion guide part which is used for guiding in sliding fit with the inner hole of the anti-rotation sleeve;

the puncture awl comprises a puncture sleeve and a puncture awl needle, the puncture sleeve is a hollow tube, the front end of the puncture sleeve is conical, an expanded holding part is arranged at the rear end of the puncture sleeve, the hollow part in the holding part is expanded and is provided with an internal thread, the puncture awl needle is needle-shaped, the front end of the puncture awl needle is conical, the tail end of the puncture awl needle is expanded and is provided with an external thread, the puncture awl needle is inserted into the puncture sleeve, when the external thread at the tail end of the puncture awl needle is matched and matched with the internal thread at the rear end of the puncture sleeve, the conical tip at the front end of the puncture awl needle is exposed out of the front end of the puncture sleeve and is matched with the conical at the front end of;

the guide pin is needle-shaped and is used for being inserted into the entrance of the vertebral pedicle through the puncture cannula to determine the position for placing the screw, and the surface of the guide pin is provided with scales;

the screw feeder comprises a stay bar, a plug head fixedly connected to one end of the stay bar and a fourth handheld transverse handle fixedly connected to the other end of the stay bar, a rotatable locking arm pipe is sleeved on the stay bar, an external thread matched with an internal thread on the inner surface of a breakable long arm is arranged on the outer surface of one end, close to the plug head, of the locking arm pipe, a rotating cap used for rotating the locking arm pipe is fixedly connected to the other end of the locking arm pipe, a screw guide ring and a rotating handle are sleeved on the locking arm pipe, the screw guide ring is located on one side close to the plug head, the rotating handle is located on one side close to the fourth handheld transverse handle, the outer diameter of the screw guide ring is identical to the outer diameter of a screw seat of a pedicle screw, a locking screw for tightly pressing or loosening the stay bar through screwing is further arranged on the locking arm pipe, and the screw feeder is further provided with a guide wire through hole which penetrates through the plug; the plug head is also provided with a bulge, the bulge is used for inserting into a ball head of the movable shaft pedicle screw to screw down a screw body of the movable shaft pedicle screw, and the guide wire through hole penetrates through the bulge;

the guide wire is a slender wire, the diameter of the guide wire is less than or equal to that of the guide pin, and the length of the guide wire is greater than that of the guide pin;

the incision tissue retractor comprises a handle and an arc-shaped pulling plate, wherein the arc-shaped pulling plate is used for being attached to the outer surface of a breakable long arm of a pedicle screw and inserted into a minimally invasive incision; the hinged part is provided with a gear taking a hinged shaft as a rotating shaft, a toothed plate arranged in a sliding manner is arranged in the U-shaped groove, and a compression spring which elastically pushes the toothed plate to be meshed with the gear is arranged between the handle and the toothed plate; the bottom of the U-shaped groove is provided with a counter bore, a compression spring is arranged in the counter bore, and two ends of the compression spring are respectively abutted against the bottom wall of the counter bore and the toothed plate; the handle is connected with a balance plate which is used for being attached to the surface of skin to prevent the incision tissue retractor from falling laterally, a clamping part with an elastic clamping groove is arranged on the balance plate, and the handle is clamped in the elastic clamping groove.

Compared with the prior art, the utility model has the advantages of: the utility model discloses a spinal lateral curvature nail stick corrects mounting system can put into pedicle of vertebral arch screw and indulge even stick through the percutaneous wicresoft to carry out correction immediately to spinal lateral curvature, carry out growth inhibition to the protruding side of apical vertebra, the asymmetric growth of adjustment spinal lateral curvature, other centrums can be followed and indulged even stick slip, can grow freely and extend. Wherein, but the block threaded connection of pedicle of vertebral arch screw is close to the one end of concave notch in the forearm, holds tightly two forearm of pedicle of vertebral arch screw and compresses tightly the plug screw, can prevent effectively that the plug screw is become flexible to withdraw from, can improve the steadiness that the support was corrected to the nail stick greatly, obviously reduces the internal fixation and becomes flexible, cracked incidence, prolongs the effective internal fixation orthopedic time of the support is corrected to the nail stick. The scoliosis nail rod correction support system is simple in structure, flexible, simple, convenient, rapid and labor-saving to operate, and the minimally invasive nail rod correction support system is small in wound, so that damage to sick children can be reduced, and the incidence rate of complications such as spontaneous fusion and infection is reduced.

Drawings

Fig. 1 is a schematic sectional view of a fixed shaft pedicle screw.

Fig. 2 is a schematic sectional structure view of a movable shaft pedicle screw.

Fig. 3 is a schematic structural view of a nail body and a ball head of the pedicle screw of the movable shaft.

Fig. 4 is a schematic sectional structure view of the plug screw.

Fig. 5 is a schematic perspective view of the screw plug.

Fig. 6 is a schematic perspective view of the cap.

Fig. 7 is a schematic cross-sectional structure of the cap.

Fig. 8 is a schematic perspective view of the one-way fixation pedicle screw and the longitudinal rod.

FIG. 9 is a schematic cross-sectional view of a single-direction pedicle screw and a longitudinal rod.

Fig. 10 is a schematic perspective view of the one-way sliding pedicle screw and the longitudinal rod.

FIG. 11 is a schematic cross-sectional view of a one-way sliding pedicle screw in combination with a longitudinal rod.

Fig. 12 is a schematic perspective view of the universal pedicle screw and the longitudinal rod.

FIG. 13 is a schematic cross-sectional view of the universal pedicle screw and the rod.

FIG. 14 is a perspective view of the universal sliding pedicle screw and the longitudinal rod.

FIG. 15 is a schematic cross-sectional view of a universal sliding pedicle screw in combination with a longitudinal rod.

FIG. 16 is a schematic view of the structure of a longitudinally connecting rod.

Fig. 17 is a front view of the distractor.

Fig. 18 is a side view of the distractor.

Fig. 19 is a perspective view of the distracting and pressurizing device.

Fig. 20 is a schematic structural view of the puncture cone.

Fig. 21 is a sectional structure diagram of the puncture cone.

FIG. 22 is a schematic diagram of a lead structure.

Fig. 23 is a perspective view of the expansion core.

Fig. 24 is a cross-sectional structural view of the expansion core.

Fig. 25 is a structural schematic view of the nail placing guide sleeve.

FIG. 26 is a schematic view of the structure of a hollow rasp file.

Fig. 27 is a schematic structural view of a hollow tap.

FIG. 28 is a schematic view of a hollow tacker without bumps.

FIG. 29 is a schematic view of a hollow tacker with bumps.

Fig. 30 is a schematic view of a structure of a guidewire.

FIG. 31 is a schematic view of the structure of the rod holder.

FIG. 32 is a schematic sectional view of the rod holder.

Fig. 33 is a schematic structural view of the screw stopper holding device.

Fig. 34 is a schematic structural view of a screwdriver.

Fig. 35 is a schematic structural view of a torque-resistant socket wrench.

Figure 36 is a front view schematic of an incised tissue retractor.

Figure 37 is a top view schematic of an incised tissue retractor.

FIG. 38 is a schematic view of the staple tail breaking pliers.

Fig. 39 is a front view of the rod holder.

FIG. 40 is a schematic sectional view of the rod holder.

Fig. 41 is a front view schematically showing the structure of the combination screwdriver.

Fig. 42 is a sectional structure diagram of the combination driver.

Fig. 43 is a front view of the ejector.

Fig. 44 is a partial sectional structural view of the ejector.

Fig. 45 is a schematic perspective view of the ejector mounted in the slot of the mounting frame.

Fig. 46 is a perspective view of the mounting bracket mounted on the operating table.

FIG. 47 is a schematic view of the position of a nail in the example of nail placement.

Fig. 48 is a top view of the nail rod correcting bracket for correcting the lateral curvature of the spine in the nail placing example.

FIG. 49 is a schematic side view of the nail rod correcting bracket of the nail placing example after correcting the lateral curvature of the spine.

FIG. 50 is a schematic sectional view of a ball pressure pad of a pedicle screw with a movable shaft.

Illustration of the drawings:

1. pedicle screws; 10. a nail body; 11. a nail seat; 12. the long arm can be broken; 121. breaking the arm; 122. a short arm; 13. a plug screw; 131. a threaded portion; 132. an arc-shaped cushion block; 1321. an arc-shaped slot; 1322. a cushion block body; 1323. a convex foot; 1324. a rotation stopping shoulder; 14. a U-shaped structure; 15. a ball head; 16. a ball head pressure pad; 17. holding the plug hole; 18. concave cutting marks; 19. capping; 191. a cap holding hole; 120. a support table; 2. longitudinally connecting rods; 20. a rod body; 21. a connector; 3. puncturing a awl; 31. puncturing a cannula; 32. puncturing a conical needle; 33. a hand-held portion; 4. guiding a needle; 5. expanding the core; 51. a cylinder; 6. a nail placing guide sleeve; 61. a cylinder; 62. a first handheld transverse handle; 7. a nail feeding device; 71. a stay bar; 72. a plug head; 73. a fourth hand-held transverse handle; 74. locking the arm tube; 75. rotating the cap; 76. a screw guide ring; 77. rotating the handle; 78. locking screws; 79. a protrusion; 8. a screwdriver; 81. a spanner bar; 82. a seventh handheld transverse handle; 83. a polygonal bulge; 84. an enlarged guide portion; 9. a guide wire; 100. a hollow plano-convex file; 101. filing a rod; 102. a second hand-held transverse handle; 103. filing the head; 200. hollow tapping; 201. tapping a rod; 202. a third hand-held transverse handle; 203. tapping head; 300. a screw stopper is tightly held; 301. a sixth handle; 302. a spring plate; 400. a rod holder; 401. a pressure lever; 402. a rod body; 403. a second enlargement; 404. a fifth hand-held transverse handle; 405. a hollow guide rod pipe; 406. a pipe body; 407. a first enlargement; 408. a transverse hole; 500. an anti-torque socket wrench; 501. an anti-rotation sleeve; 502. an anti-rotation handle; 503. a U-shaped groove is inverted; 600. opening the pressurizer; 601. a first spreader compression arm; 6011. positioning a groove; 602. a second spreader compression arm; 6021. a first connecting ear; 6022. a second connecting ear; 603. a first connector; 604. a second connector; 605. a support rod; 6051. rotating the knob; 606. a card slot; 607. a first adjusting nut; 6071. a screwing part; 608. a second adjusting nut; 609. adjusting the screw rod; 610. a gasket; 611. a first lock nut; 612. a second lock nut; 700. an incised tissue retractor; 701. a handle; 702. an arc-shaped pulling plate; 703. an elastic connecting arm; 704. a connecting rod; 705. a bolt assembly; 706. a gear; 707. a toothed plate; 708. a compression spring; 800. nail tail folding pliers; 900. combining a screwdriver; 901. a second wrench rod; 902. a first screw member; 903. a plug head is rotated; 904. a hollow spanner bar; 905. a second screw member; 906. turning the cap head; 907. a rotation stopping screw; 1000. a pushing device; 1001. a sleeve; 10011. a U-shaped groove is inverted; 1002. a push-pull arm; 10021. a connecting rod; 10022. a middle connecting seat; 10023. adjusting a rod; 10024. a third adjusting nut; 10025. a fourth adjusting nut; 10026. a spherical head; 10027. a lock cap; 1100. a fixed mount; 1101. a frame; 11011. installing a frame edge; 11012. a card slot; 1102. a supporting and fixing mechanism; 11021. a strut; 11022. a U-shaped clamping block; 11023. locking the screw; 1200. a rod holding adjuster; 1201. an outer tube; 12011. a lateral clamping groove; 12012. a swelling part; 1202. a hold down bar; 12021. an expansion section; 1203. and an eighth handheld transverse handle.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific embodiments.

The scoliosis nail-rod correcting bracket system of the embodiment comprises a pedicle screw 1, a longitudinal connecting rod 2, a puncture cone 3, a guide pin 4, an expansion core 5, a nail placing guide sleeve 6, an upper nail device 7, a screwdriver 8, a guide wire 9, a hollow planoconvex file 100, a hollow screw tap 200, a tight holding screw plug device 300, a rod holding device 400, a torsion-resistant sleeve wrench 500, a spreading pressurizer 600, an incision tissue retractor 700, a nail tail clamp 800, a combined screwdriver 900, a top pusher 1000, a fixing frame 1100 and a rod holding adjuster 1200, as shown in figures 1 to 5, the pedicle screw 1 comprises a screw body 10, a screw seat 11, two breakable long arms 12, a screw plug 13 and a cap 19, the screw body 10 is connected with the screw seat 11, the two breakable long arms 12 are oppositely and fixedly connected with the screw seat 11 to form a U-shaped structure 14, the longitudinal connecting rod 2 is embedded in the U-shaped structure 14, the screw plug 13 is used for pressing or not pressing the longitudinal connecting rod 2 in the U-shaped structures 14 of the two breakable long arms 12, when the screw plug 13 compresses the longitudinal connecting rod 2, the longitudinal connecting rod 2 and the pedicle screw 1 are relatively fixed, and when the screw plug 13 does not compress the longitudinal connecting rod 2, the longitudinal connecting rod 2 and the pedicle screw 1 can slide relatively. The nail body 10 is solid or hollow, the hollow nail body 10 is provided with a guide wire 9 through hole along the axial direction, and the nail body 10 is provided with screw threads. The nail seat 11 is in a short cylindrical shape, and the two breakable long arms 12 are fixedly connected with the nail seat 11.

The positions, close to the nail seat 11, of the two breakable long arms 12 are provided with concave notches 18, the concave notches 18 divide the two breakable long arms 12 into a broken arm 121 and a short arm 122, the short arm 122 is fixedly connected with the nail seat 11, the broken arm 121 can be broken at the concave notches 18, and then the broken arm 121 is removed. The inner surfaces of the two breakable long arms 12 of the pedicle screw 1 are provided with internal threads extending from the broken arm 121 to the short arm 122, and the ends of the two short arms 122 close to the concave notch 18 are provided with external threads. The screw plug 13 comprises a threaded portion 131 and an arc-shaped pad 132, the outer surface of the threaded portion 131 has an external thread matching with the internal thread of the inner surface of the breakable long arm 12, one end of the threaded portion 131 has a holding plug hole 17, the holding plug hole 17 is a polygonal hole, the other end of the threaded portion 131 is movably connected with the arc-shaped pad 132, the threaded portion 131 and the arc-shaped pad 132 can rotate relatively, and preferably, the arc-shaped pad 132 is rotatably mounted on the threaded portion 131 through a rivet. The arc cushion block 132 is provided with an arc groove 1321 matched with the arc surface of the longitudinal connecting rod 2, so that the arc cushion block 132 has good pressing effect when pressing the longitudinal connecting rod 2, and can play a good guiding role when not pressing the longitudinal connecting rod 2. The tail parts of the two breakable long arms 12, which are far away from the nail seat 11, are also provided with smooth sections, and when the screw plug 13 is inserted along the space between the breakable long arms 12, the smooth sections play a role in guiding the screw plug 13.

As shown in fig. 6 and 7, the cap 19 is cylindrical, the inner wall of the cap 19 has an internal thread matching the external thread of the short arm 122, and the opening of the cap 19 has a smooth section, so that the cap 19 can be guided when the cap 19 is sleeved on the end of the short arm 122 close to the concave notch 18 and screwed in. The bottom of the cap 19 is provided with a cap holding hole 191, and the cap holding hole 191 is a polygonal hole. When the screw plug 13 is screwed into the two breakable long arms 12 of the pedicle screw 1 and the screw cap 19 is screwed and sleeved at one end of the two short arms 122 of the pedicle screw 1 corresponding to the concave notch 18 after passing through the concave notch 18 and only matching with the internal threads of the short arms 122, the two broken arms 121 of the pedicle screw 1 can be broken and removed, the cap 19 is screwed and sleeved at one end of the two short arms 122 of the pedicle screw 1 corresponding to the concave notch 18, the cap 19 clasps the two short arms 122 of the pedicle screw 1 and compresses the screw plug 13, the screw plug 13 can be effectively prevented from being loosened and withdrawn, and particularly under the condition that the pedicle screw 1 can slide along the longitudinal connecting rod 2, the cap 19. Preferably, the screwing direction of the cap 19 is opposite to the screwing direction of the screw plug 13, that is, the screw rotation direction of the cap 19 is opposite to the screw rotation direction of the screw plug 13, so as to further prevent the screw plug 13 from being loosened and withdrawn.

When the pedicle screw 1 is matched and connected with the longitudinal connecting rod 2, the pedicle screw 1 can be set into a one-way fixed pedicle screw 1, a one-way sliding pedicle screw 1, a universal fixed pedicle screw 1 and a universal sliding pedicle screw 1 according to requirements. The one-way fixed pedicle screw 1 and the one-way sliding pedicle screw 1 adopt a fixed shaft pedicle screw 1, a screw body 10 of the fixed shaft pedicle screw 1 is fixedly connected with a screw seat 11, the screw body 10 is solid or hollow, and the hollow screw body 10 is provided with a guide wire 9 through hole along the axial direction. Because the nail body 10 is fixedly connected with the nail seat 11, the nail body 10 can not move relative to the nail seat 11, and therefore the one-way pedicle screw 1 is formed. The one-way fixed pedicle screw 1 and the one-way sliding pedicle screw 1 are different in that a plug 13 of the one-way fixed pedicle screw 1 compresses the longitudinal connecting rod 2 as shown in fig. 8 and 9, the plug 13 of the one-way sliding pedicle screw 1 is close to the longitudinal connecting rod 2 but does not compress the longitudinal connecting rod 2 as shown in fig. 10 and 11, and the one-way sliding pedicle screw 1 and the longitudinal connecting rod 2 can relatively slide along the arrangement direction of the longitudinal connecting rod 2.

The universal fixed pedicle screw 1 and the universal sliding pedicle screw 1 both adopt a movable shaft pedicle screw 1, a screw seat 11 of the movable shaft pedicle screw 1 is of a hollow structure, a ball head 15 and a ball head pressure pad 16 are arranged in the screw seat, a screw body 10 is fixedly connected with the ball head 15, the ball head pressure pad 16 is pressed on the ball head 15, a longitudinal connecting rod 2 is embedded into a U-shaped structure 14 of two breakable long arms 12 and is directly pressed on the ball head pressure pad 16, the screw body 10 is solid or hollow, the hollow screw body 10 is provided with a guide wire 9 through hole along the axial direction, and a polygonal groove is formed in the ball head 15. When the nail body 10 is hollow, the ball head pressure pad 16 is also hollow. The universal fixed pedicle screw 1 and the universal sliding pedicle screw 1 are different in that as shown in fig. 12 and 13, a plug 13 of the universal fixed pedicle screw 1 compresses a longitudinal connecting rod 2, and the longitudinal connecting rod 2 compresses a ball head 15 to fix a screw body 10, as shown in fig. 14 and 15, the plug 13 of the universal sliding pedicle screw 1 does not compress the longitudinal connecting rod 2, the longitudinal connecting rod 2 does not compress the ball head 15, two convex feet 1323 of the plug 13 are pressed against a supporting platform 120 of a ball head pressure pad 16 to compress the ball head pressure pad 16, the ball head pressure pad 16 compresses the ball head 15, the screw body 10 is fixed, and the universal sliding pedicle screw 1 and the longitudinal connecting rod 2 can relatively slide along the arrangement direction of the longitudinal connecting rod 2.

In this embodiment, as shown in fig. 4 and 5, the arc-shaped spacer 132 includes a spacer body 1322 and two protruding legs 1323 connected to the spacer body 1322 at intervals, and the arc-shaped slot 1321 is disposed between the two protruding legs 1323.

Two supporting platforms 120 (see fig. 50) are arranged on the inner sides of the two short arms 122 of the pedicle screw 1 or the ball head pressure pad 16, the two supporting platforms 120 correspond to the positions of the two convex feet 1323 respectively, the length of the two convex feet 1323 is configured to be abutted against the two supporting platforms 120 so that the arc-shaped cushion block 132 does not press the longitudinal connecting rod 2, or a space is reserved between the two convex feet 1323 and the two supporting platforms 120 so that the arc-shaped cushion block presses the longitudinal connecting rod 2. The arc cushion block 132 with the convex feet 1323 with different lengths is adopted to realize the compression or non-compression of the longitudinal connecting rod 2, the screw plug 13 only needs to be screwed in the two cases, the position of the screw plug 13 does not need to be adjusted, and the operation is greatly facilitated.

Further, two rotation stopping shoulders 1324 which are matched with the U-shaped structure 14 of the pedicle screw 1 to prevent the arc-shaped cushion block 132 from rotating are arranged on the cushion block body 1322, the two rotation stopping shoulders 1324 are symmetrically arranged, and the rotation stopping shoulders 1324 are matched with the U-shaped structure 14 to play a role in guiding, so that the arc-shaped groove 1321 is just aligned to the outer surface of the longitudinally-connected rod 2 in a clamping manner.

Compared with the fixed shaft pedicle screw used in the existing open surgery, the smooth section at the tail end of the breakable long arm 12 plays a role in guiding the screw plug 13, so that the screw plug 13 can be conveniently screwed in; the pedicle screw 1 is provided with a short cylindrical screw seat 11, and the screw seat 11 plays a role in controlling the direction of the pedicle screw 1 when sliding in the screw placing guide sleeve 6; the nail body 10 is solid or hollow, the solid action force of the nail body 10 is stronger than that of the hollow action force, the hollow nail body 10 can be screwed in along the guide wire 9, and the nail placing accuracy is high; preferably, in order to better break the breakable long arms 12 of the pedicle screw 1, concave notches 18 are provided at one ends of the two breakable long arms 12 of the pedicle screw 1 close to the screw seat 11, and the weak points of the concave notches 18 can break the breakable long arms 12. After the two broken arms 121 of the pedicle screw 1 are broken off and removed, the cap 19 can cover and tightly screw one end of the short arm 122 of the pedicle screw 1 corresponding to the concave notch 18, tightly hold the two short arms 122 of the pedicle screw 1 and compress the plug screw 13, so as to prevent the plug screw 13 from loosening and withdrawing. The longitudinal rod 2 is compressed by the screw plug 13 of the one-way fixed pedicle screw 1 and the universal fixed pedicle screw 1, and is used for the side-bending top vertebra of the vertebral column and the convex side fixing rods of the upper and lower adjacent vertebrae, so that side thrust is generated on the concave side, the rotation is removed, the correction is facilitated, and meanwhile, the top vertebra is pressurized on the convex side and the growth is inhibited. The one-way sliding pedicle screw 1 and the screw plug 13 of the universal sliding pedicle screw 1 are close to the longitudinal rod 2 but do not compress the longitudinal rod 2, can slide along the longitudinal rod 2 and are used for fixing the upper and lower end vertebrae of the scoliosis and the pedicles of other vertebral bodies except for the apical vertebrae, and along with growth, the pedicle screw 1 for fixing the vertebral bodies can slide along the longitudinal rod 2 to adjust the free growth of the scoliosis.

In this embodiment, the longitudinally connecting rod 2 is configured as shown in fig. 16, and includes a rod 20 and connecting heads 21 at both ends of the rod 20. The rod 20 is cylindrical, and the connecting head 21 is polygonal and protrudes out of both ends of the rod 20. The size of the connecting head 21 is smaller than that of the rod body 20. The rod 20 may be embedded in the U-shaped structure 14 of the pedicle screw 1 to form a rod-and-nail fixation structure. The longitudinal rod 2 can be cut to a required length or bent to a required arc according to actual requirements, and the longitudinal rod 2 after being cut must keep a connector 21 at one end for being inserted into the transverse hole 408 of the rod holder 400.

As shown in fig. 17 to 19, the spreading presser 600 includes a first spreading presser arm 601, a second spreading presser arm 602, a first connector 603, a second connector 604 and a support rod 605, the first connector 603 and the second connector 604 are connected to the support rod 605 by a displacement adjustment mechanism and can adjust the distance along the support rod 605, the first spreading presser arm 601 is hinged to the first connector 603 in a detachable manner, the second spreading presser arm 602 is hinged to the second connector 604 in a detachable manner, the hinge axes of the first spreading presser arm 601 and the second spreading presser arm 602 are perpendicular to the same plane parallel to the support rod 605, one end of each of the first spreading presser arm 601 and the second spreading presser arm 602 is provided with a locking groove 606 for locking the longitudinal connecting rod 2, a progressive force applying mechanism for tensioning or expanding the first and second spreading pressure arms 601 and 602 is connected between the other ends of the first and second spreading pressure arms 601 and 602.

In this embodiment, the displacement adjusting mechanism includes a threaded hole formed in the second connector 604, the support rod 605 is rotatably mounted on the first connector 603, and the support rod 605 is inserted into the threaded hole of the second connector 604 and provided with a thread engaged with the threaded hole; the support rod 605 is further provided with a rotation knob 6051, and the support rod 605 can be rotated by screwing the support rod 605, so as to adjust the distance between the first connector 603 and the second connector 604, that is, adjust the distance between the first spreading pressure arm 601 and the second spreading pressure arm 602, thereby spreading or pressurizing. The supporting rod 605 may be rotatably mounted on the first connector 603, specifically, the supporting rod 605 is inserted into a rotation-fit through hole formed in the first connector 603, two ends of the rotation-fit through hole on the supporting rod 605 are respectively and fixedly connected with a blocking block, and the supporting rod 605 and the first connector 603 can only rotate relatively but cannot move axially under the action of the blocking blocks at the two ends, so that the second connector 604 can be forced to approach or leave the first connector 603 along the supporting rod 605 when the supporting rod 605 is rotated.

The progressive force application mechanism comprises a first adjusting nut 607, a second adjusting nut 608 and an adjusting screw 609 hinged to the second spreading pressurizing arm 602, the first spreading pressurizing arm 601 is provided with a positioning groove 6011, the adjusting screw 609 is clamped into the positioning groove 6011, and the first adjusting nut 607 and the second adjusting nut 608 are installed on the adjusting screw 609 in a matched mode and are respectively arranged on two sides of the positioning groove 6011. Can force first pressure arm 601 and the second pressure arm 602 that struts to swing around respective articulated axis through twisting first adjusting nut 607 and second adjusting nut 608, and then realize that both are equipped with the tip of draw-in groove 606 and keep away from or be close to each other, in order to strut or pressurize, compare in the mode of adjusting the interval between two draw-in grooves 606 through direct rotation support stick 605, this progressive forcing mechanism can provide bigger power, has strengthened greatly and strut or pressurization effect, and progressive forcing mechanism adopts screw thread formula advancing structure, can realize opening gradually or pressurizing in grades. In the actual operation process, the displacement adjusting mechanism can be adjusted to initially unfold or pressurize, and then a progressive force application mechanism is used for providing larger force to further unfold or pressurize.

In this embodiment, the first adjusting nut 607 is located on the side of the positioning groove 6011 away from the second spreading pressure arm 602, the first adjusting nut 607 is provided with a screwing part 6071 for screwing, the adjusting screw 609 is sleeved with a gasket 610 located between the first adjusting nut 607 and the first spreading pressure arm 601, and when the first adjusting nut 607 pushes the first spreading pressure arm 601, the gasket 610 can improve the uniformity of the force applied to the first spreading pressure arm 601. In addition, the second adjustment nut 608 may also be provided with a screw part 6071.

In this embodiment, a first hinge through hole is formed in the first spreading pressurization arm 601, a first connection screw is fixedly connected to the first connector 603, one end of the first connection screw is fixedly connected to the first connector 603, the other end of the first connection screw passes through the first hinge through hole and is connected to a first locking nut 611, the first locking nut 611 and the first connector 603 cooperate to clamp the first spreading pressurization arm 601, and the first connection screw is provided with a first smooth section cooperating with the first hinge through hole; the second spreading pressurizing arm 602 is provided with a second hinge through hole, the second connector 604 is fixedly connected with a second connecting screw rod, one end of the second connecting screw rod is fixedly connected with the second spreading pressurizing arm 602, the other end of the second connecting screw rod penetrates through the second hinge through hole to be connected with a second locking nut 612, the second locking nut 612 and the second connector 604 are matched to clamp the second spreading pressurizing arm 602, and the second connecting screw rod is provided with a second smooth section matched with the second hinge through hole. The installation manner of the first spreading pressurization arm 601 and the first connector 603, and the second spreading pressurization arm 602 and the second connector 604 has the advantages of simple structure and convenient quick assembly and disassembly.

In this embodiment, a section of the first spreading pressure arm 601 from the first hinge through hole to the locking groove 606 is a first inclined section, a section of the second spreading pressure arm 602 from the second hinge through hole to the locking groove 606 is a second inclined section, by changing a direction in which the first connection screw passes through the first hinge through hole and a direction in which the second connection screw passes through the second hinge through hole, the first inclined section and the second inclined section are switched between two installation modes of gradually approaching each other or gradually departing from each other, when the installation mode in which the first inclined section and the second inclined section gradually approach each other is adopted, ends of the first inclined section and the second inclined section are in contact with outer sides of the two pedicle screws 1 for pressurization, so as to achieve an optimal pressurization effect, when the installation mode in which the first inclined section and the second inclined section gradually depart from each other is adopted, ends of the first inclined section and the second inclined section are in contact with inner sides of the two pedicle screws 1 for spreading, the best distraction effect can be achieved.

In addition, a first connecting ear part 6021 and a second connecting ear part 6022 may be respectively disposed at two sides of the second expanding pressure arm 602, each connecting ear part is provided with a hinge through hole, and in the two installation modes, the adjusting screw 609 is correspondingly hinged in the hinge through holes of the two connecting ear parts through bolts. When the installation mode that the first inclined section and the second inclined section are gradually far away from each other (the two inclined sections are in a shape of Chinese character 'ba'), the adjusting screw 609 is hinged on the first connecting ear 6021, the first adjusting nut 607 and the gasket 610 are installed at one side of the positioning groove 6011 far away from the second spreading pressurizing arm 602, the first adjusting nut 607 is screwed to force the handheld ends (the end opposite to the clamping groove 606) of the first spreading pressurizing arm 601 and the second spreading pressurizing arm 602 to be close to each other, and the ends of the first spreading pressurizing arm 601 and the second spreading pressurizing arm 602 provided with the clamping groove 606 are far away from each other to achieve the spreading function; when the installation mode that the first inclined section and the second inclined section are gradually close to each other (the two inclined sections are in an inverted V shape) is adopted, the adjusting screw 609 is hinged to the second connecting lug part 6022, the first adjusting nut 607 and the gasket 610 are installed on one side of the positioning groove 6011 close to the second spreading pressurizing arm 602, the first adjusting nut 607 is screwed to force the handheld ends (the end opposite to the clamping groove 606) of the first spreading pressurizing arm 601 and the second spreading pressurizing arm 602 to be away from each other, and the ends, provided with the clamping groove 606, of the first spreading pressurizing arm 601 and the second spreading pressurizing arm 602 are close to each other to achieve the pressurizing effect.

When the distraction or pressurization operation is performed, after the pedicle screws 1 and the longitudinal connecting rod 2 are inserted, the first distraction pressurization arm 601 and the second distraction pressurization arm 602 are independently and flexibly inserted through a minimally invasive skin small incision, so that the clamping groove 606 is clamped on the longitudinal connecting rod 2 in a sleeving manner, and then the first connector 603, the second connector 604 and the supporting rod 605 are installed, and the adjusting screw 609 is clamped in the positioning groove 6011 to form the minimally invasive distraction pressurizer 600. When the first spreading pressurization arm 601 and the second spreading pressurization arm 602 are positioned between the two pedicle screws 1, the distance between the first spreading pressurization arm 601 and the second spreading pressurization arm 602 is adjusted to be increased, so that the two pedicle screws 1 can be pushed away from each other, and spreading operation is performed; when the first spreading pressure arm 601 and the second spreading pressure arm 602 are respectively positioned at the outer sides of the two pedicle screws 1, the two pedicle screws 1 can be pushed to approach each other by adjusting and reducing the distance between the first spreading pressure arm 601 and the second spreading pressure arm 602, thereby performing the pressing operation.

The minimally invasive distraction pressurizer 600 has the following advantages:

1. the two spreading pressure arms of the spreading pressure device 600 can be respectively and independently inserted into and bestrided on the longitudinal connecting rod 2 through a minimally invasive small incision, and the operation is simple and rapid.

2. Support stick 605 and connect two through two connectors and strut the loading arm, support stick 605 and play the fulcrum effect, span (width) between the adjustable two arms, the pincers that strut that are used for open operation at present only have a fulcrum, can not adjust, strut the span limited, need lean on tight pedicle of vertebral arch screw 1 with the help of other appurtenance, through rotatory support stick 605 reach the type of falling U draw-in groove 606 that makes two arm front ends, make follow-up strut more accurate, can accurately grasp the height and the dynamics of strutting.

3. The support bars 605 are positioned on different arms, so that the lever acting force for opening is different, the labor-saving degree is different, and the support bars are generally positioned at the position of one quarter of one end of the inverted U-shaped clamping groove 606, so that the opening force is enhanced by 3 times.

4. When in stretching or pressurizing, the stretching or pressurizing force is continuously increased, while the stretching force of the opening forceps in the opening operation is increased in a jumping step manner, so that the stretching force cannot be accurately controlled.

5. When the adjusting nut on the adjusting screw 609 is pressed and moves for 1 mm, the inverted U-shaped clamping grooves 606 of the two arms are expanded for 0.33 mm, the expanding height is accurate to 0.33 mm, and the expanding height and force can be accurately controlled.

6. The operation of separation or pressurization can be gradually carried out in times, after the adjusting nut on the adjusting screw 609 is a certain distance, namely, the adjusting nut is propped open at a certain height, through X-ray perspective, if the propped height is not enough, namely, the vertebral body is not restored enough, the adjusting nut on the adjusting screw 609 can be rotated again, the adjusting nut is further propped open, the gradual propping can be repeated for many times, finally, the requirement after the propping and restoring is met, namely, the anatomical restoration is carried out, the existing propping forceps for the open operation can only be propped open once, the propping forceps are related to the strength of an operator, the propping height is high when the strength of the operator is large, and.

7. Compared with the open surgery's pincers that strut, the utility model discloses a wicresoft struts presser 600 easy operation, flexibility, and the dynamics is big, laborsaving, and the accuracy is high, and the control degree is high, and the rate of resetting is high. According to data analysis of 518 thoracolumbar fracture surgeries completed by the minimally invasive distraction pressurizer, the anatomical reduction rate is over 95%, particularly the reduction rate of bone blocks in a conical tube is over 91%, and the surgery time is shortened to 30-70 minutes and 52 minutes from 60-180 minutes and 90 minutes of the original open surgery. The bleeding is less, the bleeding amount of the original open surgery is 100ml to 600ml, the average is 260ml, and the bleeding amount is reduced to 15ml to 30ml, the average is 25 ml. The hospitalization time of the patient is shortened from 15 days to 21 days, average 14 days, which are required to be hospitalized in the original open operation, to the current 6 days to 14 days, average 9 days.

8. The minimally invasive distraction pressurizer 600 has the functions of distraction and release of the lateral curvature concave side of the spine, pressurization and growth inhibition of the convex side, and reduction of the compressive stress of the lateral curvature concave side and the tensile stress of the convex side of the nail rod support after the lateral curvature correction.

In conclusion, the minimally invasive distraction pressurizer 600 is flexible, simple, convenient, rapid and labor-saving to operate, has a powerful and effective distraction or pressurization effect, is high in accuracy and control degree, saves operation time, reduces pain of a patient, enables the minimally invasive surgery to achieve the distraction or pressurization effect equivalent to that of direct vision in an open surgery, even has a better effect than the open surgery, achieves and exceeds the curative effect of the open surgery due to the fact that the technical problem that the distraction or pressurization and restoration achieve the expected effect is solved, and has the advantages of small wound, less bleeding and quick recovery.

In this embodiment, the puncture awl 3 and the guide pin 4 are used for determining the pin placing position. As shown in fig. 20 and 21, the puncture awl 3 for puncture positioning includes a puncture cannula 31 and a puncture awl needle 32. The puncture sleeve 31 is a hollow tube, the front end of the puncture sleeve is conical, the rear end of the puncture sleeve is provided with an expanded hand holding part 33, the hollow of the hand holding part 33 is expanded and provided with internal threads, the puncture conical needle 32 is needle-shaped, the front end of the puncture conical needle 32 is conical, the tail end of the puncture conical needle 32 is expanded and provided with external threads, the puncture conical needle 32 is inserted into the puncture sleeve 31, and when the external threads at the tail end of the puncture conical needle 32 are matched and matched with the internal threads at the rear end of the puncture sleeve 31, the conical tip at the front end of the puncture conical needle 32 is exposed out of the front end of the puncture sleeve 31 and matched with the. The surface of the puncture cannula 31 is provided with scales, and the insertion depth of the puncture cone 3 can be measured.

As shown in FIG. 22, the guide needle 4 is needle-shaped and is used to insert the puncture awl 32 after it is removed from the puncture cannula 31, thereby determining the needle placement position. The surface of the guide pin 4 is provided with scales. After the guide needle 4 is inserted into the middle of the vertebral body from the puncture cannula 31, the puncture cannula 31 is pulled out, and the guide needle 4 is left.

In this embodiment, the expansion core 5 includes a cylinder 51 having a through hole of the guide pin 4 along the axis, as shown in fig. 23 and 24. The outer diameter of the cylinder 51 is the same as the outer diameter of the nail seat 11 of the pedicle screw 1. One end of the cylinder 51 is conical, and the other end is a hand-held part. The expansion core 5 is screwed in along the guide pin 4 to expand the muscle channel at one time, and the head end reaches the bone surface of the entrance of the vertebral pedicle. Because the skin and deep fascia are cut at 1.5cm of the minimally invasive incision, the dilating core 5 can easily dilate the muscle opening gap, and compared with the traditional gradual dilating, the minimally invasive incision is simple to operate, quick and time-saving.

In this embodiment, the screw guide sleeve 6 comprises a cylindrical body 61 having a through hole for the pedicle screw 1 along the axis, as shown in fig. 25. One end of the cylinder 61 is annular zigzag, the other end is fixedly connected with a first hand-held transverse handle 62, the expansion core 5 is inserted along the guide pin 4, and the screw placing guide sleeve 6 is inserted along the expansion core 5, so the inner diameter of the cylinder 61 is equal to the outer diameter of the expansion core 5 and the outer diameter of the screw seat 11 of the pedicle screw 1.

The length of cylinder 61 is shorter than the length of expansion core 5, it inserts along expansion core 5 to put nail guide sleeve 6, the handheld portion of tail end of expansion core 5 exposes outside the afterbody of putting nail guide sleeve 6, the operator holds the handheld horizontal handle 62 of the first hand of putting nail guide sleeve 6 and glides and makes the annular sawtooth of putting nail guide sleeve 6 point thorn at the vertebral plate, joint apophysis, compress tightly the handheld horizontal handle 62 of the first hand of putting nail guide sleeve 6, it is unmovable to keep putting the annular sawtooth of nail guide sleeve 6, then extract expansion core 5, keep putting nail guide sleeve 6 and guide pin 4, the department of bone entry of guide pin 4 this moment is in the annular sawtooth central point of putting nail guide sleeve 6. The length of the cylinder 61 is larger than the total length of the nail body 10, the nail seat 11 and the breakable long arm 12 of the pedicle screw 1. Therefore, when the pedicle screw 1 is inserted into the screw guide sleeve 6, the tip of the body 10 of the pedicle screw 1 is just flush with the annular serration of the screw guide sleeve 6, and the two breakable long arms 12 of the pedicle screw 1 sink into the cylinder 61.

The guide needle 4 is replaced by a guide wire 9 by the puncture cone 3, and the hollow pedicle screw 1 can be inserted into the vertebral body along the guide wire 9 through the screw guide sleeve 6 and screwed in. When the solid pedicle screw 1 is coaxially inserted along the screw placing guide sleeve 6, accurate positioning can be realized, and the technical problem that the accurate positioning can only be realized by inserting the guide pin 4 into the hollow screw in the prior art is solved. Therefore, the solid and hollow pedicle screws 1 are universally and accurately placed.

In open surgery, it is found that the pointed end of the nail body 10 of the pedicle screw 1 is difficult to insert into a small pedicle entrance due to the unevenness of the articular process, and the cortex is easy to crack and shift when the nail is screwed. The utility model discloses a hollow plano-apophysis file 100 is used for filing flat 4 bone cortex of going into the bone mouth of guide pin to bore into several millimeters in the pedicle of vertebral arch, make the pedicle of vertebral arch bony entry that has the degree of depth of size.

As shown in FIG. 26, the hollow rasp file 100 has a T-shaped structure, and comprises a file rod 101 having a through hole for guiding needle 4 along the axis, wherein one end of the file rod 101 is fixedly connected with a file head 103, and the other end is fixedly connected with a second hand-held transverse handle 102. The end surface of the file head 103 is provided with grinding teeth, and the periphery is provided with drilling pattern gear threads. The hollow file 100 is inserted into the pedicle portal along the guide pin 4 so that the hollow file 100 has an inner diameter slightly larger than the guide pin 4 and an outer diameter of the file shaft 101 smaller than the outer diameter of the body 10 of the pedicle screw 1.

In this embodiment, the hollow tap 200 is used for tapping the opposite nail position, so as to facilitate the insertion of the pedicle screw 1. As shown in fig. 27, the hollow screw tap 200 is a T-shaped structure, and includes a screw tap rod 201 having a through hole for guiding the needle 4 along an axial line, one end of the screw tap rod 201 is fixedly connected with a screw tap head 203, and the other end is fixedly connected with a third hand-held transverse handle 202. The periphery of the screw tap head 203 is provided with a thread tooth path matched with the screw body 10 of the pedicle screw 1. The hollow tap 200 is inserted into the entrance of the pedicle along the guide pin 4, so that the inner diameter of the hollow tap 200 is slightly larger than the guide pin 4, and the outer diameter of the tap rod 201 thereof is the same as the outer diameter of the screw body 10 of the pedicle screw 1. The thread tooth path of the tapping head 203 is matched with the thread of the nail body 10 of the pedicle screw 1. The hollow tap 200 taps the vertebral pedicle vertebral body part along the guide pin 4, and the hollow tap 200 is not needed to be used for tapping for the vertebral pedicle screw 1 with self-tapping capability.

In this embodiment, the hollow nailing device 7 is structured as shown in fig. 28, and includes a stay 71, and a plug 72 and a fourth hand-held transverse handle 73 respectively located at two ends of the stay 71. The stay bar 71 is sleeved with a rotatable locking arm tube 74, the outer surface of one end, close to the plug 72, of the locking arm tube 74 is provided with external threads matched with the internal threads of the inner surface of the breakable long arm 12, the other end of the locking arm tube 74 is fixedly connected with a rotating cap 75 used for rotating the locking arm tube 74, and a locking nut is arranged on the rotating cap 75. When the locking arm tube 74 rotates to the locked position to lock the pedicle screw 1, the locking nut locks the rotating cap 75 to prevent the locking arm tube 74 from withdrawing, and a screw guide ring 76 and a rotating handle 77 are sleeved on the locking arm tube 74, wherein the screw guide ring 76 is positioned at one side close to the plug 72, and the rotating handle 77 is positioned at one side close to the fourth handheld transverse handle 73. The screw guide ring 76 and the rotary handle 77 are fitted over the arm-locking tube 74 to be rotatable independently of each other. In addition, a locking screw 78 which can tightly press or loosen the stay 71 by screwing is arranged on the locking arm pipe 74, and the nailing device 7 is also provided with a guide wire 9 through hole, and the guide wire 9 through hole penetrates through the plug 72, the stay 71 and the fourth handheld transverse handle 73 along the axial direction of the stay 71.

The plug 72 is directly inserted into the bottom of the U-shaped structure 14 of the pedicle screw 1, and the rotating cap 75 is rotated to tightly engage the external threads of the locking arm tube 74 with the internal threads of the inner surface of the breakable long arm 12 of the pedicle screw 1, so as to fix the pedicle screw 1 on the hollow screw driver 7. The outer diameter of the screw guide ring 76 is equal to the outer diameter of the screw seat 11 of the pedicle screw 1 and the inner diameter of the screw placing guide sleeve 6. When the pedicle screw 1 connected with the hollow upper screw device 7 is inserted along the screw placing guide sleeve 6, the screw guide ring 76 also enters the screw placing guide sleeve 6 and is matched with the inner wall of the screw placing guide sleeve 6. Therefore, the screw seat 11 of the pedicle screw 1 is arranged at the middle front end of the screw placing guide sleeve 6, and the screw guide ring 76 is arranged at the rear end, so that when the pedicle screw 1 slides in the screw placing guide sleeve 6, the tip of the screw body 10 is ensured to be aligned with the central point position of the screw placing guide sleeve 6, and the tip of the screw body 10 of the solid pedicle screw 1 is ensured to be accurately inserted into the bony entrance of the pedicle. The annular sawtooth of the screw placing guide sleeve 6 is pricked on the vertebral plate and the articular process cortex bone, the position of the central point is kept not to rotate, after the tip of the screw body 10 is inserted into the bony entrance of the pedicle of vertebral arch, the screw placing guide sleeve 6 can change along with the direction of the screw feeder 7, so that the pedicle of vertebral arch screw 1 is screwed in towards a more exact direction, which is similar to the open screw placing.

When the pedicle screw 1 is a movable shaft pedicle screw 1, the screw seat 11 is movably connected with the screw body 10, and the screw loading operation of the movable shaft pedicle screw 1 cannot be completed by adopting the plug 72. Therefore, the upper nailing device 7 has another preferred embodiment, as shown in fig. 29, the plug 72 of the upper nailing device 7 is further provided with a protrusion 79 for inserting into the groove of the ball head 15 of the movable shaft pedicle screw 1, directly screwing the nail body 10 of the movable shaft pedicle screw 1, and meanwhile, the guide wire 9 passes through the protrusion 79.

In this embodiment, as shown in fig. 30, the guide wire 9 is an elongated wire, the diameter of which is smaller than or equal to the diameter of the guide needle 4, and the length of which is longer than the length of the guide needle 4.

In this embodiment, as shown in fig. 31 and 32, the rod holder 400 includes a hollow rod guide tube 405 and a pressing rod 401 insertable into the hollow rod guide tube 405 for pressing the longitudinal connecting rod 2. The hollow guide rod tube 405 comprises a tube body 406, and one end of the tube body 406 is provided with a transverse hole 408, and the transverse hole 408 is used for inserting the connecting head 21 of the longitudinal connecting rod 2. The other end of the hollow guide rod tube 405 is expanded to form a first expanded part 407, and the first expanded part 407 is provided with a threaded hole. The pressing rod 401 comprises a rod body 402, one end of the rod body 402 is provided with a fifth handheld transverse handle 404, a second expansion part 403 is formed on the pressing rod 401 in an expansion mode close to the fifth handheld transverse handle 404, and the outer surface of the second expansion part 403 is provided with external threads matched with the internal threads of the first expansion part 407 of the hollow guide rod pipe 405; the inner diameter of the first enlarged portion 407 of the hollow guide tube 405 is the same as the outer diameter of the second enlarged portion 403 of the plunger 401.

The hollow guide rod tube 405 is in the shape of an oblate cylinder, i.e. comprising two flat faces and two arcuate faces, as shown in fig. 32. The cross-shaped hole 408 passes through the two arc-shaped surfaces and is perpendicular to and communicated with the axial through hole of the hollow guide rod tube 405. The longitudinal connecting rod 2 can be inserted into the transverse hole 408 to be connected with the rod holder 400, and two edges of the longitudinal connecting rod 2 are flush with two planes of the hollow rod guide tube 405, namely, the distance between the two planes of the hollow rod guide tube 405 is equal to the outer diameter of the longitudinal connecting rod 2.

When the pressing rod 401 is inserted into the hollow guide rod pipe 405, the fifth handheld transverse handle 404 of the pressing rod 401 is rotated, the internal thread and the external thread are meshed, the pressing rod 401 pushes the connector 21 of the longitudinal connecting rod 2 towards one end of the hollow guide rod pipe 405, and the rod holder 400 is connected with the longitudinal connecting rod 2. And another straight longitudinal connecting rod 2 is embedded into the U-shaped structures 14 of the pedicle screws 1 on the same side which are lifted out of the skin, so that the directions of the U-shaped structures 14 of the pedicle screws 1 on the same side are on the same straight line. At this time, the other end of the longitudinal connecting rod 2 connected with the rod holder 400 is vertically placed in the bottom of the U-shaped structure 14 of the pedicle screw 1, and the longitudinal connecting rod 2 is accurately inserted into the U-shaped structures 14 of the pedicle screws 1 which are longitudinally arranged along the vertebral plate surface, so that the rod placing process is smoothly completed. Specifically, it is to be noted that: when the rod holder 400 is connected with one end of the longitudinal connecting rod 2 and the other end is vertically placed in the bottom of the U-shaped structure 14 of the pedicle screw 1, the longitudinal connecting rod 2 is changed from a vertical position to a horizontal position and is inserted into the U-shaped structures 14 of the plurality of pedicle screws 1 longitudinally arranged along the vertebral plate surface, the rod holder 400 is embedded in the U-shaped structure 14 of the breakable long arm 12, the U-shaped structures 14 of the breakable long arms 12 of the pedicle screws 1 on the same side, the longitudinal connecting rod 2 and the rod holder 400 are on the same longitudinal plane, the rod holder 400 can swing along the U-shaped structure 14 on the plane, so that the front end of the longitudinal connecting rod 2 can move up and down on the plane, and the rod placement is flexible, rapid and accurate. The rod holder 400 can rotate the longitudinal connecting rod 2, and the scoliosis is corrected by rotating the longitudinal connecting rod 2.

In this embodiment, the screw plug holder 300 can ensure accurate and rapid screwing of the pedicle screw 1, the screw plug holder 300 is a round bar, the structure of which is shown in fig. 33, one end of the round bar is oppositely provided with two elastic pieces 302, and the other end is provided with a sixth handheld handle 301. The shape formed by the two oppositely arranged elastic sheets 302 is matched with the shape of the holding plug hole 17, and the two elastic sheets 302 are used for being inserted into the holding plug hole 17 to hold the screw plug 13. In order to facilitate the elastic sheets 302 to hold the screw plug 13, the outer diameter of the polygon formed by the two elastic sheets 302 is slightly larger than the inner diameter of the holding plug hole 17, and the screw plug 13 is held by utilizing the elastic force between the two elastic sheets 302 and is accurately screwed into the U-shaped structure 14 of the pedicle screw 1.

In this embodiment, the anti-torque socket wrench 500 can prevent the driver 8 from driving the pedicle screw 1 during tightening of the plug 13, which results in loosening of the pedicle screw 1, as shown in fig. 35, the anti-torque socket wrench 500 includes an anti-torque handle 502 and an anti-torque socket 501 fixedly connected in an L-shape. The anti-rotation sleeve 501 is a hollow structure and is sleeved on the periphery of the pedicle screw 1, so that the inner diameter of the anti-rotation sleeve 501 is slightly larger than the outer diameter of the screw seat 11 of the pedicle screw 1. One end of the anti-rotation sleeve 501, which is far away from the anti-rotation handle 502, is provided with symmetrical inverted U-shaped grooves 503 for clamping the longitudinal connecting rod 2. An expansion core 5 is inserted through a minimally invasive incision, a conical part at the front end of the expansion core 5 is arranged between two breakable long arms 12 of the pedicle screw 1, a torsion-resistant socket wrench 500 is inserted along the expansion core 5, the two breakable long arms 12 which are sleeved on the pedicle screw 1 slide in, and an inverted U-shaped groove 503 is used for clamping a longitudinal rod 2; when the screwdriver 8 is screwed down on the screw plug 13 to press the longitudinal rod 2, the torsion-resistant socket wrench 500 resists against the longitudinal rod, and the pedicle screw 1 is prevented from loosening along with the screwdriver 8. Compared with the traditional pressure-resistant socket wrench, the central through hole of the anti-rotation socket 501 of the anti-torque socket wrench 500 of the utility model completely meets the requirement that the breakable long arm 12 of the pedicle screw 1 is inserted into the through hole; the traditional pressure-resistant socket wrench has a large head end through hole and limited length, and a small tail end through hole only meets the insertion of a screw tightening plug wrench, so that the head end through hole can be sleeved in a common pedicle screw 1 but cannot be sleeved in a long-arm pedicle screw 1. After the anti-torque socket wrench 500 is sleeved on the periphery of the pedicle screw 1, the scoliosis can be corrected by pushing the vertebral body, so that the rod can be placed conveniently.

In this embodiment, as shown in fig. 34, the screwdriver 8 includes a wrench rod 81 and a seventh horizontal handle 82 fixedly connected to one end of the wrench rod 81, and the other end of the wrench rod 81 can be inserted into the holding hole 17 of the screw plug 13 to rotate the screw plug 13 to press the longitudinal connecting rod 2. Specifically, the other end of the wrench rod 81 has a polygonal protrusion 83, and the shape of the polygonal protrusion 83 matches the shape of the holding hole 17, so that the polygonal protrusion 83 can be inserted into the holding hole 17 of the screw plug 13, and the seventh handheld cross handle 82 is rotated to screw the screw plug 13 along the space between the two breakable long arms 12 of the pedicle screw 1, thereby compressing the longitudinal rod 2. Further, the wrench rod 81 is provided with 2-3 expansion guide parts 84 which are used for guiding the inner hole of the anti-rotation sleeve 501 in a sliding fit mode, the expansion guide parts 84 are cylindrical, the diameter of each expansion guide part 84 is the same as the inner diameter of the anti-rotation sleeve 501 of the anti-torque sleeve wrench 500, after the screwdriver 8 is inserted into the anti-rotation sleeve 501 for combination, the front end of the screwdriver 8 is inserted into the holding plug hole 17 of the pedicle screw 1, the anti-torque sleeve wrench 500 can slide down along the screwdriver 8 to sleeve the pedicle screw 1, the inverted U-shaped groove 503 of the anti-torque sleeve wrench 500 clamps the longitudinal connecting rod 2, the expansion guide parts 84 of the screwdriver 8 can play a guide role in resisting the torque sleeve wrench 500, and operation is more convenient and labor-saving.

In this embodiment, the incision tissue retractor 700 is used for retracting minimally invasive incision tissue, as shown in fig. 36 and 37, the incision tissue retractor 700 includes a handle 701 and an arc-shaped pulling plate 702 for fitting the outer surface of the breakable long arm 12 of the pedicle screw 1 and inserting into a minimally invasive incision, one end of the handle 701 is provided with two elastic connecting arms 703 arranged at intervals, a U-shaped groove is formed between the two elastic connecting arms 703, the arc-shaped pulling plate 702 is fixedly connected with a bent connecting rod 704, the connecting rod 704 has a hinge portion, and the hinge portion is inserted into the U-shaped groove and is hinged to the two elastic connecting arms 703 in a lockable manner through a bolt assembly 705. Specifically, coaxial through holes are formed in the two elastic connecting arms 703, through holes are also formed in the hinged portion, the bolt assembly 705 penetrates through the through holes of the two elastic connecting arms 703 and the hinged portion, when the bolt assembly 705 is in a loosening state, the arc-shaped pulling plate 702 can rotate around the hinged shaft to further adjust the angle between the bolt assembly 705 and the handle 701, and after the angle is adjusted, the bolt assembly 705 is screwed down, so that the two elastic connecting arms 703 can clamp the hinged portion of the connecting rod 704, and the angle between the arc-shaped pulling plate 702 and the handle 701 is fixed. When the vertebral pedicle screw retractor is used, the arc-shaped pulling plate 702 is inserted into a minimally invasive incision along the outer surface of the breakable long arm 12 of the vertebral pedicle screw 1, and then the incision tissue can be retracted.

In this embodiment, the hinge portion is formed with a gear 706 taking the hinge shaft as a rotation shaft, a toothed plate 707 is slidably disposed in the U-shaped groove, and a pressing spring 708 elastically pushing the toothed plate 707 to mesh with the gear 706 is disposed between the handle 701 and the toothed plate 707. Specifically, a counter bore is formed in the bottom of the U-shaped groove, the compression spring 708 is installed in the counter bore, and two ends of the compression spring 708 abut against the bottom wall of the counter bore and the toothed plate 707 respectively.

Further, the handle 701 can be connected with a balance plate which is used for being attached to the surface of the skin to prevent the incision tissue retractor 700 from falling laterally, a clamping part with an elastic clamping groove is arranged on the balance plate, the handle 701 is clamped in the elastic clamping groove, and the handle 701 and the balance plate can be quickly and conveniently disassembled and assembled. By providing a balancing plate, stability of the incised tissue retractor 700 during use may be greatly improved. After the incision tissue retractor 700 is arranged on the outer arm of the pedicle screw 1, the pedicle screw 1 is pushed to generate thrust on the vertebral body, so that scoliosis can be corrected, and rod placement is facilitated.

In this embodiment, the width of the arc-shaped pulling plate 702 is larger than the width of the breakable long arm 12 of the pedicle screw 1, and the length of the arc-shaped pulling plate 702 can be varied to adapt to different conditions of the human body. The connecting rods 704 are perpendicular to the arcuate pull plates 702.

In this embodiment, the nail tail folding pliers 800, the rod folding device and the cap holding screwdriver for independently twisting the cap 19 are also included. The nail tail folding pliers 800 are shown in fig. 38, and have the same structure as a common sharp nose pliers, an elastic sheet for expanding the two handles is arranged between the two handles, the rod folding device is the prior art, and the structure of the cap holding screwdriver is the same as that of the screwdriver 8, except that one end of the cap holding screwdriver is matched with the cap holding hole 191 of the cap 19 to rotate the cap 19.

In the incised tissue retractor 700 of this embodiment, the arc-shaped pulling plate 702 and the handle 701 may be fixed at a certain angle, and may be fixed at a certain angle at random by changing the angle as needed. After the surgical instrument is inserted into a minimally invasive incision to retract incision tissues, the arc-shaped pull plate 702 is attached to the inner wall of the incision, the handle 701 is attached to the body surface, the angle is fixed by the fixing part after the attachment is completed, a visual incision channel is provided, and surgical personnel can accurately complete minimally invasive operations such as rod placement, screw plug installation, spreader placement, torsion-resistant socket wrench 500 placement, nail breakage and tail wing placement through the minimally invasive incision under direct vision, so that the accuracy and convenience of the surgery can be greatly improved. The incised tissue retractor 700 is simple in structure, easy to manufacture, low in manufacturing cost and convenient to adjust.

The utility model discloses an among the scoliosis nail stick correction support system, pedicle of vertebral arch screw 1, indulge even 2 preferred medical titanium alloy processing that adopt of stick and make, other parts are preferred to adopt medical stainless steel material processing to make, are convenient for disinfect, increase of service life repeatedly. Wherein, the hand-held transverse handle and the handle of each part can be made of high-quality wood materials.

In this embodiment, as shown in fig. 39 and fig. 40, the rod holder adjuster 1200 includes an outer tube 1201 and a pressing rod 1202, a lateral slot 12011 for clamping the longitudinal rod 2 is provided on a side wall near one end of the outer tube 1201, the outer tube 1201 is provided with a through hole of the pressing rod 1202, the through hole of the pressing rod 1202 extends from the other end of the outer tube 1201 to the lateral slot 12011, the pressing rod 1202 is inserted into the through hole of the pressing rod 1202, and the pressing rod 1202 is connected with the outer tube 1201 in a threaded fit manner and can extend into or withdraw from the lateral slot 12011 by screwing.

In this embodiment, an end of the outer tube 1201, which is away from the lateral slot 12011, is provided with an expanded portion 12012, a threaded hole is formed in the expanded portion 12012, and the compressing rod 1202 is provided with an expanded section 12021, and an external thread matching the threaded hole of the expanded portion 12012 of the outer tube 1201 is formed on the expanded section 12021. The rotation of the compressing rod 1202 can make one end of the compressing rod 1202 penetrating the through hole of the compressing rod 1202 extend into the lateral slot 12011 to compress and fix the longitudinal connecting rod 2, or withdraw from the lateral slot 12011 to make the longitudinal connecting rod 2 withdraw from or be loaded into the lateral slot 12011.

In this embodiment, an eighth handheld lateral handle 1203 is disposed at one end of the pressing rod 1202. The enlarged section 12021 of the impaction rod 1202 is positioned adjacent the eighth handheld lateral handle 1203. Preferably, the bottom of the lateral clamping groove 12011 is arc-shaped, and the arc-shaped bottom is in contact with the arc-shaped outer wall of the longitudinal rod 2, so that the longitudinal rod 2 is stably clamped in the lateral clamping groove 12011.

The lateral clamping groove 12011 of the rod holding adjuster 1200 can be embedded into the rod body 20 of the longitudinal rod 2, and the longitudinal rod 2 is fixed by the compression rod 1202, so that the rod holding adjuster 1200 holds the longitudinal rod 2 through a minimally invasive incision, guides the longitudinal rod 2 to penetrate into the U-shaped structure 14 of the pedicle screw 1, and facilitates the rod to pass through by lateral bending of the spine. The rod holding adjuster 1200 has the advantages of simple structure, easy manufacture, convenient operation and convenient and quick guide of the longitudinal connecting rod 2 penetrating into the U-shaped structure 14 of the pedicle screw 1.

Because the transverse hole 408 of the rod holder 400 is matched with the specific connectors 21 at the two ends of the longitudinal rod 2, the longitudinal rod 2 can be held tightly only by the connectors 21 of the longitudinal rod 2 being inserted into the transverse hole 408 longitudinally, when a rod is inserted through a minimally invasive incision, especially a long rod is inserted, one end of the longitudinal rod 2 far away from the rod holder 400 is difficult to penetrate into the U-shaped structure 14 of the pedicle screw 1, especially the difficulty of minimally invasive rod placement is higher, at the moment, the rod holder 1200 can be used for holding the rod body 20 and the connectors 21 of the longitudinal rod 2 through a minimally invasive small incision to guide the rod insertion and assist in orthopedic reduction. During operation, the rod holding adjuster 1200 is inserted through a minimally invasive incision, so that the lateral clamping groove 12011 is clamped and sleeved on the outer portion of the rod body 20 or the connector 21 of the longitudinal connecting rod 2 from the lateral side, and then the compression rod 1202 is adopted to compress and fix the rod. The rod holder 1200 is a supplement to the rod holder 400, making rod threading easier and straightening easier.

In this embodiment, as shown in fig. 41 and 42, the combination driver 900 includes a solid driver and a hollow driver, the solid driver includes a second spanner bar 901 and a first screw member 902 fixedly connected to one end of the second spanner bar 901, the other end of the second spanner bar 901 has a plug head 903 which can be inserted into the plug hole 17 of the plug screw 13 to rotate the plug screw 13, the plug head 903 is a polygonal head which matches the polygonal plug hole 17, the hollow driver includes a hollow spanner bar 904 and a second screw member 905 fixedly connected to one end of the hollow spanner bar 904, the other end of the hollow spanner bar 904 has a cap head 906 which can be inserted into the cap hole 191 of the cap 19 to rotate the cap 19, the cap head 906 is a polygonal head which matches the polygonal cap hole 191, the hollow spanner bar 904 is provided with a through hole which penetrates from one end to the other end, the second spanner bar 901 is rotatably inserted into the through hole of the hollow spanner bar 904, the rotary plug 903 of the second wrench rod 901 is retractable into or out of the end of the hollow wrench rod 904 where the cap 906 is provided, and the combination driver 900 is further provided with a fixing member for fixing the second wrench rod 901 and the hollow wrench rod 904.

In this embodiment, the fixing assembly includes a rotation stop screw 907, and the rotation stop screw 907 is threadedly mounted on the second screwing component 905 and can press against or loosen the second wrench rod 901 by screwing. Specifically, the second screw part 905 is provided with a threaded through hole communicating with the through hole of the hollow wrench rod 904, and a rotation stop screw 907 is installed in the threaded through hole.

In this embodiment, the first screw member 902 is a first screw disk having a larger diameter than the second wrench rod 901, and the second screw member 905 is a second screw disk having a larger diameter than the hollow wrench rod 904. Furthermore, the outer circumferential walls of the first screwing disc and the second screwing disc are provided with anti-skid grooves.

The combined screwdriver 900 can be used for screwing the screw plug 13 and the cap 19 of the pedicle screw 1, when the cap 19 is screwed, the cap 19 is installed on the hollow wrench rod 904, then the second wrench rod 901 is in butt joint with the screw plug 13 which is arranged in the U-shaped structure 14 of the pedicle screw 1, so that the hollow wrench rod 904 slides downwards along the second wrench rod 901, and the cap 19 can be quickly and accurately aligned and sleeved on the pedicle screw 1. The combined screwdriver has the advantages of simple structure, easy manufacture and convenient and labor-saving operation.

The combined screwdriver 900 mainly functions to insert the auxiliary screw plug 13 and the cap 19 through a minimally invasive small incision. Since the cap holding hole 191 is large and shallow, if the cap 19 is held by a cap driver and screwed on the short arm 122 of the pedicle screw 1, it is difficult and time-consuming to perform the above operation through a minimally invasive incision. The second wrench rod 901 of the combined screwdriver 900 is inserted into the through hole of the hollow wrench rod 904, the rotation-stopping screw 907 is tightened to combine the second wrench rod 901 with the insertion of the hollow wrench rod 904, the cap 19 is sleeved on the cap-rotating head 906 of the hollow wrench rod 904, at this time, the combined screwdriver 900 with the cap 191 is inserted into the minimally invasive incision, the plug-rotating head 903 of the second wrench rod 901 is inserted into the holding hole 17 of the screw plug 13, the rotation-stopping screw 907 is loosened, the hollow wrench rod 904 with the cap 19 slides down along the second wrench rod 901, the cap 19 is axially aligned to cover the short arm 122 of the pedicle screw 1, the second screw-rotating part 905 of the hollow wrench rod 904 is rotated to screw the cap 19, at the same time, the first screw-rotating part of the second wrench rod 901 can be rotated in the opposite direction, 902 further counteracts the screwing of the screw plug 13 and the cap 19 (their screw threads are opposite), the cap 19 tightens the two short arms 122 of the pedicle screw 1 in the opposite direction, and simultaneously presses the screw plug 13, preventing the screw 13 from loosening. The combination driver 900 simplifies, and is accurate and quick for minimally invasive procedures to be performed through a minimally invasive small incision and to screw the cap 19 onto the short arm 122 of the pedicle screw 1.

In this embodiment, as shown in fig. 43 to fig. 46, the pedicle screw retaining device further includes an ejector device, the ejector device includes an ejector 1000 and a fixing frame 1100, the ejector 1000 includes a push-pull arm 1002 and a sleeve 1001 connected to the push-pull arm 1002, the sleeve 1001 is provided with a sleeve hole for sleeving the outside of the pedicle screw 1, the push-pull arm 1002 includes an intermediate connection seat 10022, a connection rod 10021 and an adjustment rod 10023, the connection rod 10021 and the adjustment rod 10023 are respectively connected to the intermediate connection seat 10022 through a lockable universal joint, the sleeve is connected to the connection rod 10021, and the adjustment rod 10023 is connected to the fixing frame 1100 through a force adjustment component capable of adjusting the push-pull force.

The pushing device can be matched with a vertebral pedicle screw 1 placed in a vertebral body of a spine to push the vertebral body to approach to the central line of the spine so as to realize the correction of lateral curvature. Connecting rod 10021 and regulation pole 10023 link to each other with intermediate junction seat 10022 through lockable universal joint respectively, can adjust the operating force line, and its suitability is good, can lock connecting rod 10021 and regulation pole 10023 after adjusting well again, make connecting rod 10021 and regulation pole 10023 and intermediate junction seat 10022 fixed connection. The ejection device has the advantages of simple structure, convenient operation and adjustment, labor saving and the like.

In this embodiment, the one end opening of cup jointing the through-hole is equipped with and is used for the card cover in indulging the groove 10011 of U type on excellent 2, should fall the groove 10011 of U type for offering the recess of two symmetries on the barrel-shaped sleeve 1001 annular side wall, the width in the groove 10011 of falling U type is more than or equal to indulges the diameter of even stick 2, the length in the groove 10011 of falling U type approximately accounts for two-thirds to three-fourths of sleeve 1001 length, do benefit to and indulge the stick 2 and pass the groove 10011 of falling U type of pedicle of vertebral arch screw 1.

In this embodiment, the fixing frame 1100 includes a frame 1101 and an installation component for installing and fixing the frame 1101, the frame 1101 has two installation frame edges 11011 for fixing the ejector 1000, the two installation frame edges 11011 are arranged at intervals and are parallel to each other, each installation frame edge 11011 is provided with a plurality of clamping grooves 11012 for clamping the adjusting rod 10023, and the plurality of clamping grooves 11012 are arranged at intervals along the installation frame edges 11011; the adjusting assembly comprises a third adjusting nut 10024 and a fourth adjusting nut 10025, the adjusting rod 10023 is a screw rod, the adjusting rod 10023 is clamped in the clamping groove 11012, the third adjusting nut 10024 and the fourth adjusting nut 10025 are installed on the adjusting rod 10023 in a threaded fit manner, and the third adjusting nut 10024 and the fourth adjusting nut 10025 are respectively arranged on two sides of the installation frame 11011. Adjusting the third adjustment nut 10024 and the fourth adjustment nut 10025 forces the adjustment rod 10023 to move along the slot 11012, thereby adjusting the push-pull force.

In this embodiment, the mounting assembly includes four supporting and fixing mechanisms 1102, each supporting and fixing mechanism 1102 includes a supporting rod 11021 and a U-shaped clamping block 11022 for being clamped and sleeved on the operating table, one end of the supporting rod 11021 is connected with the frame 1101, the other end of the supporting rod 11021 is connected with the U-shaped clamping block 11022, and a locking screw 11023 for screwing and fastening or loosening the operating table is connected to the U-shaped clamping block 11022 in a threaded fit manner. The four supporting and fixing mechanisms 1102 are fixed on two sides of the operating table in pairs respectively, the frame 1101 can be stably and reliably fixed right above the operating table, and the supporting and fixing mechanisms 1102 are simple in structure and convenient to assemble and disassemble.

In this embodiment, a gasket is disposed between the third adjusting nut 10024 and the mounting frame 11011 and between the fourth adjusting nut 10025 and the mounting frame 11011.

In this embodiment, the lockable universal joint includes a spherical head 10026 and a lock cap 10027, the lock cap 10027 is connected to the intermediate connecting seat 10022, a spherical cavity is provided between the lock cap 10027 and the intermediate connecting seat 10022, the spherical head 10026 is installed in the spherical cavity, the lock cap 10027 is in threaded connection with the intermediate connecting seat 10022 and can be screwed to compress or loosen the spherical head 10026, and the connecting rod 10021 or the adjusting rod 10023 is fixedly connected to the spherical head 10026. The lock cap 10027 has a through hole through which the link 10021 or the adjustment lever 10023 passes.

In this embodiment, the axis of the sleeve 1001 is not coincident with the axis of the link 10021.

The pushing device mainly has the main functions of correcting scoliosis in an operation, enabling each vertebral body to be positioned on the same line on a coronal plane after correction, and penetrating rods under the correction state, if the pushing device is not used for restoring the scoliosis under general anesthesia, the rod penetrating through a minimally invasive incision is extremely difficult. After minimally invasive implantation of each pedicle screw 1 designed before surgery, the fixing frame 1100 is fixed on an operating table, a sleeve 1001 of a first ejector 1000 is sleeved on two arms of each pedicle screw 1 on the convex side of the ejector, the open end of the sleeve 1001 is abutted to the bone surface, an adjusting rod 10023 of a push-pull arm 1002 is embedded into a clamping groove 11012 of an installation frame edge 11011 on the same side, a third adjusting nut 10024 and a fourth adjusting nut 10025 are respectively positioned on two sides of the clamping groove 11012 of the installation frame edge 11011, the two adjusting nuts are screwed to the clamping groove 11012, and the ejector 1000 is temporarily fixed on the installation frame edge 11011 of the fixing frame 1100; in the same operation method, the sleeves 1001 of the second and third ejectors 1000 are fitted over the two arms of the pedicle screws 1 on the upper and lower vertebral concave sides, the adjustment rods 10023 of the push-pull arms 1002 are inserted into the corresponding slots 11012 of the concave mounting frame 11011, and the ejectors 1000 are temporarily fixed to the mounting frame 11011 of the holder 1100. The direction of each sleeve 1001 is adjusted to enable the inverted U-shaped groove 10011 and the U-shaped structure 14 between the two arms of the pedicle screw 1 to be completely communicated, the direction of the push-pull arm 1002 is adjusted to enable the adjusting rod 10023 to be perpendicular to the sagittal plane of the vertebral body, because the vertebral bodies rotate to different degrees, as long as the direction of each adjusting rod 10023 is perpendicular to the deformed plane of the corresponding vertebral body, the universal joint fixing connecting rod 10021 and the adjusting rod 10023 are screwed down to fix the whole ejector 1000, then the nut of each adjusting rod 10023 is rotated to enable the ejector 1000 to push the respective pedicle screw 1 to approach to the central line of the vertebral column, the vertebral bodies and the pedicles on the concave side of the convex side are repeatedly adjusted to be located on the same straight line on the coronal plane, the rotation deformity is corrected at the same time, and further. The pedicle screw 1 is fixed on the pedicle of vertebral arch, the acting force is strongest, the sleeve 1001 of the ejector 1000 sleeves the pedicle screw 1 to facilitate correction, the universal joint is convenient for adjusting the direction of the adjusting rod 10023, the adjusting rod 10023 is vertical to the direction of the sagittal plane of the corresponding vertebral body, the universal joint is screwed up to enable the ejector 1000 to be fixed on a whole body, the adjustment of the ejecting vertebral body for reduction and correction is facilitated, the adjusting rod 10023 is clamped into the clamping groove 11012 of the mounting frame edge 11011, the pedicle screw 1 is rotationally pushed to approach to the central line of the vertebral column through the rotation of the adjusting nut, the reduction and correction force is strong, and the correction of the lateral.

With idiopathic chest lumbar lateral curvature (lumbar thoracic cavity)₁₂Upper end of the thoracic region₉Lower end of lumbar vertebra₃) For example, the operation (minimally invasive) of implanting the scoliosis nail-bar correction bracket is as follows:

1. after the anesthesia is successful, the patient takes the prone position and the abdomen is suspended.

2. C-arm X-ray machine perspective positioning: making chest by multiple kirschner wires or grids to make positive perspective body surface positioning₉Chest and chest₁₂Waist and waist₃Bilateral and thoracic₁₁Waist and waist₁Convex side vertebral pedicle body surface projection, and a longitudinal skin incision with the mark of 1.5cm and the width of 5mm is formed beside each vertebral pedicle body surface projection. As shown in fig. 47, the line A indicates the chest₁₂The pedicle of vertebral arch, B line, is designated as the chest₉The vertebral pedicle and the C line are indicated by the waist₃The pedicle of vertebral arch, D line, is indicated by the chest₁₁The pedicle of vertebral arch, designated by E line, is the waist₁A pedicle of a vertebral arch.

3. Sterilizing, spreading sterile towel, and mounting the fixing frame 1100.

4. Incise skin, dark fascia, once only expand the soft tissue with expansion core 5, the articular process goes up in the tip cone feeler probe of 5 front ends of expansion core, insert guide pin 4 perpendicularly through the 5 through-holes of expansion core, the 4 points of guide pin pierce a little in the cortex of bone, extract expansion core 5, insert the capable internal location of lotus root pole locator along guide pin 4, positive position and (or) the vertebra bow root axis position perspective, select each accurate access point of pedicle of vertebral arch, insert guide pin 4 to accurate access point department of pedicle of vertebral arch, extract the lotus root pole locator, adjust each guide pin 4 directions with puncture sleeve 31, just, the side position, the position of vertebra bow root axis position, perspective confirm that every guide pin 4 positions are accurate.

5. Insert the passageway and contradict the cortex of bone with expansion core 5 along guide pin 4 and insert the bone cortex, put nail guide sleeve 6 and insert along expansion core 5, the handheld horizontal handle 62 of operator handheld compresses tightly, and the messenger puts the annular sawtooth point of 6 front ends of nail guide sleeve and pierces the vertebral plate, the surperficial cortex of articular process, and fixed nail guide sleeve 6 of putting keeps the position unmovable, extracts expansion core 5, remains and puts nail guide sleeve 6 and guide pin 4.

6. Insert along guide pin 4 with hollow plano-convex file 100, grind flat 4 entry cortex lycii radicis of guide pin to drill into a little degree of depth, extract hollow plano-convex file 100, follow guide pin 4 with hollow tap 200 and tap the pedicle of vertebral arch nail way, extract guide pin 4.

7. After the hollow screw-on device 7 is connected with the solid pedicle screw 1, the screw-on device is inserted along the screw-placing guide sleeve 6, the tip end of the screw body 10 is accurately inserted into the pedicle inlet, and the hollow screw-on device 7 is rotated to be screwed into the pedicle screw 1 to the vertebral body. The remaining solid pedicle screws 1 are placed in the same way. (another method is to put the hollow pedicle screw 1, insert the puncture cannula 31 of the puncture cone 3 into the vertebral body along the guide pin 4, pull out the guide pin 4 to reserve the puncture cannula 31, insert the guide wire 9 into the vertebral body along the inner hole of the puncture cannula 31, pull out the puncture cannula 31, reserve the guide wire 9, insert the hollow pedicle screw 1 along the guide wire 9 after connecting with the hollow upper screw device 7, and then screw the hollow pedicle screw 1 into the vertebral body). The nail setting condition of the example is as follows: chest₁₂Bilateral and thoracic part₁₁Convex side and waist₁The convex side is respectively provided with a one-way fixed pedicle screw 1, a chest₉Two sides and waist₃The two sides are respectively provided with a one-way sliding pedicle screw 1. When the rod penetrating is difficult by all the one-way screws, the universal fixed pedicle screw 1 and the universal sliding pedicle screw 1 are respectively the alternatives of the one-way fixed pedicle screw 1 and the one-way sliding pedicle screw 1.

8. The chest is respectively sleeved by three ejector 1000₁₂Convex side and chest₉Concave side and waist₃The concave side pedicle screw 1 is used to retract other pedicle screws 1 minimally invasive incision skin soft tissue with the incision tissue retractor 700, exposing the two breakable long arms 12 and the U-shaped structure 14 of the pedicle screw 1.

9. Chest₁₂The push-pull arm 1002 of the ejector 1000 on the convex side is mounted on the mounting rim 11011 of the fixing frame 1100 on the convex side of the spine, the chest₉Concave side and waist₃The push-pull arms 1002 of the ejectors 1000 on the concave side are mounted on the mounting frame edges 11011 of the fixing frame 1100 on the concave side of the spine, and the force lines of the push-pull arms 1002 of the ejectors 1000 are adjusted to lock the lockable universal joint.The third adjustment nut 10024 and the fourth adjustment nut 10025 of each ejector 1000 are rotationally adjusted to bring the sleeve 1001 of each ejector 1000 closer to the midline of the spine and correct the lateral deformity of the spine to position each vertebral body on the midline. In other cases, multiple ejectors 1000 may be used to correct multiple curvatures of the spine. The correction of the U-shaped structures 14 of the pedicle screws 1 is carried out under the direct vision, so that the U-shaped structures 14 of the pedicle screws 1 on the same side are positioned on the same straight line, the length of the longitudinal connecting rod 2 is measured, and the longitudinal connecting rod is lengthened by 2-3 cm from the upper direction and the lower direction of the end vertebra.

10. Selecting a longitudinal connecting rod 2 with proper length, pre-bending the longitudinal connecting rod 2 by using a rod bending device according to physiological curvature, connecting the longitudinal connecting rod 2 with a rod holder 400, enabling the longitudinal connecting rod 2 and the rod holder 400 to be positioned on the same plane, vertically inserting the distal end of the longitudinal connecting rod 2 into the bottom of a U-shaped structure 14 of a pedicle screw 1 through a small incision of an upper (or lower) end vertebra under direct vision, changing the longitudinal connecting rod 2 from a vertical position into a horizontal position and inserting the longitudinal connecting rod into the U-shaped structure 14 of the lower pedicle screw 1 along a vertebral plate surface because the width of the rod holder 400 is equal to the internal width of the U-shaped structure 14, in the process, embedding the rod holder 400 into the U-shaped structure 14 of a breakable long arm 12 of an upper pedicle screw 1, enabling the U-shaped structure 14 of the breakable long arm 12 of each pedicle screw 1 on the same side, the longitudinal connecting rod 2 and the rod holder 400 to be positioned on the same longitudinal plane under direct vision, pushing the longitudinal connecting rod 2 to be inserted into the U-shaped structure 14 of the lower pedicle screw 1, if the longitudinal connecting rod 2 is deviated from the U-shaped structure 14 of the pedicle screw 1 and can not be aligned, the rod holding adjuster 1200 is used for holding the longitudinal connecting rod 2 to align the U-shaped structure 14 through minimally invasive incision. After the longitudinal connecting rod 2 penetrates into the U-shaped structure 14 of each pedicle screw 1, the same longitudinal connecting rod 2 is held by two minimally invasive incisions on the same side through two holding rod adjusters 1200 respectively, the longitudinal connecting rod 2 is adjusted to respectively grow 2-3 cm from the upper direction and the lower direction of the end vertebra, and the correct radian orientation of the pre-bent longitudinal connecting rod 2 is adjusted.

11. The screw plug 13 is screwed into the chest by tightly holding the screw plug device 300₁₂In the U-shaped structure 14 of the pedicle screw 1 on the convex side of the apical vertebra, the screw plug 13 is screwed through the concave cutting track 18 to be close to the longitudinal connecting rod 2, the ejector restorer is disassembled, the broken arms 121 of the two breakable long arms 12 are broken by the nail tail pliers 800 and taken out, the cap 19 is arranged on the hollow screwdriver of the combined screwdriver 900, and the combined screwdriver is usedThe solid screwdriver 900 is inserted into the holding plug hole 17 of the screw plug 13, the hollow screwdriver slides down along the second wrench rod 901 of the solid screwdriver, the caps 19 cover the two short arms 122 of the pedicle screw 1, the hollow screwdriver is screwed into the caps 19 by rotating, the combined screwdriver 900 is taken out, then the torque-resistant socket wrench 500, the screwdriver 8 and the holding cap screwdriver are adopted to further tighten the screw plug 13 and the caps 19, and the caps 19 are tightened to hold the two short arms 122 of the pedicle screw 1 tightly, so as to compress the screw plug 13.

Screwed into the breast in the same way₁₁Waist and waist₁The plug 13 and the cap 19 of the convex side pedicle screw 1 are used for opening the pressurizer 600 to the chest₁₂The convex side is pressed and fixed. Screwed into the breast in the same way₁₂Lateral and thoracic vertebra of dorsal vertebra₉Bilateral and lumbar vertebrae of superior vertebra₃A screw plug 13 and a cap 19 of the pedicle screw 1 on both sides of the lower vertebra. Chest₁₂Bilateral and thoracic part₁₁Convex side and waist₁The convex side is respectively provided with a one-way fixed pedicle screw 1, and the screw plug 13 and the cap 19 are screwed down to compress the longitudinal connecting rod 2; chest₉Waist and waist₃The unilateral sliding pedicle screw 1 is respectively arranged at two sides, the screw plug 13 does not compress the longitudinal connecting rod 2, and the unilateral sliding pedicle screw 1 can slide along the longitudinal connecting rod 2. Breast distraction with distraction pressurizer 600₉Waist₃The concave side, the soft tissue of the concave side is released, and the schematic diagram of the nail rod correcting bracket after correcting the scoliosis is shown in fig. 48 and fig. 49.

12. After the positive side perspective of the C-arm X-ray machine, the small incision is washed, and the deep fascia, the subcutaneous tissue and the skin are sutured in full-layer discontinuity, so that the operation is completed.

The utility model discloses a spinal column lateral curvature nail stick corrects mounting system designs four kinds of pedicle of vertebral arch screws 1 and two 2 wicresoures of indulging and link and accomplish the orthopedic at once of spinal column lateral curvature, and to the fixed endplate growth that restraines of the protruding side pressurization of apical vertebra, concave side production tensile stress, protruding side production compressive stress, the pedicle of vertebral arch screw 1 of other centrums can be followed and indulge 2 slides of stick, adjusts the asymmetric growth of spinal column lateral curvature centrum. The pedicle screw 1 is provided with the breakable long arm 12, so that minimally invasive completion of screw rod placing and orthopedic operation is facilitated, after the broken arm 121 is removed, the cap 19 is screwed on the short arm 122 to tightly hold the two short arms 122 and the compression screw plug 13, the screw thread directions of the cap 19 and the screw plug 13 are opposite, screw loosening can be prevented, and effective internal fixation orthopedic time of the scoliosis screw rod correction support is prolonged. The ejector 1000 and the fixing frame 1100 are adopted to reset three action points, so that scoliosis is reset, bar penetration is facilitated, scoliosis nail bar correction can be completed in a minimally invasive manner, injury is reduced, spontaneous fusion is reduced, and the incidence rate of incision infection is reduced.

The utility model discloses a scoliosis is followed excellent and is corrected mounting system can accomplish putting into of scoliosis nail excellent correction support, has solved the problem that present scoliosis correction technique exists, has rational in infrastructure, and easy operation puts into efficiently. Wherein,

1. the front end of the puncture conical needle 32 is set to be conical, so that the puncture conical needle has self-coning capacity, the puncture sleeve 31 is a hollow tube, the front end of the puncture sleeve forms a tooth tip which plays a role of sawtooth and also plays a role of fixing, when the puncture conical needle 32 enters cortical bone during operation, the puncture conical needle 32 is withdrawn, and the tooth tip of the puncture sleeve 31 pierces the cortical bone to ensure that the cortical bone is not easy to displace, so that the insertion of the guide needle 4 is ensured. When the puncture awl 3 punctures, puncture awl needle 32 and puncture sleeve pipe 31 all have the effect of awl in the sclerotin in the puncture awl 3, and the puncture trocar among the prior art, because its puncture sleeve front end is circular, not the toper, its self does not have the broken cortex ability of awl, only the pjncture needle has the effect of awl in the sclerotin, only rely on the pjncture needle taper hole, but pjncture needle diameter ratio is little than the puncture sleeve pipe, puncture sleeve pipe button head gets into hard difficulty behind the pjncture needle taper hole, especially harder cortical bone, so its effect is only used for the puncture to insert the guide pin. In actual operation, when the puncture needle exits after puncturing cortex, the puncture cannula is easy to displace, and the position of the puncture needle is easy to change when the puncture needle is inserted; the utility model discloses a puncture awl 3 still has two effects: firstly, the direction of the guide pin 4 is adjusted, when the correct entering point and the incorrect direction of the guide pin 4 are found by X-ray fluoroscopy after the guide pin 4 is inserted in operation, the puncture cannula 31 of the puncture awl 3 is inserted through the guide pin 4, the sawtooth awl enters the bone cortex a little and pierces into the bone, the guide pin 4 withdraws from the bone surface, but does not withdraw from the puncture cannula 31 completely, the direction of the puncture cannula 31 is adjusted, and then the guide pin 4 is inserted back, thus completing the adjustment of the direction of the guide pin 4. The guide wire 9 is converted into a slender guide wire 9 because the guide wire 4 is thick and the hollow pedicle through hole is thin after the position of the guide wire 4 is accurate. Then the puncture cannula 31 is inserted along the guide pin 4, the sawtooth awl thereof enters the sclerotin and is fixed, the guide pin 4 is drawn out, the guide wire 9 is inserted into the pore channel of the original guide pin 4 in the sclerotin along the puncture cannula 31, and the hollow pedicle screw and the hollow upper screw device 7 are screwed in along the guide wire 9, thereby ensuring that the position of the guide pin 4 is not changed by changing the guide wire 9.

2. The structure and the using method of the expansion core 5 and the nail placing guide sleeve 6 are different from those of the expansion core 5 and the nail placing guide sleeve 6 used in the prior art. Firstly, the structure is different: expansion core among the prior art is provided with the handle, and the utility model discloses an expansion core 5 need not to set up handle and length ratio and puts nail guide sleeve 6 long, and the part of growing out becomes to handheld portion, and what among the prior art put nail guide sleeve be provided with put two U-shaped grooves that the horizontal handle of nail guide sleeve is parallel, and present nail guide sleeve 6 need not to set up two U-shaped grooves, and the handle is flat mutually with the sleeve entry.

Secondly, the using method is different: the use method in the prior art is that the expansion core is inserted into and expanded from a soft tissue channel along the guide pin and then withdrawn, the nail placing guide sleeve is inserted and sleeved along the expansion core to enable the horizontal handle of the expansion core to be embedded into the U-shaped groove of the nail placing guide sleeve to be combined into a whole, the nail placing guide sleeve is inserted along the guide pin through the through hole of the expansion core, the expansion core is pressed downwards to enable the nail placing guide sleeve to continuously insert downwards after abutting against the bone surface, the tooth tips of the nail placing guide sleeve prick the bone surface, and then the horizontal handle is pulled upwards to pull out the expansion core. The utility model discloses a use method is: the expansion core 5 is inserted into and expands soft tissue along the guide pin 4, and after the soft tissue collides with the bone surface, the nail-placing guide sleeve 6 is directly inserted along the expansion core 5, the tooth tips of the nail-placing guide sleeve pierce the bone surface, and the hand-held part of the expansion core 5 is held to pull out the expansion core 5. Obviously, compared with the using method in the prior art, the method has the advantages of simple and convenient operation and rapidness. Compared with other sleeve type devices in the prior art, the teeth arranged at the front end of the sleeve can not only have the function of separating and protecting soft tissues in the process of placing the hollow nail, but also ensure that the far end of the nail guide sleeve 6 is not shifted, ensure that the entry point of the guide pin 4 is positioned at the central position, and ensure that the nail tip enters the entry point of the guide pin 4 when the solid nail is inserted into the nail guide sleeve 6.

3. The tacker 7 differs from prior art tackers in both structure and function. The supporting rod of the nail feeding device in the prior art is solid, only a solid pedicle nail can be placed, and the rotating cap is not provided with a locking nut, so that the pedicle nail is easy to withdraw and loosen when being screwed. The utility model provides a vaulting pole 71 of going up nail ware 7 is hollow, both can put hollow nail and also can put solid nail, has lock nut on the rotatory cap 75, and lock nut locking has 75 locked locking arm pipe 74 simultaneously, does not withdraw from when twisting pedicle of vertebral arch nail, and is not hard up, operation safety and stability.

According to the data analysis of completed 518 cases of minimally invasive thoracolumbar vertebral fracture surgery, 3115 nails are placed in the minimally invasive thoracolumbar vertebral fracture surgery, the accuracy rate reaches 98.3%, and compared with the existing open surgery, the minimally invasive thoracolumbar vertebral fracture surgery has the advantages of short surgery time, less bleeding, short hospitalization time and the like, and specific comparison data are as follows:

the operation time is as follows: the open surgery is 60-180 minutes, and the average time is 91 minutes; the minimally invasive surgery adopting the utility model is 30-70 minutes, and the average time is 52 minutes.

Bleeding volume: the open surgery is 100-600 ml, and the average volume is 260 ml; the minimally invasive surgery adopting the utility model is 15-30 ml, and the average is 25 ml.

Hospitalization time: the open surgery is 15-21 days, and the average is 14 days; the minimally invasive surgery adopting the utility model is 6-14 days, and averagely 9 days.

The above description is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. For those skilled in the art, the modifications and changes obtained without departing from the technical idea of the present invention shall be considered as the protection scope of the present invention.

Claims

1. The utility model provides a spinal column curved nail stick corrects mounting system, includes the pedicle of vertebral arch screw, indulges even stick, puncture awl, guide pin, seal wire, expansion core, puts nail uide sleeve, hollow flush knob file, hollow tap, goes up the nail ware, holds the stick ware, holds tight plug screw ware, screwdriver, struts presser, incision tissue retractor and anti torque socket spanner, its characterized in that: the pedicle screw comprises a screw body, a screw seat, two breakable long arms, a screw plug and a cap, wherein the screw body is connected with the screw seat, the screw body is solid or hollow, the two breakable long arms are oppositely and fixedly connected on the screw seat to form a U-shaped structure for embedding a longitudinal connecting rod, the two breakable long arms are respectively provided with a concave notch which divides the breakable long arms into a breakable arm and a short arm, the short arms are connected between the breakable arm and the screw seat, the inner surfaces of the two breakable long arms are provided with inner threads extending from the breakable arms to the short arms, the screw plug comprises a screw thread part and an arc-shaped cushion block, the outer surface of the screw thread part is provided with outer threads matched with the inner threads of the breakable long arms, one end of the screw thread part is provided with a holding plug hole, the other end of the screw thread part is movably connected with the arc-shaped cushion block, the arc-shaped cushion block is provided with an arc-shaped groove matched with the arc-shaped, the cap is used for being sleeved at one end, close to the concave notch, of the short arm of each of the two breakable long arms and is provided with an internal thread matched with the external thread of the short arm, and the cap is provided with a cap holding hole.

2. The scoliosis nail-bar correction stent system according to claim 1, wherein: the nut cap is in a barrel shape, and a smooth section for guiding the sleeve on the short arm is arranged at the opening of the barrel-shaped nut cap.

3. The scoliosis nail-bar correction stent system according to claim 1, wherein: the screwing direction of the cap is opposite to that of the screw plug.

4. The scoliosis nail-bar correction stent system according to claim 1, wherein: the arc-shaped cushion block is rotatably mounted on the threaded portion through a rivet.

5. The scoliosis screw rod corrective bracket system according to any one of claims 1 to 4, characterized in that: the arc cushion block comprises a cushion block body and two convex feet connected to the cushion block body at intervals, and the arc-shaped groove is arranged between the two convex feet.

6. The scoliosis nail-bar correction stent system according to claim 5, wherein: the pedicle screw is a fixed shaft pedicle screw or a movable shaft pedicle screw, a screw body of the fixed shaft pedicle screw is fixedly connected with a screw seat, the screw body is solid or hollow, and the hollow screw body is provided with a guide wire through hole along the axial direction; the nail body of the pedicle screw of the movable shaft is fixedly connected with a ball head, the ball head is movably connected with a nail seat, a ball head pressure pad pressed on the ball head is arranged in the nail seat, a longitudinal connecting rod is embedded into a U-shaped structure of the two breakable long arms, the nail body is solid or hollow, and the hollow nail body is provided with a guide wire through hole along the axial direction.

7. The scoliosis nail-bar correction stent system according to claim 6, wherein: two supporting platforms corresponding to the two convex feet are arranged on the inner sides of the two short arms of the pedicle screw or the ball head pressure pad respectively, the length of the two convex feet is configured to be abutted against the two supporting platforms so that the arc-shaped cushion block does not press the longitudinal connecting rod, or a space is reserved between the two supporting platforms so that the arc-shaped cushion block presses the longitudinal connecting rod.

8. The scoliosis nail-bar correction stent system according to claim 5, wherein: the cushion block body is provided with at least one rotation stopping convex shoulder which is matched with the U-shaped structure of the pedicle screw to stop the arc cushion block from rotating.

9. The scoliosis nail-bar correction stent system according to claim 1, wherein: still including holding excellent adjuster, hold excellent adjuster and include the outer tube and compress tightly the pole, be equipped with on the lateral wall that is close to outer tube one end and be used for the card to go into the side direction draw-in groove of indulging the stick, the outer tube is equipped with compresses tightly the pole through-hole, compresses tightly the pole through-hole and extends to the side direction draw-in groove from the outer tube other end, compresses tightly the pole and wears to locate the installation and compress tightly the pole through-hole, compresses tightly the pole and is connected and the accessible with.

10. The scoliosis nail-bar correction brace system according to claim 9, wherein: the end of the outer pipe, which is far away from the lateral clamping groove, is provided with an expansion part and a threaded hole in the expansion part, and the compressing rod is provided with an expansion section and an external thread matched with the threaded hole of the expansion part of the outer pipe.

11. The scoliosis nail-bar correction brace system according to claim 10, wherein: and one end of the pressing rod is provided with an eighth handheld transverse handle.

12. The scoliosis nail-bar correction brace system of claim 11, wherein: the expansion section of the pressing rod is positioned at a position close to the eighth handheld transverse handle.

13. The scoliosis nail-bar correction stent system according to claim 1, wherein: still including the combination screwdriver, the combination screwdriver includes solid screwdriver and hollow screwdriver, solid screwdriver includes that second spanner pole and fixed connection revolve the screw-plug in the first part of revolving of second spanner pole one end, and the other end of second spanner pole has the rotary plug head that rotates the screw-plug in holding the consent that can insert the screw-plug, hollow screwdriver includes that hollow spanner pole and fixed connection revolve the screw-plug in the second of hollow spanner pole one end and revolve the part, and the other end of hollow spanner pole has the rotary cap head that rotates the block-cap in the holding the cap hole that can insert the block-cap, and hollow spanner pole is equipped with from one end through-hole to the other end, and the second spanner pole is worn to establish in the through-hole of hollow spanner pole, and the rotary plug head of second spanner pole can retract or stretch out the one end that hollow spanner pole was equipped with the rotary cap head, the combination screwdriver still is equipped with the fixed subassembly that is used for fixing second spanner pole and hollow spanner pole.

14. The scoliosis nail-bar correction brace system of claim 13, wherein: the fixed subassembly includes the rotation stopping screw, and rotation stopping screw thread fit installs on the second revolves the part and can support tightly or loosen the second spanner pole through revolving to twist.

15. The scoliosis nail-bar correction brace system of claim 14, wherein: the second screwing part is provided with a threaded through hole communicated with the through hole of the hollow wrench rod, and the rotation stopping screw is installed in the threaded through hole.

16. The scoliosis screw rod corrective bracket system according to claim 13 or 14 or 15, characterized in that: the first screwing component is a first screwing disc with the diameter larger than that of the second wrench rod, and the second screwing component is a second screwing disc with the diameter larger than that of the hollow wrench rod.

17. The scoliosis nail-bar correction brace system of claim 16, wherein: the outer circumferential walls of the first screwing disc and the second screwing disc are provided with anti-skid grooves.

18. The scoliosis nail-bar correction stent system according to claim 1, wherein: the pedicle screw pushing device is characterized by further comprising a pushing device and a fixing frame, wherein the pushing device comprises a push-pull arm and a sleeve connected to the push-pull arm, the sleeve is provided with a sleeve through hole used for being sleeved outside a pedicle screw, the push-pull arm comprises an intermediate connecting seat, a connecting rod and an adjusting rod, the connecting rod and the adjusting rod are respectively connected with the intermediate connecting seat through a lockable universal joint, the sleeve is connected to the connecting rod, and the adjusting rod is connected to the fixing frame through a force adjusting assembly capable of adjusting push-pull force.

19. The scoliosis nail-bar correction brace system of claim 18, wherein: an opening at one end of the sleeve-joint through hole is provided with an inverted U-shaped groove used for being clamped and sleeved on the longitudinal connecting rod, and the width of the inverted U-shaped groove is larger than or equal to the diameter of the longitudinal connecting rod.

20. The scoliosis nail-bar correction brace system of claim 18, wherein: the fixed frame comprises a frame and a mounting assembly for mounting and fixing the frame, the frame is provided with two to four mounting frame edges for fixing the ejector, each mounting frame edge is provided with a plurality of clamping grooves for clamping the adjusting rod, and the clamping grooves are arranged at intervals along the mounting frame edges; the adjusting assembly comprises a third adjusting nut and a fourth adjusting nut, the adjusting rod is a screw rod, the adjusting rod is clamped in the clamping groove, the third adjusting nut and the fourth adjusting nut are arranged on the adjusting rod in a threaded fit mode, and the third adjusting nut and the fourth adjusting nut are arranged on two sides of the mounting frame respectively.

21. The scoliosis nail-bar correction brace system of claim 20, wherein: the installation component comprises at least two supporting and fixing mechanisms, each supporting and fixing mechanism comprises a supporting rod and a U-shaped clamping block, the U-shaped clamping block is used for clamping and sleeving the operating table, one end of the supporting rod is connected with the frame, the other end of the supporting rod is connected with the U-shaped clamping block, and a locking screw which supports tightly or loosens the operating table through screwing is connected to the U-shaped clamping block in a threaded fit mode.

22. The scoliosis nail-bar correction brace system of claim 20, wherein: and gaskets are arranged between the third adjusting nut and the mounting frame edge and between the fourth adjusting nut and the mounting frame edge.

23. The scoliosis screw rod corrective bracket system according to any one of claims 18 to 22, characterized in that: the lockable universal joint comprises a spherical head and a lock cap, the lock cap is connected to the intermediate connecting seat, a spherical cavity is arranged between the lock cap and the intermediate connecting seat, the spherical head is arranged in the spherical cavity, the lock cap is in threaded connection with the intermediate connecting seat and can be tightly pressed or loosened through screwing, and a connecting rod or an adjusting rod is fixedly connected with the spherical head.

24. The scoliosis screw rod corrective bracket system according to any one of claims 18 to 22, characterized in that: the axis of the sleeve is not coincident with the axis of the connecting rod.

25. The scoliosis nail-bar correction stent system according to claim 1, wherein: the spreading pressurizer comprises a first spreading pressurizing arm, a second spreading pressurizing arm, a first connector, a second connector and a supporting rod, the first connector and the second connector are connected to the supporting rod through a displacement adjusting mechanism and can adjust the distance along the supporting rod, the first spreading pressurizing arm is hinged to the first connector in a detachable mode, the second spreading pressurizing arm is hinged to the second connector in a detachable mode, the hinge axes of the first spreading pressurizing arm and the second spreading pressurizing arm are perpendicular to the same plane parallel to the supporting rod, one end of each of the first spreading pressurizing arm and the second spreading pressurizing arm is provided with a clamping groove used for clamping the longitudinal connecting rod, and a spreading force applying mechanism used for tensioning or spreading the first spreading pressurizing arm and the second spreading pressurizing arm is connected between the other end of the first spreading pressurizing arm and the other end of the second spreading pressurizing arm; the displacement adjusting mechanism comprises a threaded hole formed in the second connector, the support rod is rotatably arranged on the first connector, and the support rod penetrates through the threaded hole of the second connector and is provided with threads matched with the threaded hole; the support rod is also provided with a rotary knob; the progressive force application mechanism comprises a first adjusting nut, a second adjusting nut and an adjusting screw rod hinged to a second spreading pressurizing arm, the first spreading pressurizing arm is provided with a positioning groove, the adjusting screw rod is clamped into the positioning groove, and the first adjusting nut and the second adjusting nut are installed on the adjusting screw rod in a matched mode and are respectively arranged on two sides of the positioning groove; the first adjusting nut is positioned on one side, away from the second spreading pressurization arm, of the positioning groove, the first adjusting nut is provided with a screwing part convenient for screwing, and a gasket positioned between the first adjusting nut and the first spreading pressurization arm is sleeved on the adjusting screw rod; the first spreading pressurization arm is provided with a first hinge through hole, the first connector is fixedly connected with a first connecting screw rod, one end of the first connecting screw rod is fixedly connected with the first connector, the other end of the first connecting screw rod penetrates through the first hinge through hole to be connected with a first locking nut, and the first connecting screw rod is provided with a first smooth section matched with the first hinge through hole; a second hinge through hole is formed in the second spreading pressurization arm, a second connector is fixedly connected with a second connecting screw rod, one end of the second connecting screw rod is fixedly connected with the second spreading pressurization arm, the other end of the second connecting screw rod penetrates through the second hinge through hole to be connected with a second locking nut, and a second smooth section matched with the second hinge through hole is formed in the second connecting screw rod; the section of the first spreading pressurization arm from the first hinge through hole to the clamping groove is a first inclined section, the section of the second spreading pressurization arm from the second hinge through hole to the clamping groove is a second inclined section, and the first inclined section and the second inclined section are switched between two installation modes of gradually approaching to each other or gradually departing from each other by changing the direction of the first connecting screw rod passing through the first hinge through hole and the direction of the second connecting screw rod passing through the second hinge through hole;