CN114145828A - Locking structure for bone hook system and assembling method thereof - Google Patents
Locking structure for bone hook system and assembling method thereof Download PDFInfo
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- CN114145828A CN114145828A CN202111494712.XA CN202111494712A CN114145828A CN 114145828 A CN114145828 A CN 114145828A CN 202111494712 A CN202111494712 A CN 202111494712A CN 114145828 A CN114145828 A CN 114145828A
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- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7056—Hooks with specially-designed bone-contacting part
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Abstract
The invention relates to a locking structure for a bone hook system and an assembly method thereof, wherein the locking structure comprises a hook seat, a connecting rod and a positioning compression ring; the positioning compression ring is arranged in the hook seat, and the connecting rod penetrates through the hook seat; the hook seat is internally provided with a locking assembly, and the locking assembly is movably connected with the hook seat; the locking assembly comprises a compression screw plug and a compression spiral ring, and the compression spiral ring is arranged on the outer side of the compression screw plug; during the use, place the location clamping ring inside the hook seat earlier, the rotatory location clamping ring that pins of the ring is compressed tightly to this kind of double-lock mode utilization of rethread, and the rotatory fixed connection stick that reuses the plug screw guarantees the stable connection, reduces the operation time, reduces and causes patient's complication risk.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to a locking structure for a bone hook system and an assembling method thereof.
Background
Spinal deformity refers to the occurrence of morphological abnormality in which the coronal, sagittal, or axial positions of the spine deviate from normal positions. The spine deformity can be singly or simultaneously expressed in the forms of lateral bending, rotation, anterior or posterior convex deformity, stiffness and the like, can be attacked in all ages, is particularly well developed for infants and teenagers, not only influences the appearance, but also extremely threatens the functions of the heart, the lung, the nervous system and the like, and seriously harms the physical and mental health.
At present, aiming at the problem of spinal deformity, some patients with light symptoms generally adopt conservative treatment, patients with serious symptoms generally adopt operative treatment, a spinal corrector is generally arranged beside the spinal column to correct the deformity, and a rib hook system consisting of a rib hook and accessories thereof is an important medical instrument in the spinal surgical operation, can be used for fixing a correcting rod on the rib and plays a role in fixing the spinal corrector. Aiming at the patients who receive the internal fixation operation of the spine, the vertebral bodies of some patients have serious deformity and can not be screwed into pedicle screws, so that the internal fixation frame structure can not be established. However, the bone hook system used at present has the following defects: in the hook stick system that spinal internal fixation operation used, the design of bone hook top is the screw-in top cap for most, and the screw-in top cap need be screwed one by one to each top cap in the use to fasten the inspection, need use a plurality of bone hooks among the spinal internal fixation operation, screw the inspection to every bone hook, greatly increased operation time, also can increase the risk that causes patient's complication.
Based on the shortcomings of the prior art, the invention provides a locking structure for a bone hook system and an assembling method thereof.
Disclosure of Invention
To overcome the problems set forth in the background, the present invention provides a deadlocking structure for a bone hook system and a method of assembling the same.
A locking structure for a bone hook system comprises a hook seat, a connecting rod and a positioning compression ring; the positioning compression ring is arranged in the hook seat, and the connecting rod penetrates through the hook seat; the hook seat is internally provided with a locking assembly, and the locking assembly is movably connected with the hook seat; the locking assembly comprises a compression screw plug and a compression spiral ring, and the compression spiral ring is arranged on the outer side of the compression screw plug; during the use, place the location clamping ring inside the hook seat earlier, the rotatory location clamping ring that pins of the ring is compressed tightly to this kind of double-lock mode utilization of rethread, and the rotatory fixed connection stick that reuses the plug screw guarantees the stable connection, reduces the operation time, reduces and causes patient's complication risk.
Furthermore, the lower end of the compression screw ring is not in contact with the lower end of the compression screw plug, and a buffer space is reserved between the lower end of the compression screw ring and the lower end of the compression screw plug, so that friction is reduced better, and the assembly effect is ensured; the double-locking arrangement of the compression screw plug and the compression screw ring can well realize distribution locking and has better firmness and stability.
Further, the lower end of the compression screw plug is provided with a boss which is arc-shaped and protrudes downwards; the rotation axis of the boss is superposed with the central axis of the compression screw plug; the arrangement ensures the fixing effect of the compression screw plug and the connecting rod, ensures one-step locking and has better locking effect.
Furthermore, the upper end of the compression screw plug is provided with a rotary column which is convenient to operate, and the rotary column is matched with other tools to use when in use, so that the effect of screwing well can be realized.
Furthermore, at least 1 notch is arranged at the upper end of the compression spiral ring, and the central line of the notch on the same horizontal plane is not parallel to the line on which the edge of the notch is located; preferably, the number of the notches is 4, and the notches are arranged in a circle around the circle center of the compression spiral ring; the notch is better matched with a surgical tool for use, and the locking is assisted; while the circumferential arrangement of the notches facilitates centering.
Furthermore, the lower end of the hook seat is provided with a hook body, the hook body extends into the lower end of the hook seat, the hook body is movably connected with the hook seat, and the upper end of the hook body rotates relative to the lower end of the hook seat; so as to ensure that the relative positions of the structure seat and the hook body can be adjusted, and meet the clinical use requirement; when the central axis of the hook body and the central axis of the hook seat are mutually coincident, the surface of the top surface of the hook body is parallel to the surface of the bottom surface of the positioning compression ring; when the central axis of the hook body and the central axis of the hook seat are not mutually coincident, the surface of the top surface of the hook body is crossed with the surface of the bottom surface of the positioning compression ring; the hook body rotates relative to the hook seat, and is stressed uniformly when rotating, good in stability and more convenient and safer to operate in the operation. The hook body is a rib hook or a taper plate hook, and a fixing platform is arranged on the inner side of the rib hook; the fixing table is made of rigid materials, hooks the rib when in use, and pricks into the rib to play a role in fixing. The shape of the fixing table is not specifically arranged, and the fixing table can be a regular pyramid, a cone or other structures which can hook the ribs and play a stabilizing role.
Further, the hook body comprises a ball body end and a C-shaped ring end which are integrally connected, and the ball body end and the C-shaped ring end are in streamline connection; the ball end is connected with the lower end of the hook seat, and the C-shaped ring end is used for fixing the appointed bone to be fixed and muscle tissue around the bone to be fixed. The plane area of the upper surface of the ball end is smaller than the maximum plane section area of the ball end. The end of the C-shaped ring is of a smooth arc structure so as to conveniently extend into the bone.
Further, the top end of the ball body end is provided with a hollow groove, and the hollow groove is in an inverted gyro shape; the inverted gyroscope-shaped arrangement enables the device to be assembled with other surgical tool interfaces in clinic.
Furthermore, a first through groove in the vertical direction is formed in the top end of the hook seat, a first through hole in the left-right direction is formed in the hook seat, and the first through groove is communicated with the first through hole; and a positioning compression ring and a locking assembly are placed in the first through groove, and the first through hole extends into the connecting rod so as to meet the basic clinical requirement.
Furthermore, the through groove is divided into a threaded section at the upper end, a positioning section at the middle end and a connecting section at the lower end; the threaded section is provided with a locking assembly, the positioning section is provided with a positioning compression ring, and the connecting section accommodates the ball end; through this kind of mode with location clamping ring and hook seat assembly, ball end and hook seat lower extreme assembly, reuse locking subassembly locking, guarantee this bone hook's normal use.
Furthermore, the inner side wall of the compression screw ring is matched with the outer side wall of the compression screw plug for use, and the outer side wall of the compression screw ring is matched with the thread section for use; the compression screw ring is matched with the threaded section to lock and fix the positioning compression ring; the compressing screw plug is used for fixing the connecting rod; the positioning compression ring is locked by the rotation of the compression spiral ring in the double-locking mode so as to fix the direction of the hook body, the connecting rod is fixed by the rotation of the compression plug screw, and the positioning compression ring, the compression plug screw and the compression spiral ring are stably fixed.
Furthermore, the positioning compression ring comprises a limiting section and a ball containing section which are integrally connected, and the diameter of the limiting section is larger than that of the ball containing section; a second through groove in the vertical direction is formed in the top end of the positioning compression ring, a second through hole in the left-right direction is formed in the positioning compression ring, and the second through groove is communicated with the second through hole; the lower end of the positioning compression ring is provided with a first ball socket for the hook body to extend into and rotate; the first ball socket is positioned at the lower end of the second through groove; the arrangement can well ensure that the positioning compression ring is well placed in the hook seat and the stability of the hook body relative to the hook seat and the positioning compression ring during rotation.
Further, the positioning compression ring is in interference connection with the hook seat through the connecting structure, so that the positioning compression ring is prevented from rotating and being separated from the hook seat relatively, and the stability is ensured.
Furthermore, the connecting structure comprises fixed shafts arranged on two sides of the positioning compression ring in a mirror image mode, and fixed holes which are arranged at the corresponding positions of the hook seats and used for the fixed shafts to extend into and vertically move; the diameter of the fixing hole is smaller than that of the fixing shaft; the fixed shaft and the fixed hole are connected in a rotary interference manner, so that the anti-rotation anti-disengagement structure is anti-rotation and anti-disengagement, and the firmness of connection is ensured. The fixed shaft and the positioning compression ring can be connected integrally or movably.
Further, the connection section includes: the second ball socket, the third ball socket and the fourth ball socket are communicated with each other from top to bottom; the diameter of the upper surface of the second ball socket is larger than that of the lower surface of the second ball socket, the diameter of the upper surface of the third ball socket is larger than that of the lower surface of the third ball socket, and the diameter of the upper surface of the fourth ball socket is smaller than that of the lower surface of the fourth ball socket; the end of the ball body is assembled into the hook seat from the fourth ball socket below in such a way, the end of the ball body is positioned in the connecting section, and when the central axis of the hook body and the central axis of the hook seat are mutually coincident, the upper surface of the end of the ball body is parallel to the upper surface of the second ball socket; the arrangement of the second ball socket, the third ball socket and the fourth ball socket can reserve a space for the ball body end to rotate and swing in the connecting section.
Further, an opening spherical ring is arranged on the outer side of the ball end and the inner side of the third ball socket, and the opening spherical ring is matched with the outer side wall of the ball end; the openings of the open spherical rings are provided on either side. The size of the opening is set according to the size of the ball end of the hook body, the size of the opening ensures that the opening spherical ring has proper deformation, the opening spherical ring is pinched to smoothly enter the lower end of the hook seat during use, and the ball end can not fall out of the opening spherical ring.
Furthermore, the lower end of the spherical opening ring is provided with a circular arc opening with the diameter gradually increasing from top to bottom, so that the hook body can rotate and swing on the inner side of the spherical opening ring conveniently.
Furthermore, the first through hole and the second through hole are both arranged to be U-shaped grooves, the third through hole is arranged to be an inverted U-shaped groove, and the connecting rod stretches into and stretches out of the first through hole and the second through hole.
Further, a pressing block is arranged at the lower end of the compression spiral ring, a third through groove is formed in the vertical direction of the pressing block, and third through holes are formed in the two sides of the pressing block; the upper end of the pressing block is provided with a rotating ring matched with the buffer space, and the upper end of the pressing block is provided with a groove for accommodating the boss; the compression spiral ring, the thread section and the pressing block are matched to lock the positioning pressing ring; the novel double-locking jackscrew mode is realized by arranging the pressing block, the pressing plug and the pressing spiral ring, when the double-locking jackscrew is used, the positioning pressing ring is directly placed in the hook seat and fixed by the fixing shaft, the pressing block is placed above the positioning pressing ring, the pressing spiral ring is used for pressing the pressing block and the positioning pressing ring, the pressing spiral ring is matched with the thread section to rotate, and the hook body is locked; the positioning press ring, the pressing plug and the pressing spiral ring are stably fixed by using the rotary fixed connecting rod of the pressing plug. And the setting of briquetting and rotatory ring can make and compress tightly the plug screw and compress tightly can not separate when taking place relative rotation between the spiral ring, and smooth and easy rotation guarantees that briquetting, plug screw and the three components of the spiral ring that compress tightly become an organic whole, has guaranteed the stable connection with the hook seat screw thread section. When the pressing block is arranged, the height of the limiting section of the positioning pressing ring is L1, and when the pressing block is not arranged, the height of the limiting section of the positioning pressing ring is L2, and L1 is smaller than L2.
An assembly method for a deadlocking structure of a bone hook system, comprising: the positioning compression ring is placed into the hook seat from the upper end, and the fixed shaft is positioned in the fixed hole; the compression ring is rotated, the compression ring and the upper end of the inner side wall of the hook seat are assembled for use, and the compression ring is fixed and positioned; the connecting rod stretches into the through hole and stretches out of the hook seat, and the connecting rod is fixed by rotating the compression screw plug.
The invention has the beneficial effects that: 1. the connection mode of the compression structure and the hook seat is changed, the effect of one-step locking or distributed locking is realized by adopting a compression screw plug mode, or a compression screw plug and compression screw ring combined mode, or an assembly mode of the compression screw plug, the compression screw ring and a pressing block combined mode, and the stability is ensured; 2. the positioning compression ring is in interference connection with the hook seat, so that the positioning compression ring is tightly matched with the hook seat, and the effects of preventing rotation and falling off are well realized; 3. the lower end of the hook seat is provided with the plurality of ball sockets with the arc-shaped concave surfaces and the ball ends matched with the ball sockets with the arc-shaped concave surfaces for use, so that the hook body part can be reasonably adjusted according to different requirements and actual trends, the interference on the periphery of an operation position in the installation process is reduced, and the foreign body sensation of a patient is weakened; 4. the whole device is implanted into the corresponding position, and is uniform in hand in the later period when in use, high in strength and not easy to break.
Drawings
FIG. 1 is a schematic view of the configuration of a compression plug and compression ring of the present invention as they are dispersed;
FIG. 2 is a schematic front view of the compression plug and compression ring of the present invention in a discrete configuration;
FIG. 3 is a front perspective view of the hook base of the present invention;
FIG. 4 is a schematic view of the overall structure of the hook body, hook base, positioning compression ring and locking assembly of the present invention;
FIG. 5 is a cross-sectional view of the overall structure of the hook body, hook base, retaining collar and locking assembly of the present invention;
FIG. 6 is a schematic view of the overall structure of the hook base, the positioning ring and the locking assembly of the present invention;
FIG. 7 is a schematic view of the overall structure of the hook base, the positioning compression ring, the hook body, the compression plug and the compression ring of the present invention when they are dispersed;
FIG. 8 is a front perspective view of the open spherical ring of the present invention;
FIG. 9 is a front perspective view of the rib hook of the present invention;
FIG. 10 is a front perspective view of the present invention coneplate hook;
FIG. 11 is a right perspective view of the positioning collar of the present invention;
FIG. 12 is a schematic view of a positioning clamping ring with a stationary shaft according to the present invention;
FIG. 13 is a schematic view of the compression plug, compression ring and compact of the present invention as they are dispensed;
FIG. 14 is a schematic cross-sectional view of a compression plug, compression ring and compact of the present invention when assembled together;
in the figure, 1, a hook seat; 11. a first through groove; 12. a first through hole; 13. a fixing hole; 14. a second ball socket; 15. a third ball socket; 16. a fourth ball and socket; 2. a hook body; 21. a ball end; 22. a C-shaped loop end; 23. an empty groove; 24. a fixed table; 25. an open spherical ring; 3. positioning the compression ring; 31. a first ball socket; 32. a fixed shaft; 34. a second through groove; 35. a second through hole; 4. compressing the screw plug; 41. a spin column; 5. compressing the toroid; 51. a buffer space; 6. briquetting; 61. a third through groove; 62. a third through hole; 63. the ring is rotated.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below by specific embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and other advantages and effects of the present invention can be easily understood by those skilled in the art from the disclosure of the present specification. The present invention can be implemented or applied by other different specific embodiments, and the features in the following embodiments and embodiments can be combined with each other without conflict, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
Example 1
Referring to fig. 1-2, the locking structure for a bone hook system in this embodiment includes a hook base 1, a connecting rod and a positioning ring 3; the positioning compression ring 3 is arranged inside the hook seat 1, and the connecting rod penetrates through the hook seat 1; a locking component is arranged in the hook seat 1 and is movably connected with the hook seat 1; the locking assembly comprises a compression screw plug 4 and a compression screw ring 5, and the compression screw ring 5 is arranged on the outer side of the compression screw plug 4; during the use, place location clamping ring 3 inside hook seat 1 earlier, the rotatory location clamping ring 3 that pins that compresses tightly spiro 5 is utilized to this kind of double-lock mode of rethread, and the rotatory fixed connection stick that reuses and compresses tightly plug screw 4 guarantees stable connection, reduces the operation time, reduces and triggers patient's complication risk.
Example 2
Referring to fig. 1-2, the present embodiment specifically sets the locking component on the basis of embodiment 1: the lower end of the compression screw ring 5 is not contacted with the lower end of the compression screw plug 4, and a buffer space 51 is reserved between the lower end of the compression screw ring 5 and the lower end of the compression screw plug 4, so that friction is reduced better, and the assembly effect is ensured; the double-locking arrangement of the compression screw plug 4 and the compression screw ring 5 can well realize distribution locking and has better firmness and stability.
The lower end of the compression screw plug 4 is provided with a boss which is arc-shaped and protrudes downwards; the rotation axis of the boss is coincided with the central axis of the compression screw plug 4; the arrangement ensures the fixing effect of the compression screw plug 4 and the connecting rod, ensures one-step locking and has better locking effect. The upper end of the compression screw plug 4 is provided with a rotary column 41 which is convenient to operate, and the rotary column 41 is matched with other tools for use when in use, so that the effect of screwing well can be realized.
At least 1 notch is arranged at the upper end of the compression spiral ring 5, and the central line of the notch on the same horizontal plane is not parallel to the line on which the edge of the notch is located; preferably, the number of the notches is 4, and the notches are arranged in a circle around the center of the circle where the compression spiral ring 5 is located; the notch is better matched with a surgical tool for use, and the locking is assisted; while the circumferential arrangement of the notches facilitates centering.
Example 3
Referring to fig. 3 to 12, the following technical features are added to embodiment 2 in this embodiment: the lower end of the hook seat 1 is provided with a hook body 2, the hook body 2 extends into the lower end of the hook seat 1, the hook body 2 is movably connected with the hook seat 1, and the upper end of the hook body 2 rotates relative to the lower end of the hook seat 1; so as to ensure that the relative position of the structure seat and the hook body 2 can be adjusted, and the clinical use requirement can be met. When the central axis of the hook body 2 and the central axis of the hook seat 1 are mutually coincident, the surface of the top surface of the hook body 2 is parallel to the surface of the bottom surface of the positioning compression ring 3; when the central axis of the hook body 2 and the central axis of the hook seat 1 are not mutually coincident, the surface of the top surface of the hook body 2 is crossed with the surface of the bottom surface of the positioning compression ring 3; the arrangement realizes the effect that the hook body 2 rotates relative to the hook seat 1, and the rotation has even stress, good stability and more convenient and safer operation. The hook body 2 is provided with a rib hook or a taper plate hook, and the inner side of the rib hook is provided with a fixing platform 24; the fixing table 24 is made of rigid material, and hooks the rib when in use and pricks into the rib to play a role in fixing. The shape of the fixing base 24 is not specifically set, and it may be a regular pyramid, a cone or other structures capable of hooking the rib and playing a stabilizing role.
The hook body 2 comprises a ball body end 21 and a C-shaped ring end 22 which are integrally connected, and the ball body end 21 and the C-shaped ring end 22 are in streamline connection; the ball end 21 is connected with the lower end of the hook base 1, and the C-shaped ring end 22 is used for fixing a designated bone to be fixed and muscle tissues around the bone to be fixed. The upper surface planar area of the ball end 21 is less than the maximum planar cross-sectional area of the ball end 21. The C-shaped loop end 22 is configured in a rounded arcuate configuration to facilitate insertion into bone. The top end of the ball body end 21 is provided with an empty groove 23, and the shape of the empty groove 23 is an inverted gyro shape; the inverted gyroscope-shaped arrangement enables the device to be assembled with other surgical tool interfaces in clinic.
The top end of the hook seat 1 is provided with a through groove I11 in the vertical direction, the hook seat 1 is provided with a through hole I12 in the left-right direction, and the through groove I11 is communicated with the through hole I12; and a positioning compression ring 3 and a locking assembly are placed in the first through groove 11, and the first through hole 12 extends into the connecting rod so as to meet the basic clinical requirement. The through groove I11 is divided into a threaded section at the upper end, a positioning section at the middle end and a connecting section at the lower end; the threaded section is provided with a locking assembly, the positioning section is provided with a positioning compression ring 3, and the connecting section contains the ball body end 21; through this kind of mode will fix a position clamping ring 3 and hook seat 1 assembly, ball end 21 and hook seat 1 lower extreme assembly, reuse locking subassembly locking, guarantee this bone hook's normal use.
The inner side wall of the compression spiral ring 5 is matched with the outer side wall of the compression screw plug 4 for use, and the outer side wall of the compression spiral ring 5 is matched with the hook seat 1 for use; the compression spiral ring 5 is matched with the hook seat 1 to lock and fix the positioning compression ring 3; the compression screw plug 4 is used for fixing the connecting rod; the positioning press ring 3 is locked by the rotation of the compression screw ring 5 in the double-locking mode so as to fix the direction of the hook body 2, and then the positioning press ring 3, the compression screw plug 4 and the compression screw ring 5 are stably fixed by using the rotary fixing connecting rod of the compression screw plug 4.
Example 4
Referring to fig. 3 to 12, in this embodiment, the positioning compression ring 3 is specifically configured on the basis of embodiment 2: the positioning compression ring 3 comprises a limiting section and a ball containing section which are integrally connected, and the diameter of the limiting section is larger than that of the ball containing section; a second through groove 34 in the vertical direction is formed in the top end of the positioning compression ring 3, a second through hole 35 in the left-right direction is formed in the positioning compression ring 3, and the second through groove 34 is communicated with the second through hole 35; the lower end of the positioning compression ring 3 is provided with a first ball socket 31 for the hook body 2 to extend into and rotate; the first ball socket 31 is positioned at the lower end of the second through groove 34; this kind of setting can guarantee well that location clamping ring 3 places inside hook seat 1 well to and the relative hook seat 1 of hook body 2, the stability when location clamping ring 3 rotates.
The positioning compression ring 3 is in interference connection with the hook seat 1 through a connecting structure, so that the positioning compression ring 3 is prevented from rotating and being separated from the hook seat 1 relatively, and the stability is ensured. The connecting structure comprises fixing shafts 32 arranged on two sides of the positioning compression ring 3 in a mirror image mode, and fixing holes 13 which are arranged at corresponding positions of the hook seats 1 and used for the fixing shafts 32 to extend into and vertically move; the diameter of the fixing hole 13 is smaller than that of the fixing shaft 32; the fixed shaft 32 and the fixed hole 13 are connected in a rotary interference manner, so that the rotation is prevented, the separation is prevented, and the connection firmness is ensured. The fixed shaft 32 and the positioning compression ring 3 can be connected integrally or movably. The connecting section includes: a second ball socket 14, a third ball socket 15 and a fourth ball socket 16 which are communicated with each other from top to bottom; the diameter of the upper surface of the second ball socket 14 is larger than that of the lower surface, the diameter of the upper surface of the third ball socket 15 is larger than that of the lower surface, and the diameter of the upper surface of the fourth ball socket 16 is smaller than that of the lower surface; in this way, the ball end 21 is assembled into the hook base 1 from the fourth ball socket 16 below, the ball end 21 is positioned inside the connecting section, and when the central axis of the hook body 2 and the central axis of the hook base 1 coincide with each other, the upper surface of the ball end 21 is parallel to the upper surface of the second ball socket 14; the arrangement of the second ball socket 14, the third ball socket 15 and the fourth ball socket 16 can reserve a space for the ball end 21 to rotate and swing in the connecting section.
An open spherical ring 25 is arranged on the outer side of the ball end 21 and the inner side of the third ball socket 15, and the open spherical ring 25 is matched with the outer side wall of the ball end 21; the openings of the open spherical rings 25 are provided on either side. The size of the opening is set according to the size of the spherical end 21 of the hook body 2, the size of the opening ensures that the spherical ring 25 with the opening has proper deformation, when in use, the spherical ring 25 with the opening is pinched to smoothly enter the lower end of the hook seat 1, and the spherical end 21 with the opening can not fall out when entering the spherical ring 25 with the opening. The lower end of the spherical open ring 25 is provided with a circular arc opening with the diameter gradually increasing from top to bottom, so that the hook body 2 can rotate and swing on the inner side of the spherical open ring 25. Through-hole one 12 and through-hole two 35 all set up to the U-shaped groove, and through-hole three 62 sets up to the groove of falling the U-shaped, and the connective bar stretches into and stretches out through-hole one 12, through-hole two 35.
Example 5
Referring to fig. 13 and fig. 14, the following technical features are added to embodiment 1 in this embodiment: a pressing block 6 is arranged at the lower end of the compression screw plug 4, a through groove III 61 is formed in the pressing block 6 in the vertical direction, and through holes III 62 are formed in the two sides of the pressing block 6; the upper end of the pressing block 6 is provided with a rotating ring 63 matched with the buffer space 51, and the upper end of the pressing block 6 is provided with a groove for accommodating the boss; the compression ring 5, the thread section and the pressing block 6 are matched to lock the positioning pressing ring 3; the novel double-locking jackscrew mode is realized by the arrangement of the pressing block 6, the pressing plug screw 4 and the pressing spiral ring 5, when the double-locking jackscrew is used, the positioning pressing ring 3 is directly placed in the hook seat 1 and fixed by the fixing shaft 32, the pressing block 6 is placed above the positioning pressing ring 3, the pressing block 6 and the positioning pressing ring 3 are pressed by the pressing spiral ring 5, the pressing spiral ring 5 is matched with the thread section to rotate, and the hook body 2 is locked; the positioning press ring 3, the pressing plug 4 and the pressing spiral ring 5 are stably fixed by using the rotary fixed connecting rod of the pressing plug 4. And briquetting 6 and rotatory ring 63's setting can make and compress tightly the plug screw 4 and compress tightly can not separate when taking place relative rotation between the spiral ring 5, and smooth and easy rotation guarantees that briquetting 6, compress tightly plug screw 4 and compress tightly spiral ring 5 three components and become an organic whole, has guaranteed the stable connection with hook seat 1 screw thread section. When the pressing block 6 is arranged, the height of the limiting section of the positioning pressing ring 3 is L1, and when the pressing block 6 is not arranged, the height of the limiting section of the positioning pressing ring 3 is L2, and L1 is smaller than L2.
When in use, the inner side of the open spherical ring 25 is attached to the outer side of the ball body end 21, and the outer side of the open spherical ring 25 is attached to the third ball socket 15; the positioning compression ring 3 is positioned at the positioning section of the through groove I11, and the fixing shaft 32 is in interference connection with the hook seat 1, so that the effect of stable fixation is perfectly finished; the compression screw plug 4 is used independently, or the compression screw plug 4 and the compression spiral ring 5 are used in a combined mode, or three components of the compression screw plug 4, the compression spiral ring 5 and the pressing block 6 are matched with each other for use, and stable fixing with the hook seat 1 is completed; when the central axes of the ball end 21 and the open spherical ring 25 coincide with the central axis of the hook base 1, the fixed shaft 32 is located at the lowermost end of the fixed hole 13; the ball end 21 and the opening spherical ring 25 swing relative to the hook seat 1, and in the swinging process, the upper end of the opening spherical ring 25 props against the lower end of the positioning compression ring 3, so that the positioning compression ring 3 vertically moves up and down; when the ball end 21 and the open spherical ring 25 swing to the maximum angle, the fixing shaft 32 is located at the uppermost end of the fixing hole 13. The ball end 21 can only swing along the circumferential direction of the concave surface of the ball socket, the stress is uniform, the integral strength is high, and the operation is safe in the operation.
The above description of the embodiments is only for the understanding of the present invention. It should be noted that modifications could be made to the invention without departing from the principle of the invention, which would also fall within the scope of the claims of the invention.
Claims (10)
1. A locking structure for a bone hook system comprises a hook seat, a connecting rod and a positioning press ring, and is characterized in that the positioning press ring is arranged in the hook seat, and the connecting rod transversely penetrates through the hook seat; the hook seat is internally provided with a locking assembly, and the locking assembly is movably connected with the hook seat; the locking assembly comprises a compression screw plug and a compression spiral ring, and the compression spiral ring is arranged on the outer side of the compression screw plug; during the use, place the location clamping ring inside the hook seat earlier, the rotatory location clamping ring that pins of the ring is compressed tightly to this kind of double-lock mode utilization of rethread, and the rotatory fixed connection stick that reuses the plug screw guarantees the stable connection, reduces the operation time, reduces and causes patient's complication risk.
2. The deadlocking structure for a bone hook system of claim 1, wherein the lower end of the compression screw ring is not in contact with the lower end of the compression screw plug, and a buffer space is left between the lower end of the compression screw ring and the lower end of the compression screw plug, so as to reduce friction better and ensure assembly effect; preferably, the lower end of the compression screw plug is provided with a boss protruding downwards in an arc shape; the rotation axis of the boss is superposed with the central axis of the compression screw plug; preferably, the upper end of the compression screw plug is provided with a rotary column which is convenient to operate, and the rotary column is matched with other tools for use when in use, so that the screwing effect can be well realized.
3. The deadlocking structure for a bone hook system of claim 1, wherein at least 1 notch is provided at the upper end of the compression coil, and the centerline of the notch in the same horizontal plane is not parallel to the line on which the edge of the notch is located; preferably, the number of the notches is 4, and the notches are arranged in a circle around the circle center of the compression spiral ring; the notch is better matched with a surgical tool for use, and the locking is assisted; while the circumferential arrangement of the notches facilitates centering.
4. The locking structure for a bone hook system according to claim 1, wherein the lower end of the hook base is provided with a hook body, the hook body extends into the lower end of the hook base, the hook body is movably connected with the hook base, and the upper end of the hook body rotates relative to the lower end of the hook base; so as to ensure that the relative positions of the structure seat and the hook body can be adjusted, and meet the clinical use requirement; when the central axis of the hook body and the central axis of the hook seat are mutually coincident, the surface of the top surface of the hook body is parallel to the surface of the bottom surface of the positioning compression ring; when the central axis of the hook body is not coincident with the central axis of the hook seat, the plane of the top surface of the hook body is crossed with the plane of the bottom surface of the positioning compression ring.
5. The deadlocking structure for a bone hook system of claim 4, wherein the hook body comprises an integrally connected ball end and a C-shaped ring end, the ball end and the C-shaped ring end having a streamlined connection therebetween; the ball end is connected with the lower end of the hook seat, and the C-shaped ring end is used for fixing the appointed bone to be fixed and muscle tissues around the bone to be fixed; preferably, the planar area of the upper surface of the end of the ball is less than the maximum planar cross-sectional area of the end of the ball.
6. The locking structure for a bone hook system according to claim 1, wherein the top end of the hook base is provided with a first through hole in the up-down direction, the hook base is provided with a first through hole in the left-right direction, and the first through hole is communicated with the first through hole; a positioning compression ring and a locking assembly are placed in the through groove I, and the through hole I extends into the connecting rod; preferably, the through groove is divided into a threaded section at the upper end, a positioning section at the middle end and a connecting section at the lower end; the screw section department is provided with the dead subassembly of lock, and the location section sets up the location clamping ring, and the connecting segment holds the ball end.
7. The deadlocking structure for a bone hook system of claim 6, wherein the retaining collar comprises a position-limiting section and a ball-containing section which are integrally connected, and the diameter of the position-limiting section is larger than that of the ball-containing section; and a second through groove in the vertical direction is formed in the top end of the positioning compression ring, a second through hole in the left-right direction is formed in the positioning compression ring, and the second through groove is communicated with the second through hole.
8. The deadlocking structure for a bone hook system of claim 1, wherein the positioning compression ring is in interference fit with the hook base through a connecting structure, so as to prevent the positioning compression ring from rotating and falling off relative to the hook base and ensure stability.
9. The locking structure for a bone hook system according to claim 8, wherein the connecting structure comprises fixing shafts arranged at both sides of the positioning compression ring in a mirror image manner, and fixing holes arranged at corresponding positions of the hook seats and allowing the fixing shafts to extend and vertically move; the diameter of the fixing hole is smaller than that of the fixing shaft; the fixed shaft and the fixed hole are connected in a rotary interference manner, so that the anti-rotation anti-disengagement structure is anti-rotation and anti-disengagement, and the firmness of connection is ensured.
10. The method of assembling a deadlocking structure for a bone hook system of any of claims 1 to 9, wherein the retaining ring is placed into the hook base from an upper end, and the retaining shaft is located in the retaining hole; the compression ring is rotated, the compression ring and the upper end of the inner side wall of the hook seat are assembled for use, and the compression ring is fixed and positioned; the connecting rod stretches into the through hole and stretches out of the hook seat, and the connecting rod is fixed by rotating the compression screw plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111494712.XA CN114145828A (en) | 2021-12-09 | 2021-12-09 | Locking structure for bone hook system and assembling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111494712.XA CN114145828A (en) | 2021-12-09 | 2021-12-09 | Locking structure for bone hook system and assembling method thereof |
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| CN114145828A true CN114145828A (en) | 2022-03-08 |
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| CN202111494712.XA Pending CN114145828A (en) | 2021-12-09 | 2021-12-09 | Locking structure for bone hook system and assembling method thereof |
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