CN107736925B - Sleeve, auxiliary device for installing connecting rod and installation method of connecting rod - Google Patents
Sleeve, auxiliary device for installing connecting rod and installation method of connecting rod Download PDFInfo
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- CN107736925B CN107736925B CN201711124944.XA CN201711124944A CN107736925B CN 107736925 B CN107736925 B CN 107736925B CN 201711124944 A CN201711124944 A CN 201711124944A CN 107736925 B CN107736925 B CN 107736925B
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000009434 installation Methods 0.000 title abstract description 15
- 230000015572 biosynthetic process Effects 0.000 claims 2
- 210000002445 nipple Anatomy 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 abstract description 13
- 238000001356 surgical procedure Methods 0.000 abstract description 10
- 206010052428 Wound Diseases 0.000 description 6
- 208000027418 Wounds and injury Diseases 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- 230000000740 bleeding effect Effects 0.000 description 5
- 230000000451 tissue damage Effects 0.000 description 4
- 231100000827 tissue damage Toxicity 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 3
- 241001079814 Symphyotrichum pilosum Species 0.000 description 2
- 235000004224 Typha angustifolia Nutrition 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 208000037816 tissue injury Diseases 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 208000020307 Spinal disease Diseases 0.000 description 1
- 208000020339 Spinal injury Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000002324 minimally invasive surgery Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000029663 wound healing Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- 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
- A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
- A61B17/7083—Tools for guidance or insertion of tethers, rod-to-anchor connectors, rod-to-rod connectors, or longitudinal elements
- A61B17/7085—Tools for guidance or insertion of tethers, rod-to-anchor connectors, rod-to-rod connectors, or longitudinal elements for insertion of a longitudinal element down one or more hollow screw or hook extensions, i.e. at least a part of the element within an extension has a component of movement parallel to the extension's axis
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- 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
- A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
- A61B17/7083—Tools for guidance or insertion of tethers, rod-to-anchor connectors, rod-to-rod connectors, or longitudinal elements
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Abstract
The invention discloses a sleeve, an auxiliary device for installing a connecting rod and an installation method of the connecting rod, wherein the sleeve comprises a cylinder body, the cylinder body comprises a first end and a second end which are oppositely arranged, a clamping head used for being connected with a tail cap of a pedicle screw in a buckling mode is arranged at the second end of the cylinder body, a through hole penetrating through the first end and the second end is arranged in the cylinder body, a first guiding through groove, a second guiding through groove, a limiting through groove and a guiding wall are arranged on the side wall of the through hole, the second guiding through groove is arranged opposite to the first guiding through groove in a penetrating mode, the first guiding through groove penetrates through the first end to the second end, the second guiding through groove penetrates through the second end, the limiting through groove penetrates through the first end, and the guiding wall is arranged between the. The sleeve, the auxiliary device for installing the connecting rod and the installation method of the connecting rod improve the installation accuracy of the connecting rod by utilizing all guiding characteristics of the cylinder body, and further improve the efficiency of minimally invasive spine surgery.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a sleeve, an auxiliary device for installing a connecting rod and an installation method of the connecting rod.
Background
Through clinical research for many years, the spinal nail rod internal fixing system becomes a mature spinal minimally invasive surgical medical instrument which is widely applied to treatment of spinal injuries and related spinal diseases. Minimally invasive surgery is receiving increasing attention from physicians and patients because of its ability to reduce intraoperative tissue damage and bleeding, reduce patient surgical pain, and shorten wound healing time.
In the spinal nail rod internal fixing system, an auxiliary device for installing the connecting rod is often used for installing the connecting rod. When the traditional auxiliary device for installing the connecting rod is used, the specific operation method comprises the following steps: holding excellent ware and being fixed in connective bar one end, holding excellent ware along transversely placing (holding excellent ware and pedicle of vertebral arch screw approximate perpendicular this moment) to with the connective bar with horizontal excellent form of wearing arrange in first pedicle of vertebral arch screw U type groove, then promote the connective bar through holding excellent ware and be close to second pedicle of vertebral arch screw U type groove, when being close to U type groove, the upset is held excellent ware to parallel with the pedicle of vertebral arch screw, can insert the connective bar in second pedicle of vertebral arch screw U type groove this moment. By this reciprocating, the connecting rod can be inserted into the U-shaped groove of the multi-pedicle screw.
When the traditional auxiliary device for installing the connecting rod is used for installing the connecting rod, the rod needs to be transversely arranged (in the direction intersecting with the axial line direction of the pedicle screw), and the rod is easy to deviate from a correct route in the installation process, so that one end of the connecting rod cannot be arranged in a second U-shaped groove of the pedicle screw, the rod needs to be penetrated for many times, and the installation efficiency is low; meanwhile, when the traditional auxiliary device for installing the connecting rod is applied to minimally invasive spinal surgery, higher requirements are required for the operation experience of doctors.
Disclosure of Invention
Accordingly, it is desirable to provide a sleeve, an auxiliary device for attaching a connecting rod, and a method for attaching a connecting rod, which can improve the accuracy of attaching a connecting rod and the efficiency of attaching the connecting rod.
The technical scheme is as follows:
the utility model provides a sleeve, includes the barrel, the barrel includes relative first end and the second end that sets up, the second end of barrel is equipped with the holding head that is used for being connected with the tail cap buckle of pedicle of vertebral arch screw, the barrel is equipped with and runs through first end reaches the through-hole of second end, the lateral wall of through-hole be equipped with first direction lead to the groove, with the relative second direction that sets up of first direction lead to the groove leads to groove, spacing logical groove and guide wall, first direction lead to the groove follow first end is run through to the second end setting, the second direction leads to the groove and runs through the second end sets up, spacing logical groove runs through first end sets up, the guide wall set up in the second direction lead to the groove and spacing between leading to the groove.
Above-mentioned sleeve can be applied to when the direction installation of connective bar, the connective bar can be followed telescopic through-hole's the direction of depth and moved down to through the free end of connective bar and the cooperation of direction wall direction, make the free end of connective bar lead to the logical groove through the leading-in telescopic second direction of telescopic direction wall, then the upset, move the connective bar and make the free end of connective bar pass through telescopic second direction and lead to the logical groove and remove to another telescopic second direction, and then can make the connective bar set up in two sleeves. When the sleeve is applied to guiding installation of the connecting rod, the connecting rod can longitudinally enter along the length direction of the sleeve, and a novel rod placing mode is provided compared with the existing transverse rod placing mode; when the connecting rod is applied to the minimally invasive spine surgery, the longitudinal rod entering and placing mode can reduce the wound area of the connecting rod entering the rod penetrating position of the first sleeve, and is more beneficial to the rehabilitation of a patient.
The technical solution is further explained below:
in one embodiment, a first guiding portion in smooth transition is arranged between the limiting through groove and the guide wall, and a second guiding portion in smooth transition is arranged between the second guiding through groove and the guide wall. When the sleeve is used for mounting the connecting rod, the first lead-in part is conveniently abutted and matched with the limiting body of the rod holder, and the limiting body can rotate around the first lead-in part; the arrangement of the second leading-in part facilitates the stable rotation of the connecting rod around the second leading-in part.
In one embodiment, the first end of the barrel is provided with an external thread structure, or the second end of the barrel is provided with an internal thread structure.
In one embodiment, the clamping head includes two spaced-apart clamping bodies and a resilient plate disposed on the clamping bodies, the first guiding through groove and the second guiding through groove are disposed between the two clamping bodies, the clamping bodies are provided with clamping grooves, and the resilient plate is provided with protrusions. The clamping groove of the clamp body can be further utilized to be in sleeve fit with the tail cap of the pedicle screw, the bulge on the elastic sheet is clamped with the limiting hole of the tail cap, and the clamping head is further fixed on the tail cap, so that the sleeve and the pedicle screw are fixedly connected; when the two need be dismantled, only need make the arch of shell fragment pop out, separate with spacing hole, this holding head can be taken out from the tail cap, realizes the separation of sleeve and pedicle of vertebral arch screw.
The invention also provides an auxiliary device for installing the connecting rod, which comprises the sleeve, at least two sleeves and a rod holder, wherein the rod holder comprises a sleeve joint part and a limiting body, the sleeve joint part is arranged at the free end of the limiting body, the limiting body can be in limiting fit with the limiting through grooves of the at least two sleeves and the first guiding through groove, and the rod holder is detachably connected with the connecting rod through the sleeve joint part.
The auxiliary device for installing the connecting rod can utilize the limiting bodies of the rod holding bodies to be respectively in limiting fit with the limiting grooves of the two sleeves to enable the two second guiding through grooves of the sleeves to be symmetrical, the connecting rod can be inserted into one of the through holes of the sleeves through the rod holding device, the connecting rod is driven to move downwards along the depth direction of one of the through holes of the sleeves through the rod holding device, the free end of the connecting rod is guided into the second guiding through groove of the sleeve through the guide wall of the sleeve and moves towards the second guiding through groove of the other sleeve, and therefore the connecting rod can be accurately arranged in the two sleeves. The auxiliary device for installing the connecting rod can enable the connecting rod to longitudinally enter along the length direction of the sleeves, meanwhile, the connecting rod is accurately arranged in the two sleeves by accurately inserting one sleeve into the other sleeve, so that the installation efficiency is greatly improved, and a new rod arranging mode is provided compared with the existing transverse rod arranging mode; when the connecting rod is applied to the minimally invasive spine surgery, the wound area of the connecting rod entering the rod penetrating position of the first sleeve can be reduced by the longitudinal rod entering and placing mode, and the rehabilitation of a patient is facilitated; meanwhile, repeated upper penetrating operation is not needed, so that tissue injury and bleeding of a patient can be reduced, the requirements on the operation experience of a doctor are lowered, and popularization of minimally invasive spinal surgery is facilitated.
In one embodiment, the auxiliary device further comprises a pressing barrel assembly, the pressing barrel assembly comprises a pressing barrel and a driving sleeve rotatably connected with one end of the pressing barrel, the pressing barrel is provided with a matching hole for sleeving the pressing barrel, one end of the pressing barrel is provided with a pressing body which is convexly arranged, the pressing body is used for pressing the connecting rod, the driving sleeve is provided with an internal thread hole which is connected and matched with the external thread structure, and the driving sleeve can rotate to drive the pressing barrel to move back and forth along the length direction of the pressing barrel. And then the rotary power of the driving sleeve can be converted into linear driving force by rotating the driving sleeve, and the pressing cylinder is driven to move back and forth along the length direction of the sleeve. Of course, the driving sleeve may be a nut sleeve, and the external thread structure is a screw rod.
In one embodiment, a rotatable clamping sleeve piece is arranged in the driving sleeve, the clamping sleeve piece is fixed with the pressing cylinder, a first guide boss is arranged in the clamping sleeve piece, and the first guide boss is in guide fit with the limiting through groove or/and the first guide through groove; or the inner wall of the matching hole is provided with a second guide boss, and the second guide boss is in guide fit with the limiting through groove or/and the first guide through groove. The first guide boss or the second guide boss is used for guiding and matching with the limiting through groove or/and the first guide through groove, so that the pressing cylinder does not rotate when the driving sleeve drives the pressing cylinder to move; meanwhile, after the first guide boss or the second guide boss is embedded into the limiting through groove or/and the first guide through groove, the hollow and grooved cylinder body is supported to a certain extent, and the sleeve is prevented from deforming under stress.
The invention also provides a connecting rod mounting method, which utilizes the auxiliary device for mounting the connecting rod and comprises the following steps:
(1) two pedicle screws are fixedly arranged at preset positions at intervals, two sleeves are respectively fixed on tail caps of the corresponding pedicle screws, and two clamping grooves of the tail caps are respectively communicated with a first guide through groove and a second guide through groove of each sleeve;
(2) the second guiding through grooves of the two sleeves are symmetrical, the connecting rod moves downwards along the depth direction of the through hole of one sleeve, and the free end of the connecting rod is in guiding fit with the guiding wall;
(3) continuously moving the connecting rod to lead the free end of the connecting rod into the second guide through groove of the sleeve through the guide wall of the sleeve;
(4) and then the connecting rod is turned over so that the free end of the connecting rod passes through the second guiding through groove of the sleeve and moves towards the second guiding through groove of the other sleeve, and the connecting rod is arranged in the two sleeves.
The method for installing the connecting rod enables the connecting rod to longitudinally enter along the length direction of the sleeve, and provides a new rod placing mode relative to the existing transverse rod placing mode; when the connecting rod is applied to minimally invasive spine surgery, the longitudinal rod entering and placing mode can reduce the wound area of the connecting rod entering the rod penetrating position of the first sleeve, is more beneficial to the recovery of a patient, does not need to penetrate for many times, and can reduce the tissue damage and bleeding of the patient.
The technical solution is further explained below:
in one embodiment, after the step (4), the method further comprises pressing down the connecting rod to enable the connecting rod to be arranged in the clamping grooves of the tail caps of the two pedicle screws. And then can push down the connective bar to the tail cap of pedicle of vertebral arch screw in following the sleeve, reuse the internal thread hole cooperation of locking screw and tail cap, can fix the connective bar on the tail cap, realize that the interval between two pedicle of vertebral arch screws is fixed.
In one embodiment, the connecting rod further comprises a connecting rod, one end of the connecting rod is connected with the sleeving part of the rod holder, in the step (2), the limiting body of the rod holder is respectively in limiting fit with the limiting grooves of the two sleeves, the second guiding through grooves of the two sleeves are symmetrical, and the connecting rod moves downwards along the depth direction of the through hole of one sleeve by driving the rod holder. And then can utilize the spacing body of holding excellent ware to realize two telescopic second direction logical groove is symmetrical, and then can improve and drive the connective bar and remove the accuracy that leads to the logical groove to another telescopic second from a telescopic second direction logical groove.
Drawings
FIG. 1 is a schematic view of a sleeve according to the present invention from a first perspective;
FIG. 2 is a second perspective view of the sleeve of the present invention;
FIG. 3 is a schematic view of the auxiliary device for mounting a connecting rod according to the present invention;
FIG. 4 is a schematic view of the assembly of the sleeve and the cartridge assembly of the present invention;
FIG. 5 is an exploded view of the sleeve and cartridge assembly of FIG. 4;
FIG. 6 is a semi-sectional schematic view of a drive sleeve according to the present invention;
FIG. 7 is a first schematic view of the attachment of the connector of the present invention;
FIG. 8 is a second schematic view of the attachment of the connector of the present invention;
FIG. 9 is a third schematic view of the attachment of the connector of the present invention;
FIG. 10 is a fourth schematic view of the attachment of the connector of the present invention;
fig. 11 is a schematic view showing a state of mounting the connecting rod according to the present invention.
Description of reference numerals:
10. the clamping device comprises a sleeve, 100, a barrel body, 102, a first end, 104, a second end, 110, a clamping head, 112, a clamping body, 106, a clamping groove, 114, a spring sheet, 108, a protrusion, 120, a through hole, 130, a first guide through groove, 140, a second guide through groove, 150, a limiting through groove, 160, a guide wall, 162, a first guide-in part, 164, a second guide-in part, 170, an external thread structure, 20, a rod holder, 22, a sleeve part, 24, a limiting body, 30, a pressing barrel assembly, 300, a pressing barrel, 310, a matching hole, 320, a pressing body, 400, a driving sleeve, 410, an internal thread hole, 420, a clamping sleeve part, 422, a first guide boss, 40, a pedicle screw, 42, a tail cap, 44, a clamping groove, 50 and a connecting rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The terms "first" and "second" used herein do not denote any particular order or quantity, but rather are used to distinguish one element from another.
As shown in fig. 1 and 2, the present invention provides a sleeve 10, including a barrel 100, the barrel 100 includes a first end 102 and a second end 104 disposed opposite to each other, a clamping head 110 for snap-connecting with a tail cap 42 of a pedicle screw 40 is disposed at the second end 104 of the barrel 100, the barrel 100 is disposed with a through hole 120 penetrating the first end 102 and the second end 104, a first guiding through groove 130, a second guiding through groove 140 disposed opposite to the first guiding through groove 130, a limiting through groove 150, and a guiding wall 160 are disposed on a side wall of the through hole 120, the first guiding through groove 130 penetrates the first end 102 to the second end 104, the second guiding through groove 140 penetrates the second end 104, the limiting through groove 150 penetrates the first end 102, and the guiding wall 160 is disposed between the second guiding through groove 140 and the limiting through groove 150.
As shown in fig. 1, 2 and 7 to 11, when the sleeve 10 is applied to the guiding installation of the connecting rod 50, the connecting rod 50 may move downward along the depth direction of the through hole 120 of the sleeve 10, and the free end of the connecting rod 50 is guided to the guide wall 160 through the guide wall 160 of the sleeve 10, so that the free end of the connecting rod 50 is guided into the second guide through groove 140 of the sleeve 10 through the guide wall 160 of the sleeve 10, and then the connecting rod 50 is turned over and moved so that the free end of the connecting rod 50 passes through the second guide through groove 140 of the sleeve 10 and moves to the second guide through groove 140 of the other sleeve 10, so that the connecting rod 50 may be installed in the two sleeves 10. When the sleeve 10 is applied to guiding installation of the connecting rod 50, the connecting rod 50 can enter longitudinally along the length direction of the sleeve 10, and a new rod placing mode is provided compared with the existing transverse rod placing mode; when the connecting rod 50 is applied to the minimally invasive spine surgery, the longitudinal rod entering and placing mode can reduce the wound area of the connecting rod 50 entering the rod penetrating position of the first sleeve 10, and is more beneficial to the rehabilitation of a patient.
As shown in fig. 1 to 3, the present invention further provides an auxiliary device for installing a connecting rod, including the above-mentioned sleeve 10, where there are at least two sleeve 10, and further including a rod holder 20, where the rod holder 20 includes a sleeve-connection portion 22 and a limiting body 24, the sleeve-connection portion 22 is disposed at a free end of the limiting body 24, the limiting body 24 can be in limit fit with the limiting through grooves 150 and the first guiding through grooves 130 of at least two sleeve 10, and the rod holder 20 is detachably connected with the connecting rod 50 through the sleeve-connection portion 22.
As shown in fig. 1 to 3 and 7 to 11, the auxiliary device for installing the connecting rod may be symmetrical to the second guiding grooves 140 of the two sleeves 10 by engaging the position-limiting bodies 24 of the rod-holding body with the position-limiting grooves of the two sleeves, respectively, the connecting rod 50 may be inserted into the through hole 120 of one of the sleeves 10 through the rod holder 20, and by driving the rod holder 20 to move the connecting rod 50 downward along the depth direction of the through hole 120 of one of the sleeves 10, the free end of the connecting rod 50 may be guided into the second guiding groove 140 of the sleeve 10 through the guiding wall 160 of the sleeve 10 and move toward the second guiding groove 140 of the other sleeve 10, so that the connecting rod 50 may be accurately disposed in the two sleeves 10. The auxiliary device for installing the connecting rod can enable the connecting rod 50 to longitudinally enter along the length direction of the sleeves 10, meanwhile, the connecting rod 50 is accurately arranged on the two sleeves 10 by accurately inserting one sleeve 10 into the other sleeve 10, so that the installation efficiency is greatly improved, and compared with the existing transverse rod arrangement mode, a novel rod arrangement mode is provided; when the connecting rod 50 is applied to the minimally invasive spine surgery, the longitudinal rod entering and placing mode can reduce the wound area of the connecting rod 50 entering the rod penetrating position of the first sleeve 10, and is more beneficial to the rehabilitation of a patient; meanwhile, repeated upper penetrating operation is not needed, so that tissue injury and bleeding of a patient can be reduced, the requirements on the operation experience of a doctor are lowered, and popularization of minimally invasive spinal surgery is facilitated.
As shown in fig. 1 and 5, in the present embodiment, a first introduction portion 162 is provided between the limiting through groove 150 and the guide wall 160, and a second introduction portion 164 is provided between the second guiding through groove 140 and the guide wall 160. When the sleeve 10 is used to mount the connecting rod 50, the first lead-in portion 162 is conveniently pressed against the limiting body 24 of the rod holder 20, and the limiting body 24 can rotate around the first lead-in portion 162 smoothly; the second lead-in part 164 is arranged to facilitate smooth rotation of the connecting rod 50 around the second lead-in part 164, so that the process of turning the connecting rod 50 from the longitudinal direction to the transverse direction is smooth, and damage to peripheral tissues is reduced.
As shown in fig. 1, fig. 3, fig. 4 and fig. 5, the first end 102 of the cylinder 100 is provided with the external thread structure 170, the auxiliary device further includes a pressing cylinder 300 assembly 30, the pressing cylinder 300 assembly 30 includes a pressing cylinder 300 and a driving sleeve 400 rotatably connected to one end of the pressing cylinder 300, the pressing cylinder 300 is provided with a matching hole 310 for sleeving the sleeve 10, one end of the pressing cylinder 300 is provided with a protruding abutting body 320, the abutting body 320 is used for abutting against the connecting rod 50, the driving sleeve 400 is provided with an internal thread hole 410 connected to and matched with the external thread structure 170, and the driving sleeve 400 rotates to drive the pressing cylinder 300 to move back and forth along the length direction of the sleeve 10. Further, the driving sleeve 400 is rotated to convert the rotational power of the driving sleeve 400 into a linear driving force, so that the driving pressing cylinder 300 moves back and forth along the length direction of the sleeve 10 and moves along the axis of the pedicle screw 40, and the tissue around the tail cap 42 is almost not damaged. Of course, in particular, the driving sleeve 400 may be a nut sleeve, and the external thread structure 170 is a screw rod; in another embodiment, the second end 104 of the barrel 100 is provided with an internal thread structure, so that the connecting rod 50 can be fixed on the tail cap of the pedicle screw 40 in a manner of pressing the rod in the internal thread structure; specifically, a locking screw can be inserted into the barrel 100 by an operating tool, the operating tool is rotated to enable the internal thread structure of the locking screw to be in screw fit and continuously penetrate into the barrel, the connecting rod 50 is pressed in the clamping groove 44 of the tail cap 42, meanwhile, the locking screw is in threaded connection with the internal thread hole of the tail cap 42, and the connecting rod 50 is fixed on the tail cap 42 of the pedicle screw 40. Further, a rotatable clamping sleeve member 420 is arranged in the driving sleeve 400, the clamping sleeve member 420 is fixed with the pressing cylinder 300, a first guide boss 422 is arranged in the clamping sleeve member 420, and the first guide boss 422 is in guide fit with the limiting through groove 150 or/and the first guide through groove 130; or the inner wall of the fitting hole 310 is provided with a second guiding boss, and the second guiding boss is in guiding fit with the limiting through groove 150 or/and the first guiding through groove 130. Furthermore, the first guide boss 422 or the second guide boss is used for guiding and matching with the limiting through groove 150 or/and the first guide through groove 130, so that when the driving sleeve 400 drives the pressing cylinder 300 to move, the pressing cylinder 300 does not rotate; meanwhile, the first guiding boss 422 or the second guiding boss is embedded into the limiting through groove 150 or/and the first guiding through groove 130, and the inner wall of the pressing cylinder 300 is attached to the outer wall of the sleeve 10, so that the hollow and grooved cylinder 100 is supported to a certain extent, and the sleeve 10 is prevented from deforming under stress.
As shown in fig. 1 and fig. 2, in the present embodiment, the clamping head 110 includes two spaced-apart clamp bodies 112 and a spring plate 114 disposed on the clamp bodies 112, a first guiding through groove 130 and a second guiding through groove 140 are disposed between the two clamp bodies 112, the clamp body 112 is provided with a clamp groove 106, and the spring plate 114 is provided with a protrusion 108. The clamping groove 106 of the clamp body 112 can be further utilized to be in sleeve fit with the tail cap 42 of the pedicle screw 40, the protrusion 108 on the spring plate 114 is utilized to be clamped with the limiting hole of the tail cap 42, and the clamping head 110 is further fixed on the tail cap 42, so that the sleeve 10 is fixedly connected with the pedicle screw 40; when the two are needed to be disassembled, the clamping head 110 can be drawn out from the tail cap 42 only by using the unlocking gun to make the bulge 108 of the elastic sheet 114 pop out and separate from the limiting hole, so as to realize the separation of the sleeve 10 and the pedicle screw 40.
The outer shape of the cylinder 100 may have various shapes such as a cylinder, a combination of a cylinder and a polygonal body, and the like. As shown in fig. 2, in this embodiment, the outer wall of the barrel 100 is provided with two limiting surfaces which are oppositely arranged and two arc surfaces which are arranged between the two limiting surfaces, the first guiding through groove 130 is arranged on the same side of one of the limiting surfaces, and the second guiding through groove 140 is arranged on the same side of the other limiting surface, so that the barrel 100 is convenient to be sleeved and fixed, the extrusion force during sleeving and fixing is reduced to increase the friction fixing force, and further, the deformation of the barrel 100 due to the matching with the pressurizer can be reduced.
In this embodiment, the pressing end of the pressing body is provided with a pressing groove adapted to the connecting rod, so that the pressing body is tightly attached to the connecting rod through the pressing groove, and the pressing process is not deviated or staggered. Further, still include distraction mechanism, distraction mechanism is used for adjusting and fixed the interval between two sleeves. The opening mechanism is the existing opening device such as opening pliers, pressure pliers and the like.
As shown in fig. 3 and 7 to 11, based on the above-mentioned auxiliary device for installing a connection rod, the present invention further provides an installation method of a connection rod, which can ensure that the connection rod moves in a preset track under the guiding action of each guiding feature of the auxiliary device during rod feeding and rod penetrating, the rod placing position is accurate, the effect is good, multiple rod penetrating is not needed, and the connection rod is placed in a body without turning over, so that tissue damage to a patient caused by an operation is reduced. Specifically, the method comprises the following steps:
(1) two pedicle screws are fixedly arranged at preset positions at intervals, two sleeves are respectively fixed on tail caps of the corresponding pedicle screws, and two clamping grooves of the tail caps are respectively communicated with a first guide through groove and a second guide through groove of each sleeve;
(2) simultaneously, the connecting rod moves downwards along the depth direction of the through hole of one sleeve, and the free end of the connecting rod is in guiding fit with the guide wall;
(3) continuously moving the connecting rod to lead the free end of the connecting rod into the second guide through groove of the sleeve through the guide wall of the sleeve;
(4) then the connecting rod is turned over, so that the free end of the connecting rod penetrates through the second guiding through groove of the sleeve and moves towards the second guiding through groove of the other sleeve, and the connecting rod is arranged in the two sleeves;
(5) adjusting the angles of the connecting rod on the two sleeves, and pressing the connecting rod downwards to enable the connecting rod to be arranged in clamping grooves of tail caps of the two pedicle screws;
(6) and adjusting the distance between the two pedicle screws, and screwing down the locking screws to fix the connecting rod on the tail cap.
The method for installing the connecting rod enables the connecting rod to longitudinally enter along the length direction of the sleeve, and provides a new rod placing mode relative to the existing transverse rod placing mode; when the connecting rod is applied to minimally invasive spine surgery, the longitudinal rod entering and placing mode can reduce the wound area of the connecting rod entering the rod penetrating position of the first sleeve, is more beneficial to the recovery of a patient, does not need to penetrate for many times, and can reduce the tissue damage and bleeding of the patient.
The installation method of the connecting rod further comprises the step of connecting one end of the connecting rod with a sleeving part of the rod holder, in the step (2), the limiting body of the rod holder is respectively in limiting fit with the limiting grooves of the two sleeves, the second guiding through grooves of the two sleeves are symmetrical, the connecting rod moves downwards along the depth direction of the through hole of one sleeve by driving the rod holder, the rod holder is turned over to enable the connecting rod to be arranged in the two sleeves, the angle of the connecting rod on the two sleeves is adjusted by adjusting the angle of the rod holder, the rod holder is separated from the connecting rod, the connecting rod is pressed downwards, and the connecting rod is arranged in clamping grooves of tail caps of the two pedicle screws. And then can utilize the spacing body of holding excellent ware to realize two telescopic second direction logical groove is symmetrical, and then can improve and drive the connective bar and remove the accuracy that leads to the logical groove to another telescopic second from a telescopic second direction logical groove. Further, still include before the connective bar sets up in two telescopic second direction logical grooves, should hold the spacing body of excellent ware and lead to the spacing cooperation of groove with two telescopic spacing logical grooves and first direction all the time, make two telescopic second direction logical grooves align.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides a sleeve, a serial communication port, the novel nipple rectifier comprises a cylindrical shel, the barrel is held including relative first end and the second that sets up, the second end of barrel is equipped with the holding head that is used for being connected with the tail cap buckle of pedicle of vertebral arch screw, the barrel is equipped with and runs through first end reaches the through-hole of second end, the lateral wall of through-hole be equipped with first direction lead to the groove, with the relative second direction that sets up of first direction lead to the groove leads to groove, spacing logical groove and guide wall, first direction leads to the groove follow first end runs through to the second end setting, the second direction leads to the groove and runs through the second end setting, spacing logical groove runs through first end setting, the guide wall set up in the second direction leads to the groove and spacing between the groove.
2. A sleeve as claimed in claim 1, wherein a first smoothly-transitioned lead-in portion is provided between the limiting channel and the guide wall, and a second smoothly-transitioned lead-in portion is provided between the second guiding channel and the guide wall.
3. A sleeve as claimed in claim 1, wherein the first end of the barrel is provided with an external thread formation or the second end of the barrel is provided with an internal thread formation.
4. A socket according to any one of claims 1 to 3, wherein the holder head comprises two spaced apart holders and a resilient plate disposed on the holders, the first and second guiding grooves are disposed between the two holders, the holders are provided with holding grooves, and the resilient plate is provided with protrusions.
5. An auxiliary device for installing a connecting rod, which is characterized by comprising at least two sleeves according to any one of claims 1 to 4, and further comprising rod holders, wherein each rod holder comprises a sleeve-connection part and a limiting body, the sleeve-connection part is arranged at the free end of the limiting body, the limiting body can be in limiting fit with the limiting through grooves of at least two sleeves and the first guiding through groove, and the rod holders are detachably connected with the connecting rod through the sleeve-connection parts.
6. The auxiliary device for installing the connecting rod as claimed in claim 5, further comprising a pressing barrel assembly, wherein the pressing barrel assembly comprises a pressing barrel and a driving sleeve rotatably connected with one end of the pressing barrel, the pressing barrel is provided with a matching hole for sleeving the sleeve, one end of the pressing barrel is provided with a pressing body which is convexly arranged and used for pressing the connecting rod, the first end of the barrel body is provided with an external thread structure, the driving sleeve is provided with an internal thread hole which is connected and matched with the external thread structure, and the rotation of the driving sleeve can drive the pressing barrel to move back and forth along the length direction of the sleeve.
7. The auxiliary device for installing the connecting rod as claimed in claim 6, wherein a rotatable clamping sleeve member is arranged in the driving sleeve, the clamping sleeve member is fixed with the pressing cylinder, a first guide boss is arranged in the clamping sleeve member, and the first guide boss is in guide fit with the limiting through groove or/and the first guide through groove; or the inner wall of the matching hole is provided with a second guide boss, and the second guide boss is in guide fit with the limiting through groove or/and the first guide through groove.
8. A method of installing a connector rod, using the attachment for a connector rod of any one of claims 5 to 7, comprising the steps of:
(1) two pedicle screws are fixedly arranged at preset positions at intervals, the two sleeves are respectively fixed on the tail caps of the corresponding pedicle screws, and the two clamping grooves of the tail caps are respectively communicated with the first guide through groove and the second guide through groove of the sleeves;
(2) the second guiding through grooves of the two sleeves are symmetrical, the connecting rod moves downwards along the depth direction of the through hole of one sleeve, and the free end of the connecting rod is in guiding fit with the guiding wall;
(3) continuously moving the connecting rod to lead the free end of the connecting rod into the second guide through groove of the sleeve through the guide wall of the sleeve;
(4) and then the connecting rod is turned over so that the free end of the connecting rod passes through the second guiding through groove of the sleeve and moves towards the second guiding through groove of the other sleeve, and the connecting rod is arranged in the two sleeves.
9. The method for installing a connecting rod as claimed in claim 8, further comprising pressing down the connecting rod after step (4) to place the connecting rod in the slots of the tail caps of the two pedicle screws.
10. A connecting rod mounting method according to claim 8, wherein after the step (1) and before the step (2), the connecting rod further comprises connecting one end of the connecting rod with a sleeve part of a rod holder, and in the step (2), the connecting rod further comprises limiting bodies of the rod holder respectively and in limiting fit with limiting grooves of two sleeves, so that the second guiding through grooves of the two sleeves are symmetrical, and the connecting rod is driven to move downwards along the depth direction of the through hole of one sleeve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711124944.XA CN107736925B (en) | 2017-11-14 | 2017-11-14 | Sleeve, auxiliary device for installing connecting rod and installation method of connecting rod |
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| CN201711124944.XA CN107736925B (en) | 2017-11-14 | 2017-11-14 | Sleeve, auxiliary device for installing connecting rod and installation method of connecting rod |
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| CN107736925A CN107736925A (en) | 2018-02-27 |
| CN107736925B true CN107736925B (en) | 2020-03-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109758223B (en) * | 2019-01-15 | 2021-05-25 | 常州鼎健医疗器械有限公司 | Minimally invasive surgical instrument using PEEK connecting rod |
| CN111631787A (en) * | 2020-04-16 | 2020-09-08 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | Long-arm nail guiding device and using method thereof |
| CN113440241B (en) * | 2021-06-22 | 2023-07-25 | 浙江德康医疗器械有限公司 | Screw implantation auxiliary sleeve for minimally invasive spine surgery |
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| CN208551991U (en) * | 2017-11-14 | 2019-03-01 | 山东威高骨科材料股份有限公司 | Sleeve and auxiliary device for installing pitman |
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| US8152810B2 (en) * | 2004-11-23 | 2012-04-10 | Jackson Roger P | Spinal fixation tool set and method |
| KR100942226B1 (en) * | 2009-09-30 | 2010-02-16 | 주식회사 지에스메디칼 | Rod holder and minimally invasive system for spinal surgical operation using the same |
| US8206395B2 (en) * | 2010-06-18 | 2012-06-26 | Spine Wave, Inc. | Surgical instrument and method for the distraction or compression of bones |
| CN202313683U (en) * | 2011-09-07 | 2012-07-11 | 常州市康辉医疗器械有限公司 | Posterior thoracolumbar minimally-invasive bone cement spinal internal fixing system |
| CN103120598B (en) * | 2011-11-18 | 2015-07-29 | 北京纳通科技集团有限公司 | Spinal orthopedic bar apparatus for placing |
| CN202932996U (en) * | 2012-11-15 | 2013-05-15 | 寇万红 | Spinal orthotic device |
| CN104783879B (en) * | 2015-05-12 | 2017-07-11 | 山东威高骨科材料股份有限公司 | A kind of pedicle screw and pressure bar device |
| US9913670B2 (en) * | 2015-08-31 | 2018-03-13 | Mantiz Logitech Co., Ltd. | Rod inserter for fixing of pedicle screw, screw holder with joint for minimal invasive surgery, screw reducer for minimal invasive surgery and apparatus for minimal invasive surgery using these devices |
| DE102015120955A1 (en) * | 2015-12-02 | 2017-06-08 | Aesculap Ag | Medical instrument and medical instrument |
| CN105662564A (en) * | 2016-02-26 | 2016-06-15 | 邓宇 | Fixing sleeve of thoracolumbar vertebral fracture posterior minimally-invasive nail rod fixing external skin restoration system |
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| CN208551991U (en) * | 2017-11-14 | 2019-03-01 | 山东威高骨科材料股份有限公司 | Sleeve and auxiliary device for installing pitman |
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