CN114681033B - Connecting device and posterior occipital-cervical fixation system - Google Patents
Connecting device and posterior occipital-cervical fixation system Download PDFInfo
- Publication number
- CN114681033B CN114681033B CN202011593030.XA CN202011593030A CN114681033B CN 114681033 B CN114681033 B CN 114681033B CN 202011593030 A CN202011593030 A CN 202011593030A CN 114681033 B CN114681033 B CN 114681033B
- Authority
- CN
- China
- Prior art keywords
- hole
- connection
- piece
- locking
- spherical groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- 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, e.g. stabilisers comprising fluid filler in an implant
- A61B17/7062—Devices acting on, attached to, or simulating the effect of, vertebral processes, vertebral facets or ribs ; Tools for such devices
- A61B17/7064—Devices acting on, attached to, or simulating the effect of, vertebral facets; Tools therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- 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, e.g. stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7002—Longitudinal elements, e.g. rods
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- 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, e.g. stabilisers comprising fluid filler in an implant
- A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8061—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates specially adapted for particular bones
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/564—Methods for bone or joint treatment
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Neurology (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
本发明涉及一种连接装置及枕颈后路内固定系统。其中连接装置包括连接座、连接件以及锁紧件。其中连接座设有两个容纳孔，并且两个容纳孔的中心线呈夹角设置。连接件可转动地插设在容纳孔内。锁紧件的一端插入容纳孔，锁紧件用于锁紧或放松连接件。上述连接装置避免了连接件弯折，保证了连接件的强度和使用效果，并且连接件的角度调整更简单省力，便于术中操作。
The present invention relates to a connecting device and a posterior occipital-cervical internal fixation system. The connecting device includes a connecting seat, a connecting piece and a locking piece. The connecting seat is provided with two receiving holes, and the center lines of the two receiving holes are arranged at an angle. The connecting piece is rotatably inserted into the receiving hole. One end of the locking piece is inserted into the receiving hole, and the locking piece is used to lock or loosen the connecting piece. The above-mentioned connecting device avoids bending of the connecting piece, ensures the strength and use effect of the connecting piece, and the angle adjustment of the connecting piece is simpler and more labor-saving, which is convenient for intraoperative operation.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a connecting device and a occipital cervical internal fixation system.
Background
With the popularization of computer offices and the increase of serious users of mobile phones, cervical spondylosis patients are increasing, and the daily life, work and life quality of the patients are seriously affected by cervical spondylosis. Surgical operation is one of the currently effective treatments, and in cervical vertebra operation, it is generally required to restore the normal sequence of cervical vertebrae and the curvature, height and mobility of cervical vertebrae through an occipital posterior internal fixation system, thereby maintaining the stability of cervical vertebrae and improving the bone compression nerve function.
The traditional pillow neck back internal fixation system comprises a screw seat, a connecting rod, a compression nut and the like, the connecting rod is fixed on the screw seat by the compression nut, the compression nut not only needs to limit the axial movement of the connecting rod, but also needs to compress the connecting rod in a long U-shaped groove of the screw seat, in order to firmly lock the head end of the connecting rod in the long U-shaped groove as much as possible, the connecting rod needs to be bent at a large angle under the general clinical condition, so that the strength and the using effect of the connecting rod can be damaged, and the connecting rod is difficult to implant in operation due to the physiological curvature of occipital bones and cervical vertebrae.
Disclosure of Invention
Based on this, it is necessary to provide a connecting device and a occipital cervical internal fixation system which are easy to implant and avoid damaging the strength and the use effect of the connecting rod.
A connection device, comprising:
The connecting seat is provided with two containing holes, and the central lines of the two containing holes are arranged at an included angle;
a connecting member rotatably inserted in the receiving hole, and
And one end of the locking piece is inserted into the accommodating hole, and the locking piece is used for locking or loosening the connecting piece.
In one embodiment, the connecting piece comprises a spherical rotating part and a connecting part connected with the rotating part, wherein the rotating part is rotatably arranged in the accommodating hole, and the connecting part extends out of the accommodating hole.
In one embodiment, the connecting seat is further provided with a first spherical groove and a connecting hole, the first spherical groove is communicated with the accommodating hole, the first spherical groove is matched with the outer contour of the rotating part, the first spherical groove is in running fit with the rotating part, the connecting hole is communicated with the first spherical groove and penetrates through the connecting seat, and the connecting part is in clearance fit with the connecting hole.
In one embodiment, a chamfer is provided at one end of the hole wall of the connecting hole away from the first spherical groove.
In one embodiment, the connecting device further comprises a pressing member movably disposed in the receiving hole, the pressing member being engaged with the locking member, the pressing member being configured to selectively lock or unlock the connecting member under the driving of the locking member.
In one embodiment, the connecting device further comprises a pressing piece, the pressing piece is arranged between the connecting piece and the locking piece, a second spherical groove is formed in one side, close to the rotating portion, of the pressing piece, the second spherical groove is matched with the outer contour of the rotating portion, and the locking piece is used for selectively driving the pressing piece to move close to the rotating portion or release the pressing piece, so that the pressing piece locks or releases the connecting piece.
In one of the embodiments, the surface of the rotating part is provided with an anti-slip part for being matched with the second spherical groove, and/or,
The surface of the second spherical groove is provided with an anti-skid part matched with the surface of the rotating part.
In one embodiment, at least part of the locking member is in a conical structure, and a conical surface matched with the conical structure is arranged on one side, close to the locking member, of the pressing member, and the conical surface is used for being in contact with the conical structure.
In one embodiment, the locking member comprises a threaded portion and a guiding portion, the connecting seat is further provided with a threaded hole and a guiding hole which are communicated with the accommodating hole, the center line of the threaded hole coincides with the center line of the guiding hole, the threaded portion is inserted into the threaded hole, and the guiding portion is inserted into the guiding hole.
In one embodiment, the connecting seat is of an integrally formed structure, the two accommodating holes are communicated and penetrate through the connecting seat, or the connecting seat comprises a detachable first part and a detachable second part, the first part and the second part are respectively provided with one accommodating hole, and each accommodating hole is internally provided with the connecting piece, the pressing piece and the locking piece.
In one embodiment, the connecting seat is provided with a side groove communicated with the accommodating hole and a limiting piece used for locking or unlocking the side groove.
An occipital cervical internal fixation system comprises an occipital plate, pedicle screws and the connecting device.
Above-mentioned connecting device and pillow way internal fixation system behind neck is through rotationally setting up the connecting piece in the accommodation hole of connecting seat to through retaining member locking or loosen the connecting piece, thereby when clinical operation, the accessible retaining member is to the connecting piece unblock, the rethread makes the connecting piece rotate around the looks perpendicular direction with the central line of accommodation hole, can adjust the contained angle between two connecting pieces in a certain extent, so that the contained angle between two connecting pieces is adapted to the contained angle requirement between different patient's the occipital bone and the cervical vertebra. After the two connecting pieces are adjusted to an angle matched with the included angle between the occiput and the cervical vertebra, the connecting pieces are locked through the locking pieces, so that the connecting pieces and the connecting seat can be prevented from rotating relatively, and the connecting device is further matched with the included angle requirements between the occiput and the cervical vertebra of different patients. Compared with the traditional connecting rod which is bent at a large angle to adapt to the requirements of the included angle between occipital bone and cervical vertebra, the connecting device provided by the application avoids bending of the connecting piece, ensures the strength and the using effect of the connecting piece, is simpler and more labor-saving in angle adjustment of the connecting piece, and is convenient for operation in operation.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a cross-sectional view of a structure of a connecting device according to an embodiment;
FIG. 2 is a cross-sectional view of the structure of the connector device shown in FIG. 1;
FIG. 3 is a cross-sectional view of the connection base of the connection device shown in FIG. 1;
FIG. 4 is a structural cross-sectional view of the compression element of the connecting device shown in FIG. 1;
fig. 5 is a structural cross-sectional view of a locking member of the coupling device shown in fig. 1.
Reference numerals illustrate:
10. the device comprises a connecting seat, 11, a containing hole, 111, a penetrating hole, 12, a first spherical groove, 13, a connecting hole, 131, a chamfer, 141, a threaded hole, 142, a guiding hole, 20, a connecting piece, 21, a connecting part, 22, a rotating part, 23, an anti-skid part, 30, a pressing part, 31, a second spherical groove, 32, a conical surface, 40, a locking piece, 41, a guiding part, 42, a threaded part, 43, a conical structure, 44 and a driving interface.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.
Referring to fig. 1, fig. 1 shows a cross-sectional view of a connection device in an embodiment of the application. Specifically, an embodiment of the present application provides a connecting device for replacing a connecting rod in a conventional occipital cervical internal fixation system to restore the normal sequence of the cervical vertebrae and the curvature, height and mobility of the cervical vertebrae. Specifically, the connection device of an embodiment includes a connection base 10, a connection member 20, a pressing member 30, and a locking member 40. Wherein the connecting seat 10 is provided with two accommodating holes 11, and the central lines of the two accommodating holes 11 are arranged at an included angle. The connection member 20 is rotatably inserted into the receiving hole 11, and the pressing member 30 is movably disposed in the receiving hole 11. One end of the locking member 40 is inserted into the receiving hole 11 and the locking member 40 is engaged with the pressing member 30, and the locking member 40 serves to drive the pressing member 30 to lock or unlock the coupling member 20.
Preferably, the two receiving holes 11 extend substantially along the extending direction of the connecting seat 10 and are disposed in mirror symmetry with respect to a symmetry plane S. The included angle between the center lines of the two accommodation holes 11 is matched with the included angle between occipital bone and cervical vertebra. In general, the angle between the occiput and the cervical vertebrae is about 100 ° -120 °, and thus, in the present embodiment, the angle between the center lines of the two accommodation holes 11 is in the range of 100 ° -120 °. Further, the connecting piece 20, the pressing piece 30 and the locking piece 40 are in one-to-one correspondence with the accommodating holes 11, that is, each accommodating hole 11 is correspondingly provided with the connecting piece 20, the pressing piece 30 and the locking piece 40.
Preferably, the connecting seat 10 is also mirror symmetrical with respect to the symmetry plane S, and the included angle between the center lines of the two mirror symmetrical parts is also matched with the included angle between occiput and cervical vertebrae, preferably the same included angle as the included angle between the center lines of the two receiving holes 11.
Further, the connector 20 is used to connect pedicle screws or screw seats in occipital-posterior internal fixation systems. In the initial state, the extending direction of the connecting pieces 20 is consistent with the extending direction of the central line of the accommodating hole 11, so that the included angle between the two connecting pieces 20 meets the common included angle requirement between occipital bone and cervical vertebra. When the included angle between the two connecting pieces 20 does not meet the required included angle requirement between occipital bone and cervical vertebra, the connecting pieces 20 are unlocked by the pressing piece 30 through the locking piece 40, and then the included angle between the two connecting pieces 20 can be changed within a certain range by rotating the connecting pieces 20 around the direction perpendicular to the central line of the accommodating hole 11, so that the connecting device is adapted to the included angle requirement between occipital bone and cervical vertebra of different patients.
The connecting device is characterized in that the connecting piece 20 is rotatably arranged in the accommodating hole 11 of the connecting seat 10 and is matched with the pressing piece 30 through the locking piece 40, so that the pressing piece 30 can be driven to unlock the connecting piece 20 through the locking piece 40 in clinical operation, and the connecting piece 20 can be rotated around an axis perpendicular to the central line of the accommodating hole 11, so that the included angle between the two connecting pieces 20 can be adjusted within a certain range, and the included angle between the two connecting pieces 20 can be adapted to the included angle requirements between occiput and cervical vertebrae of different patients. After the two connecting pieces 20 are adjusted to the angle matched with the included angle between the occiput and the cervical vertebra, the pressing piece 30 is driven to lock the connecting pieces 20 through the locking piece 40, so that the connecting pieces 20 can be prevented from rotating relative to the connecting seat 10, and the connecting device is further matched with the included angle requirements between the occiput and the cervical vertebra of different patients. Compared with the traditional connecting rod which is bent at a large angle to adapt to the requirements of the included angle between occipital bone and cervical vertebra, the connecting device provided by the application avoids bending of the connecting piece 20, ensures the strength and the use effect of the connecting piece 20, and is simpler and more labor-saving in angle adjustment of the connecting piece 20, thereby being convenient for operation in operation.
Further, referring to fig. 2 to 3, the connection member 20 includes a ball-type rotation portion 22 and a connection portion 21 connected to the rod-type connection portion 21, the connection portion 21 being connected to the rotation portion 22, the rotation portion 22 being rotatably disposed in the receiving hole 11, the connection portion 21 extending out of the receiving hole 11. Further, the connection base 10 is further provided with a first spherical groove 12 and a connection hole 13, the first spherical groove 12 is communicated with the accommodating hole 11, the first spherical groove 12 is matched with the outer contour of the rotating portion 22, the first spherical groove 12 is in running fit with the rotating portion 22, and the connection piece 20 and the connection base 10 can form a spherical connection pair through the matching of the first spherical groove 12 and the spherical rotating portion 22, so that the connection piece 20 can freely rotate around the center of the rotating portion 22 to change the angle of the connection piece. Further, the connecting hole 13 is communicated with the first spherical groove 12 and penetrates through the connecting seat 10, and the connecting part 21 is in clearance fit with the connecting hole 13, so that the connecting piece 20 can rotate freely. Further, the connecting hole 13 is a cylindrical hole, and since the rotation range of the connecting member 20 is related to the gap between the connecting member and the wall of the connecting hole 13, the larger the diameter of the connecting hole 13 is, the larger the rotation range of the connecting member 20 is. However, the larger the diameter of the connection hole 13 is, the more easily the rotating portion 22 of the connection member 20 is separated from the receiving hole 11, and thus the diameter of the connection hole 13 is larger than that of the connection portion 21 but smaller than that of the rotating portion 22.
Further, referring to fig. 3, the hole wall of the end of the connection hole 13 remote from the first spherical groove 12 is provided with a chamfer 131, and the chamfer 131 is used to define the rotation range of the connection member 20. Specifically, by providing the chamfer 131 on the hole wall of the end of the connecting hole 13 away from the first spherical groove 12, the rotation range of the connecting piece 20 is enlarged, and the overlarge diameter of the connecting hole 13 is effectively avoided, so that the rotating part 22 of the connecting piece 20 is prevented from falling out of the accommodating hole 11. Preferably, in the present embodiment, the angle between the centerlines of the two receiving holes 11 is 110 °, and the chamfer 131 ranges from C0.5 to C1.5, such that the angle between the two connectors 20 can be adjusted between 100 ° -120 °.
Further, referring to fig. 1 and 4, the pressing member 30 is disposed between the connecting member 20 and the locking member 40, a second spherical groove 31 is disposed on a side of the pressing member 30 adjacent to the rotating portion 22, the second spherical groove 31 is matched with an outer contour of the rotating portion 22, the locking member 40 is used for driving the pressing member 30 to move close to or away from the rotating portion 22, so that the pressing member 30 locks or unlocks the connecting member 20, the second spherical groove 31 with a spherical section is matched with the spherical rotating portion 22, when the locking member 40 drives the pressing member 30 to move close to the rotating portion 22, a groove wall of the second spherical groove 31 abuts against the rotating portion 22 and is pressed, and a friction force between the groove wall of the second spherical groove 31 and the rotating portion 22 is used for limiting rotation of the rotating portion 22, so as to lock the connecting member 20. When the locking member 40 releases the pressing member 30, the rotating portion 22 is no longer subjected to friction force of the groove wall of the second spherical groove 31, so that the connecting member 20 can rotate freely.
Further, referring to fig. 2, the surface of the rotating portion 22 is provided with an anti-slip portion 23 for cooperating with the second spherical groove 31, and the anti-slip portion 23 is used for increasing friction between the rotating portion 22 and the pressing member 30, so as to ensure that the rotating portion 22 cannot rotate arbitrarily when the groove wall of the second spherical groove 31 abuts against the rotating portion 22. Preferably, the anti-slip portion 23 is a plurality of grooves or protrusions provided on the rotating portion 22. In another embodiment, the anti-slip part 23 may be an anti-slip material disposed on the surface of the rotating part 22, for example, the anti-slip material may be EVA, rubber or silica gel. Further, the groove wall of the second spherical groove 31 may also be provided with the anti-slip portion 23, thereby further improving the friction force between the rotating portion 22 and the pressing member 30.
Further, referring to fig. 4 and 5, at least part of the locking member 40 is formed in a tapered structure 43, one side of the pressing member 30 adjacent to the locking member 40 is provided with a tapered surface 32 matching the tapered structure 43, the tapered surface 32 is in contact with the tapered structure 43, specifically, the tapered surface 32 includes a large end and a small end, the locking member 40 is driven to be inserted into the accommodating hole 11 along a direction perpendicular to a center line of the accommodating hole 11, and is moved from the large end of the tapered surface 32 to the small end of the tapered surface 32, and the tapered structure 43 contacts the tapered surface 32, so that the pressing member 30 is forced to move towards a direction approaching the rotating part 22 during the movement of the locking member 40, finally, the pressing member 30 is locked to the rotating part 22, and conversely, the pressing member 30 is released from the small end of the tapered surface 32 by driving the locking member 40 to the large end of the tapered surface 32, thereby releasing the rotating part 22. Preferably, the angle of inclination of the cone structure 43 and the cone surface 32 is 30 ° -50 °, in which range the cone structure 43 and the pressing member 30 do not form self-locking due to static friction between materials and can perform better locking effect.
Further, referring to fig. 3 and 5, the locking member 40 includes a screw portion 42 and a guide portion 41, the coupling seat 10 is further provided with a screw hole 141 and a guide hole 142 penetrating the receiving hole 11, and the center line of the screw hole 141 coincides with the center line of the guide hole 142, and the screw portion 42 is inserted into the screw hole 141, thereby locking or releasing the coupling member 20 by rotating the locking member 40 in different directions. The guide portion 41 is inserted into the guide hole 142, preferably, the guide portion 41 is a cylinder, the guide hole 142 is a cylindrical hole, and the guide portion 41 is matched with the guide hole 142, so that the movement of the locking member 40 is positioned and guided, the locking member 40 can only move along the central line direction of the guide hole 142, the problem that the locking member 40 is offset due to the reaction force of the pressing member 30 in the process of locking the pressing member 30 is avoided, and the locking member 40 is ensured to drive the pressing member 30 to move close to the rotating portion 22 in the locking process. Further, the taper structure 43 is provided on the lower half of the screw portion 42, and the upper half of the screw portion 42 is a cylindrical structure.
Further, referring to fig. 5, one end of retaining member 40 is also provided with a drive interface 44 for mating with a drive device. The driving interface 44 may be a straight type, a cross type, a square type, a hexagonal type, a plum blossom type, etc., without limitation. The locking member 40 can be quickly and labor-saving screwed or unscrewed by the cooperation of the drive interface 44 and the drive device, thereby reducing the intraoperative implantation difficulty of the connecting device.
In this embodiment, the locking member 40 is inserted into the receiving hole 11 in a direction perpendicular to the center line of the receiving hole 11, and in other embodiments, the locking member 40 may be inserted into the receiving hole 11 at any angle with respect to the center line of the receiving hole 11, for example, obliquely inserted into the receiving hole 11, or parallel inserted into the receiving hole 11. The parallel insertion is performed without opening the screw hole 141 and the guide hole 142 in the connection base 10, and the parallel insertion is performed directly along the receiving hole 11. The pressing member 30 may be omitted when inserted in parallel, and the end of the locking member 40 may be directly abutted against the rotating portion 22 to lock the angle between the two connecting members 20.
Further, referring to fig. 1, in the present embodiment, the connection base 10 is of an integrally formed structure, and two receiving holes 11 are communicated and penetrate through the connection base 10, specifically, the receiving holes 11 include a through hole 111 penetrating through the connection base 10, and the connection member 20 and the pressing member 30 can be placed into the receiving holes 11 through the through hole 111, thus facilitating installation of the connection device.
Of course, in other embodiments, the connection base 10 may be made as a split type, that is, the connection base 10 includes a detachable first portion and a detachable second portion, where the first portion and the second portion are respectively provided with a through receiving hole 11, and each receiving hole 11 is provided with a connecting piece 20, a pressing piece 30 and a locking piece 40, so that before installation, the connecting piece 20, the pressing piece 30 and the locking piece 40 are installed in each receiving hole 11, and then the first portion and the second portion are combined, so that convenient installation of the connection device can be also realized.
In addition, in other embodiments, the connecting seat 10 is provided with a side groove communicating with the accommodating hole 11 and a limiting member for locking or unlocking the side groove, so that the connecting member 20 and the pressing member 30 can be placed into the accommodating hole 11 through the side groove, and then the side groove is locked through the limiting member, thereby preventing the connecting member 20 and the pressing member 30 from being separated from the side groove, and thus, convenient installation of the connecting device can be realized.
Further, in one embodiment, the application also provides a occipital posterior internal fixation system. The occipital posterior internal fixation system comprises an occipital plate, pedicle screws and the connecting device of any of the embodiments, wherein the connecting piece 20 of the connecting device is connected with the pedicle screws in the occipital posterior internal fixation system for restoring the normal sequence of the cervical vertebrae and the curvature, height and mobility of the cervical vertebrae.
The above-mentioned pillow neck back way internal fixation system is through rotationally setting up connecting piece 20 in holding hole 11 of connecting seat 10 to through retaining member 40 and casting die 30 cooperation, make connecting piece 20 by locking or loosen, thereby during clinical operation, accessible retaining member 40 orders about casting die 30 to the unblock of connecting piece 20, the rethread makes connecting piece 20 rotate around the axis that is perpendicular with the central line of holding hole 11, can adjust the contained angle between two connecting pieces 20 in certain limit, so that the contained angle between two connecting pieces 20 is adapted to the contained angle requirement between different patient's occipital bone and the cervical vertebra. After the two connecting pieces 20 are adjusted to the angle matched with the included angle between the occiput and the cervical vertebra, the pressing piece 30 is driven to lock the connecting pieces 20 through the locking piece 40, so that the connecting pieces 20 and the connecting seat 10 can be prevented from rotating relatively, and the connecting device is further matched with the included angle requirements between the occiput and the cervical vertebra of different patients. Compared with the traditional connecting rod which is bent at a large angle to adapt to the requirements of the included angle between the occipital plate and the cervical vertebra, the connecting device provided by the application avoids bending of the connecting piece 20, ensures the strength and the use effect of the connecting piece 20, and is simpler and more labor-saving in angle adjustment of the connecting piece 20, thereby being convenient for operation in operation.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected through an intervening medium, or in communication between two elements or in an interaction relationship between two elements, unless otherwise explicitly specified. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on 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," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Claims (10)
1. A connection device for replacing a connection rod in a occipital posterior internal fixation system, the connection device comprising:
The connecting seat is provided with two containing holes, the two containing holes are respectively arranged at two opposite ends of the connecting seat, and the central lines of the two containing holes are arranged at an included angle;
two connecting pieces which are inserted in the two containing holes in a one-to-one correspondence manner and can rotate relative to the connecting seat so as to adjust the included angle between the two connecting pieces, and
The two locking pieces are inserted into the accommodating holes in a one-to-one correspondence manner and are used for locking or loosening the corresponding connecting pieces;
The connecting piece comprises a spherical rotating part and a connecting part connected with the rotating part, wherein the rotating part is rotatably arranged in the accommodating hole, the connecting part extends out of the accommodating hole, the connecting device further comprises a pressing piece which is movably arranged in the accommodating hole, the pressing piece is matched with the locking piece, and the pressing piece is used for selectively locking or loosening the connecting piece under the driving of the locking piece.
2. The connection device according to claim 1, wherein the connection base is further provided with a first spherical groove and a connection hole, the first spherical groove is communicated with the accommodation hole, the first spherical groove is matched with the outer contour of the rotating portion, the first spherical groove is in rotating fit with the rotating portion, the connection hole is communicated with the first spherical groove and penetrates the connection base, and the connection portion is in clearance fit with the connection hole.
3. The connection device according to claim 2, wherein the wall of the connection hole at the end remote from the first spherical groove is provided with a chamfer.
4. The connection device according to claim 1, wherein the pressing member is disposed between the connection member and the locking member, a second spherical groove is disposed on a side of the pressing member adjacent to the rotating portion, the second spherical groove matches with an outer contour of the rotating portion, and the locking member is configured to selectively drive the pressing member to move adjacent to the rotating portion or release the pressing member, so that the pressing member locks or unlocks the connection member.
5. The connecting device according to claim 4, wherein the surface of the rotating part is provided with an anti-slip part for cooperation with the second spherical groove, and/or,
The surface of the second spherical groove is provided with an anti-skid part matched with the surface of the rotating part.
6. The connection device according to claim 4 or 5, wherein at least part of the locking member has a tapered configuration, and a tapered surface matching the tapered configuration is provided on a side of the pressing member adjacent to the locking member, the tapered surface being adapted to contact the tapered configuration.
7. The connecting device according to claim 6, wherein the locking member includes a screw portion and a guide portion, the connecting seat is further provided with a screw hole and a guide hole communicating with the accommodating hole, and a center line of the screw hole coincides with a center line of the guide hole, the screw portion is inserted into the screw hole, and the guide portion is inserted into the guide hole.
8. The connector of claim 4 or 5, wherein the connector is of an integrally formed structure, and the two receiving holes are communicated and penetrate through the connector, or the connector comprises a detachable first portion and a detachable second portion, wherein each of the first portion and the second portion is provided with one receiving hole, and each receiving hole is internally provided with the connecting piece, the pressing piece and the locking piece.
9. A connection device according to claim 4 or 5, wherein the connection seat is provided with a side groove communicating with the receiving hole and a stopper for locking or unlocking the side groove.
10. An occipital posterior internal fixation system comprising an occipital plate, pedicle screws and a connecting device according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011593030.XA CN114681033B (en) | 2020-12-29 | 2020-12-29 | Connecting device and posterior occipital-cervical fixation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011593030.XA CN114681033B (en) | 2020-12-29 | 2020-12-29 | Connecting device and posterior occipital-cervical fixation system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114681033A CN114681033A (en) | 2022-07-01 |
| CN114681033B true CN114681033B (en) | 2025-07-01 |
Family
ID=82131457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011593030.XA Active CN114681033B (en) | 2020-12-29 | 2020-12-29 | Connecting device and posterior occipital-cervical fixation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114681033B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102215764A (en) * | 2008-11-17 | 2011-10-12 | 华沙整形外科股份有限公司 | Translational occipital vertebral fixation system |
| CN211156174U (en) * | 2019-09-16 | 2020-08-04 | 北京市春立正达医疗器械股份有限公司 | Transverse connecting device and spinal internal fixing system applying same |
| CN215079485U (en) * | 2020-12-29 | 2021-12-10 | 苏州微创脊柱创伤医疗科技有限公司 | Connecting device and occipital posterior internal fixation system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204219010U (en) * | 2014-11-24 | 2015-03-25 | 江苏金鹿集团医疗器械有限公司 | A kind of posterior cervical vertebra canal fixing system |
| CN109431588A (en) * | 2018-12-20 | 2019-03-08 | 北京爱康宜诚医疗器材有限公司 | Pillow neck fixation device |
-
2020
- 2020-12-29 CN CN202011593030.XA patent/CN114681033B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102215764A (en) * | 2008-11-17 | 2011-10-12 | 华沙整形外科股份有限公司 | Translational occipital vertebral fixation system |
| CN211156174U (en) * | 2019-09-16 | 2020-08-04 | 北京市春立正达医疗器械股份有限公司 | Transverse connecting device and spinal internal fixing system applying same |
| CN215079485U (en) * | 2020-12-29 | 2021-12-10 | 苏州微创脊柱创伤医疗科技有限公司 | Connecting device and occipital posterior internal fixation system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114681033A (en) | 2022-07-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11432850B2 (en) | Polyaxial bone anchors with increased angulation | |
| US10448975B2 (en) | Multi-axial spinal fixation system | |
| EP1761181B1 (en) | Spinal fixation device with internal drive structure | |
| JP5078900B2 (en) | System for stabilizing bone parts | |
| US9545279B2 (en) | Multi-axial spinal fixation system | |
| US8012186B2 (en) | Uniplanar screw | |
| US11096723B2 (en) | Uniplanar screw | |
| CN215018750U (en) | Transverse connector and spinal internal fixing system | |
| CN109431588A (en) | Pillow neck fixation device | |
| CN215079485U (en) | Connecting device and occipital posterior internal fixation system | |
| CN114681033B (en) | Connecting device and posterior occipital-cervical fixation system | |
| CN211213466U (en) | Nail feeding device | |
| CN107095713B (en) | A fixation system for the spine | |
| CN221105991U (en) | Connector and vertebral body fixation system | |
| CN113768603A (en) | Universal pedicle screw fixation device and its installation tool | |
| CN110772310B (en) | Nailing device and working method thereof | |
| CN111568520A (en) | Occipital plate system | |
| CN217186373U (en) | Transverse connector | |
| US11596450B2 (en) | Low-profile offset-type spinal fusion device | |
| CN114681031A (en) | Transverse connector and spinal internal fixing system | |
| CN211633749U (en) | Double-end interspinous fusion system | |
| CN119949994A (en) | A universal pedicle screw fixation system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |