CN113397680A

CN113397680A - Universal connection assembly

Info

Publication number: CN113397680A
Application number: CN202110743226.0A
Authority: CN
Inventors: 陶惠人; 刘明岩; 张振峰; 马宇立
Original assignee: Shanghai Sanyou Medical Co ltd
Current assignee: Shanghai Sanyou Medical Co ltd
Priority date: 2021-07-01
Filing date: 2021-07-01
Publication date: 2021-09-17

Abstract

The invention provides a universal connection assembly, comprising: the device comprises a movable rod, a fixed rod, a pressing piece and a blocking piece; one end of the movable rod is provided with a ball head; one end of the fixed rod is provided with a supporting part, and the supporting part is provided with a ball socket for placing the ball head; the end of the supporting part, which is far away from the fixed rod, is a movable connecting end, the opening of the ball socket is positioned on the movable connecting end of the supporting part, and a clamping groove for the blocking part to be clamped is arranged on the inner side surface of the movable connecting end of the supporting part; the supporting component is also provided with a mounting hole communicated with the ball socket, and the mounting hole is provided with a mounting part; the pressing piece is provided with a bearing part, the bearing part is detachably connected with the installation part, and the pressing piece can move along the axial direction of the installation hole. The universal connecting component can conveniently carry out vertebral orthopedic operation, shortens the operation time and effectively avoids the problem of the reduction of the fatigue resistance of the connecting rod in the prior art.

Description

Universal connection assembly

Technical Field

The invention relates to the technical field of medical instruments, in particular to a universal connecting assembly.

Background

Scoliosis is a complex three-dimensional spatial deformity of the spine, lateral curvature in the coronal plane, rotation of the spine and thoracic cage in the horizontal plane, and a change in the physiological curvature of the spine in the sagittal plane, i.e., an increase or decrease in the posterior or anterior processes. In general, when the nail rod internal fixing system is used for scoliosis correction, an operator repeatedly folds the connecting rod to achieve an ideal physiological curvature in an operation, so that the operation time is inevitably prolonged, and the fatigue resistance of the connecting rod is reduced, and therefore, the prior art needs to be improved.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, the present invention solves the technical problem of providing a universal joint assembly.

To achieve the above and other related objects, the present invention provides a universal joint assembly, including: the device comprises a movable rod, a fixed rod, a pressing piece and a blocking piece;

one end of the movable rod is provided with a ball head;

one end of the fixed rod is provided with a supporting part, and the supporting part is provided with a ball socket for placing the ball head; the end of the supporting part, which is far away from the fixed rod, is a movable connecting end, the opening of the ball socket is positioned on the movable connecting end of the supporting part, and a clamping groove for the blocking part to be clamped is arranged on the inner side surface of the movable connecting end of the supporting part; the supporting component is also provided with a mounting hole communicated with the ball socket, and the mounting hole is provided with a mounting part;

the pressing piece is provided with a bearing part, the bearing part is detachably connected with the installation part, and the pressing piece can move along the axial direction of the installation hole.

Preferably, one end face of the pressing piece is a pressing face, and the pressing face is an inwardly concave curved face.

Preferably, the clamping groove is arranged along the circumferential direction of the inner side surface of the movable connecting end.

Preferably, the barrier is a C-ring.

Preferably, an axial direction of an opening of the ball socket is perpendicular to an axial direction of the mounting hole.

Preferably, the mounting portion is an internal thread provided on the mounting hole, and the receiving portion is an external thread provided on the pressing member.

As described above, the universal connection assembly of the present invention has the following beneficial effects:

when the universal connecting component is used, the pedicle screws are connected with the screw seats, and after the pedicle screws are respectively driven into two centrums, the universal connecting component is installed, namely a movable rod and a fixed rod of the universal connecting component are inserted into the two screw seats, and the movable rod and the fixed rod are fixedly connected with the corresponding pedicle screws through the fixed screw plugs; before spinal column correction, loosening a pressing piece on the universal connecting component, and then performing correction operation on a corresponding vertebral body; after the vertebral body is shaped to the correction position, the pressing piece is connected with the mounting hole and presses the ball head, and the vertebral body shaping operation is completed; the universal connecting component can conveniently carry out centrum orthopedic operation, shorten the operation time and effectively avoid the problem of the reduction of the fatigue resistance of the connecting rod in the prior art.

Drawings

Fig. 1 is a schematic perspective view of the universal connection assembly of this embodiment.

Fig. 2 is an exploded schematic view of the universal connecting assembly of the present embodiment.

Fig. 3 is a schematic cross-sectional view of fig. 1.

Fig. 4 is a schematic perspective view illustrating a three-dimensional structure of the universal connection assembly according to the present embodiment when the fixing rod is connected to the supporting member and the pressing member is mounted on the supporting member.

Fig. 5 is a schematic cross-sectional view illustrating a fixing rod of the universal connecting assembly of this embodiment connected to a supporting member, and a pressing member mounted on the supporting member.

Fig. 6 is a schematic cross-sectional view illustrating a connection between a fixing rod and a supporting member of the gimbal assembly according to this embodiment.

Fig. 7 is a schematic perspective view of a pressing member of the universal connection assembly of this embodiment.

Fig. 8 is a perspective view of the universal joint assembly of the present embodiment, showing the movable rod and the fixed rod inserted into two screw seats before spinal correction.

Fig. 9 is a perspective view of the universal connecting component of the embodiment, after spinal column correction, the movable rod and the fixed rod are inserted into two screw seats.

Description of the reference numerals

100 movable rod

110 ball head

200 fixed rod

210 support member

211 ball socket

212 opening (212)

213 Movable connecting end

214 card slot

220 mounting hole

221 mounting part

300 compressing member

310 receiving part

320 pressing surface

400 barrier

20 screw base

30 vertebral body

40 fixed screw plug

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

Please refer to the attached drawings. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

As shown in fig. 1 to 9, the universal connecting assembly of the present embodiment, which is used for correcting the posterior spinal deformity, includes: the movable rod 100, the fixed rod 200, the pressing member 300, and the blocking member 400;

one end of the movable rod 100 is provided with a ball head 110;

one end of the fixing rod 200 is provided with a supporting part 210, and the supporting part 210 is provided with a ball socket 211 for placing the ball head 110; one end of the supporting part 210 far away from the fixed rod 200 is a movable connecting end 213, an opening 212 of the ball socket 211 is positioned on the movable connecting end 213 of the supporting part 210, and a clamping groove 214 for clamping the blocking piece 400 is arranged on the inner side surface of the movable connecting end 213 of the supporting part 210; the supporting component 210 is also provided with a mounting hole 220 communicated with the ball socket 211, and the mounting hole 220 is provided with a mounting part 221;

the pressing member 300 is provided with a receiving portion 310, the receiving portion 310 is detachably connected to the mounting portion 221, and the pressing member 300 is movable along the axial direction of the mounting hole 220.

When the universal connecting component is used, the position of a vertebral body 30 with scoliosis is determined, tissue exposure is completed, the pedicle screws 10 are connected with the screw seats 20, after the pedicle screws 10 are respectively driven into the two vertebral bodies 30, the universal connecting component is installed, namely, the movable rod 100 and the fixed rod 200 of the universal connecting component are inserted into the two screw seats 20, and the movable rod 100 and the fixed rod 200 are fixedly connected with the corresponding pedicle screws 10 through the fixed screw plugs 40; before spinal column correction, the pressing piece 300 on the universal connecting component is loosened, and then correction operation is carried out on the corresponding vertebral body 30; after the vertebral body 30 is straightened to the correction position, the pressing member 300 is connected with the mounting hole 220, and the pressing member 300 presses the ball 110, thereby completing the orthopedic operation of the vertebral body 30. And then performing subsequent operation steps such as incision suturing and the like.

The stopper 400 restrains the ball head 110 of the movable bar 100 in the socket 211 of the stationary bar 200, preventing the ball head 110 from being separated from the socket 211 when rotating. The pressing member 300 can move along the axial direction of the mounting hole 220 to a position where it presses the ball 110. The ball socket 211 is for receiving the ball head 110 of the movable bar 100.

Because the ball head 110 is arranged at one end of the movable rod 100 of the universal connecting component, the movable rod 100 can swing in any direction relative to the axial direction of the fixed rod 200, and the movable rod 100 can also rotate around the axial direction of the movable rod.

One end surface of the pressing member 300 is a pressing surface 320, and the pressing surface 320 is an inwardly recessed curved surface. The pressing surface 320 is matched with the ball head 110 of the movable rod 100, so that the contact area is increased, and the movable rod 100 can be locked conveniently. In this embodiment, the radius of curvature of the compressing surface 320 is equal to the radius of curvature of the ball head 110.

The mounting portion 221 is an internal thread provided on the mounting hole 220, and the receiving portion 310 is an external thread provided on the pressing member 300. The internal thread and the external thread form a threaded connection structure, so that the pressing member 300 presses the ball head 110 of the movable rod 100 conveniently. The arrangement of the pressing surface 320 can realize that the ball head 110 of the movable rod 100 can be locked at any position by screwing the pressing piece 300, so that the movable rod 100 and the fixed rod 200 are relatively fixed, and the effect of universal locking is realized. In this embodiment, the pressing member 300 is a lock plug.

The engaging groove 214 is provided along the circumferential direction of the inner side surface of the movable connecting end 213. This configuration facilitates the capture of the blocking member 400 into the card slot 214.

Stop 400 is a C-ring to facilitate installation of stop 400 into card slot 214.

The axial direction of the opening 212 of the socket 211 is perpendicular to the axial direction of the mounting hole 220. This structure facilitates the pressing member 300 to press the ball 110. The opening 212 of the socket 211 is circular, rectangular, or the like, and in the present embodiment, the opening 212 of the socket 211 is circular.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. A universal connection assembly, comprising: the device comprises a movable rod (100), a fixed rod (200), a pressing piece (300) and a blocking piece (400);

one end of the movable rod (100) is provided with a ball head (110);

one end of the fixed rod (200) is provided with a supporting part (210), and a ball socket (211) for placing the ball head (110) is arranged on the supporting part (210); one end of the supporting component (210) far away from the fixed rod (200) is a movable connecting end (213), an opening (212) of the ball socket (211) is positioned on the movable connecting end (213) of the supporting component (210), and a clamping groove (214) for the blocking piece (400) to be clamped is arranged on the inner side surface of the movable connecting end (213) of the supporting component (210); the supporting component (210) is also provided with an installation hole (220) communicated with the ball socket (211), and the installation hole (220) is provided with an installation part (221);

the pressing piece (300) is provided with a bearing part (310), the bearing part (310) is detachably connected with the mounting part (221), and the pressing piece (300) can move along the axial direction of the mounting hole (220).

2. The gimbal assembly of claim 1, wherein: one end face of the pressing piece (300) is a pressing face (320), and the pressing face (320) is an inwards-concave curved face.

3. The gimbal assembly of claim 1, wherein: the clamping groove (214) is arranged along the circumferential direction of the inner side face of the movable connecting end (213).

4. The gimbal assembly of claim 1, wherein: the stop (400) is a C-ring.

5. The gimbal assembly of claim 1, wherein: the axial direction of the opening (212) of the ball socket (211) is perpendicular to the axial direction of the mounting hole (220).

6. The gimbal assembly of claim 1, wherein: the mounting portion (221) is an internal thread arranged on the mounting hole (220), and the bearing portion (310) is an external thread arranged on the pressing piece (300).