Trans-pedicle centrum bone grafting device

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a transpedicular vertebral body bone grafting device which comprises a mounting assembly. Comprising a mounting frame, jackets arranged on the two sides of the bottom of the mounting frame, threaded sleeves arranged on one sides of the jackets, threaded rods arranged in inner cavities of the threaded sleeves, hand wheels arranged at one ends of the threaded rods, fixed clamping plates arranged at the other ends of the threaded rods and sliding grooves formed in the top of the mounting frame. An adjusting assembly, comprising a sliding seat which is arranged in an inner cavity of a sliding groove and slides left and right along the sliding groove, a fixing pin arranged on one side of the sliding seat, a connecting rod arranged on one side of the sliding seat, hinge frames arranged on one side of the connecting rod, a hinge shaft arranged between the hinge frames, a self-locking motor arranged on one side of the hinge frames, and a turnover seat arranged on the surface of the hinge shaft, wherein the output end of the self-locking motor is connected with the hinge shaft. The bone grafting device is reasonable in structure, convenient to adjust, assemble and disassemble in the using process, high in flexibility, high in safety and beneficial to improving the success rate of an operation, and meanwhile the position and the angle of the bone grafting device are convenient to adjust.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, in particular to a transpedicular vertebral bone implant. Background Art

[0002] The thoracolumbar vertebrae (T8 to L5) are prone to compression fractures. Following a vertebral compression fracture, the following changes occur: 1. Broken bone fragments compress the spinal canal, potentially causing spinal cord compression and limb paralysis; 2. Loss of vertebral height and vertebral instability; 3. Compressed vertebral cancellous bone into clumps, with large amounts of bone pulp lost from the fracture gap. In recent years, transpedicular fixation devices have been widely used to treat thoracolumbar vertebral compression fractures, achieving excellent results such as vertebral height restoration and secure fixation. However, because the cancellous bone is compressed into clumps and the bone pulp is lost, while the vertebral cortical bone is restored, cavities remain within the vertebral body, resulting in slow fracture healing. After fracture healing, the load-bearing capacity decreases, and vertebral height is lost again after the patient gets out of bed and bears weight. This further loss of vertebral height leads to loosening of the internal fixation system, vertebral instability, and further compression of the spinal canal. To solve these problems, some hospitals use intravertebral perfusion of self-curing calcium phosphate bone cement for treatment. Although it has a certain effect, self-curing calcium phosphate bone cement will form a permanent foreign body in the body. As people age, their bones also change, and self-curing calcium phosphate bone cement will cause friction between bones, causing pain and even infection.

[0003] Recently, some people have proposed that transpedicular vertebral bone grafting can be used to treat thoracolumbar vertebral compression fractures. The transpedicular vertebral bone grafting device currently used in various hospitals has a smooth outer tube, which is easy to shift after being inserted into the spine during surgery, affecting the smooth progress of the operation. Therefore, we propose a transpedicular vertebral bone grafting device. Summary of the Invention

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of this application to avoid blurring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions should not be used to limit the scope of the present invention.

[0005] In view of the problems existing in the existing technology, the present invention is proposed.

[0006] Therefore, the purpose of the present invention is to provide a transpedicular vertebral bone graft, which is easy to adjust, install and disassemble during use, has high flexibility, and is easy to adjust the position and angle of the bone graft, has high safety, and helps to improve the success rate of the operation.

[0007] To solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0008] A transpedicular vertebral bone implant comprising:

[0009] The mounting assembly includes a mounting frame, a jacket disposed on both sides of the bottom of the mounting frame, a threaded sleeve disposed on one side of the jacket, a threaded rod disposed in the inner cavity of the threaded sleeve, a handwheel disposed at one end of the threaded rod, a fixed clamping plate disposed at the other end of the threaded rod, and a slide groove disposed on the top of the mounting frame;

[0010] The adjustment assembly includes a slide seat provided in the inner cavity of the slide slot and sliding left and right along the slide slot, a fixing pin provided on one side of the slide seat, a connecting rod provided on one side of the slide seat, an articulated frame provided on one side of the connecting rod, an articulated shaft provided between the articulated frames, a self-locking motor provided on one side of the articulated frame and having an output end connected to the articulated shaft, and a flip seat provided on the surface of the articulated shaft;

[0011] The bone grafting assembly comprises a guide sleeve arranged on a turning seat, a bone grafting needle arranged in an inner cavity of the guide sleeve, a handle arranged on the top of the bone grafting needle, and a bone grafting needle head arranged at the bottom of the bone grafting needle.

[0012] As a preferred solution of the transpedicular vertebral bone implant described in the present invention, the surface of the handwheel is provided with a rotating handle, and the surface of the rotating handle is provided with a rubber anti-slip sleeve.

[0013] As a preferred solution of the transpedicular vertebral bone implant described in the present invention, the fixing splint is arranged in a circular shape, and a rubber gasket is provided on the surface of the fixing splint.

[0014] As a preferred solution of the transpedicular vertebral bone implant described in the present invention, the fixing splint is connected to one end of the threaded rod via a rotating sleeve.

[0015] As a preferred solution of the transpedicular vertebral bone implant of the present invention, the top edge of the mounting plate is provided with scale lines.

[0016] As a preferred solution of the transpedicular vertebral bone implant described in the present invention, fixing pin holes are provided on a side of the mounting frame close to the fixing pin, and the fixing pin holes are evenly distributed in a straight line.

[0017] As a preferred solution of the transpedicular vertebral bone implant described in the present invention, the flip seat is provided with a mounting hole that matches the guide sleeve.

[0018] As a preferred solution of the transpedicular vertebral bone implant of the present invention, the surface of the guide sleeve is provided with scale lines.

[0019] As a preferred solution of the transpedicular vertebral bone implant described in the present invention, the inner side wall of the guide sleeve is provided with an internal thread, and the surface of the bone implant rod is provided with a matching external thread.

[0020] As a preferred solution of the transpedicular vertebral bone implant of the present invention, the surface of the handle is provided with an anti-slip sleeve.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. By arranging a jacket on both sides of the bottom of the mounting frame, a threaded sleeve is arranged on one side of the jacket, a threaded rod is arranged in the inner cavity of the threaded sleeve, a hand wheel is arranged at one end of the threaded rod, and a fixed splint is arranged at the other end of the threaded rod. By rotating the threaded rod by the hand wheel, the fixed splint is driven to move relative to each other, thereby achieving rapid clamping and fixing, convenient installation and disassembly, and high flexibility;

[0023] 2. The position of the slide seat in the slide groove is fixed by a fixing pin, which facilitates the adjustment of the position of the bone graft puncture. The angle of the bone graft puncture is conveniently adjusted through the cooperation of the articulated frame, the articulated shaft, the self-locking motor and the flip seat. The guide sleeve is used to limit the bone graft needle rod and the active trajectory, thereby fixing the puncture angle of the bone graft needle head, preventing position deviation during the bone graft puncture process, and helping to improve the success rate of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive work. Among them:

[0025] Figure 1 It is a schematic diagram of the structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the installation assembly structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of the regulating component of the present invention;

[0028] Figure 4 Schematic diagram of the structure of the bone graft assembly of the present invention.

[0029] In the figure; 100 mounting assembly, 110 mounting frame, 120 sleeve, 130 threaded sleeve, 140 threaded rod, 150 handwheel, 160 fixed splint, 170 slide, 200 adjustment assembly, 210 slide, 220 connecting rod, 230 articulated frame, 240 articulated shaft, 250 self-locking motor, 260 flip seat, 270 fixing pin, 300 bone grafting assembly, 310 guide sleeve, 320 bone grafting needle, 330 handle, 340 bone grafting needle. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Next, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, cross-sectional views of device structures may be partially enlarged and not to scale when describing the embodiments of the present invention. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0033] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0034] The present invention provides the following technical solutions: a transpedicular vertebral bone graft, which is easy to adjust, install and disassemble during use, has high flexibility, and is easy to adjust the position and angle of the bone graft, has high safety, and helps to improve the success rate of the operation;

[0035] Figures 1 to 4 FIG2 shows a schematic structural diagram of a transpedicular vertebral bone grafting device according to an embodiment of the present invention, wherein the main body thereof includes a mounting assembly 100, an adjustment assembly 200 and a bone grafting assembly 300;

[0036] The mounting assembly 100 includes a mounting frame 110, a jacket 120 mounted on both sides of the bottom of the mounting frame 110, a threaded sleeve 130 mounted on one side of the jacket 120, a threaded rod 140 mounted in the inner cavity of the threaded sleeve 130, a handwheel 150 mounted at one end of the threaded rod 140, a fixed splint 160 mounted at the other end of the threaded rod 140, and a slide groove 170 mounted on the top of the mounting frame 110. A rotating handle is mounted on the surface of the handwheel 150, and a rubber anti-slip sleeve is bonded to the surface of the rotating handle. The fixed splint 160 is arranged in a circular shape and fixed. A rubber gasket is bonded to the surface of the clamping plate 160. The fixed clamping plate 160 is connected to one end of the threaded rod 140 through a rotating sleeve. A scale line is provided on the top edge of the mounting plate. Furthermore, the mounting frame 110 is used to carry the clamping sleeve 120, the clamping sleeve 120 is used to carry the threaded sleeve 130, the threaded sleeve 130 is used to carry the threaded rod 140, the threaded rod 140 is used to drive the fixed clamping plate 160 to move relative to each other, the fixed clamping plate 160 is used to clamp and fix, the hand wheel 150 is used to facilitate the rotation of the threaded rod 140, and the slide groove 170 is used to carry the slide 210;

[0037] The adjustment assembly 200 includes a slide 210 installed in the inner cavity of the slide 170 and sliding along the slide 170, a fixing pin 270 installed on one side of the slide 210, a connecting rod 220 installed on one side of the slide 210, an articulated frame 230 installed on one side of the connecting rod 220, an articulated shaft 240 installed between the articulated frames 230, a self-locking motor 250 installed on one side of the articulated frame 230 and having its output end connected to the articulated shaft 240, a flip seat 260 installed on the surface of the articulated shaft 240, and a mounting frame 110. A fixing pin 270 hole is opened on the side close to the fixing pin 270, and the fixing pin 270 holes are evenly distributed in a straight line. Furthermore, the slide 210 is used to adjust the position, and the fixing pin 270 is used to fix the position of the slide 210 on the mounting frame 110. The connecting rod 220 is used to support the articulated frame 230, and the articulated frame 230 is used to support the articulated shaft 240. The articulated shaft 240 is used to support the flip seat 260. The flip seat 260 is used to achieve angle adjustment. The self-locking motor 250 is used to drive the articulated shaft 240 to rotate.

[0038] The bone grafting assembly 300 includes a guide sleeve 310 installed on the flip seat 260, a bone grafting needle 320 installed in the inner cavity of the guide sleeve 310, a handle 330 installed on the top of the bone grafting needle 320, and a bone grafting needle head 340 installed at the bottom of the bone grafting needle 320. The flip seat 260 is provided with a mounting hole that matches the guide sleeve 310, the surface of the guide sleeve 310 is provided with a scale line, the inner side wall of the guide sleeve 310 is provided with an internal thread, the surface of the bone grafting rod is provided with a matching external thread, and the surface of the handle 330 is bonded with an anti-slip sleeve. Furthermore, the guide sleeve 310 is used to carry the bone grafting needle 320, the bone grafting needle 320 is used to carry the bone grafting needle head 340, the bone grafting needle head 340 is used for bone grafting puncture, and the handle 330 is used to facilitate the rotation of the bone grafting needle rod.

[0039] Combine Figures 1-4 The specific principle of the pedicle vertebral bone implant of this embodiment is as follows: a sleeve 120 is provided on both sides of the bottom of the mounting frame 110, a threaded sleeve 130 is provided on one side of the sleeve 120, a threaded rod 140 is provided in the inner cavity of the threaded sleeve 130, a hand wheel 150 is provided at one end of the threaded rod 140, and a fixed splint 160 is provided at the other end of the threaded rod 140. The threaded rod 140 is rotated by the hand wheel 150 to drive the fixed splint 160 to move relative to each other, thereby achieving rapid clamping and fixing, and convenient installation. The assembly and disassembly is highly flexible; the position of the slide 210 in the slide groove 170 is fixed by the fixing pin 270, which makes it easy to adjust the position of the bone graft puncture; the angle of the bone graft puncture is easily adjusted by the cooperation of the articulated frame 230, the articulated shaft 240, the self-locking motor 250 and the flip seat 260, and is easy to adjust. The guide sleeve 310 limits the bone graft needle rod 320 and the active trajectory, and then fixes the puncture angle of the bone graft needle 340, which can prevent position deviation during the bone graft puncture process and help improve the success rate of the operation.

[0040] Although the present invention has been described above with reference to embodiments, various modifications may be made thereto and equivalent components may be substituted without departing from the scope of the present invention. In particular, as long as there are no structural conflicts, the various features of the embodiments disclosed herein may be combined with each other in any manner, and the omission of an exhaustive description of such combinations in this specification is solely for the sake of space and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A transpedicular vertebral bone implant, characterized in that: include: The mounting assembly (100) comprises a mounting frame (110), a jacket (120) arranged on both sides of the bottom of the mounting frame (110), a threaded sleeve (130) arranged on one side of the jacket (120), a threaded rod (140) arranged in the inner cavity of the threaded sleeve (130), a hand wheel (150) arranged at one end of the threaded rod (140), a fixed clamping plate (160) arranged at the other end of the threaded rod (140), and a slide groove (170) arranged at the top of the mounting frame (110); The adjustment assembly (200) comprises a slide seat (210) arranged in the inner cavity of the slide slot (170) and sliding left and right along the slide slot (170), a fixing pin (270) arranged on one side of the slide seat (210), a connecting rod (220) arranged on one side of the slide seat (210), an articulated frame (230) arranged on one side of the connecting rod (220), an articulated shaft (240) arranged between the articulated frames (230), a self-locking motor (250) arranged on one side of the articulated frame (230) and having an output end connected to the articulated shaft (240), and a flip seat (260) arranged on the surface of the articulated shaft (240); The bone grafting assembly (300) comprises a guide sleeve (310) arranged on a flip seat (260), a bone grafting needle (320) arranged in the inner cavity of the guide sleeve (310), a handle (330) arranged on the top of the bone grafting needle (320), and a bone grafting needle head (340) arranged at the bottom of the bone grafting needle (320).

2. The transpedicular vertebral bone implant according to claim 1, characterized in that: The surface of the hand wheel (150) is provided with a rotating handle, and the surface of the rotating handle is provided with a rubber anti-slip sleeve.

3. The transpedicular vertebral bone implant according to claim 1, characterized in that: The fixing clamp (160) is arranged in a circular shape, and a rubber gasket is arranged on the surface of the fixing clamp (160).

4. The transpedicular vertebral bone implant according to claim 1, characterized in that: The fixed clamping plate (160) is connected to one end of the threaded rod (140) via a rotating sleeve.

5. The transpedicular vertebral bone implant according to claim 1, characterized in that: The top edge of the mounting plate is provided with scale lines.

6. The transpedicular vertebral bone implant according to claim 1, characterized in that: A fixing pin (270) hole is provided on one side of the mounting frame (110) close to the fixing pin (270), and the fixing pin (270) holes are evenly distributed in a straight line.

7. The transpedicular vertebral bone implant according to claim 1, characterized in that: The flip seat (260) is provided with a mounting hole that matches the guide sleeve (310).

8. The transpedicular vertebral bone implant according to claim 1, characterized in that: The surface of the guide sleeve (310) is provided with scale lines.

9. The transpedicular vertebral bone implant according to claim 1, characterized in that: The inner side wall of the guide sleeve (310) is provided with an internal thread, and the surface of the bone grafting rod is provided with a matching external thread.

10. The transpedicular vertebral bone implant according to claim 1, characterized in that: The surface of the handle (330) is provided with an anti-slip cover.

Images