Bone joint wound opening equipment

Abstract

The utility model discloses bone joint wound opening equipment, and belongs to the technical field of medical instruments. Comprising a holding rod; the pulling and holding sleeve is limited at one end of the holding rod in a sliding manner; the screw rod is in threaded connection with the middle part of the pulling sleeve; the clamping pieces are used for clamping and limiting the articular bone and are hinged and mounted in the pulling and holding sleeve in a symmetrical structure; and the limiting seat is used for abutting against the articular bone and is fixedly mounted in the pulling sleeve. According to the device, the screw rotates to drive the rotationally connected connecting block to lift in a limiting manner, so that the extrusion seat and the synchronous sliding plate perform limiting extrusion on the clamping piece and the limiting seat, the limiting seat and the clamping piece are firmly fixed and limited outside the articular bone for fixation, and the articular bone clamping stability of the device is improved.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and more specifically, to a bone and joint wound distraction device. Background Art

[0002] Total knee replacement has become one of the surgical treatments for advanced degenerative osteoarthritis, rheumatoid arthritis, ankylosing spondylitis and other diseases. At the same time, in the preoperative preparation stage, X-rays are generally performed to determine the situation and location of the problem in the knee joint, but during the operation, the bones on both sides of the surgical joint need to be supported and pulled apart.

[0003] The document with prior art publication number CN217244559U provides a clinical surgical bone and joint distraction device. The related technology of the device can pull the patient's joints to a certain extent, which is convenient for surgery. The operation is simple and easy to use. During use, the pulling operation can be achieved by pulling the L-shaped handle, and the top screw can fix the U-shaped splint.

[0004] Although the above-mentioned prior art solution can achieve the relevant beneficial effects through the structure of the prior art, it still has the following defects: the device clamps and fixes the articular bone by tightening the top plate, but the two U-shaped splints have a certain pulling force during the process of stretching and separating, and the clamped articular bone cannot be effectively stretched by the top plate alone.

[0005] In view of this, we propose a bone and joint wound distraction device. Utility Model Content

[0006] 1. Technical issues to be solved

[0007] The purpose of the present application is to provide a bone and joint wound distraction device, which solves the technical problems that can only be solved by the prior art and achieves technical effects.

[0008] 2. Technical solution

[0009] The present application provides a bone and joint wound distraction device, comprising:

[0010] Grip the club;

[0011] A pull sleeve for adjusting the spacing, with the sliding limit located at one end of the grip rod;

[0012] A screw for adjustment, threadedly connected to the middle of the pulling sleeve;

[0013] A clamping piece for clamping the limited joint bone is hingedly installed inside the pulling sleeve in a symmetrical structure;

[0014] A limiting seat for abutting against the joint bone is fixedly installed inside the pulling sleeve.

[0015] By adopting the above technical solution, the screw is used to drive the clamping piece to limit the flipping, and the clamping limit is located outside the articular bone, thereby fixing the articular bone. Under the control of the grip rod, the two pulling sleeves that fix the articular bone are limited and separated, thereby realizing the fixation and expansion operation of the articular bone.

[0016] As an optional solution to the technical solution of the present application document, one end of the grip rod is fixedly connected to a guide plate, one side of the guide plate is fixedly connected to a fixed block, an adjusting screw is rotatably connected inside the fixed block, the external thread of the adjusting screw is connected to a threaded sleeve, and push-pull rods are hingedly installed at both ends of the threaded sleeve.

[0017] By adopting the above technical solution, the guide plate is used to limit the sliding of the holding sleeve outside the guide plate, and under the rotation control of the adjusting screw rod, the threaded sleeve drives the hinged push-pull rod to limit the expansion of the holding sleeve, thereby improving the stability of the expansion movement of the holding sleeve.

[0018] As an optional solution to the technical solution of the present application document, one end of the screw is rotatably connected to a connecting block, the outside of the connecting block is symmetrically structured and fixedly connected to two extrusion seats, the extrusion seats are limited to sliding in the clamping member, and one side of the connecting block is fixedly connected to a synchronous slide.

[0019] By adopting the above technical solution, the screw is rotated to drive the rotating connected connecting block to limit the lifting and lowering, so that the extrusion seat and the synchronous slide limit the extrusion of the clamping member and the limit seat, and the limit seat and the clamping member are firmly fixed to the outside of the articular bone, thereby improving the stability of the device in clamping the articular bone.

[0020] As an optional solution of the technical solution of the present application document, the limiting groove opened on one side of the clamping member is slidably connected to the extrusion seat for limiting, and the groove opened on one side of the clamping member is fixedly connected to the pressing plate through a spring.

[0021] By adopting the above technical scheme, the movable extrusion seat and the limit groove are used to limit the sliding extrusion, thereby driving the clamping member hingedly installed in the pulling sleeve to limit and flip, so as to clamp and fix the joint bone. At the same time, the compression plate elastically connected to one side of the clamping member that clamps the joint bone can fit tightly with the bone surface, thereby improving the fixation limit.

[0022] As an optional solution of the technical solution of the present application document, a pressure plate is hinged on one side of the limit seat, a sliding hole seat is fixedly connected to one side of the pressure plate, the sliding hole seat is slidably connected to the synchronous slide, and the groove opened in the sliding hole seat is arranged in an inclined structure.

[0023] By adopting the above technical solution, the synchronous sliding plate is raised and lowered and adjusted, and the sliding hole seat is limited, thereby driving the pressure plate hingedly installed on one side of the limit seat to flip over, press the joint bone to limit the position, and improve the stability of the clamping limit of the device.

[0024] 3. Beneficial effects

[0025] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0026] 1. The present application utilizes the rotation of the screw to drive the rotationally connected connecting block to limit the lifting and lowering, so that the extrusion seat and the synchronous slide block limit the extrusion of the clamping member and the limit seat, and the limit seat and the clamping member are firmly fixed to the outside of the joint bone, thereby improving the stability of the device in clamping the joint bone.

[0027] 2. The present application utilizes a movable extrusion seat and a limiting groove to limit sliding extrusion, thereby driving the clamping member hingedly installed in the pulling sleeve to limit and flip, thereby clamping and fixing the joint bone. At the same time, the compression plate elastically connected to one side of the clamping member that clamps the joint bone can fit tightly with the bone surface, thereby improving the fixation limit. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The left side schematic diagram is a schematic diagram of the overall structure of a bone and joint wound distraction device disclosed in a preferred embodiment of the present application;

[0029] Figure 2 This is a bottom view schematic diagram of the overall structure of a bone and joint wound distraction device disclosed in a preferred embodiment of the present application;

[0030] Figure 3 This is a schematic diagram of the installation of a partial structure of a bone and joint wound distraction device disclosed in a preferred embodiment of the present application;

[0031] Figure 4 This is a schematic diagram of the overall structure of the grip rod of the bone and joint wound distraction device disclosed in a preferred embodiment of the present application;

[0032] Figure 5 This is a schematic diagram of the overall structure of the screw of a bone and joint wound distraction device disclosed in a preferred embodiment of the present application;

[0033] Figure 6 This is a schematic diagram of the overall structure of the clamping member of the bone and joint wound distraction device disclosed in a preferred embodiment of the present application;

[0034] Figure 7 This is a schematic diagram of the overall structure of the limit position of the bone and joint wound distraction device disclosed in a preferred embodiment of the present application;

[0035] Explanation of the numbers in the figure: 1. Grip rod; 2. Holding sleeve; 3. Screw rod; 4. Clamping piece; 5. Limit seat; 11. Guide plate; 12. Fixed block; 13. Adjusting screw rod; 14. Threaded sleeve; 15. Push-pull rod; 31. Connecting block; 32. Extrusion seat; 33. Synchronous slide plate; 41. Limit groove; 42. Pressing plate; 51. Pressing plate; 52. Sliding hole seat. DETAILED DESCRIPTION

[0036] The present application is further described in detail below in conjunction with the accompanying drawings.

[0037] Reference Figure 1-3 , the pulling sleeve 2 for adjusting the distance in the bone and joint wound distraction device recorded in the embodiment of the present application is limited in sliding at one end of the grip rod 1;

[0038] A screw rod 3 for adjustment is threadedly connected to the middle of the pulling sleeve 2;

[0039] A clamping member 4 for clamping and limiting the articular bone is hingedly installed inside the pulling sleeve 2 in a symmetrical structure;

[0040] A limiting seat 5 for contacting against the joint bone is fixedly installed inside the pulling sleeve 2 .

[0041] The bone joint wound surface expansion device uses a screw rod 3 to drive the clamping member 4 to limit the flip, and the clamping member is limited to the outside of the joint bone, thereby fixing the joint bone, and under the control of the grip rod 1, the two pulling sleeves 2 that fix the joint bone are limited to separate, thereby realizing the fixation and expansion operation of the joint bone.

[0042] Reference Figure 4 and Figure 1 In the bone and joint wound distraction device recorded in the embodiment of the present application, one end of the grip rod 1 is fixedly connected to a guide plate 11, one side of the guide plate 11 is fixedly connected to a fixed block 12, an adjusting screw rod 13 is rotatably connected inside the fixed block 12, the external thread of the adjusting screw rod 13 is connected to a threaded sleeve 14, and push-pull rods 15 are hingedly installed at both ends of the threaded sleeve 14.

[0043] The bone joint wound distraction device uses a guide plate 11 to limit the holding sleeve 2 to slide outside the guide plate 11, and under the rotation control of the adjusting screw rod 13, the threaded sleeve 14 drives the hinged push-pull rod 15 to limit the expansion of the holding sleeve 2, thereby improving the stability of the expansion movement of the holding sleeve 2.

[0044] Reference Figure 5 and Figure 3 In the bone and joint wound distraction device recorded in the embodiment of the present application, one end of the screw rod 3 is rotatably connected to a connecting block 31, and the outside of the connecting block 31 is symmetrically structured and fixedly connected to two extrusion seats 32, the extrusion seats 32 are limited to sliding in the clamping member 4, and a synchronous slide plate 33 is fixedly connected to one side of the connecting block 31.

[0045] The bone joint wound distraction device utilizes the rotation of the screw rod 3 to drive the rotationally connected connecting block 31 to limit the lifting and lowering, so that the extrusion seat 32 and the synchronous slide plate 33 limit the extrusion of the clamping member 4 and the limiting seat 5, and the limiting seat 5 and the clamping member 4 are firmly fixed to the outside of the joint bone, thereby improving the stability of the device in clamping the joint bone.

[0046] Reference Figure 6 and Figure 3 In the bone and joint wound distraction device described in the embodiment of the present application, the limiting groove 41 opened on one side of the clamping member 4 is slidably connected to the extrusion seat 32 for limiting, and the groove opened on one side of the clamping member 4 is fixedly connected to the pressing plate 42 by a spring.

[0047] The bone joint wound distraction device utilizes the movable extrusion seat 32 and the limiting groove 41 to limit the sliding extrusion, thereby driving the clamping member 4 hingedly installed in the pulling sleeve 2 to limit and flip, thereby clamping and fixing the joint bone. At the same time, the pressing plate 42 elastically connected to one side of the clamping member 4 that clamps the joint bone can fit tightly with the bone surface, thereby improving the fixation limit.

[0048] Reference Figure 7 and Figure 3 In the bone joint wound distraction device recorded in the embodiment of the present application, a pressure plate 51 is hinged on one side of the limit seat 5, and a sliding hole seat 52 is fixedly connected to one side of the pressure plate 51. The sliding hole seat 52 is slidably connected to the synchronous slide 33, and the groove opened in the sliding hole seat 52 is arranged in an inclined structure.

[0049] The bone joint wound distraction device utilizes the synchronous slide plate 33 to be raised and lowered, and the sliding limiter 52 to slide and limit, thereby driving the pressure plate 51 hingedly mounted on one side of the limiter seat 5 to limit and flip, press and limit the joint bone, and improve the stability of the device's clamping and limiting.

[0050] Working principle: When the doctor puts the pulling sleeve 2 in the device on the outside of the patient's joint to be separated, and then manually rotates the screw 3 clockwise, the rotating screw 3 drives the connecting block 31 that is connected to the connection block 31 to move upward, so that the extrusion seat 32 fixedly connected to the outside of the connecting block 31 is limited to slide and squeeze in the limiting groove 41, driving the clamping member 4 hingedly installed in the pulling sleeve 2 to limit and flip, so as to clamp and limit the joint bone;

[0051] While the connecting block 31 is limitedly moved upward, the synchronous slide plate 33 fixedly connected on one side thereof and the sliding hole seat 52 hingedly installed on one side of the limit seat 5 are slidably limited, thereby driving the pressing plate 51 to be limitedly turned over, and the joint bone is further pressed and limitedly fixed;

[0052] Finally, the adjusting screw 13 is rotated, and the rotating adjusting screw 13 pushes the threaded sleeve 14 connected with the external thread to drive the push-pull rod 15 hingedly installed between the threaded sleeve 14 and the holding sleeve 2 to be limited and separated, thereby realizing the distraction operation of the joint bone.

Claims

1. A bone and joint wound distraction device, characterized in that: include: Grip the club; A pull sleeve for adjusting the spacing, with the sliding limit located at one end of the grip rod; A screw for adjustment, threadedly connected to the middle of the pulling sleeve; A clamping piece for clamping the limited joint bone is hingedly installed inside the pulling sleeve in a symmetrical structure; A limiting seat for abutting against the joint bone is fixedly installed inside the pulling sleeve.

2. The bone and joint wound distraction device according to claim 1, characterized in that: One end of the gripping rod is fixedly connected to a guide plate, one side of the guide plate is fixedly connected to a fixed block, an adjusting screw is rotatably connected inside the fixed block, an external thread of the adjusting screw is connected to a threaded sleeve, and push-pull rods are hingedly installed at both ends of the threaded sleeve.

3. The bone and joint wound distraction device according to claim 1, characterized in that: One end of the screw rod is rotatably connected with a connecting block, the outside of the connecting block is symmetrically structured and fixedly connected with two extrusion seats, the extrusion seats are limited to slide in the clamping member, and one side of the connecting block is fixedly connected with a synchronous slide plate.

4. The bone and joint wound distraction device according to claim 1, characterized in that: The limiting groove opened on one side of the clamping piece is slidably connected with the extrusion seat for limiting, and the groove opened on one side of the clamping piece is fixedly connected with the pressing plate through a spring.

5. The bone and joint wound distraction device according to claim 1, characterized in that: A pressure plate is hinged on one side of the limit seat, a sliding hole seat is fixedly connected to one side of the pressure plate, the sliding hole seat is slidably connected to the synchronous slide plate, and the groove opened in the sliding hole seat is arranged in an inclined structure.

Images