Knee joint periphery osteotomy guide plate and osteotomy device

Abstract

The osteotomy guide plate comprises a fixing base, the top of the fixing base is fixedly connected with a lifting guide rail, the inner wall of the lifting guide rail is provided with a first sliding groove, the inner wall of the first sliding groove is connected with a sliding base in a sliding mode, and the inner wall of the top end of the sliding base is fixedly connected with a guide rod. The outer wall of the side, close to the fixing base, of the guide rod is fixedly connected with a main clamping plate frame, and a first clamping plate is fixedly installed on the outer wall of the bottom end of the main clamping plate frame. And a second lead screw pushes an auxiliary clamping plate frame and a second clamping plate to synchronously slide to adjust the position, so that the two sides of the knee joint of a patient are conveniently clamped and fixed, the guiding and positioning precision of a kirschner wire is improved, and the stability and the operation convenience of osteotomy around the knee joint are conveniently improved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically a knee joint osteotomy guide plate and osteotomy device. Background Technology

[0002] Knee joint diseases such as osteoarthritis, genu varum, and genu valgum are common in clinical practice. Periarticular osteotomy is one of the important means of treating these diseases. By adjusting the force line of the knee joint, it can effectively relieve pain, improve joint function, and slow down the degenerative process of the joint. However, when locating the periarticular area of ​​the knee joint in traditional periarticular osteotomy surgery, it is usually inconvenient to precisely adjust the height of the osteotomy guide plate and the position of the splint according to the height of the patient's knee joint, which leads to inaccurate positioning. It usually requires frequent X-ray irradiation for positioning, which causes discomfort to the patient's knee joint due to X-ray exposure, and it is inconvenient to reduce the use of X-rays. Utility Model Content

[0003] The purpose of this invention is to provide a periarticular osteotomy guide plate and osteotomy device for the knee joint, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A periarticular osteotomy guide plate and osteotomy device for the knee joint includes a fixation base. A lifting guide rail is fixedly connected to the top of the fixation base. A first sliding groove is formed on the inner wall of the lifting guide rail. A sliding seat is slidably connected to the inner wall of the first sliding groove. A guide rod is fixedly connected to the inner wall of the top of the sliding seat. A main clamping plate frame is fixedly connected to the outer wall of the guide rod near the fixation base. A first clamping plate is fixedly installed on the outer wall of the bottom end of the main clamping plate frame. A secondary clamping plate frame is slidably connected to the outer wall of the guide rod. A second clamping plate is fixedly installed on the outer wall of the clamping plate frame. A push rod is threadedly connected to the inner wall of the clamping plate frame. An auxiliary clamping plate is rotatably connected to the end of the push rod.

[0006] In a preferred embodiment of this utility model, the inner wall of the bottom end of the lifting guide rail is rotatably connected to the first lead screw via a bearing, the outer wall of the first lead screw is threadedly connected to the inner wall of the slide block, and the inner wall of the lifting guide rail is threadedly connected to the drive shaft.

[0007] In a preferred embodiment of this utility model, a first handwheel is fixedly connected to the outer end of the drive shaft, and the outer wall of the drive shaft is connected to the inner wall of the first lead screw through bevel gear meshing.

[0008] In a preferred embodiment of this utility model, the outer wall of the guide rod is provided with a scale, the inner wall of the guide rod is uniformly provided with a first guide hole, and the top of the guide rod is provided with a second sliding groove.

[0009] In a preferred embodiment of this utility model, the end of the second slide groove is fixedly connected to the end cover plate by screws, and the inner wall of the sub-clamp frame is provided with a through hole, which is slidably connected to the outer wall of the guide rod.

[0010] In a preferred embodiment of the present invention, the inner wall of the through hole is provided with a slider, the slider is slidably connected to the second slide groove, and the inner wall of the second slide groove and the end cover plate are threadedly connected to a second lead screw.

[0011] In a preferred embodiment of this utility model, the second lead screw is threadedly connected to the inner wall of the slider, the end of the second lead screw is fixedly connected to the second handwheel, and the inner wall of the push rod is uniformly provided with second guide holes.

[0012] In a preferred embodiment of this utility model, the outer wall of the push rod is fixedly connected to the handle, and the end of the push rod is fixedly connected to the limiting block by bolts.

[0013] In a preferred embodiment of this utility model, the head of the bolt is recessed into the interior of the limiting block, the outer wall of the auxiliary clamp is fixedly connected to the rotating limiting ring, and the outer wall of the limiting block is rotatably connected to the inner wall of the rotating limiting ring.

[0014] An osteotomy device comprising the osteotomy guide plate described in any one of the claims.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

[0016] 1. By installing a fixed first clamp and an adjustable second clamp on the outer wall of the guide rod, and by rotating the second handwheel, the second screw pushes the auxiliary clamp frame and the second clamp to slide and adjust their positions synchronously. This facilitates clamping and fixing both sides of the patient's knee joint, improves the accuracy of guiding and positioning the Kirschner wire, and facilitates the stability and ease of operation of osteotomy around the knee joint.

[0017] 2. By setting up an auxiliary splint, the auxiliary splint can further supplement and strengthen the positioning of the patient's leg based on the positioning of the first and second splints, thereby improving the practicality and structural stability of the equipment. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 A schematic diagram of the main structure of a periarticular osteotomy guide plate and osteotomy device for the knee joint;

[0020] Figure 2 A schematic diagram of the lateral structure of a periarticular osteotomy guide plate and osteotomy device for the knee joint;

[0021] Figure 3 This is a schematic diagram of the exploded structure of a sliding block in a periarticular osteotomy guide plate and osteotomy device for the knee joint.

[0022] Figure 4 A schematic diagram of the working structure of a secondary splint in a periarticular osteotomy guide plate and osteotomy device for the knee joint.

[0023] Figure 5 This is a schematic diagram of a reinforcing splint structure in a periarticular osteotomy guide plate and osteotomy device for the knee joint.

[0024] In the figure: fixed seat 100, lifting guide rail 110, first slide groove 111, slide block 120, first lead screw 150, scale 131, second slide groove 132, end cover plate 133, second lead screw 134, second handwheel 135, first guide hole 136, drive shaft 140, first handwheel 141, bevel gear 142, main clamping plate frame 200, first clamping plate 210, auxiliary clamping plate frame 300, through hole 310, slider 320, second guide hole 330, rotation limit ring 340, second clamping plate 340, push rod 400, hand lever 410, limit block 420, bolt 430, rotation limit ring 440, auxiliary clamping plate 450. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] Example 1: As Figures 1-5 The system includes a fixed base 100, a lifting guide rail 110 fixedly connected to the top of the fixed base 100, a first sliding groove 111 provided on the inner wall of the lifting guide rail 110, a sliding block 120 slidably connected to the inner wall of the first sliding groove 111, a guide rod 130 fixedly connected to the inner wall of the top of the sliding block 120, a main clamping plate frame 200 fixedly connected to the outer wall of the guide rod 130 near the fixed base 100, a first clamping plate 210 fixedly installed on the outer wall of the bottom end of the main clamping plate frame 200, a secondary clamping plate frame 300 slidably connected to the outer wall of the guide rod 130, a second clamping plate 340 fixedly installed on the outer wall of the clamping plate frame 300, a push rod 400 threadedly connected to the inner wall of the clamping plate frame 300, and an auxiliary clamping plate 450 rotatably connected to the end of the push rod 400.

[0027] The specific application scenario of this embodiment is as follows: By installing a fixed first clamp 210 and an adjustable second clamp 340 on the outer wall of the guide rod 130, and by rotating the second handwheel 135, the second lead screw 134 pushes the auxiliary clamp frame 300 and the second clamp 340 to slide and adjust their positions synchronously. This facilitates clamping and fixing both sides of the patient's knee joint, improves the accuracy of guiding and positioning the Kirschner wire, and facilitates the stability and ease of operation of osteotomy around the knee joint. By setting an auxiliary clamp 450, the auxiliary clamp 450 can further supplement and strengthen the positioning of the patient's leg based on the positioning of the first clamp 210 and the second clamp 340, thereby improving the practicality and structural stability of the device.

[0028] Example 2: Figure 2 and Figure 3 The outer end of the drive shaft 140 is fixedly connected to the first handwheel 141. The outer wall of the drive shaft 140 is connected to the inner wall of the first lead screw 150 through a bevel gear 142. The outer wall of the guide rod 130 is provided with a scale 131. The inner wall of the guide rod 130 is evenly provided with first guide holes 136. The top of the guide rod 130 is provided with a second slide groove 132. The end of the second slide groove 132 is fixedly connected to the end cover plate 133 by screws. The inner wall of the auxiliary clamping plate frame 300 is provided with... There is a through hole 310, which is slidably connected to the outer wall of the guide rod 130. The inner wall of the through hole 310 is provided with a slider 320, which is slidably connected to the second slide groove 132. The inner wall of the second slide groove 132 and the end cover plate 133 are threadedly connected to a second lead screw 134. The second lead screw 134 is threadedly connected to the inner wall of the slider 320. The end of the second lead screw 134 is fixedly connected to a second handwheel 135. The inner wall of the push rod 400 is evenly provided with second guide holes 330.

[0029] The specific usage scenario of this embodiment is as follows: by holding the first handwheel 141 to rotate the drive shaft 140, the drive shaft 140 drives the slide 120 to adjust the height on the inner wall of the lifting guide rail 110, so that one side of the patient's knee joint is in contact with the inner wall of the first splint 210. Then, by holding the second handwheel 135 to drive the second lead screw 134 to rotate, so that the second lead screw 134 drives the auxiliary splint frame 300 to move and adjust its position on the outer wall of the guide rod 130.

[0030] Example 3: As Figure 5 The outer wall of the push rod 400 is fixedly connected to the handle 410. The end of the push rod 400 is fixedly connected to the limit block 420 by the bolt 430. The head of the bolt 430 is recessed into the interior of the limit block 420. The outer wall of the auxiliary clamping plate 450 is fixedly connected to the rotating limit ring 440. The outer wall of the limit block 420 is rotatably connected to the inner wall of the rotating limit ring 440.

[0031] The specific application scenario of this embodiment is as follows: by rotating the hand lever 410, the hand lever 410 drives the push rod 400 to rotate in, so that the push rod 400 pushes the auxiliary splint 450 to clamp and fix the outer wall of the knee joint.

[0032] The working principle of this utility model is as follows: When used by those skilled in the art, the fixing seat 100 is fixed at an appropriate position on the operating table. By holding the first handwheel 141, the drive shaft 140 is rotated, causing the drive shaft 140 to drive the slide 120 to adjust its height on the inner wall of the lifting guide rail 110, so that one side of the patient's knee joint is in contact with the inner wall of the first splint 210. Then, by holding the second handwheel 135, the second lead screw 134 is rotated, thereby causing the second lead screw 134 to drive the auxiliary splint frame 3. The position of the guide rod 130 is adjusted by moving it on the outer wall so that the second clamp 340 and the first clamp 210 cooperate to stably clamp and position both sides of the knee joint. Then, the hand lever 410 is rotated by hand, so that the hand lever 410 drives the push rod 400 to rotate in, so that the push rod 400 pushes the auxiliary clamp 450 to clamp and fix the outer wall of the knee joint. Then, Kirschner wires are inserted through the first guide hole 136 and the second guide hole 330 to make holes in the knee joint, thereby performing osteotomy around the knee joint.

[0033] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A periarticular osteotomy guide plate for the knee joint, comprising a fixation base (100), wherein a lifting guide rail (110) is fixedly connected to the top of the fixation base (100), characterized in that, The inner wall of the lifting guide rail (110) is provided with a first sliding groove (111). The inner wall of the first sliding groove (111) is slidably connected to a slide block (120). The top inner wall of the slide block (120) is fixedly connected to a guide rod (130). The outer wall of the guide rod (130) near the fixed seat (100) is fixedly connected to a main clamping plate frame (200). The bottom outer wall of the main clamping plate frame (200) is fixedly installed with a first clamping plate (210). The outer wall of the guide rod (130) is slidably connected to a secondary clamping plate frame (300). The outer wall of the clamping plate frame (300) is fixedly installed with a second clamping plate (340). The inner wall of the clamping plate frame (300) is threadedly connected to a push rod (400). The end of the push rod (400) is rotatably connected to an auxiliary clamping plate (450).

2. The osteotomy guide plate around the knee joint according to claim 1, characterized in that, The inner wall of the bottom end of the lifting guide rail (110) is rotatably connected to the first lead screw (150) through a bearing. The outer wall of the first lead screw (150) is threadedly connected to the inner wall of the slide block (120). The inner wall of the lifting guide rail (110) is threadedly connected to the drive shaft (140).

3. The osteotomy guide plate around the knee joint according to claim 2, characterized in that, The outer end of the drive shaft (140) is fixedly connected to the first handwheel (141), and the outer wall of the drive shaft (140) is connected to the inner wall of the first lead screw (150) through a bevel gear (142).

4. The osteotomy guide plate around the knee joint according to claim 1, characterized in that, The outer wall of the guide rod (130) is provided with a scale (131), the inner wall of the guide rod (130) is uniformly provided with a first guide hole (136), and the top of the guide rod (130) is provided with a second sliding groove (132).

5. The osteotomy guide plate around the knee joint according to claim 4, characterized in that, The end of the second slide (132) is fixedly connected to the end cover plate (133) by screws. The inner wall of the sub-clamp frame (300) is provided with a through hole (310), and the through hole (310) is slidably connected to the outer wall of the guide rod (130).

6. The osteotomy guide plate around the knee joint according to claim 5, characterized in that, The inner wall of the through hole (310) is provided with a slider (320), the slider (320) is slidably connected to the second slide groove (132), and the inner wall of the second slide groove (132) and the end cover plate (133) are threadedly connected to the second lead screw (134).

7. A periarticular osteotomy guide plate according to claim 6, characterized in that, The second lead screw (134) is threaded to the inner wall of the slider (320), and the end of the second lead screw (134) is fixedly connected to the second handwheel (135). The inner wall of the push rod (400) is uniformly provided with second guide holes (330).

8. The osteotomy guide plate around the knee joint according to claim 1, characterized in that, The outer wall of the push rod (400) is fixedly connected to the handle (410), and the end of the push rod (400) is fixedly connected to the limiting block (420) and the push rod (400) by bolts (430).

9. A periarticular osteotomy guide plate according to claim 8, characterized in that, The head of the bolt (430) is lowered into the interior of the limiting block (420), and the outer wall of the auxiliary clamp (450) is fixedly connected to the rotating limiting ring (440). The outer wall of the limiting block (420) is rotatably connected to the inner wall of the rotating limiting ring (440).

10. An osteotomy device, characterized in that, The osteotomy device includes the osteotomy guide plate as described in any one of claims 1 to 9.

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