Femoral posterior condyle accurate osteotomy guide device in knee joint replacement

Abstract

The utility model discloses a femoral posterior condyle accurate osteotomy guiding device in knee arthroplasty, which comprises two groups of clamping components, the two groups of clamping components are both used for clamping and fixing legs of a patient, one sides of the surfaces of the two groups of clamping components are both fixedly connected with a marking component, and the other sides of the surfaces of the two groups of clamping components are fixedly connected with the marking component. The marking assembly is used for marking the position, needing an operation, of the leg of a patient, fixing blocks are fixedly connected to the other sides of the surfaces of the two clamping assemblies, and a measuring ruler is jointly and fixedly connected between the two fixing blocks. The device can be clamped near the joint of a patient through the clamping assembly to fix the leg of the patient, then the joint position, needing to be operated, of the leg of the patient is measured and calculated through the measuring ruler so that the optimal operation position can be found out, and finally the optimal operation position of the leg of the patient is marked through the marking assembly. And the effect of conveniently improving the operation efficiency is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and in particular relates to a precise osteotomy guide device for the posterior femoral condyle in knee replacement surgery. Background Art

[0002] Knee replacement surgery, also known as total knee replacement, is a common surgical procedure used to treat severe degenerative knee disease or injury in which the doctor removes the damaged knee joint and replaces it with an artificial joint component.

[0003] To this end, a precise osteotomy guide for the posterior femoral condyle in knee replacement surgery, with publication number CN114176709B, is provided, comprising a rectangular block and a vernier caliper, the rectangular block comprising a first rectangular block and a second rectangular block, the first rectangular block being provided with a hollow groove, the tail end of the vernier caliper being provided with a left base and a right base, as well as a left wing and a right wing; the width and thickness of the vernier caliper match the width and thickness of the hollow groove; the left base and the right base are used to be inserted into the gap of the cartilage provided below the medial posterior femoral condyle, and the top surface of one of the left base and the right base contacts the cartilage below the medial posterior femoral condyle, at which time the 0 scale line of the vernier caliper represents the lowest point of the cartilage; by moving the left wing and the right wing, the left wing and the right wing reach the scale value on the caliper main part of the vernier caliper corresponding to the position of the required osteotomy line, and the position of the osteotomy line is accurately marked on the femoral osteotomy surface according to the scale value on the caliper main part of the vernier caliper.

[0004] The problem with the existing technology is that during knee replacement surgery, the patient's joints need to be tested accordingly. Since the patient may move around randomly, the test results may be inaccurate, which will only increase the difficulty of the operation. Therefore, the patient's legs need to be fixed and the location where surgery is required needs to be marked. However, traditional devices can no longer meet people's daily work needs. Therefore, we propose a precise osteotomy guide device for the posterior femoral condyle during knee replacement surgery. Utility Model Content

[0005] The purpose of the present invention is to provide a precise osteotomy guide device for the posterior femoral condyle in knee replacement surgery, so as to solve the problems raised in the above-mentioned background technology.

[0006] The present invention is implemented as follows: a precise osteotomy guide device for the posterior femoral condyle in knee replacement surgery includes a clamping assembly, two groups of the clamping assemblies are used to clamp and fix the patient's legs, one side of the surface of the two groups of clamping assemblies are commonly fixedly connected to a marking assembly, the marking assembly is used to mark the position of the patient's leg requiring surgery, the other side of the surface of the two groups of clamping assemblies are fixedly connected to a fixing block, and a measuring ruler is commonly fixedly connected between the two groups of fixing blocks.

[0007] As a preferred embodiment of the present invention, the clamping assembly includes a second clamping plate, two groups of the second clamping plates are respectively fixedly connected to one side of the two groups of fixed blocks, and one side of the surface of the two groups of the second clamping plates is fixedly connected to a shell.

[0008] As a preferred embodiment of the present invention, both groups of the housings are movably connected with sliding rods, both groups of the sliding rod surfaces are fixedly connected with positioning blocks, both groups of the housings and the sliding rods are commonly fixedly connected with a second spring, and both groups of the sliding rods have a first clamping plate fixedly connected at one end.

[0009] As a preferred embodiment of the present invention, one side of the two groups of casings are movably connected with a positioning rod corresponding to the positioning block, and a first spring is fixedly connected between the two groups of positioning rods and the casings.

[0010] As a preferred embodiment of the present invention, the marking assembly includes a connecting shell, two groups of the connecting shells are respectively fixedly connected to one end of the two groups of first clamping plates, sliders are movably connected in the two groups of connecting shells, and a second connecting rod is commonly fixedly connected between the two groups of sliders.

[0011] As a preferred embodiment of the present invention, the surfaces of the two groups of the second connecting rods are fixedly connected to the first fixed column, the two groups of connecting shells are commonly fixedly connected to the first connecting rod, the middle part of the surface of the first connecting rod is fixedly connected to the second fixed column, and the second fixed column and the first fixed column are commonly fixedly connected to a spring top rod.

[0012] As a preferred embodiment of the present invention, two groups of connecting plates are fixedly connected to one side of the surface of the first fixing column, and one end of the two groups of connecting plates are commonly fixedly connected to a marking frame.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. The utility model is designed with a marking component, a clamping component, a fixing block and a measuring ruler. When in use, the clamping component can be used to clamp the device near the patient's joint to fix the patient's leg. Then, the measuring ruler is used to measure and calculate the joint position of the patient's leg that requires surgery in order to find the best surgical position. Finally, the marking component is used to mark the best surgical position on the patient's leg, thereby achieving the effect of improving surgical efficiency.

[0015] 2. The utility model adopts the design of the first clamping plate, the sliding rod, the positioning block, the sleeve, the first spring, the positioning rod, the second spring and the second clamping plate. When the first clamping plate and the second clamping plate are respectively placed at appropriate positions on the lower end and the upper end of the patient's leg, the second spring will push the sleeve to drive the second clamping plate to move downward to clamp the patient's leg. When the clamping is completed, the first spring will pull the positioning rod to be positioned inside the positioning block, completing the fixation of the position of the second clamping plate, thereby achieving the effect of preventing poor examination results due to the patient's movement during the examination of the patient's leg.

[0016] 3. The utility model is designed with a connecting shell, a first connecting rod, a slider, a second connecting rod, a first fixing column, a second fixing column, a spring push rod, a connecting plate and a marking frame. After the patient's leg is fixed, the spring push rod will push the second connecting rod and the first fixing column to move forward inside the connecting shell using the slider. When the marking frame at one end of the connecting plate is driven to fit the patient's leg, a pen can be used to mark the appropriate position on the marking frame, thereby achieving the effect of making the operation more precise. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a measuring ruler provided by an embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the marking assembly provided by an embodiment of the present utility model;

[0019] Figure 3 It is a schematic diagram of the structure of the clamping assembly provided by an embodiment of the present utility model.

[0020] In the figure: 1. Marking assembly; 101. Connecting shell; 102. First connecting rod; 103. Sliding block; 104. Second connecting rod; 105. First fixing column; 106. Second fixing column; 107. Spring push rod; 108. Connecting plate; 109. Marking frame; 2. Clamping assembly; 201. First clamping plate; 202. Sliding rod; 203. Positioning block; 204. Housing; 205. First spring; 206. Positioning rod; 207. Second spring; 208. Second clamping plate; 3. Fixed block; 4. Measuring ruler. DETAILED DESCRIPTION

[0021] In order to further understand the content, features and effects of the present invention, the following embodiments are listed and described in detail with reference to the accompanying drawings.

[0022] The structure of the present utility model is described in detail below with reference to the accompanying drawings.

[0023] like Figures 1 to 3As shown, an embodiment of the present invention provides a precise osteotomy guide device for the posterior femoral condyle in knee replacement surgery, including a clamping assembly 2, two groups of clamping assemblies 2 are used to clamp and fix the patient's legs, one side of the surface of the two groups of clamping assemblies 2 are commonly fixedly connected with a marking assembly 1, the marking assembly 1 is used to mark the position of the patient's leg requiring surgery, the other side of the surface of the two groups of clamping assemblies 2 are fixedly connected with a fixing block 3, and a measuring ruler 4 is commonly fixedly connected between the two groups of fixing blocks 3.

[0024] The above scheme is adopted: through the design of the marking component 1, the clamping component 2, the fixing block 3 and the measuring ruler 4, when in use, the clamping component 2 can be used to clamp the device near the patient's joint to fix the patient's leg, and then the measuring ruler 4 is used to measure and calculate the joint position of the patient's leg that requires surgery in order to find the best surgical position, and finally the marking component 1 is used to mark the best surgical position on the patient's leg, thereby achieving the effect of facilitating improving surgical efficiency.

[0025] refer to Figure 3 The clamping assembly 2 includes a second clamping plate 208, and the two groups of second clamping plates 208 are respectively fixedly connected to one side of the two groups of fixed blocks 3. One side of the surface of the two groups of second clamping plates 208 is fixedly connected to the sleeve 204; the two groups of sleeves 204 are movably connected with the sliding rod 202, and the surfaces of the two groups of sliding rods 202 are fixedly connected with the positioning blocks 203. The two groups of sleeves 204 and the sliding rods 202 are commonly fixedly connected with the second spring 207, and one end of the two groups of sliding rods 202 is fixedly connected to the first clamping plate 201; one side of the two groups of sleeves 204 is movably connected with a positioning rod 206 corresponding to the positioning block 203, and the two groups of positioning rods 206 and the sleeve 204 are commonly fixedly connected with the first spring 205.

[0026] The above-mentioned scheme is adopted: through the design of the first clamping plate 201, the sliding rod 202, the positioning block 203, the shell 204, the first spring 205, the positioning rod 206, the second spring 207 and the second clamping plate 208, when the first clamping plate 201 and the second clamping plate 208 are placed at appropriate positions on the lower end and the upper end of the patient's leg respectively, the second spring 207 will push the shell 204 to drive the second clamping plate 208 to move downward to clamp the patient's leg. When the clamping is completed, the first spring 205 will pull the positioning rod 206 to be positioned inside the positioning block 203, completing the fixation of the position of the second clamping plate 208, thereby achieving the effect of preventing poor examination results due to the patient's movement during the examination of the patient's leg.

[0027] refer to Figure 2The marking assembly 1 includes a connecting shell 101, and the two groups of connecting shells 101 are respectively fixedly connected to one end of the two groups of first clamping plates 201, and the two groups of connecting shells 101 are movably connected with sliders 103, and the two groups of sliders 103 are commonly fixedly connected with the second connecting rod 104; the surfaces of the two groups of second connecting rods 104 are fixedly connected with the first fixed column 105, and the two groups of connecting shells 101 are commonly fixedly connected with the first connecting rod 102, and the middle part of the surface of the first connecting rod 102 is fixedly connected with the second fixed column 106, and the second fixed column 106 and the first fixed column 105 are commonly fixedly connected with a spring top rod 107; one side of the surface of the first fixed column 105 is fixedly connected to two groups of connecting plates 108, and one end of the two groups of connecting plates 108 is commonly fixedly connected to the marking frame 109.

[0028] The above scheme is adopted: through the design of the connecting shell 101, the first connecting rod 102, the slider 103, the second connecting rod 104, the first fixing column 105, the second fixing column 106, the spring push rod 107, the connecting plate 108 and the marking frame 109, when the patient's leg is fixed, the spring push rod 107 will push the second connecting rod 104 and the first fixing column 105 to move forward inside the connecting shell 101 using the slider 103. When the marking frame 109 at one end of the connecting plate 108 is driven to fit the patient's leg, a pen can be used to mark the appropriate position on the marking frame 109, thereby achieving the effect of making the operation more precise.

[0029] The working principle of this utility model:

[0030] During use, when the first clamping plate 201 and the second clamping plate 208 are placed at appropriate positions on the lower end and upper end of the patient's legs respectively, the second spring 207 will push the shell 204 to drive the second clamping plate 208 to move downward to clamp the patient's legs. When the clamping is completed, the first spring 205 will pull the positioning rod 206 to position inside the positioning block 203, completing the fixation of the position of the second clamping plate 208. When the patient's legs are fixed, the spring push rod 107 will push the second connecting rod 104 and the first fixing column 105 to move forward inside the connecting shell 101 using the slider 103. When the marking frame 109 at one end of the connecting plate 108 is driven to fit the patient's legs, you can use a pen to mark the appropriate position on the marking frame 109.

[0031] To sum up: this precise osteotomy guide device for the posterior femoral condyle in knee replacement surgery, through the structure of the marking component 1, the connecting shell 101, the first connecting rod 102, the slider 103, the second connecting rod 104, the first fixed column 105, the second fixed column 106, the spring push rod 107, the connecting plate 108 and the marking frame 109, solves the problem that during knee replacement surgery, it is necessary to perform corresponding inspections on the patient's joints. Since the patient may move around at will, the inspection results may be inaccurate, which will only increase the difficulty of the operation. Therefore, it is necessary to fix the patient's legs and mark the position where surgery is required, but traditional devices can no longer meet people's daily work needs.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

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

Claims

1. A guide device for precise osteotomy of the posterior femoral condyle during knee replacement surgery, comprising a clamping assembly (2), characterized in that: The two groups of clamping assemblies (2) are both used to clamp and fix the patient's legs. One side of the surface of the two groups of clamping assemblies (2) is fixedly connected to a marking assembly (1). The marking assembly (1) is used to mark the position of the patient's leg that requires surgery. The other side of the surface of the two groups of clamping assemblies (2) is fixedly connected to a fixing block (3). A measuring ruler (4) is fixedly connected between the two groups of fixing blocks (3). The clamping assembly (2) includes a second clamping plate (208), two groups of the second clamping plates (208) are respectively fixedly connected to one side of the two groups of fixed blocks (3), and one side of the surface of the two groups of the second clamping plates (208) is fixedly connected to a sleeve (204); The two sets of housings (204) are both movably connected with a slide bar (202), the surfaces of the two sets of slide bars (202) are both fixedly connected with a positioning block (203), a second spring (207) is fixedly connected between the two sets of housings (204) and the slide bars (202), and one end of the two sets of slide bars (202) is both fixedly connected with a first clamping plate (201); One side of the two sets of casings (204) is movably connected to a positioning rod (206) corresponding to the positioning block (203), and a first spring (205) is fixedly connected between the two sets of positioning rods (206) and the casing (204); The marking assembly (1) comprises a connecting shell (101), two groups of the connecting shells (101) are respectively fixedly connected to one end of two groups of first clamping plates (201), the two groups of the connecting shells (101) are movably connected with a slider (103), and the two groups of the sliders (103) are commonly fixedly connected with a second connecting rod (104); The surfaces of the two groups of second connecting rods (104) are fixedly connected to the first fixing column (105), the two groups of connecting shells (101) are commonly fixedly connected to the first connecting rod (102), the middle part of the surface of the first connecting rod (102) is fixedly connected to the second fixing column (106), and the second fixing column (106) and the first fixing column (105) are commonly fixedly connected to a spring top rod (107); Two groups of connecting plates (108) are fixedly connected to one side of the surface of the first fixing column (105), and one end of the two groups of connecting plates (108) is commonly fixedly connected to a marking frame (109).

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