Total knee joint replacement guide plate

Abstract

The utility model discloses a total knee arthroplasty guide plate, which relates to the technical field of knee arthroplasty and comprises a base plate component, the base plate component comprises a base piece, a mounting piece is fixedly mounted at the top of the base piece, a top block component is fixedly mounted at the bottom of the mounting piece, and a side block component is fixedly mounted on the base piece. The top block assembly and the side block assembly are both 3d printing pieces, the top block assembly and the side block assembly are made of polylactic acid, a first fixing hole is formed in the middle of the base piece, a guide groove is formed in the middle of the top end of the base piece, and an observation groove is formed in the middle of the mounting piece; according to the utility model, the top block assembly and the side block assembly can be replaced, materials are saved, and the top block assembly and the side block assembly are small in overall size, high in printing speed, beneficial to improving efficiency and high in practical value.

Description

TECHNICAL FIELD

[0001] The utility model relates to knee arthroplasty technical field, concretely is a kind of total knee arthroplasty guide plate. BACKGROUND

[0002] Knee arthroplasty is also called total knee arthroplasty, it is a common orthopedic surgery, for treating severe knee joint disease or injury. This surgery removes the damaged part of the knee joint, and replaces it with an artificial prosthesis (usually made of metal and plastic) to restore the function of the knee joint and relieve pain, total knee arthroplasty guide plate is a tool used to assist surgeons in precise osteotomy and prosthesis installation during total knee arthroplasty surgery. This guide plate is usually customized according to the specific anatomical data of the patient by 3d printing technology, aiming to improve the accuracy and repeatability of the surgery, so as to improve the surgical outcome and the rehabilitation of the patient.

[0003] Based on the above, the present inventor found that there are the following problems: the current replacement guide plate is usually made of 3d printing as a whole, and can only be used once, which is relatively wasteful, and the overall volume is large, the printing time is long, and it is not convenient to use.

[0004] Therefore, in view of the above, the existing structure and defects are studied and improved, and a total knee arthroplasty guide plate is provided to achieve the purpose of having more practical value. INVENTION CONTENTS

[0005] The utility model aims at providing a kind of total knee arthroplasty guide plate to solve the problems raised in the above background.

[0006] A kind of total knee arthroplasty guide plate, including base plate assembly, the base plate assembly includes base sheet, the installation sheet is fixedly installed on the top of the base sheet, the top block assembly is fixedly installed in the bottom of the installation sheet, and the base sheet is fixedly installed with side block assembly, the top block assembly and side block assembly are all 3d printing, and the material of the top block assembly and side block assembly is polylactic acid, first fixed hole is set in the middle of the base sheet, guide slot is set in the top end middle of the base sheet, observation slot is set in the middle of the installation sheet.

[0007] By adopting the technical scheme, the top block assembly is fixedly installed at the bottom of the installation sheet, and the side block assembly is fixedly installed on the base sheet, so that the base plate assembly can be fixedly installed on the top block assembly and the side block assembly, the top block assembly and the side block assembly are both 3D printed parts, and the materials of the top block assembly and the side block assembly are polylactic acid, so that the top block assembly and the side block assembly can be printed according to the x-ray sheet data of the patient, the device can be conveniently fixed on the patient's bone, accurate positioning of the device on the bone cutting is realized, the first fixing hole is arranged in the middle of the base sheet, so that the device and the bone can be fixedly connected by using a kirschner wire or a screw, and the bone cutting is prevented from shaking, the guide groove is arranged in the middle of the top end of the base sheet, so that the saw sheet can be guided, and the bone cutting is accurately performed, the observation groove is arranged in the middle of the installation sheet, so that the fitting of the top fitting groove and the side fitting groove with the bone can be observed when the device is installed, and the positioning accuracy of the device installation is ensured.

[0008] Further, the installation sheet is provided with a positioning block at one end of the bottom, and a screw hole is arranged in the middle of the positioning block.

[0009] By adopting the technical scheme, the installation sheet is provided with a positioning block at one end of the bottom, and a screw hole is arranged in the middle of the positioning block, so that the top block assembly can be fixedly installed on the base plate assembly.

[0010] Further, the base sheet is provided with a limiting groove on one side facing the side block assembly, and first bolt holes are arranged on both sides of the base sheet.

[0011] By adopting the technical scheme, the base sheet is provided with a limiting groove on one side facing the side block assembly, and first bolt holes are arranged on both sides of the base sheet, so that the side block assembly can be fixedly installed on the base plate assembly.

[0012] Further, the top block assembly comprises a top printing block, and a top fitting groove is arranged in the bottom of the top printing block.

[0013] By adopting the technical scheme, the top fitting groove is arranged in the bottom of the top printing block, so that the top block assembly can be closely fitted with the end of the patient's bone, and accurate guidance of the bone cutting is realized.

[0014] Further, two positioning holes are arranged in the top of the top printing block, and the positioning holes are in clamping connection with the positioning block.

[0015] By adopting the technical scheme, the positioning holes are in clamping connection with the positioning block, so that the installation position of the top printing block and the installation sheet can be positioned.

[0016] Further, a fixing screw is threadedly connected in the middle of the positioning block, and the fixing screw passes through the screw hole.

[0017] By adopting the technical scheme, the top block assembly is fixedly installed at the bottom of the mounting sheet through the fixing screw passing through the screw hole.

[0018] Further, the side block assembly comprises a side printing block, and a side fitting groove is formed on a side of the side printing block away from the base sheet.

[0019] By adopting the technical scheme, the side fitting groove is formed on the side of the side printing block away from the base sheet, so that the side block assembly can be closely fitted with the side of the bone.

[0020] Further, a second fixing hole and a second bolt hole are formed on the surface of the side printing block, a limiting strip is arranged on the side of the side printing block facing the base sheet, and the limiting strip is in clamping connection with the limiting groove.

[0021] By adopting the technical scheme, the limiting strip is in clamping connection with the limiting groove, so that the installation of the side printing block and the base sheet can be positioned, the first fixing hole and the second fixing hole are overlapped, the first bolt hole and the second bolt hole are overlapped, and the device can be fixed on the bone of the patient through the Kirschner wire or the screw passing through the first fixing hole and the second fixing hole.

[0022] Further, a fixing bolt is arranged in the middle of the second bolt hole, a nut is threadedly connected to one end of the fixing bolt, and the fixing bolt passes through the first bolt hole.

[0023] By adopting the technical scheme, the nut is threadedly connected to one end of the fixing bolt, and the fixing bolt passes through the first bolt hole, so that the side block assembly can be fixedly connected with the base sheet.

[0024] Compared with the prior art, the device has the following beneficial effects: the top block assembly is fixedly installed at the bottom of the mounting sheet, the base sheet is fixedly installed with the side block assembly, the base sheet assembly can be used to fixedly install the top block assembly and the side block assembly, the top block assembly and the side block assembly are both 3D printed parts, and the material of the top block assembly and the side block assembly is polylactic acid, so that the top block assembly and the side block assembly can be printed according to the x-ray sheet data of the patient, the device can be fixed on the bone of the patient, the device can be used to accurately position the bone cutting, the first fixing hole is formed in the middle of the base sheet, the device can be fixedly connected with the bone through the Kirschner wire or the screw, the bone cutting can be prevented from shaking, the guide groove is formed in the middle of the top end of the base sheet, the saw sheet can be guided, the accurate bone cutting can be realized, the observation groove is formed in the middle of the mounting sheet, the fitting of the top fitting groove and the side fitting groove with the bone can be observed when the device is installed, and the positioning accuracy of the device installation is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a three-dimensional structure schematic view of the full knee joint replacement guide plate of the utility model;

[0026] Figure 2 It is an exploded view of the full knee joint replacement guide plate of the utility model;

[0027] Figure 3 It is a three-dimensional structure schematic view of the base assembly of the utility model;

[0028] Figure 4 It is an exploded view of the top block assembly of the utility model;

[0029] Figure 5 It is an exploded view of the side block assembly of the utility model.

[0030] In the figure: 101, base plate assembly; 10101, base sheet; 10102, mounting sheet; 10103, first bolt hole; 10104, positioning block; 10105, screw hole; 10106, observation groove; 10107, limiting groove; 10108, first fixed hole; 10109, guide groove; 102, top block assembly; 10201, top printing block; 10202, top lamination groove; 10203, fixed screw; 10204, positioning hole; 103, side block assembly; 10301, side printing block; 10302, side lamination groove; 10303, limiting strip; 10304, second fixed hole; 10305, second bolt hole; 10306, fixed bolt; 10307, nut. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0032] Please refer to Figures 1-5The utility model provides a technical scheme: a full knee joint replacement guide plate, including base plate subassembly 101, base plate subassembly 101 includes basic sheet 10101, and the fixed mounting of installation sheet 10102 is installed at basic sheet 10101 top, and the fixed mounting of top block subassembly 102 is installed at installation sheet 10102 bottom, and the fixed mounting of side block subassembly 103 is installed at basic sheet 10101, and the fixed mounting of top block subassembly 102 is installed at installation sheet 10102 bottom, and the fixed mounting of side block subassembly 103 is installed at basic sheet 10101, and base plate subassembly 101 is convenient for the fixed mounting of top block subassembly 102 and side block subassembly 103, and top block subassembly 102 and side block subassembly 103 are all 3d printed parts, and the material of top block subassembly 102 and side block subassembly 103 is polylactic acid, and the material of top block subassembly 102 and side block subassembly 103 is polylactic acid, and it is convenient to print top block subassembly 102 and side block subassembly 103 according to the x-ray sheet data of patient, and the device is fixed on the patient's bone, realizes the accurate positioning of the device to the bone cutting, and the first fixed hole 10108 is set up in the middle part of basic sheet 10101, and the first fixed hole 10108 is set up in the middle part of basic sheet 10101, and it is convenient to use the kirschner wire or screw to fixedly connect the device and the bone, avoids the shaking when cutting the bone, and the guide groove 10109 is set up in the middle part of the top end of basic sheet 10101, and the guide groove 10109 is set up in the middle part of the top end of basic sheet 10101, and it is convenient to guide the saw blade, and it is convenient to accurately cut the bone, and the observation groove 10106 is set up in the middle part of installation sheet 10102, and the observation groove 10106 is set up in the middle part of installation sheet 10102, and it is convenient to observe the adhesion of top adhesion groove 10202 and side adhesion groove 10302 and the bone when installing the device, and the positioning accuracy of device installation is ensured.

[0033] Wherein, the one end bottom of installation sheet 10102 is equipped with the locating block 10104, the middle part of locating block 10104 is equipped with screw hole 10105, the one end bottom of installation sheet 10102 is equipped with the locating block 10104, and the middle part of locating block 10104 is equipped with screw hole 10105, and it is convenient to install top block subassembly 102 on base plate subassembly 101.

[0034] Wherein, the one side of basic sheet 10101 towards side block subassembly 103 is equipped with limit slot 10107, and the both sides of basic sheet 10101 are equipped with first bolt hole 10103, and the one side of basic sheet 10101 towards side block subassembly 103 is equipped with limit slot 10107, and the both sides of basic sheet 10101 are equipped with first bolt hole 10103, and it is convenient to install side block subassembly 103 on base plate subassembly 101.

[0035] The top block assembly 102 comprises a top printing block 10201, and a top fitting groove 10202 is formed at the bottom of the top printing block 10201. The top fitting groove 10202 is arranged at the bottom of the top printing block 10201, so that the top block assembly 102 can be closely fitted with the end of the patient's bone, thereby accurately guiding the osteotomy.

[0036] The top printing block 10201 is provided with two positioning holes 10204 at the top, and the positioning holes 10204 are connected with the positioning block 10104 in a clamping manner. The positioning holes 10204 are connected with the positioning block 10104 in a clamping manner, so as to position the installation position of the top printing block 10201 and the mounting plate 10102.

[0037] The positioning block 10104 is provided with a fixing screw 10203 which is connected with the middle part in a threaded manner. The fixing screw 10203 passes through the screw hole 10105. The fixing screw 10203 passes through the screw hole 10105, so as to fix and install the top block assembly 102 at the bottom of the mounting plate 10102 by using the fixing screw 10203.

[0038] The side block assembly 103 comprises a side printing block 10301, and a side fitting groove 10302 is formed at the side of the side printing block 10301 away from the base plate 10101. The side fitting groove 10302 is arranged at the side of the side printing block 10301 away from the base plate 10101, so that the side block assembly 103 can be closely fitted with the side of the bone.

[0039] The surface of the side printing block 10301 is provided with a second fixing hole 10304 and a second bolt hole 10305. The side printing block 10301 is provided with a limiting strip 10303 on the side facing the base plate 10101. The limiting strip 10303 is connected with the limiting groove 10107 in a clamping manner. The limiting strip 10303 is connected with the limiting groove 10107 in a clamping manner, so as to position the installation of the side printing block 10301 and the base plate 10101. The first fixing hole 10108 and the second fixing hole 10304 are overlapped, and the first bolt hole 10103 and the second bolt hole 10305 are overlapped. The Kirschner wire or screw passes through the first fixing hole 10108 and the second fixing hole 10304 to fix the device on the patient's bone.

[0040] The second bolt hole 10305 is provided with a fixing bolt 10306 which is inserted in the middle. One end of the fixing bolt 10306 is connected with a nut 10307 in a threaded manner. The fixing bolt 10306 passes through the first bolt hole 10103. One end of the fixing bolt 10306 is connected with the nut 10307 in a threaded manner. The fixing bolt 10306 passes through the first bolt hole 10103, so as to fixedly connect the side block assembly 103 and the base plate 10101.

[0041] Specifically, the working principle of the total knee replacement guide plate: when in use, the positioning hole 10204 is connected with the positioning block 10104 through clamping connection, so as to facilitate the positioning of the installation position of the top printing block 10201 and the mounting piece 10102; the fixing screw 10203 passes through the screw hole 10105, so as to facilitate the fixing of the top block assembly 102 on the bottom of the mounting piece 10102 by using the fixing screw 10203; the limiting strip 10303 is connected with the limiting groove 10107 through clamping connection, so as to facilitate the positioning of the installation of the side printing block 10301 and the base piece 10101, so that the first fixing hole 10108 and the second fixing hole 10304 coincide, the first bolt hole 10103 and the second bolt hole 10305 coincide, the kirschner wire or screw passes through the first fixing hole 10108 and the second fixing hole 10304 to fix the device on the patient's bone, one end of the fixing bolt 10306 is threadedly connected with the nut 10307, and the fixing bolt 10306 passes through the first bolt hole 10103, so as to facilitate the fixed connection of the side block assembly 103 and the base piece 10101; the top block assembly 102 and the side block assembly 103 are both 3d printed parts, and the material of the top block assembly 102 and the side block assembly 103 is polylactic acid, so as to facilitate the printing of the top block assembly 102 and the side block assembly 103 according to the x-ray film data of the patient, and facilitate the fixation of the device on the patient's bone, so as to realize the accurate positioning of the device on the bone cutting, the first fixing hole 10108 is arranged in the middle of the base piece 10101, so as to facilitate the fixed connection of the device and the bone by using the kirschner wire or screw, and avoid the shaking of the bone cutting; the guide groove 10109 is arranged in the middle of the top end of the base piece 10101, so as to facilitate the guiding of the saw blade, and facilitate the accurate bone cutting; the observation groove 10106 is arranged in the middle of the mounting piece 10102, so as to facilitate the observation of the fitting of the top fitting groove 10202 and the side fitting groove 10302 with the bone during the installation of the device, and ensure the accurate positioning of the device installation.

[0042] The above only describes the preferred embodiments of the present application and is not used to limit the present application. Those skilled in the art can make various changes and modifications to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A total knee replacement guide plate, characterized in that, The system includes a substrate assembly (101), which includes a base sheet (10101), a mounting piece (10102) fixedly mounted on the top of the base sheet (10101), a top block assembly (102) fixedly mounted on the bottom of the mounting piece (10102), and a side block assembly (103) fixedly mounted on the base sheet (10101). The top block assembly (102) and the side block assembly (103) are both 3D printed parts, and the material of the top block assembly (102) and the side block assembly (103) is polylactic acid. A first fixing hole (10108) is opened in the middle of the base sheet (10101), a guide groove (10109) is opened in the middle of the top of the base sheet (10101), and an observation groove (10106) is opened in the middle of the mounting piece (10102).

2. The total knee replacement guide plate according to claim 1, characterized in that, The mounting plate (10102) has a positioning block (10104) at one bottom end, and a screw hole (10105) is provided in the middle of the positioning block (10104).

3. The total knee replacement guide plate according to claim 2, characterized in that, The base plate (10101) has a limiting groove (10107) on the side facing the side block assembly (103), and the base plate (10101) has first bolt holes (10103) on both sides.

4. The total knee arthroplasty guide plate according to claim 1, characterized in that, The top block assembly (102) includes a top printing block (10201), and the bottom of the top printing block (10201) has a top bonding groove (10202).

5. A total knee replacement guide plate according to claim 4, characterized in that, The top printing block (10201) has two positioning holes (10204) on its top, and the positioning holes (10204) are engaged with the positioning block (10104).

6. A total knee replacement guide plate according to claim 5, characterized in that, The positioning block (10104) is threaded with a fixing screw (10203) in the middle, and the fixing screw (10203) passes through the screw hole (10105).

7. A total knee replacement guide plate according to claim 1, characterized in that, The side block assembly (103) includes a side printing block (10301), and the side printing block (10301) has a side bonding groove (10302) on the side away from the base sheet (10101).

8. A total knee replacement guide plate according to claim 7, characterized in that, The side printing block (10301) has a second fixing hole (10304) and a second bolt hole (10305) on its surface. The side printing block (10301) has a limiting strip (10303) on the side facing the base plate (10101). The limiting strip (10303) is engaged with the limiting groove (10107).

9. A total knee replacement guide plate according to claim 8, characterized in that, A fixing bolt (10306) is inserted through the middle of the second bolt hole (10305). One end of the fixing bolt (10306) is threaded with a nut (10307), and the fixing bolt (10306) passes through the first bolt hole (10103).

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