Osteotomy assembly and device for intercondylar osteotomy

Abstract

The embodiment of the invention provides an osteotomy assembly and a device for intercondylar osteotomy, and belongs to the technical field of medical instruments, an osteotomy main body is provided with a restraining face located on the first side of the osteotomy main body, the restraining face defines a containing cavity and a mounting opening communicated with the containing cavity, and the mounting opening contains bone tissue so that the bone tissue can be at least partially located in the containing cavity; the restraining face is used for restraining the position of the osteotomy body relative to bone tissue. The guide part is arranged on the second side, away from the restraining face, of the osteotomy body and provided with a guide face, and the guide face is used for enabling the swing saw to conduct osteotomy treatment on bone tissue located in the osteotomy body in the direction determined by the guide face. The bone drill guider is detachably connected to the guiding piece and / or the osteotomy body and used for determining bone drill guiding so as to conduct osteotomy treatment on the bone tissue. According to the osteotomy assembly and the device for intercondylar osteotomy, the requirement for switching between two different osteotomy modes of pendulum saw osteotomy and bone drill osteotomy can be met.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to an osteotomy assembly and a device for intercondylar osteotomy. Background Art

[0002] The device for intercondylar osteotomy is mainly used for osteotomy of bone tissue between condyles, and is mainly used to treat lesions at the joints of bones. During the operation, since osteotomy with a bone drill is more convenient than osteotomy with an oscillating saw, osteotomy with a bone drill is preferred. However, when the patient's bones are relatively hard and it is difficult to drill the guide bone drill or the bone chisel, it is necessary to switch to osteotomy with an oscillating saw. In the related art, the function of the device for intercondylar osteotomy is relatively single, and the device for intercondylar osteotomy is difficult to adapt to switching between two different osteotomy methods: oscillating saw osteotomy and bone drill osteotomy. Summary of the invention

[0003] In view of this, the embodiments of the present application hope to provide an osteotomy assembly and a device for intercondylar osteotomy to meet the need for switching between two different osteotomy methods: oscillating saw osteotomy and bone drill osteotomy.

[0004] To achieve the above-mentioned object, a first aspect of an embodiment of the present application provides a device for intercondylar osteotomy, the device comprising:

[0005] An osteotomy body having a constraint surface, the constraint surface being located on a first side of the osteotomy body, the constraint surface being arranged to form an accommodating cavity and a mounting opening communicating with the accommodating cavity, the mounting opening being used to accommodate bone tissue so that the bone tissue is at least partially located in the accommodating cavity, and the constraint surface being used to at least partially contact the bone tissue, and the constraint surface being used to constrain the position of the osteotomy body relative to the bone tissue;

[0006] A guide member is arranged on a second side of the osteotomy body away from the constraint surface, the guide member having a guide surface, and the guide surface is used to make the oscillating saw perform osteotomy on the bone tissue located in the osteotomy body along the direction determined by the guide surface;

[0007] The bone drill guide is detachably connected to the guide member and / or the osteotomy body and is used to determine the bone drill guide so as to perform osteotomy on the bone tissue located in the osteotomy body.

[0008] In one embodiment, the guide surface includes a first guide surface and a second guide surface, and the guide member includes:

[0009] A first guide plate connected to the osteotomy body, the first guide plate protruding from the second side of the osteotomy body, the first guide surface formed on the first guide plate;

[0010] An installation platform, which protrudes from the second side of the osteotomy main body and is respectively connected to the first guide plate and the osteotomy main body. At least part of the second guide surface is formed on the installation platform, and the second guide surface is arranged crosswise with the first guide surface. The number of the installation platforms is at least one, and the bone drill guide is detachably connected to the guide member through at least one of the installation platforms.

[0011] In one embodiment, the guide member includes two installation platforms, each of the installation platforms is formed with the second guide surface, and the two second guide surfaces are connected through the first guide surface. The first guide surface and the two second guide surfaces are used to enclose an osteotomy area, and the osteotomy area extends from the second side to the first side along the feed direction.

[0012] In one embodiment, the device further includes a baffle, which can be attached to the first guide surface, and the edges on both sides of the baffle are respectively abutted against the two second guide surfaces.

[0013] In one embodiment, the first guide plate is formed with two parallel guide grooves, which are opened along the feed direction. The baffle includes two sub-plates, and each sub-plate has a guide rail. The guide rails of each sub-plate are respectively matched with one of the guide grooves, so that each sub-plate is detachably installed on the first guide plate in the feed direction. And when the guide rail of the sub-plate is located in the corresponding guide groove, one side of each sub-plate abuts against the corresponding second guide surface.

[0014] In one embodiment, the bone drill guide is connected to the osteotomy main body through the installation platform. Each installation platform is respectively formed with an installation hole, and the bone drill guide has an installation rod that is installed and matched with the installation hole. And the shape and size of each installation hole are respectively adapted to the corresponding installation rod.

[0015] In one embodiment, the sizes and / or cross-sectional shapes of the installation holes on both sides of the osteotomy area are different.

[0016] In one embodiment, at least one of the installation platforms is formed with a locking hole communicating with the corresponding installation hole. The locking hole is located at one end of the corresponding installation hole facing the constraint surface. The locking hole is formed on the side wall of the installation hole, and the extending direction of the locking hole is arranged crosswise with the extending direction of the installation hole;

[0017] The bone drill guide includes a guide body and a locking device disposed on the guide body. The mounting rod is formed on the guide body. The locking device has a locking portion. When the locking device follows the corresponding mounting rod and moves into the mounting hole, the locking portion can move into the locking hole under the action of elastic force. The locking portion can move out of the locking hole against the elastic force under the action of an external force so that the mounting rod and the locking device can be disengaged from the mounting hole.

[0018] In one embodiment, the guide member further includes a second guide plate. The second guide plate is respectively connected to the mounting tables on both sides of the osteotomy region. The second guide plate is located on the side of the plane where the first guide surface is located away from the mounting opening. The second guide plate is arranged opposite to the first guide plate. The first guide plate, the second guide plate and the two second guide surfaces jointly enclose the osteotomy region for guiding the osteotome.

[0019] In one embodiment, a protruding anti-fooling rib is formed on the side of the second guide plate facing the first guide plate.

[0020] In one embodiment, the bone drill guide is formed with a guide boss, a guiding portion and an avoidance area. The guide boss is used for guiding the bone drill for osteotomy. The avoidance area is opened along the feed direction. The guiding portion is located on the side of the guide boss away from the first guide plate. The first guide plate, the guiding portion and the avoidance area are jointly used for guiding the osteotome.

[0021] In one embodiment, the guide member further includes a guiding table. The guiding table is respectively connected to the mounting table and the osteotomy main body. The guiding table protrudes from the second side of the osteotomy main body. The guiding table is located on the side of the plane where the first guide surface is located away from the mounting opening. The second guide surface straddles the mounting table and the guiding table.

[0022] In one embodiment, the bone tissue is a femur with a bone condyle. The device further has a positioning hole. The positioning hole penetrates through the guiding table and the osteotomy main body. The positioning hole is used to determine the position of the column of the femoral condyle prosthesis relative to the femur.

[0023] In one embodiment, the osteotomy main body includes:

[0024] A first restraint member and a second restraint member. The first restraint member and the second restraint member are used to at least partially form the restraint surface;

[0025] The bone tissue enters the accommodation cavity through the mounting opening along a first direction;

[0026] The second restraint has a first inspection window and a second inspection window. The outer contour of the second restraint includes a first contour and a second contour. The first contour and the second contour, and the first inspection window and the second inspection window are arranged side by side perpendicular to the first direction;

[0027] The contour of the first inspection window includes a third contour corresponding to the first contour, and the contour of the second inspection window includes a fourth contour corresponding to the second contour;

[0028] Moreover, the first contour and the third contour are used to determine the position of the second restraint relative to the bone tissue, or the second contour and the fourth contour are used to determine the position of the second restraint relative to the bone tissue.

[0029] In one embodiment, an inspection notch is formed on the first restraint, and the inspection notch is used to inspect the dimensional length of the bone tissue in a direction perpendicular to the first direction.

[0030] In one embodiment, the osteotomy main body is at least disposed through in the region determined by extending along the guiding surface.

[0031] In one embodiment, the bone drill guide has an arc surface for guiding the bone drill for osteotomy. On the central axis of the arc surface, the osteotomy main body is disposed through, so that when the bone drill processes the bone tissue, it will not be blocked by the osteotomy main body.

[0032] In the second aspect of the embodiments of the present application, an osteotomy assembly is provided, including a bone drill, a reciprocating saw for osteotomy, and any one of the above devices. The reciprocating saw performs osteotomy under the guidance of the guiding surface, and the bone drill performs osteotomy under the guidance of the bone drill guide.

[0033] In one embodiment, the bone drill has adjustment grooves arranged at intervals in sequence along the axial direction of the bone drill. The osteotomy assembly further includes a limiting ring sleeved on the bone drill and a locking device arranged on the limiting ring. The locking device can partially be located in the adjustment groove to lock the limiting ring relative to the bone drill at a corresponding position, and the locking device can disengage from the adjustment groove so that the limiting ring can move relative to the bone drill.

[0034] The device for intercondylar osteotomy of the embodiment of the present application can constrain the position of the osteotomy body relative to the bone tissue by contacting the constraint surface of the first side of the osteotomy body with the bone tissue, so that the osteotomy body can be positioned at a more accurate position relative to the bone tissue, so as to accurately perform osteotomy on the bone tissue. The guide member is located on the second side of the osteotomy body away from the constraint surface, and the degree to which the guide member protrudes from the osteotomy body toward the second side is not limited by the bone tissue and the osteotomy body. Even if the guide member is made thicker, it will not interfere with the bone tissue. The guide surface has a larger span from the second side to the first side, so that the guide surface can better guide the oscillating saw, and the oscillating saw can better perform osteotomy on the bone tissue in the osteotomy body. The bone drill guide is detachably connected to the guide member and / or the osteotomy body, and the bone drill guide plays a guiding role for the bone drill used for osteotomy. The bone drill performs osteotomy on the bone tissue located in the osteotomy body through the guiding role of the bone drill guide. When osteotomy is performed with a bone drill, a bone drill guide is installed on the guide member and / or the osteotomy body, and the bone drill is guided by the bone drill guide so that the bone drill can move in the direction determined by the bone drill guide to complete the osteotomy. When the bone tissue of the patient is hard, it is necessary to switch from osteotomy with a bone drill to osteotomy with an oscillating saw, and the bone drill guide is removed. The oscillating saw can be better guided by the guide surface on the guide member so that the oscillating saw can move in the direction determined by the guide surface to complete the osteotomy. Therefore, by utilizing the detachable connection of the bone drill guide, the device for intercondylar osteotomy of the embodiment of the present application can realize switching between two osteotomy methods: osteotomy with a bone drill and osteotomy with an oscillating saw. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is an assembly diagram of the osteotomy body, the guide member, the bone drill guide, the bone drill and the limiting ring of the embodiment of the present application;

[0036] Figure 2 An assembly diagram of an osteotomy body, a guide, and an osteotome according to an embodiment of the present application;

[0037] Figure 3 An assembly diagram of an osteotomy body, a guide, a bone drill guide, and an osteotome according to an embodiment of the present application;

[0038] Figure 4 An assembly diagram of an osteotomy body, a guide member, and bone tissue according to an embodiment of the present application;

[0039] Figure 5 This is a schematic diagram of the structure of bone tissue according to an embodiment of the present application, and shows a positioning surface on the bone tissue;

[0040] Figure 6 This is a schematic diagram of the structure of bone tissue in an embodiment of the present application, and the bone tissue shown in the figure is the structure before osteotomy;

[0041] Figure 7Schematic diagram of the structure of the bone tissue according to an embodiment of the present application. The bone tissue shown in the figure is the structure after osteotomy;

[0042] Figure 8 Schematic diagram of the structure of the femoral condyle prosthesis according to an embodiment of the present application;

[0043] Figure 9 Assembly drawing of the osteotomy main body and the guide according to an embodiment of the present application. The first guide surface and the second guide surface are shown in the figure;

[0044] Figure 10 Assembly drawing of the osteotomy main body and the guide according to an embodiment of the present application. Five sub-surfaces of the constraint surface are shown in the figure;

[0045] Figure 11 Assembly drawing of the osteotomy main body and the guide according to an embodiment of the present application. The lock hole is shown in the figure;

[0046] Figure 12 Assembly drawing of the osteotomy main body and the guide according to an embodiment of the present application. The guide groove is shown in the figure;

[0047] Figure 13 Schematic diagram of the state where the outer surface of the osteotome according to an embodiment of the present application is respectively attached to the first guide surface and the second guide surface;

[0048] Figure 14 Assembly drawing of the osteotomy main body, the guide and the baffle according to an embodiment of the present application;

[0049] Figure 15 Schematic diagram of the baffle abutting against the second guide surface according to an embodiment of the present application;

[0050] Figure 16 Schematic diagram of the structure of the guide without the second guide plate according to an embodiment of the present application;

[0051] Figure 17 Schematic diagram of the sub-plate structure according to an embodiment of the present application;

[0052] Figure 18 Schematic diagram of the structure of the bone drill guide according to an embodiment of the present application. The bone drill guide shown in the figure does not have an avoidance area;

[0053] Figure 19 Schematic diagram of the structure of the bone drill guide according to an embodiment of the present application. The bone drill guide shown in the figure is provided with an avoidance area;

[0054] Figure 20 Schematic diagram of the structure of the bone drill guide according to an embodiment of the present application. The first guide surface and the second guide surface are shown in the figure;

[0055] Figure 21 Assembly drawing of the bone drill guide and the bone drill according to an embodiment of the present application;

[0056] Figure 22 Assembly drawing of the bone drill guide and the osteotome according to the embodiment of the present application;

[0057] Figure 23 Schematic structural diagram of the bone drill according to the embodiment of the present application;

[0058] Figure 24 Assembly drawing of the limiting ring, the locking device and the bone drill according to the embodiment of the present application.

[0059] Description of reference numerals: 1, osteotomy main body; 11, constraint surface; 111, sub-surface; 12, first side; 13, second side; 14, accommodation cavity; 15, installation opening; 16, first constraint member; 161, inspection notch; 17, second constraint member; 171, first inspection window; 1711, third contour; 172, second inspection window; 1721, fourth contour; 173, first contour; 174, second contour; 2, guiding member; 21, guiding surface; 211, first guiding surface; 212, second guiding surface; 22, first guiding plate; 221, guiding groove; 23, installation table; 231, installation hole; 232, locking hole; 24, second guiding plate; 241, anti-fooling rib; 25, guiding table; 251, target surface; 26, osteotomy area; 3, bone drill guide; 31, installation rod; 32, guide body; 33, locking device; 331, locking part; 34, guiding boss; 35, guiding part; 36, avoidance area; 361, first guiding surface; 362, second guiding surface; 37, arc surface; 4, baffle; 41, sub-plate; 411, guide rail; 5, positioning hole; 100, device; 200, bone drill; 201, adjustment groove; 300, osteotome; 400, limiting ring; 500, locking device; 600, bone tissue; 601, positioning surface; 602, bone condyle; 603, storage space; 700, femoral condyle prosthesis; 701, intercondylar box; 702, column. Detailed implementation manners

[0060] It should be noted that, without conflict, the embodiments in the present application and the technical features in the embodiments may be combined with each other. The detailed description in the specific implementation manners should be understood as an explanatory illustration of the purpose of the present application and should not be regarded as an improper limitation of the present application.

[0061] In the related art, the device for intercondylar osteotomy has a relatively single function. The structure of the device applicable to osteotomy by a bone drill is mainly realized by installing a bone drill guide on a trial mold. The trial mold is a model that is almost the same as the actual prosthesis to be implanted. The thickness of the trial mold should be adapted to the thickness of the actual prosthesis. The thickness of the trial mold is relatively thin and it is difficult to meet the guiding requirements for osteotomy by a reciprocating saw. This device is difficult to meet the switching between the two osteotomy methods, namely osteotomy by a bone drill and osteotomy by a reciprocating saw. It is necessary to remove the device for osteotomy by a bone drill, that is, remove the trial mold and the bone drill guide, and then replace it with an osteotomy plate applicable to osteotomy by a reciprocating saw to perform osteotomy by a reciprocating saw. Therefore, the device for intercondylar osteotomy is difficult to adapt to the switching between the two different osteotomy methods of osteotomy by a reciprocating saw and osteotomy by a bone drill.

[0062] In view of this, an embodiment of the present application provides a device 100 for intercondylar osteotomy. Please refer to Figures 1 to 3 , and Figure 14 and Figure 15The device 100 for intercondylar osteotomy includes an osteotomy body 1, a guide member 2 and a bone drill guide 3. The osteotomy body 1 has a constraint surface 11, which is located on a first side 12 of the osteotomy body 1. The constraint surface 11 is surrounded by a receiving cavity 14 and a mounting opening 15 connected to the receiving cavity 14. The mounting opening 15 is used to receive bone tissue 600 so that the bone tissue 600 is at least partially located in the receiving cavity 14, and the constraint surface 11 is used to at least partially contact the bone tissue 600. The constraint surface 11 is used to constrain the position of the osteotomy body 1 relative to the bone tissue 600. The guide member 2 is disposed on a second side 13 of the osteotomy body 1 away from the constraint surface 11. The guide member 2 has a guide surface 21. The guide surface 21 is used to make the oscillating saw perform osteotomy on the bone tissue 600 located in the osteotomy body 1 along the direction determined by the guide surface 21. The bone drill guide 3 is detachably connected to the guide member 2 and / or the osteotomy body 1, and is used to determine the guide of the bone drill 200 so as to perform osteotomy on the bone tissue 600 located in the osteotomy body 1. With such a structural form, the constraint surface 11 of the first side 12 of the osteotomy body 1 contacts the bone tissue 600, so that the position of the osteotomy body 1 relative to the bone tissue 600 can be constrained, so that the osteotomy body 1 can be positioned at a more accurate position relative to the bone tissue 600, so as to accurately perform osteotomy on the bone tissue 600. The guide member 2 is located on the second side 13 of the osteotomy body 1 away from the constraint surface 11, and the extent to which the guide member 2 protrudes from the osteotomy body 1 toward the second side 13 is not limited by the bone tissue 600 and the osteotomy body 1. Even if the guide member 2 is made thicker, it will not interfere with the bone tissue 600. The guide surface 21 has a larger span from the second side 13 to the first side 12, so that the guide surface 21 can better guide the oscillating saw, and the oscillating saw can better perform osteotomy on the bone tissue 600 in the osteotomy body 1. The bone drill guide 3 is detachably connected to the guide member 2 and / or the osteotomy body 1. The bone drill guide 3 guides the bone drill 200 used for osteotomy. The bone drill 200 performs osteotomy on the bone tissue 600 located in the osteotomy body 1 through the guiding effect of the bone drill guide 3. When osteotomy is performed by the bone drill 200, the bone drill guide 3 is installed on the guide member 2 and / or the osteotomy body 1, and the bone drill 200 is guided by the bone drill guide 3, so that the bone drill 200 can move in the direction determined by the bone drill guide 3 to complete the osteotomy. When the bone tissue 600 of the patient is hard, it is necessary to switch from osteotomy by the bone drill 200 to osteotomy by an oscillating saw, and the bone drill guide 3 is removed. The oscillating saw can be better guided by the guide surface 21 on the guide member 2, so that the oscillating saw can move in the direction determined by the guide surface 21 to complete the osteotomy. Therefore, by utilizing the detachable connection of the bone drill guide 3, the device 100 for intercondylar osteotomy according to the embodiment of the present application can switch between two osteotomy methods: osteotomy by means of a bone drill 200 and osteotomy by means of an oscillating saw.

[0063] Illustratively, the bone drill may be a trephine.

[0064] Exemplarily, please refer to Figures 4 to 7 , the bone tissue 600 can be a femur with bone condyles 602, and a part of the bone tissue 600 between the two bone condyles 602 of the femur is cut off for implanting a suitable prosthesis.

[0065] It can be understood that the specific structure of the constraint surface 11 is not limited.

[0066] Exemplarily, please refer to Figure 10 , the constraint surface 11 includes a plurality of sub - surfaces 111, the shape of the sub - surfaces 111 is planar, the plurality of sub - surfaces 111 are connected in sequence, and adjacent two sub - surfaces 111 are arranged cross - wise.

[0067] It should be explained that "a plurality of" means two or more.

[0068] It should be explained that adjacent two sub - surfaces 111 are arranged cross - wise, that is, adjacent two sub - surfaces 111 are not parallel.

[0069] It should be noted that, please refer to Figures 1 to 3 , Figure 10 , and Figure 14 , a plurality of surfaces on the same plane should be understood as one sub - surface 111.

[0070] Exemplarily, please refer to Figures 1 to 3 , Figure 10 , and Figure 14 , the number of sub - surfaces 111 is five.

[0071] Exemplarily, the number of sub - surfaces 111 can be two.

[0072] Exemplarily, please refer to Figures 4 to 7 , on the bone tissue 600, a plurality of positioning surfaces 601 can be cut out, and at least two of the plurality of positioning surfaces 601 cooperate with the corresponding sub - surfaces 111, so as to constrain the position of the osteotomy main body 1 relative to the bone tissue 600 and realize the positioning of the osteotomy main body 1 relative to the bone tissue 600.

[0073] Exemplarily, please refer to Figures 4 to 7 , the number of positioning surfaces 601 is five, the number of sub - surfaces 111 of the constraint surface 11 is five, and the positioning surfaces 601 and the sub - surfaces 111 are in one - to - one corresponding fit.

[0074] Exemplarily, by aligning at least part of the contour of the positioning surface 601 with the contour of the constraint surface 11, the positioning of the osteotomy main body 1 relative to the bone tissue 600 is realized.

[0075] Exemplarily, please refer to Figure 4 , Figure 9 and Figure 10, the bone tissue 600 can be a femur with a femoral condyle 602. The femur partially lies within the accommodation cavity 14 through the mounting opening 15 generally along the length direction of the femur.

[0076] It can be understood that the oscillating saw moves along the guiding surface 21 so that the guiding surface 21 guides the oscillating saw.

[0077] The direction determined by the guiding surface 21, that is, the direction in which the guiding surface 21 guides the oscillating saw to perform osteotomy on the bone tissue 600.

[0078] In one embodiment, please refer to Figure 1 , the guiding member 2 protrudes from the second side 13 of the osteotomy main body 1, and the bone drill guide 3 is detachably connected to the guiding member 2. In such a structural form, the guiding member 2 protrudes from the osteotomy main body 1 towards the second side 13, and the bone drill guide 3 is disassembled and assembled through the guiding member 2. While minimizing interference with the bone tissue 600, the bone drill guide 3 has a relatively large installation depth, which is conducive to the bone drill guide 3 being more firmly installed on the guiding member 2.

[0079] In one embodiment, please refer to Figures 9 to 12 , and Figure 16 , the osteotomy main body 1 is at least penetrated within the region determined by extending along the guiding surface 21. In such a structural form, the osteotomy main body 1 is penetrated, and the osteotomy main body 1 is penetrated within the region determined by the extension of the guiding surface 21, that is, the osteotomy main body 1 has a surface that coincides with the plane where part of the guiding surface 21 is located. The guiding surface 21 of the guiding member 2 and the surface of the osteotomy main body 1 that coincides with the plane where part of the guiding surface 21 is located jointly guide the oscillating saw. In the direction from the second side 13 to the first side 12, the surface guiding the oscillating saw has a relatively large span, which is conducive to guiding the oscillating saw better.

[0080] It can be understood that the surface of the osteotomy main body 1 may not be in the same plane as the plane corresponding to the guiding surface 21.

[0081] In one embodiment, please refer to Figure 4 , Figure 9 , Figure 12 and Figure 13 , the guiding surface 21 includes a first guiding surface 21121 and a second guiding surface 21221, and the first guiding surface 21121 and the second guiding surface 21221 are arranged crosswise. By guiding the oscillating saw from two different directions through the first guiding surface 21121 and the second guiding surface 21221 respectively, it is conducive to the oscillating saw better separating the part to be cut off on the bone tissue 600 from the bone tissue 600.

[0082] It should be explained that the first guiding surface 21121 and the second guiding surface 21221 are arranged crosswise, that is, the first guiding surface 21121 and the second guiding surface 21221 are not parallel.

[0083] In one embodiment, referring to Figures 9 to 16 , the guiding member 2 includes a first guiding plate 22 and a mounting table 23. The first guiding plate 22 is connected to the osteotomy main body 1. The first guiding plate 22 protrudes from the second side 13 of the osteotomy main body 1, and a second guiding surface 21221 is formed on the first guiding plate 22. The mounting table 23 is arranged to protrude from the second side 13 of the osteotomy main body 1. The mounting table 23 is respectively connected to the first guiding plate 22 and the osteotomy main body 1. The second guiding surface 21221 is at least partially formed on the mounting table 23. The number of the mounting tables 23 is at least one, and the bone drill guide 3 is detachably connected to the guiding member 2 through at least one mounting table 23. With such a structural form, the first guiding plate 22 protrudes from the first side 12 of the osteotomy main body 1, and the degree to which the first guiding plate 22 protrudes from the osteotomy main body 1 towards the second side 13 is not limited by the bone tissue 600 and the osteotomy main body 1, so that the first guiding surface 21121 can have a relatively large span from the second side 13 to the first side 12, and the first guiding surface 21121 can better guide the oscillating saw. The mounting table 23 is arranged to protrude from the second side 13 of the osteotomy main body 1, and the degree to which the mounting table 23 protrudes from the osteotomy main body 1 towards the second side 13 is not limited by the bone tissue 600 and the osteotomy main body 1, so that the span of the second guiding surface 21221 from the first side 12 to the first side 12 can be set relatively large, and the second guiding surface 21221 can better guide the oscillating saw. The bone drill guide 3 is mounted on the protruding mounting table 23, and the degree to which the mounting table 23 protrudes from the osteotomy main body 1 towards the second side 13 is not limited by the bone tissue 600 and the osteotomy main body 1. While minimizing interference with the bone tissue 600, the bone drill guide 3 has a relatively large mounting depth, which is beneficial to the bone drill guide 3 being more firmly mounted on the guiding member 2. The bone drill guide 3 is mounted on the protruding mounting table 23, and the disassembly and assembly of the bone drill guide 3 have little impact on the first guiding plate 22, which is beneficial to the first guiding plate 22 maintaining better guiding accuracy.

[0084] It can be understood that the specific structural form of the guiding member 2 is not limited. Exemplarily, the guiding member 2 may not be provided with the first guiding plate 22. Exemplarily, the guiding member 2 may not be provided with the mounting table 23, and the bone drill guide 3 is detachably connected to the first guiding plate 22. Exemplarily, the guiding surface 21 is a plane.

[0085] It can be understood that there are certain dimensional limitations for the part of the bone tissue 600 that is cut off. The depth position of the part of the bone tissue 600 that is cut off should not be too deep, and it is necessary to prevent the depth position of the part of the bone tissue 600 that is cut off from being too close to the mounting opening 15 as much as possible.

[0086] In one embodiment, referring to Figure 10, the mounting platform 23 is located on the side of the plane where the first guide surface 21121 is located away from the mounting opening 15. In this structural form, the mounting opening 15 and the mounting platform 23 are respectively located on different sides of the plane where the first guide surface 21121 is located. The oscillating saw is attached to the first guide surface 21121 to perform osteotomy. The depth of the oscillating saw osteotomy is determined by the distance between the first guide surface 21121 and the mounting opening 15. The oscillating saw is guided by the first guide surface 21121, and the depth of the oscillating saw osteotomy can be well controlled. In addition, during the osteotomy process by the oscillating saw, the depth position of the part of the bone tissue 600 cut off is more important and needs to meet a relatively high guiding accuracy. The bone drill guide 3 is installed on the mounting platform 23, so that the bone drill guide 3 has less influence on the first guide plate 22 and the first guide surface 21121 formed on the first guide plate 22 during repeated disassembly and assembly, which is conducive to maintaining a high guiding accuracy of the first guide surface 21121, so as to more accurately control the depth position of the part of the bone tissue 600 cut off by the oscillating saw.

[0087] It is understandable that the positions of the mounting platform 23, the first guide surface 21121 and the mounting opening 15 are not limited and can be adjusted according to actual needs.

[0088] In one embodiment, please refer to Figures 9 to 16 The guide member 2 includes two mounting platforms 23, each of which is formed with a second guide surface 21221, and the two second guide surfaces 21221 are connected by a first guide surface 21121. The first guide surface 21121 and the second guide surface 21221 are used to enclose an osteotomy area 26, and the osteotomy area 26 extends from the second side 13 to the first side 12 along the feed direction. In this structural form, the two mounting platforms 23, each of which is formed with a second guide surface 21221, the first guide surface 21121 and the second guide surface 21221 are used to enclose an osteotomy area 26, and the osteotomy area 26 extends from the second side 13 to the first side 12 along the feed direction, and the oscillating saw passes through the osteotomy area 26 to cut off the bone tissue 600. The two second guide surfaces 21221 are connected by the first guide surface 21121, and the oscillating saw is successively attached to the two second guide surfaces 21221 so that the oscillating saw performs osteotomy under the guidance of the second guide surfaces 21221, which is conducive to separating the part of the bone tissue 600 between the two second guide surfaces 21221 from the bone tissue 600.

[0089] It should be noted that the two second guide surfaces 21221 are separated by the osteotomy area 26.

[0090] It should be noted that the osteotomy area 26 extends from the second side 13 to the first side 12 along the cutting direction, that is, the osteotomy area 26 penetrates the osteotomy body 1 along the cutting direction, so that the oscillating saw can pass through the osteotomy area 26 to cut off the bone tissue 600 .

[0091] It should be noted that the feed direction is the direction in which the oscillating saw or the bone drill 200 moves from the second side 13 to the first side 12 to perform osteotomy on the bone tissue 600.

[0092] It can be understood that the number of the mounting platforms 23 is not limited. Exemplarily, the number of the mounting platforms 23 can be one.

[0093] In one embodiment, please refer to Figure 14 、 Figure 15 、and Figure 17 , the device 100 further includes a baffle 4. The baffle 4 can be attached to the first guiding surface 21121, and the edges on both sides of the baffle 4 are respectively abutted against the two second guiding surfaces 21221. In such a structural form, during the process of osteotomy by the oscillating saw, the baffle 4 is in a state of being detached from the osteotomy main body 1. The oscillating saw can be first attached to the first guiding surface 21121 so that the oscillating saw performs osteotomy under the guidance of the first guiding surface 21121. The oscillating saw cuts a slot on the bone tissue 600 under the guidance of the first guiding surface 21121. The baffle 4 attached to the first guiding surface 21121 is inserted into the slot under the guidance of the first guiding surface 21121 and abuts against the second guiding surface 21221. Then, the oscillating saw is attached to the second guiding surface 21221 so that the oscillating saw performs osteotomy under the guidance of the second guiding surface 21221. Since the baffle 4 abuts against the second guiding surface 21221, the oscillating saw attached to the second guiding surface 21221 will abut against the baffle 4 when the osteotomy reaches a certain depth. The baffle 4 blocks the oscillating saw, making it difficult for the depth of the oscillating saw osteotomy to continue to increase. Therefore, by the baffle 4 abutting against the second guiding surface 21221, the depth of the oscillating saw osteotomy can be limited to the position blocked by the baffle 4 to a certain extent, thereby more accurately defining the depth of the oscillating saw osteotomy.

[0094] In one embodiment, please refer to Figure 4 、 Figure 12 、 Figure 14 、 Figure 15 and Figure 17, the first guide plate 22 is formed with two parallel guide grooves 221 which are opened along the feed direction. The baffle 4 includes two sub-plates 41. The sub-plates 41 are provided with guide rails 411. The guide rails 411 of each sub-plate 41 are respectively engaged with a guide groove 221, so that each sub-plate 41 is detachably mounted on the first guide plate 22 in the feed direction. And when the guide rail 411 of the sub-plate 41 is located in the corresponding guide groove 221, each sub-plate 41 has a side edge which abuts against the corresponding second guide surface 21221. In such a structural form, with the guide rail 411 located in the guide groove 221 and the guide rail 411 being engaged with the guide groove 221, the first guide plate 22 guides the guide rail 411 in the guide groove 221 and restricts the positions on both sides of the sub-plate 41, enabling the sub-plate 41 to abut against the second guide surface 21221. For devices 100 for intercondylar osteotomy of different models, the distance between the two second guide surfaces 21221 will be different. During the manufacturing process of the device 100 for intercondylar osteotomy, for different distances between the two second guide surfaces 21221, while keeping the distance between the guide groove 221 and the second guide surface 21221 unchanged, the distance between the two guide grooves 221 is changed. In this way, when the original two sub-plates 41 are inserted into the guide grooves 221, they can still abut against the corresponding second guide surfaces 21221 to limit the depth position of the oscillating saw for osteotomy, and the distance between the two sub-plates 41 inserted into the guide grooves 221 is changed. Therefore, the baffle 4 including two sub-plates 41 can be adapted to various models of devices 100 for intercondylar osteotomy with different distances between the second guide surfaces 21221, which is beneficial to improving the versatility of the baffle 4.

[0095] It can be understood that according to the different distances between the two guide grooves 221, the two sub-plates 41 can abut against each other or be arranged at intervals. Each sub-plate 41 is an independent component.

[0096] It can be understood that the specific structural form of the baffle 4 is not limited. The baffle 4 can be a single integral plate.

[0097] In one embodiment, please refer to Figures 11 to 16 , and Figure 18 and Figure 19, the bone drill guide 3 is connected to the osteotomy main body 1 through the mounting platform 23. Each mounting platform 23 is respectively formed with a mounting hole 231. The bone drill guide 3 has a mounting rod 31 that is installed and fitted with the mounting hole 231, and the shape and size of each mounting hole 231 are respectively adapted to the corresponding mounting rod 31. In such a structural form, among the two mounting platforms 23, each mounting platform 23 has a mounting hole 231, and each mounting hole 231 has a mounting rod 31 with a corresponding shape and size adapted thereto. The bone drill guide 3 is installed on the two mounting platforms 23 through the corresponding mounting rods 31, and the bone drill guide 3 is supported by the two mounting platforms 23, so that the bone drill 200 is more balanced in force, which is beneficial to the relatively stable installation of the bone drill guide 3 on the mounting platform 23. Through the insertion of the mounting rod 31 into the mounting hole 231 for installation, the mounting platform 23 can better support the mounting rod 31 extending into the mounting hole 231, and the bone drill guide 3 can be more firmly installed on the mounting platform 23.

[0098] It can be understood that the connection method between the bone drill guide 3 and the mounting platform 23 is not limited. Exemplarily, the bone drill guide 3 and the mounting platform 23 can be connected by bolts or snap connections, etc.

[0099] It can be understood that the number of mounting platforms 23 connected to the bone drill guide 3 is not limited. Exemplarily, the number of mounting platforms 23 connected to the bone drill guide 3 can be one.

[0100] In one embodiment, please refer to Figures 11 to 16 , and Figure 18 and Figure 19 , the sizes and / or cross-sectional shapes of the mounting holes 231 on both sides of the osteotomy area 26 are different. In such a structural form, since the sizes and / or cross-sectional shapes of the mounting holes 231 on both sides are different, it is difficult for the mounting rod 31 adapted to one side of the mounting hole 231 to fit the mounting hole 231 on the other side, which is beneficial to preventing the reverse installation of the bone drill guide 3.

[0101] It can be understood that the structure of the mounting holes 231 on both sides of the osteotomy area 26 is not limited. Exemplarily, the mounting holes 231 on both sides of the osteotomy area 26 can be the same holes, and the mounting rod 31 adapted to one side of the mounting hole 231 can fit the mounting hole 231 on the other side.

[0102] In one embodiment, please refer to Figure 11 , Figure 12 , Figure 18 and Figure 19, at least one mounting platform 23 is formed with a locking hole 232 communicating with the corresponding mounting hole 231. The locking hole 232 is located at one end of the corresponding mounting hole 231 facing the constraint surface 11. The locking hole 232 is formed on the side wall of the mounting hole 231, and the extending direction of the locking hole 232 is arranged crosswise with respect to the extending direction of the mounting hole 231. The bone drill guide 3 includes a guide body 32 and a locking device 33100 provided on the guide body 32. The mounting rod 31 is formed on the guide body 32. The locking device 33100 has a locking portion 331. When the locking device 33100 follows the corresponding mounting rod 31 and moves into the mounting hole 231, the locking portion 331 can move into the locking hole 232 under the action of elastic force. The locking portion 331 can move out of the locking hole 232 against the elastic force under the action of an external force so that the mounting rod 31 and the locking device 33100 can be disengaged from the mounting hole 231. In such a structural form, when the locking portion 331 moves into the locking hole 232 under the action of elastic force, since the extending direction of the locking hole 232 is arranged crosswise with respect to the extending direction of the mounting hole 231, the direction in which the locking portion 331 exits the locking hole 232 is inconsistent with the direction in which the locking device 33100 exits the mounting hole 231, and the locking device 33100 cannot exit the mounting hole 231. Thus, the bone drill guide 3 is locked to the mounting platform 23 through the locking device 33100. When the locking portion 331 moves out of the locking hole 232 against the elastic force under the action of an external force, the locking device 33100 can move axially along the mounting hole 231 as a whole, so that both the locking device 33100 and the mounting rod 31 can be disengaged from the mounting hole 231, realizing the removal of the bone drill guide 3 from the mounting platform 23. Through the cooperation between the locking portion 331 of the locking device 33100 and the locking hole 232, the disassembly and assembly between the bone drill guide 3 and the mounting platform 23 can be realized more conveniently.

[0103] It can be understood that the elastic force received by the locking portion 331 can originate from the locking device 33100 itself. For example, the material of the locking device 33100 is a material with a certain elasticity.

[0104] It can be understood that an elastic member can also be provided between the locking device 33100 and the guide body 32. The elastic member is in contact with the locking device 33100 and the guide body 32 respectively, and the elastic force is applied to the locking portion 331 of the locking device 33100 through the elastic member.

[0105] It should be noted that the extending direction of the locking hole 232 and the extending direction of the mounting hole 231 are arranged crosswise, that is, the extending direction of the locking hole 232 is not parallel to the extending direction of the mounting hole 231.

[0106] Exemplarily, please refer to Figure 11 and Figure 12 , the extending direction of the locking hole 232 is perpendicular to the extending direction of the mounting hole 231.

[0107] Exemplarily, each mounting platform 23 is formed with a locking hole 232.

[0108] It can be understood that the specific structure for locking the mounting rod 31 to the mounting platform 23 is not limited. Exemplarily, a pin shaft can pass through the mounting platform 23 and the mounting rod 31 located in the mounting hole 231 to achieve the locking between the bone drill guide 3 and the mounting platform 23. The pin shaft can be pulled out from the mounting platform 23, and the mounting rod 31 can move along the axial direction of the mounting hole 231 to move the mounting rod 31 out of the mounting hole 231, so as to achieve the removal of the bone drill guide 3 from the mounting platform 23.

[0109] It can be understood that for the osteotomy method using the bone drill 200, an osteotome 300 is required to further perform osteotomy on the bone tissue 600 on the basis of the osteotomy by the bone drill 200.

[0110] In one embodiment, please refer to Figure 4 , Figures 9 to 11 , and Figure 13, the guide member 2 further includes a second guide plate 24. The second guide plate 24 is respectively connected to the mounting platforms 23 on both sides of the osteotomy region 26. The second guide plate 24 is located on the side of the plane where the first guide surface 21121 is located away from the mounting opening 15. The second guide plate 24 is arranged opposite to the first guide plate 22. The first guide plate 22, the second guide plate 24 and the two second guide surfaces 21221 jointly enclose the osteotomy region 26 for guiding the osteotome 300. In such a structural form, in the method of osteotomy by the bone drill 200, after the bone drill guide 3 is installed on the mounting platform 23 and the bone drill 200 is guided by the bone drill guide 3 for osteotomy, it is still necessary to further osteotomize the bone tissue 600 after osteotomy by the bone drill 200 through the osteotome 300. The osteotome 300 passes through the region enclosed by the first guide plate 22, the second guide plate 24 and the two second guide surfaces 21221 for osteotomy. By the first guide plate 22, the second guide plate 24 and the two second guide surfaces 21221 respectively fitting with the outer surface of the osteotome 300, the osteotome 300 is guided. The outer surfaces of the osteotome 300 that respectively fit with the first guide plate 22 and the two second guide surfaces 21221 are the limit positions of the bone tissue 600 to be osteotomized by the osteotome 300. When the osteotome 300 passes through the region enclosed by the first guide plate 22, the second guide plate 24 and the two second guide surfaces 21221 for osteotomy, the region of the bone tissue 600 to be osteotomized is approximately the region enclosed by the outer surfaces of the osteotome 300 that respectively fit with the first guide plate 22 and the two second guide surfaces 21221. By the outer surfaces of the osteotome 300 that respectively fit with the first guide plate 22 and the two second guide surfaces 21221 to guide the osteotome 300, the surfaces of the osteotome 300 for guiding and the surfaces corresponding to the limit positions of the bone tissue 600 to be osteotomized by the osteotome 300 are basically the same surface. The wall thickness of the osteotome 300 is not restricted by the surfaces for guiding the osteotome 300 and the surfaces corresponding to the limit positions of the bone tissue 600 to be osteotomized by the osteotome 300. The wall thickness of the osteotome 300 can be set according to actual needs, so that the cutting edge of the osteotome 300 has better sharpness. The second guide plate 24 is respectively connected to the mounting platforms 23 on both sides of the osteotomy region 26. By the second guide plate 24 supporting the two mounting platforms 23 along the arrangement direction of the two mounting platforms 23, it is beneficial to increase the strength of the mounting platforms 23.

[0111] Exemplarily, please refer to Figure 13 , after the bone drill 200 is guided by the bone drill guide 3 for osteotomy, the bone drill guide 3 can be removed, and the osteotome 300 is guided by the first guide plate 22, the second guide plate 24 and the two second guide surfaces 21221 together for osteotomy.

[0112] It can be understood that the cross-section of the osteotome 300 is generally in a U-shaped structure.

[0113] In one embodiment, please refer to Figure 11 and Figure 13, a protruding foolproof rib 241 is formed on the side of the second guide plate 24 facing the first guide plate 22. With such a structural form, when the osteotome 300 passes through the area surrounded by the first guide plate 22, the second guide plate 24 and the two second guide surfaces 21221 to perform osteotomy, the opening of the U-shaped cross section of the osteotome 300 faces the second guide plate 24, and the protruding foolproof rib 241 on the second guide plate 24 is located in the opening of the U-shaped cross section of the osteotome 300, and the osteotome 300 will not interfere with the foolproof rib 241, and the osteotome 300 can smoothly pass through the area surrounded by the first guide plate 22, the second guide plate 24 and the two second guide surfaces 21221. When the opening of the U-shaped section of the osteotome 300 is not facing the second guide plate 24, during the process of the osteotome 300 passing through the area surrounded by the first guide plate 22, the second guide plate 24 and the two second guide surfaces 21221, the outer surface of the osteotome 300 that should be in contact with the first guide surface 21121 and the second guide surface 21221 will interfere with the foolproof rib 241, making it impossible for the osteotome 300 to pass through. Therefore, the foolproof rib 241 can make the osteotome 300 pass through as much as possible with the opening of the U-shaped section facing the second guide plate 24, thereby preventing the osteotome 300 from being mis-installed to a certain extent.

[0114] In one embodiment, please refer to Figures 19 to 22 The bone drill guide 3 is formed with a boss, a guide portion 35 and an avoidance area 36. The guide boss 34 is used to guide the bone drill 200 for osteotomy. The avoidance area 36 is opened along the feed direction. The guide portion 35 is located on the side of the guide boss 34 away from the first guide plate 22. The first guide plate 22, the guide portion 35 and the avoidance area 36 are used together to guide the bone chisel 300. With such a structural form, the bone drill guide 3 is mounted on the mounting table 23, and the boss of the bone drill guide 3 guides the bone drill 200 to move to perform osteotomy on the bone tissue 600. After the bone drill 200 performs osteotomy, the bone drill guide 3 does not need to be removed, and the avoidance area 36 on the bone drill guide 3 can avoid the osteotome 300. The opening of the U-shaped cross section of the osteotome 300 faces the guide portion 35, and the osteotome 300 passes through the avoidance area 36. The boss is located in the U-shaped cavity of the osteotome 300. The osteotome 300 moves under the joint guidance of the first guide plate 22, the guide portion 35 and the avoidance area 36 to perform osteotomy on the bone tissue 600. The embodiment of the present application provides the boss, the guide portion 35 and the avoidance area 36, ​​and osteotomy is performed by the osteotome 300 without disassembling the bone drill guide 3.

[0115] For example, see Figure 12 ,as well as Figures 19 to 22 When the bone drill guide 3 is formed with a boss, a guide portion 35 and an escape area 36, ​​the first guide plate 22, the guide portion 35 and the escape area 36 are used together to guide the osteotome 300, and the guide member 2 may not be provided with the second guide plate 24.

[0116] Exemplarily, please refer to Figure 19 and Figure 20 , a boss, a guiding portion 35, and an avoidance area 36 are all formed on the guide body 32.

[0117] In one embodiment, please refer to Figures 19 to 22 , avoidance areas 36 are provided on both opposite sides of the boss, and the two avoidance areas 36 are arranged along the arrangement direction of the two mounting platforms 23. The wall surface of each avoidance area 36 includes a first guiding surface 361 and a second guiding surface 362 which are arranged crosswise. The two second guiding surfaces 362 on both sides are located between the two first guiding surfaces 361 along the arrangement direction of the two mounting platforms 23. The second guiding surface 362 is formed on the guiding boss 34. The guiding boss 34 protrudes from the first guiding surface 361 toward the side of the first guiding surface 21121 along the first guiding surface 361. Both the first guiding surface 361 and the guiding boss 34 are located on the side of the plane where the first guiding surface 21121 is located and away from the mounting opening 15. In such a structural form, the osteotome 300 is guided jointly by the first guiding surface 361, the first guiding surface 21121, and the two second guiding surfaces 362 on both sides. When the osteotome 300 passes through the avoidance area 36, the first guiding surface 21121 and the first guiding surface 361 are respectively attached to the outer surface of the osteotome 300 to guide the osteotome 300, and the inner surface of the U-shaped cavity of the osteotome 300 is attached to the two second guiding surfaces 362 on both sides to guide the osteotome 300. The osteotome 300 is guided jointly by the first guiding surface 361, the second guiding surface 362, and the first guiding surface 21121. The osteotome 300 performs osteotomy on the bone tissue 600 under the guidance of the first guiding surface 361, the second guiding surface 362, and the first guiding surface 21121. For the bone drill guide 3 of the same model, the distance between the two second guiding surfaces 362 is constant. By using the second guiding surface 362 to be attached to the inner surface of the U-shaped cavity of the osteotome 300 for guiding, by changing the wall thickness of the osteotome 300, that is, the position of the outer surface of the osteotome 300 can be changed, and correspondingly, the limit position of the bone tissue 600 osteotomized by the osteotome 300 will also change, so that a bone drill guide 3 of one model can be adapted to multiple osteotomes 300 of different models.

[0118] Exemplarily, please refer to Figures 19 to 22 , the first guiding surface 361 is formed on the guiding portion 35.

[0119] In one embodiment, please refer to Figures 9 to 16The guide member 2 further includes a guide platform 25, which is connected to the mounting platform 23 and the osteotomy body 1 respectively, and the guide platform 25 protrudes from the second side 13 of the osteotomy body 1. The guide platform 25 is located on the side of the plane where the first guide surface 21121 is located away from the mounting opening 15, and the second guide surface 21221 is arranged across the mounting platform 23 and the guide platform 25. In such a structural form, the second guide surface 21221 is arranged across the mounting platform 23 and the guide platform 25, and the second guide surface 21221 has a larger guiding range. The second guide surface 21221 can guide the oscillating saw within a larger range so that the oscillating saw can perform osteotomy. By adapting the mounting platform 23 to the installation of the bone drill guide 3, the guide platform 25 does not need to adapt to the bone drill guide 3, and the degree of the guide platform 25 protruding from the osteotomy body 1 can be determined according to actual needs, which can reduce the space occupied by the device 100 for intercondylar osteotomy as much as possible while meeting the guiding requirements for the oscillating saw.

[0120] For example, see Figures 9 to 11 The degree to which the mounting platform 23 protrudes from the second side 13 of the osteotomy body 1 is greater than the degree to which the guide platform 25 protrudes from the second side 13 of the osteotomy body 1. Figures 9 to 11 The surface of the guide platform 25 facing away from the osteotomy body 1 is the target surface 251, the guide platform 25 is located between the target surface 251 and the osteotomy body 1, and the mounting platform 23 is at least partially located on the side of the target surface 251 facing away from the osteotomy body 1.

[0121] It is understandable that after the osteotomy is completed, the device 100 for intercondylar osteotomy needs to be removed from the bone tissue 600 and then a corresponding prosthesis is implanted.

[0122] For example, see Figure 8 After the device 100 for intercondylar osteotomy is removed from the bone tissue 600, a femoral condylar prosthesis 700 is implanted. The femoral condylar prosthesis 700 has an intercondylar box 701 and a column 702. The area cut off from the bone tissue 600 by the oscillating saw or the bone drill 200 can be used to accommodate the intercondylar box 701 of the implanted femoral condylar prosthesis 700.

[0123] For example, see Figure 7 As shown in the figure, the bone tissue 600 is cut to form a receiving space 603 for accommodating the intercondylar box 701.

[0124] In one embodiment, please refer to Figures 5 to 7 , Figure 9 ,as well as Figure 11 and Figure 12, the bone tissue 600 is a femur with a bone condyle 602. The device 100 for intercondylar osteotomy further has a positioning hole 5 that penetrates through the guiding platform 25 and the osteotomy main body 1. The positioning hole 5 is used to determine the three-dimensional position of the femoral condyle prosthesis 700 relative to the femur. In such a structural form, the positioning hole 5 penetrates through the guiding platform 25 and the osteotomy main body 1. The corresponding drill bit extends into the positioning hole 5 to drill a hole in the bone tissue 600. The hole drilled in the bone tissue 600 through the positioning hole 5 is used to accommodate the column 702 of the implanted femoral condyle prosthesis 700. The femoral condyle prosthesis 700 is positioned relative to the bone tissue 600 by inserting the column 702 into the hole drilled in the bone tissue 600.

[0125] It can be understood that the human femur has left and right sides, and the contour of the positioning surface 601 on the left femur that cooperates with the constraint surface 11 is different from the contour of the positioning surface 601 on the right femur that cooperates with the constraint surface 11.

[0126] In one embodiment, please refer to Figures 9 to 16, the osteotomy main body 1 includes a first restraint member 16 and a second restraint member 17, and the first restraint member 16 and the second restraint member 17 are used to at least partially form a restraint surface 11. The bone tissue 600 enters the accommodation cavity 14 through the installation opening 15 along the first direction. For the osteotomy main body 1 of this embodiment, it has a certain width to adapt to the volume of the bone tissue to be processed. In the width direction, each of the first restraint member 16 and the second restraint member 17 has a free end, and the position where the free end is relatively vacant forms the above-mentioned installation opening 15. Considering the changes in the actual operation environment, the above-mentioned first direction is preferably perpendicular to the width direction, but a certain range of errors is also allowed in this embodiment. The second restraint member 17 has a first inspection window 171 and a second inspection window 172. The outer contour of the second restraint member 17 includes a first contour 173 and a second contour 174. The first contour 173 and the second contour 174 are preferably distributed along the width direction, facing the installation opening 15. The first inspection window 171 and the second inspection window 172 are preferably distributed along the width direction and respectively correspond to the first contour 173 and the second contour 174. The contour of the first inspection window 171 includes a third contour 1711 corresponding to the first contour 173, and the contour of the second inspection window 172 includes a fourth contour 1721 corresponding to the second contour 174. Moreover, the first contour 173 and the third contour 1711 are used to determine the position of the second restraint member 17 relative to the bone tissue 600, or the second contour 174 and the fourth contour 1721 are used to determine the position of the second restraint member 17 relative to the bone tissue 600. In such a structural form, the first contour 173 and the third contour 1711 are jointly used to detect the contour of the positioning surface 601 of one of the left femur or the right femur. When the first contour 173 and the third contour 1711 match the contour of the positioning surface 601 of one of the left femur or the right femur, the positioning of the second restraint member 17 relative to the bone tissue 600 is achieved, and the osteotomy main body 1 is located at a more appropriate position on the bone tissue 600. The second contour and the fourth contour 1721 are jointly used to detect the contour of the positioning surface 601 of the other of the left femur or the right femur. When the second contour 174 and the fourth contour 1721 match the contour of the positioning surface 601 of the other of the left femur or the right femur, the positioning of the second restraint member 17 relative to the bone tissue 600 is achieved, and the osteotomy main body 1 is located at a more appropriate position on the bone tissue 600. Through the first contour 173 and the third contour 1711 and the second contour 174 and the fourth contour 1721, a device 100 for intercondylar osteotomy can be adapted to perform osteotomy on both the left femur and the right femur.

[0127] It should be noted that the first contour 173 and the second contour 174, and the first inspection window 171 and the second inspection window 172 are arranged side by side perpendicular to the first direction, which means that the first contour 173 and the second contour 174 are arranged side by side perpendicular to the first direction, and the first inspection window 171 and the second inspection window 172 are arranged side by side perpendicular to the first direction.

[0128] Please refer to Figure 4 and Figure 7 , the first direction is the direction indicated by the arrow R1 in the figure.

[0129] Exemplarily, the first contour 173 and the third contour 1711 are used to fit with the positioning surface 601 on the left femur, and the second contour 174 and the fourth contour 1721 are used to fit with the positioning surface 601 on the right femur.

[0130] Exemplarily, the first contour 173 and the third contour 1711 are used to fit with the positioning surface 601 on the right femur, and the second contour 174 and the fourth contour 1721 are used to fit with the positioning surface 601 on the left femur.

[0131] Exemplarily, please refer to Figure 9 , Figure 11 and Figure 13 , the number of the first constraints 16 is two, and the two first constraints 16 are arranged at intervals. The second constraint 17 is respectively connected to the two first constraints 16, and the constraint surface 11 straddles the first constraint 16 and the second constraint 17. The arrangement direction of the first contour 173 and the second contour 174 is the same as the arrangement direction of the two first constraints 16. The arrangement direction of the first inspection window 171 and the second inspection window 172 is the same as the arrangement direction of the two first constraints 16. In the arrangement direction of the two first constraints 16, the direction from the first contour 173 to the second contour 174 is opposite to the direction from the first inspection window 171 to the second inspection window 172.

[0132] Exemplarily, please refer to Figure 4 , each first constraint 16 cooperates with the second constraint 17 to constrain the corresponding condyle 602.

[0133] Exemplarily, please refer to Figure 4 , the two first constraints 16 are arranged side by side perpendicular to the first direction.

[0134] Exemplarily, please refer to Figures 11 to 13 , and Figure 15 , each first constraint 16 has a surface that coincides with the plane where the second guiding surface 21221 is located.

[0135] Exemplarily, please refer to Figure 10, among the five sub - surfaces 111 of the constraint surface 11, one sub - surface 111 is formed on the second constraint member 17, and the remaining four sub - surfaces 111 are formed on the first constraint member 16. Among the four sub - surfaces 111 formed on the first constraint member 16, each sub - surface 111 straddles two first constraint members 16.

[0136] It can be understood that due to individual differences among patients, the maximum span between the two bone condyles 602 of the bone tissue 600 can be different, and correspondingly, the contour positions of the positioning surfaces 601 on the bone tissue 600 will also be different.

[0137] In one embodiment, please refer to Figures 1 to 4 , Figure 9 , Figure 11 and Figure 12 , a viewing notch 161 is formed on the first constraint member 16. The viewing notch 161 is used to view the dimensional length of the bone tissue 600 in the direction perpendicular to the first direction. In such a structural form, when the outermost contours on both sides of the first constraint member 16 in the direction perpendicular to the first direction coincide with the contour of the positioning surface 601 of the bone tissue 600, the maximum span between the two bone condyles 602 of the bone tissue 600 is smaller, which is suitable for implanting a narrow - sized prosthesis. When the contour of the first constraint member 16 at the notch coincides with the contour of the positioning surface 601 of the bone tissue 600, the maximum span between the two bone condyles 602 of the bone tissue 600 is larger, which is suitable for implanting a wide prosthesis. By providing the viewing notch 161 on the first constraint member 16, the device 100 for inter - condylar osteotomy can be adapted to position bone tissues 600 with different spans between the bone condyles 602, improving the versatility of the device 100 for inter - condylar osteotomy.

[0138] In one embodiment, please refer to Figures 18 to 22 , the bone drill guide 3 has an arc surface 37 for guiding the bone drill 200 for osteotomy. Along the central axis of the arc surface 37, the osteotomy main body 1 is disposed through - hole, so that when the bone drill 200 processes the bone tissue 600, it will not be blocked by the osteotomy main body 1. In such a structural form, the arc surface 37 on the bone drill guide 3 is used to guide the bone drill 200, and the bone drill 200 moves generally along the central axis of the arc surface 37 to perform osteotomy on the bone tissue 600. Since the osteotomy main body 1 is disposed through - hole along the central axis of the arc surface 37, the bone drill 200 moving along the central axis of the arc surface 37 can smoothly pass through the osteotomy main body 1 to perform osteotomy on the bone tissue 600.

[0139] It can be understood that the inter - condylar box 701 of some femoral condyle prostheses 700 has a longer dimension in the direction intersecting with the length direction of the femur. Correspondingly, in the direction intersecting with the length direction of the femur, the corresponding dimension of the bone mass needs to be cut off.

[0140] In one embodiment, please refer to Figure 1 , andFigures 18 to 22 , the central axis of the arc surface 37 extends from the first side 12 of the osteotomy main body 1 to the second side 13 of the osteotomy main body 1 in two opposite directions. In such a structural form, the bone drill 200 can drill in a direction substantially crossing the length direction of the femur for osteotomy. By one drilling of the bone drill 200 in a direction substantially crossing the length direction of the femur, the bone mass corresponding to the size of the intercondylar box 701 can be cut off in a direction crossing the length direction of the femur. The operation is convenient and is suitable for osteotomy of the femur for accommodating the intercondylar box 701 with a longer size.

[0141] It should be noted that the central axis of the arc surface 37 extends from the first side 12 of the osteotomy main body 1 to the second side 13 of the osteotomy main body 1 in two opposite directions, that is, the osteotomy main body 1 is axially disposed across the opposite sides of the accommodating area along the axis of the bone drill 200.

[0142] It can be understood that the arrangement mode of the central axis of the arc surface 37 is not limited, and the central axis of the arc surface 37 can be arranged according to actual needs.

[0143] It can be understood that, please refer to Figure 4 , Figure 9 and Figure 10 , the femur enters the accommodating cavity 14 through the mounting opening 15 along the first direction, and the length direction of the femur is substantially arranged along the first direction.

[0144] The second direction of the embodiment of the present application provides an osteotomy assembly. Please refer to Figures 1 to 3 , the osteotomy assembly includes a bone drill 200, a reciprocating saw for osteotomy, and the device 100 for intercondylar osteotomy in any of the above embodiments. The reciprocating saw performs osteotomy under the guidance of the guiding surface 21, and the bone drill 200 performs osteotomy under the guidance of the bone drill guide 3.

[0145] In one embodiment, please refer to Figure 23 and Figure 24, the bone drill 200 has adjustment slots 201 arranged at intervals along the axial direction of the bone drill 200. The osteotomy assembly further includes a limiting ring 400 sleeved on the bone drill 200 and a locking device 500 arranged on the limiting ring 400. The locking device 500 can partially be located in the adjustment slot 201 to lock the limiting ring 400 relative to the bone drill 200 at a corresponding position, and the locking device 500 can be disengaged from the adjustment slot 201 so that the limiting ring 400 can move relative to the bone drill 200. In such a structural form, the bone drill 200 moves from the second side 13 to the first side 12 of the osteotomy main body 1 under the guidance of the bone drill guide 3 to perform osteotomy on the bone tissue 600. The limiting ring 400 can abut against the bone drill guide 3 to limit the depth of the bone drill 200 moving from the second side 13 to the first side 12. When the locking device 500 is disengaged from the adjustment slot 201, the limiting ring 400 can move relative to the bone drill 200 to adjust the position of the limiting ring 400 on the bone drill 200, thereby changing the depth of insertion of the bone drill 200 when the limiting ring 400 abuts against the bone drill guide 3. The locking device 500 is partially inserted into the adjustment slot 201 to lock the limiting ring 400 at the adjusted position.

[0146] Exemplarily, the locking device 500 can be partially held in the adjustment slot 201 by the elastic force of the locking device 500 itself so that the limiting ring 400 is held at the adjusted position.

[0147] Exemplarily, an elastic member can be arranged between the limiting ring 400 and the locking device 500. The elastic member is in contact with the limiting ring 400 and the locking device 500 respectively. The locking device 500 is partially held in the adjustment slot 201 by the elastic force of the elastic member so that the limiting ring 400 is held at the adjusted position.

[0148] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made 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 device for intercondylar osteotomy, It is characterized in that The device comprises: An osteotomy body having a constraint surface, the constraint surface being located on a first side of the osteotomy body, the constraint surface being arranged to form an accommodating cavity and a mounting opening communicating with the accommodating cavity, the mounting opening being used to accommodate the passage of bone tissue to be processed so that the bone tissue is at least partially located in the accommodating cavity, and the constraint surface being used to at least partially contact the bone tissue, and the constraint surface being used to constrain the position of the osteotomy body relative to the bone tissue; A guide member is arranged on a second side of the osteotomy body away from the constraint surface, the guide member having a guide surface, and the guide surface is used to make the oscillating saw perform osteotomy on the bone tissue located in the osteotomy body along the direction determined by the guide surface; The bone drill guide is detachably connected to the guide member and / or the osteotomy body and is used to determine the bone drill guide so as to perform osteotomy on the bone tissue located in the osteotomy body.

2. The device according to claim 1, It is characterized in that The guide surface includes a first guide surface and a second guide surface, and the guide member includes: A first guide plate connected to the osteotomy body, the first guide plate protruding from the second side of the osteotomy body, the first guide surface formed on the first guide plate; A mounting platform, wherein the mounting platform is arranged to protrude from the second side of the osteotomy body and is respectively connected to the first guide plate and the osteotomy body, the second guide surface is at least partially formed on the mounting platform, the second guide surface is arranged crosswise with the first guide surface, the number of the mounting platforms is at least one, and the bone drill guide is detachably connected to the guide member through at least one of the mounting platforms.

3. The device according to claim 2, It is characterized in that The guide member includes two mounting platforms, the second guide surface is at least partially formed on each of the mounting platforms, the two second guide surfaces are connected by the first guide surface, and the first guide surface and the two second guide surfaces are used to enclose an osteotomy area, which extends from the second side to the first side along the feed direction of the oscillating saw or bone drill.

4. The device according to claim 3, It is characterized in that The device further comprises a baffle, wherein the baffle is in contact with the first guide surface, and edges on both sides of the baffle are respectively in contact with the two second guide surfaces.

5. The device according to claim 4, It is characterized in that Two parallel guide grooves are formed on the first guide plate, and the guide grooves are opened along the feed direction. The baffle includes two sub-plates, each of which has a guide rail, and the guide rail cooperates with the guide groove so that each sub-plate can be detachably installed with the first guide plate in the feed direction, and when the guide rail of the sub-plate is located in the corresponding guide groove, each sub-plate has a side edge that abuts against the corresponding second guide surface.

6. The device according to claim 3, It is characterized in that The bone drill guide is connected to the osteotomy body through the mounting platform, a mounting hole is formed on the mounting platform, the bone drill guide has a mounting rod for mounting and matching with the mounting hole, and the shape and size of each mounting hole are respectively adapted to the corresponding mounting rod.

7. The device according to claim 6, It is characterized in that The mounting holes on both sides of the osteotomy area have different sizes and / or different cross-sectional shapes.

8. The device according to claim 6, It is characterized in that At least one of the mounting platforms is formed with a locking hole communicating with the corresponding mounting hole, the locking hole is located at one end of the corresponding mounting hole facing the constraint surface, the locking hole is formed on a side wall of the mounting hole, and an extension direction of the locking hole is arranged crosswise with an extension direction of the mounting hole; The bone drill guide includes a guide body and a locking device arranged on the guide body, the mounting rod is formed on the guide body, and the locking device has a locking portion. When the locking device follows the corresponding mounting rod and moves into the mounting hole, the locking portion can move into the locking hole under the action of elastic force, and the locking portion can overcome the elastic force and move out of the locking hole under the action of external force so that the mounting rod and the locking device can be separated from the mounting hole.

9. The device according to claim 3, It is characterized in that The guide member also includes a second guide plate, which is respectively connected to the mounting platforms on both sides of the osteotomy area, and the second guide plate is located on the side of the plane where the first guide surface is located away from the mounting opening. The second guide plate is arranged opposite to the first guide plate, and the first guide plate, the second guide plate and the two second guide surfaces jointly enclose the osteotomy area for guiding the osteotome.

10. The device according to claim 9, It is characterized in that A protruding anti-foolproof rib is formed on one side of the second guide plate facing the first guide plate.

11. The device according to claim 3, It is characterized in that The bone drill guide is formed with a guide boss, a guide portion and an avoidance area, the guide boss is used to guide the bone drill for osteotomy, the avoidance area is opened along the feed direction, the guide portion is located on the side of the guide boss away from the first guide plate, and the first guide plate, the guide portion and the avoidance area are used together to guide the bone chisel.

12. The device according to claim 2, It is characterized in that The guide member also includes a guide platform, which is respectively connected to the mounting platform and the osteotomy body, the guide platform protrudes from the second side of the osteotomy body, the guide platform is located on the side of the plane where the first guide surface is located away from the mounting port, and the second guide surface is arranged across the mounting platform and the guide platform.

13. The device according to claim 12, It is characterized in that The bone tissue is a femur with condyles, and the device further has a positioning hole, which passes through the guide platform and the osteotomy body, and is used to determine the position of a column of a femoral condyle prosthesis relative to the femur.

14. The device according to claim 1, It is characterized in that The osteotomy body also includes: a first restraining member and a second restraining member, the first restraining member and the second restraining member being used to at least partially form the restraining surface; The second restraining member has a first inspection window and a second inspection window, the second restraining member includes a free end, and the outer contour of the free end includes a first contour and a second contour; the first inspection window and the second inspection window are arranged side by side along a direction from the first contour to the second contour; The outline of the first inspection window includes a third outline corresponding to the first outline, and the outline of the second inspection window includes a fourth outline corresponding to the second outline; Furthermore, the first contour and the third contour are used to determine the position of the second constraint relative to the bone tissue, or, The second contour and the fourth contour are used to determine the position of the second constraint relative to the bone tissue.

15. The device according to claim 14, It is characterized in that An inspection notch is formed on the first restraint member, and the inspection notch is used to inspect the length of the bone tissue relative to the width of the osteotomy body.

16. The device according to any one of claims 1 to 15, It is characterized in that The osteotomy body is disposed through at least a region defined along the extension of the guide surface.

17. The device according to any one of claims 1 to 15, It is characterized in that The bone drill guide has an arc surface for guiding the bone drill for osteotomy, and the osteotomy body is arranged through the central axis of the arc surface so that the bone drill will not be blocked by the osteotomy body when processing the bone tissue.

18. An osteotomy assembly, It is characterized in that The device comprises a bone drill, an oscillating saw for osteotomy and a device according to any one of claims 1 to 17, wherein the oscillating saw performs osteotomy under the guidance of the guide surface, and the bone drill performs osteotomy under the guidance of the bone drill guide.

19. The osteotomy assembly according to claim 18, It is characterized in that The bone drill has adjustment grooves arranged in sequence and at intervals along the axial direction of the bone drill. The osteotomy assembly also includes a limiting ring sleeved on the bone drill and a locker arranged on the limiting ring. The locker can be partially located in the adjustment groove to lock the limiting ring in a corresponding position relative to the bone drill, and the locker can be disengaged from the adjustment groove to enable the limiting ring to move relative to the bone drill.

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