Bone Resection Device

Abstract

The present invention belongs to the field of medical instruments, and discloses a bone resection device. The bone resection device comprises: a bone-adhering plate for adhering and fixing to the bone surface of a human body, a through groove formed on the bone-adhering plate for exposing the bone to be cut; a support guide plate detachably connected to one side of the bone-adhering plate; and a cutting assembly slidably connected to the support guide plate with a preset sliding path. The cutting assembly is configured to be able to slide along the preset sliding path on the support guide plate, so that the cutting end of the cutting assembly can cut the bone to be cut in the area of ​​the through groove. When the bone resection device of the present invention is applied to the cutting of the mandible, it can effectively reduce the difficulty of the operation, improve the cutting accuracy of the operation, and reduce the risk of failure of the operation.

Description

Technical Field

[0001] The invention belongs to the field of medical instruments, and in particular relates to a bone resection device. Background Art

[0002] When a bone of the human body is diseased or needs to be repaired, for example, a part of the mandible of the human body usually needs to be removed to meet the patient's health or appearance requirements. The existing mandible bone removal device is a handheld electric rotary tool with a saw blade milling cutter installed at one end of the tool. When performing a mandible removal surgery, the surgeon holds the tool to cut the patient's mandible.

[0003] However, the mandibular cutting method in the prior art still has the following shortcomings: 1) The entire operation is performed by the surgeon, which makes the cutting trajectory of the mandible completely dependent on the surgeon's personal experience, thereby increasing the difficulty of the operation and the risk of failure; 2) The size of the mandibular cut is controlled by the surgeon during the operation. When the sizes of the mandibular cuts on both sides of the face are different, it is easy to cause over-cutting or under-cutting of the mandible on one side of the patient, thereby causing a decrease in the symmetry of the patient's face; 3) The handheld electric rotary tool in the prior art has a low rotation speed, which makes cutting more laborious and time-consuming; 4) The saw blade milling cutter is large in size, and when cutting the mandible, it is easy to cut the arteries near the mandible, putting the patient's life in danger.

[0004] In view of the shortcomings of the existing technology, technicians in this field are in urgent need of seeking a bone resection device that can effectively reduce the difficulty of surgical operation and improve the cutting accuracy of the operation when used in cutting the mandibular bone, so as to reduce the risk of surgical failure. Summary of the invention

[0005] In order to solve all or part of the above problems, the purpose of the present invention is to provide a bone resection device that can effectively reduce the difficulty of surgical operation and improve the cutting accuracy of the operation when used for cutting the mandibular bone, so as to reduce the risk of surgical failure.

[0006] The bone resection device of the present invention comprises: a bone-attaching plate for attaching and fixing to the bone surface of a human body, a through slot formed on the bone-attaching plate for exposing the bone to be cut; a support guide plate detachably connected to one side of the bone-attaching plate; and a cutting assembly slidably connected to the support guide plate with a preset sliding path. The cutting assembly is configured to slide along the preset sliding path on the support guide plate, so that the cutting end of the cutting assembly can cut the bone to be cut in the area of ​​the through slot.

[0007] Furthermore, a slide groove is formed on the support guide plate for making the cutting assembly slide along a preset slide path, and the cutting assembly includes: a slider slidably connected to the slide groove; an operating rod rotatably connected to the slider; and a drilling and milling cutter assembly disposed at one end of the operating rod close to the through groove. The operating rod can rotate relative to the slider to drive the drilling and milling cutter assembly to move in a direction close to and away from the through groove.

[0008] Furthermore, the operating rod is constructed as a hollow rod so that an air inlet channel and an air outlet channel are formed in the operating rod. The cutting assembly also includes an air supply device located at the air inlet end of the air inlet channel and connected to the operating rod. The drilling and milling cutter assembly includes a pneumatic turbine assembly located at the air inlet end of the air outlet channel, fixed to and connected to the operating rod, and a drilling and milling cutter head connected to the pneumatic turbine assembly, wherein the pneumatic turbine assembly is configured to drive the drilling and milling cutter head to rotate under the drive of the air supply device.

[0009] Furthermore, the pneumatic turbine assembly includes: a turbine housing fixed and sealed to the operating rod; a pneumatic turbine rotatably connected to the turbine housing; a clamping sleeve having one end fixedly connected to the pneumatic turbine and the other end extending out of the turbine housing toward the bone plate, and the drilling and milling cutter head is sleeved in the clamping sleeve. The pneumatic turbine can rotate circumferentially under the drive of the air supply device to drive the drilling and milling cutter head sleeved with the clamping sleeve to rotate synchronously.

[0010] Furthermore, the pneumatic turbine assembly also includes a return spring which is sleeved on the clamping sleeve and elastically abuts between the pneumatic turbine and the turbine housing. A through hole which is slidably connected to the clamping sleeve is formed on the turbine housing, wherein the diameter of the outer circumferential wall of the clamping sleeve gradually decreases axially from one end of the clamping sleeve extending out of the turbine housing, and the maximum diameter of the outer circumferential wall of the clamping sleeve is greater than the diameter of the through hole.

[0011] Furthermore, the pneumatic turbine assembly also includes a pressing plate passing through the top wall of the turbine housing away from the drilling and milling cutter head. The pressing plate is slidably and sealingly connected to the turbine housing, and one end of the pressing plate located in the turbine housing is connected to the pneumatic turbine.

[0012] Furthermore, the cutter head portion of the drilling and milling cutter head is made of polycrystalline diamond material, and the cutter handle of the drilling and milling cutter head is made of steel material.

[0013] Furthermore, a positioning groove is formed on one of the bone pasting plate and the supporting guide plate, and a positioning protrusion which is matched and connected with the positioning groove is formed on the other one.

[0014] Furthermore, the bone-attaching plate and the supporting guide plate are fixed by gluing.

[0015] Furthermore, the bone pasting plate also includes a clamping portion arranged on the edge of the bone pasting plate for clamping with the bone to be cut.

[0016] Compared with the prior art, the bone resection device of the embodiment of the present invention has the following advantages:

[0017] 1) The bone cutting process is completed by the bone plate, the support guide plate and the cutting assembly, and the cutting trajectory is determined by the doctor using holographic scanning or embedded sensors. In this way, it can effectively avoid the problem in the prior art that the surgeon is operated by hand throughout the entire operation, making the cutting trajectory of the mandible completely dependent on the doctor's personal experience, thereby effectively reducing the difficulty of the operation and the risk of failure, and effectively improving the accuracy of the operation.

[0018] 2) The size of the mandibular cut is predetermined, that is, the preset cutting trajectory. Even when the sizes of the mandibular cuts on both sides of the face are different, the mandibular cut can be completed by replacing the bone plate and the guide support plate. This not only does not easily cause the problem of excessive or insufficient cutting of the mandibular bone on one side of the patient, but can also effectively improve the symmetry of the patient's face.

[0019] 3) The through groove formed on the bone plate for exposing the bone to be cut can also effectively determine the initial surgical position to prevent the cutting end of the cutting component from cutting unnecessary parts, thus effectively avoiding the problem of cutting the artery near the mandibular bone and causing life-threatening problems for the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of a bone resection device according to an embodiment of the present invention;

[0021] Figure 2 for Figure 1 A perspective view of the operating lever shown, wherein a schematic diagram of the connection between the operating lever and the drilling and milling cutter assembly is shown;

[0022] Figure 3 for Figure 1 The structural schematic diagram of the drilling and milling cutter assembly is shown. DETAILED DESCRIPTION

[0023] In order to better understand the purpose, structure and function of the present invention, a bone resection device of the present invention is further described in detail below in conjunction with the accompanying drawings.

[0024] Figure 1 FIG. 2 shows the structure of a bone resection device 100 according to an embodiment of the present invention. Figure 1As shown, the bone resection device 100 of the embodiment of the present invention comprises: a bone-attaching plate 1 for attaching and fixing to the bone surface of the human body, and a through slot 11 for exposing the bone to be cut is formed on the bone-attaching plate 1; a support guide plate 2 detachably connected to one side of the bone-attaching plate 1; and a cutting assembly 3 slidably connected to the support guide plate 2 with a preset sliding path. The cutting assembly 3 is configured to be able to slide along the preset sliding path on the support guide plate 2, so that the cutting end of the cutting assembly 3 can cut the bone to be cut in the area of ​​the through slot 11.

[0025] When the bone resection device 100 of the embodiment of the present invention is used, for example, when it is applied to the resection of the mandible of the human body, according to the resection requirements of the patient, the doctor first uses holographic scanning or embedded sensors to draw a three-dimensional model of the mandible on both sides of the patient in the computer, and draws a bone plate 1 and a support guide plate 2 suitable for the patient according to the three-dimensional model, so that the bone plate 1 can completely fit the surface of the mandible of the patient, and the support guide plate 2 is formed with a preset sliding path for the sliding of the cutting component 3 that meets the resection requirements of the patient, that is, the preset sliding path is the required cutting trajectory of the patient. During the operation, the bone plate 1 is used to fit and fix on the mandible of the patient, and the through groove 11 on the bone plate 1 can expose the area of ​​the mandible to be resected. The cutting component 3 slides along the cutting trajectory, so that the cutting end of the cutting component 3 moves along the cutting trajectory at the same time to complete the cutting of the mandible. After the mandible removal part on one side is completely resected, the cutting component 3 is replaced with the bone plate 1 and the guide support plate 2 on the other side to complete the resection of the mandible on the other side.

[0026] Through the above-mentioned settings, compared with the prior art, the bone cutting process of the bone resection device 100 of the embodiment of the present invention is completed by the cooperation of the bone plate 1, the support guide plate 2 and the cutting assembly 3, and the cutting trajectory is determined by the doctor by drawing by holographic scanning or embedding a sensor. In this way, on the one hand, it can effectively avoid the problem that the surgeon in the prior art operates the entire operation by hand, so that the cutting trajectory of the mandible depends entirely on the doctor's personal experience, thereby effectively reducing the difficulty of the operation and the risk of failure of the operation, and effectively improving the accuracy of the operation; on the other hand, the size of the mandible to be cut is predetermined, that is, the preset cutting trajectory. Even when the size of the mandible cut on both sides of the face is different, the mandible can be cut by replacing the bone plate 1 and the guide support plate 2. This not only does not easily cause the problem of excessive or insufficient cutting of the mandible on one side of the patient, but also can effectively improve the symmetry of the patient's face. In addition, the through groove 11 formed on the bone plate 1 for exposing the bone to be cut can also effectively determine the initial surgical position to prevent the cutting end of the cutting component 3 from cutting off unnecessary parts. In this way, it can effectively avoid cutting the arteries near the mandible and causing life-threatening problems for the patient.

[0027] Therefore, by cutting bones using the bone resection device 100 of the embodiment of the present invention, it is possible to effectively reduce the difficulty of surgery, greatly simplify the doctor's operation, and significantly improve the consistency between the surgical results and the predicted effects of the surgery.

[0028] In a preferred embodiment, the bone plate 1 can be processed by 3D printing, so that the bone plate 1 can be quickly processed according to the shape of the mandible of different patients to improve the processing efficiency. In addition, the processing accuracy of 3D printing is better, which can effectively improve the accuracy of the operation.

[0029] Preferably, a slide groove 21 for sliding the cutting assembly 3 along a preset sliding path may be formed on the support guide plate 2, and the cutting assembly 3 may include: a slider 31 slidably connected to the slide groove 21; an operating rod 32 rotatably connected to the slider 31; and a drilling and milling cutter assembly 33 disposed at one end of the operating rod 32 close to the through slot 11. The operating rod 32 can rotate relative to the slider 31 to drive the drilling and milling cutter assembly 33 to move in a direction close to and away from the through slot 11. When in use, the surgeon holds the operating rod 32, and when it is necessary to cut the mandible, that is, when drilling or milling the mandible by the drilling and milling cutter assembly 33, the surgeon controls the operating rod 32 to move the drilling and milling cutter assembly 33 in a direction close to the mandible to make a hole on the mandible. After completion, the surgeon controls the operating rod 32 to separate the drilling and milling cutter assembly 33 from the mandible, and moves the slider 31 to position the drilling and milling cutter assembly 33 at the next hole. Through multiple operations, the cutting of the mandible is completed.

[0030] Through the above-mentioned arrangement, on the one hand, the slide groove 21 can be pre-processed according to the cutting trajectory of the patient's mandible, so that the sliding cooperation between the slider 31 and the slide groove 21 can effectively provide precise surgical guidance to improve the cutting accuracy of the mandible; on the other hand, the surgeon only needs to control the operating rod 32 to move closer to and away from the patient's mandible and move the slider 31 to complete the operation, which not only further reduces the difficulty of the operation, but also can lift the operating rod 32 in time to disengage the drilling and milling cutter assembly 33 once the surgeon's cutting position is incorrect, thereby effectively avoiding unnecessary cutting problems caused by misoperation.

[0031] In such Figure 1 In the preferred embodiment shown, the cutting assembly 3 may further include a ball 311 disposed on the slider 31 and slidably connected to the slide groove 21. With this arrangement, the ball 311 can form a more snug fit with the inner wall of the slide groove 21, which not only provides more flexible sliding, but also makes the cutting assembly 3 more stable during the sliding process of the ball 311.

[0032] Preferably, if Figure 2 As shown, the operating rod 32 can be constructed as a hollow rod, so that an air inlet channel 321 and an air outlet channel 322 can be formed in the operating rod 32. Figure 1 As shown, the cutting assembly 3 may also include an air supply device 34 located at the air inlet end of the air inlet channel 321 and connected to the operating rod 32, Figure 3 As shown, the drilling and milling cutter assembly 33 may include a pneumatic turbine assembly 331 located at the air inlet end of the air outlet channel 322 and fixed and connected to the operating rod 32, and a drilling and milling cutter head 332 connected to the pneumatic turbine assembly 331. The pneumatic turbine assembly 331 is configured to drive the drilling and milling cutter head 332 to rotate under the drive of the air supply device 34. When in use, the air supply device 34 is started, and the air supply device 34 can provide high-pressure gas, which passes through the air inlet channel 321, the pneumatic turbine assembly 331 and the air outlet channel 322 in sequence, so that the high-pressure gas forms a circulating high-pressure airflow, and the pneumatic turbine assembly 331 rotates at a high speed under the action of the high-pressure circulating airflow, thereby driving the drilling and milling cutter head 332 to rotate synchronously at a high speed. Preferably, the air supply device 34 can be set to: a power of 1500W, a gas pressure of 8bar, and a gas flow of 300L / min. Further preferably, the pneumatic turbine assembly 331 can be configured to have a maximum speed of 400,000 revolutions / min under the drive of the air supply device 34. Through this arrangement, the drilling and milling cutter head 332 can have a higher rotation speed to meet the needs of the operation, which can not only effectively reduce the operation time, but the higher rotation speed can also reduce the stress when the drilling and milling cutter head 332 contacts the bone, thereby reducing the risk during bone cutting.

[0033] Preferably, if Figure 1 As shown, the air supply device 34 may include a high-pressure air pump 341 and a medical air tube 342 for connecting the high-pressure air pump 341 with the air inlet end of the operating rod 32 .

[0034] Preferably, the operating rod 32 can be processed by 3D printing to adapt its own length and shape to different cutting tracks in a fast processing manner.

[0035] In such Figure 3In the preferred embodiment shown, the pneumatic turbine assembly 331 may include: a turbine housing 333 fixed and sealed to the operating rod 32; a pneumatic turbine 334 rotatably connected to the turbine housing 333; a clamping sleeve 335 having one end fixedly connected to the pneumatic turbine 334 and the other end extending out of the turbine housing 333 toward the bone plate 1, and the drilling and milling cutter head 332 is sleeved in the clamping sleeve 335. The pneumatic turbine 334 can rotate circumferentially under the drive of the air supply device 34 to drive the drilling and milling cutter head 332 sleeved with the clamping sleeve 335 to rotate synchronously. Specifically, a cylindrical sealed cavity is formed in the turbine housing 333, and the high-pressure gas in the air supply device 34 can enter the sealed cavity through the air flow channel. The pneumatic turbine 334 and the sealed cavity of the turbine housing 333 are coaxially arranged in the turbine housing 333. The clamping sleeve 335 is coaxially fixed with the pneumatic turbine 334 and one end extends out of the turbine housing 333 for installation and removal of the drilling and milling cutter head 332. The turbine housing 333 is spaced and coaxially fixed with bearings for rotationally connecting with the clamping sleeve 335, so that the clamping sleeve 335 can rotate synchronously with the pneumatic turbine 334 to drive the drilling and milling cutter head 332 to rotate.

[0036] Preferably, the turbine housing 333 can be fixed to the operating rod 32 by welding to improve the stability of the connection between the turbine housing 333 and the operating rod 32 .

[0037] Preferably, if Figure 3 As shown, the pneumatic turbine assembly 331 may also include a return spring 336 which is sleeved on the clamping sleeve 335 and elastically abuts between the pneumatic turbine 334 and the turbine housing 333. A through hole (not shown in the figure) which is slidably connected to the clamping sleeve 335 is formed on the turbine housing 333, wherein the diameter of the outer peripheral wall of the clamping sleeve 335 may gradually decrease along the axial direction from one end of the clamping sleeve 335 extending out of the turbine housing 333, and the maximum diameter of the outer peripheral wall of the clamping sleeve 335 is greater than the diameter of the through hole. Through this arrangement, the clamping sleeve 335 can be formed into a spring jacket, so that when the drilling and milling cutter head 332 is installed, the return spring 336 is further compressed, so that one end 335 of the clamping sleeve extends out of the turbine housing 333, the handle of the drilling and milling cutter head 332 is inserted into the clamping sleeve 335, and the return spring 336 is released, so that the return spring 336 drives the clamping sleeve 335 to move, so that the maximum diameter of the outer peripheral wall of the clamping sleeve 335 is greater than the diameter of the through hole, so that the clamping sleeve 335 can form a tight fit with the turbine housing 333 under the action of the return spring 336, thereby effectively fixing the drilling and milling cutter head 332; anyway, the disassembly of the drilling and milling cutter head 332 is carried out, which will not be repeated here. Through this arrangement, the installation and disassembly of the drilling and milling cutter head 332 can be facilitated, thereby making the use of the bone resection device 100 of the embodiment of the present invention more convenient.

[0038] Preferably, if Figure 3 As shown, the pneumatic turbine assembly 331 may also include an upper cover 337 located at the upper part of the turbine housing 333 for sealing the upper part of the pneumatic turbine 334 and a lower cover 338 located at the lower part of the turbine housing 333 for compressing the return spring 336 so that it does not pop out and maintaining the compression force of the return spring 336.

[0039] Preferably, if Figure 3 As shown, the pneumatic turbine assembly 331 may also include a pressing plate 339 passing through the top wall of the turbine housing 333 on the side away from the drilling and milling cutter head 332, the pressing plate 339 is slidably and sealedly connected to the turbine housing 333, and one end of the pressing plate 339 located in the turbine housing 333 is connected to the pneumatic turbine 334. Among them, the upper cover 337 is configured to be able to be slidably connected to the pressing plate 339 and prevent the pressing plate 339 from being ejected. Through this configuration, the drilling and milling cutter head 332 can be installed and removed by only operating the pressing plate 339, thereby effectively improving the convenience of replacing the drilling and milling cutter head 332.

[0040] Preferably, if Figure 3 As shown, the cutter head 3321 of the drilling and milling cutter head 332 is made of polycrystalline diamond material, and the handle 3322 of the drilling and milling cutter head 332 is made of steel material. The advantage is that polycrystalline diamond has high hardness and good thermal hardness, and can cut bones well at high speed, thereby speeding up the operation time. Preferably, the handle 3322 can be made of tool steel or high-speed steel material to ensure the rigidity of the drilling and milling cutter head 332.

[0041] Back to Figure 1 Preferably, a positioning groove 4 may be formed on one of the bone-attaching plate 1 and the supporting guide plate 2, and a positioning protrusion 5 may be formed on the other to be matched with the positioning groove 4. With this arrangement, on the one hand, the installation and removal of the positioning groove 4 and the positioning protrusion 5 are more convenient, and on the other hand, the matching accuracy can be effectively improved to ensure the accuracy of the cutting track after the bone-attaching plate 1 and the supporting guide plate 2 are installed.

[0042] Preferably, the bone-attaching plate 1 and the supporting guide plate 2 can be fixed by gluing. Preferably, medical glue with waterproof performance can be used for gluing.

[0043] Preferably, the bone plate 1 and the support guide plate 2 can be arranged coplanar or in parallel, so that the bone resection device 100 of the embodiment of the invention can be suitable for cutting bones of different parts, thereby making the application range of the bone resection device 100 of the embodiment of the invention wider.

[0044] Preferably, the bone plate 1 may also include a clamping portion (not shown) disposed at the edge of the bone plate 1 for clamping with the bone to be cut. The clamping portion may be configured as a hook to hook on the edge of the mandible of the human body to fix the bone plate 1.

[0045] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A bone resection device, characterized in that: include: A bone-attaching plate for attaching and fixing to the bone surface of a human body, wherein a through groove is formed on the bone-attaching plate for exposing the bone to be cut; A support guide plate detachably connected to one side of the bone-attaching plate; A cutting assembly slidably connected to the support guide plate along a preset sliding path; Wherein, the cutting assembly is configured to be able to slide along a preset sliding path on the support guide plate, so that the cutting end of the cutting assembly can cut the bone to be cut in the area of ​​the through groove; The support guide plate is formed with a slide groove for enabling the cutting assembly to slide along the preset sliding path, and the cutting assembly comprises: A sliding block slidably connected to the sliding groove; Rotating an operating rod connected to the slider; A drilling and milling cutter assembly provided at one end of the operating rod close to the through slot; Wherein, the operating rod can rotate relative to the slider to drive the drilling and milling cutter assembly to move in a direction close to and away from the through slot; The operating rod is constructed as a hollow rod, so that an air inlet channel and an air outlet channel are formed in the operating rod, the cutting assembly also includes an air supply device located at the air inlet end of the air inlet channel and connected to the operating rod, the drilling and milling cutter assembly includes a pneumatic turbine assembly located at the air inlet end of the air outlet channel and fixed to and connected to the operating rod, and a drilling and milling cutter head connected to the pneumatic turbine assembly, wherein the pneumatic turbine assembly is configured to drive the drilling and milling cutter head to rotate under the drive of the air supply device; The pneumatic turbine assembly comprises: a turbine housing fixed to and in sealed communication with the operating rod; a pneumatic turbine rotatably connected within the turbine housing; One end is fixedly connected to the pneumatic turbine, and the other end extends out of the clamping sleeve of the turbine housing facing the bone plate, and the drilling and milling cutter head is sleeved in the clamping sleeve; Wherein, the pneumatic turbine can rotate circumferentially under the drive of the air supply device to drive the drilling and milling cutter head sleeved with the clamping sleeve to rotate synchronously; A positioning groove is formed on one of the bone pasting plate and the supporting guide plate, and a positioning protrusion which is matched and connected with the positioning groove is formed on the other one; The bone pasting plate further comprises a clamping portion arranged at the edge of the bone pasting plate and used for clamping with the bone to be cut.

2. The bone resection device according to claim 1, characterized in that: The pneumatic turbine assembly also includes a return spring sleeved on the clamping sleeve and elastically abutting between the pneumatic turbine and the turbine housing, and a through hole slidably connected to the clamping sleeve is formed on the turbine housing, wherein the diameter of the outer peripheral wall of the clamping sleeve gradually decreases axially from one end of the clamping sleeve extending out of the turbine housing, and the maximum diameter of the outer peripheral wall of the clamping sleeve is greater than the diameter of the through hole.

3. The bone resection device according to claim 2, characterized in that: The pneumatic turbine assembly also includes a pressing plate that passes through the top wall of the turbine housing on a side away from the drilling and milling cutter head. The pressing plate is slidably and sealingly connected to the turbine housing, and one end of the pressing plate located in the turbine housing is connected to the pneumatic turbine.

4. The bone resection device according to any one of claims 1 to 3, characterized in that: The cutter head of the drilling and milling cutter head is made of polycrystalline diamond material, and the cutter handle of the drilling and milling cutter head is made of steel material.

5. The bone resection device according to claim 1, characterized in that: The bone-attaching plate and the supporting guide plate are fixed by gluing.

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