Medical planing tool

Abstract

This application relates to the field of medical device technology, and more particularly to a medical planing tool, comprising an outer blade tube, an outer tube connector, an inner blade tube, an inner tube connector, a first magnetic component, and a second magnetic component; the outer blade tube is fixedly connected to the outer tube connector, and the inner blade tube is fixedly connected to the inner tube connector; the outer tube connector and the inner tube connector are detachably connected; the first magnetic component is fixedly disposed on the outer tube connector, and the second magnetic component is fixedly disposed on the inner tube connector; when the inner tube connector and the outer tube connector are engaged, the outer blade tube is sleeved on the inner blade tube, the first end face of the outer tube connector and the second end face of the inner tube connector are opposite to each other, and the magnetic direction of the first magnetic component is opposite to that of the second magnetic component; under the action of the magnetic force of the first magnetic component and the second magnetic component, the first end face and the second end face do not contact each other, thereby reducing the influence of the friction between the outer tube connector and the inner tube connector on the rotation speed of the tool, and thus improving the performance of the tool.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a medical planing tool. Background Art

[0002] With the continuous development of medical device technology, the requirements for the use of medical knives are becoming higher and higher, especially in arthroscopic surgery, the requirements for the use of medical planing tools are also constantly increasing. At present, the planing tool is actually composed of two stacked sleeves. During the use of the tool, under the action of the power system, the contact part between the two sleeves will be worn due to friction, affecting the performance of the planing tool.

[0003] Therefore, it is necessary to provide an improved medical planing tool to solve the above-mentioned technical problems. Summary of the invention

[0004] In order to solve the above-mentioned problems of the prior art, the present application discloses a medical shaver tool, comprising an outer knife tube, an outer tube connector, an inner knife tube, an inner tube connector, a first magnetic component and a second magnetic component; the outer knife tube is fixedly connected to the outer tube connector, and the inner knife tube is fixedly connected to the inner tube connector; the outer tube connector and the inner tube connector are detachably connected, the first magnetic component is fixedly arranged on the outer tube connector, and the second magnetic component is fixedly arranged on the inner tube connector; when the inner tube connector and the outer tube connector are in cooperation, the outer knife tube is sleeved on the inner knife tube, the first end face of the outer tube connector and the second end face of the inner tube connector are arranged opposite to each other, and the magnetic direction of the first magnetic component is opposite to the magnetic direction of the second magnetic component; under the action of the magnetic force of the first magnetic component and the second magnetic component, the first end face and the second end face are not in contact with each other.

[0005] Furthermore, a first limiting structure is arranged in the outer tube connecting piece, and a second limiting structure matching the first limiting structure is arranged on the inner tube connecting piece. When the inner tube connecting piece and the outer tube connecting piece are in cooperation, the first limiting structure and the second limiting structure are slidably connected.

[0006] Furthermore, it also includes an elastic part and a connecting sleeve, and the inner tube connecting part and the connecting sleeve are elastically connected through the elastic part; when the inner tube connecting part and the connecting sleeve are in cooperation, the direction of the elastic force applied by the elastic part on the inner tube connecting part is opposite to the direction of the magnetic force applied by the first magnetic part on the second magnetic part.

[0007] Furthermore, a first limiting structure is arranged in the outer tube connecting piece, and a second limiting structure matching the first limiting structure is arranged on the inner tube connecting piece; when the inner tube connecting piece is in cooperation with the connecting sleeve, under the action of the elastic force of the elastic piece, the first limiting structure and the above-mentioned second limiting structure are not in contact.

[0008] Further, when the inner tube connector and the outer tube connector are in cooperation, the repulsive force between the first magnetic component and the second magnetic component is 3N to 7N.

[0009] Furthermore, when the inner tube connector is in cooperation with the connecting sleeve, the elastic force applied by the elastic member on the inner tube connector is 3N to 7N.

[0010] Furthermore, the outer tube connecting piece is provided with a groove, the first magnetic piece is arranged in the groove, the inner tube connecting piece is provided with a clamping groove, and the second magnetic piece is clamped in the clamping groove.

[0011] Furthermore, the outer diameter of the inner blade tube is 0.30 mm to 0.60 mm smaller than the inner diameter of the outer blade tube.

[0012] Furthermore, the outer knife tube is provided with a bevel.

[0013] Furthermore, a medical shaver tool also includes a cutter head, which is fixedly arranged at one end of the inner cutter tube, and a chip suction hole is arranged on the cutter head, and the inner cutter tube is connected to the chip suction hole.

[0014] The medical planing tool provided by the present application has at least the following beneficial effects:

[0015] 1. The present application arranges a first magnetic member on the outer tube connector and a second magnetic member on the inner tube connector. Under the action of the magnetic force of the first magnetic member and the second magnetic member, the first end face and the second end face do not contact each other, and when the inner knife tube is driven by power to rotate at high speed, no friction is generated between the first end face and the second end face, so that the axial friction force between the outer knife tube and the inner knife tube of the tool is zero, thereby reducing the heat generated by the friction of the tool during operation, thereby reducing the noise generated by the tool during use, thereby improving the performance of the tool and extending the service life of the tool.

[0016] 2. In the present application, the inner tube connector and the connecting sleeve are elastically connected by an elastic member. When the inner tube connector and the connecting sleeve are in cooperation, the direction of the elastic force applied by the elastic member on the inner tube connector is opposite to the direction of the magnetic force applied by the first magnetic member on the second magnetic member, so that a gap is left between the first limiting structure of the outer tube connector and the second limiting structure of the inner tube connector, thereby reducing the influence of the friction between the outer tube connector and the inner tube connector on the rotation rate of the tool, reducing the debris and noise generated by friction during the use of the tool, and thereby improving the performance of the tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions and advantages in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 : A schematic diagram of the overall structure of a medical shaver provided in an embodiment of the present application;

[0019] Figure 2 : An exploded view of a part of the structure of a medical shaver provided in an embodiment of the present application;

[0020] Figure 3 : An exploded view of a part of the structure of a medical shaver provided in an embodiment of the present application;

[0021] In the figure: 1-outer knife tube, 2-outer tube connecting piece, 3-inner knife tube, 4-inner tube connecting piece, 5-first magnetic piece, 6-second magnetic piece, 7-knife head, 8-elastic piece, 9-connecting sleeve, 11-inclined surface, 21-first limiting structure, 22-groove, 23-installing part, 41-second limiting structure, 42-slot, 43-abutting part, 71-chip suction hole, 91-limiting part. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0023] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, device, product or equipment comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0024] The following describes the embodiments with reference to the accompanying drawings, which do not limit the application contents described in the claims.

[0025] Please refer to Figure 1-3 The embodiment of the present application provides a medical shaver tool, comprising an outer knife tube 1, an outer tube connector 2, an inner knife tube 3, an inner tube connector 4, a first magnetic component 5 and a second magnetic component 6; the outer knife tube 1 is fixedly connected to the outer tube connector 2, and the inner knife tube 3 is fixedly connected to the inner tube connector 4; the outer tube connector 2 and the inner tube connector 4 are detachably connected, the first magnetic component 5 is fixedly arranged on the outer tube connector 2, and the second magnetic component 6 is fixedly arranged on the inner tube connector 4;

[0026] When the inner tube connector 4 and the outer tube connector 2 are in cooperation, the outer knife tube 1 is sleeved on the inner knife tube 3, the first end face of the inner tube connector 4 and the second end face of the outer tube connector 2 are arranged opposite to each other, and the magnetic direction of the first magnetic component 5 is opposite to the magnetic direction of the second magnetic component 6; under the action of the magnetic force of the first magnetic component 5 and the second magnetic component 6, there is no contact between the first end face and the second end face.

[0027] In this way, by means of the first magnetic part arranged on the outer tube connecting part and the second magnetic part arranged on the inner tube connecting part, under the action of the magnetic force of the first magnetic part and the second magnetic part, the first end face and the second end face are not in contact, and when the inner knife tube is driven by power to rotate at high speed, no friction is generated between the first end face and the second end face, so that the axial friction force between the outer knife tube and the inner knife tube of the tool is zero, thereby reducing the heat generated by the friction of the tool when working, thereby reducing the noise generated by the tool during use, thereby improving the performance of the tool and extending the service life of the tool.

[0028] Specifically, the first magnetic component 5 and the second magnetic component 6 are both permanent magnets. For example, the first magnetic component 5 and the second magnetic component 6 can be neodymium magnets.

[0029] Specifically, neodymium magnets have the advantages of high temperature resistance, high hardness and strong magnetic force.

[0030] In some embodiments, a first limiting structure 21 is provided in the outer tube connector 2, and a second limiting structure 41 matching the first limiting structure 21 is provided on the inner tube connector 4. When the inner tube connector 4 is in cooperation with the outer tube connector 2, the first limiting structure 21 is slidably connected to the second limiting structure 41.

[0031] Specifically, the first limiting structure 21 can be a plurality of circular protrusion structures, and the second limiting structure 41 can be an annular protrusion structure. When the inner tube connector 4 and the outer tube connector 2 are in cooperation, the plurality of circular protrusion structures can be clamped and connected with the annular protrusion structure, thereby realizing a detachable connection between the outer tube connector 2 and the inner tube connector 4.

[0032] In other embodiments, the first limiting structure 21 may be a plurality of circular protrusion structures, and the second limiting structure 41 may be an annular groove structure, and through the cooperation between the circular protrusion structure and the annular groove structure, a detachable connection between the outer tube connector 2 and the inner tube connector 4 is achieved.

[0033] In some embodiments, an elastic member 8 and a connecting sleeve 9 are also included, and the inner tube connecting member 4 and the connecting sleeve 9 are elastically connected through the elastic member 8; when the inner tube connecting member 4 and the connecting sleeve 9 are in cooperation, the direction of the elastic force applied by the elastic member 8 on the inner tube connecting member 4 is opposite to the direction of the magnetic force applied by the first magnetic member 5 on the second magnetic member 6.

[0034] Specifically, the elastic member 8 may be a spring.

[0035] Specifically, a limiting portion 91 is provided on the connecting sleeve 9, and an abutting portion 43 is provided on the inner tube connecting portion 4. The connecting sleeve 9 and the inner tube connecting portion 4 are limitedly matched, one end of the elastic member 8 is fixedly connected to the connecting sleeve 9, and the other end of the elastic member 8 abuts against the inner tube connecting portion 4; under the action of the elastic member 8, the limiting portion 91 abuts against the abutting portion 43, thereby realizing the cooperation between the connecting sleeve 9 and the inner tube connecting member 4, and the connecting sleeve 9 and the inner tube connecting member 4 rotate synchronously under the action of the driving system.

[0036] In some embodiments, a first limiting structure 21 is provided in the outer tube connector 2, and a second limiting structure 41 matching the first limiting structure 21 is provided on the inner tube connector 4; when the inner tube connector 4 is in cooperation with the connecting sleeve 9, under the action of the elastic force of the elastic member 8, there is no contact between the first limiting structure 21 and the second limiting structure 41.

[0037] In this embodiment, the inner tube connector 4 is elastically connected to the connecting sleeve 9 by means of the elastic member 8. When the inner tube connector 4 is in cooperation with the connecting sleeve 9, the direction of the elastic force applied by the elastic member 8 on the inner tube connector 4 is opposite to the direction of the magnetic force applied by the first magnetic member 5 on the second magnetic member 6, so that a gap is left between the first limiting structure 21 of the outer tube connector 2 and the second limiting structure 41 of the inner tube connector 4, thereby reducing the friction between the outer tube connector 2 and the inner tube connector 4, alleviating the wear of the tool, and thereby improving the performance of the tool.

[0038] In some embodiments, when the inner tube connector 4 and the outer tube connector 2 are in cooperation, the distance between the first end face of the inner tube connector 4 and the second end face of the outer tube connector 2 is between 0.4 mm and 0.6 mm, and the repulsive force between the first magnetic component 5 and the second magnetic component 6 is 3N to 7N.

[0039] Preferably, the distance between the first end face of the inner tube connector 4 and the second end face of the outer tube connector 2 is 0.5 mm, and the repulsive force is 5N.

[0040] In some embodiments, when the inner tube connector 4 is in cooperation with the connecting sleeve 9 , the elastic force exerted by the elastic member 8 on the inner tube connector 4 is 3N to 7N.

[0041] Specifically, the preferred elastic force is 5N.

[0042] Specifically, by limiting the repulsive force between the elastic force and the magnetic parts, it is possible to ensure that a force balance state is generated between the elastic force and the repulsive force during the use of the tool, so that a gap is left between the first limiting structure 21 of the outer tube connector 2 and the second limiting structure 41 of the inner tube connector 4, thereby reducing the friction between the outer tube connector 2 and the inner tube connector 4, alleviating the wear of the tool, and thereby improving the performance of the tool.

[0043] In some embodiments, a groove 22 is provided on the outer tube connector 2 , the first magnetic member 5 is disposed in the groove 22 , a clamping groove 42 is provided on the inner tube connector 4 , and the second magnetic member 6 is clamped in the clamping groove 42 .

[0044] Specifically, the first magnetic member 5 may be an annular integrated structure, the groove 22 may be an annular groove structure matching therewith, and the first magnetic member 5 is clamped in the annular groove.

[0045] In other embodiments, the first magnetic member 5 may be a plurality of magnetic blocks, and the corresponding grooves 22 may be a plurality of small grooves matching the sizes of the magnetic blocks, and the magnetic blocks may be snapped or bonded into the small grooves.

[0046] In this embodiment, the detachable connection between the first magnetic member 5 and the groove 22 facilitates timely replacement of the first magnetic member 5, thereby improving the performance of the tool.

[0047] Exemplarily, the number of magnetic blocks may be 4, and the number of corresponding small grooves may be 4.

[0048] In this embodiment, by setting the first magnetic part 5 in the form of multiple magnetic blocks, the magnetism of the magnetic part can be improved, and by setting the groove 22 in the form of a corresponding number of small grooves, the cutting strength of the outer tube connector 2 is reduced, the supporting strength of the outer tube connector 2 can be improved, and then the use strength of the tool is improved.

[0049] In some embodiments, the outer diameter of the inner blade tube 3 is 0.30 mm to 0.60 mm smaller than the inner diameter of the outer blade tube 1 .

[0050] In this embodiment, by limiting the difference between the outer diameter of the inner blade tube 3 and the inner diameter of the outer blade tube 1 , the vibration amplitude of the inner blade tube 3 can be further limited, thereby improving the stability of the tool use.

[0051] In some embodiments, a bevel 11 is provided on the outer blade tube 1 .

[0052] In this embodiment, by providing a bevel 11 at the end of the outer blade tube, the operation of the blade head is more convenient.

[0053] In some embodiments, a medical shaver tool further includes a cutter head 7, which is fixedly disposed at one end of the inner cutter tube 3. The cutter head 7 is provided with a chip suction hole 71, and the inner cutter tube 3 is connected to the chip suction hole 71.

[0054] Specifically, the inner blade tube 3 is a hollow structure.

[0055] In this embodiment, by connecting the inner blade tube 3 and the chip suction hole 71 of the blade head 7, the tissue cut by the blade head 7 can be sucked out through the chip suction hole 71 under the action of the power system, thereby ensuring.

[0056] Specifically, the cutter head 7 and the inner cutter tube 3 can be threadedly connected to facilitate replacement of the cutter head 7 to meet different surgical requirements.

[0057] Specifically, the cutter head 7 and the inner cutter tube 3 can be fixed by welding.

[0058] In other embodiments, the outer tube connector 2 and the inner tube connector 4 are both plastic parts; the outer knife tube 1 and the inner knife tube 3 are both made of non-magnetic materials.

[0059] In other embodiments, the outer blade tube 1 and the outer tube connector 2 are integrally formed by injection molding; the inner blade tube 3 and the inner tube connector 4 are integrally formed by injection molding.

[0060] In this embodiment, by integrally injection molding the outer knife tube 1 and the outer tube connector 2 and integrally injection molding the inner knife tube 3 and the inner tube connector 4, the connection strength between the outer knife tube 1 and the outer tube connector 2 and the connection strength between the inner knife tube 3 and the inner tube connector 4 are ensured, thereby improving the working stability of the tool.

[0061] In other embodiments, the medical shaver tool further includes a driving device during actual use. Specifically, a mounting portion 23 that cooperates with the driving device is provided on the outer wall of the outer tube connector 2. The driving device can drive the inner knife tube 3 to rotate, thereby driving the knife head 7 to rotate.

[0062] The assembly process of a medical shaver provided by the present application may also include a driving device, and the specific steps are as follows:

[0063] Step 1: Fixedly connect the outer knife tube 1 to the outer tube connector 2, and fixedly connect the inner knife tube 3 to the inner tube connector 4.

[0064] Step 2: fix the first magnetic member 5 in the groove 22 of the outer tube connector 2 , and clamp the second magnetic member 6 in the clamping groove 42 of the inner tube connector 4 .

[0065] Step three: sleeve the outer knife tube 1 on the inner knife tube 3 so that the first limiting structure 21 of the outer tube connector 2 is engaged with the second limiting structure 41 of the inner tube connector 4, so that the outer tube connector 2 and the inner tube connector 4 are limitedly matched.

[0066] Step 4: elastically connect the connecting sleeve 9 and the inner tube connecting piece 4 through the elastic piece 8, so that the limiting part 91 on the connecting sleeve 9 abuts against the abutting part 43 on the inner tube connecting part 4, so that the connecting sleeve 9 and the inner tube connecting piece 4 can move synchronously.

[0067] Step 5: Fixedly connect the driving device to the mounting portion 23 on the outer tube connector 2.

[0068] Example 1

[0069] Please refer to Figure 1-3 The embodiment of the present application provides a medical shaver tool, comprising an outer knife tube 1, an outer tube connector 2, an inner knife tube 3, an inner tube connector 4, a first magnetic component 5 and a second magnetic component 6; the outer knife tube 1 is fixedly connected to the outer tube connector 2, and the inner knife tube 3 is fixedly connected to the inner tube connector 4; the outer tube connector 2 and the inner tube connector 4 are detachably connected, the first magnetic component 5 is fixedly arranged on the outer tube connector 2, and the second magnetic component 6 is fixedly arranged on the inner tube connector 4;

[0070] When the inner tube connector 4 and the outer tube connector 2 are in cooperation, the outer knife tube 1 is sleeved on the inner knife tube 3, the first end face of the inner tube connector 4 and the second end face of the outer tube connector 2 are arranged opposite to each other, and the magnetic direction of the first magnetic component 5 is opposite to the magnetic direction of the second magnetic component 6; under the action of the magnetic force of the first magnetic component 5 and the second magnetic component 6, there is no contact between the first end face and the second end face.

[0071] In this embodiment, the distance between the first end surface and the second end surface may be 0.5 mm, and the repulsive force between the first magnetic member 5 and the second magnetic member 6 may be 5N.

[0072] The first magnetic component 5 and the second magnetic component 6 are both neodymium magnets. The first magnetic component 5 is a block-shaped neodymium magnet, and there are four of them. The second magnetic component 6 is a ring-shaped neodymium magnet.

[0073] Specifically, the size of the first magnetic component 5 may be: φ8 mm×15 mm×1.5 mm, and the size of the second magnetic component 6 may be: φ8 mm×φ6.5 mm×1.5 mm.

[0074] Four grooves 22 are provided on the inner wall of the outer tube connector 2 , and a clamping groove 42 is provided on the inner tube connector 4 . Four neodymium magnets are sequentially arranged in the four grooves 22 , and the annular neodymium magnets are clamped in the clamping grooves 42 .

[0075] A first limiting structure 21 is arranged in the outer tube connecting member 2 , and a second limiting structure 41 matching the first limiting structure 21 is arranged on the inner tube connecting member 4 .

[0076] Specifically, the first limiting structure 21 is a plurality of circular protrusion structures, and the second limiting structure 41 is an annular protrusion structure. When the inner tube connector 4 is in cooperation with the outer tube connector 2, the plurality of circular protrusion structures can be clamped and connected with the annular protrusion structure, thereby realizing a detachable connection between the outer tube connector 2 and the inner tube connector 4.

[0077] In other embodiments, the first limiting structure 21 may be a plurality of circular protrusion structures, and the second limiting structure 41 may be an annular groove structure, and through the cooperation between the circular protrusion structure and the annular groove structure, a detachable connection between the outer tube connector 2 and the inner tube connector 4 is achieved.

[0078] The driving device is clamped on the mounting portion 23 of the outer tube connector 2. Under the drive of the driving device, the inner tube connector 4 and the inner knife tube 3 are driven to rotate, and then the knife head 7 is driven to rotate, thereby achieving the planing function of the target tissue.

[0079] Example 2

[0080] Please refer to Figure 1-3The difference between Example 2 and Example 1 is that an elastic member 8 and a connecting sleeve 9 are added in Example 2. The similarities between Example 2 and Example 1 are not repeated here, and only the differences between Example 2 and Example 1 are described.

[0081] On the basis of Example 1, a medical shaver tool provided in the embodiment of the present application further includes an elastic member 8 and a connecting sleeve 9, a limiting portion 91 is provided on the connecting sleeve 9, an abutting portion 43 is provided on the inner tube connecting portion 4, the connecting sleeve 9 and the inner tube connecting portion 4 are limitedly matched, one end of the elastic member 8 is fixedly connected to the connecting sleeve 9, and the other end of the elastic member 8 abuts against the inner tube connecting portion 4; under the action of the elastic member 8, the limiting portion 91 abuts against the abutting portion 43, thereby realizing the cooperation between the connecting sleeve 9 and the inner tube connecting portion 4, and the connecting sleeve 9 and the inner tube connecting portion 4 rotate synchronously under the action of the driving device.

[0082] When the connecting sleeve 9 is in cooperation with the inner tube connecting portion 4 , the direction of the elastic force exerted by the elastic member 8 on the inner tube connecting member 4 is opposite to the direction of the magnetic force exerted by the first magnetic member 5 on the second magnetic member 6 .

[0083] The distance between the first end face of the inner tube connector 4 and the second end face of the outer tube connector 2 can be 0.5mm, the repulsive force between the first magnetic part 5 and the second magnetic part 6 can be 5N, and the elastic force can be 5N. When the connecting sleeve 9 and the inner tube connecting part 4 are in cooperation, a force balance state is generated between the elastic force and the repulsive force, so that a gap is left between the first limiting structure 21 of the outer tube connector 2 and the second limiting structure 41 of the inner tube connector 4, thereby reducing the friction between the outer tube connector 2 and the inner tube connector 4, reducing the wear of the tool, and thereby improving the performance of the tool.

[0084] It should be noted that the above-mentioned sequence of the embodiments of the present application is for description only and does not represent the advantages and disadvantages of the embodiments. The above-mentioned specific embodiments of the present application are described. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0085] Each embodiment in this application is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device, equipment and storage medium embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0086] A person skilled in the art will appreciate that all or part of the steps for implementing the above embodiments may be accomplished by hardware, or may be instructed by a program. The program accomplished by the relevant hardware may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a disk, or an optical disk, etc.

[0087] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A medical planing tool, characterized in that: It comprises an outer knife tube (1), an outer tube connecting piece (2), an inner knife tube (3), an inner tube connecting piece (4), a first magnetic piece (5) and a second magnetic piece (6); The outer knife tube (1) is fixedly connected to the outer tube connector (2), and the inner knife tube (3) is fixedly connected to the inner tube connector (4); The outer tube connecting piece (2) is detachably connected to the inner tube connecting piece (4), the first magnetic piece (5) is fixedly arranged on the outer tube connecting piece (2), and the second magnetic piece (6) is fixedly arranged on the inner tube connecting piece (4); When the inner tube connector (4) and the outer tube connector (2) are in a matched state, the outer blade tube (1) is sleeved on the inner blade tube (3), the first end face of the inner tube connector (4) and the second end face of the outer tube connector (2) are arranged opposite to each other, and the magnetic direction of the first magnetic member (5) is opposite to the magnetic direction of the second magnetic member (6); under the action of the magnetic force of the first magnetic member (5) and the second magnetic member (6), the first end face and the second end face are not in contact with each other; It also comprises an elastic member (8) and a connecting sleeve (9), wherein the inner tube connecting member (4) and the connecting sleeve (9) are elastically connected via the elastic member (8); When the inner tube connector (4) is in a matched state with the connecting sleeve (9), the direction of the elastic force applied by the elastic member (8) on the inner tube connector (4) is opposite to the direction of the magnetic force applied by the first magnetic member (5) on the second magnetic member (6); The outer tube connector (2) is provided with a first limiting structure (21), and the inner tube connector (4) is provided with a second limiting structure (41) matching the first limiting structure (21); When the inner tube connector (4) and the connecting sleeve (9) are in cooperation, under the elastic force of the elastic member (8), the first limiting structure (21) and the second limiting structure (41) are not in contact with each other.

2. A medical shaver according to claim 1, characterized in that: The outer tube connector (2) is provided with a first limiting structure (21), and the inner tube connector (4) is provided with a second limiting structure (41) matching the first limiting structure (21); when the inner tube connector (4) is in a matched state with the outer tube connector (2), the first limiting structure (21) is slidably connected with the second limiting structure (41).

3. A medical shaver according to claim 1, characterized in that: When the inner tube connector (4) and the outer tube connector (2) are in a matched state, the repulsive force between the first magnetic component (5) and the second magnetic component (6) is 3N to 7N.

4. A medical shaver according to claim 1, characterized in that: When the inner tube connector (4) and the connecting sleeve (9) are in a matched state, the elastic force applied by the elastic member (8) on the inner tube connector (4) is 3N to 7N.

5. The medical shaver according to claim 1, characterized in that: The outer tube connecting piece (2) is provided with a groove (22), the first magnetic piece (5) is arranged in the groove (22), the inner tube connecting piece (4) is provided with a clamping groove (42), and the second magnetic piece (6) is clamped in the clamping groove (42).

6. The medical shaver according to claim 1, characterized in that: The outer diameter of the inner blade tube (3) is 0.30 mm to 0.60 mm smaller than the inner diameter of the outer blade tube (1).

7. The medical shaver according to claim 1, characterized in that: The outer knife tube (1) is provided with an inclined surface (11).

8. The medical shaver according to claim 1, characterized in that: It also comprises a cutter head (7), wherein the cutter head (7) is fixedly arranged at one end of the inner cutter tube (3), a chip suction hole (71) is arranged on the cutter head (7), and the inner cutter tube (3) and the chip suction hole (71) are in communication.

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