Polishing tool

Abstract

The utility model discloses a polishing tool. The polishing tool comprises an outer sleeve, a transmission part and a polishing part. The transmission part is composed of a transmission rod and a cam assembly, and the polishing part is composed of a movement assembly and a polishing device. The outer sleeve is of a hollow tubular structure, the polishing device is connected with the end, outside the outer sleeve, of the movement assembly, the other end of the movement assembly is connected with the cam assembly in the outer sleeve, and the movement assembly is embedded in a groove in the inner wall of the outer sleeve. A spherical assembly is arranged at the end, connected with the cam assembly, of the movement assembly and embedded into a curved groove around the side face by a circle in the cam assembly. According to the polishing tool, rotary motion can be changed into vertical motion through constraint of the side face groove of the cam assembly and the inner wall groove of the outer sleeve, the working efficiency of the operation polishing link is improved to a great extent, the problem of errors in the manual polishing process can be effectively solved, and the polishing efficiency is improved. And the body health and life safety of the patient are protected.

Description

Technical Field

[0001] The utility model relates to the field of medical surgery, in particular to a grinding tool. Background Art

[0002] At present, with the continuous advancement of science and technology, medical technology has become more and more mature. The emergence and promotion of intervertebral fusion technology has brought great convenience to the majority of patients with lumbar disease.

[0003] In the current intervertebral fusion medical surgery, after removing the diseased tissue (such as nucleus pulposus, annulus fibrosus, etc.) between the diseased vertebrae, the surgeon will polish the cartilage plate connected to the original diseased tissue to ensure that after the subsequent implantation of the bone fusion device (such as the patient's own bone), the patient's vertebral bones can fuse and grow smoothly. In the process of polishing the intervertebral cartilage plate, the current technology is generally for the surgeon to perform manual polishing with special instruments. This method takes a long time and is less efficient, which has a serious impact on the entire time-sensitive surgical process. This method is extremely challenging for the surgeon's professional level. Once problems such as hand slippage or force control errors occur, it will pose an extremely serious safety threat or even life-threatening danger to the patient.

[0004] Therefore, how to efficiently and safely polish the cartilage plate during intervertebral fusion surgery is an urgent problem to be solved. Utility Model Content

[0005] The utility model provides a grinding tool to partially solve the above problems existing in the prior art.

[0006] The utility model adopts the following technical solutions:

[0007] The utility model provides a grinding tool, which comprises: an external sleeve, a transmission component, and a grinding component, wherein the transmission component is composed of a transmission rod and a cam assembly, and the grinding component is composed of a motion component and a grinding device;

[0008] The outer sleeve is a hollow tubular structure, the grinding component is connected to the cam assembly of the transmission component through one end of the motion assembly inside the outer sleeve, the grinding component is connected to the grinding device outside the outer sleeve through the other end of the motion assembly, and the other end of the cam assembly is connected to one end of the transmission rod inside the outer sleeve;

[0009] A spherical component is provided at one end of the motion component, and the spherical component is embedded in a non-circular groove provided on the side surface of the cam component and surrounding the side surface;

[0010] The moving component is embedded in a groove on the inner wall of the outer sleeve.

[0011] Optionally, when the inner wall of the outer sleeve is provided with two grooves, the two grooves are centrally symmetrically arranged on the inner wall of the outer sleeve.

[0012] Optionally, the groove provided on the inner wall of the outer sleeve has a rectangular parallelepiped structure.

[0013] Optionally, the motion component is composed of a first component and a second component, one end of the first component is provided with the spherical component, the other end of the first component is connected to one end of the second component, and the other end of the second component is connected to the polishing device;

[0014] The moving component is embedded in the groove on the inner wall of the outer sleeve through the first component.

[0015] Optionally, when the inner wall of the outer sleeve is provided with two grooves, the first component is composed of two embedded components;

[0016] The two embedded components are respectively embedded in the two grooves on the inner wall of the external sleeve. One end of the two embedded components is respectively provided with the spherical component, and the other end of the two embedded components is connected to the second component.

[0017] Optionally, the second component is cylindrical in shape.

[0018] Optionally, the cam assembly is cylindrical in shape.

[0019] Optionally, the non-annular groove provided on the side surface of the cam assembly and surrounding the side surface is a groove that is curved and surrounds the side surface of the cam assembly.

[0020] Optionally, the grinding device is connected to the motion component by a threaded connection.

[0021] Optionally, the polishing device is provided with polishing particles.

[0022] As can be seen from the foregoing, the grinding tool provided by this utility model, through the constraints of the curved grooves on the side of the cam assembly and the grooves on the inner wall of the external sleeve, converts the rotational motion of the transmission rod into the reciprocating up and down motion of the grinding device, thereby replacing manual grinding. In practical applications, this tool can greatly improve the efficiency of the grinding process during intervertebral fusion surgery. Furthermore, the high precision and controllability of the mechanical motion effectively avoids the errors that may occur during manual grinding, effectively protecting the health and safety of the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0024] Figure 1 A schematic diagram of the grinding tool provided in the present invention;

[0025] Figure 2 A schematic diagram of a side cross-section of the grinding tool provided in the present invention;

[0026] FIG3(a) and FIG3(b) are schematic diagrams of the grinding tool provided in the present invention during actual operation;

[0027] Figure 4 Schematic diagram of the grinding tools with different component structures provided in the present invention;

[0028] Figure 5 This is a top view of the grinding tool when there are three spherical components provided in the present invention;

[0029] in, Figure 1 101 refers to the outer sleeve of the grinding tool, 102 refers to the transmission rod in the transmission component, 103 refers to the cam assembly in the transmission component, 104 refers to the spherical assembly in the motion assembly, 105 refers to the first assembly in the motion assembly, 106 refers to the second assembly in the motion assembly, 107 refers to the grinding device in the grinding component, 108 refers to the transmission component composed of 102 transmission rod and 103 cam assembly, 109 refers to the motion component composed of 104 spherical assembly, 105 first assembly, and 106 second assembly, 110 refers to the grinding component composed of 109 motion assembly and 107 grinding component;

[0030] Figure 2 Reference numeral 201 denotes an outer sleeve of a grinding tool, reference numeral 202 denotes a transmission rod in a transmission component, reference numeral 203 denotes a cam assembly in a transmission component, reference numeral 204 denotes a spherical assembly in a motion assembly, reference numeral 205 denotes a first assembly in a motion assembly, reference numeral 206 denotes a second assembly in a motion assembly, and reference numeral 207 denotes a grinding device in a grinding component.

[0031] Figure 4401 refers to the outer sleeve of the grinding tool, 402 refers to the transmission rod in the transmission component, 403 refers to the cam assembly in the transmission component, 404 refers to the spherical assembly in the motion component, 405 refers to the long strip assembly with a small curvature change that replaces the original first assembly and the original second assembly in the motion component, 406 refers to the grinding device in the grinding component, 407 refers to the transmission component composed of the 402 transmission rod and the 403 cam assembly, 408 refers to the motion component composed of the 404 spherical assembly and the 405 long strip assembly, and 409 refers to the grinding component composed of the 408 motion component and the 406 grinding component;

[0032] Figure 5 501 refers to the outer sleeve of the grinding tool, 502 refers to the transmission rod, 503 refers to the cam assembly, and 504 refers to the ball assembly. DETAILED DESCRIPTION

[0033] To make the purpose, technical solutions, and advantages of the present invention more clearly apparent, the present invention will be described clearly and completely below in conjunction with specific embodiments of the present invention and the corresponding drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0034] With the continuous advancement of medical technology, intervertebral fusion surgery has become an effective treatment for lumbar diseases in the current medical field. During normal intervertebral fusion surgery, professional physicians will polish the surface of the adjacent vertebral end plates after removing damaged tissues such as the nucleus pulposus and annulus fibrosus to ensure that the bone fusion material implanted during subsequent surgery can achieve good fusion and stable growth between the two vertebrae. In the polishing process, current technical means usually rely on professional doctors to manually operate special tools to polish the surgical site. This polishing method is inefficient and extremely tests the doctor's technical level and strength control. Once an operational error or inaccurate force control occurs, it may pose a threat to the patient's health and even life safety.

[0035] In order to solve the problems of low efficiency in grinding cartilage plates in intervertebral fusion surgery and lack of strict guarantee of surgical safety in the prior art, the utility model provides a grinding tool, which includes: an external sleeve, a transmission component, and a grinding component. The transmission component is composed of a transmission rod and a cam assembly, and the grinding component is composed of a motion component and a grinding device. Figure 1 shown.

[0036] Figure 1 This is a schematic diagram of the grinding tool provided in the present utility model.

[0037] according to Figure 1 As shown, the outer sleeve 101 of the grinding tool is a hollow tubular structure. The transmission rod 102 in the transmission component 108 is inserted from the top of the outer sleeve 101 and is connected to the cam assembly 103 inside the outer sleeve 101. The transmission rod 102 and the cam assembly 103 are combined to form the transmission component 108 of the grinding tool. One end of the transmission rod 102 is connected to a preset rotary motor outside the outer sleeve 101. When the rotary motor is working normally, it drives the transmission rod 102 to rotate, and then the transmission rod 102 drives the cam assembly 103 to perform the same rotational motion. The cam assembly 103 is a cylindrical structure as a whole, and is provided with the following on the side of the cam assembly 103. Figure 1 The groove on the side of the cam assembly 103 is used to embed the spherical assembly 104 in the motion assembly 109 into the groove so that the cam assembly 103 and the motion assembly 109 can be connected by a sliding groove.

[0038] The 109 motion component in the 110 grinding part is composed of the spherical component 104, the first component 105, and the second component 106 connected in sequence, as shown in FIG. Figure 1 As shown, spherical component 104 is connected to the inner side of the top end of first component 105, and the inner side of the bottom end of first component 105 is connected to second component 106. The inner wall of outer sleeve 101 is provided with the same number of grooves as the first component 105 in motion component 109. The grooves in the inner wall of outer sleeve 101 are designed to allow first component 105 in motion component 109 to fit within the grooves in the inner wall of outer sleeve 101, constraining first component 105 to reciprocating up and down motion when driven by spherical component 104. Due to the fixed connection between spherical component 104 and first component 105, and the directional constraint of first component 105 by the grooves in the inner wall of outer sleeve 101, spherical component 104 can only move up and down along the curved grooves on the side of cam component 103 when cam component 103 rotates. The distance of this up and down motion is determined by the distance between the highest and lowest points of the curved grooves on the side of cam component 103.

[0039] The lower end of the first component 105 is connected to the upper end of the second component 106, as shown in FIG. Figure 1 As shown in the figure, the first component 105 of the two rectangular components is fixedly connected to the second component 106 of the cylindrical structure, and the second component 106 is connected to the grinding device 107, so that the up and down repeated movement of the spherical component 104 is transmitted step by step to the grinding device 107. Figure 1 It is not obvious as shown in the Figure 2 .

[0040] Figure 2 It is a schematic diagram of a side cross-section of the grinding tool provided in the present invention.

[0041] like Figure 2 As shown in FIG, the inner wall of the outer sleeve 201 of the hollow tubular structure is provided with grooves having the same number as the first component 205. Figure 2 Since the first component 205 is composed of two rectangular components, two rectangular grooves are set up on the inner wall of the outer sleeve 201. The two grooves are centrally symmetrical on the inner wall of the outer sleeve 201. Figure 1 Neutralization Figure 2 Taking the rectangular structure of the first component 205 shown in the figure as an example, the length, width and height of the inner wall groove of the outer sleeve 201 should all be slightly larger than the corresponding length of the first component 205, and the straight-line distance between the upper end point and the lower end point of the inner wall groove on the inner wall of the outer sleeve 201 should be slightly larger than the sum of the length of the first component 205 and the distance between the highest point and the lowest point of the curved groove on the side of the cam component 203, so as to ensure that when the first component 205 is driven by the spherical component 204 and moves up and down repeatedly, it will not be restricted in the up and down movement distance due to the short length of the groove.

[0042] In summary, the overall working mode of the grinding tool provided by the present invention is that a preset rotary motor drives the transmission rod to perform a rotational motion, and the transmission rod drives the cam assembly to perform the same rotational motion. Because the first component is constrained by the inner wall of the external sleeve, the spherical component moves up and down repeatedly along the side curved groove of the rotating cam assembly, thereby driving the first component to perform the same up and down repeated motion. The first component drives the second component connected to the grinding device to perform the same repeated motion, and the grinding device grinds the target object (such as the intervertebral cartilage plate) by repeatedly moving up and down. The above-mentioned overall motion process can be specifically referred to Figures 3(a) and 3(b).

[0043] FIG3( a ) and FIG3 ( b ) are schematic diagrams of the grinding tool provided in the present invention during actual operation.

[0044] As shown in Figure 3(a) and Figure 3(b), the internal motion changes of the grinding tool during actual work can be understood as: Figure 3(a) to Figure 3(b) Or from Figure 3(b) to Figure 3(a) The spherical component in the grinding tool can move up and down in the curved groove on the side of the convex component as the convex component rotates, thereby driving the first component to move up and down, so that the grinding device at the bottom moves up and down together, thereby achieving grinding of the target object.

[0045] It should be noted that in the above content and illustrations, the cam assembly, the first assembly, the second assembly, and the inner wall groove of the outer sleeve are only selected for the convenience of understanding and introduction. Figure 1 The structure shown in (the cam assembly is a cylindrical structure, the first assembly is a rectangular parallelepiped structure, the second assembly is a cylindrical structure, and the inner wall groove of the outer sleeve is a rectangular parallelepiped structure). In this utility model, the specific structures of the cam assembly, the first assembly, the second assembly, and the inner wall groove of the outer sleeve are not strictly limited and can be flexibly adjusted according to actual conditions and cost requirements. For grinding tools with different assembly structures, please refer to Figure 4 .

[0046] Figure 4 Schematic diagram of the grinding tools with different component structures provided in the present invention.

[0047] like Figure 4 In the grinding tool shown, the 403 cam assembly is a rectangular parallelepiped structure, and the groove on the side of the 403 cam assembly is still a curved groove around the side. Figure 4 In the polishing tool described in the preceding text, the connection between the first and second components of the motion assembly 408 is replaced by a slightly curved elongated component 405, which is directly connected to the spherical component 404 and the polishing device 406. When the polishing tool is in operation, a portion of the elongated component 405, identical to the original first component, is embedded in a groove on the inner wall of the outer sleeve 401. It should also be noted that, in the present invention, changes to the first component of the motion assembly result in corresponding changes in the shape and structure of the groove on the inner wall of the outer sleeve, thereby constraining the motion assembly to move in the left-right direction and performing only reciprocating up-and-down motion.

[0048] Figure 4 The content shown is only used to reflect that the cam assembly, the first assembly, the second assembly, and the inner wall groove of the external sleeve in the grinding tool are non-limiting. The specific structure and shape of each component and the inner wall groove can be arbitrarily set under the premise of satisfying the left and right direction constraint effect on the grinding device.

[0049] In addition, it should be noted that in the above content and legends, the number of spherical components in the motion component and the number of first components connected to the spherical components are only selected for the convenience of understanding and introduction. Figure 1 The number shown in (two spherical components and two first components of rectangular structure). In this utility model, there is no strict limit on the number of spherical components in the motion component and the number of first components, which can be flexibly adjusted according to actual conditions and cost requirements. For grinding tools with different numbers of spherical components, please refer to Figure 5 .

[0050] Figure 5 This is a top view of the grinding tool when the number of spherical components provided in the utility model is three.

[0051] like Figure 5 As shown, when there are three spherical assemblies 504, the angles between the lines connecting the three spherical assemblies 504 and the inner center of the outer sleeve 501 in the side grooves of the cam assembly 503 are 120°. It should also be noted that when the number of spherical assemblies in the grinding tool changes, the curvature of the cam assembly's side grooves is also adjusted accordingly to ensure that each spherical assembly is at the same horizontal height during normal operation of the grinding tool, ensuring the uniform movement of the various components within the grinding tool.

[0052] In addition, in the present invention, the connection between the grinding device and the motion component is a detachable connection. In the face of different application scenarios and actual conditions, the grinding device can choose different styles. The present invention does not strictly limit the specific style and type of the grinding device. Figure 1 As an example, Figure 1 The connection between the grinding device and the second component of the motion assembly can be a threaded connection or other detachable connection method, allowing for replacement in different application scenarios. The detachable connection between the grinding device and the motion assembly effectively improves the practicality and flexibility of the grinding tool, while also reducing the time required for tool replacement to a certain extent, thereby improving surgical efficiency.

[0053] From the above content, it can be seen that in the present invention, the grinding tool is constrained by the side curved grooves of the cam assembly and the grooves on the inner wall of the external sleeve, so that the rotational motion is converted into the up and down repetitive motion of the grinding device, thereby realizing the use of high-precision and high-efficiency mechanical motion to replace manual grinding, greatly improving the work efficiency of the grinding link in intervertebral fusion surgery, and due to the high precision and high controllability of the mechanical motion, it can effectively avoid the mistakes that may occur during manual grinding, strictly protecting the physical health and life safety of the patient on the operating table.

[0054] The various embodiments of this utility model are described in a progressive manner. Similar parts between the various embodiments can be referred to in conjunction with each other. Each embodiment focuses on the differences between the other embodiments. In particular, the system embodiment is generally similar to the method embodiment, so the description is relatively simple. For relevant parts, refer to the partial description of the method embodiment.

[0055] The above description is merely an embodiment of the present invention and is not intended to limit the present invention. It will be apparent to those skilled in the art that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of the claims of this application.

Claims

1. A grinding tool, characterized in that: The grinding tool comprises: an external sleeve, a transmission component, and a grinding component, wherein the transmission component is composed of a transmission rod and a cam assembly, and the grinding component is composed of a motion assembly and a grinding device; The outer sleeve is a hollow tubular structure, the grinding component is connected to the cam component of the transmission component in the tube of the outer sleeve through one end of the motion component, the grinding component is connected to the grinding device outside the outer sleeve through the other end of the motion component, and the other end of the cam component is connected to one end of the transmission rod in the tube of the outer sleeve; A spherical component is provided at one end of the motion component, and the spherical component is embedded in a non-circular groove around the side surface of the cam component; The moving assembly is embedded in a groove on the inner wall of the outer sleeve.

2. The grinding tool according to claim 1, characterized in that: When the inner wall of the outer sleeve is provided with two grooves, the two grooves are centrally symmetrically arranged on the inner wall of the outer sleeve.

3. The grinding tool according to claim 1 or 2, characterized in that: The groove arranged on the inner wall of the outer sleeve is in a rectangular parallelepiped structure.

4. The grinding tool according to claim 1, characterized in that: The motion component is composed of a first component and a second component, one end of the first component is provided with the spherical component, the other end of the first component is connected to one end of the second component, and the other end of the second component is connected to the polishing device; The moving component is embedded in the groove of the inner wall of the outer sleeve through the first component.

5. The grinding tool according to claim 4, characterized in that: When the inner wall of the outer sleeve is provided with two grooves, the first component is composed of two embedded components; The two embedded components are respectively embedded in the two grooves of the inner wall of the outer sleeve, one end of the two embedded components is respectively provided with the spherical component, and the other end of the two embedded components is connected to the second component.

6. The grinding tool according to claim 4, characterized in that: The second component is in a cylindrical shape.

7. The grinding tool according to claim 1, characterized in that: The cam assembly is in a cylindrical shape.

8. The grinding tool according to claim 1, characterized in that: The non-circular groove arranged on the side surface of the cam component and surrounding the side surface is a groove which surrounds the side surface of the cam component in a curved line.

9. The grinding tool according to claim 1, characterized in that: The grinding device is connected to the moving component by threaded connection.

10. The grinding tool according to claim 1, characterized in that: The grinding device is provided with grinding particles.

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