Medical planing cutter head with replaceable head
By designing a removable head to replace medical planer head, the problem that existing planer heads need to be used once due to the easy wear of the blades, achieving lower production and surgical costs.
Patent Information
- Application Number
- CN202421687896.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-07-16
AI Technical Summary
The existing medical planer heads are prone to wear and tear, and are usually used once, resulting in high surgical costs.
A medical planer head with a head replacement is designed, including the head and the main body, and the quick replacement of the head is achieved through a removable connection, and the main body can be reused.
By replacing the tool head parts without the need to replace the entire planer head, the manufacturing cost is significantly reduced, and surgical cost is reduced, saving more than 85% of the material.
Smart Images
Figure CN222929799U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of medical devices, and in particular to a replaceable head medical shaving cutter head. Background Art
[0002] Medical shaving is a medical technique used in surgery to cut, remove, trim, or alter bones, soft tissues, or other biological materials. Medical shaving technology plays an important role in the modern medical field. By providing precise cutting and trimming functions, it helps doctors handle bones and soft tissues more effectively during surgery, improving the accuracy and safety of the surgery.
[0003] In the related art, the shaving cutter head is usually used in combination with a shaving main unit and a main unit handle. By the relative rotation of the inner cutter head and the outer cutter head, and the meshing of the cutting edges with each other, the function of cutting tissues is achieved, and it is widely used in various surgeries. However, due to the easy wear of the cutting edges of the cutter head, the shaving cutter head is mostly disposable, which undoubtedly greatly increases the surgical cost. Summary of the Utility Model
[0004] In order to reduce the cost of medical shaving surgery, the present application provides the technical field of medical devices.
[0005] A replaceable head medical shaving cutter head provided by the present application adopts the following technical solution:
[0006] A replaceable head medical shaving cutter head includes a head, a main body, and a bearing. The head includes an outer cutter head, an inner cutter head, an inner cutter connecting piece, and an outer cutter connecting piece. The outer cutter head, the inner cutter head, the inner cutter connecting piece, and the outer cutter connecting piece are fixedly connected to the bearing in sequence. The main body includes an inner tube and an outer tube. The inner tube includes an inner cutter handle and an inner cutter rod. The outer tube includes an outer cutter handle and an outer cutter rod. The inner cutter handle is fixedly connected to the inner cutter rod. The outer cutter rod is fixedly connected to the outer cutter handle. An inner cutter connecting piece is detachably connected between the bearing and the inner cutter rod, and an outer cutter connecting piece is detachably connected between the bearing and the outer cutter rod.
[0007] By adopting the above technical solution, when the shaving cutter head works, the external shaving main unit drives the inner tube. The inner tube drives the inner cutter head to rotate through the inner cutter connecting piece, while the outer tube and the outer cutter head do not rotate. The relative rotation of the inner cutter head and the outer cutter head realizes the function of cutting soft tissues.
[0008] When the cutter head is worn, by removing the fixation of the inner cutter connecting piece between the bearing and the inner cutter rod, and removing the fixation of the outer cutter connection between the bearing and the outer cutter rod, and then removing the fixation between the head and the main body, and then only replacing the head component, the main body can be reused. This solution can save more than 85% of the materials, help reduce the manufacturing cost of the shaving cutter head, and thus reduce the cost of medical shaving surgery.
[0009] Optionally, an internal thread is provided on the outer tool connecting member, and the outer tool bar is threadedly connected to the outer tool connecting member.
[0010] By adopting the above technical solution, the outer tool connecting member is threadedly connected to the outer tool bar by means of threaded connection. Thus, by rotating the outer tool connecting member to disengage the outer tool connecting member from the outer tool handle, the outer tool head and the bearing can be disengaged from the main body, and thus the disassembly between the head and the main body can be quickly realized.
[0011] Optionally, an internal spline is provided on the inner tool connecting member, and an external spline is provided on the inner tool bar, and the internal spline cooperates with the external spline.
[0012] By adopting the above technical solution, when the inner tool bar rotates, the inner tool bar can drive the inner tool connecting member to rotate through the cooperation of the external spline and the internal spline. Thus, the inner tool connecting member drives the inner tool head to rotate through the bearing. At the same time, when the outer tool head disengages from the main body, the internal spline and the external spline can be quickly disengaged, facilitating the disengagement of the inner tool bar from the inner tool connecting member.
[0013] In summary, the present application includes at least one of the following beneficial technical effects:
[0014] 1. More than 85% of the materials can be saved, which helps to reduce the production cost of the planing tool head, and thus reduces the cost of medical planing surgery;
[0015] 2. When the outer tool head disengages from the main body, the internal spline and the external spline can be quickly disengaged, facilitating the disengagement of the inner tool bar from the inner tool connecting member;
[0016] 3. By rotating the outer tool connecting member to disengage the outer tool connecting member from the outer tool handle, the outer tool head and the bearing can be disengaged from the main body, and thus the disassembly between the head and the main body can be quickly realized. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present application;
[0018] Figure 2 is Figure 1 a partial enlarged schematic diagram of part A in
[0019] Figure 3 is a schematic diagram of the structure of the inner tool connecting member of an embodiment of the present application;
[0020] Figure 4 is a schematic diagram of the structure of the inner tool tube of an embodiment of the present application;
[0021] Figure 5 is Figure 4 an enlarged schematic diagram of part B in
[0022] In the figure, 1 is the head; 11 is the outer cutter head; 111 is the first notch; 12 is the inner cutter head; 121 is the second notch; 1211 is the vertical part; 1212 is the arc part; 13 is the inner cutter connecting piece; 131 is the internal spline; 14 is the outer cutter connecting piece; 2 is the main body; 21 is the inner tube; 211 is the inner cutter handle; 212 is the inner cutter rod; 2122 is the external spline; 22 is the outer tube; 221 is the outer cutter handle; 222 is the outer cutter rod; 3 is the bearing. Detailed implementation mode
[0023] The following will further elaborate on this application in conjunction with the attached Figure 1 - attached Figure 5 drawings.
[0024] An embodiment of this application is: a medical shaving cutter head with a replaceable head, referring to Figure 1 the drawings, which includes a head 1, a main body 2 and a bearing 3.
[0025] Referring to Figure 1 , Figure 2 and Figure 3 , the main body 2 includes an outer cutter head 11, an inner cutter head 12, an inner cutter connecting piece 13 and an outer cutter connecting piece 14. The four are welded to the bearing 3 in sequence. In this embodiment, the bearing 3 is set as a deep groove bearing. One end of the inner cutter head 12 is welded to the end face of the inner ring of the bearing 3, and one end of the outer cutter head 11 is welded to the outer ring of the bearing 3. The outer cutter head 11 is sleeved outside the inner cutter head 12 and the inner cutter head 12 is coaxially arranged with the outer cutter head 11. The inner cutter head 12 can rotate within the outer cutter head 11. The inner cutter head 12 connecting piece is located on the side of the bearing 3 away from the inner cutter head 12.
[0026] The end parts of the outer cutter head 11 and the inner cutter head 12 are respectively provided with a first notch 111 and a second notch 121. The end part of the inner cutter head 12 is exposed at the first notch 111. The second notch 121 includes two vertically arranged vertical parts 1211, and an arc part 1212 connecting the two is arranged between the two vertical parts 1211.
[0027] When the inner cutter head 12 and the cutter head rotate relatively, the second notch 121 can rotate within the second notch 121 along with the inner cutter head 12, thereby realizing the cutting function of the head 1.
[0028] Referring to Figure 3 and Figure 4 , the head 1 includes an inner tube 21 and an outer tube 22. The inner tube 21 includes an inner cutter handle 211 and an inner cutter rod 212, and the inner cutter handle 211 is fixedly connected to the inner cutter rod 212. The outer tube 22 includes an outer cutter handle 221 and an outer cutter rod 222, and the outer cutter rod 222 is fixedly connected to the outer cutter handle 221. The inner cutter rod 212 is placed inside the outer cutter rod 222 and the inner cutter rod 212 is coaxially arranged with the outer cutter rod 222.
[0029] Referring toFigure 3 , Figure 4 and Figure 5 , a detachable connection is provided between the bearing 3 and the inner cutter bar 212 by an inner cutter connecting member 13. In this embodiment, the inner cutter connecting member 13 is provided in a tubular shape, and one end of the inner cutter connecting member 13 is fixedly connected to the inner ring of the bearing 3. Refer to Figure 2 , Figure 4 and Figure 5 , an internal spline 131 is provided on the inner arc surface of the inner cutter connecting member 13, an external spline 2122 is provided on the outer arc surface of the inner cutter bar 212, the inner cutter bar 212 is inserted into the inner cutter connecting member 13, and the internal spline 131 cooperates with the external spline 2122 and abuts against each other.
[0030] When the inner cutter bar 212 rotates, the inner cutter bar 212 can drive the inner cutter connecting member 13 to rotate through the cooperation of the external spline 2122 and the internal spline 131, and then the inner cutter connecting member 13 drives the inner cutter head 12 to rotate through the bearing 3.
[0031] Refer to Figure 3 , Figure 4 and Figure 5 , a detachable connection is provided between the bearing 3 and the outer cutter bar 222 by an outer cutter connecting member 14. In this embodiment, the outer cutter connecting member 14 is provided in a tubular shape, one end of the outer cutter connecting member 14 is welded to the outer ring of the bearing 3, and the outer cutter connecting member 14 is placed outside the inner cutter connecting member 13 and coaxially arranged with the inner cutter connecting member 13. An internal thread is provided on the inner arc surface of the outer cutter connecting member 14, and the outer cutter bar 222 is threadedly connected to the outer cutter connecting member 14.
[0032] By rotating the outer cutter connecting member 14 to disengage the outer cutter connecting member 14 from the outer cutter bar 222, the outer cutter head 11 and the bearing 3 can be disengaged from the main body 2, realizing the disassembly between the head 1 and the main body 2.
[0033] The implementation principle of the embodiment of the present application is as follows: When this planing cutter head works, the drive shaft of an external planing main machine is fixed on the drive inner cutter handle 211, and then the inner tube 21 is driven to rotate by itself through the inner cutter handle 211. The inner tube 21 drives the inner cutter head 12 to rotate through the inner cutter connecting member 13. The outer tube 22 and the outer cutter head 11 do not rotate, and the relative rotation between the inner cutter head 12 and the outer cutter head 11 realizes the function of cutting soft tissues.
[0034] When replacing the head 1, by rotating the outer cutter connecting member 14, the fixation of the outer cutter connecting member 14 between the bearing 3 and the outer cutter bar 222 is cancelled. Subsequently, the internal spline 131 is separated from the external spline 2122 by canceling the connection between the inner cutter connecting member 13 and the inner cutter bar 212. Thus, the fixation between the head 1 and the main body 2 is cancelled.
[0035] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Identical components are denoted by the same reference numerals. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.
Claims
1. A medical planing tool head with a replaceable head, characterized in that: The invention comprises a head (1), a main body (2) and a bearing (3), wherein the head (1) comprises an outer blade head (11), an inner blade head (12), an inner blade connecting piece (13) and an outer blade connecting piece (14), wherein the outer blade head (11), the inner blade head (12), the inner blade connecting piece (13) and the outer blade connecting piece (14) are fixedly connected to the bearing (3) in sequence, and the main body (2) comprises an inner tube (21) and an outer tube (22), wherein the inner tube (21) comprises an inner blade handle (211) and an inner A knife rod (212), the outer tube (22) comprising an outer knife handle (221) and an outer knife rod (222), the inner knife handle (211) being fixedly connected to the inner knife rod (212), the outer knife rod (222) being fixedly connected to the outer knife handle (221), an inner knife connecting piece (13) being detachably connected between the bearing (3) and the inner knife rod (212), and an outer knife connecting piece (14) being detachably connected between the bearing (3) and the outer knife rod (222).
2. A medical shaver head with replaceable head according to claim 1, characterized in that: The outer knife connecting piece (14) is provided with an internal thread, and the outer knife rod (222) is threadedly connected to the outer knife connecting piece (14).
3. A medical shaver head with replaceable head according to claim 1, characterized in that: The inner knife connecting piece (13) is provided with an inner spline (131), the inner knife rod (212) is provided with an outer spline (2122), and the inner spline (131) matches the outer spline (2122).
4. The medical shaver head with replaceable head according to claim 1, characterized in that: The two ends of the inner ring of the bearing (3) are respectively fixedly connected to the inner cutter head (12) and the inner cutter connecting piece (13), and the two ends of the outer ring of the bearing (3) are respectively fixedly connected to the outer cutter head (11) and the outer cutter connecting piece (14).
5. A medical shaver head with replaceable head according to claim 4, characterized in that: The inner cutter head (12), the inner cutter connecting piece (13), the outer cutter head (11), and the outer cutter connecting frame are all welded to the bearing (3).
6. The medical shaver head with replaceable head according to claim 1, characterized in that: The bearing (3) is a deep groove bearing.
7. The medical shaver head with replaceable head according to claim 1, characterized in that: The ends of the outer cutter head (11) and the inner cutter head (12) are respectively provided with a first notch (111) and a second notch (121), and the end of the inner cutter head (12) is exposed at the first notch (111).
8. A replaceable medical shaver head (1) according to claim 7, characterized in that: The second notch (121) comprises two vertical portions (1211) arranged in parallel, and an arc portion (1212) connecting the two vertical portions (1211) is provided between the two vertical portions (1211).