Arthroscopic shaver assembly

Abstract

The utility model discloses a kind of arthroscopic gouging assemblies, including handle, motor, tool bit, knife shell and self-locking piece, motor is arranged in handle, the front end of handle is provided with connecting sleeve, the tail end of knife shell is arranged on connecting sleeve, and self-locking is carried out by self-locking piece, the tail end of tool bit is inserted on the rotating shaft of motor, self-locking piece includes the first circular clamping plate and the second circular clamping plate of symmetrical distribution, the inside of first circular clamping plate and second circular clamping plate is provided with circular groove, retaining ring in circular groove is provided on knife shell, circular groove is provided with the embedding groove corresponding with retaining ring in concave, the bottom of first circular clamping plate and second circular clamping plate is respectively provided with third circular clamping plate extending into connecting sleeve, third circular clamping plate end is provided with spring piece, connecting sleeve side wall is concave and is provided with lock slot corresponding with spring piece one by one, spring piece end is provided with lock block extending into lock slot, the component adopts split assembly structure, reduce maintenance cost, improve dismounting convenience.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an arthroscopic planing assembly. Background Technology

[0002] Early arthroscopic shaving handles used in surgery were often integrated with the blade, disposable, costly, and inefficient as they could not be rotated.

[0003] To reduce unnecessary medical costs, the planer handle and cutter head can be assembled as separate units, allowing for the reuse of the planer handle. Furthermore, to improve planing efficiency, a motor can be used to drive the rotation of the cutter head, but this increases the difficulty of connecting the planer handle and cutter head. The cutter head has various end specifications; to improve ease of use, it needs to be able to be quickly assembled and disassembled, requiring further improvements. Utility Model Content

[0004] The purpose of this invention is to provide an arthroscopic planing component that adopts a split assembly structure and improves the ease of assembly and disassembly.

[0005] To achieve this objective, the present invention adopts the following technical solution: An arthroscopic planing assembly includes: a handle, a motor, a cutter head, a cutter housing, and a self-locking component. The motor is disposed in the handle, and a connecting sleeve is provided at the front end of the handle. The connecting sleeve is coaxially aligned with the rotating shaft at the output end of the motor. The tail end of the cutter housing is disposed on the connecting sleeve and is self-locked by the self-locking component. The tail end of the cutter head is inserted into the rotating shaft of the motor and rotates with the rotation of the shaft. The self-locking component includes a first arc-shaped clamping plate and a second arc-shaped clamping plate symmetrically distributed on both sides of the cutter housing. The inner sides of the first and second arc-shaped clamping plates are respectively provided with arc-shaped grooves corresponding to the cutter housing. The cutter housing is provided with a retaining ring located in the arc-shaped groove. The arc-shaped groove is provided with an embedded groove corresponding to the retaining ring. The bottom of the first and second arc-shaped clamping plates is respectively provided with a third arc-shaped clamping plate extending into the connecting sleeve. The end of the third arc-shaped clamping plate is provided with a spring piece. The side wall of the connecting sleeve is provided with a locking groove corresponding to the spring piece. The end of the spring piece is provided with a locking block extending into the locking groove.

[0006] The outer side of the lock block is provided with a chamfered bevel.

[0007] The third arc-shaped clamping plate, spring sheet, and locking block are made of an integrated plastic structure.

[0008] There is a gap between the spring and the outer wall of the blade casing.

[0009] The outer wall of the third arc-shaped clamp plate is in contact with the inner wall of the connecting sleeve.

[0010] The outer radius of the first arc clamp is greater than the outer radius of the third arc clamp.

[0011] The handle is provided with a water inlet, and the handle is provided with a water flow channel communicating with the water inlet. The cutter head has a hollow inner cavity, and the tail end of the cutter head is open, while the front end is provided with a water outlet. The cutter head is connected to the water flow channel in the handle.

[0012] The motor shaft has a slot, and the tail end of the cutter head has a locking head that fits into the slot. The locking head has a flow hole in the radial direction for water to flow through.

[0013] The beneficial effects of this utility model are as follows: An arthroscopic planing assembly has a separate assembly structure for the handle and the cutter head, which allows the cutter head to be disassembled and replaced, reducing costs. The handle and the cutter head are connected and fixed by a self-locking component, resulting in a simple structure and improved ease of assembly and disassembly. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 yes Figure 1 A magnified view of part A in the middle; Figure 3 yes Figure 1 Exploded view; Figure 4 yes Figure 3 Split diagram of the self-locking component; The components are as follows: 1. Handle; 11. Inlet; 12. Water flow channel; 13. Sealing plate; 2. Connecting sleeve; 21. Locking groove; 3. Motor; 4. Shaft; 41. Slot; 5. Self-locking component; 51. First arc clamping plate; 52. Second arc clamping plate; 53. Third arc clamping plate; 54. Spring piece; 55. Locking block; 56. Chamfered bevel; 57. Embedded groove; 58. Arc groove; 6. Cutting head; 61. Outlet; 7. Cutting head shell; 8. Clamping head; 81. Flow hole; 9. Retaining ring. Detailed Implementation

[0015] The following is combined with Figures 1-4 The technical solution of this utility model will be further illustrated through specific embodiments.

[0016] like Figure 1 The arthroscopic planing assembly shown includes: a handle 1, a motor 3, a cutter head 6, a cutter housing 7, and a self-locking component 5. The motor 3 is located in the handle 1 and is powered by an external power source.

[0017] The motor 3 is housed in the handle 1. A connecting sleeve 2 is provided at the front end of the handle 1. The connecting sleeve 2 is aligned with the axis of the rotating shaft 4 at the output end of the motor 3. The tail end of the blade housing 7 is mounted on the connecting sleeve 2 and is self-locked by a self-locking component 5. In this embodiment, the self-locking component 5 includes a first arc-shaped clamping plate 51 and a second arc-shaped clamping plate 52 symmetrically distributed on both sides of the blade housing 7, as shown below. Figure 3 and Figure 4 As shown, it has a split structure, making it easy to assemble and disassemble.

[0018] The inner sides of the first arc clamping plate 51 and the second arc clamping plate 52 are respectively provided with arc grooves 58 corresponding to the blade shell 7 to clamp the lower part of the blade shell 7.

[0019] The blade housing 7 is provided with a retaining ring 9 located in an arc groove 58. An insert groove 57 corresponding to the retaining ring 9 is recessed within the arc groove 58. The engagement of the retaining ring 9 and the insert groove 57 provides axial positioning of the blade housing 7, improving the structural stability after assembly. Furthermore, the retaining ring 97 and the blade housing 7 can be welded together, resulting in high structural strength.

[0020] like Figure 2 and Figure 4 As shown, a third arc clamping plate 53 extending into the connecting sleeve 2 is respectively provided at the bottom of the first arc clamping plate 51 and the second arc clamping plate 52. In this embodiment, the outer wall of the third arc clamping plate 53 is fitted with the inner wall of the connecting sleeve 2 to cooperate and avoid radial separation of the first arc clamping plate 51 and the second arc clamping plate 52.

[0021] The outer wall radii of the first arc-shaped clamping plate 51 and the second arc-shaped clamping plate 52 are both larger than the outer wall radius of the third arc-shaped clamping plate 53, forming a step for axial positioning of the first arc-shaped clamping plate 51 and the second arc-shaped clamping plate 52. A spring piece 54 is provided at the end of the third arc-shaped clamping plate 53. A locking groove 21 corresponding to each spring piece 54 is recessed in the side wall of the connecting sleeve 2. A locking block 55 extending into the locking groove 21 is provided at the end of each spring piece 54 for self-locking.

[0022] The third arc-shaped clamping plate 53, the spring piece 54, and the locking block 54 are all made of integrated plastic, which is convenient for production. In addition, the first arc-shaped clamping plate 51 and the corresponding third arc-shaped clamping plate 53 are made of integrated plastic, and the third arc-shaped clamping plate 53 corresponding to the bottom of the second arc-shaped clamping plate 52 is also made of integrated plastic, so that the self-locking component 5 has only two independent parts, and the structure is simple.

[0023] In this embodiment, the outer side of the locking block 55 is provided with a chamfered bevel 56, such as... Figure 4 As shown, the locking block 55 can easily enter the connecting sleeve 22 downwards, making the assembly operation simple.

[0024] like Figure 2As shown, a gap is left between the spring piece 54 and the outer wall of the blade housing 7, allowing the spring piece 54 to bend inward under force. During disassembly, a thin rod is inserted into the locking groove 219 to drive the spring piece 54 to move inward, causing the locking block 55 to disengage from the locking groove 21. The self-locking member 5 can then be pulled upward to remove the blade housing 7, allowing for the replacement of the blade head 6. The operation is quick and easy.

[0025] In addition, the handle 1 is provided with a water inlet 11, and the handle 1 is provided with a water flow channel 12 that communicates with the water inlet 11. The cutter head 6 has a hollow inner cavity, and the tail end of the cutter head 6 is open, while the front end is provided with a water outlet 61. The cutter head 6 is in communication with the water flow channel 12 in the handle 1.

[0026] Here, the water inlet 11 connects to external saline solution. During the planing process, the water flows through the inlet 11 and the water channel 12 to the end of the cutter head 6 for wound cleaning. The motor 3's shaft 4 has a slot 41, and the cutter head 6 has a matching chuck 8 that fits into the slot 41. The chuck 8 has a radial flow hole 81 for water to pass through. The chuck 8 and slot 41 facilitate subsequent replacement of the cutter head 6. To prevent the saline solution from affecting the motor 3, the motor 3 is sealed within the handle 1's cavity by a sealing plate 13.

[0027] The blade housing 7 has a hollow inner cavity, and the blade head 6 is located inside the blade housing 7. The blade head 6 rotates relative to the blade housing 7 without contacting it during rotation. During installation, first insert the blade head 6 into the slot 41 of the rotating shaft 4 via the clamp 8, then insert the tail end of the blade housing 7 into the connecting sleeve 2, and finally lock the blade housing 7 and the connecting sleeve 2 together using the self-locking member 5. The clamp 8 can be detachably connected to the blade head 6, or it can be welded together as needed.

[0028] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. An arthroscopic planing assembly, characterized in that, include: The device comprises a handle, a motor, a cutting head, a cutting head, a cutting head, and a self-locking component. The motor is housed in the handle, and a connecting sleeve is located at the front end of the handle. The connecting sleeve is coaxial with the shaft at the output end of the motor. The tail end of the cutting head is mounted on the connecting sleeve and is self-locked by the self-locking component. The tail end of the cutting head is inserted into the shaft of the motor and rotates with the shaft. The self-locking component includes a first arc-shaped clamping plate and a second arc-shaped clamping plate symmetrically distributed on both sides of the cutting head. The inner sides of the first and second arc-shaped clamping plates are respectively provided with arc-shaped grooves corresponding to the cutting head. The cutting head has a retaining ring located in the arc-shaped groove. The arc-shaped groove has an embedded groove corresponding to the retaining ring. The bottom of the first and second arc-shaped clamping plates is provided with a third arc-shaped clamping plate extending into the connecting sleeve. The end of the third arc-shaped clamping plate is provided with a spring piece. The side wall of the connecting sleeve has a locking groove corresponding to the spring piece. The end of the spring piece is provided with a locking block extending into the locking groove.

2. The arthroscopic planing assembly according to claim 1, characterized in that, The outer side of the lock block is provided with a chamfered bevel.

3. The arthroscopic planing assembly according to claim 1, characterized in that, The third arc-shaped clamping plate, spring clip, and locking block adopt an integrated plastic structure.

4. The arthroscopic planing assembly according to claim 1, characterized in that, A gap is left between the spring and the outer wall of the blade casing.

5. The arthroscopic planing assembly according to claim 1, characterized in that, The outer wall of the third arc-shaped clamp plate fits against the inner wall of the connecting sleeve.

6. The arthroscopic planing assembly according to claim 1, characterized in that, The outer radius of the first arc clamp is greater than the outer radius of the third arc clamp.

7. The arthroscopic planing assembly according to claim 1, characterized in that, The handle is provided with a water inlet, and the handle is provided with a water flow channel communicating with the water inlet. The cutter head has a hollow inner cavity, and the tail end of the cutter head is open, while the front end is provided with a water outlet. The cutter head is connected to the water flow channel in the handle.

8. The arthroscopic planing assembly according to claim 7, characterized in that, The motor shaft is provided with a slot, and the tail end of the cutter head is provided with a locking head that fits in the slot. The locking head has a flow hole in the radial direction for water to flow through.

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