A retractable electrosurgical tip
Patent Information
- Application Number
- CN202520782541.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-23
- Publication Date
- 2026-09-01
- Estimated Expiration
- 2035-04-23
AI Technical Summary
但是，由于在对患者不同位置进行手术时，需要对电刀头的位置进行调节，但是现有的调节一般是通过在电刀手柄内部设置丝杆传动，或者在刀杆与刀柄之间通过螺纹来接，来进行调节，调节不便，使用效果差，并且在调节过程中，刀杆与电刀手柄内部的导电元件会产生相对移动，进而容易导致刀杆与导电元件接触不良，影响电刀头接收到的高频电流稳定性，使用效果差
1、通过弹簧的弹力可推动锁止环对弹性夹持块挤压，使得两个弹性夹持块闭合将位置调节后的第一刀杆固定住，调节方便，提高使用效果。
Smart Images
Figure CN224699258U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electric knife tip technology, and in particular to a retractable electric knife tip. Background Technology
[0002] A medical electrosurgical unit is an electrosurgical device that uses a high-frequency current to cut, coagulate, or ablate biological tissues, replacing traditional mechanical scalpels. It offers advantages such as precise operation and reduced intraoperative bleeding.
[0003] Existing electrosurgical heads typically consist of a shank connected to a handle. The handle is connected to an external power source via a wire, transmitting high-frequency current from the external power source to the head through the shank for surgical procedures. However, adjusting the head's position is necessary for different surgical sites. Current methods typically involve a lead screw drive within the handle or a threaded connection between the shank and handle, which are inconvenient, ineffective, and can lead to poor contact between the shank and conductive components during adjustment. This affects the stability of the high-frequency current received by the head, resulting in poor performance. Therefore, we propose a retractable electrosurgical head. Utility Model Content
[0004] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a retractable electric knife head.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a retractable electric knife head is designed, including a first knife bar and a second knife bar. One end of the first knife bar is connected to a knife head, and the side of one end of the second knife bar is fixed to the electric knife handle by a mounting ring. A receiving groove is provided at one end of the second knife bar, and one end of the first knife bar extends into the receiving groove. Two elastic clamping blocks are symmetrically installed at one end of the second tool holder. Each elastic clamping block is arc-shaped, and one end of each elastic clamping block opens outward symmetrically. When the two elastic clamping blocks are in contact at their close ends, a cylindrical cavity is formed between them. The inner wall of the cylindrical cavity abuts against the outer surface of the first tool holder. A locking ring is slidably connected to one side of the second tool bar. One end of each locking ring abuts against the outer surface of the elastic clamping block. A connecting sleeve is installed on one edge of the locking ring. The connecting sleeve is fitted onto the side of the second tool bar, and a receiving space is formed between the inner wall of the connecting sleeve and the outer surface of the second tool bar. A spring is fitted onto the side of the second tool bar. The spring is located in the receiving space, and one end of the spring abuts against one end of the locking ring. The other end of the spring abuts against the end of the mounting ring. A conductive end is coaxially mounted inside the receiving groove, and a conductive connection groove is opened at one end of the first tool bar. When one end of the first tool bar extends into the receiving groove, one end of the conductive end extends into the conductive connection groove. An electrical connecting piece is installed at one end inside the conductive connecting groove. Several elastic conductive pieces are connected to the side of the electrical connecting piece. Each elastic conductive piece is arc-shaped, and a conductive groove is formed between the several elastic conductive pieces. One end of the conductive end extends into the conductive groove and contacts the inner surface of the elastic conductive piece.
[0006] Preferably, the inner wall of the conductive connection groove is electrically connected to the cutting head.
[0007] Preferably, the end of the inner wall of the locking ring closest to the elastic clamping block is set as an inclined surface.
[0008] Preferably, a limit ring is installed at one end of the outer surface of each elastic clamping block, and one end of the locking ring abuts against the side of the limit ring.
[0009] Preferably, a conductive silicone pad is installed on the inner wall of the conductive connection groove, and the inner surface of the conductive silicone pad is connected to the outer surface of the elastic conductive sheet.
[0010] Preferably, one end of each elastic conductive sheet is connected to an arc-shaped connecting sheet via an elastic connecting sheet. The arc-shaped connecting sheet extends outside the conductive connecting groove, and a connecting ring is installed at the end of the first cutter bar away from the cutter head. An annular groove is opened inside the connecting ring. An arc-shaped limiting block is installed on the side of each arc-shaped connecting sheet, and one side of each arc-shaped limiting block extends into the annular groove.
[0011] Preferably, both the first and second tool holders have an insulating protective layer on their outer surfaces.
[0012] The design scheme proposed in this utility model has the following beneficial effects in application: 1. The spring force can push the locking ring to squeeze the elastic clamping block, so that the two elastic clamping blocks close and fix the first tool bar after the position is adjusted, which is convenient for adjustment and improves the use effect.
[0013] 2. The elasticity of the conductive sheet allows for full contact with the conductive end, ensuring that the conductive end can still stably transmit current to the cutter head when the position of the first cutter bar is adjusted, thus improving the performance. Attached Figure Description
[0014] Figure 1 The structure of this utility model is dispersed Figure 1 ; Figure 2 The structure of this utility model is dispersed Figure 2 ; Figure 3This is a schematic diagram of the first tool holder and elastic conductive sheet structure of this utility model; Figure 4 This is a schematic diagram of the second tool holder, clamping block, and connecting sleeve structure of this utility model; Figure 5 This is a side sectional view of the second tool holder structure of this utility model; Figure 6 This is a side view of the connection structure between the second tool holder and the electric knife of this utility model; Figure 7 This is a cross-sectional view of the connection structure between the first tool holder and the conductive end of this utility model.
[0015] In the diagram: 1. Cutting head; 2. First cutting bar; 3. Elastic conductive sheet; 4. Electrical connecting sheet; 5. Arc-shaped connecting sheet; 6. Elastic connecting sheet; 7. Connecting ring; 8. Conductive connecting groove; 9. Elastic clamping block; 10. Connecting sleeve; 11. Second cutting bar; 12. Mounting ring; 13. Annular groove; 14. Arc-shaped limiting block; 15. Spring; 16. Locking ring; 17. Receiving groove; 18. Conductive end; 19. Conductive silicone pad; 20. Limiting ring. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0017] Reference Figures 1-7 A retractable electrosurgical head includes a first blade shank 2 and a second blade shank 11. One end of the first blade shank 2 is connected to a blade head 1. One side of the second blade shank 11 is fixed to the electrosurgical handle by a mounting ring 12. A receiving groove 17 is formed at one end of the second blade shank 11, and one end of the first blade shank 2 extends into the receiving groove 17. The first blade shank 2 is installed in the second blade shank 11, and then the second blade shank 11 is connected to the electrosurgical head. Figure 6 As shown, the blade 1 can be installed, and then surgery can be performed on the patient through the blade 1.
[0018] like Figure 2 and Figure 6 As shown, two elastic clamping blocks 9 are symmetrically installed at one end of the second tool bar 11. Each elastic clamping block 9 is arc-shaped, and one end of the two elastic clamping blocks 9 is symmetrically opened outward. When the two elastic clamping blocks 9 are in contact at their close ends, a cylindrical cavity is formed between them. The inner wall of the cylindrical cavity abuts against the outer surface of the first tool bar 2. The first tool bar 2 can be fixed on the second tool bar 11 by means of the elastic clamping blocks 9, which is convenient for fixing.
[0019] like Figure 4 and Figure 5As shown, a locking ring 16 is slidably connected to one end of the second tool bar 11. One end of each locking ring 16 abuts against the outer surface of the elastic clamping block 9. A connecting sleeve 10 is installed on one edge of the locking ring 16. The connecting sleeve 10 is fitted onto the side of the second tool bar 11, and a receiving space is formed between the inner wall of the connecting sleeve 10 and the outer surface of the second tool bar 11. A spring 15 is fitted onto the side of the second tool bar 11, located within the receiving space. One end of the spring 15 abuts against one end of the locking ring 16, and the other end of the spring 15 abuts against the end of the mounting ring 12. In actual use, through… The elastic force of spring 15 can push the locking ring 16 to move, causing the locking ring 16 to press against the two elastic clamping blocks 9, causing the two elastic clamping blocks 9 to contract and clamp and fix the first cutter bar 2. In this way, when it is necessary to extend or retract the cutter head 1, only one hand needs to pull the connecting sleeve 10 to drive the locking ring 16 away from the side of the elastic clamping blocks 9. The two elastic clamping blocks 9 will open, the first cutter bar 2 will loosen, and the operator can pull the first cutter bar 2 to adjust the cutter head 1. After adjustment, only the connecting sleeve 10 needs to be released, and the elasticity of spring 15 can push the locking ring 16 back to its original position, completing the fixation of the first cutter bar 2.
[0020] It should be noted that, as Figure 5 As shown, the inner wall of the locking ring 16 is inclined at one end near the elastic clamping block 9. The inclined surface can guide the locking ring 16 to prevent it from getting stuck on the side of the elastic clamping block 9 when it moves, so as not to affect the fixation of the first tool bar 2.
[0021] like Figure 3 and Figure 5 As shown, a conductive end 18 is coaxially mounted at one end inside the receiving groove 17, and a conductive connection groove 8 is provided at one end of the first cutter bar 2. When one end of the first cutter bar 2 extends into the receiving groove 17, one end of the conductive end 18 extends into the conductive connection groove 8. The inner wall of the conductive connection groove 8 is electrically connected to the cutter head 1. In actual use, the current can be transmitted to the cutter head 1 through the connection between the conductive end 18 and the conductive connection groove 8, so that the cutter head 1 can work normally.
[0022] like Figure 1 and Figure 3 As shown, an electrical connecting piece 4 is installed at one end inside the conductive connecting groove 8. Several elastic conductive pieces 3 are connected to the side of the electrical connecting piece 4. Each elastic conductive piece 3 is arc-shaped, and a conductive groove is formed between the elastic conductive pieces 3. One end of the conductive end 18 extends into the conductive groove and contacts the inner surface of the elastic conductive piece 3. In actual use, the elasticity of the elastic conductive piece 3 can make it tightly contact the surface of the conductive end 18. In this way, when adjusting the position of the first cutter bar 2, the conductive end 18 will not affect the stability of current transmission due to insufficient contact with the elastic conductive piece 3, thus improving the performance.
[0023] like Figure 7 As shown, a conductive silicone pad 19 is installed on the inner wall of the conductive connection groove 8. The inner surface of the conductive silicone pad 19 is connected to the outer surface of the elastic conductive sheet 3. In actual use, the conductive silicone pad 19 can make the elastic conductive sheet 3 fully electrically connected to the inner wall of the conductive connection groove 8, thus maintaining the stability of the current transmission of the electrical connection sheet 4.
[0024] like Figure 3 As shown, one end of each elastic conductive sheet 3 is connected to an arc-shaped connecting sheet 5 via an elastic connecting sheet 6. The arc-shaped connecting sheet 5 extends to the outside of the conductive connecting groove 8, and a connecting ring 7 is installed at the end of the first cutter bar 2 away from the cutter head 1. An annular groove 13 is opened inside the connecting ring 7. An arc-shaped limiting block 14 is installed on the side of each arc-shaped connecting sheet 5. One side of each arc-shaped limiting block 14 extends into the annular groove 13. In actual use, the elastic force of the elastic connecting sheet 6 can push the arc-shaped connecting sheet 5 to move, so that the arc-shaped limiting block 14 on the arc-shaped connecting sheet 5 extends into the annular groove 13, thereby fixing the elastic conductive sheet 3 in the conductive connecting groove 8, which is convenient for fixing.
[0025] Specifically, when adjusting the cutter head 1, the operator pulls the connecting sleeve 10, which moves the locking ring 16, compresses the spring 15, and disengages the inner surface of the locking ring 16 from the elastic clamping block 9. The two elastic clamping blocks 9 open, releasing the first cutter bar 2. Then, the operator pulls the first cutter bar 2 again, and one end of the first cutter bar 2 moves out of the receiving groove 17. After moving out a preset length, the operator releases the connecting sleeve 10, the spring 15 extends, and pushes the locking ring 16 to move, so that the inner surface of the locking ring 16 moves into the elastic clamping block 9. The side of the holding block 9 is pressed against the elastic clamping block 9, causing the two elastic clamping blocks 9 to close and clamp and fix the first cutter bar 2. When the position of the first cutter bar 2 is moved, the elastic conductive sheet 3 will contract under its own elastic force and the elastic force of the conductive silicone pad 19, so that the inner surface of the elastic conductive sheet 3 is in full contact with the surface of the conductive end 18. During the process of the conductive end 18 moving relative to the elastic conductive sheet 3, the electrical connection between the two remains stable, so that the current transmitted from the conductive end 18 to the cutter head 1 remains stable, improving the use effect.
[0026] Furthermore, such as Figure 4 As shown, a limiting ring 20 is installed at one end of the outer surface of each elastic clamping block 9, and one end of the locking ring 16 abuts against the side of the limiting ring 20. The locking ring 16 can be limited by the limiting ring 20 to prevent the locking ring 16 from falling off.
[0027] Furthermore, both the first cutter bar 2 and the second cutter bar 11 have an insulating protective layer on their outer surfaces. The insulating protective layer can be made of insulating rubber or other electrically insulating materials. In this way, during use, the insulating protective layer can insulate the outer surfaces of the first cutter bar 2 and the second cutter bar 11 from external objects and prevent current leakage.
[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A retractable electrosurgical head, comprising a first cutter bar (2) and a second cutter bar (11), characterized in that: One end of the first tool bar (2) is connected to the tool head (1), and one end of the second tool bar (11) is fixed to the electric knife handle by the mounting ring (12). A receiving groove (17) is opened at one end of the second tool bar (11), and one end of the first tool bar (2) extends into the receiving groove (17). Two elastic clamping blocks (9) are symmetrically installed at one end of the second tool holder (11). Each elastic clamping block (9) is arc-shaped, and one end of the two elastic clamping blocks (9) is symmetrically opened outward. When the two elastic clamping blocks (9) are in contact at their close ends, a cylindrical cavity is formed between them. The inner wall of the cylindrical cavity abuts against the outer surface of the first tool holder (2). A locking ring (16) is slidably connected to one end of the second tool bar (11). One end of the inner side of each locking ring (16) abuts against the outer surface of the elastic clamping block (9). A connecting sleeve (10) is installed on one end edge of the locking ring (16). The connecting sleeve (10) is fitted on the side of the second tool bar (11). A receiving space is formed between the inner wall of the connecting sleeve (10) and the outer surface of the second tool bar (11). A spring (15) is fitted on the side of the second tool bar (11). The spring (15) is located in the receiving space. One end of the spring (15) abuts against one end of the locking ring (16). The other end of the spring (15) abuts against the end of the mounting ring (12). A conductive end (18) is coaxially installed at one end inside the receiving groove (17), and a conductive connection groove (8) is opened at one end of the first tool bar (2). When one end of the first tool bar (2) extends into the receiving groove (17), one end of the conductive end (18) extends into the conductive connection groove (8). An electrical connecting piece (4) is installed at one end inside the conductive connecting groove (8). Several elastic conductive pieces (3) are connected to the side of the electrical connecting piece (4). Each elastic conductive piece (3) is arc-shaped, and a conductive groove is formed between several elastic conductive pieces (3). One end of the conductive end (18) extends into the conductive groove and contacts the inner surface of the elastic conductive piece (3).
2. The retractable electrosurgical head according to claim 1, characterized in that: The inner wall of the conductive connection groove (8) is electrically connected to the cutter head (1).
3. The retractable electrosurgical tip according to claim 1, characterized in that: The inner wall of the locking ring (16) is set as an inclined surface at one end near the elastic clamping block (9).
4. A retractable electrosurgical tip according to claim 3, characterized in that: Each elastic clamping block (9) has a limit ring (20) installed at one end of its outer surface, and one end of the locking ring (16) abuts against the side of the limit ring (20).
5. A retractable electrosurgical tip according to claim 1, characterized in that: A conductive silicone pad (19) is installed on the inner wall of the conductive connection groove (8), and the inner surface of the conductive silicone pad (19) is connected to the outer surface of the elastic conductive sheet (3).
6. A retractable electrosurgical tip according to claim 1, characterized in that: One end of each elastic conductive sheet (3) is connected to an arc-shaped connecting sheet (5) via an elastic connecting sheet (6). The arc-shaped connecting sheet (5) extends to the outside of the conductive connecting groove (8). A connecting ring (7) is installed at the end of the first cutter bar (2) away from the cutter head (1). An annular groove (13) is opened inside the connecting ring (7). An arc-shaped limiting block (14) is installed on the side of each arc-shaped connecting sheet (5). One side of each arc-shaped limiting block (14) extends into the annular groove (13).
7. A retractable electrosurgical tip according to claim 1, characterized in that: Both the first tool holder (2) and the second tool holder (11) have an insulating protective layer on their outer surfaces.