Electrode knife
By introducing an insulated support frame and insulated channels into the electrode knife, dynamic adjustment of the cutting depth of the electric cut is achieved, which solves the problems of low surgical efficiency and low stability of the existing electrode knife, and improves surgical efficiency and stability.
Patent Information
- Application Number
- CN202420662257.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-02
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-04-02
AI Technical Summary
The existing electrode knives are inefficient and have low stability during surgery, and the cutting depth of the electric cutting wire cannot be adjusted, resulting in low surgical efficiency and low stability.
An electrode knife including electric cutting wire, conductive rod, shell and insulated support frame is designed. The insulated support frame is slidably connected to the shell, and the insulated channel runs through the insulated support frame. The distal end of the electric cutting wire can be slidably adjusted through the insulated channel. , realize dynamic adjustment of cutting depth.
Through the sliding insulated support frame, the cutting depth of the electric cutting can be dynamically adjusted, thereby improving surgical efficiency and enhancing the stability of the surgery.
Smart Images
Figure CN222444299U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of surgical knives, in particular to an electrode knife. Background Art
[0002] Electrode knife is a kind of high-frequency electric knife, which is used for cutting tissue and electrocoagulation hemostasis, and has been widely used in clinical practice. It has the dual functions of cutting and coagulation. At present, it is not only used in direct vision surgery, but also in laparoscopic and other endoscopic surgeries. The high-frequency generator outputs high-frequency current, which forms high temperature at the contact point between the electrode and the tissue, thereby achieving the purpose of cutting tissue and electrocoagulation hemostasis.
[0003] The electrode knife in the prior art mostly includes a conductive rod, an electric cutting wire and a shell, wherein the shell is coated on the conductive rod, and the electric cutting wire is arranged on the conductive rod and extends out of the distal end of the shell. However, once such an electrode knife is formed, the operator cannot adjust the cutting depth of the electric cutting wire during surgery. If the cutting depth needs to be adjusted, the electrode knife of a new size needs to be replaced, resulting in low efficiency and low stability of the surgery.
[0004] Therefore, it is necessary to improve the existing electrode knife to improve the surgical efficiency and stability. Utility Model Content
[0005] The utility model aims to provide an electrode knife to solve the problems of low efficiency and low stability of the existing electrode knife surgery.
[0006] In order to solve the above technical problems, the utility model provides an electrode knife, including an electric cutting wire, a conductive rod, a shell, and an insulating support frame, wherein the shell is covered on the conductive rod, the electric cutting wire includes a first part located in the shell and connected to the conductive rod, and a second part extending out of the distal end of the shell and connected to the first part, and the conductive rod, the first part and the second part form an electrical circuit, the insulating support frame is slidably connected to the shell and is located at the distal end of the shell, an insulating channel is provided on the insulating support frame for the second part to pass through and can slide relative to the second part, and the angle between the penetration direction of the insulating channel and the sliding direction of the insulating support frame from the proximal end to the distal end is less than 90°.
[0007] Optionally, the insulating support frame includes a slider and a limiting rod, the slider is slidably connected to the shell, the limiting rod is arranged at the distal end of the slider and the distal end of the limiting rod is located at the distal end of the shell, and the insulating channel is arranged on the limiting rod.
[0008] Optionally, the slider is arranged outside the shell.
[0009] Optionally, the proximal end of the slider has two clamping parts, and the two clamping parts form a C-shaped clamping ring, and the slider is slidably connected to the shell through the C-shaped clamping ring.
[0010] Optionally, the limiting rod is arranged perpendicular to the sliding direction of the sliding block.
[0011] Optionally, the number of the insulating channels is two, the second part first passes through one of the insulating channels from the proximal end to the distal end, and then passes through the other insulating channel from the distal end to the proximal end, and the second parts are connected to form a ring.
[0012] Optionally, the second portion is elliptical.
[0013] Optionally, the shell has two guide channels for guiding the electric cutting wire, and the electric cutting wire extends out of the shell after passing through the guide channels, and the included angle between the two guide channels is less than 180°.
[0014] Optionally, the second part is rectangular.
[0015] Optionally, the housing has two guide channels for guiding the electric cutting wire, the electric cutting wire passes through the guide channels and extends out of the housing, and an included angle between the two guide channels is 180°.
[0016] The utility model provides an electrode knife, which has the following beneficial effects:
[0017] Since the shell is wrapped around the conductive rod, the electric cutting wire includes a first part located in the shell and connected to the conductive rod, and a second part extending out of the distal end of the shell and connected to the first part, and the conductive rod, the first part and the second part form an electrical circuit, the insulating support frame is slidably connected to the shell and is arranged at the distal end of the shell, and an insulating channel is arranged on the insulating support frame for the second part to pass through and can slide relative to the second part, and the angle between the penetration direction of the insulating channel and the sliding direction of the insulating support frame from the proximal end to the distal end is less than 90°, therefore, when When the insulating support frame slides relative to the shell, the distance between the distal end of the electric cutting wire and the distal end of the insulating channel changes with the sliding of the insulating support frame. For example, when the insulating support frame slides from the proximal end to the distal end, the distance between the distal end of the electric cutting wire and the distal end of the insulating channel becomes smaller, and the cutting depth becomes smaller; when the insulating support frame slides from the distal end to the proximal end, the distance between the distal end of the electric cutting wire and the distal end of the insulating channel becomes larger, and the cutting depth becomes larger. In this way, the cutting depth can be adjusted by pushing the insulating support frame to slide relative to the shell, which can improve the surgical efficiency and has high stability. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a structural schematic diagram of an electrode knife in the first embodiment of the utility model;
[0019] Figure 2 It is a schematic structural diagram of the conductive rod and the electric cutting wire in the electrode knife in the first embodiment of the utility model;
[0020] Figure 3 This is another structural schematic diagram of the electrode knife in the first embodiment of the utility model;
[0021] Figure 4 This is a schematic diagram of the insulating channel structure of the electrode knife in the first embodiment of the utility model;
[0022] Figure 5 This is a structural schematic diagram of an electrode knife in the second embodiment of the utility model;
[0023] Figure 6 It is a schematic diagram of the structure of the conductive rod and the electric cutting wire in the electrode knife in the second embodiment of the utility model;
[0024] Figure 7 This is another structural schematic diagram of the electrode knife in the second embodiment of the utility model.
[0025] Description of reference numerals:
[0026] 100-electric cutting wire; 200-conductive rod; 300-housing; 310-anti-slip part; 320-guiding channel; 400-insulating support frame; 410-insulating channel; 420-sliding block; 421-clamping part; 430-limiting rod. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0030] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0031] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0032] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0033] In the present invention, "proximal end" and "distal end" refer to the relative orientation, relative position, and direction of components or actions relative to each other from the perspective of a doctor using the medical device. Although "proximal end" and "distal end" are not restrictive, the "proximal end" generally refers to the end of the medical device that is close to the doctor during normal operation, and the "distal end" generally refers to the end that first enters the patient's body.
[0034] Embodiment 1
[0035] refer to Figure 1 , Figure 2 and Figure 3 , Figure 1 This is a schematic diagram of the structure of the electrode knife in the first embodiment of the utility model. Figure 2 This is a schematic diagram of the structure of the conductive rod and the electric cutting wire in the electrode knife in the first embodiment of the utility model. Figure 3 This is another structural schematic diagram of the electrode knife in the first embodiment of the utility model. Figure 4It is a schematic diagram of the insulating channel structure of the electrode knife in Example 1 of the utility model. This embodiment provides an electrode knife, including an electric cutting wire 100, a conductive rod 200, a shell 300 and an insulating support frame 400, the shell 300 is covered on the conductive rod 200, the electric cutting wire 100 includes a first part located in the shell 300 and connected to the conductive rod 200, and a second part extending out of the distal end of the shell 300 and connected to the first part, and the conductive rod 200, the first part and the second part form an electrical circuit, the insulating support frame 400 is slidably connected to the shell 300 and is arranged at the distal end of the shell 300, and an insulating channel 410 for the second part to pass through and can slide relative to the second part is arranged on the insulating support frame 400, and the angle between the penetration direction of the insulating channel 410 and the sliding direction of the insulating support frame 400 from the proximal end to the distal end is less than 90°.
[0036] Since the housing 300 is covered on the conductive rod 200, the electric cutting wire 100 includes a first part located in the housing 300 and connected to the conductive rod 200, and a second part extending from the distal end of the housing 300 and connected to the first part, and the conductive rod 200, the first part and the second part form an electrical loop, and the insulating support frame 400 is slidably connected to the housing 300 and is located at the distal end of the housing 300. An insulating support frame 400 is provided on the insulating support frame 400 for the second part to pass through and can slide relative to the second part. The insulating channel 410 is provided with an angle less than 90° between the penetration direction of the insulating channel 410 and the direction in which the insulating support frame 400 slides from the proximal end to the distal end. Therefore, when the insulating support frame 400 slides relative to the housing 300, the distance between the distal end of the electric cutting wire 100 and the distal end of the insulating channel 410 changes with the sliding of the insulating support frame 400. For example, when the insulating support frame 400 slides from the proximal end to the distal end, the distance between the distal end of the electric cutting wire 100 and the distal end of the insulating channel 410 becomes smaller, and the cutting depth becomes smaller (reference Figure 3 ); When the insulating support frame 400 slides from the distal end to the proximal end, the distance between the distal end of the electric cutting wire 100 and the distal end of the insulating channel 410 becomes larger, and the cutting depth becomes larger (reference Figure 1 ), in this way, the cutting depth can be adjusted by pushing the insulating support frame 400 to slide relative to the shell 300, which can improve the surgical efficiency and has high stability.
[0037] refer to Figure 1The insulating support frame 400 includes a slider 420 and a limiting rod 430. The slider 420 is slidably connected to the housing 300. The limiting rod 430 is arranged at the distal end of the slider 420 and the distal end of the limiting rod 430 is located at the distal end of the housing 300. The insulating channel 410 is arranged on the limiting rod 430.
[0038] Preferably, the slider 420 is disposed outside the housing 300 .
[0039] Preferably, the proximal end of the slider 420 has two clamping parts 421 , and the two clamping parts 421 form a C-shaped clamping ring, and the slider 420 is slidably connected to the housing 300 via the C-shaped clamping ring.
[0040] Preferably, the limiting rod 430 is arranged perpendicular to the sliding direction of the slider 420, so that the insulating support frame 400 can be arranged in a T-shape.
[0041] Preferably, the number of the insulating channels 410 is two, the second portion first passes through one of the insulating channels 410 from the proximal end to the distal end, and then passes through the other insulating channel 410 from the distal end to the proximal end, and the second portions are connected to form a ring.
[0042] In this embodiment, the second portion is elliptical.
[0043] The housing 300 is provided with an anti-slip portion 310 .
[0044] Specifically, the anti-slip portion 310 is a ring-shaped protrusion disposed on the housing 300 , and the number of the ring-shaped protrusions is at least three.
[0045] The proximal end of the housing 300 is hexagonal, so as to prevent the electrode knife from rotating when the electrode knife is held.
[0046] The shell 300 is made of ABS.
[0047] The housing 300 has two guide channels 320 for guiding the electric cutting wire 100 . The electric cutting wire 100 passes through the guide channels 320 and then extends out of the housing 300 . The included angle between the two guide channels 320 is less than 180°.
[0048] The electric cutting wire 100 is a tungsten wire.
[0049] The conductive rod 200 is a stainless steel rod.
[0050] In this embodiment, when the electrode knife is in use, the insulating support frame 400 is first slid relative to the outer shell 300 to adjust the depth of the electric cutting wire 100 extending out of the insulating channel 410, and then the conductive rod 200 is powered on to power the electric cutting wire 100, and then the surgery is performed using the electric cutting wire 100.
[0051] Embodiment 2
[0052] This embodiment provides an electrode knife, which is different from the electrode knife of the first embodiment in that the shape of the portion of the electric cutting wire 100 extending out of the distal end of the housing 300 is different, and the angles between the guide channels 320 are different.
[0053] refer to Figure 5 , Figure 6 and Figure 7 , Figure 5 This is a structural schematic diagram of an electrode knife in the second embodiment of the utility model. Figure 6 This is a schematic diagram of the structure of the conductive rod and the electric cutting wire in the electrode knife in the second embodiment of the utility model. Figure 7 This is another structural schematic diagram of the electrode knife in the second embodiment of the utility model. The second part is rectangular, so that the insulating support frame 400 can slide and adjust the distance between the far end of the electric cutting wire 100 and the far end of the insulating channel 410.
[0054] The included angle between the two guide channels 320 is 180°.
[0055] The above description is only a description of the preferred embodiment of the utility model, and is not any limitation on the scope of the utility model. Any changes and modifications made by ordinary technicians in the field of the utility model based on the above disclosure shall fall within the scope of protection of the claims.
Claims
1. An electrode knife, comprising an electric cutting wire, a conductive rod, and a shell, characterized in that: It also includes an insulating support frame, the shell is covered on the conductive rod, the electric cutting wire includes a first part located in the shell and connected to the conductive rod, and a second part extending out of the distal end of the shell and connected to the first part, and the conductive rod, the first part and the second part form an electrical circuit, the insulating support frame is slidably connected to the shell and is located at the distal end of the shell, an insulating channel is provided on the insulating support frame for the second part to pass through and can slide relative to the second part, and the angle between the penetration direction of the insulating channel and the sliding direction of the insulating support frame from the proximal end to the distal end is less than 90°.
2. The electrode knife according to claim 1, characterized in that: The insulating support frame includes a slider and a limiting rod, the slider is slidably connected to the shell, the limiting rod is arranged at the distal end of the slider and the distal end of the limiting rod is located at the distal end of the shell, and the insulating channel is arranged on the limiting rod.
3. The electrode knife according to claim 2, characterized in that: The slider is arranged outside the housing.
4. The electrode knife according to claim 3, characterized in that: The proximal end of the slider has two clamping parts, and the two clamping parts form a C-shaped clamping ring. The slider is slidably connected to the shell through the C-shaped clamping ring.
5. The electrode knife according to claim 2, characterized in that: The limiting rod is arranged perpendicular to the sliding direction of the sliding block.
6. The electrode knife according to claim 1, characterized in that: There are two insulating channels, and the second part first passes through one of the insulating channels from the proximal end to the distal end, and then passes through the other insulating channel from the distal end to the proximal end, and the second parts are connected to form a ring.
7. The electrode knife according to claim 6, characterized in that: The second portion is oval-shaped.
8. The electrode knife according to claim 7, characterized in that: The shell has two guide channels for guiding the electric cutting wire. The electric cutting wire passes through the guide channels and then extends out of the shell. The included angle between the two guide channels is less than 180°.
9. The electrode knife according to claim 6, characterized in that: The second portion is rectangular.
10. The electrode knife according to claim 9, characterized in that: The housing has two guide channels for guiding the electric cutting wire. The electric cutting wire passes through the guide channels and extends out of the housing. The included angle between the two guide channels is 180°.