Plasma radiofrequency surgical electrode

Abstract

The utility model discloses a kind of plasma radio frequency surgical electrode, belong to medical instrument technical field, the plasma radio frequency surgical electrode includes handle, is internally equipped with infusion tube and negative pressure suction pipe;Double interface sleeve, it is set in handle, and one end of double interface sleeve is communicated with infusion tube and negative pressure suction pipe and is set;Cutter bar, one end is installed on handle, and it is communicated with another end of double interface sleeve and is set;Tool bit, it is installed in the end of cutter bar away from handle, and it is communicated with cutter bar and is set.Therefore, by the setting of double interface sleeve, multiple cables in handle are separated and fixed individually, so that multiple cables in handle are installed in order, to reduce signal crosstalk, reduce electromagnetic interference, and then improve electrical performance and signal stability.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a plasma radiofrequency surgical electrode. Background Technology

[0002] With the development of modern medical technology, low-temperature plasma ablation has begun to be used clinically. It is effective for soft tissue surgery, retaining the characteristics of traditional surgical procedures while improving surgical outcomes. Plasma radiofrequency refers to the 100Hz range of radiofrequency. Low-temperature plasma systems utilize the energy generated by the high frequency of plasma to excite the electrolyte between the plasma electrode and the tissue into a plasma state. Charged particles in the plasma break the molecular bonds between cells, causing the target tissue cells to break their molecular bonds at low temperatures (40-70℃), resulting in molecular lysis, evaporation of cell water, protein denaturation and necrosis, and gradual decomposition into carbohydrates, etc., thereby causing blood vessels around the tissue to constrict and coagulate. Therefore, plasma ablation can achieve good cutting and hemostasis effects with low surgical trauma. Because this effect of charged particles in the plasma is limited to the surface of the target tissue and is achieved at a relatively low temperature, thermal damage to surrounding tissues is minimized. Plasma radiofrequency technology maximizes the protection of surrounding tissues during targeted therapy, and has advantages such as accuracy, minimal invasiveness, and few adverse reactions. It is now widely used in clinical practice, such as in urology for prostatectomy, and in otolaryngology for tonsillectomy, adenoidectomy, turbinate hypertrophy, palatopharyngoplasty, benign nasal tumors, vocal cord polyps, early glottic laryngeal cancer, pharyngeal neoplasms and tumors.

[0003] Low-temperature plasma ablation uses a plasma tip that integrates cutting, hemostasis, water inlet, and suction functions, significantly reducing the time spent on frequent instrument changes. However, the stability and safety of such plasma tips during operation are often primary concerns. For stability, the electrode wire must continuously excite plasma during discharge, achieving different energy outputs depending on the setting, used for cutting and coagulation, or simultaneous cutting and coagulation. For safety, electrical breakdown or short circuits between the positive and negative electrodes must not occur during plasma excitation. Therefore, based on these main issues, this application proposes a plasma radiofrequency surgical electrode. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned shortcomings in the prior art by providing a plasma radiofrequency surgical electrode to solve the technical problem of insufficient stability in existing plasma radiofrequency surgical electrodes.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A plasma radiofrequency surgical electrode, comprising: The handle contains a drip tube and a negative pressure suction tube. A dual-port sleeve is disposed inside the handle, and one end of the dual-port sleeve is connected to the drip tube and the negative pressure suction tube. One end of the tool holder is mounted on the handle and connected to the other end of the dual-interface sleeve; The cutting head is installed at the end of the cutting rod away from the handle and is connected to the cutting rod.

[0006] Furthermore, the dual-interface sleeve includes: The connecting block has a first tap hole and a second tap hole at one end; The first tube body is installed at one end of the connecting block and is connected to the first tap hole; The second tube has one end installed on the other end of the connecting block and connected to the second tap hole. The other end of the second tube is connected to the outer wall of the first tube and connected to the first tube. One end of the drip tube is inserted into the second tap hole and connected to the second tube.

[0007] Furthermore, the end of the first tube that is away from the connecting block extends out of the handle.

[0008] Furthermore, the tool holder includes: The inner tube has one end passing through the first tap hole and communicating with the negative pressure suction tube, and the other end extending out of the handle; A return electrode tube is sleeved outside the inner tube, with one end of the return electrode tube extending into the first tube body and inserted into the first tap hole, and the other end extending out of the handle; An outer tube is sleeved outside the return electrode tube, and one end of the outer tube is connected to the first tube body and communicates with the second tube body. A gap is provided between the outer tube and the return electrode tube.

[0009] Furthermore, it also includes a metal tube disposed at the end of the return electrode tube away from the connecting block and extending out of the outer tube.

[0010] Furthermore, it also includes a first boss, in which multiple first bosses are evenly installed on the inner sidewall of the outer tube along the circumferential direction of the outer tube and located at one end of the outer tube near the metal tube.

[0011] Furthermore, the cutter head includes: A ceramic seat is installed at the end of the return electrode tube away from the handle. One end of the ceramic seat has a suction hole, and the suction hole is connected to the inner tube. An electrode wire is fixedly mounted on the ceramic base, with one end of the electrode wire extending out of the ceramic base and the other end electrically connected to a power source.

[0012] Furthermore, the outer wall of the ceramic seat is provided with a second protrusion, and the outer wall of the second protrusion abuts against the end of the return electrode tube away from the connecting block.

[0013] Furthermore, the electrode wire is provided with an insulating layer.

[0014] Furthermore, the insulating layer is a structural layer made of double-layer PI tubes.

[0015] The plasma radiofrequency surgical electrode provided by this invention has the following beneficial effects: 1. By using a dual-interface sleeve, multiple cables inside the handle are separated and fixed individually, allowing for orderly installation of these cables, thereby reducing signal crosstalk, lowering electromagnetic interference, and ultimately improving electrical performance and signal stability. 2. The use of a double-layer PI tube reduces the probability of electrical breakdown and enhances safety. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the plasma radiofrequency surgical electrode provided in an embodiment of the present invention; Figure 2 A schematic diagram of the installation structure of the handle and the dual-interface sleeve provided in an embodiment of this utility model; Figure 3 A schematic diagram of the mounting structure of the tool holder and the tool head provided in an embodiment of this utility model; Figure 4 A cross-sectional view of the tool holder and the tool head provided in an embodiment of this utility model; Figure 5 This is a schematic diagram of the structure of the dual-interface sleeve provided in an embodiment of the present utility model.

[0017] The attached diagram shows the markings and corresponding component names: 1-Handle, 2-Double-interface sleeve, 21-Connecting block, 211-First tap hole, 212-Second tap hole, 22-First tube body, 23-Second tube body, 3-Knife rod, 31-Inner tube, 32-Return electrode tube, 33-Outer tube, 4-Knife head, 41-Ceramic seat, 411-Suction hole, 42-Electrode wire, 5-Metal tube, 6-First boss, 7-Second boss, 8-Drip tube, 9-Negative pressure suction tube. Detailed Implementation

[0018] The specific embodiments of this utility model are described below to enable those skilled in the art to understand this utility model. However, it should be understood that this utility model is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of this utility model as defined and determined by the appended claims, these changes are obvious. All utility model creations utilizing the concept of this utility model are within the scope of protection.

[0019] This embodiment provides a plasma radiofrequency surgical electrode that solves the technical problem of insufficient stability in existing plasma radiofrequency surgical electrodes. The plasma radiofrequency surgical electrode includes a handle 1, a dual-interface lifting mechanism, a scalpel 3, and a scalpel head 4, wherein: The handle 1 has an installation cavity, and the injection tube and the negative pressure suction tube 9 are arranged in the installation cavity.

[0020] The dual-interface sleeve 2 is installed inside the handle 1, and one end of the dual-interface sleeve 2 is connected to the drip tube 8 and the negative pressure suction tube 9. In this way, the multiple cables inside the handle 1 are fixed separately, so that the multiple cables inside the handle 1 are installed in an orderly manner, thereby reducing signal crosstalk, reducing electromagnetic interference, and thus improving electrical performance and signal stability.

[0021] One end of the tool holder 3 is mounted on the handle 1 and connected to the other end of the double-port sleeve 2. Specifically, the tool holder 3 and the handle 1 are sealed to prevent liquid from leaking out of the tool holder 3.

[0022] The cutter head 4 is installed at the end of the cutter bar 3 away from the handle 1 and is connected to the cutter bar 3.

[0023] The dual-port sleeve 2 includes a connecting sleeve, a first tube body 22, and a second tube body 23, wherein: One end of the connecting block 21 is provided with a first tap hole 211 and a second tap hole 212, and the outer diameter of the connecting block 21 is the same as the inner diameter of the handle 1. The axis of the first tap hole 211 and the axis of the second tap hole 212 are intersecting.

[0024] One end of the first tube 22 is installed at the other end of the connecting block 21 and is connected to the first tap hole 211, and the other end of the first tube 22 extends toward the end close to the cutter head 4.

[0025] One end of the second tube 23 is installed at the other end of the connecting block 21 and is connected to the second tap hole 212. The first tube 22 and the second tube 23 are both located on the same side of the connecting block 21. The other end of the second tube 23 is connected to the outer wall of the first tube 22 and is connected to the first tube 22. One end of the drip tube 8 is inserted into the second tap hole 212 and is connected to the second tube 23.

[0026] Optionally, the first tube 22 and the second tube 23 can be connected to the connecting block 21 by through-hole welding, bonding, or hot-melt. Of course, they can also be integrally formed.

[0027] Optionally, the end of the first tube 22 away from the connecting block 21 extends out of the handle 1. In this way, the first tube 22 acts as a stress buffer between the tool bar 3 and the handle 1 to maintain the stability of the contact point between the tool bar 3 and the handle 1.

[0028] The tool holder 3 includes an inner tube 31, a return electrode tube 32, and an outer tube 33, wherein: One end of the inner tube 31 passes through the first tap hole 211 and is connected to the negative pressure suction tube 9, while the other end extends out of the handle 1. That is, the inner tube 31 is a negative pressure suction channel. Optionally, the inner tube 31 is provided with a fixing layer, which is a structural layer made of insulating material. In this way, the electrode wire 42 in the knife bar 3 is constrained together with the negative pressure suction channel tube by the fixing layer, and insulation protection is provided.

[0029] The return electrode tube 32 is sleeved outside the inner tube 31, with one end of the return electrode tube 32 extending into the first tube body 22 and inserted into the first tap hole 211, and the other end extending out of the handle 1.

[0030] The outer tube 33 is sleeved outside the return electrode tube 32, and one end of the outer tube 33 is connected to the first tube body 22 and communicates with the second tube body 23. There is a gap between the outer tube 33 and the return electrode tube 32, that is, there is a flow channel between the inner side wall of the outer tube 33 and the outer side wall of the return electrode tube 32, and the flow channel is communicated with the drip tube 8. The drip liquid enters from the drip tube 8, flows into the flow channel, and finally flows out from the other end of the outer tube 33.

[0031] Optionally, a metal tube 5 is also included, which is located at the end of the return point pipe away from the connecting block 21 and extends out of the outer tube 33, so that the exposed metal tube 5 is provided to form a good circuit with the cutter head 4.

[0032] Optionally, it also includes a first protrusion 6, and there are multiple first protrusions 6 installed on the inner side wall of the outer tube 33 along the circumferential direction of the outer tube 33 and located at the end of the outer tube 33 near the gold tube. In this way, by setting multiple first protrusions 6, not only is the return electrode tube 32 centrally located in the outer tube 33, but the other end of the outer tube 33, that is, the outlet of the dripping liquid, is also evenly divided into multiple liquid outlets.

[0033] Optionally, the number of first protrusions 6 is four, and the four first protrusions 6 are located at the four vertices of the same rectangle.

[0034] The cutter head 4 includes a ceramic seat 41 and an electrode wire 42, wherein: The ceramic seat 41 is installed at the end of the return electrode tube 32 away from the handle 1. One end of the ceramic seat 41 is provided with a suction hole 411, which is connected to the inner tube 31. In this way, the setting of the ceramic seat 41 strictly insulates the electrode wire 42 from the metal tube 5, preventing the current from short-circuiting to non-target tissue and ensuring that energy is released only from the tip of the electrode wire 42. The setting of the suction hole 411 makes it easy to pump the cut tissue along with the drip liquid from the suction hole 411, through the negative pressure suction channel, and finally into the negative pressure suction tube 9, thereby completing the discharge of tissue debris.

[0035] The electrode wire 42 is a U-shaped electrode wire 42, which is fixedly installed on the ceramic base 41. One end of the electrode wire 42 extends out of the ceramic base 41, and the other end is electrically connected to the power supply. That is, the open end of the electrode wire 42 is connected to the power supply through a cable, and the arc-shaped end of the electrode wire 42 passes through the ceramic base 41 and extends out of the ceramic base 41.

[0036] Optionally, the outer wall of the ceramic seat 41 is provided with a second protrusion 7, and the outer wall of the second protrusion 7 abuts against the end of the return electrode tube 32 away from the connecting block 21. In this way, the ceramic seat 41 is restricted to the return electrode tube 32 by the setting of the first protrusion 6.

[0037] Optionally, the electrode wire 42 is provided with an insulating layer. The electrode wire 42 extending out of the ceramic base 41 is defined as the first segment, and the remaining electrode wire 42 excluding the first segment is defined as the second segment. The insulating layer is provided outside the second segment. In this way, by providing the insulating layer, the radio frequency current can only be released from the tip of the electrode wire 42 that is not covered by the insulating layer.

[0038] Optionally, the insulation layer is a structural layer made of double-layer PI tubes. In this way, the probability of electrical breakdown is reduced and the product performance is improved by setting up double-layer PI tubes.

[0039] Although the specific embodiments of the utility model have been described in detail with reference to the accompanying drawings, this should not be construed as limiting the scope of protection of this patent. Various modifications and variations that can be made by those skilled in the art without inventive effort within the scope described in the claims still fall within the scope of protection of this patent.

Claims

1. A plasma radiofrequency surgical electrode, characterized in that, include: The handle (1) is equipped with a drip tube (8) and a negative pressure suction tube (9); A double-port sleeve (2) is disposed inside the handle (1), and one end of the double-port sleeve (2) is connected to the drip tube (8) and the negative pressure suction tube (9); The tool holder (3) is mounted on the handle (1) at one end and connected to the other end of the double-interface sleeve (2); The cutting head (4) is installed at the end of the cutting bar (3) away from the handle (1) and is connected to the cutting bar (3).

2. The plasma radiofrequency surgical electrode according to claim 1, characterized in that, The dual-interface sleeve (2) includes: The connecting block (21) has a first tap hole (211) and a second tap hole (212) at one end; The first tube (22) is installed at one end on the other end of the connecting block (21) and is connected to the first tap hole (211); The second tube (23) is installed at one end of the connecting block (21) and communicates with the second tap hole (212). The other end of the second tube (23) is connected to the outer wall of the first tube (22) and communicates with the first tube (22). One end of the drip tube (8) is inserted into the second tap hole (212) and communicates with the second tube (23).

3. The plasma radiofrequency surgical electrode according to claim 2, characterized in that, The end of the first tube (22) away from the connecting block (21) extends out of the handle (1).

4. The plasma radiofrequency surgical electrode according to claim 2, characterized in that, The tool holder (3) includes: The inner tube (31) has one end passing through the first tap hole (211) and connected to the negative pressure suction tube (9), and the other end extending out of the handle (1); The return electrode tube (32) is sleeved outside the inner tube (31), and one end of the return electrode tube (32) extends into the first tube body (22) and is inserted into the first tap hole (211), while the other end extends out of the handle (1). An outer tube (33) is sleeved outside the return electrode tube (32), and one end of the outer tube (33) is connected to the first tube body (22) and communicates with the second tube body (23). A gap is provided between the outer tube (33) and the return electrode tube (32).

5. The plasma radiofrequency surgical electrode according to claim 4, characterized in that, It also includes a metal tube (5), which is disposed at the end of the return electrode tube (32) away from the connecting block (21) and extends out of the outer tube (33).

6. The plasma radiofrequency surgical electrode according to claim 5, characterized in that, It also includes a first boss (6), and there are multiple first bosses (6). The multiple first bosses (6) are evenly installed on the inner side wall of the outer tube (33) along the circumferential direction of the outer tube (33) and are located at one end of the outer tube (33) near the metal tube (5).

7. The plasma radiofrequency surgical electrode according to claim 4, characterized in that, The cutting head (4) includes: A ceramic base (41) is installed at the end of the return electrode tube (32) away from the handle (1). A suction hole (411) is provided at one end of the ceramic base (41), and the suction hole (411) is connected to the inner tube (31). An electrode wire (42) is fixedly installed on the ceramic base (41). One end of the electrode wire (42) extends out of the ceramic base (41), and the other end is electrically connected to the power supply.

8. The plasma radiofrequency surgical electrode according to claim 7, characterized in that, The outer wall of the ceramic seat (41) is provided with a second protrusion (7), and the outer wall of the second protrusion (7) abuts against the end of the return electrode tube (32) away from the connecting block (21).

9. The plasma radiofrequency surgical electrode according to claim 7, characterized in that, The electrode wire (42) is provided with an insulating layer.

10. The plasma radiofrequency surgical electrode according to claim 9, characterized in that, The insulating layer is a structural layer made of double-layer PI tubes.

Images