CN209107566U - Plasma surgical electrode structure - Google Patents

Abstract

The utility model provides a kind of Plasma surgical electrode structure, including handle, knife bar and electrode knife head, and the knife bar is connected between the electrode knife head and handle, and the knife bar is flexible link.Rigid knife bar relative to traditional electrode, the knife bar of the utility model uses deformable, curved flexible link, its shape can arbitrarily be changed, it is also easier to enter body cavities in this way, it reaches and needs the position performed the operation, and knife bar caliber can be accomplished smaller and softer, the visual field can be than more visible, operating process will not mechanicalness accidentally injure its hetero-organization, surgical procedure is more convenient.

Description

Plasma surgical electrode structure

technical field

The utility model belongs to the technical field of medical devices, in particular to a plasma surgical electrode structure.

Background technique

Low-temperature plasma ablation, because it can achieve functions such as cutting, ablation and hemostasis of tissue under low temperature (40-70°C) conditions, is increasingly used in clinical practice, especially in ENT departments, such as the larynx Tumor resection, tonsillectomy and adenoidectomy, ablation, hemostasis, etc., have a very wide range of applications. The existing clinical electrode cutter bars are all rigid tube bodies. This structure can provide better rigidity for the electrode cutter head, and the angle of the cutter bar can also be fine-tuned. However, there are also obvious defects. larger diameter (generally larger than ), and because it is rigid, it is more difficult to perform some more complex human cavity operations (such as laryngeal surgery, children's flat gland removal, etc.). The patient also causes certain injuries. At the same time, because it is difficult to reach the location of the lesion, it is also possible that some lesions have not been cleaned up, leaving hidden dangers and affecting the effect of the operation.

SUMMARY OF THE INVENTION

In view of the above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a plasma surgical electrode structure, which can better adapt to the narrow and complex human body cavity, and can reach the lesion position more accurately.

For realizing the above-mentioned purpose and other relevant purposes, the technical scheme of the present utility model is as follows:

A plasma surgical electrode structure includes a handle, a knife rod and an electrode knife head, the knife rod is connected between the electrode knife head and the handle, and the knife rod is a flexible rod.

Compared with the rigid knife rod of the traditional electrode, the knife rod of the present invention adopts a deformable and bendable flexible rod, and its shape can be changed arbitrarily, so that it is easier to enter the human body cavity and reach the position requiring surgery, and the knife rod tube The diameter can be made smaller and softer, the field of vision will be clearer, the operation process will not mechanically injure other tissues, and the operation will be more convenient.

Further, a return channel for installing a return wire, an output channel for installing an output wire, and a perfusion channel for injecting an electrolyte solution are provided on the cutter bar, which are isolated from each other.

It is divided into three mutually isolated cavities, which isolate the output wire, the return wire and the external space respectively, and a larger space can be reserved for arranging the suction pipeline. This sub-cavity structure has better insulation, reduces the loss of energy in the middle, and makes the energy of the electrode cutter head more concentrated. The sub-cavity structure is also simpler and the assembly is more convenient.

Further, the tool bar is a hose, the inner cavity of the tool bar constitutes the perfusion channel, and the output channel and the return channel are arranged on the inner wall or the outer wall of the tool bar.

Further, two pipes are arranged on the inner wall of the cutter bar, and the two pipes form the output channel and the return channel respectively, and the rest of the inner cavity of the cutter bar except the pipes forms the perfusion channel, and is used for pumping. The straw provides installation space.

Further, the pipe and the cutter bar are integrally formed. Easy to manufacture.

Further, the cutter bar is made of nylon or silicone. The shank material meets biocompatibility.

Further, the electrode cutter head comprises an insulator, an inner electrode arranged on the insulator, and an outer electrode sheathed outside the insulator, the outer electrode is connected with the cutter bar, and the outer electrode is provided with a perfusion hole that communicates with the perfusion channel, and the outer electrode is A suction hole is arranged on the insulator, a suction tube connected to the suction hole is arranged in the cutter bar, an output lead and a return lead are respectively arranged in the output channel and the return channel, and the output lead is connected with the inner electrode , the return wire is connected to the external electrode.

Further, the outer electrode is sleeved with the cutter bar. Easy to connect and assemble.

Further, the handle is connected with a suction device, a perfusion tube and an electrode plug, the suction tube extends to the handle, and is connected to the suction device through a suction interface, the perfusion channel is communicated with the perfusion tube, and the output lead and return lead to the electrode plug.

Further, the insulator has a columnar structure and is made of high temperature-resistant plastic polytetrafluoroethylene, polyether ether ketone, polyimide or ceramics; the outer electrode is a stainless steel sleeve.

As mentioned above, the beneficial effects of the present invention are: the tool bar of the present invention adopts a deformable and bendable flexible bar, and its shape can be changed arbitrarily, so that it is easier to enter the human body cavity and reach the position requiring surgery, and The diameter of the cutter bar can be made smaller and softer, the field of vision will be clearer, and other tissues will not be mechanically injured during the operation, making the operation more convenient.

Description of drawings

Fig. 1 is the structural representation of the preferred embodiment of the present utility model;

Fig. 2 is the A-A direction view in Fig. 1;

Figure 3 shows several deformation structures of the section of the cutter bar;

Fig. 4 is the structural representation of the electrode cutter head of the utility model;

Figure 5 is a schematic diagram of the connection between the electrode cutter head and the cutter bar.

Part number description

1-electrode cutter head; 11-insulator; 12-outer electrode; 13-inner electrode; 14-perfusion hole; 2-tool bar; 21-perfusion channel; 22-output channel; 23-return channel; 24-pipeline; 25 - cannula; 3 - handle; 4 - suction device; 5 - perfusion tube; 6 - electrode plug; 7 - output lead; 8 - return lead; 9 - suction tube.

Detailed ways

The embodiments of the present invention are described below by specific embodiments, and those who are familiar with the technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

Example

As shown in Figures 1 and 2, a plasma surgical electrode structure includes a handle 3, a knife rod 2, an electrode cutter head 1, a suction device 4, an irrigation tube 5, an electrode plug 6, and the like. Among them, the perfusion tube 5 is used to inject physiological saline or other electrolyte solutions into the electrode cutter head 1; the suction device 4 is used to suction blood water or residual tissue with negative pressure; the electrode plug 6 is used to connect with the host for power supply; the handle 3 is used for It is held by the operator when operating the electrode; the cutter bar 2 is used to fix the electrode cutter head 1 and penetrate into the lesion position; the electrode cutter head 1 directly acts on the lesion position to form a plasma field and complete the surgical functions such as cutting and ablation.

The suction device 4, the perfusion tube 5 and the electrode plug 6 are connected with the handle 3, and the cutter bar 2 is connected between the electrode cutter head 1 and the handle 3. The key point is that the cutter bar 2 is a flexible bar. Wherein, the flexible rod is relative to the rigid knife rod 2 of the traditional electrode, the knife rod 2 can be deformed and bent, and its shape can be changed arbitrarily, so that it is easier to enter the human body cavity and reach the position requiring surgery, and The diameter of the cutter bar 2 can be made smaller and softer, the field of vision will be clearer, and other tissues will not be mechanically accidentally injured during the operation, making the operation more convenient.

Preferably, the cutter bar 2 is provided with an output channel 22 for installing the output wire 7 , a return channel 23 for installing the return wire 8 and a perfusion channel 21 for injecting the electrolyte solution. The cutter bar 2 is used to mount the electrode tip 1 on the one hand, and provides a wiring channel for the two electrodes of the electrode tip 1 and a channel for irrigation on the other hand, so that the cables can be routed and connected to the electrode plug 6 .

The inner cavity of the cutter bar is divided into three mutually isolated cavities, which isolate the output wire 7, the return wire 8 and the external space respectively. This split-cavity structure has better insulation, reduces the loss of energy in the middle, and makes the energy of the electrode cutter head 1 more concentrated. The sub-cavity structure is also simpler and the assembly is more convenient.

Preferably, the cutter bar 2 is a hose, the inner cavity of the cutter bar 2 constitutes the perfusion channel 21 , the suction pipe 9 is also arranged in the perfusion channel 21 , the output channel 22 and the return channel 23 are both arranged on the inner wall of the cutter bar 2 or All are arranged on the outer wall of the cutter bar 2; or one of them is arranged on the inner wall and the other is arranged on the outer wall, as shown in Figure 3 (b); Two channels are isolated between the inner walls to form the output channel 22 and the return channel 23, the perfusion channel 21 is formed in the sleeve 25, or the rest between the sleeve 25 and the inner wall of the cutter bar 2 constitutes the perfusion channel 21, and the suction pipe 9 is inserted from the cannula 25; see Fig. 3(c) for details.

As shown in Figure 2 and Figure 3(a), in this example, the inner cavity of the cutter bar 2 is divided into three channels, and the output channel 22 and the return channel 23 are respectively formed by the inner cavity of the pipe 24 arranged on the inner wall of the cutter bar 2, The rest of the inner cavity of the cutter bar 2 forms a perfusion channel 21 and provides an installation space for the suction tube 9 . In this example, in order to ensure the insulation effect, the output channel 22 and the return channel 23 are respectively arranged at the position where the inner wall of the hose is farthest away from each other. In this structure, a large space can be reserved for arranging the suction pipe 9 .

For ease of manufacture, the pipe 24 is integrally formed with the cutter bar 2 . The cutter bar 2 can be made of materials that meet biocompatibility, such as nylon and silicone. Preferably, the cutter bar adopts a nylon hose.

As shown in FIG. 4 and FIG. 5 , the electrode cutter head 1 includes an insulator 11 , an inner electrode 13 disposed on the insulator 11 and an outer electrode 12 sleeved outside the insulator 11 . The outer electrode 12 is connected to the cutter bar 2 , and the outer electrode 12 is There is a perfusion hole 14 communicated with the perfusion channel 21, the perfusion channel 21 is communicated with the perfusion pipe 5, the insulator 11 is provided with a suction hole, the knife rod 2 is provided with a suction pipe 9, and one end of the suction pipe 9 is provided It is connected with the suction hole, the other end extends to the handle 3, and is connected with the suction device 4 through the suction interface. The output channel 22 and the return channel 23 are respectively provided with an output lead 7 and a return lead 8. The output lead The front end of 7 is connected to the inner electrode 13 , the front end of the return wire 8 is connected to the outer electrode 12 ; the rear end of the output wire 7 and the back end of the return wire 8 are connected to the electrode plug 6 .

In order to facilitate assembly, the outer electrode 12 is sleeved with the cutter bar 2, which is convenient for connection and assembly. Specifically, the front end of the tool bar 2 has a stepped structure, which extends into the outer electrode 12 and is sleeved with the outer electrode 12 , or the outer electrode 12 is inserted into the front end of the tool bar 2 and is inserted into the tool bar 2 .

In this example, the insulator 11 has a cylindrical structure and is made of high temperature-resistant plastic PTFE, PEEK, polyimide or ceramic; the outer electrode 12 is a stainless steel sleeve, which is connected to the electrode through the return wire 8 Plug 6.

Among them, the stainless steel tube is used as the return pole, the inner electrode 13 on the insulator 11 is used as the output pole, the wires or conductive wires pass through the two pipes 24 of the cutter bar 2 respectively, and are connected with the cable of the electrode plug 6, and the suction tube 9 is also inserted into the cutter bar. 2 Inside, connected to the suction port at the handle 3 position. Physiological saline flows to the position of the perfusion hole 14 of the electrode cutter head 1 through the remaining gap inside the cutter bar 2 .

The structure and assembly of the utility model is simplified. Due to the assembling relationship between the cutter bar 2 and the electrode cutter head 1, the cutter bar 2 and the structure behind it have universality. As long as the electrode cutter head 1 is assembled, it is directly connected to the cutter bar 2. After that, welding can be completed at the handle 3 position. In actual production, as long as the electrode cutter head 1 is changed, the cutter bar 2 and its shank and other structures remain unchanged; different electrodes can be formed, thereby completing different operations and reducing production costs.

The utility model improves the operation efficiency, improves the practicability of the plasma electrode, and at the same time, it is easier to reach the lesion position, thereby reducing the damage to the patient, and helping the doctor to complete the operation more easily.

Anyone skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims (10)

1. A plasma surgical electrode structure is characterized in that: comprising a handle, a knife rod and an electrode cutter head, the knife rod is connected between the electrode cutter head and the handle, and the knife rod is a flexible rod, and the A perfusion channel for injecting the electrolyte solution is provided on the cutter bar. 2 . The plasma surgical electrode structure according to claim 1 , wherein a return channel for installing a return wire and an output channel for installing an output wire are provided on the knife bar, and the return channel and the output channel are provided with the return channel and the output channel. 3 . and the perfusion channel are isolated from each other. 3 . The plasma surgical electrode structure according to claim 2 , wherein the knife rod is a flexible tube, the inner cavity of the knife rod constitutes the perfusion channel, and the output channel and the return channel are arranged on the inner wall of the knife rod or the inner cavity of the knife rod. 4 . on the outer wall. 4 . The plasma surgical electrode structure according to claim 3 , wherein two pipes are provided on the inner wall of the knife bar, and the two pipes respectively form the output channel and the return channel, and the knife bar The rest of the inner cavity except the pipe forms the perfusion channel and provides installation space for the suction tube. 5 . The plasma surgical electrode structure according to claim 4 , wherein the pipe and the cutter bar are integrally formed. 6 . 6. The plasma surgical electrode structure according to any one of claims 1-5, wherein the knife bar is made of nylon or silica gel. 7 . The plasma surgical electrode structure according to claim 2 , wherein the electrode cutter head comprises an insulator, an inner electrode disposed on the insulator, and an outer electrode sheathed outside the insulator, and the The outer electrode is connected with the cutter bar, the outer electrode is provided with a perfusion hole that communicates with the perfusion channel, the insulator is provided with a suction hole, and the cutter bar is provided with a suction tube connected with the suction hole, and the output An output lead and a return lead are respectively arranged in the channel and the return channel, the output lead is connected with the inner electrode, and the return lead is connected with the outer electrode. 8 . The plasma surgical electrode structure according to claim 7 , wherein the outer electrode is sleeved with the cutter bar. 9 . 9 . The plasma surgical electrode structure according to claim 7 , wherein the handle is connected with a suction device, a perfusion tube and an electrode plug, the suction tube is connected with the suction device, and the perfusion channel is connected to the suction device. 10 . The perfusion tube is in communication, and the output lead and return lead are connected to the electrode plug. 10 . The plasma surgical electrode structure according to claim 7 , wherein the insulator has a cylindrical structure and is made of high temperature-resistant plastic PTFE, PEEK, polyimide or ceramics; 10 . The outer electrode is a stainless steel sleeve.