CN218009944U

CN218009944U - Microwave ablation electrode system with hemostasis function

Info

Publication number: CN218009944U
Application number: CN202122218922.8U
Authority: CN
Inventors: 唐淑君; 朱新峰
Original assignee: Shanghai Meiweida Medical Technology Co ltd
Current assignee: Shanghai Meiweida Medical Technology Co ltd
Priority date: 2021-09-14
Filing date: 2021-09-14
Publication date: 2022-12-13
Anticipated expiration: 2031-09-14

Abstract

The utility model discloses a microwave ablation electrode system with hemostasis function, which is characterized by comprising a microwave generator, an electrode needle and a handle, wherein a microwave ablation 5G system is arranged in the microwave generator, and a cooling system is arranged in the handle; the electrode needle comprises a ceramic needle head, an outer tube, an inner tube, a coaxial cable and a microwave antenna, wherein a choke tube is sleeved on the coaxial cable; at least one part of the outer wall of the outer tube is sleeved with a hemostatic device. The hemostatic device may be a hemostatic coating made of a biological hemostatic material; the hemostasis device also can be a guiding tube, the guiding tube comprises a normal temperature area and a cooling hemostasis area, a guide wire is arranged in the normal temperature area, an independent gas channel is arranged in the cooling hemostasis area, and an anti-adhesion sleeve is further arranged on the outer wall of the outer tube. The utility model discloses set up hemostasis device at the electrode needle outer wall, can solve the electrode needle and draw forth the problem of bleeding at the needle way that moves back the needle in-process and take place easily, can alleviate patient's operation misery, promote the patient to be recovered.

Description

Microwave ablation electrode system with hemostasis function

Technical Field

The utility model relates to the field of medical equipment, especially, relate to a microwave ablation electrode system of area hemostasis function.

Background

The history of the thermal ablation for treating substantive tumor diseases has been over 10 years, among a plurality of thermal ablation means, radio frequency ablation and microwave ablation are more and more widely applied clinically due to simple principle and convenient operation, and the thermal ablation is mainly used for treating substantive organ tumors, heart diseases, blood vessel diseases and the like. Among the two ablation methods, microwave ablation is more and more widely applied in clinical treatment of substantive tumors in recent years due to the characteristics of fast temperature rise, high efficiency, short operation time, no need of negative plates, no influence of surrounding environment and the like. The microwave ablation electrode needles on the market at present are various in types, most of the microwave ablation electrode needles only complete basic ablation functions, and the microwave ablation electrode needles are greatly deficient in safety control and ablation area shape optimization in the interventional operation process.

Microwave ablation systems typically include a microwave generator, a cooling system, disposable electrodes, and three main components. Wherein, the microwave generator is mainly used for the power energy required by the product system and controlling and monitoring the working state of the ablation system, and is the brain of the whole system. The cooling system exists because the microwave ablation system delivers high power, typically 50-150W, which is transmitted through a thin coaxial cable during the actual ablation procedure, with a large amount of heat loss during transmission, resulting in a sharp increase in the temperature of the transmission cable, which is used to cool the cable temperature. The disposable electrode part is usually designed according to the actual ablation part, and different application scenes are matched with different design needle types.

In the existing technology for lung ablation, due to the technical characteristics of the microwave ablation technology, the outer diameter of an electrode needle is usually 15G,16G and 17G, the thinnest outer diameter is about 1.5mm, and bleeding is easily caused in the puncture process to cause complications. The electrode needle is easy to irradiate into a needle channel to bleed in the needle withdrawing process after the ablation is finished. Does not have the function of stopping bleeding.

The utility model discloses a chinese utility model patent (No. CN 210749476U) discloses a visual sheath pipe structure for hepatobiliary surgery, including being used for inserting the internal sheath pipe body that forms temporary passage, sheath pipe one end is for inserting the end, and one end is the operation end, and the end surface coating of inserting melts hemostatic conductive coating after can switching on, is equipped with the wire along the axial in the pipe wall of sheath pipe body, and wire one end is connected with conductive coating, and outside the operation end was stretched out to the other end, provides temporary passage for various puncture operations, has the hemostasis function of melting after the switching on. The utility model discloses a with the utility model discloses a difference lies in, the utility model discloses a coating hemostasis biomaterial coating at microwave ablation electrode needle outer tube wall, or the cover establishes the guiding tube, adopts the hemostatic mode of low temperature gas cooling to carry out the needle way and stanchs, belongs to and increases the needle way function of stanching on microwave ablation electrode assembly.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned defect of prior art, the utility model discloses a microwave ablation electrode system of area hemostasis function through the institutional advancement to the electrode needle outer tube, increases the device that is used for hemostasis, solves the needle in-process needle track peripheral tissue problem of bleeding that moves back.

In order to solve the technical problem, the utility model adopts the following technical scheme:

a microwave ablation electrode system with a hemostasis function comprises a microwave generator, an electrode needle and a handle, wherein a microwave ablation 5G system is arranged in the microwave generator, and a water cooling system is arranged in the handle; the electrode needle comprises a ceramic needle head, an outer tube and an inner tube; a coaxial cable is arranged in the inner tube, a microwave antenna is arranged in the ceramic needle head, the tail part of the inner tube and the tail part of the coaxial cable are both connected with the handle, the front end of the coaxial cable is connected with the microwave antenna, and a choke tube is sleeved on the coaxial cable at a certain distance from the microwave antenna; at least one part of the outer wall of the outer tube is sleeved with a hemostatic device.

In the microwave ablation electrode system with the hemostasis function, the hemostasis device is a hemostasis biomaterial coating. The hemostatic biomaterial is aminomethylbenzoic acid, tranexamic acid, aprotinin or aminocaproic acid.

The microwave ablation electrode system with the hemostasis function is characterized in that the hemostasis device is a guide tube, the guide tube comprises a normal-temperature area and a cooling hemostasis area, and a guide wire is arranged in the normal-temperature area. The guide wire is heated after being electrified, and the heating temperature is 30 ℃ at most. And an independent gas channel is arranged in the cooling hemostasis area and is used for low-temperature cold air to pass through.

In the microwave ablation electrode system with the hemostasis function, the region of the outer wall of the outer tube, which is not covered by the hemostasis device, is provided with the anti-adhesion sleeve.

In the microwave ablation electrode system with the hemostasis function, the maximum radiation needle point of the electrode needle is 7mm, and the radiation needle point is approximately in a point radial shape.

According to the microwave ablation electrode system with the hemostasis function, the thermal resistance temperature measuring point is arranged at the water outlet of the water cooling pipeline in the handle, and the water temperature in the water circulation is measured.

The microwave ablation electrode system with the hemostasis function is characterized in that the lower part of the handle is provided with the electrode recognition module. The chip in the electrode identification module can identify the type of the electrode, and determines various parameters of the ablation power output by the system according to the identification result, so that accurate ablation is provided.

The utility model discloses mainly adopt and set up the mode of hemostatic material coating at electrode needle bar outer wall, perhaps set up low temperature for the gas passage way low temperature to the hemostatic mode of needle way peripheral tissue, solve the needle way problem of bleeding that the electrode needle takes place easily at the needle in-process that moves back, reduce the emergence probability of complication. And, the utility model discloses increased anti-adhesion sleeve pipe at the electrode needle outer tube, ensured that the electrode needle can not take place the adhesion with patient's health tissue, the utility model discloses can alleviate patient's operation misery, promote the patient to be recovered, improve patient's comfort level of seeking medical advice.

The conception, the specific structure and the technical effects produced by the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.

Drawings

FIG. 1 is a schematic structural view of a first embodiment of the present invention;

fig. 2 is a schematic structural diagram of a second embodiment of the present invention.

Wherein the reference numbers are as follows:

the medical catheter comprises a ceramic needle 1, a microwave antenna 2, a coaxial cable 3, a choke tube 4, a hemostatic protective coating 5, a guide tube normal temperature zone 6 and a guide tube cooling hemostatic zone 7.

Detailed Description

In order to make the technical means, the inventive features, the purpose and the efficacy of the present invention easy to understand, the present invention will be further explained by combining with the following detailed drawings. However, the present invention is not limited to the following embodiments.

It should be understood that the structure, proportion, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions of the present invention, so that the present invention does not have the substantial technical significance, and the modification of any structure, the change of the proportion relation or the adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the function and the achievable purpose of the present invention.

Example 1

As shown in fig. 1, a microwave ablation electrode system with hemostasis function comprises a microwave generator, an electrode needle and a handle, wherein a microwave ablation 5G system is arranged in the microwave generator, and a cooling system is arranged in the handle. The lower part of the handle is provided with an electrode recognition module which feeds back an electrode recognition result to the system, and the system calls out parameters such as a corresponding power output mode, ablation time and the like. Wherein, the electrode needle comprises a ceramic needle head 1, a stainless steel outer tube and an inner tube; the novel microwave endoscope comprises an inner tube, a ceramic needle head and a handle, and is characterized in that a coaxial cable 3 is arranged in the inner tube, a microwave antenna 2 is arranged in the ceramic needle head 1, the tail of the inner tube and the tail of the coaxial cable 3 are both connected with the handle, the front end of the coaxial cable 3 is connected with the microwave antenna 2, and a choke tube 4 is sleeved on the coaxial cable 3 at a certain distance from the microwave antenna 2.

The outer wall of the outer tube of the electrode needle is provided with a hemostatic protective coating 5, and the hemostatic protective coating 5 adopts a biological hemostatic material, such as aminomethylbenzoic acid, tranexamic acid, aprotinin or aminocaproic acid. The biological hemostatic material is coated on the surface of the electrode needle, and after the electrode needle is placed on a target focus, the biological hemostatic material can achieve the purpose of hemostasis on the needle channel of a non-ablation area after contacting with tissues around the needle channel.

Example 2

As shown in fig. 2, a microwave ablation electrode system with hemostasis function, wherein the internal structure of an electrode needle is the same as that of embodiment 1, and the electrode needle comprises a ceramic needle head 1, a stainless steel outer tube and an inner tube; the novel microwave endoscope comprises an inner tube, a ceramic needle head and a handle, and is characterized in that a coaxial cable 3 is arranged in the inner tube, a microwave antenna 2 is arranged in the ceramic needle head 1, the tail of the inner tube and the tail of the coaxial cable 3 are both connected with the handle, the front end of the coaxial cable 3 is connected with the microwave antenna 2, and a choke tube 4 is sleeved on the coaxial cable 3 at a certain distance from the microwave antenna 2.

The outer wall of the outer tube of the electrode needle is provided with a guiding tube for hemostasis protection, and the guiding tube comprises a guiding tube normal temperature zone 6 and a guiding tube cooling hemostasis zone 7. The guide tube normal temperature zone 6 is internally provided with an extremely fine guide wire which is heated after being electrified, and the guide tube cooling hemostasis zone 7 is internally provided with an independent gas channel for cooling low-temperature gas to flow in the gas channel, so that the hemostasis function of the guide tube normal temperature zone is realized through the sharp reduction of local temperature.

The embodiment enables hemostasis by low temperature when the electrode needle is inserted into a non-ablation area of human tissue through improving the structural design, and the tissue temperature of other areas is kept normal. In the use process of the guide tube normal temperature zone 6, the local temperature can be heated and raised and kept at 30 ℃ through the guide wire heating function. The guide tube cooling hemostasis area can instantly stop bleeding, when the electrode is placed in a target ablation area, before the ablation function is formally started, the instant hemostasis function of the microwave generator is started, and the system works according to a set default value to finish hemostasis operation.

The utility model discloses an ablation electrode system of area hemostasis function mainly used lung's microwave ablation has the 5G frequency channel, has the hemostasis function. The ultra-fine 5G frequency band electrode needle is used, and has an ultra-short electrode radiation area, wherein the radiation needle point is less than 7mm and is similar to an electrical radiation shape. A choke tube is added inside the electrode needle to enable the ablation area to be closer to a circle; a thermal resistance temperature measuring point is added at the handle, and the water temperature in the water circulation is monitored; an anti-adhesion sleeve is added at the outer part of the outer tube of the electrode needle, so that the electrode needle is prevented from being adhered to the body tissue of a patient. The utility model designs two methods for hemostasis, one is to increase the biological hemostatic coating on the surface of the electrode needle, so that the tissue around the needle channel can not bleed in the ablation process and the needle withdrawing process. The other is that through improving structural design, will have the electrode needle outer tube, increase the independent channel design that can be used to extremely low gas, use the low temperature mode to stanch to non-ablation region, utilize the mode that the very thin electric wire heats up simultaneously, keep other regional tissue temperature normal. Through the hemostasis function, the probability of surgical complications of the patient is reduced, and the rehabilitation of the patient is promoted.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the teachings of this invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. The microwave ablation electrode system with the hemostasis function is characterized by comprising a microwave generator, an electrode needle and a handle, wherein a microwave ablation 5G system is arranged in the microwave generator, and a water cooling system is arranged in the handle; the electrode needle comprises a ceramic needle head, an outer tube and an inner tube; a coaxial cable is arranged in the inner tube, a microwave antenna is arranged in the ceramic needle head, the tail part of the inner tube and the tail part of the coaxial cable are both connected with the handle, the front end of the coaxial cable is connected with the microwave antenna, and a choke tube is sleeved on the coaxial cable; at least one part of the outer wall of the outer tube is sleeved with a hemostatic device.

2. The system of claim 1, wherein the hemostatic device is a hemostatic biomaterial coating.

3. The system of claim 2, wherein the hemostatic biomaterial is aminomethylbenzoic acid, tranexamic acid, aprotinin, or aminocaproic acid.

4. The system of claim 1, wherein the hemostatic device is a guide tube comprising an ambient temperature zone and a cooled hemostatic zone, wherein a guidewire is disposed within the ambient temperature zone.

5. The system of claim 4, wherein the guidewire heats up when energized, the heating temperature being up to 30 ℃.

6. The system of claim 5, wherein a separate gas channel is provided in the cooled hemostasis area.

7. The system of any one of claims 1-6, wherein the outer tube is provided with an anti-adhesion sleeve in the region of the outer wall not covered by the hemostatic device.

8. The system of claim 1, wherein the electrode needle has a radiation tip of at most 7mm.

9. The system as claimed in claim 8, wherein a thermal resistance temperature measuring point is arranged at the water outlet of the water cooling pipeline in the handle to measure the water temperature in the water circulation.

10. The system of claim 9, wherein the handle is provided with an electrode recognition module at a lower portion thereof.