CN219579012U - Corrosion-resistant electrode needle and electrotherapy device - Google Patents

Abstract

The utility model relates to an anti-corrosion electrode needle and an electric treatment device, wherein the electrode needle comprises a needle head and a needle rod, the needle head is made of platinum or platinum alloy or covered by an outer platinum coating, and the needle rod is made of an electric insulation material, such as: a plastic; the electric conductor tube is arranged in the needle bar and is tightly attached to the inner wall of the needle bar, the electric conductor tube is fixedly connected with the inner wall of the needle head, when the electric conductor tube is used for supplying current, the needle head is electrified along with the electric conductor tube to form a treatment or/and detection effect, and the electric conductor tube also provides a rigid support for the needle bar, so that the puncture operation is convenient to be smoothly carried out; the electric therapeutic device can output various therapeutic energies, is provided with a temperature measuring circuit and an impedance measuring circuit, and controls the types and the polarities of the energy output by the electrode needle through the multi-path relay and the polarity selection current collector, and has the following advantages: only the needle part adopts platinum or platinum alloy, so that the production cost is saved; can be used as a cold and hot ablation needle and a needle head of a temperature probe, realizes the combination of electric ablation and cold and hot ablation, and avoids the difficult problems of repeated puncture and repeated positioning.

Description

Corrosion-resistant electrode needle and electrotherapy device

Technical field:

the utility model belongs to the field of medical appliances, and particularly relates to an anti-corrosion electrode needle and an electrotherapy device.

The background technology is as follows:

tumor ablation is now a common approach for the treatment of tumors, where electrical ablation therapy is an important branch of ablation technology. Electrical ablation can be classified into electrochemical ablation, electrical pulse (perforation) ablation, TTF alternating electric field ablation, radio frequency ablation, microwave ablation, and electro-cold ablation (combining freezing and the above-described electrical ablation methods), and the like. At present, most electrode needle bar materials adopt medical stainless steel or titanium alloy and the like and have the characteristics of biocompatibility, mechanical strength, convenient processing, low material cost and the like. However, in the process of electric ablation, a plurality of medical electrode needles made of stainless steel or titanium alloy and the like are corroded strongly due to electrolysis, and the electrode needles are damaged to human bodies in an immeasurable way.

Electrochemical ablation (also known as electrolytic ablation) has been used for the early 19 th century to deliver direct current into the treatment area through cathode and anode electrode needles inserted in the target tissue, the electrolytic reaction principle formula:

and (3) cathode: the reduction reaction occurs and the electrode circumference is alkaline.

The formula:

the main reaction at the cathode is the decomposition of water into hydrogen molecules and hydroxide ions.

Anode: oxidation reaction occurs and the periphery of the electrode is acidic.

The formula:

2Cl-→Cl2+2e-

the main reaction products at the anode are hydrogen ions, oxygen and chlorine. Chlorine is further reacted to HClO (hypochlorous acid).

A method of inducing local pH changes in the therapeutic range, changes in pH, resulting in a cytotoxic environment, and some new chemicals formed during electrolysis, which in turn lead to cell death.

Pulsed electric field ablation (i.e., electric pulse ablation) is an ablation mode in which high-voltage electric pulses are applied to phospholipid bilayer of a cell membrane in a short time to cause formation of transmembrane potential, thereby generating unstable potential, enabling the cell membrane to form irreversible penetrating damage, generating nanoscale pores, causing variation of permeability of the cell membrane, damaging homeostasis of the cell environment and finally causing apoptosis.

The radio frequency ablation is to intervene the electrode in the focus part, and to release radio frequency current to make the part reach high temperature and to coagulate and necrotize the lesion tissue, so as to reach the aim of treatment. The RF electrode needle can make the temperature in the tissue exceed 60 ℃, and cells die to generate a necrosis area; if the local tissue temperature exceeds 100 ℃, the tumor tissue and the parenchyma surrounding the organ are coagulated and necrotized, a large spherical coagulating and necrotic area can be generated during treatment, and a thermal therapy area of 43-60 ℃ is arranged outside the coagulating and necrotic area, and cancer cells can be killed in the thermal therapy area, and normal cells can be recovered.

Tumor electric field therapy (TumorTreating Fields, TTFields) is a cancer treatment that utilizes specific electric fields to interfere with cell division. It applies low-intensity and medium-frequency (100-300 kHz) alternating electric field to the microtubulin of proliferation cancer cells to interfere with the mitosis of tumor cells, so that the cancer cells can be apoptotic and the growth of tumor can be inhibited. Compared with the traditional treatment means such as surgery, radiotherapy, drug treatment and the like, the tumor electric field treatment has smaller side effect, and the effectiveness of the tumor electric field treatment has been proved by strict clinical verification.

The microwave ablation is to utilize a high-frequency electromagnetic wave, when the high-frequency electromagnetic wave acts on tumor tissue through an electrode, a great amount of microwave energy is absorbed by the tumor tissue, so that a great amount of heat is rapidly generated in the acted tumor tissue, and the tumor is instantaneously thermally solidified and necrotized due to high heat.

Cryoablation is a method of destroying and ablating diseased tissue using ultra-low temperatures, and is also the earliest historically used diseased tissue ablation technique in humans. One is that liquid nitrogen cryosurgery devices using phase change refrigeration techniques, such as liquid nitrogen as a low temperature working medium (refrigerant) and heated nitrogen as a high temperature working medium (heating medium), are used to treat various tumors. Another is the use of gas-throttling refrigeration techniques, such as argon helium knives using high pressure argon freezing and helium re-warming, which have been widely used in cryoablation therapy for a variety of benign and malignant tumors. In the cryosurgery treatment process, the density of the frozen area ice hockey puck changes, CT, ultrasonic or MRI guidance can be adopted, and the method has good intraoperative visibility. However, only the inner core part of the ice hockey ball produced by the simple cryosurgery treatment can be fully treated, the periphery of the ice hockey ball does not have the capability of complete ablation treatment, and the target area needs to be treated by combining electric ablation to realize the effect of the ice hockey ball.

Meanwhile, the platinum or platinum alloy ablation needle in the prior art and application has not been well applied because of high cost, poor rigidity and poor processability, and repeated disinfection and sterilization are more needed, so that a puncture electrode needle with low manufacturing cost, no electric corrosion and high strength is needed.

The utility model comprises the following steps:

the utility model provides an anti-corrosion electrode needle and an electric treatment device, and aims to solve the problems that the existing electrode needle can generate electrolytic corrosion and combine multiple ablation modes.

In order to solve the problems, the utility model provides an anti-corrosion electrode needle which comprises a needle head and a needle rod, wherein the needle head is fixedly connected with the needle rod; the needle head is made of platinum metal material, platinum alloy material or electrical conductor material with platinum coating, and is used as an electrode; the needle bar is made of an electrical insulator; the needle bar is internally provided with an electric conductor pipe which is fixedly connected with the needle head.

Further, the electric conductor pipe is a through pipe.

Further, the needle and the electric conductor tube are internally provided with a fluid tube for introducing cold or hot fluid.

Further, the fluid pipe is a phase change refrigeration fluid pipe or a gas throttling type refrigeration fluid pipe.

Furthermore, the anti-corrosion electrode needle head is provided with a platinum resistor or a temperature measuring thermocouple which is connected through an electric conductor and used for measuring the temperature of the needle head.

Further, the corrosion-resistant electrode needle head is connected through an electric conductor and used as one electrode for impedance measurement.

Further, at least one electrode is arranged on the needle rod, and the electrode is electrically insulated from the needle head and is respectively connected with the needle head through different electrode wires.

Further, the diameter of the end face of the electric conductor tube, which is in contact with the needle head, is the same, the needle rod covers the outer surface of the electric conductor tube and is partially and prolonged to be covered on part of the needle head, and the wall thickness of the needle rod is not more than 1mm.

Further, the needle bar is an insulating coating and partially covers the joint of the needle head and the electric conductor.

Further, the needle bar slides along the electric conductor tube and the needle surface, and at least one electrode is arranged on the needle bar.

Further, the length of the needle is 1mm to 50mm.

The utility model also comprises an electric therapeutic device matched with the anti-corrosion electrode needle, which comprises a host controller, wherein the host controller comprises a power supply, a central processing unit, a display and an electric control device,

the electric control device comprises an electrode relay, the electrode relay is electrically connected with the needle head, the electrode relay comprises a polarity selection relay and is used for controlling the polarity of the needle head, and the electric control device further comprises a multi-path relay; the electric control device comprises at least one of a direct current generator, an electric pulse generator, a TTF alternating electric field generator, a radio frequency generator and/or a microwave generator, and the opening and closing states of the electric control device are controlled through a multi-path relay, and the multi-path relay is electrically connected with the needle.

Furthermore, the electric treatment device further comprises a temperature measuring circuit and/or an impedance measuring circuit, wherein the temperature measuring circuit and/or the impedance measuring circuit are/is controlled by the multi-path relay, and the temperature measuring circuit and the impedance measuring circuit are used for calculating, adjusting and feedback controlling electric treatment parameters.

Further, the electrical treatment device also includes a cryoablation generator and a thermal ablation generator.

The utility model has the following advantages:

(1) Only the needle head part adopts platinum or platinum alloy, thereby saving the production cost and improving the rigidity, toughness and processability of the electrode needle.

(2) The platinum or platinum alloy/plating pinhead can be used as a pinhead for cold and hot ablation, so that the combination of electric ablation and cold and hot ablation is realized, and the problems of repeated puncture injuries and repeated positioning of two ablation electrodes are avoided.

(3) The platinum or platinum alloy electrode can be used for temperature measurement, the resistance temperature measurement degree of the platinum or platinum alloy is accurate, and the electrode needle can be combined with a temperature measurement thermocouple, so that the dual functions of an anti-corrosion electrode and temperature measurement are achieved. Avoid the repeated puncture injury and repeated positioning problems of the two ablation electrodes.

Description of the drawings:

FIG. 1 is a schematic cross-sectional view of a platinum alloy head base electrode needle according to the present utility model

FIG. 2 is a schematic view of a hollow electrode needle of a platinum alloy head according to the utility model

FIG. 3 is a schematic view of a platinum alloy head cryoablation needle in accordance with the present utility model

FIG. 4 is a schematic view of a platinum alloy head detection electrode needle according to the present utility model

FIG. 5 is a schematic view of a platinum alloy head dual electrode ablation needle of the utility model

FIG. 6 is a schematic view of a platinum iridium needle reinforced electrode needle in accordance with the present utility model

FIG. 7 is a schematic view of a slidable electrode needle of a platinum alloy needle head according to the present utility model

Fig. 8 is a schematic block diagram of an electrical ablation system of the utility model

The specific embodiment is as follows:

the following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or apparatus. The relevant descriptions regarding "proximal" and "distal" may refer to acting on a body part to distinguish, for example: the location proximal to the target area is referred to as the "proximal end", such as the sharp end of the needle; the location away from the target is referred to as the distal end, and this distance is referred to as the relative "proximal" concept.

The technical scheme of the utility model is described in detail below by specific examples. The following embodiments may be combined with each other, and some embodiments may not be repeated for the same or similar concepts or processes.

The utility model mainly comprises a middle electrode needle and an electric treatment device, wherein the electric treatment device mainly comprises a host controller, a central processing unit, a display and an electric control device, a cold source or a heat source which is not listed should be incorporated into the electric treatment device when the electric treatment device is required by application and can also be used as external matched equipment for matching, the central processing unit is used for calculating, storing and displaying information to a user, the electric control device mainly comprises at least one of a direct current generator, an electric pulse generator, a TTF alternating electric field generator, a radio frequency generator and a microwave generator, the treatment energy generator which is not listed can also be incorporated into the structure of the utility model in a simple combination way, the electric control device is connected with the electrode needle of the utility model through an electric lead, the main purpose of the electric control device is that the treatment energy can be transmitted to a treatment area through the needle of the electrode needle or other electrodes arranged on the electrode needle, the treatment area can generate electric/thermal treatment energy through the structure, one common matched equipment is a cryoablation generator, and the electric treatment device can transmit electric, cold and/or thermal treatment energy to the electrode needle through matching with the cryoablation generator; conventional thermal energy generators, such as steam generators, are also a common type of mating device; the electric control device also comprises a circuit relay, wherein the circuit relay mainly comprises a polarity selection relay and a multi-path relay, the multi-path relay is used for controlling the output switching of the therapeutic energy of different electric control devices, the polarity selection relay is used for controlling the polarity of the electrode needle, and the multi-path relay is used for controlling the opening and closing states of the therapeutic energy generator so as to control the therapeutic energy output by the electrode needle; the electrical treatment device can also be provided with a temperature measuring circuit and an electrical signal measuring circuit, wherein the electrical signal measuring circuit comprises an impedance measuring circuit, and the structure can be used for collecting temperature and impedance data of the electrode needle or the treatment area when the electrical treatment device is connected to the electrode needle by virtue of an electric wire or an electric conductor.

The electrode needle is mainly applied to electric ablation, and the treatment energy is transmitted to a human body through platinum, platinum alloy or a conductive needle with a platinum coating on the surface, and the specific platinum coating can be sprayed on a conductor by means of a sputtering technology; the transmission of the therapeutic energy depends on a conductor tube connected with a needle head, the conductor tube can be solid or hollow, and a needle rod arranged outside a conductor rod or an electric conductor tube is made of an insulating material so as to ensure that the therapeutic energy is fixed at a required therapeutic position and avoid damaging healthy tissues; the ablation mode which can be combined based on electric ablation comprises low-temperature ablation and high-temperature ablation, the low-temperature ablation is mainly cold fluid ablation, when a hollow structure in an electric conductor pipe is filled with fluid or sleeved with a gas throttling type cold fluid pipe, the cryoablation can be carried out, the fixing structure of the fluid pipe can refer to the fixing mode of a cryoablation needle in the prior art, namely, the fluid is arranged in the ablation needle with a gap, the fluid can flow back through the gap, the structure and similar disclosed structures are applied to the utility model in the same way, and the mode of additionally arranging a fluid return pipe/channel can also be applied to the utility model; cold fluid ablation includes, but is not limited to, cryogenic ablation represented by indirect contact of liquid nitrogen, carbon dioxide, etc. with the lesion through a fluid tube and argon and helium throttled cryogenic ablation represented by the joule thomson principle; meanwhile, the needle head can also be used as a generating end of thermal ablation, wherein the thermal ablation comprises a common mode of radio frequency, microwave and the like which reach high temperature through electric energy, or a thermal ablation mode of introducing a thermal fluid into a fluid pipe, and the thermal fluid comprises a gaseous (such as steam) or liquid thermal fluid.

In summary, the needle applicable to the present utility model includes a combined electrode needle formed by combining low temperature ablation and high temperature ablation based on electrical ablation, which can be combined in any way; the three energies (electric, cold and hot) can achieve different technical effects through combined use of the structure of the utility model by the electric treatment device. When the cryoablation is combined with the electric ablation and used in the utility model, the ice ball is generated at the needle head part, the area covered by the ice ball still cannot be completely ablated after the ice ball is generated, the boundary position of the ice ball cannot be completely ablated due to insufficient temperature, and at the moment, the electric treatment energy (including modes of TTF tumor treatment electric field, direct current ablation, pulse electric ablation and the like) is input into the needle head and the possibly arranged additional electrode of the utility model, so that the ice ball boundary can be effectively ablated, the effect can be obtained when the boundary of the ice ball is large, and the treatment range is large; the needle head can be connected with an electric heating generating device, when the cryotherapy is completed, the target area needs to be rewarmed, and at the moment, the target area can be rewarmed by releasing the heat energy to the needle head through the electric heating generating device; in the process of electrothermal ablation (such as radio frequency treatment), the electrode needle has the risk of accidental injury to human body caused by overheat, and when the conductor tube is of a hollow structure and the inside of the conductor tube is provided with a fluid tube, the electrode needle can be cooled by combining with cold fluid for matching use, so that the operation safety is ensured; in the treatment process, cells can be permeabilized by low temperature, high temperature or electrical stimulation with certain intensity so as to promote apoptosis, so that a plurality of treatment modes which can be simultaneously applied in the utility model have the meanings of mutually promoting and jointly effecting, for example: the structure of the utility model comprises a fluid pipe (phase-change refrigeration or air-throttling refrigeration and the like) for refrigerating a target area, cells are permeabilized after refrigeration, cell membranes are broken, then direct current or electric pulse is introduced for electric treatment, the permeabilized cells are stimulated by electricity to accelerate apoptosis, and the cells subjected to supercooling treatment can be more rapidly apoptotic in unit time in the same electric treatment mode, so that the combination of three treatment modes of electricity/cold/heat has complementary technical effects, but not only three modes which are isolated.

An important application is that the needle head made of platinum or platinum alloy (such as platinum iridium) can make the electrode needle be used as an anode electrode needle and a temperature measuring couple at the same time; the utility model combined with the electrode needle and the temperature probe can increase the function of the electrode needle and simultaneously effectively reduce the damage to the body of a patient in the operation process; the platinum iridium needle is used as a puncture needle and also as an anode electrode for electric ablation, and generally, a medical apparatus is made of conductive materials, for example: the stainless steel is used as the anode, which can generate electric corrosion with different degrees, but the platinum and platinum alloy electrode can not generate electric corrosion in the action area when performing direct current ablation and/or electric pulse ablation so as to generate electrolysis products (namely electric corrosion substances falling off from the electrode needle), so that electrochemical damage to a patient is avoided, the safety of ablation treatment is ensured, the platinum or platinum alloy electrode is selected as an anode and is a preferable scheme, but is also suitable as a cathode, and the switching between the anode and the cathode can be realized by virtue of a polarity selection circuit relay arranged on an electric treatment device; the utility model can be provided with an impedance measuring circuit, and particularly is connected to the needle head through the measuring electrode and collects data to the electric treatment device, and the data collected by the electric treatment device is matched with the other electrode (the electrode needle can be additionally inserted), wherein the collected data is an electric signal, including but not limited to impedance, a preferable measuring electrode wire or an electric conductor can be led in from the inside of the electric conductor tube, and the collected electric signal is helpful for positioning and simulating a lesion position; the preferred length of the needle head of the electrode needle is 1-50mm, a 1mm structure is adopted, namely, the part with the end points is platinum, platinum alloy or sprayed platinum coating, and 50mm is a length which is easier to process, and the length is more suitable for large-scale ablation treatment; while the overall diameter of the electrode needle is generally controlled below 5mm, preferred specifications include 2.8mm, 2.4mm, 1.7mm and 1.2mm, and the needle shaft of the electrode needle has a wall thickness of not more than 1mm, for example, 0.3mm wall thickness, in combination with a conductor tube having a diameter of 2.2mm, forms a 2.8mm diameter electrode needle.

In the case of selecting or matching different electrode pins (electrical, thermal, cold combinations), other structures are involved that need to be distinguished from individual electrochemical electrode pins, such as: when a chilled electrode needle or an electrically chilled electrode needle is used, it is considered that the electrode needle comprises a thermal insulation layer; in the case of a sliding connection, only a basic, closely fitting sliding mode is shown in the present utility model, and the sliding mode commonly used in the prior art, such as a mode of fixing on a needle bar or a needle bar outer sleeve by a push block or providing other sliding components, is not listed, and is based on the prior art in the present field, but merely an embodiment modification, and similar to this, it cannot be illustrated in the examples, but it should be taken as common knowledge in the art according to the prior art, and the description of the location should not be regarded as an unclear description or lack of key components, and is described below in connection with the examples.

Example 1: referring to fig. 1, fig. 1 shows a platinum alloy head base electrode needle 1, which in this embodiment comprises a first needle 101, a first needle shaft 102 and a first conductor 103, wherein a first electrical wire 104 is connected to the first conductor 103 to provide electrical energy transmission, one end of the first needle 101 is sharp, and the platinum or platinum alloy can be a conductive material with a platinum coating, wherein the platinum iridium alloy is a preferred platinum alloy, the first needle 101 is used as an electrode, and has the characteristic of not generating electric corrosion compared with a conventional electrode when being used as an anode, and the first needle 101 can be of a solid or at least partially hollow structure; one end of the first needle shaft 102 is fixedly connected with a non-sharp end (proximal end) of the first needle 101, and the interior of the first needle shaft 102 is of a hollow structure, and an electrical insulator is selected as a material, for example: plastics or ceramics; the first conductor 103 is made of an electric conductor, such as stainless steel; the first conductor 103 is arranged inside the first needle bar 102 in a penetrating way and is communicated with the inside of the first needle 101, the first needle 101 can be electrified by supplying power to the first conductor 103, and particularly, the electric treatment energy can be transmitted to the first needle 101, the electric treatment energy can be in an ablation mode such as direct current ablation, electric pulse ablation, TTF electric field treatment, radio frequency ablation, microwave ablation and the like according to the device connected to the embodiment, and the device for treating by applying an electrode structure can be connected with the utility model and the embodiment; referring to fig. 2, fig. 2 is a hollow electrode needle 2 with a platinum alloy head, unlike the structure of fig. 1, the wall thickness of the first needle bar 102 is thinner, the first conductor 103 is replaced by a first conduit 201, the first conduit 201 is of a hollow structure and is at least partially connected with the first needle 101 to ensure electrical communication, the first conduit 201 provides electric energy transmission through a second electric wire 202, the first conduit 201 can be used as a fluid pipe, and the first needle bar 102 and the first needle 101 can transfer heat by introducing cold/hot fluid into the first conduit 201, and the functions of cold/hot ablation or electrode cooling, target zone reheating and the like can be completed by controlling the temperature of an action zone; referring to fig. 4, fig. 4 is a platinum alloy head detection electrode needle, in contrast to fig. 2, a first collection wire 401 is led into the hollow structure of the first catheter 201 to connect with the first needle 101, and one or more first collection wires 401 may be provided as required, and the function of the first collection wire is mainly used for detecting/collecting information, and similarly, the first collection wire 401 may also be provided with an external portion of the platinum alloy head detection electrode needle directly connected with the external surface of the first needle 101, which is connected to the detection device of the present utility model and the present embodiment to detect/collect the impedance of the target and/or the temperature of the target; referring to fig. 5, fig. 5 is a platinum alloy head dual electrode ablation needle, which is different from the structure of fig. 1 in that at least one first therapeutic electrode 501 is provided on the outer surface of the first needle shaft 102, a third electrical wire 502 is connected with the first therapeutic electrode 501 to provide electric energy transmission, a dual electrode structure (which is electrically insulated from the first needle 101) is formed by the first therapeutic electrode 501 and the first needle 101, and the dual electrode structure can form an electric/electrothermal therapeutic circuit or TTF tumor therapeutic electric field according to the connected therapeutic generating device, and the first needle 101 and the first therapeutic electrode 501 connected by different electrode wires can form the same or opposite polarities.

Example 2: referring to fig. 3, fig. 3 is a platinum alloy head electric cold ablation needle, in this embodiment, a cold fluid tube 301 and a vacuum tube 302 are disposed inside the first cutter bar 102, and the vacuum tube 302 is made of a conductive material, for example: stainless steel; the vacuum tube 302 is connected by a fourth electrical wire 303 to provide electrical energy transmission, and the cold fluid tube 301 may be one of a phase change refrigeration fluid tube or a throttling refrigeration fluid tube, and the cold fluid passing through the interior is different according to the type of tube selected, for example: the choice of liquid nitrogen, carbon dioxide, helium or argon, and the specific cold fluid should be determined according to the situation, and it should be noted that the fluid reflux mode can be that a fluid reflux pipe is independently arranged for pumping or the reflux can be performed by depending on the clearance between the cold fluid pipe 301 and the vacuum pipe 302; the vacuum tube 302 is fixed on the inner wall of the first cutter bar 102 and at least partially fixed on the inner wall of the first cutter head 101, and when the vacuum tube 302 is electrified, the first cutter head 101 is electrified; an electrical insulation layer is preferably provided on the outer surface of the vacuum tube 302 to ensure that after supercooled ablation, cold fluid that may remain is not electrolyzed during the electrotherapy to produce excess electrolysis products or fluids; the structure of this embodiment can synchronously/asynchronously complete freezing/and electric ablation, and simultaneously, the cold fluid pipe 301 can also be filled with hot fluid to perform thermal ablation in combination with the above-mentioned situations, namely: the cold, heat and electricity ablation can be completed through the structure of the embodiment, meanwhile, cold/heat fluid can be introduced to regulate and control the temperature of the embodiment, and fluid with corresponding temperature can be introduced when the electrode needle needs to be re-warmed or cooled.

Example 3: referring to fig. 6, fig. 6 is a platinum iridium needle reinforced electrode needle 6, compared with fig. 1, the structure replaces the first conductor 103 and the first cutter bar 102 by a reinforced conductor bar 601 and an electric insulation outer layer 602 respectively, and the action principle is similar and the functions are the same, but the structure has stronger rigidity in the process of performing puncture operation, so that puncture intervention is facilitated; the fifth electrical lead is connected to the reinforcing bar 601 and provides electrical energy transmission. Referring to fig. 7, fig. 7 is a platinum alloy needle slidable electrode needle 7, differing from the structure of fig. 6 in that the surface or inside (surface exposed) of the electrically insulating outer layer 602 is provided with a second electrode 701; in this embodiment, the electrically insulating outer layer 602 and the reinforcing conductor bar 601 are in a sliding connection structure, so that the second electrode 701 slides along with the electrically insulating outer layer, and an electric/electrothermal treatment circuit or a TTF tumor treatment electric field with a controllable range is formed between the first needle 101 and the second electrode 701; a sixth electrical lead 702 is connected to the second electrode 701 and provides electrical energy transmission.

Referring to fig. 8, fig. 8 is an electrotherapy device for use with the electrode needle of the above embodiment, comprising a host controller including a power supply, a central processing unit, a display and an electrical control device. A basic electric control device comprises an electric pulse generator, and a direct current generator, a TTF alternating electric field generator, a radio frequency generator and/or a microwave generator can be configured on the basis of the electric pulse generator; the above-mentioned multiple electric therapeutic generators are controlled by electrode relays, specifically, the open-close state of the output is controlled by the multiple relays, so that the electrode needles output the corresponding electric therapeutic energy, and the multiple relays are electrically connected with the needle heads; the electrode relay also comprises a polarity selection relay which is used for controlling the polarity of the needle head or other electrodes arranged on the electrode needle;

the electric treatment device also comprises a temperature measuring circuit and/or an impedance measuring circuit, wherein the temperature measuring circuit and/or the impedance measuring circuit are/is controlled by a multi-path relay, the temperature measuring circuit and the impedance measuring circuit are used for calculating, adjusting and feedback controlling electric treatment parameters, and the temperature measuring circuit and/or the impedance measuring circuit used as detection when carrying out direct current or pulse current treatment are/is in a closed state to prevent damage;

the electrotherapeutic device can also comprise a cryoablation generator and a thermal ablation generator, wherein the generator is mainly applied to the electrode needle with the fluid pipe, fluid is led into the fluid pipe through the generator, and the fluid is led out of the electrode needle through the clearance between the fluid pipe and the conductor pipe so as to achieve the purpose of ablation or temperature control.

Claims (14)

1. An anti-corrosion electrode needle, characterized in that:

(1) The needle comprises a needle head and a needle rod, wherein the needle head is fixedly connected with the needle rod;

(2) The needle head is made of platinum metal material, platinum alloy material or electrical conductor material with platinum coating, and is used as an electrode;

(3) The needle bar is made of an electrical insulator;

(4) The needle bar is internally provided with an electric conductor pipe which is fixedly connected with the needle head.

2. The corrosion resistant electrode needle of claim 1, wherein: the electric conductor pipe is a through pipe.

3. The corrosion resistant electrode needle of claim 2, wherein: the needle and the electric conductor tube are internally provided with a fluid tube for introducing cold or hot fluid.

4. The corrosion-resistant electrode needle of claim 3, wherein: the fluid pipe is a phase change refrigeration fluid pipe or a gas throttling type refrigeration fluid pipe.

5. The corrosion resistant electrode needle of claim 2, wherein: the anti-corrosion electrode needle head is provided with a platinum resistor or a temperature measuring thermocouple which is connected through an electric conductor and used for measuring the temperature of the needle head.

6. The corrosion resistant electrode needle of claim 2, wherein: the corrosion-resistant electrode needle head is connected through an electric conductor and used as one electrode for impedance measurement.

7. The corrosion resistant electrode needle of claim 1, wherein: the needle bar is provided with at least one electrode, and the electrode is electrically insulated from the needle head and is respectively connected with the needle head through different electrode wires.

8. The corrosion resistant electrode needle of claim 1, wherein: the diameter of the end face of the electric conductor tube, which is in contact with the needle head, is the same, the needle rod covers the outer surface of the electric conductor tube and is partially and prolonged to be covered on part of the needle head, and the wall thickness of the needle rod is not more than 1mm.

9. The corrosion resistant electrode needle of claim 8, wherein: the needle bar is an insulating coating and partially covers the joint of the needle head and the electric conductor.

10. The corrosion resistant electrode needle of claim 7, wherein: the needle bar slides along the electric conductor tube and the needle surface, and at least one electrode is arranged on the needle bar.

11. The corrosion resistant electrode needle of claim 1, wherein: the length of the needle is 1mm to 50mm.

12. An electrotherapy device incorporating an electrode needle as claimed in any one of claims 1 to 11, comprising a host controller, said host controller including a power supply, a central processor, a display and an electrical control device, characterised in that:

(1) The electric control device comprises an electrode relay, the electrode relay is electrically connected with the needle head, the electrode relay comprises a polarity selection relay and is used for controlling the polarity of the needle head, and the electric control device further comprises a multi-path relay;

(2) The electric control device comprises at least one of a direct current generator, an electric pulse generator, a TTF alternating electric field generator, a radio frequency generator and/or a microwave generator, and the opening and closing states of the electric control device are controlled through a multi-path relay, and the multi-path relay is electrically connected with the needle.

13. An electrotherapy device as claimed in claim 12, wherein: the electrical treatment device further comprises a temperature measuring circuit and/or an impedance measuring circuit, wherein the temperature measuring circuit and/or the impedance measuring circuit are/is controlled by the multi-path relay, and the temperature measuring circuit and the impedance measuring circuit are used for calculating, adjusting and feedback controlling electrical treatment parameters.

14. An electrotherapy device as claimed in claim 12, wherein: the electrical treatment device further includes a cryoablation generator and a thermal ablation generator.