CN111956323A - Temperature-adjustable ablation needle - Google Patents
Temperature-adjustable ablation needle Download PDFInfo
- Publication number
- CN111956323A CN111956323A CN202010886073.0A CN202010886073A CN111956323A CN 111956323 A CN111956323 A CN 111956323A CN 202010886073 A CN202010886073 A CN 202010886073A CN 111956323 A CN111956323 A CN 111956323A
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- Prior art keywords
- water
- needle
- sleeve
- pipe
- coaxial cable
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/1815—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using microwaves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00005—Cooling or heating of the probe or tissue immediately surrounding the probe
- A61B2018/00011—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids
- A61B2018/00023—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids closed, i.e. without wound contact by the fluid
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00577—Ablation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00642—Sensing and controlling the application of energy with feedback, i.e. closed loop control
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00696—Controlled or regulated parameters
- A61B2018/0072—Current
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00773—Sensed parameters
- A61B2018/00791—Temperature
- A61B2018/00821—Temperature measured by a thermocouple
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/1815—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using microwaves
- A61B2018/1869—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using microwaves with an instrument interstitially inserted into the body, e.g. needles
Abstract
The invention discloses a temperature-adjustable ablation needle, which comprises a needle head, a needle tube, an inner water tube, a microwave coaxial cable, a water inlet sleeve, a water outlet sleeve, a sealing plug, a negative pressure device, a temperature sensor, a display screen and a current adjusting device, wherein the needle head is connected with the inner water tube; the microwave coaxial cable part is arranged in the inner water pipe and is coaxial with the inner water pipe, and the inner water pipe part is arranged in the needle pipe and is coaxial with the needle pipe; the negative pressure device is respectively communicated with the water inlet sleeve and the water outlet sleeve; a first channel is formed in a gap between the microwave coaxial cable and the inner water pipe, a second channel is formed in a gap between the inner water pipe and the needle tube, and the first channel is communicated with the second channel; the water inlet sleeve is arranged on the peripheries of the microwave coaxial cable and the inner water pipe, a first cavity is formed among the water inlet sleeve, the microwave coaxial cable and the inner water pipe, the water outlet sleeve is arranged on the peripheries of the inner water pipe and the needle tube, and a second cavity is formed among the water outlet sleeve, the inner water pipe and the needle tube; an opening is arranged on the water outlet sleeve, and the sealing plug is matched with the opening.
Description
Technical Field
The invention relates to the field of medical treatment, in particular to an ablation needle capable of adjusting temperature.
Background
In recent years, microwave ablation has been rapidly developed as a main means in clinical tumor treatment, which can directly puncture a microwave ablation needle to a central region of a human tissue focus, such as a tumor part, under the guidance of modern images such as B-ultrasonic or CT, polar molecules in the tissue move at a high speed under the action of a microwave field and rub against each other to generate heat, the temperature in the tumor is rapidly increased, when the temperature is increased to about 60 ℃, cancer cell proteins are denatured and solidified to cause irreversible dehydration necrosis, and the tumor is inactivated in situ, so that the microwave ablation needle has the remarkable characteristics of small wound, accuracy, high efficiency, few complications and the like.
During microwave transmission, polarization and conduction effects are generated in the insulating dielectric layer due to the action of the high-frequency electric field, causing microwave energy loss, called dielectric loss, which is expressed in the form of converting microwave energy into heat energy. The medium loss heat of the microwave coaxial cable of the microwave ablation needle inserted into the human body and the heat accumulated along with the continuous transmission of the microwave energy can reach very high temperature; if the temperature cannot be adjusted in time, heat can be conducted to normal tissues in contact with the microwave ablation needle, serious burn risks can be caused, troubles are brought to doctors who perform operations, and meanwhile the temperature can exceed the self-adjusting function of the physiology of a patient to the temperature, and medical accidents are caused.
Disclosure of Invention
The invention aims to provide an ablation needle with adjustable temperature, and aims to solve the problem that medical accidents can be caused by overhigh temperature in the working process of the ablation needle in the prior art.
In order to realize the purpose, the invention provides a temperature-adjustable ablation needle, which comprises a needle head, a needle tube, an inner water tube, a microwave coaxial cable, a water inlet sleeve, a water outlet sleeve, a sealing plug, a negative pressure device, a temperature sensor, a display screen and a current adjusting device, wherein the needle head is connected with the needle tube; the needle head is connected with the needle tube, the microwave coaxial cable part is arranged in the inner water tube and is coaxial with the inner water tube, and the inner water tube part is arranged in the needle tube and is coaxial with the needle tube; the negative pressure device is respectively communicated with the water inlet sleeve and the water outlet sleeve; a first channel is formed in a gap between the microwave coaxial cable and the inner water pipe, a second channel is formed in a gap between the inner water pipe and the needle tube, and the first channel is communicated with the second channel; the water inlet sleeve is arranged on the peripheries of the microwave coaxial cable and the inner water pipe, a first cavity is formed among the water inlet sleeve, the microwave coaxial cable and the inner water pipe, the water outlet sleeve is arranged on the peripheries of the inner water pipe and the needle tube, and a second cavity is formed among the water outlet sleeve, the inner water pipe and the needle tube; an opening is arranged on the water outlet sleeve, and the sealing plug is matched with the opening; water flows back to the second chamber from the second chamber through the negative pressure device, the first chamber, the first channel and the second channel in sequence; the temperature sensor is arranged on the surface of the microwave coaxial cable and is in signal connection with the display screen; the current adjusting device is electrically connected with the microwave coaxial cable.
Preferably, the water purifier is further provided with a water inlet pipe and a water outlet pipe, the water inlet pipe is communicated with the first cavity, the water outlet pipe is communicated with the second cavity, the negative pressure device is respectively connected with the water inlet pipe and the water outlet pipe, and water flows back to the second cavity from the second cavity through the water outlet pipe, the negative pressure device, the water inlet pipe, the first cavity, the first channel and the second channel in sequence.
Preferably, the negative pressure device is a negative pressure pump.
Preferably, the water inlet sleeve and the water outlet sleeve are both made of heat-conducting plastics.
Preferably, the sealing plug is made of rubber.
Preferably, the current regulating device is a varistor.
Preferably, the temperature sensor is a thermocouple.
Preferably, the coaxial cable further comprises a transition sleeve which is made of transparent material and is arranged at the periphery of the coaxial cable.
Preferably, the inner water pipe and the needle tube are both made of stainless steel.
Preferably, one end of the water inlet sleeve is hermetically connected with the microwave coaxial cable, and the other end of the water inlet sleeve is hermetically connected with the periphery of the inner water pipe; one end of the water outlet sleeve is hermetically connected with the needle tube, and the other end of the water outlet sleeve is hermetically connected with the water inlet sleeve.
Compared with the prior art, the invention has the advantages that:
the temperature-adjustable ablation needle has a good temperature adjusting effect, ensures that the microwave ablation needle can still stably work under the conditions of high microwave output power and long-time working state, can adjust the working current in time to adapt to the condition of a patient, and is not easy to generate medical accidents; meanwhile, the water is recycled, water resources are saved, and a water storage device is not required to be additionally arranged.
Drawings
FIG. 1 is a schematic view of an adjustable temperature ablation needle of the present invention;
fig. 2 is a sectional view taken along a-a in fig. 1.
The reference numbers in the figures illustrate:
1. a water inlet sleeve; 2. discharging the water jacket; 3. a transition sleeve; 4. a microwave coaxial cable; 5. a water inlet pipe; 6. a water outlet pipe; 7. a needle tube; 8. a needle head; 9. an inner water pipe; 10. a first chamber; 11. a second chamber; 12. a first channel; 13. a second channel; 14. a display screen; 15. a temperature sensor; 16. a sealing plug; 17. and a current regulating device.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise specifically stated or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are used in a broad sense, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, or a communication between two elements, and those skilled in the art will understand the specific meaning of the terms in the present invention specifically.
Referring to fig. 1 and 2, an ablation needle capable of adjusting temperature includes a needle head 8, a needle tube 7, an inner water tube 9, a microwave coaxial cable 4, a water inlet sleeve 1, a water outlet sleeve 2, a sealing plug 16, a negative pressure device (not shown), a temperature sensor 15, a display screen 14 and a current adjusting device 17; the needle head 8 is connected with the needle tube 7, part of the microwave coaxial cable 4 is arranged in the inner water tube 9 and is coaxial with the inner water tube 9, and part of the inner water tube 9 is arranged in the needle tube 7 and is coaxial with the needle tube 7; the negative pressure device is respectively communicated with the water inlet sleeve 1 and the water outlet sleeve 2; a first channel 12 is formed in a gap between the microwave coaxial cable 4 and the inner water pipe 9, a second channel 13 is formed in a gap between the inner water pipe 9 and the needle tube 7, and the first channel 12 is communicated with the second channel 13; the water inlet sleeve 1 is arranged on the peripheries of the microwave coaxial cable 4 and the inner water pipe 9, a first cavity 10 is formed between the water inlet sleeve 1 and the microwave coaxial cable 4 as well as between the water outlet sleeve 1 and the inner water pipe 9, the water outlet sleeve 2 is arranged on the peripheries of the inner water pipe 9 and the needle tube 7, and a second cavity 11 is formed between the water outlet sleeve 2 and the inner water pipe 9 as well as between the water outlet sleeve 2 and the needle tube 7; an opening (not shown) is arranged on the water outlet sleeve 2, and the sealing plug 16 is matched with the opening; water flows back to the second chamber 11 from the second chamber 11 through the negative pressure device, the first chamber 10, the first channel 12 and the second channel 13 in sequence; the temperature sensor 15 is arranged on the surface of the microwave coaxial cable 4 and is in signal connection with the display screen 14; the current adjusting device 17 is electrically connected with the microwave coaxial cable 4.
During the process of treating a patient by using ablation, a large amount of heat is generated around the microwave coaxial cable 4, which may cause damage to the patient and may also cause damage to the equipment itself, and the specific heat capacity of water is large, so that the cooling effect is good. The negative pressure device is preferably a negative pressure pump; the temperature-adjustable ablation needle is also provided with a water inlet pipe 5 and a water outlet pipe 6, the water inlet pipe 5 is communicated with the first cavity 10, the water outlet pipe 6 is communicated with the second cavity 11, and the negative pressure device is respectively connected with the water inlet pipe 5 and the water outlet pipe 6, so that water flows back to the second cavity 11 from the second cavity 11 through the water outlet pipe 6, the negative pressure pump, the water inlet pipe 5, the first cavity 10, the first channel 12 and the second channel 13 in sequence under the action of the negative pressure pump, and the circulation of the water is realized; in the process, most of the microwave coaxial cable 4 is coated by the water in the first chamber 10 and the first channel 12, and the flowing water takes away the heat generated by the microwave coaxial cable 4, so that the temperature of the microwave coaxial cable 4 is greatly reduced; meanwhile, the water inlet sleeve 1 and the water outlet sleeve 2 are both made of heat-conducting plastics, so that heat can be dissipated into the air, and the heat dissipation effect is further improved; therefore, the ablation needle has sufficient cooling effect, ensures that the ablation needle can still stably work under the conditions of high microwave output power and long-time working state, and is not easy to generate medical accidents; meanwhile, the water is recycled, and water resources are saved.
As an embodiment of the present invention, one end of the water inlet sleeve 1 is hermetically connected to the microwave coaxial cable 4, and preferably, a sealing ring (not shown) is disposed between the water inlet sleeve 1 and the microwave coaxial cable 4; a sealing ring is also arranged between the other end of the water inlet sleeve 1 and the periphery of the inner water pipe 9, so that the sealing performance of the first cavity 10 is ensured, and the first cavity 10 is not leaked even if being filled with water.
Similarly, a sealing ring (not shown) is arranged between one end of the water outlet sleeve 2 and the needle tube 7 to realize sealing connection, and the other end of the water outlet sleeve is connected with the water inlet sleeve 1 in a sealing way, so that the sealing performance of the second chamber 11 is ensured, and the second chamber 11 can not leak even if being filled with water.
Further, the sealing plug 16 is made of rubber and has certain elasticity, so that the sealing plug can be effectively matched with the opening of the water outlet sleeve 2 to prevent water leakage; therefore, the water outlet sleeve 2 can be used as a water storage container, the water storage container does not need to be additionally arranged, and the volume of the ablation needle is reduced so as to be convenient to operate.
The temperature sensor 15 is a thermocouple, and is arranged on the surface of the microwave coaxial cable 4, so that the temperature of the surface can be monitored in real time; meanwhile, the temperature sensor 15 is in signal connection with the display screen 14, so that the temperature can be displayed through the display screen 14 in real time.
The current adjusting device 17 is a rheostat and the rheostat is electrically connected with the microwave coaxial cable 4, so that when an operator observes the temperature displayed by the display screen 14, the rheostat can be adjusted according to the situation, the working current of the microwave coaxial cable 4 is adjusted to adapt to the situation of a patient, and medical accidents are not easy to occur.
The temperature-adjustable ablation needle further comprises a transition sleeve 3, wherein the transition sleeve 3 is made of a transparent material and is arranged on the periphery of the coaxial cable, so that the conditions of the microwave coaxial cable 4 and the temperature sensor 15 arranged on the surface of the microwave coaxial cable 4 can be observed conveniently.
The inner water pipe 9 and the needle tube 7 are both made of stainless steel, so that water cannot be polluted, and the service life is long; the needle head 8 of the water-cooling type ablation needle is conical, and an insulating layer is arranged between the needle head 8 and the needle tube 7.
The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (10)
1. An ablation needle capable of adjusting temperature, characterized in that: the device comprises a needle head, a needle tube, an inner water pipe, a microwave coaxial cable, a water inlet sleeve, a water outlet sleeve, a sealing plug, a negative pressure device, a temperature sensor, a display screen and a current adjusting device; the needle head is connected with the needle tube, the microwave coaxial cable part is arranged in the inner water tube and is coaxial with the inner water tube, and the inner water tube part is arranged in the needle tube and is coaxial with the needle tube; the negative pressure device is respectively communicated with the water inlet sleeve and the water outlet sleeve; a first channel is formed in a gap between the microwave coaxial cable and the inner water pipe, a second channel is formed in a gap between the inner water pipe and the needle tube, and the first channel is communicated with the second channel; the water inlet sleeve is arranged on the peripheries of the microwave coaxial cable and the inner water pipe, a first cavity is formed among the water inlet sleeve, the microwave coaxial cable and the inner water pipe, the water outlet sleeve is arranged on the peripheries of the inner water pipe and the needle tube, and a second cavity is formed among the water outlet sleeve, the inner water pipe and the needle tube; an opening is arranged on the water outlet sleeve, and the sealing plug is matched with the opening; water flows back to the second chamber from the second chamber through the negative pressure device, the first chamber, the first channel and the second channel in sequence; the temperature sensor is arranged on the surface of the microwave coaxial cable and is in signal connection with the display screen; the current adjusting device is electrically connected with the microwave coaxial cable.
2. The temperature adjustable ablation needle of claim 1, wherein: the water inlet pipe is communicated with the first cavity, the water outlet pipe is communicated with the second cavity, the negative pressure device is respectively connected with the water inlet pipe and the water outlet pipe, and water sequentially flows through the water outlet pipe, the negative pressure device, the water inlet pipe, the first cavity, the first channel and the second channel from the second cavity to flow back to the second cavity.
3. The temperature adjustable ablation needle of claim 2, wherein: the negative pressure device is a negative pressure pump.
4. The temperature adjustable ablation needle of claim 1, wherein: the water inlet sleeve and the water outlet sleeve are both made of heat-conducting plastics.
5. The temperature adjustable ablation needle of claim 4, wherein: the sealing plug is made of rubber.
6. The temperature adjustable ablation needle of claim 1, wherein: the current regulating device is a rheostat.
7. The temperature adjustable ablation needle of claim 1, wherein: the temperature sensor is a thermocouple.
8. The temperature adjustable ablation needle of claim 1, wherein: the transition sleeve is made of transparent materials and is arranged on the periphery of the coaxial cable.
9. The temperature adjustable ablation needle of claim 1, wherein: the inner water pipe and the needle tube are both made of stainless steel.
10. The temperature adjustable ablation needle of claim 1, wherein: one end of the water inlet sleeve is hermetically connected with the microwave coaxial cable, and the other end of the water inlet sleeve is hermetically connected with the periphery of the inner water pipe; one end of the water outlet sleeve is hermetically connected with the needle tube, and the other end of the water outlet sleeve is hermetically connected with the water inlet sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010886073.0A CN111956323A (en) | 2020-08-28 | 2020-08-28 | Temperature-adjustable ablation needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010886073.0A CN111956323A (en) | 2020-08-28 | 2020-08-28 | Temperature-adjustable ablation needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111956323A true CN111956323A (en) | 2020-11-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010886073.0A Withdrawn CN111956323A (en) | 2020-08-28 | 2020-08-28 | Temperature-adjustable ablation needle |
Country Status (1)
| Country | Link |
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| CN (1) | CN111956323A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023123619A1 (en) * | 2021-12-31 | 2023-07-06 | 南京臻泰微波科技有限公司 | Combined low-impedance microwave ablation transmission assembly and impedance matching method therefor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5792140A (en) * | 1997-05-15 | 1998-08-11 | Irvine Biomedical, Inc. | Catheter having cooled multiple-needle electrode |
| CA2521267A1 (en) * | 2005-09-27 | 2007-03-27 | Sherwood Services Ag | Cooled rf ablation needle |
| CN103006321A (en) * | 2012-11-08 | 2013-04-03 | 南京维京九洲医疗器械研发中心 | Water-cooling microwave ablation needle-shaped antenna |
| CN103142307A (en) * | 2013-03-27 | 2013-06-12 | 杨兴瑞 | High-performance water-cooled microwave ablation antenna |
| CN104027168A (en) * | 2014-06-20 | 2014-09-10 | 章建全 | Microwave ablation needle antenna with infusion structure for curing cyst |
| CN105596079A (en) * | 2016-02-18 | 2016-05-25 | 赛诺微医疗科技(北京)有限公司 | Antenna component used for microwave ablation and microwave ablation needle adopting same |
| CN108938080A (en) * | 2018-07-26 | 2018-12-07 | 南京康友医疗科技有限公司 | Flexible microwave ablation needle under a kind of endoscopic ultrasonography |
-
2020
- 2020-08-28 CN CN202010886073.0A patent/CN111956323A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5792140A (en) * | 1997-05-15 | 1998-08-11 | Irvine Biomedical, Inc. | Catheter having cooled multiple-needle electrode |
| CA2521267A1 (en) * | 2005-09-27 | 2007-03-27 | Sherwood Services Ag | Cooled rf ablation needle |
| CN103006321A (en) * | 2012-11-08 | 2013-04-03 | 南京维京九洲医疗器械研发中心 | Water-cooling microwave ablation needle-shaped antenna |
| CN103142307A (en) * | 2013-03-27 | 2013-06-12 | 杨兴瑞 | High-performance water-cooled microwave ablation antenna |
| CN104027168A (en) * | 2014-06-20 | 2014-09-10 | 章建全 | Microwave ablation needle antenna with infusion structure for curing cyst |
| CN105596079A (en) * | 2016-02-18 | 2016-05-25 | 赛诺微医疗科技(北京)有限公司 | Antenna component used for microwave ablation and microwave ablation needle adopting same |
| CN108938080A (en) * | 2018-07-26 | 2018-12-07 | 南京康友医疗科技有限公司 | Flexible microwave ablation needle under a kind of endoscopic ultrasonography |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023123619A1 (en) * | 2021-12-31 | 2023-07-06 | 南京臻泰微波科技有限公司 | Combined low-impedance microwave ablation transmission assembly and impedance matching method therefor |
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Application publication date: 20201120 |
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