CN113081250A - Water-cooling microwave ablation needle with external water cavity - Google Patents
Water-cooling microwave ablation needle with external water cavity Download PDFInfo
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- CN113081250A CN113081250A CN202110305081.6A CN202110305081A CN113081250A CN 113081250 A CN113081250 A CN 113081250A CN 202110305081 A CN202110305081 A CN 202110305081A CN 113081250 A CN113081250 A CN 113081250A
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- 238000002679 ablation Methods 0.000 title claims abstract description 106
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 79
- 238000001816 cooling Methods 0.000 title claims abstract description 31
- 239000000498 cooling water Substances 0.000 claims abstract description 49
- 230000005855 radiation Effects 0.000 claims abstract description 34
- 230000035515 penetration Effects 0.000 claims abstract description 19
- 238000009529 body temperature measurement Methods 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims 1
- 210000001503 joint Anatomy 0.000 claims 1
- 229920000647 polyepoxide Polymers 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 11
- 239000010410 layer Substances 0.000 description 38
- 239000000463 material Substances 0.000 description 6
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 238000010146 3D printing Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 208000008839 Kidney Neoplasms Diseases 0.000 description 1
- 206010058467 Lung neoplasm malignant Diseases 0.000 description 1
- 206010038389 Renal cancer Diseases 0.000 description 1
- 238000010317 ablation therapy Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 201000010982 kidney cancer Diseases 0.000 description 1
- 201000007270 liver cancer Diseases 0.000 description 1
- 208000014018 liver neoplasm Diseases 0.000 description 1
- 201000005202 lung cancer Diseases 0.000 description 1
- 208000020816 lung neoplasm Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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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
Abstract
The invention discloses a water-cooling microwave ablation needle with an external water cavity, wherein one end of an ablation needle tube is connected with a microwave radiation puncture head, the other end of the ablation needle tube is inserted into a handle, the end part of the ablation needle tube in the handle is connected with a switching sleeve, one end of a coaxial cable penetrates through the switching sleeve to extend into the ablation needle tube and contact with the microwave radiation puncture head, the other end of the coaxial cable extends out of the switching sleeve to be connected with a radio frequency connector arranged in the handle, the ablation needle tube comprises an inner tube and an outer tube which are sleeved inside and outside, one end of the ablation needle tube close to the microwave radiation puncture head is communicated with the inner tube and the outer tube, and forms a loop, the external cooling water cavity is connected with an inner layer pipe penetration opening positioned on the adapter sleeve through a water inlet rubber pipe, and is communicated with the inner layer pipe, and a water outlet on the switching sleeve is connected with a drain pipe arranged on the outer wall of the handle through a water outlet rubber pipe. The invention adopts the double-layer tube ablation needle tube, has better cooling effect, smoother heat exchange process in the cooling water backflow process and quicker cooling.
Description
Technical Field
The invention relates to a microwave ablation needle, in particular to a water-cooling microwave ablation needle with an external water cavity.
Background
The microwave thermal ablation therapy is widely applied to clinical tumor treatment nowadays due to the advantages of minimal invasion, small toxic and side effects, wide adaptation and the like, and is particularly applied to common tumors such as liver cancer, lung cancer, kidney cancer and the like. The water cavity for storing cooling water in the microwave ablation needle clinically used at present is often arranged inside the ablation needle.
The traditional microwave ablation needle is characterized in that a capillary tube is inserted into an ablation needle tube to guide cooling water to flow into the front end of the needle body, the cooling water flows back in a pipeline to cool the rod wall of the ablation needle tube, the cooling water flows back into a built-in water cavity, the built-in water cavity cannot observe the flow rate and the water yield of the cooling water visually, and the cooling effect of the needle body cannot be evaluated visually. In addition, the cooling water of the traditional ablation needle flows in through the capillary tube to reach the front end of the needle tube to realize cooling, and the capillary tube is easy to bend and block in the manufacturing process, so that the cooling effect is not ideal.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a water-cooling microwave ablation needle with an external water cavity.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides an external type water-cooling microwave ablation needle in water cavity, includes microwave radiation puncture head 1, melts needle tubing 3, handle 4 and external cooling water cavity 5, the one end of melting needle tubing 3 is connected with microwave radiation puncture head 1, and the other end of melting needle tubing 3 inserts in handle 4, and the end connection of melting needle tubing 3 in handle 4 has adapter sleeve 8, and the one end of coaxial cable 7 is passed adapter sleeve 8 and is stretched into in melting needle tubing 3 and contact with microwave radiation puncture head 1, and the other end of coaxial cable 7 stretches out adapter sleeve 8 and arranges the radio frequency joint 9 in handle 4 and meet, it includes inner tube 302 and outer pipe 301 that is the setting of inside and outside suit to melt needle tubing 3, and melts the near microwave radiation puncture head 1's of needle tubing 3 one end, communicates with each other between inner tube 302 and the outer pipe 301 to form the return circuit, external cooling water cavity 5 is connected the inner tube penetration mouth that is located adapter sleeve 8 through income water hose 13, and is communicated with the inner layer pipe 302, and a water outlet 803 on the adapter sleeve 8 is connected with a water outlet pipe 6 arranged on the outer wall of the handle 4 through a water outlet rubber pipe 12.
Further, an insulating medium sleeve 2 is arranged at the joint of the ablation needle tube 3 and the microwave radiation puncture head 1. One end of the coaxial cable 7 is welded with the radio frequency connector 9, the other end of the coaxial cable 7 is stripped with a certain length of outer skin, a conductor inside the coaxial cable 7 is welded with the microwave radiation puncture head 1, and then an insulating medium sleeve 2 is sleeved on the connecting position.
Further, the ablation needle tube 3 is a double-layer stainless steel tube, and the coaxial cable 7 is accommodated between an outer layer tube 301 positioned at the outer part and an inner layer tube 302 positioned at the inner part.
Further, the inner diameter of the outer tube 301 is larger than the sum of the outer diameter of the inner tube 302 and the outer diameter of the coaxial cable 7, so as to leave a gap for the backflow of the cooling water.
Furthermore, cooling water flows in from the external cooling water cavity 5 to the inner pipe 302 through the water inlet rubber pipe 13 and the inner pipe penetration port 801 on the adapter sleeve 8, flows into the outer pipe 301 through one end of the ablation needle tube 3 close to the microwave radiation puncture head 1, and is discharged to the drain pipe 6 through the water outlet 803 on the adapter sleeve 8 and the water outlet rubber pipe 12. The cooling water flows in from the inner layer pipe 302, and flows back through the outer layer pipe 301 due to the separation of the insulating medium sleeve 2 at one end close to the microwave radiation puncture head 1, and simultaneously, the temperature of the coaxial cable 7 and the temperature of the outer wall of the ablation needle tube 3 are reduced in a heat exchange mode, so that the cooling effect is realized. The coaxial cable 7 is accommodated in the ablation needle tube 3, the inner diameter of the ablation needle tube 3 is properly larger than the outer diameter of the coaxial cable 7, a water cavity is formed in the hollow part of the ablation needle tube, water in the needle tube is automatically pushed to the adapter sleeve 8 under the pressure of the circulating water pump, and meanwhile heat is taken away by cooling water and the ablation needle tube 3 through heat exchange, so that the needle tube is cooled. The inner layer pipe 302 is externally connected with a water inlet rubber pipe 13, the water inlet rubber pipe 13 passes through an external circulating water pump, cooling water is pumped into the inner layer pipe 302 through the water pump and blocked by the insulating medium sleeve 2 at the front end, and the gap of the outer layer pipe 301 flows back.
Further, the external cooling water cavity 5 and the drain pipe 6 are arranged outside the handle 4 and used for observing the flow speed and flow rate of the returned cooling water and ensuring smooth circulation of the cooling water.
The water-cooling microwave ablation needle with the external water cavity further comprises a temperature sensor 10, wherein the temperature sensor 10 is arranged on the outer wall of the joint of the ablation needle tube 3 and the adapter sleeve 8; the temperature sensor 10 is connected with a display screen on the outer wall of the handle 4 through a temperature measurement connecting wire 11; the temperature sensor 10 is a 10k omega thermistor, and the temperature sensor 10 can effectively monitor the temperature of the outer wall of the ablation needle tube 3 in the ablation process and indirectly refer to the temperature of the microwave radiation puncture head 1.
Further, a cable penetration hole 802 is further formed in the adapter sleeve 8, and the coaxial cable 7 penetrates into the ablation needle tube 3 from the cable penetration hole 802.
Further, the inner pipe penetration hole 801 of the adapter sleeve 8 is butted with the inner pipe 302.
Further, the microwave radiation puncture head 1 has a needle head in any one of a conical shape, a triangular pyramid shape and an obtuse circle shape, and is made of copper.
Further, the material of insulating medium cover 2 is polytetrafluoroethylene, the material of drain pipe 6 is PVC, adapter sleeve 8 is epoxy to adopt 3D printing technique to make for the ablation needle tubing and the coaxial cable of encapsulation front end, the cooling water of control backward flow simultaneously flows into external water cavity.
Compared with the prior art, the invention has the following beneficial effects:
the double-layer ablation needle tube is adopted, the cooling effect is better than that of the traditional single-layer ablation needle tube in which a plurality of cooling capillary tubes are inserted, the heat exchange process in the cooling water backflow process is smoother, and the cooling is quicker; compared with the traditional built-in water cavity, the external cooling water cavity has the advantages that the flow speed and the water yield of the return cooling water can be visually observed and controlled; the temperature sensor adopts a thermistor and is attached to the joint of the ablation needle tube and the adapter sleeve, so that the rod temperature monitoring is more accurate.
Drawings
FIG. 1 is a schematic external view of the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a cross-sectional view of an ablation needle cannula of the present invention;
FIG. 4 is a cross-sectional view of an ablation needle cannula of the present invention;
FIG. 5 is a cross-sectional view of an adapter sleeve according to the present invention;
wherein: 1-microwave radiation puncture head, 2-insulating medium sleeve, 3-ablation needle tube, 301-outer layer tube, 302-inner layer tube, 4-handle, 5-external cooling water cavity, 6-drain tube, 7-coaxial cable, 8-adapter sleeve, 801-inner layer tube penetration port, 802-cable penetration port, 803-water outlet, 9-radio frequency connector, 10-temperature sensor, 11-temperature measurement connecting line, 12-water outlet rubber tube and 13-water inlet rubber tube.
Detailed Description
The present invention will be further described with reference to the following examples.
As shown in fig. 1-5, a water-cooling microwave ablation needle with an external water cavity comprises a microwave radiation puncture head 1, an ablation needle tube 3, a handle 4 and an external cooling water cavity 5, wherein one end of the ablation needle tube 3 is connected with the microwave radiation puncture head 1, the other end of the ablation needle tube 3 is inserted into the handle 4, the end of the ablation needle tube 3 in the handle 4 is connected with a switching sleeve 8, one end of a coaxial cable 7 penetrates through the switching sleeve 8 and extends into the ablation needle tube 3 and contacts with the microwave radiation puncture head 1, the other end of the coaxial cable 7 extends out of the switching sleeve 8 to be connected with a radio frequency connector 9 arranged in the handle 4, the ablation needle tube 3 comprises an inner tube 302 and an outer tube 301 which are sleeved inside and outside, one end of the ablation needle tube 3 close to the microwave radiation puncture head 1 is communicated with the inner tube 302 and the outer tube 301 to form a loop, the external cooling water cavity 5 is connected with an inner tube penetration port 801 arranged on the switching sleeve 8 through a water inlet hose 13, and is communicated with the inner layer pipe 302, and a water outlet 803 on the adapter sleeve 8 is connected with a water outlet pipe 6 arranged on the outer wall of the handle 4 through a water outlet rubber pipe 12.
And an insulating medium sleeve 2 is arranged at the joint of the ablation needle tube 3 and the microwave radiation puncture head 1. One end of the coaxial cable 7 is welded with the radio frequency connector 9, the other end of the coaxial cable 7 is stripped with a certain length of outer skin, a conductor inside the coaxial cable 7 is welded with the microwave radiation puncture head 1, and then an insulating medium sleeve 2 is sleeved on the connecting position.
The ablation needle tube 3 is a double-layer stainless steel tube, a coaxial cable 7 is accommodated between an outer layer tube 301 positioned outside and an inner layer tube 302 positioned inside, the outer diameter of the coaxial cable 7 is smaller than the gap between the outer layer tube 301 and the inner layer tube 302, and the inner diameter of the outer layer tube 301 is larger than the sum of the outer diameter of the inner layer tube 302 and the outer diameter of the coaxial cable 7, so that a gap for cooling water to flow back is reserved.
The specific flow direction of the cooling water in the invention is as follows: cooling water flows in from the external cooling water cavity 5 through the water inlet rubber tube 13 and the inner layer tube penetration port 801 on the adapter sleeve 8 to the inner layer tube 302, flows into the outer layer tube 301 through one end of the ablation needle tube 3 close to the microwave radiation puncture head 1, and is discharged through the water outlet 803 on the adapter sleeve 8, the water outlet rubber tube 12 to the water discharge tube 6. The cooling water flows in from the inner layer pipe 302, and flows back through the outer layer pipe 301 due to the separation of the insulating medium sleeve 2 at one end close to the microwave radiation puncture head 1, and simultaneously, the temperature of the coaxial cable 7 and the temperature of the outer wall of the ablation needle tube 3 are reduced in a heat exchange mode, so that the cooling effect is realized. The coaxial cable 7 is accommodated in the ablation needle tube 3, the inner diameter of the ablation needle tube 3 is properly larger than the outer diameter of the coaxial cable 7, a water cavity is formed in the hollow part of the ablation needle tube, water in the needle tube is automatically pushed to the adapter sleeve 8 under the pressure of the circulating water pump, and meanwhile heat is taken away by cooling water and the ablation needle tube 3 through heat exchange, so that the needle tube is cooled. The inner layer pipe 302 is externally connected with a water inlet rubber pipe 13, the water inlet rubber pipe 13 passes through an external circulating water pump, cooling water is pumped into the inner layer pipe 302 through the water pump and blocked by the insulating medium sleeve 2 at the front end, and the gap of the outer layer pipe 301 flows back. The external cooling water cavity 5 and the drain pipe 6 are arranged outside the handle 4 and used for observing the flow speed and flow of the returned cooling water and ensuring smooth circulation of the cooling water.
As a preferred scheme, a water-cooling microwave ablation needle with an external water cavity further comprises a temperature sensor 10, wherein the temperature sensor 10 is arranged on the outer wall of the joint of the ablation needle tube 3 and the adapter sleeve 8, and the temperature sensor 10 is connected with a display screen on the outer wall of the handle 4 through a temperature measurement connecting line 11. The temperature sensor 10 is a 10k omega thermistor, and the temperature sensor 10 can effectively monitor the temperature of the outer wall of the ablation needle tube 3 in the ablation process and indirectly refer to the temperature of the microwave radiation puncture head 1.
Specifically, the adapter sleeve 8 is further provided with a cable penetration hole 802, and the coaxial cable 7 penetrates into the ablation needle tube 3 from the cable penetration hole 802; the inner pipe penetration port 801 of the adapter sleeve 8 is butted with the inner pipe 302.
Preferably, the shape of the needle of the microwave radiation puncture head 1 is any one of a cone, a triangular pyramid and an obtuse circle, and the material is copper; the material of insulating medium cover 2 is polytetrafluoroethylene, the material of drain pipe 6 is PVC, adapter sleeve 8's material is epoxy to adopt 3D printing technique to make, be used for the ablation needle tubing and the coaxial cable of encapsulation front end, the cooling water inflow external water cavity of the simultaneous control backward flow.
Preferably, the handle 4 wraps the radio frequency connector 9 and the adapter sleeve 8, and the drain pipe 6 and the temperature measurement connecting wire 14 are fixed, so that sealing is realized, and the use is convenient.
The ablation needle of the invention firstly welds the microwave radiation puncture head with the coaxial cable inner conductor; then the insulating medium is sleeved on the coaxial cable and fixed at the microwave radiation puncture head for blocking cooling water and simultaneously is a gap for microwave radiation; the coaxial cable passes through the space between the outer layer tube and the inner layer tube of the ablation needle tube, and simultaneously the inner layer tube of the ablation needle tube is ensured to extend out of an inner layer tube penetration port 801 reserved on the adapter sleeve; then welding a radio frequency joint at the rear end of the coaxial cable; the temperature sensor is adhered to the joint of the ablation needle tube and the adapter sleeve; after assembly, the rear end of the ablation needle tube 3 is arranged in the handle 4 to realize sealing.
The double-layer ablation needle tube comprises a handle 4 and an ablation needle tube 3, the ablation needle tube 3 arranged on the wall of the double-layer tube has a good cooling effect and is simple to assemble, the defect that a capillary tube adopted by a traditional ablation needle is easy to bend and block is overcome, and the external cooling water cavity 5 has the advantages of flowing speed of return cooling water and visual observation and control of water yield compared with a traditional internal water cavity; the temperature sensor 10 adopts a thermistor and is attached to the joint of the ablation needle tube 3 and the adapter sleeve 8, so that the reference temperature of the ablation part can be indirectly monitored, and the rod temperature monitoring is more accurate.
Compared with the traditional mode that a plurality of cooling capillaries are inserted into a single-layer ablation needle tube, the mode that the ablation needle is cooled through the double-layer ablation needle tube can effectively avoid the problems that the inserted capillaries are easy to bend and block and the cooling effect is poor due to small water flow, and the double-layer ablation needle tube has larger inner-layer tube aperture, harder texture and no risk of bending and blocking. The heat exchange process of the cooling water backflow process is smoother, the cooling is quicker, and the cooling effect is better. Compared with the traditional built-in water cavity, the external water cavity has the advantages of flowing speed of the return cooling water, visual observation and control of water yield.
Compared with the traditional water cooling mode of inserting a capillary tube into the ablation needle tube, the water cooling mode of the ablation needle tube has the advantages that the risk of blockage of the water-cooled capillary tube due to bending of the needle rod is avoided, cooling water circulation is more stable, contact with the rod wall of the ablation needle tube is better, and better cooling effect can be realized; in addition, the cooling water is directly externally connected with the external cooling water cavity 5 through the adapter sleeve, so that the water cooling conditions including flow velocity, water yield and the like in the ablation process can be visually observed, and the safety and stability of microwave ablation are ensured; the temperature sensor is arranged at the joint of the coaxial cable and the adapter sleeve, so that the temperature of the needle rod (the ablation needle tube 3) in the ablation process can be effectively monitored, and the skin of a patient is prevented from being burnt due to overhigh temperature.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (10)
1. The utility model provides an external type water-cooling microwave ablation needle in water chamber which characterized in that: comprises a microwave radiation puncture head (1), an ablation needle tube (3), a handle (4) and an external cooling water cavity (5), one end of the ablation needle tube (3) is connected with the microwave radiation puncture head (1), the other end of the ablation needle tube (3) is inserted into the handle (4), the end part of the ablation needle tube (3) in the handle (4) is connected with a switching sleeve (8), one end of a coaxial cable (7) penetrates through the switching sleeve (8) to extend into the ablation needle tube (3) and contact with the microwave radiation puncture head (1), the other end of the coaxial cable (7) extends out of the switching sleeve (8) and is connected with a radio frequency connector (9) arranged in the handle (4), the ablation needle tube (3) comprises an inner layer tube (302) and an outer layer tube (301) which are arranged in an inner and outer sleeving manner, one end of the ablation needle tube (3) close to the microwave radiation puncture head (1), and the inner layer tube (302) and the outer layer tube (301) are communicated, and a loop is formed, the external cooling water cavity (5) is connected with an inner layer pipe penetration opening (801) on the adapter sleeve (8) through a water inlet rubber pipe (13) and is communicated with the inner layer pipe (302), and a water outlet (803) on the adapter sleeve (8) is connected with a water outlet pipe (6) arranged on the outer wall of the handle (4) through a water outlet rubber pipe (12).
2. The water-cooled microwave ablation needle with the external water cavity is characterized in that an insulating medium sleeve (2) is arranged at the joint of the ablation needle tube (3) and the microwave radiation puncture head (1).
3. The water-cooled microwave ablation needle with the external water cavity as claimed in claim 1, wherein the ablation needle tube (3) is a double-layer stainless steel tube, and a coaxial cable (7) is accommodated between an outer-layer tube (301) located at the outer part and an inner-layer tube (302) located at the inner part.
4. The water-cooled microwave ablation needle with the external water cavity as claimed in claim 3, wherein the inner diameter of the outer layer tube (301) is larger than the sum of the outer diameter of the inner layer tube (302) and the outer diameter of the coaxial cable (7).
5. The water-cooling microwave ablation needle with the external water cavity as claimed in claim 3, wherein cooling water flows in from the external cooling water cavity (5) to the inner pipe (302) through the water inlet hose (13) and the inner pipe penetration opening (801) on the adapter sleeve (8), flows into the outer pipe (301) through one end of the ablation needle tube (3) close to the microwave radiation puncture head (1), and is discharged to the drain pipe (6) through the water outlet (803) and the water outlet hose (12) on the adapter sleeve (8).
6. The water-cooled microwave ablation needle with the external water cavity is characterized by further comprising a temperature sensor (10), wherein the temperature sensor (10) is arranged on the outer wall of the joint of the ablation needle tube (3) and the adapter sleeve (8), the temperature sensor (10) is connected with a display screen on the outer wall of the handle (4) through a temperature measurement connecting line (11), and the temperature sensor (10) is a thermistor.
7. The water-cooled microwave ablation needle with the external water cavity as claimed in claim 1, wherein the adapter sleeve (8) is further provided with a cable penetration hole (802), and the coaxial cable (7) penetrates into the ablation needle tube (3) from the cable penetration hole (802).
8. The water-cooled microwave ablation needle with the external water cavity as claimed in claim 1, wherein the inner tube penetration port (801) on the adapter sleeve (8) is in butt joint with the inner tube (302).
9. The water-cooled microwave ablation needle with the external water cavity according to claim 1, wherein the needle head of the microwave radiation puncture head (1) is in any one shape of a cone, a triangular pyramid and an obtuse circle and is made of copper.
10. The external water-cooling microwave ablation needle in the water cavity as claimed in claim 1, wherein the insulating medium sleeve (2) is made of polytetrafluoroethylene, the drain pipe (6) is made of PVC, and the adapter sleeve (8) is made of epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110305081.6A CN113081250A (en) | 2021-03-18 | 2021-03-18 | Water-cooling microwave ablation needle with external water cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110305081.6A CN113081250A (en) | 2021-03-18 | 2021-03-18 | Water-cooling microwave ablation needle with external water cavity |
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| Publication Number | Publication Date |
|---|---|
| CN113081250A true CN113081250A (en) | 2021-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110305081.6A Pending CN113081250A (en) | 2021-03-18 | 2021-03-18 | Water-cooling microwave ablation needle with external water cavity |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116058960A (en) * | 2022-12-28 | 2023-05-05 | 南京瑞波医学科技有限公司 | Microwave antenna |
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| WO2006084676A1 (en) * | 2005-02-11 | 2006-08-17 | H.S. - Hospital Service - S.P.A. | Microwave device for the ablation of tissues |
| US20110118723A1 (en) * | 2009-11-17 | 2011-05-19 | Bsd Medical Corporation | Microwave coagulation applicator and system |
| US20170265941A1 (en) * | 2009-05-27 | 2017-09-21 | Covidien Lp | Narrow gauge high strength choked wet tip microwave ablation antenna |
| CN108030548A (en) * | 2017-12-13 | 2018-05-15 | 南京康友医疗科技有限公司 | A kind of soft bar ablation needle of the microwave of reusable edible |
| CN111134839A (en) * | 2020-01-16 | 2020-05-12 | 南京康友医疗科技有限公司 | Ablation needle tube, microwave ablation needle and microwave ablation therapeutic apparatus |
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2021
- 2021-03-18 CN CN202110305081.6A patent/CN113081250A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006084676A1 (en) * | 2005-02-11 | 2006-08-17 | H.S. - Hospital Service - S.P.A. | Microwave device for the ablation of tissues |
| US20170265941A1 (en) * | 2009-05-27 | 2017-09-21 | Covidien Lp | Narrow gauge high strength choked wet tip microwave ablation antenna |
| US20110118723A1 (en) * | 2009-11-17 | 2011-05-19 | Bsd Medical Corporation | Microwave coagulation applicator and system |
| CN108030548A (en) * | 2017-12-13 | 2018-05-15 | 南京康友医疗科技有限公司 | A kind of soft bar ablation needle of the microwave of reusable edible |
| CN111134839A (en) * | 2020-01-16 | 2020-05-12 | 南京康友医疗科技有限公司 | Ablation needle tube, microwave ablation needle and microwave ablation therapeutic apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116058960A (en) * | 2022-12-28 | 2023-05-05 | 南京瑞波医学科技有限公司 | Microwave antenna |
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Application publication date: 20210709 |