CN108175498B - Cooling device of microwave ablation needle - Google Patents
Cooling device of microwave ablation needle Download PDFInfo
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- CN108175498B CN108175498B CN201810095297.2A CN201810095297A CN108175498B CN 108175498 B CN108175498 B CN 108175498B CN 201810095297 A CN201810095297 A CN 201810095297A CN 108175498 B CN108175498 B CN 108175498B
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- 238000001816 cooling Methods 0.000 title claims abstract description 30
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- 238000007789 sealing Methods 0.000 claims description 22
- 239000004065 semiconductor Substances 0.000 claims description 13
- 239000000498 cooling water Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 17
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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
- A61B2018/00029—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids open
-
- 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
-
- 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
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Otolaryngology (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
Abstract
The invention discloses a cooling device of a microwave ablation needle, which comprises a needle head, a first needle bar, a second needle bar, a water inlet pipe and a water outlet pipe, wherein the first needle bar is sleeved in the second needle bar, the water inlet pipe and the water outlet pipe are both in spiral connection in a cavity between the first needle bar and the second needle bar, a heat conducting layer is arranged in the cavity, the tail end of the water inlet pipe is communicated with the tail end of the water outlet pipe, the water outlet pipe and the water inlet pipe are communicated with an external water pipe, the needle head is connected with the second needle bar, a microwave emitter is arranged, the microwave emitter is connected with a microwave emission control module through a connecting wire, and the microwave emission control module is connected with a controller. The cooling effect is good, and the carbonization caused by the overhigh temperature of the tissue around the ablation needle is effectively avoided.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a cooling device of a microwave ablation needle.
Background
With the rapid development of high and new technologies, tumor targeted therapy (minimally invasive interventional therapy) has become one of the most rapidly developed tumor therapeutic approaches in recent years. It integrates modern medical imaging technology, drug therapy, biology, gene technology and the like, and represents the latest development direction of tumor therapy in the 21 st century. The advantage of low incidence rate of tumor complications and side effects of the cold circulation microwave ablation needle is called the safest and efficient minimally invasive tumor treatment method at present.
The ablation needle is not a needle, and is a very thin radiofrequency energy output electrode. The specific method comprises the following steps: under the guidance of B ultrasonic or CT, the ablation needle is directly penetrated into the tumor part, polar molecules in the tissue move at high speed under the action of radio frequency field, heat is generated by mutual friction, the temperature in the tumor is quickly increased, and when the temperature is increased to about 60 ℃, cancer cell proteins are denatured and coagulated, so that irreversible necrosis is caused. Meanwhile, the effect on other tissues is very small, the immunity of the organism of a patient is improved, and the diffusion of tumor cells is inhibited. The ablation needle has the advantages of quick heating, strong tissue penetrability, simultaneous multi-point ablation, large ablation range, real-time temperature monitoring, definite curative effect and the like, and is widely used for treating liver cancer, lung cancer, hysteromyoma, bone cancer, renal cancer, pancreatic cancer, thyroid tumor, spleen hyperthyroidism and the like.
The existing ablation needle is not ideal in temperature control effect at a working position, so that the temperature of the ablation needle is fast, the temperature is not easy to control, carbonization of tissues around a needle rod and a needle head occurs, surrounding organs can be damaged, carbonized tissues are easy to remain in the body, and the generated reaction has slight burning sensation in operation, low heat after operation, foreign body sensation and the like.
Disclosure of Invention
Aiming at the prior art, the technical problem to be solved by the invention is to provide the cooling device for the microwave ablation needle, which has good cooling effect and effectively avoids carbonization caused by overhigh temperature of tissue around the ablation needle.
The utility model provides a cooling device of microwave ablation needle, includes syringe needle, first needle bar, second needle bar, inlet tube and outlet pipe, first needle bar cover is in the second needle bar, equal screwed connection of inlet tube and outlet pipe is in the cavity between first needle bar and the second needle bar, be equipped with the heat-conducting layer in the cavity, the inlet tube end communicates with the outlet pipe end, outlet pipe and inlet tube and external water pipe intercommunication, the syringe needle is connected with the second needle bar and is equipped with microwave emitter, microwave emitter passes through the connecting wire and is connected with microwave emission control module, microwave emission control module is connected with the controller.
Further, still include the handle, first needle bar and second needle bar are that one end is connected with the handle, the syringe needle is connected to the other end, be equipped with coolant tank in the handle, the inlet tube is connected with coolant tank, coolant tank with the outlet pipe respectively with external water piping connection, be equipped with in the first needle bar the connecting wire.
Further, the water inlet end of the water inlet pipe is provided with a first temperature sensor, the water outlet end of the water outlet pipe is provided with a second temperature sensor, the first temperature sensor and the second temperature sensor are respectively connected with the controller, and the controller is connected with the display device.
Further, the first needle bar and the second needle bar are respectively detachably connected with the handle, the connecting wire is connected with a socket and an interface, the socket is respectively arranged in the first needle bar and the second needle bar, the interface is arranged on the handle, and the water inlet pipe and the water outlet pipe are connected with a cold water tank in the handle through the connector.
Further, the connector comprises sockets respectively arranged on the water inlet pipe and the water outlet pipe and a socket arranged in the handle, the sockets are inserted into the socket, and the sockets are in interference fit with the socket.
Further, be equipped with the thermal expansion layer on the socket, the thermal expansion layer for annular inlay mutually with the outer wall of socket, the thermal expansion layer is made by the rubber material and inside is equipped with a plurality of confined air chambers, the air intracavity is filled with gas.
Further, the end face of the socket is provided with a permanent magnet, the bottom of the socket is provided with an electromagnet, and the electromagnet is connected with the controller.
Further, the outer wall of the socket is provided with a semiconductor refrigerating sheet, the cold end of the semiconductor refrigerating sheet is contacted with the outer wall of the socket, the hot end of the semiconductor refrigerating sheet is contacted with the thermal expansion layer, and the semiconductor refrigerating sheet is connected with the controller.
Further, the tail end of the needle bar is provided with a condensation pipe, the condensation pipe is embedded in the joint between the water inlet pipe and the water outlet pipe, the condensation pipe is sequentially connected with a leakage-proof joint, a circulating pump and a condenser through pipelines, and refrigerating fluid is filled in the condensation pipe.
Further, the leak-proof joint comprises a leak-proof socket and a leak-proof bell mouth, the leak-proof socket is inserted into the leak-proof bell mouth, the leak-proof socket and the leak-proof bell mouth are both provided with a sealing ring and a T-shaped sealing cover, a through hole is arranged in the middle of the sealing ring, the T-shaped sealing cover is used for sealing the through hole, and an elastic element for tightly pressing the T-shaped sealing cover on the through hole is arranged on the sealing ring.
The invention has the beneficial effects that:
high heat efficiency and low pain sensation by microwave ablation. If the tumor is beside a blood vessel, the blood flow will dissipate heat very quickly, i.e. "heat sink effect". The microwave rises fast and the heat forming effect is good. The microwave ablation range is relatively large, and is suitable for China with a plurality of large tumors. The electric current is not generated by using the anode and the cathode, so that the influence on electrophysiology is avoided, and the skin injury is reduced. The water inlet pipe and the water outlet pipe are spirally wound on the needle bar, so that the contact area of cold water and human tissues is increased, the heat dissipation of the human tissues is effectively promoted, the charring of the human tissues caused by overhigh temperature is prevented, and the adhesion of the needle bar and the human tissues is avoided. Because the water inlet pipe and the water outlet pipe are spiral, the water inlet pipe and the water outlet pipe can be fixed on the first needle bar, the fixing effect of the water inlet pipe and the water outlet pipe is improved, and the loosening phenomenon of the water inlet pipe and the water outlet pipe caused by the reasons of transportation vibration and the like is avoided. Because the existence of second needle bar for the ablation needle surface is smooth, the human tissue of penetration of being convenient for, smooth ablation needle surface also is difficult for adhesion tissue, prevents that the tissue after the ablation from being glued out, and the tissue of gluing out drops easily when extracting the ablation needle, causes the difficult healing of wound and has foreign matter sense after healing. The heat conducting layer is arranged in the cavity, so that the exchange between the water inlet pipe and the water outlet pipe and the outside is improved, the cooling effect on the ablation needle is improved by the heat conducting layer, and the phenomenon of charring of tissues caused by overhigh temperature in the ablation process is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only preferred embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view showing a partial cross-sectional structure of a cooling device for a microwave ablation needle according to embodiment 1 of the present invention;
FIG. 2 is an enlarged view of area A of FIG. 1;
FIG. 3 is a schematic view of a cooling device for a microwave ablation needle according to embodiment 1 of the present invention;
FIG. 4 is a schematic view showing a partial cross-sectional structure of a cooling device for a microwave ablation needle according to embodiment 2 of the present invention;
FIG. 5 is an enlarged view of the structure of area B of FIG. 4;
FIG. 6 is a schematic view showing a partial cross-sectional structure of a thermal expansion layer according to embodiment 2 of the present invention;
FIG. 7 is a schematic view of a cooling device for a microwave ablation needle according to embodiment 2 of the invention;
FIG. 8 is a schematic cross-sectional view of a cooling device for a microwave ablation needle according to embodiment 3 of the invention;
FIG. 9 is a schematic cross-sectional view showing a state in which the leak-proof joint of embodiment 3 of the present invention is not connected;
FIG. 10 is a schematic sectional view showing the connection state of the leak-proof joint according to embodiment 3 of the present invention;
in the figure, 1 needle head, 2 first needle bar, 3 second needle bar, 4 inlet tube, 5 outlet tube, 6 heat conducting layer, 7 handle, 8 cooling water tank, 9 connecting wire, 10 microwave emitter, 11 microwave emission control module, 12 controller, 13 first temperature sensor, 14 second temperature sensor, 15 display device, 16 socket, 17 interface, 18 connector, 19 socket, 20 bellmouth, 21 thermal expansion layer, 22 air cavity, 23 permanent magnet, 24 electromagnet, 25 semiconductor refrigerating sheet, 26 condenser tube, 27 leak-proof connector, 28 leak-proof socket, 29 leak-proof bellmouth, 30 sealing ring, 31T type sealing cover, 32 through hole, 33 elastic element.
Detailed Description
For a better understanding of the technical content of the present invention, specific examples are provided below and the present invention is further described with reference to the accompanying drawings.
Example 1
Referring to fig. 1 to 3, the cooling device for a microwave ablation needle provided by the invention comprises a needle head 1, a first needle bar 2, a second needle bar 3, a water inlet pipe 4, a water outlet pipe 5 and a handle 7, wherein the first needle bar 2 is sleeved in the second needle bar 3, one end of the first needle bar 2 and one end of the second needle bar 3 are connected with the handle 7, the other end of the first needle bar is connected with the needle head 1, the water inlet pipe 4 and the water outlet pipe 5 are spirally connected in a cavity between the first needle bar 2 and the second needle bar 3, the water inlet pipe 4 and the water outlet pipe 5 are spirally provided, the heat exchange area of the water inlet pipe 4 and the water outlet pipe 5 due to the outside is increased, the cooling effect is improved, and the cooling is uniform. Because of the existence of the second needle bar 3, the outer surface of the ablation needle is smooth, human tissues are convenient to penetrate, the smooth outer surface of the ablation needle is not easy to adhere to the tissues, the ablated tissues are prevented from being adhered out, the adhered tissues are easy to fall off when the ablation needle is pulled out, and the wound is not easy to heal and has foreign body sensation after healing. The heat conducting layer 6 is arranged in the cavity, so that the exchange between the water inlet pipe 4 and the water outlet pipe 5 and the outside is improved, the cooling effect of the heat conducting layer 6 on the ablation needle is improved, and the phenomenon of charring of tissues caused by overhigh temperature in the ablation process is avoided. The end of the water inlet pipe 4 is communicated with the end of the water outlet pipe 5 to form a circulating system, cold water flows out of the water outlet pipe 5 after entering the end of the water inlet pipe 4, a cooling water tank 8 is arranged in the handle 7, the water inlet pipe 4 is connected with the cooling water tank 8, the cooling water tank 8 and the water outlet pipe 5 are connected with an external water pipe, the cooling water tank 8 caches the cold water to play a role in buffering water pressure, a connecting wire 9 is arranged in the first needle bar 2, a microwave emitter 10 is arranged in the needle 1, the microwave emitter 10 is connected with a microwave emission control module 11 through the connecting wire 9, and the microwave emission control module 11 is connected with a controller 12.
Further, the water inlet end of the water inlet pipe 4 is provided with a first temperature sensor 14, the first temperature sensor 14 detects the temperature of the inlet water and transmits the detected signal to the controller 12, the water outlet end of the water outlet pipe 5 is provided with a second temperature sensor 14, the second temperature sensor 14 is used for detecting the temperature of the water and transmitting the detected signal to the controller 12, the first temperature sensor 14 and the second temperature sensor 14 are respectively connected with the controller 12, the controller 12 calculates the heat quantity absorbed by the cold water according to the temperature of the inlet water and the temperature of the outlet water, the controller 12 is connected with the display device 15, and the water flow rate to be controlled is displayed on the display device 15. Further, be equipped with the water pump in the coolant tank 8, the water pump pumps water to inlet tube 4, and the water pump is connected with controller 12, and controller 12 adjusts the power of water pump according to the cooling effect, and accurate control cooling effect avoids in the operation process traditional chinese medicine life-size needs the distraction to adjust the cooling effect.
Example 2
Referring to fig. 4 to 7, the difference between this embodiment and embodiment 1 is that the first needle bar 2 and the second needle bar 3 are detachably connected with the handle 7, so that the needle bar can be replaced conveniently, and the needle bar is removed after being used, and the handle 7 and the handle are reused, thereby avoiding waste. The needle bar can be reused after being taken down, the needle bar is disassembled during the disinfection, and only the needle bar and the needle head 1 connected to the needle bar are disinfected, so that the damage of components in the handle 7 in the disinfection process is avoided. The connecting wire 9 is connected with a socket 16 and an interface 17, the connecting wire 9 is connected after the needle bar is tightly inserted, and the microwave control module can control the microwave generator to work through the connecting wire 9. The socket 19 is respectively arranged in the first needle bar 2 and the second needle bar 3, the interface 17 is arranged on the handle 7, and the water inlet pipe 4 and the water outlet pipe 5 are connected with a cold water tank in the handle 7 through a connector 18.
Specifically, connector 18 includes locating inlet tube 4 and outlet pipe 5's socket 19 respectively, locates the bellmouth 20 in handle 7, socket 19 inserts in bellmouth 20, socket 19 with bellmouth 20 interference fit inserts handle 7 back with the needle bar, socket 19 and bellmouth 20 closely cooperate, and further, socket 19 and bellmouth 20 all have certain tapering, and in the socket 20 of being convenient for 19 inserts, further, socket 19 length is 5 ~ 15cm, the degree of depth of bellmouth 20 is 5 ~ 15cm, guarantees that socket 19 can firm grafting in bellmouth 20, avoids the needle bar to appear rocking the phenomenon.
Specifically, be equipped with the thermal expansion layer 21 on the socket 19, thermal expansion layer 21 for annular inlay mutually with the outer wall of socket 19, thermal expansion layer 21 is heated the back inflation, because the temperature after cooling the tissue can rise, therefore the temperature that rises heats thermal expansion layer 21, and thermal expansion layer 21 after heating expands, connects socket 19 and bellmouth 20 closely, avoids cold water to leak, improves needle bar and handle 7's connection fastness, thermal expansion layer 21 is made by the rubber material and inside is equipped with a plurality of confined air chambers 22, be filled with gas in the air chamber 22, not only improve thermal expansion layer 21's elasticity, be convenient for install, be difficult for damaging after many times installation and dismantlement. Meanwhile, the thermal expansion coefficient of the thermal expansion layer 21 is improved by the plurality of closed air cavities 22, and the heated thermal expansion layer 21 expands in volume, so that sealing is more easy to be firm. The thermal expansion layer 21 is arranged on the socket 19 so as to be convenient to replace and install, when the thermal expansion layer 21 is damaged, the needle bar can be taken down from the handle 7, and the thermal expansion layer 21 can be easily taken down by clamping the thermal expansion layer 21 with the iron pliers.
Specifically, the end face of the socket 19 is provided with a permanent magnet 23, the bottom of the socket 20 is provided with an electromagnet 24, and the electromagnet 24 is connected with the controller 12. After the socket 19 is inserted into the bell 20, the controller 12 controls the electromagnet 24 to be electrified, the electromagnet 24 generates magnetism which attracts the permanent magnet 23 mutually, and the socket 19 is tightly attracted into the bell 20 to prevent falling. When the needle bar needs to be detached, the controller 12 controls the electromagnet 24 to generate magnetism which attracts the permanent magnet 23 mutually, so that the needle bar is taken out conveniently.
Specifically, the outer wall of socket 19 is equipped with semiconductor refrigeration piece 25, and semiconductor refrigeration piece 25 can be with the heat transmission of cold junction to the hot junction, the outer wall contact of semiconductor refrigeration piece 25 and socket 19, hot junction and heat expansion layer 21 contact, with the heat transmission of socket 19 to heat expansion layer 21, can enough reduce the temperature of socket 19 department water and can also heat expansion layer 21 simultaneously, reaches the dual efficiency that improves cooling effect and sealed effect simultaneously, semiconductor refrigeration piece 25 is connected with controller 12.
Example 3
Referring to fig. 8 to 10, the difference between this embodiment and embodiments 1 and 2 is that the end of the needle rod is provided with a condensation pipe 26, the condensation pipe 26 is embedded at the connection between the water inlet pipe 4 and the water outlet pipe 5, the condensation pipe 26 is sequentially connected with a leakage-proof joint 27, a circulating pump and a condenser through pipelines, and the condensation pipe 26 is filled with a refrigerant liquid. The condenser reduces the temperature of the refrigerant liquid, the refrigerant liquid with low temperature circulates among the condenser tube 26, the condenser and the pipeline through the action of the circulating pump, and the temperature of the position close to the needle head 1 is the highest in the ablation process, so that the temperature is easy to be overhigh at the position, and the tissue carbonization usually occurs at the position. The charring of the tissue occurs after improper operation, in order to avoid charring tissue remaining in the body, the temperature is reduced through the condenser tube 26 after ablation is finished, so that the tissue at the tail end of the needle head 1 and the needle bar is reduced to a freezing point, the charred part is tightly bonded with the needle head 1 and the needle bar, the charred part is cooled most easily, the charred part is tightly bonded with the needle bar by reducing the temperature, the charred tissue remaining in the body when the needle bar is prevented from being taken out, the remaining charred tissue is not easy to be absorbed by the human body, and foreign body sensation is easy to generate. The provision of the condenser tube 26 at the distal end of the needle shaft is advantageous in avoiding other non-charred tissue from sticking to the needle shaft after the temperature is reduced.
Specifically, the leak-proof joint 27 comprises a leak-proof socket 28 and a leak-proof bell 29, the leak-proof socket 28 is inserted into the leak-proof bell 29, the leak-proof socket 28 and the leak-proof bell 29 are both provided with a sealing ring 30 and a T-shaped sealing cover 31, a through hole 32 is arranged in the middle of the sealing ring 30, the T-shaped sealing cover 31 is used for sealing the through hole 32, and an elastic element 33 for pressing the T-shaped sealing cover 31 onto the through hole 32 is arranged on the sealing ring 30. After the socket 19 is tightly inserted, the leakage-proof socket 28 is communicated with the leakage-proof bell 29, the T-shaped sealing cover 31 positioned on the leakage-proof socket 28 and the T-shaped sealing cover 31 positioned on the leakage-proof bell 29 are mutually abutted after the socket is tightly inserted, the through hole 32 of the sealing ring 30 is opened, and the refrigerating fluid can circulate. When the leakage preventing spigot 28 is separated from the leakage preventing socket 29, the T-shaped sealing cover 31 seals the through hole 32 under the action of the elastic member 33, preventing leakage of the refrigerant liquid.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (7)
1. The utility model provides a cooling device of microwave ablation needle, its characterized in that includes syringe needle, first needle bar, second needle bar, inlet tube and outlet pipe, first needle bar cover is in the second needle bar, equal screwed connection of inlet tube and outlet pipe is in the cavity between first needle bar and the second needle bar, be equipped with the heat-conducting layer in the cavity, inlet tube end and outlet pipe end intercommunication, outlet tube and inlet tube and external water pipe intercommunication, the syringe needle is connected with the second needle bar and is equipped with microwave emitter, microwave emitter passes through the connecting wire and is connected with microwave emission control module, microwave emission control module is connected with the controller, first needle bar, second needle bar can dismantle with the handle respectively and be connected, the connecting wire is connected with socket and interface, the socket is located respectively in first needle bar and the second needle bar, the interface on the handle, the inlet tube with the outlet pipe passes through the connector with cold water tank in the handle is connected, the needle bar end is equipped with the condenser pipe, the condenser pipe inlay in between inlet tube and the connection just be equipped with the microwave emitter, the microwave emitter passes through the connecting wire and is connected with the leak protection seal, the sealing washer T is equipped with leak protection seal bellmouth in proper order with leak protection seal, seal joint T.
2. The cooling device of the microwave ablation needle according to claim 1, further comprising a handle, wherein one end of the first needle bar and one end of the second needle bar are connected with the handle, the other end of the first needle bar is connected with the needle head, a cooling water tank is arranged in the handle, the water inlet pipe is connected with the cooling water tank, the cooling water tank and the water outlet pipe are respectively connected with an external water pipe, and the connecting wire is arranged in the first needle bar.
3. The cooling device of the microwave ablation needle according to claim 1, wherein a first temperature sensor is arranged at the water inlet end of the water inlet pipe, a second temperature sensor is arranged at the water outlet end of the water outlet pipe, the first temperature sensor and the second temperature sensor are respectively connected with the controller, and the controller is connected with the display device.
4. The cooling device of a microwave ablation needle according to claim 1, wherein the connector includes sockets provided in the water inlet pipe and the water outlet pipe, respectively, and a socket provided in the handle, the sockets being inserted into the socket, the sockets being in interference fit with the socket.
5. The cooling device of the microwave ablation needle according to claim 4, wherein the socket is provided with a thermal expansion layer, the thermal expansion layer is annular and embedded with the outer wall of the socket, the thermal expansion layer is made of rubber materials and is internally provided with a plurality of closed air cavities, and the air cavities are filled with air.
6. The cooling device of a microwave ablation needle according to claim 4, wherein the end face of the socket is provided with a permanent magnet, the bottom of the socket is provided with an electromagnet, and the electromagnet is connected with a controller.
7. The cooling device of the microwave ablation needle according to claim 5, wherein a semiconductor refrigerating sheet is arranged on the outer wall of the socket, the cold end of the semiconductor refrigerating sheet is in contact with the outer wall of the socket, the hot end of the semiconductor refrigerating sheet is in contact with the thermal expansion layer, and the semiconductor refrigerating sheet is connected with the controller.
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| CN109464191A (en) * | 2018-11-23 | 2019-03-15 | 山东大学 | It is a kind of to integrate the microwave melt needle repaired in art with cooling |
| CN109602490A (en) * | 2018-11-27 | 2019-04-12 | 南京维京九洲医疗器械研发中心 | A kind of microwave ablation electrode under bronchoscope |
| CN110292437B (en) * | 2019-06-18 | 2020-05-12 | 海南省妇幼保健院 | Targeted ablation needle control system |
| CN110623726B (en) * | 2019-10-22 | 2021-08-31 | 张彩虹 | Radio frequency plasma knife electrode vaporization, heat congeals, cutting operation anti-inflammatory device |
| CN212879547U (en) * | 2020-05-27 | 2021-04-06 | 天津美电医疗科技有限公司 | Electric cold ablation system using flexible electric cold probe and flexible electric cold probe |
| CN111839723B (en) * | 2020-08-19 | 2021-03-02 | 江苏普力优创科技有限公司 | Intelligent disposable microwave ablation needle and matching method thereof |
| CN115590611B (en) * | 2022-12-13 | 2023-04-07 | 成都德倍佳医疗科技有限责任公司 | Water outlet electric coagulation forceps |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2102407U (en) * | 1991-10-17 | 1992-04-22 | 胡国清 | Moveable seal cartridge |
| JPH08210567A (en) * | 1994-11-28 | 1996-08-20 | Hitachi Metals Ltd | Pipe joint |
| JPH09144962A (en) * | 1995-11-27 | 1997-06-03 | Suiken Technol:Kk | Seal structure of fluid pipe |
| CN2426938Y (en) * | 2000-05-21 | 2001-04-18 | 宁波金帆管件有限公司 | Improved inserting pipe joint |
| CN2628832Y (en) * | 2003-07-04 | 2004-07-28 | 宁波金帆管件有限公司 | Valve with lock |
| JP2005249007A (en) * | 2004-03-02 | 2005-09-15 | Rix Corp | Rotary joint |
| CN201359166Y (en) * | 2009-03-11 | 2009-12-09 | 辽宁华鑫市政建设工程有限公司 | T type packing washer |
| JP2010007790A (en) * | 2008-06-27 | 2010-01-14 | Daihen Corp | Power transmitting mechanism |
| JP2010142363A (en) * | 2008-12-17 | 2010-07-01 | Nipro Corp | Medical valve |
| CN201982865U (en) * | 2011-04-19 | 2011-09-21 | 上海久通塑胶制品有限公司 | Socket type plastic pipe connecting flange sealing ring |
| CN104023493A (en) * | 2014-06-19 | 2014-09-03 | 哈尔滨工业大学（威海） | Waterproof sealing device for underwater electrical equipment wire via hole |
| CN105662579A (en) * | 2016-03-08 | 2016-06-15 | 四川航天世都制导有限公司 | Novel laser treatment handle |
| CN205698100U (en) * | 2016-04-11 | 2016-11-23 | 佛山市爱斯伽罗激光科技有限公司 | A kind of output optical fibre mounting structure of dental hand-held laser |
| CN206630670U (en) * | 2016-12-26 | 2017-11-14 | 翟月 | A kind of ablation needle with microwave and chemical ablation function |
| CN208892768U (en) * | 2018-01-31 | 2019-05-24 | 海口市人民医院（中南大学湘雅医学院附属海口医院） | Cooling device of microwave ablation needle |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITBS20020039U1 (en) * | 2002-03-20 | 2003-09-22 | Fogazzi Di Venturelli Andrea & | CATHETER WITH FLEXIBLE COOLED ELECTRODE |
| EP1584127A1 (en) * | 2003-01-07 | 2005-10-12 | Philips Intellectual Property & Standards GmbH | High-voltage connector |
-
2018
- 2018-01-31 CN CN201810095297.2A patent/CN108175498B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2102407U (en) * | 1991-10-17 | 1992-04-22 | 胡国清 | Moveable seal cartridge |
| JPH08210567A (en) * | 1994-11-28 | 1996-08-20 | Hitachi Metals Ltd | Pipe joint |
| JPH09144962A (en) * | 1995-11-27 | 1997-06-03 | Suiken Technol:Kk | Seal structure of fluid pipe |
| CN2426938Y (en) * | 2000-05-21 | 2001-04-18 | 宁波金帆管件有限公司 | Improved inserting pipe joint |
| CN2628832Y (en) * | 2003-07-04 | 2004-07-28 | 宁波金帆管件有限公司 | Valve with lock |
| JP2005249007A (en) * | 2004-03-02 | 2005-09-15 | Rix Corp | Rotary joint |
| JP2010007790A (en) * | 2008-06-27 | 2010-01-14 | Daihen Corp | Power transmitting mechanism |
| JP2010142363A (en) * | 2008-12-17 | 2010-07-01 | Nipro Corp | Medical valve |
| CN201359166Y (en) * | 2009-03-11 | 2009-12-09 | 辽宁华鑫市政建设工程有限公司 | T type packing washer |
| CN201982865U (en) * | 2011-04-19 | 2011-09-21 | 上海久通塑胶制品有限公司 | Socket type plastic pipe connecting flange sealing ring |
| CN104023493A (en) * | 2014-06-19 | 2014-09-03 | 哈尔滨工业大学（威海） | Waterproof sealing device for underwater electrical equipment wire via hole |
| CN105662579A (en) * | 2016-03-08 | 2016-06-15 | 四川航天世都制导有限公司 | Novel laser treatment handle |
| CN205698100U (en) * | 2016-04-11 | 2016-11-23 | 佛山市爱斯伽罗激光科技有限公司 | A kind of output optical fibre mounting structure of dental hand-held laser |
| CN206630670U (en) * | 2016-12-26 | 2017-11-14 | 翟月 | A kind of ablation needle with microwave and chemical ablation function |
| CN208892768U (en) * | 2018-01-31 | 2019-05-24 | 海口市人民医院（中南大学湘雅医学院附属海口医院） | Cooling device of microwave ablation needle |
Non-Patent Citations (1)
| Title |
|---|
| 针对患者调强放射治疗计划的剂量学验证;戴建荣, 胡逸民, 张红志, 关莹, 张可, 王闯;中华放射肿瘤学杂志(03);全文 * |
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