High-efficiency water-cooled microwave thermocoagulation hemostasis needle antenna
A high-efficiency, water-cooled technology, applied in medical science, surgery, parts of surgical instruments, etc., can solve problems such as low antenna efficiency and large standing waves
Inactive Publication Date: 2015-05-20
NANJING VISON CHINA MEDICAL DEVICES R & D CENT
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Problems solved by technology
[0003] Existing microwave hemostasis uses low power output, generally only 30-40W. At the same time, the efficiency of the antenna is low, and the standing wave is relatively large. It can only be used for hemostasis in a small range of tissues. The hemostatic coagulation range is only about 5×5 mm. Effective coagulation and hemostasis cannot be performed on bloody tissues such as liver, spleen, and kidney during surgery
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[0016] The high-efficiency water-cooled microwave thermocoagulation hemostatic needle antenna of this embodiment, such as figure 1 with figure 2 As shown, it includes two stabbing heads 1 arranged in parallel, a needle bar 2 fixedly connected to the tail end of the stabbing head 1, and a coaxial cable 3 passing through the needle bar 2; the stabbing head 1 has an axial central blind hole, The front end of the coaxial cable 3 extends into the blind hole, the part of the coaxial cable 3 extending into the blind hole is provided with a launch window, and the tail end of the coaxial cable 3 is equipped with a coaxial radio frequency connector 5; There is an ABS handle 4; the handle 4 has a water inlet chamber 7 and a water outlet chamber 6 separated by a water barrier 8; the coaxial radio frequency connector 5 is also accommodated in the handle 4.
[0017] Such as image 3 As shown, the inside of the needle bar 2 has a water inlet pipe 12 sleeved on the coaxial cable 3, the gap...
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The invention relates to a high-efficiency water-cooled microwave thermocoagulation hemostasis needle antenna and belongs to the technical field of microwave hemostasis. The antenna comprises two parallel points, needle bars fixedly connected to the tail ends of the points and coaxial cables penetratingly arranged in the needle bars; an axial central blind hole is arranged in each point, the front end of each coaxial cable extends into each blind hole, the part, extending into the corresponding blind hole, of each coaxial cable is provided with a transmitting window, and a coaxial radio-frequency connector is mounted at the tail end of each coaxial cable; a handle is mounted at the tail ends of the needle bars; a water inlet chamber and a water outlet chamber separated by a water isolation ring are arranged in the handle; a quick connecting water nozzle is mounted to each of the water inlet chamber and the water outlet chamber; the coaxial radio-frequency connectors are accommodated in the handle. The transmitting end of the antenna is of a high-efficiency dual-leak-seam structure, the standing-wave ratio of the antenna is less than 1.5 in human tissue, and effective rate of microwave energy is higher than 95%. The antenna is put in a water cooling structure and can load microwave power up to 100W to the radiation end.
Description
technical field [0001] The invention relates to a high-efficiency water-cooled microwave thermocoagulation hemostatic needle antenna, which belongs to the technical field of microwave hemostasis. Background technique [0002] With the advancement of surgical treatment science, clinical requirements for hemostasis during the resection of bloody tissues such as the liver are getting higher and higher. Currently, the intraoperative hemostasis techniques used include high-frequency electricity, ultrasound, and radio frequency. Microwave hemostasis is the use of microwave energy to act on blood proteins to immediately produce thermal coagulation and blocking effects to stop bleeding. Due to the fast speed (one millionth of a second), strong and good effect, low temperature during thermal coagulation (about 60-80°C), no smoke caused by carbonization, no adhesion, safety and no counter electrode, so it will become a popular choice in the future. The trend of the first choice for h...
Claims
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IPC IPC(8): A61B18/18
Inventor 季加孚
Owner NANJING VISON CHINA MEDICAL DEVICES R & D CENT