Cryosurgery device capable of achieving freezing and rewarming by adjusting gas pressure
A pneumatic and surgical technology, applied in the fields of cooling surgical instruments, medical science, and parts of surgical instruments, etc., can solve the problem of waste of low-temperature working medium of cryosurgery equipment, improve gas utilization rate, increase tumor hyperthermia, and make breakthroughs. The effect of the warming limit
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Embodiment 1
[0042] Example 1, such as figure 1 As shown, the present invention proposes a cryosurgical device that adjusts the air pressure to achieve freezing and rewarming, including a high-pressure freezing air circuit, a low-pressure heating air circuit, a split air circuit and component A.
[0043] The high-pressure refrigerated gas circuit includes a high-pressure gas input pipe 4 and a refrigerated gas main pipe 6 that are sequentially connected to the outlet of the high-pressure gas source 1. The high-pressure gas input pipe 4 is provided with a first air pressure gauge 2 and a first pressure regulating valve 3 A high-pressure pressure limiting valve 5 is provided at the junction of the high-pressure gas input pipe 4 and the refrigerated gas main pipe 6 . The low-pressure heating gas circuit includes a low-pressure gas input pipe 17, a confluence gas pipe 12, and a heating gas main pipe 20 connected to the outlet of the low-pressure gas source 14 in sequence. A second air pressur...
Embodiment 2
[0052] Embodiment 2, although, in embodiment 1, gas heater 19 is not provided, but throttling freezing and rewarming can also be realized, but the rewarming temperature will not be very high, basically at 0°C or slightly higher Some, such as 10-20°C; in order to achieve a better rewarming effect, and even realize the function of tumor hyperthermia (reaching above 40°C), therefore, on the basis of the structure of the above-mentioned embodiment 1, such as figure 2 As shown, a gas heater 19 is provided on the low-pressure heating gas path between the low-pressure pressure limiting valve 13 and the refrigerator heating solenoid valve 21 . Adopting the technical scheme provided with the gas heater 19 in embodiment 2, not only rewarming can be achieved, but also heating and rewarming to 40-60° C. can be realized. The difference between the heating and rewarming process in embodiment 2 and the rewarming process in embodiment 1 is that the pressure is limited to the working pressure...
Embodiment 3
[0053] Example 3, such as image 3 As shown, on the basis of the structure of the above-mentioned embodiment 1, multiple components A are connected in parallel between the end of the refrigerated gas main pipe 6 and the end of the heating gas main pipe 20, so that multiple refrigerators can work at the same time, and can Independently control the working mode of each freezer to realize the function of freezing and rewarming.
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