Liquid nitrogen air minimally invasive cold knife cold and heat source system
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A technology of cold and heat source and liquid nitrogen, applied in cooling surgical instruments, heating surgical instruments, etc., can solve the problems of limited popularization and application, expensive equipment, and inability to effectively remove tumors.
Inactive Publication Date: 2014-06-04
李鑫
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Although this minimally invasive surgery system-argon-helium knife has good curative effect, the cost of equipment is expensive, and it has certain requirements on the volume and quality of lesions, so it cannot effectively remove larger tumors, thus limiting the popularization and application of this technology
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[0008] Figure 1 also It is a liquid nitrogen air minimally invasive cold knife cold and heat source system for live animal experiments.
[0009] The preparation stage of the liquid nitrogen air minimally invasive cold knife cold and heat source system is to put 3kg of desiccant into the air drying tank, and fill the liquid nitrogen tank with 5 liters of liquid nitrogen. First of all, to freeze the lesion, you need to turn on the compressor to increase the pressure of the liquid nitrogen tank to 0.3MPa, then open the liquid nitrogen valve, and the liquid nitrogen will flow from the liquid nitrogen tank through the liquid nitrogen suction pipe through the liquid nitrogen valve and supply the liquid nitrogen pipe It flows to the head of the cold knife, and the liquid nitrogen evaporates in the head to freeze the lesion to -174°C, and the nitrogen gas formed by the evaporation of liquid nitrogen is discharged from the handle. Then close the air pressurization valve of the liquid...
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Abstract
The invention relates to a liquid nitrogen air minimally invasive cold knife cold and heat source system, and belongs to the field of medical equipment. The system comprises a liquid nitrogen suction pipe (1), liquid nitrogen (2), a liquid nitrogen container (3), a liquid nitrogen container air pressurization valve (4), an air pipe (5), a hot air pipe (6), a wet air valve (7), a by-pass valve (8), a dry air valve (9), an electric heater (10), a resistance heating wire (11), a liquid nitrogen valve (12), a liquid nitrogen supply pipe (13), a dry air pipe (14), a dry hot air valve (15), a blowoff valve (16), a hot air regeneration valve (17), an air drying tank (18), a wet air ejection ring (19), a moisture input pipe (20), drying agents (21), an air compressor (22), a pressure air pipe (23), a cold and heat source communication valve (24) and a hot air supply pipe (25). Accordingly, what is only needed is to conduct filling with the liquid nitrogen and the drying agents and shut down the corresponding valves, the resistance heating wire and the air compressor, the liquid nitrogen at the temperature of 196 DEG C below zero can be sent to nidus so that the nidus can be frozen, and then hot air at the temperature of 40 DEG C can be sent out, so that focus tissue is rapidly reheated. Thus, the steps are repeated for several times, and all nidus cells can be ruptured and necrotic.
Description
Technical field: [0001] The name of the invention is a liquid nitrogen air minimally invasive cold knife cold and heat source system, which belongs to the field of medical equipment. It includes liquid nitrogen suction pipe (1), liquid nitrogen (2), liquid nitrogen tank (3), liquid nitrogen tank air pressurization valve (4), air pipe (5), hot air pipe (6), wet air Valve (7), bypass valve (8), dry air valve (9), electric heater (10), resistance heating wire (11), liquid nitrogen valve (12), liquid nitrogen supply pipe (13), dry air Pipe (14), drying hot air valve (15), emptying valve (16), hot air regeneration valve (18), air drying tank (19), wet air ejection ring (20), moisture input pipe (21 ), desiccant (22), air compressor (23), cold and heat source contact valve (24), heating air duct (25). The liquid nitrogen air minimally invasive cold knife cold and heat source system only needs to shut down the corresponding valves, resistance heating wires and air compressors to se...
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