A portable field blood preservation device

Abstract

The invention discloses a portable outdoor blood storage device, and belongs to the technical field of medical equipment. A refrigerating device is used for storing blood transfusion bags; liquid nitrogen is used as refrigerants; after the liquid nitrogen is vaporized, heat is absorbed to lower the temperature in a blood bin; the air pressure in a liquid nitrogen bin can be increased through the vaporized liquid nitrogen; the vaporized liquid nitrogen is recompressed by a compressor as liquid for flowing back into the liquid nitrogen bin; the operation is circulated to achieve the purpose of refrigerating the internal of the blood bin; an unfreezing device uses warm water for unfreezing; the unfreezing temperature is not higher than 37 DEG C; frozen blood bags are put in an unfreezing bin;the warm water flows out from a water outlet to pass through the frozen blood bags; through a heat transfer mode, the blood bags are unfrozen; low-temperature water enters an infrared heating devicefrom a water inlet, and is circulated through a water pump; and through the design, the low-temperature water can be heated as far as possible, so that the unfreezing speed is accelerated.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a portable field blood preservation device. Background technique [0002] Generally, the human body of an adult has about 4000-5000 milliliters of blood, which is equivalent to the capacity of a boiled water bottle. If the acute blood loss reaches more than 30%, that is, more than 1000 milliliters, it may reach the limit of human body compensation, which will endanger people's lives. More often, the injured will have pale complexion, pale lips, cold sweat on the skin, cold hands and feet, weakness, shortness of breath, fast and weak pulse, etc. When the amount of bleeding exceeds 1500 ml: it will cause insufficient blood supply to the brain, and the injured will experience blurred vision, thirst, dizziness, confusion or restlessness, and even coma symptoms. If it is not timely, it will lead to shock or even death of the patient. [0003] Conventional blood transfusion d...

AI Technical Summary

Problems solved by technology

[0003] Conventional blood transfusion devices are generally carried out in hospitals. Since the blood needs to be frozen, water heating and thawing is used when blood transfusion is required. The thawing temperature does not exceed 37 degrees Celsius, otherwise it is easy to cause blood deterioration. Most of the blood storage devices consider the storage temperature, but few consider the thawing of the blood. To maintain the temperature of the blood, relying solely on the compressed air refrigeration of the compressor, the cooling effect is too poor, and it cannot meet the standard of blood freezing. Considering the refrigeration effect, the thawing of the blood also needs to be thawed quickly, and the conventional warm water thawing takes a long time

Images