Craniocerebral local low-temperature automatic temperature control device

Abstract

The invention discloses a craniocerebral local low-temperature automatic temperature control device. The device carries out thermoelectric conversion through a temperature detecting circuit by adopting combination of multiple points of sensitive thermocouple sensors, controls the rotating speed of a miniature step motor through a control circuit after an acquired signal is gated through an inspection circuit, thereby controlling instant flow rate of cooling fluid of a closed loop, realizing middle depth low-temperature state in a local surgery zone, and automatically maintaining the surgery zone and peripheral tissues at a certain constant temperature to meet the requirement of a surgery. The whole process can quickly cool, and can reduce the temperature to the temperature required in the surgery in only 3 to 5 minutes after tests. The device not only can cool the middle depth zone in local part, has adjustable temperature, and maintains constant temperature, but also can form a temperature gradient graph in the brain, and has significance for evaluating the effect of low-temperature brain protection.

Description

technical field [0001] The invention belongs to the cranial brain cooling nerve protection technology, in particular to an automatic temperature control device for local low temperature of the cranial brain. Background technique [0002] At present, in neuroprotective medical treatment, in order to prevent the occurrence and development of cerebral ischemia, the method of cooling the body with ice blanket is mainly used. The principle of this method is to use the cooling blanket with cold water circulation, and use the heat exchange between the skin of the patient's trunk and limbs and the cooling blanket to achieve the purpose of lowering the patient's body temperature. However, this method has three main defects: (1) the body temperature of the patient drops slowly, and it takes an average of 8 hours to reach a shallow hypothermia state, and it is also difficult to maintain the hypothermia, which may miss the opportunity for treatment for the patient; (2) the whole body hy...

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Problems solved by technology

However, this method has three main defects: (1) the body temperature of the patient drops slowly, and it takes an average of 8 hours to reach a shallow hypothermia state, and it is also difficult to maintain the hypothermia, which may miss the opportunity for treatment for the patient; (2) the whole body hypothermia usually only It can lower the temperature by 2°C-3°C, and if the temperature is lower than 32°C, it will cause serious complications such as arrhythmia

(3) Most of the organs in the body that do not need to be at low temperature are also in a state of low temperature, which will have a greater impact on other systems and organ functions in the whole body

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