This invention discloses an automatic
airway secretion clearing and
nursing system for
neurosurgery based on negative
pressure sensing technology, belonging to the field of medical and
nursing technology. The
system includes a main structure that integrates a main
control unit, a negative
pressure generation and regulation unit, a
suction tubing and operating components, a
sputum collection and
processing unit, a bypass electromagnetic pressure
relief valve, and a micro-
positive pressure generator. The main
control unit is connected to a multimodal sensor
bus and operates a module wake-up scheduling mechanism. Based on the received
multimodal data, it sequentially performs multi-level risk warning judgments. When the judgment meets the preset intervention conditions, the
system performs
physical pressure relief through the bypass electromagnetic pressure
relief valve, and the micro-
positive pressure generator injects
positive pressure buffer
airflow to counteract the
backflow pressure. For high-
viscosity secretions, the system converts the basic suction negative pressure into a pulsating negative pressure
airflow by changing the opening of the electronically controlled
throttle valve. It uses alternating
shear force to destroy the internal structure of the secretions, avoiding mechanical tearing damage and maintaining
fluid pressure balance.