Negative pressure wound therapy system

摘要

A negative pressure wound therapy system creates a negative pressure environment in the opening of a wound-dressing unit and a positive pressure environment in the collecting bag. Then a positive pressure detecting procedure is proceeded in the positive pressure environment and a negative pressure detecting procedure is proceeded in the negative pressure environment. The detecting results are sent to determine whether a micro pump is stopped.

主权项

1. A negative pressure wound therapy system comprising:
a controller; a sensor assembly electrically connected to the controller and comprising a negative pressure sensor and a positive pressure sensor to detect pressure, and comprising a relief valve; an actuator comprising a micro pump electrically connected to the sensor assembly; a collector comprising a collecting bag; a wound-dressing unit having an opening; a first fluid connection connecting between the sensor assembly and the collecting bag; a second fluid connection connecting between the sensor assembly and the wound-dressing unit; a third fluid connection connecting between the wound-dressing unit, the actuator and the collecting bag, wherein the actuator is located between the wound-dressing unit and the collecting bag in the third fluid connection; whereby the micro pump creates a negative pressure environment in the opening through the third fluid connection and extracts the fluid from the opening of the wound-dressing unit, and the fluid passes the actuator to flow into the collecting bag, and the collecting bag is defined as a positive pressure environment.