Apparatuses and methods for detecting leaks in a negative pressure wound therapy system

摘要

Leak location devices and methods of using leak location devices that can be used in conjunction with negative pressure wound therapy systems are disclosed. In some embodiments, a leak location device can include a microphone for detecting sound pressure produced by a leak. Detected sound pressure can be compared to a threshold, which can correspond to background or ambient sound pressure. Background or ambient sound pressure can correspond to sound produced by a negative pressure source. The leak detection device can include a display configured to visually depict the detected sound, and a light source which creates a visual depiction of the coverage angle of the microphone.

主权项

1. An apparatus for applying negative pressure to a wound, comprising:
a dressing configured to be placed over the wound to create a substantially fluid impermeable seal over the wound; a negative pressure source configured to be coupled to the dressing; and a leak detection device configured to detect leaks, the leak detection device comprising a microphone configured to detect sound produced by a leak and a processor, the microphone further configured to pass over the surface of the dressing to detect sound waves produced from a specific location of the dressing and identify the location of the leak, wherein the processor is configured to execute software that determines the location and/or presence of the leak by: detecting sound obtained from the microphone; and limiting interference from background noise sources by comparing detected sound to a threshold, wherein the threshold is determined by measuring ambient sound produced by the negative pressure source providing negative pressure.