Locke, Christopher Brian,Blandford, David Robson,Coulthard, Richard Daniel John
申请号：
AU2012245443
公开号：
AU2012245443A1
申请日:
2012.04.19
申请国别(地区):
AU
年份:
2013
代理人:
摘要：
The illustrative embodiments described herein are directed to an apparatus and method for managing reduced pressure at a tissue site. The apparatus comprises a pump for supplying reduced pressure for application of reduced pressure to the tissue site and a motor coupled to the pump to propel the pump. The apparatus further comprises a drive system electrically coupled to the motor that includes a power source that provides a source of direct current power to the motor during an operational period at a substantially constant current and of sufficient magnitude to supply a targeted reduced pressure during the operational period. The drive system also includes a controller that monitors the pumps loading on the motor by measuring the voltage across the motor to determine whether the motor voltage remains within a predetermined operational range of voltages necessary for maintaining the reduced pressure supplied by the pump proximate to the targeted reduced pressure without directly measuring the reduced pressure using a pressure sensor.
