Pump system for negative pressure wound therapy

US7857806B2 · kind B2 · utility

Assignee

• Boehringer Technologies, LP · US

Inventors

• John Karpowicz · Chester Springs, US
• Christopher L. Radl · Malvern, US
• Kevin P. Klocek · Lansdowne, US
• John R. Boehringer · Lansdowne, US
• Derek Norton · Pottstown, US
• Robert Kropp · Menasha, US

Key dates

• Filing date: Apr 12, 2007
• Grant date: Dec 28, 2010
• Expiry date: May 5, 2027

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2205/6081
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A pump system for applying negative pressure to a wound, including a flow monitor capable of detecting a deviation from a reference airflow rate provided by a controlled leak to determine whether the system is operating normally or abnormally, and a flow status annunciator to indicate a normal operating condition or whether an abnormal condition is a leak or an occluded line in the system. The pump system further includes a pressure controller for regulating operation of a pump to control pressure in the system at a range around a user-selected setpoint. The pump system may also include a waste collector and a level sensor for detecting when the collector is full.