MANUALLY POWERED, REGULATED, NEGATIVE PRESSURE PUMP WITH ADAPTER FOR EXTERNAL PRESSURE SOURCE

摘要

To provide a manually actuated reduced pressure treatment system having capabilities for providing a regulated pressure to a tissue site.SOLUTION: A manually actuated pump for applying reduced-pressure therapy includes a charging chamber and a regulated chamber. The charging chamber has a closed end. A regulator passage 275 extends between the charging chamber and the regulated chamber 359, and a valve body 303 is adapted to control fluid communication through the regulator passage. A regulator spring 307 is engaged with the valve body to bias the valve body against a differential between a pressure in the regulated chamber and an ambient pressure. The manually actuated pump also includes: an outlet port 227 coupled to the regulated chamber; and a valve assembly 400 coupled to the charging chamber to permit a fluid flow through the closed end of the charging chamber.SELECTED DRAWING: Figure 18