Patent ID: 11964093
Assignee: SMITH & NEPHEW PLC
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 3:
4. A method of providing reduced pressure treatment to a tissue site, the method comprising:
storing a negative pressure within a first chamber with an external reduced-pressure source;
delivering a desired therapy pressure from a second chamber comprising an outlet port to the tissue site, wherein the first chamber and the second chamber are connected in series by a single conduit adapted to provide fluid communication between the first chamber and the second chamber; and
responsive to a pressure difference between the second chamber and the first chamber, reducing pressure within the second chamber by allowing fluid communication between the first chamber and the outlet port of the second chamber,
wherein reduced pressure is communicated from the external reduced-pressure source through a first valve to the first chamber and subsequently through a second valve to the second chamber, and
wherein the external reduced-pressure source, the first valve, the first chamber, the second valve, and the second chamber are arranged in series along the single conduit.