Negative pressure treatment including mechanical and chemical pump
US11759369B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2022 |
| Grant date | Sep 19, 2023 |
| Priority date | — |
| Expiry date | Apr 1, 2042 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/073
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A negative pressure assembly includes a drape, a sealing element, a reactor, a valve and a mechanical pump assembly. The drape and the sealing element, when applied to the skin, cooperate to define an enclosed volume. The reactor is located so as to be in fluid communication with the enclosed volume when the drape is covering the dressing site. The reactor reacts with a selected gas found in air to consume the selected gas. The valve has a first operating state in which gas is drawn from the enclosed volume through the valve. The mechanical pump assembly includes a pump chamber fluidly connectable to the enclosed volume through the valve when the valve is in the first operating state. The mechanical pump is configured to fluidly connect with the enclosed volume and draw air from the enclosed volume into the pump chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.