Negative pressure wound therapy systems, devices, and methods
US10624794B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 2019 |
| Grant date | Apr 21, 2020 |
| Priority date | — |
| Expiry date | Feb 20, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/3344
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A negative pressure wound therapy system includes a wound dressing and a suction device configured to be in fluid communication with the wound dressing via a conduit to channel a fluid between at least the wound dressing and the suction device. The suction device includes a vacuum connection configured to be coupled to the conduit, a vacuum pump, an analog electronic pressure sensor in electrical communication with the vacuum pump, and a passive valve assembly. The passive valve assembly is in fluid communication with (1) the vacuum pump, (2), the analog electronic pressure sensor, and (3) the vacuum connection, and is configured to maintain the vacuum pump in fluid communication with the vacuum connection within a predefined pressure range, and to passively inhibit fluid communication between the vacuum pump and the vacuum connection outside of the predefined pressure range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.