Plasma-assisted odour-free regulation of gas pressure inside stoma bag
US10874540B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 7, 2017 |
| Grant date | Dec 29, 2020 |
| Priority date | — |
| Expiry date | Dec 22, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2259/818
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An ostomy pouching device is configured to allow two-way flow of gas between the device and a stoma bag (100). A check valve (104) is configured to allow ambient air into a channel of the device, and thereby into the stoma bag, when a pressure of the gas in the channel is less than a pressure of the ambient air; another check valve (105) is configured to allow gas to flow into a deodorizing reactor (110) when a pressure of the gas in the channel is greater than a pressure of the ambient air. The deodorizing reactor includes a plasma reactor configured to generate plasma in the channel for deodorizing the gas in the channel before being expelled from the device into the ambient air. The plasma reactor is preferably a dielectric barrier discharge (DBD) reactor. It may also include a secondary active carbon filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.