Removal device for removing obstruction in respiratory tract and connector
US11478575B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 3, 2021 |
| Grant date | Oct 25, 2022 |
| Priority date | — |
| Expiry date | Aug 3, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/3337
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A removal device includes a collapsible gasbag, a connector and a face mask, wherein the collapsible gasbag is provided with a gas storage cavity and an opening; the connector is connected to the opening, and the connector is provided with a first check valve and a second check valve; a first gas outlet end of the first check valve is in communication with the gas storage cavity, a second gas inlet end of the second check valve is in communication with the gas storage cavity, and a second gas outlet end of the second check valve is in communication with the outside; and the face mask is connected to a first gas inlet end of the first check valve, and the face mask is provided with a flexible annular pad.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.