Device for preventing contamination of positive-pressure connector of indwelling needle and method based on same
US11697014B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 25, 2017 |
| Grant date | Jul 11, 2023 |
| Priority date | — |
| Expiry date | Jun 20, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2325/02834
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A device for preventing contamination of a positive-pressure connector (6) of an indwelling needle and a method based on same. The device comprises a shell (1), a connecting port (3) fixedly connected to the shell (1) and used for connecting to the positive-pressure connector (6), an air pressure balance hole (5) disposed opposite to the connecting port (3) and provided on the shell (1), and a filtering membrane (2) provided between the air pressure balance hole (5) and the connecting port (3). The device is simple in structure, adopts a structural design of the filtering membrane (2), can filter microorganisms, bacteria, viruses, dusts, and particulate pollution sources, and is used during indwelling of infusion intervals to prevent the positive-pressure connector (6) from being exposed to the air and maintain the aseptic state and positive-pressure condition of the positive-pressure connector (6) during indwelling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.