Frangible resealable closure for a flexible tube having hold open means
US4181140A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 10, 1978 |
| Grant date | Jan 1, 1980 |
| Priority date | — |
| Expiry date | Feb 10, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/1752
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Valve means in a flexible tube, for example, tubing for connecting blood bags, are provided, which comprises a tubular portion having a closed end, and an elongated, generally rigid member, carried on the exterior of the closed end and positioned within the flexible tube. Frangible means are provided to permit the opening of the closed end by manual manipulation of the elongated member from outside of the flexible tube. The elongated, rigid member is adapted to fit in sealing relationship within the tubular portion after opening of the closed end, to permit resealing of the valve. The elongated, generally rigid member carries longitudinal vanes to provide flow channels along its length. In accordance with this invention, a pair of said vanes in opposed relationship extends rearwardly of the end of the central portion of the rigid member, and the flexible tube defines a bore portion position to receive and resiliently hold the proposed veins when the frangible means is broken and the rigid member is separated from the tubular portion. This prevents accidental reclosing of the valve means by the rigid member moving to obstruct the tubular portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.