Displacement-activated medical check valve
US5697915A · kind A · utility
Inventor
Key dates
| Filing date | May 30, 1996 |
| Grant date | Dec 16, 1997 |
| Priority date | — |
| Expiry date | May 30, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/3223
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A displacement-activated medical check valve is provided for selectively opening and closing medicinal fluid communication. The check valve includes a flexible elastomeric member that has a proximal end and a distal end and has a sealed perforation defined at least partially through the flexible elastomeric member. A housing receives the flexible elastomeric member so that it can be displaced along the length thereof. A contact member is provided for engaging the distal end of the elastomeric member when at least a portion of the elastomeric member is displaced against the contact member. The elastomeric member and the sealed perforation are sized and configured such that the perforation is shortened and thereby compressed open when the elastomeric member is compressed against the contact member. When a compressive force is removed the elastomeric member rebounds to close the perforation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.