Three-way stopcock, and liquid transfusion circuit or blood transfusion circuit either using the three-way stopcock
US7695445B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 11, 2002 |
| Grant date | Apr 13, 2010 |
| Priority date | — |
| Expiry date | May 8, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86493
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A three-way stopcock that can be opened/closed in the same manner as conventional operation methods and can reduce stagnated portions of fluid in a fluid flow passage. Out of branch openings, a first branch opening and a second branch opening are arranged on a straight line, and a third branch opening is directed perpendicularly to the line connecting the first and second branch openings. Provided at a flow passage switch portion are a first flow-passage opening and a second flow-passage opening that are arranged on a straight line and a third flow-passage opening that is directed perpendicularly to the line connecting the first and second bran openings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.