Device for regulating the flow rate in a tube
US4620564A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 18, 1985 |
| Grant date | Nov 4, 1986 |
| Priority date | — |
| Expiry date | Jan 18, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87434
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A device for regulating the flow rate in the tube, e.g. in infusion- and transfusion assemblies. The flow rate can be regulated by twisting a portion of the tube by means of a twisting device. The tube comprises at least along the portion of its length which is intended to be twisted a plurality of separate or communicating flow passages. Between said flow passages there are provided distance members arranged about or forming an inner core in the tube about which the tube is twisted and which reduces compression of the tube. When the tube is twisted the free space between said distance members is gradually reduced in the twisted cross-section of the tube and by that a reduction of the flow area is obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.