Catheter introducer with fluid chamber valve
US5460616A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 1994 |
| Grant date | Oct 24, 1995 |
| Priority date | — |
| Expiry date | Apr 19, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2039/0673
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A catheter introducer comprises a tubular sheath having an axis, and a housing carried on one end of the sheath. The housing encloses a fluid-filled chamber and carries a pair of valves aligned along the axis, the valves being at opposed ends of the fluid-filled chamber and communicating therewith. The valves serve to substantially retain the fluid within the housing, while allowing a catheter to pass through the valves and through the tubular sheath. The fluid of the chamber is preferably a gel or high viscosity liquid. The valves and fluid-filled chamber prevent the backflow of blood both in the presence and the absence of a catheter or the like extending through the valves and chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.