Femoral arterial cannula
US4944729A · kind A · utility
28Cited by
6References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 29, 1988 |
| Grant date | Jul 31, 1990 |
| Priority date | — |
| Expiry date | Aug 29, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M25/0662
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An arterial cannula is formed with an angled shoulder that limits the degree of insertion of cannula tip into an artery. The shoulder also forms a seal with the artery. Suture flaps are formed on the cannula to attach the cannula to the patient's skin. A stylet for the cannula has a stop on its exterior that prevents blood flow between the cannula and the stylet, and permits clamping of the cannula with the stylet partially withdrawn. A removable anti-backflow ring seals the cannula and provides a convenient initial movement limit for the stylet stop.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.