Catheter assembly with air purging feature
US4714461A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 7, 1985 |
| Grant date | Dec 22, 1987 |
| Priority date | — |
| Expiry date | Nov 7, 2005 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/1077
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A catheter assembly comprises a flexible tube having a liquid-receiving lumen therethrough. The tube has a proximal end for receiving liquid into the lumen and has a closed, but penetrable, distal end. The catheter assembly also comprises an air purging member including a body operatively, but preferably removably, positioned on the distal end of the tube. A hollow cannula extends through the distal end of the tube in fluid communication with the lumen. The cannula provides a path to the outside environment for purging air from the lumen as liquid is introduced into the lumen. The distal end is sealable to retain liquid within the lumen after the air purging member is removed from the tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.