Blood access systems
US4776843A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1980 |
| Grant date | Oct 11, 1988 |
| Priority date | — |
| Expiry date | Nov 21, 2000 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2039/027
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Improvements and accessories for a septum closed T-shaped blood access device adapted for implantation into a patient. The implantable device has a stem portion extending above the skin of the patient and defining a septum closed opening into the device. The improvements include an improved septum having a groove in the side thereof encircling the septum and an elastomeric ring carried within the side groove, an improved needle assembly which provides access to the circulatory system through the septum, and a flexible cap for sealing the stem of the implantable device from the outside atmosphere which may be fitted in place or removed without the necessity of specialized tools.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.