Anti-infective central venous catheter with diffusion barrier layer
US7947031B2 · kind B2 · utility
11Cited by
22References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2006 |
| Grant date | May 24, 2011 |
| Priority date | — |
| Expiry date | Dec 4, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M25/0017
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A catheter includes a wall surrounding a lumen. The wall has an inner portion forming an outer surface of the lumen and an outer portion surrounding at least a portion of an outer surface of the inner portion. A first diffusion rate of materials from the lumen through the inner portion is different from a second diffusion rate through the outer portion. A durometer hardness of the inner portion is lower than a durometer hardness of the outer portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.