Two-channel needle for withdrawing body fluids
US5373855A · kind A · utility
16Cited by
15References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 8, 1993 |
| Grant date | Dec 20, 1994 |
| Priority date | — |
| Expiry date | Sep 8, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M25/0032
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A two-channel sampling needle is designed for withdrawing body fluids, such as blood or tissue fluid, has two essentially parallel cannulas, the first cannula being provided with an insertion needle which may be removed after the sampling needle has been introduced, its sharpened end projecting beyond the end of the first cannula. At the distal end of the sampling needle the second cannula has at least one connecting opening into the first cannula. A mounting part of the sampling needle is provided with fittings for the two cannulas and with a separate opening plugged by a flexible stopper for removal of the insertion needle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.