Dual-lumen fistula needle
US4675004A · kind A · utility
147Cited by
7References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 16, 1985 |
| Grant date | Jun 23, 1987 |
| Priority date | — |
| Expiry date | Apr 16, 2005 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/0031
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A dual-lumen fistula needle for use in hemodialysis treatment. The needle has a gently tapered neck and is divided into arterial and venous lumens by a center septum which is bonded in place. The septum is formed so that the lumens have substantially equal cross sections substantially throughout the length of the needle to promote equal flow rates in the lumens. The diameter of the needle at the tip is similar to that of single-lumen needles in order to reduce discomfort on insertion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.