Dual lumen catheter
US5188593A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 7, 1991 |
| Grant date | Feb 23, 1993 |
| Priority date | — |
| Expiry date | Aug 7, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7542
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A dual lumen catheter, for insertion into a vein of a patient for use in haemodialysis treatments, having first and second portions defining a shorter intake lumen and a longer return lumen. The intake lumen is closed at its end and receives blood through at least one opening in the side wall of the catheter and the second lumen includes the second portion which is of smaller cross-section than the first portion. Also described is a catheter having an intake lumen and a return lumen in which the return lumen has a tip of different stiffness from the main body of the catheter, the intake lumen being closed at its end and receiving fluid through an opening in the side wall of the catheter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.