Drug delivery catheter with retractable needle
US6692466B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2000 |
| Grant date | Feb 17, 2004 |
| Priority date | — |
| Expiry date | Jan 7, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/009
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A catheter assembly having a balloon disposed at the distal end thereof and a therapeutic substance delivery assembly, including a needle in fluid communication with a therapeutic substance delivery lumen for allowing a therapeutic substance to be injected into a diseased physiological lumen. A deflector is positioned along an inside wall of the delivery lumen, positioned, such that as a bend region forms caused by the movement of the delivery lumen, the deflector bends to rest on the outside curvature of the bend. As the needle is made to travel through the bend, the ribbon helps to bounce the needle tip off the wall of the delivery lumen, allowing the needle to travel through the bend without digging into and/or gouging the delivery lumen wall.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.