Catheter system for the delivery of a low volume bolus
US6764461B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 1998 |
| Grant date | Jul 20, 2004 |
| Priority date | — |
| Expiry date | Aug 21, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/1093
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A catheter system includes a catheter having a proximal end, a distal end, and a lumen extending therein. An administering portion is disposed at the distal end of the catheter and is configured to administer a bolus of liquid in response to positive pressure in a distal portion of the lumen. The catheter system of the present invention has a dead space of less 0.32 cc and preferably less than 0.15 cc in which residual therapeutic agents remain after delivery. The present invention also includes a method of administering a liquid to a treatment site. The distal end of the catheter is transluminally positioned proximate the treatment site. The catheter is charged by placing a bolus of the liquid in the lumen A positive pressure is created to drive the bolus to the administering tip to express the bolus from the distal end of the catheter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.