Chronically implantable guide tube for repeated intermittent delivery of materials or fluids to targeted tissue sites
US7819842B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 21, 2006 |
| Grant date | Oct 26, 2010 |
| Priority date | — |
| Expiry date | Mar 2, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2210/0693
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A therapy delivery system for the intermittent delivery of biologics, chemicals, or pharmaceuticals into tissues involves a chronically implantable guide tube having a guide cannula with a proximal and a distal end, an access port mounted on the proximal end of the guide cannula and adapted for chronic implantation into a patient, a first stop mounted near the distal end of the guide cannula and a delivery cannula insertable into the lumen of the guide cannula through the access port. The delivery cannula mechanically interacts with the first stop and is designed to prevent the delivery cannula from extending beyond a predetermined distance from the distal end of the guide cannula. A tissue-piercing tip may be attached to the distal end of the delivery cannula. A stylet may be used to occupy the lumen of the guide cannula when the delivery cannula is not in use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.