Implantable infusion device and method of manufacture thereof
US5147483A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1990 |
| Grant date | Sep 15, 1992 |
| Priority date | — |
| Expiry date | Apr 13, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2039/0072
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An improved infusion device is of the type which can be implanted for drug delivery within a patient's body, and supplied with infusate without the need for surgical removal. The infusion device has a housing forming a chamber and an entry port into the chamber. The entry port is closed by a septum. The septum has a convex top section extending from the housing, and a frusto-conical section which matingly engages a similarly shaped interior surface of the housing. The interior surface can be provided with a plurality of notches with which the septum engages by material flexure. This arrangement improves retention of the septum and operation of the infusion device, and permits advances in the method by which such devices are manufactured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.