Implantable port septum
US4834720A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 24, 1987 |
| Grant date | May 30, 1989 |
| Priority date | — |
| Expiry date | Dec 24, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24983
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A septum is provided for use with implantable ports used for repeated drug delivery infusions. The septum allows for a substantially higher (more than twice) number of punctures prior to leakage and failure. This is achieved by the use of two different Shore A durometer hardnesses for different sections of the septum, one of harder material than used in prior art septums for the main body of the septum, and a section of much softer Shore A duromater hardness adjacent the inner surface of the septum for greater sealing facility when a needle is withdrawn. In addition, the greater hardness of the main body allows for greater stability of the needle when in place in the septum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.