Ultrasonically welded, staked or swaged components in an implantable medical device
US7187974B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2002 |
| Grant date | Mar 6, 2007 |
| Priority date | — |
| Expiry date | May 27, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/37512
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention generally relates to an improved implantable medical device (IMD) and more particularly to an ultrasonically weld perforated lid for an IMD to form a hermetic seal between the IMD and the perforated lid. Appropriately configured perforated lids retain one or more components within a cavity or port formed in a part of an IMD. Such lids preferably secure a pierceable resilient grommet, septum or other resilient member in a cavity or port. When an adjustment instrument, a pull tool or a syringe is temporarily inserted therethrough and later extracted, the resilient member heals (i.e., seals and/or reseals). Preferably, the resilient member abuts a mechanical stop and is compressed slightly during assembly and ultrasonic welding of the lid. The resilient member preferably has a lateral dimension like the cavity or port so that when the lid compresses the resilient member it expands slightly and contacts the interior cavity surfaces thus improving the seal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.