Tool-less pacemaker lead assembly
US5086773A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 10, 1990 |
| Grant date | Feb 11, 1992 |
| Priority date | — |
| Expiry date | Sep 10, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3752
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A lead connection assembly for an implantable device forming a subcutaneous electrical and mechanical connection with an electrical lead without tools employs connectors in the form of a resilient conductive spring-retainers each in the shape of a generally cylindrical helix disposed in a bore for receiving the lead. Each spring retaining connector is electrically connected to the internal circuitry of the implantable device using a feedthrough connection and the helix of the retaining connector means is adapted to receive a terminal poriton of the lead. The helix operates in a manner such that when the lead is rotated a partial revolution within the helix in a direction, which would tend to unwind the helix, the lead is simultaneously freed to move axially in and out of the helix coil and when the lead is rotated a partial revolution within the helix in a direction which tends to tighten the helix winding, the coil permanently seizes the lead such that it cannot be withdrawn without first being rotated in the unwinding direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.