Implantable endocardial lead with spring-loaded screw-in fixation apparatus
US5152299A · kind A · utility
82Cited by
9References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 19, 1991 |
| Grant date | Oct 6, 1992 |
| Priority date | — |
| Expiry date | Apr 19, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/0573
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An implantable endocardial lead with retractable sharpened helix. The piston has a central bore for receiving a specialized stylet. The stylet comprises a flexible wire having an enlarged distal end or tip. An elastomeric sliding sleeve fits over the wire. When the proximal end of the stylet is inserted into the bore in the piston, the wire can be withdrawn slightly, pulling the enlarged tip into the tube, and wedging the tube against the walls of the bore. By manipulating the stylet, the helix can be exposed outside of the lead, or retractable into the lead, as desired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.