Guidewire extension system
US6491646B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 11, 1993 |
| Grant date | Dec 10, 2002 |
| Priority date | — |
| Expiry date | Mar 11, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M25/0905
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A roll-formed, guidewire extension system for connecting an extension wire to a guidewire is disclosed. The system comprises a connector or sleeve, such as a turnbuckle, having a tubular outer body, a guidewire retention means, an extension wire retention means, a guidewire and an extension wire. A sleeve or turnbuckle nut is produced by rolling a portion of a formable hollow tubular workpiece upon an elongated projection with the projection being disposed at an angle with respect to the axis of the workpiece. This process is repeated on the remaining part of the workpiece to create external threads in the sleeve of opposite pitch. The roll-formed external beads or dents in the sleeve create threads in the interior of the sleeve, the threads running in opposite directions and meeting at approximately the middle of the sleeve. The guidewire and the extension wire engagement means are preferably helically wound wires which are connected e.g., brazed to reduced diameter portions of the guidewire/extension wire. The guidewire is connected to the extension wire by inserting the respective engagement portions into the open ends of the sleeve, and rotating the sleeve in a single direction…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.