Guidewire with movable core and external tubular safety cover
US4895168A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 21, 1988 |
| Grant date | Jan 23, 1990 |
| Priority date | — |
| Expiry date | Jan 21, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/09091
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A movable core guidewire assembly comprising a wire wound cylindrical casing having a distal closed end and a proximal open end, a resilient movable core wire extending inside the cylindrical casing between its proximal and distal ends, and a plastic safety cover coextensive with and surrounding the wire wound cylindrical casing. The plastic safety cover functions to retain fragments of a broken guidewire, replacing the interior safety wire used in prior art guidewire assemblies. Therefore, the movable core wire can utilize all the space inside the cylindrical casing to maximize the ability of medical personnel to manipulate the guidewire assembly inside the body. A specific procedure for forming a closed distal tip of the guidewire assembly from an initially open ended casing and safety cover is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.