Medical guide wire, method of making the same, and assembly of balloon catheter and guiding catheter combined with the medical guide wire
US8894587B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 1, 2010 |
| Grant date | Nov 25, 2014 |
| Priority date | — |
| Expiry date | May 25, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/09133
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In a medical guide wire 1, a flexible core wire 2 is made of austenitic stainless steel wire treated with a solid solution procedure, and drawn with a whole cross sectional reduction ratio as 80%-97.6%. The core wire 2 and a helical spring body 3 are welded by a welding member 4. The welding member 4 is made of eutectic alloy having a melting temperature ranging from 180° C.-495° C. Upon welding the helical spring body 3 to the core wire 2 which is made of the stainless steel metal, the procedure prevents the medical guide wire 1 from sacrificing its mechanical strength by significantly reducing the thermal influence on the core wire 2 and the helical spring body 3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.