Medical guide wire, an assembly of microcatheter and guiding catheter combined with the medical guide wire, and an assembly of ballooncatheter and guiding catheter combined with the medical guide wire
US8845551B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 29, 2011 |
| Grant date | Sep 30, 2014 |
| Priority date | — |
| Expiry date | Mar 29, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/09175
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In a medical guide wire 1, a helical spring body 3 is made of austenitic stainless steel wire treated with a solid-solution procedure, and tightly drawn with a whole cross sectional reduction ratio as 90%-99.5%. A metallic wire element of the helical spring body 3 is heat treated at low temperature within a range in which a tensile rupture strength of the helical spring body 3 rapidly increases by partly or totally making use of a conductive heat generated when a core wire 2 and the helical spring body 3 are in part bonded by means of a welding member 4. This makes it possible to improve a mechanical strength property, especially a fatigue-resistant property against a repetitive bending action of the helical spring body 3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.