Medical guide wire
US6423012B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2000 |
| Grant date | Jul 23, 2002 |
| Priority date | — |
| Expiry date | Jul 20, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/09175
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A medical guide wire which is to ensure a good maneuverability when inserting its front end portion into blood vessels while turning the front end portion around its axis so as to provide an improved remedial treatment with patients. For this purpose, a core elongation has a torsional rigidity coefficient of 16 or less in terms of K ×103. A helical spring has a helical diameter-to-line diameter ratio in the range of 2.5˜3.5. Where the torsional rigidity coefficient is a divided value of (a maximum torsional stress based on a torsional moment to which the core member is subjected)/(the torsional moment to which the core member is subjected). The helical diameter-to-line diameter ratio is a value of (a mean value of outer and inner diameters of the helical spring)/(a line element diameter of the helical spring).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.