Medical guide wire
US9468451B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 2016 |
| Grant date | Oct 18, 2016 |
| Priority date | — |
| Expiry date | Feb 12, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/09083
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A distal end portion 2B of the core has a structure of a combined truncated cone 26 formed by connecting truncated cones satisfying a predetermined relational expression. An outer diameter ratio between the maximum outer diameter and the minimum outer diameter of the combined truncated cone 26 is greater than the outer diameter ratio between a large diameter proximal portion and a small diameter distal portion of an inner coil 4, and is greater than the outer diameter ratio between a large diameter proximal portion and a small diameter distal portion of the outer coil. Because of this, the rotation angle of the proximal side is reduced when rotation operation is performed and the torsional moment toward the distal end side is increased. Thus, the perforation performance at the completely occluded lesion can be improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.