Circular catheter with non-circular shaping wire
US11565118B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2017 |
| Grant date | Jan 31, 2023 |
| Priority date | — |
| Expiry date | Jul 9, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M25/0136
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A catheter has a body including a proximal region, a neck region, and a distal region. A shaping wire is disposed within the distal region to predispose it into at least a partial loop, which may have a fixed or variable radius of curvature. The shaping wire includes a distal portion having a circular transverse cross-sectional shape and a proximal portion having a non-circular (e.g., rectangular) transverse cross-sectional shape. The proximal portion of the shaping wire can have a width-to-thickness ratio of at least about 4, such as about 4.67. A transition portion can promote a gradual transition from the circular to the non-circular transverse cross-sectional shape, for example by increasing a width of the shaping wire by about 0.001″ and/or by decreasing a thickness of the shaping wire by about 0.001″ for every about 0.004″ in length through the transition portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.