Flexible sheath with varying durometer
US11000670B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2004 |
| Grant date | May 11, 2021 |
| Priority date | — |
| Expiry date | May 11, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M25/0053
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A flexible kink-resistant introducer sheath (10). The introducer sheath includes an inner liner (31), a coil (33) and an outer tube (33). The inner liner includes a passageway (30) extending longitudinally therethrough, where a catheter (50) can be advanced through the passageway. The coil (33) has a plurality of turns positioned longitudinally and compression fitted around the inner liner (31), where the turns have a predetermined spacing therebetween. The outer tube (20) is positioned longitudinally around the coil (33) and the inner liner (31), and is connected to the inner liner through the spaces between the turns. A diameter difference between the inner liner and the catheter is in a range of about 0.0005 to about 0.004 inch (0.013 to about 0.10 mm).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.