Atraumatic ureteral access sheath
US10046138B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2013 |
| Grant date | Aug 14, 2018 |
| Priority date | — |
| Expiry date | Nov 29, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/0004
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Ureteral access sheaths can have a nonuniform axial-stiffness. A nonuniform axial-stiffness ureteral access sheath can have an inner liner defining a longitudinally extending and generally uniform bore. A non-uniform axial-stiffness outer jacket can define a longitudinally tapered outer surface, and a reinforcement layer can be encapsulated between the inner liner and the non-uniform axial-stiffness outer jacket. The reinforcement layer can have a non-uniform axial-stiffness. For example, a proximal portion of the reinforcement layer can be thicker than a distal portion of the reinforcement layer. A coil of wire can be included in the reinforcement layer, and a diameter of the wire in a proximal portion of the reinforcement layer can be larger than a diameter of the wire in a distal portion of the reinforcement layer. In some instances, the diameter of the wire tapers from the proximal portion to the distal portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.