Anti-reflux ureteral stents and methods
US6908447B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2002 |
| Grant date | Jun 21, 2005 |
| Priority date | — |
| Expiry date | Apr 19, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2210/1089
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An anti-reflux ureteral stent includes an elongated member with a distal end having a first retention structure and a proximal end having a second retention structure. A lumen extends between the distal and proximal ends. The elongated member may include a valve near the proximal end and distal to the second retention structure. The valve may include one or more slits or windows tending to render the elongated member collapsible. The valve may include one or more protrusions to partially occlude the lumen. A protrusion, if present, may be shaped as a helical thread. The second retention structure may be shaped as a barb to engage a ureteral orifice in a bladder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.