Retrievable urethra sparing prosthetic stent and kidney stone intervention system
US8551182B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 27, 2009 |
| Grant date | Oct 8, 2013 |
| Priority date | — |
| Expiry date | Nov 30, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/2215
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention provides devices, a system, and a method for removing kidney stones from the urinary system of a patient with reduced pain and expenses. The system includes expandable, elongated balloon sheaths that deliver and retrieve forceps and a urethral sparing prosthetic stent. The stent is reconstrainable with interwoven nylon strands that are strategically positioned amongst the struts to ensure smooth collapse for removal. An atraumatic coating of PTFE or PET lining on the stent extends from the struts through the tip of the penis to assist patients in passing stones while the stent is in place at the bladder neck. The stent can stay in place for several days while permitting urine drainage. The basket-shaped forceps device has multiple curved, rigid arms to dilate the urethra and capture occluded or embedded stones with a built-in camera. The method is for removing stones through a protected urethral canal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.