Slipover antegrade loading calculus extraction instrument system
US4893621A · kind A · utility
33Cited by
5References
7Claims
0Family size
Inventor
Key dates
| Filing date | Aug 22, 1986 |
| Grant date | Jan 16, 1990 |
| Priority date | — |
| Expiry date | Aug 22, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/2212
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Ureteral stones or calculi may be extracted with a minimum amount of risk of trauma and damage to the ureter by use of the present invention's slipover extraction device. The present invention first positions a guide wire beyond the ureteral stone. An open-end, hollow catheter is then slid coaxially along the guide wire to be also positioned beyond the stone. After the guide wire is removed, a stone basket is slid coaxially within the catheter, where it is also positioned beyond the stone for extraction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.