Endoscopic lithotripsy system
US5449363A · kind A · utility
75Cited by
18References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 6, 1994 |
| Grant date | Sep 12, 1995 |
| Priority date | — |
| Expiry date | May 6, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/922
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An endoscopic lithotriptor including an elongated, flexible stone impacting member in the form of a wire whose distal end is brought against a stone to be broken and whose proximal end is adapted to be periodically struck by a hammer element. The hammer element is pneumatically driven by a linear jet of air causing it to swing through an arc about a pivot to impact an anvil affixed to the wire and oriented tangentially to the arc swept out by the hammer. The pneumatic chamber structure in which the hammer is pivotally mounted is designed to maximize the angular velocity reached by the hammer before impacting the anvil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.