Phantom kidney stone system
US5014686A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 31, 1989 |
| Grant date | May 14, 1991 |
| Priority date | — |
| Expiry date | Aug 31, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/00721
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The phantom kidney stone system for use with a commercial lithotripsy system includes a phantom kidney stone which simulates a human kidney stone and is suspended into the field of operation of the commerical lithotripsy system. The system also includes a trigger which is connected to receive a shock wave signal from the lithotripter which is representative of a shock wave output from the lithotripter. The trigger generates a trigger signal in response to the signal from the lithotripter. A counter is connected to receive the trigger signal and counts the number of trigger signals which is representative of the number of shock waves output from the lithotripter. A detection circuit is connected to the phantom kidney stone and produces a signal proportional to the detected size of the stone at a given point in time and compares the detected size of the stone to a predetermined reference size indicative of a condition wherein the stone would be crushed. The detection circuit generates an output signal at a time when the detected size of the stone is less than the reference size. A processor is connected to receive the output signal from the detection circuit and is connected tothe co…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.