Patent · US Expired

Apparatus for comminuting concretions in bodies of living beings

US4530358A · kind A · utility

31Cited by

6References

4Claims

0Family size

Assignee

Dornier System GmbH

Inventors

Bernd Forssmann · Friedrichshafen, DE
Othmar Wess · Munich, DE
Hendrik Zech · Überlingen, DE
Christian Chaussy · Privas, FR

Key dates

Filing date	Mar 3, 1983
Grant date	Jul 23, 1985
Priority date	—
Expiry date	Mar 3, 2003

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61B2017/2253
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

An apparatus for comminuting concretions in bodies of living beings with a focusing chamber forming part of an ellipsoid of revolution wherein shock waves can be generated by spark discharge at one of the foci, the body being prone in a tub filled with a liquid, where PA1 (a) the focusing chamber is sealed by a high-strength membrane, PA1 (b) the focusing chamber is filled with an extensively degassed liquid, PA1 (c) the liquid is under increased pressure, and PA1 (d) the liquid is made to circulate, the liquid being evacuated at a location of the focusing chamber as high as possible, and a liquid free of gas bubbles being replenished into the focusing chamber.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.