US3942531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for breaking-up, without contact, concrements present in the body of a living being
Assignee: Dornier System GmbH
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Filing: 1974-09-11
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Granted: 1976-03-09
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Expires: 1994-09-11
Abstract
Abstract This invention relates to an apparatus for breaking-up, without contact, concrements present in the body of a living being, which comprises waveguide means filled with a liquid medium and adapted to be placed against said body, and means for generating shock waves within said waveguide means.
Inventors
- 👤 Gunter Hoff
- 👤 Armin Behrendt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:39
CPC Classifications
G; G10; G10K; G10K15/00; G10K15/04; G10K15/043; A; A61; A61B; A61B17/00; A61B17/22; A61B17/22004; A61B2017/22027
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
131 words
An apparatus for breaking-up, without contact, a concrement present in the body of a living being, which comprises waveguide means having a circular cross-section and elliptical walls in longitudinal cross-section, diaphragm means on an end face of said waveguide means and adapted to be placed against said body, liquid means filling said waveguide means, and spark discharge means in said waveguide means and located at one focus of the ellipse formed by said elliptical walls, whereby shock waves generated by said spark discharge means are reflected and focused by the walls of said waveguide means, pass through said liquid, said diaphragm means, and tissue of said body, and are adapted to impinge upon and break-up a concrement located at the other focal point of the ellipse formed by said elliptical walls.
Claim 2
Independent Claim
131 words
An apparatus for breaking-up, without contact, a concrement present in the body of a living being, which comprises waveguide means having a circular cross-section and elliptical walls in longitudinal cross-section, diaphragm means on an end face of said waveguide means and adapted to be placed against said body, liquid means filling said waveguide means, and spark discharge means in said waveguide means and located at one focus of the ellipse formed by said elliptical walls, whereby shock waves generated by said spark discharge means are reflected and focused by the walls of said waveguide means, pass through said liquid, said diaphragm means, and tissue of said body, and are adapted to impinge upon and break-up a concrement located at the other focal point of the ellipse formed by said elliptical walls.
Claim 3
Dependent Claim
23 words
An apparatus according to claim 1 in which said diaphragm means is adapted to be placed on said body in an air-tight manner.
Claim 4
Dependent Claim
12 words
An apparatus according to claim 1 in which said liquid is water.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-09 | 1979-09-08 | 1980-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-09 | 1983-09-08 | 1984-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-09 | 1987-09-08 | 1988-03-09 | $7700.00 | Window Closed / Lapsed |