US4669472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contactless comminution of concrements in the body of a living being
Assignee: Individual
•
Filing: 1985-11-27
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Granted: 1987-06-02
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Expires: 2005-11-27
Abstract
Abstract A device for contactless comminution of concrements in the body of living beings includes a casing with a hollow interior filled with a shock wave transmitting medium; the internal surface configuration is spherically-calotte shaped serving as support for an electric coil covered by insulation which in turn supports a metallic membrane of spherically-calotte shaped configuration, in addition the cavity has a boundary configured as a truncated cone, the apex of the cone coincides with the center of curvature of the membrane. The cavity content is under compression (liquid or solid) and is closed by a coupling member to be placed in abutment with the body of the human being, this coupling member may shift the focal point of the shock waves.
Inventors
- 👤 Wolfgang Eisenmenger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:22
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/22; A61B17/225; A61B17/2251; G; G10; G10K; G10K11/00; G10K11/02; G10K9/00; G10K9/12
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
153 words
A device for contactless comminution of concrements in the body of living beings including a casing with a hollow interior and cavity filled with a shock wave transmitting medium and having an internal surface being spherical-calotte shaped and serving as support for an electric coil there being a correspondingly curved insulation on the coil and a metallic membrane of correspondingly calotte shaped configuration held on said insulation layer, there being means for providing an electric current pulse or pulses to said coil the improvement comprising: said cavity having in addition a boundary surface being configured as a truncated cone and extending from an edge zone of the calotte shaped surface and wherein a center of curvature of said membrane coincides with the apex of said cone, in combination with a covering enclosure and coupling member for said cavity providing coupling function to be placed in abutment with the body of said human being.
Claim 2
Independent Claim
153 words
A device for contactless comminution of concrements in the body of living beings including a casing with a hollow interior and cavity filled with a shock wave transmitting medium and having an internal surface being spherical-calotte shaped and serving as support for an electric coil there being a correspondingly curved insulation on the coil and a metallic membrane of correspondingly calotte shaped configuration held on said insulation layer, there being means for providing an electric current pulse or pulses to said coil the improvement comprising: said cavity having in addition a boundary surface being configured as a truncated cone and extending from an edge zone of the calotte shaped surface and wherein a center of curvature of said membrane coincides with the apex of said cone, in combination with a covering enclosure and coupling member for said cavity providing coupling function to be placed in abutment with the body of said human being.
Claim 3
Dependent Claim
30 words
The improvement as in claim 1 wherein the casing portion delineating said truncated cone at least in the immediate vicinity thereof is made of a material with high acoustic impedance.
Claim 4
Dependent Claim
11 words
The improvement as in claim 2 said material being stainless steel.
Claim 5
Dependent Claim
21 words
The improvement as in claim 1 wherein said cavity is filled with a pressurized medium said medium having a nonlinear compressibility.
Claim 6
Dependent Claim
10 words
The improvement as in claim 4 said medium being water.
Claim 7
Dependent Claim
16 words
The improvement as in claim 4 said medium having a low modulus of shear or torsion.
Claim 8
Dependent Claim
12 words
The improvement as in claim 6 said medium being rubber elastic body.
Claim 9
Dependent Claim
18 words
The improvement as in claim 1 wherein said coupling member has a low modulus of shear or torsion.
Claim 10
Dependent Claim
15 words
The improvement as in claim 8 wherein said coupling member is a rubber elastic material.
Claim 11
Dependent Claim
19 words
The improvement as in claim 1 wherein said coupling member modifies focusing of shock waves produced by the membrane.
Claim 12
Dependent Claim
22 words
The improvement as in claim 10 said coupling member where facing said cavity having a surface of rotational symmetry and hyperboloid configuration.
Claim 13
Dependent Claim
21 words
The improvement as in claim 1 wherein said coupling member has a surface facing the cavity being concentric with said membrane.
Claim 14
Dependent Claim
17 words
The improvement as in claim 1 wherein said coupling member at least partially projects into that cavity.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-06-01 | 1990-12-01 | 1991-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-01 | 1994-12-01 | 1995-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-01 | 1998-12-01 | 1999-06-02 | $7700.00 | Window Closed / Lapsed |