US4664111A
Expired / Lapsed
US
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Apparatus for producing time-staggered shock waves
Assignee: Siemens AG
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Filing: 1986-01-21
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Granted: 1987-05-12
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Expires: 2006-01-21
Abstract
Abstract A shock wave tube generates a plane shock wave which is divided into two partial waves by means of a splitting device, such as a cone. Adjacent the cone are first and second reflectors. The reflectors have different parabolic curvatures and different distances from the cone. Their respective foci coincide at a common point, where a concrement is located. The partial waves require different transit times to reach the common focus point. Time-staggered shock waves are obtained in the concrement with the use of a single shock wave tube.
Inventors
- 👤 Helmut Reichenberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:18
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/22; A61B17/225; A61B17/2251; A61B17/22004; G; G10; G10K; G10K11/00; G10K11/18; G10K11/26; G10K11/28
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
52 words
Apparatus for producing time-staggered shock waves, comprising: means for producing a planar ultrasonic shock wave; ultrasonic beam splitting means for splitting said shock wave into at least two secondary ultrasonic shock waves; and reflecting means for focusing all said secondary shock waves upon a common focal region along paths of unequal lengths.
Claim 2
Dependent Claim
52 words
Apparatus for producing time-staggered shock waves, comprising: means for producing a planar ultrasonic shock wave; ultrasonic beam splitting means for splitting said shock wave into at least two secondary ultrasonic shock waves; and reflecting means for focusing all said secondary shock waves upon a common focal region along paths of unequal lengths.
Claim 3
Dependent Claim
19 words
The apparatus of claim 1, wherein the beam splitting means comprises a cone of a material which reflects ultrasound.
Claim 4
Dependent Claim
20 words
The apparatus of claim 2 wherein said cone is a 90° cone with its apex pointing towards said producing means.
Claim 5
Dependent Claim
12 words
The apparatus of claim 2, wherein said cone is made of brass.
Claim 6
Dependent Claim
24 words
The apparatus of claim 1, wherein said reflecting means comprises first and second parabolic reflectors disposed on opposite sides of said beam splitting means.
Claim 7
Dependent Claim
29 words
The apparatus of claim 5, wherein a one of the parabolic reflectors is detachably secured to the apparatus and is replacable with another parabolic reflector of a different shape.
Claim 8
Dependent Claim
68 words
Apparatus for producing time-staggered shock waves, comprising: means for producing a planar ultrasonic shock wave; ultrasonic beam splitting means for splitting ultrasound shock waves into at least two secondary ultrasonic shock waves; and reflecting means for focusing all said secondary shock waves upon a common focal region along paths of unequal lengths, said reflecting means including means for adjusting the length of at least one of said paths.
Claim 9
Dependent Claim
68 words
Apparatus for producing time-staggered shock waves, comprising: means for producing a planar ultrasonic shock wave; ultrasonic beam splitting means for splitting ultrasound shock waves into at least two secondary ultrasonic shock waves; and reflecting means for focusing all said secondary shock waves upon a common focal region along paths of unequal lengths, said reflecting means including means for adjusting the length of at least one of said paths.
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) | 1990-05-11 | 1990-11-10 | 1991-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-11 | 1994-11-10 | 1995-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-11 | 1998-11-10 | 1999-05-12 | $7700.00 | Window Closed / Lapsed |