Patent US4622969A successfully refreshed from Google Patents.
US4622969A
Expired / Lapsed
US
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Shock wave matching in therapeutic equipment
Assignee: Dornier System GmbH
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Filing: 1984-06-06
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Granted: 1986-11-18
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Expires: 2004-06-06
Abstract
Abstract An apparatus for the comminution of concrements such as kidney stones, and including a source of shock waves partially surrounded by an ellipsoidal reflector, is improved in that the open end of the reflector for sound wave transmission is additionally defined by a plurality of sound attentuating rings diminishing in internal diameter with distance from the source of shock waves; additional features provide for an overall increase in specific weight of these rings; the transmission of x-rays through the equipment is separately controlled.
Inventors
- 👤 Bernd Forssmann
- 👤 Christian Chaussy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:51
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/002
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
198 words
In an apparatus for the comminution of concrements in the body of a human being which includes a source for shock waves situated in a first focal point of an ellipsoidal reflector, the apparatus to be positioned such that a second focal point of said reflector is located in the concrement to be destroyed, the improvement of a structure for matching the shock wave field produced upon production of a shock wave in the firstmentioned focal point to the body of the patient, particularly the body of a child, comprising: said reflector having a particular opening; and an assembly which includes a plurality of concentric shock wave attenuating exchangeable rings made of foam and being removably placed at said opening and in superimposing relationship and having inner openings that decrease with axial distance of the rings from the first focal point,said rings providing restriction for shock wave emanation from the opening of the reflector and as now defined by the openings of the rings, said assembly further including a means for weight increasing, having a specific weight so that the assembly of foam rings as a whole have a specific weight larger than the specific weight of water.
Claim 2
Dependent Claim
198 words
In an apparatus for the comminution of concrements in the body of a human being which includes a source for shock waves situated in a first focal point of an ellipsoidal reflector, the apparatus to be positioned such that a second focal point of said reflector is located in the concrement to be destroyed, the improvement of a structure for matching the shock wave field produced upon production of a shock wave in the firstmentioned focal point to the body of the patient, particularly the body of a child, comprising: said reflector having a particular opening; and an assembly which includes a plurality of concentric shock wave attenuating exchangeable rings made of foam and being removably placed at said opening and in superimposing relationship and having inner openings that decrease with axial distance of the rings from the first focal point,said rings providing restriction for shock wave emanation from the opening of the reflector and as now defined by the openings of the rings, said assembly further including a means for weight increasing, having a specific weight so that the assembly of foam rings as a whole have a specific weight larger than the specific weight of water.
Claim 3
Dependent Claim
11 words
The improvement as in claim 1, said rings having rectangular cross-sections.
Claim 4
Dependent Claim
22 words
The improvement as in claim 2, said rectangular cross-sections having increasing long rectangular sides respectively with distance from said first-mentioned focal point.
Claim 5
Dependent Claim
13 words
The improvement as in claim 1, said rings having a parallelepiped like cross-sections.
Claim 6
Dependent Claim
29 words
The improvement as in claim 1, said parallelepiped like cross-sections together defining a conical internal surfaces such that said internal conical surfaces are all situated on a common cone.
Claim 7
Dependent Claim
15 words
The improvement as in claim 1, there being weight increasing annuli interposed between said rings.
Claim 8
Dependent Claim
16 words
Improvement as in claim 1, including means for centering the rings with respect to each other.
Claim 9
Dependent Claim
21 words
Improvement as in claim 1, including an axial extension of said ring to obtain self-centering positioning with respect to said reflector.
Claim 10
Dependent Claim
17 words
The improvement as in claim 1, said ring including at least one cutout for accommodating additional equipment.
Claim 11
Dependent Claim
20 words
The improvement as in claim 1, wherein means are provided for at least partially blocking x-ray transmission through the ring.
Claim 12
Dependent Claim
17 words
The improvement as in claim 1, said reflector being enveloped in a jacket of sound attenuating material.
Claim 13
Dependent Claim
15 words
The improvement as in claim 1, wherein said ring has an internal contour being non-circular.
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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) | 1989-11-17 | 1990-05-19 | 1990-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-17 | 1994-05-19 | 1994-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-17 | 1998-05-19 | 1998-11-18 | $7700.00 | Window Closed / Lapsed |