US5116343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for disintegrating concretions disposed in body cavities
Assignee: Richard Wolf GmbH
•
Filing: 1990-08-28
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Granted: 1992-05-26
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Expires: 2010-08-28
Abstract
Abstract A device is disclosed for the disintegration of concretions in body cavities. The device comprises at least one piezoelectric transducer element, for connection to a generator. The transducer element is connected between a reflector and a horn. Ultrasonic waves generated by the transducer element are directed by means of a sonotrode, to a concretion to be destroyed. At least the horn is provided with surface depressions which do not run parallel to its axis of symemtry, for the generation of transverse and rotational oscillations.
Inventors
- 👤 Felix Ams
- 👤 Ulf Zanger
- 👤 Ulrich Bolg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:51
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/22; A61B17/22004; A61B17/22012; B; B06; B06B; B06B3/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
80 words
A device for disintegrating concretions disposed in body cavities, the device comprising: a reflector; a horn having a longitudinal axis an ultrasonic transducer element connected between the reflector and the horn; and a sonotrode connected to the horn for directing ultrasonic waves generated by said transducer element to a concretion to be disintegrated; wherein the horn is provided with surface depression means which extend transversely of the longitudinal axis for generating transverse and rotational oscillations in addition to longitudinal oscillations.
Claim 2
Independent Claim
80 words
A device for disintegrating concretions disposed in body cavities, the device comprising: a reflector; a horn having a longitudinal axis an ultrasonic transducer element connected between the reflector and the horn; and a sonotrode connected to the horn for directing ultrasonic waves generated by said transducer element to a concretion to be disintegrated; wherein the horn is provided with surface depression means which extend transversely of the longitudinal axis for generating transverse and rotational oscillations in addition to longitudinal oscillations.
Claim 3
Dependent Claim
50 words
A device as claimed in claim 1, wherein the sonotrode is provided at a distal end thereof with slits extending transversely of its axis of symmetry, the length of each slit being approximately λ/4, where λ is the wave length of the transverse oscillations generated by said surface depression means.
Claim 4
Dependent Claim
25 words
A device as claimed in claim 2, wherein the sonotrode comprises sheets of material and wherein said material is provided with indentations between said slits.
Claim 5
Dependent Claim
23 words
A device as claimed in claim 1, wherein the sonotrode and the horn are made of material having substantially the same acoustic impedance.
Claim 6
Dependent Claim
17 words
A device as claimed in claim 4, wherein the horn and the sonotrode are made of titanium.
Claim 7
Dependent Claim
21 words
A device as claimed in claim 4, wherein the horn is made of duralumin and the sonotrode is made of titanium.
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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) | 1995-05-26 | 1995-11-25 | 1996-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-26 | 1999-11-25 | 2000-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-26 | 2003-11-25 | 2004-05-26 | $7700.00 | Window Closed / Lapsed |