Patent US4774947A successfully refreshed from Google Patents.
US4774947A
Expired / Lapsed
US
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Lithotripsy probe
Assignee: Richard Wolf GmbH
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Filing: 1987-07-16
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Granted: 1988-10-04
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Expires: 2007-07-16
Abstract
Abstract A lithotripsy probe for stone disintegration, comprising a pair of conductors insulated from one another and extending through the probe. The conductors are surrounded by a thin metal sleeve over a distal length of the probe, and the metal sleeve is provided at one point, which is situated at a distance from the distal extremity of the probe, with at least one gap or perforation in which engages an overlying shrink-on tube to immobilize the sleeve on the two insulated conductors.
Inventors
- 👤 Ernst Falk
- 👤 Siegfried Bauer
- 👤 Helmut Wurster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:26
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/22; A61B17/22004; A61B17/22012; A61B17/22022
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
79 words
A lithotripsy probe for stone disintegration, said probe comprising two conductors insulated from one another and extending axially through the probe, a thin metal sleeve member surrounding a distal length of the probe, said sleeve member being provided with at least one aperture spaced from the distal extremity of the member, and a shrink-on tube surrounding the sleeve member, said shrink-on tube engaging the two conductors through said aperture to secure the sleeve member onto the two insulated conductors.
Claim 2
Dependent Claim
79 words
A lithotripsy probe for stone disintegration, said probe comprising two conductors insulated from one another and extending axially through the probe, a thin metal sleeve member surrounding a distal length of the probe, said sleeve member being provided with at least one aperture spaced from the distal extremity of the member, and a shrink-on tube surrounding the sleeve member, said shrink-on tube engaging the two conductors through said aperture to secure the sleeve member onto the two insulated conductors.
Claim 3
Dependent Claim
14 words
A lithotripsy probe according to claim 1, wherein said aperture comprises a helical excision.
Claim 4
Dependent Claim
18 words
A lithotripsy probe according to claim 1, wherein said sleeve has two helical excisions to form two apertures.
Claim 5
Dependent Claim
58 words
A lithotripsy probe according to claim 1, wherein said sleeve member is formed by a spring comprising a first set of turns wound closely around the distal extremity and in continuation thereof, and a second set of turns having an increased pitch relative to said first set to definine said aperture between successive turns of said second set.
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) | 1991-10-04 | 1992-04-04 | 1992-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-04 | 1996-04-04 | 1996-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-04 | 2000-04-04 | 2000-10-04 | $7700.00 | Window Closed / Lapsed |