Patent US5144953A successfully refreshed from Google Patents.
US5144953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lithotriptor with x-ray alignment system
Assignee: Richard Wolf GmbH
•
Filing: 1989-09-18
•
Granted: 1992-09-08
•
Expires: 2009-09-18
Abstract
Abstract The focus of a lithotriptor comprising a transducer for generating focused ultrasonic shock waves is adapted for alignment on a concretion or tissue to be destroyed. The transducer is connected to an image-forming diagnostic X-ray system for locating the concretion or tissue, and comprising an X-ray emitter and an image intensifier disposed on a pivotable frame. The transducer is connected to the X-ray emitter, and the X-ray emitter is disposed at the center of the transducer, so that the emission axes of the transducer and the X-ray emitter coincide.
Inventors
- 👤 Helmut Wurster
- 👤 Werner Krauss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:22
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/22; A61B17/225; A61B17/2251; A61B17/22004; A61B17/2255
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
171 words
A lithotriptor comprising a transducer for generating focused ultrasonic shock waves for destroying an object in a patient's body; means for aligning the focus of the transducer on said object; a frame for supporting said transducer; an image-forming diagnostic X-ray system for locating said object, said X-ray system comprising an X-ray emitter and an image intensifier spaced therefrom, and disposed on said frame, said frame being pivotable about a pivotal axis in a plurality of image planes, for location of said object, wherein the X-ray emitter is connected to said transducer and disposed centrally thereof with the emission axis of said transducer coinciding with that of the X-ray emitter; means containing a liquid coupling medium for the transmission of ultrasonic shock waves generated by said transducer to the patient's body; and a balloon disposed in said coupling medium and which is inflatable by means of a gas to displace said medium in a region encompassing the entire length of the axis of the X-ray emission which passes through said coupling medium.
Claim 2
Dependent Claim
171 words
A lithotriptor comprising a transducer for generating focused ultrasonic shock waves for destroying an object in a patient's body; means for aligning the focus of the transducer on said object; a frame for supporting said transducer; an image-forming diagnostic X-ray system for locating said object, said X-ray system comprising an X-ray emitter and an image intensifier spaced therefrom, and disposed on said frame, said frame being pivotable about a pivotal axis in a plurality of image planes, for location of said object, wherein the X-ray emitter is connected to said transducer and disposed centrally thereof with the emission axis of said transducer coinciding with that of the X-ray emitter; means containing a liquid coupling medium for the transmission of ultrasonic shock waves generated by said transducer to the patient's body; and a balloon disposed in said coupling medium and which is inflatable by means of a gas to displace said medium in a region encompassing the entire length of the axis of the X-ray emission which passes through said coupling medium.
Claim 3
Dependent Claim
41 words
A lithotriptor as claimed in claim 1 wherein said focus is the isocenter for the pivotal movement of the X-ray system, an imaginary extension of the pivotal axis of the frame intersecting said focus in each pivotal position of said frame.
Claim 4
Dependent Claim
28 words
A lithotriptor as claimed in claim 1 wherein at least one ultrasonic transducer for locating said object is connected to said ultrasonic transducer for generating said shock waves.
Claim 5
Dependent Claim
36 words
A lithotriptor as claimed in claim 3 further comprising gas evacuation means for at least partially deflating said balloon so that ultrasonic waves emitted by said transducers can enter the patient's body unobstructed by said balloon.
Claim 6
Dependent Claim
20 words
A lithotriptor as claimed in claim 3 wherein said locating transducer is displaceable along its longitudinal axis toward said focus.
Claim 7
Dependent Claim
35 words
A lithotriptor as claimed in claim 1 wherein said means for aligning comprise means for moving said X-ray system and said transducer along X, Y and Z coordinates, thereby aligning said focus on said object.
Claim 8
Dependent Claim
55 words
A lithotriptor as claimed in claim 1 wherein said means for aligning comprise drive means engaging a column and being pivotable thereabout for moving said frame in the direction of X and Z coordinates, and for moving said frame about said pivotal axis thereof, said X-ray system and said transducer being disposed on said frame.
References Cited (Backward Citations)
US3803417A
Cited
US3891845A
Cited
US3993906A
Cited
DE2913251A1
Cited
US4705026A
Cited
SU1333322A1
Cited
DE8515656U1
Cited
US4877017A
Cited
DE8528785U1
Cited
DE8534425U1
Cited
US4771787A
Cited
US4821730A
Cited
DE3544628A1
Cited
DE3544707A1
Cited
US4819257A
Cited
EP0264738A1
Cited
US4928672A
Cited
US4984565A
Cited
US5060634A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-09-08 | 1996-03-09 | 1996-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-08 | 2000-03-09 | 2000-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-08 | 2004-03-09 | 2004-09-08 | $7700.00 | Window Closed / Lapsed |