US4936291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrement locating apparatus utilizing X-rays and ultrasonic detectors
Assignee: Dornier Medizintechnik GmbH
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Filing: 1985-07-10
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Granted: 1990-06-26
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Expires: 2005-07-10
Abstract
Abstract The present invention relates to the locating of concrements in the body of living beings for the purposes of determing where the focal point of a shock wave reflector has to be positioned so that it may comminute the concrement, and more particularly the invention relates to a system for locating concrements under utilization of X-rays in combination with an ultrasonic device.
Inventors
- 👤 Bernd Forssmann
- 👤 Hans-Heinrich Gerth
- 👤 Othmar Wess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:05
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/12; A61B17/00; A61B17/22; A61B17/225; A61B17/2256; A61B8/00; A61B8/08; A61B8/0833
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
133 words
In an apparatus for non-invasive comminution of concrements in living beings by means of a shock wave source and a reflector reconcentrating shock waves into a focal point, the improvement for locating and tracking the concrement in relation to said focal point, comprising: two locating systems one being an ultrasonic system, the other one being an X-ray system; means for correlating the two locating systems such that in each of the imaging systems a reference point representing a center beam of the respective other system is introduced to become visually ascertainable, and to render visible the imaging plane of the respective other system, the two object planes being oriented at right angles to each other; and means for providing a visual representation of said focal point in each of the two imaging systems.
Claim 2
Dependent Claim
133 words
In an apparatus for non-invasive comminution of concrements in living beings by means of a shock wave source and a reflector reconcentrating shock waves into a focal point, the improvement for locating and tracking the concrement in relation to said focal point, comprising: two locating systems one being an ultrasonic system, the other one being an X-ray system; means for correlating the two locating systems such that in each of the imaging systems a reference point representing a center beam of the respective other system is introduced to become visually ascertainable, and to render visible the imaging plane of the respective other system, the two object planes being oriented at right angles to each other; and means for providing a visual representation of said focal point in each of the two imaging systems.
Claim 3
Dependent Claim
14 words
Apparatus as in claim 1, said ultrasonic system being rotatable about its center axis.
Claim 4
Dependent Claim
18 words
Apparatus as in claim 1, said ultrasonic system being rotatable about a center axis of the X-ray system.
Claim 5
Dependent Claim
24 words
Apparatus as in claim 1, said ultrasonic system being rotatable about an axis of rotational symmetry of said reflector running through said focal point.
Claim 6
Dependent Claim
47 words
Apparatus as in claim 1, wherein the center beam of the X-ray system is oriented to run in an ultrasonic locating plane as defined by the ultrasonic system, a representation of said locating plane being introduced to be visible in the imaging system of the X-ray system.
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) | 1993-06-25 | 1993-12-25 | 1994-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-25 | 1997-12-25 | 1998-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-25 | 2001-12-25 | 2002-06-26 | $7700.00 | Window Closed / Lapsed |