Patent US5117832A successfully refreshed from Google Patents.
US5117832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curved rectangular/elliptical transducer
Assignee: THS International Inc
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Filing: 1991-08-20
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Granted: 1992-06-02
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Expires: 2011-08-20
Abstract
Abstract An ultrasound transducer for use in an ultrasound visualization and therapy system or the like. The ultrasound transducer is characterized as a single crystal transducer having a radiating surface which conforms generally in shape to a segment of a surface of a solid of revolution of a conic section, the radiating surface having first and second edges which are generally parallel.
Inventors
- 👤 Narendra T. Sanghvi
- 👤 John N. Zink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:00
CPC Classifications
A; A61; A61N; A61N7/00; A61N7/02; G; G10; G10K; G10K11/00; G10K11/18; G10K11/26; G10K11/32; A61N2007/0052
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
37 words
An ultrasound single crystal transducer having a radiating surface which conforms generally in shape to a segment of a surface of a solid of revolution of a conic section, said radiation surface having first and second edges.
Claim 2
Dependent Claim
37 words
An ultrasound single crystal transducer having a radiating surface which conforms generally in shape to a segment of a surface of a solid of revolution of a conic section, said radiation surface having first and second edges.
Claim 3
Dependent Claim
12 words
The transducer of claim 1 wherein the conic section is an ellipse.
Claim 4
Dependent Claim
20 words
The transducer of claim 2 wherein the ellipse is a circle and the solid of revolution is thereby a sphere.
Claim 5
Dependent Claim
25 words
The transducer of claim 3 wherein the first and second edges are equidistantly spaced from a radius of the sphere which defines the radiating surface.
Claim 6
Dependent Claim
26 words
The transducer of claim 4 wherein the transducer further comprises third and fourth edges which extend between the first and second edges at opposite ends thereof.
Claim 7
Dependent Claim
32 words
The transducer of claim 5 wherein the third and fourth edges projected into the plane lie generally on arcs of a second circle whose center lies on the radius of the sphere.
Claim 8
Dependent Claim
38 words
The transducer of one of claims 1 through 3 and 4 through 6 further comprising multiple electrodes on the side thereof opposite the radiating surface, one of the multiple electrodes having a generally circular projection onto the plane.
Claim 9
Dependent Claim
56 words
An ultrasound single crystal transducer having a radiating surface which conforms generally in shape to a segment of a surface of revolution of a conic section, said crystal further having a side opposite said radiating surface, and said crystal further having an edge which defines an ellipse having a major axis longer than its minor axis.
Claim 10
Dependent Claim
56 words
An ultrasound single crystal transducer having a radiating surface which conforms generally in shape to a segment of a surface of revolution of a conic section, said crystal further having a side opposite said radiating surface, and said crystal further having an edge which defines an ellipse having a major axis longer than its minor axis.
Claim 11
Dependent Claim
27 words
The transducer of claim 8 wherein the two arcs are arcs of circles having diameters substantially greater than the length of the minor axis of the ellipse.
Claim 12
Dependent Claim
28 words
The transducer of claim 9 wherein the two arcs are arcs of circles having diameters greater than about twice the length of the minor axis of the ellipse.
Claim 13
Dependent Claim
29 words
The transducer of claim 10 wherein the two arcs are arcs of circles having diameters greater than about 2.5 times the length of the minor axis of the ellipse.
Claim 14
Dependent Claim
12 words
The transducer of claim 11 wherein the conic section is an ellipse.
Claim 15
Dependent Claim
11 words
The transducer of claim 12 wherein the ellipse is a circle.
Claim 16
Dependent Claim
34 words
The transducer of one of claims 8 through 15 further comprising multiple electrodes on the side thereof opposite the radiating surface, one of the multiple electrodes having a generally circular projection onto the plane.
References Cited (Backward Citations)
US2231483A
Cited
US2468301A
Cited
US2567757A
Cited
US4248090A
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US4601539A
Cited
US4718517A
Cited
US4762002A
Cited
US4955365A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-06-02 | 1995-12-02 | 1996-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-02 | 1999-12-02 | 2000-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-02 | 2003-12-02 | 2004-06-02 | $7700.00 | Window Closed / Lapsed |