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Patent US5123418A successfully refreshed from Google Patents.
US5123418A
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US
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Micro-echographic probe for ultrasound collimation through a deformable surface
Assignee: Centre National de la Recherche Scientifique
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Filing: 1990-02-27
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Granted: 1992-06-23
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Expires: 2010-02-27
Abstract
Abstract The present invention relates to a micro-echographic probe for ultrasound collimation through a deformable surface. The probe comprises at one end an ultrasonic wave beam transducer, disposed, for example, in the form of a spherical cap, so that said beam converges in a focus (A), which focus is also that of the other end of the monolithic body and which is the contact tip, so that the beam which penetrates in the body to be analyzed is collimated. The ultrasonic waves are preferably at a frequency equal to at least 50 MHz.
Inventors
- 👤 Jean-Marc Saurel
- 👤 Jacques Attal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:14
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/18; G10K11/26; G10K11/30; G01; G01H; G01H3/00; G01H3/10; G01H3/12
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
121 words
In a micro-echographic probe for collimation of ultrasonic waves into a deformable surface of a material, the probe having, at one end, a transducer for providing a beam of said ultrasonic waves and, generally at an opposite end, a convex tip for contact with said surface and defining an opening through which said ultrasonic waves enter said deformable surface and material, the improvement wherein: said ultrasonic waves have a frequency equal to at least 20 MHz; and said transducer is disposed directly on one end of a principal body that is continuous up to a body tip generally at said convex tip and such that said waves converge in said principal body from said transducer towards a focus in said material.
Claim 2
Dependent Claim
121 words
In a micro-echographic probe for collimation of ultrasonic waves into a deformable surface of a material, the probe having, at one end, a transducer for providing a beam of said ultrasonic waves and, generally at an opposite end, a convex tip for contact with said surface and defining an opening through which said ultrasonic waves enter said deformable surface and material, the improvement wherein: said ultrasonic waves have a frequency equal to at least 20 MHz; and said transducer is disposed directly on one end of a principal body that is continuous up to a body tip generally at said convex tip and such that said waves converge in said principal body from said transducer towards a focus in said material.
Claim 3
Dependent Claim
21 words
The probe of claim 1, wherein said transducer provides said ultrasonic waves at a frequency equal to at least 50 MHz.
Claim 4
Dependent Claim
25 words
The probe of claim 1, wherein a diameter of said opening is at the most equal to three times the wavelength of said ultrasonic waves.
Claim 5
Dependent Claim
26 words
The probe of claim 1, wherein all surfaces of said principal body between said one and opposite ends thereof are coated with an acoustic absorbent material.
Claim 6
Dependent Claim
31 words
The probe of claim 1, wherein said convex tip comprises a layer of an adaptation material having a thickness of a quarter wavelength of said ultrasonic waves on said body tip.
Claim 7
Dependent Claim
45 words
The probe of claim 1, wherein said principal body further comprises a flat acoustic reflector disposed for deviating said ultrasonic waves from said transducer to said convex tip, said convex tip making a determined angle β with respect to an axis of the principal body.
Claim 8
Dependent Claim
15 words
The probe of claim 1, wherein said one end of said principal body is spherical.
Claim 9
Dependent Claim
22 words
The probe of claim 7, wherein the angular half-section α of said spherical one end of said principal body is about 50°.
Claim 10
Dependent Claim
24 words
The probe of claim 7, wherein said transducer is disposed only on a half portion of said spherical one end of said principal body.
Claim 11
Dependent Claim
34 words
The probe of claim 1, wherein said transducer comprises a lens constituted by regularly space concentric rings for supply with signals of different phases and said one end of said principal body is flat.
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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) | 1995-06-23 | 1995-12-23 | 1996-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-23 | 1999-12-23 | 2000-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-23 | 2003-12-23 | 2004-06-23 | $7700.00 | Window Closed / Lapsed |