US3824988A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasound doppler applicator
Assignee: Siemens AG
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Filing: 1973-01-30
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Granted: 1974-07-23
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Expires: 1993-01-30
Abstract
Abstract An ultrasound Doppler applicator is used for determining the movement of internal body parts the position of which is variable relatively to the applicator, particularly fetal heart movement. The invention is particularly characterized by the provision of a plurality of ultra sound sending oscillators and a plurality of ultra sound receiving oscillators carried by a ring and distributed over the entire ring.
Inventors
- 👤 R Soldner
- 👤 G Naefe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:55
CPC Classifications
A; A61; A61B; A61B8/00; A61B8/42; A61B8/4272; A61B8/4281; A61B5/00; A61B5/03; A61B5/033; A61B8/02; A61B8/08; A61B8/0866; A61B8/48; A61B8/488
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
54 words
An ultrasound Doppler applicator for determining the movements of internal body parts the locations of which are moveable relatively to the applicator, particularly fetal heart movements, said applicator comprising a ring and a plurality of ultrasound sending oscillators and ultrasound receiving oscillators carried by said ring, said oscillators being distributed throughout the entire ring.
Claim 2
Dependent Claim
54 words
An ultrasound Doppler applicator for determining the movements of internal body parts the locations of which are moveable relatively to the applicator, particularly fetal heart movements, said applicator comprising a ring and a plurality of ultrasound sending oscillators and ultrasound receiving oscillators carried by said ring, said oscillators being distributed throughout the entire ring.
Claim 3
Dependent Claim
30 words
An applicator in accordance with claim 1, wherein the individual sending and receiving oscillators are mounted alternately upon said ring along a circle concentric to the center of said ring.
Claim 4
Dependent Claim
15 words
An applicator in accordance with claim 2, wherein the distances between the applicators are equal.
Claim 5
Dependent Claim
36 words
An applicator in accordance with claim 3, wherein there are three sending oscillators and three receiving oscillators, each oscillator having a diameter of substantially 8 mm, said ring having an average diameter of substantially 50 mm.
Claim 6
Dependent Claim
17 words
An applicator in accordance with claim 4, wherein the width of said ring is substantially 10 mm.
Claim 7
Dependent Claim
16 words
An applicator in accordance with claim 1, wherein said ring comprises hollow spaces receiving said oscillators.
Claim 8
Dependent Claim
20 words
An applicator in accordance with claim 1, comprising means connecting the individual sending oscillators and receiving oscillators electrically in parallel.
Claim 9
Dependent Claim
17 words
An applicator in accordance with claim 1, wherein said ring consists of an artificial material, preferably polystyrol.
Claim 10
Dependent Claim
14 words
An applicator in accordance with claim 1, wherein said ring is a disc ring.
Claim 11
Dependent Claim
26 words
An applicator in accordance with claim 1, comprising a pressure changer fitting into the interior of said ring for receiving a tocogram of an expectant mother.
Claim 12
Dependent Claim
16 words
An applicator in accordance with claim 10, wherein said ring encloses and holds said pressure changer.
Claim 13
Dependent Claim
22 words
An applicator in accordance with claim 10, wherein said pressure changer has a casing, said ring being a part of said casing.
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) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |