US4489726A
Expired / Lapsed
US
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Apparatus and method for qualitatively selecting between signals representative of a physiological characteristic
Assignee: Corometrics Medical Systems Inc
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Filing: 1981-11-05
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Granted: 1984-12-25
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Expires: 2001-11-05
Abstract
Abstract Apparatus and method for continuously monitoring the fetal heart rate simultaneously using ultrasonic and electrocardiographic signals. The signals are continuously processed to provide an improved output fetal heart rate indication in terms of better continuity and accuracy.
Inventors
- 👤 Paul Epstein
- 👤 John S. Ballas, Jr.
- 👤 John J. Mandler, Jr.
- 👤 Joseph M. Van Horn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:18
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/02; A61B5/024; A61B5/02411; A61B5/43; A61B5/4306; A61B5/4343; A61B5/4362; A61B8/00; A61B8/02; A61B8/08; A61B8/0866
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
94 words
Apparatus for generating an output signal from a biological object comprising: means for producing a first input signal representative of a selected physiological characteristic of said object; means for producing a second input signal also representative of said selected physiological characteristic of said object; means responsive to both of said input signals for producing an intermediate signal indicative of the representative quality of each input signal; selecting means for selecting one of said two input signals in response to said intermediate signal; and means for processing said selected signal to produce said output signal.
Claim 2
Dependent Claim
94 words
Apparatus for generating an output signal from a biological object comprising: means for producing a first input signal representative of a selected physiological characteristic of said object; means for producing a second input signal also representative of said selected physiological characteristic of said object; means responsive to both of said input signals for producing an intermediate signal indicative of the representative quality of each input signal; selecting means for selecting one of said two input signals in response to said intermediate signal; and means for processing said selected signal to produce said output signal.
Claim 3
Dependent Claim
35 words
An apparatus as in claim 1, wherein said intermediate signal has a plurality of values and said selecting means selects one of said two input signals in accordance with the value of said intermediate signal.
Claim 4
Independent Claim
80 words
A method of generating an output signal from a biological object comprising the steps of: producing a first input signal representative of a selected physiological characteristic of said object; producing a second input signal also representative of said selected physiological characteristic of said object; producing an intermediate signal indicative of the representative quality of each input signal; selecting one of said two input signals in response to said intermediate signal; and processing said selected signal to produce said output signal.
Claim 5
Independent Claim
80 words
A method of generating an output signal from a biological object comprising the steps of: producing a first input signal representative of a selected physiological characteristic of said object; producing a second input signal also representative of said selected physiological characteristic of said object; producing an intermediate signal indicative of the representative quality of each input signal; selecting one of said two input signals in response to said intermediate signal; and processing said selected signal to produce said output signal.
Claim 6
Dependent Claim
35 words
A method as in claim 3; wherein said intermediate signal has a plurality of values and said selection of one of said two input signals is in accordance with the value of said intermediate signal.
References Cited (Backward Citations)
US3554187A
Cited
US3561430A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-12-25 | 1988-06-25 | 1988-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-25 | 1992-06-25 | 1992-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-25 | 1996-06-25 | 1996-12-25 | $7700.00 | Window Closed / Lapsed |