US3695253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for physiological investigation
Assignee: Individual
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Filing: 1970-06-29
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Granted: 1972-10-03
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Expires: 1990-06-29
Abstract
Abstract Accelerometer transducer apparatus, of the type which is resistive, complete balanced bridge, unbonded strain gage, is positioned in engagement with the chest wall of a subject in the region of the heart. The accelerometer transducer has a primary response in a direction substantially normal to the chest of the subject. Sensing mechanism which senses frequencies in the range of between two and thirty cycles per second is connected to the accelerometer transducer, the signal output thus being a function of the precordial vibrations associated with the chest wall of the subject.
Inventors
- 👤 Harold G Vielhauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:22
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/103; A61B5/11; A61B5/113; A61B5/1135; A61B7/00; A61B7/02; A61B7/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
185 words
Apparatus for providing signals which are a function of precordial vibrations, comprising an accelerometer transducer of the type which is resistive, complete balanced bridge, unbonded strain gage, the accelerometer transducer being directionally sensitive and having a reading of between one times the force of gravity and 6 times the force of gravity, the accelerometer transducer being adapted to engage a portion of the chest of a subject, the accelerometer transducer having a signal output and primary response in a direction substantially normal to a given axis of the accelerometer transducer, the accelerometer transducer adapted to be positioned in engagement with the said portion of the chest of the subject so that the accelerometer transducer moves in a direction substantially normal to said given axis thereof during heart action of the subject, means responsive to the signal output of the accelerometer transducer connected to the accelerometer transducer and sensing frequencies in the range of between 2 and 30 cycles per second, the signal output being a function of the precordial vibrations associated with the chest and being a function of the heart action of the subject.
Claim 2
Dependent Claim
185 words
Apparatus for providing signals which are a function of precordial vibrations, comprising an accelerometer transducer of the type which is resistive, complete balanced bridge, unbonded strain gage, the accelerometer transducer being directionally sensitive and having a reading of between one times the force of gravity and 6 times the force of gravity, the accelerometer transducer being adapted to engage a portion of the chest of a subject, the accelerometer transducer having a signal output and primary response in a direction substantially normal to a given axis of the accelerometer transducer, the accelerometer transducer adapted to be positioned in engagement with the said portion of the chest of the subject so that the accelerometer transducer moves in a direction substantially normal to said given axis thereof during heart action of the subject, means responsive to the signal output of the accelerometer transducer connected to the accelerometer transducer and sensing frequencies in the range of between 2 and 30 cycles per second, the signal output being a function of the precordial vibrations associated with the chest and being a function of the heart action of the subject.
Claim 3
Independent Claim
118 words
The method of determining precordial vibrations of a subject, comprising positioning an accelerometer transducer in engagement with the chest wall of the subject in the region of the heart and determining the output of the accelerometer transducer, the accelerometer transdUcer being of the type known as resistive, complete balanced bridge, unbonded strain gage, the accelerometer transducer having a primary response which is a function of the movement thereof in a direction substantially normal to the chest wall with which the accelerometer transducer is in engagement, the accelerometer transducer producing an output signal which is within the range of between two and thirty cycles per second and which is thus a function of the heart action of the subject.
Claim 4
Independent Claim
118 words
The method of determining precordial vibrations of a subject, comprising positioning an accelerometer transducer in engagement with the chest wall of the subject in the region of the heart and determining the output of the accelerometer transducer, the accelerometer transdUcer being of the type known as resistive, complete balanced bridge, unbonded strain gage, the accelerometer transducer having a primary response which is a function of the movement thereof in a direction substantially normal to the chest wall with which the accelerometer transducer is in engagement, the accelerometer transducer producing an output signal which is within the range of between two and thirty cycles per second and which is thus a function of the heart action of the subject.
Claim 5
Independent Claim
132 words
The method of obtaining signals which are the function of the blood pressure of a subject comprising positioning an accelerometer transducer in engagement with the chest wall of the subject adjacent the apex beat location, the accelerometer transducer being of the type known as resistive, complete balanced bridge, unbonded strain gage, there being movement of the chest wall in response to the heart action of the subject, sensing the signal output of the accelerometer transducer which is within the range of between 2 and 30 cycles per second and which thus is a function of the amplitude of said movement of the chest wall, the magnitude of movement of the chest wall at frequencies between 2 and 30 cycles per second being directly related to the systolic blood pressure of the subject.
Claim 6
Independent Claim
132 words
The method of obtaining signals which are the function of the blood pressure of a subject comprising positioning an accelerometer transducer in engagement with the chest wall of the subject adjacent the apex beat location, the accelerometer transducer being of the type known as resistive, complete balanced bridge, unbonded strain gage, there being movement of the chest wall in response to the heart action of the subject, sensing the signal output of the accelerometer transducer which is within the range of between 2 and 30 cycles per second and which thus is a function of the amplitude of said movement of the chest wall, the magnitude of movement of the chest wall at frequencies between 2 and 30 cycles per second being directly related to the systolic blood pressure of the subject.
Claim 7
Dependent Claim
164 words
Apparatus for physiological investigation of a subject comprising: an accelerometer transducer adapted to engage a chest portion of the subject, the accelerometer transducer being of the resistive, complete balanced bridge, unbonded strain gage type, the accelerometer transducer having a primary response which is normal to a given axis thereof, the accelerometer transducer adapted to be positioned in engagement with a chest portion of a subject so that the accelerometer transducer moves in a direction substantially normal to said given axis thereof with movement of said chest portion of the subject during heart action of the subject, the accelerometer transducer producing an output signal which is a function of said movement, receiver means electrically connected to the accelerometer transducer and sensing signals in the frequency range of between 2 and 30 cycles per second, said receiver means thus functioning in accordance with the mechanical action of the heart of the subject to provide signals which are a function of the heart action of the subject.
Claim 8
Dependent Claim
164 words
Apparatus for physiological investigation of a subject comprising: an accelerometer transducer adapted to engage a chest portion of the subject, the accelerometer transducer being of the resistive, complete balanced bridge, unbonded strain gage type, the accelerometer transducer having a primary response which is normal to a given axis thereof, the accelerometer transducer adapted to be positioned in engagement with a chest portion of a subject so that the accelerometer transducer moves in a direction substantially normal to said given axis thereof with movement of said chest portion of the subject during heart action of the subject, the accelerometer transducer producing an output signal which is a function of said movement, receiver means electrically connected to the accelerometer transducer and sensing signals in the frequency range of between 2 and 30 cycles per second, said receiver means thus functioning in accordance with the mechanical action of the heart of the subject to provide signals which are a function of the heart action of the subject.
Claim 9
Dependent Claim
24 words
The method of claim 2 in which the accelerometer transducer is positioned at the apex beat location of the chest wall of the subject.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |