US3623478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording sphygmomanometer
Assignee: TECHNICAL RESOURCES Inc
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Filing: 1969-12-19
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Granted: 1971-11-30
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Expires: 1989-12-19
Abstract
Abstract A recording sphygmomanometer adapted to print systolic and diastolic pressure indicia to form a permanent record on a heat sensitive sheet. Microphone impulses from a pressure cuff are amplified to produce current in a heating element mounted on the pointer of a manometer. The record sheet may have a printed scale adjacent the heating element and accurately positioned in relation thereto.
Inventors
- 👤 Joseph M Saba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:00
CPC Classifications
A; A61; A61B; A61B7/00; A61B7/02; A61B7/04; A61B7/045; Y; Y10; Y10S; Y10S128/00; Y10S128/90
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
147 words
A recording sphygmomanometer having, in combination, a cuff having an air closure and a microphone, inflating and deflating means for the closure, a manometer having a spindle, a pointer on the spindle and an electrical heater on the pointer spaced from the spindle, a hose connection between the air closure and the manometer, an amplifier having an input connection to the microphone and an output connection to the heater, and means to receive a heat sensitive recording sheet and to accurately locate said sheet in relation to the spindle, in non-touching relation to the heater and in position to expose the sheet to heat produced by said heater, said amplifier including means to energize the heater only upon the occurrence of blood pressure pulses detected by the microphone, and having means to sustain the time of heating for an appreciable portion of the interval between successive pulses.
Claim 2
Dependent Claim
147 words
A recording sphygmomanometer having, in combination, a cuff having an air closure and a microphone, inflating and deflating means for the closure, a manometer having a spindle, a pointer on the spindle and an electrical heater on the pointer spaced from the spindle, a hose connection between the air closure and the manometer, an amplifier having an input connection to the microphone and an output connection to the heater, and means to receive a heat sensitive recording sheet and to accurately locate said sheet in relation to the spindle, in non-touching relation to the heater and in position to expose the sheet to heat produced by said heater, said amplifier including means to energize the heater only upon the occurrence of blood pressure pulses detected by the microphone, and having means to sustain the time of heating for an appreciable portion of the interval between successive pulses.
Claim 3
Dependent Claim
26 words
The combination according to claim 1, in which the means to receive a beat sensitive recording sheet is a housing which supports the manometer and amplifier.
Claim 4
Dependent Claim
17 words
The combination according to claim 1, with said sheet, said sheet having a manometer scale printed thereon.
Claim 5
Dependent Claim
37 words
The combination according to claim 1, in which the amplifier includes a multivibrator and means to change the state of the multivibrator and to energize the heater simultaneously upon the occurrence of each pulse from the microphone.
References Cited (Backward Citations)
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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) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |