US4007734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blood pressure indicator
Assignee: Individual
•
Filing: 1975-06-02
•
Granted: 1977-02-15
•
Expires: 1995-06-02
Abstract
Abstract A blood pressure indicator adapted for self-examination includes a blood pressure arm cuff having an inflatable bladder, and a pair of pressure sensing switches impinging on the bladder and set to audibly or visually indicate the maximum systolic and diastolic pressure permissible. The bladder is inflatable by a flexible bulb connected thereto through a hose and a unidirectional flow valve which maintains inflation of the bladder. As air leaks out of the bladder, the patient notes when the pulse returns to the brachial artery, in relation to the indications given by the switches to ascertain whether the blood pressure falls within the permissible tolerances.
Inventors
- 👤 Rudolph W. Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:34
CPC Classifications
G; G01; G01L; G01L19/00; G01L19/08; G01L19/12; A; A61; A61B; A61B5/00; A61B5/02; A61B5/021; A61B5/022; A61B5/02233
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
79 words
A device for indicating blood pressure, comprising a cuff adapted to be secured about a limb, said cuff including an inflatable bladder, means for inflating and deflating said bladder, and at least one pressure sensing switch secured to said cuff; said pressure sensing switch including plunger means resiliently biased to impinge on said bladder, and sound emitting means actuated by said plunger means for signalling a predetermined pressure exerted by said bladder on said plunger means and the limb.
Claim 2
Independent Claim
79 words
A device for indicating blood pressure, comprising a cuff adapted to be secured about a limb, said cuff including an inflatable bladder, means for inflating and deflating said bladder, and at least one pressure sensing switch secured to said cuff; said pressure sensing switch including plunger means resiliently biased to impinge on said bladder, and sound emitting means actuated by said plunger means for signalling a predetermined pressure exerted by said bladder on said plunger means and the limb.
Claim 3
Dependent Claim
40 words
The device of claim 1, including a pair of pressure sensing switches, said pair including a first pressure sensing switch for indicating a desirable systolic pressure limit, and a second pressure sensing switch for indicating a desirable diastolic pressure limit.
Claim 4
Dependent Claim
20 words
The device of claim 1, wherein said plunger means includes a plunger impinging on the exterior surface of said bladder.
Claim 5
Dependent Claim
21 words
The device of claim 3, including a housing in which said plunger is translatably disposed, said housing secured to said cuff.
Claim 6
Dependent Claim
16 words
The device of claim 4, including adjustable spring means for biasing said plunger toward said bladder.
Claim 7
Dependent Claim
28 words
The device of claim 4, said sound emitting means including an over-center spring disposed in said housing and translatable by said plunger to snap through the center position.
Claim 8
Dependent Claim
19 words
The device of claim 6, including a spindle extending from said plunger and operatively connected to said over-center spring.
Claim 9
Dependent Claim
34 words
The device of claim 1, wherein said inflating means includes a resilient bulb, a tube for connecting said bulb to said bladder, and a unidirectional flow valve disposed between said bulb and said tube.
Claim 10
Dependent Claim
19 words
The device of claim 1, wherein said inflating means includes a fixed bleed port for slowly exhausting said bladder.
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) | 1980-02-15 | 1980-08-16 | 1981-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-15 | 1984-08-16 | 1985-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-15 | 1988-08-16 | 1989-02-15 | $7700.00 | Window Closed / Lapsed |