US3911904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blood pressure manometer
Assignee: TECHNICAL RESOURCES Inc
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Filing: 1974-01-21
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Granted: 1975-10-14
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Expires: 1994-01-21
Abstract
Abstract A blood pressure manometer comprising a pneumatic cuff to be wrapped around the limb of a person and, connected to the cuff, a pressure indication system comprising a housing, preferably with a longitudinal channel, visual pressure indication scale markings along the housing, and a resiliently expandable balloon-like aircontaining member, preferably confined by the channel, attached at one end to the housing, the other end of the expandable member being free to expand along the length of the housing. The expansion of this member is directly related to the pressure delivered from the pneumatic cuff, the free end of the expandable member indicating blood pressure in accordance with the pressure indication markings on the pressure scale.
Inventors
- 👤 Joseph M Saba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:29
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/02; A61B5/021; A61B5/022; A61B5/023
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
159 words
An aneroid syphgmomanometer comprising: a pneumatic constricting cuff for wrapping around the limb of a person; pressurizing means for pressurizing said cuff and controllably releasing said pressure; and pressure indicating means pneumatically attached to said cuff for measuring said pressure comprising: a housing defining an expansion channel therewithin open to atmosphere and having scale markings spaced along said channel; and an inflatable, resiliently expandable aircontaining member attached to said housing within said channel at one end thereof, said expandable member being arranged to expand and contract without external opposition or assistance within said housing along said channel in response to pneumatic pressure from said cuff, said housing preventing width-wise expansion of said member and having means for viewing and thereby determining the variable position of the free end of said member, said scale being calibrated to measure said pressure within said cuff, whereby blood pressure may be measured by comparing the position of said free end to said scale.
Claim 2
Dependent Claim
159 words
An aneroid syphgmomanometer comprising: a pneumatic constricting cuff for wrapping around the limb of a person; pressurizing means for pressurizing said cuff and controllably releasing said pressure; and pressure indicating means pneumatically attached to said cuff for measuring said pressure comprising: a housing defining an expansion channel therewithin open to atmosphere and having scale markings spaced along said channel; and an inflatable, resiliently expandable aircontaining member attached to said housing within said channel at one end thereof, said expandable member being arranged to expand and contract without external opposition or assistance within said housing along said channel in response to pneumatic pressure from said cuff, said housing preventing width-wise expansion of said member and having means for viewing and thereby determining the variable position of the free end of said member, said scale being calibrated to measure said pressure within said cuff, whereby blood pressure may be measured by comparing the position of said free end to said scale.
Claim 3
Dependent Claim
25 words
The syphygmomanometer of claim 1 wherein said expandable member comprises an elastomeric balloon and said means for viewing comprises a window extending along said channel.
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) | 1978-10-13 | 1979-04-14 | 1979-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-13 | 1983-04-14 | 1983-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-13 | 1987-04-14 | 1987-10-14 | $7700.00 | Window Closed / Lapsed |