Patent US5339825A successfully refreshed from Google Patents.
US5339825A
Expired / Lapsed
US
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Apparatus to measure and record peak air passage pressure
Assignee: Clement Clarke International Ltd
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Filing: 1992-04-15
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Granted: 1994-08-23
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Expires: 2012-04-15
Abstract
Abstract The apparatus measure the exhalation of a subject and stores selected data relating to the peak value of the air pressure during exhalation. The storing unit for the data stores the peak values for a plurality of time periods and the apparatus can collect a series of measurements over an extended time period. Auxiliary information and data relating to each measurement can also be stored in the storing unit. A dedicated power source may be incorporated for holding the stored information in the storing unit.
Inventors
- 👤 John McNaughton
- 👤 Derek P. Hutchison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:22
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/08; A61B5/087; A61B5/0871
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
114 words
An apparatus for measuring lung function of a subject, comprising: air passage means for receiving an exhalation of the subject; pressure sensing means for producing signals of the pressure in said air passage means during said exhalation; means for processing said signals to derive a peak value of the signal; means for comparing a plurality of peak values from the respective signals from a succession of exhalations within a predetermined time period; means responsive to said means for comparing for selecting a plurality of the highest peak values from the compared plurality of peak values; means for storing said selected peak values; and means for reading said stored peak values from said storing means.
Claim 2
Independent Claim
114 words
An apparatus for measuring lung function of a subject, comprising: air passage means for receiving an exhalation of the subject; pressure sensing means for producing signals of the pressure in said air passage means during said exhalation; means for processing said signals to derive a peak value of the signal; means for comparing a plurality of peak values from the respective signals from a succession of exhalations within a predetermined time period; means responsive to said means for comparing for selecting a plurality of the highest peak values from the compared plurality of peak values; means for storing said selected peak values; and means for reading said stored peak values from said storing means.
Claim 3
Dependent Claim
19 words
An apparatus of claim 1, further comprising means for inputting into said storing means data auxiliary to the measurement.
Claim 4
Dependent Claim
13 words
An apparatus according to claim 2, wherein said inputting means comprises a keypad.
Claim 5
Dependent Claim
36 words
An apparatus according to claim 2, wherein the storing means comprises a program store and said inputting means is connected to said programming store for inputting commands for selecting changing data stored in said program store.
Claim 6
Dependent Claim
28 words
An apparatus according to claim 1, further comprising a dedicated power source connected to said storing means for holding therein data collected from a plurality of time periods.
Claim 7
Dependent Claim
32 words
An apparatus according to claim 1, further comprising a main power source for operation of the apparatus and a second battery power source connected to said storing means for holding data therein.
Claim 8
Dependent Claim
24 words
An apparatus according to claim 1, wherein said storing means comprises means for storing information relating to the time when a measurement is made.
Claim 9
Dependent Claim
26 words
An apparatus according to claim 1, further comprising means for indicating the start of a predetermined time at which a measurement is due to be made.
Claim 10
Dependent Claim
36 words
An apparatus according to claim 9, further comprising a readout means having a pointer and an associated scale; and a separate display panel connected to said processing means for displaying peak flow results and reminder information.
Claim 11
Dependent Claim
38 words
An apparatus according to claim 1, further comprising a casing in which said air passage means, said pressure sensing means, said processing means, said comparing means, said selecting means, said storing means and said reading means are disposed.
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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) | 1997-08-22 | 1998-02-21 | 1998-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-08-22 | 2002-02-21 | 2002-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-08-22 | 2006-02-21 | 2006-08-23 | $7700.00 | Window Closed / Lapsed |