US4109656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for use with insufflators
Assignee: Liebel Flarsheim Co LLC
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Filing: 1977-02-07
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Granted: 1978-08-29
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Expires: 1997-02-07
Abstract
Abstract Apparatus for use with an insufflator. During the first part of an inhalator cycle, a patient is connected to ambient air but during the latter part of the inhalator cycle the patient is connected to the insufflator. This enhances the desired exposure of the patient's upper airways to the product of the insufflator.
Inventors
- 👤 James H. Goethel
- 👤 Edwin L. Sohngen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:40
CPC Classifications
A; A61; A61M; A61M15/00; A61M16/00; A61M16/0003; A61M2016/0015; A61M2016/0018; A61M2016/0024; A61M2202/00; A61M2202/06; A61M2202/064
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
Apparatus for use with an insufflator comprised of: an insufflator having an output; a breather tube switchably connected to the output of said insufflator and to ambient air; pressure sensor means arranged in communication with said breather tube so as to transmit a first signal when a patient inhales upon said tube; delay circuit means being in electrical communication with said sensor and transmitting a second signal a predetermined time after said first signal but during the latter part of said inhalation cycle; and a diverter valve connected between said breather tube and the output said insufflator and including means in electrical communication with said delay circuit and responsive to said second signal to first connect the patient to ambient air and then, upon receipt of the second signal, to switch the patient to the output of said insufflator.
Claim 2
Dependent Claim
139 words
Apparatus for use with an insufflator comprised of: an insufflator having an output; a breather tube switchably connected to the output of said insufflator and to ambient air; pressure sensor means arranged in communication with said breather tube so as to transmit a first signal when a patient inhales upon said tube; delay circuit means being in electrical communication with said sensor and transmitting a second signal a predetermined time after said first signal but during the latter part of said inhalation cycle; and a diverter valve connected between said breather tube and the output said insufflator and including means in electrical communication with said delay circuit and responsive to said second signal to first connect the patient to ambient air and then, upon receipt of the second signal, to switch the patient to the output of said insufflator.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-08-28 | 1982-02-27 | 1982-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-28 | 1986-02-27 | 1986-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-28 | 1990-02-27 | 1990-08-29 | $7700.00 | Window Closed / Lapsed |