US3867941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insufflation apparatus for introducing limited quantities of carbon dioxide into the human body for operative purposes
Assignee: Individual
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Filing: 1973-09-21
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Granted: 1975-02-25
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Expires: 1993-09-21
Abstract
Abstract The insufflation apparatus serves for introducing limited quantities of carbon dioxide into the human body for operative purposes and consists of a CO2 container disposed in a housing and comprising a manometer and a shut-off valve and of an optical and/or acoustic signal device which is connected to a flow meter via a control device comprising a measured value comparator and a time switch, and the shut-off valve of the flow meter is connected to a device which reopens the closed shut-off valve after passage of a variable regeneration time and is controllable via the time switch.
Inventors
- 👤 Hans Joachim Lindemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:20
CPC Classifications
A; A61; A61M; A61M31/00; A61B; A61B1/00; A61B1/00064; A61B1/00071; A61B1/0008; A61B1/00082; A61B1/12; A61B1/303; A61B1/313; A61B5/00; A61B5/03; A61B5/036; A61M13/00; A61M13/003
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
170 words
In insufflation apparatus for introducing limited quantities of carbon dioxide into the human body for surgical purposes, said apparatus including a housing, a carbon dioxide container (11) disposed in said housing, a manometer and a shut-off valve (19) for said container, pressure regulating means (17), flow measuring means (15), a warning signal device (192), outlet means for connEcting said apparatus to a hysteroscope (20), and flow path means extending between said carbon dioxide container and said outlet means, the improvement wherein said flow measuring means (15) includes a measured value pickup means (151) and is connected within said flow path means between said carbon dioxide container and said outlet means at a location upstream from said pressure regulating means taken in the direction of flow through said flow path means, and wherein said apparatus includes a control device (191) comprising a measured value comparator (152), a time switch mechanism 193 and a nominal value setting device (153) which, together with said shut-off valve, are connected with said warning signal device.
Claim 2
Dependent Claim
170 words
In insufflation apparatus for introducing limited quantities of carbon dioxide into the human body for surgical purposes, said apparatus including a housing, a carbon dioxide container (11) disposed in said housing, a manometer and a shut-off valve (19) for said container, pressure regulating means (17), flow measuring means (15), a warning signal device (192), outlet means for connEcting said apparatus to a hysteroscope (20), and flow path means extending between said carbon dioxide container and said outlet means, the improvement wherein said flow measuring means (15) includes a measured value pickup means (151) and is connected within said flow path means between said carbon dioxide container and said outlet means at a location upstream from said pressure regulating means taken in the direction of flow through said flow path means, and wherein said apparatus includes a control device (191) comprising a measured value comparator (152), a time switch mechanism 193 and a nominal value setting device (153) which, together with said shut-off valve, are connected with said warning signal device.
Claim 3
Dependent Claim
17 words
Apparatus according to claim 1 wherein said warning signal device comprises means for generating an optical signal.
Claim 4
Dependent Claim
17 words
Apparatus according to claim 1 wherein said warning signal device comprises means for generating an acoustical signal.
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) | 1978-02-24 | 1978-08-26 | 1979-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-24 | 1982-08-26 | 1983-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-24 | 1986-08-26 | 1987-02-25 | $7700.00 | Window Closed / Lapsed |