Patent US4004585A successfully refreshed from Google Patents.
US4004585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety interface for anesthesia vacuum scavenging
Assignee: Individual
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Filing: 1975-11-18
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Granted: 1977-01-25
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Expires: 1995-11-18
Abstract
Abstract Gases from a pressure relief valve in the patient circle are coupled to a first end of an elongated rigid cylinder, the other end of which is coupled to a vacuum exhaust pump. Coaxially disposed within the cylinder is an elongated tube which deposits gases from the valve to within a predetermined distance of the vacuum withdrawal port of the cylinder. The cylinder defines openings to ambient air at the first side, and baffling material is provided at the vacuum withdrawal end to facilitate intermixing of gas and air and prevent gas splashing.
Inventors
- 👤 John R. Boehringer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:14
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/0087; A61M16/009; A61M16/22; A61M2206/00; A61M2206/10; A61M2206/14
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
167 words
In an anesthesia administration system having pressure relief valving in the patient circle and a vacuum exhaust from the valving, safety interface apparatus comprising: an elongated cylindrical means having an interconnection with said vacuum exhaust at one end and an interconnection with said valving at its other end, said cylindrical means being closed to atmosphere at said one end and defining openings at said other end to allow free passage of ambient air into said means; an elongated tubular means within said cylindrical means, said tubular means being connected to receive gases from said valving via said interconnection at said one end, said tubular means terminating with an opening a predetermined distance from said one end; and baffle means within said cylindrical means at said one end and occupying at least a portion of said predetermined distance between said one end and the termination of said tubular means for preventing a splashing effect which may occur due to sudden surges of exhaust gases from said valve means.
Claim 2
Dependent Claim
167 words
In an anesthesia administration system having pressure relief valving in the patient circle and a vacuum exhaust from the valving, safety interface apparatus comprising: an elongated cylindrical means having an interconnection with said vacuum exhaust at one end and an interconnection with said valving at its other end, said cylindrical means being closed to atmosphere at said one end and defining openings at said other end to allow free passage of ambient air into said means; an elongated tubular means within said cylindrical means, said tubular means being connected to receive gases from said valving via said interconnection at said one end, said tubular means terminating with an opening a predetermined distance from said one end; and baffle means within said cylindrical means at said one end and occupying at least a portion of said predetermined distance between said one end and the termination of said tubular means for preventing a splashing effect which may occur due to sudden surges of exhaust gases from said valve means.
Claim 3
Dependent Claim
21 words
Apparatus as described in claim 1 wherein said baffle means comprises copper mesh material substantially randomly packed within said one end.
Claim 4
Dependent Claim
30 words
Apparatus as described in claim 2 wherein said baffle means is packed throughout said predetermined distance, and extending away from said one end beyond said termination of said tubular means.
Claim 5
Dependent Claim
41 words
Apparatus as described in claim 1 wherein said tubular means is substantially coaxial within said cylindrical means, said interconnection with said valving is located substantially on said axis, and said openings are disposed substantially radially around said interconnection with said valving.
Claim 6
Dependent Claim
28 words
Apparatus as described in claim 4 wherein said cylindrical means is substantially vertically disposed with said one end at the bottom and said other end at the top.
Claim 7
Dependent Claim
22 words
Apparatus as described in claim 1 and further including an adjustably opening damper means for varying the effective size of said openings.
Claim 8
Dependent Claim
56 words
Apparatus as described in claim 1 and further including a three opening tee interconnection having a first opening coupled to said tubular means via said interconnection at said other end, a second opening coupled to said valving, a reservoir bag, said tee interconnection having a third opening connected to said reservoir bag in the patient circle.
Claim 9
Dependent Claim
152 words
Vacuum scavenging apparatus for anesthesia administration systems comprising: pressure relief valving means opening to the patient administration circle at a predetermined pressure; a rigid elongated cylinder having means at one end for receiving gases from said valving means, and for expelling gases at its other end, said cylinder being closed to atmosphere at said other end and defining openings at said one end whereby its interior chamber communicates with its ambient atmosphere; an elongated tubular means extending within said cylinder from said one end to within a predetermined distance of said other end for conveying gases received from said valving means to the interior of said cylinder; baffle means within said cylinder at said other end for preventing a splashing effect which may occur due to sudden surges of exhaust gases from said valve means; and a vacuum exhaust pump means for withdrawal of gases from said cylinder at said other end.
Claim 10
Dependent Claim
152 words
Vacuum scavenging apparatus for anesthesia administration systems comprising: pressure relief valving means opening to the patient administration circle at a predetermined pressure; a rigid elongated cylinder having means at one end for receiving gases from said valving means, and for expelling gases at its other end, said cylinder being closed to atmosphere at said other end and defining openings at said one end whereby its interior chamber communicates with its ambient atmosphere; an elongated tubular means extending within said cylinder from said one end to within a predetermined distance of said other end for conveying gases received from said valving means to the interior of said cylinder; baffle means within said cylinder at said other end for preventing a splashing effect which may occur due to sudden surges of exhaust gases from said valve means; and a vacuum exhaust pump means for withdrawal of gases from said cylinder at said other end.
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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) | 1980-01-25 | 1980-07-26 | 1981-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-25 | 1984-07-26 | 1985-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-25 | 1988-07-26 | 1989-01-25 | $7700.00 | Window Closed / Lapsed |