Patent US5346470A successfully refreshed from Google Patents.
US5346470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contrast media injector
Assignee: Angiodynamics Inc
•
Filing: 1993-01-27
•
Granted: 1994-09-13
•
Expires: 2013-01-27
Abstract
Abstract An apparatus is provided for use with a contrast media injector. The injector is of the type including a gas source and a liquid source. The apparatus includes a gas delivery channel connected to the gas source and a liquid delivery channel connected to the liquid source. Two normally closed valves are provided to control flow from the gas and liquid channel. The valves insure that gas and liquid do not simultaneously exit from the channel. The valves minimize inadvertent mixing of the gas and saline downstream of the valves. The gas channel is connected to a gas source using a fitting which also connects electro-conductive wires in the apparatus to a power source. The liquid channel connects to a source of liquid.
Inventors
- 👤 Eamonn Hobbs
- 👤 Irvin F. Hawkins
- 👤 Arthur Zimmet
- 👤 John Goodman
- 👤 Daniel Recinella
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:08
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/48; A61B6/481; A61B5/00; A61B5/02; A61B5/021; A61B5/0215; A61B5/41; A61B5/411; A61B6/50; A61B6/504; A61M; A61M5/00; A61M5/007; A61B18/00; A61B18/18; A61B18/20; A61B18/22; A61B18/24; A61B18/245; A61B6/54; A61B6/541; A61M2202/00; A61M2202/02; A61M2202/0225; A61M2210/00; A61M2210/12; A61M2230/00; A61M2230/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
171 words
An apparatus for use with a contrast media injector of the type including a source of gas and a source of liquid, the apparatus comprising: a gas delivery channel; means for connecting said gas delivery channel to a gas source; a liquid delivery channel; means for connecting said liquid delivery channel to a liquid source; electro-conductive wires connectable to a power source; a plurality of normally closed, automatic valves for controlling the flow of gas and liquid from said gas and liquid channels, said normally closed valves including means for opening in response to predetermined internal pressures, a said normally closed valves including means for insuring that the gas and liquid do not simultaneously exit from said gas and liquid channels, when the back pressure of the gas is greater than the back pressure of the liquid, said normally closed valves minimizing inadvertent mixing of said gas and liquid; said means for connecting said gas channel to said gas source including means to connect said electro-conductive wires to a power source.
Claim 2
Independent Claim
171 words
An apparatus for use with a contrast media injector of the type including a source of gas and a source of liquid, the apparatus comprising: a gas delivery channel; means for connecting said gas delivery channel to a gas source; a liquid delivery channel; means for connecting said liquid delivery channel to a liquid source; electro-conductive wires connectable to a power source; a plurality of normally closed, automatic valves for controlling the flow of gas and liquid from said gas and liquid channels, said normally closed valves including means for opening in response to predetermined internal pressures, a said normally closed valves including means for insuring that the gas and liquid do not simultaneously exit from said gas and liquid channels, when the back pressure of the gas is greater than the back pressure of the liquid, said normally closed valves minimizing inadvertent mixing of said gas and liquid; said means for connecting said gas channel to said gas source including means to connect said electro-conductive wires to a power source.
Claim 3
Dependent Claim
57 words
The apparatus of claim 1 wherein said plurality of normally closed valves includes two duckbill check valves placed at an angle of between 30° to 45°, and further included a common channel through which either gas or liquid flows after exiting said duckbill valves, said common channel having an inner diameter of between 0.062 to 0.110 inches.
Claim 4
Dependent Claim
17 words
The apparatus of claim 1 and further comprising a channel in which said electro-conductive wires are housed.
Claim 5
Dependent Claim
29 words
The apparatus of claim 1 wherein said gas delivery channel, said liquid delivery channel and, said channel housing said electro-conductive wires are three lumens of a bonded tri-lumen tube.
Claim 6
Dependent Claim
57 words
The apparatus of claim 1 and further including a receptacle on said contrast media injector, and wherein said means for connecting said gas channel and said electro-conductive wires to a gas source and a power source is a fitting, said fitting including wire locks, said wire locks constructed to mate with spring loaded pins on said receptacle.
Claim 7
Dependent Claim
18 words
The apparatus of claim 5 wherein the portion of said fitting which mates with said receptacle is flat.
Claim 8
Dependent Claim
26 words
The apparatus of claim 6 wherein said fitting includes wire locks and said receptacle includes spring loaded pins, the wire locks engaging the spring loaded pins.
Claim 9
Dependent Claim
27 words
The apparatus of claim 6 wherein said fitting includes a conductive epoxy and said receptacle includes spring loaded pins and the epoxy engaging the spring loaded pins.
Claim 10
Dependent Claim
45 words
The apparatus of claim 6 wherein said fitting includes an O-ring and an O-ring tip and wherein said receptacle includes a central bore, the O-ring tip being shaped and dimensioned to fit in said bore, said O-ring sealing said bore before electrical contact is made.
References Cited (Backward Citations)
US3375823A
Cited
US3631847A
Cited
US3769962A
Cited
US3812843A
Cited
US3880138A
Cited
US3870072A
Cited
US4137913A
Cited
US4392847A
Cited
US4464169A
Cited
US4878894A
Cited
US4895144A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-09-12 | 1998-03-14 | 1998-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-09-12 | 2002-03-14 | 2002-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-09-12 | 2006-03-14 | 2006-09-13 | $7700.00 | Window Closed / Lapsed |