US3780738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus of medical suction
Assignee: Baxter International Inc
•
Filing: 1971-12-08
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Granted: 1973-12-25
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Expires: 1991-12-08
Abstract
Abstract The specification discloses a medical suction apparatus including a generally rigid container for supporting a flexible drainage bag. A drainage conduit extends between the bag and the exterior of the container for connection to an area to be drained and a vacuum conduit extends from the bag to the exterior of the container for connection to a source of reduced pressure. A port extends through the walls of the flexible container to the space between the container and the flexible bag. A valve is disposed in the port for allowing air in the space to be removed in order to maintain the bag in an open position during suction operation. In one embodiment of the invention, air is removed from the space between the bag and the container by applying pressurized air to the interior of the bag. In another embodiment of the invention, air is removed between the bag and the container by the application of suction to the port.
Inventors
- 👤 D Deaton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:04
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/60; A61M1/604
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
87 words
The method of providing medical suction from a rigid container supporting a flexible bag therein comprising: initially directing pressurized air into said bag to open said bag while exhausting air from between said bag and said container through a port in said container; terminating flow of pressurized air into said bag when said bag is opened and thereafter preventing flow of air through said port; and subsequently applying suction through said bag to a patient area to draw fluids from the patient area into said opened bag.
Claim 2
Independent Claim
87 words
The method of providing medical suction from a rigid container supporting a flexible bag therein comprising: initially directing pressurized air into said bag to open said bag while exhausting air from between said bag and said container through a port in said container; terminating flow of pressurized air into said bag when said bag is opened and thereafter preventing flow of air through said port; and subsequently applying suction through said bag to a patient area to draw fluids from the patient area into said opened bag.
Claim 3
Dependent Claim
22 words
The method of claim 1 wherein flow of air through said port is terminated by closing of a valve in said port.
Claim 4
Independent Claim
87 words
The method of providing medical suction from a rigid container supporting a flexible bag therein comprising: initially connecting a source of reduced pressure to the space between said bag and said container to cause said bag to become opened; disconnecting said source of reduced pressure when said bag is opened and thereafter preventing flow of air into the space between said bag and said container; and subsequently applying suction through said bag to a patient area to draw fluids from the patient area into said opened bag.
Claim 5
Independent Claim
87 words
The method of providing medical suction from a rigid container supporting a flexible bag therein comprising: initially connecting a source of reduced pressure to the space between said bag and said container to cause said bag to become opened; disconnecting said source of reduced pressure when said bag is opened and thereafter preventing flow of air into the space between said bag and said container; and subsequently applying suction through said bag to a patient area to draw fluids from the patient area into said opened bag.
Claim 6
Dependent Claim
21 words
The method of claim 3 wherein the flow of air into said container is prevented by the operation of a valve.
Claim 7
Dependent Claim
189 words
A medical suction apparatus comprising: a generally rigid open topped container; a flexible drainage bag for being disposed within said container; a drainage conduit extending from the upper part of said bag to the exterior of said container for connection to a patient area; a vacuum conduit extending from the upper part of said bag to the exterior of said container for connection to a source of reduced pressure; a cover for said container rigidly supporting said drainage anD vacuum conduits to thereby suspend said bag within said container; a port communicating with the exterior of said container and the space between said bag and the interior of said container; and a valve in said port having a first position for allowing the passage of gas through said port to the exterior of said container in order to expand said bag to an opened position prior to the application of vacuum to said vacuum conduit and further having a second position for preventing the passage of gas to the interior of said container to maintain said bag in an opened position during application of vacuum to said vacuum conduit.
Claim 8
Dependent Claim
189 words
A medical suction apparatus comprising: a generally rigid open topped container; a flexible drainage bag for being disposed within said container; a drainage conduit extending from the upper part of said bag to the exterior of said container for connection to a patient area; a vacuum conduit extending from the upper part of said bag to the exterior of said container for connection to a source of reduced pressure; a cover for said container rigidly supporting said drainage anD vacuum conduits to thereby suspend said bag within said container; a port communicating with the exterior of said container and the space between said bag and the interior of said container; and a valve in said port having a first position for allowing the passage of gas through said port to the exterior of said container in order to expand said bag to an opened position prior to the application of vacuum to said vacuum conduit and further having a second position for preventing the passage of gas to the interior of said container to maintain said bag in an opened position during application of vacuum to said vacuum conduit.
Claim 9
Dependent Claim
17 words
The apparatus of claim 5 wherein said valve is manually operable between said first and second positions.
Claim 10
Dependent Claim
12 words
The apparatus of claim 5 wherein said valve comprises a one-way valve.
Claim 11
Dependent Claim
13 words
The apparatus of claim 5 wherein said port is carried by said cover.
Claim 12
Dependent Claim
59 words
The apparatus of claim 5 wherein each of said drainage and vacuum conduits comprise a first member rigidly attached to said bag and a second member extending through said cover for frictional engagement with said first member, said second member including an aperture therethrough for providing communication between the interior of said bag and the exterior of said container.
References Cited (Backward Citations)
US2999500A
Cited
US3032037A
Cited
US3046979A
Cited
US3306327A
Cited
US3559647A
Cited
US3680560A
Cited
US3556101A
Cited
US3648698A
Cited
US3625216A
Cited
US3685517A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |