US5009635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump apparatus
Assignee: Respironics Inc
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Filing: 1989-11-06
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Granted: 1991-04-23
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Expires: 2009-11-06
Abstract
Abstract A pump apparatus such as a stomach pump or the like having a variable volume pumping chamber in the form of a resiliently flexible bulb with a one way flow check valve disposed within the bulb to preclude backflow therefrom, and a second check valve downstream of the resilient bulb, preferably within a reservoir to preclude backflow from the reservoir to the pumping chamber and to contain pumped matter within the reservoir.
Inventors
- 👤 Eugene N. Scarberry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:57
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/80; A61M1/82; A61M1/64; A61M1/68; A61M1/682; A61M1/60; A61M1/63
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
164 words
A stomach pump or the like comprising: a resiliently flexible bulb means enclosing an interior space and having an outlet and an inlet communicating between said interior space and the exterior of said bulb means; first one-way flow check valve means disposed in fluid flow communication with said inlet and operable to preclude material movement from said interior space via said inlet; first connector means disposed adjacent said outlet; a remote reservoir means for receiving material therewithin and including a second connector means disposed in fluid flow communication therewith to permit movement of material into said reservoir means; selectively releasable means connecting said first and second connector means to permit material to move from said interior space of said bulb means into said remote reservoir means; and said reservoir means including second one-way flow check valve means disposed in fluid flow communication with said second connector means and operable to preclude movement of material from within said reservoir means via said second connector means.
Claim 2
Dependent Claim
164 words
A stomach pump or the like comprising: a resiliently flexible bulb means enclosing an interior space and having an outlet and an inlet communicating between said interior space and the exterior of said bulb means; first one-way flow check valve means disposed in fluid flow communication with said inlet and operable to preclude material movement from said interior space via said inlet; first connector means disposed adjacent said outlet; a remote reservoir means for receiving material therewithin and including a second connector means disposed in fluid flow communication therewith to permit movement of material into said reservoir means; selectively releasable means connecting said first and second connector means to permit material to move from said interior space of said bulb means into said remote reservoir means; and said reservoir means including second one-way flow check valve means disposed in fluid flow communication with said second connector means and operable to preclude movement of material from within said reservoir means via said second connector means.
Claim 3
Dependent Claim
23 words
The stomach pump as set forth in claim 1 wherein said first one-way flow check valve means is disposed within said interior space.
Claim 4
Dependent Claim
21 words
The stomach pump as set forth in claim 2 wherein said reservoir means includes a vent means for venting gas therefrom.
Claim 5
Dependent Claim
38 words
The stomach pump as set forth in claim 3 wherein said reservoir means includes an opening means which is selectively operable to open or close said reservoir means to thereby selectively retain or dispose of the contents thereof.
Claim 6
Dependent Claim
18 words
The stomach pump as set forth in claim 4 wherein said reservoir means is a flexible bag means.
Claim 7
Dependent Claim
25 words
The stomach pump as set forth in claim 1 additionally including an elongated tube means releasably connected in fluid flow communication with said inlet means.
Claim 8
Dependent Claim
29 words
The stomach pump as set forth in claim 6 wherein said elongated tube means is a pre-shaped tube adapted to be received into the upper trachea of a patient.
Claim 9
Dependent Claim
40 words
The stomach pump as set forth in claim 1 wherein said bulb means is operable, upon resilient deformation thereof which reduces the volume of said interior space, to move material within said interior space outwardly thereof only via said outlet.
Claim 10
Dependent Claim
39 words
The stomach pump as set forth in claim 8 wherein said bulb means is operable, upon resiling thereof which increases the volume of said interior space, to move material inwardly thereof into said interior space only via said inlet.
Claim 11
Dependent Claim
59 words
The stomach pump as set forth in claim 9 wherein said first and second one-way flow check valve means each includes a pair of adjacent, generally planer flexible valve elements which are joined at least along a pair of laterally spaced elongated joint lines to form an elongated variable cross section passage extending therebetween laterally intermediate said joint lines.
Claim 12
Dependent Claim
33 words
The stomach pump as set forth in claim 9 wherein said bulb means includes a vent opening for controlling the movement of material into said interior space upon resiling of said bulb means.
Claim 13
Dependent Claim
39 words
The stomach pump as set forth in claim 6 additionally including retention means for retaining said elongated tube means with respect to said inlet means when said tube means is disconnected from fluid flow communication with said inlet means.
Claim 14
Dependent Claim
43 words
The stomach pump as set forth in claim 12 wherein said reservoir means includes closure means for selectively opening and closing said reservoir means in a manner that said elongated tube means and said bulb means may be received within said reservoir means.
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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) | 1994-04-22 | 1994-10-22 | 1995-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-22 | 1998-10-22 | 1999-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-22 | 2002-10-22 | 2003-04-23 | $7700.00 | Window Closed / Lapsed |