Patent US3768484A successfully refreshed from Google Patents.
US3768484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gastric cooling apparatus
Assignee: Individual
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Filing: 1972-10-06
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Granted: 1973-10-30
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Expires: 1992-10-06
Abstract
Abstract A gastric cooling apparatus which can be used for general cooling but which is especially adapted for local cooling, to reduce blood flow in the vessels supplying the stomach wall of a person. The gastric cooling apparatus includes a flexible, inflatable bag for insertion into a patient''s stomach and to contain a predetermined amount of distilled water. A water cooling means, a vacuum operated reservoir means, and a directional flow control shunt valve are operatively interconnected, whereby when vacuum is applied to the reservoir means, said vacuum will operate the reservoir means to withdraw a first predetermined amount of water from said bag through said shunt valve, and then block off said vacuum to permit said first predetermined amount of water to flow by gravity from said reservoir means and through said shunt valve to said water cooling means while simultaneously forcing a second predetermined amount of cooled water out of said cooling means and into said bag.
Inventors
- 👤 A Gawura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:44
CPC Classifications
A; A61; A61F; A61F5/00; A61F5/0003; A61F5/0013; A61F5/003; A61F5/0036; A61F7/00; A61F7/12; A61F7/123
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
146 words
A gastric cooling apparatus comprising: a. a flexible, inflatable bag for insertion into a patient''s stomach; b. a water cooling means having an inlet and an outlet; c. a vacuum operated reservoir means operably connected to a vacuum source; d. a directional flow control shunt valve; e. means operatively interconnecting said shunt valve, said reservoir means, said water cooling means and said flexible, inflatable bag, whereby when vacuum is applied to the reservoir means, said vacuum will operate said reservoir means to withdraw a first predetermined amount of water from said bag through said valve, and then block off said vacuum to permit said first predetermined amount of water to flow by gravity from said reservoir means and through said valve to said water cooling means while simultaneously a second predetermined amount of cooled water is forced out of said cooling means and into said bag.
Claim 2
Dependent Claim
146 words
A gastric cooling apparatus comprising: a. a flexible, inflatable bag for insertion into a patient''s stomach; b. a water cooling means having an inlet and an outlet; c. a vacuum operated reservoir means operably connected to a vacuum source; d. a directional flow control shunt valve; e. means operatively interconnecting said shunt valve, said reservoir means, said water cooling means and said flexible, inflatable bag, whereby when vacuum is applied to the reservoir means, said vacuum will operate said reservoir means to withdraw a first predetermined amount of water from said bag through said valve, and then block off said vacuum to permit said first predetermined amount of water to flow by gravity from said reservoir means and through said valve to said water cooling means while simultaneously a second predetermined amount of cooled water is forced out of said cooling means and into said bag.
Claim 3
Dependent Claim
76 words
A gastric cooling apparatus as defined in claim 1, wherein: a. said vacuum operated reservoir means includes a cylindrical reservoir body having a vacuum passage connected at one end thereof which is connected to said vacuum source, and the other end thereof being connected to said shunt valve, and a float valve operatively mounted in said reservoir body for blocking said vacuum passage when a predetermined amount of water has been drawn into said reservoir body.
Claim 4
Dependent Claim
39 words
A gastric cooling apparatus as defined in claim 2, wherein: a. said float valve includes a hollow cylindrical body having a diaphragm on one end thereof for blocking said vacuum passage and being open at the other end thereof.
Claim 5
Dependent Claim
38 words
A gastric cooling apparatus as defined in claim 3, wherein: a. said float valve includes a plurality of ports formed through the wall of said cylindrical body and a weight means movably mounted inside of said cylindrical body.
Claim 6
Dependent Claim
27 words
A gastric cooling apparatus as defined in claim 4, wherein: a. said reservoir means cylindrical body is provided with a vent means at said one end thereof.
Claim 7
Dependent Claim
23 words
A gastric cooling apparatus as defined in claim 5, wherein: a. said reservoir means vacuum passage is provided with a check valve means.
Claim 8
Dependent Claim
86 words
A gastric cooling apparatus as defined in claim 1, wherein: a. said flow control shunt valve includes means for providing a first circuit therethrough to interconnect said bag with said reservoir means when said reservoir means is vacuum operated, and a second circuit therethrough to interconnect said bag with said water cooling means and said reservoir means when said first predetermined amount of water flows by gravity from said reservoir means so as to simultaneously force said second predetermined amount of cooled water into said bag.
Claim 9
Dependent Claim
170 words
A gastric cooling apparatus as defined in claim 1, wherein said flow control shunt valve includes: a. a body; b. a first passage means formed in said body and having one end interconnected to said bag and the other end connected to the outlet end of said water cooling means; c. a second passage means formed in said body and having one end connected to said reservoir means and the other end connected to said first passage means at a point intermediate its ends; d. said connecting means including conduit means connecting the inlet end of said water cooling means to said second passage means at a point intermediate its ends; and, e. a check valve means operatively mounted in each of said first and second passage means at said other ends for controlling the flow of water through the water cooling means when the reservoir means discharges water by gravity and for blocking water flow through the water cooling means when the reservoir means draws water from the bag.
Claim 10
Dependent Claim
22 words
A gastric cooling apparatus as defined in claim 8, wherein: a. each of said check valve means comprises a ball check valve.
Claim 11
Dependent Claim
34 words
A gastric cooling apparatus as defined in claim 8, including: a. a temperature indicating means operatively mounted in said first passage means in said body for indicating the temperature of the water flowing therethrough.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |