Patent US3888259A successfully refreshed from Google Patents.
US3888259A
Expired / Lapsed
US
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Hypothermia system
Assignee: Individual
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Filing: 1973-08-21
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Granted: 1975-06-10
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Expires: 1993-08-21
Abstract
Abstract A hypothermia system for therapeutic use, particularly in hospitals, to cool or heat patients, the hypothermia system including a novel fluid pressure operated impeller driven pump effective to recirculate heat transfer fluid through a virtually closed fluid circuit including a hypothermia pad.
Inventors
- 👤 Robert C Miley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:41
CPC Classifications
A; A61; A61F; A61F7/00; A61F7/10; A61F2007/0054; A61F2007/0056; A61F7/007; A61F2007/0075; A61F2007/0076; A61F2007/0095
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
109 words
In a hypothermia system, the combination including hypothermia pad means, fluid heat exchange means, fluid pressure operated impeller-pump means having an impeller portion and a pump portion each provided with a fluid inlet and a fluid outlet, a source of fluid pressure, means for connecting the inlet of said impeller portion to said source of fluid pressure, and a closed fluid circuit connecting the outlet of said pump portion to the inlet of said pump portion through said heat exchange means and said hypothermia pad means, said source of fluid pressure comprising a second closed fluid circuit including the outlet of said impeller portion and second heat exchange means.
Claim 2
Dependent Claim
109 words
In a hypothermia system, the combination including hypothermia pad means, fluid heat exchange means, fluid pressure operated impeller-pump means having an impeller portion and a pump portion each provided with a fluid inlet and a fluid outlet, a source of fluid pressure, means for connecting the inlet of said impeller portion to said source of fluid pressure, and a closed fluid circuit connecting the outlet of said pump portion to the inlet of said pump portion through said heat exchange means and said hypothermia pad means, said source of fluid pressure comprising a second closed fluid circuit including the outlet of said impeller portion and second heat exchange means.
Claim 3
Dependent Claim
147 words
In a hypothermia system, the combination including hypothermia pad means, fluid heat exchange means, fluid pressure operated impeller-pump means having an impeller portion and a pump portion each provided with a fluid inlet and a fluid outlet, a source of fluid pressure, means for connecting the inlet of said impeller portion to said source of fluid pressure, and a closed fluid circuit connecting the outlet of said pump portion to the inlet of said pump portion through said heat exchange means and said hypothermia pad means, said impeller-pump means including a housing defining an impeller chamber and a pump chamber, a shaft carried by said housing and extending into said impeller chamber and said pump chamber, a plurality of impeller blades disposed in said impeller chamber and fixed to said shaft, and a plurality of pump blades disposed in said pump chamber and fixed to said shaft.
Claim 4
Dependent Claim
147 words
In a hypothermia system, the combination including hypothermia pad means, fluid heat exchange means, fluid pressure operated impeller-pump means having an impeller portion and a pump portion each provided with a fluid inlet and a fluid outlet, a source of fluid pressure, means for connecting the inlet of said impeller portion to said source of fluid pressure, and a closed fluid circuit connecting the outlet of said pump portion to the inlet of said pump portion through said heat exchange means and said hypothermia pad means, said impeller-pump means including a housing defining an impeller chamber and a pump chamber, a shaft carried by said housing and extending into said impeller chamber and said pump chamber, a plurality of impeller blades disposed in said impeller chamber and fixed to said shaft, and a plurality of pump blades disposed in said pump chamber and fixed to said shaft.
Claim 5
Dependent Claim
20 words
The combination as set forth in claim 2 including a fluid passage connecting said impeller chamber with said pump chamber.
Claim 6
Dependent Claim
24 words
The combination as set forth in claim 3 wherein said shaft extends through the fluid passage connecting said impeller chamber with said pump chamber.
Claim 7
Dependent Claim
121 words
In a hypothermia system, the combination including hypothermia pad means, fluid heat excHange means, fluid pressure operated impeller-pump means having an impeller portion and a pump portion each provided with a fluid inlet and a fluid outlet, a source of fluid pressure, means for connecting the inlet of said impeller portion to said source of fluid pressure, and a closed fluid circuit connecting the outlet of said pump portion to the inlet of said pump portion through said heat exchange means and said hypothermia pad means, said source of fluid pressure comprising electric motor driven pump means and convective heat exchange means disposed in a second closed fluid circuit including the fluid inlet and the fluid outlet of said impeller portion.
Claim 8
Dependent Claim
121 words
In a hypothermia system, the combination including hypothermia pad means, fluid heat excHange means, fluid pressure operated impeller-pump means having an impeller portion and a pump portion each provided with a fluid inlet and a fluid outlet, a source of fluid pressure, means for connecting the inlet of said impeller portion to said source of fluid pressure, and a closed fluid circuit connecting the outlet of said pump portion to the inlet of said pump portion through said heat exchange means and said hypothermia pad means, said source of fluid pressure comprising electric motor driven pump means and convective heat exchange means disposed in a second closed fluid circuit including the fluid inlet and the fluid outlet of said impeller portion.
Claim 9
Dependent Claim
23 words
The combination as set forth in claim 5 wherein said second closed fluid circuit includes a fluid reservoir and is vented to atmosphere.
Claim 10
Dependent Claim
111 words
In a hypothermia system, the combination including hypothermia pad means, fluid heat exchange means, fluid pressure operated impeller-pump means having an impeller portion and a pump portion each provided with a fluid inlet and fluid outlet, a source of fluid pressure, means for connecting the inlet of said impeller portion to said source of fluid pressure, and a closed fluid circuit connecting the outlet of said pump portion to the inlet of said pump portion through said heat exchange means and said hypothermia pad means, said fluid heat exchange means including a thermoelectric heating-cooling unit, a D.C. power supply, and means electrically connecting said power supply to said thermoelectric heating-cooling unit.
Claim 11
Dependent Claim
111 words
In a hypothermia system, the combination including hypothermia pad means, fluid heat exchange means, fluid pressure operated impeller-pump means having an impeller portion and a pump portion each provided with a fluid inlet and fluid outlet, a source of fluid pressure, means for connecting the inlet of said impeller portion to said source of fluid pressure, and a closed fluid circuit connecting the outlet of said pump portion to the inlet of said pump portion through said heat exchange means and said hypothermia pad means, said fluid heat exchange means including a thermoelectric heating-cooling unit, a D.C. power supply, and means electrically connecting said power supply to said thermoelectric heating-cooling unit.
Claim 12
Dependent Claim
94 words
In a hypothermia system, the combination including hypothermia pad means, the thermoelectric heat exchange means, fluid pressure operated impeller-pump means having an impeller portion and a pump portion each provided with a fluid inlet and a fluid outlet, a first fluid circuit connecting the outlet of said pump portion to the inlet of said pump portion through said thermoelectric heat exchange means and said hypothermia pad means, fluid pump means, and a second fluid circuit connecting the outlet of said impeller portion to the inlet of said impeller portion through said fluid pump means.
Claim 13
Dependent Claim
94 words
In a hypothermia system, the combination including hypothermia pad means, the thermoelectric heat exchange means, fluid pressure operated impeller-pump means having an impeller portion and a pump portion each provided with a fluid inlet and a fluid outlet, a first fluid circuit connecting the outlet of said pump portion to the inlet of said pump portion through said thermoelectric heat exchange means and said hypothermia pad means, fluid pump means, and a second fluid circuit connecting the outlet of said impeller portion to the inlet of said impeller portion through said fluid pump means.
Claim 14
Dependent Claim
18 words
The combination as set forth in claim 8 wherein said second fluid circuit includes convective heat exchange means.
Claim 15
Dependent Claim
70 words
The combination as set forth in claim 9 wherein said impeller-pump means includes a housing defining an impeller chamber and a pump chamber, a shaft carried by said housing and extending into said impeller chamber and said pump chamber, a plurality of impeller blades disposed in said impeller chamber and fixed to said shaft, and a plurality of pump blades disposed in said pump chamber and fixed to said shaft.
Claim 16
Dependent Claim
20 words
The combination as set forth in claim 10 including a fluid passage connecting said impeller chamber with said pump chamber.
Claim 17
Dependent Claim
24 words
The combination as set forth in claim 11 wherein said shaft extends through the fluid passage connecting said impeller chamber with said pump chamber.
Claim 18
Dependent Claim
26 words
The combination as set forth in claim 12 including a D.C. power supply, and means electrically connecting said power supply to said thermoelectric heat exchange means.
Claim 19
Dependent Claim
21 words
The combination set forth in claim 13 wherein said second fluid circuit includes a fluid reservoir and is vented to atmosphere.
References Cited (Backward Citations)
US2260134A
Cited
US2726658A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |