Patent US3061992A successfully refreshed from Google Patents.
Patent US4054523A successfully refreshed from Google Patents.
US4054523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cardiotomy reservoir with integral filter
Assignee: General Electric Co
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Filing: 1973-07-10
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Granted: 1977-10-18
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Expires: 1993-07-10
Abstract
Abstract A reservoir for holding and reprocessing foamy shed blood prior to reintroduction to a patient, the reservoir comprising a holding chamber divided by a filter into two sub-chambers, a foam killing chamber in open communication with one of the sub-chambers, and inlet and outlet ports for the blood. The apparatus removes cell debris and filterable products of hemolysis and avoids the need to return chemical foam killers and collapsed foam to the patient's body.
Inventors
- 👤 Donald R. Ingenito
- 👤 Gunnar E. Walmet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:38
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/02; A; A61; A61M; A61M1/00; A61M1/36; A61M1/3621; A61M1/3627
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
125 words
A reservoir for holding and reprocessing foamy shed blood prior to reintroduction to a patient, said reservoir comprising: a. a hollow holding and filtering chamber; b. an integral filter dividing said chamber into first and second sub-chambers; c. at least one blood inlet port in said first sub-chamber; d. a hollow foam killing chamber for collecting and collapsing blood foam in open communication with said first subchamber and removed from said integral filter, and positioned to permit the entrance of blood foam from said first sub-chamber and prevent the re-entrance or the entrance of the resultant collapsed blood into said first or second sub-chamber, said foam killing chamber including an air vent port; and e. at least one blood outlet port in said record sub-chamber.
Claim 2
Dependent Claim
125 words
A reservoir for holding and reprocessing foamy shed blood prior to reintroduction to a patient, said reservoir comprising: a. a hollow holding and filtering chamber; b. an integral filter dividing said chamber into first and second sub-chambers; c. at least one blood inlet port in said first sub-chamber; d. a hollow foam killing chamber for collecting and collapsing blood foam in open communication with said first subchamber and removed from said integral filter, and positioned to permit the entrance of blood foam from said first sub-chamber and prevent the re-entrance or the entrance of the resultant collapsed blood into said first or second sub-chamber, said foam killing chamber including an air vent port; and e. at least one blood outlet port in said record sub-chamber.
Claim 3
Dependent Claim
20 words
A reservoir as defined in claim 1 wherein said first sub-chamber is relatively larger in volume than said second sub-chamber.
Claim 4
Dependent Claim
26 words
A reservoir as defined in claim 2 wherein the volume of said first sub-chamber is from 5 to 20 times the volume of said second sub-chamber.
Claim 5
Dependent Claim
18 words
A reservoir as defined in claim 2 wherein said foam killing chamber is disposed within said first sub-chamber.
Claim 6
Dependent Claim
24 words
A reservoir as defined in claim 1 wherein said foam killing chamber is relatively smaller in volume than the volume of said first sub-chamber.
Claim 7
Dependent Claim
29 words
A reservoir as defined in claim 5 wherein the volume of said first sub-chamber is from about 2 to about 8 times the volume of said foam killing chamber.
Claim 8
Dependent Claim
21 words
A reservoir as defined in claim 1 wherein said foam killing chamber is disposed externally of said holding and filtering chamber.
Claim 9
Dependent Claim
21 words
A reservoir as defined in claim 1 wherein the filter element has openings in the range of 25 to 40 microns.
Claim 10
Dependent Claim
18 words
A reservoir as defined in claim 1 wherein said foam killing chamber includes a low density porous packing.
Claim 11
Dependent Claim
15 words
A reservoir as defined in claim 1 wherein said holding and filtering chamber is distensible.
Claim 12
Dependent Claim
137 words
A reservoir for holding and reprocessing foamy shed blood prior to reintroduction to a patient, said reservoir comprising: a. a hollow holding and filtering chamber; b. an integral filter dividing said chamber into first and second sub-chambers, said filter having openings in the range of 25 to 40 microns; c. at least one blood inlet port in said first sub-chamber; d. a hollow foam killing chamber for collecting and collapsing blood foam in open communication with said first sub-chamber and removed from said integral filter, and positioned to permit the entrance of blood foam from said first sub-chamber and prevent the re-entrance or the entrance of the resultant collapsed blood into said first or second sub-chamber; said foam killing chamber including an air vent port; and e. at least one blood outlet port in said second sub-chamber.
Claim 13
Dependent Claim
137 words
A reservoir for holding and reprocessing foamy shed blood prior to reintroduction to a patient, said reservoir comprising: a. a hollow holding and filtering chamber; b. an integral filter dividing said chamber into first and second sub-chambers, said filter having openings in the range of 25 to 40 microns; c. at least one blood inlet port in said first sub-chamber; d. a hollow foam killing chamber for collecting and collapsing blood foam in open communication with said first sub-chamber and removed from said integral filter, and positioned to permit the entrance of blood foam from said first sub-chamber and prevent the re-entrance or the entrance of the resultant collapsed blood into said first or second sub-chamber; said foam killing chamber including an air vent port; and e. at least one blood outlet port in said second sub-chamber.
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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) | 1980-10-17 | 1981-04-18 | 1981-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-17 | 1985-04-18 | 1985-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-17 | 1989-04-18 | 1989-10-18 | $7700.00 | Window Closed / Lapsed |