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US4134832A
Expired / Lapsed
US
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Method and device for treatment of blood
Assignee: Individual
•
Filing: 1977-09-28
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Granted: 1979-01-16
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Expires: 1997-09-28
Abstract
Abstract Uncoagulated blood is separated into components by placing the blood in a glass test tube, placing a porous, elastic body in the upper layer of the blood, and centrifuging such that the porous body in friction contact with the inner surface of the test tube is pressed down through the blood so as to form above the body a layer of serum overlying a layer of red cells which overlies the body.
Inventors
- 👤 Ken Heimreid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:25
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/50; B01L3/502; B01L3/5021; G; G01; G01N; G01N33/00; G01N33/48; G01N33/483; G01N33/487; G01N33/49; G01N33/491; B01L2300/00; B01L2300/06; B01L2300/0681; B01L3/50215; Y; Y10; Y10T; Y10T436/00; Y10T436/25; Y10T436/25375
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
97 words
A method of separating uncoagulated blood into components by centrifugation comprising: placing a sample of uncoagulated blood in a test tube of glass or having a glass-like inner surface; placing a porous, elastic body in the upper layer of the uncoagulated blood sample; and centrifuging the test tube and blood sample to cause the porous body, in frictional contact with the inner surface of the test tube to press through the blood sample so as to effect above the porous body a layer of serum overlying a layer of red blood corpuscles which overlies the porous body.
Claim 2
Independent Claim
97 words
A method of separating uncoagulated blood into components by centrifugation comprising: placing a sample of uncoagulated blood in a test tube of glass or having a glass-like inner surface; placing a porous, elastic body in the upper layer of the uncoagulated blood sample; and centrifuging the test tube and blood sample to cause the porous body, in frictional contact with the inner surface of the test tube to press through the blood sample so as to effect above the porous body a layer of serum overlying a layer of red blood corpuscles which overlies the porous body.
Claim 3
Dependent Claim
20 words
A method as in claim 1 wherein said uncoagulated blood is precentrifuged without the presence of a porous elastic body.
Claim 4
Dependent Claim
23 words
A method as in claim 1 wherein said porous body moves all the way to the bottom of the test tube during centrifugation.
Claim 5
Dependent Claim
26 words
A method as in claim 1 wherein centrifugation and movement of the porous body effect a clump of fibrin between said serum layer and corpuscle layer.
Claim 6
Dependent Claim
24 words
A method as in claim 2 wherein the blood is heparin blood and wherein the proous elastic body is impregnated with a defibrinizing substance.
Claim 7
Dependent Claim
13 words
A method as in claim 5 wherein said defibrinizing substance is protamine sulfate.
Claim 8
Dependent Claim
75 words
Apparatus for separating uncoagulated blood into components during centrifuging comprising a test tube of glass or having a glass-like surface, and a porous elastic body insertable into said test tube so as to be in frictional contact with the inside thereof, said body having embedded therein at least one ballast body and being movable through the uncoagulated blood during centrifugation so as to come to rest below a red-cell layer which underlies a serum layer.
Claim 9
Dependent Claim
75 words
Apparatus for separating uncoagulated blood into components during centrifuging comprising a test tube of glass or having a glass-like surface, and a porous elastic body insertable into said test tube so as to be in frictional contact with the inside thereof, said body having embedded therein at least one ballast body and being movable through the uncoagulated blood during centrifugation so as to come to rest below a red-cell layer which underlies a serum layer.
Claim 10
Dependent Claim
15 words
Apparatus as in claim 5 wherein said porous elastic body is made of plastic foam.
Claim 11
Dependent Claim
13 words
Apparatus as in claim 6 wherein said ballast body is a glass bead.
References Cited (Backward Citations)
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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) | 1982-01-15 | 1982-07-17 | 1983-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-15 | 1986-07-17 | 1987-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-15 | 1990-07-17 | 1991-01-16 | $7700.00 | Window Closed / Lapsed |