Henry M Gajewski

US Patent:

45057087, Mar 19, 1985

Filed:

Sep 27, 1982

Appl. No.:

6/424679

Inventors:

Henry M. Gajewski - Winnetka IL
Paul Measells - Libertyville IL

Assignee:

Baxter Travenol Laboratories, Inc. - Deerfield IL

International Classification:

A61J 100
A61M 500

US Classification:

604408

Abstract:

A method of storing blood components uses a blood component storage container which is made of a plasticized polyvinyl chloride formulation which includes a heat stabilizer system selected from the group consisting of salts of C. sub. 10 to C. sub. 26 saturated fatty acids present in an amount of less than about one percent by weight of the composition. Surprisingly, use of only minimal amounts of these higher molecular weight fatty acids results in an effectively heat stabilized product suited for mass production techniques. As a result, the total amount of the heat stabilizer which can possibly leach into blood plasma is significantly reduced. The material from which the container is made preferably includes an effective amount of a plasticizer which is also essentially nonextractable in blood plasma.

US Patent:

42106869, Jul 1, 1980

Filed:

Jun 19, 1978

Appl. No.:

5/917122

Inventors:

Henry Gajewski - Winnetka IL
Dean G. Laurin - Lake Zurich IL
Paul Measells - Libertyville IL
R. Daniel Webster - Wauconda IL

Assignee:

Baxter Travenol Laboratories Inc. - Deerfield IL

International Classification:

B32B 102
B65D 6538

US Classification:

428 35

Abstract:

A multiple-layered, autoclavable, flexible plastic sheet comprises (a) at least one first layer consisting essentially of 30 to 90 percent by weight of a block copolymer having thermoplastic rubbery characteristics and having rubbery olefin blocks and blocks of a polystyrene; and from 10 to 70 percent by weight of a polyolefin derived principally from at least one of propylene, ethylene and 4-methylpentene-1, said polyolefin having a Vicat Softening Temperature of about 120. degree. C. ; and (b) at least one second layer consisting essentially of a polyolefin derived principally by from at least one of propylene, ethylene, and 4-methylpentene-1 and being of semi-crystalline characteristics to exhibit low permeability to water vapor, the first and second layers being bonded together in alternating arrangement.

US Patent:

45073872, Mar 26, 1985

Filed:

Mar 9, 1983

Appl. No.:

6/471745

Inventors:

Henry M. Gajewski - Winnetka IL
Barry H. Vernick - McHenry IL
Paul E. Measells - Libertyville IL
Jan W. Garber - McHenry IL

Assignee:

Baxter Travenol Laboratories, Inc. - Deerfield IL

International Classification:

A01N 102

US Classification:

435 2

Abstract:

A method of storing a quantity of red blood cells uses a blood bag which comprises a plastic polyvinyl chloride formulation which contains from 5 to 30 percent by weight of a first plasticizer material which is essentially nonextractable by blood plasma stored in the bag up to 35 days at about 4. degree. C. ; and from 10 to 25 percent by weight of a second plasticizer which is significantly extracted by blood plasma stored in the bag up to 35 days at about 4. degree. C. and which, upon leaching, is capable of suppressing the formation of plasma hemoglobin.

US Patent:

43005594, Nov 17, 1981

Filed:

May 19, 1980

Appl. No.:

6/151448

Inventors:

Henry M. Gajewski - Winnetka IL
Paul E. Measells - Libertyville IL

Assignee:

Baxter Travenol Laboratories, Inc. - Deerfield IL

International Classification:

A61M 500
A61J 100

US Classification:

128272

Abstract:

Blood-compatible, chlorine-free polymers such as a flexible, non-toxic, sterilizable polyester plastic formulation may contain from 5 to 70 percent by weight of a blood-extractable plasticizer such as di-2-ethylhexylphthalate, to cause blood which is stored in contact with the polymer to exhibit a surprisingly low hemolysis rate when compared with corresponding polymers which are free of the plasticizer. Accordingly, blood bags, tubing and other medical blood-contacting devices may be advantageously made from these polymers.

US Patent:

42865972, Sep 1, 1981

Filed:

Apr 21, 1980

Appl. No.:

6/142290

Inventors:

Henry M. Gajewski - Winnetka IL
Gerald A. Grode - Grayslake IL
Paul E. Measells - Libertyville IL
Jeffrey E. Miripol - Evanston IL

Assignee:

Baxter Travenol Laboratories, Inc. - Deerfield IL

International Classification:

A61M 500
A61J 100

US Classification:

128272

Abstract:

Blood-compatible, chlorine-free polymers such as a flexible, non-toxic, sterilizable polyester plastic formulation may contain from 5 to 70 percent by weight of a blood-extractable plasticizer such as di-2-ethylhexyladipate, to cause blood which is stored in contact with the polymer to exhibit a surprisingly low hemolysis rate when compared with corresponding polymers which are free of the plasticizer. Accordingly, blood bags, tubing and other medical blood-contacting devices may be advantageously made from these polymers.

US Patent:

51146088, May 19, 1992

Filed:

Oct 12, 1990

Appl. No.:

7/596880

Inventors:

Robert M. Sluga - Gurnee IL
Randolph H. Watkins - Wonder Lake IL
Henry M. Gajewski - Winnetka IL
Jerry D. Fisher - McHenry IL
Dennis C. Berry - Woodstock IL

Assignee:

Baxter International Inc. - Deerfield IL

International Classification:

C11D 722
C11D 750
B08B 712
B08B 300

US Classification:

252162

Abstract:

A method of stabilizing chlorofluorocarbon compositions thereby is provided. The stabilized composition comprises a chlorofluorocarbon and a sufficient amount of an epoxidized, generally high molecular weight stabilizer having an oxirane content sufficient to effectively stabilize the chlorofluorocarbon. The stabilizer is preferably an epoxidized oil having a molecular weight in the range of about 300 to about 1,500 and an oxirane content of at least about 4%. The method includes the step of adding a sufficient amount of such a stabilizer to the chloroflurocarbon composition. The chlorofluorocarbon composition typically comprises chlorofluoromethane, chlorofluoroethane, mixtures thereof or a chlorofluorocarbon-alcohol azeotropic solution. Also provided is an improved continuous dialyzer cleaning method utilizing the stabilized chlorofluorocarbon composition.

US Patent:

53825268, Jan 17, 1995

Filed:

Mar 17, 1989

Appl. No.:

7/326449

Inventors:

Henry M. Gajewski - Winnetka IL
Barry H. Vernick - McHenry IL
Paul E. Measells - Libertyville IL
Jan W. Garber - McHenry IL

Assignee:

Baxter International Inc. - Deerfield IL

International Classification:

C12M 124

US Classification:

435296

Abstract:

A blood bag comprises a plastic polyvinyl chloride formulation in which the polyvinyl chloride formulation contains from 5 to 30 percent by weight of a first plasticizer material which is essentially nonextractable by blood plasma stored in the bag up to 35 days at about 4. degree. C. ; and from 10 to 25 percent by weight of a second plasticizer which is significantly extracted by blood plasma stored in the bag up to 35 days at about 4. degree. C.

US Patent:

41989830, Apr 22, 1980

Filed:

Apr 28, 1978

Appl. No.:

5/900965

Inventors:

Lawrence F. Becker - Chicago IL
Henry M. Gajewski - Winnetka IL

Assignee:

Baxter Travenol Laboratories, Inc. - Deerfield IL

International Classification:

A61M 2500
C08L 4304

US Classification:

128349R

Abstract:

A catheter, preferably a balloon-type catheter, is disclosed in which the catheter shaft is made of a thermoplastic material and thus may be extrudable, the shaft consisting essentially of (a) from 40 to 70 percent by weight of an elastic composition which comprises: from 50 to 99. 5 percent by weight of a block copolymer having thermoplastic rubber characteristics with a central, rubbery polyolefin block and terminal blocks of polystyrene, and optionally including up to about 45 percent by weight of polypropylene, plus from 0. 5 to 10 percent by weight of a cross-linked organic silicone elastomer; and (b) from 30 to 60 percent by weight of a hydrophobic oil-type plasticizer to provide the desired degree of softness to said elastic composition.