Joseph L Schopen

US Patent:

40489965, Sep 20, 1977

Filed:

Jun 14, 1976

Appl. No.:

5/695703

Inventors:

Herbert Mittleman - Deerfield IL
Joseph L. Schopen - Crystal Lake IL

Assignee:

Baxter Travenol Laboratories, Inc. - Deerfield IL

International Classification:

A61M 500

US Classification:

128214R

Abstract:

A dual injection site for use in transmitting parenteral fluid is provided in the illustrative embodiment, by joining a pair of symmetrically shaped members each having a passage serving as either an inlet or an outlet for parenteral fluid flow. A pair of pierceable, self-sealing diaphragms are sandwiched between the members and each diaphragm is aligned with a respective passage.

US Patent:

43721001, Feb 8, 1983

Filed:

Dec 17, 1981

Appl. No.:

6/331495

Inventors:

Robert A. Miller - Crystal Lake IL
Kenneth W. Larson - Keene NH
Joseph L. Schopen - Crystal Lake IL

Assignee:

Baxter Travenol Laboratories, Inc. - Deerfield IL

International Classification:

B65B 306
B65B 326

US Classification:

53428

Abstract:

A process and apparatus for mixing at least two parenteral solutions, sterilizing the resulting mixture, and transferring the sterilized mixture into an extensible, plastic receiving bag. The apparatus includes a mixing chamber into which the solutions can be delivered, a bacterial organism retentive filter for sterilizing the mixture of the solutions received from the chamber, such a receiving bag, tubing for transferring each of the solutions to be chamber, and second tubing for transferring the sterilized mixture from the filter to the bag. All are combined and then sterilized as a unit. In one embodiment of the invention, the bag is placed in a vacuum chamber to facilitate transfer of the mixture through the apparatus and the mixing chamber has a baffle or system of baffles for creating turbulence in the solutions while they are being mixed. The diameter and length of each tubing leading into the chamber from a solution holding container is preselected with respect to the viscosity of the solution in that holding container, so that both solutions reach the chamber at the same time or in a selected order and are mixed in an equal or preselected proportion therein.