Patrick A Mccormick

US Patent:

58245537, Oct 20, 1998

Filed:

Feb 9, 1994

Appl. No.:

8/193712

Inventors:

Patrick J. McCormick - Honeoye Falls NY
James Jay Kaiser - Webster NY
Paul M. Eckardt - Rochester NY

Assignee:

Getinge/Castle, Inc. - Rochester NY

International Classification:

C12Q 122

US Classification:

436 1

Abstract:

Structure for evaluating the efficacy of sterilization apparatus using either steam or ethylene oxide as sterilant is disclosed. The structure includes an insert of porous material having a cavity formed therethrough for retaining a biological or chemical indicator. The porous material has homogeneous porosity throughout. The insert of porous material and indicator are enclosed within an outer covering which is relatively impervious to penetration of gases and which provides restricted pathways to air and sterilant. The outer covering is provided with removable portions which are removed when the structure is used to evaluate ethylene oxide sterilization. Removal of the portions enlarges the existing pathways for ingress and egress of gases which may be appropriate in certain efficacy testing.

US Patent:

47435372, May 10, 1988

Filed:

Dec 24, 1986

Appl. No.:

6/942506

Inventors:

Patrick J. McCormick - Henrietta NY
John R. Scoville - Henrietta NY

Assignee:

Castle Company - Rochester NY

International Classification:

C12M 124

US Classification:

435296

Abstract:

A sterility indicator which comprises means defining an elongated outer compartment having liquid impermeable and substantially non-gas absorptive walls, said compartment having a closed end and a first opening at a distal end thereof and a second opening which is gas transmissive and bacteria-impermeable disposed at least partially around the perimeter of said outer compartment and located near said first opening, with a predetermined number of viable microorganisms suitable for monitoring steam sterilization being confined within said outer compartment adjacent said second opening, and a predetermined number of viable microorganisms suitable for monitoring gas sterilization being confined within said outer compartment away from said second opening and opposite said distal end; a closure member normally closing said first opening and movable to a second position to also close said second opening; and an inner compartment containing a nutrient medium disposed within said outer compartment with said nutrient medium being out of direct contact with said microorganisms, said inner compartment being adapted to open in response to external pressure thereby permitting said nutrient medium to contact said microorganisms.

US Patent:

47176610, Jan 5, 1988

Filed:

Jan 21, 1986

Appl. No.:

6/820354

Inventors:

Patrick J. McCormick - Henrietta NY
John R. Scoville - Henrietta NY

Assignee:

Castle Company - Rochester NY

International Classification:

C12Q 122
C12M 116

US Classification:

435 31

Abstract:

The present invention is directed to sterility indicators of the self-contained biological type and provides a device that assures direct impingement of the sterilant onto the microproorganisms. In this manner, the sterilant exposure conditions experienced by the test organisms reflects the exposure conditions to which the articles in the sterilizer are subjected. The device of the invention provides that the microorganisms are not directly contiguous with the ampule containing the aqueous nutrient medium.