Sean D Mackey

US Patent:

20130102994, Apr 25, 2013

Filed:

Aug 30, 2012

Appl. No.:

13/600060

Inventors:

Martin J. Gibler - West Chester OH, US
Mark A. Bennett - Loveland OH, US
Kenneth R. Waeber - Milford OH, US
Kenneth E. Hogue - Chapel Hill NC, US
Christoph L. Gillum - Middletown OH, US
Patrick A. Harrell - Loveland OH, US
David A. Parrott - Cincinnati OH, US
Sean E. Mackey - Grayslake IL, US
Rajkumar V. Conjeevaram - Lake bluff IL, US
Thomas Rebne - Woodstock GA, US
Bradley A. Clark - High Point NC, US
Jeremy L. Hemingway - Cincinnati OH, US
Ji Zhou - Grayslake IL, US
Bryan L. Wiesner - Lake Forest IL, US

International Classification:

A61M 5/315
B65B 1/04

US Classification:

604506, 604221, 53440

Abstract:

A syringe containing a high water content product and for use in a drug infusion system is provided. The syringe includes a plunger carrying front and rear o-rings made of a diene rubber compound such as chlorobutyl rubber or bromobutyl rubber to impart very low gas permeability characteristics to the o-rings. The plunger may be molded as a single part or in two parts. If molded as one part with radially-engaging mold portions, the seal glands in the plunger may include parting lines from the mold. If molded as two parts with axially-engaging mold portions, the front seal gland may include a sealing surface and under cut that has no parting line. The o-rings may be surface treated with a lubricant to improve sealing where the molding process gives rise to parting lines in the seal glands.

US Patent:

20190240416, Aug 8, 2019

Filed:

Feb 4, 2019

Appl. No.:

16/267318

Inventors:

- North Chicago IL, US
MARK A. BENNETT - LOVELAND OH, US
KENNETH R. WAEBER - MILFORD OH, US
KENNETH E. HOGUE - CHAPEL HILL NC, US
CHRISTOPH L. GILLUM - MIDDLETOWN OH, US
PATRICK A. HARRELL - LOVELAND OH, US
DAVID A. PARROTT - CINCINNATI OH, US
SEAN E. MACKEY - GRAYSLAKE IL, US
RAJKUMAR V. CONJEEVARAM - LAKE BLUFF IL, US
THOMAS REBNE - WOODSTOCK GA, US
BRADLEY A. CLARK - HIGH POINT NC, US
JEREMY L. HEMINGWAY - CINCINNATI OH, US
JI ZHOU - GRAYSLAKE IL, US

International Classification:

A61M 5/315
A61M 5/145
B65B 1/04

Abstract:

A syringe containing a high water content product and for use in a drug infusion system is provided. The syringe includes a plunger carrying front and rear o-rings made of a diene rubber compound such as chlorobutyl rubber or bromobutyl rubber to impart very low gas permeability characteristics to the o-rings. The plunger may be molded as a single part or in two parts. If molded as one part with radially-engaging mold portions, the seal glands in the plunger may include parting lines from the mold. If molded as two parts with axially-engaging mold portions, the front seal gland may include a sealing surface and under cut that has no parting line. The orings may be surface treated with a lubricant to improve sealing where the molding process gives rise to parting lines in the seal glands.