John A Leahey

US Patent:

7141097, Nov 28, 2006

Filed:

Jan 13, 2004

Appl. No.:

10/755980

Inventors:

John A. Leahey - Woodstock IL, US

Assignee:

Filtertek Inc. - Hebron IL

International Classification:

B01D 19/00

US Classification:

96 6, 95 46, 604126, 604406, 21032164

Abstract:

A filter for filtering intravenous fluid includes a base member having one or more vent holes and a fluid inlet chamber; a cap member having an inlet, an outlet, and a fluid outlet chamber; hydrophilic filtration media captured between the base member and the cap member, separating the inlet chamber and the outlet chamber; the filter having a flow path such that fluid passing into the filter housing through the inlet passes through the hydrophilic filtration media before passing out the outlet; one piece of hydrophobic vent media positioned over the vent hole and secured to the base member; and the base member having a center section and side sections forming the inlet chamber, the side sections extending from the center section towards the perimeter of the base member and being formed with sloped walls so as to encourage any air in the inlet chamber to flow towards the vent.

US Patent:

7520489, Apr 21, 2009

Filed:

Jun 17, 2004

Appl. No.:

10/559992

Inventors:

Ricky R. Ruschke - Woodstock IL, US
Edward Kandel - McHenry IL, US
Michael G. Leonhard - West Bend WI, US
Mark A. Kinsley - Lake Geneva WI, US
John A. Leahey - Woodstock IL, US
Jan W. M. Mijers - Haarlem, NL
Ronald J. Kay - Barrington IL, US

Assignee:

Filtertek Inc. - Hebron IL

International Classification:

F16K 51/00
F16L 29/00
F16L 37/28

US Classification:

2511497, 2511491, 604249, 604256

Abstract:

A fluid handling device, such as a needlefree access device, includes a housing having an inlet and an inlet channel; and a flow control member comprising a combination outlet, biasing and piston member. The flow control member includes a piston section moveable between a closed position in which the piston section is inside the housing below the inlet channel but allows fluid to flow through the inlet channel; a biasing section connected to the piston section that normally biases the piston section into the inlet channel; and an outlet section connected to the biasing section having an outlet fitting in fluid communication with the inside of the housing.

US Patent:

8038123, Oct 18, 2011

Filed:

Mar 10, 2009

Appl. No.:

12/401486

Inventors:

Ricky R. Ruschke - Woodstock IL, US
Edward Kandel - McHenry IL, US
Michael G. Leonhard - West Bend WI, US
Mark A. Kinsley - Lake Geneva WI, US
John A. Leahey - Woodstock IL, US
Jan W. M. Mijers - Haarlem, NL
Ronald J. Kay - Barrington IL, US

Assignee:

Filtertek Inc. - Hebron IL

International Classification:

F16K 51/00

US Classification:

2511497, 2511496

Abstract:

A fluid handling device, such as a needlefree access device, includes a housing having an inlet and an inlet channel; and a flow control member comprising a combination outlet, biasing and piston member. The flow control member includes a piston section moveable between a closed position in which the piston section is in the inlet channel and an open position in which the piston section is inside the housing below the inlet channel but allows fluid to flow through the inlet channel; a biasing section connected to the piston section that normally biases the piston section into the inlet channel; and an outlet section connected to the biasing section having an outlet fitting in fluid communication with the inside of the housing. The piston section, biasing section and outlet section are connected together such that they can be handled as one piece when assembled with the housing to make the needlefree access device. The access device can be configured as a Y-site access device, or used on other devices such as an IV bag.

US Patent:

58274294, Oct 27, 1998

Filed:

Jan 18, 1996

Appl. No.:

8/588231

Inventors:

Ricky R. Ruschke - McHenry IL
John A. Leahey - Woodstock IL

Assignee:

Filtertek Inc. - Hebron IL

International Classification:

B01D 6300

US Classification:

21032175

Abstract:

An intravenous filter device comprises a filter housing having a front side, a back side, a first end, a second end, an inlet and an outlet, the housing containing a hydrophilic filtration media and defining a flow path such that intravenous fluid entering the housing through the inlet passes through the filtration media before passing out of the housing through the outlet. Inlet and outlet tubing connectors, both preferably attached to the front side of the filter housing, form, respectively, the housing inlet and outlet. In the preferred embodiment the connectors are raised above the front side or the housing such that tubing connected to the connectors does not intersect the front side of the housing. At least one vent hole in the housing provides a passageway for gas to escape from the housing, the vent hole being preferably open to the front side of the housing. A hydrophobic membrane is positioned between the vent hole and the flow path at a position along the flow path between the inlet and the hydrophilic filtration media.

US Patent:

42561051, Mar 17, 1981

Filed:

Feb 28, 1979

Appl. No.:

6/016267

Inventors:

John J. Leahey - Libertyville IL
Andrew J. Muetterties - Gages Lake IL
Joseph N. Genese - Waukegan IL

Assignee:

Abbott Laboratories - North Chicago IL

International Classification:

A61M 514

US Classification:

128214G

Abstract:

Equipment sets for the sequential administration of medical liquids wherein a primary liquid can be administered at a flow rate independent of the flow rate of a secondary liquid, and including a barrier substantially impervious to air to prevent the inadvertent administration of air when the secondary liquid is depleted. The sets of this invention have a tube of reduced diameter to restrict the flow of primary liquid to a predetermined rate.