Michael E Corcoran

US Patent:

6379368, Apr 30, 2002

Filed:

May 13, 1999

Appl. No.:

09/311508

Inventors:

Michael P. Corcoran - Oakdale MN
Peter M. Buonomo - Shorewood MN
Joseph A. Marino - Apple Valley MN

Assignee:

Cardia, Inc. - Burnsville MN

International Classification:

A61B 1700

US Classification:

606153

Abstract:

An occlusion device for the closure of atrial or ventricular septal defects, for the closure of patent ductus arteriosus, patent foramen ovale, or other vascular defects. The occlusion device comprises a center section extending in an axial direction, with upper and lower stranded wire fixation devices emanating from the center section. The stranded wire fixation devices have been heat treated and formed with a shape memory. The stranded wire fixation devices are formed of multiple wire strands and have atraumatic tips. Attached to the fixation devices are heparin treated sheets, which serve to occlude the opening and significantly reduce the occurrence of thrombosis at the device.

US Patent:

6656206, Dec 2, 2003

Filed:

Jan 23, 2002

Appl. No.:

10/055460

Inventors:

Michael P. Corcoran - Woodbury MN
Peter M. Buonomo - Shorewood MN
Joseph A. Marino - Apple Valley MN

Assignee:

Cardia, Inc. - Burnsville MN

International Classification:

A61B 1708

US Classification:

606213, 606151

Abstract:

A method of forming a PVA foam structure for use in an occlusion device such that the PVA foam structure comprises non-thrombogenic properties. The method comprises forming a PVA gel and incorporating heparin into the PVA gel. The PVA foam structure is then treated with the PVA gel and heparin mixture, such as by soaking the PVA foam structure in the gel.

US Patent:

6913614, Jul 5, 2005

Filed:

May 8, 2003

Appl. No.:

10/431717

Inventors:

Joseph A. Marino - Apple Valley MN, US
Michael P. Corcoran - Oakdale MN, US

Assignee:

Cardia, Inc. - Burnsville MN

International Classification:

A61B017/08

US Classification:

606213

Abstract:

A delivery system that allows a physician to deploy a medical device and refract both the catheter and delivery device while keeping the device connected to a safety tether. The tether is thin and extremely flexible, so it does not distort the tissue. The tether allows the physician to observe the placement of the medical device without having fully released the medical device and without tissue contortion caused by the stiffer catheter and delivery device. In addition, the device is easily retrievable if it is not positioned properly because it has not been fully released. This system also comprises a coupler which connects the medical device to the delivery device.

US Patent:

6921397, Jul 26, 2005

Filed:

May 27, 2003

Appl. No.:

10/445512

Inventors:

Michael P. Corcoran - Oakdale MN, US
Joseph A. Marino - Apple Valley MN, US

Assignee:

Cardia, Inc. - Burnsville MN

International Classification:

A61M025/16

US Classification:

604535

Abstract:

This invention relates to catheter delivery systems, and more specifically, to a tubular device with improved torque and flexure characteristics. The present invention is a tubular device having improved torque and flexure characteristics which uses a series of permanently interlocking independent segments to provide the necessary torque and flexure characteristics.

US Patent:

6960220, Nov 1, 2005

Filed:

Jan 22, 2003

Appl. No.:

10/349118

Inventors:

Joseph A. Marino - Apple Valley MN, US
Michael P. Corcoran - Oakdale MN, US

Assignee:

Cardia, Inc. - Burnsville MN

International Classification:

A61B017/00

US Classification:

606153

Abstract:

The present invention is an occlusion device having a support hoop. The support hoop increases the ability of the occlusion device to form a seal around the defect and adds additional structural strength to the device by allowing distribution of pressure along a 360 continuum.

US Patent:

6960224, Nov 1, 2005

Filed:

Jan 22, 2003

Appl. No.:

10/348864

Inventors:

Joseph A. Marino - Apple Valley MN, US
Michael P. Corcoran - Oakdale MN, US
Peter M. Buonomo - Shorewood MN, US

Assignee:

Cardia, Inc. - Burnsville MN

International Classification:

A61B017/08

US Classification:

606215

Abstract:

An occlusion device having laminated polyvinyl alcohol sheets for occluding a defect. The laminated polyvinyl alcohol sheets provide an increased tear strength to the sheets that allows the device to be fully retrievable through the same catheter used to deploy it. The laminated sheets are created by obtaining thin sheets of polyvinyl alcohol foam, arranging the sheets on one another, and applying heat and pressure to laminate the sheets together.

US Patent:

7087072, Aug 8, 2006

Filed:

Jan 22, 2003

Appl. No.:

10/348865

Inventors:

Joseph A. Marino - Apple Valley MN, US
Michael P. Corcoran - Oakdale MN, US

Assignee:

Cardia, Inc. - Burnsville MN

International Classification:

A61B 17/04

US Classification:

606213

Abstract:

This invention relates to an occlusion device for the heart, having an articulated center post which allows the device to better conform to the contours of the heart to increase sealing abilities and reduce breakage resulting from conformation pressure.

US Patent:

7115135, Oct 3, 2006

Filed:

Jan 22, 2003

Appl. No.:

10/348701

Inventors:

Michael P. Corcoran - Oakdale MN, US
Joseph A. Marino - Apple Valley MN, US

Assignee:

Cardia, Inc. - Eagan MN

International Classification:

A61B 17/00
A61B 17/08

US Classification:

606151, 606153

Abstract:

An occlusion device having at least five arms. Though the number of arms is increased, the diameter of each arm is reduced. As a result, the increased number of arms provides the desired tension as the occlusion device is deployed and provides the desired strength to hold the occlusion device in place and properly occlude the defect. At the same time, the reduced diameter of the arms improves the cycle life of the occlusion device. Furthermore, the increased number of arms provides for better sealing across the defect and reduces residual shunting.