WILLIAM E COHN, M.D.
Radiology at Bertner Ave, Houston, TX

7717844, May 18, 2010

Jun 28, 2007

11/770254

William E. Cohn - Houston TX, US

Apaxis Medical, Inc. - Houston TX

A61F 2/00

600 37

Novel surgical devices for off-pump surgery are described herein. The disclosed apparatus employs a novel suction element that releasably couples to a surgical connector. In an embodiment, a surgical device comprises a suction element adapted to be releasably coupled to a surgical connector. The suction element has an opening for stabilizing said surgical connector against the surface of an organ by suction. The surgical device further comprises a flexible arm connected to the suction element. The flexible arm is capable of being fixed in a stationary position to hold the surgical connector and the organ in place. The novel suction element in combination with a flexible arm not only positions and stabilizes an organ during surgery, but also positions and stabilizes the surgical connector on the organ during a surgical procedure such as an LVAD implantation.

8226712, Jul 24, 2012

Jun 15, 2009

12/485015

Oscar H. Frazier - Houston TX, US
William E. Cohn - Houston TX, US

Newheart Medical Devices LLC - Houston TX

A61M 1/12

623 313

The present invention is TAH system for auto-regulating blood flow and maintaining the asymmetric pressure balance in the mammalian cardiovascular system by decreasing the resistance in blood flow and minimizing the pressure gradients to exploit the in-flow pressure sensitivities of continuous flow pumps. The system further includes laminar flow generating manifolds connected to the atrium at one end and attached to pumps linked to the great vessels at the other, such that the in-let flow sensitivities of the pumps are maximized to auto-regulate blood flow, providing adequate pulmonary and systemic arterial flow to support normal metabolism and end-organ function and maintain the appropriate asymmetric physiologic pressure balance between the systemic and pulmonary systems of the mammalian cardiovascular system.

2010026, Oct 21, 2010

Apr 21, 2010

12/764508

Aaron J. HJELLE - Champlin MN, US
Paul A. PIGNATO - Stacy MN, US
Robert G. WALSH - Lakeville MN, US
William E. COHN - Houston TX, US
Ann Margaret THOMAS - Plymouth MN, US

ACORN CARDIOVASCULAR, INC. - St. Paul MN

A61B 17/00

600 37

A device for delivery of a cardiac support device for treating cardiac disease of a heart includes a multistage deployment mechanism and an actuating mechanism for controlling the positions of the deployment mechanism. The deployment mechanism is operable to change between a retracted state and an extended state, and includes a plurality of independent stages, including, in one embodiment, a first stage including a guide structure for location adjacent a portion of the patient's heart when in the extended state. A second stage is movably coupled to the first stage, and is guided by the guide structure between the retracted and extended states. The second stage further releasably engages and supports the cardiac support device and positions the cardiac support device at the desired implantation location, guided by the guide structure of the stage. In some embodiments, the deployment mechanism may include additional stages. The actuating mechanism drives the deployment mechanism between the retracted and extended states, and independently controls the positions of the multiple stages of the deployment mechanism.

2011009, Apr 28, 2011

May 27, 2010

12/789260

Oscar H. Frazier - Houston TX, US
William Cohn - Houston TX, US

A61M 1/10

623 316

The present invention provides a total artificial heart system for auto-regulating flow and pressure balance. In one embodiment the system comprises an atrial reservoir comprising inlets and outlets connectable to a mammalian cardiovascular system and at least first and second continuous pumps connected to the atrial reservoir. In further embodiments, the system comprises an atrial reservoir comprising at least two atrial chambers, and a means for transmitting fluid pressure between the atrial chambers. The means for transmitting fluid pressure include, but are not limited to a diaphragm, an interatrial window, a flexible membrane, a valve, a filter, or combinations thereof. In another embodiment, the means for transmitting fluid pressure comprises an implantable diaphragm comprising an outer rim attachable to biological tissue and a membrane anchored at its periphery by said outer rim.

5101804, Apr 7, 1992

Sep 4, 1990

7/579003

William E. Cohn - Houston TX

Baylor College of Medicine - Houston TX

F24J 100, F61F 700, A61J 105

126263

The present invention relates to a device and method for warming biological fluids. The portable self-contained device which warms physiological fluids including blood is comprised of a reaction container which is capable of storing at least one chemical which when mixed with a second chemical will produce an exothermic chemical reaction, a mixing means for mixing the two chemicals to produce the exothermic chemical reaction, a heat exchanger to absorb heat from the exothermic reaction and transfer it to the physiological fluid or blood, a temperature regulating means to regulate the maximum temperature of the device and an insulating container for enclosing the reaction means, heat exchanger and temperature regulating means. The method of rapidly heating the stored cold physiological fluids including blood to about 39. degree. during infusion comprise the step of activating the physiological fluid warming device by mixing the chemicals to produce the exothermic chemical reaction and passing the physiological fluid or blood through the heat exchanger.

7727142, Jun 1, 2010

Mar 3, 2006

11/367758

Aaron J. Hjelle - Champlin MN, US
Paul Andrew Pignato - Stacy MN, US
Robert G. Walsh - Lakeville MN, US
William E. Cohn - Houston TX, US
Ann Margaret Thomas - Plymouth MN, US

Acorn Cardiovascular, Inc. - St. Paul MN

A61F 2/00

600 37, 600 16

A device for delivery of a cardiac support device for treating cardiac disease of a heart includes a multistage deployment mechanism and an actuating mechanism for controlling the positions of the deployment mechanism. The deployment mechanism is operable to change between a retracted state and an extended state, and includes a plurality of independent stages, including, in one embodiment, a first stage including a guide structure for location adjacent a portion of the patient's heart when in the extended state. A second stage is movably coupled to the first stage, and is guided by the guide structure between the retracted and extended states. The second stage further releasably engages and supports the cardiac support device and positions the cardiac support device at the desired implantation location, guided by the guide structure of the stage. In some embodiments, the deployment mechanism may include additional stages. The actuating mechanism drives the deployment mechanism between the retracted and extended states, and independently controls the positions of the multiple stages of the deployment mechanism.

2008031, Dec 25, 2008

Jun 20, 2008

12/142891

William E. Cohn - Houston TX, US
Aaron J. Hjelle - Champlin MN, US
Robert G. Walsh - Lakeville MN, US
Kevin Paul Bassett - Farmington MN, US

Acorn Cardiovascular, Inc. - St. Paul MN

A61F 2/00

600 37

A method for implanting a cardiac support device (CSD) on a patient's heart. An amount of contrast agent sufficient to cause structures on the heart to be visible upon fluoroscopic or other imaging is introduced into the pericardial space surrounding the heart. The heart and contrast agent are imaged to provide a visual indication of the location of the structures of the heart. The CSD is placed on the heart using the visual indications provided by the imaging.

7744527, Jun 29, 2010

Jun 28, 2007

11/770272

William E. Cohn - Houston TX, US

Apaxis Medical, Inc. - Houston TX

A61F 2/00, A61B 17/32

600 37, 606170

Novel surgical tools and methods for off-pump surgery are described herein. A novel coring system is disclosed which employs a balloon catheter and a coring tool which is adapted to be threaded on to a guide wire. The guide wire serves as a track upon which the coring tool is guided. Embodiments of the coring tool ensure complete removal and excision of cored tissue. In addition, the described coring system prevents blood loss during off-pump surgery. In an embodiment, a surgical coring tool comprises a hollow body having an open distal end and a closed proximal end. The open distal end has a cutting edge. The hollow body comprises a vacuum connection to apply suction from said hollow body. The surgical coring tool also comprises a hollow elongate member disposed coaxially within said hollow body. The elongate member is adapted to be inserted on to a guide wire.

2012026, Oct 18, 2012

Mar 26, 2010

13/261173

Aaron J. Hjelle - Champlin MN, US
Robert G. Walsh - Newport OR, US
William E. Cohn - Houston TX, US
Louis Labrousse - Bordeaux, FR

A61B 5/02

600508

A heart size measuring tool includes a tubular body, a flexible measuring cord having length indicia, a measuring cord support mechanism movable between retracted and extended states with respect to the body, and an actuating mechanism to move the measuring cord support mechanism. When in the retracted state the measuring cord support mechanism is positioned within the tubular body with the measuring cord in a collapsed position. When the measuring cord support mechanism is in the extended state the measuring cord extends around a portion of a heart to be measured. A scale on the body can be used in connection with the indicia on the measurement cord to provide a reading of the heart size.