1
Donald Cohen: Suction ablation catheter. Cordis Corporation, Gerstman & Ellis, May 23, 1989: US04832048 (272 worldwide citation)

A suction ablation catheter, for use in inactivating portions of the heart's conduction system to prevent abnormal heartbeat rates, comprises a tubular body having an open, distal end and a proximal aperture for applying suction through the catheter and through the distal end. The catheter also has ...


2
Donald Cohen: Apparatus for locating and ablating cardiac conduction pathways. Cordis Corporation, Tarolli Sundheim & Covell, November 22, 1988: US04785815 (247 worldwide citation)

Apparatus for locating and ablating cardiac conduction pathways is provided herein. This includes a catheter tube which carries, at its distal end, at least one electrode for sensing membrane potentials within a heart. The catheter also carries a device for ablating at least a portion of the thus lo ...


3
Donald Cohen, Derek J Daw, George F Kick, George M Acosta: Apparatus and method for venous ligation. Endovascular, John L Rogitz, August 1, 1995: US05437664 (243 worldwide citation)

A minimally-invasive surgery apparatus for causing the lumen of a vein to collapse to prevent blood flow through the vein, e.g., a varicose vein or a side branch of the saphenous vein, includes an electrode which is electrically connected to a power source, and the electrode is percutaneously advanc ...


4
Donald Cohen, Derek J Daw, George F Kick, George M Acosta: Method for tubal electroligation. Endovascular, John L Rogitz, September 17, 1996: US05556396 (243 worldwide citation)

A minimally-invasive surgery apparatus for causing the lumen of a vein to collapse to prevent blood flow through the vein, e.g., a varicose vein or a side branch of the saphenous vein, includes an electrode which is electrically connected to a power source, and the electrode is percutaneously advanc ...


5
Donald Cohen: Flexible endoscope with hypotube activating wire support. Neuro Navigational Corporation, John L Rogitz, June 7, 1994: US05318526 (72 worldwide citation)

An endoscope has a handle and a bendable tube extending distally away from the handle. The tube has a selectively deflectable distal segment. An activating wire is connected to the distal segment and to the handle, and the handle has a knob which can be turned to impart force to the wire and thereby ...


6
Donald Cohen, John Aoki: Advancer for surgical instrument. Neuro Navigational Corporation, John L Rogitz, April 26, 1994: US05306272 (61 worldwide citation)

A device for axially advancing a surgical instrument into the brain of a patient includes an advancer that is engageable with the gooseneck of a surgical apparatus. The is axially telescoping, and the advancer can selectively grip the surgical instrument. Accordingly, the surgical instrument can be ...


7
Donald Cohen, Derek J Daw, George F Kick, George M Acosta: Apparatus and method for venous ligation. Endovascular, John L Rogitz, July 1, 1997: US05643257 (60 worldwide citation)

A minimally-invasive surgery apparatus for causing the lumen of a vein to collapse to prevent blood flow through the vein, e.g., a varicose vein or a side branch of the saphenous vein, includes an electrode which is electrically connected to a power source, and the electrode is percutaneously advanc ...


8
Anthony A Nobles, Donald Cohen: Detachable tip optical valvulotome. John L Rogitz, February 8, 1994: US05284478 (38 worldwide citation)

An optical valvulotome having a replaceable blade head for in situ cutting of venous valves has a catheter that can be pushed through a vein. An anchor is attached to the catheter, and a cutting head can be releasably engaged with the anchor to cut the valves as the catheter is pushed through the ve ...


9
Donald Cohen: Optical fiber pressure transducer. Cordis Corporation, Tarolli Sundheim & Covell, November 3, 1987: US04703757 (29 worldwide citation)

A catheter houses an elongated flexible fiber optic member having a light transmitting core for transmitting light received at its proximal end to its distal end at which the light is reflected back to the proximal end. The fiber optic member is coaxially surrounded by cladding throughout essentiall ...


10
Donald Cohen, Lance Kumm, John Aoki, Rith N Kimm, Shea Bassett: Neuro endoscope for shunt. Neuro Navigational Corporation, John L Rogitz, October 17, 1995: US05458606 (22 worldwide citation)

A shunt for relieving hydrocephalus has a closed distal end and an aperture formed in the distal end. A hollow hypotube has a distal end, and the hypotube holds an image fiber which protrudes beyond the distal end of the hypotube. The hypotube is positioned in the shunt with the distal end of the hy ...