1
Kevin F Hahnen, Richard A Hillstead, Bryan D Knodel: Medical instrument. Cerebral Vascular Applications, Cook Alex McFarron Manzo Cummings & Mehler, June 29, 2004: US06755338 (685 worldwide citation)

A hydraulically actuated medical instrument includes an elongated shaft having proximal and distal ends, a hydraulically actuated end effector at the distal end of the shaft and a fluid flow path extending through the shaft to the end effector. The shaft may be capable of an angled configuration whe ...


2
Kevin F Hahnen, Gustavo Aguirre, Peter Kratsch: Arthroscopic surgical instruments. Symbiosis Corporation, David P Gordon, February 14, 1995: US05389104 (438 worldwide citation)

An arthroscopic surgical instrument includes a hollow tube with an actuator coupled to its proximal end and an end effector coupled to its distal end. The actuator and the end effector are coupled by a cylindrical push rod which passes through the hollow tube. The push rod includes a frangible link ...


3
Kevin F Hahnen, Tracie L Beideman: Loop electrodes for electrocautery probes for use with a resectoscope. Symbiosis Corporation, Testa Hurwitz & Thibeault, September 28, 1999: US05957923 (198 worldwide citation)

An electrocautery probe includes a distal loop electrode mounted between a pair of arms which are joined at their proximal ends to an electrode lead, and a mounting sleeve for slideably coupling the probe to the guide tube of a resectoscope. The arms are skewed from a longitudinal axis defined by th ...


4
Kevin F Hahnen, Richard A Hillstead, Bryan D Knodel: Medical instrument. Richard A Hillstead, Cook Alex, October 25, 2011: US08043328 (185 worldwide citation)

A hydraulically actuated medical instrument includes an elongated shaft having proximal and distal ends, a hydraulically actuated end effector at the distal end of the shaft and a fluid flow path extending through the shaft to the end effector. The shaft may be capable of an angled configuration whe ...


5
Jeffrey G Gold, Kevin F Hahnen, Mario J Martinez: Catheter having sections of variable torsion characteristics. Cordis Corporation, Gerstman & Ellis, August 6, 1991: US05037404 (152 worldwide citation)

A flexible catheter comprises at least one resilient, flexible, tubular layer in telescoping relation with, and bonded to, a tubular wire sheath. A first catheter section includes the wire strands at a first angle to each other. A second catheter section includes the wire strands at a second angle t ...


6
Kevin F Hahnen: Loop electrodes for electrocautery probes for use with a resectoscope. Symbiosis Corporation, David P Gordon, October 29, 1996: US05569244 (70 worldwide citation)

An electrocautery probe includes a distal loop electrode mounted between a pair of arms which are joined at their proximal ends to an electrode lead, and a mounting sleeve for slideably coupling the probe to the guide tube of a resectoscope. The loop electrode is formed with a relatively broad lower ...


7
Mario J Martinez, Jeffrey G Gold, Kevin F Hahnen: Apertured, reinforced catheter. Cordis Corporation, Gerstman & Ellis, October 29, 1991: US05061257 (61 worldwide citation)

A catheter defines a flexible, tubular body in which the tubular body carries a tubular reinforcing sleeve made of strands. By this invention the catheter defines at least one side hole which communicates through the tubular body and tubular reinforcing sleeve. Greater resistance against collapse is ...


8
Aaron V Kaplan, Kevin F Hahnen: Methods and apparatus for lead placement on a surface of the heart. Cerebral Vascular Applications, Faegre & Benson, October 27, 2009: US07610104 (60 worldwide citation)

The methods and apparatus for lead placement on a surface of the heart are employed using an elongated body having proximal and distal end portions. The body defines a lead receiving passageway extending between a proximal inlet and a distal outlet for receiving a lead therethrough for contact with ...


9
Gary R Dill, Kevin F Hahnen: Endoscopic urological biopsy forceps. Symbiosis Corporation, David P Gordon, October 29, 1996: US05569299 (53 worldwide citation)

An endoscopic urological biopsy forceps includes a hollow tube member with a control member extending therethrough, an actuator coupled to the proximal ends of the tube member and the control member and a jaw assembly coupled to the distal ends of the tube and control member. The jaw assembly includ ...


10
David Turkel, Kevin F Hahnen: Bipolar roller electrodes and electrocautery probes for use with a resectoscope. Symbiosis Corporation, David P Gordon, June 3, 1997: US05634924 (51 worldwide citation)

A bipolar roller electrode has a non-conductive base upon which two electrical conductors are placed with a gap between the conductors. The electrode is provided with a blind hole at each end thereof for rotatably mounting it between a pair of arms. Each of the two conductors preferably extends into ...