51
David J Parins, Gerald S Szczech, Demitre M Nicoloff, Steven W Berhow: Bipolar scalpel for harvesting internal mammary artery. Everest Medical Corporation, Haugen and Nikolai, May 7, 1991: US05013312 (300 worldwide citation)

An bipolar electrosurgical instrument especially designed especially for use in freeing and rerouting of the internal mammary artery during coronary bypass surgery. It comprises a rigid pen-like handle having appropriate cut and coag control switches mounted thereon and a bendable tubular extension ...


52
Paul L Termin, Christopher H Porter: Radially expandable body implantable device. Schneider, Haugen and Nikolai, March 5, 1996: US05496277 (294 worldwide citation)

An open weave fixation device is secured to a distal end region of a catheter or other diagnostic or treatment device, for either temporarily or permanently fixing the device within a body cavity. In one approach, the fixation element is constructed of braided, helically wound filaments of resilient ...


53
David J Parins, Mark A Rydell, Peter Stasz: Ablation catheter with selectively deployable electrodes. Everest Medical Corporation, Haugen and Nikolai, October 15, 1991: US05057107 (294 worldwide citation)

A RF ablation catheter for removing athero-stenotic lesions or modifying the tissue characteristics of the interior walls of selected blood vessels is described. The catheter is characterized in having a tip member which during the initial placement of the catheter within the vascular system so that ...


54
Mark A Rydell: Bipolar laparoscopic instrument with replaceable electrode tip assembly. Everest Medical Corporation, Haugen and Nikolai, October 5, 1993: US05250047 (286 worldwide citation)

An electrosurgical instrument for use in endoscopic procedures features an electrode assembly which can be readily connected and disconnected from the remaining body of the instrument to allow a replacement electrode assembly to be substituted. The instrument comprises an elongated rigid tube having ...


55
Boaz Avitall: Loop electrode array mapping and ablation catheter for cardiac chambers. Haugen and Nikolai P A, September 17, 1996: US05555883 (284 worldwide citation)

A cardiac arrhythmia mapping and ablation catheter has a main catheter that is provided with a loop-shaped mapping and ablation system attached to its distal end in which the loop is optionally adjustable or of relatively fixed shape resumable upon deployment. The loop carries an electrode array inc ...


56
Claude Tihon, John H Burton, Bradford G Staehle, Michael A Mikulich: Resectable self-expanding stent. American Medical Systems, Haugen and Nikolai, October 18, 1994: US05356423 (282 worldwide citation)

A stent for transluminal implantation comprising a single-piece tubular member having a fenestrated side wall exhibiting a pattern of uniformly spaced openings defined by intersecting strands where the strands are integrally joined together at their points of intersection whereby the tubular member ...


57
Frank Dorman: Cardiac assist pump with steady rate supply of fluid lubricant. Regents of the University of Minnesota, Haugen and Nikolai, May 22, 1990: US04927407 (275 worldwide citation)

A centrifugal pump for left ventricle assist includes a pump housing forming an impeller chamber with inlet and outlet passages and enclosing an impeller rotatable to move blood through the impeller chamber, and a rotor chamber enclosing a rotor integral with the impeller and rotatable to drive the ...


58
Roger W Dahl, David K Swanson, Stephen J Hahn, Douglas J Lang, John E Heil: Subcutaneous defibrillation electrodes. Cardiac Pacemakers, Haugen and Nikolai, April 20, 1993: US05203348 (269 worldwide citation)

Implantable electrodes for defibrillation are formed of pluralities of electrode segments. Each of the segments is relatively long and narrow. The electrode segments can be parallel and spaced apart from one another a distance at least ten times the nominal width, with one end of each segment mounte ...


59
David J Parins, Richard K Poppe: Endoscopic bipolar biopsy forceps. Everest Medical, Haugen and Nikolai P A, February 18, 1997: US05603711 (268 worldwide citation)

A bipolar biopsy device comprising two biopsy tissue collecting receptacles wherein at least one biopsy tissue collecting receptacle is pivotable in relation to the other and wherein each biopsy tissue collecting receptacle supports an electrode portion thereon to which current can flow and a cuttin ...


60
Rodney W Salo, Julio C Spinelli, Bruce A Tockman: Cardiac stimulating apparatus and method for heart failure therapy. Cardiac Pacemakers, Haugen and Nikolai, August 2, 1994: US05334222 (268 worldwide citation)

A cardiac rhythm management device includes a dual-chamber pacemaker especially designed for treating congestive heart failure and a defibrillator as a back-up measure. The device incorporates a programmed microcontroller which is operative to adjust the AV delay of the pacemaker to a minimum or max ...



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