1
Paul C Nardella: Fluid cooled ablation catheter. American Cardiac Ablation Co, Lahive & Cockfield, August 2, 1994: US05334193 (931 worldwide citation)

A thin, elongate and flexible ablation catheter, suitable for delivery to an internal organ, comprises a fluid delivery lumen centrally located within the catheter, and first and second electrodes disposed on an outer surface of the catheter. The electrodes preferably are helically oriented about th ...


2
Paul C Nardella: Fluid cooled electrosurgical probe for cutting and cauterizing tissue. American Cardiac Ablation Co, Lahive & Cockfield, January 24, 1995: US05383876 (641 worldwide citation)

An electrosurgical probe is disclosed which provides the ability to both cut and cauterize tissue. The probe includes at least one cauterization electrode mounted upon a distal portion of the electrode and adapted to deliver electrosurgical energy to tissue. Further, a central lumen is disposed with ...


3
Paul C Nardella: Fluid cooled electrosurgical cauterization system. American Cardiac Ablation Co, Lahive & Cockfield, August 30, 1994: US05342357 (548 worldwide citation)

An electrosurgical probe is disclosed which provides the ability to both cut and cauterize tissue. The probe includes at least one cauterization electrode mounted upon a distal portion of the electrode and adapted to deliver electrosurgical energy to tissue. Further, a central lumen is disposed with ...


4
Paul C Nardella: Ablation catheter positioning system. American Cardiac Ablation Co, Lahive & Cockfield, August 30, 1994: US05341807 (540 worldwide citation)

A multi-electrode cardiac catheter has pairs of electrodes connected to sensing circuitry to produce a differential signal. The sensing output is sharply defined and self-normalizing. Preferably a catheter ablation tip electrode is an electrode of one pair, and the differential signal becomes non-ze ...


5
Paul C Nardella: Fluid cooled electrosurgical cauterization system. American Cardiac Ablation Co, William C Geary III, Lahive & Cockfield, August 1, 1995: US05437662 (310 worldwide citation)

An electrosurgical probe is disclosed which provides the ability to both cut and cauterize tissue. The probe includes at least one cauterization electrode mounted upon a distal portion of the electrode and adapted to deliver electrosurgical energy to tissue. Further, a central lumen is disposed with ...


6
Paul C Nardella, Thomas A Wrublewski: Catheter positioning system. American Cardiac Ablation Co, Nutter McClennen & Fish, August 31, 1999: US05944022 (185 worldwide citation)

A system for detecting the position of a catheter in a patient includes three sets of reference electrodes, with one set disposed on each of the mutually orthogonal X, Y and Z axes. A signal processor measures the differential voltage indicative of impedance between a detection electrode disposed on ...


7
Paul C Nardella: Cardiac ablation catheter having resistive mapping electrodes. American Cardiac Ablation Co, Lahive & Cockfield, March 15, 1994: US05293868 (131 worldwide citation)

A cardiac ablation catheter includes a distal, energy delivering electrode and at least one sensing electrode proximal to the energy delivering electrode. The catheter communicates with an electrosurgical generator which provides electrical energy, such as a radio frequency energy, to the distal ele ...


8
Paul C Nardella, Thomas A Wrublewski: Catheter positioning system. American Cardiac Ablation Co, Nutter McClennen & Fish, April 18, 2000: US06050267 (120 worldwide citation)

A system for detecting the position of a catheter in a patient includes three sets of excitation electrodes, with one set disposed in each of three intersecting axes. A signal processor measures a voltage indicative of impedance between a detection electrode disposed on the catheter and each of the ...


9
Paul C Nardella: Apparatus and method for monitoring endocardial signal during ablation. American Cardiac Ablation Co, Lahive & Cockfield, October 25, 1994: US05357956 (101 worldwide citation)

An ablation catheter has an ablation electrode at a distal end coupled to an ablation power source through a low impedance coupling. The ablation electrode also functions as a sensing electrode, for monitoring the endocardial signal and preferably also tissue impedance during the ablation procedure, ...


10
Nardella Paul C: Ablation catheter positioning system. American Cardiac Ablation Co, GEARY William C III, January 6, 1994: WO/1994/000050 (5 worldwide citation)

A multi-electrode cardiac catheter (10) has pairs of electrodes (13) connected to sensing circuitry (31, 32, 40) to produce a differential signal. The sensing output is sharply defined and self normalizing. Preferably, a catheter ablation tip electrode (12) is an electrode of one pair, and the diffe ...