1
John R Helland: Coronary sinus lead with atrial sensing capability. Pacesetter, Malcolm J Romano, November 14, 1995: US05466254 (242 worldwide citation)

A coronary sinus lead, for use in combination with an implanted pulse generator which may be a pacemaker or defibrillator or combination thereof. The coronary sinus lead can deliver an electrical charge to pace, cardiovert or defibrillate the heart, and can sense cardiac activity in the coronary sin ...


2
Clifton A Alferness, John R Helland: Intravenous cardiac lead with improved fixation and method. InControl, Richard O Gray Jr, February 7, 1995: US05387233 (148 worldwide citation)

An intravenous lead for use with a cardiac device implantable beneath the skin of a patient provides positive fixation for the lead when implanted in an artery or vein of the heart. The lead includes a lead body adapted to be fed into an artery or a vein of the heart of a patient and at least one el ...


3
John R Helland, Hong Li: Bipolar active fixation lead for sensing and pacing the heart. Pacesetter, Harold C Schloss, August 13, 1996: US05545201 (144 worldwide citation)

An implantable bipolar pacing lead having a bipolar active fixation electrode for use with a cardiac pacemaker. The bipolar active fixation electrode may include a pair of coaxial electrodes, separated by an intermediate insulator, formed into the shape of a helix. The bipolar electrode helix is pre ...


4
Phong D Doan, Kevin L Morgan, John R Helland, Sheldon Williams, Kerwyn Schimke, Christopher R Jenney: Implantable coronary sinus lead and lead system. Pacesetter, November 22, 2005: US06968237 (107 worldwide citation)

An implantable stimulation lead is disclosed for placement in the coronary sinus region and its associated coronary vessels overlying the left side of a patient's heart. The lead comprises at least one proximal connector; at least one tissue stimulation electrode; at least one conductor coupled betw ...


5
John R Helland, Kenneth B Stokes: Non-fibrosing cardiac electrode. Medtronic, Schroeder Siegfried Ryan & Vidas, July 5, 1977: US04033357 (89 worldwide citation)

Non-fibrosing implantable lead apparatus for muscle stimulation, such as cardiac stimulation, comprising an electrode formed from a non-thrombogenic conductive material, a conductor, a conductor encapsulating structure formed from a non-thrombogenic insulating material and a lodging structure for ho ...


6
Kevin L Morgan, John R Helland, Sheldon Williams, Yougandh Chitre, Andrew W McGarvey, Christopher Fleck, Jnyan Patel, Scott Salys, Kerwyn Schimke: Myocardial lead and lead system. Pacesetter, May 6, 2008: US07369901 (76 worldwide citation)

An implantable myocardial stimulation lead comprises a lead body having a distal end and a proximal end, and an electrical connector carried by the proximal end of the lead body. An electrode header carried by the distal end of the lead body has an axis and includes a helical fixation element extend ...


7
John R Helland: Lead with distal tip surface electrodes connected in parallel. Pacesetter, April 11, 2006: US07027852 (74 worldwide citation)

An body implantable stimulation lead is provided including tip electrode patterns and configurations producing low noise, clean sensed signals devoid of far field components, such sensed signals being generated irrespective of the direction of the incident depolarization wavefront. The invention als ...


8
Phong D Doan, John R Helland: Rotatable pin, screw-in pacing and sensing lead having improved tip and fluidic seal. Pacesetter, Malcolm J Romano, Lisa P Weinberg, October 10, 1995: US05456708 (64 worldwide citation)

A rotatable pin, screw-in type lead assembly includes a radiopaque element proximate the distal tip of the lead assembly for permitting direct, rapid fluoroscopic verification of the amount of extension of the helix electrode relative to the tip. The radiopaque element is preferably in the form of a ...


9
John R Helland: Method and system for determining lead position for optimized cardiac resynchronization therapy hemodynamics. Pacesetter, July 6, 2010: US07751882 (63 worldwide citation)

An electro-mechanical activation probe obtains information pertaining to both myocardial electrical activity and myocardial mechanical activity at each of a plurality of locations relative to the myocardium of a heart chamber. For each location, the temporal difference between a feature of the elect ...


10
Clifton A Alferness, John R Helland, Paul Kreyenhagen: Implantable lead having a steering distal guide tip. Richard O Gray Jr, July 2, 1996: US05531781 (63 worldwide citation)

A lead is provided which assists in the implantation of the lead within an artery or vein of a human heart. The lead includes a lead body having a distal end and a proximal end and at least one electrode carried by the lead body intermediate the distal end and the proximal end. The lead includes a g ...