1
Richard D Penn, Keith Alan Miesel, Lee Stylos, Mark A Christopherson, Sudha Nagavarapu, Glenn M Roline: Device and method to measure and communicate body parameters. Medtronic, Shumaker & Sieffert P A, May 4, 2004: US06731976 (494 worldwide citation)

A system and method for measuring and communicating parameters of a brain, tissue, or other organs is disclosed. The system includes a sensor to sense the parameter of interest, an external device where the parameter may be displayed, processed or cause action to be taken, and a communication system ...


2
Michael F Hoey, Mark A Christopherson, Steven M Goetz: Apparatus and method for creating, maintaining, and controlling a virtual electrode used for the ablation of tissue. Medtronic, Thomas G Berry, Jeffrey J Hohenshell, February 1, 2005: US06849073 (467 worldwide citation)

The present invention provides an apparatus and a method for producing a virtual electrode within or upon a tissue to be treated with radio frequency alternating electric current, such tissues including but not limited to liver, lung, cardiac, prostate, breast, and vascular tissues and neoplasms. An ...


3
Michael F Hoey, Mark A Christopherson, Steven M Goetz: Apparatus and method for creating, maintaining, and controlling a virtual electrode used for the ablation of tissue. Medtronic, Dicke Billig & Czaja P A, June 25, 2002: US06409722 (442 worldwide citation)

The present invention provides an apparatus and a method for producing a virtual electrode within or upon a tissue to be treated with radio frequency alternating electric current. An apparatus in accordance with the present invention includes a supply of a conductive or electrolytic fluid to be prov ...


4
Mark A Christopherson, Chike O Onyekaba: Apparatus and method for creating, maintaining, and controlling a virtual electrode used for the ablation of tissue. Medtronic, Banner & Witcoff, March 25, 2003: US06537272 (393 worldwide citation)

The present invention provides an apparatus and a method for producing a virtual electrode within or upon a tissue to be treated with radio frequency alternating electric current, such tissues including but not limited to brain, liver, cardiac, prostate, breast, and vascular tissues and neoplasms. A ...


5
Michael F Hoey, Mark A Christopherson, Steven M Goetz: Apparatus and method for creating, maintaining, and controlling a virtual electrode used for the ablation of tissue. Medtronic, Dicke Billig & Czaja PLLC, January 30, 2007: US07169144 (286 worldwide citation)

The present invention provides an apparatus and a method for producing a virtual electrode within or upon a tissue to be treated with radio frequency alternating electric current, such tissues including but not limited to liver, lung, cardiac, prostate, breast, and vascular tissues and neoplasms. An ...


6
Mark A Christopherson, Johann J Neisz, John Hammargren: Respiratory effort detection method and apparatus. Medtronic, Harold R Patton, Daniel W Latham, Peter Forrest, August 31, 1999: US05944680 (268 worldwide citation)

A method of predicting critical points in patient respiration includes monitoring at least one characteristic of a respiratory effort waveform of a patient to detect a respiratory event. A refractory period is defined that includes a hard refractory period during which time the respiratory event can ...


7
Michael F Hoey, Mark A Christopherson, Steven M Goetz: Apparatus and method for creating, maintaining, and controlling a virtual electrode used for the ablation of tissue. Medtronic, Dicke Billig & Czaja PLLC, July 24, 2007: US07247155 (230 worldwide citation)

The present invention provides an apparatus and a method for producing a virtual electrode within or upon a tissue to be treated with radio frequency alternating electric current, such tissues including but not limited to liver, lung, cardiac, prostate, breast, and vascular tissues and neoplasms. An ...


8
Michael F Hoey, Mark A Christopherson, Steven M Goetz: Apparatus and method for creating, maintaining, and controlling a virtual electrode used for the ablation of tissue. Medtronic, Daniel W Latham, Timothy A Czaja, May 18, 2004: US06736810 (227 worldwide citation)

The present invention provides an apparatus and a method for producing a virtual electrode within or upon a tissue to be treated with radio frequency alternating electric current, such tissues including but not limited to liver, lung, cardiac, prostate, breast, and vascular tissues and neoplasms. An ...


9
Mark A Christopherson, Johann J Neisz: Method and apparatus for operating therapy system. Medtronic, Curtis Kinghorn, Peter Forrest, Daniel W Latham, August 8, 2000: US06099479 (174 worldwide citation)

A method for operating an implantable therapy system to conserve energy includes providing an implantable sensing device that generates a signal as a function of a physiological parameter of a patient during a treatment period. The signal is monitored during at least portions of the treatment period ...


10
Mark A Christopherson, John L Sommer, Johann J Neisz: Sensor, method of sensor implant and system for treatment of respiratory disorders. Medtronic, Curtis D Kinghorn, Daniel W Latham, Harold R Patton, October 17, 2000: US06132384 (170 worldwide citation)

An implantable sensing device includes a sensing element and a mounting element. The mounting element has a first end and a second end with a longitudinal axis therethrough. The sensing element is positioned at the first end of the mounting element with the mounting element having a length that is a ...