1
David L Thompson, Robert M Bennett, Glenn M Roline: Telemetry system for a medical device. Medtronic, Robert C Beck, John L Rooney, Joseph F Breimayer, December 3, 1985: US04556063 (397 worldwide citation)

A data telemetry system for use with implanted medical devices for transmitting digital and analog data to a remote receiver by enabling different combinations of fixed and variable value current sources according to a telemetry logic code to energize a tank coil and produce a ringing type of variab ...


2
Stephen R Duggan: Drug administration device. Medtronic, John L Rooney, Joseph F Breimayer, Robert C Beck, September 8, 1987: US04692147 (396 worldwide citation)

An implantable drug administration device can be non-invasively programmed to change both the dosage amount and the dosage interval. Verification of received dosage and interval commands is being achieved by means of an audio transducer which is attached to the device case. Application of a magnet o ...


3
Kenneth M Anderson, Dennis A Brumwell: Rate adaptive pacer. Medtronic, Robert C Beck, John L Rooney, Joseph F Breimayer, January 31, 1984: US04428378 (393 worldwide citation)

An activity sensor mounted within the pacer detects the general activity level of the patient and alters the escape interval of the pacer between a preset minimum and maximum in response to the detected activity level of the patient.


4
Harold T Markowitz: Marker channel telemetry system for a medical device. Medtronic, Robert C Beck, John L Rooney, Joseph F Breimayer, February 15, 1983: US04374382 (341 worldwide citation)

A marker channel telemetry system for use with a pacemaker or other medical device for transmitting event identifying codes to a remote receiver to indicate the occurrence of specific events such as sensed and paced events in a dual chamber pacemaker. The structure of the system includes latches to ...


5
Michael J Kallok: Method and apparatus for low energy endocardial defibrillation. Medtronic, Joseph F Breimayer, Robert C Beck, John L Rooney, March 1, 1988: US04727877 (306 worldwide citation)

Ventricular fibrillation and other tachyarrhythmias are controlled by delivery of two sequential impulses to two pairs of electrodes placed partially within or adjacent to the heart. One electrode pair is provided by an endocardial lead which includes a distal electrode adapted to reside in the apex ...


6
Kenneth M Anderson, Dennis A Brumwell: Implantable dynamic pressure transducer system. Medtronic, Robert C Beck, John L Rooney, Joseph F Breimayer, December 4, 1984: US04485813 (293 worldwide citation)

Pressure and motion transducer, and cooperating circuitry for an implantable medical device is disclosed. The system includes a clock for the pulse excitation of a dynamic motion transducer and further includes circuitry for recovering the modulated signal from the transducer.


7
Theodore Adams: Automatic implantable defibrillator and pacer. Medtronic, Robert C Beck, Joseph F Breimayer, John L Rooney, September 15, 1987: US04693253 (289 worldwide citation)

A defibrillator/pacer having separate energy storage circuits for pacing and defibrillating. The pacing energy storage is charged from residual energy from the defibrillator source to permit high energy pacing after defibrillation. In operation, energy is transferred from the defibrillation energy s ...


8
Pierre G E Wielders, Robert Leinders: Energy converter for implantable cardioverter. Medtronic, Joseph F Breimayer, Robert C Beck, John L Rooney, October 22, 1985: US04548209 (224 worldwide citation)

An implantable medical device to deliver cardioverting energy to cardiac tissue in synchrony with detected ventricular depolarizations having a DC-DC flyback converter. The primary coil of the converter is periodically coupled and decoupled to ground by a timing circuit to effect charging of a high ...


9
Douglas P Zipes: Synchronous intracardiac cardioverter. Medtronic, Robert C Beck, John L Rooney, Joseph F Breimayer, May 24, 1983: US04384585 (178 worldwide citation)

An implantable medical device to deliver cardioverting energy to cardiac tissue in synchrony with detected ventricular depolarizations. The energy renders refractory, areas of the heart associated with a reciprocating or automatic tachycardia, thus reverting these tachyarrhythmias to normal sinus rh ...


10
Barouh V Berkovits, Menashe B Waxman, William J Combs: Rate scanning demand pacemaker and method for treatment of tachycardia. Medtronic, Joseph F Breimayer, John L Rooney, Robert C Beck, March 25, 1986: US04577633 (165 worldwide citation)

A self-adapting demand pacemaker that recognizes the tachycardia from the intrinsic signals and initiates treatment in the following manner: First, the escape interval of the demand pacemaker is shortened to be identical to the cycle length of the tachycardia, then to overdrive the tachycardia the p ...