1
Zinon C Possis: Heart valve prosthesis. St Jude Medical, Wayne A Sivertson, Lew Schwartz, March 14, 1978: US04078268 (90 worldwide citation)

A heart valve prosthesis having an annular base carrying two pivoting valving members for use in a heart to control the flow of blood. The valving members are pivotally mounted on the annular base for pivotal movement about separate axes spaced from the center of the base. In one form of the prosthe ...


2
Ronald H Rockland, Thomas L Jirak: Demand anti-arrhythmia pacemaker. Medtronic, Wayne A Sivertson, May 9, 1978: US04088140 (79 worldwide citation)

A demand anti-arrhythmia pacemaker having a plurality of electrodes adapted for connection to a heart for sensing depolarizations. A first responsive circuit provides stimulation signals to at least one area of the heart if a depolarization corresponding to a natural heartbeat fails to occur within ...


3
Orin B Johnston: Heat bonding device. Lew Schwartz, Wayne A Sivertson, June 22, 1976: US03964958 (67 worldwide citation)

A device for heat bonding thermoplastic materials. At least one pressure chamber having a diaphragm is spaced from a supporting surface with the diaphragm and supporting surface in opposing relation to each other. Materials to be bonded are positioned between the pressure chamber diaphragm and suppo ...


4
Michael A Trombley: Percutaneous intradermal electrical connection system and implant device. Medtronic, Wayne A Sivertson, Lew Schwartz, June 22, 1976: US03964470 (61 worldwide citation)

A percutaneous intradermal electrical connection system and implant device, the implant device including a flange and a neck extending from the flange. The neck has a cavity in its end and is provided with a lip for inhibiting the growth of epithelial or connective tissue over the neck cavity. A con ...


5
Nicholas P D Smyth: Transvenous electrode. Medtronic, Lew Schwartz, Wayne A Sivertson, February 24, 1976: US03939843 (54 worldwide citation)

A transvenous lead including a conductor encased in an insulating material which is generally inert in body fluids and tissues, the conductor being connected to an exposed, electrically conductive electrode at, or adjacent to, the lead terminus. At least one tine extends from the casing adjacent the ...


6
Lee R Bolduc, Eugene A Dickhudt: Dispensing instrument. Population Research Incorporated, Lew Schwartz, Wayne A Sivertson, April 6, 1976: US03948259 (54 worldwide citation)

A fluid dispensing instrument and method for placing a material in the uterine cavity and moving the material from the uterine cavity to the canals of the Fallopian tubes of a female. The instrument has an elongated probe carrying an expandable sleeve. A housing connected to the probe has a chamber ...


7
Lyle A Ware: Body implantable stimulator with novel connector and method. Medtronic, Wayne A Sivertson, March 6, 1979: US04142532 (50 worldwide citation)

A body implantable stimulator having a signal generator and lead electrically and mechanically interconnected by a preformed connector. The connector carries terminals to establish electrical communication between the signal generator and the lead, passageways being provided in the connector body to ...


8
Thomas L Jirak: Automatic threshold following cardiac pacer. Medtronic, Lew Schwartz, Wayne A Sivertson, April 13, 1976: US03949758 (44 worldwide citation)

In a cardiac pacer including a source of timed pulses and means responsive to the timed pulses for providing controlled energy cardiac stimulating pulses, the improved apparatus including means for successively decreasing the energy of the cardiac stimulating pulses after every n pulses from the tim ...


9
Lee R Bolduc, Eugene A Dickhudt: Dispensing catheter. Population Research Incorporated, Lew Schwartz, Wayne A Sivertson, August 3, 1976: US03972331 (39 worldwide citation)

An intrauterine catheter attached to a fluid dispensing unit for injecting fluids, as drug materials, into the canal of the Fallopian tube. The catheter is an elongated tubular member having a pair of isolated tubes. A first of the tubes has an expandable balloon on its outer end for substantially c ...


10
Lee R Bolduc, Eugene A Dickhudt: Material dispensing apparatus. Population Research Incorporated, Lew Schwartz, Joseph F Breimayer, Wayne A Sivertson, October 10, 1978: US04119098 (34 worldwide citation)

A dispensing apparatus for placing a settable, fluid-like material in the uterine cavity and moving the material from the uterine cavity into the Fallopian tubes of a female. An elongated probe carries an expandable member, and a housing connected to the probe has a piston and cylinder structure and ...