Richard David Luntz
Land Surveyors in Salt Lake City, UT

4416274, Nov 22, 1983

Feb 23, 1981

6/236753

Stephen C. Jacobsen - Salt Lake City UT
Richard D. Luntz - Murray UT

Motion Control, Inc. - Salt Lake City UT

A61M 1508

604 20

A bioelectrode for use in the iontophoretic delivery of ions into the skin or tissue of a person includes either a receptacle or a composition of material suitable for holding ions to be delivered, a metallic foil disposed on one side of the receptacle or composition of matter, and a coupling device for electrically coupling the foil to an electrical source. The other side of the receptacle or composition of material is for placement against a person's skin or tissue so that ions may be delivered thereinto. The receptacle or composition of material both include features or characteristics which inhibit the migration of ions laterally therein, i. e. , in a direction generally parallel to the surface of the skin or tissue, but which allow migration in a direction generally perpendicular to the surface of the skin or tissue, and in particular from the metal foil toward the person's skin or tissue. The advantage of this capability is to provide a substantially uniform movement of ions into the skin or tissue over surface area of contact of the bioelectrode with the skin.

4477971, Oct 23, 1984

Sep 27, 1983

6/536304

Stephen C. Jacobsen - Salt Lake City UT
Richard D. Luntz - Murray UT
Barry K. Hanover - Salt Lake City UT

Motion Control, Inc. - Salt Lake City UT

H01R 4302

29877

An iontophoretic bioelectrode includes an enclosure having a bottom wall formed of a membrane through which ions may migrate when subjected to an electric field, and an upper wall joined to the bottom wall to define an interior compartment for holding an ion-containing solution. An electrode in the form of the male portion of a conventional clothing snap is mounted to the enclosure to communicate electrically with solution contained in the interior compartment. A needle receiving element is mounted in the upper wall of the enclosure. This element is in the form of a section of conduit having a receiving end, which is directed upwardly, and a blocking end which includes a platform for preventing a needle inserted into the receiving end from passing all the way through the conduit. A resilient plug is disposed in the receiving end of the conduit to prevent solution from escaping from the interior compartment. The plug is formed of a material through which a needle may be inserted but which, when the needle is retracted, closes about the opening made by the needle to prevent the escape of solution.

4419092, Dec 6, 1983

Nov 6, 1981

6/319074

Stephen C. Jacobsen - Salt Lake City UT
Richard D. Luntz - Murray UT
Barry K. Hanover - Salt Lake City UT

Motion Control, Inc. - Salt Lake City UT

A61N 130

604 20

An iontophoretic bioelectrode includes an enclosure having a bottom wall formed of a membrane through which ions may migrate when subjected to an electric field, and an upper wall joined to the bottom wall to define an interior compartment for holding an ion-containing solution. An electrode in the form of the male portion of a conventional clothing snap is mounted to the enclosure to communicate electrically with solution contained in the interior compartment. A needle receiving element is mounted in the upper wall of the enclosure. This element is in the form of a section of conduit having a receiving end, which is directed upwardly, and a blocking end which includes a platform for preventing a needle inserted into the receiving end from passing all the way through the conduit. A resilient plug is disposed in the receiving end of the conduit to prevent solution from escaping from the interior compartment. The plug is formed of a material through which a needle may be inserted but which, when the needle is retracted, closes about the opening made by the needle to prevent the escape of solution.

4141359, Feb 27, 1979

Aug 16, 1976

5/714942

Stephen C. Jacobsen - Salt Lake City UT
Robert L. Stephen - Salt Lake City UT
R. Todd Johnson - Salt Lake City UT
Richard Luntz - Salt Lake City UT
David Knutti - Salt Lake City UT

University of Utah - Salt Lake City UT

A61N 130

1281721

An improved iontophoresis device for topical administration of ionic drugs or chemicals through epidermal tissue for anesthetizing or sterilizing local tissue or for applying various medicaments without mechanical penetration. An ionic form of drug is conducted through the epidermal tissue by means of direct current generated from a battery powered current source. Pulse-width modulated DC current is regulated by feedback circuitry which varies the pulse duration and adjusts and stabilizes the average current at a desired level. A high voltage capability together with feedback control enables maintenance of a constant current through the highly resistive epidermal tissue. To prevent excessive voltage buildup and the accompanying dangers of shock and burns, a comparator circuit monitors current flow and voltage across the electrodes and automatically triggers an SCR shutdown circuit when impedance readings are outside predetermined limits. The ionic drug is suspended in a conductive gel mixture which acts as the conducting medium in direct communication with the patient's skin. This gel is carried in a receptacle mounted on an electrode pad which uses a conducting foil surface to make electrical contact with the gel.

4166457, Sep 4, 1979

Nov 14, 1977

5/851082

Stephen C. Jacobsen - Salt Lake City UT
Robert L. Stephen - Salt Lake City UT
Richard D. Luntz - Salt Lake City UT
Richard T. Johnson - Salt Lake City UT
David F. Knutti - Salt Lake City UT
Carl F. Mandleco - Salt Lake City UT

University of Utah Research Institute - Salt Lake City UT

A61B 504

128639

A dry-state bioelectrode having a self-sealing receptacle for receiving electrolyte and/or medicament fluid contents. The receptacle is attached at its opening to a sheet-like flexible base member having an opening in common with the receptacle opening, the bottom of the base member being adapted for fixation at a skin surface. A portion of the skin surface is exposed to the fluid contents of the receptacle through the common opening. An injection site communicates through the wall of the receptacle and provides controlled access for filling. Upon completion of filling, the receptacle self seals, retaining the fluid contents therein for application of iontophoresis treatment or other procedures requiring use of a potential gradient. An electrode plate is supported at an interior surface of the receptacle for supplying the desired electric potential.

4250878, Feb 17, 1981

Nov 22, 1978

5/963029

Stephen C. Jacobsen - Salt Lake City UT
Jerome C. Stenehjem - Salt Lake City UT
Robert L. Stephen - Salt Lake City UT
Richard D. Luntz - Murray UT

Motion Control, Inc. - Salt Lake City UT

A61N 130

12820721

A bioelectrode for non-invasive and inotophoretic delivery of chemical species (such as ions, polar molecules, etc. ) into the skin of a person. The bioelectrode includes a pouch having flexible walls, at least a portion of which is composed of a microporous, permeable or semipermeable membrane. The pouch holds fluid which contains the chemical species to be delivered through the skin. An electrode is attached to the pouch so that when the pouch is placed against the skin, with the membrane portion in contact with the skin, and an electric potential is applied to the electrode, chemical species in the pouch are caused to migrate through the membrane and into the skin.

4483330, Nov 20, 1984

Jul 22, 1982

6/400914

Stephen C. Jacobsen - Salt Lake City UT
David F. Knutti - Salt Lake City UT
Richard D. Luntz - Murray UT

Motion Control, Inc. - Salt Lake City UT

A61H 102

128 75

A compact traction device includes a housing and a plurality of constant tension spring units disposed within the housing. Each constant tension spring unit includes a cable which extends from the unit through an opening in the housing. As the cable is pulled out from the housing, a substantially constant tension is developed on the cable. Hook elements are coupled to the end of each cable to enable attaching the cable to a ring or other connecting structure which, in turn, would be attached to some part of the body of a person utilizing the traction device. A brake device is included in the housing for each constant tension spring unit to inhibit the rapid retraction into the housing of the cables when the cables are released. A clamp is mounted on the exterior of the housing to enable attaching the traction device to a support frame. The clamp allows positioning of the device to have almost any orientation.