Senorx, Inc.

Other

Warsaw Orthopedic, Inc.

William Marsh Rice University

University of Houston System

Micro Motors, Inc.

Stat-chem Inc.

James Huntington Dabney

Derek J Daw

Richard L Quick

Paul Lubock

Dan Kussman

David E Seitz

Conrad Sawicz

Louis Everett

Frank R Louw

Martin Victor Shabaz

Thomas L Harman

Fathi Hassan Ghorbel

Daniel Kussman

Samuel M Shaolian

Thanh Van Nguyen

George P Teitelbaum

Michael A Carr

To Van Pham

Ronald G Coss

Lisa A Tam

Michael H Burnam

Martin J Patko

J Ryan Steger

Cliff Avery Thomas

Demetri Polychronis Spanos

Nathan Christopher Lowry

Betty Wingyi Seto

Bill Hayhurst

Thomas L Harmon

Frederick H Ward

A control console is disclosed for controlling one or more medical devices. The control console communicates to at least one medical device, and at least one peripheral module associated with the medical device if needed. The control console has a microprocessor for processing data to direct an operation of the medical device.

Universal medical device control console

A method of detecting a leakage current in an electrosurgical system operating at a high frequency includes: coupling an RF generator to a pair of RF output leads via an electrical interface, the RF generator having an operating frequency; inducing a test signal at an output of the electrical interface, the test signal having a test signal frequency that is less than the operating frequency; and monitoring for a presence of an induced common mode current that would indicate the presence of leakage current.

Electrosurgical medical system and method

A system for controlling an electrosurgical electrode of a medical device includes a hand-held electrosurgical electrode having cutting probe. A return electrode is positioned remote from the electrosurgical electrode. An RF generator is coupled to the electrosurgical electrode and to the return electrode, and includes an RF amplifier. The RF generator generates an RF signal at a first RF power level for tissue cutting and generates the RF signal at a second RF power level greater than the first RF power level to initiate tissue cutting. A sensor monitors an electrical characteristic associated with the electrosurgical electrode. A controller coupled to the RF amplifier maintains a desired RF power output and a desired RF duty cycle at the first RF power level by adjusting a DC input voltage applied to an output stage of the RF amplifier based on the monitored electrical characteristic associated with the electrosurgical electrode.

A method for controlling an electrosurgical electrode of a medical device includes providing an electrosurgical tissue cutting electrode having an arcuate electrode portion; delivering energy from an RF generator to the electrosurgical electrode, said RF generator including an RF amplifier; monitoring an electrical characteristic associated with said electrosurgical electrode; and establishing a desired RF power output and a desired RF duty cycle at said RF generator by adjusting DC input voltage applied to an output stage of said RF amplifier based on said monitoring to effect tissue cutting by the arcuate electrode portion.

A water heater () is suitable for point-of-use applications. The water heater includes a first temperature sensor, a second temperature sensor, and a controller connected to the first and second temperature sensors. The controller is configured to receive the signals generated by the first temperature sensor and the second temperature sensor and to detect a flow condition of water within the heat without using mechanical flow detection means and without supplying stand-by heating by adding an absolute value of the sensed change in temperature of water at the first temperature sensor to the absolute value of the sensed change in temperature of water at the second temperature sensor to yield a sum and then comparing the sum to a reference temperature.

Tankless water heater

A method for mitigating leakage in an RF electrosurgical generator includes delivering an RF signal from an RF electrosurgical generator to an electrosurgical electrode by way of a patient box; providing a balanced and symmetrical shielded transmission line coupling said electrosurgical generator disposed in a first housing to said patient box disposed in a second, different housing; providing a common mode choke in said patient box, said common mode choke including an output winding and a return winding, said output winding and said return winding spaced apart and in parallel to maintain a desired impedance, said output winding comprising a wire carrying said RF signal as an output signal and said return winding carrying a return signal from a return electrode; and directing a common mode signal from said RF signal to said common mode choke thereby blocking said common mode signal.

A high frequency electrosurgical power generator configured to produce electrical power at a frequency of about 1 to about 14 MHz and preferably having an essentially sinusoidal waveform with a voltage level up to 1,000 Vrms, and a current level up to 5 Amps. The output of the high frequency electrosurgical power generator is connected to an electrosurgical tool configured to receive the voltage and current produced by the electrosurgical power generator and deliver the voltage and current to an electrosurgical site. The output of the electrosurgical generator preferably is an essentially sinusoid waveform with a frequency between about 3 MHz and about 8 MHz, up to about 700 volts rms, up to about 2 amps, with a total power of up to 1,000 watts.

High frequency power source

A water heater with a housing having an internal chamber, an inlet port, and an outlet port; a heating element coupled to the housing; a water inlet line; a water outlet line; an inlet temperature sensor within the water inlet line; an outlet temperature sensor within the water outlet line; and a controller electrically connected to the inlet temperature sensor, the outlet temperature sensor, and the electrically power heating element. The controller is operable to detect a flow condition without using mechanical flow detection means and without supplying stand-by heating by adding an absolute value of the sensed change in temperature of water flowing upstream from the inlet port to the absolute value of the sensed change in temperature of the water flowing downstream from the outlet port to yield a sum and comparing the sum to a reference temperature.

A medical device system and method provide an RF electrosurgical generator coupled to an electrosurgical electrode via a patient box disposed in close proximity to the patient. An RF signal is delivered from the generator to the patient box where signal power is increased and the RF signal delivered to the electrosurgical electrode. The patient box is coupled to the electrosurgical electrode by a short cable capable of carrying an HV, high frequency 5 MHz signal without leakage. An electrical characteristic associated with the electrosurgical electrode is monitored and a desired RF power output and duty cycle maintained by adjusting DC input voltage applied to an RF amplifier, responsive to the monitoring. The system determines when the electrosurgical cutting electrode has started cutting and switches from a start mode to a run mode having a different RF duty cycle and a reduced RF power output controlled by a servo system.

A water heater () is suitable for point-of-use applications. The water heater includes a tank housing () and one or more electrically powered heating elements (). A water inlet line () and a water outlet line () may be molded as a unitary structure with the tank housing. The water outlet line includes a lower port () and an upper port () for mixing water in the outlet line. The housing may be mounted such that its axis is either vertical or horizontal.

Growing community of inventors

Irvine, CA, United States of America

James Huntington Dabney