Search results
Results From The WOW.Com Content Network
A harmonic scalpel cuts via vibration. The scalpel surface itself cuts through tissue by vibrating in the range of 55,500 Hz. The high frequency vibration of tissue molecules generates stress and friction in tissue, which generates heat and causes protein denaturation.
A violet ray is an antique medical appliance used during the early 20th century to discharge in electrotherapy. Their construction usually featured a disruptive discharge coil with an interrupter to apply a high voltage, high frequency, low current to the human body for therapeutic purposes.
In 1899 Austrian chemist von Zaynek determined the rate of heat production in tissue as a function of frequency and current density, and first proposed using high-frequency currents for deep heating therapy. [7] In 1908 German physician Karl Franz Nagelschmidt coined the term diathermy, and performed the first extensive experiments on patients. [8]
Electrosurgery is the application of a high-frequency (radio frequency) alternating polarity, electrical current to biological tissue as a means to cut, coagulate, desiccate, or fulgurate tissue.
For the fiscal year 2017, Intuitive Surgical reported earnings of US$660 million, with an annual revenue of US$3.129 billion, an increase of 15.7% over the previous fiscal cycle. Intuitive Surgical's shares traded at over $307 per share, and its market capitalization was valued at over US$58 billion in November 2018. [11]
Isolation amplifiers are used in medical instruments to ensure isolation of a patient from power supply leakage current. [ 1 ] Amplifiers with an isolation barrier allow the front-end of the amplifier to float with respect to common mode voltage to the limit of the barrier's breakdown voltage, which is often 1,000 volts or more.
HEINE Optotechnik is a manufacturer of medical diagnostic instruments and is based in Gilching, near Munich, Germany.The company was founded in 1946 by the German physicist Helmut A. Heine and has been a family run company ever since.
The FCC created the Medical Implant Communication Service (MICS) in 1999 "in response to a petition for rule making by [Medtronic, Inc.] to permit use of a mobile radio device, implanted in a patient, for transmitting data in support of the diagnostic and/or therapeutic functions associated with an implanted medical device."