Chapter 6 Biomedical Science
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Created by:
hmeustice on December 1, 2011
Subjects:
surgical technology, chapter 6, biomedical science
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35 terms
Terms | Definitions |
|---|---|
 Megabyte | 1,000 kilobytes |
| Gigabyte | 1000 megabytes |
| Applications of computers in surgery | scheduling surgical patients, surgeon's preference card, patient charts, surgical records, sterile processing, robotics |
| W.T. Bovie | 1920's physicist who developed the first spark gap tube generator which culminated in the ESU generator now commonly used in surgery |
| electron theory | principles that govern the behavior of tiny particles known as electrons |
| matter | anything that has mass and occupies space |
| nucleus | center of an atom that contains protons and neutrons |
| protons | positively charged electric particles |
| neutrons | neutral particles |
| electrons | negatively charged particles that revolve around the nucleus in shells or orbits |
| free electrons | outer electrons whose movement creates electric current |
| electricity | describes the free electrons moving or flowing from the ring of one atom to another |
| conductors | materials that allow the flow of free electrons |
| copper | most commonly used conductor |
| insulators | materials that inhibit the flow of electrons |
| OR humidity | should be between 50 and 55% but not less than 45% |
| electrical charges | can be negative or positive and are defined as too many or too few electrons on an atom respectively |
| electric current | movement of the electrical charge |
| magnetism | can generate an electric current |
| electricity | used to generate magnetism |
| volt | defines electrical potential |
| voltage | the potential energy of electrons at any given time between two points |
| circuit | the path that electricity travels from the energy source to a device and back to the energy source |
| components of a circuit | source of power, conductor, load, and switch |
| current is measured | in amperes or amps |
| current | the flow of electric charge or the rate of flow of electrons |
| Ohm's law | scientific law that pertains to electricity; mathematically explains the relationship between voltage, current (amps), and resistance |
| power | the rate at which work is done |
| hot wire | the wire that supplies electrical current in a circuit to a device |
| neutral wire | or ground wire; carries electrical current in a circuit away from a device |
| electrosurgery | the application of electrical current through tissue to coagulate or cut tissue |
| ESU circuit | generator, active electrode, patient, inactive electrode |
| active electrode | delivers the electric current to the surgical site through the tissue |
| monopolar mode | the most commonly used mode on the ESU |
| bipolar mode | used only for coagulation not cutting |
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