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Diathermy is electrically induced heat or the use of high-frequency electromagnetic currents as a form of physical therapy and in surgical procedures. The earliest observations on the reactions of the human organism to high-frequency electromagnetic currents were made by Jacques Arsene d'Arsonval .
These were limited to frequencies of 0.1 – 2 MHz, called "longwave" diathermy. The current was applied directly to the body with contact electrodes, which could cause skin burns. In the 1920s the development of vacuum tube machines allowed frequencies to be increased to 10 – 300 MHz, called "shortwave" diathermy. The energy was applied to ...
Examples of applications for the use of radio frequency (RF) energy in these bands include RF heating, microwave ovens, and medical diathermy machines. The powerful emissions of these devices can create electromagnetic interference and disrupt radio communication using the same frequency , so these devices are limited to certain bands of ...
One example of such a machine is called a hyfrecator. This term began in 1940 as a Birtcher Corporation brand name Hyfrecator for " Hi gh Fre quency Eradi cator ", but now serves generically to describe a general class of single-electrode, non-isolated (earth-referenced) low-powered electrosurgical machines intended mainly for office use.
Another method is known as thermolysis, also called radio frequency (RF), shortwave or diathermy. Thermolysis was developed in the 1920s and first reported in medical literature by Henri Bordier. [2] A thermolytic hair remover is essentially a radio transmitter, usually with an output of about 0–8 watts at a frequency of 13.56 MHz. RF energy ...
Cauterization (or cauterisation, or cautery) is a medical practice or technique of burning a part of a body to remove or close off a part of it. It destroys some tissue in an attempt to mitigate bleeding and damage, remove an undesired growth, or minimize other potential medical harm, such as infections when antibiotics are unavailable.
A Birtcher Corporation "Hyfrecator" manufactured in March 1982. Attached is a power cord (right) and foot on/off switch (left). Held in the hand to show scale is a "hand-piece" detachable sharp-pointed unipolar application electrode.
The first surgical procedures to reduce intraocular pressure of the eye, by decreasing production of aqueous humor, by damaging the ciliary body by diathermy, penetrating cyclodiathermy or surgical excision was done in the early twentieth century. [1] Cyclodestruction by diathermy was first performed by Weve in 1933. [11]