TY - JOUR
AU - Bech, Knud
AB -  Knud Bech, Nordkrog 20, Hellerup, Danmark. In 1955, G. Fabian described an electric hand drill for the removal of foreign bodies adhering to the cornea. A handier model has now been devised, in which the electric battery is built into the handle, so that inconvenient electric wires are avoided. The drill is shown in the accompanying illustration. It is 19 cm in length, diameter 19 mm, and weighs 125 g. It is provided with a 3-volt electric motor with a top speed of SO00 r. p. m., which is driven by a 5.3-volt mercury battery. This battery has a long life - about 2 years - and is acid-free, so that zsweatingx resulting in corrosion of adjacent parts is avoided. The casing which covers all the mechanical parts is chronium-plated. The pushbutton switch works by the same principle as is utilised for pushing forward and retracting the tip of the writing unit of a ball-point pen. The shaft is provided with a spring suspension, so that it yields to even the slightest pressure against the cornea. The cutting tool, which is an ordinary dental burr, is fixed by a spring device in the shaft, so that it may 
TI - A NEW MODEL OF AN ELECTRIC HAND DRILL FOR THE REMOVAL OF FOREIGN BODIES FROM THE CORNEA
JF - Acta Ophthalmologica
DO - 10.1111/j.1755-3768.1961.tb07743.x
DA - 1961-10-01
UR - https://www.deepdyve.com/lp/wiley/a-new-model-of-an-electric-hand-drill-for-the-removal-of-foreign-DvXbcsk01b
SP - 798
VL - 39
IS - 5
DP - DeepDyve
ER -