A system of electrotherapeutics as taught by the International correspondence schools, Scranton, . drawn up. This arrangement does notseem to be very satisfactory, as it is difficult to produce aneven pull and to prevent a certain jerkiness. In many opera-tions where the cautery snare is used, it is required to submitthe latter to a constant pull, and, in some cases, of considerablestrength. The handle, Fig. 11, is constructed with the aim offulfilling these requirements. Here the fingers are inserted inthe three rings, and by bending the fingers towards the thumb,the snare is drawn in wi
A system of electrotherapeutics as taught by the International correspondence schools, Scranton, . drawn up. This arrangement does notseem to be very satisfactory, as it is difficult to produce aneven pull and to prevent a certain jerkiness. In many opera-tions where the cautery snare is used, it is required to submitthe latter to a constant pull, and, in some cases, of considerablestrength. The handle, Fig. 11, is constructed with the aim offulfilling these requirements. Here the fingers are inserted inthe three rings, and by bending the fingers towards the thumb,the snare is drawn in with an even motion and with a speedthat can be easily regulated. When using the snare it shouldbe remembered that, while it is being drawn into the handle,its resistance is constantly decreasing. The resistance of thecircuit should, therefore, be correspondingly increased, other-wise there is danger of the platinum wire being overheated and 24 PHYSICS OF LIGHT AND CAUTERY §1 melted. The snare handle here illustrated has a resistance thatis automatically increased while the snare is being
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