File:Maryland medical journal (1902) (14596227138).jpg

Identifier: marylandmedicalj4519medi (find matches)
Title: Maryland medical journal
Year: 1902 (1900s)
Authors: Medical and Chirurgical Faculty of the State of Maryland
Subjects: Medicine
Publisher: Baltimore : Manning and Ashby
Contributing Library: Yale University, Cushing/Whitney Medical Library
Digitizing Sponsor: The College of Physicians of Philadelphia and the National Endowment for the Humanities

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re and more during two years work withFreudenbergs instrument the drawbacks referred to, and especiallyfeeling the need of blades of different size, th writer finally con- A NEW BOTTINI INCISOR—Young. 153 suited the Kny-Scheerer Company of New York during April,1901, with reference to the construction of an instrument whichwould, if possible, fill all the requirements. After considerable ex-perimentation we have produced, we believe, a satisfactory instru-ment, the construction of which is thoroughly explained by theaccompanying cuts. As seen in the illustrations, the form of Freudenbergs instru-ment is adhered to (Fig. i), the only changes being in its havingfour interchangeable blades, a beak of different angle, a connect-ing handle with more extensive contact surfaces, and a few minorchanges in construction. By a very simole device, the simple eleva-tion of a sliding-bar on the rotary wheel, one blade may be removedand another inserted. The sliding-bar, working on a spring, holds
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Fig. 4. the rod containing a blade firmly attached to the screw mechanismby engaging the circular groove near its outer end. We have hadfour blades constructed as shown in Fig. 2, the smallest having anelevation of .8 cm., the second 1.2 cm., the third 1.7 cm., and thefourth 2.1 cm. Blade No. 3 corresponds to the one usually found in Freuden-bergs instrument, and is the one most generally used, while No. 2is useful in small hypertrophies, and No. 4 for the very large.Blade No. i (the smallest) was constructed mainly to complete theset, and without any idea of much practical value. I have been sur-prised, however, to find it very useful in several cases, which will begiven in detail further on. The change in the shape of the beak has been of very great com-fort. The new beak (Fig. 3) cannot possibly slip by the prostaticorifice into the urethra with all the outward traction which may beput upon the instrument during the operation, whereas with theFreudenberg instrument (Fig. 4) one mus

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