The surgical assistant, a manual for students, practitioners, hospital internes and nurses . collodion. The external auditory canalis then irrigated with a boracic acid or other antiseptic solu-tion, and then the cheek, auricle, mastoid region and neckare to be scrubbed and disinfected. After this the towelsare spread, and a bit of absorbent cotton or a narrow stripof gauze may be lightly packed into the auditory meatus. The instruments should be arranged much as for trephin-ing, the coarser bone tools used in that operation being re-placed here by the smaller mastoid burrs, gouges, chisels an
The surgical assistant, a manual for students, practitioners, hospital internes and nurses . collodion. The external auditory canalis then irrigated with a boracic acid or other antiseptic solu-tion, and then the cheek, auricle, mastoid region and neckare to be scrubbed and disinfected. After this the towelsare spread, and a bit of absorbent cotton or a narrow stripof gauze may be lightly packed into the auditory meatus. The instruments should be arranged much as for trephin-ing, the coarser bone tools used in that operation being re-placed here by the smaller mastoid burrs, gouges, chisels andcurettes (appendix, figs. 66-68). These are spread outsystematically, according to their sizes and shapes. An auralhand-syringe and a basin of irrigating solution, a pus basin(sterilized or covered with a sterile towel), one or two small Mastoid Operations. 167 saucers and a supply of bone wax should be at hand. Butfew ligatures need be prepared. A few sutures of silk, cat-gut or horsehair should be mounted on stout, full curved( mastoid ) needles. If the operation be extended into the. Fig. 57. Position of the head for operation upon the lower jaw or a mastoid operation the rubber cap should not be drawn quite so far down. neck, e. g., to explore the jugular vein, one or two suturesare to be threaded on ordinary surgical needles; and if acomplete Stacke operation is found necessary, the assistantprepares silk sutures on small round needles for fasteningthe incised concha in its new position. A generous supply of bits of sea-sponge should be should be placed in a dish, together with a pair ofthumb forceps, or, better yet, several of them are securelymounted on artery forceps and their loose edges trimmed withscissors. The sizes of these sponges should be altered to suitthe varying depth and width of the cavity in which the opera- 168 The Surgical Assistant. tor is working. Larger pieces may be rinsed, squeesed dry,and used repeatedly, but very small bits of
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