A NEW MYRINGOTOME 
BY 
T. H. SHASTID, M.D. NEW INSTRUMENTS 
A NEW MYRINGOTOME. 
T. H. Shastid, M. U., Fairfield, 111. 
THE accompanying illustration is that of an instru- 
ment which 1 have found so useful that I wish to 
offer it to the profession. It is a myringotome, the oper- 
ative extremity of which consists of three triangular 
blades set upon a shaft at equal intervals, and terminating 
in a common point. Each blade cuts on the principle of 
a Beer’s cataract knife. This instrument makes a triple 
incision—represented at the left of the figure—at a single 
puncture. It is of service, of course, chief!}7 in cases of 
inspissated or tenacious mucus or pus in the tympanum. 
In these cases a simple, slit-like incision is often wholly 
inadequate for the removal of the masses, and the triple 
incision produced by the instrument I offer is, as corn- 
spared with either a flap or an extensive incision formed 
by a knife, produced with less difficulty to the operator 
and less pain to the patient, since it is made at one single 
puncture. 
The instrument is made by Win. H. Armstrong & 
Co., of Indianapolis, Ind., to whom my thanks are due 
for skill shown in its construction. 
Reprinted from the Archives of Otoeogy, Yol.