ch wedge
tightly.]

_Rotation Forceps_.--It is sometimes desired to make traction on an
irregularly shaped foreign body, and yet to allow the object to turn
into the line of least resistance while traction is being made. This
can be accomplished by the use of the rotation forceps (Fig. 20),
which have for blades two pointed hooks that meet at their points and
do not overlap. Rotation forceps made on the model of the laryngeal
grasping forceps, but having opposing points at the end of the blades,
are sometimes very useful for the removal of irregular foreign bodies
in the larynx, or when used through the esophageal speculum they are
of great service in the extraction of such objects as bones,
pin-buttons, and tooth-plates, from the upper esophagus. These forceps
are termed laryngeal rotation forceps (Fig. 31). All the various forms
of forceps are made in a very delicate size often called the
"mosquito" or "extra light" forceps, 40 cm. in length, for use in the
4 mm. and the 5 mm. bronchoscopes. For the 5 mm. bronchoscopes heavier
forceps of the 40 cm. length are made. For the larger tubes the
forceps are made in 45 cm., 50 cm., and 60 cm. lengths. A
square-cannula forceps to prevent turning of the jaws was at one time
used by the author but it has since been found that round cannula
pattern serves all purposes.

[FIG. 20.--The author's rotation forceps. Useful to allow turning of an
irregular foreign body to a safer relation for withdrawal and for the
esophagoscopic removal of safety pins by the method of pushing them
into the stomach, turning and withdrawal, spring up.]

_Upper-lobe-bronchus Forceps_.--Foreign bodies rarely lodge in an
upper-lobe bronchus, yet with such a problem it is necessary to have
forceps that will reach around a corner. The upper-lobe-bronchus
forceps shown in Fig. 27 have curved jaws so made as to straighten out
while passing through the bronchoscope and to spring back into their
original shape on up from the lower jaw emerging from the distal end
of the bronchoscopic tube, the radius of curvature being regulated by
the extent of emergence permitted. They are made in extra-light
pattern, 40 cm. long, and the regular model 45 cm. long. The
full-curved model, giving 180 degrees and reaching up into the
ascending branches, is made in both light and heavy patterns. Forceps
with less curve, and without the spiral, are used when it is desired
to reach only a short distance "around the corner" anyw