Ch. 12 Instrumentation Flashcards
what blade sizes can a number three scalpel handle use?
blades 10, 11, 12, 15
what blade sizes can a number 4 scalpel handle accept?
blades 20-25
Name two double action rongeurs
Stille-Luer
Ruskin
double action rongeurs have greater mechanical advantage and require less force
what are Wescott scissors
used for delicate procedures like ophthalmic surgery, these are spring handled scissors
what is the angle of the rachet tooth for needle drivers?
39 degrees
ideally, a surgeon should use a needle holder with a clamping moment less than that of the yield moment of the needle
what are Castroviejo needle holders?
spring loaded needle holders usually used for ophthalmic procedures
what are Crile forceps
forceps with cross serrations
similar to kelly forceps but apparently kelly forcep serrations only go 1/2 the length of the jaws whereas crile go the whole way
what are oschner kocher forceps
used to grasp tissue, they have intermeshing large teeth at the tip ends and then regular cross serrations
what are the serrations on DeBakey and Cooley forceps?
longitudinal ribs on the serrations
what are Lister scissors
the usual bandage scissors we use
What are Spencer scissors
suture removal scissors
what are Noyes forceps
alligator forceps
good for retrieving objects through small openings
what are three basic characteristics of micro instruments
satin finish to prevent glare
sufficient length to be held in a pencil grip
gentle closing tension for spring loaded instruments
what is an Alm retractor
a microsurgical self retaining retractor
what are three elements that contribute to the breakdown of autoclaved instruments?
tap water, surgical wraps with residual metallic ions form detergents, moisture
