Bronchoscopic And Esophagoscopic Grasping Forceps


Categories: INSTRUMENTARIUM
Sources: A Manual Of Peroral Endoscopy And Laryngeal Surgery

are of the tubular

type, that is, a stylet carrying the jaws works in a slender tube so

that traction on the stylet draws the V of the open jaws into the

lumen of the tube, thus causing the blades to approximate. They are

very delicate and light, yet have great grasping power and will

sustain any degree of traction that it is safe to exert. They permit

of the delicacy of touch of a violin bow. The two types of jaws most

frequently used, are those with the forward-grasping blades shown in

Fig. 18, and those having side-grasping blades shown in Fig. 19. The

side-curved forceps are perhaps the most generally useful of all the

endoscopic forceps; the side projection of the jaws makes them readily

visible during their closure on an object; their broader grasp is also

an advantage., The projection of the blades in the side-curved

grasping forceps should always be directed toward the left. If it is

desired that they open in another direction this should be

accomplished by turning the handle and not by adjusting the blade

itself. If this rule be followed it will always be possible to tell by

the position of the handle exactly where the blades are situated;

whereas, if the jaws themselves are turned, confusion is sure to

result. The forward-grasping forceps are always so adjusted that the

jaws open in an up-and-down direction. On rare occasions it may be

deemed desirable to turn the stylet of either forceps in some other

direction relative to the handle.



[FIG. 18.--The author's forward grasping tube forceps. The handle

mechanism is so simple and delicate that the most exquisite delicacy

of touch is possible. Two locknuts and a thumbscrew take up all lost

motion yet afford perfect adjustability and easy separation for

cleansing. At A is shown a small clip for keeping the jaws together to

prevent injurious bending in the sterilizer, or carrying case. At the

left is shown a handle-clamp for locking the forceps on a foreign body

in the solution of certain rarely encountered mechanical problems. The

jaws are serrated and cupped.]



[FIG. 19.--Jaws of the author's side-curved endoscopic forceps. These

work as shown in the preceding illustration, each forceps having its

own handle and tube. Originally the end of the cannula and stylet were

squared to prevent rotation of the jaws in the cannula. This was

found to be unnecessary with properly shaped jaws, which wedge

tightly.]





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