Surgical scalpel
AssigneeCilco, Inc.
InventorWalker L. Gordy
Life of this patent
Estimating the term…
Abstract
A surgical scalpel having an extendable blade, said blade being extended by rotating a movable portion of a barrel with respect to a fixed barrel portion, the initial extension being done at a fast rate and the final extension or depth adjustment being done at a slow rate. Additionally, the invention includes a gauge in combination with the scalpel for calibrating blade depth, the gauge consisting of a base, a slidable block with a tapered ridge and width markings and a slidable support for the scalpel, so that the scalpel can be abutted with the block for measurement and backed off for block adjustment.
Claims10
An adjustable depth surgical scalpel, comprising:
- (a) a barrel with first and second portions that are rotatably movable relative to each other and means for preventing the first portion from moving longitudinally relative to the second portion;
- (b) a blade holder with one end adapted to hold a blade, the blade holder mounted in the barrel so that the blade is capable of moving longitudinally relative to the first portion of the barrel between extended and retracted positions, and means for preventing the blade holder from rotating relative to the first portion;
- (c) blade holder moving means for connecting the blade holder and the second portion and moving the blade holder longitudinally relative to the first portion through rotation of the second portion;
- (d) first thread means on one of said blade holder and movement means and first engagement means on the other of said second position blade holder and movement means for causing relatively rapid longitudinal movement of the blade holder relative to the first portion as the second portion is rotated;
- (e) lock means for locking said first thread means and first engagement means when the blade holder has traveled a predetermined distance toward the extended position of the blade;
- and
- (f) second thread means on one of said blade holder and movement means and second engagement means on the other of said blade holder and movement means for causing relatively slow longitudinal movement of the blade holder relative to the first portion as the second portion is rotated and the first thread engagement means are locked together.
Dependencies are inferred from the claim text.