ratchet

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ratchet

a steplocking device on surgical instruments. As the handles are closed the jaws are also closed and the ratchet holds them in a locked position. The ratchet consists of a notched bar on each handle, the notches facing and overriding when the handles are closed.
References in periodicals archive ?
ECA Medical Instruments, a designer and manufacturer of single-procedure torque-limiting and fixed-driver surgical instruments and sterile-packed procedural kits, has developed what the company calls the "industry's first single-procedure surgical ratchet for use by surgeons to secure orthopedic and spine implants.
When it comes to aerospace work these ratchets do double duty, offering technicians unprecedented access and strength," said Jason Wirth, product manager for Armstrong.
drive ratchets feature Snap-on Industrial's Dual80 Technology, which include dual pawls and an 80-tooth gear for more power in less lateral space (1/4-in.
Using Victrex's PEEK polymer for the readjusting spring and ratchet of its new line of RectuChem pipe and hose couplings, Rectus Apparatebau GmbH of Germany significantly expanded the couplings' application range, reports Victrex.
The device is a novel type of Brownian ratchet, a tiny machine that harnesses the energy of random jiggles to produce a one-way particle flow.
According to the CPSC, the nylon ratchets which control the headrest height can break after repeated use, causing the headrest to collapse.
Some analysts at the Federal Reserve have found that money demand equations perform better if an interest rate ratchet variable is included in the equation.
All 3/8-in, ratchets must withstand a minimum torque of 1,800 in.
Since the launch of the original patented 5-degree ratcheting wrench, the GearWrench brand has continuously led the industry with breakthroughs in pass-thru ratchets, sockets, screw/nut drivers, pliers and specialty tools.
And, since fine-tooth ratchets have less internal resistance, they're less likely to unscrew a loose nut or bolt on the return stroke.
Second thing, the hand may be too long or you could be cursed with high ratchets.
In your case, the ratchets are integral with the extractor/ejector star.