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 ?
The ECA Secure-Fast ratchet comes configured with either an industry-standard AO or quarter-of-an-inch square hub connector that can mate with legacy stainless steel drivers and shafts used across all types of surgeries.
The Secure-Fast ratchet complements our family of disposable instruments and procedural kits and underscores the broader adoption of disposable instruments and kits across hospitals and ambulatory surgical centers.
Understandably, no-one wanted to pay an up front price for something they may never get if the ratchet targets were missed so the arrangement fell into disuse.
The new ratchet will ease the sorting of hard-to-separate cell-membrane proteins, such as receptors, the scientists predict.
Boxer explains that drug designers might use the ratchet to determine whether molecules of a candidate drug have docked with target receptors on a membrane.
The rationale for including a ratchet variable in a demand for money equation is straightforward.
By allowing expected sales to scale the ratchet variable, this specification implies, reasonably, that the effect of the interest rate ratchet increases as expected sales increase.
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.
Ratchets Available in three sizes - 1/4-inch, 3/8-inch, and 1/2-inch drive - the new DEWALT heavy duty ratchets offer three times the life of standard ratchets, on average.
Also available are ratchets with telescoping handles.
19, 2015 /PRNewswire/ -- Higher performance with less effort -- no wonder ratchet handles are trending in contemporary kitchenware design.
40 3/8" Ratchet with Dual 80(R) Technology (F80) -- 7 teeth in contact with an 80-tooth gear provides strength and durability.