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Old 01-16-2013, 12:15 PM
Join Date: Nov 2008
Location: Israel
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How do tranquilizer darts work?

How do tranquilizer darts work? Specifically, how does the tranquilizing fluid get injected into the animal?
Old 01-16-2013, 01:44 PM
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Location: KC MO or there abouts
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The impact causes a trigger to move which allows a compression mechanism to inject the liquid through the hollow needle.

Here is a link to a diagram of a dart which uses the release of compressed air to push the plunger.
Old 01-16-2013, 01:44 PM
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Location: Challenger Deep
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From the Wikipedia article on tranquilizer guns:

Originally Posted by Wikipedia
On impact with the animal, the momentum of a steel ball at the rear of the dart pushes the syringe plunger and injects the dose of barbiturate or other drug into the animal.
Old 01-16-2013, 04:00 PM
Join Date: Feb 2007
Location: East coast of Florida
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The darts we use actually have a small powder charge. Rather than rely on a fairly heavy slug in motion to impart its energy (momentum) to the plunger and thus send the drug out through the needle, a smaller ball hits a (rough equivalent of a) percussion cap. The small explosion drives the plunger. We find these to be lighter, permitting longer aimed shots, and more reliable.

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