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Dual Channel Vascular Access Button for Rats
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This implantable button for rats connects two independent fluid channels simply by engaging the mating tether. It is the same size as the one-channel rat Vascular Access Button. Connect two 3Fr catheters to the 22ga inputs under the felt disk. The small ports, one red and one white, can be accessed manually using a syringe fitted with a PNP3M injector.
The mating tether snaps into the button with magnets to minimize the force on the animal. The magnets are oriented so that the tether can only be connected one way: the red port connects to the tubing with the white stripe. The tether uses PS95 spring, which can be connected to a 22ga dual channel swivel. Alternatively, you can connect one line to a single channel swivel for continuous access and then allow the second line to rotate freely with a PinPort for intermittent dosing or sampling. The tubing inside tether is VAHBPU-T25 - polyurethane with .017in ID which is ideal for applications such as blood sampling where low dead volume is important, but can still stretch to connect with 22ga.
keyword : fluid handling, tether, instech
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