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The Instech VAHR1H/22 is a single-channel Vascular Access Harness™ (VAH™) for rats. It features an integrated 22ga PinPort™ in a protective dome, allowing needle-free access via a PNP3M injector. The system protects surgical sites and improves patency by creating a closed environment. It connects to a 3Fr (1.0 mm) internal catheter and a mating tether for continuous infusion or sampling. Unopened ports last one year; accessed ports follow aseptic protocols.