The present invention is directed to a device that provides an implantable port, particularly for use with animal models, such as small animal models like mouse models. A microport device according to an embodiment of the present invention includes a reservoir and a catheter for delivery of substances held within the reservoir. The catheter can be barbed and can decrease in diameter from its proximal end to its distal end. The reservoir can include diaphragms for the delivery of substances to be held within the reservoir. The device can also include a sleeve that covers the device and a tip protector that covers the distal tip of the catheter.
