An apparatus includes a body and an actuator is coupled to the body. A needle is mounted to the actuator. The needle comprises a slot along a length to a tip. A sensor is coupled to a plurality of wires. A base is configured to be moveable by the actuator and includes a cutout, a circuit board having a microprocessor, and a plurality of contacts. Each contact is coupled to a wire of the plurality of wires. A power source is connected to the circuit board and to the base. A bracket is coupled to the bottom surface of the body and configured to receive the base. A patch is coupled to the bracket and has an adhesive. A needle is configured to be moveable by the actuator. The plurality of wires extend from the circuit board of the base, through the needle and out of the slot.
