A reusable sensor is disclosed for producing a signal indicative of at least one physiological parameter of tissue. The sensor can include a sensor housing that has a distal opening, a wire lumen, and a proximal opening. The distal opening can include a lumen extending through the body of the sensor housing and the wire lumen can be located on the outside of the sensor housing. The sensor can also include a first component located on a top surface of the sensor housing and along the pathway of the wire lumen. The sensor can also include a second component located on the bottom surface of the sensor housing opposite of the first component. The second component can also be located along the pathway of the wire lumen. The sensor can also include a wire coaxially disposed within the wire lumen and connecting the first component and second component.