Abstract: A system and method of determining the rate of flow of Cerebral Spinal Fluid (CSF) in an External Ventricular Drainage Mechanism (EVDM). Drops, or the flow of CSF moving within or into the EVDM, are detected. The user is provided, in a human-readable form, information derived from the detection. This may be accomplished with a printer and/or a digital display device. The information may include CSF flow rate and/or CSF volume collected in the EVDM, for example. The system and method may further determine if the drops or flow have ceased for at least a certain amount of time. In that case, an alarm may be activated.

Abstract: A cut alignment device for a rotary saw having a motor which spins a cutting unit which includes a rotary shaft driven by the motor, a circular blade having a central aperture through which the shaft fits, and a structural housing. The cut alignment device includes the structural housing defining two or more internal compartments, a battery power source carried within the structural housing, and a beam light source, operatively connected to this power source, and also located within the structural housing. The light source projects a light beam from the cutting unit directed slightly away from the plane of the rotary cutting tool or saw blade such that it never intersects the plane of the blade, to assist the operator in cutting accurately.

Abstract: A cut alignment device for a rotary saw having a motor which spins a cutting unit which includes a rotary shaft driven by the motor, a circular blade having a central aperture through which the shaft fits, and a blade mounting device for holding the blade on the shaft. The cut alignment device includes a battery power source carried by the cutting unit; and a beam light source, operatively connected to this power source, and carried by the cutting unit. The light source projects a light beam at a shallow angle from the cutting unit directed to intersect the plane of the rotary cutting tool or saw blade, to assist the operator in cutting accurately.

Abstract: A cut alignment device for a rotary saw having a motor which spins a cutting unit which includes a rotary shaft driven by the motor, a circular blade having a central aperture through which the shaft fits, and a structural housing. The cut alignment device includes the structural housing defining two or more internal compartments, a battery power source carried within the structural housing; and a beam light source, operatively connected to this power source, and also within the structural housing. The light source projects a light beam from the cutting unit directed to intersect the plane of the rotary cutting tool or saw blade, to assist the operator in cutting accurately.

Abstract: A cut alignment device for a rotary saw having a motor which spins a cutting unit which includes a rotary shaft driven by the motor, a circular blade having a central aperture through which the shaft fits, and a blade mounting device for holding the blade on the shaft, the cut alignment device including: a battery power source carried by the cutting unit; and a beam light source, operatively connected to this power source, and carried by the cutting unit; wherein the light source projects a light beam at a shallow angle from the cutting unit directed to intersect the plane of the rotary cutting tool or saw blade, to assist the operator in cutting accurately.

Abstract: A cut alignment device for a rotary saw having a motor which spins a cutting unit which includes a rotary shaft driven by the motor, a circular blade having a central aperture through which the shaft fits, and a blade mounting device for holding the blade on the shaft, the cut alignment device including: a battery power source carried by the cutting unit; and a beam light source, operatively connected to this power source, and carried by the cutting unit; wherein the light source projects a light beam from the cutting unit directed along the cutting edge of the blade to assist the operator in cutting accurately.