A vibrator for use in enhancement of pre-hospital coronary thrombolysis comprising a vibration source operable to generate vibration at a frequency in the range of 1-1000 Hz with at least a pair of oscillatory contacts spaced to enable simultaneous seating to the anatomic left and right of the sternum (such as to match the geometry of the right and left coronary arteries) of a patient in need of coronary thrombolysis. The preferred vibrator is operable to emit vibration in the low frequency sonic range (at least 20 Hz) with an amplitude of about 1 mm-15 mm (and more preferably greater than 2 mm), such as to provide an effective transthoracic tool for acute coronary thrombolysis applications. In a variation, greater than a pair of contacts are utilized to provide oscillatory contact at differing intercostal space levels (in order to maximize vibratory penetration to the heart which is variably situated depending on the patient's anatomy).