Massage device and method of use

A method for using a massage device that includes a housing, an electrical input, a motor, a switch in electrical communication with the electrical input and the motor, the switch configured to selectively provide power from the electrical input to the motor, an actuated output operatively connected to the motor, wherein the actuated output is configured to reciprocate in response to activation of the motor, and a first treatment structure having a first shape removably secured to the actuated output, wherein the method comprises the steps of:

• applying the first treatment structure to a body part;
• activating the switch such that the first treatment structure reciprocates at a frequency of between 15 Hz and 100 Hz, and at an amplitude of between 0.15 inches and 1.0 inches and provides therapeutically beneficial treatment to the body part;
• removing the first treatment structure and replacing it with a second treatment structure having a second shape;
• applying the second treatment structure to the body part;
• and
• activating the switch such that the second treatment structure reciprocates at a frequency of between 15 Hz and 100 Hz, and at an amplitude of between 0.15 inches and 1.0 inches and provides therapeutically beneficial treatment to the body part,
• wherein the housing includes a gear member disposed therein that rotates about a gear rotation axis, wherein the actuated output is operatively connected to the gear member, wherein an eccentric interface is disposed on the gear member at a location other than the gear rotation axis, wherein the massage device includes a reciprocator shaft operatively connected to the eccentric interface, and a containment member, wherein a head of the reciprocator shaft is contained by the containment member to restrict motion of the reciprocator shaft to a linear motion that is perpendicular to the gear rotation axis, wherein the containment member defines a reciprocation space in which the head of the reciprocator shaft can reciprocate, wherein the containment member includes legs that extend toward the gear member and at least partially define the reciprocation space, and wherein each leg defines a step on an inside surface thereof.