Handpiece for non-focused ultrasound treatment

A handpiece for non-focused ultrasound treatment, comprising:

• a housing;
• and
• a cartridge detachably mounted on the housing,
• wherein the cartridge includes:
• an ultrasound generator having a transducer and a cooling block, the transducer being fixed to a lower side of the cooling block;
• a skin cooler for cooling skin of a person being treated;
• and
• an electrical muscle stimulation (EMS) skin stimulator disposed adjacent to the skin cooler, the EMS skin stimulator providing electrical stimulation to the skin of the person,
• the skin cooler includes:
• a cooling case;
• and
• a thermoelectric element connected to the cooling case to absorb heat from the cooling case,
• wherein the cooling case has an opening through which ultrasound waves generated by the transducer pass,
• a contact surface is formed around the opening of the cooling case, and the contact surface is in contact with the skin of the person to absorb heat from the skin of the person, and
• the contact surface forms a cooling wall under the skin of the person around ultrasound waves transferred from the transducer to the skin of the person,
• wherein the cartridge further includes:
• a water block for discharging heat from the thermoelectric element,
• wherein the water block is fixed to an upper side of the thermoelectric element, and the cooling block is fixed to a lower side of the thermoelectric element, and
• heat generated by the transducer is directly absorbed by the thermoelectric element through the cooling block and then transferred to the water block, and
• wherein when the cartridge is replaced, the cartridge including the transducer, the cooling block, the thermoelectric element, and the water block are detached from the housing.