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The OW100S is indicated to provide acoustic pressure shockwaves in the treatment of chronic, fullthickness diabetic foot ulcers with wound areas measuring no larger than 16 cm2. which extend through the epidermis, dermis, tendon, or capsule, but without bone exposure. The OW100S is indicated for adult (22 years and older), diabetic patients presenting with diabetic foot ulcers greater than 30 days in duration and is indicated for use in conjunction with standard diabetic ulcer care. The OW100S is indicated to provide acoustic pressure shockwaves in the treatment of superficial partial thickness second dearee burns in adults (22 years or older). The OW100S is indicated for use in conjunction with standard of care burn treatment(s).

The OW100S is a pulsed acoustic wave device. It includes an electrically powered generator to generate a high voltage spark in water that rapidly expands to create the acoustic waves, which in turn are propagated through a water-filled coupling membrane attached applicator. The hand-held applicator reflects the acoustic waves towards the treatment area through a silicone membrane and ultrasound transmission gel. Model OW100S and applicator OP155S includes a "break circuit" in the acoustic wave generator which increases the available pulses per handheld applicator/electrode from 100K pulses at low energy flux density in the device. Updates to labeling of the OW 100S includes revisions to contraindications/warnings/ cautions which do not raise different questions of safety and effectiveness, as they are in line with currently marketed acoustic wave devices for the same indications for use. There are no changes to the power output performance, electrode and reflector geometry, total primary electrical energy, energy flux density or penetration as a result of this change.