Clinical Trial to Evaluate Ultrasonic Surgical Device in Chronic Pressure Ulcer

Clinical Trial to Evaluate Efficacy and Safety of Ultrasonic Surgical Device (ULSC-12D)in Chronic Pressure Ulcer

Study objective The purpose of this trial is to evaluate the efficacy and safety of the investigational device, ULSD-12D, as Compared to the comparator, SONOCA-180, in chronic wound.

• Study design Multi-center, randomized clinical trial
• Study population Adults with chronic wound
• Investigational device treatment procedure Before Treatment: The subject's eligibility (inclusion/exclusion criteria) will be assessed,and apply the Study Device or Comparator on their wound in a randomized manner. Post-Treatment: All subjects will take pictures of the wound area and measured the number of microorganism and wound size.

Inclusion Criteria:

• over 20 years of age
• subject who has untreated wounds
• subject who has wound size over 3cm x 3cm
• subject who has wound over stage 2

Exclusion Criteria:

• cellulitis