Correction information: g6: follow up #1; h2:if follow-up, what type?; h3:device evaluated by manufacture; h6: coding changed based on the investigation result.Additional information: h4:device manufacture date.Evaluation summary: we checked the returned unit and confirmed that the air nozzle clogged.Based on the result, we concluded that it was caused due to the insufficient reprocessing at the facility.In addition, we confirmed that the lg root brace rubber cut, and the root brace rubber cut; however, they are not the main cause, and/or irrelevant to the alleged complaint.
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