Cryolipolysis for Reduction of Arm Fat: Safety and Efficacy of a Prototype CoolCup Applicator With Flat Contour

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BACKGROUNDCryolipolysis of the arms has been shown to be an effective but somewhat time-consuming process.OBJECTIVEThe study evaluated safety and efficacy of a contoured cup cryolipolysis applicator for reduction of arm fat. The prototype was designed to maximize tissue contact with the cooling surface to improve comfort, while reducing treatment time by 25 minutes.MATERIALS AND METHODSBoth arms were treated using a prototype device that delivered treatment in 35 minutes at −11°C. Photographic and ultrasound documentation was captured at baseline and 12 weeks post-treatment. Efficacy was assessed by photo review and measurement of fat reduction in ultrasound images. Immediately after 1, 4, and 12 weeks post-treatment, clinical assessments were performed to evaluate treatment areas and sensory alterations.RESULTSThirty women were enrolled and completed treatments to both arms. Ultrasound measurements found mean fat layer reduction of 3.2 mm with an SD of 2.7 mm. Blinded independent photo review found 85.2% correct identification of baseline photographs by at least 2/3 of reviewers. There were no unanticipated adverse device effects. Four study subjects experienced numbness in the treatment area beyond the 12-week visit that subsequently resolved without intervention.CONCLUSIONThese data suggest that the CoolCup prototype applicator provides rapid, safe, and effective arm treatment.

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