Journal of cutaneous medicine and surgery · 2023
Therapeutic Effectiveness of Needle Injection Versus Needle-Free Jet Injector System for Botulinum Toxin Type A in Palmar Hyperhidrosis.
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Watanabe Hitomi, Ohshima Yuichiro, Watanabe Daisuke
Аннотация
BACKGROUND: The most important problem with local injections of botulinum toxin type A (BTX-A) in palmar hyperhidrosis is pain during the injections.
OBJECTIVES: We evaluated therapeutic effectiveness and pain of local injections of BTX-A using needle-free direct administration system.
METHODS: We performed BTX-A local injection therapy using a conventional injection needle in the left hand and a needle-free direct administration system in the right hand.
RESULTS: A reduction in the quantity of perspiration was observed 4 weeks after administration of both Needle and Needle-free BTX-A, and reduction was maintained throughout 28 weeks observation period. Both hyperhidrosis Disease Severity Scale scores and Dermatology Life Quality Index for hands treated with Needle BTX-A and hands treated with Needle-free BTX-A had decreased significantly by 4 weeks after treatment. Pain visual analog scale scores and the degree of pain were significantly lower in hands treated with Needle-free BTX-A than in hands treated with Needle BTX-A.
CONCLUSIONS: When the trigger of the pressurized needle-free injector device is activated, the gas powered driving pressure propels BTX-A through an orifice (0.13 mm) about four times narrower than a 30 G needle at very high speed. As most pain occurs during the needle prick itself, the advantage of a small orifice coupled with high-speed penetration of BTX-A through the pressurized device results in reduced pain during administration. The needle-free direct administration system administers the injectate under the skin without a visible needle.
OBJECTIVES: We evaluated therapeutic effectiveness and pain of local injections of BTX-A using needle-free direct administration system.
METHODS: We performed BTX-A local injection therapy using a conventional injection needle in the left hand and a needle-free direct administration system in the right hand.
RESULTS: A reduction in the quantity of perspiration was observed 4 weeks after administration of both Needle and Needle-free BTX-A, and reduction was maintained throughout 28 weeks observation period. Both hyperhidrosis Disease Severity Scale scores and Dermatology Life Quality Index for hands treated with Needle BTX-A and hands treated with Needle-free BTX-A had decreased significantly by 4 weeks after treatment. Pain visual analog scale scores and the degree of pain were significantly lower in hands treated with Needle-free BTX-A than in hands treated with Needle BTX-A.
CONCLUSIONS: When the trigger of the pressurized needle-free injector device is activated, the gas powered driving pressure propels BTX-A through an orifice (0.13 mm) about four times narrower than a 30 G needle at very high speed. As most pain occurs during the needle prick itself, the advantage of a small orifice coupled with high-speed penetration of BTX-A through the pressurized device results in reduced pain during administration. The needle-free direct administration system administers the injectate under the skin without a visible needle.