MacGregor Jennifer L, Tanzi Elizabeth L
Union Square Laser Dermatology, Columbia University Medical Center, New York, NY, USA.
Semin Cutan Med Surg. 2013 Mar;32(1):18-25.
The demand for noninvasive skin tightening procedures is increasing as patients seek safe and effective alternatives to aesthetic surgical procedures of the face, neck, and body. Over the past decade, radiofrequency and infrared laser devices have been popularized owing to their ability to deliver controlled heat to the dermis, stimulate neocollagenesis, and effect modest tissue tightening with minimal recovery. However, these less invasive approaches are historically associated with inferior efficacy so that surgery still remains the treatment of choice to address moderate to severe tissue laxity. Microfocused ultrasound was recently introduced as a novel energy modality for transcutaneous heat delivery that reaches the deeper subdermal connective tissue in tightly focused zones at consistent programmed depths. The goal is to produce a deeper wound healing response at multiple levels with robust collagen remodeling and a more durable clinical response. The Ulthera device (Ulthera, Inc, Meza, AZ), with refined microfocused ultrasound technology, has been adapted specifically for skin tightening and lifting with little recovery or risk of complications since its introduction in 2009. As clinical parameters are studied and optimized, enhanced efficacy and consistency of clinical improvement is expected.
随着患者寻求面部、颈部和身体美容手术的安全有效替代方案,对非侵入性皮肤紧致手术的需求不断增加。在过去十年中,射频和红外激光设备因其能够向真皮传递可控热量、刺激新胶原生成并以最小的恢复实现适度的组织紧致而得到普及。然而,这些侵入性较小的方法在历史上与疗效较差相关,因此手术仍然是治疗中度至重度组织松弛的首选方法。微聚焦超声最近作为一种新型能量方式被引入,用于经皮热传递,它能在一致的设定深度将热量传递到更深的皮下结缔组织。目标是在多个层面产生更深的伤口愈合反应,实现强大的胶原重塑和更持久的临床效果。自2009年推出以来,采用精细微聚焦超声技术的Ulthera设备(Ulthera公司,亚利桑那州梅萨)已专门用于皮肤紧致和提升,恢复时间短且并发症风险小。随着临床参数的研究和优化,有望提高疗效并增强临床改善的一致性。