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    • 81. 发明授权
    • Non-contact magnetoresonant implant system and techniques for periodic
corneal re-shaping
    • 非接触式磁共振植入系统和周期性角膜重塑技术
    • US06006756A
    • 1999-12-28
    • US128056
    • 1998-08-03
    • John H. Shadduck
    • John H. Shadduck
    • A61B17/52A61F13/00A61M37/00A61N1/08A61B17/36
    • A61F2/147A61B18/08A61F2009/00872A61F2210/009A61F9/0079A61N2/02
    • A system and technique called magnetoresonant induction of an intrastromal implant that is adapted for corneal re-shaping. The technique is utilized to correct mild to high hyperopia and presbyopia by steepening the anterior corneal curvature in a single treatment, or in periodic treatments over the lifetime of the patient. The system comprises a combination of components including (i) at least one implantable magnetoresonant intrastromal segment, and (ii) an oscillating magnetic field generator together with a dosimetry control system including at least one emitter body adapted for positioning proximate to the patient's eye and intrastromal implant. The system can deliver thermal effects to appropriate stromal lamellae by non-contact inductive heating of the implant which in turn contracts or compresses stromal collagen fibrils into a circumferential cinch about an anterior layer of the cornea and steepens the anterior corneal curvature. A dosimetry control system controls the power level and duration of exposure of the oscillating magnetic field(s) and may be combined with intraoperative corneal topography.
    • 称为腔内植入物的磁共振诱导的系统和技术,适用于角膜重塑。 该技术用于通过在单次治疗中陡峭的前角膜曲率或在患者的一生中的定期治疗中来矫正轻度至高度的远视和老花眼。 该系统包括组件的组合,包括(i)至少一个可植入的磁共振腔内质膜段,和(ii)振荡磁场发生器以及剂量测定控制系统,该剂量测定系统包括至少一个发射体,其适合于靠近患者的眼睛定位和内分泌 注入。 该系统可以通过植入物的非接触感应加热将热效应传递给适当的基质薄片,这又将基质胶原原纤维收缩或压缩成围绕角膜前层的周围束缚,并使前角膜曲率变得更陡峭。 剂量测量控制系统控制振荡磁场的功率水平和暴露持续时间,并且可以与术中角膜形态结合。