公开(公告)号：US20110160820A1

公开(公告)日：2011-06-30

申请号：US12939884

申请日：2010-11-04

申请人： Timothy R. Jackson ,  Patrick J. Willoughby

发明人： Timothy R. Jackson ,  Patrick J. Willoughby

IPC分类号： A61N1/05 ,  B29C45/14

CPC分类号： A61N1/05 ,  A61M25/0013 ,  A61M25/0015 ,  A61M25/0032 ,  A61M25/0054 ,  A61N1/375 ,  B29C48/09 ,  B29C48/11 ,  B29C48/18 ,  B29K2995/0082 ,  B29L2016/00 ,  B29L2023/00 ,  B29L2031/7542

摘要： A multi-lumen lead body having a smooth transition between regions of varying stiffness on the lead body is described. In one example, the different regions of the lead body can be formed by altering a mix ratio of the different polymers used to form the lead body during the extrusion process. In another example, two or more layers of polymeric materials are co-extruded, and the cross-sectional thicknesses of each of the layers varied in the different regions of the lead body to achieve different stiffnesses. In yet another example, the internal geometry of the lead body is altered during the extrusion process to alter the physical properties of the lead body in a select region of the lead body. In still yet another example, a transition member is provided between regions of varying stiffness to facilitate a smooth transition between the different regions.

摘要翻译： 描述了在引线体上具有变化刚度的区域之间平滑过渡的多腔引线体。 在一个实例中，引线体的不同区域可以通过改变在挤出过程中用于形成引线体的不同聚合物的混合比来形成。 在另一个实例中，共挤出两层或更多层聚合物材料，并且各层的横截面厚度在引线体的不同区域中变化以实现不同的刚度。 在另一个示例中，引线体的内部几何形状在挤出过程期间被改变，以改变引线体在引线体的选择区域中的物理性质。 在又一示例中，在变化刚度的区域之间提供过渡构件，以促进不同区域之间的平滑过渡。