公开(公告)号：US20030110825A1

公开(公告)日：2003-06-19

申请号：US10235080

申请日：2002-09-05

Applicant: Memry Corporation

Inventor： Neal Webb ,  Philippe Poncet ,  Ming H. Wu ,  Scott Carpenter ,  Jesse Perez ,  Paul Adler

IPC: B21D017/02

CPC classification number: B21C1/003 ,  B21C1/24 ,  B21C1/32 ,  B21C3/16 ,  B21C23/002 ,  B21C37/06 ,  B21C45/00 ,  Y10T29/4981

Abstract: The manufacture of seamless tubes in which the process includes providing an assembly having a metal tube blank, and an elongate metal core of shape memory effect material which is surrounded and contacted by the tube blank with a minimal gap. The assembly is elongated by mechanical working thereof at an elevated temperature until the tube blank has been converted into a tube of desired dimensions. After the elongation step, the core is subjected to a treatment which results in the core being in a stretched condition throughout its length, and does not substantially stretch the tube. The core is removed from the tube, and subsequently subjected to drawing passes over a nondeformable mandrel thereby refining the precision of diametric and wall dimensions with improved ID and OD surface quality. There is also decoring and reinserting to improve final dimensions which results in the ability to fabricate smaller, longer tubes.

Abstract translation: 无缝管的制造，其中该方法包括提供具有金属管坯的组件和形状记忆效应材料的细长金属芯，其以最小的间隙被管坯包围和接触。 通过在升高的温度下的机械加工来使组件伸长，直到管坯被转换成所需尺寸的管。 在延伸步骤之后，对芯进行处理，其导致芯在其整个长度上处于拉伸状态，并且基本上不拉伸管。 芯从管中取出，随后在不可变形的芯轴上进行拉伸，从而通过改进的ID和OD表面质量来提高直径和壁尺寸的精度。 还装饰和重新插入以改善最终尺寸，这导致制造更小更长的管的能力。

公开(公告)号：US20030120181A1

公开(公告)日：2003-06-26

申请号：US10287140

申请日：2002-11-04

Applicant: Memry Corporation

Inventor： Mark Toma ,  John Tommessilli ,  Scott Carpenter ,  Jesse Perez

IPC: A61B005/00

CPC classification number: A61M25/09 ,  A61L31/022 ,  A61L31/14 ,  A61L2400/16 ,  A61M25/0045 ,  A61M25/0054 ,  A61M2025/09075 ,  A61M2025/09091

Abstract: The present invention provides a medical guide wire and a method of making same in which, an elongated solid core wire is made of NiTi alloy with a Ni content of about between 55.0 and 56.5 wt % and a reverse martensitic transformation start temperature (As) in the fully annealed state of not more than 55null C. The wire has been thermomechanically processed to exhibit a work-hardened pseudoelasticity. After the last full annealing to regain workability, the wire is cold drawn with a significant amount of cold reduction of greater than 35%, but preferably greater than 38% The entire guide wire is subjected to the same heat treatment. The wire is formed into an elongated solid core. The heating step includes passing the wire through a tube furnace at substantially 280null C. to 370null C. The entire guide wire is subjected to the same heat treating step. The guide wire has centerless grinding performed at an appropriate stage to provide a taper section and a distal section. There may be a coil attached around the distal section of the guide wire and which is made of a deformable material so that it may be deformed to a different radius or angle. Later, an outer jacket is provided which surrounds the core.

Abstract translation: 本发明提供一种医疗用导丝及其制造方法，其中细长的实心芯线由Ni含量为约55.0〜56.5重量％的NiTi合金和反向马氏体相变开始温度（As） 完全退火状态不超过55℃。钢丝已被热机械加工以显示加工硬化的假弹性。 在最后一次完全退火以恢复可加工性之后，电线被冷拉，其中大量的冷还原率大于35％，但优选大于38％。整个导丝被进行相同的热处理。 导线形成为细长的实芯。 加热步骤包括将线穿过基本上280℃至370℃的管式炉。整个导丝经受相同的热处理步骤。 引导线在适当的阶段进行无心磨削以提供锥形部分和远端部分。 可以在引导线的远端部分周围安装一个线圈，该线圈由可变形材料制成，使得其可以变形成不同的半径或角度。 之后，提供包围芯的外套。