NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
发明人:
HANADA KOTARO,花田 幸太郎,MATSUZAKI KUNIO,松崎 邦男
申请号：
JP2017084714
公开号：
JP2017170528A
申请日:
2017.04.21
申请国别(地区):
JP
年份:
2017
代理人:
摘要：
PROBLEM TO BE SOLVED: To provide an extraction processing device for manufacturing a thin wall capillary for use of a biodegradable medical apparatus composed of a circular pipe with a magnesium material as a base material, that is, the extraction processing device for manufacturing the thin wall capillary capable of reducing a diameter so as to accurately become a desired outer diameter and an inner diameter over the whole area in its longitudinal direction and the circumferential direction, by using the circular pipe formed as the final thickness.SOLUTION: An extraction processing device of the present invention comprises at least first means having a part α for enclosing by contacting in the circumferential direction so as to diametrically reduce a circular pipe and columnar second means oppositely arranged to a minimum inner diameter part of the part α and supporting the circular pipe on a side surface, and comprises means in which the central axis of the minimum inner diameter part and the central axis of the second means coincide with the extraction direction of the circular pipe, and the first means and the second means are separated by a thickness quantity of the circular pipe over the whole circumference, and one end of the second means is retreated to motion of the circular pipe while projecting in the extraction direction of the circular pipe in the minimum inner diameter part.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】マグネシウム材料を基材とした円管からなる生分解性医療器具用途の薄肉細管を作製する引抜き加工装置であって、最終肉厚とした円管を用い、その長手方向および周方向の全域に渡って、精度良く所望の外径、内径となるように縮径化を図ることが可能な、薄肉細管を作製する引抜き加工装置を提供する。【解決手段】本発明の引抜き加工装置は、円管を縮径するように周方向に接して囲む部位αを有する第一手段と、前記部位αの最小内径部と対向するように配され、側面において前記円管を支える円柱状の第二手段と、を少なくとも備え、前記最小内径部の中心軸と前記第二手段の中心軸とが前記円管の引抜き方向と一致し、前記第一手段と前記第二手段とが、全周に渡ってわたって前記円管の肉厚分だけ離間しており、前記第二手段の一端を、前記最小内径部において前記円管の引抜き方向に突出させつつ、前記円管の動きに対して後退させる手段を有する。【選択図】図1
