Manufacturing of Microparts for medical and Dental Use by Plastic working

通过塑料加工制造医疗和牙科用微型零件

• 批准号: 15360393
• 负责人: YOSHIDA Kazunari
• 金额: $ 8.38万
• 依托单位: Tokai University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15360393/
• 关键词: Micro-parts; Plastic working; Medical and dental; Super fine wire; Super fine tube; Shape-memory-alloy; Titanium; Micro-forming; 極細異形線; 医科歯科用細管; 引抜き; マイクロ加工; マイクロねじ; 有限要素法

The development of advanced medical treatment and new medical instrument is expected. Using Ni-Ti shape memory alloy, titanium and stainless steel, we study the fabrication of micro-parts for medical and dental use such as catheters, stents, needles, micro-screw, micro-spring and orthodontics wire by plastic working.(1) The optimal production-process design and drawing conditions for fabrication of fine tubes for medical stents with a diameter of 1mm or less were examined. Mandrel drawing using a copper or titanium wire mandrel is effective and enable fabrication of ultrafine tubes for stents. Also we proposed the new mandrel drawing with the liquid.(2) Optimization for reduction and die angle in drawing was performed, which enable us to fabricate micro square wire in which diameter is 100 μm, it was possible to make the micro spring.(3) The fabrication of an M0.8 microscrew was possible using the drawn titanium and magnesium alloy wire obtained.

先进医疗和新型医疗器械的发展令人期待。采用镍钛形状记忆合金、钛和不锈钢，研究了塑性加工制造导管、支架、针头、微螺钉、微弹簧、正畸丝等医用和牙科用微型零件。(1)研究了直径1mm以下医用支架细管的最佳生产工艺设计和拉拔条件。使用铜或钛线心轴进行心轴拉拔是有效的，并且能够制造用于支架的超细管。我们还提出了新的液体心轴拉拔方法。(2)对拉拔过程中的压下量和模具角度进行了优化，使我们能够制造直径为100μm的微方线，从而可以制造微型弹簧。(3)使用所获得的拉拔钛镁合金线材可以制造M0.8微型螺钉。

项目成果

Mandrel drawing and plug drawing of shape-memory-alloy tine tubes used in catheters and stents

导管和支架用形状记忆合金尖管的芯轴拉拔和塞拉拔

• 发表时间: 2004
• 期刊: J.Materials Processing Technology 153-154
• 作者: K.Yoshida;H.Furuya
• 通讯作者: H.Furuya

Optimum Drawing Conditions for Shaped Microwire of 100-400μm Size

100-400μm尺寸异形微丝的最佳拉丝条件

• 发表时间: 2005
• 期刊: ICTP2005, Part. Microforming Vol.1
• 作者: K.Yoshida;M.Maejima
• 通讯作者: M.Maejima

Deformation analysis of surface crack in rolling and wire drawing

轧制、拉丝表面裂纹变形分析

• 发表时间: 2005
• 期刊: JSME International Journal, Series A Vol.48, No.4
• 作者: T.Shinohara;K.Yoshida
• 通讯作者: K.Yoshida

Mandrel drawing and plug drawing of shaped-memory-alloy fine tubes used in catheters and stents

导管和支架用形状记忆合金细管的芯轴拉拔和塞拉拔

• 发表时间: 2004
• 期刊: J. Materials Processing Technology 153-154
• 作者: K.Yoshida;H.Furuya
• 通讯作者: H.Furuya

Cold Drawing of Magnesium Alloy wire and Fabrication of Microscrews

镁合金丝冷拔及微型螺钉的制造

• 发表时间: 2004
• 期刊: J.of steel and related Materials Vol.1
• 作者: K.Yoshida;H.Furuya;真鍋 幸男 (共著);K.Yoshida
• 通讯作者: K.Yoshida