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.

预计将开发先进的医疗和新型医疗器械，利用镍钛形状记忆合金、钛和不锈钢，研究制造导管、支架、针头、微型螺钉等医疗和牙科用微型零件。 (1)研究了使用铜或芯轴拉拔制造直径1mm以下医用支架细管的最佳生产工艺设计和拉拔条件。钛丝芯轴是有效的，可以制造用于支架的超细管材。我们还提出了用液体拉拔的新型芯轴。(2)对拉拔过程中的缩径和模具角度进行了优化，这使得我们能够制造直径为以下的微方丝。为100μm，可以制作微型弹簧。(3)利用所获得的钛镁合金拉丝可以制作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

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

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

吉田 一也ほか: "新素材を用いたマイクロネジの製造"日本機会学会第11回機械材料・材料加工講演会論文集. 1. 301-302 (2003)

Kazuya Yoshida 等：“使用新材料制造微型螺钉”日本机械工程师学会第 11 届机械材料和材料加工会议论文集 1. 301-302 (2003)。

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