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WO2023075691A3 - Methods of fabricating stents and stents thereof - Google Patents

Methods of fabricating stents and stents thereof Download PDF

Info

Publication number
WO2023075691A3
WO2023075691A3 PCT/SG2022/050766 SG2022050766W WO2023075691A3 WO 2023075691 A3 WO2023075691 A3 WO 2023075691A3 SG 2022050766 W SG2022050766 W SG 2022050766W WO 2023075691 A3 WO2023075691 A3 WO 2023075691A3
Authority
WO
WIPO (PCT)
Prior art keywords
stents
feature
stent
free hanging
methods
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/SG2022/050766
Other languages
French (fr)
Other versions
WO2023075691A2 (en
Inventor
Sin Liang SOH
Ying Hsi Jerry FUH
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
National University of Singapore
Original Assignee
National University of Singapore
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by National University of Singapore filed Critical National University of Singapore
Publication of WO2023075691A2 publication Critical patent/WO2023075691A2/en
Publication of WO2023075691A3 publication Critical patent/WO2023075691A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00—Processes of additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/20—Direct sintering or melting
    • B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/40—Structures for supporting workpieces or articles during manufacture and removed afterwards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • B22F3/11—Making porous workpieces or articles
    • B22F3/1103—Making porous workpieces or articles with particular physical characteristics
    • B22F3/1115—Making porous workpieces or articles with particular physical characteristics comprising complex forms, e.g. honeycombs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
    • B22F5/106—Tube or ring forms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y80/00—Products made by additive manufacturing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Materials For Medical Uses (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
  • Prostheses (AREA)

Abstract

The present disclosure concerns a method of 3D printing a stent from a digital model sliced into at least two layers with at least one of the layer having at least one free hanging feature or overhang feature. The method comprises performing selective laser melting on a metal powder to form a support, and subsequently performing selective laser melting on the metal powder in to form the free hanging feature or overhang feature such that the support is positioned below the free hanging feature or overhang feature and is not fused with the stent. The present disclosure also concerns a stent made using the method.
PCT/SG2022/050766 2021-10-27 2022-10-26 Methods of fabricating stents and stents thereof Ceased WO2023075691A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SG10202111919U 2021-10-27
SG10202111919U 2021-10-27

Publications (2)

Publication Number Publication Date
WO2023075691A2 WO2023075691A2 (en) 2023-05-04
WO2023075691A3 true WO2023075691A3 (en) 2023-06-15

Family

ID=86160650

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SG2022/050766 Ceased WO2023075691A2 (en) 2021-10-27 2022-10-26 Methods of fabricating stents and stents thereof

Country Status (1)

Country Link
WO (1) WO2023075691A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117182105A (en) * 2023-08-18 2023-12-08 上海汉邦联航激光科技有限公司 Method for manufacturing oil valve seat based on laser selective melting technology and oil valve seat

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080131479A1 (en) * 2006-08-02 2008-06-05 Jan Weber Endoprosthesis with three-dimensional disintegration control
US20090274740A1 (en) * 2008-05-01 2009-11-05 Boston Scientific Scimed, Inc. Drug-loaded medical devices and methods for manufacturing drug-loaded medical devices
US20180303643A1 (en) * 2017-04-19 2018-10-25 Medtronic Vascular, Inc. Method of making a medical device using additive manufacturing with a masking plate
WO2020163915A1 (en) * 2019-02-13 2020-08-20 Flex Memory Ventures Pty Ltd Implantable objects fabricated by additive manufacturing and methods of fabricating the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080131479A1 (en) * 2006-08-02 2008-06-05 Jan Weber Endoprosthesis with three-dimensional disintegration control
US20090274740A1 (en) * 2008-05-01 2009-11-05 Boston Scientific Scimed, Inc. Drug-loaded medical devices and methods for manufacturing drug-loaded medical devices
US20180303643A1 (en) * 2017-04-19 2018-10-25 Medtronic Vascular, Inc. Method of making a medical device using additive manufacturing with a masking plate
WO2020163915A1 (en) * 2019-02-13 2020-08-20 Flex Memory Ventures Pty Ltd Implantable objects fabricated by additive manufacturing and methods of fabricating the same

Also Published As

Publication number Publication date
WO2023075691A2 (en) 2023-05-04

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