Shape memory articles and methods for controlling properties

US11672883B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-11672883-B2
Application numberUS-201815965284-A
CountryUS
Kind codeB2
Filing dateApr 27, 2018
Priority dateApr 28, 2017
Publication dateJun 13, 2023
Grant dateJun 13, 2023

How to read this patent

A practical reading order for non-experts. Skip the full description unless you need deep technical detail.

  1. Title

    What the patent document calls the invention.

  2. Abstract

    A short plain-language summary of the technical disclosure.

  3. Assignees and inventors

    Who owns or filed the patent and who is credited as inventor.

  4. Key dates

    Filing, priority, publication, and grant dates set the timeline.

  5. First independent claim

    The legal scope of protection — read this for what is actually claimed.

  6. CPC / IPC classifications

    Technology tags used to group this patent with similar filings.

  7. Citations and related patents

    Prior art links and similar publications in this corpus.

Abstract

Official abstract text for this publication.

Methods for controlling properties of structural elements of implantable medical devices, where the structural elements contain shape memory alloys (SMAs) include promoting or inhibiting in vivo formation of R-phase crystal structure or converging or separating the R-phase from the austenite phase.

First claim

Opening claim text (preview).

What is claimed is: 1. A method for enhancing displacement-controlled fatigue performance, increasing ductility or decreasing modulus of a structural element of an implantable medical device, wherein the structural element comprises a shape memory alloy material, the method comprising: a first step consisting essentially of: heating the structural element at a temperature between 580° C. and 620° C. for a time between 30 seconds and 500 minutes to produce a heat-treated structural element; and a second step comprising: shape setting the heat-treated structural element after the structural element is heated. 2. The method of claim 1 , wherein heating the structural element comprises heating the structural element at a temperature between 590° C. and 615° C. 3. The method of claim 1 , wherein heating the structural element comprises heating the structural element at a temperature between 595° C. and 610° C. 4. The method of claim 1 , wherein the time for which the structural element is heated is between 60 seconds and 100 minutes. 5. The method of claim 1 , wherein the shape memory alloy comprises a NiTi alloy.

Assignees

Inventors

Classifications

  • operated at only one temperature whilst inside or touching the human body, e.g. constrained in a non-operative shape during surgery, another temperature only occurring before the operation · CPC title

  • Alloys based on titanium · CPC title

  • A61L27/047Primary

    Other specific metals or alloys not covered by A61L27/042 - A61L27/045 or A61L27/06 · CPC title

  • C22F1/10Primary

    of nickel or cobalt or alloys based thereon · CPC title

  • Shape memory effect · CPC title

Patent family

Related publications grouped by family.

External sources

Frequently asked questions

Answers are generated from the same data shown on this page.

What does patent US11672883B2 cover?
Methods for controlling properties of structural elements of implantable medical devices, where the structural elements contain shape memory alloys (SMAs) include promoting or inhibiting in vivo formation of R-phase crystal structure or converging or separating the R-phase from the austenite phase.
Who is the assignee on this patent?
Medtronic Inc
What technology area does this patent fall under?
Primary CPC classification A61L27/047. Mapped technology areas include Human Necessities.
When was this patent published?
Publication date Tue Jun 13 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).