Patent
Shape memory alloy treatment
Alan R. Pelton,Thomas W. Duerig +1 more
Reads0
Chats0
TLDR
In this article, a method of treating a component formed from a Ni-Ti-based shape memory alloy, so that the component exhibits super-elasticity, comprises cold working the component, annealing the alloy while the component is restrained in the configuration resulting from the cold working step, and exposing the component to a temperature that is less than the solvus temperature of the alloy and greater than the temperature to which it is exposed in the Annealing step to cause the A f temperature to be reduced.Abstract:
A method of treating a component formed from a Ni-Ti based shape memory alloy, so that the component exhibits super-elasticity, comprises cold working the component, annealing the alloy while the component is restrained in the configuration resulting from the cold working step, and exposing the component to a temperature that is less than the solvus temperature of the alloy and greater than the temperature to which it is exposed in the annealing step to cause the A f temperature to be reduced.read more
Citations
More filters
Patent
Elongate medical device with continuous reinforcement member
TL;DR: In this article, an elongate medical device including an inner elongate member, a reinforcing member, and an outer tubular member is described, where the reinforcing member may be a helically wound continuous wire including a first portion having a first cross-sectional profile, a second portion having another crosssectional profile and a transition region located between the first portion and the second portion.
Patent
Cardiac valve prosthesis
TL;DR: A cardiac-valve prosthesis which can be used as a valve for percutaneous implantation is described in this paper, which includes an armature for anchorage of the valve prosthesis in the implantation site.
Patent
Non-foreshortening intraluminal prosthesis
TL;DR: An annular prosthesis is a set of struts and apices connected to form an annular configuration as discussed by the authors, where the connecting members have a plurality of alternating segments that function to compensate for the smaller longitudinal dimension of each annular element in the expanded state.
Patent
Minimally-invasive cardiac-valve prosthesis
TL;DR: In this paper, a cardiac-valve prosthesis is adapted for percutaneous implantation, which includes an armature adapted for deployment in a radially expanded implantation position, the armature including a support portion and an anchor portion, which are substantially axially coextensive with respect to one another.
Patent
Medical device for navigation through anatomy and method of making same
Stephen C. Jacobsen,Clark C. Davis,Clay Northrop,Ted W. Layman,Kevin T. Olson,Snyder Edward J,D. Kent Backman,Todd H. Turnlund +7 more
TL;DR: In this paper, a core wire, a slotted tubular member, or both are used for navigation through anatomy, including guidewires, which may have a step, ridge, or taper at the joints to the tubular members, and may be flattened at the distal tip.
References
More filters
Patent
Method of treating a sample of an alloy
TL;DR: In this paper, a method of treating a sample of an alloy which is capable of transforming between martensitic and austenitic phases, to render the alloy pseudoelastic was proposed.
Patent
Shape memory alloys
Keith Melton,Olivier Dr Mercier +1 more
TL;DR: In this paper, a shape memory alloy is provided, having a base of nickel and titanium, and additionally comprising up to 30 wt.% copper, and from 0.01 to 5 wt% of at least one element selected from the group consisting of aluminum, zirconium, cobalt, chromium and iron.
Patent
METHOD OF PROCESSING .beta. PHASE NICKEL TITANIUM BASE ALLOYS AND ARTICLES PRODUCED THEREFROM
Thomas W. Duerig,Keith Melton +1 more
TL;DR: In this article, a method for processing beta-phase nickel/titanium base alloys is described, where the alloys are warm worked and then warm annealed.
Patent
Manufacture of shape memory alloy
TL;DR: In this article, a shape memory alloy consisting of 49.3-50.5% Ni and the balance composed mainly of Ti is workhardened by means of cold rolling, etc., to be formed into high-density dislocation structure, which is subjected, after the above work hardening, to heat treatment in the temp. region between 200 deg.C and a temp. below the recrystallization temp.
Patent
Manufacture of shape memory ni-ti alloy
TL;DR: In this article, a shape memory alloy consisting of 47.0-53.0atom% Ni and the balance Ti is hot worked and cold worked and deformed to a prescribed shape to be memorized at room temperature.