Titanium alloy contact ring element having low modulus and large elastic elongation
AssigneeMedtronic, Inc.
InventorsBernard Q. Li, Alan Shi, Daniel S. Sorensen, Darren A. Janzig, Margaret Bush
Life of this patent
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Abstract
A method of forming a medical device contact element includes annealing an elongated rod of Ti-15Mo alloy material to form an annealed rod having a Young's Modulus of less than 13.5 Mpsi and an elastic range or strain of at least 0.7%. Then forming a contact ring element from the annealed rod and assembling the contact ring element into a medical device. Contact rings and lead receptacles including the same are also described.
Claims17
A contact ring element for electrically coupling a medical lead to an implantable medical device, comprising:
- a tubular body formed from a solid, annealed rod of Ti-15Mo alloy material having an outer diameter between 2 mm and 10 mm, a Young's Modulus of less than 13.5 Mpsi, an elastic range or strain of at least 0.7%, and 0.1 to 3% by weight of alpha-phase titanium, the tubular body defining a cavity configured to receive a lead and an outer diameter between 1.2 mm and 5 mm;
- and
- a plurality of resiliently deflectable elements extending from the tubular body into the cavity, each of the resiliently deflectable elements having a lead contacting portion configured to contact a lead when the lead is received in the cavity,
- wherein the resiliently deflectable elements are formed of the Ti-15Mo alloy material having the Young's Modulus of less than 13.5 Mpsi, the elastic range or strain of at least 0.7%, and the 0.1 to 3% by weight of alpha-phase titanium.
A contact ring element for electrically coupling a medical lead to an implantable medical device, comprising:
- a tubular body formed from a solid, annealed rod of Ti-15Mo alloy material having an outer diameter between 2 mm and 10 mm, a Young's Modulus of less than 13.5 Mpsi, a mean average grain size value of up to 30 micrometers, alpha-phase titanium in an amount of 0.1 to 3 wt %, and an elastic range or strain of at least 0.7%, the tubular body defining a cavity configured to receive a lead and an outer diameter between 1.2 mm and 5 mm;
- and
- a plurality of resiliently deflectable elements extending from the tubular body into the cavity, each of the resiliently deflectable elements having a lead contacting portion configured to contact a lead when the lead is received in the cavity, wherein the resiliently deflectable elements are formed of the Ti-15Mo alloy material having the Young's Modulus of less than 13.5 Mpsi, the mean average grain size value of up to 30 micrometers, the alpha-phase titanium in an amount of 0.1 to 3 wt %, and the elastic range or strain of at least 0.7%.
Dependencies are inferred from the claim text.