US 11,806,488 B2
Medical device including a solderable linear elastic nickel-titanium distal end section and methods of preparation therefor
Raleigh A. Purtzer, Temecula, CA (US)
Assigned to Abbott Cardiovascular Systems, Inc., Santa Clara, CA (US)
Filed by Abbott Cardiovascular Systems, Inc., Santa Clara, CA (US)
Filed on Aug. 7, 2017, as Appl. No. 15/670,761.
Application 15/670,761 is a continuation of application No. 13/172,278, filed on Jun. 29, 2011, granted, now 9,724,494.
Prior Publication US 2017/0333683 A1, Nov. 23, 2017
Int. Cl. A61M 25/09 (2006.01); B23K 35/30 (2006.01); B23K 35/00 (2006.01); B23K 35/02 (2006.01); C22F 1/00 (2006.01); C22F 1/10 (2006.01); C22F 1/18 (2006.01); B23K 103/04 (2006.01); B23K 103/14 (2006.01); B23K 103/18 (2006.01); C21D 7/02 (2006.01)
CPC A61M 25/09 (2013.01) [B23K 35/007 (2013.01); B23K 35/025 (2013.01); B23K 35/30 (2013.01); B23K 35/3006 (2013.01); B23K 35/3013 (2013.01); C22F 1/006 (2013.01); C22F 1/10 (2013.01); C22F 1/183 (2013.01); A61M 2025/09083 (2013.01); A61M 2025/09108 (2013.01); A61M 2025/09133 (2013.01); B23K 2103/05 (2018.08); B23K 2103/14 (2018.08); B23K 2103/26 (2018.08); C21D 7/02 (2013.01); C21D 2201/01 (2013.01); C21D 2211/001 (2013.01); C21D 2211/008 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A shapeable medical device configured to allow a practitioner to shape a distal end to a desired shape for tracking through a patient's vasculature, the shapeable medical device comprising:
an elongate shaft member comprising:
an elongate proximal portion;
a distal portion extending distally from the elongate proximal portion, the distal portion comprising a distal end portion comprising a proximal end section and a practitioner-shapeable distal end section, wherein the proximal end section is formed of a material that does not exhibit superelasticity and the practitioner-shapeable distal end section (i) being formed of a nickel titanium alloy, (ii) in a martensite phase at body temperature and having a stress-strain curve without any flat plateau stresses, (iii) with a metallic material applied over and coating an entirety of the nickel titanium alloy and a portion of the proximal end section of the distal end portion, a proximal terminal end of the metallic material being distal a proximal terminal end of the proximal end section, (iv) such that the practitioner-shapeable distal end section does not exhibit a phase transformation or onset of stress-induced martensite as the practitioner-shapeable distal end section is stressed and is linear pseudoelastic;
a second distal portion between the proximal end section and the practitioner-shapeable distal end section, wherein the second distal portion between the proximal end section and the distal end section comprises a superelastic nickel-titanium alloy, and wherein (i) the proximal end section comprises a material that does not exhibit superelasticity and (ii) the distal end section is linear pseudoelastic;
a helical coil section disposed around at least the practitioner-shapeable distal end section; and
an atraumatic cap section attached to the helical coil section and the metallic material of the practitioner-shapeable distal end section,
wherein a portion of the helical coil is embedded in the atraumatic cap section and the practitioner-shapeable distal end section has a yield stress from 100 ksi to 300 ksi and exhibits 20% to 90% cold work.