US 12,251,559 B2
Interventional medical devices, device systems, and fixation components thereof
Xin Chen, Blaine, MN (US); Michael D. Eggen, Chisago City, MN (US); Vladimir Grubac, Brooklyn Park, MN (US); Brian P. Colin, Anoka, MN (US); Wei Gan, Woodbury, MN (US); Thomas A. Anderson, New Hope, MN (US); and Kathryn Hilpisch, Cottage Grove, MN (US)
Assigned to Medtronic, Inc., Minneapolis, MN (US)
Filed by Medtronic, Inc., Minneapolis, MN (US)
Filed on May 3, 2021, as Appl. No. 17/306,032.
Application 17/306,032 is a continuation of application No. 16/158,724, filed on Oct. 12, 2018, granted, now 11,027,125.
Application 16/158,724 is a continuation of application No. 15/410,161, filed on Jan. 19, 2017, granted, now 10,099,050, issued on Oct. 16, 2018.
Claims priority of provisional application 62/281,403, filed on Jan. 21, 2016.
Prior Publication US 2021/0252283 A1, Aug. 19, 2021
Int. Cl. A61N 1/05 (2006.01); A61N 1/362 (2006.01); A61N 1/372 (2006.01); A61N 1/375 (2006.01)
CPC A61N 1/0573 (2013.01) [A61N 1/362 (2013.01); A61N 1/3756 (2013.01); A61N 2001/058 (2013.01); A61N 1/37205 (2013.01)] 28 Claims
OG exemplary drawing
 
1. An implantable medical device (IMD) including a device body extending along a longitudinal axis from a proximal end to a distal end, an electrode mounted in proximity to the distal end of the device body, and a fixation mechanism comprising a plurality of tines formed from an elastically deformable material, each tine of the plurality of tines being fixedly mounted and spaced from one another around a perimeter of the distal end of the device body, wherein each tine of the plurality of tines comprises:
a proximal portion being fixedly attached to the device body, wherein the proximal portion is configured to extend from the device body in a first direction, and wherein the proximal portion is configured to define a first pre-formed curvature; and
a distal portion comprising:
a proximal section configured to extend from the first pre-formed curvature of the proximal portion in a second direction along a relatively straight line;
a hook section extending from the proximal section, wherein the hook section is configured to define a second pre-formed curvature; and
a tip section extending from the hook section to a free distal end,
wherein, when in a deployed configuration, an intersection between the proximal portion and the distal portion of each tine of the plurality of tines is spaced distally from the distal end of the device body, and
wherein the electrode is flush with, or spaced distally from the intersection between the proximal portion and the distal portion by a distance less than or equal to about 2 mm.