US 12,220,336 B2
Constraining mechanisms for selective deployment and associated methods
Jerry J. Stastka, Flagstaff, AZ (US)
Assigned to W. L. Gore & Associates, Inc., Newark, DE (US)
Appl. No. 17/282,918
Filed by W. L. Gore & Associates, Inc., Newark, DE (US)
PCT Filed Oct. 4, 2019, PCT No. PCT/US2019/054652
§ 371(c)(1), (2) Date Apr. 5, 2021,
PCT Pub. No. WO2020/072876, PCT Pub. Date Apr. 9, 2020.
Claims priority of provisional application 62/746,270, filed on Oct. 16, 2018.
Claims priority of provisional application 62/741,948, filed on Oct. 5, 2018.
Prior Publication US 2021/0386567 A1, Dec. 16, 2021
Int. Cl. A61F 2/95 (2013.01); A61B 90/00 (2016.01); A61B 90/92 (2016.01)
CPC A61F 2/95 (2013.01) [A61B 90/39 (2016.02); A61B 90/92 (2016.02); A61F 2002/9511 (2013.01); A61F 2250/005 (2013.01); A61F 2250/0096 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A medical device deployment apparatus, the apparatus comprising:
a constraint configured to releasably constrain the medical device and including a plurality of interlocking strands farming a first knot row configured to unravel at a first deployment rate, a second knot row configured to unravel at a second deployment rate that is different from the first deployment rate, and a third knot row spaced from the first and second knot rows;
wherein disrupting a strand of the first knot row initiates unraveling of at least a portion of the constraint at the first deployment rate, disrupting a strand of the second knot row initiates unravelling of at least a portion of the constraint at the second deployment rate, and disrupting a strand of the third knot row initiates unraveling of at least a portion of the constraint at a third deployment rate that is different that the first and second deployment rates; and
wherein a deployment ratio between the first knot row and the second knot row is different than a deployment ratio between the second knot row and the third knot row.