US 12,409,301 B2
Wedge-lock sheath retention mechanism
Kevin McConnell, Minneapolis, MN (US); John McSweeney, Cork (IE); Eric Douglas Nygaard, Eden Prairie, MN (US); Daniel Patrick Sexton, Cork (IE); and Nicholas Lee Tassoni, Ramsey, MN (US)
Assigned to Boston Scientific Scimed, Inc., Maple Grove, MN (US)
Filed by BOSTON SCIENTIFIC SCIMED, INC., Maple Grove, MN (US)
Filed on Sep. 24, 2020, as Appl. No. 17/031,070.
Claims priority of provisional application 62/904,864, filed on Sep. 24, 2019.
Prior Publication US 2021/0085924 A1, Mar. 25, 2021
Int. Cl. A61M 25/01 (2006.01); A61M 25/00 (2006.01); A61M 25/09 (2006.01)
CPC A61M 25/0102 (2013.01) [A61M 25/09 (2013.01); A61M 2025/0062 (2013.01); A61M 2025/09125 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A medical device system, comprising:
a sheath having a proximal end, a distal end, an intermediate region disposed between the proximal end and the distal end, and a lumen extending from the proximal end to the distal end, the sheath further comprising a longitudinally extending slot extending distally from the proximal end of the sheath, the longitudinally extending slot terminating proximally of the intermediate region;
a pusher wire slidably disposed within the lumen of the sheath, wherein a distal end of the pusher wire is configured to releasably engage an embolic coil positioned within the distal region of the lumen of the sheath; and
a locking element configured to non-threadably engage the sheath, the locking element having a proximal end, a distal end, an intermediate region disposed between the proximal end and the distal end of the locking element, and a lumen extending from the proximal end to the distal end of the locking element, the lumen of the locking element having a generally hourglass shape;
wherein a distal end region of the locking element is configured to freely slide over the proximal end of the sheath;
wherein when the intermediate region of the locking element is disposed over the proximal end of the sheath, the locking element is configured to depress the sheath radially inwards onto a proximal end of the pusher wire.