US 12,256,939 B2
Vaso-occlusive device delivery system
Clifford Teoh, Los Altos, CA (US); Timothy Odell, Fremont, CA (US); Hancun Chen, San Ramon, CA (US); Lantao Guo, San Ramon, CA (US); and Richard Murphy, Sunnyvale, CA (US)
Assigned to Stryker Corporation, Kalamazoo, MI (US); and Stryker European Operations Holdings, LLC, Kalamazoo, MI (US)
Filed by STRYKER CORPORATION, Kalamazoo, MI (US); and STRYKER EUROPEAN OPERATIONS HOLDINGS LLC, Kalamazoo, MI (US)
Filed on Mar. 23, 2023, as Appl. No. 18/189,169.
Application 18/189,169 is a continuation of application No. 16/711,327, filed on Dec. 11, 2019, granted, now 11,622,772.
Application 16/711,327 is a continuation of application No. 15/664,247, filed on Jul. 31, 2017, granted, now 10,537,333, issued on Jan. 21, 2020.
Application 15/664,247 is a continuation of application No. 14/206,176, filed on Mar. 12, 2014, granted, now 9,717,502, issued on Aug. 1, 2017.
Claims priority of provisional application 61/785,730, filed on Mar. 14, 2013.
Prior Publication US 2023/0225738 A1, Jul. 20, 2023
Int. Cl. A61B 17/12 (2006.01)
CPC A61B 17/1214 (2013.01) [A61B 17/12031 (2013.01); A61B 2017/12068 (2013.01); A61B 2017/12077 (2013.01); A61B 2017/1209 (2013.01); A61B 17/12154 (2013.01)] 13 Claims
OG exemplary drawing
 
5. A vaso-occlusive device delivery assembly, comprising:
a pusher assembly, the pusher assembly comprising
a proximal end,
a distal end,
first and second conductors extending between the proximal and distal ends,
a thermally-degradable composite sacrificial link disposed at the distal end and electrically coupled between the respective first and second conductors, the composite sacrificial link including an electrically conductive member and an electrically insulating member partially disposed in the electrically conductive member, leaving an exposed portion of the electrically conductive member, such that the first conductor, the electrically conductive member, and the second conductor, respectively, form an electrical circuit, and
an outer sleeve coupled to and completely covering the sacrificial link and configured to thermally insulate the sacrificial link from an environment external to the pusher assembly; and
a vaso-occlusive device secured to the pusher assembly by the sacrificial link,
wherein the composite sacrificial link is configured to generate heat that thermally disintegrates the sacrificial link when a disintegration current is applied through the sacrificial link, thereby releasing the vaso-occlusive device from the pusher assembly, and
wherein the pusher assembly further comprises a pusher conduit having a lumen, a proximal seal affixed within the lumen of the pusher conduit.