US 12,220,130 B2
Electrolytic detachment with fluid electrical connection
Vincent Divino, Mission Viejo, CA (US)
Assigned to Covidien LP, Mansfield, MA (US)
Filed by Covidien LP, Mansfield, MA (US)
Filed on Sep. 30, 2020, as Appl. No. 16/948,740.
Application 16/948,740 is a division of application No. 15/619,774, filed on Jun. 12, 2017, granted, now 10,828,037.
Claims priority of provisional application 62/354,939, filed on Jun. 27, 2016.
Prior Publication US 2021/0007753 A1, Jan. 14, 2021
Int. Cl. A61B 17/12 (2006.01); A61F 2/966 (2013.01); A61M 5/142 (2006.01); A61B 17/00 (2006.01); A61B 90/00 (2016.01)
CPC A61B 17/12109 (2013.01) [A61B 17/12031 (2013.01); A61B 17/12113 (2013.01); A61B 17/12145 (2013.01); A61B 17/12172 (2013.01); A61F 2/966 (2013.01); A61M 5/142 (2013.01); A61B 2017/00017 (2013.01); A61B 2017/00867 (2013.01); A61B 2017/00929 (2013.01); A61B 2017/12063 (2013.01); A61B 2090/3966 (2016.02); A61B 2217/007 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method of delivering an implant, the method comprising:
positioning a catheter with a proximal end region outside a patient and a distal end region at a target location within the patient, wherein an infusion electrode is disposed within a sidewall of the catheter with an exposed transmission portion at the catheter distal end region;
advancing an implant attached to a delivery wire by an electrolytically corrodible detachment zone through a lumen of the catheter until the implant is positioned distal to the catheter and the transmission portion of the infusion electrode is within 2 inches of the detachment zone, wherein a distal end portion of the delivery wire disposed distal to the detachment zone is covered with an electrically insulative material, and wherein the implant is attached to the delivery wire via a proximal hub coupled to the distal end portion of the delivery wire such that the proximal hub is separated from the distal end portion of the delivery wire by the electrically insulative material such that the implant is electrically isolated from the delivery wire; wherein the distal end portion of the delivery wire extends distally beyond the proximal hub and has a diameter larger than a diameter of the detachment zone;
applying a voltage potential between (i) a delivery electrode electrically coupled to the electrolytically corrodible detachment zone via the delivery wire and (ii) the infusion electrode electrically coupled to the electrolytically corrodible detachment zone via a fluid from a fluid source disposed outside of the patient; and
while applying the voltage potential, flushing the fluid from the fluid source past the electrolytically corrodible detachment zone.