US 12,357,801 B2
Expandable sheath with interlock dilator
Christopher Nason Korkuch, Danvers, MA (US); Robert Fishman, Danvers, MA (US); Michael Thomas Finnegan, Danvers, MA (US); Charles DeLorenzo, Danvers, MA (US); Andrew Gentile, Danvers, MA (US); Anne Gabrielle McLoughlin, Danvers, MA (US); Robert Swierczek, Danvers, MA (US); Matthew D'Agostino, Danvers, MA (US); and Jonathan Barry, Danvers, MA (US)
Assigned to ABIOMED, INC., Danvers, MA (US)
Filed by ABIOMED, Inc., Danvers, MA (US)
Filed on Feb. 16, 2024, as Appl. No. 18/443,687.
Application 18/443,687 is a continuation of application No. 18/131,608, filed on Apr. 6, 2023, granted, now 11,944,770.
Application 18/131,608 is a continuation of application No. 17/165,421, filed on Feb. 2, 2021, granted, now 11,660,434, issued on May 30, 2023.
Claims priority of provisional application 62/969,318, filed on Feb. 3, 2020.
Prior Publication US 2024/0307668 A1, Sep. 19, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 29/02 (2006.01); A61B 17/34 (2006.01); A61M 60/165 (2021.01)
CPC A61M 29/02 (2013.01) [A61B 17/3468 (2013.01); A61M 2029/025 (2013.01); A61M 60/165 (2021.01); A61M 2205/0238 (2013.01); A61M 2205/0266 (2013.01)] 28 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
a sheath comprising:
a body having a proximal opening, a distal opening, an inner surface, and an outer surface; and
a step feature within the distal opening, the step feature having a first surface that abuts the inner surface of the body and that is oriented at a first angle relative to the inner surface of the body;
a dilator comprising:
a body;
a tapered tip; and
an interlock between the body and the tapered tip having a first section with a first outer diameter, a second section with a second outer diameter that is less than the first diameter, and a catch surface that abuts the first section and that is oriented at a second angle relative to the first section; and
wherein the dilator is configured to be inserted into the sheath through the proximal opening of the body of the sheath; and
wherein the catch surface is configured to engage the first surface of the step feature to resist the body of the dilator from moving distally beyond the distal opening of the sheath.