公开(公告)号：US20250144367A1

公开(公告)日：2025-05-08

申请号：US18832570

申请日：2023-01-26

Applicant: Medtronic, Inc.

Inventor： Marc A. Anderson ,  Timothy Desmond Farrell ,  Fionnuala Morelli ,  Maro J. Sciacchitano ,  Matthew P. Norgrove ,  Luke A. Clarke ,  Mark Desmond Reid ,  Laura Marie Coultry ,  Shridhar R. Sail ,  Alan Thomas McGuinn ,  Mark Casley ,  Susheel R. Deshmukh ,  Jacqueline Bernadette OGorman ,  Patricia McAfee ,  Chris Moran ,  Antonia Trotta

IPC: A61M25/01 ,  A61M25/00

Abstract: An expandable introducer includes a hub and a tubular sheath (121) coupled thereto. The tubular sheath (121) defines a central lumen (103). A circumference of the tubular sheath includes a full thickness region (162) having a first wall thickness (T2) and a reduced thickness region (161) having a second wall thickness (T1) smaller than the first wall thickness (T2). The reduced thickness region (162) is configured to be folded such that the tubular sheath includes an unexpanded, folded state and is configured to expand to an expanded, unfolded state in response to a device passing though the central lumen (103). A first outer diameter of the tubular sheath in the unexpanded, folded state is smaller than a second outer diameter of the tubular sheath in the expanded, unfolded state.

公开(公告)号：US20240358403A1

公开(公告)日：2024-10-31

申请号：US18624078

申请日：2024-04-01

Applicant: Medtronic, Inc.

Inventor： Fionnuala Morelli ,  Emma Harvey

IPC: A61B17/34 ,  A61M25/00 ,  A61M25/06

CPC classification number: A61B17/3439 ,  A61B2017/3433 ,  A61M2025/0025 ,  A61M2025/006 ,  A61M25/0662

Abstract: An expandable introducer includes an introducer hub and an introducer sheath coupled to the introducer hub and extending distally therefrom. The introducer sheath includes a sheath wall, the sheath wall having an interior surface defining a lumen of the introducer sheath and an exterior surface disposed radially outward from the interior surface. The exterior surface may be wavy or ridged to reduce contact surface area between the introducer sheath and a patient's anatomy. The interior surface of the sheath wall may be wavy or ridged to reduce contact surface area between the sheath wall and a dilator and/or delivery system that advances therethrough. The exterior surface of the sheath wall may be textured to aid in hydro-coat retention and/or to reduce surface contact area with a patient's anatomy, thereby reducing track forces during insertion and delivery. The introducer sheath wall may include a spine.