Introducer sheath having a non-uniform inner surface

Patent metadata

Field	Value
Publication number	US-9895245-B2
Application number	US-201414196651-A
Country	US
Kind code	B2
Filing date	Mar 4, 2014
Priority date	Mar 6, 2013
Publication date	Feb 20, 2018
Grant date	Feb 20, 2018

Abstract

An introducer sheath includes an elongated tubular member having a passageway extending generally longitudinally therethrough. The passageway is defined by an inner surface of the tubular member and configured to receive a medical device movably disposed therein. The introducer sheath further includes a reinforcing member engaged with the inner surface of the tubular member and extending into the passageway such that a non-uniform surface for receiving the medical device is defined thereby. The reinforcing member also has a surface therein suitable for facilitating movement of the medical device through the passageway.

First claim

We claim:

1. An introducer sheath comprising:
an elongated tubular member having a passageway extending generally longitudinally therethrough, the passageway being defined by an inner surface of the tubular member and configured to receive a medical device movably disposed therein; and
a reinforcing member comprising a coating engaged with the inner surface of the tubular member and extending into the passageway such that a non-uniform surface for receiving the medical device is defined thereby,
wherein the reinforcing member comprises a braid, and wherein the braid comprises wires, the wires of the braid form cross-over points, the cross-over points being partially exposed on the inner surface of the tubular member and portions of the braid that do not form cross-over points being completely embedded within in the tubular member.

2. The introducer sheath of claim 1 , wherein the coating comprises a lubricious material.

3. The introducer sheath of claim 1 , wherein the coating comprises poly-fluorocarbon.

4. The introducer sheath of claim 1 , wherein the reinforcing member comprises a metal or metal alloy core.

5. The introducer sheath of claim 1 , in combination with a medical device disposed within the passage of the tubular member and axially supported by the reinforcing member.

6. The introducer sheath of claim 1 , wherein the reinforcing member consists essentially of a polymer.

7. The introducer sheath of claim 5 , wherein the medical device comprises a stent.

8. The introducer sheath of claim 5 , wherein a coefficient of friction between the reinforcing member and the medical device is less than about 0.20.

Assignees

• Cook Medical Technologies Llc

Inventors

• Puckett Dean
• Cannon Tiffani L

Classifications

• A61M25/0053

  having a variable stiffness along the longitudinal axis, e.g. by varying the pitch of the coil or braid · CPC title

• A61M2025/0047

  the inner layer having a higher lubricity · CPC title

• A61F2/962 Primary

  having an outer sleeve · CPC title

• A61M25/0052

  Localized reinforcement, e.g. where only a specific part of the catheter is reinforced, for rapid exchange guidewire port · CPC title

• A61M25/005

  with embedded materials for reinforcement, e.g. wires, coils, braids · CPC title