Crimpable balloon stent protector

• US 7,998,184 B2
• Filed: 08/09/2004
• Issued: 08/16/2011
• Est. Priority Date: 02/22/2001
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Inventors: Eidenschink, Tracee E. J.
• Primary Examiner(s): SNOW, BRUCE EDWARD
• Application Number:
  US10/914,569
• Publication Number:
  US 20050033404A1
• Time in Patent Office: 2,563 Days
• Field of Search: 623/1.11, 623/1.12, 623/1.23, 606/108, 606/195
• US Class Current: 623/1.11
• CPC Class Codes: A61F 2/0095 Packages or dispensers for prostheses or other implants for intraocular lenses A61F2/1691; for dental surgery A61C19/02
• CPC Class Codes: A61F 2/9522 Means for mounting a stent or stent-graft onto or into a placement instrument
• CPC Class Codes: A61F 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61M 2025/1081 having sheaths or the like for covering the balloon but not forming a permanent part of the balloon, e.g. retractable, dissolvable or tearable sheaths
• CPC Class Codes: A61M 25/10 Balloon catheters A61M25/0125 takes precedence; embolectomy A61B17/22032; retractors A61B17/02; inflatable balloons for placing stents or stent-grafts A61F2/958 ; stomach balloons for treatment of obesity A61F5/0003; oesophagal tubes A61J15/00

Abstract

A protective sleeve for a catheter assembly comprising a tubular member composed of a first material. The first material having a first predetermined modulus of elasticity. The tubular member having at least one stripe of a second material engaged thereto. The second material having a greater modulus of elasticity than the first material. The tubular member having a loading state and being crimpable to a reduced state. In the loading state the tubular member being sized to disposingly engage the balloon of a catheter assembly wherein the balloon has a first diameter. When the tubular member is in the reduced state the tubular member is disposingly and retainingly engaged to the balloon. When the tubular member is in the reduced state the balloon has a second diameter which is less than the first diameter.

Claims

1. A catheter assembly comprising:

a balloon;

a stent, the stent being disposed about at least a portion of the balloon, the stent on the balloon defining a diameter, the diameter being crimped between a nominal diameter configuration and a reduced diameter configuration less than the nominal diameter configuration; and

a protective sleeve, the protective sleeve being removably disposed about the balloon and stent, the protective sleeve comprising;

a tubular member composed of a first material and at least one stripe of a second material engaged thereto, the second material characterized as being harder than the first material,

the tubular member having a loading state and being crimpable to a crimped state, in the loading state the tubular member having a first diameter and in the crimped state the tubular member having a second diameter less than the first diameter, in the loading state the tubular member being disposed about the balloon and stent in the nominal diameter configuration, in the crimped state the tubular member retaining the balloon and the stent in the reduced profile configuration.

2. The catheter assembly of claim 1 wherein the tubular member comprises a longitudinal axis, the at least one stripe being substantially parallel to the longitudinal axis.

3. The catheter assembly of claim 1 wherein the tubular member Further comprises a longitudinal axis, the at least one stripe being helically disposed about the longitudinal axis of the tubular member.

4. The catheter assembly of claim 1 wherein the at least one stripe is Embedded in the first material.

5. The catheter assembly of claim 1 wherein the first material further comprises a plurality of scoring marks, when the tubular member is crimped from the loading state to the crimped state the scoring marks constructed and arranged to collapse upon themselves.

6. The catheter assembly of claim 5 wherein the plurality of scoring marks are characterized as a plurality of channels.

7. The catheter assembly of claim 5 wherein the plurality of scoring marks are characterized as a plurality of pores.

8. The catheter assembly of claim 1 wherein the second material comprises a braid of Nitinol and stainless steel.

9. The catheter assembly of claim 1 wherein the first material and the Second material are co-extruded.

10. The catheter assembly of claim 1 wherein the at least one stripe is a wire, the wire engaged to the first material.

11. The catheter assembly of claim 1 wherein the at least one stripe comprises a plurality of stripes.

12. The catheter assembly of claim 11 wherein the plurality of stripes are interconnected.