Crimpable balloon/stent protector

• US 6,783,542 B2
• Filed: 02/22/2001
• Issued: 08/31/2004
• Est. Priority Date: 02/22/2001
• Status: Expired due to Fees

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Scimed Life Systems Incorporated (Boston Scientific Corporation)
• Inventors: Eidenschink, Tracee E. J.
• Primary Examiner(s): Snow, Bruce E
• Application Number:
  US09/790,967
• Publication Number:
  US 20020116045A1
• Time in Patent Office: 1,286 Days
• Field of Search: 623/1.11, 623/1.12, 623/1.23, 606/108, 606/195, 606/1, 295/16
• 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 having a protected configuration and a delivery configuration, the catheter comprising:

a balloon, the balloon having a length;

a stent, the stent being disposed about at least a portion of the balloon; and

a protective sleeve, in the protected configuration the protective sleeve being disposed about the entire length of the stent and balloon, in the delivery configuration the protective sleeve being removed from the balloon, the protective sleeve comprising;

a tubular member having a longitudinal axis composed of a first material, wherein the first material has 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 second predetermined modulus of elasticity, the second predetermined modulus of elasticity being greater than the first predetermined modulus of elasticity, the at least one stripe being substantially parallel to the longitudinal axis of the tubular member,

in the protected configuration 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, in the crimped state the tubular member having a second diameter, the second diameter being less than the first diameter, in the crimped state the tubular member retaining the balloon in a reduced profile configuration,

in the delivery configuration the tubular member being removed from the balloon while in the crimped state prior to insertion of the catheter assembly into a body lumen.

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

3. 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 lading state to the crimped state the scoring marks constructed and arranged to collapse upon themselves.

4. The catheter assembly of claim 3 wherein the plurality of scoring marks are characterized as a plurality of channels.

5. The catheter assembly of claim 4 wherein the tubular member further comprises an inside surface and an outside surface.

6. The catheter assembly of claim 3 wherein the plurality of scoring marks are characterized as a plurality of pores.

7. The catheter assembly of claim 1 wherein the first material is constructed from at least one member of the group consisting of styrenic block copolymers, polyurethanes, silicone rubber, natural rubber, copolyesters, polyamides, EPDM rubber/polyolefin, nitril rubber/PVC, fluoroelastomers, butyl rubber, epichlorohydrin, polyethylene, high density polyethylene and any combinations thereof.

8. The catheter assembly of claim 1 wherein the second material is at least partially compose of at least one member of the group consisting of:

liquid crystal polymers, polyester, copolyester, polyester blends, PEEK, PPS, fluoropolymers, polyether block amides, polyolefins, polystyrene, polyvinyl chloride, acrylonitrile-butadiene-styrene polymers, polyacrylonitrile, polyacrylate, vinyl acetate polymer, cellulose plastics, polyurethanes, polyethylene terephthalate, polyacetal, polyethers, polycarbonates, polyamides, polyphenylene sulfide, polyarylethersulfones, polyaryletherketones, polytetrafluoroethylene, polyethyleneterephthalate, nylon, metal, carbon, glass, fabric and any combinations thereof.

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

10. The catheter assembly of claim 8 wherein the first material and the second material are co-extruded.

11. The catheter assembly of claim 8 wherein the at least on stripe is a wire, the wire engaged to the first material.

12. The catheter assembly of claim 8 wherein the at least stripe comprises a plurality of stripes.

13. The catheter assembly of claim 12 wherein the plurality of stripes are distributed uniformly about the tubular member.

14. The protective sleeve of claim 12 wherein the plurality of stripes are randomly dispersed about the tubular member.

15. The catheter assembly of claim 1 wherein the tubular member further comprises an inside surface and an outside surface, at least one of the inside and outside surfaces having a lubricious coating thereon.