Balloon protector

• US 6,613,067 B1
• Filed: 06/06/2000
• Issued: 09/02/2003
• Est. Priority Date: 06/06/2000
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Scimed Life Systems Incorporated (Boston Scientific Corporation)
• Inventors: Johnson, Michael W.
• Primary Examiner(s): Denion, Thomas
• Assistant Examiner(s): Trieu, Thai-Ba
• Application Number:
  US09/587,769
• Time in Patent Office: 1,183 Days
• Field of Search: 604/96.01, 604/264, 604/265, 604/500, 604/507, 604/508, 604/509, 604/95-96, 604/164, 604/103.11, 604/103.14, 606/191, 606/108, 606/192, 606/194, 606/195, 623/1.1, 623/1.11, 623/1.12
• US Class Current: 606/194
• 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 2/958 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
• CPC Class Codes: A61M 25/104 used for angioplasty

Abstract

A method and apparatus for protecting a balloon of a balloon catheter from damage prior to inserting the balloon catheter into a body lumen. The balloon protector comprising a tube of synthetic material having a reduced inside diameter which is drawn about the catheter balloon. The balloon protector retaining the catheter in a reduced configuration. The material of the balloon protector including a kinked portion which provides the protector with an area that will draw inward toward and against the catheter when the ends of the protector are drawn longitudinally in opposite directions.

Claims

1. A balloon protector comprising a tube of synthetic material, the tube having an unreduced state and a reduced state, the tube having an inside diameter and an outside diameter, the inside diameter having a catheter inserted therein, the catheter including an inflatable portion, at least the outside diameter of the tube having a kinked portion, the tube further having a proximal end and a distal end, in the reduced state at least a portion of the inside diameter of the tube which corresponds to the kinked portion of the tube being drawn inwardly down and about at least the expandable portion of the catheter and retaining the catheter in a reduced configuration, the tube constructed and arranged to be placed in the reduced state by pulling at least one end of the tube longitudinally in a direction away from at least the expandable portion of the catheter.

2. The balloon protector of claim 1 further comprising a lubricant, the lubricant applied to the inside diameter of the tube.

3. The balloon protector of claim 1 further comprising a lubricant, the lubricant applied to the catheter.

4. The balloon protector of claim 1 further comprising a lubricant, the lubricant applied to the inside diameter of the tube and the catheter.

5. The balloon protector of claim 4 wherein the lubricant is a slip coat.

6. The balloon protector of claim 1 wherein the catheter further comprises one or more implantable devices.

7. The balloon protector of claim 6 wherein the one or more implantable devices is a stent.

8. The balloon protector of claim 1 wherein the tube has a thickness of 0.001 to 0.05 inches.

9. The balloon protector of claim 1 wherein the portion of the tube being drawn down and about at least the expandable portion of the catheter is drawn down 5 to 60 percent relative to the portion of the tube which is not drawn down.

10. The balloon protector of claim 1 wherein the tube is constructed from one or more polyether-polyester block copolymers.

11. The balloon protector of claim 1 wherein the tube is constructed from Arnitel EM-740.

12. A method for protecting a balloon catheter comprising the steps of:

providing a tube constructed from one or more polyether-polyester block copolymers, the tube having an inside diameter and an outside diameter, the tube having a proximal end and a distal end;

kinking a predetermined area of the tube;

inserting a catheter within the inside diameter of the tube, the catheter having a proximal catheter end and a distal catheter end, the catheter further having at least one inflatable portion at the distal catheter end;

drawing the predetermined area of the tube inward toward and against the catheter by pulling at least one end of the tube longitudinally in a direction away from the inflatable portion of the catheter, at a predetermined rate, for a predetermined length of time.

13. The method for protecting a balloon catheter of claim 12 further comprising the step of:

trimming the distal end of the tube which exceeds the distal catheter end, and

sealing the distal end of the tube.