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US 2006/0135982 A1Published application
Balloon catheter having improved balloon seal
AssigneeAdvanced Cardiovascular Systems, Inc.
InventorJohn Simpson
Life of this patent
Estimating the term…
Abstract
The end cap is preferably formed of a relatively high durometer material with an inner surface on an outer surface of the shaft and on an outer surface of the balloon skirt section, and contacts a compression member on the balloon outer surface. The configuration prevents or inhibits failure at the balloon seals which otherwise results from the compression member moving or the balloon pulling off the shaft and out from under the compression member during inflation of the balloon. As a result, the balloon catheter of the invention has an improved consistent burst pressure and/or failure mode.
Claims22
A balloon catheter, comprising:
- a) an elongated shaft having an inflation lumen and a guidewire lumen;
- b) a balloon on a distal shaft section, having a proximal and distal skirt section with at least a portion secured to the shaft so that an interior chamber of the balloon is in fluid communication with the inflation lumen;
- c) a proximal compression member on an outer surface of the balloon proximal skirt section, having a proximal end located distal to a proximal end of the balloon proximal skirt section, so that the proximal skirt section has a segment extending proximally beyond the proximal compression member;
- and
- d) a proximal end cap encircling the proximal end of the balloon proximal skirt section, the end cap having an inner surface on an outer surface of the shaft and on an outer surface of the extending segment of the balloon proximal skirt section.
2 more elements
A balloon catheter, comprising:
- a) an elongated shaft having an inflation lumen and a guidewire lumen;
- b) a balloon on a distal shaft section, having a proximal and distal skirt section with at least a portion secured to the shaft so that an interior chamber of the balloon is in fluid communication with the inflation lumen, and having an outer layer of ePTFE material and an inner layer of elastomeric material bonded to the outer layer;
- c) a proximal metallic band on an outer surface of the balloon proximal skirt section, having a proximal end located distal to a proximal end of the balloon proximal skirt section so that the proximal skirt section has a segment extending proximally beyond the proximal metallic band, and a proximal end cap encircling the proximal end of the balloon proximal skirt section with a distal end which abuts and which is flush with a proximal end of the proximal metallic band, the proximal end cap having an inner surface on an outer surface of the shaft and on an outer surface of the extending segment of the balloon proximal skirt section;
- and
- d) a distal metallic band on an outer surface of the balloon distal skirt section, having a distal end located proximal to a distal end of the balloon distal skirt section, so that the distal skirt section has a segment extending distally beyond the distal metallic band, and a distal end cap encircling the distal end of the balloon distal skirt section with a proximal end which abuts and which is flush with a distal end of the distal metallic band, the distal end cap having an inner surface on an outer surface of the shaft and on an outer surface of the extending segment of the balloon distal skirt section.
2 more elements
A balloon catheter, comprising:
- a) an elongated shaft having an inflation lumen and a guidewire lumen;
- b) a balloon on a distal shaft section, having a proximal and distal skirt section with at least a portion secured to the shaft so that an interior chamber of the balloon is in fluid communication with the inflation lumen;
- c) a compression member on an outer surface of at least one of the balloon skirt sections, so that the skirt section has a segment extending beyond the compression member;
- and
- d) an end cap having an inner surface on an outer surface of the shaft and on an outer surface of the extending segment of the balloon skirt section, the end cap abutting an end of the compression member.
2 more elements
A method of making a balloon catheter, comprising:
- a) bonding a proximal skirt section and a distal skirt section of a balloon to a catheter shaft so that the balloon has an interior in fluid communication with an inflation lumen of the shaft;
- b) radially collapsing a proximal compression member on an outer surface of the proximal skirt section of the balloon bonded to the shaft, with the compression member proximal end being located distal to a proximal end of the balloon proximal skirt section so that the proximal skirt section has a segment extending proximally beyond the proximal compression member;
- c) dispensing a liquid adhesive on the proximal end of the proximal skirt section of the balloon and curing the adhesive to form a proximal end cap encircling the proximal end of the balloon proximal skirt section, the proximal end cap having an inner surface on an outer surface of the shaft and on an outer surface of the extending segment of the balloon proximal skirt section.
Dependencies are inferred from the claim text.