Push-pull wire anchor
First Claim
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1. A deflectable catheter comprising:
- a catheter body including a deflectable distal end portion;
a flexible element including a flexible element distal portion extending along at least a portion of the deflectable distal end portion;
at least one skirt extending at least part way around the flexible element distal portion and secured to the flexible element distal portion at a deformed portion of the skirt, the at least one skirt including a flared projection at one or both of a skirt proximal end or a skirt distal end; and
the flexible distal end portion is at least partially received within the flared projection;
an encapsulant coupled between the at least one skirt and the deflectable distal end portion, wherein the encapsulant is adapted to transmit pushing and pulling forces from the at least one skirt to the deflectable distal end portion, the encapsulant is received within the flared projection, and the encapsulant forms at least a portion of an outer surface of the deflectable distal end portion; and
wherein the tension strength and compression strength of the flexible element and the at least one skirt are at least as strong as the encapsulant tension strength and compression strength.
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Abstract
A deflectable catheter includes a flexible element includes a flexible element, and at least one skirt extending at least part way around the flexible element. An encapsulant is coupled between the skirt and a deflectable distal end portion of the deflectable catheter. The encapsulant is adapted to transmit pushing and pulling forces from the skirt to the deflectable distal end portion.
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Citations
28 Claims
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1. A deflectable catheter comprising:
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a catheter body including a deflectable distal end portion; a flexible element including a flexible element distal portion extending along at least a portion of the deflectable distal end portion; at least one skirt extending at least part way around the flexible element distal portion and secured to the flexible element distal portion at a deformed portion of the skirt, the at least one skirt including a flared projection at one or both of a skirt proximal end or a skirt distal end; and
the flexible distal end portion is at least partially received within the flared projection;an encapsulant coupled between the at least one skirt and the deflectable distal end portion, wherein the encapsulant is adapted to transmit pushing and pulling forces from the at least one skirt to the deflectable distal end portion, the encapsulant is received within the flared projection, and the encapsulant forms at least a portion of an outer surface of the deflectable distal end portion; and wherein the tension strength and compression strength of the flexible element and the at least one skirt are at least as strong as the encapsulant tension strength and compression strength. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A deflectable catheter assembly comprising:
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a catheter body extending from a proximal end to a deflectable distal end portion, wherein the catheter body includes a sidewall surrounding a catheter lumen, and an actuator lumen within the side wall extends from the proximal end to an intermediate portion proximal to the deflectable distal end portion; a flexible element extending through the actuator lumen, wherein a flexible element distal portion extends from the intermediate portion along at least a portion of the deflectable distal end portion; at least one skirt secured to the flexible element distal portion and within the sidewall, wherein the at least one skirt extends at least part way around the flexible element distal portion, the skirt includes a proximal projection with a proximal tapered portion tapering toward a skirt distal end, and the skirt includes a distal projection with a distal tapered portion tapering toward a skirt proximal end; an encapsulant coupled between the at least one skirt and the deflectable distal end portion, wherein the encapsulant is adapted to transmit tension and compression from the at least one skirt to the deflectable distal end portion, and the encapsulant forms at least a portion of the side wall of the deflectable distal end portion; and wherein the catheter body is adapted to fail before failure of the flexible element and the skirt. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A deflectable catheter assembly comprising:
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a catheter body extending from a catheter proximal end to a catheter deflectable distal end portion, the catheter body including; a catheter side wall, the catheter sidewall including an encapsulant forming a smooth catheter outer surface around the catheter deflectable distal end portion, a catheter delivery lumen surrounded by the encapsulant, and a flexible element duct disposed within the catheter sidewall, the flexible element duct extends from near the catheter proximal end toward the catheter deflectable distal end portion; a flexible element extending through the flexible element duct toward the catheter deflectable distal end portion, the flexible element is slidably disposed within the flexible element duct; and at least one anchor fixedly engaged along the flexible element near the catheter deflectable distal end portion, the at least one anchor includes a deformed inner surface engaged against the flexible element, the at least one anchor including an exposed portion distinct from the deformed inner surface, the exposed portion including; a deformed outer surface at an intermediate portion of the at least one anchor, and the deformed outer surface is secured on the flexible element, a flared projection extending radially away from the flexible element, the flared projection is at one of an anchor proximal end or an anchor distal end, and a tapered portion of the flared projection of the anchor tapers toward the intermediate portion of the anchor, wherein the at least one anchor is fully surrounded by the encapsulant around the deformed outer surface and the flared projection, and the encapsulant fills a space between the flared projection and the flexible element, and pushing and pulling forces are transmitted entirely through the encapsulant to the catheter deflectable distal end portion. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28)
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Specification