Striped sheaths for medical devices
First Claim
Patent Images
1. An apparatus, comprising:
- a catheter having distal and proximal ends;
a scaffold crimped to a balloon at the catheter distal end; and
a two piece sheath assembly, including a protecting sheath disposed over the scaffold, and a constraining sheath disposed over the protecting sheath, the constraining sheath comprising at least one strip, a first portion not disposed over the scaffold, and a second portion disposed over the scaffold, wherein a length of the second portion is greater than a length of the scaffold, and a length of the first portion is greater than the length of the second portion; and
wherein the crimped scaffold and balloon are configured for being placed within a body only after the two piece sheath assembly is pushed or pulled off the catheter distal end.
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Accused Products
Abstract
A sheath used to protect a medical device has one or more strips formed over a portion thereof. The medical device is a scaffold crimped to a balloon and mounted to a catheter. The sheath is two-piece, including a protecting and constraining sheath part. The strips facilitate removal of the constraining sheath from the scaffold in manner that reduces instances of damage caused by improper removal of the sheath from the medical device.
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Citations
19 Claims
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1. An apparatus, comprising:
- a catheter having distal and proximal ends;
a scaffold crimped to a balloon at the catheter distal end; and
a two piece sheath assembly, including a protecting sheath disposed over the scaffold, and a constraining sheath disposed over the protecting sheath, the constraining sheath comprising at least one strip, a first portion not disposed over the scaffold, and a second portion disposed over the scaffold, wherein a length of the second portion is greater than a length of the scaffold, and a length of the first portion is greater than the length of the second portion; and
wherein the crimped scaffold and balloon are configured for being placed within a body only after the two piece sheath assembly is pushed or pulled off the catheter distal end. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
- a catheter having distal and proximal ends;
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15. An apparatus, comprising:
- a catheter including a scaffold crimped to a balloon; and
a sheath assembly including a protecting sheath disposed over the scaffold, a constraining sheath disposed over the protecting sheath, a constraining sheath slot not disposed over the scaffold, and a protecting sheath slot disposed over the scaffold;
wherein the constraining sheath comprises a first portion not disposed over the scaffold and a second portion disposed over the scaffold, and wherein a length of the second portion is greater than a length of the scaffold; and
wherein a length of the first portion is greater than a length of the second portion. - View Dependent Claims (16, 17, 18)
- a catheter including a scaffold crimped to a balloon; and
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19. An apparatus, comprising:
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a catheter including a scaffold crimped to a balloon; and a sheath for the scaffold including a constraining sheath having a plurality of slots forming at least one strip not disposed over the scaffold, wherein the constraining sheath comprises; a first portion not disposed over the scaffold, a second portion disposed over the scaffold, a length of the second portion is greater than a length of the scaffold, and a length of the first portion is greater than a length of the second portion; wherein the at least one strip deflects outwardly when the constraining sheath is removed from the scaffold; wherein the scaffold undergoes plastic deformation when the balloon is inflated; and wherein the scaffold recoils from a crimped state by no more than 10% when the sheath assembly is removed from the crimped scaffold and before the balloon is inflated.
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Specification