Clip sheath for a polymer scaffold
AssigneeAbbott Cardiovascular Systems Inc.
InventorsStan Lam, Erika Danielle Anderson-Bolden
Life of this patent
Estimating the term…
Abstract
A sheath is placed over a crimped scaffold to reduce recoil of the crimped polymer scaffold and maintain scaffold-balloon engagement relied on to hold the scaffold to the balloon when the scaffold is being delivered to a target in a body. The sheath has an opening spanning the length of the sheath. The opening spans an arc length of about 90 degrees with respect to the circumference of the scaffold or balloon. The sheath may be removed from the scaffold by pinching the sheath between a thumb and forefinger, or bending or peeling back the sheath from the edges of the opening using fingertips.
Claims20
An apparatus, comprising:
- a catheter including a scaffold comprising a polymer, the scaffold being crimped to a balloon;
- and
- a constraining sheath disposed over the scaffold, the sheath comprising two edges defining an opening, the edges being circumferentially spaced from each other by between 5 Degrees and 150 Degrees;
- wherein the catheter is capable of being introduced into a body only after the sheath is removed from the scaffold.
A method of making a medical device, comprising the steps of:
- crimping the medical device to a balloon;
- and
- placing a constraining sheath over the crimped medical device, the constraining sheath comprising two edges defining an opening, when placed over the crimped medical device the edges are circumferentially spaced from each other by between 5 Degrees and 150 Degrees;
- wherein the medical device is capable of being implanted within a body only after the constraining sheath has been removed from the medical device.
A tubular medical device, comprising:
- a sheath disposed over the medical device, wherein the medical device is configured for being radially expanded;
- the sheath circumscribing at most between about 70% to 98% of the medical device;
- wherein the medical device is capable of being introduced into a body only after the sheath is removed from the medical device.
A method for removing a sheath from a crimped scaffold, comprising:
- applying pressure to opposite sides of the sheath;
- and
- pinching together, or peeling away edges of the sheath from the scaffold to remove the sheath from the scaffold.
Dependencies are inferred from the claim text.