Composite stent with polymeric covering and bioactive coating
First Claim
1. A composite expandable device for delivery into a vessel carrying a blood comprising an expandable support frame having first and second end portions, a polymer sleeve extending over the support frame and having inner and outer surfaces, and a coating disposed on and attached to at least one of the inner and outer surfaces of the polymer sleeve for enhancing endothelial cell growth on the polymer sleeve.
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Accused Products
Abstract
A composite expandable stent for delivery into a vessel carrying blood comprising an expandable support frame having first and second end portions. A porous imprevious polymer sleeve having inner and outer surfaces extending over the support frame. A coating is disposed on at least one of the inner and outer surfaces of the polymer sleeve for enhancing endothelial cell growth on the device and polymer sleeve. The stent can be cylindrical or tapered.
53 Citations
22 Claims
- 1. A composite expandable device for delivery into a vessel carrying a blood comprising an expandable support frame having first and second end portions, a polymer sleeve extending over the support frame and having inner and outer surfaces, and a coating disposed on and attached to at least one of the inner and outer surfaces of the polymer sleeve for enhancing endothelial cell growth on the polymer sleeve.
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19. A delivery apparatus for an expandable device having a length and an inner diameter comprising a shaft, a balloon mounted on the shaft, said shaft having a lumen therein for inflating and deflating the balloon, said balloon being formed with proximal, distal and intermediate portions, said intermediate portion having a length to receive the expandable device, and radiopaque markers carried within the proximal and distal portions of the balloon and sized so that they have a diameter greater than the inner diameter of the expandable device when it is mounted on the intermediate portion of the balloon for securing the expandable device to the intermediate portion to prevent the expandable device from being dislodged during deployment by the delivery apparatus, the proximal and distal portions of the balloon being sized so that they have a size which is greater than the size of the expandable device when placed on the intermediate portion to inhibit inadvertent dislodgment of the expandable device during deployment of the expandable device with the apparatus.
- 20. A method for deploying a plurality of composite expandable devices comprising an expandable frame having opposite ends at proximal and distal extremities, a polymeric sleeve extending over the frame, with the use of a balloon delivery catheter having an inflatable balloon on the distal extremity thereof comprising the steps of mounting a first composite expandable device on the balloon, utilizing the balloon delivery catheter to deliver the device to the desired site in the vessel, inflating the balloon to expand the device in the vessel, deflating the balloon and removing the balloon from the vessel, utilizing a balloon delivery catheter to deliver a second composite expandable device to the site and docking the distal extremity of the additional composite expandable device in the proximal extremity of the first composite device already in place by causing the extremities to intermesh with each other, expanding the balloon to expand the second composite expandable device to expand the distal extremity within the proximal extremity of the composite expandable device already in place to complete the docking and deflating the balloon and removing the balloon delivery catheter from the vessel.
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22. A device for delivery into a vessel carrying a blood comprising a polymer sleeve having inner and outer surfaces, and a coating disposed on and attached to at least one of the inner and outer surfaces of the polymer sleeve for enhancing endothelial cell growth on the polymer sleeve.
Specification