STENT DELIVERY SYSTEM
First Claim
1. A stent delivery system, comprising:
- a delivery member;
a frictional interfacing member disposed on a distal region of the delivery member, the frictional interfacing member comprising a plurality of perfusion channels;
a self-expanding stent disposed over the respective frictional interfacing member and delivery member in a radially contracted configuration; and
a sheath defining disposed over the respective self-expanding stent, frictional interfacing member, and delivery member,wherein the frictional interfacing member resists movement of the stent relative to the delivery member while the stent is in its radially contracted configuration, and wherein the perfusion channels permit fluid to flow from an interior region of the sheath proximal of the frictional interfacing member to an interior region of the sheath distal of the frictional interfacing member.
7 Assignments
0 Petitions
Accused Products
Abstract
A stent delivery system includes a delivery member, a frictional interfacing member disposed on a distal region of the delivery member, the frictional interfacing member comprising a plurality of perfusion channels, a self-expanding stent disposed over the respective frictional interfacing member and delivery member in a radially contracted configuration, and a sheath defining disposed over the respective self-expanding stent, frictional interfacing member, and delivery member, wherein the frictional interfacing member resists axial and/or rotational movement of the stent relative to the delivery member while the stent is in its radially contracted configuration, and wherein the perfusion channels permit fluid to flow from an interior region of the sheath proximal of the frictional interfacing member to an interior region of the sheath distal of the frictional interfacing member.
37 Citations
20 Claims
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1. A stent delivery system, comprising:
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a delivery member; a frictional interfacing member disposed on a distal region of the delivery member, the frictional interfacing member comprising a plurality of perfusion channels; a self-expanding stent disposed over the respective frictional interfacing member and delivery member in a radially contracted configuration; and a sheath defining disposed over the respective self-expanding stent, frictional interfacing member, and delivery member, wherein the frictional interfacing member resists movement of the stent relative to the delivery member while the stent is in its radially contracted configuration, and wherein the perfusion channels permit fluid to flow from an interior region of the sheath proximal of the frictional interfacing member to an interior region of the sheath distal of the frictional interfacing member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A stent delivery system, comprising:
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a delivery member; an annular frictional interfacing member having a high friction outer surface and a high friction inner surface adhered to the distal region of the delivery member; a self-expanding stent disposed over the respective frictional interfacing member and delivery member in a radially contracted configuration; and a sheath disposed over the respective self-expanding stent, frictional interfacing member, and delivery member, wherein the outer surface of the frictional interfacing member resists axial and rotational movement of the stent relative to the delivery member while the stent is in its radially contracted configuration, and wherein the frictional interfacing member comprises a plurality of fluid perfusion channels that allow fluid to flow from an interior region of the sheath lumen proximal of the frictional interfacing member to an interior region of the sheath distal of the frictional interfacing member. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method of delivering a stent to a target site in a blood vessel, comprising:
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(a) providing a stent delivery system including a delivery member, a frictional interfacing member disposed on a distal region of the delivery member, a self-expanding stent disposed over the respective frictional interfacing member and delivery member in a radially contracted configuration, and a sheath disposed over the respective self-expanding stent, frictional interfacing member, and delivery member; (b) introducing liquid into an open proximal end of the sheath, such that the fluid migrates through a plurality of perfusion channels formed in the frictional interfacing member to an interior region of the sheath distal of the frictional interfacing member; (c) advancing the distal region of sheath into a blood vessel until the stent is positioned proximate a deployment site in the vessel, wherein the frictional interfacing member inhibits rotation of the stent relative to the delivery member during said advancing; (d) withdrawing the sheath proximally relative to the delivery member to thereby unsheathe a distal portion of the stent, wherein the frictional interfacing member inhibits axial movement of the stent relative to the delivery member during said withdrawing, such that a proximal portion of the stent and the frictional interfacing member remain covered by the sheath; (e) determining a position of the unsheathed portion of the stent in the vessel; and (f) if the determined position of the unsheathed portion of the stent is not a desired deployment site in the vessel, advancing the sheath distally relative to the delivery member or withdrawing the delivery member proximally relative to the sheath to thereby re-sheath the distal portion of the stent. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification