Stent delivery system with pusher assembly
First Claim
1. A pusher assembly for a stent delivery device, the pusher assembly comprising:
- a distal end of an elongate inner member; and
a stent-engaging member having a proximal end and a distal end, the proximal end of the stent-engaging member being at least partially inside the distal end of the elongate inner member, the stent-engaging member comprising a portion that radially outwardly extends towards the distal end of the stent-engaging member, the stent-engaging member configured to move a stent when distally advanced and configured to not move a stent when proximally retracted, wherein the proximal end of the stent-engaging member comprises an aperture, wherein the elongate inner member comprises an inner layer, and wherein an inner surface of the inner layer of the elongate inner member at least partially fills the aperture such that a portion of the inner layer extends inward of an outer surface of the proximal end of the stent-engaging member;
wherein the stent-engaging member comprises a stem and a ratchet mechanically coupled to the stem by a plurality of spot welds on a first side of the ratchet, and the ratchet spaced from the stem by a pap on a second side of the ratchet opposite the first side of the ratchet.
1 Assignment
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Accused Products
Abstract
A pusher assembly for a stent delivery device includes a distal end of an elongate member and a stent-engaging member having proximal and distal ends. The proximal end of the stent-engaging member is mechanically coupled to the distal end of the inner member by a connector, or the proximal end of the stent-engaging member is at least partially inside the distal end of the elongate inner member. The stent-engaging member includes a portion that radially outwardly extends towards the distal end of the stent-engaging member, or the stent-engaging member includes a portion that radially outwardly extends towards the distal end of the stent-engaging member. The stent-engaging member is configured to move a stent when distally advanced and configured to not move a stent when proximally retracted. A stent delivery device includes an elongate outer member, an elongate inner member coaxially positioned within the outer member, and the pusher assembly.
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Citations
29 Claims
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1. A pusher assembly for a stent delivery device, the pusher assembly comprising:
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a distal end of an elongate inner member; and a stent-engaging member having a proximal end and a distal end, the proximal end of the stent-engaging member being at least partially inside the distal end of the elongate inner member, the stent-engaging member comprising a portion that radially outwardly extends towards the distal end of the stent-engaging member, the stent-engaging member configured to move a stent when distally advanced and configured to not move a stent when proximally retracted, wherein the proximal end of the stent-engaging member comprises an aperture, wherein the elongate inner member comprises an inner layer, and wherein an inner surface of the inner layer of the elongate inner member at least partially fills the aperture such that a portion of the inner layer extends inward of an outer surface of the proximal end of the stent-engaging member; wherein the stent-engaging member comprises a stem and a ratchet mechanically coupled to the stem by a plurality of spot welds on a first side of the ratchet, and the ratchet spaced from the stem by a pap on a second side of the ratchet opposite the first side of the ratchet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 26)
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11. A pusher assembly for a stent delivery device, the pusher assembly comprising:
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a distal end of an elongate inner member; and a stent-engaging member having a proximal end and a distal end, at least a portion of the stent-engaging member being radially inward of an inner layer of the elongate inner member, the stent-engaging member comprising a portion that radially outwardly extends towards the distal end of the stent-engaging member, the stent-engaging member configured to move a stent when distally advanced and configured to not move a stent when proximally retracted, wherein the elongate inner member at least partially defines a guidewire lumen, and wherein the stent-engaging member at least partially defines the guidewire lumen, the guidewire lumen having an open distal end through which a guidewire may be passed; wherein the stent-engaging member comprises a stem and a ratchet mechanically coupled to the stem by a plurality of spot welds on a first side of the ratchet, and the ratchet spaced from the stem by a pap on a second side of the ratchet opposite the first side of the ratchet. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 27)
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19. A pusher assembly for a stent delivery device, the pusher assembly comprising:
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a distal end of an elongate inner member; and a stent-engaging member having a proximal end and a distal end, the proximal end of the stent-engaging member being at least partially inside the distal end of the elongate inner member, the stent-engaging member comprising a portion that radially outwardly extends towards the distal end of the stent-engaging member, the stent-engaging member configured to move a stent when distally advanced and configured to not move a stent when proximally retracted, wherein the stent-engaging member comprises a stem and a ratchet, the stem radially inward of the ratchet, the ratchet mechanically coupled to the stem by a plurality of spaced spot welds on a first side of the ratchet, the ratchet spaced from the stem by a gap on a second side of the ratchet generally opposite the first side of the ratchet, the ratchet comprising the portion. - View Dependent Claims (20, 21, 22, 23, 24, 25, 28, 29)
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Specification