Mechanism to improve stent securement
First Claim
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2. The device of claim 1, further comprising a plurality of flexible connecting members.
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Abstract
The present invention comprises a securement member to improve securement of a stent upon an expandable balloon and delivery catheter, and to constrain portions of the stent before and during stent deployment. Generally, the securement member comprises a securement connector arranged to engage a catheter, at least one flexible connecting member coupled to the securement connector, and a locking member arranged to engage a portion of a stent.
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Citations
17 Claims
- 2. The device of claim 1, further comprising a plurality of flexible connecting members.
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10. A stent delivery system comprising:
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a catheter;
an expandable balloon;
a radially expandable stent having at least one engagable portion;
at least one radially expandable constrainment member having a first end coupled to said catheter and a second end having at least one engaging portion;
wherein said constrainment member engaging portion and said stent engagable portion are engaged;
and wherein said constrainment member engaging portion and said stent engagable portion may remain engaged throughout the expansion of said balloon. - View Dependent Claims (1, 5, 6, 7, 8, 9, 11, 12, 13, 14)
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14-1. The stent delivery system of claim 10 wherein said constrainment member engaging portion and said stent engagable portion are in the form of a ball and socket.
- 15. The stent delivery system of claim 10 wherein the constrainment is in the form of serpentine shaped band.
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15-2. A stent delivery system comprising:
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a catheter;
an expandable balloon;
a radially expandable stent arranged about said expandable balloon in an unexpanded state, said stent having an end portion, said end portion having at least one engagable portion;
at least one radially expandable constrainment member arranged to partially overlay said balloon, said constrainment member having a first end coupled to said catheter and comprising a circumferential band having a plurality of openings therethrough and an engaging portion;
wherein said constrainment member engaging portion is arranged to engage said stent engagable portion;
and wherein when said constrainment member engaging portion and said stent engagable portion are engaged, movement of said stent engagable portion in the axial direction is prevented.
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Specification