WIRE COLLECTION DEVICE FOR STENT DELIVERY SYSTEM
First Claim
1. A wire collection device for a stent delivery system, the wire collection device comprising:
- a plurality of nested wire collection drums comprising a first drum concentric in at least one second drum, the at least one second drum comprising an inner diameter larger than an outer diameter of the first drum;
a retraction wire attached to the first drum and extending through a slot of the at least one second drum;
a thumbwheel coupled to the first drum and rotatable to actuate rotation of the first drum to collect the retraction wire around the outer diameter of the first drum, the retraction wire connected to a proximal end of an outer sheath of the stent delivery system; and
a catching mechanism rotatable about the first drum so as to engage a catch portion of the at least one second drum to actuate rotation of the at least one second drum to collect the retraction wire around an outer diameter of the at least one second drum, thereby increasing a collection diameter of the retraction wire to provide a mechanical advantage for sheath retraction.
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Accused Products
Abstract
A wire collection device for a stent delivery system includes a plurality of nested wire collection drums with a first drum concentric in a second drum. A thumbwheel coupled to the first drum can rotate to actuate rotation of the first drum to collect the retraction wire around the diameter of the first drum. A catching mechanism can rotate about the first drum to engage a catch portion of the second drum and actuate rotation of the second drum to collect the retraction wire around the outer diameter of the second drum. This increases the collection diameter of the retraction wire to provide a mechanical advantage for sheath retraction.
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Citations
20 Claims
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1. A wire collection device for a stent delivery system, the wire collection device comprising:
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a plurality of nested wire collection drums comprising a first drum concentric in at least one second drum, the at least one second drum comprising an inner diameter larger than an outer diameter of the first drum; a retraction wire attached to the first drum and extending through a slot of the at least one second drum; a thumbwheel coupled to the first drum and rotatable to actuate rotation of the first drum to collect the retraction wire around the outer diameter of the first drum, the retraction wire connected to a proximal end of an outer sheath of the stent delivery system; and a catching mechanism rotatable about the first drum so as to engage a catch portion of the at least one second drum to actuate rotation of the at least one second drum to collect the retraction wire around an outer diameter of the at least one second drum, thereby increasing a collection diameter of the retraction wire to provide a mechanical advantage for sheath retraction. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for collecting a retraction wire in a stent delivery system, the method comprising:
rotating a thumbwheel coupled to a plurality of nested wire collection drums comprising a first drum concentric in at least a second drum, the at least one second drum comprising; an inner diameter larger than a diameter of the inner drum; and a slot configured to allow a retraction wire to pass through the at least one second drum to the first drum;
wherein rotating the thumbwheel actuates;rotation of the inner drum to collect the retraction wire around the diameter of the first drum, wherein the retraction wire is coupled to a proximal end of an outer sheath of the stent delivery system, and collecting the retraction wire retracts the outer sheath to deploy a self-expanding stent; and rotation of a catching mechanism about the first drum until the catching mechanism engages a catch portion of the at least one second drum, wherein engaging the catch portion of the at least one second drum actuates rotation of the at least one second drum to collect the retraction wire around an outer diameter of the at least one second drum thereby increasing a collection diameter of the retraction wire to provide a mechanical advantage. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A wire collection device for a handle of a stent delivery system, the wire collection device comprising:
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a plurality of concentrically nested wire collection drums comprising an inner drum concentric in a first outer drum and at least one second outer drum, the first outer drum comprising an inner diameter larger than an outer diameter of the inner drum and the at least one second outer drum comprising an inner diameter larger than an outer diameter of the first outer drum; a retraction wire attached to the inner drum and extending through a slot of the at least one second outer drum and a slot of the first outer drum to the inner drum; a thumbwheel coupled to the inner drum and rotatable to actuate rotation of the inner drum to collect the retraction wire around the outer diameter of the inner drum, a distal end of the retraction wire connected to a proximal end of an outer sheath of the stent delivery system; and a first catching mechanism rotatable about the inner drum so as to engage a catch portion of the first outer drum to actuate rotation of the first outer drum until the first outer drum engages the retraction wire causing the retraction wire to collect around the outer diameter of the first outer drum, thereby increasing a collection diameter of the retraction wire to vary a mechanical advantage; a second catching mechanism rotatable about the first outer drum so as to engage a catch portion of the at least one second outer drum to actuate rotation of the at least one second outer drum until the at least one second outer drum engages the retraction wire causing the retraction wire to collect around an outer diameter of the second collection drum, thereby further increasing the collection diameter of the retraction wire to further vary the mechanical advantage. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification