Stent delivery device and method for stent delivery
First Claim
1. A device for releasing into the body from a delivery system a medical prosthesis mounted on the delivery system and held by a constraint in a constrained delivery disposition, the device comprising:
- a first hub for the delivery system;
a second hub for an elongate element to connect the device to the prosthesis constraint;
a track for the second hub to advance along, from a starting point corresponding to constraint of the prosthesis, to a finishing point corresponding to separation of the prosthesis and constraint;
ratchet means to advance the second hub progressively, from the starting point to the finishing point, in a plurality of actuation strokes; and
a full stroke actuator disposed distal to the ratchet means, to advance the second hub all the way from an intermediate point on the track to the finishing point in one single stroke of the actuator, the intermediate point being selectable by the user within a portion of the track which extends over at least half the length of the track.
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Accused Products
Abstract
The present invention relates to a method and device for releasing into the body from a delivery system a medical prosthesis mounted on the delivery system and held by a constraint in a constrained delivery disposition. The device comprises a first hub for the delivery system, a second hub for an elongate element to connect the device to the prosthesis constraint, a track for the second hub to advance along, from a starting point corresponding to constraint of the prosthesis, to a finishing point corresponding to separation of the prosthesis and constraint, ratchet means to advance the second hub progressively, from the starting point to the finishing point, in a plurality of actuation strokes, and a full stroke actuator to advance the second hub all the way from an intermediate point on the track to a finishing point in one single stroke of the actuator, the intermediate point being selectable by the user within a portion of the track which extends over at least half the length of the track.
100 Citations
27 Claims
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1. A device for releasing into the body from a delivery system a medical prosthesis mounted on the delivery system and held by a constraint in a constrained delivery disposition, the device comprising:
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a first hub for the delivery system; a second hub for an elongate element to connect the device to the prosthesis constraint; a track for the second hub to advance along, from a starting point corresponding to constraint of the prosthesis, to a finishing point corresponding to separation of the prosthesis and constraint; ratchet means to advance the second hub progressively, from the starting point to the finishing point, in a plurality of actuation strokes; and a full stroke actuator disposed distal to the ratchet means, to advance the second hub all the way from an intermediate point on the track to the finishing point in one single stroke of the actuator, the intermediate point being selectable by the user within a portion of the track which extends over at least half the length of the track. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A device for releasing into the body from a delivery catheter a medical prosthesis mounted on the delivery catheter and held by a constraint of the delivery catheter in a constrained delivery disposition, the device comprising:
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a first hub engageable with a component of the delivery catheter; a second hub engageable with an elongate element to connect the device to the prosthesis constraint; a track for the second hub to advance along, from a starting point corresponding to constraint of the prosthesis, to a finishing point corresponding to separation of the prosthesis and constraint; ratchet means operatively engageable with the elongate element to advance the second hub progressively, from a starting point to the finishing point, in a plurality of actuation strokes; a slidable full stroke actuator disposed distal to the ratchet means and associated with the second hub, to advance the second hub all the way from an intermediate point on the track to the finishing point in one single stroke of the actuator, the intermediate point being selectable by the user within a portion of the track which extends over at least half the length of the track. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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25. A medical device delivery system comprising:
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an inner shaft; a tubular outer sheath disposed about the shaft, the shaft and sheath being movable relative to each other; a medical prosthesis disposed within the outer sheath, the inner shaft being engageable with the prosthesis to maintain the position of the prosthesis while the outer shaft is moved in a direction to expose the prosthesis; a handle device connected to the inner shaft and outer sheath; the handle device comprising a first hub engageable with a component of the delivery catheter; a second hub engageable with an elongate element to connect the device to the prosthesis constraint; a track for the second hub to advance along, from a starting point corresponding to constraint of the prosthesis, to a finishing point corresponding to separation of the prosthesis and constraint; ratchet means operatively engageable with the elongate element to advance the second hub progressively, from a starting point to the finishing point, in a plurality of actuation strokes; a slidable full stroke actuator disposed distal to the ratchet means and associated with the second hub, to advance the second hub all the way from an intermediate point on the track to the finishing point in one single stroke of the actuator, the intermediate point being selectable by the user within a portion of the track which extends over at least half the length of the track. - View Dependent Claims (26, 27)
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Specification