Stent delivery systems and methods
First Claim
1. A delivery system for deploying an implantable device within a lumen internal to a body of a patient, the delivery system comprising:
- an inner member having a proximal end coupled to a handle of the delivery system and extending toward a distal end of the delivery system to couple to the implantable device;
an outer sheath having a proximal end and a distal end, the outer sheath surrounding a distal portion of the inner member and configured to retain the implantable device sheathed near the distal end of the outer sheath until deployment, wherein the outer sheath is slidably moveable relative to the inner member such that proximal movement of the outer sheath relative to the inner member deploys the implantable device;
a trigger assembly coupled to the outer sheath comprising;
an internal connector coupled to the outer sheath and including a floater engagement surface;
a distal trigger configured to engage the internal connector to retract the internal connector as the distal trigger is retracted proximally;
a floater having a distal end and a proximal end, the distal end configured to engage a floater engagement surface of the internal connector to retract the internal connector as the floater is retracted proximally; and
a proximal trigger configured to engage the floater to retract the floater as the proximal trigger is retracted proximally,wherein the distal trigger and the proximal trigger are configured to be serially retracted to provide staged release of the implantable device such that retracting the proximal trigger moves the distal trigger and the outer sheath proximally and longitudinally relative to the inner member from a first position to a second position to partially deploy the implantable device, and wherein subsequent retraction of the distal trigger moves the outer sheath proximally and longitudinally relative to the inner member from the second position to a third position to fully deploy the implantable device.
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Accused Products
Abstract
Apparatus, systems, and methods are provided for deploying an implantable device, such as a stent, within a lumen of a body of a patient. The delivery device may include an inner member and an outer sheath surrounding a distal portion of the inner member and configured to retain the implantable device sheathed near the distal end of the outer sheath until deployment. The outer sheath is slidably moveable relative to the inner member such that proximal movement of the outer sheath relative to the inner member deploys the implantable device. A trigger assembly of the delivery device can include an internal connector coupled to the outer sheath, a plurality of triggers, and a floater coupling two of the triggers. The triggers are serially retracted to deploy the stent. A panchor secures the stent against proximal and distal movement relative to the inner member during deployment.
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Citations
27 Claims
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1. A delivery system for deploying an implantable device within a lumen internal to a body of a patient, the delivery system comprising:
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an inner member having a proximal end coupled to a handle of the delivery system and extending toward a distal end of the delivery system to couple to the implantable device; an outer sheath having a proximal end and a distal end, the outer sheath surrounding a distal portion of the inner member and configured to retain the implantable device sheathed near the distal end of the outer sheath until deployment, wherein the outer sheath is slidably moveable relative to the inner member such that proximal movement of the outer sheath relative to the inner member deploys the implantable device; a trigger assembly coupled to the outer sheath comprising; an internal connector coupled to the outer sheath and including a floater engagement surface; a distal trigger configured to engage the internal connector to retract the internal connector as the distal trigger is retracted proximally; a floater having a distal end and a proximal end, the distal end configured to engage a floater engagement surface of the internal connector to retract the internal connector as the floater is retracted proximally; and a proximal trigger configured to engage the floater to retract the floater as the proximal trigger is retracted proximally, wherein the distal trigger and the proximal trigger are configured to be serially retracted to provide staged release of the implantable device such that retracting the proximal trigger moves the distal trigger and the outer sheath proximally and longitudinally relative to the inner member from a first position to a second position to partially deploy the implantable device, and wherein subsequent retraction of the distal trigger moves the outer sheath proximally and longitudinally relative to the inner member from the second position to a third position to fully deploy the implantable device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A method of deploying a stent within a target lumen of a body of a patient, the method comprising:
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obtaining a stent delivery system comprising a stent and a stent delivery device with the stent fully sheathed in a sheathed configuration within a distal portion of an outer sheath of the stent delivery system, the delivery system including a panchor disposed adjacent the distal end of the stent delivery system, wherein the panchor is a combination pusher and anchor configured to couple to a proximal portion of the stent to limit proximal and distal movement of the stent along with the outer sheath during deployment; positioning a distal portion of the outer sheath, including the sheathed stent, within the target lumen; retracting a proximal trigger to partially deploy the stent within the target lumen, wherein the proximal trigger is coupled to a floater to retract the floater as the proximal trigger is retracted proximally, the floater configured to engage a floater engagement surface of an internal connector to retract the internal connector as the floater is retracted proximally, the internal connector coupled to the outer sheath to retract the outer sheath as the internal connector is retracted proximally, the internal connector coupled to a distal trigger such that movement of the proximal trigger results in proximal movement of each of the distal trigger and the outer sheath relative to the stent to unsheathe a portion of the stent; retracting the distal trigger to further retract the internal connector to further retract the outer sheath to fully deploy the stent within the target lumen, wherein proximal movement of the distal trigger results in proximal movement of the outer sheath relative to the inner member; and withdrawing the distal portion of the outer sheath from the target lumen.
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27. A delivery system for deploying an implantable device within a lumen internal to a body of a patient, the delivery system comprising:
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an inner member having a proximal end coupled to a handle of the delivery system and extending toward a distal end of the delivery system to couple to the implantable device; an outer sheath having a proximal end and a distal end, the outer sheath surrounding a distal portion of the inner member and configured to retain the implantable device sheathed near the distal end of the outer sheath until deployment, wherein the outer sheath is slidably moveable relative to the inner member such that proximal movement of the outer sheath relative to the inner member deploys the implantable device; an internal connector having a tubular shape configured to surround a portion of the inner member and having a distal end and a proximal end and a floater engagement surface near the proximal end, the distal end coupled to the proximal end of the outer sheath, wherein the internal connector is slidably moveable relative to the inner member and movement of the internal connector relative to the inner member results in movement of the outer sheath relative to the inner member; a distal trigger configured to engage a proximal end of the internal connector as the distal trigger is retracted proximally toward the handle of the delivery system, wherein proximal movement of the trigger results in proximal movement of the internal connector and the outer sheath relative to the inner member; a floater having a tubular shape configured to surround a portion of the inner member and having a distal and a proximal end, the distal end configured to engage the floater engagement surface of the internal connector to retract the internal connector as the floater is retracted proximally, wherein the floater is slidably moveable relative to the inner member and proximal movement of the floater relative to the inner member results in proximal movement of the floater, the distal trigger, and the outer sheath relative to the inner member; and a proximal trigger configured to engage a proximal end of the floater as the proximal trigger is retracted proximally toward the handle of the delivery system, wherein proximal movement of the proximal trigger results in proximal movement of each of the floater, the distal trigger, the internal connector, and the outer sheath relative to the inner member, wherein the distal trigger and the proximal trigger are configured to be serially retracted to provide staged release of the implantable device such that retracting the proximal trigger moves the distal trigger and the outer sheath proximally and longitudinally relative to the inner member from a first position to a second position to partially deploy the implantable device, and wherein subsequent retraction of the distal trigger moves the outer sheath proximally and longitudinally relative to the inner member from the second position to a third position to fully deploy the implantable device.
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Specification