Delivery device
First Claim
Patent Images
1. An apparatus for delivering an intraluminal device, comprising:
- a gear and pulley mechanism comprising a first gear set and a second gear set;
a drive pulley adapted to be alternatively mechanically coupled to the first gear set and the second gear set; and
a sheath disposed over an inner elongate member, the sheath being in mechanical communication with the drive pulley and adapted to retract in a proximal direction and resheath in a distal direction,wherein the drive pulley is configured to be mechanically coupled to the second gear set to move the sheath in a proximal direction relative to the inner elongate member to enable at least partial deployment of the intraluminal device,wherein the drive pulley is configured to be mechanically coupled to the first gear set to move the sheath in the distal direction relative to the inner elongate member to enable resheathing of a partially deployed intraluminal device, andfurther comprising a trigger, the trigger comprising a generally straight rack, the rack being translatable and adapted to engage with a main drive gear, the main drive gear being affixed to a drive shaft, wherein the first gear set comprises a first drive gear and the second gear set comprises a second drive gear, the first drive gear and the second drive gear each comprising one-directional roller clutch bearings, the drive shaft extending through the roller clutch bearings and mechanically coupled thereto, wherein the first drive gear engages a first idle gear, and the first idle gear engages a first pulley gear, wherein the second drive gear engages a second pulley gear, the first pulley gear and the second pulley gear being adapted to rotate in opposite directions in response to translation of the rack, the drive pulley being adapted to be alternatively mechanically coupled to the first pulley gear and the second pulley gear, andfurther wherein a pulley shaft extends through each of the first pulley gear, the second pulley gear, and the drive pulley, the first pulley gear and the second pulley gear each being translatable relative to the drive pulley along an axis of the pulley shaft, wherein a first directional switch is aligned with the axis of the pulley shaft and coupled to the first pulley gear, the first directional switch being adapted to simultaneously move the first pulley gear into engagement with the drive pulley and the second pulley gear out of engagement with the drive pulley, and wherein a second directional switch is aligned with the axis of the pulley shaft and coupled to the second pulley gear, the second directional switch being adapted to simultaneously move the second pulley gear into engagement with the drive pulley and the first pulley gear out of engagement with the drive pulley.
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Accused Products
Abstract
A delivery device for deploying an expandable prosthesis and method of use thereof are described. The delivery device comprises an outer catheter that is capable of retracting in a proximal direction and resheathing over the prosthesis in a distal direction. The device comprises a drive pulley that can engage a particular gear set to retract the outer catheter and expose the prosthesis. The drive pulley can also engage another gear set to resheath the outer catheter and recapture the prosthesis between the inner and the outer catheter. A directional switch enables the device to operate between the two modes.
155 Citations
24 Claims
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1. An apparatus for delivering an intraluminal device, comprising:
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a gear and pulley mechanism comprising a first gear set and a second gear set; a drive pulley adapted to be alternatively mechanically coupled to the first gear set and the second gear set; and a sheath disposed over an inner elongate member, the sheath being in mechanical communication with the drive pulley and adapted to retract in a proximal direction and resheath in a distal direction, wherein the drive pulley is configured to be mechanically coupled to the second gear set to move the sheath in a proximal direction relative to the inner elongate member to enable at least partial deployment of the intraluminal device, wherein the drive pulley is configured to be mechanically coupled to the first gear set to move the sheath in the distal direction relative to the inner elongate member to enable resheathing of a partially deployed intraluminal device, and further comprising a trigger, the trigger comprising a generally straight rack, the rack being translatable and adapted to engage with a main drive gear, the main drive gear being affixed to a drive shaft, wherein the first gear set comprises a first drive gear and the second gear set comprises a second drive gear, the first drive gear and the second drive gear each comprising one-directional roller clutch bearings, the drive shaft extending through the roller clutch bearings and mechanically coupled thereto, wherein the first drive gear engages a first idle gear, and the first idle gear engages a first pulley gear, wherein the second drive gear engages a second pulley gear, the first pulley gear and the second pulley gear being adapted to rotate in opposite directions in response to translation of the rack, the drive pulley being adapted to be alternatively mechanically coupled to the first pulley gear and the second pulley gear, and further wherein a pulley shaft extends through each of the first pulley gear, the second pulley gear, and the drive pulley, the first pulley gear and the second pulley gear each being translatable relative to the drive pulley along an axis of the pulley shaft, wherein a first directional switch is aligned with the axis of the pulley shaft and coupled to the first pulley gear, the first directional switch being adapted to simultaneously move the first pulley gear into engagement with the drive pulley and the second pulley gear out of engagement with the drive pulley, and wherein a second directional switch is aligned with the axis of the pulley shaft and coupled to the second pulley gear, the second directional switch being adapted to simultaneously move the second pulley gear into engagement with the drive pulley and the first pulley gear out of engagement with the drive pulley. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An apparatus for delivering an intraluminal device, comprising:
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a gear and pulley mechanism comprising a first gear set and a second gear set, the first gear set and the second gear set each comprising a plurality of gears rotatable about parallel axes; an inner elongate member, the inner elongate member being fixed at a proximal end to a handle assembly; an outer elongate sheath disposed over the inner elongate member, the outer elongate sheath being coupled to a belt wound around a drive pulley, the outer elongate sheath adapted to be actuated by the first gear set rotating the drive pulley in a first rotational direction so as to move the elongate outer sheath in a distal direction relative to the inner elongate member, the outer elongate sheath being adapted to be actuated by the second gear set rotating the drive pulley in a second rotational direction opposite the first rotational direction so as to move the elongate outer sheath in a proximal direction relative to the inner elongate member; and a stabilizing element extending along a longitudinal axis of the inner elongate member and the outer elongate sheath for fixating the position of the intraluminal device during movement of the outer elongate sheath relative to the inner elongate member, wherein the stabilizing element is an elongate retaining wire configured to be mechanically engaged with the intraluminal device, the retaining wire passing through a proximal crown of the intraluminal device, the retaining wire being proximally movable to disengage from the proximal crown of the intraluminal device; wherein the first gear set comprises an idle gear, the idle gear mechanically coupled to a first pulley gear; wherein the second gear set comprises a second drive gear mechanically coupled to a second pulley gear; and wherein the drive pulley is adapted to be alternatively mechanically coupled to the first pulley gear and the second pulley gear, wherein a pulley shaft extends through each of the first pulley gear, the second pulley gear, and the drive pulley, the first pulley gear and the second pulley gear each being translatable relative to the drive pulley along an axis of the pulley shaft, wherein a first directional switch is aligned with the axis of the pulley shaft and coupled to the first pulley gear, the first directional switch being adapted to simultaneously move the first pulley gear into engagement with the drive pulley and the second pulley clear out of engagement with the drive pulley, and wherein a second directional switch is aligned with the axis of the pulley shaft and coupled to the second pulley gear, the second directional switch being adapted to simultaneously move the second pulley gear into engagement with the drive pulley and the first pulley gear out of engagement with the drive pulley. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. A method for resheathing an intraluminal device, comprising the steps of:
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(a) providing an intraluminal device and a delivery apparatus comprising; a gear and pulley mechanism comprising a first gear set and a second gear set; a drive pulley adapted to be alternatively mechanically coupled to the first gear set and the second gear set; a retractable sheath disposed over an inner elongate member, the retractable sheath mechanically coupled to the drive pulley by a belt; and wherein the drive pulley is adapted to be alternatively mechanically coupled to a first pulley gear of the first gear set and the second pulley gear of the second gear set, wherein a pulley shaft extends through each of the first pulley gear, the second pulley gear, and the drive pulley, the first pulley gear and the second pulley gear each being translatable relative to the drive pulley along an axis of the pulley shaft, wherein a first directional switch is aligned with the axis of the pulley shaft and coupled to the first pulley gear, the first directional switch being adapted to simultaneously move the first pulley gear into engagement with the drive pulley and the second pulley clear out of engagement with the drive pulley, and wherein a second directional switch is aligned with the axis of the pulley shaft and coupled to the second pulley gear, the second directional switch being adapted to simultaneously move the second pulley gear into engagement with the drive pulley and the first pulley gear out of engagement with the drive pulley; (b) translating the second pulley gear of the second gear set into engagement with the drive pulley; (c) activating a trigger to cause the drive pulley to rotate the belt with the sheath thereon in a proximal direction relative to the inner elongate member so as to partially deploy the intraluminal device; (d) translating the first pulley gear of the first gear set into engagement with the drive pulley with the first gear set; and (e) activating the trigger to cause the drive pulley to rotate the belt with the sheath thereon in a distal direction relative to the inner elongate member so as to resheath the partially deployed intraluminal device. - View Dependent Claims (22, 23, 24)
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Specification