Low profile delivery system for transcatheter heart valve
First Claim
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1. An apparatus for delivering a prosthetic valve through the vasculature of a patient comprising:
- a steerable guide catheter having a handle portion and an elongated guide tube extending from the handle portion, the elongated guide tube having a distal end portion comprising a steerable section, the guide catheter further comprising a first adjustment mechanism on the handle portion and a pull wire operatively connecting the first adjustment mechanism to the steerable section for changing the curvature of the steerable section via manual adjustment of the first adjustment mechanism, the guide catheter further comprising a second adjustment mechanism coupled to the handle portion; and
a balloon catheter sized to slidably extend through the guide catheter, the balloon catheter comprising an elongated shaft extending coaxially through the guide tube and the handle portion, the shaft comprising a proximal end portion and a distal end portion, the balloon catheter further comprising an inflatable balloon mounted on the distal end portion of the shaft;
wherein the second adjustment mechanism comprises a rotatable component, wherein rotation of the rotatable component causes the shaft of the balloon catheter and the inflatable balloon to move longitudinally relative to the guide tube and the handle portion while the guide tube remains stationary upon rotation of the rotatable component;
wherein the second adjustment mechanism comprises a securement mechanism configured to selectively retain the shaft of the balloon catheter to prevent longitudinal sliding movement of the shaft relative to the second adjustment mechanism and release the shaft to permit longitudinal sliding movement of the shaft relative to the second adjustment mechanism and the guide tube without rotation of the rotatable component of the second adjustment mechanism.
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Accused Products
Abstract
A heart valve delivery apparatus includes a valve carrying member. A prosthetic valve is crimped onto the valve carrying member at a location that is distal or proximal to the balloon member, thereby providing a smaller profile delivery apparatus.
154 Citations
12 Claims
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1. An apparatus for delivering a prosthetic valve through the vasculature of a patient comprising:
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a steerable guide catheter having a handle portion and an elongated guide tube extending from the handle portion, the elongated guide tube having a distal end portion comprising a steerable section, the guide catheter further comprising a first adjustment mechanism on the handle portion and a pull wire operatively connecting the first adjustment mechanism to the steerable section for changing the curvature of the steerable section via manual adjustment of the first adjustment mechanism, the guide catheter further comprising a second adjustment mechanism coupled to the handle portion; and a balloon catheter sized to slidably extend through the guide catheter, the balloon catheter comprising an elongated shaft extending coaxially through the guide tube and the handle portion, the shaft comprising a proximal end portion and a distal end portion, the balloon catheter further comprising an inflatable balloon mounted on the distal end portion of the shaft; wherein the second adjustment mechanism comprises a rotatable component, wherein rotation of the rotatable component causes the shaft of the balloon catheter and the inflatable balloon to move longitudinally relative to the guide tube and the handle portion while the guide tube remains stationary upon rotation of the rotatable component; wherein the second adjustment mechanism comprises a securement mechanism configured to selectively retain the shaft of the balloon catheter to prevent longitudinal sliding movement of the shaft relative to the second adjustment mechanism and release the shaft to permit longitudinal sliding movement of the shaft relative to the second adjustment mechanism and the guide tube without rotation of the rotatable component of the second adjustment mechanism. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus for delivering a prosthetic valve through the vasculature of a patient comprising:
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a steerable guide catheter having a handle portion and an elongated guide tube extending from the handle portion, the elongated guide tube having a distal end portion comprising a steerable section, the guide catheter further comprising a rotatable adjustment knob on the handle portion and a pull wire operatively connecting the adjustment knob to the steerable section for changing the curvature of the steerable section via manual adjustment of the adjustment knob; and a balloon catheter comprising an elongated shaft extending coaxially through the guide tube, the shaft comprising a proximal end portion and a distal end portion, the balloon catheter further comprising an inflatable balloon mounted on the distal end portion of the shaft; wherein the guide catheter further comprises a flex indicator that moves relative to the handle portion upon manual adjustment of the adjustment knob;
wherein the rotatable knob is rotatable about a longitudinal axis of the shaft of the balloon catheter, wherein rotation of the rotatable knob is effective to increase and decrease tension in the pull wire to change the curvature of the steerable section; and
the flex indicator moves proximally and distally within the handle portion upon rotation of the rotatable knob. - View Dependent Claims (11, 12)
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Specification