摘要:
The present invention provides a catheter system which includes a catheter, an expandable balloon, at least one securement member, and a stent. The stent is disposed about the catheter and comprises at least one undulating band that extends circumferentially around the longitudinal axis of the catheter system. The undulating band includes interconnected strut members which form a series of alternating peaks and valleys. Adjacent strut members comprise a strut pair, wherein each strut member of the strut pair includes a protuberance positioned along the length of the strut member, between a peak and a valley. The protuberances, which are substantially circumferentially opposed to one another, engage a securement member, thereby minimizing lateral stent movement on the delivery system during delivery.
摘要:
The invention includes methods of and apparatus for endovascularly replacing a heart valve of a patient. One aspect of the invention provides a method including the steps of endovascularly delivering a replacement valve and an expandable anchor to a vicinity of the heart valve in an unexpanded configuration; and applying an external non-hydraulically expanding or non-pneumatically expanding actuation force on the anchor to change the shape of the anchor, such as by applying proximally and/or distally directed force on the anchor using a releasable deployment tool to expand and contract the anchor or parts of the anchor. Another aspect of the invention provides an apparatus including a replacement valve; an anchor; and a deployment tool comprising a plurality of anchor actuation elements adapted to apply a non-hydraulically expanding or non-pneumatically expanding actuation force on the anchor to reshape the anchor.
摘要:
Apparatus for endovascularly replacing a patient's heart valve, including: a replacement valve adapted to be delivered endovascularly to a vicinity of the heart valve; an expandable anchor adapted to be delivered endovascularly to the vicinity of the heart valve; and a lock mechanism configured to maintain a minimum amount of anchor expansion. The invention also includes a method for endovascularly replacing a patient's heart valve. In some embodiments the method includes the steps of: endovascularly delivering a replacement valve and an expandable anchor to a vicinity of the heart valve; expanding the anchor to a deployed configuration; and locking the anchor in the deployed configuration.
摘要:
The present invention provides methods and apparatus for endovascularly replacing a patient's heart valve. The apparatus includes a replacement valve and an anchor having an expandable braid. In some embodiments, the expandable braid is fabricated from a single strand of wire. In some embodiments, the expandable braid comprises at least one turn feature. The anchor and the valve preferably are configured for endovascular delivery and deployment.
摘要:
The invention includes methods of and apparatus for endovascularly replacing a heart valve of a patient. One aspect of the invention provides a method including the steps of endovascularly delivering a replacement valve and an expandable anchor to a vicinity of the heart valve in an unexpanded configuration; and applying an external non-hydraulic or non-pneumatic actuation force on the anchor to change the shape of the anchor, such as by applying proximally and/or distally directed force on the anchor using a releasable deployment tool to expand and contract the anchor or parts of the anchor.
摘要:
A catheter assembly for treatment of a vessel bifurcation. The catheter assembly is adapted for use with a single guidewire, wherein the guidewire is used to both position the catheter assembly within a main vessel of the vessel bifurcated and then be advanced into a branch vessel of the vessel bifurcated. A guidewire lumen of the catheter assembly is defined by a portion of a catheter shaft of the catheter assembly and a portion of a side catheter branch of the catheter assembly. The side catheter branch extends from a distal end of the catheter shaft at a proximal location and is connected at a distal location to a main catheter branch. After the catheter assembly has been advanced over the guidewire to a position within the main vessel at the vessel bifurcation, the guidewire is retracted, a portion of the side catheter branch is advanced into the branch vessel, and the guidewire is advanced into the branch vessel.
摘要:
The present invention provides a catheter system which includes a catheter, an expandable balloon, at least one securement member, and a stent. The stent is disposed about the catheter and comprises at least one undulating band that extends circumferentially around the longitudinal axis of the catheter system. The undulating band includes interconnected strut members which form a series of alternating peaks and valleys. Adjacent strut members comprise a strut pair, wherein each strut member of the strut pair includes a protuberance positioned along the length of the strut member, between a peak and a valley. The protuberances, which are substantially circumferentially opposed to one another, engage a securement member, thereby minimizing lateral stent movement on the delivery system during delivery.
摘要:
A catheter assembly for treatment of a vessel bifurcation. The catheter assembly is adapted for use with a single guidewire, wherein the guidewire is used to both position the catheter assembly within a main vessel of the vessel bifurcated and then be advanced into a branch vessel of the vessel bifurcated. A guidewire lumen of the catheter assembly is defined by a portion of a catheter shaft of the catheter assembly and a portion of a side catheter branch of the catheter assembly. The side catheter branch extends from a distal end of the catheter shaft at a proximal location and is connected at a distal location to a main catheter branch. After the catheter assembly has been advanced over the guidewire to a position within the main vessel at the vessel bifurcation, the guidewire is retracted, a portion of the side catheter branch is advanced into the branch vessel, and the guidewire is advanced into the branch vessel.
摘要:
The present invention provides methods and apparatus for endovascularly replacing a patient's heart valve. The apparatus includes a replacement valve and an expandable anchor configured for endovascular delivery to a vicinity of the patient's heart valve. In some embodiments, the replacement valve is adapted to wrap about the anchor, for example, by everting during endovascular deployment. In some embodiments, the replacement valve is not connected to expandable portions of the anchor. In some embodiments, the anchor is configured for active foreshortening during endovascular deployment. In some embodiments, the anchor includes expandable lip and skirt regions for engaging the patient's heart valve during deployment. In some embodiments, the anchor comprises a braid fabricated from a single strand of wire. In some embodiments, the apparatus includes a lock configured to maintain anchor expansion. The invention also includes methods for endovascularly replacing a patient's heart valve. In some embodiments, the method includes the steps of endovascularly delivering a replacement valve and an expandable anchor to a vicinity of the heart valve, wrapping at least a portion of the replacement valve about the anchor, and expanding the anchor to a deployed configuration.
摘要:
The present invention relates to an apparatus for replacing a native aortic valve, the apparatus includes an expandable anchor adapted to be endovascularly delivered and secured at a site within the native aortic valve. The expandable anchor has a delivery length in a delivery configuration substantially greater than a deployed length in a deployed configuration. The apparatus may also include and a replacement valve configured to be secured within the anchor.