Embolic protection device including a Z-stent waist band
First Claim
1. An embolic protection device for capturing emboli in a body vessel, the device comprising:
- a frame having an expanded state and a collapsed state, the frame including a plurality of struts extending distally along a longitudinal axis from a proximal end to a distal end, the struts being configured to open radially to define the expanded state of the device for capturing emboli and to fold along the longitudinal axis to define the collapsed state of the device for retrieval of the device;
a waist band having an open and a closed state being disposed about the plurality of struts and attached to a middle portion of at least one of the plurality of struts of the frame, the waist band being formed of a plurality of members each having a proximal tip and a distal tip, each of the proximal and distal tips being attached at a waist band joint to the respective proximal or distal tip of an adjacent member such that the members form a “
Z”
pattern in the open state and lie nearly parallel to each other in the closed state, wherein adjacent struts have at least one waist band joint disposed therebetween in the open state; and
a filter portion defining a proximal filter end attached to the waist band and a distal filter end attached to the distal end of the frame, the distal filter end defining a round shape when the frame is in the expanded state, the proximal filter end corresponding to the “
Z”
pattern of the waist band in the open state such that a portion of the proximal filter end is attached to the at least one waistband joint disposed between adjacent struts, the filter portion configured to capture emboli in the expanded state.
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Accused Products
Abstract
An embolic protection device for capturing emboli in a body vessel having a frame and a z-stent waist band. The frame includes a plurality of struts configured to open radially to define an expanded state of the device for capturing emboli and to fold along the longitudinal axis to define a collapsed state of the device for deployment and retrieval. The waist band has an open and a closed state and is attached to within the frame between a proximal and distal end. The waist band is formed of a plurality of members attached at a joint to an adjacent member such that the members lie substantially parallel in the closed state and form a “Z” pattern in the open state. A filter portion is attached to the waist band and configured to capture emboli in the expanded state.
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Citations
25 Claims
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1. An embolic protection device for capturing emboli in a body vessel, the device comprising:
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a frame having an expanded state and a collapsed state, the frame including a plurality of struts extending distally along a longitudinal axis from a proximal end to a distal end, the struts being configured to open radially to define the expanded state of the device for capturing emboli and to fold along the longitudinal axis to define the collapsed state of the device for retrieval of the device; a waist band having an open and a closed state being disposed about the plurality of struts and attached to a middle portion of at least one of the plurality of struts of the frame, the waist band being formed of a plurality of members each having a proximal tip and a distal tip, each of the proximal and distal tips being attached at a waist band joint to the respective proximal or distal tip of an adjacent member such that the members form a “
Z”
pattern in the open state and lie nearly parallel to each other in the closed state, wherein adjacent struts have at least one waist band joint disposed therebetween in the open state; anda filter portion defining a proximal filter end attached to the waist band and a distal filter end attached to the distal end of the frame, the distal filter end defining a round shape when the frame is in the expanded state, the proximal filter end corresponding to the “
Z”
pattern of the waist band in the open state such that a portion of the proximal filter end is attached to the at least one waistband joint disposed between adjacent struts, the filter portion configured to capture emboli in the expanded state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An assembly for placing and retrieving an embolic protection device for capturing emboli in a body vessel, the assembly comprising:
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an outer sheath having a tubular body, the tubular body including a lumen therethrough and having a distal part; an inner member having a proximal and a distal portion, the inner member being disposed within the lumen of the outer sheath and configured for axial movement relative to the outer sheath; an embolic protection device coaxially disposed within the lumen of the outer sheath and attached to the distal portion of the inner member, the device being deployable through the distal part of the outer sheath by means of the relative axial movement of the inner member, the device comprising; a frame having an expanded state and a collapsed state, the frame including a plurality of struts extending distally along a longitudinal axis from a proximal end to a distal end, the struts being configured to open radially to define the expanded state of the device for capturing emboli and to fold along the longitudinal axis to define the collapsed state of the device for retrieval of the device; a waist band having an open and a closed state being disposed about the plurality of struts and attached to the frame between the proximal and distal ends to a middle portion of at least one of the plurality of struts, the waist band being formed of a plurality of members each having a proximal tip and a distal tip, each of the proximal and distal tips being attached at a waist band joint to the respective proximal or distal tip of an adjacent member such that the members lie nearly parallel in the closed state and form a “
Z”
pattern in the open state, wherein adjacent struts have at least one waist band joint disposed therebetween in the open state; anda filter portion defining a proximal filter end attached to the waist band and a distal filter end, the proximal filter end defining a “
Z”
pattern corresponding to the “
Z”
pattern of the waist band such that a portion of the proximal filter end is attached to the at least one waistband joint disposed between adjacent struts in the open state, the distal filter end defining a round shape when the frame is in the expanded state, the filter portion configured to capture emboli in the expanded state. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. An embolic protection device for capturing emboli in a body vessel, the device comprising:
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a frame having an expanded state and a collapsed state, the frame including a plurality of struts extending distally along a longitudinal axis from a proximal end to a distal end, the struts being configured to open radially to define the expanded state of the device for capturing emboli and to fold along the longitudinal axis to define the collapsed state of the device for retrieval of the device; a waist band having an open and a closed state being attached to a middle portion of at least one of the plurality of struts of the frame, the waist band being formed of a plurality of members each having a proximal tip and a distal tip, each of the proximal and distal tips being attached at a waist band joint to the respective proximal or distal tip of an adjacent member such that the members form a “
Z”
pattern in the open state and lie nearly parallel to each other in the closed state, wherein adjacent struts have at least one waist band joint disposed therebetween in the open state; anda filter portion defining a proximal filter end attached to the waist band and a distal filter end attached to the distal end of the frame, the proximal filter end corresponding to the “
Z”
pattern of the waist band in the open state such that a portion of the proximal filter end is attached to the at least one waist band joint disposed between adjacent struts, the distal filter end defining a round shape when the frame is in the expanded state, the filter portion configured to capture emboli in the expanded state.
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25. A method of filtering emboli from a body cavity having body walls, the method comprising:
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providing an embolic protection device including a frame having a plurality of struts and having an expanded state and a collapsed state, a “
Z”
pattern waist band having an open and a closed state being disposed about the plurality of struts and attached to the frame between the proximal and distal ends to a middle portion of at least one of a plurality of struts, and a filter portion, the waist band being formed of a plurality of members each having a proximal tip and a distal tip, each of the proximal and distal tips being attached at a joint to a respective proximal or distal tip of an adjacent member such that the members form a “
Z”
pattern in the open state and lie nearly parallel in the closed state, the filter portion defining a proximal filter end attached to the waist band a distal filter end, the proximal filter end defining a “
Z”
pattern in the open state corresponding to the “
Z”
pattern of the waist band in the open state, wherein adjacent struts have at least one joint disposed therebetween in the open state, the distal filter end defining a round shape when the frame is in the expanded state and a portion of the proximal filter end is attached to the at least one joint disposed between adjacent struts;positioning the embolic protection device in a desired location to capture emboli within the filter portion; and expanding the embolic protection device within the body cavity.
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Specification