External steerable fiber for use in endoluminal deployment of expandable devices
First Claim
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1. A catheter assembly comprising:
- a leading end;
a trailing end;
an expandable device positioned at the leading end, the expandable device having a proximal end and a distal end, the expandable device having a collapsed configuration for endoluminal delivery of the expandable device to a treatment site in a body of a patient, and an expanded configuration having a diameter larger than the diameter of the collapsed configuration;
an axially displaceable sheath extending around the expandable device to releasably constrain the expandable device toward the collapsed configuration to allow outward expansion of the expandable device from the collapsed configuration toward an intermediate configuration and a partially deployed configuration in response to axial displacement of the axially displaceable sheath at the treatment site in the body of the patient;
a flexible film sleeve wrapped circumferentially around the expandable device;
a coupling member cooperating with a plurality of openings in the sleeve for releasably coupling portions of the sleeve to one another to limit expansion of at least a portion of the expandable device after removal of the axially displaceable sheath, the sleeve limiting expansion of the expandable device to the intermediate configuration and partially deployed configuration;
a pusher axially slidable relative to the axially displaceable sheath and configured to prevent movement of the expandable device in response to release of the axially displaceable sheath; and
a steering line operatively coupled to the sleeve to allow axial bending of the at least a portion of the expandable device while in the intermediate configuration and the partially deployed configuration in response to selective displacement of the steering line relative to the catheter.
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Abstract
The present disclosure describes treatment of the vasculature of a patient with an expandable implant. The implant is constrained to a reduced delivery diameter for delivery within the vasculature by at least one sleeve. The implant can be constrained to other diameters, such as an intermediate diameter. The sleeves can be expanded, allowing for expansion of the diameter of the expandable implant, by disengaging a coupling member from the sleeve or sleeves from outside of the body of the patient. The expandable implant can comprise a steering line or lines which facilitate bending and steering of the expandable implant through the vasculature of a patient.
115 Citations
20 Claims
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1. A catheter assembly comprising:
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a leading end; a trailing end; an expandable device positioned at the leading end, the expandable device having a proximal end and a distal end, the expandable device having a collapsed configuration for endoluminal delivery of the expandable device to a treatment site in a body of a patient, and an expanded configuration having a diameter larger than the diameter of the collapsed configuration; an axially displaceable sheath extending around the expandable device to releasably constrain the expandable device toward the collapsed configuration to allow outward expansion of the expandable device from the collapsed configuration toward an intermediate configuration and a partially deployed configuration in response to axial displacement of the axially displaceable sheath at the treatment site in the body of the patient; a flexible film sleeve wrapped circumferentially around the expandable device; a coupling member cooperating with a plurality of openings in the sleeve for releasably coupling portions of the sleeve to one another to limit expansion of at least a portion of the expandable device after removal of the axially displaceable sheath, the sleeve limiting expansion of the expandable device to the intermediate configuration and partially deployed configuration; a pusher axially slidable relative to the axially displaceable sheath and configured to prevent movement of the expandable device in response to release of the axially displaceable sheath; and a steering line operatively coupled to the sleeve to allow axial bending of the at least a portion of the expandable device while in the intermediate configuration and the partially deployed configuration in response to selective displacement of the steering line relative to the catheter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A catheter assembly comprising:
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a leading end; a trailing end; an expandable device defining a trunk lumen and a pair of legs positioned at the leading end, the expandable device having a proximal end and a distal end, the expandable device having a collapsed configuration for endoluminal delivery of the expandable device to a treatment site in a body of a patient, and an expanded configuration having a diameter larger than the diameter of the collapsed configuration; an axially displaceable sheath extending around the expandable device and configured to releasably constrain the expandable device toward the collapsed configuration to allow outward expansion of the expandable device from the collapsed configuration toward an intermediate configuration and a partially deployed configuration in response to axial displacement of the axially displaceable sheath, and apply torque to rotate the expandable device; a flexible film sleeve wrapped circumferentially around the expandable device; a coupling member cooperating with a plurality of openings in the sleeve for releasably coupling portions of the sleeve to one another to limit expansion of at least a portion of the expandable device after removal of the axially displaceable sheath, the sleeve limiting expansion of the expandable device to the intermediate configuration and the partially deployed configuration; a pusher axially slidable relative to the axially displaceable sheath and configured to prevent movement of the expandable device in response to release of the axially displaceable sheath; a constraining member configured to receive and retain one or both of the pair of legs; and a steering line operatively coupled to the sleeve to allow axial bending of the at least a portion of the expandable device while in the intermediate configuration and the partially deployed configuration in response to selective displacement of the steering line relative to the catheter.
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Specification