BRAIDED VASCULAR DEVICES HAVING NO END CLAMPS
First Claim
Patent Images
1. A collapsible medical device, comprising:
- at least one layer of a plurality of metal strands woven into a tubular braided metal fabric having a proximal end, a distal end, and a segment there between;
the tubular woven metal fabric having an expanded preset configuration shaped for treatment of an opening in a body organ; and
the expanded preset configuration being deformable to a lesser cross-sectional dimension for delivery through a channel in a patient'"'"'s body, the woven metal fabric having a memory property whereby the medical device returns to the expanded preset configuration when delivered into the patient'"'"'s body, said proximal and distal ends being free of clamps and having at least a portion of the segment larger in diameter than the free wire ends in the expanded preset configuration.
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Accused Products
Abstract
In some embodiments, a medical device may include one or more of the following features: (a) a metal fabric formed of braided metal strands, (b) the medical device having a collapsed configuration for delivery through a channel in a patient'"'"'s body and having a generally dumbbell-shaped expanded configuration with two expanded diameter portions separated by a reduced diameter portion formed between opposed ends of the device and unsecured metal strand ends at the opposed ends, and (d) a thrombogenic agent located on the metal fabric.
273 Citations
25 Claims
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1. A collapsible medical device, comprising:
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at least one layer of a plurality of metal strands woven into a tubular braided metal fabric having a proximal end, a distal end, and a segment there between; the tubular woven metal fabric having an expanded preset configuration shaped for treatment of an opening in a body organ; and the expanded preset configuration being deformable to a lesser cross-sectional dimension for delivery through a channel in a patient'"'"'s body, the woven metal fabric having a memory property whereby the medical device returns to the expanded preset configuration when delivered into the patient'"'"'s body, said proximal and distal ends being free of clamps and having at least a portion of the segment larger in diameter than the free wire ends in the expanded preset configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A medical device comprising:
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a metal fabric formed of braided metal strands; the medical device having a collapsed configuration for delivery through a channel in a patient'"'"'s body and having a generally dumbbell-shaped expanded configuration with two expanded diameter portions separated by a reduced diameter portion formed between opposed ends of the device and unsecured metal strand ends at the opposed ends. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method of forming a medical device, the method comprising the steps of:
- providing a metal fabric formed of a plurality of braided strands, the strands being formed of a metal which can be heat treated to substantially set a desired shape;
deforming the metal fabric to generally conform to a wall surface of a moulding element; heat treating the metal fabric in contact with the surface of the moulding element at an elevated temperature, the temperature and the duration of the heat treatment being sufficient to substantially set the shape of the fabric in its deformed state; removing the metal fabric from contact with the moulding element; and cutting the fabric adjacent the device side of the clamps after heat treatment. - View Dependent Claims (16, 17, 18, 19)
- providing a metal fabric formed of a plurality of braided strands, the strands being formed of a metal which can be heat treated to substantially set a desired shape;
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20. A method for delivering a self-expanding medical device to a selected site in a vascular system comprising the steps of:
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(a) selecting the combination of;
(i) a delivery device inner catheter having a lumen extending from a proximal end to a distal end, the delivery device having an outer diameter adapted to slidingly fit within the lumen of a delivery catheter, (ii) an elongate, flexible member coaxially insertable through the lumen of the delivery device catheter, said elongate flexible member having a plunger member affixed thereto sized to at least partially fit within the lumen of the delivery device catheter when a proximally directed tension force is applied to the elongate flexible member with respect to the delivery device catheter, (iii) a braided tubular device having at least a portion of a segment larger in diameter than free wire ends in the expanded preset configuration with the free ends of individual strands comprising the device captured between the plunger member and the delivery device catheter;(b) feeding the delivery device catheter with the braided tubular device attached through a lumen of the delivery catheter and out thereof; and (c) moving the elongate flexible member relative to the tubular delivery device catheter to release the tubular device from the tubular delivery device catheter. - View Dependent Claims (21, 22, 23, 24, 25)
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Specification