VASO-OCCLUSIVE DEVICES AND METHODS OF USE
First Claim
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1. A vaso-occlusion system for occluding an aneurysm, the system comprising:
- a delivery catheter extending from a proximal end to a distal end; and
a vaso-occlusive device within the delivery catheter, wherein the vaso-occlusive device is adapted to be pushed out of, and retrieved back into, the distal end of the delivery catheter, the vaso-occlusive device comprisinga soft braided tubular member having a longitudinal axis,wherein the braided tubular member is formed of about 24 to 36 strands comprising one or more Nitinol wires, each strand having a diameter that is 0.0010 inches or less,wherein the braided tubular member has a length that is greater than 5 cm, forms a braid angle between crossing strands in a direction of the longitudinal axis of about 35 degrees or less when the braided tubular member is held in a collapsed configuration within the delivery catheter, and wherein the braided tubular member expands from the collapsed configuration to a flat oval deployed configuration released from the delivery catheter.
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Abstract
Vaso-occlusive apparatuses, including implants, and methods of using them to treat aneurysms. For example, described herein are expandable vaso-occlusive implants that include one or more soft and expandable braided member coupled to a pushable member such as a coil that maybe inserted and retrieved from within an aneurism using a delivery catheter. In particular, the expandable implants described herein are configured to allow relatively soft and elongate implants to be pushed out of a cannula without binding up within the cannula.
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Citations
54 Claims
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1. A vaso-occlusion system for occluding an aneurysm, the system comprising:
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a delivery catheter extending from a proximal end to a distal end; and a vaso-occlusive device within the delivery catheter, wherein the vaso-occlusive device is adapted to be pushed out of, and retrieved back into, the distal end of the delivery catheter, the vaso-occlusive device comprising a soft braided tubular member having a longitudinal axis, wherein the braided tubular member is formed of about 24 to 36 strands comprising one or more Nitinol wires, each strand having a diameter that is 0.0010 inches or less, wherein the braided tubular member has a length that is greater than 5 cm, forms a braid angle between crossing strands in a direction of the longitudinal axis of about 35 degrees or less when the braided tubular member is held in a collapsed configuration within the delivery catheter, and wherein the braided tubular member expands from the collapsed configuration to a flat oval deployed configuration released from the delivery catheter. - View Dependent Claims (3, 4, 7, 9, 10, 11, 14, 15, 27, 28, 29, 52, 53, 54)
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2. (canceled)
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5-6. -6. (canceled)
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8. (canceled)
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12-13. -13. (canceled)
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16-26. -26. (canceled)
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30-46. -46. (canceled)
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47. A vaso-occlusion system for occluding an aneurysm, the system comprising:
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a delivery catheter; and a vaso-occlusive device adapted to be pushed out of, and retrieved back into, a distal end opening of the delivery catheter, the vaso-occlusive device comprising a braided tubular member having a longitudinal axis, wherein the braided tubular member is formed of about 24 to 36 strands, each strand having a thickness that is 0.0010 inches or less, wherein braid angles formed between crossing strands of the braided tubular member in a direction of the longitudinal axis are about 35 degrees or less when the braided tubular member is held in a collapsed configuration within the delivery catheter, and wherein the braided tubular member has a flat oval deployed configuration when released from the delivery catheter. - View Dependent Claims (48, 49, 50, 51)
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Specification