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US 11,633,190 B2Granted
Vaso-occlusive devices and methods of use
AssigneeStryker European Holdings I, LLC
InventorsMichael P. Wallace, E. Skott Greenhalgh
Life of this patent
Estimating the term…
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.
Claims33
A vaso-occlusion system for occluding an aneurysm, the system comprising:
- a delivery catheter;
- 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, the braided tubular member having a collapsed configuration having a collapsed diameter when compressed by and within the delivery catheter, and self-expandable to an expanded diameter greater than the collapsed diameter in a deployed configuration when released from the delivery catheter,
- wherein the braided tubular member is formed of about 24 to 36 strands,
- 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,
- wherein the braided tubular member has a non-circular transverse shape in the deployed configuration when released from the delivery catheter;
- and
- a friction element configured (1) to frictionally couple the braided tubular member to a pusher member when the braided tubular member is in the collapsed configuration, said frictional coupling caused by compression within the delivery catheter within the delivery catheter, and (2) to frictionally release the braided tubular member from the pusher member when the braided tubular member self-expands to the expanded diameter in the deployed configuration when released from the delivery catheter.
4 more elements
A vaso-occlusive device, comprising:
- a braided tubular member having a longitudinal axis, the braided tubular member having a collapsed configuration having a collapsed diameter when compressed by and within a delivery catheter and self-expandable to an expanded diameter greater than the collapsed diameter in a deployed configuration when released from the delivery catheter,
- wherein the braided tubular member is formed of about 24 to 36 strands,
- 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 a delivery catheter,
- wherein the braided tubular member has a non-circular transverse shape in the deployed configuration when released from the delivery catheter,
- wherein the braided tubular member has a width between 0.75 mm and 3.0 mm when in the deployed configuration, and
- a friction element configured (1) to frictionally couple the braided tubular member to a pusher member when the braided tubular member is in the collapsed configuration, said frictional coupling caused by compression within the delivery catheter within the delivery catheter, and (2) to frictionally release the braided tubular member from the pusher member when the braided tubular member self-expands to the expanded diameter in the deployed configuration when released from the delivery catheter.
3 more elements
A vaso-occlusive device, comprising:
- a braided tubular member having a longitudinal axis, the braided tubular member having a collapsed configuration having a collapsed diameter when compressed by and within a delivery catheter, and self-expandable to an expanded diameter greater than the collapsed diameter in a deployed configuration when released from the delivery catheter herein the braided tubular member is formed of about 24 to 36 strands comprising wires made out of composite materials,
- 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 a delivery catheter,
- wherein the braided tubular member has a non-circular transverse shape in the deployed configuration when released from the delivery catheter, and
- wherein braid angles formed between crossing strands of the braided tubular member in the direction of the longitudinal axis are about 35 to 90 degrees when the braided tubular member is in the deployed configuration, and
- a friction element configured (1) to frictionally couple the braided tubular member to a pusher member when the braided tubular member is in the collapsed configuration within the delivery catheter, said frictional coupling caused by compression within the delivery catheter, and (2), to frictionally release the braided tubular member from the pusher member when the braided tubular member self-expands to the expanded diameter in the deployed configuration when released from the delivery catheter.
2 more elements
Dependencies are inferred from the claim text.