Back to results
US 2014/0277099 A1Published application
Vaso-occlusive devices including a friction element and methods of use
AssigneeTW Medical Technologies, 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. The vaso-occlusive implants described herein 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 as well as a friction element between the soft braided member and the coil. The friction element allows the relatively soft and elongate implant to be pushed out of a cannula without binding up within the cannula.
Claims30
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 comprising:
- an elongate inner member having a length;
- an outer braided tubular member, wherein the braided tubular member has a length that is greater than 5 cm and has a collapsed configuration when held within the delivery catheter, and expands to a diameter of greater than 1.5 times the diameter of the inner member when released from the delivery cannula;
- and
- a friction element that is not attached to the inner member and is configured to contact both the inner member and the braided tubular member when the inner member is in the collapsed configuration when held within the delivery catheter so that the braided tubular member moves with the inner member when the vaso-occlusive device is pushed distally out of the delivery catheter.
4 more elements
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 comprising:
- an elongate inner member having a length, wherein the length comprises a plurality of elongate regions having a first diameter separated by discrete regions having a second diameter that is greater than the first diameter but less than 1.5 times the first diameter, wherein the discrete regions form friction elements;
- an outer braided tubular member, wherein the braided tubular member has a length that is less than the length of the elongate inner member and greater than 5 cm, and has a collapsed configuration when held within the delivery catheter, and expands to a diameter of greater than 1.5 times the first diameter of the inner member when released from the delivery cannula;
- and
- wherein the friction elements are positioned along the length of the inner member proximal to the distal end of the outer braided tubular member and distal to the proximal end of the outer braided tubular member, and are configured to press the braided tubular member against the catheter when the inner member is in the collapsed configuration within the delivery catheter so that the braided tubular member moves with the inner member when the vaso-occlusive device is pushed distally out of the delivery catheter.
4 more elements
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 comprising:
- an elongate inner member having a length and a diameter;
- an outer braided tubular member, wherein the braided tubular member has a length that is less than the length of the elongate inner member and greater than 5 cm, and has a collapsed configuration when held within the delivery catheter, and expands to a diameter of greater than 1.5 times the diameter of the inner member when released from the delivery cannula;
- and
- a plurality of friction elements on the inner member at locations along the length of the inner member proximal to the distal end of the outer braided tubular member and distal to the proximal end of the outer braided tubular member, wherein the friction elements are configured to press the braided tubular member against the catheter when the inner member is in the collapsed configuration within the delivery catheter so that the braided tubular member moves with the inner member when the vaso-occlusive device is pushed distally out of the delivery catheter.
4 more elements
A method of occluding an aneurysm in a patient, the method comprising:
- inserting a catheter into the patient, wherein the catheter houses a vaso-occlusive device in a collapsed configuration within a lumen of the catheter, and the vaso-occlusive device comprises an elongate inner member having a length, an outer braided tubular member coaxial with the inner member and having a length that is less than the inner member and greater than 5 cm, and a friction element that is not attached to the inner member and is configured to contact both the inner member and the braided tubular member while the vaso-occlusive device is in the collapsed configuration within the delivery catheter, so that the braided tubular member moves with the inner member when the vaso-occlusive device is pushed distally out of the delivery catheter;
- and
- pushing the vaso-occlusive device distally out of the catheter by pushing the inner member, so that the braided tubular member expands to a diameter of greater than 1.5 times the diameter of the inner member in an expanded configuration when released from the delivery cannula.
Dependencies are inferred from the claim text.