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US 12,702,420 B2Granted
Vaso-occlusive devices and methods of use
AssigneeStryker European Operations Holdings 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.
Claims20
A vaso-occlusive device for occluding an aneurysm, comprising:
- an elongate inner member having a proximal end and a distal end;
- and
- a plurality of distally-open, adjacently arranged braided tubular members disposed over the inner member such that the inner member extends through a lumen of each braided tubular member, each braided tubular member having a proximal end and a distal end wherein the proximal end of each braided tubular member is fixed to the inner member at longitudinally spaced apart locations along the inner member and the distal end of each braided tubular member is not attached to the inner member, each braided tubular member having a proximal portion comprising a conical shaped portion which tapers outward from the proximal end towards the distal end of the braided tubular member to a distal end of the proximal portion and a distal portion connected to, and extending from, the distal end of the proximal portion and comprising a cylindrical shaped portion wherein the cylindrical shaped portion of the distal portion has a longer length than the conical shaped portion of the proximal portion;
- wherein the inner member comprises a closed pitch coil having a proximal end adjacent to the proximal end of one of the braided tubular members;
- wherein each of the braided tubular members has a radially collapsed configuration having a collapsed diameter when radially constrained within a delivery catheter, and a radially expanded configuration having an expanded diameter when released from the delivery catheter, wherein the expanded diameter is greater than the collapsed diameter;
- and
- wherein the braided tubular members comprise braided strands forming pores between the braided strands, and in the radially expanded configuration, the pores have a pore size of less than 0.06 mm2 such that the pores block blood from passing through the pores.
4 more elements
A vaso-occlusion system for occluding an aneurysm, the system comprising:
- a delivery catheter having a proximal end and a distal end having a distal end opening;
- and
- a vaso-occlusive device adapted to be pushed out of, and retrieved back into, the distal end opening of the delivery catheter, the vaso-occlusive device comprising
- an elongate inner member having a proximal end and a distal end, and
- a plurality of distally-open, adjacently arranged braided tubular members disposed over the inner member such that the inner member extends through a lumen of each braided tubular member, each braided tubular member having a proximal end and a distal end wherein the proximal end of each braided tubular member is fixed to the inner member at longitudinally spaced apart locations along the inner member and the distal end of each braided tubular member is not attached to the inner member, each braided tubular member having a proximal portion comprising a conical shaped portion which tapers outward from the proximal end towards the distal end of the braided tubular member to a distal end of the proximal portion and a distal portion connected to, and extending from, the distal end of the proximal portion and comprising a cylindrical shaped portion wherein the cylindrical shaped portion of the distal portion has a longer length than conical shaped portion of the proximal portion,
- wherein the inner member comprises a closed pitch coil having a proximal end adjacent to the proximal end of one of the braided tubular members;
- wherein each of the braided tubular members has a radially collapsed configuration having a collapsed diameter when radially constrained within a delivery catheter and a radially expanded configuration having an expanded diameter when released from the delivery catheter, wherein the expanded diameter is greater than the collapsed diameter, and
- wherein the braided tubular members comprise braided strands forming pores between the braided strands, and in the radially expanded configuration, the pores have a pore size of less than 0.06 mm2 such that the pores block blood from passing through the pores.
5 more elements
Dependencies are inferred from the claim text.