Embolic protection guide wire
First Claim
1. A device for passing fluid in a vessel while preventing emboli in the fluid from passing through the vessel, comprising:
- a guide wire having a proximal end and a distal end;
a tubular shaft member having a proximal and distal end which is movable along the guide wire in a co-axial arrangement;
a filtering assembly including a plurality of splines formed from a portion of the tubular shaft member, the filtering assembly being movable between a collapsed position and expanded position, each spline being movable into a recess formed on the filtering assembly when the filtering assembly is in the collapsed position; and
a sheath, the filtering assembly being constricted within the sheath while in the collapsed position and expanded within the vessel when released from constriction within the sheath to become disposed against the vessel to pass fluid in the vessel while blocking the passage of emboli in the vessel.
0 Assignments
0 Petitions
Accused Products
Abstract
A sheath attached to a guide wire, a tubular shaft member slidable on the guide wire and a filtering assembly constricted within the sheath are movable in a vessel to a position distal to a lesion in the direction of fluid flow. The filtering assembly may be formed from a plurality of angularly spaced splines and a mesh disposed on the splines having properties of passing fluid in the vessel while blocking the passage of emboli in the fluid. The splines may be provided with shape memory for expanding against the wall of the vessel when released from constriction by the sheath. The sheath may be moved relative to the filtering assembly and the support member to release the filter for expansion against the vessel wall. An interventional device can be used to treat the lesion. Any emboli released into the vessel as a result of the interventional treatment are blocked by the filter member while fluid is allowed to pass there through.
-
Citations
19 Claims
-
1. A device for passing fluid in a vessel while preventing emboli in the fluid from passing through the vessel, comprising:
-
a guide wire having a proximal end and a distal end; a tubular shaft member having a proximal and distal end which is movable along the guide wire in a co-axial arrangement; a filtering assembly including a plurality of splines formed from a portion of the tubular shaft member, the filtering assembly being movable between a collapsed position and expanded position, each spline being movable into a recess formed on the filtering assembly when the filtering assembly is in the collapsed position; and a sheath, the filtering assembly being constricted within the sheath while in the collapsed position and expanded within the vessel when released from constriction within the sheath to become disposed against the vessel to pass fluid in the vessel while blocking the passage of emboli in the vessel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A method of passing fluid in a vessel and of preventing emboli in the fluid from passing through the vessel from a lesion in the vessel, including the steps of:
-
providing a filtering assembly having constricted and expanded positions and having properties in the expanded position of passing fluid while blocking the passage of emboli from the lesion, wherein the filtering assembly includes a plurality of splines formed from a portion of a tubular member, the tubular member including a recess in which the splines may be housed; disposing the filtering in a sheath to collapse the filtering assembly into the constricted position, the splines being housed within the recesses formed on the tubular member in the constricted position, positioning the filtering assembly and the sheath in the vessel at a position past the lesion in the direction of the fluid flow in the vessel, producing relative movement between the sheath and the tubular member in a direction to move the filtering assembly into the expanded position, and expanding the opening in the vessel at the position of the lesion with an interventional device while the filtering assembly remains in the expanded relationship to provide for the operation of the filtering assembly in passing the fluid while blocking the passage of emboli created during the expansion of the opening in the vessel. - View Dependent Claims (16, 17, 18, 19)
-
Specification