Method of pulsatile neurovascular aspiration with telescoping catheter
First Claim
1. A method of aspirating a vascular occlusion from a remote site, comprising the steps of:
- advancing a first elongate tubular body through a vascular access site and into a body vessel, the first elongate tubular body having a distal end;
thereafter advancing a second tubular body distally such that the second tubular body extends beyond the first elongate tubular body distal end to reach the remote site, the second tubular body having a lumen and a length, the length of the second tubular body being shorter than a length of the first elongate tubular body, wherein advancing the second tubular body distally comprises;
distally advancing a control wire, the control wire comprising a central lumen and a distal end, the distal end of the control wire being attached to and extending proximally from a proximal end of the second tubular body;
aspirating a thrombus from the remote site into the lumen of the second tubular body by applying pulsatile vacuum to the first elongate tubular body; and
advancing an agitator distally through the central lumen of the control wire such that a distal end of the agitator extends beyond the distal end of the control wire and is positioned within the lumen of the second tubular body, wherein the agitator extends beyond the distal end of the control wire and is positioned within the lumen of the second tubular body while applying the pulsatile vacuum such that the agitator is configured to agitate the thrombus and to facilitate the aspirating the thrombus through the lumen of the second tubular body during the application of pulsatile vacuum.
4 Assignments
0 Petitions
Accused Products
Abstract
A method of aspirating a vascular occlusion from a remote site is provided. The method includes the steps of advancing a first elongate tubular body through a vascular access site and into a body vessel, advancing a second tubular body distally to extend beyond the first elongate tubular body to reach the remote site, and aspirating thrombus from the site into the lumen by applying pulsatile vacuum to the first elongate tubular body. The second tubular body has a lumen and a length that is shorter than the first elongate tubular body. The pulsatile application of vacuum may cause the distal tip of the second tubular body to open and close like a jaw, which facilitates reshaping the thrombus or biting or nibbling the thrombus material into strands or pieces to facilitate proximal withdrawal under negative pressure through the lumen of the second tubular body.
394 Citations
20 Claims
-
1. A method of aspirating a vascular occlusion from a remote site, comprising the steps of:
-
advancing a first elongate tubular body through a vascular access site and into a body vessel, the first elongate tubular body having a distal end; thereafter advancing a second tubular body distally such that the second tubular body extends beyond the first elongate tubular body distal end to reach the remote site, the second tubular body having a lumen and a length, the length of the second tubular body being shorter than a length of the first elongate tubular body, wherein advancing the second tubular body distally comprises; distally advancing a control wire, the control wire comprising a central lumen and a distal end, the distal end of the control wire being attached to and extending proximally from a proximal end of the second tubular body; aspirating a thrombus from the remote site into the lumen of the second tubular body by applying pulsatile vacuum to the first elongate tubular body; and advancing an agitator distally through the central lumen of the control wire such that a distal end of the agitator extends beyond the distal end of the control wire and is positioned within the lumen of the second tubular body, wherein the agitator extends beyond the distal end of the control wire and is positioned within the lumen of the second tubular body while applying the pulsatile vacuum such that the agitator is configured to agitate the thrombus and to facilitate the aspirating the thrombus through the lumen of the second tubular body during the application of pulsatile vacuum. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification