Infusion catheter having an atraumatic tip
First Claim
Patent Images
1. Apparatus suitable for disrupting a vascular occlusion adhered to a vessel wall, the apparatus comprising:
- an infusion catheter having proximal and distal ends and a lumen extending therebetween, an atraumatic tip disposed at the distal end, and at least one delivery port disposed proximal of the atraumatic tip in fluid communication with the lumen, the at least one delivery port configured to infuse fluid into the occlusion so that the fluid reduces adhesion of the occlusion to an intima of the vessel wall;
an emboli removal catheter having a proximal end, a distal end including an occlusive element, and a lumen extending between the proximal and distal ends, the lumen sized to permit the longitudinal advancement of the infusion catheter therethrough; and
a venous return sheath having proximal and distal ends and a lumen extending therebetween, the venous return sheath in fluid communication with the lumen of the emboli removal catheter and is adapted to be disposed in a patient'"'"'s venous system.
3 Assignments
0 Petitions
Accused Products
Abstract
The present invention is directed to apparatus and methods for treating a vascular occlusion by providing an infusion catheter having an atraumatic tip and at least one delivery port configured to infuse fluid into the occlusion. The fluid that is infused dilutes the occlusion and reduces adhesion of the occlusion to an intima of the vessel wall, thereby causing the occlusion to dislodge. Emboli generated in the process are directed into an emboli removal catheter for removal.
-
Citations
35 Claims
-
1. Apparatus suitable for disrupting a vascular occlusion adhered to a vessel wall, the apparatus comprising:
-
an infusion catheter having proximal and distal ends and a lumen extending therebetween, an atraumatic tip disposed at the distal end, and at least one delivery port disposed proximal of the atraumatic tip in fluid communication with the lumen, the at least one delivery port configured to infuse fluid into the occlusion so that the fluid reduces adhesion of the occlusion to an intima of the vessel wall;
an emboli removal catheter having a proximal end, a distal end including an occlusive element, and a lumen extending between the proximal and distal ends, the lumen sized to permit the longitudinal advancement of the infusion catheter therethrough; and
a venous return sheath having proximal and distal ends and a lumen extending therebetween, the venous return sheath in fluid communication with the lumen of the emboli removal catheter and is adapted to be disposed in a patient'"'"'s venous system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. Apparatus suitable for treating an occlusion adhered to a vessel wall, the apparatus comprising:
-
an infusion catheter having proximal and distal ends and a lumen extending therebetween, an atraumatic tip disposed at the distal end, and at least one delivery port disposed proximal of the atraumatic tip in fluid communication with the lumen; and
a centering device having proximal and distal ends and a lumen extending therebetween, the centering device comprising a plurality of deployable struts disposed at the distal end, the lumen adapted to permit the infusion catheter to pass therethrough, wherein the infusion catheter is configured to infuse fluid into the occlusion so that the fluid reduces adhesion of the occlusion to an intima of the vessel wall. - View Dependent Claims (15, 16, 18, 19, 20, 21, 22)
-
-
17. The apparatus of 14 wherein the deployable struts comprise a nickel-titanium alloy.
-
23. A method for treating an occlusion adhered to a vessel wall, the method comprising:
-
providing an infusion catheter having proximal and distal ends, a lumen extending therebetween, an atraumatic tip disposed at the distal end, and at least one delivery port disposed proximal of the atraumatic tip in fluid communication with the lumen;
providing a centering device having proximal and distal ends, a lumen extending therebetween, and a plurality of deployable struts disposed at the distal end in a contracted state;
positioning the centering device at a location proximal of the occlusion;
deploying the plurality of deployable struts; and
advancing the infusion catheter through the lumen of the centering device to advance the atraumatic tip through the occlusion;
positioning the delivery port at a desired location within the occlusion; and
infusing fluid into the occlusion via the delivery port so that the fluid reduces adhesion of the occlusion to an intima of the vessel wall. - View Dependent Claims (24, 25, 26, 27, 28)
-
-
29. A method for treating an occlusion adhered to a wall of a patient'"'"'s vessel, the method comprising:
-
providing an emboli removal system having a proximal end adapted to be inserted in a patient'"'"'s venous system, distal end including an occlusive element, and a lumen extending between the proximal and distal ends;
providing an infusion catheter having proximal and distal ends, a lumen extending therebetween, an atraumatic tip disposed at the distal end, and at least one delivery port disposed proximal of the atraumatic tip in fluid communication with the lumen;
advancing the distal end of the emboli removal system through the vessel to a position proximal of the occlusion;
deploying the occlusion element to occlude antegrade flow through the vessel;
inserting the proximal end of the emboli removal system into the patient'"'"'s venous system;
advancing the infusion catheter so that the atraumatic tip penetrates the occlusion;
positioning the delivery port at a desired location within the occlusion;
infusing fluid into the occlusion via the delivery port to reduce adhesion of the occlusion to an intima of the vessel wall, dislodge the occlusion and generate emboli;
aspirating emboli-laden blood through the emboli removal system;
filtering emboli-laden blood aspirated through from the vessel to remove emboli; and
re-infusing filtered blood into the patient'"'"'s venous system. - View Dependent Claims (30, 31, 32, 33, 34, 35)
-
Specification