Method and device for enhancing vessel occlusion
First Claim
Patent Images
1. A lumen occlusion system, comprising:
- a source of high frequency electrical energy;
an introducer having a shaft with proximal and distal ends and an axial lumen therebetween;
a positioner disposed within the axial lumen and having a shaft and a distal engaging element for contacting a vaso-occlusive element at a target site within a body lumen, the distal engaging element comprising a first electrode coupled to the source of high frequency electrical energy; and
a second electrode coupled to the source of high frequency electrical energy wherein the distal engaging element has an opened and closed configuration, and the positioner is slidable relative to the introducer to close the distal engaging element when the distal engaging element is unconfined outside the axial lumen of the introducer.
2 Assignments
0 Petitions
Accused Products
Abstract
Body lumens such as blood vessels are selectively occluded by applying radiofrequency voltage to a vaso-occlusive coil (100) at the target site (TS) and generating a thermal reaction to induce fibrogenic occlusion of the blood vessel (BV) around the vaso-occlusive coil. The radiofrequency current is usually sufficient to induce thermal damage to the luminal wall and to coagulate the surrounding blood, thereby initiating clotting and subsequent fibrosis to permanently occlude the lumen. The invention also includes a method for endoluminally deploying the vaso-occlusive coil and preventing migration of the coil from of the target site.
135 Citations
19 Claims
-
1. A lumen occlusion system, comprising:
-
a source of high frequency electrical energy;
an introducer having a shaft with proximal and distal ends and an axial lumen therebetween;
a positioner disposed within the axial lumen and having a shaft and a distal engaging element for contacting a vaso-occlusive element at a target site within a body lumen, the distal engaging element comprising a first electrode coupled to the source of high frequency electrical energy; and
a second electrode coupled to the source of high frequency electrical energy wherein the distal engaging element has an opened and closed configuration, and the positioner is slidable relative to the introducer to close the distal engaging element when the distal engaging element is unconfined outside the axial lumen of the introducer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. The system of claim wherein the source of radiofrequency energy is configured to apply radiofrequency energy at a frequency of at least 200 kHz to the vaso-occlusive element.
-
10. A lumen occlusion system, comprising:
-
a source of high frequency electrical energy;
an introducer having a shaft with proximal and distal ends and an axial lumen therebetween;
a positioner disposed within the axial lumen and having a shaft and a distal engaging element for contacting a vaso-occlusive element at a target site within a body lumen, the distal engaging element comprising a first electrode coupled to the source of high frequency electrical energy; and
a second electrode coupled to the source of high frequency electrical energy;
wherein the distal engaging element comprises a plurality of opposed members movable between open and closed positions, at least one of the opposed members comprising the first electrode. - View Dependent Claims (11, 12)
-
-
13. A lumen occlusion device for use with a source of high frequency electrical energy comprising:
-
an introducer having a shaft with proximal and distal ends and an axial lumen therebetween;
a positioner slidably disposed within the axial lumen and having a distal engaging element for releasably engaging an electrically conductive vaso-occlusive element at a target site within a body lumen, the distal engaging element comprising an electrode; and
an electrical conductor for coupling the electrode to the source of high frequency electrical energy wherein the distal engaging element has an opened and closed configuration, and the positioner is slidable relative to the introducer to close the distal engaging element when the distal engaging element is unconfined outside the axial lumen of the introducer. - View Dependent Claims (14, 15, 16, 17, 18, 19)
-
Specification