Method and device for enhancing vessel occlusion
AssigneeRadiotherapeutics Corporation
InventorThomas Palermo
Life of this patent
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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.
Claims17
A method for enhancing occlusion of a body lumen having at least one electrically conductive, vaso-occlusive element deployed at a target site therein, the method comprising:
- contacting the vaso-occlusive element with a first electrode, wherein the vaso-occlusive element was previously deploved;
- contacting the patient's body with a second electrode;
- and
- applying high frequency electrical energy to the first electrode, through at least a portion of the vaso-occlusive element, through fluid or tissue at the target site and to the second electrode.
A method for enhancing occlusion of a body lumen having at least one electrically conductive, vaso-occlusive element deployed at a target site therein, the method comprising:
- applying high frequency electrical energy to and through at least a portion of the vaso-occlusive element into a luminal wall to thermally damage said wall and to initiate thrombosis and fibrosis, wherein the vaso-occlusive element had been deployed at the target site before applying the high frequency electrical energy;
- advancing an RF device through the lumen to the target site;
- and
- engaging at least one electrode on the RF device against the vaso-occlusive element which has already been deployed.
A method for occluding a body lumen comprising:
- positioning at least one electrically conductive, vaso-occlusive element at a target site within the body lumen, wherein the positioning step comprises adjusting a position of a previously deployed vaso-occlusion element within the target site;
- and
- applying sufficient high frequency electrical energy to the vaso-occlusive element to generate a thermal reaction at the target site, while said electrically conductive, vaso-occlusive element remains in place at the target site and wherein the thermal reaction induces thrombosis to hold the element in place.
Dependencies are inferred from the claim text.