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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0840211 (1992-02-24) |
| 발명자 / 주소 |
|
| 출원인 / 주소 |
|
| 인용정보 | 피인용 횟수 : 450 인용 특허 : 0 |
An artery, vein, aneurysm, vascular malformation or arterial fistula is occluded through endovascular occlusion by the endovascular insertion of a platinum wire and/or tip into the vascular cavity. The vascular cavity is packed with the tip to obstruct blood flow or access of blood in the cavity suc
An artery, vein, aneurysm, vascular malformation or arterial fistula is occluded through endovascular occlusion by the endovascular insertion of a platinum wire and/or tip into the vascular cavity. The vascular cavity is packed with the tip to obstruct blood flow or access of blood in the cavity such that the blood clots in the cavity and an occlusion if formed. The tip may be elongate and flexible so that it packs the cavity by being folded upon itself a multiple number of times, or may pack the cavity by virtue of a filamentary or fuzzy structure of the tip. The tip is then separated from the wire mechanically or by electrolytic separation of the tip from the wire. The wire and the microcatheter are thereafter removed leaving the tip embedded in the thrombus formed within the vascular cavity. Movement of wire in the microcatheter is more easily tracked by providing a radioopaque proximal marker on the microcatheter and a corresponding indicator marker on the wire. Electrothrombosis is facilitate by placing the ground electrode on the distal end of the microcatheter and flowing current between the microcatheter electrode and the tip.
A method for forming an occlusion within a vascular cavity having blood disposed therein comprising the steps of: endovascularly disposing a relaxed coil wire near an endovascular opening into said vascular cavity, said relaxed coil wire having no substantial memory of its predisposed shape other th
A method for forming an occlusion within a vascular cavity having blood disposed therein comprising the steps of: endovascularly disposing a relaxed coil wire near an endovascular opening into said vascular cavity, said relaxed coil wire having no substantial memory of its predisposed shape other than at most a relaxed, simple helical shape; disposing a distal tip of said wire into said vascular cavity to substantially space fill said cavity to mechanically form said occlusion within said vascular cavity about said distal tip; and nonthermally detaching said distal tip from said wire to leave said distal tip within said vascular cavity, wherein nonthermal detachment is defined as a detachment without substantially increasing the temperature of said distal tip and wire, whereby said vascular cavity is occluded by said distal tip, and any thrombus formed by use of said tip.
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