Intravascular device

Abstract

A multi-element occlusion device (10, 20, 30, 40) provides an improvement over existing systems by increasing the occupation of a vascular lumen. The device (10, 20, 30) comprises an anchoring element (12, 22, 32), a lead element (14, 24, 34) and at least one fiber (16, 26, 36) attaching said elements. The elements and fibers produce a cumulative occlusive effect greater than the sum of the individual elements. When placed in the blood stream, the anchoring element (12, 22, 32) lodges against the vessel wall and the lead element (14, 24, 34) is carried to a position distal thereto. In another embodiment, an “umbrella” of support members extend from the lead element. A fabric web extends between these support members. The umbrella intravascular device expands upon its exit from the catheter. The fabric web produces complete occlusion of the vessel without the need for thrombosis to form between the elements. With the use of multi-element deployment, the device decreases the risk of continued canalization and recanalization.

Description

[0001]More than one reissue application has been filed for the reissue of U.S. Pat. No. 5,925,062. The prior reissue application is application Ser. No. 09 / 909,662, filed Jul. 19, 2001 now U.S. Pat. No. Re. 38,972. This application is a divisional of prior application Ser. No. 09 / 909,662.[0002]This is a divisional of application Ser. No. 08 / 662,845 filed Jun. 12, 1996 now U.S. Pat. No. 5,693,067 which is a divisional of application Ser. No. 08 / 164,398 filed Dec. 9, 1993 now U.S. Pat. No. 5,527,338, which is a continuation-in-part of application Ser. No. 07 / 939,296 filed Sep. 2, 1992 now U.S. Pat. No. 5,443,478. The entire text of each of the above-referenced disclosures is specifically incorporated by reference herein without disclaimer.[0003]The present application is a continuation-in-part of application Ser. No. 07 / 939,296, filed on Sep. 2, 1992, and entitled “Multi-Element Intravascular Occlusion Device.”FIELD OF THE INVENTION[0004]This invention relates to devices for placement...

AI Technical Summary

Benefits of technology

[0015]The present invention relates to a multi-element intravascular occlusion device comprising at least one lead element attached to at least one anchoring element by at least one fiber. The lead element can be either a particle or a coil. Likewise, the anchoring element can be either a particle or a coil. Interference of flow created by the fiber linking the elements will exceed the sum of the effect of the separate elements. Instead of clotting on a single particle or coil, the blood clots around each part of the device. The resulting occlusion is deeper and thus decreases the risk of continued canalization or recanalization.

[0016]The present invention will also save time and money. Instead of requiring the placement of several coils or particles to achieve occlusion, the device allows a more rapid occlusion with fewer deployments. The device can be placed into a vessel by conventional means to create thrombosis and thereby occlude continued blood flow.

[0024]In another embodiment, the trailing element may function only to assist in detachment of the lead element. Alternatively, the trailing element may even detach from the lead element allowing more precise localization of the lead element without requiring that the trailing element be deposited in the vessel with the lead element.

Problems solved by technology

The resulting occlusion is deeper and thus decreases the risk of continued canalization or recanalization.

Typically, the size will be limited by the catheter used to place the occlusion device.

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