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.

1. An intravascular device for use with a catheter having a detachment apparatus, said device comprising:
 at least one lead element; and    a trailing element detachably interconnected to at least one said lead element, said trailing element adapted for attachment to said detachment apparatus;    wherein said at least one lead element is structured to cause occlusion of a vessel.    
     
     
       2. The intravascular device of  claim 1 , wherein said at least one lead element comprises a material capable of producing thrombosis. 
     
     
       3. The intravascular device of  claim 1 , wherein said at least one lead element comprises an expansible element. 
     
     
       4. The intravascular device of  claim 1 , wherein said at least one lead element comprises a particle. 
     
     
       5. The intravascular device of  claim 1 , wherein said at least one lead element comprises a coil. 
     
     
       6. The intravascular device of  claim 1 , wherein said trailing element is chemically detachable from said at least one lead element. 
     
     
       7. The intravascular device of  claim 1 , wherein said trailing element is mechanically detachable from said at least one lead element. 
     
     
       8. The intravascular device of  claim 1 , wherein said at least one lead element functions as an anchoring element. 
     
     
       9. The intravascular device of  claim 1 , further comprising a fiber detachably interconnecting said at least one lead element and said trailing element. 
     
     
       10. The intravascular device of  claim 1 , wherein the end of said detachment apparatus has the shape of a loop, and wherein said trailing element comprises a hook adapted to engage said loop. 
     
     
       11. The intravascular device  claim 10 , wherein said at least one lead element comprises a coil. 
     
     
       12. An intravascular device comprising:
 at least one lead element;    a trailing element; and    a fiber detachably interconnecting the trailing element to said at least one lead element;    wherein said at least one lead element is capable of causing occlusion of a vessel.    
     
     
       13. The intravascular device of  claim 12 , wherein said at least one lead element comprises a material capable of producing thrombosis. 
     
     
       14. The intravascular device of  claim 12 , wherein said at least one lead element comprises a coil. 
     
     
       15. The intravascular device of  claim 12 , wherein said at least one lead element functions as an anchoring element. 
     
     
       16. An intravascular device for use with a catheter having a detachment apparatus, said device comprising:
 at least one lead element;    a trailing element; and    a fiber detachably interconnecting the trailing element to said at least one lead element;    wherein said at least one lead element is capable of causing occlusion of a vessel, and wherein said trailing element is adapted for attachment to said detachment apparatus.    
     
     
       17. The intravascular device of  claim 16 , wherein said at least one lead element comprises a material capable of producing thrombosis. 
     
     
       18. The intravascular device of  claim 16 , wherein said at least one lead element comprises a coil. 
     
     
       19. The intravascular device of  claim 16 , wherein said at least one lead element functions as an anchoring element. 
     
     
       20. The intravascular device of  claim 16 , wherein the end of said detachment apparatus has the shape of a loop, and wherein said trailing element comprises a hook adapted to engage said loop. 
     
     
       21. The intravascular device of  claim 20 , wherein said at least one lead element comprises a coil. 
     
     
       22. A method for producing occlusion of a vessel or an aneurysm, including:
   providing an intravascular device having a lead element, and a trailing element connected by a non - metallic member to the lead element;        providing a detachment apparatus engaging the trailing element of the intravascular device;        providing an introducing catheter with a distal end;        inserting the introducing catheter into the vessel or aneurysm such that the distal end is adjacent to a desired deployment location;        inserting the intravascular device into the introducing catheter;        positioning the intravascular device at a position to occlude at least a portion of the vessel or the aneurysm; and        disengaging the intravascular device from the detachment apparatus.     
     
     
       23. The method of  claim 22 , wherein the non- metallic member is a synthetic member.   
     
     
       24. A method for producing occlusion of a vessel or an aneurysm, including;
   providing an intravascular device having a lead element, and a non - spherical trailing element connected to the lead element;        providing a detachment apparatus engaging the non - spherical trailing element of the intravascular device;        providing an introducing catheter with a distal end;        inserting the introducing catheter into the vessel or aneurysm such that the distal end is near a desired deployment location;        inserting the intravascular device into the introducing catheter;        positioning the intravascular device to occlude at least a portion of the vessel or the aneurysm; and        disengaging the intravascular device from the detachment apparatus.     
     
     
       25. The method of  claim 24 , wherein the lead element is connected to the non- spherical trailing element by a non - metallic member.   
     
     
       26. The method of  claim 25 , wherein the non- metallic member is a synthetic member.   
     
     
       27. A method for producing occlusion of a vessel or an aneurysm, including:
   providing an intravascular device having a bioactive lead element, and a trailing element connected to the bioactive lead element;        providing a detachment apparatus engaging the trailing element of the intravascular device;        providing an introducing catheter with a distal end;        inserting the introducing catheter into the vessel or aneurysm such that the distal end is near a desired deployment location;        inserting the intravascular device into the introducing catheter;        positioning the intravascular device to occlude at least a portion of the vessel or the aneurysm; and        disengaging the intravascular device from the detachment apparatus.     
     
     
       28. The method of  claim 27 , wherein the bioactive lead element is connected to the trailing element by a non- metallic member.   
     
     
       29. A method for producing occlusion of a vessel or an aneurysm, including:
   providing an intravascular device having a lead element, and a trailing element comprising a coil connected to the lead element;        providing a detachment apparatus engaging the trailing element of the intravascular device;        providing an introducing catheter with a distal end;        inserting the introducing catheter into the vessel or aneurysm such that the distal end is near a desired deployment location;        inserting the intravascular device into the introducing catheter;        positioning the intravascular device to occlude at least a portion of the vessel or the aneurysm; and        disengaging the intravascular device from the detachment apparatus.     
     
     
       30. The method of  claim 29 , wherein the lead element is connected to the trailing element by a non- metallic member.   
     
     
       31. The method of  claim 30 , wherein the non- metallic member is a synthetic member.   
     
     
       32. A method for producing occlusion of a vessel or an aneurysm, including:
   providing an intravascular device having a lead element, and a trailing element connected to the lead element, the trailing element being configured to anchor the intravascular device within the vessel or aneurysm;        providing a detachment apparatus engaging the trailing element of the intravascular device;        providing an introducing catheter with a distal end;      inserting the introducing catheter into the vessel or aneurysm such that the distal end is near a desired deployment location;    inserting the intravascular device into the introducing catheter;    positioning the intravascular device to go occlude at least a portion of the vessel or the aneurysm; and    disengaging the intravascular device from the detachment apparatus.   
     
     
       33. The method of  claim 32 , wherein the lead element is connected to the trailing element by a non- metallic member.   
     
     
       34. The method of  claim 33 , wherein the non- metallic member is a synthetic member.