Patent EA-004287-B1 (EA)
Title: Retrievable self-expanding shunt
Inventor: AMPLATZ KURT
IPC: A61F2/90
Filed: 2001-03-12
Abstract: 1. A collapsible medical device, comprising a metal fabric including a plurality of woven metal strands having a proximal end and a distal end, each end having means for securing the metal fabric attached thereto, thereby inhibiting unraveling of the metal fabric, the means for securing further including means adapted for attachment to a delivery device, said metal fabric having a relaxed configuration having two enlarged diameter portions and a central portion disposed between the two enlarged diameter portions wherein said central portion includes a passageway for conducting a body fluid extending between and through an outer surface of each of said two enlarged diameter portions, said device further having a collapsed configuration for delivery through a channel in a patient's body. 2. The medical device according to claim 1, wherein a center axis of at least one of said enlarged diameter portions is offset from a center axis of said center portion. 3. The medical device according to claim 1, wherein a center axis of a least one of said enlarged diameter portions is aligned with a center axis of said center portion. 4. The medical device according to claim 1, wherein a center axis of each of said enlarged diameter portions is aligned along the same longitudinal axis. 5. The medical device according to claim 1, wherein a center axis of each of said enlarged diameter portions is aligned with a center axis of said center portion. 6. The medical device according to claim 1, wherein a separation distance between the two enlarged diameter portions is less than a separation distance between a portal vein and hepatic vein. 7. The medical device according to claim 1, wherein means for securing metal fabric with the possibility of attachment to a delivery device. 8. The medical device according to claim 1, wherein said device is formed from a metal fabric consisting of a plurality of woven metal strands. 9. The medical device according to claim 1, wherein said means for securing is at least partially recessed below the outer surface of said enlarged diameter portion. 10. The medical device according to claim 1, further including at least two central portions disposed between the two enlarged diameter portions. 11. A collapsible medical device, comprising a metal fabric including a plurality of woven metal strands having a proximal end and a distal end, each end having a securing member attached to the metal fabric, thereby inhibiting unraveling of the metal fabric, the securing member including a threaded bore for attachment to a delivery device, said metal fabric having a relaxed configuration having two enlarged diameter portions and a central portion disposed between the two enlarged diameter portions wherein said central portion includes a passageway for conducting a body fluid extending between and through an outer surface of each of said two enlarged diameter portions, said device further having a collapsed configuration for delivery through a channel in a patient's body. 12. The medical device according to claim 11, wherein a center axis of at least one of said enlarged diameter portions is offset from a center axis of said center portion. 13. The medical device according to claim 11, wherein a center axis of a least one of said enlarged diameter portions aligns with a center axis of said center portion. 14. The medical device according to claim 11, wherein a center axis of each of said enlarged diameter portions is aligned along the same longitudinal axis. 15. The medical device according to claim 11, wherein a center axis of each of said enlarged diameter portions is aligned with a center axis of said center portion. 16. The device according to claim 11, wherein a separation distance between the two enlarged diameter portions is less than a separation distance between a portal vein and hepatic vein. 17. The medical device according to claim 11, wherein clamping element for attaching with metal fabric is made with the possibility for attachment to a delivery device. 18. The medical device according to claim 11, wherein device is formed from a metal fabric consisting of a plurality of woven metal strands. 19. The medical device according to claim 11, wherein clamping element for attaching of metal fabric is at least partially recessed below the outer surface of said enlarged diameter portion. 20. A collapsible medical device, comprising a metal fabric including a plurality of woven metal strands having a proximal end and a distal end, each end having a securing member attached to the metal fabric, thereby inhibiting unraveling of the metal fabric, at least one of said securing means including means for attachment to a delivery device, said metal fabric having a relaxed configuration having two enlarged diameter portions and a central portion disposed between the two enlarged diameter portions, wherein a separation distance between the two enlarged diameter portions is less than a separation distance between a portal vein and hepatic vein, said central portion includes a passageway for conducting a body fluid extending between and through an outer surface of each of said two enlarged diameter portions, said device further having a collapsed configuration for delivery through a channel in a patient's body. 21. The medical device according to claim 20, wherein a center axis of at least one of said enlarged diameter portions is offset from a center axis of said center portion. 22. The medical device according to claim 20, wherein a center axis of a least one of said enlarged diameter portions is aligned with a center axis of said center portion. 23. The medical device according to claim 20, wherein a center axis of each of said enlarged diameter portions is aligned along the same longitudinal axis. 24. The medical device according to claim 20, wherein a center axis of each of said enlarged diameter portions is aligned with a center axis of said center portion. 25. The medical device according to claim 20, wherein clamping element for attaching with metal fabric is made with the possibility for attachment to a delivery device. 26. The medical device according to claim 20, wherein said device is formed from a metal fabric consisting of a plurality of woven metal strands. 27. The device according to claim 20, wherein said means for securing is at least partially recessed below the outer surface of said enlarged diameter portion.