Vascular shunt graft and junction for same

A junction device adapted for implantation within a blood vessel to direct blood flow between a first stream of blood and a second stream of blood, the device comprising

• a connector having an interior and being adapted to be inserted within a blood vessel, and a conduit in fluid communication with the connector to connect the first and second streams of blood;
• the connector being adapted to be inserted into the blood vessel in a contracted state and then be enlarged in place to form a tight fit within the blood vessel so as to direct blood flow through the interior of the junction device;
• the connector being adapted to exit the blood vessel through an opening formed in the blood vessel to connect the second stream of blood with the blood vessel;
• means attached to the conduit to permit the opening in the blood vessel to be sealed around the conduit without requiring formation of punctures through the junction device into the interior;
• and
• wherein at least the connector consist of fluoropolymer material that is self-supporting in an enlarged state to form a tight fit within the blood vessel without the need for separate anchoring means within the blood vessel, the connector undergoing less than a 10% foreshortening in overall length when it is enlarged from the contracted state to the enlarged state.

A junction device for connecting a first blood stream and a second blood stream, the device having an interior through which blood flows, the device comprising

• a connector adapted to be inserted within a blood vessel through which the first blood stream flows, and a conduit in fluid communication with the connector adapted to merge blood flow from the second blood stream into the first blood stream;
• the connector adapted to be inserted into the blood vessel in a contracted state and then be enlarged in place to form a tight fit within the blood vessel so as to direct blood flow through the interior of the junction device;
• and
• the connector being adapted to exit the continuous blood vessel through an opening formed in the blood vessel to connect to the second blood stream;
• the conduit is attached to the connector at an angle;
• the junction device includes a primary impact area within the connector comprising an area on an interior wall of the connector opposite the conduit;
• wherein the junction device is constructed from a continuous material that completely covers the blood vessel at least over the primary impact area;
• and
• wherein the junction device includes means to seal the opening in the blood vessel around the conduit without sutures penetrating into the interior of the junction device.

A junction device having an interior and adapted for implantation within a blood vessel, the device comprising

• a connector adapted to be inserted into the blood vessel in a contracted state and then be enlarged in place to form a tight fit within the blood vessel so as to direct blood flow through the interior of the junction device;
• a conduit attached to the connector, the conduit adapted to exit the blood vessel through an opening formed in the blood vessel to connect to a stream of blood;
• and
• means surrounding the conduit to permit the opening in the blood vessel to be sealed around the conduit without requiring formation of punctures through the junction device into the interior.