Bypass configuration and method of construction

摘要

A method for constructing a vascular connector configured to bypass an occluded vessel which comprises a primary graft stem and a venous outflow stem. In general, the primary graft stem accepts a blood flow from an occluded vessel to bypass the occlusion. The venous outflow stem may extend from a wall of the primary graft stem and divert a portion of the blood flow to a native vein or other vessel of the vascular system. This configuration is beneficial in ensuring adequate blood flow at the vascular connector to inhibit the formation of clots and to extend the patency of the vascular connector.

主权项

1. A method for constructing a vascular bypass graft comprising:
providing a first tubular segment having a first tubular segment internal passage having a diameter configured for fluid flow, the first tubular segment having a distal end with a distal end opening and a proximal end with a proximal end opening, the distal end opening and the proximal end opening accessing the first tubular segment internal passage; providing a second tubular segment having an second tubular segment internal passage configured for fluid flow, the second tubular segment having a distal end with a distal end opening and a proximal end with a proximal end opening, the distal end opening and the proximal end opening accessing the second tubular segment internal passage, and the second tubular segment having a diameter that is less than a diameter of the first tubular segment; forming an opening completely contained in a side wall of the first tubular segment near but inward from and not touching the proximal end of the first tubular segment; preparing the distal end and the proximal end of the first tubular segment to be capable of surgical attachment to a first blood vessel; preparing the distal end of the second tubular segment to be capable of surgical attachment to second blood vessel; preparing the proximal end of the second tubular segment to be capable of surgical attachment to the first tubular segment; and attaching the proximal end of the second tubular segment to cover the opening in the first tubular segment such that the inner passage of the second tubular segment is aligned with the opening to thereby form a fluid pathway from the first tubular segment to the second tubular segment that is separate from the proximal end opening in the first tubular segment.