Vascular graft device

A vascular graft device comprising:

• a semi permeable inner wall surrounding a passage;
• a nonpermeable outer wall surrounding the inner wall and sealed to the inner wall at first and second ends of the graft device such that the graft device is generally tubular in shape, the graft device being configured for access by a needle and being longitudinally flexible and the first and second ends of the graft device each being configured for suturing to at least one blood vessel;
• and
• a biological agent disposed between the inner and outer walls at least near the first and second ends for release through the inner wall radially inwardly in a circular fashion at least near the first and second ends for treating suture points joining the at least one blood vessel at the first and second ends.

A vascular graft device comprising:

• an inner wall surrounding a passage;
• an outer wall surrounding the inner wall with a gap there between;
• a biological agent disposed between the inner and outer walls capable of being released;
• and
• an inner graft member positioned within the passage of the inner wall, the inner graft member having first and second ends extending beyond the inner and outer walls for suturing to at least one blood vessel.

A method of forming a vascular graft device comprising:

• providing a semi permeable inner wall surrounding a passage;
• surrounding the inner wall with a nonpermeable outer wall, the graft device being configured for access by a needle and being longitudinally bendable and having first and second ends, the inner and outer walls being sealed to each other at the first and second ends, forming an annular gap between the inner and outer walls, the first and second ends each being configured for suturing to at least one blood vessel;
• and
• disposing a biological agent between the inner and outer walls for release through the inner wall radially inwardly in a circular fashion at least near the first and second ends for treating suture points joining the at least one blood vessel at the first and second ends.

A method of limiting occlusion in a vascular graft device comprising:

• providing the vascular graft device with a semi permeable inner wall surrounding a passage;
• surrounding the inner wall with a nonpermeable outer wall, the graft device being configured for access by a needle and being longitudinally bendable and having first and second ends, the inner and outer walls being sealed to each other at the first and second ends, forming an annular gap between the inner and outer walls, the first and second ends each being configured for suturing to at least one blood vessel;
• and
• disposing a biological agent between the inner and outer walls for time release through the inner wall radially inwardly in a circular fashion at least near the first and second ends for treating suture points joining the at least one blood vessel at the first and second ends, the time release of the biological agent for limiting occlusion over a period of time.