DR. MARWAN RIAD TABBARA, M.D.
Radiology in Fort Lauderdale, FL

2011000, Jan 13, 2011

Jul 7, 2010

12/831361

Marwan Tabbara - Miami FL, US

A61M 1/00, A61M 25/00

604 8, 606108

Methods, devices, and kits for creating bloodstream access in patients are provided. A patient's vessel is accessed surgically and blood flow is stopped. A short incision is made through the wall of one side of the vessel where the blood flow was stopped. A puncturing instrument is pushed through the incision across the lumen and through the vessel wall at a site opposite the incision. After the puncturing instrument is removed, a vessel wall traversing device which can be shaped like a blunt-ended nail with a hollow shank and a head of a larger diameter than the shank is inserted in the puncture hole blunt end first such that the shank traverses the puncture hole with the blunt end being positioned exterior to the outer surface of the vessel and the head of the device abutting inner surface of the vessel at the puncture hole. The portion of the shank that projects outwards from the vessel wall is connected to one end of a flexible cannula, and the other end of the cannula is passed through the surrounding tissue such that the end of the cannula opposite the vessel wall traversing device protrudes through the skin of the patient. A portion of the cannula protruding from the patient is clamped off, the incision is closed, and blood flow is restored to the vessel. Blood within the vessel is than accessible via the portion of the cannula protruding from the patient.

2010010, Apr 29, 2010

Oct 23, 2009

12/604988

Marwan Tabbara - Miami FL, US

A61M 25/00

606108

Devices and techniques for establishing button-hole openings in arteriovenous fistula (or other target site located in the interior of a subject's body), without requiring the same nurse or technician to prepare the patient in the first several sessions, utilizing or encompassing a first button-hole forming device including in sequence: an external connection component; a scar-tissue forming component; and an indwelling cannula component. The first button-hole forming device has a lumen running through the longitudinal axis of the tube such that blood can be transported therethrough to or from the fistula (or other target site located in the interior of a subject's body) to a hemodialysis machine or other device. The devices and techniques also utilize or encompass a support device for supporting the first button-hole forming device at a constant angle relative to the plane formed by the subject's skin proximate to the fistula (or other target site located in the interior of a subject's body) when the first button-hole forming device is secured to the subject's body with the indwelling cannula component inserted into the fistula (or other target site located in the interior of a subject's body) such that a stable button-hole opening can be formed in a patient.