抄録
Ulcerative changes and stenotic lesions in the cervical portion of the carotid artery are being noted as lesions responsible for the development of TIA and RIND. As a result thromboendarterectomy of the carotid artery is recently being actively performed to prevent stroke. The authors' device for this operation is presented.
The device consists of T-shaped internal shunt tubes, two angled bulldog clamps and a retractor. The T-shaped internal shunt tubes are made of polyvinyl chloride (PVC) material. PVC is the most appropriate material for the tube, because it is flexible and does not kink. We made tubes with three different outer diameter sizes and in the same lengths of 30 cm. A side arm mainly to check the patency of the blood flow was also designed in the middle of the tube. Bulbs with smooth surface were provided at both ends so that the intima would not be injured and to prevent the tube from slipping out of the vessel. From the differences in diameter of the common and internal carotid arteries, the tube on the proximal side was provided with a bulb 1-2 mm larger than its distal side and was colored so as to make it easy to distinguish. To permit easy insertion and removal of the tube and its fixation to the vessel, small bulldog-like clamps with jaws angled at a 30° were used. The ringed jaws were provided in three sizes so as to fit the three different outer diameter tubes. To date endarterectomies have been performed with satisfactory results and without complications.
