| 摘要 |
<p>PURPOSE:To provide a living body duct dilatation tool as a prosthesis which is composed of a shape memory alloy and also can surely be rested in a place in each duct organ. CONSTITUTION:A tool is equipped with tube 4 insertible into each duct organ of a living body, a prosthesis 3 which is inserted into the tube 4, and with a pusher 5 which pushes the prosthesis 3 out of the tip end of the tube 4. After the prosthesis 3 has been pushed in the inside of each duct organ out of the tip end of the tube 4, it is formed into a coil shape by the use a shape memory alloy which is restored into a dilated shape.</p> |
