Tubular tissue preparation device, tubular tissue preparation kit, and tubular tissue preparation method

A tubular tissue preparation method involving the use of a tubular tissue preparation device comprising:

• a chamber for accommodating a tubular support;
• a first support for allowing the inside and outside of the chamber to communicate with each other and for securing the tubular support;
• and a pressure increasing/decreasing means for controlling the pressure of an internal space of the chamber, wherein the method comprises the steps of:
• (1) securing a first opening of the tubular support to the first support so that the lumen of the tubular support and the outside of the chamber are in communication,
• (2) separating the lumen of the tubular support from the internal space of the chamber,
• (3) expanding the tubular support by reducing the pressure of the internal space of the chamber with the pressure increasing/decreasing means, and
• (4) attaching the sheet-like tissue to an inner wall of the tubular support by inserting a sheet-like tissue transfer device supporting a sheet-like tissue through an external end opening of the first support.