Sleeve type fixing method and device for anastomosis for tubular organs such as intestines, stomach, esophagus etc

A sleeve type fixing device for anastomosis for a tubular organ, comprising:

• an inner ring on which a first end of the tubular organ is sleevable;
• and
• an outer ring that is made of an elastic material and is reversible, the outer ring having a first rim and a second rim, the second rim being movable inward through the outer ring during the reversion, such that when a second end of the tubular organ is sewed to an outer side of the outer ring before the reversion, the first rim is wrapped by the tubular organ after the reversion, wherein
• the reversed outer ring and inner ring are fixable to each other, and are configured to be both on an inner side of the tubular organ when fixed during the anastomosis;
• the inner ring has an anastomose portion, an insertion portion and a connecting portion connecting the anastomose portion and the insertion portion, a diameter of the connecting portion being smaller than that of the insertion portion and that of the anastomose portion;
• said insertion portion of said inner ring is provided with axial grooves;
• and
• the insertion portion has barbs formed on a bottom thereof.