SURGICAL DEVICE FOR THE TEMPORARY PROTECTION OF ANASTOMOSIS

摘要

A surgical device for temporary protection of an anastomosis in the colon, the rectum, or the anal passage, including: a semi-rigid hollow longitudinal temporary anchor element, a first wall of which includes a substantially cylindrical main portion with a substantially circular section having a length of at least 50 mm, the first wall having an outside diameter that may be varied in a controlled manner; and a flexible sheath fixed to the anchor element against, preferably around, the first wall and having a length downstream of the anchor element of at least 50 cm, and an outside diameter when at rest in the range 20 mm to 40 mm, and the sheath is made from a biocompatible elastomer material having a wall thickness in the range 0.05 mm to 1 mm.

主权项

1. A method of providing temporary protection of an anastomosis in a large intestine or colon, rectum, or anal passage, the method comprising:
introducing a surgical device per anum, the surgical device comprising: a semi-rigid hollow longitudinal temporary anchor element, a first wall of which defines a surface of revolution about a longitudinal axis, including a substantially cylindrical main portion with a substantially circular section, and said first wall having an outside diameter that may be varied in a controlled manner between: a reduced outside diameter in a radially retracted configuration of said first wall; and an outside diameter in a radial expanded configuration of the cylindrical main portion of said first wall; said outside diameter of the anchor element being greater than or equal to a resting diameter of a wall of said large intestine or colon in the absence of intestinal transit, and lower than a dilated diameter of the wall of said large intestine or colon upon resumption of the intestinal transit so that said anchor element is capable of remaining temporarily fixed to the wall of said large intestine or colon in the absence of intestinal transit by radial expansion force of the anchor element against the wall of said large intestine or colon; and a sheath having a flexible tubular wall permanently fixed against said first wall of said anchor element; routing said device as far as an anchor site upstream of the anastomosis, the anchor element being retained in said radially retracted configuration during such routing; and enabling said anchor element to adopt an anchor position against the wall of said large intestine or colon in said radially expanded configuration, said anchor position being such that said sheath covers said anastomosis downstream of said anchor element once said anchor element adopts such anchor position, wherein said surgical device is capable of releasing from said wall of said large intestine or colon and migrating along said wall of said large intestine or colon by sliding in contact with the wall said wall of said large intestine or colon after resumption of the intestinal transit.