Patent ID: 6162236
Filing Date: 2000-12-19
Classification: A61B

Abstract:
A trocar tube comprising a tubular portion and a grip attached to a rear end of said tubular portion, the grip having an insertion opening, and said tubular portion being smaller in diameter at a front end than at the rear end in an original state of the trocar tube, and said tubular portion being constructed so that a front end portion of said tubular portion is expandable from an original diameter in the original state when a device having an outside diameter greater than an inside diameter of said front end of said tubular portion is inserted into the tubular portion by way of the insertion opening, said tubular portion of said trocar tube comprising a plurality of strips and an elastic tube, the strips being arranged substantially in a cone shape which becomes gradually smaller in outside diameter from a rear end to a front end, the strips each having an outside surface and a pair of sides, the elastic tube covering at least the outside surface of the strips, and the sides of adjacent ones of said strips being unsecured to each other.