Double drainage tube

Abstract

The invention discloses a double-layer drainage tube, which comprises an outer tube elastic membrane, an integral type inner tube, a split expansion type outer tube, a connection tube, an inner tube attachment spring, a seal tube, an inner tube seal ring, a connection tube seal ring and the like. The process of inserting the drainage tube into the organ of a human body is carried out in two stages: in the first stage, firstly, the split expansion type outer tube which is in an original state is inserted into the corresponding organ (such as a urethral canal) of the human body, wherein the diameter of the split expansion type outer tube is not greater than 3.5mm, and the pain of a patient is obviously reduced by the small-diameter outer tube. In the second stage, the seal tube is fixed with hands to make the head part of the integral type inner tube move along the inner wall of the split expansion type outer tube until the head part is parallel and level with that of the split expansion type outer tube, and during the process, the outer surface of the integral type inner tube is only contacted with the inner wall of the split expansion type outer tube, thereby, the friction betweenthe organ (urethral canal) of the human body and the integral type inner tube is eliminated. The split expansion type outer tube can reach 6mm in diameter after expanding in the radial direction, andthe larger diameter is beneficial to body fluid flowing out.

Description

technical field [0001] The invention relates to a drainage tube, in particular to a double-layer drainage tube. Background technique [0002] When the existing drainage tube is inserted into the body, due to its large diameter, it has a large friction with human organs, which increases the damage and pain of the patient's body. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a drainage tube with a small diameter and less pain when inserted into human organs, and a larger diameter after being inserted into the body, so as to significantly reduce the difficulty of drainage tube insertion. [0004] The technical solution adopted in the present invention is: the double-layer drainage tube is composed of a split expansion type outer tube and an integral inner tube, the head of the integral inner tube and the inner wall of the outer tube tail flange at the tail of the split expansion outer tube Contact, after the spli...

AI Technical Summary

Problems solved by technology

[0002] Due to the large diameter of the existing drainage tube when inserted into the body, the friction with human organs is large, which increases the damage and pain of the patient's body

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