Sheath for gastrostoma, dilator provided with sheath, sheath for gastrostoma provided with insertion aid, catheter kit for gastrostoma and method of dividing sheath for gastrostoma

Abstract

It is intended to provide a sheath (1) for gastrostoma which comprises sheath body (11), into which a catheter (2) for gastrostoma is inserted, and a handle (12) and which is to be preliminarily inserted into a fistula in the case of inserting the catheter to the fistula and placing it in the body to thereby reduce the resistance against the insertion of the catheter for gastrostoma; a dilator provided with a sheath; a catheter kit for gastrostoma; and a method of dividing a sheath for gastrostoma. Use of the sheath for gastrostoma as described above makes it possible to reduce the insertion resistance in the case of placing a button type catheter for gastrostoma in gastrostomy or at the exchange of the catheter for gastrostoma. Moreover, it facilitates the air-supply control of an endoscope so that the endoscopic visual field can be stabilized in the course of operation.

Description

technical field [0001] The present invention relates to a gastrostomy sheath, a sheath dilator, a gastrostomy sheath with an insertion aid, and a gastrostomy catheter set for use in gastrostomy and catheter replacement for inserting and indwelling a gastrostomy catheter in a fistula hole And the division method of the sheath for gastric fistula. [0002] This application claims priority based on JP Patent Application No. 2007-310789 filed in Japan on November 30, 2007 and JP Patent Application No. 2008-305328 filed in Japan on November 28, 2008, and the content of the above applications is cited in this application. Background technique [0003] As methods of administering nutrition to patients who cannot take nutrition from the mouth, there are usually the following three methods, namely, intravenous nutrition administration, gastric tube nutrition administration by inserting a tube from the nose into the stomach, etc. Enteral nutrition administration for fistula. [0004...

AI Technical Summary

Problems solved by technology

[0006] has the following disadvantages in the pull-out method and the push-in method, that is, because the gastrostomy tube passes through the pharynx, the site where the gastrostomy tube is placed may be A wound infection occurs, in addition to which two endoscopes need to be inserted

On the other hand, in the insertion method, the gastric fistula tube does not pass through the pharynx, so the above-mentioned risk of wound infection is low, and it is enough to insert the endoscope only once, but it has the following disadvantages. In the case of using a guide wire, a thick puncture needle is used for puncture, and only a thin balloon catheter can be indwelled through the sheath. Therefore, if the balloon catheter is left in place for a long time, the balloon will shrink, so management become complicated

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