Self-creeping type nasal gastrointestinal catheter

Abstract

The invention relates to a self-creeping type nasal gastrointestinal catheter, which comprises a primary tube, a secondary tube, a balloon and an elastic guide wire, wherein the primary tube and the secondary tube are mutually not communicated; the secondary tube clings to the wall of the primary tube; the balloon is arranged in a mode of surrounding closely to the outer wall of the front end of the primary tube, and the balloon communicates with the front end of the secondary tube; the elastic guide wire is arranged in the primary tube in a detachable mode; through the gravity and the volume of liquid injected in the balloon, the catheter can slowly creep to a required position in a gastrointestinal tract; by virtue of the primary tube, the gastrointestinal tract is cleaned or nutrition is supplied to the gastrointestinal tract; by arranging an infusion opening is formed in the outer wall of the primary tube on the front side of the balloon or in the front end of the primary tube, detention and reflux caused by accumulation of a nutrient solution or a medicine liquid in the upper end of the balloon in a process of nutrient solution infusion or gastrointestinal administration can be effectively relieved, and subsequently, a circumstance that the supply of the nutrient solution or the medicine liquid into small intestine is affected can be avoided, so that the process of nutrient solution infusion or gastrointestinal administration becomes more convenient; and since the front end of the primary tube is designed as a bullet, a process of catheterization becomes more smooth and noninvasive, and the tolerance of patients is enhanced.

Description

technical field [0001] The invention relates to the field of medical devices, more specifically, to a self-perturbing nasogastric catheter. Background technique [0002] At present, in the field of medical devices, when doctors need to clean the patient's gastrointestinal tract or perform gastrointestinal nutrition, in the current nasogastric and jejunal tubes, the catheter without a balloon can only be blindly inserted into the gastrointestinal or gastrointestinal tract by external force. With the help of invasive operations such as gastroscopy and surgery, the catheter cannot be positioned as required in the intestinal lumen due to the absence of an intestinal fixation balloon. For a catheter with a balloon, the balloon is set at the front end of the catheter, and no infusion hole can be opened at the front end of the mother tube. Only the large tube wall of the mother tube at the back end of the balloon has a through hole, and the balloon is easy to block the nutrient sol...

AI Technical Summary

Problems solved by technology

[0002] At present, in the field of medical devices, when doctors need to clean the patient's gastrointestinal tract or perform gastrointestinal nutrition, in the current nasogastric and jejunal tubes, the catheter without a balloon can only be blindly inserted into the gastrointestinal or gastrointestinal tract by external force. With the help of invasive operations such as gastroscopy and surgery, the catheter cannot be positioned as required in the intestinal lumen due to the absence of an intestinal fixation balloon

For a catheter with a balloon, the balloon is set at the front end of the catheter, and no infusion hole can be opened at the front end of the mother tube. Only the large tube wall of the mother tube at the back end of the balloon has a through hole, and the balloon is easy to block the nutrient solution or medicinal solution in the balloon. Retention and reflux are caused by the rear end of the jejunum, which affects the entry of nutrient solution or medicinal solution into the jejunum

In addition, the existing design of the front end of the catheter has defects, the patient's tolerance is poor, and it is easy to cause trauma

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