Drainage tubes and drainage devices

Abstract

The invention provides a drainage tube, comprising a drainage tube body, one end of the drainage tube body has a spherical arc-shaped drainage head, and the drainage head is composed of at least three drainage flaps; the drainage tube body is provided with corrugated Telescopic tube; the part of the drainage tube body close to the corrugated telescopic tube is connected with a drainage tail tube; the inner tube of the drainage tube body is coaxially provided with an inner tube, one end of the inner tube is provided with a miniature pressure sensor, and the other end of the inner tube passes through the corrugated telescopic tube. The closed end of the tube; the corrugated telescopic tube shrinks axially to push out the miniature pressure sensor from between the drainage flaps, and a drainage channel connecting the outside and inside of the drainage tube body is formed between every two adjacent drainage flaps and the outer wall of the inner tube ; The wire of the miniature pressure sensor is provided with a signal joint at one end passing through the inner tube. The present invention also provides a drainage device including the drainage tube, which can accurately control the drainage volume of the fluid accumulation by detecting the pressure in the wound cavity or body cavity where the fluid accumulation is located, and avoid excessive drainage.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a drainage tube and a drainage device. Background technique [0002] External drainage of effusion is a drainage method commonly used in clinical practice. It puts one or more porous catheters connected to the drainage bag into the wound cavity or body cavity, and the effusion in the cavity is automatically led out into the drainage bag, which can prevent infection and relieve the adjacency. Compression of organs and tissues improves symptoms and can promote wound healing. According to clinical experience and a large number of literature searches, it is shown that intermittent and quantitative drainage are very important in the process of drainage of effusion. For example, rapid drainage of a large amount of pleural effusion can lead to reexpansion pulmonary edema and mediastinal oscillation, and excessive drainage of peritoneal effusion can lead to a sudden drop in ...

AI Technical Summary

Problems solved by technology

However, the design and application of these drainage devices are only for drainage of blood and exudate, and the determination of the drainage volume needs to be estimated manually based on experience, and the accuracy of the estimated drainage volume needs to be improved, and human control is required during the drainage process , very inconvenient to use

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