Disposable negative pressure drainage device

Abstract

The invention provides a disposable negative pressure drainage device, which comprises an upper bottom surface and a lower bottom surface, wherein a bag wall is connected between the upper and lower bottom surfaces, a drainage tube is arranged on the upper bottom surface, and a lower surface of the left bottom end of the upper bottom surface is hinged with a left end of a first support slope rod,the right end of the first support slope rod is hinged to a lower sliding block, and the lower sliding block is slidably connected with a lower sliding groove on the upper surface of the lower end ofthe lower bottom surface; the upper surface of the left end of the lower bottom surface is hinged with the left end of a second support slope rod, the right end of the second support slope rod is hinged to an upper sliding block, and the upper sliding block is slidably connected to the upper sliding groove on the lower surface of the right end of the upper bottom surface; and the first support slope rod and the second support slope rod are both rod bodies which can be elongated in length but cannot be shortened after being elongated. The drainage device can adapt to the drainage demand of different strengths of the patient, and expands the suction force of the negative pressure drainage step by step by expanding the internal space of the negative pressure drainage device. The drainage device has the advantages of simple structure and low cost, and is suitable for large-scale medical application promotion.

Description

technical field [0001] The invention relates to the technical field of medical appliances, in particular to a disposable negative pressure drainage device. Background technique [0002] After the operation, patients need to perform negative pressure drainage on the waste body fluid secreted in the body to make it out of the body. Therefore, it is often necessary to use some disposable simple negative pressure drainage devices to drain the waste body fluid out of the body and collect it for special disposal. The common simple negative pressure drainage device in the prior art includes upper and lower bottom surfaces, a bag wall is connected between the upper and lower bottom surfaces, and a spring is also connected between the upper and lower bottom surfaces, and the elastic force of the spring stretches to stretch The upper and lower bottom surfaces form a negative pressure space for drainage between the upper and lower bottom surfaces and the bag wall, and use the negative ...

AI Technical Summary

Problems solved by technology

However, the elastic force of the spring of this negative pressure drainage device in the prior art is often not strong enough. Under the pressure of the external atmosphere, the upper and lower bottom surfaces cannot be effectively stretched, thereby affecting the negative pressure drainage strength. At the same time, Since the spring can only be stretched and formed at one time, the negative pressure inside the drainage device can only form a relatively fixed negative pressure at one time, it is difficult to adapt to the drainage needs of different strengths, and it is impossible to adjust the negative pressure drainage according to the negative pressure drainage intensity required by the patient suction and negative pressure space

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