Pull-string-type anti-reflux negative-pressure drainage system

Abstract

The invention relates to a pull-string-type anti-reflux negative-pressure drainage system. The system includes a main drainage bag, an auxiliary drainage bag, a connection pipe and protection cups. The lower ends of the main drainage bag and the auxiliary drainage bag are each provided with a round plate bottom. A round ring is arranged in the center of each round plate bottom; a pull string is connected to each round ring. The lower end of each protection cup is of a hollow design and each hollow bottom is provided with a reinforcing support. A winding mechanism is arranged in a side of the protection side. The periphery of a plastic cover is arranged at the upper edge of the protection cup in a supported manner. The pull strings pull the round plate bottoms after passing through the hollow bottoms so as to enable the drainage bags to be in an expanded state and finally wind on the winding mechanism. The device provided by the invention has advantages of simple and skillful design, reasonable and compact structure, small number of joints, low rate of air leakage, high operation speed in use and accurate metering.

Description

technical field [0001] The invention relates to the field of negative pressure drainage devices, in particular to a pull-wire anti-reflux negative pressure drainage device. Background technique [0002] Vacuum negative pressure drainage devices are commonly used medical equipment in hospitals. It is mainly used to extract blood, body fluids, flushing fluid, etc. from the human body during emergency surgery and rescue. At present, the vacuum protection cup of the negative pressure drainage device is prone to cracks after long-term use, the connecting tube is not tight, and the sealing cover is not sealed, which is prone to Air leakage can cause the work to not progress normally and cause unnecessary losses, and sometimes the drainage liquid will enter the negative pressure machine inadvertently and damage the equipment; moreover, the negative pressure suction of the negative pressure suction device in the past is sometimes not enough, and the negative pressure suction Part o...

AI Technical Summary

Problems solved by technology

It is mainly used to extract blood, body fluids, flushing fluid, etc. from the human body during emergency surgery and rescue. At present, the vacuum protection cup of the negative pressure drainage device is prone to cracks after long-term use, the connecting tube is not tight, and the sealing cover is not sealed, which is prone to Air leakage can cause the work to not progress normally and cause unnecessary losses, and sometimes the drainage liquid will enter the negative pressure machine inadvertently and damage the equipment; moreover, the negative pressure suction of the negative pressure suction device in the past is sometimes not enough, and the negative pressure suction Part of the suction generated by the device must ensure that the drainage bag is in a stretched state, resulting in insufficient suction and no liquid can be pumped out. It is necessary to use a high-power negative pressure device, which requires high equipment and high costs.

[0003] For the patent publication (announcement) No.: CN204655601U, a spring-type anti-reflux negative pressure drainage device is also designed by the applicant, but the use of springs solves some of the above problems, but there are some problems in the springs, the springs are easy to deform, and the drainage The volume of the bag is unstable, the measurement is inaccurate, and the spring is harmful to the bag

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