Thoracentesis negative pressure drainage device

Abstract

The invention relates to a thoracentesis negative pressure drainage device which belongs to the technical field of medical appliances. The thoracentesis negative pressure drainage device comprises a drainage container, a spring and a drainage tube which are arranged in the container, the drainage container comprises a first spherical cap body and a second spherical cap body, a first spring base isarranged on the inner wall of the first spherical cap body in a protrusive manner, a second spring base is arranged on the inner wall of the second spherical cap body in the protrusive manner, one end of the spring is arranged on the first spring base, the other end is arranged on the second spring base, at least one liquid inlet joint and a row of liquid discharge interfaces are arranged on thefirst spherical cap body, a cover and a tag are connected on the first spherical cap body or the second spherical cap body, and the drainage tube is adapted with the liquid inlet joint. The thoracentesis negative pressure drainage device has the advantages of improving the strength and avoiding the rupture; when in use, the spring can compact or release the whole body, thereby not triggering the phenomena of distortion and bulging; the operation is convenient and the selectivity is good; and the thoracentesis negative pressure drainage device can shorten the drainage time.

Description

technical field [0001] The invention belongs to the technical field of medical equipment, in particular to a thoracentesis negative pressure drainage device. Background technique [0002] Thoracentesis negative pressure drainage device has more reports in the literature, especially Chinese patent literature. Drainage tube (patent called drainage device), because the drainage container is a simple wrinkled body structure, it may be difficult to relax (elongate) after being compressed. On the one hand, it will cause inaccurate measurement, especially in the drainage container When it is not full of fluid, it is impossible to confirm the amount of fluid discharged from the pleural cavity; on the other hand, the deformation coefficient is large due to poor strength, which causes confusion in measurement; on the other hand, even for the same patient, the effect of repeated use is poor, because After using for the first time, it is very likely that the wall body of the drainage c...

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Problems solved by technology

But there are common defects in both: First, because the shape of the drainage container is a barrel body or a cylindrical body, the tossing resistance effect is poor, and it is prone to rupture, and the latter's degree of resistance to rupture is much lower than the former, such as After repeated compression and stretching, the strength of the drainage container will be significantly reduced or even deformed; secondly, the springs of both have unreasonable structure and unreasonable cooperation with the drainage container, so-called unreasonable spring structure It means that the springs are all S-shaped or zigzag-shaped. When the drainage container is pressed to expel the air in the drainage container, the spring will not and cannot show the overall force of the upper, lower and middle parts, and often appears due to distortion. The situation where the middle part of the spring bulges

The so-called unreasonable cooperation between the spring and the drainage container means that the upper and lower ends of the spring are in point contact with the top and bottom walls of the drainage container, so the ends of the upper and lower ends of the spring can easily cause the top and bottom walls of the drainage container to be pierced, causing Liquid leakage; Its three, inconvenient operation, two patent structures usually need both hands to operate when making the drainage container shrink (pinching); The structure of the latter patent (called puncture needle) is unreasonable, and the specific performance is that the pleural effusion can only be led to the drainage container by the needle through the drainage tube. , so the drainage process is lengthy, which is not conducive to shortening the treatment time for patients

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