A chest drainage device

By designing a damping structure for the collection bottle and water seal bottle in the chest drainage device, the problems of water seal failure and low exhaust efficiency caused by shaking are solved, achieving stable and efficient drainage in outdoor and combat trauma first aid.

CN122272931APending Publication Date: 2026-06-26THE FIRST AFFILIATED HOSPITAL OF ARMY MEDICAL UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
THE FIRST AFFILIATED HOSPITAL OF ARMY MEDICAL UNIV
Filing Date
2026-05-26
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing chest drainage devices are prone to water seal failure due to shaking in outdoor or war trauma emergency situations, and their existing structures are complex or have low air venting efficiency, making it difficult to meet the needs of draining large amounts of fluid.

Method used

A diversion device comprising a collection bottle and a small water-sealed bottle was designed. The water-sealed bottle is suspended inside the collection bottle, using a damping effect to reduce shaking, and the stability is improved by the transparent hard plastic material and the liquid surface design to prevent backflow.

Benefits of technology

It effectively reduces the impact of shaking during movement, improves drainage and venting efficiency, simplifies the structure, reduces production costs, and is suitable for outdoor and combat trauma first aid use.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention relates to the field of medical device technology, specifically to a chest drainage device, comprising a collection bottle containing a small water-seal bottle suspended within it. The distance between the center of gravity of the water-seal bottle and the inner upper surface of the collection bottle is between one-third and one-half the height of the collection bottle. Both the water-seal bottle and the collection bottle are made of transparent hard plastic. An exhaust pipe and a drainage pipe are connected at the top of the collection bottle. The upper end of the drainage pipe extends outside the collection bottle, while the lower end is inside the collection bottle and extends into the water-seal bottle. The water-seal bottle acts as a damper for the collection bottle, and the damping effects of both interact with each other, making the whole device more stable and effectively reducing the impact of swaying during movement. This makes it more suitable for outdoor use, combat trauma, and other similar scenarios. Furthermore, because the water-seal bottle is small, when a patient drains effusion, the drained effusion first enters the water-seal bottle and then overflows into the collection bottle. Using the collection bottle to collect the effusion avoids both backflow and prevents the effusion from affecting the drainage effect.
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