Closed flushing drainage device for treating deep wound infection

The closed flushing and drainage device, designed with a single-tube multi-micro-pore flexible tube, a magnetic peristaltic pump, and a portable power supply, solves the problems of poor drainage, blockage, backflow, and patient comfort associated with existing drainage devices. It achieves efficient and stable drainage and antibiotic maintenance, improving patients' freedom of movement and treatment effectiveness.

CN122272932APending Publication Date: 2026-06-26THE 971ST HOSPITAL OF THE CHINESE PEOPLES LIBERATION ARMY NAVY
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Patent Information

Application Number
CN202610733875.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-26
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing drainage devices have shortcomings in terms of drainage efficiency, antibiotic concentration maintenance, anti-blockage, power controllability, backflow prevention, and patient comfort. In particular, the parallel placement of two tubes in the drainage system can easily lead to problems such as poor drainage, fluid leakage, tube blockage, and limited patient mobility.

Method used

It adopts a single-tube multi-micropore flexible tube structure, a magnetically driven peristaltic pump, a portable power supply, and a replaceable guidewire design to achieve uniform flushing, unidirectional drainage, backflow prevention, and convenient unblocking, thereby improving drainage efficiency, maintaining antibiotic concentration, and enhancing the patient's freedom of movement.

Benefits of technology

It significantly improved drainage efficiency, maintained local antibiotic concentration, reduced the risk of secondary infection, reduced nursing burden and patient suffering, and improved patient comfort and treatment outcomes.

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Abstract

The invention relates to the technical field of medical instruments, in particular to a closed flushing drainage device for treating wound deep infection, which comprises a drainage tube, a liquid inlet tube, a liquid outlet tube, a front three-way tube, a rear three-way tube, a sealing cover, a guide wire and a flow regulator. The guide wire is sleeved with the drainage tube, the front three-way tube and the rear three-way tube are arranged at the two ends of the drainage tube respectively, the two ends of the guide wire are led out from outer tube openings of the front three-way tube and the rear three-way tube respectively, the sealing covers block the outer tube openings of the front three-way tube and the rear three-way tube respectively, the liquid inlet tube is connected with an inner tube opening of the front three-way tube, and cleaning liquid is injected into the other side of the liquid inlet tube. The liquid outlet pipe is connected with an inner pipe opening of the rear three-way pipe, drainage liquid is discharged from the other side of the rear three-way pipe, and the flow regulator is installed at the far end of the liquid inlet pipe. The guide wire with the annular structure is arranged in the drainage tube body, so that a pipeline is conveniently and repeatedly dredged, and the problem of pipeline blockage is effectively solved.
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