Negative pressure device for digestive department

By designing the spiral tube and ratchet structure in the negative pressure drainage device, the problems of leakage and inconvenience in observation of the negative pressure device were solved, realizing automatic drainage and intuitive observation of the drainage fluid status, thus improving the convenience and safety of operation.

CN122440913APending Publication Date: 2026-07-24NO 2 PEOPLES HOSPITAL HUAIAN CITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NO 2 PEOPLES HOSPITAL HUAIAN CITY
Filing Date
2026-06-02
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing negative pressure devices are inconvenient for draining fluid and observing the drainage status after drainage, are prone to spillage and contamination of the work surface, and lack the structure for direct observation of different batches of drainage fluid, making operation inconvenient.

Method used

A negative pressure drainage device was designed, comprising a negative pressure bladder, an inner cannula, an insertion cannula, a secondary cannula, a main cannula, and a spiral tube. Through the cooperation of the spiral tube and a ratchet, the drainage fluid is automatically discharged and different batches of drainage fluid are separated and collected, and a transparent observation tube is used for direct observation.

Benefits of technology

It enables automatic drainage without the need for an inverted device, avoiding spillage and pollution, and allows for intuitive comparison of the drainage fluid status at different times, improving the convenience and safety of operation.

✦ Generated by Eureka AI based on patent content.

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    Figure CN122440913A_ABST
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Abstract

The application discloses a negative pressure device for internal medicine of gastroenterology, which comprises a negative pressure drainage device, the negative pressure drainage device comprises an elastic corrugated negative pressure capsule, an inner sleeve, a cannula, a secondary sleeve and a main sleeve are coaxially arranged on the inner shaft of the negative pressure capsule from top to bottom, a screw belt pipe is rotatably supported on the upper portion of the inner sleeve, a second ratchet and a second screw hole wheel are arranged in the screw belt pipe and are screw-connected with a driving screw belt rod, the lower end of the driving screw belt rod is connected with an angle adjusting screw belt rod, the angle adjusting screw belt rod is transmissionally connected with a first screw hole wheel, a first ratchet and a bias hole plate, a plurality of transparent observation tubes are arranged in the bottom of the negative pressure capsule in an annular array, when the negative pressure capsule is pressed, the angle adjusting screw belt rod drives the bias hole plate to rotate, so that different batches of drainage liquid flow into different transparent observation tubes, when the negative pressure capsule is loosened, the screw belt pipe rotates to screw-push the glue edges on the outer screw surface of the screw belt pipe upward to push the drainage liquid, and automatic drainage is completed; the negative pressure device can drain the liquid without inverting the device, liquid spilling and pollution are avoided, and the drainage liquid states in different periods can be compared without pouring out the liquid.
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