An integrated negative pressure adsorption colon enema catheter, system and separation method

By designing an integrated negative pressure adsorption colonic enema catheter, and utilizing the combination of longitudinal adsorption ridges and a sponge core, the problems of difficult deep drug delivery and unstable fixation in existing colonic enemas are solved, achieving efficient, non-invasive, and safe deep colonic drug delivery.

CN122643531APending Publication Date: 2026-08-28BEIJING FANCHENG MEDICAL TECHNOLOGY CO LTD +1
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Patent Information

Application Number
CN202611117794.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-07-27
Publication Date
2026-08-28

AI Technical Summary

Technical Problem

Existing colonic enema techniques are difficult to achieve deep drug delivery. Traditional enema methods make it difficult for the drug solution to reach the deep part of the colon. Endoscopic intestinal tube techniques require endoscopic fixation, which can cause damage to the intestinal mucosa. Suction cups are not securely fixed and are prone to leakage. The multi-component structure is complex and costly.

Method used

A one-piece negative pressure adsorption colonic enema catheter is designed, which combines a longitudinal adsorption ridge and a sponge core with an inner-fastening skirt. It forms a high-strength fixation with the colonoscope through negative pressure adsorption, and the sponge anchoring unit provides flexible anchoring, allowing for non-invasive separation of the catheter from the endoscope.

Benefits of technology

This method achieves high-strength fixation between the catheter and colonoscope, prevents negative pressure leakage, reduces manufacturing costs, ensures non-invasive operation, reduces intestinal mucosal damage, and improves drug delivery efficiency.

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Abstract

The application discloses an integrated negative pressure adsorption colon enema catheter and belongs to the technical field of medical devices.The catheter body is internally provided with a main channel and a negative pressure channel which are parallel to each other and axially penetrate through.The main channel and the negative pressure channel are independent of each other and are not communicated with each other.A plurality of side holes which are communicated with the main channel are arranged on the distal end tube wall of the catheter body.An integrated longitudinal adsorption ridge is arranged on the outer wall of the catheter body in an axial direction and is spaced apart from each other.The side of the longitudinal adsorption ridge which is away from the center of the catheter body is provided with a central recessed area.The bottom surface of the central recessed area is axially provided with a plurality of negative pressure holes which are communicated with the negative pressure channel.A sponge core is embedded in the central recessed area.The technical scheme provided by the application can provide a colon deep enema catheter system which has strong adsorption force, good sealing performance, firm component anti-dropping performance, full non-invasive performance and safe withdrawal performance.
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