Spraying device for fecal microbiota transplantation

By designing a fecal microbiota transplant spraying device and using air pump pressurization, balloon injection and disturbance handle, the problem of uneven spraying of fecal microbiota liquid was solved, single-person operation and uniform distribution of fecal microbiota liquid in the intestine were achieved, thereby improving the transplant effect.

CN119733162BActive Publication Date: 2025-10-10THE FIRST MEDICAL CENT CHINESE PLA GENERAL HOSPITAL
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Patent Information

Application Number
CN202510156977.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-02-13
Publication Date
2025-10-10
Estimated Expiration
2045-02-13

AI Technical Summary

Technical Problem

In existing fecal microbiota transplantation methods, the fecal microbiota liquid is sprayed unevenly, requiring the coordinated operation of multiple people. In addition, the fecal microbiota liquid has high viscosity and limited capacity, which affects the transplantation effect and the difficulty of operation.

Method used

A fecal microbiota transplantation spraying device was designed, which uses air pump pressurization, balloon injection and a disturbance handle to achieve uniform spraying of fecal microbiota liquid in the intestine. The air pump pressurization allows single-person operation, the balloon sprays close to the inner surface of the intestine, the disturbance handle achieves swinging injection, and the motor stirs the liquid to maintain a consistent concentration.

Benefits of technology

It achieves uniform distribution of fecal microbial liquid in the intestine, reduces the number of operators required, ensures the consistency of fecal microbial liquid concentration, and improves the transplant effect.

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Abstract

The application provides a spraying device for fecal bacteria transplantation, which comprises a tank body, a cover member, the tank body is used for containing fecal bacteria liquid to be transplanted, the cover member comprises a cover body, a pipeline and an air pump, the cover body is used for sealing an upper end opening of the tank body, a first circular hole and a second circular hole are formed in the cover body, a first end of the pipeline is sealed and a second end of the pipeline is open, the first end of the pipeline is inserted into the intestine of a subject through an instrument hole of a colonoscope, a plurality of spraying holes are formed in the outer circumferential surface of the first end of the pipeline, the second end of the pipeline is inserted into the bottom of the tank body through the cover body via the first circular hole, the air pump is installed on the upper side of the cover body, the output end of the air pump is inserted into the second circular hole, the air pump is used for sucking external air into the tank body, so that the air pressure in the tank body is increased, the fecal bacteria liquid in the tank body is pushed into the pipeline through the second end of the pipeline and is transported to the first end of the pipeline under the action of the air pressure, and the fecal bacteria liquid is sprayed onto the inner circumferential surface of the intestine of the subject through the spraying holes on the circumferential surface of the first end of the pipeline.
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