Replaceable 3D printing nozzle for Crohn disease perianal fistula

Abstract

The invention relates to the technical field of biological printing, in particular to a replaceable 3D printing nozzle for Crohn disease perianal fistula, which comprises a nozzle main body, a partition plate fixing block is arranged at the upper part in the nozzle main body, an air guide inner diameter is formed in the partition plate fixing block, a locking plate pipe diameter connecting part is arranged on one side of the air guide inner diameter, and a locking plate pipe diameter connecting part is arranged on the other side of the locking plate pipe diameter connecting part. And a clamping ball pipe diameter connecting part is arranged below the locking plate pipe diameter connecting part. According to the replaceable 3D printing nozzle for the crissum fistula of the Crohn disease, a clamping ball structure and a locking plate structure are linked through a clamping ball pipe diameter connecting part, an air guide inner diameter and a locking plate pipe diameter connecting part, so that automatic locking of the 3D printing nozzle is completed; the situation that normal use of a biological 3D printer is affected by a 3D printing nozzle gyroscope due to unstable installation in the use process of the 3D printing nozzle is avoided, after use is finished, the 3D printing nozzle can be disassembled and unlocked only by disassembling the air discharging cover and releasing air in the air guiding inner diameter, and the 3D printing nozzle is convenient to assemble and disassemble.

Description

technical field [0001] The invention relates to the technical field of bioprinting, in particular to a replaceable 3D printing nozzle for Crohn's disease perianal fistula. Background technique [0002] Crohn's disease is an inflammatory bowel disease of unknown etiology that can occur anywhere in the gastrointestinal tract, but is more common in the terminal ileum and right colon. Both this disease and chronic nonspecific ulcerative colitis are collectively referred to as inflammatory bowel disease (IBD). The clinical manifestations of this disease are abdominal pain, diarrhea, and intestinal obstruction, accompanied by extraintestinal manifestations such as fever and nutritional disorders. The course of disease is more protracted, shows effect repeatedly, is difficult for a radical cure. Perianal fistula-type diseases are very common in patients with Crohn's disease, and complex anal fistula or multiple fistulas can be as high as 23% in such patients. With the development...

AI Technical Summary

Problems solved by technology

[0004]The purpose of the present invention is to provide a replaceable 3D printing nozzle for Crohn's disease perianal fistula to solve the problem of Crohn's disease anal fistula Most of the 3D printing nozzles used for peripheral fistula use threaded connection, but the threaded connection is not reliable. After long-term use, it is easy to bite loose due to the wear of the thread groove, and the phenomenon of thread slippage occurs, which leads to poor connection of the nozzle. Stable, problems that affect normal use

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