A kind of chest cavity indwelling drainage tube and preparation method thereof

Abstract

The invention discloses a chest cavity indwelling drainage tube and a preparation method thereof. Using ether as a solvent, under the protection of argon gas, hydroxypropyl methylcellulose phthalate, isophorone diisocyanate and diethylene glycol Add alcohol dimethacrylate to ether, add potato starch, cellulose acetate, ethylene glycol, initiator and catalyst to form a prepolymer solution, then add chitin, polylactic acid, and then add ethylene glycol, 2,3 ‑Diphenyl‑4‑methyl‑1‑pentene, emulsifier, thickener, buffering agent participate in the reaction, impurity removal, drying; and coupling agent, plasticizer, antioxidant and accelerator Put it into a granulator to granulate, extrude, and make a finished product. The prepared thoracic indwelling drainage tube has great tensile strength and elastic modulus, even under acidic or alkaline conditions, it still has relatively large tensile strength and elastic modulus.

Description

technical field [0001] The invention relates to a drainage tube, in particular to a chest cavity indwelling drainage tube and a preparation method thereof. Background technique [0002] The pleural cavity is a potential space between the lungs and the chest wall. Under normal circumstances, the visceral and parietal pleura appear to have a thin layer of fluid that lubricates them during breathing. The pleural cavity and the fluid in it are not in a static state. The shape and pressure of the pleural cavity change greatly in each breathing cycle, so that the fluid in the pleural cavity is continuously filtered and absorbed and is in a dynamic balance. Various factors cause the fluid in the pleural cavity to form too quickly or absorb too slowly, resulting in pleural effusion. [0003] When there is too much fluid in the pleural cavity, it is necessary to use a pleural indwelling drainage tube to extract the effusion in the pleural cavity; at present, most of the traditional ...

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Problems solved by technology

[0003] When there is too much pleural effusion, a pleural indwelling drainage tube is needed to extract the pleural effusion; at present, most of the traditional pleural indwelling drainage tubes are made of polyurethane material, because polyurethane material has good tensile strength and elastic modulus. However, due to the patient's illness, the pH value of the pleural fluid will change, some become acidic, and some become alkaline, resulting in the tensile strength and elastic modulus of ordinary chest drainage tubes will be lower. Significantly reduced, which will affect the normal operation of pumping