Method for producing medical polyvinyl alcohol sponge

Abstract

The purpose of the invention is to provide a method for producing medical polyvinyl alcohol sponge, having the advantages of low cost and simple process. The method for producing the medical polyvinylalcohol sponge comprises the following steps: 1, completely dissolving polyvinyl alcohol in water at 80-100 DEG C to obtain an aqueous solution of polyvinyl alcohol; 2, adding a cross-linking agent and a catalyst to the aqueous solution of polyvinyl alcohol, and uniformly stirring the obtained solution; 3, pouring the uniformly stirred solution obtained in step 2 into a die, and carrying out heatinsulation at 50-75 DEG C for 10-24 h to realize setting; and 3, carrying out demolding and cleaning to obtain the medical polyvinyl alcohol sponge. The medical polyvinyl alcohol sponge produced through the method can be used in vacuum drainage carriers, has the advantages of good biocompatibility, porous and easy drainage, strong soft compliance, no shedding particles, clinically needed mechanical performances, small irritation on wounds, unobvious foreign body sensation, and facilitation of the rehabilitation of patients.

Description

technical field [0001] The invention belongs to the field of medical technology, and in particular relates to a preparation method of medical polyvinyl alcohol sponge. Background technique [0002] Surgical lacunar wounds are mainly manifested as sinus tracts and fistulas, and their main hazards are as follows: a. Because surgical lacunar wounds are not easy to heal and recurrent, chronic diseases often occur, resulting in a long course of disease for patients, and some patients even persist for 5-6 years. If it does not heal, it brings a heavy burden to the family and the society, and greatly occupies public medical resources; b. Pus and exudate flow out from the affected area of ​​patients with surgical lacuna wounds, accompanied by stench, which seriously affects the quality of life of patients and destroys The physical and mental health of the patient is life-threatening in severe cases; c. Surgical lacuna wounds are caused by infections at the wounds or surgical incisio...

AI Technical Summary

Problems solved by technology

"Cigarette drainage" has a certain therapeutic effect on surgical lacuna wounds, but has the following defects: a. Gauze rolls, silicone tubes, etc. are drained through the siphon principle, and the drainage effect is poor, local drainage is uneven, and wound exudates are obtained. Without timely drainage, it will seriously affect the recovery of the wound surface; b. The gauze roll and one end of the silicone tube are exposed to the air, which is prone to retrograde infection; c. The gauze roll is made of cellulose material with strong toughness, and the silicone tube is made of silica gel. The silicone is easy to harden after a long time, and the end of the silicone tube is hard, which leads to poor compliance of the two materials, and long-term use will cause strong pain in the affected area