Photo-cured hydrogel conveying device for minimally invasive surgery and in-situ printing method
A technology of minimally invasive surgery and delivery device, applied in the direction of fixator, etc., can solve the problems of increasing the difficulty of personnel operation, uneven curing, difficult delivery, etc., to reduce the risk of cross-infection, avoid large open wounds, and simplify the manufacturing process. Effect
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[0058] Such as Figure 6 As shown, the light-cured hydrogel delivery device and in situ printing method for minimally invasive surgery were placed on the table, and the initial posture was determined and fixed by a tripod. 10% modified light-cured gelatin was used for the outer ring, and 5% sodium alginate mixed solution was used as the photosensitive material for the inner ring, and 0.5% 1173 was used as the photoinitiator. Use 5cc dispensing syringe and syringe pump as the feeding device, connect the syringe with the material delivery port of the device with a hose with Luer male and female, choose 375nm ultraviolet laser and lighting fiber as the light source, Set the extrusion speed to 0.01ml / s, and the light source intensity to 30mw / cm 2 . Use SLA technology to print a block with a hole with a diameter of 5mm and a depth of 5mm as the defect model to be repaired. Adjust the position of the coaxial nozzle through the handle so that the outlet and the axis of the defect a...
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