5 results about "Absorbable polymers" patented technology

The application provides a dura mater repair material and a preparation method thereof. The preparation method comprises the following steps: mixing absorbable polymer material, collagen and a solvent to obtain a spinning solution, then performing electrostatic spinning to obtain an electrostatic spinning film, and then performing heat crosslinking to obtain the dura mater repair material. The preparation raw materials and the preparation method of the dura mater repair material are designed, the absorbable polymer material and the collagen are used as the raw materials, the electrostatic spinning and the heat crosslinking steps are performed, the dura mater repair material with good mechanical properties and degradability is prepared, meanwhile, the dura mater repair material has good morphology control, can effectively avoid the formation of adhesion, provides mechanical support for the surrounding damaged parts, and prevents the pressure of the sutured part from being too large.

This utility model discloses a stretching and shaping device for absorbable polymer materials, relating to the technical field of stretching and shaping equipment. It includes a support box, a movable frame, an air-cooling component, and an angle adjustment component. The support box is installed on the side of an extruder. The movable frame is mounted on the support box via a reciprocating translation component, and an extrusion component is installed on the movable frame to stretch the extruded material in conjunction with the translation of the movable frame. Two air-cooling components are provided, one on the movable frame and the other on the extrusion component, for continuous air cooling of the extruded material. The angle adjustment component is located on the air-cooling components. This utility model, through the above technical solution, solves the problem in the prior art where the cooling fan is fixed and it is difficult to continuously cool the extruded material.

This invention discloses a polymer ring-opening polymerization reaction control system based on high-viscosity rheological control, relating to the field of high-viscosity polymerization control technology, and specifically to the reaction control of the high-viscosity final stage of ring-opening polymerization of medical absorbable polymers PPDO or PGLA. A micro-bypass rheological measurement loop is installed alongside the main process to periodically collect fast variables and obtain reference viscosity point, shear consistency index, differential pressure drift, response time, and other health indicators. The bypass is isolated in case of abnormalities. Based on fast variable prediction and combined with health indicator calculations, a confidence weight is performed, and gated correction and parameter updates are executed, outputting a quality status estimate and reliable / suspicious / unusable tags. Trajectory control is performed under constraints such as temperature, torque, and differential pressure, with incremental control limited by tags. A degradation-cleaning-recovery state machine is triggered and an event log is recorded. This scheme can suppress false signal-driven processes, reduce the risk of deviation and loss of control, improve batch pass rate and closed-loop availability, and support continuous production traceability and operation and maintenance management.

This utility model discloses a spinning structure and spinning device for medical absorbable polymer materials, relating to the technical field of spinning structures for medical absorbable polymer materials. It includes a yarn output assembly; a cleaning assembly comprising a water tank, a first roller, and a second roller, both mounted on the inner wall of the water tank; a stirring assembly fixed inside the water tank; a blowing assembly mounted on the top of the water tank, including a blower mounted on the top of the water tank; and a winding assembly mounted on one side of the water tank, including a base plate mounted on one side of the water tank. A support column is fixedly connected to the top of the base plate, and a winding drum is mounted on one side of the support column. This utility model uses a rotating rod and a stirring rod to agitate the water, causing the higher water temperature around the path to alternate with the lower water temperature in other areas, resulting in a more uniform temperature distribution and improved cooling effect.

The application discloses a preparation method of a dual-function antibacterial and anti-inflammatory absorbable coating material, which comprises the following steps: (1) blending rifampicin, artemisinin and an absorbable polymer A with a mixed solvent to obtain coating solution A; blending minocycline hydrochloride, aspirin and an absorbable polymer B with the mixed solvent to obtain coating solution B; the mixed solvent is selected from hexafluoroisopropanol and ethyl acetate; (2) uniformly spraying the coating solution A and the coating solution B on the surface of a degradable substrate by ultrasonic spraying, and performing drying treatment to obtain the dual-function antibacterial and anti-inflammatory absorbable coating material. According to the preparation method, the proportion of antibiotic active ingredients, anti-inflammatory drug active ingredients and absorbable polymers is regulated, the antibacterial and anti-inflammatory drug coating is uniformly and stably fixed on the surface of the degradable substrate by ultrasonic spraying, and the dual-function absorbable antibacterial and anti-inflammatory coating material with controllable release is prepared by optimizing process parameters.