Digitized design and 3D printing method for individualized ankle fracture brace

Abstract

The invention discloses a digitized design and 3D printing method for an individualized ankle fracture brace. The method comprises the following steps of (1) acquisition of limb laser three-dimensional scanning point cloud data; (2) packaging, smoothing and thickening treatment of the point cloud data; (3) brace hollowing out, button connecting and lockable characteristic design; and (4) 3D printing of the brace. The individualized ankle fracture brace has the following advantages that (1) compared with a plaster bandage, experience and technical requirements for a producer are relatively lowered; (2) suffering of a patient for repeated changing of plaster in the treatment process is relieved; (3) data are precisely extracted according to different physical characteristics and damage situations of injured limbs of patients by use of a 3D laser scanner; (4) the brace can be manufactured by adoption of materials better than plaster in transmissivity, and dynamic X-ray observation of fracture healing situations is facilitated; and (5) in the manufacturing process, a model is hollowed out, so that the brace is made lighter in weight, the air permeability is good, the comfort degree is high, and higher patient compliance is achieved compared with the massive plaster.

Description

technical field [0001] The invention relates to the field of orthopedic orthopedic medical devices, in particular to a digital design and 3D printing method of a personalized ankle fracture brace. Background technique [0002] Ankle fracture is a common type of fracture clinically, and can be treated conservatively or surgically. No matter what treatment method is adopted, sufficient external fixation and gradual functional rehabilitation exercise are important guarantees for fracture healing and joint function recovery. [0003] At present, after the treatment of ankle fractures, plaster fixation is often used to limit the activities of the ankle joint. There are many inconveniences and drawbacks in such traditional external fixation methods: (1) Plaster bandage is a fixation method in which the plaster is hardened directly on the patient's fixed position and gauze and cotton pads are used as the inner lining, which has a great impact on the operator's technical skills. T...

AI Technical Summary

Problems solved by technology

There are many inconveniences and drawbacks in such traditional external fixation methods: (1) Plaster bandage is a fixation method in which the plaster is hardened directly on the patient's fixed position and gauze and cotton pads are used as the inner lining, which has a great impact on the operator's technical skills. The requirements are relatively high, and the shaping quality of plaster directly affects its effect on fracture fixation; (2) The plaster fixation process takes a long time, requiring the patient's affected limb to always maintain the required fixed position, which brings great inconvenience to the patient. Painful; (3) After the plaster bandage is air-dried, its properties are fixed, but the skin and soft tissue of the ankle joint will still swell progressively after trauma, resulting in poor blood circulation at the contact site, which often leads to local skin necrosis. , the plaster fixation will loosen and reduce the fixation effect, which will cause the fracture end to shift again and affect the fracture healing; (4) The plaster fixation has poor transmittance, and the plaster needs to be removed and remade when X-ray inspection of fracture healing is often required. It is necessary to replace different plasters according to the progress of rehabilitation, which significantly increases the cost of treatment; (5) The plaster is thick and has poor air permeability, and the patient's wearing comfort is low, which seriously affects the patient's compliance with rehabilitation treatment

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