Discuss 3D to print the technical application in domain of medical apparatus and instruments
[introduction] 3D is printed is control of a kind of computer, be based on digital model file, pass CAD or fault scanning data, according to the principle of the overlay that chase a layer, go out through printing material literary composition to build three-dimensional and stereo careful model, in recent years, development of the 3D technology that print is rapid, in market of traditional medicine industry, the biology material that factory batch produces cannot satisfy patient requirement, new student 3D prints a technology to have the advantage such as individuation, small lot and high accuracy, can resolve the contradiction between demand of healthy industry individuation and scale of production. Current, 3D individual character is printed already got applied in the domain such as dentistry, orthopaedics.
The classification that 3D prints
Three-dimensional printing of 1 smooth solidify (SLA)
Art of abbreviation smooth modelling, it is at present the most extensive 3D prints craft. Through liquid photosensitive polymer via violet external exposure processing depicts an object, achieve the goal that builds a model thereby. In smooth solidify material oligomer is most fundamental material, include to get together rich horse is acerbity ester of 2 hydroxide third (PPF) , adipose a group of things with common features polyester, polycarbonate and the natural high polymer such as protein, polysaccharide. To reduce systematic viscosity, because the tall viscosity of nozzle is brought about,avoid jam, need joins young member dissolvent of Shuang Jian in reaction system, namely thinner. Thinner can share whole solidify reaction, very important in photosensitive colophony system. SLA is had shape speed the characteristic with fast, tall precision, but also put in the cost that make taller, the defect such as original shape shape may be affected when cleaning foreign matter.
2 melt deposit shapes (FDM)
Also be called melt accumulation law. Choose hot frit sprinkler head, be in the material of half flow condition designation positional agglutinate, parts of an apparatus is formed after the accumulation that chase a layer. This craft basically is chosen thermoplastic material, include silk of olefin, plastic, nylon and metal of low melting point, pottery and porcelain to wait. This method applies to preparation medium or small dimensions (medium and complex degree) spare parts, do not suit to make large part.
Agglomeration of 3 alternative laser (SLS)
Use infra-red laser namely bundle agglomeration is pulverous. Have the advantage with treatment rapid rate, but shape product surface is rougher, the meeting in handling a process produces dust or poisonous gas, high temperature also can cause denaturation of one share data or degradation.
3D prints the technical application in domain of medical apparatus and instruments
1 compose builds the individual model that change 3D, imitate or direct operation process
The medical mode that conventional surgery treats basically is to pass X ray to wait video the 2 dimension data that learns an examination to obtain, define operation program according to the doctor’s experience, cannot satisfy individual change requirement. 3D is printed can build a model to object of intricate geometry appearance, and with already phases of some 2 dimension data are united in wedlock, get model of scientific and accurate place of patient pathological changes, for doctor operation cure offers essence of life to coach definitely.
23D prints artificial bone bracket
Bone organization basically is comprised by rice hydroxyl apatite and collagen, composition is simple, compose builds bone to organized a project to get paying close attention to extensively, obtain flying development. Traditional bracket technique, cannot be in microcosmic go up to have adjusting control to the aperture of bracket, and the 3D technology that print can imitate the structure with crude complex and poriferous character, make compose builds careful bone to organized bracket to become a possibility.
33D prints artificial organ and blood-vessel
Compare traditional man-made organ, 3D biology prints made organ to be accepted more easily by human body, but degradation, and can substitute scathing apparatus. But the active that how carries the cell in constituent project also is the difficulty that at present the organ prints.
4 cartilage organize the application of engineering field
Cartilage organization is by collagen, one part cell and water portion are comprised. Because cartilage organization is medium the metabolization active of cartilage cell is inferior, and distributing without blood-vessel, capability of repair of the ego after so cartilage organizes injury is finite. Although, at present Cheng of cartilage group weaver still lies experimental phase, be apart from effective and clinical applying to still have a space, but its development speed and clinical application foreground already were paid close attention to extensively.