Composite Prosthetic Leg

Composite Prosthetic Leg

Over the last 5 to 10 years, the adoption of carbon fiber composites and lightweight metal alloys in crafting carbon fiber prosthetic legs represents a significant technological advancement. These contemporary prosthetic devices enable thousands of individuals to partially overcome the challenges of limb loss and lead fulfilling lives. Many users participate in sports, some even setting new performance records.

Product Name:Composite Prosthetic Leg

Materials: Carbon Fiber and Epoxy Resin (*bespoke mold needed beforehand)

Size: Tailored to fit

Advantages of Composite Prosthetic Leg

1.Utilization of Advanced Molding Methods:

High Gain employs cutting-edge molding techniques to tailor carbon fiber prosthetic legs based on individual height, weight, and muscle structure. The use of split dies in conjunction with resin transfer molding and prepreg methods allows for the creation of intricate and customized structures.

2.Exceptional Specific Strength:

In warm-blooded creatures, muscles and tendons facilitate movement, while bones and joints bear weight. Existing carbon/epoxy composites can easily achieve a tensile strength of 700 MPa and an elastic modulus of 70 GPa. With a density of 1.6 g/mL, the material exhibits remarkable specific strength. In addition to its tensile strength, its high compressive strength and fracture toughness further enhance the material's quality. This material stands out among alternative options for artificial limb production.

3.Optimal Weight Distribution:

The specific strength of carbon fiber composites is so superior that a prosthesis with equal strength to a natural leg can be fabricated at 60% lighter weight. The original carbon fiber prosthesis is exceptionally lightweight.

4.Maintenance of Hygiene:

Apart from high strength, any material utilized in prostheses must also possess easy-to-clean, non-hygroscopic, corrosion-resistant, bacteria and fungus-resistant, UV-resistant, sweat and salt-resistant properties, and should be cosmetically acceptable. Following curing and cleansing, epoxy resin will not irritate human skin or trigger allergies. Accidental skin contact with the prosthesis poses no harm. Carbon composites exhibit all these essential properties.

5.Fatigue Resistance:

Another critical aspect for prosthetic materials is fatigue strength. The load on a prosthesis varies with each step, as the device continuously bends and returns to its original shape. With each bend, all materials experience strength loss over a specific number of cycles, leading to component damage. Gradually diminishing strength and shortened service life are unacceptable in prosthetic devices. For instance, aluminum prostheses from the 1960s had a service life of just one year. Various failure modes observed during repeated bending include cracking of polymer matrices, fiber fracture, layer delamination, and separation at the matrix/fiber interface. Among these, separation at the fiber/matrix interface has the most significant impact on component lifespan. The graphs below indicate the extent of strength loss due to fatigue in different materials.

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