Návrh a vývoj odlehčovací ortézy nohy

Abstract

Patients who suffer from Charcot foot should not load the effected foot for approximately 8-

Patients who suffer from Charcot foot should not load the effected foot for approximately 812 weeks. The current orthosis at Dr. Soetomo Hospital does not provide efficient unloading of the foot, thus, the aim of the project is to design a solution that efficiently unloads the foot of their Charcot foot patients. This project yields a final solution that uses hydrostatic compression and the conical shape of the leg to bear the weight of the user. Calculations are conducted to assess the validity of the design. For users between 50 ? 250kg the compressive stress required to brace the leg without slippage is calculated to be 34.1 ? 117.1kPa. The shear stress between the leg and the corset is calculated to be 6.2 ? 51.5kPa. These stresses are below the values measured on trans-tibial prosthetic socket users. A visual prototype is created and tested on two users to observe their response to donning and doffing. Each user showed a capability of donning and doffing the brace by themselves, and the corset accounted for the volume difference between the legs of the two users. The final design weighs 0.64kg and can be manufactured for an estimated 166.21euro. The final product theoretically achieves the aims of the project, however, a functional prototype is recommended in order to test its validity.