How can you design a more affordable prosthetic limb?

1 Understand the problem

The first step in designing a more affordable prosthetic limb is to understand the problem and the context of the users. You need to identify the specific needs, challenges, and expectations of the people who will use the prosthetic limb, as well as the environmental, social, and cultural factors that affect their use. For example, you need to consider the type and level of amputation, the available health care and rehabilitation services, the terrain and climate, the local materials and manufacturing capabilities, the stigma and acceptance of prosthetic limbs, and the cost and maintenance of the device. You can use methods such as interviews, surveys, observations, and focus groups to gather information and insights from the users and other stakeholders.

2 Define the requirements

The next step is to define the requirements and specifications of the prosthetic limb based on the problem and the context. You need to establish the goals, functions, and features of the device, as well as the constraints and trade-offs that affect its design. For example, you need to determine the range of motion, strength, stability, durability, comfort, and aesthetics of the prosthetic limb, as well as the materials, components, weight, size, shape, and cost of the device. You can use tools such as brainstorming, mind mapping, and prototyping to generate and evaluate ideas and solutions.

3 Choose the technology

The third step is to choose the technology and the method of fabrication of the prosthetic limb based on the requirements and specifications. You need to select the type and level of technology that best suits the needs and preferences of the users, as well as the resources and capabilities of the local context. For example, you can choose between passive, active, or bionic prosthetic limbs, depending on the degree of control, feedback, and complexity of the device. You can also choose between conventional, modular, or 3D-printed prosthetic limbs, depending on the availability, affordability, and customization of the device. You can use tools such as comparison tables, decision matrices, and testing to compare and select the best options.

4 Optimize the design

The fourth step is to optimize the design and the performance of the prosthetic limb based on the technology and the method of fabrication. You need to refine and improve the design and the functionality of the device, as well as reduce and minimize the cost and the waste of the device. For example, you can use techniques such as simulation, optimization, and validation to test and verify the design and the functionality of the prosthetic limb, as well as techniques such as material selection, component reuse, and design for assembly to reduce and minimize the cost and the waste of the device. You can use tools such as computer-aided design (CAD), finite element analysis (FEA), and design of experiments (DOE) to optimize the design and the performance of the prosthetic limb.

5 Implement the solution

The fifth step is to implement the solution and the delivery of the prosthetic limb based on the design and the performance. You need to fabricate and assemble the device, as well as distribute and fit the device to the users. For example, you can use methods such as machining, molding, or 3D printing to fabricate and assemble the prosthetic limb, as well as methods such as fitting, training, or follow-up to distribute and fit the prosthetic limb to the users. You can use tools such as quality control, feedback, and evaluation to ensure the quality and the satisfaction of the device.

7 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?