Saeed Zahedi is among the leading designers of prosthetics. As Technical Director of Chas A Blatchford & Sons, he’s been at the forefront of breakthroughs which make life better for amputees.
Using digital electronics and intelligent interfaces, the company has developed a number of foot, hydraulic ankle and microprocessor-controlled knee systems.
Blatchford runs over 30% of NHS prosthetics and orthotics contracts, including the Defence Medical Rehabilitation Centre at Headley Court. The business also provided artificial leg systems for the people of Haiti in the wake of the 2010 earthquake. It won the Queen’s Award for Technology in 1996 and the Queen’s Award for Innovation in 2010.
Why prosthetics design?
I wanted to do something useful. Something people really needed. That ruled out cars, planes and weapons. I did think about recycling plants and technology for developing countries. But it was working on artificial arteries that really awakened my interest in replacing body parts.
What projects are you most proud of?
The microprocessor-controlled knee and intelligent prosthesis, which led to the market accepting electronic control of lower limbs, was probably our biggest single contribution. It was a major step in changing amputees’ lives. But my favourite projects are the later generations of these systems. There’s an even bigger ‘wow’ from amputees when they first try them. When they say they walk nine miles without getting tired, I’m satisfied we’re on the right path.
What are you working on now?
My vision is a prosthesis close to a normally functioning limb. The ankle and foot operate together with the knee through a smart socket and adjust to give the most function with the least discomfort. We’ve already developed the microprocessor-controlled knee and ankle. Now we’re making the two ‘talk’ to each other so they work in harmony and help bi-lateral amputees co-ordinate right and left limbs. We’re also getting the system ready to work with the smart socket, which connects it to the body. Then it will be about
evolving totally interchangeable lower limb segments and self-learning software.
Which other designers’ work do you admire?
Paul Winchell for his artificial heart design, the simplicity of the Apple team’s work, Bill Gates’ business awareness and generosity to the community that made him, and James Dyson for getting the public interested in design. But most good design I’ve seen is the result of many people’s efforts and it’s best to acknowledge everyone’s contribution.
Where do you go for inspiration?
Anywhere from the Saatchi Gallery, RSA design shows and university exhibitions to films, magazines and news.
Any advice for young designers?
Never give up on your vision, unless you’re on the wrong road. Keep looking for unmet needs. Be patient and calm, listen with both ears and you’ll get there. The solution will always emerge, almost like magic, and you won’t know where it came from.
Images from top: Elite blade, KY06 dual stance control for young active sportsperson.