The year-old woman lost her leg in a freak accident early in when her foot was crushed while she changed the brakes on her car. Now, she is an internet phenomenon.
This is an abbreviated Project Idea, without notes to start your background research, a specific list of materials, or a procedure for how to do the experiment. You Homemade prothesis hands identify abbreviated Project Ideas by the asterisk at the end of the title.
If you want a Project Idea with full instructions, please pick one without an asterisk. Abstract The human body is an impressive piece of machinery, and your hands are no exception.
With some training, they can perform delicate and complex tasks like manipulating pens and tools to create art. Unfortunately, there is a rapidly growing demand for hand replacements.
But fortunately, scientists have studied human anatomy and biology and created human-like hands used as artificial devices called prosthetics. These devices are especially needed in war-torn countries. Land mines explosive devices concealed under the ground and designed to disable enemy targets ranging from combatants to tanks are the main cause of devastating limb injuries, leading to an estimated 26, amputations per year.
Prosthetics help those who have lost their hands to regain functionality, independence, and confidence. Some prosthetic designs mimic the human limb closely, while others use a more innovative, creative approach, like the "Cheetah Flex-Foot blades" used by the South African runner Oscar Pistorius.
In this science project, you will design and create your own prosthetic hand model and put it to the test. Creating a prosthetic hand that performs all the tasks a human hand can handle is clearly a daunting task, so in this science project you will select only a couple of tasks to work on.
Before you start creating, you might want to do some background research on the anatomy of human hands. Study the musculoskeletal system. How do the sizes of the palm and different fingers compare? What is the role of the muscles, the ligaments, and the tendons in the movement of the finger?
What gets pulled to make a finger move? What is the role of the bones or the skin? Next, study some robot hands.
The robotics science project Grasping with Straws: Make a Robot Hand Using Drinking Straws or the elbow project referenced in the Bibliography can give you ideas on how to create prosthetic fingers or hands.
As you look at these two references, pay attention to one major difference between them; in the case of the straw fingers, strings are only used to flex the finger. The elasticity of the straw is used to let the finger "spring" back to its original position.
Rubber bands or springs are other ways to obtain this feature. In the elbow example, different strings are used to flex and extend the body parts, mimicking flexor muscles and extensor muscles. Can you think of some advantages and disadvantages of both ways, and decide which will work best for your prosthesis?
Once you have plenty of information, you will probably be eager to start creating. Before you do so, think of the qualities you would like your prosthetic hand to have. Should it be life-like? What is an acceptable weight and size?
Should it be able to pinch something hard so it can hold a pencil or use a computer keyboard? Following the engineering design processyou will use these qualities to define the problem. Then you can create clear and precise design requirementswhich will then be used to evaluate and test your prototype.
Table 1 lists an example of how a problem translates into design requirements and test criteria.Creating a prosthetic hand that performs all the tasks a human hand can handle is clearly a daunting task, so in this science project you will select only a couple of tasks to work on.
Before you start creating, you might want to do some background research on the anatomy of human hands. Feb 06, · How to Make a Fake Hand. Whether you need a simple idea for a science project or a prop for your next Halloween party, you can't go wrong with a fake hand.
Teach younger kids how a hand works by 83%(34). This Instructable details how to construct a basic animatronic hand controllable by servo. It is part of a larger "DIY Prosthetic" series, however it can also be utilized for other robotic hand related purposes.
Cardboard, String, Rubber Bands and Prosthetic Hands Eighth-graders at North Middle School spent the week building functioning prosthetic hands with household items. It was a test of creativity. Scientific American is the essential guide to the most awe-inspiring advances in science and technology, explaining how they change our understanding of the world and shape our lives.
In , a man who lost both hands when a homemade bomb exploded was finally able to create a new pair of arms after eight years of planning. Sun Jifa could not afford the hospital's prosthetic limbs after the explosive, designed for blast fishing, detonated prematurely, but he desperately needed the use of his hands to work on the family farm.