Prosthetic Components

A major obstacle facing the medical profession is to provide effective amputees with artificial limbs that can mimic the actual motion and stability of a leg real. Restoring a full range of motion to a patient who has lost a leg is the overall goal of medical application solutions.

The challenge

The human body and leg both incredible when in use. The body reacts to its environment - the muscles and tendons are used to cushion the movement and adjust the rate of movement of the limbs, soil and terrain conditions. All these complex movements and corrections happen unconsciously as a reflection. Put one foot before the other is a gross simplification. A prosthetic leg is just a solid piece with a hinge of the knee is very inadequate.

Any synthetic solution would have to incorporate a complex system of feedback and motors to simulate the actual movement and allow the patient to move without moving clumsy that could eventually lead to back problems or stress in the uninjured leg of compensation. The whole leg had to be lightweight and high strength in which can be practical. All moving parts must also be able to provide enough energy to propel a grown adult and still meet the constraints size and weight.

Medical practice application solutions

Physical power and damping effects of a prosthetic replacement is achieved through the use of DC micro-motors. These micro-metallic brush DC motors offer high torque in an extremely compact and lightweight package. The operation of high-performance engine allows the leg to be used with batteries for up to two days before recharging is necessary.

The DC micro-motor is a model 10 mm high-performance gear works through friction in a nested set, planetary. The DC gear motor is used to adjust a damping valve. With each step, the moderating effect can range from its peak to almost zero and then rapidly again.

Durability

In considering any medical device for patient use, wide ranges of operating conditions have to be taken into consideration. If it is hot and humid or cold dry, all components have to endure to the environment. Each component must be able to provide support to a maximum load or it is considered a state of failure.

DC micro-motors are able to handle many years of continuous use, but every contingency has to be planned. In the case of mechanical failure, leg automatically switch to a full buffer mode. At this point, the prosthesis effectively act as a wooden leg. Be able to sustain the weight of one person, but not be able to move on.

Being able to provide realistic motion of a member amputees lost all desire and aspiration of the medical community. Using miniature DC micromotors allows the dream to come true. Packing a high torque motor in a small component, has proven efficient be highly effective in the design of the new generation of prostheses.

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ISO 13405-3:1996, Prosthetics and orthotics -- Classification and description of prosthetic components -- Part 3: Description of upper-limb prosthetic components Sale Price: $82.00   Eligible for free shipping! Availability: Usually ships in 24 hours See Reviews For This Product Description Establishes a method for describing upper-limb prosthetic components. This title may contain less than 24 pages of technical content.

ISO 13405-1:1996, Prosthetics and orthotics -- Classification and description of prosthetic components -- Part 1: Classification of prosthetic components Sale Price: $48.00   Eligible for free shipping! Availability: Usually ships in 24 hours See Reviews For This Product Description Contains a means of classifying the components of limb prostheses and their construction. This title may contain less than 24 pages of technical content.

ISO 13405-2:1996, Prosthetics and orthotics -- Classification and description of prosthetic components -- Part 2: Description of lower-limb prosthetic components Sale Price: $73.00   Eligible for free shipping! Availability: Usually ships in 24 hours See Reviews For This Product Description Establishes a method for describing lower-limb prosthetic components. This title may contain less than 24 pages of technical content.