Navigation Links
Artificial foot recycles energy for easier walking
Date:2/16/2010

ANN ARBOR, Mich.---An artificial foot that recycles energy otherwise wasted in between steps could make it easier for amputees to walk, its developers say.

"For amputees, what they experience when they're trying to walk normally is what I would experience if I were carrying an extra 30 pounds," said Art Kuo, professor in the University of Michigan departments of Biomedical Engineering and Mechanical Engineering.

Compared with conventional prosthetic feet, the new prototype device significantly cuts the energy spent per step.

A paper about the device is published in the Feb. 17 edition of in the journal PLoS ONE. The foot was created by Kuo and Steve Collins, who was then a U-M graduate student. Now Collins is an associate research fellow at Delft University of Technology in the Netherlands.

The human walking gait naturally wastes energy as each foot collides with the ground in between steps.

A typical prosthesis doesn't reproduce the force a living ankle exerts to push off of the ground. As a result, test subjects spent 23 percent more energy walking with a conventional prosthetic foot, compared with walking naturally. To test how stepping with their device compared with normal walking, the engineers conducted their experiments with non-amputees wearing a rigid boot and prosthetic simulator.

In their energy-recycling foot, the engineers put the wasted walking energy to work enhancing the power of ankle push-off. The foot naturally captures the dissipated energy. A microcontroller tells the foot to return the energy to the system at precisely the right time.

Based on metabolic rate measurements, the test subjects spent 14 percent more energy walking in energy-recycling artificial foot than they did walking naturally. That's a significant decrease from the 23 percent more energy they used in the conventional prosthetic foot, Kuo says.

"We know there's an energy penalty in using an a
'/>"/>

Contact: Nicole Casal Moore
ncmoore@umich.edu
734-647-1838
University of Michigan
Source:Eurekalert

Page: 1 2

Related medicine news :

1. New Herbal Water Creating Taste Sensation: Ayalas Herbal Water Has No Calories, No Preservatives and No Artificial Additives. Just All the Natural Benefits of Herbs!
2. Brain measurements could lead to better devices to move injured or artificial limbs
3. Wearable Artificial Kidney Passes Test
4. Artificial skin system can heal wounds
5. Significantly higher success rates with artificial insemination
6. Artificial sweeteners linked to weight gain
7. Does artificial intelligence help clinicians to recognize atrophic gastritis with thyroid disease?
8. Rodent study finds artificial butter chemical harmful to lungs
9. Bay State Restaurants Still Using Artificial Trans Fat Despite Health Risks
10. Global Cervical Artificial Disc Market to Hit $1 Billion by 2012
11. Genetic test improves artificial fertilization
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/3/2015)... , ... August 03, 2015 , ... ... and development solutions for drugs, biologics and consumer health products, today welcomed the ... for review OPKO’s New Drug Application for a new treatment for chronic kidney ...
(Date:8/3/2015)... FL (PRWEB) , ... August 03, 2015 , ... ... to date of its industry-defining contract lifecycle management solution, as well as announced ... designed to increase the speed and ease of contract management tasks as well ...
(Date:8/3/2015)... ... August 03, 2015 , ... Sensato and ... Secure Healthcare Systems” This three-day, highly interactive and immersive workshop, has been ... access to the tactics, techniques and practices required to design and develop highly ...
(Date:8/3/2015)... ... 03, 2015 , ... A July 13 article from The Daily Mail titled ... Natural Painkiller That Can Last 'For Five Weeks'" discusses the use of stem ... study showed that harvesting stem cell-rich bone marrow from the hip, known as bone ...
(Date:8/3/2015)... ... August 03, 2015 , ... ... today that Joe Williams has joined its growing California employee benefits division. ... service model to his clients. Mr. Williams will be joining the newly integrated ...
Breaking Medicine News(10 mins):Health News:Catalent’s OptiShell™ Technology is Delivery Platform for OPKO Health’s New Chronic Kidney Disease Treatment 2Health News:Catalent’s OptiShell™ Technology is Delivery Platform for OPKO Health’s New Chronic Kidney Disease Treatment 3Health News:Novatus Unveils Milestone Software Release 2Health News:Sensato and Divurgent are pleased to announce the development of it’s new program “Designing Secure Healthcare Systems” 2Health News:Sensato and Divurgent are pleased to announce the development of it’s new program “Designing Secure Healthcare Systems” 3Health News:Sensato and Divurgent are pleased to announce the development of it’s new program “Designing Secure Healthcare Systems” 4Health News:Los Angeles Spine Surgeon Gives Insight into How Stem Cells Can Relieve Back Pain 2Health News:Los Angeles Spine Surgeon Gives Insight into How Stem Cells Can Relieve Back Pain 3Health News:HUB International Insurance Services Announces Joe Williams Has Joined its Northern California Employee Benefits Division 2
... A new study has dismissed any association between consumption of ... association between total calcium intake//, and consequent changes in body ... intake of calcium. ,More than 19,000 men between ... a 12-year period. All of the study participants consumed a ...
... health benefits. Now, teens, who want that dream weight, can ... obesity at bay, according to a new study. Researchers at ... combined yoga with breathing exercises certainly helped knock off the ... boys participated in a study. They were divided into two ...
... appear to have scaled up following the improvement in ... flu outbreak abated.// , ,According to an official ... been some improvement in the movement of these commodities ... in the last four days. Poultry consumption too has ...
... Information (CIHI) said that despite the government investing a ... of waiting time. // Glenda Yeates, president of the ... and high-priority procedures has increased dramatically. ,But ... much. Statistics show that the number of angioplasties and ...
... study claims that calcium intake was not associated with weight ... published in the American Journal of Clinical Nutrition. ... enrolled in the Health Professionals Follow-up Study were taken as ... between total calcium intake from diet and supplements and changes ...
... eastern Sarawak state of Malaysia is causing concern among Malaysian ... all schools in the area to prevent the disease from ... causes the disease, has so far affected more than a ... peninsular Malaysia, the health ministry will take a clear line ...
Cached Medicine News:
(Date:8/3/2015)... CORAL SPRINGS, Florida , August 3, 2015 ... OFF HOLD -- FN Media Group LLC, PIV757417 ... Partnerships Focus on Developing Orphan Drug Products & ... is now OFF HOLD. Distribution time: 3 Aug ... development agreements between biotech companies, military surgical research ...
(Date:8/3/2015)... FRANCISCO, Calif. , Aug. 3, 2015 /PRNewswire/ ... the treatment of cancer, today announced the promotion ... Debanjan Ray , who previously served ... management, has been promoted to senior vice president ... CytomX, Mr. Ray held positions as the vice ...
(Date:8/3/2015)... OSAKA, Japan and FLORHAM PARK, ... today announced that once-daily naldemedine met its primary and ... for the treatment of opioid-induced constipation (OIC) in adult ... oral, peripherally acting mu-opioid receptor antagonist (PAMORA). This is ... its primary and key secondary endpoints. Study ...
Breaking Medicine Technology:/OFF HOLD OFF HOLD OFF HOLD -- FN Media Group LLC/ 2/OFF HOLD OFF HOLD OFF HOLD -- FN Media Group LLC/ 3/OFF HOLD OFF HOLD OFF HOLD -- FN Media Group LLC/ 4/OFF HOLD OFF HOLD OFF HOLD -- FN Media Group LLC/ 5/OFF HOLD OFF HOLD OFF HOLD -- FN Media Group LLC/ 6CytomX Announces Management Team Promotions 2CytomX Announces Management Team Promotions 3Naldemedine Meets Primary Endpoint In Phase 3 Study For The Treatment Of Opioid-Induced Constipation 2Naldemedine Meets Primary Endpoint In Phase 3 Study For The Treatment Of Opioid-Induced Constipation 3Naldemedine Meets Primary Endpoint In Phase 3 Study For The Treatment Of Opioid-Induced Constipation 4
... The ESR-100 is an automated 100-position ESR ... 50 samples daily. The instrument accurately and ... in 1.2ml or 2.0ml ESR-Vacuum Tubes. Results ... Westergren Method) and are available in 30 ...
The CA-500 series quickly and accurately measures up to 5 coagulation parameters. It is the analyzer of choice for low to mid volume laboratories, or as a backup to larger coagulation analyzers....
... Qwik-Let® Premier is our top-of-the-line ... the attributes of the Qwik-Let® ... patented Lan-X feature. The Lan-X ... and protection in the removal ...
... The new Finnpipette Focus from Thermo ... with uncompromising performance. Advanced features such ... .01ul fine volume adjustment on microvolumes help ... in single channel pipettes. The new interchangeable ...
Medicine Products: