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Polymer Actuators
Stephen Leeb, PhD introduced the capabilities of polymer actuators. These are synthetic materials that increase or decrease in volume in response to various inputs: temperature, electromagnetic fields, acidity, and so on. Depending on the configuration, the polymer actuators can provide a pulling or pushing force, so they are very versatile. The present limitation is that large gels change slowly but create a stronger force; smaller quantities of gel change faster but with less force.
One possible medical application would be to line flexible tubing with a temperature-calibrated layer of polymer gel. If this were a lavage tube, for example, it could be designed so that if the fluid became so hot that it might injure the patient the gel would automatically thicken and shut off the flow. In this application, the gel lining serves as both sensor and valve, at a very low cost. He speculated that this technology might prove suitable to create an automatic volume-adjustable socket in the future.
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hydraulic knee joint
In the past I have worn KAFO's because of instability of my joints due to having a rare connective tissue disorder. These were custom made, and of the 'cosmetic' plastic style.
This year I had major spinal surgery that led to damage to ... read more
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Re: hydraulic knee joint
Without knowing a great deal more about the details of your physical condition, it will not be possible to make any detailed recommendations, although there are a number of developments in KAFO design in the past decade or so, including the... read more
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Re: hydraulic knee joint
hi
i am mohanagandhi,Prosthetist Orthotist ,doing my practice in india (Hyderabad,my Mobile Numbers 9885349838,9885454003,9440054332)
i got what u r aiming for ,that is u need some external assistance device which can help you to push... read more
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polycentric knee joints
Hi, I'm trying to find information about reverse engineering of a polycentric knee joint for above knee amputees. I'm trying to take the centrode first and then build the bar system around it. Does anyone know if this has been tried before ... read more
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Re: polycentric knee joints
Although I'm not an engineer, I believe this is an interative process. Some years ago, Professor Radcliffe demonstrated a simple program he had written that allowed him to specify different link geometries which produced animations of the ... read more
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virtual prototyping of human limbs using reverse engineering
I am mechanical engineer and am a Lecturer at BIRLA INSTITUTE OF TECHNOLOGY RANCHI .I am doing my phd in the area of reverse engineering for the development and protyping human limbs which would be an aid for the surgeons as well as the doc... read more
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Basics of CAD in regards to socket design for trans-femoral amputees
Hi! I'm a college senior(Mechanical Engineering) in India, and am planning to do my Master's in Biomechanics. Could you suggest me a few good web-sites and other related material to understand the basics of mechanics for lower-extremity pro... read more
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Re: Basics of CAD in regards to socket design for trans-femoral amputees
This is a complex area that is not discussed in any depth on the web, to the best of my knowledge. There are a number of texts that provide entry-level information on both biomechanics and socket design concepts. You're probably best advi... read more
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trans-tibial amputee orthoses
Hi, I am a physiotherapist working in Australia. I have a patient case study to perform on a 67 year old female with sero-positive RA for 50 years who had a trans-tibial amputation due to gangrene.
A) What prosthesis would be BEST su... read more
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Re: trans-tibial amputee orthoses
orthosis u approch donjoy company based at US for prosthesis u prefer to go with the folowing components ,1.fixed ankle joint ,2.sach foot,2.silicone suspension sleeve 3.graplite pylon
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amputee cyclists
Hi - I am looking for information on the different types of prosthetic limbs (trans-tibial and trans-femoral) being used by amputee cyclists. The various knee and other components involved interest me, as do the alterations being made to th... read more
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mountain climber amputee
Hello,
I hope you can help me; my son is looking for the name of a man who, he believes, climbed Mount McKinley and is a double amputee. He has an assignment to write about someone who has overcome adversity and he had seen a documentar... read more
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Re: mountain climber amputee
You may have already gotten your answer (it is probably too late anyway), but I think the person you are asking about is Ed Hommer. He wrote a book about his life called "The Hill". He also has a web page at www.everestquest.com, which ha... read more
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Can you help me?
hi sir,
I'm from Türkey (Adapazar )
and I'm a student in univercity
as you know Adapazar saw an earthquake last year
and we can not find books as well as before it
my teacher gave me a duty about "electro- and magneto- rheologic fluid... read more
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Procedure code language
John, Give me more time to send you the document as I am taking the L-code course next week. thanks , rick
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Procedure codes & Network or Organization Registration
John, May Lehneis O & P also be listed as an organization or network as Actra Has? I have sent a HCFA Orthotic language proposal to David Schultz which is now near complete. Would you care to view it's content and advise me? Thanks, Rick Le... read more
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