As part of a Grabcad Challenge, I was encouraged to design a device that is able to reduce hand tremors in patients. The conceptual idea focuses on reducing vibration amplitudes with flexible and small dampers that are within a hand glove.
This document discusses two pain relief technologies: TENS (Transcutaneous Electrical Nerve Stimulation) units and shockwave machines. A TENS unit uses small electric signals from electrodes on the skin to block or distract from pain in several ways. Shockwave machines use high-intensity sound waves to cause microtrauma and increase blood flow to injured tissues. Both are described as non-invasive options for acute or chronic musculoskeletal pain and can help avoid opioid medications. While effective for many, their benefits depend on the individual and condition being treated.
New innovations in pain control- Anne Hartley- CSTS- March 2011kinemedics
The document discusses new innovations in pain control including an interactive neurostimulation device called InterX. It provides details on how InterX works with skin impedance and targets acupuncture points to treat acute, subacute and chronic pain. Research studies on InterX show benefits for post-op hip fracture and ankle surgery patients, including reduced pain and need for medication compared to sham groups. The document also summarizes studies on InterX for knee replacements.
Laser pricipals and uses in rehabilitaion medicinmahmood wajeeh
This document defines laser terminology and describes the different types and uses of lasers in medicine. It discusses how laser beams are produced and the characteristics of laser radiation. It explains the modes of action and effects of low-power laser therapy, including increased blood flow, pain relief, accelerated tissue repair, and anti-inflammatory effects. Application methods, indications, precautions, side effects, and contraindications are also outlined.
Sensation augmentation to relieve pressure sore formation in wheelchair userskix65939
The device aims to prevent pressure sores in wheelchair users by using force-sensitive resistors to measure pressure over time, and vibrating motors in an armband to provide feedback. It vibrates after 15 minutes of no movement, with increasing intensity until movement occurs. Initial testing on volunteers was successful, and further testing with wheelchair users will take place. The goal is to help relieve pressure and prevent sores through sensory augmentation.
A Continuous Variable Transmission (CVT) is a common transmission system used in low power engines as in ATV or motorcycles. This system is also used by the Baja SAE USB vehicles prototypes and motivated by the willingness to improve the performance of the prototype; I developed a final degree project which aims to describe the dynamic behavior of this system. The result was an algorithm that simulates the dynamic behavior of the vehicle given certain parameters. This project was to opt for mechanical engineering degree, earning an honorable distinction for it.
The Baja SAE Series is an annual competition organized by the Society of Automotive Engineers and has the objective to encourage undergraduate students to design, manufacture and test and All-Terrain vehicle prototype. There are almost 100 participants and it was a good opportunity to put in practice the knowledge acquired in class. In 2010 we achieved the 1st place in design, it has been the highest achievement in the whole team’s history, and it was of course a consequence of our hard work. As Powertrain head I led several tests in order to characterize the dynamical behavior of the vehicle, these developments settles a good base for future generations.
The document provides technical details about a transmission being supplied for a Baja vehicle, including gear ratios, details of the clutch and gear actuation mechanisms, transmission mounting orientation, lubricant capacity, and operating angles of the final driveshaft. The transmission is being provided in an assembled state with any additional needed parts supplied separately to complete the vehicle. Expanded parts like seals and fasteners are included in multiple quantities.
Different types of electric terminal devices used for transradial and transhumeral, shoulder disarticutaion prosthesis used for external powered prosthesis.
This document discusses two pain relief technologies: TENS (Transcutaneous Electrical Nerve Stimulation) units and shockwave machines. A TENS unit uses small electric signals from electrodes on the skin to block or distract from pain in several ways. Shockwave machines use high-intensity sound waves to cause microtrauma and increase blood flow to injured tissues. Both are described as non-invasive options for acute or chronic musculoskeletal pain and can help avoid opioid medications. While effective for many, their benefits depend on the individual and condition being treated.
New innovations in pain control- Anne Hartley- CSTS- March 2011kinemedics
The document discusses new innovations in pain control including an interactive neurostimulation device called InterX. It provides details on how InterX works with skin impedance and targets acupuncture points to treat acute, subacute and chronic pain. Research studies on InterX show benefits for post-op hip fracture and ankle surgery patients, including reduced pain and need for medication compared to sham groups. The document also summarizes studies on InterX for knee replacements.
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This document defines laser terminology and describes the different types and uses of lasers in medicine. It discusses how laser beams are produced and the characteristics of laser radiation. It explains the modes of action and effects of low-power laser therapy, including increased blood flow, pain relief, accelerated tissue repair, and anti-inflammatory effects. Application methods, indications, precautions, side effects, and contraindications are also outlined.
Sensation augmentation to relieve pressure sore formation in wheelchair userskix65939
The device aims to prevent pressure sores in wheelchair users by using force-sensitive resistors to measure pressure over time, and vibrating motors in an armband to provide feedback. It vibrates after 15 minutes of no movement, with increasing intensity until movement occurs. Initial testing on volunteers was successful, and further testing with wheelchair users will take place. The goal is to help relieve pressure and prevent sores through sensory augmentation.
A Continuous Variable Transmission (CVT) is a common transmission system used in low power engines as in ATV or motorcycles. This system is also used by the Baja SAE USB vehicles prototypes and motivated by the willingness to improve the performance of the prototype; I developed a final degree project which aims to describe the dynamic behavior of this system. The result was an algorithm that simulates the dynamic behavior of the vehicle given certain parameters. This project was to opt for mechanical engineering degree, earning an honorable distinction for it.
The Baja SAE Series is an annual competition organized by the Society of Automotive Engineers and has the objective to encourage undergraduate students to design, manufacture and test and All-Terrain vehicle prototype. There are almost 100 participants and it was a good opportunity to put in practice the knowledge acquired in class. In 2010 we achieved the 1st place in design, it has been the highest achievement in the whole team’s history, and it was of course a consequence of our hard work. As Powertrain head I led several tests in order to characterize the dynamical behavior of the vehicle, these developments settles a good base for future generations.
The document provides technical details about a transmission being supplied for a Baja vehicle, including gear ratios, details of the clutch and gear actuation mechanisms, transmission mounting orientation, lubricant capacity, and operating angles of the final driveshaft. The transmission is being provided in an assembled state with any additional needed parts supplied separately to complete the vehicle. Expanded parts like seals and fasteners are included in multiple quantities.
Different types of electric terminal devices used for transradial and transhumeral, shoulder disarticutaion prosthesis used for external powered prosthesis.
This document proposes a soft robotic supernumerary device (SR device) to help people with impaired hand function due to stroke. Standard exoskeleton devices are expensive, heavy, and uncomfortable. The proposed SR device would attach to the body and coordinate with the patient's motions through feedback between the human and robot. It would be made of soft silicone materials, making it cheaper to manufacture, lighter weight, and more comfortable fitting than rigid metal exoskeletons. Sensors in a glove will collect data on hand motions and forces to program the SR device to compliment the patient's limited range of motions.
Leading the world towrads robotic function in hand restorationRohan Gupta
This presentation was published in March 2017 during National Conference of Orthotic Prosthetic Association of India. This presentation includes the recent robotic research trend present in the field for the persons who are less muscle power, Hemiplegics etc.
This document summarizes a student project to design a wearable device that can suppress tremors caused by Parkinson's disease. The device uses a spring-mass absorber attached to the hand that is designed to match and absorb the frequency of tremors, which range from 2-12 Hz. Experimental results showed the absorber was effective at reducing tremors across different stiffness settings, demonstrating the potential for a self-tuning device to constantly match changing tremor frequencies. The goal of the project was to create an affordable, safe engineering solution to help address tremors experienced by Parkinson's patients.
This document discusses the development of a low-cost prosthetic hand for people who have lost the use of their arm. It aims to design a hand that can perform basic grasping and holding functions through the sensing of muscle activity in the forearm. The system would use low-cost materials and motors to open and close soft prosthetic fingers similar to an umbrella opening and closing. This would provide an affordable alternative to existing high-cost prosthetics that use complex brain-signal control. The document reviews different types of existing prosthetic hands and the mechanics, electronics, and safety aspects considered in the design project.
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Winback Tecartherapy offers rapid recovery from acute, sub acute and chronic injuries through using the latest dynamic manual therapy techniques and a unique radiofrequency technology delivered in combination. We operate at 3 frequencies – 300 khz, 500 khz and 1 mhz. Each of these frequencies have different effects on the body.
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Why WINBACK Tecartherapy?
• Delivers Rapid Pain Relief, Leading to faster restoration of function and ultimately a faster restoration to full fitness.
• A Dynamic therapy approach enabling the athlete to mobilise whilst treatment is being given to the affected area.
• Normally we’d expect the injury recovery period to be 2X faster than with manual therapy alone with a better initial healing to prevent re-injury.
• Offers ongoing professional free training programmes along with a closed peer to peer information exchange programme enabling physiotherapists across the world to share best practice, difficult cases and obtain advice and guidance for best treatment modalities.
Benefits to YOU as a physiotherapist
Reduces treatment time to 20 minutes - more patients without compromise
A relaxing and comfortable treatment for you and your patient
Difficult to treat injuries are less labour intensive to treat, with greater results
Dynamic range treatments and modalities delivered off the bed
FREE peer to peer training and support - ongoing
Membership to our global elite Academy of over 1500 physiotherapists sharing best practice in an interactive closed exchange forum
Marketing platform to launch your clinic as a Winback centre
Opportunity to earn if you became an Academy Training Centre
Training:
Winback provide comprehensive training on how to combine your own manual therapy techniques with our Tecartherapy modality. You will soon be achieving greater results, increased customer satisfaction and repeat custom. Our training comprises 3 x 2-hour training sessions: “My Start”, “My Practice” and “My Expert” usually 2-4 months apart.
There are two devices the WINBACK 1S ideal for taking on the road and offers most of the treatment options of the larger WINBACK 3SE machine and weighs 4kg and fits in the overhead lockers. The larger machine weighs 5 kg and is also portable.
Contact: Debbie@winback.com or Paul@winback.com for more information
Bionic arm is a revolutionary idea for amputees across the globe. This is as close as we can get to our natural limb. The fundamental point is to make the arm move with our brain unlike previous prosthetic upper limbs
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- The machine aims to help control violent behavior in autistic children by applying controlled, equal pressure to the child's body through inflatable wraps and airbags.
- It is intended to provide calming effects and reduce anxiety in autistic children without requiring physical human contact, as many autistic children dislike being touched.
The document discusses different types of prostheses for various body parts including craniofacial, intra-oral, extra-oral, limb, and somato prostheses. It provides details on specific prostheses such as transradial, transfemoral, transtibial and transhumeral prostheses. The summary discusses costs, options for body-powered versus electric prostheses, and types of terminal devices including hooks, prehensors, and hands.
This document discusses upper limb prosthetics. It describes the characteristics of a successful prosthesis, considerations when choosing a prosthesis, reasons for upper limb amputations, amputation levels, types of prosthetics including cosmetic, functional, body-powered, externally powered and myoelectric prosthetics. It provides details on the typical components of an upper limb body-powered prosthesis including the socket, suspension, control cables, terminal devices and any intervening joint components. It outlines the timelines for amputation and prosthetic fitting.
Raphadon provides a range of prosthetic, orthotic, and medical tourism services including artificial limbs, braces, diabetic foot care, and cosmetic prosthetics, and is owned by experienced specialists; it focuses on helping people live normal lives through the latest technologies and works with major brands worldwide to import high-quality products.
Globus is a leading manufacturer of portable electromedical devices for veterinary physiotherapy. They produce a range of devices including T.E.C.A.R therapy (thermotherapy), laser therapy, electrostimulation, ultrasound, and magneto therapy. These therapies can treat various musculoskeletal conditions in dogs, cats, and horses by reducing pain, inflammation, and edema. The document provides details on the technical specifications and applications of Globus' T.E.C.A.R, laser, and electrostimulation therapies.
The document summarizes the features and benefits of the MY TENS device, which is designed for home use transcutaneous electrical nerve stimulation (TENS) therapy. Key points:
- MY TENS is certified for safety and designed for easy home use without complicated settings. It provides a preset operating program to effectively treat most pain conditions.
- The device has an ergonomic design that allows for simple, flexible application to any part of the body. It also ensures the electrical signal is transmitted intact from the device to the patient.
- MY TENS can be discreetly used in public as it can be placed under clothes. It is also affordable and reusable through replacement of consumable parts.
this presentation contains different mechanical gait analysers , their procedure with their advantages and disadvantages. the second last slide contains references.
The MARCUS hand is an intelligent prosthetic hand that uses sensors and a microcontroller to automatically control grip based on feedback. It has position, force and slippage sensors. The microcontroller increases grip force if slippage is detected. This allows the hand to grasp objects automatically with minimal input from the user. The hand also mimics the hierarchical control of the human hand, with low-level reflexes managing individual fingers and a higher level coordinating the whole grasp.
This document discusses rehabilitation and prosthetics for upper extremity amputees. It covers:
1. Exercises that should be started after amputation to improve range of motion, strength, and endurance, and avoid contractures.
2. Techniques for performing daily activities like bathing and dressing without a prosthesis by changing hand dominance or using the mouth/feet.
3. The main components of prosthetics including the socket, harness, mechanical elbow, and different terminal devices.
4. Advances in prosthetics technology including myoelectric hands, targeted muscle reinnervation, and future considerations like osseointegration.
This document summarizes scientific evidence for the medical device Handy-Cure, which combines low-level laser, infrared, visible red light, and static magnetic fields. It provides 3 case studies showing Handy-Cure effectively treated Achilles tendonitis and lateral epicondylitis. Over 2000 studies show low-level laser therapy is safe and effective for musculoskeletal pain including arthritis, tendonitis, and carpal tunnel syndrome by reducing inflammation and pain. Handy-Cure promotes tissue regeneration, wound healing, and increased blood flow through effects on cell mitochondria and ATP production.
This document describes a sign language translation project using a glove. The goal of the project is to bridge communication between deaf/mute people and others by translating sign language gestures into text and speech using an inexpensive electronic device. The glove will contain flex sensors and an accelerometer to capture hand movements and gestures, which will then be recognized, translated, and output as text on an LCD display and audio from a speaker. A block diagram shows the overall architecture of the glove unit, detection unit, and other components like the power supply. The document discusses the motivation, prime idea, content layout, advantages, and limitations of the project.
An Equipped Sensorized Glove with Bent Sensor for Measuring Finger Flexion Selvi K – PG Scholar,
Embedded System and Technologies,
Rajeswari S – Assistant Professor,
Department of ECE,
PSN college of Engineering and Technology, Tirunelveli, India
ARENA - Young adults in the workplace (Knight Moves).pdfKnight Moves
Presentations of Bavo Raeymaekers (Project lead youth unemployment at the City of Antwerp), Suzan Martens (Service designer at Knight Moves) and Adriaan De Keersmaeker (Community manager at Talk to C)
during the 'Arena • Young adults in the workplace' conference hosted by Knight Moves.
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This document proposes a soft robotic supernumerary device (SR device) to help people with impaired hand function due to stroke. Standard exoskeleton devices are expensive, heavy, and uncomfortable. The proposed SR device would attach to the body and coordinate with the patient's motions through feedback between the human and robot. It would be made of soft silicone materials, making it cheaper to manufacture, lighter weight, and more comfortable fitting than rigid metal exoskeletons. Sensors in a glove will collect data on hand motions and forces to program the SR device to compliment the patient's limited range of motions.
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Winback Tecartherapy offers rapid recovery from acute, sub acute and chronic injuries through using the latest dynamic manual therapy techniques and a unique radiofrequency technology delivered in combination. We operate at 3 frequencies – 300 khz, 500 khz and 1 mhz. Each of these frequencies have different effects on the body.
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Why WINBACK Tecartherapy?
• Delivers Rapid Pain Relief, Leading to faster restoration of function and ultimately a faster restoration to full fitness.
• A Dynamic therapy approach enabling the athlete to mobilise whilst treatment is being given to the affected area.
• Normally we’d expect the injury recovery period to be 2X faster than with manual therapy alone with a better initial healing to prevent re-injury.
• Offers ongoing professional free training programmes along with a closed peer to peer information exchange programme enabling physiotherapists across the world to share best practice, difficult cases and obtain advice and guidance for best treatment modalities.
Benefits to YOU as a physiotherapist
Reduces treatment time to 20 minutes - more patients without compromise
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Difficult to treat injuries are less labour intensive to treat, with greater results
Dynamic range treatments and modalities delivered off the bed
FREE peer to peer training and support - ongoing
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Marketing platform to launch your clinic as a Winback centre
Opportunity to earn if you became an Academy Training Centre
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There are two devices the WINBACK 1S ideal for taking on the road and offers most of the treatment options of the larger WINBACK 3SE machine and weighs 4kg and fits in the overhead lockers. The larger machine weighs 5 kg and is also portable.
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- The device has an ergonomic design that allows for simple, flexible application to any part of the body. It also ensures the electrical signal is transmitted intact from the device to the patient.
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2. PROBLEM STATEMENT
“Essential tremor is a common neurological disease
and the most common movement disorder, which
impacts hundreds of millions of people worldwide.
Specifically, tremors are an "involuntary shaking
movement that is repeated over and over” and
when they occur in the hand, can be cumbersome
and make daily tasks difficult, such as using a
utensil, phone, or tool.” This is the description of the
problem obtained from the Grabcad Challenge.
The objective is reduce the tremors effect to enable
the patient to do day to day task without difficulty.
3. MODEL
Assumptions (risks):
1 dof model, hinge mechanism (wrist)
The system is in resonance (ωnat = 7 Hz)
Only steady state response considered
Harmonic force and response
Technical requirements:
Reduce a range of tremors (they range from a
frequency of 7 Hz with a low amplitude (0.1-0.015 cm)
to a larger amplitude at 1 Hz)
Fit under a shirt
Require no power source
Permit full thumb, finger, wrist and forearm motion
4. MAIN IDEA OF THE SOLUTION
Reduce amplitudes of the tremors:
To illustrate this part, harmonic response for a forced-harmonic
vibration is recalled:
𝑋 =
𝑓0
𝑘
1−𝑟2 2+ 2𝜁𝑟 2
In this sense, to reduce resonance effect the following can be
done:
Natural frequency of the system must be reduced (ωnat << ω),
increasing the mass. But there is a limit since a lot of weight can be
uncomfortable for the patient.
Increasing the stiffness will reduce the amplitude of the response
since it is inversely proportional to it.
Overdamp the system: increasing the damping to a value above the
critical. In this case even if natural frequency is equal to the
frequency of the force (r=1), an amplification factor of 0.5 can be
achieved.
5. PROPOSAL 1
OVERDAMP THE SYSTEM
The overall concept is a glove that have fibers
made of specific material and its good appealing.
Use of viscoelastic materials that give the desired
behavior (like thermoplastic polyurethane). It is
expected that if strain rate increases, the material
absorb more vibration energy, same way as a
damper do.
Use flexible dampers, that are within the glove (is
hidden) and moves when wrist moves. It is
important that the gloves wrap the stem of the
damper to avoid buckling during compression.
6. PROPOSAL 1
This picture represent the
core of the glove.
The red pieces are rigid
and made of plastic, this
helps the fixation of the
dampers. It reduces
relative movement
between the hand and
the dampers.
The elastic property of
the glove fibers helps to
attach the entire
assembly to the hand.
The hand is able to move
freely for smooth and
slow movements.
7. PROPOSAL 1
The elastic fibers of the
glove attach the stem to the
hand and fingers,
preventing the buckling
during compression.
The green piston-cylinder
set reduces wrist tremors
and the blue ones reduce
the finger tremors.
The idea is that this core
design will be not visible for
the patient since lies within
the glove.
The distribution of the sets
helps to reduce movements
in a variety of directions.
8. PISTON-CYLINDER SET
Both stem and cylinder
are made of flexible
materials (polymers). In
the case of the stem it
should be able to handle
compression and tension
in an elastic range.
The energy of the movement of the wrist is dissipated
through the viscous forces generated between the fluid
within the cylinder and the piston (similarly as in a
damper).
The geometry of the piston can be changed to obtain
the desired damping and even a non-Newtonian fluid
can be used to obtain a very high damping at regular
load rates.
9. PROPOSAL 2
STIFF THE SYSTEM
In this case it is desirable to
stiff the hand when tremors
occurs, but the hand is
flexible when not.
It can be done using small
tubes rounded by a wire
and filled with magnetic fluid
(represented in orange in
the picture).
When a current flow pass
through it, a magnetic flux is
induced and the fluid
“solidifies”.
The control system is able
to decided what activates
this function or even enable
the user to decide.
Control
10. PROPOSAL 2
STIFF THE SYSTEM
Despite for this idea a power source is needed I
decided to share anyway. Solar cells, the cell phone
energy or charger that take advantage of the hand
movement, can be used to supply energy to this
solution.
The main control can communicate with the
smartphone through an app that tells how frequent
the patient suffers tremors, check battery status and
other useful functions.
11. CONCLUSIONS
Reducing the natural frequency to 1 Hz will imply a
mass increase of 34kg, which is very high value.
After some research it was seen that what unable
people to perform day-to-day activities (like writing) is
actually the amplitude of the tremor, if this amplitude is
reduced it will easier to handle daily tasks.
In general a solution that over damps the hand system
will help to reduce tremors.
Another possibility is to create a device that suppress
the electrical signals that induces the involuntary muscle
movements. In this case the signal must be of high
amplitude or a specific frequency to be easy to detect.