Jd
J. de Jong
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Improve the mobility of a tremor suppression mechanism for the next generation of anti-tremor orthosis to be marketed in ~2024
Redesigning an anti-tremor orthosis for increased wrist mobility
People who suffer from tremor, experience uncontrollable, involuntary movements. Depending on the underlaying cause, these movements occur during rest, or simultaneous with voluntary movements.
STIL is a YES!Delft based, med-tech startup that is developing a non-invasive, anti-tremor orthosis that helps people with tremors in their upper limbs. The current anti-tremor orthosis helps with the reduction of upper limb tremor. However, it limits the mobility of the user’s hand and wrist. Motion in the Wrist Radial and Ulnar Deviation (WRUD) degree of freedom are limited due to the way the orthosis is designed.
By redesigning several parts of the orthosis, a new degree of freedom has been added to the device.
This increased mobility makes the orthosis more comfortable in daily use, and could even be beneficial to the suppression of upper limb tremor.
By integrating a small mechanical damper, the friction in the WRUD degree of freedom can be controlled.
A system of interlocking parts, supported by dampers ensure a durable and smooth rotation when the wrist is moved.
The fully functional prototype was manufactured and handed over to STIL bv for further testing, along with recommendations to optimize the design . ...
STIL is a YES!Delft based, med-tech startup that is developing a non-invasive, anti-tremor orthosis that helps people with tremors in their upper limbs. The current anti-tremor orthosis helps with the reduction of upper limb tremor. However, it limits the mobility of the user’s hand and wrist. Motion in the Wrist Radial and Ulnar Deviation (WRUD) degree of freedom are limited due to the way the orthosis is designed.
By redesigning several parts of the orthosis, a new degree of freedom has been added to the device.
This increased mobility makes the orthosis more comfortable in daily use, and could even be beneficial to the suppression of upper limb tremor.
By integrating a small mechanical damper, the friction in the WRUD degree of freedom can be controlled.
A system of interlocking parts, supported by dampers ensure a durable and smooth rotation when the wrist is moved.
The fully functional prototype was manufactured and handed over to STIL bv for further testing, along with recommendations to optimize the design . ...
People who suffer from tremor, experience uncontrollable, involuntary movements. Depending on the underlaying cause, these movements occur during rest, or simultaneous with voluntary movements.
STIL is a YES!Delft based, med-tech startup that is developing a non-invasive, anti-tremor orthosis that helps people with tremors in their upper limbs. The current anti-tremor orthosis helps with the reduction of upper limb tremor. However, it limits the mobility of the user’s hand and wrist. Motion in the Wrist Radial and Ulnar Deviation (WRUD) degree of freedom are limited due to the way the orthosis is designed.
By redesigning several parts of the orthosis, a new degree of freedom has been added to the device.
This increased mobility makes the orthosis more comfortable in daily use, and could even be beneficial to the suppression of upper limb tremor.
By integrating a small mechanical damper, the friction in the WRUD degree of freedom can be controlled.
A system of interlocking parts, supported by dampers ensure a durable and smooth rotation when the wrist is moved.
The fully functional prototype was manufactured and handed over to STIL bv for further testing, along with recommendations to optimize the design .
STIL is a YES!Delft based, med-tech startup that is developing a non-invasive, anti-tremor orthosis that helps people with tremors in their upper limbs. The current anti-tremor orthosis helps with the reduction of upper limb tremor. However, it limits the mobility of the user’s hand and wrist. Motion in the Wrist Radial and Ulnar Deviation (WRUD) degree of freedom are limited due to the way the orthosis is designed.
By redesigning several parts of the orthosis, a new degree of freedom has been added to the device.
This increased mobility makes the orthosis more comfortable in daily use, and could even be beneficial to the suppression of upper limb tremor.
By integrating a small mechanical damper, the friction in the WRUD degree of freedom can be controlled.
A system of interlocking parts, supported by dampers ensure a durable and smooth rotation when the wrist is moved.
The fully functional prototype was manufactured and handed over to STIL bv for further testing, along with recommendations to optimize the design .
DAMEN tugs can be found in nearly any port or terminal around the world. Operating in ports and terminals requires the tugs to be highly efficient in ship handling in order to quickly escort larger vessels. To predict the escort capabilities of a tug, DAMEN has developed the computer program DAMEN TUGSIM. Since the tool is becoming a decisive tool in the design process, DAMEN wants to strengthen their confidence in the simulation tool TUGSIM by gaining more understanding related to the thruster performance. The goal of this study is to quantify and increase understanding into the following regions: Thruster performance in oblique flow; hydrodynamic interaction effects encountered between thrusters; hydrodynamic interaction effects encountered between the thruster and hull. Recently performed model tests of the RSD (Reverse Stern Drive) tug provided the opportunity to gain insight into these topics and to derive prediction models. Mathematical models are developed and finally implemented in TUGSIM. Implementation of the new models in TUGSIM enabled to harvest new insight into escort capabilities of the RSD tug, especially into the braking capabilities.
...
DAMEN tugs can be found in nearly any port or terminal around the world. Operating in ports and terminals requires the tugs to be highly efficient in ship handling in order to quickly escort larger vessels. To predict the escort capabilities of a tug, DAMEN has developed the computer program DAMEN TUGSIM. Since the tool is becoming a decisive tool in the design process, DAMEN wants to strengthen their confidence in the simulation tool TUGSIM by gaining more understanding related to the thruster performance. The goal of this study is to quantify and increase understanding into the following regions: Thruster performance in oblique flow; hydrodynamic interaction effects encountered between thrusters; hydrodynamic interaction effects encountered between the thruster and hull. Recently performed model tests of the RSD (Reverse Stern Drive) tug provided the opportunity to gain insight into these topics and to derive prediction models. Mathematical models are developed and finally implemented in TUGSIM. Implementation of the new models in TUGSIM enabled to harvest new insight into escort capabilities of the RSD tug, especially into the braking capabilities.