Abstract:
The invention relates to a method and a device, suitable for the measurement of quantitative photon absorption coefficient in tissue, wherein the device comprises a first light source, suitable for generating photons, a light measurement element suitable for measuring at least one of : the intensity, the frequency, the frequency deviations and phase shift of the light to be measured, an ultrasound source, suitable for the generation of a defined sound wave pattern in a defined volume element within the tissue, wherein the ultrasound source is suitable for labelling the light, originating from the first light source or a second light source that enters the defined volume element within the tissue, and an ultrasound measurement element, suitable for measuring ultrasound, originating from the defined volume element within the tissue and generated by the light of the first light source that enters the defined volume element within the tissue.
Abstract:
The present invention relates to a polymer composition comprising a blend of a multi-block thermoplastic elastomer comprising alternating hard polymeric blocks and soft polymeric blocks, and a polymer comprising a metal of Group 14 of the Periodic System of the Elements. The present invention also relates to a membrane comprising said blend and its application in separation processes, ion transport processes, ultrafiltration and nanofiltration.
Abstract:
The invention relates to the field of medical science, in particular to technology directed at repairing defects in living, preferably human, tissue. The present invention provides a method for inducing differentiation of multipotent cells to a desired cell type, as well as a method for repairing a tissue defect in a human or animal patient using the concept of said method for inducing differentiation of multipotent cells. The invention further relates to a kit for carrying out the method for repairing a tissue defect.
Abstract:
Described herein are novel amide copolymers wherein the amide segments have a length of at least three amide groups of which its length is substantially uniform and which copolymers have a glass transition temperature of less than 0°C. A copolymer according to the invention displays a fast crystallization from the melt, and a modulus that is little dependant on the temperature in the temperature region between glass transition and melting temperature. A polymer according to the invention can easily be melt processed by extrusion, injection molding and fiber spinning. A copolymer according to the inventions may be transparent, has a high fracture strain and a high elasticity.
Abstract:
A device for moving a first object relative to a second object, which device comprises a first part, which can be fixed to the first object, and a second part, which can be fixed to the second object. The first part comprises an elongated portion, along which the second part can move, which second part is provided with a clamping member, which is capable of clampingly engaging the elongated portion. The clamping member comprises shape memory metal, which gives the clamping member a clamping shape or a releasing (non-clamping) shape, depending on the temperature of the shape memory metal. The device may be suitable for being implanted into a human or animal body, whereby the first object is a first bone portion and the second object is a second bone portion, which bone portions are to be moved relative to each other.
Abstract:
A leg prosthesis provided with a knee joint, which is on the one hand attached to an upper leg part and which is on the other hand attached to a lower leg part. The lower leg part can pivot with respect to said upper leg part, from an extended position to a flexed position. The knee joint is constructed in such a manner that the lower leg part and the upper leg part are initially moved away from each other when flexing from a substantially extended position. The knee joint may comprise four parallel pivot axes, whereby two lower leg pivot axes occupy a fixed position with respect to the first lower leg part and two upper leg pivot axes occupy a fixed position with respect to the upper leg part. Connecting elements pivotally connect each lower leg pivot axis to an upper leg pivot axis.
Abstract:
The invention relates to a handheld laser-based perfusion imaging apparatus comprising a light source and an imaging device which are arranged in a fixed orientation to each other in said apparatus. The light source is configured for projecting a beam of coherent light onto a measurement field at a predetermined distance spaced apart from the apparatus. The imaging device is configured for recording speckle intensity maps of the measurement field and/or images of Doppler shifted light of the measurement field. The light source is configured to provide a substantially spherical wavefront or a substantial planar wavefront, at least at the measurement field. Preferably, the apparatus with the light source that provides a substantial planar wavefront, comprises a gimbal mount. Furthermore, the invention relates to a method for measuring a perfusion in a tissue using the handheld laser-based perfusion imaging apparatus as described above.
Abstract:
The invention provides a system (1) comprising a body wearable unit (1000), with one or more cameras (200), a control system (300), and an electrical power source (400). The invention further provides a method for generating wearer data using the system (1), wherein the method comprises monitoring with one or more cameras (200) a user wearing the wearable unit (1000) and providing a related camera signal; generating wearer data based on the related camera signal, wherein the wearer data comprise one or more of (i) wearer posture related data and (ii) wearer movement related data.
Abstract:
In a method and system for determining a foot progression angle of a foot, an inertial sensor is connected to the foot. The method comprises a processing system performing the steps of: acquiring, from the sensor, angular velocity data and acceleration data in a sensor coordinate system; identifying, based on said data, a first zero-velocity phase and a subsequent second zero-velocity phase; and during a step of the foot: mapping the angular velocity to a foot coordinate system; integrating the angular velocity to obtain an orientation of the foot direction; mapping the acceleration to the foot coordinate system; subtracting the acceleration of gravity from the acceleration to obtain a corrected acceleration; integrating the corrected acceleration to obtain a linear velocity; integrating the linear velocity to obtain a foot position; and determining the foot progression angle between the orientation of the foot at the first zero-velocity phase or the second zero-velocity phase, and a stepping direction of the foot.
Abstract:
A photodetector is provided for sensing radiation in middle and long wave infrared domain. The sensor has a sensor layer of a first material having a first conductivity type and a first permittivity in which the shortest distance of any point in the sensor layer to an adjacent layer having a second conductivity type and a second permittivity lower than the first permittivity is 20 nanometres or less. Conductivity type may be semiconductor n-type or p-type or insulator. If, for example, a silicon sensor layer is sandwiched between two silicon oxide layers, the sensor layer of preferably p-type semiconductor has a maximum thickness of 40 nanometres. If a p-type layer of a first material is sandwiched between a dielectric layer with the second permittivity and an n-type layer of the first material, the maximum thickness is 20 nanometres. Spaced apart, two contacts are provided in contact with the sensor layer.