123results about How to "Reduce tremor" patented technology

A peripheral nerve stimulator can be used to stimulate a peripheral nerve to treat essential tremor, Parkinson tremor, and other forms of tremor. The peripheral nerve stimulator can be either a noninvasive surface stimulator or an implanted stimulator. Stimulation can be electrical, mechanical, or chemical. Stimulation can be delivered using either an open loop system or a closed loop system with feedback.

Method and neuroprosthetic device for monitoring and suppression of pathological tremors in a user through the neurostimulation of the afferent pathways to the brain, which comprises wearable elements placed over the parts of the body affected by tremor, wherein said wearable elements (1) have sensors selected from bioelectric sensors (3) generating a bioelectrical signal characterization of tremor, biomechanical sensors (4) generating a biomechanical signal characterization of tremor and a combination thereof, a programmable electronic device (9) comprised of a control, acquisition and processing module of the characterization signals, and a signal generator for the afferent stimulation based on the bioelectrical, biomechanical or combination of both signal characterization and stimulation electrodes (8) which transmit the neuromodulation signals to the afferent pathways projecting into the central nervous system to modulate the activity of the neural structures responsible for tremor generation.

Apparatus for tremor reduction including a sensor for sensing muscle movements, a stimulation/recording electrode unit for providing Functional Electrical Stimulation (FES) to a muscle, the stimulation/recording electrode unit including a filter for filtering around a tremor frequency to ignore slow movements and high frequency noise associated with the muscle movements that were sensed, and a processor for generating a set of relationships of muscle response to the FES, called FES-muscle-response relationships, and for selecting a new FES for application to the muscle in accordance with acquired knowledge of the FES-muscle-response relationships. An apparatus and a helmet for effecting proper alignment and application of a stimulation/recording electrode to a patient's arm and neck region, respectively, are also described.

A system and apparatus for enabling independent, highly reliable and accurate self-application of an anti-tremor means by a disabled patient, without requirement for application fixtures, wherein anti-tremor means comprises a single unit, self adhesive stimulation and recording electrode with an integrated supply of energy and a control unit, further comprising an alignment, and application means for applying said anti-tremor means configured to enable independently self application by a severely handicapped patient, wherein system and method for tremor reduction is by means of closed-loop functional electrical stimulation, including a sensor for sensing muscle movements, and Functional Electrical Stimulation (FES) apparatus for providing FES to a muscle, the FES apparatus being in communication with the sensor via a band pass filter for filtering around a tremor frequency to ignore slow movements and high frequency noise.

The invention relates to a multi-object optimized space manipulator trajectory planning method. Aiming at trembling produced in the moving process of a space manipulator and disturbance to a platform,optimal path planning is conducted; the method adopts a multi-object chaotic particle swarm optimization algorithm to optimize joint trajectory parameters in the manipulator moving process, so that reaction of movement of the manipulator to the platform is reduced, the peak value of control moment is reduced, and the disturbance of the platform and the trembling of the manipulator are reduced. The planned manipulator trajectory is smooth and continuous, the multi-object optimized space manipulator trajectory planning method can be applied to a multi-degree-of-freedom space manipulator. The multi-object optimized space manipulator trajectory planning method has the characteristics of high universality, good robustness, high convergence speed and the like.

The invention discloses a spline curve interpolation algorithm for high quality processing, and the spline curve interpolation algorithm for high quality processing comprises the following steps: quickly pre-interpolating the numerical control machining curve, recording the length of the interpolation path and the maximum/minimum value of the acceleration/deceleration process; calculating the maximum acceleration and most much acceleration of the acceleration/deceleration process, having subsection on the acceleration/deceleration process, calculating quadratic polynomial speed equations of each section; obtaining the speed equation according to the pre-interpolating stage at the real time interpolating stage, adopting the strategy that the theory chord length is close to the practical chord length for building the construction function, estimating the initial value of the interpolation parameter and building the parabolic interpolation polynomial, using the Newton iteration method for exactly calculating the interpolation parameter. The speed plan adopts five-section S curve acceleration/deceleration control algorithm for guaranteeing continuous change of the speed and accelerated speed, the bounded change of the accelerated acceleration speed and the running stability of the machine tool; the calculation of the interpolation parameter adopts the combination of parabolic interpolation method and Newton iteration method for controlling the feeding speed fluctuation of the real time interpolation in the ideal level and satisfying the high quality processing requirement.

The invention refers to a shift transmission synchronizer (1), comprising a synchronizer shell (4), a sliding sleeve (9) and at least one synchronizer ring (11,12), wherein the synchronizer shell is torsion resistant and is axially fastened to a transmission shaft, and the synchronizer shell is provided with an external tooth part (8) equipped with one or more vacant positions (5,6,7). The sliding sleeve (9) is provided with an inner tooth part (10) and can be axially and slidingly connected with a shift gear. In addition, the at least one synchronizer ring (11,12) possesses one or more axially oriented raised projections (13,14) which extend to the vacant positions (5,6,7), wherein one or more raised projections (13,14) possess radial and axial metal outside surfaces (15 to 18), and the radial metal outside surfaces (15,16) are provided with a damping coating (20).

The invention discloses a fixed fixture for glass grinding and a using method thereof. The fixed fixture comprises a telescopic outer frame assembly, wherein the telescopic outer frame assembly is composed of a plurality of main fixing frames, a first telescopic frame and a second telescopic frame, telescopic frame installation grooves are formed in the main fixing frames, and one ends of the first telescopic frame and the second telescopic frame are correspondingly arranged in the telescopic frame installation grooves. The main fixing frames, the first telescopic frame and the second telescopic frame are arranged, transmission is conducted by using a gear and a rack, the telescopic adjustment of the telescopic outer frame assembly is achieved, so that the fixed fixture can be adjusted according to the specifications and sizes of different glass, and the application scope of the fixed fixture is increased; and a clamping fixed block and a clamping floating block are arranged on an installation plate, the glass is positioned and clamped, the slipping and chattering are prevented during glass processing, the whole device is simple and compact in structure and easy to use, the production efficiency of glass processing can be improved, and the quality of glass processing is ensured.

Systems, devices, and methods for stimulating peripheral nerves in the fingers or hand to treat tremor are described. For example, a wearable ring device for delivering electrical stimulation to sensory nerves in a patient's finger can include an annular ring having a plurality of electrodes and a detachable unit having a power source and a pulse generator.

The invention discloses a shock-absorbing elasticity-increasing tennis racket, squash racket or badminton racket, which comprises a racket frame 1 and a handle 2 extending downwards from the racket frame 1. The racket frame is provided with threading holes 3. The tennis racket, squash racket or badminton racket is characterized in that a plurality of elastic sheets 4 capable of straining racket wires towards the outer sides of the racket frame 1 are arranged between the racket wires and the racket frame 1; the elastic sheets 4 can be clipped in the grooves 9 of the racket frame 1, and can be taken out conveniently; and the elastic sheets 4 are provided with holes 6, and are made from carbon element containing artificial fiber materials. With this structure, the shock of the racket frame and the racket wires is greatly lowered through the elastic sheets in an elastic stress state after the racket is used for batting, the sweet spot is increased, the hand feeling is soft, excellent elasticity is maintained with high-poundage straining wires, buffering for the wires is good and the consumption of the wires is reduced; correspondingly-required elastic sheets, and the elastic sheets at different parts of the racket frame 1 can be more individually configured for players; in addition, the shock-absorbing elasticity-increasing tennis racket, squash racket or badminton racket has a simple structure, high reliability and low production cost.

The invention discloses a machining method for an R groove in a guide plate of a marine diesel frame. On a numerically controlled planer-type milling machine, a compound boring-milling tool is mounted on a shock-proof tool holder connected to a power spindle accessory, and is controlled to move radially or axially through a numerically controlled program instruction, so as to fulfill automatic cutting of the R groove. The compound boring-milling tool comprises a tool body, a plurality of tool holders and a plurality of blades, wherein the tool holders and the blades are fixed at the periphery of the tool body and uniformly distributed; the blades are mounted on the tool body through the tool holders, and are rhombus-shaped; the angle of the tool noses of the blades are 55 degrees; the pointcut of each tool nose in the R groove for cutting is small, so as to realize overcutting prevention of the blades, low tremble of the tool and high degree of finish of a machined surface. The machining method has the advantages that efficient continuous automatic machining is realized; tremble during machining is reduced effectively; no machined trace is formed; the degree of finish of the machined surface is improved; the service life of the tool is prolonged; the machining cost as well as the labor intensity is reduced.

The invention discloses a precision machining method for high-precision U-shaped low-rigidity bearing block type parts. The method comprises steps as follows: 1, materials are prepared; 2, rough machining is performed, the parts are machined and shaped, and all outlines reserve the machining allowance; 3, stress ageing is eliminated, and the residual stress produced by rough machining is eliminated; 4, semi-finish machining is performed, and except that assembling datum surfaces, mounting holes of bearings, end surfaces of the bearings and important mounting connecting holes reserve the machining allowance, other machining characteristics meet size requirements; 5, stress ageing is eliminated again, and the residual stress produced by semi-finish machining is eliminated; 6, finish machining is performed on the assembling datum surfaces, the mounting holes of the bearings, the end surfaces of the bearings and the important mounting connecting holes. The datum-uniform and datum-first principles are adopted in the process, auxiliary tools are designed to reduce trembling and improve the rigidity of the parts, meanwhile, the influence of machining elastic deformation is considered in control on central high sizes, and certain correction margins are reserved. With the method, the percent of pass of the high-precision U-shaped low-rigidity bearing block type parts is guaranteed.

The invention discloses a table tennis racket, a tennis racket, a badminton racket or a squash racket with a shock absorption grip. The racket comprises a batting board 1 and a grip sheet 2. The racket is characterized in that: an elastic device 3 in a stress state is arranged between the grip sheet 2 and the batting board 1. When the shock of the racket is transferred to the position of the grip after the racket strikes a ball, the elastic deformation of the elastic device 3 consumes the shock energy and damps the strength of the shock, and the elastic device does not reflect the shock and does not affect the batting shock information transferred to a hand from the outer side of the grip sheet 2 by the batting board 1 at the same time. The elastic device 3 is in the elastic stress state, so that the elastic device has higher absorption effect on the shock and plays a role in supporting the grip sheet, and the strength of the grip is not excessively reduced. The problems of poor handfeel of the racket, tennis elbow formation and the like caused by excessive shock of the racket are solved by using low cost and simple production processes.

A spacing rod comprises a spacing rod body, a fixed wire clamp and a fastening bolt, wherein the spacing rod body comprises a base and a dual-head bolt, wherein one end of the dual-head bolt is detachably and fixedly connected with the base, the other end of the dual-head bolt is detachably and fixedly connected with one end of a wire clamp body of the fixed wire clamp, the fixed wire clamp comprises the wire clamp body, a wire clamp press cover and a connection piece, the other end of the wire clamp body is detachably and fixedly connected with the wire clamp press cover by the connection piece, an adjustable threaded hole is processed in the wire clamp press cover and is adaptive to the fastening bolt, and the fastening bolt is detachably and fixedly connected with the wire clamp press cover by the adjustable threaded hole.

The invention discloses an electric vehicle rollover prevention device which is characterized by comprising a passive telescopic buffer mechanism, the passive telescopic buffer mechanism is connectedwith a hydraulic shock absorber in series, one end of the hydraulic shock absorber is connected with an axle of an electric vehicle, and the other end of the hydraulic shock absorber is connected withthe passive telescopic buffer mechanism; the passive telescopic buffer mechanism comprises a supporting plate, the supporting plate is connected with a hydraulic damper, a first air chamber is arranged on the other face of the supporting plate, and the end, deviating from the supporting plate, of the first air chamber is connected with a frame of the electric vehicle ; the shape of the first airchamber changes along with pressure; and the frame of the electric vehicle is further provided with a second air chamber, the first air chamber is communicated with the second air chamber, the secondair chamber is further communicated with a passive inflator, one end of the inflator is connected with the axle, and the other end of the inflator is connected with the frame. According to the scheme,the device has the beneficial effects that the structure is simple, the design is reasonable, the electric vehicle can be prevented from rolling over when running on a bumpy road surface, and the electric vehicle can also be prevented from rolling over when turning.

The invention relates to a food processing machine with a good noise reduction effect. The food processing machine with the good noise reduction effect comprises a machine base, a stirring cup and a cup lid, a motor is arranged in the machine base, the stirring cup is arranged on the machine base, and a crushing blade driven by a motor is arranged in the bottom of the stirring cup; an opening of the stirring cup is covered with a cup lid; a disturbed flow assembly is further included, the disturbed flow assembly comprises a flow guiding member and at least two disturbed flow ribs integrally formed on the cup wall of the stirring cup, the disturbed flow ribs comprise upstream surfaces and back flow surfaces, and the flow guiding member is disposed by being attached to the back flow surfaceof one of the disturbed flow ribs to for eccentric water flow. By adopting the technical scheme, eccentric liquid flow not using a stirring center as a center can be formed in a cup body, and the eccentric liquid flow interacts with conventional liquid flow centered on the stirring center, increase in turbulence inside the cup body is increased, constant change of voice and countenance and frequency of noise is caused, the resonance of the highest noise is interfered, and a role in reducing noise is played.

The invention belongs to the technical field of unmanned boats, and particularly discloses a posture-adjustable flexible double-body unmanned boat. The posture-adjustable flexible double-body unmannedboat comprises a power propelling device, wherein the two sides of the power propelling device are provided with symmetrical double-air-cushion type cylindrical supporting body devices; a spring damping device connected with a control device is arranged on the power propelling device, and a pair of telescopic devices connected with the double-air-cushion type cylindrical supporting body device isarranged on the power propelling device; and the two sides of the power propelling device are provided with the symmetrical double-air-cushion type cylindrical supporting body devices, so that the sailing stability of the unmanned boat is ensured; the power propelling device and the double-air-cushion type cylindrical supporting body devices are connected through a flexible structure, the stability of the unmanned boat is improved, the tail of a deck is connected with the telescopic devices, the navigation speed and the posture can be adjusted at any time, the adjustability of the unmanned boat is more flexible, the design of the spring damping device plays a good role in buffering and damping a control platform, and the abrasion between the precise parts on the control platform is reduced.

The embodiment of the invention discloses an ultrahigh-voltage positive and negative composite pulsed electric field generating circuit, and relates to the field of high-voltage pulse treatment. The circuit mainly comprises a power module, an electric field generating module, a driving circuit, a control module and an interface circuit. The power module is used for providing positive and negativepower supplies, the electric field generating module is used for increasing the supply voltage to 3000V so as to provide positive and negative 3000v bipolar voltage to reduce muscle tremor, the interface circuit is connected with external detection equipment, and the control module is used for acquiring and processing real-time data, and a driving signal is generated to drive the electric field generating module to operate. The problems of inaccurate tumor cell treatment and serious muscle tremor in existing tumor treatment technology can be solved, and the treatment efficiency of tumor cellsis further improved.

The invention relates to a medicine for treating Meniere's disease, which is prepared from the following active pharmaceutical ingredients: Chinese wolfberry, Chinese yam, uncaria, gastrodia tuber, tuckahoe, rhizoma alismatis, schisandra fruit, licorice root, vinegar roasted magnet and stir-fried spina date seed. The active pharmaceutical ingredients can be made into tablets, pills, capsules and oral liquids. The medicine can condition the function balance of the liver, spleen and kidney, and has the advantages of favorable treatment effect and no toxic or side effect, and the effective treatment rate is 89.7%.