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Energy usage in injection molding simulations

Methods, systems, and apparatus, including computer program products, for determining energy indicator values for a plurality of thermoplastic materials. An energy indicator value represents expected energy requirements for performing an injection of the material in a mold cavity. An injection of each of a plurality of thermoplastic materials in a first modeled mold cavity is simulated. A respective value of a first expected energy parameter is determined for each of the plurality of thermoplastic materials based on the simulated injections. A respective energy indicator is determined, for each of the plurality of thermoplastic materials, based at least on the corresponding value of the first expected energy parameter. The respective energy indicator value of one or more of the plurality of thermoplastic materials is presented.




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Electrical-thermal co-simulation with joule heating and convection effects for 3D systems

In a method for simulating temperature and electrical characteristics within an circuit, a temperature of at least one volume within the circuit as a function of a resistance within the at least one volume is repeatedly calculated and the resistance as a function of the temperature is repeatedly calculated until the temperature is within a predetermined tolerance of a previous temperature result and until the resistance is within a predetermined tolerance of a previous resistance result. Once the temperature is within a predetermined tolerance of the previous temperature result and the resistance is within a predetermined tolerance of the previous resistance, then an output indicative of the temperature is generated.




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Systems and methods for phase predictive impedance loss model calibration and compensation

The systems and methods of the present disclosure calibrate impedance loss model parameters associated with an electrosurgical system having no external cabling or having external cabling with a fixed or known reactance, and obtain accurate electrical measurements of a tissue site by compensating for impedance losses associated with the transmission line of an electrosurgical device using the calibrated impedance loss model parameters. A computer system stores voltage and current sensor data for a range of different test loads and calculates sensed impedance values for each test load. The computer system then predicts a phase value for each load using each respective load impedance value. The computer system back calculates impedance loss model parameters including a source impedance parameter and a leakage impedance parameter based upon the voltage and current sensor data, the predicted phase values, and the impedance values of the test loads.




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Computer system, program, and method for assigning computational resource to be used in simulation

The cost necessary for introducing and maintaining a development environment that includes multiple simulators is suppressed, and a sharing of designing information is promoted, to make parameter adjustment of simulators easy. Provided is a service that unifies development environment on a computer provided with: a working computer system that can guarantee that there is no leaking of designing files; a user behavior monitoring system that collects utilization history of simulators or software, for each of the users, and selects development process of each of the users from the collected information; and a dynamic computational-resource distribution system that can conduct an automatic optimization of a complex simulation configuration, from information collected by the aforementioned user behavior monitoring system.




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Circuit partitioning and trace assignment in circuit design

Methods and apparatuses for circuit design are described. In one embodiment, the method comprises determining a distribution of nets of a circuit, the distribution of the nets comprising numbers of blocks that each of the nets has in each of a plurality of partitions of the circuit in a partitioning solution, moving a first block of the circuit from a source partition to a destination partition to modify the partitioning solution, and updating the distribution of the nets after the moving.




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Interactive determination of coiling parameters

A coiling parameterization tool includes a processor and a display for displaying values of lumen volume, packing and coiling parameters for filling a lumen in relation to a desired packing. The processor is configured to detect a change in one of the displayed values and, in response to the change, to automatically evaluate, change and display remaining values displayed on the display.




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Device for the collection and processing of information relating to the exposure of one or more persons to one or more products of chemical or biological origin and method for the use of such a device

A device for the collection and processing of information relating to the exposure of one or more persons to one or more products of chemical or biological origin has: at least one coded sensor for automatic or semi-automatic identification of a person likely to be exposed to at least one product,at least one coded sensor for the collection of information relating to the handling of at least one product by the person likely to be exposed to the product,at least one sensor for validating the information collected by the identification and collection sensors,at least one module for reading at least one coded sensor, anda module for processing information collected by the sensors.




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Surface normal computation on noisy sample of points

Various technologies described herein pertain to computing surface normals for points in a point cloud. The point cloud is representative of a measured surface of a physical object. A point in the point cloud can be set as a point of origin, and points in the point cloud can be modeled as electrostatic point charges. Moreover, a point of least electrostatic potential on a sphere centered at the point of origin can be computed as a function of the electrostatic point charges. Further, unit vector with a direction from the point of origin to the point of least electrostatic potential on the sphere can be assigned as a normal for the point of origin.




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System and method for forecasting production from a hydrocarbon reservoir

A system and method is taught to substantially automate forecasting for a hydrocarbon producing reservoir through integration of modeling module workflows. A control management module automatically generates static and dynamic offspring models, with static and dynamic modeling software, until a performance objective associated with the forecasting of the reservoir is satisfied. The performance objective can include an experimental design table to determine a sensitivity of a particular parameter or can be directed towards reservoir optimization, i.e., ultimate hydrocarbon recovery, net present value, reservoir percentage yield, reservoir fluid flow rate, or history matching error.




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Space-time surrogate models of subterranean regions

Methods for creating and using space-time surrogate models of subsurface regions, such as subsurface regions containing at least one hydrocarbon formation. The created surrogate models are explicit models that may be created from implicit models, such as computationally intensive full-physics models. The space-time surrogate models are parametric with respect to preselected variables, such as space, state, and/or design variables, while also indicating responsiveness of the preselected variables with respect to time. In some embodiments, the space-time surrogate model may be parametric with respect to preselected variables as well as to time. Methods for updating and evolving models of subsurface regions are also disclosed.




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Method and system for efficient emulation of multiprocessor memory consistency

A method (and system) of emulation in a multiprocessor system, includes performing an emulation in which a host multiprocessing system of the multiprocessor system supports a weak consistency model, and the target multiprocessing system of the multiprocessor system supports a strong consistency model.




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Hypothesis derived from relationship graph

A method and apparatus for data processing. The method calculates correlations between a plurality of attributes in a dataset. The attributes are factors involved in transaction processing. The method generates a relationship graph by using the plurality of attributes and the correlations between the plurality of attributes; and extracts a sub-graph from the relationship graph to represent a hypothesis. The hypothesis describes the impacts of the factors on the transaction processing. Also provided is an apparatus for implementing the above data processing method.




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Method of providing data included in building information modeling data file, recording medium therefor, system using the method, and method of providing data using building information modeling server

A method of providing data included in a building information modeling (BIM) data file using a server is provided. The method includes retrieving mapping data corresponding to a user request, extracting data corresponding to at least one entity mapped to the mapping data from the BIM data file, and transmitting the extracted data to a client.




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Leveraging transactional memory hardware to accelerate virtualization and emulation

Various technologies and techniques are disclosed for using transactional memory hardware to accelerate virtualization or emulation. State isolation can be facilitated by providing isolated private state on transactional memory hardware and storing the stack of a host that is performing an emulation in the isolated private state. Memory accesses performed by a central processing unit can be monitored by software to detect that a guest being emulated has made a self modification to its own code sequence. Transactional memory hardware can be used to facilitate dispatch table updates in multithreaded environments by taking advantage of the atomic commit feature. An emulator is provided that uses a dispatch table stored in main memory to convert a guest program counter into a host program counter. The dispatch table is accessed to see if the dispatch table contains a particular host program counter for a particular guest program counter.




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Computer-implemented systems and methods for testing large scale automatic forecast combinations

Systems and methods are provided for evaluating performance of forecasting models. A plurality of forecasting models may be generated using a set of in-sample data. Two or more forecasting models from the plurality of forecasting models may be selected for use in generating a combined forecast. An ex-ante combined forecast may be generated for an out-of-sample period using the selected two or more forecasting models. The ex-ante combined forecast may then be compared with a set of actual out-of-sample data to evaluate performance of the combined forecast.




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Apparatus, methods and systems for parallel power flow calculation and power system simulation

According to one aspect, an apparatus for computing a solution to a power flow problem for an electrical power system comprising a plurality of buses. The apparatus includes (a) at least one processor comprising a plurality of cores; and (b) memory coupled to the at least one processor for storing an admittance matrix for the power system, real power and reactive power for each bus, and an initial complex voltage for each bus; (c) wherein the at least one processor is configured to: (i) perform a Jacobi power flow calculation for each bus to determine the complex voltage for each bus, the Jacobi power flow calculation using the admittance matrix, the real power and reactive power for each bus, and the initial complex voltage for each bus as inputs, wherein at least two Jacobi power flow calculations are performed concurrently on the plurality of cores; (ii) calculate a power mismatch at each bus based on the complex voltages; and (iii) determine whether the Jacobi power flow calculations have converged based on the power mismatch and repeat (i) to (iii) if the Jacobi power flow calculations have not converged.




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Methods, systems, and computer readable media for simulating realistic movement of user equipment in a long term evolution (LTE) network

Methods, systems, and computer readable media for simulating realistic movement of user equipment in an LTE network are disclosed. According to one method, a logical topology of a long term evolution (LTE) access network is defined that includes defining connections between one or more eNodeBs (eNBs). A physical topology of the LTE access network is defined that includes defining locations of the eNBs and sectors, where the physical network topology is mapped to the logical network topology. One or more problem areas are defined within the physical network topology, where the one or more problem areas include locations where signal quality is degraded. One or more paths are defined through the physical network topology. A traffic profile for a user equipment (UE) device is defined. A plurality of messages is generated for simulating the movement of a UE device along a path through the physical network topology.




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Task-based design evaluation

A proposed feature vector for a first deign is received and an existing feature vector for an existing design is retrieved for a given task. The proposed design is evaluated against the existing design using task-based scores associated with each design and based on their performances for the given task.




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Coating composition, a film containing the same, and a method for forming a sealable film

A coating composition comprising: an aqueous dispersion comprising: the melt-kneading product of (A) a base polymer which comprises one or more thermoplastic polymers, (B) a stabilizing agent which comprises at least one component selected from the group consisting of acrylic acid grafted ethylene-based polymers and maleic anhydride grafted polyolefins; (C) a neutralizing agent; and (D) water; wherein the aqueous dispersion has a volume average particle size of less than about 5 μm is provided.




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Method for perfusing a biocompatible material graft with a liquid and perfusion kit

A method for perfusing a biocompatible material graft with a perfusion liquid includes the steps of: introducing the graft (100) in a perfusion chamber (2), arranging a transfer chamber (3) partly filled with the perfusion liquid (101), coupling in a tight manner the perfusion chamber (2) and the transfer chamber (3) for establishing a fluid communication between them, lowering the pressure in the transfer chamber (3) for transferring therein part of the air existing in the perfusion chamber (2), increasing the pressure within the transfer chamber (3) for injecting in the perfusion chamber (2) the perfusion liquid (101) existing in the transfer chamber (3). A perfusion kit includes a perfusion chamber (2) apt to contain a graft (100) to be perfused with a liquid (101) and a transfer chamber (3) apt to contain a liquid (101) to be perfused, the perfusion chamber (2) being connectable in a tight manner with the transfer chamber (3) for allowing a fluid exchange between the two chambers (2, 3) and inhibiting a fluid exchange between the two chambers (2, 3) and the external environment.




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Solution-processed organic electronic structural element with improved electrode layer

A solution-processed organic electronic structural element has an improved electrode layer. Located between the active organic layer and the electrode layer there is either an interface or an interlayer containing a cesium salt.




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Atomic layer deposition of metal sulfide thin films using non-halogenated precursors

A method for preparing a metal sulfide thin film using ALD and structures incorporating the metal sulfide thin film. The method includes providing an ALD reactor, a substrate, a first precursor comprising a metal and a second precursor comprising a sulfur compound. The first and the second precursors are reacted in the ALD precursor to form a metal sulfide thin film on the substrate. In a particular embodiment, the metal compound comprises Bis(N,N'-di-sec-butylacetamidinato)dicopper(I) and the sulfur compound comprises hydrogen sulfide (H2S) to prepare a Cu2S film. The resulting metal sulfide thin film may be used in among other devices, photovoltaic devices, including interdigitated photovoltaic devices that may use relatively abundant materials for electrical energy production.




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Adhesion promotion in printed circuit boards

An adhesion promotion process and composition for enhancing adhesion between a copper conducting layer and a dielectric material during manufacture of a printed circuit board. The composition contains a corrosion inhibitor, an inorganic acid, and an alcohol which is effective to increase copper-loading in the composition.




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Using chemical vapor deposited films to control domain orientation in block copolymer thin films

Vacuum deposited thin films of material are described to create an interface that non-preferentially interacts with different domains of an underlying block copolymer film. The non-preferential interface prevents formation of a wetting layer and influences the orientation of domains in the block copolymer. The purpose of the deposited polymer is to produce nanostructured features in a block copolymer film that can serve as lithographic patterns.




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Pattern formation method

According to the embodiments, a pattern formation method includes a process of formation of a self-assembly material layer containing at least a first segment and a second segment on a substrate having a guide layer, a process of formation of a neutralization coating on the self-assembly material layer, and a process of formation of a self-assembly pattern including a first region containing the first segment and a second region containing the second segment following phase separation of the self-assembly material layer.




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Dual cure method for ink for increased durability and adhesion to golf balls

A method is disclosed for curing ink printed images on golf balls by printing an image onto a golf ball and exposing the printed image to infrared radiation, then exposing the printed image to ultraviolet radiation.




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Fabrication of zeolite composite film

A fabrication of a zeolite composite film includes mixing a composition of water, aluminum isopropoxide, TMAOH, and TEOS according to a set ratio, followed by stirring and heating to obtain a mixture; performing a centrifugation on the mixture to obtain an upper layer suspension; preparing a mesoporous particle suspension that includes a plurality of mesoporous particles, and each mesoporous particle includes a plurality of templating agents; vaporizing a mixture suspension formed from both the upper layer suspension and the mesoporous particle suspension to form a plurality of vaporized droplets; depositing the vaporized droplets on a heated substrate while removing the templating agents to form the zeolite composite film with a plurality of macroporous, mesoporous and microporous structures.




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Low temperature silicon carbide deposition process

Methods for formation of silicon carbide on substrate are provided. Atomic layer deposition methods of forming silicon carbide are described in which a first reactant gas of the formula SinHaXb wherein n=1-5, a+b=2n+2, a>0, and X=F, Cl, Br, I; and a second reactant gas of the formula MR3-bYb, wherein R is a hydrocarbon containing substituent, Y is a halide, hydride or other ligand and b=1-3 are sequentially deposited on a substrate and then exposed to a plasma. The process can be repeated multiple times to deposit a plurality of silicon carbide layers.




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Method and apparatus for the formation of hydrophobic surfaces

The invention relates to the application of a coating to a substrate in which the coating includes a polymer material and the coating is selectively fluorinated and/or cured to improve the liquid repellance of the same. The invention also provides for the selective fluorination and/or curing of selected areas of the coating thus, when completed, providing a coating which has regions of improved liquid repellance with respect to the remaining regions and which remaining regions may be utilized as liquid collection areas.




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Depositing polymer solutions to form optical devices

Provided are methods of depositing polymer solutions on substrates to form various optical elements. A polymer solution may include about 0.1%-30% by weight of a specific polymer having rigid rod-like molecules. The molecules may include various cores, spacers, and sides groups to ensure their solubility, viscosity, and cross-linking ability. The deposition techniques may include slot die, spray, molding, roll coating, and so forth. Pre-deposition techniques may be used to improve wettability and adhesion of substrates. Post-deposition techniques may include ultraviolet cross-linking, specific drying techniques, evaporation of solvent, treating with salt solutions, and shaping. The disclosed polymers and deposition processes may yield optical elements with high refractive index values, such as greater than 1.6. These optical elements may be used as +A plates, −C plates, or biaxial polymers and used as retarders in LCD active panels or as light collimators and light guides.




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Catheter electrode assemblies and methods for construction therefor

A family of catheter electrode assemblies includes a flexible circuit having a plurality of electrical traces and a substrate; a ring electrode surrounding the flexible circuit and electrically coupled with at least one of the plurality of electrical traces; and an outer covering extending over at least a portion of the electrode. A non-contact electrode mapping catheter includes an outer tubing having a longitudinal axis, a deployment member, and a plurality of splines, at least one of the plurality of splines comprising a flexible circuit including a plurality of electrical traces and a substrate, a ring electrode surrounding the flexible circuit and electrically coupled with at least one of the plurality of electrical traces; and an outer covering extending over at least a portion of the ring electrode. A method of constructing the family of catheter electrode assemblies is also provided.




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Retractable screw intracardiac lead for cardiac stimulation and/or defibrillation

A retractable screw-type stimulation or defibrillation intracardiac lead is disclosed. According to one embodiment, the lead comprises a flexible hollow sheath (12) having at its distal end a lead head (10) and a connector (66) at its proximal end. The connector comprises a pin (62) connected to a lead head electrode (18). The lead head comprises a tubular body (28), at least one electrode (18, 20) for stimulation or defibrillation, a moving element translationally and rotationally moving within the tubular body in a helical motion, an anchoring screw (24) axially moving with respect to the tubular body, and a deployment mechanism (22) to deploy the anchoring screw out of the tubular body (28). The lead is a co-radial type, and the moving element (26) secured to the anchoring screw is connected to the tubular body (28) by a helical guide (46) and a coupling finger (56) protruding between two successive turns of the helical guide (46) for transforming a rotary movement imparted to the lead body in a deployment or retraction movement of the moving element (26). The helical guide (46) is resiliently compressible, with a free end (52) with a flat area (54) facing a flange (38) in vis-à-vis, so as to pinch the coupling finger (56) and to perform the function of a clutch limiting the torque transmitted to the anchoring screw by the rotation of the lead body, even in case of continuation of this rotation.




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Skull-focused RF-based stimulation apparatus, system and method for treating patients with Alzheimer's disease or other dementia

The portable, wearable, proximal Alzheimer's disease treatment invention is based upon creating an RF field of particular frequencies and intensities that are applied to the patient's head. To accomplish the aforementioned disease treatment functionality, a system was invented comprising a network of antennas connected to an RF generator via a feedline connector. The invention also provides methods for using measurements to monitor and manage the effectiveness of an ongoing disease treatment regimen, and databases which contain information about measurements, variables, and their relationships to clinical outcome.




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Applicator head and method for treatment of pain by transcutaneous electrical nerve stimulation

Embodiments of the present invention include an apparatus and method for treatment of pain by a device that provides transcutaneous electrical nerve stimulation. The device includes an applicator equipped with an electric pulse provider that sends an electric pulse to a set of electrodes disposed in an applicator head. The device is placed onto the skin of a patient's body at the point where the patient experiences pain and such that the electrodes of the device contact the skin of the patient while an insulating land area between the electrodes compresses the nerve during transmittal of the electric pulse through the electrodes and into the patient's body.




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Electronic stimulation textile for traditional Chinese medicine therapy

A textile for providing traditional Chinese medicine therapy to a wearer using electronic stimulation includes at least two conductive paths that are made from conductive textile material, the conductive paths are separated by nonconductive textile material, at least one pair of electrodes attach to the conductive paths corresponding to specific part of body or acupoints according to traditional Chinese medicine theory, and an electronic stimulation signal controller configured to conduct electronic stimulation signals to the electrodes via the conductive paths.




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Electrode with redundant impedance reduction

An electrode assembly that includes an electrically conductive layer, a first impedance reduction system, and a second impedance reduction system. The electrically conductive layer forms an electrode portion of the electrode assembly and a first surface to be placed adjacent a person's skin. The first impedance reduction system is configured to dispense a first amount of an electrically conductive gel onto the first surface of the electrically conductive layer in response to a first activation signal. The second impedance reduction system is configured to dispense a second amount of the electrically conductive gel onto the first surface of the electrically conductive layer in response to a second activation signal.




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System and method for fractional treatment of skin

A system and method for treatment of skin including a treatment surface having numerous small energy emitting points for fractional skin treatment as well as negative pressure outlets. During a treatment, negative pressure from the outlets may exert a pulling force on an opposing tissue surface to bring the tissue into contact with the energy points.




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Signal transmitting and lesion excluding heart implants for pacing, defibrillating, and/or sensing of heart beat

Devices, systems, and methods for treating a heart of a patient may make use of structures which limit a size of a chamber of the heart, such as by deploying a tensile member to bring a wall of the heart toward (optionally into contact with) a septum of the heart. The implant may include an electrode or other structure for applying pacing signals to one or both ventricles of the heart, for defibrillating the heart, for sensing beating of the heart or the like. A wireless telemetry and control system may allowing the implant to treat congestive heart failure, monitor the results of the treatment, and apply appropriate electrical stimulation.




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System and method for power-efficient transmission of EMG data

The system for displaying muscle force data includes a wearable patch and a remote visual display. The wearable patch carries electrodes suitable for sensing electromyographic signals on the skin of the patient. The patch carries circuitry which converts the detected electromyographic signal to a digital output which can be transmitted to the remote visual display. The circuitry relies on filtering to produce a usable digital signal at very low power consumption. The transmitted signal can be used to drive a variety of visual displays, including a conventional hand-held personal communicators and entertainment devices which had been programmed to suitably process the visual display.




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Method and apparatus for quantitative nerve localization

A method for localizing a needle to a nerve, the method comprising: using the needle to electrically stimulate the nerve, with a known current intensity, so as to evoke a nerve response;detecting the nerve response;analyzing the detected nerve response so as to identify at least one attribute of the same; andconfirming that the needle is in the immediate proximity of the nerve based upon known current intensity and at least one identified attribute of the detected nerve response.




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Combination heart assist systems, methods, and devices

The various embodiments disclosed herein relate to combination heart assist systems, methods, and devices that include both an electrical therapy device and a mechanical heart assist device. Various operational modes can be implemented using these embodiments, including a synchronized pacing mode, an internal CPR mode, and an internal workout mode.




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Vagus nerve stimulation with target effects controlled by adjusting temporal parameters

One or more temporal stimulation parameters of vagus nerve stimulation (VNS) are selected to substantially modulate one or more target physiological functions without substantially modulating one or more non-target physiological functions. In one embodiment, a stimulation duty cycle is selected such that VNS is delivered to the cervical vagus nerve trunk to modulate a cardiovascular function without causing laryngeal muscle contractions.




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Algorithm for the automatic determination of optimal AV and VV intervals

Methods and devices for determining optimal Atrial to Ventricular (AV) pacing intervals and Ventricular to Ventricular (VV) delay intervals in order to optimize cardiac output. Impedance, preferably sub-threshold impedance, is measured across the heart at selected cardiac cycle times as a measure of chamber expansion or contraction. One embodiment measures impedance over a long AV interval to obtain the minimum impedance, indicative of maximum ventricular expansion, in order to set the AV interval. Another embodiment measures impedance change over a cycle and varies the AV pace interval in a binary search to converge on the AV interval causing maximum impedance change indicative of maximum ventricular output. Another method varies the right ventricle to left ventricle (VV) interval to converge on an impedance maximum indicative of minimum cardiac volume at end systole. Another embodiment varies the VV interval to maximize impedance change.




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Methods for promoting intrinsic activation in single chamber implantable cardiac pacing systems

Cardiac pacing methods for an implantable single chamber pacing system, establish an offset rate for pacing at a predetermined decrement from either a baseline rate (i.e. dictated by a rate response sensor), or an intrinsic rate. Pacing maintains the offset rate until x of y successive events are paced events, at which time the offset rate is switched to the baseline rate for pacing over a predetermined period of time. Following the period, if an intrinsic event is not immediately detected, within the interval of the offset rate, the rate is switched back to baseline for pacing over an increased period of time. Some methods establish a preference rate, between the offset and baseline rates, wherein an additional criterion, for switching from the offset rate to the baseline rate, is established with respect to the preference rate.




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Signal strength indicator for adjusting communication in a medical implant

It is critical in an inductively link medical implant, such as a visual prosthesis or other neural stimulator, to adjust the external coil to a location to maximize communication between the external coil and internal coil. Converting the signal strength between the coils to a signal easily discernible by a clinician, preferably an audible tone, facilitates the adjustment of the external coil to a preferred location.




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Safety system for electrostimulation device

A housing for an electrostimulation device comprising a charger plug and a stimulation plug, designed to receive respectively a connector linked to a charger and a connector linked to a stimulation electrode, characterized in that it comprises a mobile locking element designed to alternately lock the charger plug or the stimulation plug.




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Closed-loop vagus nerve stimulation

The present invention provides a closed-loop system for treating neurological disorders, such as epilepsy. In one embodiment the system comprises an input assembly that is adapted to receive one or more signals from a patient that are indicative of a patient's neurological state. The input assembly processes the one or more signals to generate one or more control input signals. An output assembly receives the one or more control input signals from the input assembly and generate a neuromodulation signal that is a function of the patient's neurological state. An electrode array is configured to deliver the neuromodulation signal to a patient's peripheral nerve, such as the vagus nerve.




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Stimulation electrode selection

Bioelectrical signals may be sensed within a brain of a patient with a plurality of sense electrode combinations. A stimulation electrode combination for delivering stimulation to the patient to manage a patient condition may be selected based on the frequency band characteristics of the sensed signals. In some examples, a stimulation electrode combination associated with the sense electrode combination that sensed a bioelectrical brain signal having a relatively highest relative beta band power level may be selected to deliver stimulation therapy to the patient. Other frequency bands characteristics may also be used to select the stimulation electrode combination.




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Stimulation electrode selection

Bioelectrical signals may be sensed within a brain of a patient with a plurality of sense electrode combinations. A stimulation electrode combination for delivering stimulation to the patient to manage a patient condition may be selected based on the frequency band characteristics of the sensed signals. In some examples, a stimulation electrode combination associated with the sense electrode combination that sensed a bioelectrical brain signal having a relatively highest relative beta band power level may be selected to deliver stimulation therapy to the patient. Other frequency bands characteristics may also be used to select the stimulation electrode combination.




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Implantable head mounted neurostimulation system for head pain

An implantable head-mounted unibody peripheral neurostimulation system is provided for implantation in the head for the purpose of treating chronic head pain, including migraine. The system may include an implantable pulse generator (IPG) from which multiple stimulating leads may extend sufficient to allow for adequate stimulation over multiple regions of the head, preferably including the frontal, parietal and occipital regions. A lead may include an extended body, along which may be disposed a plurality of surface metal electrodes, which may be sub-divided into a plurality of electrode arrays. A plurality of internal metal wires may run a portion of its length and connect the IPG's internal circuit to the surface metal electrodes. The IPG may include a rechargeable battery, an antenna, and an application specific integrated circuit. The IPG may be capable of functional connection with an external radiofrequency unit for purposes that may include recharging, diagnostic evaluation, and programming.