769results about "Pressure sensors" patented technology

A medical system is disclosed that includes a medical device having an optical fiber, and an interchangeable connection component configured to provide a fiber optic connection between the medical device and capital equipment. The connection component is configured to facilitate cleaning and / or polishing of fiber optic interfaces include therewith. The connection component is also configured for replacement by a medical technician while the capital equipment is operational. The capital equipment may include one or more of an optical interrogator, a patch cable, a medical probe, an ultrasound machine, a display, a magnet sensor, or an electro-cardiogram (ECG) machine. The medical device may include an elongate member configured for insertion within the patient body, where the optical fiber core extends along a length of the elongate member.

A system obtains high-resolution data of actual over-ground gait rehabilitation interactions through a custom-made wearable system for identifying abnormal gait patterns and the therapists' assistance strategies. The system implements an impedance learning algorithm with feature selection and a goal-directed attractor definition reproduces therapist assistance in a way that integrates clinical insights into the control of lower-limb exoskeletons.

The present invention relates to a walking mat and a walking state determination method using the same, and more particularly, to a walking mat capable of determining a user's walking state and a walking state determination method using the same. A walking state determination device according to an embodiment of the present invention includes a modem that receives and outputs sensing information from a connected walking mat, a memory that stores one or more of predetermined correct walking information and correct standing information, and a processor. The memory may store program instructions executable by the processor that update the correct walking information or the correct standing information when sensing information is received and determine whether an emergency situation exists when sensing information is not received. In this case, the walking mat may generate sensing information through a pressure sensor formed therein and transmit it to the walking state determination device.

The invention discloses an intelligent anti-falling risk management system based on artificial intelligence, and relates to the technical field of artificial intelligence, the intelligent anti-falling risk management system comprises a management center, and the management center is connected with a monitoring acquisition module, a transmission processing module, a body position analysis module and a multi-dimensional supervision module; constructing a resting virtual space for the bedridden old person, and performing position marking on the collected bedridden state data through the resting virtual space based on the intelligent anti-falling bed to obtain a continuous track of the bedridden old person; boundary distance statistics is carried out according to the continuous track of the bedridden patient, the boundary distance is converted into a real-time track fluctuation map, range division is carried out on the real-time track fluctuation map, the range proportion is counted, and a curve judgment range is obtained; carrying out simulation diagnosis through the static lying virtual space to obtain an abnormal identification state, and carrying out dynamic feedback adjustment on the bedridden old people according to the abnormal identification state based on the static lying virtual space to obtain an anti-falling intervention measure; the occurrence of falling-off accidents of old people is effectively reduced, the nursing efficiency is improved, and the burden of nursing personnel is relieved.

This disclosure relates to a catheter system that for precisely positioning fluid flow restrictors within a blood vessel. In particular, this disclosure provides a catheter system that includes a sheath with a first fluid flow restrictor mounted thereto, and a catheter that is slidably disposed within the sheath and has a second fluid flow restrictor mounted thereto. Inside a blood vessel, the sheath and the catheter are separately slidable, thereby allowing the first and second fluid flow restrictors to be positioned at precise locations within the blood vessel.

A system for monitoring a subject in a physical space, the system including: a plurality of sensors for detecting movements of the subject in the physical space; a data processing system configured to: receive from the sensors signals representing detected movements of the subject in the physical space, process the received signals to determine corresponding movements of the subject in the physical space, and select an action from a plurality of predefined actions, based on the detected movement; and one or more output devices for outputting a prompt based on the selected predefined action for the subject.

An insert for an article of footwear includes an insert member having top and bottom sides, and an opening extending therethrough, and a housing connected to the insert member to receive an electronic module. The housing includes a tub positioned at least partially on the bottom side of the insert member to receive the module, a flange connected to the tub and extending outward around at least a portion thereof to cover at least a portion of the top side of the insert member, and a peg extending from the flange downward through the opening to the tub. A port is connected to the insert and has an interface accessible within the housing for communication with the module within the housing. A plurality of force sensors are connected to the insert member, and a plurality of conductive leads on the insert connect the sensors to the interface.

A manometric catheter probe includes a flexible printed circuit, one or more pressure sensor assemblies coupled to the flexible printed circuit along a length of the flexible printed circuit, and a first flexible sleeve. Each pressure sensor assembly includes a body. The body includes a central cavity configured to receive the flexible printed circuit and an annular recess of the body. Each pressure sensor assembly further includes a microelectromechanical systems (MEMS) sensor disposed in the annular recess, an electrical connector configured to electrically couple the MEMS sensor and the flexible printed circuit, and a first flexible sleeve disposed over the annular recess of the body. The first flexible sleeve includes a fluid configured to communicate pressure to the MEMS sensor, and a second sleeve is disposed over the pressure sensor assembly.

The invention relates to determining blood pressure of a subject based on a pressure signal that has been measured by using a measurement device comprising a) a shell encasing a part of the subject, through which blood flows, b) a pressure applicator applying pressure to the shell and thereby to the encased part of the subject, and c) a pressure sensor measuring the pressure signal on the skin of the encased part of the subject. For several pressure pulses of the pressure signal a respective feature characterizing the respective pressure pulse is determined, wherein based on the respective feature a respective blood pressure determination value is determined, thereby forming a blood pressure determination curve (TPW_M-curve) that is used for determining the blood pressure. This allows to determine the blood pressure with relatively low computational efforts.

The invention relates to the technical field of traditional Chinese medicine intelligent diagnosis, in particular to a pulse condition feature-based traditional Chinese medicine intelligent diagnosis system, which comprises a pulse signal acquisition module, a depth feature extraction and characterization module, a pulse condition semantic mapping and identification module, a personalized adaptation and robustness enhancement module and a diagnosis report module. According to the invention, comprehensive, accurate and robust analysis of pulse condition information is realized, and the accuracy of traditional Chinese medicine intelligent diagnosis is improved.

The invention discloses a multi-modal sensing data automatic labeling method and system for gait assessment, and the system comprises a sensing collection module which comprises two paths of pressure sensors and a six-axis IMU sensor; the two paths of pressure sensors are used for acquiring plantar pressure data; the six-axis IMU sensor is used for acquiring lower limb movement data; the wireless transmission module is used for uploading the collected plantar pressure data and lower limb movement data to a cloud Internet of Things platform; the cloud data processing module is used for receiving and storing the plantar pressure data and the lower limb movement data; the data labeling module is used for automatically recognizing a gait cycle and carrying out multi-dimensional score labeling; and the user interaction module is used for interacting with the data annotation module and the cloud data processing module and displaying gait evaluation related data and results. According to the invention, a multi-mode sensing PCB is self-developed, a closed-loop system of collection, cloud loading, labeling and display is constructed, and accurate, continuous and remote evaluation of gaits of children with cerebral palsy is realized.

The invention discloses a gait analysis and posture correction intelligent insole suitable for high-weight crowds and a preparation method of the gait analysis and posture correction intelligent insole. The intelligent insole comprises a composite functional layer, an electrode layer and a packaging layer, and the composite functional layer comprises a linear elastic gasket and a sensing material arranged in an opening area of the linear elastic gasket. The sensing material adopts a wedge-shaped structure design, and the effective contact area between the sensing material and the electrode can be linearly changed along with the compression displacement under the constraint action of the linear elastic washer, so that the high-linearity electrical response of a pressure signal is realized. And the adjacent sensing units are physically isolated by the linear elastic washers, so that the crosstalk phenomenon in the pressure sensing array is effectively reduced. Through linear regulation and control of the linear elastic gasket on mechanical response and cooperative modulation of the wedge-shaped structure sensing material on electrical response, stable and high-linearity plantar pressure detection is achieved under the condition of high plantar load, and the device is suitable for gait analysis and posture correction of high-weight people in the states of standing, walking, running and the like.

A method for determining a muscle fatigue of a muscle includes the step of electrostimulating the muscle at different frequencies, wherein the electrostimulation includes, at each frequency, a repetition of pulses during a period of time lower than 5 s. The method further includes the steps of determining forces developed by the muscle in response to the electrostimulations of step (i); and determining a muscle fatigue on basis of the determined forces.

Example embodiments may relate to a system, method, apparatus, and computer readable media configured for monitoring a user performing an exercise and generating a avatar of the user and a virtual shadow, wherein the virtual shadow illustrates proper form of the exercise. The example embodiments may further be configured for determining an amount of overlap between the virtual avatar and the virtual shadow, and generating a feedback score based on the amount of overlap.

The application relates to the field of blood pressure measurement, and discloses a blood pressure measurement method, a blood pressure measurement system, an electronic device and a medium. The blood pressure measurement method of the application, in the blood pressure measurement pressure raising stage, detects the real-time air pressure value of the air path connected with the air bag, and then controls the air valve driving circuit according to the real-time air pressure value. For example, when the air bag air pressure is low, a small driving voltage is used to drive the air valve to work, and when the air bag air pressure is high, a large driving voltage is used to drive the air valve to work. In this way, the driving voltage of the air valve is dynamically adjusted during the pressure raising process, compared with the mode of using a fixed high driving voltage to drive the air valve to work, the air valve can complete the work with small power consumption under the condition of guaranteeing the air leakage amount requirement, thus the power consumption consumed in each blood pressure measurement process is optimized, the overall power consumption of the blood pressure measurement system is reduced, the endurance of the wearable device is improved, and the long-term blood pressure monitoring goal is finally achieved.

A system for determining placement of a catheter in a patient includes a hemodynamic sensor and a display. The hemodynamic sensor produces a signal representative of a right ventricular pressure waveform of the patient. The catheter is connected to the hemodynamic sensor. The system further includes one or more processors and computer-readable memory encoded with instructions that, when executed by the one or more processors, cause the system to receive the signal representative of the right ventricular pressure waveform and extract features from the right ventricular pressure waveform. The instructions further cause the system to compare the features to one or more value ranges of the features to determine that the catheter is correctly placed when values of the features are within the one or more value ranges or that the catheter is incorrectly placed, is not properly connected to the system, or signal quality issues are occurring.

A system is provided for detecting bruxism or a temporomandibular joint disorder. A pressure sensor senses an external ear canal air pressure and bruxism or a temporomandibular joint disorder are identified from the sensed ear canal air pressure. An output signal indicates the detected bruxism or temporomandibular joint disorders so that remedial action can be taken.

Some embodiments are directed to a device for a surgical instrument, including at least one sensor, a circuit for controlling and processing signals coming from the at least one sensor, a memory for storing information coming from the circuit, and a radio interface for transmitting this information to an external device, the sensor(s), the circuit, the memory and the radio interface being powered by a power source, the circuit, the memory, the radio interface and the power source being housed in one or several hermetic and heat and pressure resistant case(s), in order to allow an autonomous operation of the device.

The utility model discloses a wearable flexible pressure sensor and an underwater physiological information monitoring system, and belongs to the technical field of underwater flexible electronic sensors. The flexible pressure sensor comprises an electrode layer, a spacing layer, a sensitive layer and a packaging layer, the electrode layer comprises a polyimide film, a flexible plate layer is arranged on one side of the polyimide film, and the flexible plate layer is connected with a wire; the spacing layer is of an annular structure and is made of nano glue; the sensitive layer comprises a TPU film, and a pyramid-shaped microstructure is formed on the TPU film; the electrode layer and the sensitive layer are bonded into a whole through the spacing layer, and the pyramid-shaped microstructure is in contact with the flexible plate layer; and the outer sides of the electrode layer, the wire and the sensitive layer are coated with a packaging layer. The wearable flexible pressure sensor can be directly worn on the wrist of an underwater worker to monitor pulse pressure in real time, is convenient to use, and can effectively improve the safety of the underwater worker.

The present invention relates to a method (2000;3000;4000) for calibrating a posture / gait analysis system (1). The system (1) comprises an insole (2) equipped with a plurality of pressure sensors (4) of the capacitive type and a control unit (5) connected to the pressure sensors (4). The method comprises the following steps. Initially, signals (2000) are acquired provided by the pressure sensors (4) subjected to a pressure varying between a first value and a second value, wherein each signal is indicative of a capacity value of the sensor which depends on the pressure applied thereto. For each pressure sensor, a polynomial relation is to be defined between an estimate of the pressure experienced by the sensor (4) and a change in the sensor's capacity; a plurality of sets of coefficients of the polynomial minimizing a norm of the residual between the pressure estimate and the corresponding pressure applied on the sensor (4) are calculated (3001- 3011), wherein each set of coefficients is calculated for a respective order of the polynomial relation between a minimum order and an optimized maximum order. A mean of the minimisation results obtained by each sensor for the same order of the polynomial relation is then performed (3011). The set of coefficients and the respective order of the polynomial relation associated with the minimum value between the calculated means are selected (3012, 3013) and stored (3014, 3015) in the control unit (5).

The application provides a sleep position detection method, device and head support device. The sleep position detection method comprises the following steps: acquiring pressure sensing data generated by the head acting on the head support device, determining a contact contour of the head and the head support device according to the pressure sensing data; performing sound source positioning to determine a mouth position; projecting the contact contour and the mouth position to the same plane to obtain a head projection contour and a mouth projection point; and determining a sleep position according to the positional relationship between the head projection contour and the mouth projection point. Through the application, the accuracy of sleep position detection can be improved.

In one embodiment, a dental appliance includes a dental-appliance body and a core sensor module embedded within the dental-appliance body. The core sensor module includes one or more processors. The dental appliance further includes at least one biological sensor coupled to the dental-appliance body and conductively coupled to the core sensor module, and further includes a conductive layer running through at least a portion of the dental-appliance body and conductively coupling the core sensor module with the at least one biological sensor.

An implantable cardiovascular pressure sensing system can be used to measure blood pressure accurately and safely without any patient intervention. It can include a pressure sensor that makes blood pressure measurements, circuitry for processing and storing the blood pressure measurements, and an antenna for transmitting the processed measurements to an external device (i.e., a device not implanted in the patient). The circuitry can average blood pressure measurements and / or remove artefacts caused by patient motion that is sensed with an accelerometer integrated into implantable cardiovascular pressure sensing system. A multilayer ceramic / polymer coating forms a hermetic seal around the components, preventing leakage or contamination. The implantable cardiovascular pressure sensing system is very versatile: it can be implanted in a blood vessel, next to a blood vessel, in an aneurysm sac, or integrated with another medical implant, such as an Amplatzer septal occluder, and implanted into or next to another vascular structure.

A wearable device for measuring blood pressure of a subject includes a control unit including a pump and first connection configured to allow a fluid to flow between the pump and a bladder; a band device configured to circle a body portion of the subject, the band device including a bracelet including the bladder; and a docking station configured to removably secure the control unit. A first extremity of the bracelet is connected to a first lateral portion of the docking station and a second extremity of the bracelet is connected to a second lateral portion of the docking station, the docking station being interposed between the first extremity and the second extremity to close the band device.

The present disclosure provides system and method for monitoring of at least one physiological parameter of a person engaged in a physical activity, for example, an impact received by a player engaged in a contact sport such as football. The system includes a monitoring unit that actively monitors the physiological parameter of the person, wherein the monitoring unit generates an alert event when the monitored physiological parameter exceeds a threshold of the parameter. The monitoring unit determines whether the parameter exceeds an over-exposure threshold, wherein said threshold is based upon both a single incidence or cumulative incidences.

The catheter comprises a shaft and a distal end portion that extends distally from the distal end of the shaft and defines a longitudinal axis. The distal end portion includes a proximal segment, a distal segment that is located distally of the proximal segment and is displaceable relative to the proximal segment, and a force sensing mechanism. The force sensing mechanism includes a proximal housing fixed within the proximal segment, a piezoelectric sensor attached to the proximal housing, the piezoelectric sensor having a first portion fixedly attached to the proximal housing and a second portion not fixedly attached to the proximal housing, and a distal housing fixed within the distal segment, the distal housing including a protrusion configured to contact the second portion of the piezoelectric sensor and apply an axial force to the second portion of the piezoelectric sensor when an external force is applied to the distal segment.

A blood pressure measuring device includes: a cuff to be wrapped around a measurement target site; a pressure sensing unit configured to detect cuff pressure; a pressure control unit configured to control the cuff pressure; a blood pressure calculation unit configured to perform blood pressure calculation processing based on the cuff pressure;and a winding strength determination unit configured to perform winding strength determination processing to determine a winding strength of the cuff at the target measurement location, wherein the pressure control unit performs constant pressure control to maintain the cuff pressure at a constant target pressure value from the start of an increase in cuff pressure until the end of the winding strength determination processing, and performs constant rate pressurization control to increase the cuff pressure at a constant rate to calculate the blood pressure after completion of the winding strength determination processing, and wherein the winding strength determination unit determines the winding strength during the constant pressure control.

The present invention relates to a weighing scale (100) for monitoring biometric data of a user (180). The weighing scale (100) comprises a first set and a second set of multiple electrodes disposed on one or more handles (120) for making contact with a first hand and a second hand of the user (180). The weighing scale (100) further comprises a base (140) for supporting the user (180) and determining a weight of the user (180). A first portion of a top surface of the base (140) comprises a third set of multiple electrodes for making contact with a first foot of the user (180) and a second portion of the top surface of the base (140) comprises a fourth set of multiple electrodes for making contact with a second foot of the user (180). The weighing scale (100) further comprises processing circuitry for obtaining a plurality of biometric signals and determining a pulse wave velocity (PWV) of the first hand and the second hand and the first foot and the second foot of the user (180) based on the plurality of biometric signals to estimate a peripheral arterial disease (PAD) risk of the user (180).

Embodiment of the technology disclosed herein relate to a Foley type catheter for sensing physiologic data from a urinary tract of a patient, a system that includes the catheter and a data processing apparatus, as well as methods for sensing physiologic data from the urinary tract of a patient that make use of embodiments of the catheter and the system. Embodiments of the catheter may include a pressure sensor having a pressure interface disposed at a distal end of the catheter, a pressure transducer at a proximal end of the catheter, and a fluid column disposed between the pressure interface and the pressure transducer. When an embodiment of the catheter is inserted into the urinary tract and the distal end is residing in the bladder, the pressure transducer can transduce pressure impinging on it from the pressure interface into a chronological pressure profile. As delivered by embodiments of the catheter, the pressure profile has sufficient resolution to be processed by embodiments of the data processing apparatus into one or more distinct physiologic pressure profiles, as, for example, peritoneal pressure, respiratory rate, and cardiac rate. At a sufficiently high data-sampling rate, these physiologic data may further include relative pulmonary tidal volume, cardiac output, relative cardiac output, and absolute cardiac stroke volume.

A posture detection system that detects the posture of a user seated on a cushion that includes a seating portion having a buttock support portion and a lumbar support portion having a sacral support portion. The posture detection system includes a seating portion sensor attached to the seating portion and configured to measure whether or not the user is seated on the seating portion, a sacral support portion sensor attached to the sacral support portion and configured to measure the posture of the user seated on the seating portion, a posture determination unit configured to determine the posture of the user based on a result measured by the sacral support portion sensor, and an alarm unit configured to output an alarm if the posture determination unit determines that the posture of the user is unsatisfactory.