96 results about "Breath rate" patented technology

An automatic breath collecting and sampling system, which is preferably carried by the subject, or otherwise kept with him or near him, for the recommended duration of the collection period. The system collects samples in separate switchable containers, either at predetermined time intervals, or in response to an automatic stimulus, which could be related to the breath content itself, or to another physiological signal, such as the subject s pulse rate, breath rate, blood pressure, or temperature, or in response to a signal related to an environmental effect, such as the presence of a strong concentration in the air of a foreign gas, which could be detected by an electrochemical sensor, or manually by the subject after being prompted by the system. After collection of the requisite number of separate containers, they may be detached and sent for analysis or other treatment.

A method for recognizing occurrences of breaths in respiratory signals. The method includes receiving digitized respiratory signals that includes tidal volume signals, filtering the received respiratory signals to limit artifacts having a duration less than a selected duration, and recognizing breaths in the filtered respiratory signals. A breath is recognized when amplitude deviations in filtered tidal volume signals exceed a selected fraction of an average of previously determined breaths. This invention also include methods for recognizing breathes from electrocardiogram R-waves; computer methods having code for performing the methods of this invention; monitoring systems that monitor a subject and include local or remote computers or other devices that perform the methods of this invention.

A portable oxygen concentrator system weighing 4-20 pounds that is adapted to be readily transported by a user and deliver oxygen to the user includes a rechargeable energy source; a concentrator powered by said energy source and adapted to convert ambient air into concentrated oxygen gas for the user; an inspiration sensor that senses respiratory activity of the user, and produces a signal in response thereto; and a control unit that receives the signal in response to sensed respiratory activity, determines a breath rate based in part on the received signal in response to sensed respiratory activity and controls the portable oxygen concentrator system to deliver oxygen flow sufficient to meet oxygen demand of the user based at least in part on the determined breath rate.

Several techniques are disclosed for isolating either heart or breath rate data from a photoplethysmograph, which is a time domain signal such as from a pulse oximeter. The techniques involve the use of filtering in the frequency domain, after a Fast Fourier Transform (FFT) has been conducted on a given photoplethysmograph also references as a given set of discrete time-domain data. The filtering may be applied to an identified fundamental frequency and one or more harmonics for heart related parameters. The filter may be truncated to the frequency data set and further applied multiple times to improve roll off. After filtering, an Inverse FFT (IFFT) is used to reconstruct the time-domain signal, except with undesirable frequency content eliminated or reduced. Calculation or measurement of parameters is then conducted on this reconstructed time-domain signal.

A method and device that can vary the dose of a gaseous drug provided to a patient based on a comparison of the normal resting breath rate for each individual patient and the current breath rate of the patient so that the patient does not become desaturated.

The invention provides a wireless field intensity breath detecting method and device and a breath detector. Channel state information CSI is extracted from existing 802.11WiFi wireless signals and is utilized for acquiring the weak changes, caused by breath during sleep of people, of the wireless signals, and therefore the aim of tracking and detecting the human body breath condition is achieved. By means of a CSI extracting step, a data correction step and a breath rate detecting step, an existing 802.11a/g/n WiFi network and a mobile terminal are utilized, no professional wearable sensor is needed, the wireless field intensity breath detector is customized, besides, the device can be installed in a mobile terminal of a user as software, and detection can be achieved by upgrading existing wearable equipment. Therefore, the device can be popularized to home environments in a large scale, serves as an applied product for people to carry out long-term human body health monitoring every day and has very high application and business value.

The invention discloses a method and system for monitoring sleep. The method comprises the steps that a monitoring system determines the current status of a monitored person, and calls determination threshold values of physiological parameters based on the determined status; the physiological parameters comprise heart rate, blood pressure and breath rate; the monitoring system reads the heart rate, blood pressure and breath rate of the monitored person, and makes the comparison between the read values and the corresponding determination threshold values; if the heart rate is higher than the alarm upper limit of the threshold value or lower than the alarm lower limit, the monitoring system sends alarms to designated family members and nurses. In the technical scheme the determination threshold values of the physiological parameters are stored in a cloud server; a personal server calls the adaptable threshold values from the server based on the physique, age, gender of the monitored person and the current season for the determination. Once any of the heart rate, blood pressure or the breath rate appears to be abnormal, the alarm is sent in time to inform the family members and medical personnel to check. The method and system for monitoring sleep are applicable to medical agencies and families.

A resuscitator has a patient airway interface device, a bag, a flow passage coupled between the bag and patient airway interface device, and a sensor assembly. The patient airway interface device may be a mask or an endotracheal tube. The sensor assembly has a display, at least one sensor coupled to the flow passage and configured to provide a measurement of at least one parameter, and a processor coupled to the display and the at least one sensor. The processor is configured to receive the measurement from the sensor and provide information on the display based on the received measurement. The information may include a current breath rate, a pressure-vs-time curve, and guidance to the user to assist in achieving a target breath rate.

The invention discloses a real-time sleep staging detection method based on a piezoelectric sensor and a device for realizing the method. According to the method and the device, a sleep piezoelectric sensing mattress is adopted for collecting BCG (Ballistocardiographic, namely, the ballistocardiography) signals of long-term sleep, and the signals are mixed with the information including the heartbeat, the breath and the body motion during the sleep process. The sleep staging algorithm mixed with multiple signals is adopted, the hidden markov model is applied to the research for the sleep breathing data, by utilizing the advantages of the hidden markov model mixed with the heartbeat and the breath rate at different stages, and in combination with the body motion detecting algorithm, the influences of the body motion for the staging based on the heartbeat and the respiratory signals are reduced, meanwhile, the discernibility of the body motion detecting algorithm for the waking state and the sleep state is enhanced, and further, the long-time automatic sleep staging accuracy rate based on the piezoelectric sensing signals is improved; the algorithm is deployed to a server, so that the automatic sleep staging is realized.

A method and system are disclosed for assessing the capability of a first person to operate a machine, such as an aircraft or other transport vehicle. The method includes the steps of:

• • (a) Sensing the value of at least one, and preferably two or more information parameters for assessing the fitness of the person operating the machine. The parameters include one or a combination of electroencephalogram information, electrocardiogram information, heart rate information, respiratory rate information, eye motion information, eyelid position information, eyelid motion information, expired gas mixture information, blood oxygen content information, blood oxygen saturation information and blood pressure information for the person operating the machine, and/or information about operation of the machine as well as information about actions taken by the person operating the machine.
  • (b) Determining whether at least one value of one information parameter is/are not within the range of values deemed to be acceptable for a capable person.
  • (c) Indicating when the at least one information parameter is/are not within the range of acceptable values, thereby indicating the person's decreased fitness and ability to operate the machine.

A user interface for a pulse oximetry device that calculates physiologic parameters of a subject including at least a subject's heart rate and S_pO₂, is disclosed wherein the interface comprises a graphical display of at least one raw data signal of the pulse oximetry device that maintains heart and breath rate components and a display of the calculated heart rate and S_pO₂ of the subject. The interface may further include a user selectable data averaging function in which the interface is configured to selectively obtain and display averages of at least some of the calculated physiologic parameters over a defined period.

A restraining tube for small animals (preferably animals with tails) is designed to facilitate physiologic measurements of the animal through an integrated or associated sensor mount. The physiologic sensors include those for the measurement of pulse oximetry and other measurements such as breath rate, heart rate, pulse distention and breath distention, temperature to name a few. A tail engaging sensor mount geometry is provided for a particular pulse oximeter into the back plate of the tube. The immobility of the animal is especially important given the fact that pulse oximetry measurements are extremely susceptible to even the smallest motion artifact.

A monitoring system for safe driving comprises a signal collection module, a signal processing module, a data processing module and a data analyzing module, wherein the signal processing module extracts heartbeat intervening sequence data and breath intervening sequence data, and corresponding cardiopulmonary reference datum such as heart rate, heart rate variability, heart rate declarative force, breath rate and breath rate variability can be calculated based on the two data via the data processing module; a series of feature values of an original waveform can be acquired and data processing amount can be reduced, so analyzing difficulty can be reduced; heart rate parameters and breath parameters are comprehensively considered via the data analyzing module, so driver fatigue degree and risk of spasmodic diseases can be respectively predicted; safe driving rises can be accurately monitored in real time, so drinking safety can be ensured; relatively, the invention further provides a safe driving monitoring method, an automobile including safe driving monitoring system and a storage medium.

Medical devices and techniques derive breath rate, breath distention, and pulse distention measurements of a subject from a pulse oximeter system coupled to the subject. These parameters together with the conventional physiologic parameters obtained from a pulse oximeter system can be used to assist in controlling the ventilation levels and the anesthesia levels of the subject. The development has human applications and particular applications for animal research.

Several techniques are disclosed for isolating either heart or breath rate data from a photoplethysmograph, which is a time domain signal such as from a pulse oximeter. The techniques involve the use of filtering in the frequency domain, after a Fast Fourier Transform (FFT) has been conducted on a given photoplethysmograph also references as a given set of discrete time-domain data. The filtering may be applied to an identified fundamental frequency and one or more harmonics for heart related parameters. The filter may be truncated to the frequency data set and further applied multiple times to improve roll off. After filtering, an Inverse FFT (IFFT) is used to reconstruct the time-domain signal, except with undesirable frequency content eliminated or reduced. Calculation or measurement of parameters is then conducted on this reconstructed time-domain signal.

The invention discloses a human sleep heart rate and breath monitor system. The human sleep heart rate and breath monitor system comprises front end collecting equipment and a data processing system, the front end collecting equipment is used for collecting the human body heart rate and breath information under a sleep state, the data processing system is used for analyzing and processing data collected by the front end collecting equipment, the front end collecting equipment comprises a radar device used for emitting signals to the human chest and receiving the emitted signals and a vidicon collecting human sleep process images, the output of the vidicon is connected with a hard disk video, and the radar device and the output of the hard disk video are respectively connected with the data processing system through a network. The system can basically obtain the precise breath rate and heart rate number under the condition that sleeping postures are stable and can detect the heart rate and the breath condition of a human body in the sleep process for a long time, once an abnormal condition occurs, an alerter gives an alarm and sends alarm signals to specific mobile equipment, other personnel are informed, monitored personnel can be treated in time, the use of the system is not restrained, and the sleep of a user is not influenced.

The invention relates to the technical field of electronic communication, in particular to a sleep monitoring device. Sleep monitoring is realized through an arranged piezoelectric film sensor in a detection vibration manner, accordingly, the device does not need to be worn, and a user does not need to keep a specific posture during sleeping and can use the sleep monitoring device conveniently. An arranged charge amplifier is taken as sensitivity adjustment equipment, the monitoring sensitivity can be improved, and an accurate breath rate detection effect, an accurate body turning detection effect and a better heart rate detection effect can be realized. The device adopts a wireless connection manner, has a plug-and-play property, is easy and convenient to use and causes no harm to human bodies due to relatively low work voltage.

A portable medical device is able to measure all four major vital signs and able to wirelessly communicate medical data in real-time to a user. The system includes an arm cuff air bladder of a vital sign detection assembly which may be worn about a forearm of the user. The arm cuff air bladder comprises several sensors in touch-contact with various vital sign detections points surrounding the forearm of the user and is able to detect and record a respiratory rate, a pulse rate, a blood pressure measurement, and a body temperature measurement for monitoring by the user.

A system remotely determines living objects and their heartbeat rate or breath rate. The system has a laser source, a diffractive optics, a defocusing lens, a laser CCD, and a vibrations analyzer. The laser source is used for emitting a laser beam. The diffractive optics is used for dividing said laser beam to a grid of plurality of laser beams in which the living object is located. The defocusing lens is used for receiving pluralities of laser beams as reflected from objects within the area of interest, and for defocusing said reflected beams, thereby to produce defocused speckles on the laser CCD. The vibrations analyzer is used for analyzing vibrations within said displayed speckles, and for determining therefrom a vibrations rate of heartbeat or breath respectively of the living object

The present invention provides a method for judging emotions based on heart rate and respiration. The method at least includes: monitoring the heart rate and respiration of several experimenters for a period of time; Action; record the different emotional states of the experimenter in the time period and the heart rate and breathing rate under the emotional state; make the different emotional states and the heart rate and breathing rate corresponding to the emotional state into a data table to obtain an emotional evaluation report ; Determining the emotion; adopting the monitoring of the heart rate and breathing rate to the judged emotional person; substituting the obtained data into the emotional evaluation report to obtain the emotional state of the judged person. This method overcomes the problem of measuring the fluctuation of emotions in the past, but it is difficult to distinguish whether the fluctuation is positive emotion or negative emotion. The process is simple, the monitoring is accurate, and the result is intuitive.