21 results about "Breath test" patented technology

The present invention provides an improved breath analyzer and breath test method to determine the presence of disease in humans, including but not limited to, the bacterium H. pylori in a subjects digestive tract. In certain embodiments, the present invention provides a universal breath testing platform and methods of testing for diseases of the gastrointestinal tract, the liver, the kidneys, and the lungs, along with testing for cancer, infections, and metabolic diseases.

The invention provides a deep learning-based expiration experiment triage and queuing optimization method and system, and relates to the technical field of medical management, and the method comprises the steps: collecting multi-dimensional physiological data, carrying out the time-frequency domain decomposition to extract features, generating a health index through a mixed expert model, and constructing a multi-objective optimization function in combination with the time cost, the diagnosis and treatment matching degree and the resource utilization rate, and generating an optimal allocation scheme through adaptive search. According to the method, the triage accuracy can be improved, the waiting time of the patient is shortened, the medical resource configuration is optimized, and the treatment efficiency and satisfaction are improved.

The utility model relates to a gas collecting device for an expiration test, which effectively solves the problems that the existing expiration collecting device is inconvenient to remove interference gas, and is inconvenient to classify, collect and store gas exhaled by a detector in different time periods, so that the accuracy of an expiration test result is influenced. According to the expiration test gas collection device, cavity gas in a cavity of a detector can enter the gas circulation structure at the first time and is stored in the interference gas collection structure, so that the cavity gas is removed, and alveolar gas exhaled by the detector subsequently flows through the rotating structure and enters one gas storage bag in the gas storage structure; a filtering block in the rotating structure filters out part of non-target gas, so that the accuracy of a detection result is improved; the gas storage structure and the rotating structure can be convenient for a detector to store exhaled gas into different gas storage bags in different time periods, so that exhaled gas samples in different time periods can be stored in batches, and the accuracy of exhaled gas detection results is further improved.

The technology described herein relates to methods and systems of detecting surrogate circumvention events based on a data-driven process. Common methods of circumvention include having a sober individual provide the breath sample or using various mechanical or electronic devices to mimic human breath (“surrogate samples”). In other instances, the assigned offender may drive a different vehicle (“surrogate vehicle”) other than the vehicle with the installed interlock device. The technology described herein records data events associated with breath tests to determine whether a surrogate circumvention event has likely occurred. The data events may include time-series sensor measurements from the BAIID and / or patterns of passed, failed, and skipped breath tests to predict the occurrence of the surrogate circumvention events.

The application discloses a Helicobacter pylori breath test signal denoising fitting method and system, and belongs to the technical field of medical detection and signal processing. The method processes the continuous monitoring signal of the 13CO2 / 12CO2 isotope ratio in exhalation: firstly, the original signal is subjected to band-pass digital filtering to suppress high-frequency noise; then, low-frequency drift is eliminated through adaptive baseline correction to generate a drift-removed signal; subsequently, a robust peak value recognition algorithm is used to extract physiological response characteristics; finally, the identified peak value is taken as the center, a nonlinear function with physiological constraints is used for local fitting, and the Delta Over Baseline value is calculated based on the generated fitting curve with high precision. The application effectively solves the signal distortion problem caused by breathing fluctuations, instrument noise and the like in in vivo detection, realizes high-fidelity restoration of the Helicobacter pylori metabolic response, and significantly improves the detection accuracy and reliability of the breath test.

The utility model relates to the technical field of medical auxiliary instruments, and provides a one-way valve suitable for an opening portion of a gas collection bag and the gas collection bag, the one-way valve comprises a valve assembly and a valve port which are arranged in the bag opening of the gas collection bag, and the valve port has an open state and a closed state. The valve assembly comprises a fixed plate fixed to the inner wall of a bag opening of the gas collection bag, a guide rod with one end fixed to the fixed plate, a sliding plate arranged on the guide rod in a sleeving mode and matched with the guide rod in a sliding mode, and an elastic body arranged between the fixed plate and the sliding plate. And the elastic body is sleeved on the guide rod, and two ends of the elastic body are fixedly connected with the fixed plate and the sliding plate respectively. The valve port and the valve assembly matched with the valve port are designed in the bag opening of the gas collecting bag, so that the sampling requirement is met, the gas collecting bag is not prone to gas leakage, use is convenient, the structure is simple, use of various people can be met, and the pain point of a current 13C urea expiration test is solved.

The invention relates to the technical field of expiration detection, in particular to an expiration detection method and device based on passage division of four metal oxide gas sensors. According to the method, four metal oxide gas sensor channels are adopted, and a metabolic energy and substrate switching channel, an inflammation and oxidative stress channel, a volatile organic compound exposure and abnormal metabolic mode channel and a quality control and stability channel are respectively fixed and correspond to the metabolic energy and substrate switching channel, the inflammation and oxidative stress channel, the volatile organic compound exposure and abnormal metabolic mode channel and the quality control and stability channel; an expiration signal of the same mouth is mapped to response axes of the four channels, and the system outputs the relative state of each channel instead of a disease diagnosis conclusion; and the quality control and stability passage is used for judging the qualification of the expiration sample and whether a detection result is allowed to be output or not. By adopting the method and the corresponding device, the sensors and the physiological risk pathways can be in one-to-one correspondence, binding of a single sensor or a single substance to a specific disease is avoided, improvement of interpretability, expansibility and compliance is facilitated, and the method and the corresponding device are suitable for expiration risk environment assessment and health screening equipment.

The utility model discloses a carbon 13 expiration test air collecting bag which comprises a bag body and an air blowing pipe, one end of the air blowing pipe is communicated with the inside of the bag body, and the other end of the air blowing pipe is provided with a cover cap. An exhaust pipe is further arranged on the bag body, one end of the exhaust pipe is communicated with the interior of the bag body, the other end of the exhaust pipe is communicated with the atmosphere, a one-way exhaust assembly is arranged in the exhaust pipe, and when the air pressure in the bag body is larger than a threshold value, the one-way exhaust assembly is converted into an open state from a closed state to form exhaust of the bag body. The exhaust pipe is arranged on the bag body of the air collection bag for the carbon 13 expiration test, the one-way exhaust assembly is in a normally-closed state, when the air pressure in the bag body is larger than a threshold value, the one-way exhaust assembly is opened to form one-way exhaust of the bag body, and the situation that the air pressure in the bag body is too large, and smooth proceeding of the test is affected is avoided.

The utility model relates to the technical field of gas inspection equipment, and discloses an expiration tester quick connecting mechanism which comprises a main body assembly, an expiration tester, a connecting piece and a gas collecting bag, the connecting piece is located on one side of the expiration tester, and the gas collecting bag is arranged on one side of the connecting piece; the connecting assembly is arranged in the connecting piece and comprises a first sealing piece, a second sealing piece and a positioning piece, the first sealing piece is located in the connecting piece, the second sealing piece is arranged on one side of the first sealing piece, and the positioning piece is located on the first sealing piece. The beneficial effects of the utility model are that the gas collection bag can be sealed through the arrangement of the connecting assembly, external air is prevented from entering the gas collection bag, and meanwhile, the gas collection bag can be positioned after connection, and the gas collection bag is prevented from falling off in the detection process.

The application relates to a portable breath detection device, method and electronic equipment, wherein the device comprises: a collection part for collecting gas exhaled by a user; a flow guide part connected with the collection part, which switches a corresponding gas channel based on the working mode of the portable breath detection device to control the flow mode of the gas or air introduced from the external environment based on the gas channel; a driving part for driving the gas or air based on the working mode, so that the gas or air flows along the gas channel based on the flow mode until the gas or air is discharged into the external environment; and a detection part for analyzing the gas flowing through the gas channel to obtain an analysis value between the gas and a preset sample gas. Thus, the technical problem that, in the related art, the structure under different working modes is separately designed, is large in size, is difficult to realize portable application, lacks an accurate airflow control structure, and affects the detection result is solved.

The utility model discloses an expiration test gas collection card capable of preventing saliva from entering, and mainly relates to a C14 expiration test. Comprising a test card and a blowing nozzle, an indicator window is arranged on the upper surface of the test card, a protective film is mounted on the upper surface of the test card, a mounting frame is mounted at the air inlet end of the test card, an adjusting structure is arranged on the side, away from the test card, of the mounting frame, the adjusting structure comprises an adjusting frame, and the adjusting frame is fixedly connected with the mounting frame. The side, away from the mounting frame, of the adjusting frame is fixedly connected with a blowing nozzle, the upper surface of the adjusting frame is fixedly connected with a cover plate, the side, close to the adjusting frame, of the blowing nozzle is fixedly connected with a guide frame, the bottom side of the inner wall of the adjusting frame is slidably connected with a storage box, and the end, away from the blowing nozzle, of the guide frame is located in the storage box. The utility model has the beneficial effects that saliva exhaled by a patient is collected by utilizing the storage box, so that the saliva is prevented from entering a test card, and the accuracy of an experimental value is improved.

The present invention provides an improved breath analyzer and breath test method to determine the presence of disease in humans, including but not limited to, H. pylori infection, Celiac Disease, Metabolic dysfunction-associated steatohepatitis (MAHD), Inflammatory Bowel Disease (JBD). 'm a subject's digestive tract. In certain embodiments, the present invention provides a universal breath testing platform and methods of testing for diseases of the gastrointestinal tract, the liver, the kidneys, and the lungs, along with testing for cancer, infections, and metabolic diseases.

The utility model discloses a positive and negative flow generator and breathing test equipment, and belongs to the technical field of breathing test equipment, and the positive and negative flow generator comprises a positive pressure air source used for generating positive pressure airflow; the regulating valve group is connected with the positive pressure air source, the flow regulating assembly is connected with the regulating valve group, and the flow regulating assembly is used for regulating the flow passing state of positive pressure air flow; the direction adjusting assembly is connected with the flow adjusting assembly and used for adjusting the direction of the positive pressure airflow; the airflow output port is connected with the direction adjusting assembly; the pressure transmitter is connected with the regulating valve group and is used for acquiring airflow information regulated by the regulating valve group; wherein the airflow information comprises pressure and flow. The technical problem that airflow parameters of positive airflow and negative airflow cannot be adjusted is solved, and the technical effects of improving airflow control precision and testing result accuracy are achieved.

The present invention provides a breath detection filter device that prevents cross contamination, a mouthpiece used therewith, and a breath detection method. The filter device includes a mouthpiece and a device body, and the mouthpiece is detachably connected to the device body. The mouthpiece includes an exhalation channel and an inhalation channel, a one-way valve is provided on the inhalation channel, and an opening and closing device is provided on the exhalation channel. The exhalation channel and the inhalation channel of the mouthpiece correspond to the exhalation channel and the inhalation channel of the device body respectively and are tightly connected without leakage. The mouthpiece in the filter device of the present invention is for single use, which can avoid contamination of the inhalation channel of the device body used by multiple people, so as to achieve the purpose of preventing cross contamination during the exhalation detection process of exhaled nitric oxide, etc., and is very suitable for promotion and application in clinical practice.

The application provides a deep learning-based breath test triage and queuing optimization method and system, relating to the technical field of medical management, comprising collecting multi-dimensional physiological data, performing time-frequency domain decomposition to extract features, generating a health index using a hybrid expert model, constructing a multi-objective optimization function by combining time cost, diagnosis and treatment matching degree, and resource utilization rate, and generating an optimal allocation scheme through adaptive search. This method can improve triage accuracy, shorten patient waiting time, optimize medical resource allocation, and improve treatment efficiency and satisfaction.

A vehicle control method and apparatus, and a medium and an electronic device, which relate to the technical field of vehicle alcohol interlocks. The control method comprises: when there is an occupant in a vehicle, acquiring first alcohol data detected by a first alcohol detection apparatus, wherein the occupant at least comprises a driver; if it is determined on the basis of the first alcohol data that the driver is at risk of drunk driving, acquiring second alcohol data detected by a second alcohol detection apparatus on the basis of a target operation of the driver; and when alcohol concentration data reaches a concentration threshold value, controlling the vehicle to be prohibited from starting. In the control method, whether the driver is at risk of drunk driving can be initially detected at first; and when the driver is determined to be at risk of drunk driving, the accuracy of determining whether the driver is at risk of drunk driving is better improved by means of redetection; in addition, when the driver is not at risk of drunk driving, the vehicle can be directly allowed to be started without the need for the driver to take a breath test every time before they get in the vehicle and start the vehicle, thereby improving the experience of the driver.

An expiratory test device is provided to test for hydrogen sulfide and other parameters in exhaled breath from a patient. In addition to an atmospheric input for receiving atmospheric air, a patient sample input is provided for receiving exhaled breath from a patient. A valve is coupled to the patient sample input and the atmospheric input, and first and second pathways are provided from the valve to a hydrogen sulfide sensor module and a second sensor module.

A fluorescent sensor compound for detecting marijuana can include an oligomer having a general structure of Y-[D]n-A-Z. In this structure, D is an electron donor group according to Formula (I), and A is an electron acceptor group according to Formula. (II). Additionally, Y is R3, R3-A, or R3-D-A; Z is R3 or [D]m-R3; n is an integer from 1 to 3; m is an integer from 1 to 2; R1 is an alkyl chain and R1 can optionally include different alkyl chains in different respective D groups; R3 is an alkoxyphenyl end group. A fluorescent sensor for detecting marijuana (100) can include the fluorescent sensor compound formed as a. film (110) and a. fluorescence detector (150) oriented to detect a fluorescence response from the fluorescent sensor compound.

A breath analysis system comprises a breath analysis device having an analyte sensor, such as a metal oxide semiconductor sensor, that needs to be heated or otherwise prepared before a breath test can be performed. To reduce or avoid a user-perceived delay (typically multiple minutes) associated with the sensor preparation operation, the system predictively initiates a sensor preparation operation based on a determination or prediction of whether the user is in an adequate state for performing a breath test. This prediction may be based on one or more factors, such as the current time, whether the breath analysis device is within wireless communication (e.g., Bluetooth) range of the user's smartphone, data reflective of the user's location and / or activity, etc.

The invention relates to the technical field of gas detection, and discloses a baseline drift suppression system and method and an expiration tester. The system comprises a multi-stage constant temperature layer arranged in an expiration tester and a gas path structure with a preheating function, wherein the multi-stage constant-temperature layer comprises a first-stage constant-temperature layer, a second-stage constant-temperature layer, a third-stage constant-temperature layer and a fourth-stage constant-temperature layer, the second-stage constant temperature layer is used for controlling the temperature of the gas circuit structure; and the third-stage constant-temperature layer is used for thermally isolating the expiration tester from the external environment. By adopting the system, a highly stable thermal environment can be created for optical detection of the expiration tester.