63 results about "Autonomous breathing" patented technology

The utility model relates to the technical field of equipment testing, in particular to a passive following type respirator testing device and system.The device comprises a respiration simulation assembly provided with a passive following type respirator; the muscle simulation assembly is connected with the respiration simulation assembly and used for driving the respiration simulation assembly to move and simulating the expiration and inspiration exchange process of the human body based on the movement of the respiration simulation assembly; and the upper computer is communicated with the muscle simulation assembly and is used for inputting a test instruction to enable the muscle simulation assembly to move and outputting a test result of the passive following type respirator according to the test data of the passive following type respirator. Therefore, the problem that the test accuracy is low due to the fact that the simulated lung lacks a power source and the spontaneous respiration state of human muscles cannot be simulated in the prior art is solved.

A computer-implemented method for detecting onset of a spontaneous breath by a patient coupled to a ventilation system includes receiving, at a processor, an electromyography (EMG) signal from an EMG sensor disposed on the patient. The method also includes pre-conditioning, via the processor, the EMG signal to separate the EMG signal into a plurality of components having EMG information utilizing a set of bandpass filters. The method further includes individually analyzing, via the processor, each component of the plurality of components to detect an onset of the spontaneous breath by the patient. The method still further includes determining, via the processor, the onset of the spontaneous breath by the patient is occurring when at least two components of the plurality of components indicate the onset of the spontaneous breath by the patient.

The invention relates to a signal processing unit and a method which performs an estimation (Sig res,est ) for a respiratory signal. This respiratory signal is a measure of a patient's own spontaneous breathing and / or mechanical ventilation. A summed signal (Sig) is calculated from measurements taken in or on the patient's body. Sum ) generates a signal that includes the respiratory and a cardiogenic signal. By influencing the sum signal (Sigmoidal frequency), the influence of cardiac activity on the sum signal (Sigmoidal frequency) is determined. Sum ) is compensated, an intermediate signal (Sig) is used. com ) calculated. A reference attenuation signal section describes the average time course of the contribution of the cardiogenic signal to the intermediate signal (Sig). com For each detected heartbeat, an intermediate signal segment [SigA] is generated. com (x)] is generated. From this, a damped intermediate signal section [SigA] is created. com,d(x)] is generated, for which a fitted attenuation signal section [Mod(1)(x), ..., Mod(n)(x)] is applied to the intermediate signal section. The fitted attenuation signal section [Mod(1)(x), ..., Mod(n)(x)] is calculated from the reference attenuation signal section using at least one quality measure [Q(30), Q(31)].

The application provides a decision-making method for the whole process of mechanical ventilation weaning, characterized by comprising the following steps: acquiring various index data of a patient at a first frequency to construct a patient index database; identifying an offline window period through key index data in the offline window period in the patient index database and AI captured dynamic behavior signals; in the offline window period, starting and performing a spontaneous breathing test, acquiring key index data of the offline window at a second frequency, generating a spontaneous breathing test tolerance score, and pushing a suggestion to medical staff on whether to perform weaning based on the spontaneous breathing test tolerance score; after the medical staff wean, monitoring key outcome index data at a third frequency, evaluating the recovery of the patient to obtain an evaluation result, and judging whether to intervene according to the evaluation result. In the whole weaning process, different frequencies are used to acquire corresponding index data at different stages, ensuring accurate grasp of the patient's condition.

The invention relates to the technical field of nursing after lung transplantation, in particular to a sequential early warning method for human body composition analysis and non-tubular lung transplantation liquid imbalance, which comprises the following steps of: collecting human body composition analysis, spontaneous respiration, circulation functions and laboratory indexes of a patient after lung transplantation; monitoring frequency and key indexes are set based on 0-6 hours (an ultrahigh-risk period), 6-24 hours (a high-risk period) and 24-72 hours (a recovery period) after operation. A multi-dimensional comprehensive score is calculated through multiple parameters, a liquid state risk grade is determined, early warning of a corresponding grade is started in combination with an early warning condition, a grading intervention strategy is executed accordingly, dynamic monitoring and accurate management of postoperative liquid unbalance are achieved, subjective judgment is converted into a quantitative result through fusion of human body composition analysis and spontaneous respiration parameters, and the postoperative liquid unbalance early warning effect is achieved. And the identification accuracy of excessive liquid or insufficient liquid is obviously improved.

The application provides a method and system for estimating autonomous inspiration effort intensity based on a respiratory system model under pressure control ventilation, which simulates airway pressure waveform data assuming no autonomous inspiration effort by combining airway pressure waveform data existing autonomous inspiration effort under pressure control ventilation with autonomous breathing lung ventilation model, obtains airway resistance and respiratory system compliance to obtain flow waveform according to respiratory mechanics motion equation by using original waveform data measured clinically, and then carries out error analysis with flow waveform existing autonomous inspiration effort measured clinically, finally estimates autonomous inspiration effort intensity by using linear regression curve fitting obtained from error index value of flow waveform data assuming no autonomous inspiration effort and flow waveform data existing autonomous inspiration effort obtained from a number of known gold standard esophageal pressure deviation patients, and realizes autonomous inspiration effort intensity estimation without esophageal pressure.

The invention relates to the technical field of medical instruments, in particular to a chest drainage device which comprises a drainage bottle, a drainage tube and a negative pressure mechanism, one end of the drainage tube is inserted into the drainage bottle, the other end of the drainage tube is inserted into the chest of a patient, and the negative pressure mechanism is communicated with an inner cavity of the drainage bottle. The negative pressure mechanism is driven by autonomous respiration of a patient to generate negative pressure suction force on the drainage bottle. According to the scheme, the physiological activity of the human body is converted into negative pressure power through ingenious mechanical conversion, negative pressure equipment, power supply and negative pressure generation through manual pressing of special personnel are not needed, the device can be widely applied to assisting in chest drainage in special environments such as emergency rescue and disasters lacking medical resources, and medical and human resource pressure is reduced.

This invention relates to a method comprising receiving a pressure signal from a pressure sensor (17) and / or a flow signal from a pressure sensor and a flow sensor (16), and receiving signals from one or more sensors (56, 58, 60, 62) measuring different physiological parameters from the pressure sensor (17) and the flow sensor (16). The method includes detecting the onset of spontaneous breathing in a patient based on the pressure signal and / or the flow signal, and synchronizing the provision of respiratory support to the patient with the onset of spontaneous breathing detected using the pressure signal and / or the flow signal. The method includes calibrating parameters and thresholds to be used for detecting the onset of spontaneous breathing based on these signals. The method includes, after calibration, switching to: detecting the onset of spontaneous breathing in the patient based on these signals, and synchronizing the provision of respiratory support to the patient with the onset of spontaneous breathing detected using these signals.

1. The name of this design product: High-flow respiratory humidification therapy device. 2. Purpose of the product with this design: It is used for treating patients with spontaneous breathing by providing a certain flow of heated and humidified respiratory gas. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

A computer-implemented method is provided to estimate a periodic feature, such as a period length or a period location, of a physiological rhythm, such as a cardiac rhythm or an autonomic respiratory rhythm. The computer-implemented method comprises receiving a signal representing the physiological rhythm, estimating a first set of periodic feature estimates based on the signal, generating a prior probability of the periodic feature based on at least a subset of the first set of periodic feature estimates, and estimating a second set of periodic feature estimates based on the first set and the prior probability. By using such a computer-implemented method, the accuracy of the signal is improved, in particular when the signal is obtained from an accelerometer arranged on the chest of a subject.

The present invention discloses a direct-acting medical demand valve, which includes a valve body, a valve core assembly disposed within the valve body, an upper valve cover assembly coupled to the upper portion of the valve body, and a lower valve cover assembly coupled to the lower portion of the valve body. The valve core assembly includes a lever drive assembly and a pressure-regulating spring assembly. This solution utilizes a lever drive assembly and a pressure-regulating spring assembly disposed within the valve body to generate a slight pressure change at the valve outlet to sense the patient's needs for gas delivery and gas cut-off. The pressure-regulating spring assembly can also adjust the valve's opening force, allowing gas delivery according to the patient's needs. A spring button is disposed within the valve cover assembly to cooperate with the lever drive assembly. When the patient is not breathing spontaneously, the button can be forcibly pressed to deliver gas, thereby improving the patient's survival rate.

The invention provides a common entropy balance adaptive control method and system, and belongs to the technical field of control systems. The system comprises a multi-mode physiological sensing module, a control decision module, an execution module and a feedback module, the signal output end of the multi-mode physiological sensing module is connected with the signal input end of the control decision module, and the instruction output end of the control decision module is connected with the instruction input end of the execution module. The state feedback end of the execution module is connected with the signal input end of the feedback module. The multi-mode sensing layer collects respiratory related entropy change and energy signals, the control decision layer generates instructions through a feedforward pre-judgment and self-adaptive algorithm, the execution layer adjusts ventilation through a rotary proportional valve, and the feedback layer monitors and corrects parameters. The system realizes co-entropy balance of a respiratory system, reduces invalid entropy increase, promotes autonomous respiration, improves the offline success rate, and provides a new'assistance but not substitution 'normal form for respiratory support.

A system for measuring the mechanical impedance of a patient's respiratory system during spontaneous respiratory activity characterised in that it comprises a fan, a motor driving said fan; said motor and said fan are placed inside a cavity; said cavity is divided into two sub-cavities separated from each other so as to prevent the passage of air, one containing the motor and the other containing the fan and comprising an initial end and a terminal end, both of which have access to the outside.

The invention relates to the technical field of medical instruments, in particular to a ventilation method and system comprising an adjustable trigger window and a breathing machine. The method comprises the following steps: calculating expiration time according to the set breathing frequency and inspiration time of a user; counting autonomous respiration parameters of the user in a preset time window; calculating a first trigger window candidate value and a second trigger window candidate value based on the autonomous respiration parameter; limiting the first trigger window candidate value to enable the first trigger window candidate value to be not greater than a second trigger window candidate value; combining the first trigger window candidate value and the second trigger window candidate value to obtain a trigger window duration; setting an upper limit value of the time length of the triggering window, and limiting when the time length of the triggering window exceeds the upper limit value; in the trigger window, if a trigger event is detected, starting one-time support ventilation; if the trigger event is not detected when the trigger window is ended, starting one-time control ventilation; and out of the trigger window, autonomous respiration with unlimited times is allowed to be carried out.

The application discloses a method for obtaining an autogenous breathing effort curve under mechanical ventilation based on a breathing machine waveform, which can calculate resistance and compliance in a patient's respiratory system through airway pressure and flow rate waveforms of the breathing machine when the breathing machine ventilates the patient, and then calculate the autogenous breathing effort of the patient during each breath according to the resistance and compliance and the pressure and flow rate waveforms. For each different patient, the method can calculate the change of pressure and resistance with time and the inspiratory effort intensity curve of each breath. The content can help doctors better judge the condition of the patient, thereby better assisting clinical treatment.

The utility model discloses a split type atomizing, humidifying and oxygen inhalation connecting set for an artificial airway, which effectively achieves the purpose of conveniently carrying out atomizing treatment and oxygen humidification on a patient with the artificial airway, and comprises an atomizer, a first connecting tube, a second connecting tube and a connecting cover, the upper side of the atomizer is detachably connected with the connecting cover, and the lower side of the atomizer is detachably connected with the connecting cover. The lower side of the atomizer is detachably connected with the first connecting pipe, the rear portion of the first connecting pipe is provided with an oxygen supply pipe, the second connecting pipe is in a T shape, and the front side of the second connecting pipe is fixedly connected with a pull ring. The device is simple in structure and convenient to use, can be matched with a patient who establishes an artificial airway with autonomous respiration, achieves the purposes of continuous humidification, atomization treatment and oxygen humidification, reduces the maintenance cost of the device, reduces the occurrence of related complications of the artificial airway, increases the comfort level of the patient, and can be matched with oxygen pipelines of different models.

The invention discloses a transmission device for assisting a small animal to autonomously breathe hyperpolarized gas, which is characterized in that a sealed breathing mask is used for replacing a trachea cannula, and stable pressure of atmospheric pressure at the breathing mask is used for replacing periodic pressure change under high-pressure forced ventilation at the cannula; the animal spontaneous respiration gas amount is used for replacing the manually set fixed gas amount, and the state of inhaled gas is controlled under spontaneous respiration to replace fully controlled mechanical ventilation in the respiration process; the invention further discloses a method for assisting the small animal in autonomously breathing the hyperpolarized gas, the device can supply the gas amount required by autonomously breathing to the experimental animal according to the self-breathing state of the experimental animal, and the gas amount inhaled by the experimental animal each time is determined by the self-breathing state, so that the experimental animal can autonomously breathe in a free state; lung expansion in an abnormal breathing state can be avoided, so that a more accurate ventilation function and qi-blood exchange function evaluation result is obtained.

The present application relates to the technical field of self-breathing anesthesia supplies, and particularly relates to a narcotic injection device for self-breathing anesthesia, which comprises an injector body and an injection needle part detachably installed at the lower end of the injector body, the injector body comprises a needle cylinder provided with a scale bar at the front end and a needle nozzle communicated at the lower end of the needle cylinder. In the present application, the original narcotic injector structure is upgraded and improved, a first extension part is arranged between the needle cylinder and the finger wing, a second extension part is added between the cross plug rod and the finger handle, and a needle adjusting mechanism is arranged between the needle and the needle plug. According to the actual anesthesia injection requirements, the puncture angle and the puncture depth of the needle can be conveniently adjusted, the abnormal problems such as the limited puncture angle of the needle, the insufficient puncture injection depth of the needle, the occlusion of the endoscope view and the dropping of the injector into the cavity are effectively reduced, and the convenience, stability and safety of the narcotic injection process are improved.

The present invention discloses a double-tube respiratory therapy device, which relates to the field of medical technology and includes a downward pressing mechanism, which cooperates with a treatment mechanism; the downward pressing mechanism includes a bed slidably installed in a sliding pile, a return spring is provided in the sliding pile, and a rack 1 is provided on the bed, which cooperates with a drive assembly, and the drive assembly is connected to the treatment mechanism, and the treatment mechanism includes a reciprocating motion assembly; the present invention adopts a double-tube design to provide effective help for patients with difficulty in spontaneous breathing.

The utility model relates to the field of medical equipment, and discloses an atomizing device capable of being connected with an autonomous breathing machine for medicine inhalation, which comprises an atomizing cup, the top of the front side wall of the atomizing cup is communicated and connected with an atomizing nozzle, the top of the atomizing nozzle is rotatably connected with a top plate, the inside of the top plate is fixedly connected with a sealing ring, and the sealing ring is fixedly connected with the atomizing nozzle. The rear side wall of the top plate is fixedly connected with a pressing buckle plate. Through the arrangement of the atomizing cup, the atomizing nozzle, the conductive probe, the three-way pipe and the five-way pipe, the problems that the treatment time is prolonged, and the workload and operation complexity of medical staff are reduced for patients who have serious illness conditions and need quick-acting medicine can be solved; the hole in the front end of the right part of the five-way tube is connected with the rear end of the atomizing cup, so that the medicine mist can be directly adsorbed to the oral cavity, the throat, the trachea, the bronchus, the pulmonary alveolus and the like of a patient and is absorbed by the mucosa of the patient to achieve the aim of treatment.

The present application discloses a method and device for regulating respiratory function by targeting the cervical spinal cord. Specifically, the present application provides a novel method for regulating respiratory rhythm by alternating electrical stimulation and mechanical ventilation to induce diaphragm and / or intercostal muscle movement, thereby achieving recovery and reconstruction of spontaneous breathing in patients with impaired respiration.

1. The name of the design product: high flow respiratory humidification therapy instrument oxygen therapy target management graphical user interface. 2. The use of the design product: for patients with spontaneous breathing, treatment by providing a certain flow of warm and humidified respiratory gas. 3. The design points of the design product: the shape and the design and content of the graphical user interface. 4. The picture or photo that best indicates the design points: top view. 5. The use of the graphical user interface: for the operation and interaction of the high flow respiratory humidification therapy instrument oxygen therapy target support mode management. 6. The human-computer interaction mode of the graphical user interface: in the lock screen interface state shown in the top view, when the "one-key linkage" control is clicked, the graphical user interface changes state, and the interface jumps to the parameter adjustment interface shown in the interface change state diagram.

A connection device, for mechanical ventilation and monitoring of spontaneous breathing of a patient (P), includes a fluid-guiding unit (9, 11, 15) and establishes a fluid connection between a medical arrangement (100) and a patient-side coupling unit (19). A volume flow sensor (90) measures an indicator of volume flow of fluid through the fluid-guiding unit. A volume flow sensor component (2) engages with an interior of the fluid-guiding unit. A homogenization unit (10) is nonrotatably inserted into the interior between the patient-side coupling unit and the component and includes two sieves and a connection element, which connects the sieves together. The homogenization unit homogenizes the flow of fluid through the fluid-guiding unit. An inner profile of the fluid-guiding unit and an outer profile of the homogenization unit together form a mechanical coding, which determines a defined rotation position of the homogenization unit in relation to the fluid-guiding unit.

The present invention relates to a portable breathing system designed to deliver a high fraction of inspired oxygen (FiO2) to individuals requiring respiratory support. The system is lightweight and portable and is suitable for use with both spontaneously breathing and mechanically ventilated patients. This portable breathing system is designed to be used in remote or resource-limited environments where conventional oxygen deliver infrastructure may be unavailable.

The disclosure provides a respirator, which includes a ventilation device, configured for providing ventilation airflow to a patient. The respirator further includes a first monitor, configured for monitoring a pressure or a flow velocity with which the ventilation device ventilates the patient, and a second monitor, configured for measuring a pressure change that reflects a self-respiratory effort of the patient. The respirator also includes a processor, configured for identifying an inspiratory trigger moment or an expiratory trigger moment of the patient according to the pressure change that reflects the self-respiratory effort of the patient.

A signal processing unit and method for determining a respiratory signal. The invention relates to a signal processing unit and a method of determining an estimate for a respiratory signal. The respiratory signal is a measure of the patient's own spontaneous respiratory activity and / or artificial respiration. A sum signal is generated from measurements measured in and / or at a body of a patient, the sum signal including a respiratory signal and a cardiac signal. An intermediate signal is calculated by compensating for the effects of cardiac activity on the sum signal. The reference attenuation signal segments describe an average time variation process of the contribution of the cardiac signal to the intermediate signal. For each heartbeat detected, an intermediate signal segment is generated. An attenuated intermediate signal segment is generated from the intermediate signal segment, for which purpose the adapted attenuated signal segment is applied to the intermediate signal segment. An adapted attenuated signal segment is calculated from the reference attenuated signal segment using at least one quality metric.

A self-breathing ventilation air cushion for shoes is made of an elastic material and is composed of an air cushion body and a sealing film which are attached in an airtight mode. The interior of the breathing tube is divided into an integrated double-breathing-cavity structure by a Z-shaped partition wall; the top walls of the two breathing chambers are provided with annularly arranged air inlet hole groups and air inlet valve diaphragm mounting holes, and the air inlet hole groups and air inlet valve diaphragms jointly form a one-way air inlet valve; an air outlet valve mounting hole and a one-way air outlet valve are arranged at the position slightly behind the middle of the two side walls of the breathing chamber of the air cushion II; supporting columns which are different in diameter and are uniformly distributed are arranged on the top walls of the two breathing chambers; and two groups of communicated radial ventilation grooves are formed in the front surface of the air cushion. The air cushion is arranged between the shoe sole and the shoe upper, walking treading is used as power, fresh air is inhaled into the shoe, vitiated air is exhaled out of the shoe, and the effects of removing heat, dampness, sweat and odor are achieved. The method is novel, unique, remarkable in effect and high in practicability.

An oxygen delivery device includes an oxygen inlet, a switching valve, an oxygen reservoir, a self-inflating bag, an oxygen outlet tube, and an oxygen outlet from the self-inflating bag. When the switching valve is in a first position, oxygen is diverted to the oxygen outlet tube where it is provided to a spontaneously breathing patient. When the switching valve is in a second position, oxygen flows into the reservoir bag and the self-inflating bag, where a clinician may pump the bag to assist the breathing of non-spontaneously breathing patient. In some versions, a clamp may be used in place of the switching valve.

The invention relates to the technical field of medical instruments, and discloses a breathing machine multi-mode intelligent triggering algorithm and breathing machine intelligent triggering algorithm method based on breathing characteristics of Chinese people, which comprises the following steps of: S1, operating a main control module to initialize control parameters such as pressure, flow and capacity of a breathing machine, and ensuring that a system is in a correct initial state when being started; and according to the breathing mode selected by the user, corresponding control algorithms and parameter settings are loaded so as to adapt to different breathing requirements. According to the breathing machine multi-mode intelligent triggering algorithm based on the breathing characteristics of the Chinese people, by comprehensively analyzing multi-mode data such as the flow, the flow change rate and the capacity, the breathing intention of Chinese patients can be more accurately recognized through the algorithm, the situations of false triggering and missing triggering are reduced, and the breathing intention of the Chinese patients is more accurately recognized. High synchronization of the breathing machine and autonomous breathing of Chinese patients is ensured, different pressure rising and releasing rates are further set according to different breathing physiological characteristics of Chinese males and Chinese females, and pressure support better meeting the requirements of the Chinese patients is provided.

The invention provides a breathing machine control method and system. The method comprises the steps that firstly, a resistance change signal which is caused by the autonomous breathing airflow change of a patient and generated through the piezoresistive effect of a functional layer is obtained from an electrode layer of an intelligent piezoresistive airflow management module; performing digital filtering on the signal, extracting a preset frequency band signal, determining local strain according to resistance change and a strain calibration curve, calculating a strain change rate, identifying adjacent electrode nodes of which the resistance change exceeds a threshold value, and calculating an effective area; calculating driving energy according to the local strain, the strain change rate, the effective area and functional layer carbon quantum dot concentration distribution obtained from a pre-stored lookup table; and finally, generating a voltage pulse according to the driving energy, applying the voltage pulse to the target micro valve through the electrode layer, heating the functional layer, and triggering the bionic molecular ratchet mechanism to open the micro valve. According to the method, sensing and executing atomic-scale collaboration are achieved, signal transmission processing delay is eliminated, man-machine synchronism is improved, lung differentiation ventilation can be achieved, and the defects in the prior art are overcome.