39 results about "Capnography monitoring" patented technology

The present invention relates to novel nasal pulse oximeter probes that are configured to be placed across the septum of the nose. These probes are fabricated to provide signals to obtain arterial oxygen saturation and other photoplethysmographic data. The present invention also relates to a combined nasal pulse oximeter probe / nasal cannula. The present invention also relates to other devices that combine a pulse oximeter probe with a device supplying oxygen or other oxygen-containing gas to a person in need thereof, and to sampling means for exhaled carbon dioxide in combination with the novel nasal probe. In certain embodiments, an additional limitation of a control means to adjust the flow rate of such gas is provided, where such control is directed by the blood oxygen saturation data obtained from the pulse oximeter probe.

The present invention relates to novel lip / cheek probes for detection of pulse-based differences in light absorbence across the vascularized tissue of a lip or cheek of a patient. These probes are fabricated to provide signals to estimate arterial oxygen saturation, and / or to obtain other photoplethysmographic data. The present invention also relates to a combined probe / cannula. The present invention also relates to other devices that combine a pulse oximeter probe with a device supplying oxygen or other oxygen-containing gas to a person in need thereof, and to sampling means for exhaled carbon dioxide in combination with the novel lip / cheek probes. In certain embodiments, an additional limitation of a control means to adjust the flow rate of such gas is provided, where such control is directed by the blood oxygen saturation data obtained from the pulse oximeter probe.

The present invention describes a method and apparatus for non-invasive prediction of the “intrinsic positive end-expiratory pressure” (PEEPi) which is secondary to a trapping of gas, over and above that which is normal in the lungs; the presence of PEEPi imposes an additional workload upon the spontaneously breathing patient. Several indicators or markers are presented to detect and quantify PEEPi non-invasively The markers may include an expiratory air flow versus expiratory air volume trajectory, an expiratory carbon dioxide flow versus expiratory air volume trajectory, an expiratory carbon dioxide volume to expiratory air volume ratio, an expiratory air flow at onset of inhalation, a model of an expiratory waveform, a peak to mid-exhalation airflow ratio, duration of reduced exhaled airflow, and a Capnograph waveform shape.

An oxygen face mask to cover a user's nose and at least partially cover a user's mouth with lateral sampling ports; systems including such a face mask; and methods of using such a face mask.

A capnography measurement adapter and airway mask system includes a pair of gas input conduits for insertion into a nasal chamber of a mask housing. An adapter is mounted on the mask housing and includes a pair of suction conduit tubes for removal of air within the nasal housing. A sleeve member having a through passage extends into an internal chamber of the adapter and is fluidly coupled to a capnography monitor through a catheter and capnography monitor tubing.

A method and apparatus for qualitative sensory signal, capnography-guided intubation is provided. A qualitative sensory signal, such as an audible signal, is generated during intubation of a patient to provide an audible indication of carbon dioxide levels, so as to facilitate proper placement of an intubation tube. The frequency of the audible signal corresponds to measured carbon dioxide levels, thereby providing a simple, easy-to-interpret, audible indication of the current position of an endotracheal tube during intubation, as well as confirmation of proper placement of the tube. Alternatively, the qualitative sensor signal may be an omni-directional visual signal or a palpable vibratory signal.

An oxygen face mask and component system is provided, the mask is designed to cover a user's nose and at least partially cover a user's mouth, the mask having lateral ports. Systems and assemblies including such a face mask and additional components are further provided, including a colorimetric CO2 detector, a sealing cap with or without a resilient sealing flap, a capnography gas analysis unit, a non-rebreather valve, a pulmonary function module, nebulizer, a gas scavenging system, a gas reservoir system, a gas filter, sample lines that are either straight or at an angle, and an aerosol mask platform; and methods of making and using such a face mask are also provided.

Methods and systems for patient participatory care and monitoring are provided for applications including respiratory care, ECG monitoring, capnography, infusion pump alarm prevention / management, pressure sore prevention, incentive spirometry, consciousness monitoring during sedation, pain management and other care and monitoring modalities. A patient in-the-loop system includes an input interface for receiving data acquired from a monitoring, controlling or sensing device, a storage device for storing the data at a first location, and a processor for analyzing artifacts in the data and determining whether the patient provided a deliberate action with respect to the device as a response to a prompt or query. The processor can further initiate a variety of prompts and / or output queries stored in the storage device at a second location to the patient. The data derived from these patient-in-the-loop techniques are formatted to be received and interpreted by electronic medical record and electronic record keeping systems.

An oxygen face mask to cover a user's nose and at least partially cover a user's mouth with lateral sampling ports; systems including such a face mask; and methods of using such a face mask.

A capnograph system sensor head includes an airway adapter, a housing for receiving the airway adapter, a source of infrared radiation coupled to the housing for directing infrared radiation through the airway adapter, and a detector subsystem coupled to the housing and responsive to the infrared radiation after it passes through the airway adapter for providing an analog output. A circuit sub-assembly is integrated with the sensor head and includes a controller responsive to the analog output of the detector subsystem. The controller is configured to adjust the gain of the detector subsystem to output a digital signal representative of the amount of a particular gas flowing through the airway adapter.

A system is configured to perform capnometry / capnography, and / or other compositional analysis on a non-invasively ventilated subject. As such, the system determines amounts of a molecular species of gas (e.g., carbon dioxide, oxygen, etc.) excreted by the subject on a per-breath basis. Determinations of amounts of the molecular species of gas excreted are adjusted to reflect amounts of the molecular species of gas leaked from the non-invasive interface used to communicate with the airway of the subject.

A gas circuit has an outlet and an inlet. Circuit adapters are provided. An anesthesia breathing circuit has tubular breathing circuit hoses, a Y connector and a connecting elbow. The breathing circuit has an electronically conductive system of wires and contacts to form two unconnected parallel electric circuits. An endotracheal tube has a conductive strip. A capnograph has a sampling tube coupled to the breathing circuit. The capnograph is electrically coupled to the separate electric circuits. The capnograph begins an adjustable timer when the endotracheal connector completes the electrical circuit by connecting the endotracheal tube to the breathing circuit. The timer provides for the transmission of an alarm when the circuit had been completed and no carbon dioxide was detected in the breathing hoses within a predetermined amount of time. The timer also provides for the transmission of an alarm when the circuit had been completed and had been disconnected.

A capnography measurement adapter and airway mask system includes a pair of gas input conduits for insertion into a nasal chamber of a mask housing. An adapter is mounted on the mask housing and includes a pair of suction conduit tubes for removal of air within the nasal housing. A sleeve member having a through passage extends into an internal chamber of the adapter and is fluidly coupled to a capnography monitor through a catheter and capnography monitor tubing.

An oximetry and capnography monitoring system associated to a gas analyzer applied to an ECC procedure, in which a mechanical device based on a tubular circuit is contemplated, such that when the device is connected to the ECC equipment with the main purposes of monitoring the operation of the gas blender, analyzing the oxygenation chamber performance, and checking carbon dioxide outflow from the oxygenation chamber in such a way to prevent collapse within the oxygenation chamber and therefore increasing efficiency throughout the ECC procedure.

An oxygen face mask and component system is provided, the mask is designed to cover a user's nose and at least partially cover a user's mouth, the mask having lateral sampling ports, an oxygen port, and a facial access opening superior to the oxygen port. The opening may be sufficiently large to allow a surgical or diagnostic procedure to be performed on part of a user's face or to allow a physician's hands or other caregiver hand's to manipulate a scope or other devices into a user's mouth. Additional components are further provided, including a colorimetric C02 detector, a sealing cap with or without a resilient sealing flap, a capnography gas analysis unit, a non-rebreather valve, a pulmonary function module, nebulizer, a gas scavenging system, a gas reservoir system, a gas filter, sample lines that are either straight or at an angle, and an aerosol mask platform; and methods of making and using a face mask are also provided.

An improved medical capnographysystem (22) automatically determines the effect of therapy on the underlying patient. The system enable the determination of proper endotracheal tube or advanced airway placement, the effectiveness of CPR, and the occurrence of the return of spontaneous circulation (ROSC) or loss of spontaneous circulation by use of a therapy analyzer (36) implementing an analyze therapy algorithm (336). The system may be implemented in platform-independent hardware or software.

Respiratory insufficiency is detected by classifying preliminary breaths identified through a capnogram as being valid or artifact. Individual breaths are classified as being valid or artifact by determining values of a plurality of breathing parameters for a given breath, inferring a value for a key parameter from the determined values for the plurality of breathing parameters, and comparing the inferred value for the key parameter to a predetermined threshold.

A capnography module for a patient monitoring system includes a hardware switching mechanism and a software mechanism for switching the capnography module automatically between a mainstream monitoring mode and a sidestream monitoring mode. The hardware switching mechanism along with software detection is capable of detecting the connection of a mainstream capnography sensor and a sidestream sampling line and generates flags to notify the software switching mechanism which sensor or line is connected. The software switching mechanism notifies a controller board in the module which monitoring system is available and the controller board operates the module in the respective mode. The capnography module also includes a connector latching mechanism for securing the mainstream capnography sensor to the module and preventing accidental disconnection.

Breaths of a subject are identified based on the concentration of carbon dioxide at or near the airway of the subject. Troughs corresponding to inhalation are identified and plateaus corresponding to exhalation are identified. A breath is identified responsive to a trough being followed by a plateau.

An oxygen face mask and component system is provided, the mask is designed to cover a user's nose and at least partially cover a user's mouth, the mask having lateral ports. Systems and assemblies including such a face mask and additional components are further provided, including a colorimetric CO2 detector, a sealing cap with or without a resilient sealing flap, a capnography gas analysis unit, a non-rebreather valve, a pulmonary function module, nebulizer, a gas scavenging system, a gas reservoir system, a gas filter, sample lines that are either straight or at an angle, and an aerosol mask platform; and methods of making and using such a face mask are also provided.

The invention relates to medical instruments, in particular to a tracheal catheter capable of directly monitoring the end-tidal carbon dioxide partial pressure of an infant. The tracheal catheter comprises a catheter body, a cuff, a connector, an opening and a thin tube, wherein the cuff is connected to one end of the catheter body, the connector is arranged at the other end of the catheter body, the opening is arranged in a position, between the cuff and the connector and close to the cuff, of the catheter body and connected with the thin tube, and the tail end of the thin tube is connected with an end-tidal carbon dioxide monitor. The tracheal catheter has the advantages that the tracheal catheter is improved to solve the technical problem that due to the fact that the infant is low in body weight, if an existing tail-end sampling device is used, the dilution effect of fresh air flow in the tracheal catheter on carbon dioxide is evident, and the measured end-tidal carbon dioxide is evidently lower than an actual value, the sampling part opening 1 is close to the top end of the tracheal catheter, the inner diameter of the thin tube 2 is small, the fresh air quantity in the thin tube 2 is low, influence of the fresh air flow on the collected breathing gas at the top end of the tracheal catheter is small, the end-tidal carbon dioxide level can be reflected accurately, and the tracheal catheter is evident in use effect.

The invention discloses a system for monitoring ARDS development of patients. The system comprises a master micro controller unit (MCU), wherein the master micro controller unit (MCU) is separately connected to data interfaces of a mechanical ventilation-respiratory mechanics monitoring module, a pulse index continuous cardiac output monitoring module, a central venous pressure and pulmonary artery pressure monitoring module, an oxygen metabolism dynamic monitoring module, a fibreoptic bronchoscopy module, an end-tidal carbon dioxide monitoring module and a broncholveolr lvge fluid and pulmonary tissue pathological examination module through bidirectional buses; an output end of the master micro controller unit (MCU) is also connected to an input end of a critical degree judgment module; the output end of the critical degree judgment module is also connected to the input end of a communication module; and the output end of the communication module is connected to the input end of a center console. According to the system, real-time monitoring data can be acquired, so that comprehensive examination of the patients is facilitated, differential diagnosis of an ARDS and multiple diseases is facilitated, and meanwhile, level judgment is more conducive to follow-up treatment on different patients.

A capnography system (100, 400), comprising: a controller (110, 410) configured to obtain a sample gas flow from a physical interface (107) for a patient (101); determine a change in a characteristic of the sample gas flow during a sampling time interval; determine whether the change in the characteristic of the sample gas flow during the sampling time interval is equal to or greater than a corresponding threshold value;determine that supplemental oxygen is provided when it is determined that the change in the characteristic of the sample gas flow is equal to or greater than the threshold value; and determine that supplemental oxygen is not provided when it is determined that the change in the characteristic of the sample gas flow is less than the threshold value.

An endopharyngeal airway positive pressure ventilation device and method of use for ventilating a patient through a nasopharyngeal airway in surgical settings that is incapable of normal ventilation with current anesthetic techniques due to a risk for airway obstruction in surgical procedures requiring conscious sedation monitored anesthesia care (MAC). The invention includes a single-lumen endopharyngeal nasal tube with an eye shaped opening at its distal end and a cylindrical proximal end used as an adaptor for anesthetic applications such as positive airway pressure via JACKSON-REESE modified ambu-bag or other various anesthesiology applications. Contiguous to the distal end of the nasal tube is an end-tidal CO2 monitoring port (ETCO2). On the distal end of the flexible nasal ventilation tube is an eye opening allowing air flow to the posterior pharynx. The device further includes a modified JACKSON-REESE ambu bag which allows for controlled airflow to the patient during a procedure.

A monitoring device having a capnography capability employs a ventilation monitoring controller including a capnography monitor and a respiration monitor (21) for determining between a non-hyper-ventilating ventilation being applied to a patient and a hyperventilating ventilation being applied to the patient. In operation, the capnography monitor (20) analyzes a capnography waveform of the patient. The respiration monitor (21) determines the non-hyperventilating ventilation being applied to the patient based on an indication by an end-tidal carbon dioxide expired by the patient and / or a respiratory rate of the patient derived, partially or entirely, from the analysis of the capnography waveform by the capnography monitor (20), and determines the hyperventilating ventilation being applied to the patient based on a collective indication by both the end-tidal carbon dioxide expired by the patient and the respiratory rate of the patient derived, partially or entirely, from the analysis of the capnography waveform by the capnography monitor (20).

The invention discloses an oxygen mask with a carbon dioxide diagram monitoring port, and relates to the technical field of the oxygen mask. The oxygen mask with the carbon dioxide diagram monitoring port comprises a mask body. The left and right sides of the mask body are opened with connecting holes. Two sides of the mask body are connected with elastic belts by the connecting holes. The middle part of the outer wall of the mask body is connected with an oxygen hose locking head. The outer wall of the oxygen hose locking head is connected with an oxygen conveying pipe. The outer circle of the oxygen hose locking head is uniformly opened with air holes. The bottom of the outer wall of the mask body is connected with a carbon dioxide detecting port. The outer wall of the carbon dioxide detecting port is connected with a carbon dioxide conveying pipe. The left end of the mask body is covered by a rubber soft cushion. The oxygen mask with the carbon dioxide diagram monitoring port is capable of, through a carbon dioxide measurer, measuring the content of the carbon dioxide in the mask body and displaying in a display unit, and sending an alarm by an audible and visual alarm while the data of the carbon dioxide content exceeds the preset value. The humanization is better.