78results about "Respiratory device testing" patented technology

Disclosed are methods and / or a system of incident based camera device activation in a safety system of a structure having a fixed piping system implemented therein to supply breathable air thereacross. In accordance therewith, one or more sensor(s) associated with one or more component(s) of the safety system is integrated with a computing platform executing on a data processing device. Based on the integration of the one or more sensor(s) with the computing platform, one or more environmental parameter(s) of the one or more component(s) of the safety system is sensed. One or more camera device(s) in a vicinity of and / or on the one or more component(s) of the safety system is automatically activated based on determining, from the sensing, occurrence of an incident.

An electronically controlled tactile alert system for use in equipment, such as personal protective equipment like respiratory protection systems used in firefighting, comprising one or more sensors, a processor, and an actuator to generate impulses that are tactilely sensed by a user of the equipment.

The embodiment of the utility model discloses simple testing equipment for a positive pressure type air respirator, and relates to the technical field of emergency rescue equipment. The shape of the front surface of the simple testing equipment for the positive pressure type air respirator is matched with the shape of a mask valve body arranged on an air exhalation mask, so that the front surface of the simple testing equipment for the positive pressure type air respirator is butted with the mask valve body of the air exhalation mask; a pressure testing module, a power supply module, a master control module and a communication module are further installed in the simple testing equipment for the positive pressure type air respirator. The simple testing equipment for the positive pressure type air respirator provided by the embodiment of the utility model is extremely simple in structure, easy to use and low in manufacturing cost, and is convenient for on-site rescue workers to quickly test the pressure in the mask.

Disclosed are methods and a safety system of a structure for an air / environmental parameter based automatic closing of a valve to isolate breathable air supplied to a level of the structure having the breathable air supplied thereto from a source. In accordance therewith, a parameter of an environment of the level of the structure and / or the breathable air supplied thereto is sensed using a sensor associated with one or more component(s) of the safety system. In response to the sensing, the one or more component(s) automatically closes the valve associated with control of the supply of the breathable air to the level to isolate the breathable air supplied to the level.

A test fixture facilitates non-destructive testing of a protective mask. The test fixture includes a mock facial structure, a clamping form that makes a seal around at least part of the facial structure, and can employ the retaining straps of the protective mask to a make a seal around at least part of the facial structure. In use, the protective mask is tested in situ on the facial structure. In some examples, the clamping form has a negative contour of the mock facial structure or of the outer surface of a protective mask that is to be tested. The testing can include repetitive testing of the fit, structural components (e.g., ultrasonic welds and straps), and the degradation of materials as a function of donning / doffing or environmental factors (e.g., temperature and humidity).

The present disclosure provides an apparatus and methods for opening a valve of a respirator for respirator fit testing. An apparatus may include: a first end, wherein the first end comprises a cavity, wherein the cavity is configured to receive a male post of an adapter; a second end, wherein the second end comprises at least one protrusion; and an internal flange, wherein the internal flange comprises an interlocking feature, wherein the interlocking feature is configured to interact with at least one circumferential groove spaced axially along the male post to establish at least one adjustable height; wherein the apparatus rotates clockwise or counterclockwise until the at least one protrusion is engaged with the valve, a valve housing, or a cross section within housing.

Improved respirator fit test devices including piezoelectric pumps that reduce noise and vibration of the device. The devices may include two or more piezoelectric pumps, wherein a first pump moves sheath air through a differential mobility analyzer and a second pump alternately moves aerosol from inside or outside a respirator through the differential mobility analyzer. A size selected portion of each aerosol sample is then moved through a condensation nuclei counter. Control circuitry enables user selection of a respirator type to be tested, wherein the differential mobility analyzer may be enabled or disabled based on the user selection. The control circuitry further enables calculation of a fit factor corresponding to a quantitative effectiveness of the respirator fitting a user based on signals from the condensation nuclei counter for each aerosol sample.

A self-contained breathing apparatus (SCBA) is presented that comprises a backframe configured to support a high-pressure air cylinder, a sensor module mounted to the backframe, and a console coupled to the SCBA. The console comprises a pneumatic connection coupled to the high pressure air cylinder, an electronics connection coupled to the sensor module, and a display component. The console is configured to operate in a functional mode and in an equipment check mode. In the equipment check mode, the console is configured to provide equipment check instructions to a user of the SCBA. In the equipment check mode, a sensor signal is received from the sensor module using the electronics connection. A pressure of the high-pressure air cylinder is measured using the pneumatics connection.

A system for ensuring proper fit of a negative-pressure respirator is disclosed. The system includes a negative-pressure respirator that a user can wear, and a sensor positioned within the interior of the respirator. The sensor contains a sensing element capable of detecting fluid-soluble particulate matter and generating data based on shifts in an electrical property of the sensing element. This data is forwarded to a mobile computing device configured with one or more processors and associated memory. The mobile device, upon executing instructions stored in its memory, receives the particulate matter data from the sensor and analyzes whether the respirator meets a preset fit-test criterion. Based on that determination, the device presents at least one graphical element on its display, instructing the user to perform a specific action that facilitates or confirms proper fit of the respirator.

A device for assessing particulate matter (PM) exposure in a respirator is provided. The device includes a first PM sensor, a second PM sensor, and a processor communicatively coupled to the first PM sensor and to the second PM sensor. The first PM sensor is configured to measure a PM concentration level inside of the respirator. The second PM sensor configured to measure a PM concentration level outside of the respirator. The processor is configured to determine a ratio of the PM concentration level outside the respirator and the PM concentration level inside of the respirator. The processor is further configured to determine a particulate exposure risk within the respirator based on whether the ratio satisfies at least one predetermined threshold value. The processor is further configured to provide a message indicative of the particulate exposure risk.

The invention relates to a respiratory protection method comprising the steps of1) providing a mask comprising:a transparent mask body (1) having a periphery comprising an upper portion (36), a right lateral portion (2), a left lateral portion (3), and a lower portion (4) ;a membrane (8) located on the periphery of the transparent mask body (1) ;a right retaining means (9) and a left retaining means (10) ; and2) placing the mask on the face of a user, by positioning the membrane (8), at the lower portion (4) of the periphery of the mask body (1), in contact solely with the underside of the user's jaw.The invention also relates to a respiratory protection mask suitable for implementing the aforementioned method.

A communication assembly (1) for avoiding interference due to oxygen flow noise comprising: a) a breathing mask (10) comprising: a main body (14) having a face shell (11) with a breathing cavity (12) and a regulator (16) delivering breathing gas, b) a microphone (22) configured to capture sound signals in said breathing cavity, c) a test button (8) for supplying breathing gas to said breathing cavity, d) an attenuation device (34); e) a sound monitoring system (25), f) a controller (32) configured to cause said attenuation device to operate in an active mode when detecting an airflow noise passing through said breathing cavity (12) during inhalation of said user and to operate in an inactive mode when detecting a human voice or an airflow noise in said breathing cavity (12) in a stowed configuration, g) a transmitter (38) for transmitting an output signal (58).

A method for determining personal protective equipment (PPE) comfort for an individual wearer includes defining a first anatomical shape data representative of an anatomical area of the individual wearer prior to donning a PPE, a second anatomical shape data representative of the anatomical area of the individual wearer after donning the PPE, and comparing the first anatomical shape data with the second anatomical shape data. The method further includes determining a soft skin tissue deformation at a plurality of predetermined anatomical positions based on the comparison between the first anatomical shape data and the second anatomical shape data, and determining a displacement comfort threshold (CTd) value based on the soft skin tissue deformation. The method also includes determining a pressure pain threshold (PPT) value, and determining a comfort metric based on the PPT values and the CTd values. The method also includes generating a notification corresponding to the comfort metric.

The present disclosure provides an apparatus and methods for opening a valve of a respirator for respirator fit testing. An apparatus may include: a platform connecting a first end to a second end; wherein the first end is configured to attach to an adapter of a respirator, wherein the adapter comprises a base having a cavity configured to receive the first end; wherein the second end comprises at least one protrusion extending from the platform; wherein the at least one protrusion comprises a length capable of extending into a valve in a respirator; and wherein the at least one protrusion is inserted into the valve to open the valve.

A patient simulator system includes: a simulated torso; simulated arms; and simulated legs. The simulated torso includes: an upper torso bracket interconnecting the simulated arms, and a lower torso bracket interconnecting the simulated legs. The upper torso bracket is connected to the lower torso bracket via a torso articulation joint.

A system (1) is described for testing personal protective equipment (2) for the respiratory tract to assess the effectiveness of its protection against biological agents, the system (1) comprises : a sealed test chamber (4) housing a Sheffield head (5) having an oral-nasal opening (6) onto which one piece of personal protective equipment (2) is applicable to cover it; a generator device (3) for generating an aerosol containing one or more biological agents, preferably viral and / or bacterial ones, the generator device (3) being configured to supply an amount of said aerosol inside the test chamber (4); and a respiration simulation system (8) configured to simulate the human breath, fluidly connected to the Sheffield head (5) and configured to control an aspiration of the aerosol from the test chamber (4) through said oral-nasal opening (6) and through the personal protective equipment (2) applied thereto; the respiration simulation system (8) comprises: a cylinder (12) and a piston (13) engaging the cylinder (12) in a sliding manner; an actuator (14) configured to control the sliding of the piston (13) inside the cylinder (12); and a transmission assembly (15) operationally interposed between the actuator (14) and the piston (13); the transmission assembly (15) comprises a worm screw or a ball screw (16) to transform a rotary motion of the actuator (14) into a reciprocating motion of the piston (13) inside the cylinder (12).

An apparatus (100) for testing respiratory protective equipment (200) for leaks to the outside of the same comprises a cabin (110), generators (140, 150) for supplying NaCl aerosol and air to the cabin (110), a measuring equipment (160) for determining leaks in the respiratory protective equipment (200) to the outside of the same based on a concentration of NaCl aerosol flowing out of the cabin (110) with respect to a reference concentration of NaCl aerosol, and an air extractor (170) for extracting air from the cabin (120) to the measuring equipment (160). The cabin (110) has access area (130) for placing a Sheffield torso (220) in the cabin interior (120) on which the respiratory protective equipment (200) to be tested is fitted.

An exemplary apparatus and method are disclosed for a respiratory protective device. The respiratory protective device can be customized to the facial profile of a user and ensure proper fit and operation of device and attached breathable filter. In some embodiments, the device is configured to continuously monitor, via an integrated sensor embedded in the device's frame, the fit or proper particulate-filtering operation of the respiratory protective device. The sensor embodiment can ensure proper operation of respiratory protective device while providing monitoring and tracking of the fit to ensure personal safety for the healthcare professionals wearing the device.

A respirator filter adapter, comprising: a main body having a rear-facing side configured to be connectable to an air inlet of a respirator, and a front-facing side configured to be connectable to an outlet of a filter, and an opening extending through the main body from the front-facing side to the rear- facing side; a lid arranged over the opening on the front-facing side of the main body, wherein the lid is movable between an open position in which the lid is spaced apart from the opening to permit air to flow through the opening, and a close position in which the lid covers the opening to prevent air from flowing through the opening; and a spring element arranged under the lid, wherein the spring element biases the lid towards the open position by default when no external force is applied on the lid, and the spring element is responsive to an external force selectively applied on the lid by permitting the lid to be temporarily actuated to the close position.

An arrangement comprising a breathing air source 30, a respiratory mask 2, and an intermediate piece 100. A device-side coupling point 22 of the intermediate piece can be connected to a coupling point

The invention relates to a system for simulating the respiration of a living being comprising at least one gas module and one control module, wherein the control module is set up and configured to mathematically simulate the respiration of a living being in a first simulation part and to control the gas module in a second simulation part based on the mathematical simulation from the first simulation part.

A wearable respirator fit assessment system for real-time fit testing and continuous monitoring of respirators. The system includes a wearable device that attaches to the respirator and incorporates multimodal sensors, including pressure and temperature sensors, for detecting variations in the respirator's dead space. An embedded microcontroller processes the sensor data using a machine learning model running on the device to classify respirator fit without needing any other hardware. The system provides immediate feedback to users through visual, auditory, and haptic notifications and can communicate fit data to a connected user device via Bluetooth or other wireless protocols. A companion mobile application guides users through fit testing exercises, displays real-time results, and provides educational resources for proper respirator use and maintenance. The system also supports continuous fit monitoring during respirator use, enabling users to receive alerts for seal degradation or improper fit.

To provide a protective mask to which a tube for measuring fit testing can be connected without using an adapter or a simulated surface body.SOLUTION: The protective mask 10 includes a face body 11 to be worn on the face in an airtight state, an opening 15 for connecting a measuring tube 2 extending from an external device 1 for measuring the airtight state of the face body 11, and a plug 20 for closing the opening 15 in an openable / closable manner.SELECTED DRAWING: Figure 2

A microphone device and a plurality of the microphone device brackets configured to be positioned within the breathing cavity of a plurality of respirator types. Also included is a configuration and indicator capabilities for the microphone device within the plurality of microphone device brackets.

Method (100) for checking the operational readiness of a closed-circuit breathing apparatus (1) in a step sequence for carrying out the check with the steps: - Continuous metrological acquisition (104, 104') and recording of pressure measurement signals P L a low-pressure sensor (41) arranged in or on a low-pressure system (77) of the closed-circuit breathing apparatus (1), - Identification based on the pressure measurement signal P L (81) of the low-pressure sensor (41) whether there is currently a situation in which an inflow of quantities of gas into the low-pressure system (77) has begun, - Storage of a first pressure measurement signal P1 (109) at a first time t1 (108), which indicates the identified pressure situation immediately after the start of the inflow of gas quantities into the low-pressure system (77) with a breathing bag (3), - Storage of a second pressure measurement signal P2 (114), which indicates a pressure situation at the end of the inflow of gas quantities into the low-pressure system (77) at a second time t2 (113), - Formation (115) of a difference value ΔP (ΔP = P2 - P1) (116) between the first pressure signal P, (109) and the second pressure signal P2 (114), - Performing a comparison (117) between the difference value ΔP (116) with a difference threshold value P C (118) - Determining a result (94, 95) of the verification of the functionality of the closed-circuit breathing apparatus based on the comparison (117), - Provision of an output signal (88) which indicates the result (94, 95) of the check.

Training system (1) for users (21) of a respiratory protective device (5) comprising a control unit (3) and at least one training device (2a, 2b, 2c) for the physical exertion of the user (21), wherein the control unit (3) includes a communication module (4) configured to receive a breathing air consumption value (A) detectable by a respiratory protective device (5) and a stress value (B1, B2, B3) detectable by the at least one training device (2a, 2b, 2c), wherein the stress value (B1, B2, B3) includes information about work performed by the user (21) on the at least one training device (2a, 2b, 2c), and wherein the control unit (3) is configured to determine a training status based on the breathing air consumption value (A) and the stress value (B1, B2, B3) and to generate an output signal (S) which The invention includes information about the training status. Furthermore, the invention relates to a training system 20, a method, and a computer program product.

An apparatus (100) for testing respiratory protective equipment (200) for leaks to the outside of the same comprises a cabin (110), generators (140, 150) for supplying NaCI aerosol and air to the cabin (110), a measuring equipment (160) for determining leaks in the respiratory protective equipment (200) to the outside of the same based on a concentration of NaCI aerosol flowing out of the cabin (110) with respect to a reference concentration of NaCI aerosol, and an air extractor (170) for extracting air from the cabin (120) to the measuring equipment (160). The cabin (110) has access area (130) for placing a Sheffield torso (220) in the cabin interior (120) on which the respiratory protective equipment (200) to be tested is fitted.

A fit detection system for a respiratory protection device is presented that includes an infrared camera that captures an image sequence of a user wearing the respiratory protection device. The system also includes a temperature change detector that analyzes images in the image sequence and detects a temperature change profile of the respiratory protection device. The system also includes a communication component that communicates a fit indication based on the detected temperature change profile.

A fit detection system for a respiratory protection device is presented that includes an infrared camera that captures an image sequence of a user wearing the respiratory protection device. The system also includes a temperature change detector that analyzes images in the image sequence and detects a temperature change profile of the respiratory protection device. The system also includes a communication component that communicates a fit indication based on the detected temperature change profile.