35 results about "Respiratory simulator" patented technology

A breath simulator for supplying a breath test analyzer with a sample effluent of ethyl alcohol that controls headspace and adjacent effluent passageway temperature.

A breath simulator for supplying a breath test analyzer with a sample effluent of ethyl alcohol that controls headspace and adjacent effluent passageway temperature.

The invention discloses an automatic testing device for dynamic respiration resistance of a mask. The testing device comprises a head mold, a respiration simulator connected with the head mold through a pipeline, a pressure sensor, a lower computer and an upper computer, wherein the respiration simulator comprises an inspiration air source vacuum pump, an expiration air source compression pump, a reversing device solenoid valve and a mass-flow controller; the lower computer is connected with the solenoid valve, the pressure sensor and the upper computer, and a direction, a flow speed and airflow quantity of the respiration simulator can be controlled through receiving a signal of the upper computer, so that simulated respiratory frequency and tidal volume are adjusted; meanwhile, a voltage signal of the pressure sensor is received and is transmitted to the upper computer. The automatic testing device for the dynamic respiration resistance of the mask, disclosed by the invention, can be used for finishing a test on the dynamic respiration resistance of the mask; a correlation curve between dynamic respiration airflow and respiration resistance, and two respiration resistance property indexes including maximum expiration resistance and maximum inspiration resistance can be measured, so that the automatic testing device can be applied to a mask detection industry, and rapid measurement of the dynamic respiration resistance of the mask is realized.

A Self-Contained Breathing Apparatus (SCBA) regulator is tested using a breath simulator having (i) a cup-shaped housing defining an interior volume and an open end, and (ii) an empty syringe with a plunger disposed therein and terminating in a dispensing tip coupled to the housing for sealed fluid communication with the interior volume thereof.

The invention relates to the field of medical equipment, in particular to a breathing simulator for cardiopulmonary exercise function testing. Cardiopulmonary exercise function testing has gradually become popular in China. It is mainly used in the fields of rehabilitation medicine and sports medicine. It provides clinical guidance with quantifiable data for preoperative evaluation, postoperative rehabilitation, and competitive training, and provides quantifiable data references for clinicians. . Since the gas composition, gas concentration, and gas flow rate inhaled and exhaled by the human body are inconsistent under different conditions of time, environment, and state, and the initial conditions are difficult to reproduce, the cardiopulmonary indicators measured each time are always different. The measurement results The poor reproducibility and consistency of the results hindered further research on cardiopulmonary exercise testing. In order to overcome the deficiencies of the prior art, a breathing simulator for cardiopulmonary exercise function testing is provided, which can relatively stably simulate the gas composition, gas concentration, and gas flow rate inhaled and exhaled by a human body.

A simulated living entity (SLE) HAS a body formed of cushioned material, a contact area on an surface of the body, a heating panel under the contact area, a microphone positioned proximate one end of the exposed surface, a speaker positioned proximate the microphone, a heartbeat simulator, a breath simulator proximate the microphone and speaker, and a control system within the body comprising a microprocessor, a coupled data repository, a power supply, wireless communication circuitry, and a digital bus. The heating panel heats the contact area, the heartbeat simulator provides feeling and sound of a beating heart, the breath simulator provides air intake and exhaust, and the speaker provides sounds of a person sleeping, synchronized with the breath simulator.

A snore module device that simulates patients' breathing patterns by producing pressure and flow oscillations similar to those encountered in actual patients for use with a breathing simulator generating breathing waveforms and controller / interface includes a moving platen driven by a linear motor or voice coil providing changes in the aperture of a passage of air through an air gap by moving the platen relative to the ceiling of a chamber.

A protective mask testing system and testing method belong to the technical field of daily necessities protective performance testing. The test system includes a test chamber, a skull model placed in the test chamber, a breathing simulator, an aerosol generator and a real-time monitoring device. The test chamber is equipped with a laser particle counter I, a laser particle counter II, a temperature control device and a temperature and humidity control device. Sensing device, an air chamber is set in the skull model, and the air chamber is respectively connected to a breathing simulator, a laser particle counter II, an oral ambient gas sampling tube, and a nasal ambient gas sampling tube; the laser particle counter I is used for Measure the initial concentration of particles in the test cabin; the laser particle counter II is used to measure the concentration of particles filtered by the mask; the temperature and humidity sensing device is used to measure the humidity and temperature in the test cabin; through the real-time monitoring device Control and test the protective performance of the mask to be tested. The invention not only satisfies the national standard, but also satisfies the diverse testing requirements of customers.