A spring bridge (40), for a spring bridge breathing bag plate system (80) of a closed-circuit respirator (100), includes a spring bridge carrier (42) for the arrangement of at least one spring element (82) of a spring bridge breathing bag plate system (80) and at least one fastening element (44) for holding the spring bridge (40) at the closed-circuit respirator (100). The at least one fastening element (44) is a rotating element and/or a sliding element for the rotatable and/or sliding movement of the spring bridge carrier (42) at and relative to the closed-circuit respirator (100). A spring bridge breathing bag plate system (80) is provided for a closed-circuit respirator (100) as well as for a closed-circuit respirator (100).

A spring bridge (40), for a spring bridge breathing bag plate system (80) of a closed-circuit respirator (100), includes a spring bridge carrier (42) for the arrangement of at least one spring element (82) of a spring bridge breathing bag plate system (80) and at least one fastening element (44) for holding the spring bridge (40) at the closed-circuit respirator (100). The at least one fastening element (44) is a rotating element and/or a sliding element for the rotatable and/or sliding movement of the spring bridge carrier (42) at and relative to the closed-circuit respirator (100). A spring bridge breathing bag plate system (80) is provided for a closed-circuit respirator (100) as well as for a closed-circuit respirator (100).

A bayonet connector (112, 128) suitable for connecting a filter cartridge (72) or an air supply tube to a respirator (10, 14). The bayonet connector (112) has a tubular male part (112) and a female part. The male part has a tube (114) with two or more lugs (130, 132) formed on it, which engage with engaging ribs (136, 138) located on an interior sidewall of the female part (128), or vice versa. The lugs (130, 132) and their corresponding engaging ribs (136, 138) are located at different axial positions.

An improved safety device for a self-contained breathing apparatus, and an improved self-contained breathing apparatus having thermal imaging capabilities.

In some examples, a system includes an article of personal protective equipment (PPE) comprising one or more sensors, the one or more sensors configured to generate usage data that is indicative of an operation of the article of PPE; and at least one computing device comprising a memory and one or more computer processors that: receive the usage data that is indicative of the operation of the article of PPE; apply the usage data to a safety learning model that predicts a likelihood of an occurrence of a safety event associated with the article of PPE based at least in part on previously generated usage data that corresponds to the safety event; and perform, based at least in part on predicting the likelihood of the occurrence of the safety event, at least one operation.

In some examples, a system includes an article of personal protective equipment (PPE) comprising one or more sensors, the one or more sensors configured to generate usage data that is indicative of an operation of the article of PPE; and at least one computing device comprising a memory and one or more computer processors that: receive the usage data that is indicative of the operation of the article of PPE; apply the usage data to a safety learning model that predicts a likelihood of an occurrence of a safety event associated with the article of PPE based at least in part on previously generated usage data that corresponds to the safety event; and perform, based at least in part on predicting the likelihood of the occurrence of the safety event, at least one operation.

A method for controlling mechanical lung ventilation is described. The method may include intermittently switching the airway pressure of the patient from a substantially constant high baseline pressure level to a substantially constant low baseline pressure and vice-versa such that the patient is able to breathe spontaneously in both high and low baseline pressure levels; detecting an inspiration effort by the patient inside a trigger time window that immediately precedes a switching event of the intermittently switching the airway pressure; maintaining a baseline pressure at the level in which the inspiration effort was detected so that the patient can complete the inspiration-exhalation cycle; and switching the baseline pressure level after a delay time.

Disclosed is an apparatus for providing controlled flow of inhalation-air from at least an air-reservoir to a mask. The apparatus includes a control unit and a switch unit. The control unit controls the level of the inhalation-air flowing from the air-reservoir to the mask. The control unit includes a housing to receive the inhalation-air from the air-reservoir, plurality of ducts protruding from the housing to connect with the air-reservoir and with the mask and a valve configured to control the flow of inhalation-air from the plurality of ducts. The switch unit positions a valve to selectively open and close the plurality of ducts for regulating the flow of inhalation-air from the air-reservoir to the housing.

A breathing equipment training device and a method for breathing training using a breathing equipment training device. The breathing equipment training device includes a shell and a diaphragm. The shell includes a first opening and a second opening, the first opening configured to be inserted into a breathing opening in a mask to form a connection with the breathing opening of the mask, and the second opening configured to be exposed to ambient air. The diaphragm is positioned in an inner cavity of the shell about the second opening, and configured to impede airflow into the shell through the second opening and to traverse along an axis between the first and second openings.

A breathing equipment training device and a method for breathing training using a breathing equipment training device. The breathing equipment training device includes a shell and a diaphragm. The shell includes a first opening and a second opening, the first opening configured to be inserted into a breathing opening in a mask to form a connection with the breathing opening of the mask, and the second opening configured to be exposed to ambient air. The diaphragm is positioned in an inner cavity of the shell about the second opening, and configured to impede airflow into the shell through the second opening and to traverse along an axis between the first and second openings.