CAN CSA Z168.5.6-96:2016 pdf download.Expired-air pulmonary resuscitators
1.1 CAN CSA Z168.5.6-96 includes all devices designed to assist in the provision of expired-air pulmonary resuscitation. These devices are designed to aid in the protection of the rescuer from communicable diseases transmitted from the area covered by the device via bodily fluids and/or expired air. This Standard includes but is not limited to one-way valve/filter devices incorporating either a face mask, face shield, or oropharyngeal airway.
1.2 This Standard does not indlude devices designed for oesophageal intubation because of the severity of the complications which may attend their use. In addition, laryngeal masks and combined pharyngeal-tracheal airways are not included because studies that evaluate their eficacy for expired-air resuscitation in emergency settings have not yet been concluded.
10.1.2.2 Test Method
(a) Fix a compressive load cell to the head of an adult resuscitation manikin that has had its airway completely occluded. Apply the mask to the face of the manikin until the load cell indicates an applied force of 50 N and maintain this force level. Attach a variable flow-rate source to the face-mask patient connector using a breathing hose and monitor the flow of gas into the face mask and the pressure in the mask. Slowly increase the flow rate of gas into the mask until the mask pressure is at least
maintained at 2.5 kPa.
(b) Repeat (a) with the manikin head replaced by a standard 4 L chemical bottle and verifty that the corresponding leakage rates are produced.
Note: The mask seal should be capable of deforming to meet individual anatomica! variations in facial features if an adequate seal is to be formed. Aithough the head of the manikin used in the test method is not representative of all victims and the rigid surfaces do not mimic skin flexibilit a mask that forms a good seal on both the manikin and the bottle displays its ability to deform to a range of facial features.
10.9.2 Test Method
Arrange the device with the bite block on a flat, noncompressible surface. If it is not possible to achieve contact between the bite block and the surface, cut away the device to achieve contact without changing the integrity of the bite block. Connect one port of the bite block to a compressed air source producing 50 L/min. Measure the pressure at the port where the air source is connected. Attach weights having a total mass of at least 75 kg to a rod or container with a base having dimensions of 2 x 20 mm. Place the base of the rod or container on the bite block and measure the pressure.CAN CSA Z168.5.6-96 pdf download.