13 April 2020
This page details various bag sizes and why the bag supports in any design should be adjustable. The key is to find points on each bag that provide support and lateral constraint, but do allow the bag to flex as it is compressed. The bag should be centered laterally and vertically between the grippers. The table below gives dimensions at the contact points and the center of the bag. We place the bag with the bottom towards the motor and head, with patient valving, overhanging. Remember, this valving must be extended as described in Plumbing.
For practical purposes, spacing the bag mounts 21 cm apart should fit most bags, but the mounts must have vertical adjustability.
|bag||distance||bottom ø||top ø||center ø|
|Ambu Spur II|
& Adult Silicon
|Laerdal The Bag||21||na||40||139|
Below are pictures of each bag type that we measured, shown in Version 2:
Note: In Version 3 we added hooks and an elastic to prevent unintended bag removal.