{"id":58,"date":"2024-05-16T22:04:48","date_gmt":"2024-05-16T22:04:48","guid":{"rendered":"https:\/\/scholars.spu.edu\/breatheez\/?page_id=58"},"modified":"2024-05-17T03:38:59","modified_gmt":"2024-05-17T03:38:59","slug":"mechanical-work","status":"publish","type":"page","link":"https:\/\/scholars.spu.edu\/breatheez\/mechanical-work\/","title":{"rendered":"Mechanical Design"},"content":{"rendered":"\n

Mechanical and Electrical Housing <\/h1>\n\n\n\n
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The mechanical housing of a BVM device refers to the physical components that make up the device, including the bag, valve, mask, and casing. The design and quality of these components are critical for several reasons like durability, reliability, and ease of use.<\/p>\n\n\n\n

The electrical housing encompasses the electronic components and circuitry that power automatic BVM devices. These components are essential for delivering consistent and controlled ventilation, especially when manual operation is not feasible. Key aspects of the electrical housing include: consistency, control, and safety features.<\/p>\n\n\n\n

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Compression Subsystem<\/h2>\n\n\n\n
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This subsystem’s goal is to adequately compress the BVM (Bag Valve Mask) in a controlled manner to deliver air to the patient.<\/p>\n\n\n\n

How the Subsystem Works<\/summary>\n

The design consists of two stepper motors that move lead rods back and forth, allowing the motor\u2019s rotational motion to be translated into linear motion. This allowed us to attach a wall, better known as the compression wall, to deflate the BVM held still at the end of the track.<\/p>\n<\/details>\n\n\n\n

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These design choices were made mostly due to the immense accuracy of the stepper motors. Their \u201csteps\u201d allow us to understand the linear displacement we\u2019d need to deflate the BVM to the correlated tidal volume of air pushed out to the patient.<\/p>\n<\/div><\/div>\n\n\n\n

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Through testing, we learned that there is a near-linear relationship between the volume of air outputted and the linear distance that the compression wall was displaced.<\/p>\n<\/div>