How to make the Porta-Lung more user Friendly

From the days of the company’s creation, Porta-Lung Inc has improved the materials used with the Porta-lung by leaps and bounds. In the old days I used to use a plastic collar which was paper thin. Someone could poke a hole in it with their fingernail by accident, creating problems in the neck seal. Now they use nylon and polartek collars which are thicker and softer on the neck. I like the polartek collars best because they give a better seal so you don’t have to tighten the collar as much.
I believe customization to certain features of the Porta-Lung might be a good idea. For some people, the inside length might not be long enough so customizing it for tall people would make the product more appealing to a wide range of people. If the patient has to stay in the machine all the time, it might be wise to invent a system for them to read while in there. For instance, I would put a shelf on the front to hold the book and then put a remote inside for the patient to turn the pages.