Lung Function Model

In my previous review I was explaining how poorly this device was built. Basically the bell had such a rough edge that it was cutting through the membrane. Carolina medical contacted me as soon as I wrote my review. They sent me for free a new membrane to fix my unit. They talked to the manufacturer and explained the problem. So it looks like the new models will not have that problem. I am very impressed by how Carolina Medical took care of business. It was fantastic. I give them a 99/100. Why not a full 100? well, because the replacement membrane was way thinner than the original. I know, I am a tough customer, but I will keep buying from Carolina, they know how to take care of their customers.

I was so glad to find this product. We have two lung models and the latex on both was torn and worn out. This was such a money saver and was extremely easy to replace. Thank you for keeping budgets in mind!

They have been bought for the lab I work in a few months back. I used them (6) for my A&P class this week. They are simple yet effective in demonstrating how diaphragm helps with inhalation and exhalation. The students liked it, I saw their comments in lab report and discussion about how this model helped them get a grasp of the concept. Did not give five stars as I am not sure how long the product will last. I used it the first time.

Came nicely packaged but doesn't really blow up the balloons because its hard to grasp the bottom (diaphragm) to increase the volume of the container

I have bought this product at two different schools in the last 35 years of teaching. I love the product but I do have to replace the diaphragm every year as it gets brittle and tears after just one use in my A&P class.

It could have been a great product but it is very poorly engineered. The rim onto which the membrane is attached is very sharp, so when you use the product, after a while the rim cuts through the membrane and the product is destroyed. Mine did not last 2 school years.

The rubber got brittle and broke after a couple months and no one used it.