Dirty Doors and A-maze-ing Entryways

In recent years, I’ve developed an interest in design, and in particular how both good and bad design impact humans. One outcome of that newfound interest was a Twitter account, @DunnyDesign. You can read a bit about it here, but it essentially documents and considers various aspects of toilet and bathroom design that I come across in daily life.

Probably the first aspect relating to toilets design that made me sit up and take notice, and was likely the impetus behind @DunnyDesign, was when I noticed that public toilets, especially those on large commercial premises such as shopping centres and cinema complexes, had slowly but surely transitioned from a “double door” entry to, what I refer to as, a “maze” entry. Continue reading “Dirty Doors and A-maze-ing Entryways”

Valvular Insufficiency

Take a look at the image below and see if you can spot the differences between these two IV giving sets:

Maybe the packaging will help?

How did you go? There are actually a few differences between them, but there is one in particular that I am interested in, and you should be too. Can you guess which one it is? Yes, that little white bit circled in red is what’s called a “one-way”, “back check” or just “check” valve. As the name suggests it ensures fluid in the line can only move one-way i.e. from the IV fluid bag and into the patient. This valve is there so that if you are running a secondary infusion it will flow into the patient, rather than back up the primary line and into the fluid bag. A visual representation of what this valve does can be seen in this video:

Continue reading “Valvular Insufficiency”