Sorry, just saw the comments about models. They are cheap but only last a week or so. Gel mix is 100gm of gelatine first softened in 5 cups of very hot water- try to disperse slowly and evenly in water as it gets lumpy, then add 5 cups cold water. As it cools add 1or 2 tablespoon of metamucil ( or other psyllium product)...I often speed cool in fridge briefly. You have to re-stir the psyllium in just before it cools too much, or else it layers out. I am told if you add chlorhexidine it is less prone to going mouldly after a week. The Veins are long modelling balloons filled with water and knotted in segments so that each 'vein' can be punctured in several places. The balloons float to surface so you either tip shape out of mould and puncture from 'bottom' or (particulalry if you are in hot environment ) set the balloons on base of model with thin layer of gel - set extra quickly in freezer then pour rest of semi-cooled mix over top. By leaving the models in the lunch boxes, they are less messy and easier to transport and clean up. Note that due to legal issues, you should always put a layer of thin plastic lunch wrap over model (excluding bubbles) as some US companies will not warranty their probes if they have touched animal protein. Store in fridge until ready to use. I will try and do a short video on making models bu there is good stuff already on internet.
We use in plane for everything in radiology, for any sort of biopsies we do. It is tricky to learn, though. And in my department we don’t really do any vascular access.
