As the internet’s home of deeper, longer-form and more educational content, YouTube generally represents the better advertising option for medtech businesses, and indeed any business in a highly specialised and complex field (keeping in mind YouTube still only gives an advertiser 5-15 seconds to grab the audience’s attention).
In comparison, Instagram Reels can be a bit limiting, and may not be where your target audience resides. LinkedIn video advertising is a good option for B2B businesses, as it is home to a more relevant audience.