I was looking for disposable razors for travel (I normally roll with Bic singles or Gillette guards).
I then came across Kai disposable blades which had an open comb. The seller tagged these as for “medical use”.
Took one for a maiden shave this morning and the experience was excellent (as far as light disposables go). The blade is sturdy and cuts really well. It left me with the feeling that the blade still has many more quality shaves left in it - but obviously I wouldn’t know yet.