Anti-ligature door fittings are designed to prevent people using them as a purchase for a ligature for self strangulation. For use in areas such as cells. Most hardware suppliers stock a range.
I noticed. I'm not seeing how that solves the ligature problem with ordinary hinges. The only way I'm seeing to ligature yourself is to pass the rope over the whole hinge, and back under it - something these do nothing to address.
No, it is enough to hang some fabric over the swivel part of the hinge, apparently.
All the prison cell doors I have seen (as an independent custody visitor!) open outwards. That means that the swivel part of the hinge is on the outside of the door, in the corridor, and not a ligature risk.
With a standard hinge, the "barrel" part of the hinge, which surrounds the hinge-pin and protudes into the room when the door is shut, is enough to hang a ligature on.
The local hospital had a case a while back where a patient managed to hang themselves using the lead from their earphones (such things are not banned for patients who are thought to be low-risk). IIRC he managed to hang himself by trapping the wire between door and frame at fairly low level and hanged himself in a sitting position.
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