Possible Clues:

• Window opener in hospital
• Weekly medical journal, with "The"
• Window that opens in theatre
• Designing clean technology initially for cutting-edge stuff in The Theatre?
• Awfully clean on top of table, surgeon's knife
• Narrow window for research publication
• Medical instrument
• Surgical knife with a pointed double-edged blade: pointed Gothic arch
• Source of light that's used for opening in theatre
• Operator's instrument in window