clamp clip crocodile clamp gaze knife medical needle stich cutter surgery suture heart hospital love school students Doctor hammer physician reflex-hammer cut emergency health injury stitches blade blunt Dirt rust scalpel sharp silver sut tool chamber clinic gynecology interior medical equipment op operating room operating theatre operation or room treatment after-care arm cover covered pain-control post-operative protected protective rest resting resting-sling shoulder shoulder surgery after care sling support supporting supportive clambs desk hooks instruments knifes op strainer sterile surgical instruments table therapie tools