| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Metal tube, device | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Insertion of metal device into subcutaneous tissue | Direct device | False | Metal device | Inferred relationship | Existential restriction modifier | 1 | 
| Insertion of metal device into subcutaneous tissue | Direct device | True | Metal device | Inferred relationship | Existential restriction modifier | 1 | 
| Metal nail | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Non-neurovascular embolization plug, metallic | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Uncoated unicondylar knee tibia prosthesis, metallic | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Titanium sapphire laser device | Is a | False | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Teeth in wax and metal framework | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Metal-on-metal total hip prosthesis | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Metallic spinal interbody fusion cage | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Metal stent | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Titanium cage | Is a | False | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Titanium dental bur | Is a | False | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Uncoated knee tibia prosthesis, metallic | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Orthodontic bracket, metal | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Metallic reverse shoulder prosthesis cup | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Metallic osteotomy fusion cage | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Metallic acetabulum prosthesis | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Metal ear, nose and throat bur | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Metal medicine container | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Metallic metatarsophalangeal joint prosthesis | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Fixative, metallic | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Hemodynamic-modulation vessel repair implant, intracranial/carotid, polymer-metal | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Metallic acetabular liner | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Ligation clip, metallic | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Denture clasp, metal, custom-made | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Metallic orthopedic cement restrictor | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Metallic femoral head prosthesis | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Metallic suture | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Orthodontic band, metal | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Orthodontic clasp, metal, custom-made | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Metal hook | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Metal framework | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Metal sound | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Dental bone matrix implant, metallic | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Metal dental bridge with polymer coating | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Dental crown, metal | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Metal mesh | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Metallic cloth | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Metallic spinal fusion cage, non-sterile | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Metal periosteal implant, device | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Orthodontic clasp, metal, preformed | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Ceramic-on-metal total hip prosthesis | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Denture clasp, metal, preformed | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| General-purpose caliper, metallic | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  | 
| Metal dental bridge with ceramic coating | Is a | True | Metal device | Inferred relationship | Existential restriction modifier |  |