Calverline Hip Hinge

Metal injection moulding used in hip surgery recovery

Calverline
Hip Hinge

Brief: To develop a new ergonomic hip hinge to control movement following hip replacement surgery. The key feature of the device would be to replicate the real rotational movement of a hip joint when walking and sitting down. The movement control needed to prevent over stressing the wound site whilst still allowing the patient to stand and walk in a short time after surgery.

Process: IDC undertook extensive ergonomic, mechanical and materials research. This lead to the development of a combined hinge and rotational device using a swivel link arm component. The main structural components of the device are stainless steel investment castings.

The link arm swivel joints allow for adjustment during recovery and utilise stainless steel metal injection moulding technology providing a practical, cost effective route to small stainless steel parts. IDC designed and detailed all components including injection moulded ABS covers and Tuflex trims. The combined materials provide a compact strong lightweight device with a pleasing aesthetic and complying with all relevant standards

Achievement: IDC created a world leading support device for hip replacements. Ergonomic, attractive and compact, providing patients with essential post operation support and movement control.