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AssigneeAston Medical
InventorsPierre Trouilloud, Martin Gonzalvez, Christophe Alepee
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The jig includes bearing portions capable of engaging, only on the anatomical bone structure of the patient, with the front and rear edges of the socket, said portions having temporary positioning and attaching arrangements defining contact surfaces engaging with said front and rear edges, and said portions being formed from an area for connecting with a gripping sleeve arranged to act as a bore guide, wherein the positioning and orientation of the sleeve are predetermined relative to a three-dimensional coordinate system specific to the scapula and resulting from a peroperative plan translated via a bore axis defined by a vector and an origin that is the center of the socket, wherein both the vector and the origin give said orientation to the customized placement jig.
A jig for placing a shoulder prosthesis on a glenoid cavity, comprising bearing portions capable of engaging on the patient's anatomical bone structure with the front and rear rims of the glenoid cavity only, said portions having temporary positioning and attachment arrangements defining contact surfaces engaging with said rear and front rims, said portions being formed from an area of connection to a gripping handle arranged to act as a bore guide, the positioning and orientation of the handle are determined relative to a three-dimensional coordinate system specific to the scapular bone resulting from a peroperative plan which translates as a bore axis defined by a vector and an origin, the center of the glenoid cavity, which provide said orientation to the customized placement jig.
Dependencies are inferred from the claim text.