| 摘要 |
A method for manufacturing a prosthetic hip acetabulum includes the following steps. First, one provides an insertion cup (1) having an inner concave receiving surface (3) having an opening surface (5) contained in an opening plane (P), and having an outer annular receiving structure (6). Next, one provides an installation and positioning insert (7) having a peripheral annular attachment structure (10) shaped to engage with the receiving surface (9) of the structure (6), fitting around that structure. Next, one heats the insert (7) in order to increase its size. Next, one fits the attachment structure (10) around the receiving surface (9) of the receiving structure (6). Finally, one cools the insert (7) to room temperature to reduce its size and achieve radial tightening of the attachment structure (10) on the outer annular receiving structure (6). |
| 主权项 |
1. Method for manufacturing a prosthetic hip acetabulum, comprising the steps of:
a) providing an insertion cup (1) having a concave inner receiving face (3) with an opening face (5) contained in an opening place (P), having a convex outer anchoring surface (2) intended to come into contact with a bone of an acetabulum of a patient, and having an outer annular receiving structure (6), b) providing an installation and orientation insert (7), having an assembly structure (8) on which an impactor can be removably fixed, and having a peripheral annular fixing structure (10) designed to cooperate with a receiving face (9) of the outer annular receiving structure (6) by engaging externally around the outer annular receiving structure (6), wherein the peripheral annular fixing structure (10) has an outer diameter which is not greater than an outer diameter of a substantially hemispherical surface (S1) defined by the insertion cup (1), wherein the peripheral annular fixing structure (10) has a C-shaped cross-section which defines a connecting face (11) which is directed radially inwardly, and wherein the receiving face (9) of the outer annular receiving structure (6) is directed radially outwardly, c) heating the installation and orientation insert (7) in order to increase the dimensions thereof, d) engaging the peripheral annular fixing structure (10), externally around the receiving face (9) of the outer annular receiving structure (6), with the installation and orientation insert (7) not extending beyond the convex outer anchoring surface (2), e) bringing the installation and orientation insert (7) back to room temperature in order to reduce the dimensions thereof, so as to achieve a radial clamping of the peripheral annular fixing structure (10) on the outer annular receiving structure (6), wherein the outer annular receiving structure (6) comprises a continuous or interrupted peripheral radial shoulder (d) of an annular edge (4), and the receiving face (9) of the outer annular receiving structure (6) has a locking groove. |
