Outer cup for an artificial hipjoint socket

• US 5,314,490 A
• Filed: 02/05/1993
• Issued: 05/24/1994
• Est. Priority Date: 04/03/1992
• Status: Expired due to Fees

• Current Assignee: Protek AG (Sulzer AG), Sulzer Medizinaltechnik AG
• Original Assignee: Protek AG (Sulzer AG), Sulzer Medizinaltechnik AG
• Inventors: Willi, Roland, Wagner, Heinz
• Primary Examiner(s): ISABELLA, DAVID J
• Application Number:
  US08/013,900
• Time in Patent Office: 473 Days
• Field of Search: 623/18, 623/22, 623/23, 606/72, 606/69, 606/71, 606/70
• US Class Current: 623/22.36
• CPC Class Codes: A61B 17/7098 wherein the implant is permeable or has openings, e.g. fenestrated screw hollow surgical screws A61B17/864
• CPC Class Codes: A61F 2/30724 Spacers for centering an implant in a bone cavity, e.g. in a cement-receiving cavity
• CPC Class Codes: A61F 2/34 Acetabular cups
• CPC Class Codes: A61F 2002/30449 the adhesive being cement
• CPC Class Codes: A61F 2002/30576 with extending fixation tabs
• CPC Class Codes: A61F 2002/30578 having apertures, e.g. for receiving fixation screws
• CPC Class Codes: A61F 2002/30787 inclined obliquely with respect to each other
• CPC Class Codes: A61F 2002/30841 Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes
• CPC Class Codes: A61F 2002/3401 with radial apertures, e.g. radial bores for receiving fixation screws
• CPC Class Codes: A61F 2002/3403 Polar aperture
• CPC Class Codes: A61F 2002/4631 the prosthesis being specially adapted for being cemented
• CPC Class Codes: A61F 2220/005 using adhesives
• CPC Class Codes: A61F 2310/00023 Titanium or titanium-based alloys, e.g. Ti-Ni alloys

Abstract

An artificial hip joint socket for fastening to a pelvic bone includes a metallic outer cup for an artificial hipjoint socket forming a concavity for receiving a hip. This cavity terminates at an equatorial edge. Supporting flaps for fastening to said pelvic bone are provided at the equatorial edge of the metallic outer cup. These supporting flaps define holes drilled for bone screws to pass through and as openings for checking the clearance from the bone. The supporting flaps are provided with preset lines of grooves for enabling preferential bending of said flaps along said at least one of said preset lines of grooves to conform said supporting flaps and metallic outer cup to said pelvis. In the preferred embodiment, the preset lines of grooves run exclusively in the region of the supporting flaps undisturbed by defined holes in the flap. The preset lines of grooves are arranged on the outer surface of the flaps toward the pelvis. Round depressions are preferably provided at the intersections between said preset lines of grooves.

Claims

1. An artificial hip joint socket for fastening to a pelvic bone comprising:

a metallic outer cup for an artificial hipjoint socket forming a concavity for receiving a hip, said concavity terminating at an equatorial edge;

supporting flaps for fastening to said pelvic bone provided at said equatorial edge of said metallic outer cup;

said supporting flaps defining holes drilled for bone screws to pass through and as openings for checking the clearance from the bone; and

,

said supporting flaps provided with preset lines of grooves for enabling preferential bending of said flaps along said at least one of said preset lines of grooves to conform said supporting flaps and metallic outer cup to said pelvis.

2. An artificial hip joint socket for fastening to a pelvic bone outer cup as in claim 1 including:

said lines of grooves run exclusively in region of the supporting flaps undisturbed by defined holes in said flap.

3. An artificial hip joint socket for fastening to a pelvic bone outer cup as in claim 1 including:

said preset lines of grooves are arranged on the outer surface of the flaps toward said pelvis.

4. An artificial hip joint socket for fastening to a pelvic bone outer cup as in claim 1 including:

at least one of said flaps defines preset lines of grooves which intersect; and

,

round depressions provided at the intersections between said preset lines of grooves.