Two-part hipjoint socket for anchoring in the pelvic bone
AssigneesSulzer Medizinaltechnik AG, Allo Pro AG
InventorsRene Hauser, Yvan Sandoz
Life of this patent
Estimating the term…
Abstract
A hipjoint socket having a metal outer shell (1) which may be anchored in the pelvis. The shell (1) includes regions (3) of greater wall thickness (D) alternating in the circumferential direction with regions (4) of less wall thickness (d). The regions (3) of greater wall thickness (D) are made as guideshoes for supporting bodies (11) which may be slid onto them. The supporting bodies (11) are fixed to and, if necessary, positioned exactly on the aforesaid regions (3) with fixing members (13). A number of supporting bodies, (11) which may differ in shape and dimensions, are associated with each shell (1).
Claims14
A hipjoint socket for anchoring in the pelvic bone, comprising:
- at least one supporting body;
- a frustoconical shell made of metal and having a hollow inside, the shell also having regions of greater wall thickness alternating in a circumferential direction with regions of lesser wall thickness, the regions of lesser wall thickness having a cross-section in the form of sectors of a circular ring, the regions of greater wall thickness having a cross-section which is essentially trapezoidal and tapers conically towards a pole, the regions of greater wall thickness having guideshoes extending along the outer surface, the regions of greater wall thickness having means for fixing the supporting body to the shell;
- an insert having a cup of the socket, the insert being sized for a snug fit in the hollow inside;
- and
- the supporting body being adapted to engage at least one of said guideshoes, wherein the supporting body has a recess having a dovetail shape which engages the trapezoidal cross-section of the regions of greater wall thickness and may be slipped onto the guideshoes from the pole.
A hipjoint socket for anchoring in the pelvic bone, comprising:
- a frustoconical shell having a hollow inside, an outer surface, and regions of greater wall thickness alternating in a circumferential direction with regions of lesser wall thickness, the regions of greater wall thickness comprising guideshoes extending along the outer surface, the guideshoes having first and second lateral surfaces, the shell tapering conically towards a pole end;
- and
- at least one supporting body adapted to engage at least one guideshoe, the supporting body being positioned over at least a portion of the outer surface when the supporting body engages the at least one guideshoe, the supporting body being configured to slidably engage at least a part of the lateral surfaces of the guideshoes from the pole end of the shell.
A hipjoint socket for anchoring in the pelvic bone, comprising:
- at least one supporting body;
- a frustoconical shell made of metal and having a hollow inside, the shell also having regions of greater wall thickness alternating in a circumferential direction with regions of lesser wall thickness, the regions of lesser wall thickness having a cross-section in the form of sectors of a circular ring, the regions of greater wall thickness having a cross-section which is essentially trapezoidal and tapers conically towards a pole, the regions of greater wall thickness having guideshoes extending along the outer surface, the regions of greater wall thickness having means for fixing the supporting body to the shell, the fixing means comprising a setscrew having a conical centering tip and a hole extending completely through at least one of said regions of greater wall thickness, the supporting body being adapted to engage at least one of said guideshoes, the setscrew passing though the hole and engaging the supporting body, the setscrew configured to be tightened from the hollow inside;
- and
- an insert having a cup of the socket, the insert being sized for a snug fit into the hollow inside the shell.
A hipjoint socket for anchoring in the pelvic bone, comprising:
- at least one supporting body;
- a frustoconical shell made of metal and having a hollow inside, the shell also having regions of greater wall thickness alternating in a circumferential direction with regions of lesser wall thickness, the regions of lesser wall thickness having a cross-section in the form of sectors of a circular ring, the regions of greater wall thickness having a cross-section which is essentially trapezoidal and tapers conically towards a pole, the regions of greater wall thickness having guideshoes extending along the outer surface, the guideshoes having first and second lateral surfaces;
- an insert having a cup of the socket, the insert being sized for a snug fit in the hollow inside of said shell;
- and
- the supporting body being adapted to engage at least one of said guideshoes, the supporting body configured to engage at least a part of the outer and lateral surfaces.
Dependencies are inferred from the claim text.