Artificial hip joint without a shaft

• US 20060217720A1
• Filed: 03/15/2004
• Published: 09/28/2006
• Est. Priority Date: 03/13/2003
• Status: Abandoned Application

• Current Assignee: Poonung Chieng
• Original Assignee: Poonung Chieng
• Inventors: Chieng, Poonung
• Application Number:
  US10/549,255
• Publication Number:
  US 20060217720A1
• Time in Patent Office: Days
• US Class Current: 606/65
• CPC Class Codes: A61B 17/86 Pins or screws or threaded wires; nuts therefor A61B17/72 take precedence
• CPC Class Codes: A61B 2090/08021 of the patient or his organs
• CPC Class Codes: A61F 2/32 for the hip
• CPC Class Codes: A61F 2/3601 for replacing only the epiphyseal or metaphyseal parts of the femur, e.g. endoprosthetic femoral heads or necks directly fixed to the natural femur by internal fixation devices non-prosthetic internal fixation devices for the femoral head or neck A61B17/74
• CPC Class Codes: A61F 2002/30574 with an integral complete or partial collar or flange
• CPC Class Codes: A61F 2002/30787 inclined obliquely with respect to each other
• CPC Class Codes: A61F 2002/3401 with radial apertures, e.g. radial bores for receiving fixation screws
• CPC Class Codes: A61F 2002/3611 Heads or epiphyseal parts of femur
• CPC Class Codes: A61F 2002/3625 Necks
• CPC Class Codes: A61F 2002/365 Connections of heads to necks

Abstract

The invention provides an artificial hip joint without a shaft which includes an enhancing bone plate for supporting the femur, the plate having more than one hole on its surface, fixing elements for fixing the plate on the surface of the femur extending through these holes respectively; an enhancing bone screw which is expended through the plate and the femur; a center bone screw which is screwed with the enhancing bone screw; the other end of the center bone screw extending out of the femur neck; and a femur neck protecting device for protecting the femur neck, the device being fixed on the end which is not connected with the enhancing bone screw. With the fixation of the center bone screw, the protecting device can ride against the surface of the femur tightly so that it can protect the remaining bone cutting off the diseased or damaged. It can also enhance the rigidity and stabilization of the bone which is not well in function by the support of the enhancing bone plate.

Claims

1. An artificial hip joint without a shaft, comprising:

an enhancing bone plate, for supporting a femur, and said enhancing bone plate including more than one hole for passing a fixing element capable of fixing said enhancing bone plate onto the surface of said femur;

an enhancing bone screw, for passing through said enhancing bone plate and into said femur;

a center bone screw, being screwed with said enhancing bone screw, and another end of said center bone screw being exposed from a femur neck; and

a femur neck protecting device, being coupled to another end that said center bone screw is not coupled with said enhancing bone screw, for protecting said femur neck.

2. The artificial hip joint without a shaft of claim 1, wherein said fixing element is a screw.

3. The artificial hip joint without a shaft of claim 1, wherein said femur neck protecting device comprises a hollow sleeve, and said hollow sleeve includes an externally extended and slightly curved flange disposed at an end of the periphery of said hollow sleeve and an inwardly withdrawn neck section protruded from another end of said hollow sleeve, such that said neck section is coupled precisely to said center bone screw, and said sleeve includes at least one hole disposed at said flange.