Human bone substitutional implant

• US 20070270954A1
• Filed: 04/05/2006
• Published: 11/22/2007
• Est. Priority Date: 04/05/2006
• Status: Abandoned Application

• Current Assignee: Shing-Sheng Wu
• Original Assignee: Shing-Sheng Wu
• Inventors: Wu, Shing-Sheng
• Application Number:
  US11/397,695
• Publication Number:
  US 20070270954A1
• Time in Patent Office: Days
• US Class Current: 623/17.110
• CPC Class Codes: A61B 17/70 Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
• CPC Class Codes: A61B 17/8858 laterally or radially expansible inflatable A61B17/8855
• CPC Class Codes: A61F 2/44 for the spine, e.g. vertebrae, spinal discs
• CPC Class Codes: A61F 2002/30579 with mechanically expandable devices, e.g. fixation devices

Abstract

A human bone substitutional implant comprises a main body and a push body. The main body is a hollow cylinder with a thread portion or a ratchet portion disposed on its outer wall. The thread portion or the ratchet portion has at least a slit dividing it into four equal parts. An inner thread is disposed on the inner wall of the thread portion or the ratchet portion. An outer thread is disposed on the outer surface of the push body and corresponds to the inner thread. The push body and the main body are joined together via screw connection of the outer thread and the inner thread. Because the main body has a conical passage therein, the main body will be held open a certain angle to support and enhance a fractured bone of the human body when the push body is axially pushed into the main body.

Claims

1. A human bone substitutional implant comprising:

a main body having at least a slit, an inner thread being disposed on an inner wall of said main body; and

a push body with an outer thread formed on an outer surface thereof, said outer thread corresponding to said inner thread of said main body, said push body and said main body being joined together by means of screw connection of said outer thread and said inner thread.

2. The human bone substitutional implant as claimed in claim 1, wherein said main body is a hollow circular cylinder, a thread portion is disposed on an outer surface of said main body, and said slit divides said thread portion into four equal parts.

3. The human bone substitutional implant as claimed in claim 1, wherein said main body is a hollow square cylinder, a ratchet portion is disposed on an outer surface of said main body, and said slit divides said ratchet portion into four equal parts.

4. The human bone substitutional implant as claimed in claim 1, wherein said main body is a hollow cuboid, said slit divides said main body into two equal parts, and a ratchet portion is disposed on an outer surface of said main body.

5. The human bone substitutional implant as claimed in claim 1, wherein a fixing portion is formed on an end face of said main body, and said fixing portion is of a straight line shape, a cross shape, a square shape, a hexagon shape, or a circular shape.

6. The human bone substitutional implant as claimed in claim 5, wherein a groove is disposed on an end face of said push body, and said groove is of a square shape or a hexagon shape.

7. The human bone substitutional implant as claimed in claim 6, wherein a rod is extended from an end of said push body, one end of said rod has a cylinder, a conical passage is formed in said main body, and said main body is held open a certain angle when said cylinder is axially pushed into said conical passage.

8. The human bone substitutional implant as claimed in claim 7, wherein said cylinder is a circular or square cylinder, and said cylinder and said rod are integrally formed or a fixing component is used to join said cylinder and said rod together.

9. The human bone substitutional implant as claimed in claim 8, further comprising a connection subassembly, wherein said subassembly comprising a connection portion for fixing a connection rod and a transverse rod, said connection rod being fixed in said main body through a locking component.

10. The human bone substitutional implant as claimed in claim 6, wherein said push body is a cone having a certain cone angle.