Artificial wear resistant plug for mounting to existing joint bone

• US 8,702,801 B2
• Filed: 04/24/2009
• Issued: 04/22/2014
• Est. Priority Date: 02/25/2008
• Status: Expired due to Fees

• Current Assignee: Linares Medical Devices, LLC
• Original Assignee: Linares Medical Devices, LLC
• Inventors: Linares, Miguel A.
• Primary Examiner(s): Isabella, David
• Assistant Examiner(s): SCHILLINGER, ANN M
• Application Number:
  US12/919,242
• Publication Number:
  US 20110035012A1
• Time in Patent Office: 1,824 Days
• Field of Search: 623 1312- 1319, 623 2014- 2036
• US Class Current: 623/20.15
• CPC Class Codes: A61F 2/30756 Cartilage endoprostheses A61F2/3603 takes precedence
• CPC Class Codes: A61F 2/30965 Reinforcing the prosthesis by embedding particles or fibres during moulding or dipping
• CPC Class Codes: A61F 2/38 for elbows or knees
• CPC Class Codes: A61F 2/3854 with ball and socket joint
• CPC Class Codes: A61F 2/3872 Meniscus for implantation between the natural bone surfaces
• CPC Class Codes: A61F 2002/30069 elastomeric
• CPC Class Codes: A61F 2002/30281 wedge-shaped
• CPC Class Codes: A61F 2002/30405 made by screwing complementary threads machined on the parts themselves
• CPC Class Codes: A61F 2002/30433 using additional screws, bolts, dowels, rivets or washers e.g. connecting screws
• CPC Class Codes: A61F 2002/30448 using adhesives
• CPC Class Codes: A61F 2002/30604 modular
• CPC Class Codes: A61F 2002/30673 Lubricating means, e.g. synovial pocket
• CPC Class Codes: A61F 2002/30878 with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
• CPC Class Codes: A61F 2002/30886 externally-threaded
• CPC Class Codes: A61F 2002/3093 for promoting ingrowth of bone tissue
• CPC Class Codes: A61F 2002/30937 with cut-outs
• CPC Class Codes: A61F 2002/3895 unicompartimental
• CPC Class Codes: A61F 2220/0041 using additional screws, bolts, dowels or rivets, e.g. connecting screws
• CPC Class Codes: A61F 2220/005 using adhesives
• CPC Class Codes: A61F 2240/001 Designing or manufacturing processes

Abstract

An artificial and wear-resistant plug mounted to an existing bone associated with a joint structure and which includes a three dimensional and composite platicized material. An end surface of an existing bone is reconditioned in preparation for engagement of the plug thereto and in order to define a reconditioned artificial wear surface. In a preferred application, a pair end mounted plugs are arranged in opposing fashion between first and second bones and respectively define a male receiving end and a female socket. A lubricant retaining and cartilage defining exterior layer is applied to one or both of opposing surfaces of the plugs.

Claims

1. An artificial joint assembly adapted for installation to preconditioned ends of first and second bones, said joint assembly comprising:

a male composite implant adapted to be secured to a preconditioned end of the first bone, said male implant exhibiting a first joint defining surface;

a female composite implant adapted to be secured to a preconditioned end of the second bone, said female implant exhibiting a second joint defining surface;

a first stem securing to a rear side of the male implant and adapted to being anchored within an interior of the first bone extending inwardly from the first preconditioned end;

a second stem securing to a rear side of the female implant and adapted to being anchored within an interior of the second bone extending inwardly from the second preconditioned end;

each of said stems further having a shaped mounting end seating within a recess configured rear face defined in each of said male and female implants;

said recess configured rear faces of said male and female implants each futher having interconnecting and inwardly tapered side walls and end walls, said end walls futher having laterally inwardly projecting keyed portions projecting into a three dimensional interior defined by said side and end walls, said shaped mounting ends of said stems each exhibiting a mating profile for engaging to said recess configured rear faces such that said interconnecting side and end walls with inwardly projecting keyed portions collectively define a mating and inwardly recessed taper configuration with which is fixedly secured said stem mounting end; and

said recess configured rear faces of said implants each futher including a centrally supported and upwardly projecting anchor portion which is received within a mating recess aperture centrally defined in each of said shaped mounting ends of said stems, an open inserting end of said stems revealing an accessible interior exhibiting pluralities of surface area increasing and inwardly projecting keyed portions exhibited upon open inner surfaces of the said stem in communication with a hollowed bone interior, said keyed portions extending around an inner perimeter of said open interior surface of said stem in communication with an interior location of the bone and which are adapted to promoting an increase in natural bone growth and adhesion through contact with existing bone marrow.