Artificial wear resistant plug for mounting to existing joint bone

• US 9,050,193 B2
• Filed: 04/22/2014
• Issued: 06/09/2015
• 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): WATKINS, MARCIA LYNN
• Application Number:
  US14/258,544
• Publication Number:
  US 20140228962A1
• Time in Patent Office: 413 Days
• Field of Search: 623/18.11, 623/17.11, 623/17.14, 623/17.15, 623 1911- 1914, 623 2014- 2036, 623 2111- 2113, 623 2115- 2119, 623/23, 623/39, 623/23.4, 623/23.44
• US Class Current: 1/1
• 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 plasticized 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. A joint implant assembly, comprising:

a first component having a first supporting stem adapted to being mounted to a reconditioned end of a first joint defining bone and having an exposed portion exhibiting a first depth extending aperture;

a first cap attachment exhibiting a convex exterior surface, said first cap attachment having a first underside mating with said first exposed portion, a first screw portion extending from said first underside of said first cap attachment and engaging within said first depth extending aperture for mounting said first cap attachment to said first component; and

a second component having a second supporting stem adapted to being mounted to a reconditioned end of a second joint defining bone and having a second exposed portion exhibiting a second depth extending aperture;

a second cap attachment exhibiting a concave exterior surface, said second cap attachment having a second underside mating with said second exposed portion of said second component, a second screw portion extending from said underside of said second cap attachment and engaging within said second underside depth extending aperture for mounting said second cap attachment to said second component, said first and second cap attachments defining removeable and replaceable components for providing a reconditioned artificial wear surface; and

wherein at least one of said exposed portions further includes a plurality of discontinuous and interconnecting side and top surfaces for receiving and securing said mating underside of said respective first or second cap attachments; and

further comprising at least one stiffener insert incorporated into a plasticized construction associated with each of the convex and concave shaped cap attachments, wherein said stiffener inserts each have an arcuate profile and are incorporated into a perimeter formed by each of said interconnecting side and top surfaces defining each of said cap attachments.