System and method for repairing articular surfaces

Patent metadata

Field	Value
Publication number	US-10624754-B2
Application number	US-201815973981-A
Country	US
Kind code	B2
Filing date	May 8, 2018
Priority date	Mar 7, 2014
Publication date	Apr 21, 2020
Grant date	Apr 21, 2020

Abstract

A total joint replacement system comprising a first and a second implant system. The first implant system includes a first implant having a first load bearing surface based on a first removed portion of an articular surface of a patient's first bone, and a first anchor having a first threaded region configured to be secured into the first bone, wherein the first anchor is configured to be secured to the first implant. The second implant system includes a second implant having a second load bearing surface based on a second removed portion of an articular surface of a patient's second bone, and a second anchor having a second threaded region configured to be secured into the second bone, wherein the second anchor is configured to be secured to the second implant.

First claim

What is claimed is:

1. A joint replacement system for repairing a first and a second articular surface corresponding to a first and a second oppositely arranged bone, respectively, said system comprising:
a first implant system comprising:
a first implant comprising:
a first implant body including a first load bearing surface having a contour defining a generally hemispherical ball; and
a support plate configured to be secured to said first implant body using a first tapered connection therebetween; and

a first anchor configured to be secured into said first bone, wherein said first anchor is configured to be secured to said first implant body using a second tapered connection therebetween.

2. The joint replacement system of claim 1 , further including a second implant system, said second implant system comprising:
a second implant including a second load bearing surface having a contour defining a socket configured to articulate against said first load bearing surface; and
a second anchor configured to be secured into said second bone, wherein said second anchor is configured to be removably secured to said second implant.

3. The joint replacement system of claim 2 , wherein said first tapered connection comprise a tapered cavity and a tapered protrusion configured to form said first tapered connection therebetween.

4. The joint replacement system of claim 3 , wherein second anchor of said second implant system includes a threaded region configured to be secured into said second bone.

5. The joint replacement system of claim 2 , wherein said first load bearing surface is configured to replace substantially the entire first articular surface.

6. The joint replacement system of claim 2 , wherein said first load bearing surface is configured to replace a portion of said first articular surface.

7. The joint replacement system of claim 2 , wherein said support plate further includes at least one aperture configured to receive a fastener configured to secure said support plate into said first bone.

8. The joint replacement system of claim 7 , further comprising said fastener.

9. The joint replacement system of claim 2 , wherein said first anchor includes a threaded region configured to be secured into said first bone.

10. A joint replacement system for repairing a first and a second articular surface corresponding to a first and a second oppositely arranged bone, respectively, said system comprising:
a first and a second implant system configured to be secured to said first and said second bone, respectively, said first and said second implant systems each comprising:
an implant having a load bearing surface, wherein said load bearing surface of said first and said second implant system are configured to directly articulate against each other; and
an anchor configured to be independently secured to said a respective one of said first or said second implants;
wherein said first implant system further includes a support plate including a first tapered surface configured to be secured to a first corresponding tapered surface of said implant of said first implant system to form a first tapered connection therebetween; and
wherein said anchor of said first implant system further includes a second tapered surface configured to be secured to a second corresponding tapered surface of said implant of said first implant system using to form a second tapered connection therebetween.

11. The joint replacement system of claim 10 , wherein said implant and said anchor of said second implant system include a first and a second fixation element, respectively.

12. The joint replacement system of claim 11 , wherein said first and said second fixation element of said of said second implant system are configured to form tapered connection therebetween.

13. The joint replacement system of claim 11 , wherein said first and said second fixation element of said of said second implant system are configured to form a snap-fit connection therebetween.

14. The joint replacement system of claim 13 , wherein said anchor of said of said second implant system defines an implant cavity configured to receive at least a portion of a bone facing surface of said implant of said of said first implant system.

15. The joint replacement system of claim 10 , wherein said load bearing surface of said of said second implant system has a contour defining a socket and wherein said load bearing surface of said first implant system has a contour defining a generally hemispherical ball configured to articulate, at least in part, in said socket.

16. The joint replacement system of claim 10 , wherein said support plate further includes at least one aperture configured to receive a fastener configured to secure said support plate into said first bone.

17. The joint replacement system of claim 16 , further comprising said fastener.

18. A joint replacement system for repairing a first and a second articular surface corresponding to a first and a second bone, respectively, said system comprising:
a first implant system comprising:
a first socket implant having a socket-shaped load bearing surface;
a first ball implant having a generally hemispherical ball-shaped load bearing surface;
a support plate; and
a first anchor configured to be secured into said first bone; and

a second implant system comprising:
a second socket implant having a socket-shaped load bearing surface configured to articulate against said generally hemispherical ball-shaped load bearing surface of said first ball implant;
a second ball implant having a generally hemispherical ball-shaped load bearing surface configured to articulate against said socket-shaped load bearing surface of said first socket implant; and
a second anchor configured to be secured into said second bone;

wherein said first anchor is configured to be secured to said first socket implant and said second anchor is configured to be secured to said second ball implant; and
wherein said first socket implant and said second ball implant are configured to be removed from said first and said second anchors, and said first anchor is configured to be subsequently secured to said support plate using a first tapered connection therebetween and said first ball implant is configured to be subsequently secured to support plate using a second tapered connection therebetween, and said second anchor is configured to be subsequently secured to said second socket implant.

19. The joint replacement system of claim 18 , wherein said support plate further includes at least one aperture configured to receive a fastener configured to secure said support plate into said first bone.

20. The joint replacement system of claim 19 , further comprising said fastener.

Assignees

• Arthrosurface Inc

Inventors

• Ek Steven W
• Ek Steven E
• Jawrani Nikhil T

Classifications

• A61B2017/044

  with a threaded shaft, e.g. screws · CPC title

• A61F2002/4627

  with linear motion along or rotating motion about the instrument axis or the implantation direction, e.g. telescopic, along a guiding rod, screwing inside the instrument · CPC title

• A61F2002/3085

  with a threaded, e.g. self-tapping, bone-engaging surface, e.g. external surface · CPC title

• A61F2/4637

  for connecting or disconnecting two parts of a prosthesis · CPC title

• A61F2002/30649

  Ball-and-socket joints · CPC title