IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0260729
(2005-10-27)
|
등록번호 |
US-8372154
(2013-02-12)
|
발명자
/ 주소 |
- Schultz, Jason M
- Palmer, Andrew K
- Stone, Kevin T
- Graham, Thomas J
- Berelsman, Brian K
- Strickland, James W
|
출원인 / 주소 |
- Biomet Manufacturing Corp.
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
49 |
초록
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A prosthetic wrist having at least one of a radial insert, which is configured to be fixed to a radius of a patient, a carpal implant or a wrist bearing component. The carpal implant can include a body and a pair of flanges, each of which being skewed to the axis of the body in a manner that permits
A prosthetic wrist having at least one of a radial insert, which is configured to be fixed to a radius of a patient, a carpal implant or a wrist bearing component. The carpal implant can include a body and a pair of flanges, each of which being skewed to the axis of the body in a manner that permits them to abut the ulnar side of the hamate bone and the radial side of the distal portion of the carpal bone complex, respectively. The radial insert may be provided with a plurality of modular portions to allow for selection and customization of an implant. Also the various portions can allow for a hemi- or total, or revision wrist arthroplasty. The modular portions can allow for intraopertative customization.
대표청구항
▼
1. A modular prosthesis for placement in a wrist relative to a radius and a carpal bone, comprising: a carpal bearing component including: a wrist bearing component;a carpal implant extending between a carpal complex engaging side and a proximal side, said carpal implant having an integral scaphoid
1. A modular prosthesis for placement in a wrist relative to a radius and a carpal bone, comprising: a carpal bearing component including: a wrist bearing component;a carpal implant extending between a carpal complex engaging side and a proximal side, said carpal implant having an integral scaphoid replacement section having a greater thickness relative to a remainder of said carpal implant, said integral scaphoid replacement section configured to interface with a trapezoid and a trapezium;a modular distal radial assembly including: a stem member operable to be positioned relative to a portion of the radius;a distal radial bone replacement member operable to be interconnected with said stem member during an operative procedure;an interconnection device provided on each of the stem member and the distal radial bone replacement member that is operable to fasten the stem member to the distal radial bone replacement member; andan articulation member connected to the distal radial bone replacement member and operable to articulate with the carpal implant to substantially mimic a natural articulation of the wrist, the articulation member includes an articulating region that includes at least one of a prosthesis articulating region and a bony portion articulating region, the articulating region includes a containing portion including a wall operable to surround the wrist bearing component;wherein said stem member and said distal radial bone replacement member are provided to be interconnected to substantially form a portion of a radial articulation with the carpal bearing component. 2. The modular prosthesis of claim 1, wherein said articulation member includes a portion formed of a polymer material, carbon, metal, or combinations thereof. 3. The modular prosthesis of claim 1, wherein said articulation member is selectively interconnected to said distal radial bone replacement member. 4. The modular prosthesis of claim 1, wherein said stem member defines a body portion operable to be held relative to the radius and a stem connecting portion extending from said body portion. 5. The modular prosthesis of claim 1, wherein said distal radial bone replacement member includes a plurality of said distal radial bone replacement members each including a substantially unique dimension; wherein said dimension is selected from at least one of a height, a width, a depth, a height of articulation, a flat portion, a carpal containing section, or combinations thereof. 6. The modular prosthesis of claim 5, wherein each of said plurality of said distal radial bone replacement members includes a height dimension extending between a first portion of the distal radial bone replacement member operable to interconnect with said stem and a second portion of said distal radial bone replacement member near the carpal complex. 7. The modular prosthesis of claim 1, wherein said stem member includes a plurality of stems each including a unique feature selected from at least one of a length, a width, a diameter, a configuration, or combinations thereof. 8. The modular prosthesis of claim 1, wherein said distal radial bone replacement member defines an articulating surface operable to articulate with the carpal bone. 9. The modular prosthesis of claim 1, further comprising: an ulna articulation region is defined by said articulation member;wherein said ulna articulation region is operable to articulate with an ulna. 10. The modular prosthesis of claim 1, wherein the articulation member includes a first lip at a first end of the articulation member, the first lip extends beyond a first edge of the distal radial bone replacement member; and wherein the articulation member includes a second lip at a second end of the articulation member that is opposite to the first end, the second lip extends beyond a second edge of the distal radial bone replacement member that is opposite to the first edge. 11. The modular prosthesis of claim 10, wherein at least one of the first lip and the second lip include a planar undersurface that extends in a plane parallel to a base of the distal radial bone replacement member, the interconnection device extends through the base. 12. The modular prosthesis of claim 1, wherein the distal radial bone replacement member includes at least one depression therein to facilitate fixation at the radius. 13. The modular prosthesis of claim 1, further comprising a locking member operable to secure the articulation member to the distal radial bone replacement member. 14. The modular prosthesis of claim 13, wherein the locking member includes a screw that is positioned parallel to a base of, and transverse to a longitudinal axis of, the distal radial bone replacement member. 15. The modular prosthesis of claim 14, wherein the locking member cooperates with an articulating connection region extending from the distal radial bone replacement member and a depression area within the articulation member. 16. The modular prosthesis of claim 1, wherein said carpal implant is unsymmetrical between said carpal complex engaging side and said proximal side, said carpal implant defining a screw fixation bore, a post bore and a screw fixation bore all extending along non-parallel axes. 17. The modular prosthesis of claim 16, wherein said screw fixation bore is defined through said integral scaphoid replacement section. 18. The modular prosthesis of claim 16, wherein said carpal implant further includes a first section, a second section, and a third section, wherein said second and third sections are positioned between said first and integral scaphoid replacement sections, wherein said carpal complex engaging side is concave at said third section and convex at said integral scaphoid replacement section. 19. A modular prosthesis for placement in a wrist relative to a radius and a carpal bone, comprising: a modular distal radial assembly prosthesis including: a stem member operable to be positioned within a portion of the radius, the stem member including a first coupling surface;a distal radial bone replacement segment including a second coupling surface that is operable to interconnect with the first coupling surface to couple the stem member to the distal radial bone replacement segment during an operative procedure to form a portion of a radial articulation with the carpal bone or said carpal prosthesis member;an articulation member; anda carpal prosthesis member operable to be interconnected with a portion of the wrist to articulate with said articulation member, said carpal prosthesis member having an unsymmetric profile extending between a proximal side and a carpal complex engaging side, said carpal prosthesis member further comprising a first section, a second section, a third section and a fourth section all extending between said proximal side and said carpal complex engaging side, wherein said second and third sections collectively form a body that is positioned between said first and fourth sections, said fourth section having an integral scaphoid replacement section, said scaphoid replacement section being thicker between said proximal and carpal complex engaging sides than each of said first, second and third sections and having a first surface configured to interface with a trapezoid, said scaphoid replacement section including a thickness between said proximal side and said carpal complex engaging side at least twice that of a corresponding thickness measured at said second section. 20. The modular prosthesis of claim 19, wherein said articulation member is operable to be positioned between said carpal prosthesis member and said distal radial bone replacement segment. 21. The modular prosthesis of claim 19, wherein said distal radial bone replacement segment and said articulation member are formed as a single member and are operable to be interconnected with said stem member. 22. The modular prosthesis of claim 19, wherein said stem member, said distal radial bone replacement segment, and said articulation member are formed as a single piece for positioning relative to the radius. 23. The modular prosthesis of claim 19, wherein said distal radial assembly includes a plurality of said distal radial assemblies wherein each of said distal radial assemblies includes a substantially unique distal radial bone replacement segment for selection by a user. 24. The modular prosthesis of claim 23, wherein at least one of said plurality of said distal radial bone replacement segments is operable to be interconnected with said stem member to form said distal radial assembly for implantation. 25. The modular prosthesis of claim 24, wherein said carpal implant includes a plurality of carpal implants each including a selected dimension. 26. The modular prosthesis of claim 19, wherein said articulation member includes a carpal bone surrounding portion; wherein said carpal bone surrounding portion may surround the carpal bone relative to the distal radial bone replacement segment for substantially mimicking a natural articulation. 27. The modular prosthesis of claim 19, wherein said carpal prosthesis member includes: said body, an ulnar flange, and a radial flange;wherein said body is arranged relative to an axis that is adapted to extend generally parallel to an axis of a capitate bone in the wrist when implanted;wherein the ulnar flange extends from said body;wherein the radial flange extends from said body;wherein said ulnar flange and said radial flange cooperate to provide a bone abutment surface having a generally concaved shape configured to abut an ulnar side and a radial side respectively of the wrist. 28. The modular prosthesis of claim 19, wherein said carpal prosthesis member includes a first flange and a second flange extending from a center portion; wherein at least one of said first flange and said second flange include an augment to replace at least one of a bony portion in a carpal complex of the wrist. 29. The modular prosthesis of claim 19, wherein said articulation member defines an ulnar articulating surface. 30. The modular prosthesis of claim 19, wherein the articulation member includes a first lip at a first end of the articulation member, the first lip extends beyond a first edge of the distal radial bone replacement segment; wherein the articulation member includes a second lip at a second end of the articulation member that is opposite to the first end, the second lip extends beyond a second edge of the distal radial bone replacement segment that is opposite to the first edge; andwherein at least one of the first lip and the second lip include a planar undersurface that extends in a plane parallel to a base of the body, the second coupling surface extends through the base. 31. The modular prosthesis of claim 19, further comprising a locking member including a screw that is operable to secure the articulation member to the distal bone replacement segment; and wherein the locking member cooperates with an articulating connection region extending from the distal radial bone replacement segment and a depression area within the articulation member. 32. The modular prosthesis of claim 19, wherein the carpal prosthesis member includes a concave carpal complex engaging side including the scaphoid replacement positioned to replace a scaphoid bone when implanted in the wrist and a convex articulating side operable to articulate with the articulation member. 33. The modular prosthesis of claim 19 wherein said carpal complex engaging side is concave at said third section and convex at said integral scaphoid replacement section.
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