Systems and methods for using polyaxial plates
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61B-017/80
A61B-017/74
A61B-017/86
A61B-017/00
출원번호
US-0774721
(2013-02-22)
등록번호
US-8888824
(2014-11-18)
발명자
/ 주소
Austin, Gene Edward
Harmon, Jon A.
Petteys, Timothy J.
Russell, Thomas A.
Tornetta, Paul
Ricci, William M.
출원인 / 주소
Smith & Nephew, Inc.
대리인 / 주소
Fish & Richardson P.C.
인용정보
피인용 횟수 :
0인용 특허 :
201
초록▼
Certain embodiments of the invention provide plates for treating periarticular fractures or other non-full body weight bearing applications that combine polyaxial fixation with a low profile and enhanced contouring that more closely conforms to bone. Such plates can be designed to achieve buttressin
Certain embodiments of the invention provide plates for treating periarticular fractures or other non-full body weight bearing applications that combine polyaxial fixation with a low profile and enhanced contouring that more closely conforms to bone. Such plates can be designed to achieve buttressing effect and/or to be used in a reinforcement mode. Other features can be combined with these. Such plates can be created for use on bone sites such as on a tibia, fibula, metatarsal, calcaneous, other foot bone, humerus, radius, ulna, spinal, maxillofacial, as well as sites on other bones.
대표청구항▼
1. A bone fixation assembly for treating a fracture of a bone site, the assembly comprising: a bone plate having an interior surface configured to contact bone and an exterior surface, the bone plate comprising: a head portion configured to conform to a metaphysis of the bone, the head portion havin
1. A bone fixation assembly for treating a fracture of a bone site, the assembly comprising: a bone plate having an interior surface configured to contact bone and an exterior surface, the bone plate comprising: a head portion configured to conform to a metaphysis of the bone, the head portion having one or more polyaxial openings, anda shaft portion that extends from the head portion and that is generally elongated and configured to conform to a diaphysis of the bone, the shaft portion defining a first slot and having one or more polyaxial openings, the first slot having parallel side walls;wherein the one or more polyaxial openings each comprises an inner surface having a plurality of fins protruding from the inner surface. 2. The assembly of claim 1, wherein the head portion is approximately delta-shaped. 3. The assembly of claim 1, wherein the first slot is elongated along a length of the shaft. 4. The assembly of claim 1, wherein the head portion includes three or more polyaxial openings arranged along a direction substantially transverse to a length of the shaft. 5. The assembly of claim 1, further comprising one or more fasteners for engaging the one or more polyaxial openings, wherein the plurality of fins are deflectable relative to a head of the one or more fasteners when the one or more fasteners is inserted into the one or more polyaxial openings such that the one or more fasteners may be inserted and retained at any one of a plurality of angles relative to the one or more polyaxial openings. 6. The assembly of claim 5, wherein the plurality of fins comprise a concave upper surface portion. 7. The assembly of claim 1, wherein the exterior surface is convex. 8. The assembly of claim 1, wherein the interior surface is concave. 9. The assembly of claim 1, wherein the interior surface comprises one or more undercuts that traverse across the interior surface. 10. The assembly of claim 1, wherein the bone plate further comprises an edge comprising at least one scallop. 11. The assembly of claim 1, wherein the first slot is at least partially threaded, is non-threaded, or comprises an inner surface and a plurality of fins protruding from at least a portion of the inner surface. 12. The assembly of claim 1, wherein the first slot is configured to accept cortex, compression, osteopenic, or locking screws. 13. The assembly of claim 1, wherein the bone plate comprises a thickness of approximately 2 mm or less. 14. The assembly of claim 1, wherein the head portion defines a second slot, the second slot having parallel side walls. 15. The assembly of claim 14, wherein the second slot is elongated along a direction substantially perpendicular to a length of the shaft. 16. The assembly of claim 4, wherein a central axis of at least one of the three or more polyaxial openings in the head portion is oriented orthogonally relative to the interior or the exterior surface of the bone plate, and wherein a central axis of at least another one of the three or more polyaxial openings in the head portion is oriented non-orthogonally relative to the interior or the exterior surface of the bone plate. 17. The assembly of claim 1, wherein an axis of at least one of the one or more polyaxial openings in the shaft portion is oriented non-orthogonally relative to the interior surface of the bone plate. 18. The assembly of claim 1, wherein the plurality of fins protruding from the inner surface of each of the one or more polyaxial openings have bases that intersect the inner surface, the intersection between the bases and the inner surface defining a single plane. 19. A low profile bone plate having an interior surface configured to contact bone and having an exterior surface, the bone plate comprising: a head portion that is approximately delta-shaped, the head portion defining a plurality of polyaxial openings; anda shaft portion that extends from the head portion and that is generally elongated, the shaft portion defining a plurality of polyaxial openings along a length of the shaft and defining a first slot, the first slot having parallel side walls,wherein the one or more polyaxial openings each comprises an inner surface having a plurality of fins protruding from the inner surface and deflectable relative to a head of a fastener such that the fastener may be inserted and retained at any one of a plurality of angles relative to the one or more polyaxial openings, at least one of the one or more polyaxial openings comprising a concave upper surface portion. 20. The low profile bone plate of claim 19, wherein each of the one or more polyaxial openings includes five fins. 21. The low profile bone plate of claim 19, wherein at least one of the head portion or the shaft portion defines one or more provisional pin openings. 22. The low profile bone plate of claim 19, wherein the plurality of fins protruding from the inner surface of each of the one or more polyaxial openings have bases that intersect the inner surface, the intersection between the bases and the inner surface defining a single plane. 23. The low profile bone plate of claim 19, wherein the head portion includes three or more polyaxial openings arranged along a direction substantially transverse to the length of the shaft. 24. The low profile bone plate of claim 23, wherein a central axis of at least one of the three or more polyaxial openings in the head portion is oriented orthogonally relative to the interior or the exterior surface of the bone plate, and wherein a central axis of at least another one of the three or more polyaxial openings in the head portion is oriented non-orthogonally relative to the interior or the exterior surface of the bone plate.
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이 특허에 인용된 특허 (201)
Ralph James D. ; Tatar Steven, Acetabular cup having capped polyaxial locking screws.
Lowery Gary (Gainesville FL) Sherman Michael C. (Memphis TN) Ray ; III Eddie F. (Cordova TN) Coates Bradley J. (Cordova TN), Anterior cervical plating system.
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Errico Joseph P. (P.O. Box 3070 Garden City NY 11531) Errico Thomas J. (5 Crest Acre Ct. Summit NJ 07901) Ralph James (71 Manito Ave. Oakland NJ 07436), Anterior spinal polyaxial locking screw plate assembly.
Benzel Edward C. ; Yuan Hansen A. ; Dinello Alex ; Wefers Michael H. ; Smith Aaron C., Apparatus for retaining bone portions in a desired spatial relationship.
Dall Desmond Meiring (2470 Inverness Ave. Los Angeles CA 90033) Miles Anthony William (Tremont ; 14 Upper Oldfield Park Bath BA2 3JZ GBX) Schmotzer Hans Friedrich (Gartenstrasse 7 CH-6330 Cham CHX), Bone fixation system.
Magerl,Fritz; Tognini,Roger Roland; Wintermantel,Erich; Mayer,J��rg; Peter,Thomas Andreas; Spirig,Walter, Composite of polymer or ceramic materials and component made of such a composite.
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Errico Joseph P. (Hempstead NY) Errico Thomas J. (Summit NJ) Ralph James (Oakland NJ), Posterior spinal polyaxial locking lateral mass screw plate assembly.
Goble E. Marlowe (850 E. 1200 North Logan UT 84321) Somers W. Karl (651 N. 150 West Logan UT 84321) McGuire David (3418 Lakeside Dr. Achorage AK 99515), Process of endosteal fixation of a ligament.
Kazuo Kuroda JP, Recording medium having multiple recording layers and method and apparatus for recording and reproducing information on the recording medium.
Gogolewski Sylwester (Alvaneu-Dorf CHX) Perren Stephan M. (Davos CHX), Self-locking resorbable screws and plates for internal fixation of bone fractures and tendon-to-bone attachment.
Kilpela Thomas S. (Marquette MI) Iwanski George J. (Marquette MI) Songer Matthew N. (Marquette MI) Songer Robert J. (Northbrook IL), Surgical cable loop connector.
Kilpela Thomas S. (Marquette MI) Iwanski George J. (Marquette MI) Songer Matthew N. (Marquette MI) Songer Robert J. (Northbrook IL), Surgical cable screw connector.
Shetty H. Ravindranath (Warsaw) Heldreth Mark A. (Mentone) Parr Jack E. (North Webster IN), Titanium porous surface bonded to a cobalt-based alloy substrate in an orthopaedic implant device.
de la Caffiniere Jean-Yves (Paris FRX), Upper locking device for centromedullary pins used for osteosynthesis of fractures of the femur, tibia, and humerus.
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