[특허]Bone anchor closure flange form guide and advancement structure with controlled splay

Bone anchor closure flange form guide and advancement structure with controlled splay 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A61B-017/70
출원번호	US-0852866 (2017-12-22)
등록번호	US-10206716 (2019-02-19)
발명자 / 주소	Jackson, Roger P. Surber, James L.
출원인 / 주소	Jackson, Roger P.
대리인 / 주소	Polsinelli PC
인용정보	피인용 횟수 : 0 인용 특허 : 38

초록

Open implant closure structures include a helically wound guide and advancement flange form having pivot-splay accommodating and splay control surfaces with opposing load flanks in initial non-parallel relation.

대표청구항 ▼

1. A spinal fixation assembly comprising: a closure having a body;a closure flange form extending helically about a central axis of the body of the closure;a receiver having a first upright arm and a second upright arm;a channel formed between the first upright arm and the second upright arm;a receiver flange form extending discontinuously along inner surfaces of the first upright arm and the second upright arm of the receiver;a closure splay control ramp included in the closure flange form; anda receiver splay control ramp included in the receiver flange form and configured to engage the closure splay control ramp, engagement of the closure flange form and the receiver flange form generating a controlled splay during a rotational mating of the closure within the receiver, the controlled splay generating an outward splay of the first upright arm and the second upright arm and reducing torque of the closure during loading of the closure into the receiver, the controlled splay arresting the outward splay of the first upright arm and the second upright arm when the closure is in a locking engagement with the receiver. 2. The spinal fixation assembly of claim 1, wherein the outward splay includes an outward pivot of the first upright arm and the second upright arm. 3. The spinal fixation assembly of claim 1, wherein the receiver flange form includes a receiver load flank and the closure flange form includes a closure load flank. 4. The spinal fixation assembly of claim 3, wherein the receiver load flank is in full contact with the closure load flank upon the locking engagement of the closure with the receiver. 5. The spinal fixation assembly of claim 3, wherein the receiver load flank has an undercut relative to the inner surfaces of the first upright arm and the second upright arm. 6. The spinal fixation assembly of claim 5, wherein the undercut provides an initial contact between the receiver load flank and the closure load flank during the rotational mating of the closure within the receiver. 7. The spinal fixation assembly of claim 3, wherein the receiver load flank is spaced relative to a stab flank. 8. The spinal fixation assembly of claim 3, wherein the closure load flank is spaced relative to a stab flank. 9. The spinal fixation assembly of claim 1, wherein the closure flange form includes a crest surface running relative to a root surface. 10. A spinal fixation assembly comprising: a closure having a body;a closure flange form extending helically about a central axis of the body of the closure;a receiver having a first upright arm and a second upright arm;a channel formed between the first upright arm and the second upright arm;a receiver flange form extending discontinuously along inner surfaces of the first upright arm and the second upright arm of the receiver;a closure splay control ramp included in the closure flange form; anda receiver splay control ramp included in the receiver flange form and configured to engage the closure splay control ramp, a spacing between the closure splay control ramp and the receiver splay control ramp generating a controlled splay allowance during a rotational mating of the closure within the receiver, the controlled splay allowance generating an outward splay of the first upright arm and the second upright arm, reducing torque, and increasing thrust of the closure during loading of the closure into the receiver, the controlled splay allowance arresting the outward splay of the first upright arm and the second upright arm when a locking thrust is generated within the receiver.

이 특허에 인용된 특허 (38)

Huene Donald R., Absorbable bone screw and tool for its insertion.
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Biedermann Lutz (Am Schafersteig 8 D-78048 VS-Villingen DEX) Harms Jurgen (D-Maximilianstr. 5 D-76133 Karlsruhe DEX), Anchoring member.
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Jackson, Roger P.; Surber, James L., Bone anchor closure pivot-splay control flange form guide and advancement structure.
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Jackson, Roger P; Surber, James L, Bone anchor closure pivot-splay control flange form guide and advancement structure.
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Schumacher, Joerg, Bone screw and osteosynthesis device.
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Dreyer Lino,FRX ; Jauslin Richard,CHX, Bottle finish and closure cap with double screw thread.
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DeLange Richard W. (Kingwood TX) Evans Merle E. (Spring TX) Anderson Donna S. (Houston TX), Buttress thread form.
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Jackson, Roger P., Closure for open-headed medical implant.
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Schlapfer Fridolin,CHX, Device for connecting a longitudinal support to a pedicle screw.
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Biedermann, Lutz; Harms, Jürgen, Element with a shank and a holding element connected to it for connecting to a rod.
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Jackson, Roger P, Helical guide and advancement flange with break-off extensions.
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Bailey A. Gregory (Alabaster AL) Folsom ; Jr. A. C. (Pelham AL), Implant connector.
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Biedermann, Lutz; Matthis, Wilfried, Locking assembly for securing a rod member in a receiver part for use in spinal or trauma surgery, bone anchoring device with such a locking assembly and tool therefor.
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Jackson,Roger P., Medical implant fastener with nested set screw and method.
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Bagby George, Method and apparatus for conjoining bone bodies.
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Sherman Michael C. ; Drewry Troy, Multi-axial bone screw assembly.
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Jackson, Roger P.; Surber, James L., Multi-start closures for open implants.
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Jackson, Roger P; Surber, James L, Multi-start closures for open implants.
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Bailey A. Gregory (Alabaster AL) Folsom ; Jr. Aubrey C. (Pelham AL), Negative load flank implant connector.
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Jackson, Roger P., Nested closure plug and set screw with break-off heads.
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Huebner Randall J. (18560 SW. Hart Aloha OR 97007), Orthopedic fixation screw and method.
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Khalili, Farid Bruce, Orthopedic rod system.
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Kaufman, Kevin; Gottlieb, Jamie; Won, Douglas; Rimlawi, Michael, Poly-axial pedicle screw implements and lock screw therefor.
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Biedermann, Lutz; Matthis, Wilfried, Polyaxial bone anchoring device.
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Jackson, Roger P., Polyaxial bone screw with shank articulation pressure insert and method.
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Schlapfer Johannes F.,CHX ; Hess Martin,CHX ; Schelker Rene,CHX ; Hagmann Ralf,CHX, Posterior spinal implant.
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Morrison Matthew M. ; Squires Craig ; Barker B. Thomas, Reverse angle thread for preventing splaying in medical devices.
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Nilsson, C. Michael; Stahurski, Terrance M.; Thramann, Jeffrey; Fulton, Michael, Screw and rod fixation system.
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Sage, Shahn S.; Walch, Tom; Richardson, Andrew; Jagger, Erik, Set screw apparatus.
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Crozet, Yves; Martin, Gregory, Slotted head pedicle screw assembly.
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Wagner Erik J. (Allen TX), Spinal fixation system and methods.
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Melkent, Anthony J.; Branch, Jr., Charles L.; Blackwell, Jonathan, Spinal implants and methods with extended multi-axial anchor assemblies.
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Landry,Michael E.; Khoo,Larry T.; Wagner,Erik J.; Forton,Charles R.; Jones,Robert J., Spinal stabilization systems and methods.
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Church Kris L., Thread form with multifacited flanks.
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Thierry Noel FR; Emmanuel Varenne FR, Threaded connection of two metal tubes with high tightening torque.
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Blose Thomas L. (Houston TX), Tubular connection having a parallel chevron thread.
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Cotrel Yves P. C. (Paris FRX), Vertebral implant for osteosynthesis device.
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Jackson,Roger P., closure for rod receiving orthopedic implant having a pair of spaced apertures for removal.
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Bone anchor closure flange form guide and advancement structure with controlled splay 원문보기

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Bone anchor closure flange form guide and advancement structure with controlled splay 원문보기

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