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1. (WO2012030712) POLYAXIAL PEDICLE SCREW
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2012/030712 International Application No.: PCT/US2011/049533
Publication Date: 08.03.2012 International Filing Date: 29.08.2011
IPC:
A61B 17/70 (2006.01)
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
B
DIAGNOSIS; SURGERY; IDENTIFICATION
17
Surgical instruments, devices or methods, e.g. tourniquets
56
Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
58
for osteosynthesis, e.g. bone plates, screws or the like
68
Internal fixation devices
70
Spinal positioners or stabilisers
Applicants:
HESTAD, Hugh D. [US/US]; US (UsOnly)
SHLUZAS, Alan E. [US/US]; US (UsOnly)
ZIMMER SPINE, INC. [US/US]; 7375 Bush Lake Road Minneapolis, Minnesota 55439, US (AllExceptUS)
Inventors:
HESTAD, Hugh D.; US
SHLUZAS, Alan E.; US
Agent:
BURGMAIER, Jason W.; Seager Tufte & Wickhem, LLC 1221 Nicollet Avenue, Suite 800 Minneapolis, Minnesota 55403, US
Priority Data:
61/378,18230.08.2010US
Title (EN) POLYAXIAL PEDICLE SCREW
(FR) VIS PÉDICULAIRE POLYAXIALE
Abstract:
(EN) A polyaxial bone anchor (10) including a housing (12), a bone screw (14), and a retainer (42) for pivotably coupling the head (18) of the bone screw to the housing. The retainer is positioned into the bore of the housing and includes a plurality of alternating tabs (46) and slots (48) circumferentially arranged to define a cavity for receiving the head portion of the bone screw therein. The retainer is axially moveable in the housing from a first position in which the head portion is not passable through the lower opening of the retainer to a second position in which the head portion is passable through the lower opening of the retainer.
(FR) La présente invention concerne un dispositif d'ancrage osseux polyaxial (10) comportant un logement (12), une vis pour os (14) et un élément de retenue (42) servant à raccorder pivotante la tête (18) de la vis pour os au logement. L'élément de retenue est disposé à l'intérieur du logement et comprend une pluralité de languettes (46) et de fentes (48) alternées disposées de façon circonférentielle pour délimiter une cavité destinée à accueillir la partie correspondant à la tête de la vis pour os. L'élément de retenue est axialement mobile dans le logement entre une première position dans laquelle la tête de la vis ne peut pas passer à travers l'ouverture inférieure de l'élément de retenue et une seconde position dans laquelle la tête de la vis peut passer à travers l'ouverture inférieure de l'élément de retenue.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, QA, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)