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1. (WO2018087692) ARTIFICIAL INTERVERTEBRAL DISC
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Pub. No.: WO/2018/087692 International Application No.: PCT/IB2017/057011
Publication Date: 17.05.2018 International Filing Date: 09.11.2017
Chapter 2 Demand Filed: 07.09.2018
IPC:
A61F 2/30 (2006.01) ,A61F 2/44 (2006.01)
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
F
FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
2
Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
02
Prostheses implantable into the body
30
Joints
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
F
FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
2
Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
02
Prostheses implantable into the body
30
Joints
44
for the spine, e.g. vertebrae, spinal discs
Applicants: EXPONENTIAL MEDICAL TECHNOLOGIES (PROPRIETARY) LIMITED[ZA/ZA]; Southern Implants Office Park, 1 Albert Road, Irene 0157 Centurion, ZA
Inventors: PARKER, Christopher Daniel; ZA
ROGINSKY, Andrew; ZA
Agent: SPOOR & FISHER; 11 Byls Bridge Boulevard Building No. 14 Highveld Ext 73 0157 Centurion, ZA
BROWN, Keith Edwin Frank; ZA
MOUBRAY, Hugh Robert; ZA
GILSON, David Grant; ZA
KEMP, Mark; ZA
WHITTAKER, Jonathan Denis; ZA
COCHRANE, David Hylton; ZA
ABRAMSON, Lance; ZA
MCKNIGHT, John Crawford; ZA
MAHOMED, Shanaaz; ZA
KAHN, Craig; ZA
BIAGIO, Dina; ZA
CILLIERS, Lodewyk Petrus; ZA
GRANT, Tyron James; ZA
BEHARIE, Tertia; ZA
VAN SCHALKWYK, Herman; ZA
PIENAAR, Danie; ZA
HANEKOM, Dirk Christiaan; ZA
PIENAAR, Danie; ZA
Priority Data:
2016/0775009.11.2016ZA
2016/0775109.11.2016ZA
Title (EN) ARTIFICIAL INTERVERTEBRAL DISC
(FR) DISQUE INTERVERTÉBRAL ARTIFICIEL
Abstract:
(EN) This invention concerns an artificial intervertebral disc for installation in an intervertebral space between adjacent vertebral bodies. The artificial intervertebral disc prosthesis comprises an upper plate, a lower plate and a mobile core element, which is, in use, located between the upper and lower plates. The mobile core element includes a first contoured surface that has a flexion/extension radius that is larger by a determined amount than the radius of its second contoured surface that results in an instantaneous centre of rotation below the midline of the intervertebral disc space, thereby approximating the typical instantaneous centre of rotation of a natural disc. The first contoured surface of the mobile core element has a lateral bending radius that is unequal to the value of the flexion/extension radius, thereby allowing the mobile core element to self-centre on the second surface of the upper plate when under preload. The mobile core element may further be compressible and may include a resilient element located within the mobile core element. Deformation of the resilient element may be contained to obtain an exponential increase in spring stiffness of the resilient element during compression.
(FR) La présente invention concerne un disque intervertébral artificiel destiné à être installé dans un espace intervertébral entre des corps vertébraux adjacents. La prothèse de disque intervertébral artificiel comprend une plaque supérieure, une plaque inférieure et un élément central mobile, qui est, lors de l'utilisation, situé entre les plaques supérieure et inférieure. L'élément central mobile comporte une première surface profilée qui possède un rayon de flexion/extension qui est plus grand d'une quantité déterminée que le rayon de sa seconde surface profilée, ce qui conduit à un centre instantané de rotation au-dessous de la ligne médiane de l'espace de disque intervertébral, approchant ainsi le centre instantané caractéristique de rotation d'un disque naturel. La première surface profilée de l'élément central mobile possède un rayon de courbure latéral qui est différent de la valeur du rayon de flexion/extension, permettant ainsi à l'élément central mobile de se centrer automatiquement sur la seconde surface de la plaque supérieure lorsqu'il est soumis à une précharge. L'élément central mobile peut en outre être compressible et peut comporter un élément élastique situé à l'intérieur de l'élément central mobile. La déformation de l'élément élastique peut être contenue en vue d'obtenir une augmentation exponentielle de la rigidité de ressort de l'élément élastique pendant la compression.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, 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, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, 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, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)