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1. WO2000042953 - PROSTHETIC NUCLEUS REPLACEMENT FOR SURGICAL RECONSTRUCTION OF INTERVERTEBRAL DISCS AND TREATMENT METHOD

Publication Number WO/2000/042953
Publication Date 27.07.2000
International Application No. PCT/US2000/001468
International Filing Date 20.01.2000
Chapter 2 Demand Filed 10.07.2000
IPC
A61F 2/00 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
2Filters 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
A61F 2/30 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
2Filters 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
02Prostheses implantable into the body
30Joints
A61F 2/44 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
2Filters 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
02Prostheses implantable into the body
30Joints
44for the spine, e.g. vertebrae, spinal discs
A61F 2/46 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
2Filters 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
02Prostheses implantable into the body
30Joints
46Special tools for implanting artificial joints
CPC
A61F 2/442
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
2Filters 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
02Prostheses implantable into the body
30Joints
44for the spine, e.g. vertebrae, spinal discs
442Intervertebral or spinal discs, e.g. resilient
A61F 2002/3008
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
2Filters 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
02Prostheses implantable into the body
30Joints
30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
30003Material related properties of the prosthesis or of a coating on the prosthesis
3006Properties of materials and coating materials
3008radio-opaque, e.g. radio-opaque markers
A61F 2002/30253
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
2Filters 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
02Prostheses implantable into the body
30Joints
30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
30108Shapes
30199Three-dimensional shapes
30252quadric-shaped
30253ellipsoidal or ovoid
A61F 2002/30299
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
2Filters 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
02Prostheses implantable into the body
30Joints
30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
30108Shapes
30199Three-dimensional shapes
30299umbrella-shaped or mushroom-shaped
A61F 2002/30878
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
2Filters 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
02Prostheses implantable into the body
30Joints
30767Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
30771applied in original prostheses, e.g. holes or grooves
30878with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
A61F 2002/4435
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
2Filters 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
02Prostheses implantable into the body
30Joints
44for the spine, e.g. vertebrae, spinal discs
442Intervertebral or spinal discs, e.g. resilient
4435Support means or repair of the natural disc wall, i.e. annulus, e.g. using plates, membranes or meshes
Applicants
  • LAWSON, Kevin, Jon [US/US]; US
Inventors
  • LAWSON, Kevin, Jon; US
Agents
  • HILL, Robert, Charles; 235 Montgomery Street #800 San Francisco, CA 94104, US
Priority Data
09/237,00525.01.1999US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PROSTHETIC NUCLEUS REPLACEMENT FOR SURGICAL RECONSTRUCTION OF INTERVERTEBRAL DISCS AND TREATMENT METHOD
(FR) NOYAU PROTHETIQUE DE REMPLACEMENT DESTINE A UNE RECONSTRUCTION CHIRURGICALE DE DISQUES INTERVERTEBRAUX ET METHODE DE TRAITEMENT
Abstract
(EN)
A prosthetic nucleus (30) replacement comprises a solid flattened oval disk. The top surface (32) of the disc is domed, and has a crest that is about three times higher than the crest on the domed bottom surface (34). Both top, and bottom surfaces are therefore convex. A peg (36) extends down from the middle of the bottom domed surface (34), and is used to pin the disc to the lower of two vertebrae it fits between. Metal markers are inserted into the peg (36), and an outside edge of the disc (22) so that radiographs can be used to determine the disc's in situ position. The prosthetic nucleus (30) replacement is surgically implanted into the hollowed out intervertebral space through a flap cut in the natural annulus fibrosis. The lower vertebrae (22) is prepared to receive the peg (36) by clearing the material covering the top of the bone matrix. Bone cement is used around the peg (36) to ensure a tight fit, and immobile attachment of the disc to the lower vertebrae (22).
(FR)
L'invention concerne un noyau prothétique (30) de remplacement qui comprend un disque oval plein aplati. La surface supérieure (32) du disque est bombée et présente une crête presque trois fois plus haute que la crête située sur la surface inférieure bombée (34). Les surfaces supérieure et inférieure sont donc convexes. Une cheville (36) faisant saillie depuis le milieu de la surface inférieure bombée (34) est utilisée pour fixer le disque au vertèbre inférieur, entre deux vertèbres. Des repères métalliques sont insérés dans la cheville (36) et dans un bord extérieur du (22) disque, si bien que des radiographies peuvent être utilisées pour déterminer la position du disque $i(in situ). Le noyau prothétique (30) de remplacement est implanté par chirurgie dans l'espace intervertébral évidé, à travers une fente à rabat ménagée dans l'anneau fibreux naturel du disque intervertébral. Le vertèbre inférieur (22) est préparé pour recevoir la cheville (36) par dégagement de la matière recouvrant la partie supérieure de la matrice osseuse. Du cément est disposé autour de la cheville (36) pour assurer un ajustement serré et une fixation immobile du disque sur le vertèbre inférieur (22).
Also published as
Latest bibliographic data on file with the International Bureau