WO2004078075A1 - Prothese de disque vertebrale pour la colonne vertebrale cervicale - Google Patents

Prothese de disque vertebrale pour la colonne vertebrale cervicale Download PDF

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Publication number
WO2004078075A1
WO2004078075A1 PCT/EP2004/002130 EP2004002130W WO2004078075A1 WO 2004078075 A1 WO2004078075 A1 WO 2004078075A1 EP 2004002130 W EP2004002130 W EP 2004002130W WO 2004078075 A1 WO2004078075 A1 WO 2004078075A1
Authority
WO
WIPO (PCT)
Prior art keywords
intervertebral disc
disc prosthesis
prosthesis according
cranial
ventral
Prior art date
Application number
PCT/EP2004/002130
Other languages
German (de)
English (en)
Inventor
Hans Jörg MEISEL
Guido Fehling
Original Assignee
Fehling Instruments Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fehling Instruments Gmbh filed Critical Fehling Instruments Gmbh
Publication of WO2004078075A1 publication Critical patent/WO2004078075A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—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
    • A61F2/00—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
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
    • A61F2/4455—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages
    • A61F2/447—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages substantially parallelepipedal, e.g. having a rectangular or trapezoidal cross-section
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—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
    • A61F2/00—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
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
    • A61F2/442—Intervertebral or spinal discs, e.g. resilient
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—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
    • A61F2/00—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
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30108—Shapes
    • A61F2002/3011—Cross-sections or two-dimensional shapes
    • A61F2002/30112—Rounded shapes, e.g. with rounded corners
    • A61F2002/30133—Rounded shapes, e.g. with rounded corners kidney-shaped or bean-shaped
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—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
    • A61F2/00—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
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30593—Special structural features of bone or joint prostheses not otherwise provided for hollow
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—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
    • A61F2/00—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
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30772—Apertures or holes, e.g. of circular cross section
    • A61F2002/30774—Apertures or holes, e.g. of circular cross section internally-threaded
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—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
    • A61F2/00—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
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30841—Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes
    • A61F2002/30843—Pyramidally-shaped
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—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
    • A61F2/00—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
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30841—Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes
    • A61F2002/30845—Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes with cutting edges
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—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
    • A61F2/00—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
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
    • A61F2002/4629—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof connected to the endoprosthesis or implant via a threaded connection
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0004—Rounded shapes, e.g. with rounded corners
    • A61F2230/0015—Kidney-shaped, e.g. bean-shaped

Definitions

  • the invention relates to an intervertebral disc prosthesis for the cervical spine according to the preamble of claim 1.
  • intervertebral discs e.g. B. herniated disc
  • the damaged intervertebral disc is removed and replaced with an implanted intervertebral disc prosthesis.
  • an intervertebral disc prosthesis for the cervical spine is e.g. B. known from WO 98/58604.
  • This intervertebral disc prosthesis consists of a metallic circular cylindrical body which is inserted between the vertebral bodies. The cranial surface and the caudal lower surface of the body are serrated for anchoring in the vertebral bodies.
  • intervertebral disc prostheses from a biocompatible plastic, e.g. B. from polyether ether ketone (PEEK).
  • PEEK polyether ether ketone
  • the invention has for its object to provide an intervertebral disc prosthesis for the cervical spine that anatomically replaces the natural intervertebral disc as well as possible and ensures high positional stability.
  • the intervertebral disc prosthesis for the cervical spine has an approximately rectangular outer contour with approximately parallel lateral outer surfaces and approximately parallel ventral and dorsal outer surfaces.
  • the lateral outer surfaces and the ventral outer surface are preferably slightly convexly curved outwards.
  • the dorsal outer surface is concavely curved inwards, so that there is sufficient space for the dural sac running in the spinal canal. A collision of the intervertebral disc prosthesis with the dural sac and a possible Damage to the dural sac is therefore excluded with a high degree of certainty.
  • the cranial surface of the body of the intervertebral disc prosthesis is convexly curved, so that this surface adapts optimally to the concave arched cover plate of the vertebral body.
  • the lower surface of the body is preferably also slightly convex, the bulging of the surface having a greater curvature, i. H. a smaller radius of curvature than the lower surface.
  • the surface and the lower surface of the body have teeth, which is preferably formed with pyramidal teeth.
  • the contour of the free inner cutout of the body essentially follows the outer contour of the body, so that the surface and the lower surface each run with an approximately constant width over the entire circumference.
  • This design of the intervertebral disc prosthesis optimally adapts the disc-shaped body to the anatomical shape of the vertebral body.
  • the surface and the lower surface that support the vertebral bodies run close to the outer circumference of the vertebrae. cover plates, so that the vertebrae are supported in the area in which the bone substance of the vertebral body has the highest stability.
  • the body of the intervertebral disc prosthesis is recessed by the inner cutout. This saves material in the inner area, which cannot make a significant contribution to the support, so that the weight of the intervertebral disc prosthesis remains as low as possible.
  • the intervertebral disc prosthesis supports the vertebrae evenly over the circumference in their load-bearing bone area.
  • the rectangular shape of the outer contour and the inner contour together with the toothing result in a high degree of security against rotation.
  • the intervertebral disc prosthesis is preferably manufactured in two versions.
  • the surface and the lower surface run essentially parallel to one another, while in the other embodiment the surface and the lower surface run in a wedge shape with one another, the distance from the surface and lower surface increasing from dorsal to ventral.
  • the intervertebral disc prosthesis is preferably made from a biocompatible plastic with suitable mechanical properties, polyether ether ketone (PEEK) being particularly suitable.
  • PEEK polyether ether ketone
  • Show it 1 is an axial plan view of the intervertebral disc prosthesis
  • FIG. 3 is a ventral side view of the intervertebral disc prosthesis
  • Fig. 5 is a perspective view of the intervertebral disc prosthesis
  • FIG. 6 a section corresponding to FIG. 4 of a wedge-shaped embodiment of the intervertebral disk prosthesis.
  • the intervertebral disc prosthesis consists of a flat disc-shaped body 10, which is preferably made of PEEK.
  • the body 10 has approximately the shape of a rectangle with rounded corners in the axial projection.
  • the dorsal-ventral dimension is slightly larger than the lateral dimension.
  • the lateral outer surfaces 12 do not run exactly parallel, but at a small angle, so that the distance between the lateral outer surfaces 12 on the dorsal side is somewhat less than on the ventral side. In the axial projection shown in FIG. 1, the lateral outer surfaces 12 are curved slightly convexly outwards.
  • the ventral outer surface 14 is also slightly convexly curved outwards.
  • the dorsal outer surface 16 is concavely curved inwards in the axial projection, the radius of curvature of the curvature of the dorsal outer surface 16 being smaller than the radius of curvature of the ventral outer surface 14, ie the dorsal outer surface 16 is more curved.
  • the cranial surface 18 and the caudal lower surface 20 of the body 10 are each convexly curved. The axial height of the body 10 thus decreases against the lateral wheels 12, the ventral edge 14 and the dorsal edge 16.
  • the cranial surface 18 is bulged more than the caudal lower surface 20, so it has a smaller radius of curvature.
  • the body 10 has an inner cutout 22 which is axially continuous.
  • the cutout 22 follows in its circumferential contour the outer circumferential contour of the body 10, as a result of which the cranial.
  • Surface 18 and the caudal lower surface 20 have the shape of a circumferential strip of constant width, as can be seen in FIG. 1.
  • the cranial surface 18 and the caudal lower surface 20 each have a toothed structure, which is formed by pyramidal teeth 24.
  • a threaded bore 26 is provided in the center of the ventral outer surface 14 and leads from this outer surface 14 perpendicularly through the body 10 into the cutout 22.
  • a positioning instrument can be inserted into the threaded bore 26, which is used to handle the intervertebral disc prosthesis during implantation.
  • the cranial surface 18 and the caudal lower surface 20 run essentially parallel to one another (apart from the surface curvature), as is shown in FIGS. 2 and 3.
  • the cranial surface 18 and the caudal lower surface 20 run in a wedge shape at an angle to one another, the distance the surface 18 and the lower surface 20 is largest on the ventral side and decreases in the dorsal direction.
  • the intervertebral disc prosthesis has the following dimensions:
  • Radius of curvature of the ventral outer surface approx. 24 mm Radius of curvature of the dorsal outer surface: approx. 18 mm
  • Axial height of the body approx. 3-5 mm
  • Width of the cranial surface and the caudal lower surface between the outer contour and the inner contour of the cutout approx. 3 mm

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Neurology (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Abstract

L'invention concerne une prothèse de disque intervertébral pour la colonne vertébrale cervicale comprenant un corps (10) se présentant sous la forme d'un disque et comportant une première encoche (22) interne. Le corps (10) présente une forme quasiment rectangulaire. Les surfaces (12) latérales et la surface (14) ventrale sont courbées de manière convexe, alors que la surface (16) dorsale est courbée de manière concave. La face supérieure (18) crânienne et la face inférieure (20) caudale sont courbées de manière convexe et présentent des dents (24) en forme de pyramide.
PCT/EP2004/002130 2003-03-06 2004-03-03 Prothese de disque vertebrale pour la colonne vertebrale cervicale WO2004078075A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10309702.3 2003-03-06
DE10309702A DE10309702A1 (de) 2003-03-06 2003-03-06 Bandscheibenprothese für die Halswirbelsäule

Publications (1)

Publication Number Publication Date
WO2004078075A1 true WO2004078075A1 (fr) 2004-09-16

Family

ID=32864173

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2004/002130 WO2004078075A1 (fr) 2003-03-06 2004-03-03 Prothese de disque vertebrale pour la colonne vertebrale cervicale

Country Status (2)

Country Link
DE (1) DE10309702A1 (fr)
WO (1) WO2004078075A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005024927A1 (de) * 2005-05-23 2006-12-21 Ohst Medizintechnik Ag Wirbelimplantat zum Einsetzen in einen Wirbelzwischenraum

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9132021B2 (en) 2011-10-07 2015-09-15 Pioneer Surgical Technology, Inc. Intervertebral implant
AU2018327353A1 (en) 2017-09-08 2020-03-19 Pioneer Surgical Technology, Inc. Intervertebral implants, instruments, and methods
USD907771S1 (en) 2017-10-09 2021-01-12 Pioneer Surgical Technology, Inc. Intervertebral implant

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999038461A2 (fr) * 1998-01-30 1999-08-05 Synthes Ag Chur Prothese intervertebrale allogenique
EP1138285A1 (fr) * 2000-03-29 2001-10-04 Implant Design AG Cage vertébrale pour poser entre les vertèbres de la colonne vertébrale
WO2001085069A1 (fr) * 2000-05-11 2001-11-15 Scient'x Implant intersomatique anterieur lombaire
US20020029084A1 (en) * 1998-08-03 2002-03-07 Paul David C. Bone implants with central chambers
US20020087212A1 (en) * 2000-12-29 2002-07-04 James Stephen B. Spinal implant

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999038461A2 (fr) * 1998-01-30 1999-08-05 Synthes Ag Chur Prothese intervertebrale allogenique
US20020029084A1 (en) * 1998-08-03 2002-03-07 Paul David C. Bone implants with central chambers
EP1138285A1 (fr) * 2000-03-29 2001-10-04 Implant Design AG Cage vertébrale pour poser entre les vertèbres de la colonne vertébrale
WO2001085069A1 (fr) * 2000-05-11 2001-11-15 Scient'x Implant intersomatique anterieur lombaire
US20020087212A1 (en) * 2000-12-29 2002-07-04 James Stephen B. Spinal implant

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005024927A1 (de) * 2005-05-23 2006-12-21 Ohst Medizintechnik Ag Wirbelimplantat zum Einsetzen in einen Wirbelzwischenraum
DE102005024927B4 (de) * 2005-05-23 2007-07-12 Ohst Medizintechnik Ag Wirbelimplantat zum Einsetzen in einen Wirbelzwischenraum

Also Published As

Publication number Publication date
DE10309702A1 (de) 2004-09-16

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