WO1995025486A1 - Corps vertebral a hauteur reglable - Google Patents

Corps vertebral a hauteur reglable Download PDF

Info

Publication number
WO1995025486A1
WO1995025486A1 PCT/EP1995/000744 EP9500744W WO9525486A1 WO 1995025486 A1 WO1995025486 A1 WO 1995025486A1 EP 9500744 W EP9500744 W EP 9500744W WO 9525486 A1 WO9525486 A1 WO 9525486A1
Authority
WO
WIPO (PCT)
Prior art keywords
height
vertebral body
section
body replacement
replacement according
Prior art date
Application number
PCT/EP1995/000744
Other languages
German (de)
English (en)
Inventor
Lutz Biedermann
Jürgen Harms
Original Assignee
Biedermann Motech 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 Biedermann Motech Gmbh filed Critical Biedermann Motech Gmbh
Publication of WO1995025486A1 publication Critical patent/WO1995025486A1/fr

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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
    • 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
    • A61F2/4611—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 of spinal prostheses
    • 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
    • A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
    • A61F2002/3006—Properties of materials and coating materials
    • A61F2002/30062—(bio)absorbable, biodegradable, bioerodable, (bio)resorbable, resorptive
    • A—HUMAN NECESSITIES
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    • 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
    • A61F2002/30199—Three-dimensional shapes
    • A61F2002/30224—Three-dimensional shapes cylindrical
    • A61F2002/30235—Three-dimensional shapes cylindrical tubular, e.g. sleeves
    • A—HUMAN NECESSITIES
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    • 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
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
    • A61F2002/30362—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit with possibility of relative movement between the protrusion and the recess
    • A61F2002/30364—Rotation about the common longitudinal axis
    • A61F2002/30367—Rotation about the common longitudinal axis with additional means for preventing said rotation
    • A—HUMAN NECESSITIES
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    • 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
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    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
    • A61F2002/30362—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit with possibility of relative movement between the protrusion and the recess
    • A61F2002/3037—Translation along the common longitudinal axis, e.g. piston
    • A61F2002/30372—Translation along the common longitudinal axis, e.g. piston with additional means for limiting said translation
    • A—HUMAN NECESSITIES
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    • 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
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30383—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by laterally inserting a protrusion, e.g. a rib into a complementarily-shaped groove
    • A61F2002/3039—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by laterally inserting a protrusion, e.g. a rib into a complementarily-shaped groove with possibility of relative movement of the rib within the groove
    • A61F2002/30398—Sliding
    • 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
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30405—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by screwing complementary threads machined on the parts themselves
    • A61F2002/30411—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by screwing complementary threads machined on the parts themselves having two threaded end parts connected by a threaded central part with opposite threads at its opposite ends, i.e. for adjusting the distance between both end parts by rotating the central part
    • 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
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    • 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
    • A61F2002/30537—Special structural features of bone or joint prostheses not otherwise provided for adjustable
    • A61F2002/3055—Special structural features of bone or joint prostheses not otherwise provided for adjustable for adjusting length
    • A—HUMAN NECESSITIES
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    • 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
    • A61F2002/30561—Special structural features of bone or joint prostheses not otherwise provided for breakable or frangible
    • 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
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    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
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    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30601—Special structural features of bone or joint prostheses not otherwise provided for telescopic
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • 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
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    • 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
    • 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
    • A61F2/30907—Nets or sleeves applied to surface of prostheses or in cement
    • A61F2002/30909—Nets
    • A61F2002/30912—Nets made of expanded metal, e.g. diamond mesh or metal nets having lozenge-shaped apertures
    • A—HUMAN NECESSITIES
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    • 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
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    • A61F2/4637—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for connecting or disconnecting two parts of a prosthesis
    • A61F2002/4638—Tools for performing screwing, e.g. nut or screwdrivers, or particular adaptations therefor
    • A—HUMAN NECESSITIES
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    • A61F2210/0004—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof bioabsorbable
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    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
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    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/0033—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
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    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
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    • A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00011—Metals or alloys
    • A61F2310/00023—Titanium or titanium-based alloys, e.g. Ti-Ni alloys

Definitions

  • the invention relates to a height-adjustable vertebral body replacement.
  • a height-adjustable vertebral body replacement is known from DE-GM 91 07 494.
  • This has a threaded rod which has a right-hand thread at one end and a left-hand thread at its other end and a screw-nut-shaped profile in the middle for engaging and rotating the threaded rod.
  • the threaded rod is connected at its two ends to stamps cooperating therewith, the free ends of which can be brought into engagement with opposing vertebral body surfaces.
  • the punches are first screwed onto the threaded rod so far that the distance between the outer surfaces is smaller than the distance between the vertebrae to be supported.
  • the two punches are held by hand at the opposite ends, while at the same time the threaded rod is rotated by engaging in the center until the punches come into engagement with the opposing vertebrae and by this engagement in a rotationally fixed position at the same time keep turning the threaded rod.
  • the two opposite star On their surfaces which come into engagement with the vertebrae, pels have spikes which can be brought into engagement with the vertebral bodies.
  • the object of the invention is to design a height-adjustable vertebral body replacement in such a way that it is easier to operate, since it is precisely the ease of use that plays an extremely large role in the field of use in vertebral surgery.
  • Fig. Lb is a plan view of the device shown in Fig. La;
  • FIG. 2a shows a side view of a first thread section and a profile axis
  • FIG. 2b shows a view of the element shown in FIG. 2a from below;
  • 3a shows a sectional view of the sleeve
  • FIG. 3b is a top view of the sleeve;
  • FIG. 4b is a plan view of the first Ge ⁇ threaded portion from below;
  • FIG. 5a shows a corresponding sectional illustration of a second threaded section
  • Fig. 5b threaded portion a top view of the second Ge ⁇ ;
  • 6a is a side view of part of a profile section
  • Fig. 6b is a top view of the element shown in Fig. 6a;
  • Fig. 7b is a side view of the element shown in Figure 6a together ⁇ men massageden with the element.
  • Fig. 8 is a side view in section.
  • the height-adjustable vertebral body replacement has a zylinderför--shaped sleeve 1, as seen in the axial direction from a first ⁇ section 2 and a second portion. 3 Between these two sections, the cylinder jacket has recesses 4, 5. On the inside of the cylinder jacket is cut 2 and 3 hen on the opposite sides of each ⁇ wells a projecting into the interior of the cylinder stop 6 vorgese ⁇ between the two From ⁇ . Furthermore, the cylinder has guide grooves 7, 8 which extend parallel to the cylinder axis on two opposite sides.
  • the vertebral body replacement has a first abutment body 9 and a second abutment body 10.
  • Both abutment bodies are cylindrical and have an outer diameter which is so much smaller than the inner diameter of the cylindrical sleeve 1 that the abutment bodies can slide straight in the cylinder.
  • the abutment bodies both have projections 11, 12 which project outwards at the locations corresponding to the grooves 7 and 8 and are dimensioned such that they can slide in the grooves 7, 8.
  • the first abutment body 9 has a left-hand thread on the inside, while the second abutment body has a right-hand thread with a corresponding pitch on its inside.
  • the abutment bodies 9, 10 have on the outer edge surfaces 13, 14, which cooperate with the vertebral bodies to be supported, and outwardly projecting tines 28, 29 which come into engagement with the associated vertebral bodies.
  • the area of the protruding prongs forms a jacket whose wall thickness is thinner than that of the abutment body 9, 10 and which preferably has a wall thickness of approximately 1 mm.
  • the jacket-shaped wall has recesses 30, 31 between the teeth and the edge surfaces 13, 14.
  • the tines themselves have protruding sections 32, 33 for cutting off. This makes it possible for the surgeon to cut on site, for example by cutting off the sections 32, 33 indicated in FIG. 8, wedge-shaped end faces of the prongs so that the end faces formed by the prongs run at an angle to one another.
  • the recesses 30, 31 are preferably designed as triangles extending in the axial direction or as diamonds.
  • a threaded device 15 is provided in the interior of the two abutment bodies. This includes at one end a first Ge ⁇ threaded portion 16. This is cylindrical and has an external thread, which is formed into the internal thread of the first Wi ⁇ derlager stresses 9 appropriately.
  • the threaded section is formed in one piece with a coaxially extending profile axis 17. The profile has the shape shown in FIG. 2b.
  • the length of the thread device corresponds to the length of the sleeve 1. Die
  • the length of the first threaded section 16 corresponds to the length of the first abutment body 9.
  • the thread device 15 further comprises the second threaded section 18 shown in FIG. 7a.
  • This is designed as a cylindrical section and has a thread on its outer cylindrical surface which corresponds to the internal thread of the two ⁇ th abutment body 2 corresponds.
  • the length of the second threaded section corresponds to the length of the second abutment body 10.
  • the second threaded section has a concentric recess 19, the cross section of which corresponds to the cross section of the profile axis 17.
  • the vertebral body replacement has a profile section 19.
  • the profile section 19 comprises a plate-shaped section 20. This has a first section 21, the outer diameter of which is smaller than the remaining clear diameter between the stop parts 6 projecting into the cylinder interior. Adjoining this is a second section 22 which is circular and the diameter of which is greater than the distance between the two stop parts 6 and smaller than the inner diameter of the cylindrical sleeve 1.
  • the plate-shaped section 22 has a coaxial recess 23, the cross section of which corresponds to the outer cross section of the profile axis 17.
  • the first section 21 has recesses 24 which extend in the radial direction and are angularly offset relative to one another and which serve for engagement by means of a rod-shaped tool 25.
  • the profile section 19 comprises a cylindrical plate 26 corresponding to the second section, the outer diameter of which corresponds to the outer diameter of the second section and which in the same way has a coaxial recess 27, the cross section of which corresponds to the cross section of the prof axis 17.
  • the parts are composed as follows:
  • the plate-shaped section 20 is pushed onto the profile axis in such a way that the second section rests on the lower surface of the first threaded section. Furthermore, the first threaded section The first abutment body 9 is completely screwed on. The part thus pre-assembled is inserted from above into the first section of the sleeve 1 until the second section rests on the stops 6 with its protruding edge. From the other side of the sleeve, the plate 26 is pushed up to the stop on the underside of the second section or the stop parts 6 through the second section.
  • the second abutment body 10 is completely screwed onto the second threaded section 18, and these two parts are then fully inserted into the second section 3 of the sleeve 1 when the lugs 11, 12 engage the grooves 7, 8 and the profile section 19 with the profile axis 17 -
  • the dimensioning of the profile section 19 is chosen so that there is a sufficient frictional connection between part 18 and profile axis 17.
  • the vertebral body replacement assembled in this way has its smallest extension in the axial direction.
  • the operator grasps the device by gripping the sleeve with one hand and engages with a rod-shaped tool 25 in the recesses 24 and rotates the thread device 15 over the first section 21 and as a result shifts the two abutment bodies 9, 10 so far outwards, until the distance between the oppositely directed edge surfaces 13, 14 or the prongs 28, 29 protruding therefrom is so large that the vertebral bodies are adequately supported.
  • the edges with the prongs 28, 29 projecting outward from the abutment bodies 9, 10 have diamond-shaped recesses 30, 31, which are diamond-shaped or triangular in the form of diamond sections.
  • the tines protruding from these recesses each have an essentially identical length.
  • the prongs protruding from the recesses 30, 31 are so long that the sections 32, 33 indicated by the dash-dotted lines in FIG. 8 can be separated, so that, if desired, a vertebral body replacement in cross-section is possible create. Titanium material or a body-absorbable plastic material is chosen in particular as the material for the vertebral body replacement.
  • the space surrounded by the thinner sheath carrying the teeth 28, 29 is filled with the body's own or foreign bone material.
  • the protruding prongs 28, 29 engage in the adjacent vertebral body cover plate. There is then an overgrowth between the adjacent vertebral bodies or vertebral body cover plates and the implant, so that anchoring takes place which makes it possible to use the height-adjustable vertebral body replacement according to the invention as a long-term implant.

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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Neurology (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

La présente invention concerne un corps vertébral artificiel réglable en hauteur, pourvu d'un manchon (1) et, vu dans le sens axial, d'un premier corps d'appui (9) et d'un second corps d'appui (10), montés chacun sur un côté du manchon, bloqués en rotation à l'intérieur du manchon et mobiles dans le sens axial. Pour permettre le mouvement coaxial des corps d'appui (9, 10), un dispositif fileté (15) s'engage dans ces derniers.
PCT/EP1995/000744 1994-03-18 1995-03-01 Corps vertebral a hauteur reglable WO1995025486A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4409392.6 1994-03-18
DE19944409392 DE4409392A1 (de) 1994-03-18 1994-03-18 Höhenverstellbarer Wirbelkörper

Publications (1)

Publication Number Publication Date
WO1995025486A1 true WO1995025486A1 (fr) 1995-09-28

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PCT/EP1995/000744 WO1995025486A1 (fr) 1994-03-18 1995-03-01 Corps vertebral a hauteur reglable

Country Status (3)

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DE (1) DE4409392A1 (fr)
TW (1) TW294971U (fr)
WO (1) WO1995025486A1 (fr)

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US5800550A (en) * 1996-03-13 1998-09-01 Sertich; Mario M. Interbody fusion cage
US6783547B2 (en) * 2002-04-05 2004-08-31 Howmedica Corp. Apparatus for fusing adjacent bone structures
US6866682B1 (en) 1999-09-02 2005-03-15 Stryker Spine Distractable corpectomy device
US8231681B2 (en) 2006-04-27 2012-07-31 Warsaw Orthopedic Self-contained expandable implant and method
US8292963B2 (en) 2009-04-23 2012-10-23 Warsaw Orthopedic, Inc. Expandable implant for supporting skeletal structures
US8690950B2 (en) 2007-10-30 2014-04-08 Aesculap Implant Systems, Llc Vertebral body replacement device and method for use to maintain a space between two vertebral bodies within a spine
US8702719B2 (en) 2008-10-16 2014-04-22 Aesculap Implant Systems, Llc Surgical instrument and method of use for inserting an implant between two bones

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DE19519101B4 (de) * 1995-05-24 2009-04-23 Harms, Jürgen, Prof. Dr. Höhenverstellbarer Wirbelkörperersatz
EP0857042B1 (fr) * 1995-10-20 2001-11-07 SYNTHES AG, Chur Implant intervertebral avec corps creux profile et compressible
DE19622827B4 (de) * 1996-06-07 2009-04-23 Ulrich, Heinrich Implantat zum Einsetzen zwischen Wirbelkörper als Platzhalter
DE29616778U1 (de) * 1996-09-26 1998-01-29 Howmedica GmbH, 24232 Schönkirchen Wirbelkörperplatzhalter
ES2150405T1 (es) 1997-04-25 2000-12-01 Stryker France Sa Implantes intersomaticos en dos partes.
ES2205159T3 (es) * 1997-09-30 2004-05-01 Centerpulse Orthopedics Ltd. Cuerpo de apoyo tubular para puentear dos vertebras.
DE19803700A1 (de) 1998-01-30 1999-08-19 Koenigsee Implantate & Instr Höhenvariierbares Wirbelkörperimplantat
AR027685A1 (es) 2000-03-22 2003-04-09 Synthes Ag Forma de tejido y metodo para realizarlo
WO2001070139A2 (fr) * 2000-03-22 2001-09-27 Synthes (U.S.A) Cages de reconstruction osseuse
JP2003527927A (ja) 2000-03-31 2003-09-24 ケーニッヒゼー インプランターテ ウント インストルメンテ ツーア オステオジンテーゼ ゲーエムベーハー 高さが可変の椎体インプラント
AR038680A1 (es) 2002-02-19 2005-01-26 Synthes Ag Implante intervertebral
EP2335656B1 (fr) 2003-02-06 2012-09-05 Synthes GmbH Implant intervertébral
US7819903B2 (en) 2003-03-31 2010-10-26 Depuy Spine, Inc. Spinal fixation plate
DE102004021861A1 (de) 2004-05-04 2005-11-24 Biedermann Motech Gmbh Flexibler Platzhalter
EP1949872B1 (fr) * 2004-05-04 2016-12-28 Biedermann Technologies GmbH & Co. KG Ecarteur flexible
US7674296B2 (en) 2005-04-21 2010-03-09 Globus Medical, Inc. Expandable vertebral prosthesis
US20100305704A1 (en) 2006-02-27 2010-12-02 Synthes Gmbh Intervertebral implant with fixation geometry
US7879096B2 (en) 2006-04-27 2011-02-01 Warsaw Orthopedic, Inc. Centrally driven expandable implant
US7914581B2 (en) 2006-04-27 2011-03-29 Warsaw Orthopedic, Inc. Expandable implant, instrument, and method
US7758648B2 (en) 2006-04-27 2010-07-20 Warsaw Orthopedic, Inc. Stabilized, adjustable expandable implant and method
US8182537B2 (en) 2007-10-30 2012-05-22 Aesculap Implant Systems, Llc Vertebral body replacement device and method for use to maintain a space between two vertebral bodies within a spine
US20090112325A1 (en) * 2007-10-30 2009-04-30 Biospine, Llc Footplate member and a method for use in a vertebral body replacement device
WO2009064644A1 (fr) 2007-11-16 2009-05-22 Synthes(U.S.A.) Implant intervertébral à profil bas
EP2352462B1 (fr) 2008-11-07 2017-03-29 Synthes GmbH Séparateur intervertébral sans profil et ensemble plaque couplé
US8142435B2 (en) 2009-02-19 2012-03-27 Aesculap Implant Systems, Llc Multi-functional surgical instrument and method of use for inserting an implant between two bones
WO2012088238A2 (fr) 2010-12-21 2012-06-28 Synthes Usa, Llc Implants intervertébraux, systèmes et procédés d'utilisation
US9241809B2 (en) 2010-12-21 2016-01-26 DePuy Synthes Products, Inc. Intervertebral implants, systems, and methods of use
US9867718B2 (en) 2014-10-22 2018-01-16 DePuy Synthes Products, Inc. Intervertebral implants, systems, and methods of use
US10828077B2 (en) 2017-09-22 2020-11-10 Howmedica Osteonics Corp. Distal radius wedge screw

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Cited By (11)

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Publication number Priority date Publication date Assignee Title
US5800550A (en) * 1996-03-13 1998-09-01 Sertich; Mario M. Interbody fusion cage
US6866682B1 (en) 1999-09-02 2005-03-15 Stryker Spine Distractable corpectomy device
US6783547B2 (en) * 2002-04-05 2004-08-31 Howmedica Corp. Apparatus for fusing adjacent bone structures
US8231681B2 (en) 2006-04-27 2012-07-31 Warsaw Orthopedic Self-contained expandable implant and method
US8690950B2 (en) 2007-10-30 2014-04-08 Aesculap Implant Systems, Llc Vertebral body replacement device and method for use to maintain a space between two vertebral bodies within a spine
US9034046B2 (en) 2007-10-30 2015-05-19 Aesculap Implant Systems, Llc Vertebral body replacement device and method for use to maintain a space between two vertebral bodies within a spine
US10201432B2 (en) 2007-10-30 2019-02-12 Aesculap Implant Systems, Llc Vertebral body replacement device and method for use to maintain a space between two vertebral bodies within a spine
US10806595B2 (en) 2007-10-30 2020-10-20 Aesculap Implant Systems, Llc Vertebral body replacement device and method for use to maintain a space between two vertebral bodies within a spine
US10881527B2 (en) 2007-10-30 2021-01-05 Aesculap Implant Systems, Llc Vertebral body replacement device and method for use to maintain a space between two vertebral bodies within a spine
US8702719B2 (en) 2008-10-16 2014-04-22 Aesculap Implant Systems, Llc Surgical instrument and method of use for inserting an implant between two bones
US8292963B2 (en) 2009-04-23 2012-10-23 Warsaw Orthopedic, Inc. Expandable implant for supporting skeletal structures

Also Published As

Publication number Publication date
DE4409392A1 (de) 1995-09-21
TW294971U (en) 1997-01-01

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