DE29712331U1 - Implant for the attachment of vertebrae - Google Patents
Implant for the attachment of vertebraeInfo
- Publication number
- DE29712331U1 DE29712331U1 DE29712331U DE29712331U DE29712331U1 DE 29712331 U1 DE29712331 U1 DE 29712331U1 DE 29712331 U DE29712331 U DE 29712331U DE 29712331 U DE29712331 U DE 29712331U DE 29712331 U1 DE29712331 U1 DE 29712331U1
- Authority
- DE
- Germany
- Prior art keywords
- implant
- implant according
- bone
- sleeve
- vertebrae
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
- 239000007943 implant Substances 0.000 title claims description 65
- 238000010079 rubber tapping Methods 0.000 claims description 4
- 238000001356 surgical procedure Methods 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 208000020307 Spinal disease Diseases 0.000 claims description 2
- 210000000988 bone and bone Anatomy 0.000 description 28
- 239000012634 fragment Substances 0.000 description 10
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000004927 fusion Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 210000000845 cartilage Anatomy 0.000 description 2
- 206010061310 Nerve root injury Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 210000003041 ligament Anatomy 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000011164 ossification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 210000000278 spinal cord Anatomy 0.000 description 1
- 208000020431 spinal cord injury Diseases 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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
- A61F2/446—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 having a circular or elliptical cross-section substantially parallel to the axis of the spine, e.g. cylinders or frustocones
-
- 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
- A61F2/30721—Accessories
- A61F2/30744—End caps, e.g. for closing an endoprosthetic cavity
-
- 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
- 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
- A61F2/28—Bones
- A61F2002/2835—Bone graft implants for filling a bony defect or an endoprosthesis cavity, e.g. by synthetic material or biological material
-
- 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
- A61F2002/30138—Convex polygonal shapes
- A61F2002/30143—Convex polygonal shapes hexagonal
-
- 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
- A61F2002/30108—Shapes
- A61F2002/30199—Three-dimensional shapes
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- A61F2002/30235—Three-dimensional shapes cylindrical tubular, e.g. sleeves
-
- 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
-
- 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
- A61F2002/30772—Apertures or holes, e.g. of circular cross section
- A61F2002/30777—Oblong apertures
-
- 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
- A61F2002/30784—Plurality of holes
- A61F2002/30787—Plurality of holes inclined obliquely with respect to each other
-
- 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
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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
- 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
- A61F2002/3085—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with a threaded, e.g. self-tapping, bone-engaging surface, e.g. external surface
-
- 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
- A61F2002/3085—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with a threaded, e.g. self-tapping, bone-engaging surface, e.g. external surface
- A61F2002/30863—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with a threaded, e.g. self-tapping, bone-engaging surface, e.g. external surface the entry end surface having flutes, relief grooves, starter notches or bevelled indentations
-
- 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
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2002/448—Joints for the spine, e.g. vertebrae, spinal discs comprising multiple adjacent spinal implants within the same intervertebral space or within the same vertebra, e.g. comprising two adjacent spinal implants
-
- A—HUMAN NECESSITIES
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- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
-
- A—HUMAN NECESSITIES
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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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- A61F2230/0017—Angular shapes
-
- A—HUMAN NECESSITIES
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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
- A61F2230/0063—Three-dimensional shapes
- A61F2230/0069—Three-dimensional shapes cylindrical
-
- 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
- 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
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)
- Surgical Instruments (AREA)
Description
Die Erfindung betrifft ein Implantat zur Befestigung von Wirbeln zur chirurgischen Behandlung von mit verschiedenen segmentalen Instabilitäten einhergehenden Wirbelsäulenerkrankungen.The invention relates to an implant for fixing vertebrae for the surgical treatment of spinal diseases associated with various segmental instabilities.
Das Grundproblem der Praxis der Wirbelsäulenchirurgie besteht in der Verfahrensweise der Ausbildung der knöcherigen Verbindung zwischen den Wirbeln. Eine Fusion zwischen den Wirbelsäulensegmenten ermöglicht die Lösung der mit Instabilitäten einhergehenden Probleme und die Wiederherstellung der geschwächten Statik, wobei die Vereinigung von zwei benachbarten Wirbelkörpern auch ermöglicht, daß durch Entfernung der hinteren Wirbelteile die durch die Verengung des Wirbelkanals hervorgerufenen Problerne gelöst werden können.The basic problem in the practice of spinal surgery is the procedure of forming the bony connection between the vertebrae. A fusion between the spinal segments enables the problems associated with instability to be solved and the weakened statics to be restored, whereby the union of two adjacent vertebral bodies also enables the problems caused by the narrowing of the spinal canal to be solved by removing the rear parts of the vertebrae.
Nach der derzeitigen Praxis wird zur Ausbildung der knöcherigen Verbindung im allgemeinen eine hintere Freilegung durchgeführt und es werden von hinten einsetzbare fixierende Implantate verwendet.According to current practice, to form the bony union, a posterior exposure is generally performed and posteriorly insertable fixation implants are used.
Zur Stabilisierung der Wirbelsäulenveränderungen verwendete man anfangs Knochenplatten. Diese Knochenplatten sind aus biokompatibler Legierung gefertigte Platten verschiedener Länge, welche mit Bohrungen verschiedener Anordnung versehen sind. Bei der Operation werden diese Knochenplatten an beiden Seiten der Wirbelsäule mittels Knochenschrauben an die gesunden Wirbel befestigt, wodurch die Stabilität der Wirbelsäule gesichert wird.Bone plates were initially used to stabilize the spinal changes. These bone plates are made of biocompatible alloy and are of various lengths and have holes in different arrangements. During the operation, these bone plates are attached to the healthy vertebrae on both sides of the spine using bone screws, which ensures the stability of the spine.
In der Praxis hat sich jedoch herausgestellt, daß nach einem anfänglichen eine bedeutende Steifheit sichernden Stadium zwischen der Knochenplatte und den Schraubenköpfen eine Verschiebung erfolgte, wodurch die spätere Stabilität nicht immer ausreichend war. Nachteilig erwies sich auch, daß zur Sicherung einer entsprechenden Stabilität unter und über dem/den geschädigten Segment/Segmenten immer jeweils zwei gesunde Wirbel miteinander verschraubt und versteift werden mußten, was bedeutete, daß mindestens bei vier gesunden Wirbeln die Bewegungsmöglichkeit unterbundenIn practice, however, it has been found that after an initial stage of ensuring significant stiffness, a shift occurred between the bone plate and the screw heads, which meant that subsequent stability was not always sufficient. Another disadvantage was that in order to ensure appropriate stability under and above the damaged segment(s), two healthy vertebrae always had to be screwed together and stiffened, which meant that the possibility of movement was prevented in at least four healthy vertebrae.
werden mußte.had to become.
Außerdem verursachten die Folgen der Verschiebung und des Bruchs der Knochenplatten bedeutende biomechanische Probleme und Rückenmark-, sowie Nervenwurzelverletzungen.In addition, the consequences of the displacement and fracture of the bone plates caused significant biomechanical problems and spinal cord and nerve root injuries.
Heutzutage werden die inneren Fixierelemente (fixateur interne) am meisten verbreitet verwendet. Das sind solche Vorrichtungen, bei denen die transpedikular eingesetzten Knochenschrauben über ein paralleles Gestänge verbunden sind. Eine derartige Vorrichtung ist unter anderen in der Offenlegungsschrift DE 36 39 810 beschrieben. Bei dieser Lösung wird/werden als paralleles Gestänge eine Gewindespannspindel oder -spindeln verwendet, an denen mit Hilfe von Schraubenmuttern zwei Schlitten in beliebiger Entfernung befestigt werden können. An den Schlitten ist jeweils eine kippbar angeordnete Schelle angeschlossen, welche in beliebiger Winkellage befestigt werden kann. Diese Schellen schließen sich den in die Wirbel eingeschraubten Knochenschrauben an.Nowadays, internal fixation elements (internal fixator) are the most widely used. These are devices in which the transpedicularly inserted bone screws are connected via a parallel rod. One such device is described in the published patent application DE 36 39 810, among others. In this solution, a threaded clamping spindle or spindles is used as a parallel rod, to which two slides can be attached at any distance using screw nuts. A tiltable clamp is connected to each slide, which can be attached at any angle. These clamps are connected to the bone screws screwed into the vertebrae.
Derartige Anordnungen sichern im allgemeinen über die Zeitdauer von einem bis zwei Jahren nach der Operation eine ausreichende Befestigung, brechen jedoch in der Regel später, wenn sich innerhalb dieser Zeit keine knöcherige Überbrückung ausbildet Die Ursache dafür ist, daß die auf die Schrauben regelmäßig senkrecht wirkenden Kräfte früher oder später zum ermüdungsartigen Bruch des Gestänges führen. Deshalb war von grundsätzlicher Bedeutung, daß die Ausbildung der knöcherigen Fusion weitmöglichst gefördert wurde, was jedoch nicht immer gelang.Such arrangements generally ensure adequate fixation for a period of one to two years after the operation, but usually break later if no bony bridge develops within this time. The reason for this is that the forces acting perpendicularly on the screws lead sooner or later to fatigue-like fracture of the rods. It was therefore of fundamental importance that the development of bony fusion was promoted as much as possible, but this was not always successful.
Ein weiterer Nachteil war, daß die Spannspindel in den meisten Fällen über die Schlitten hinausragt, was oft äußerst störend wirkt; desweiteren konnte die Einstellung der Lage der Schlitten und der Schellen nur in mehreren Schritten erfolgen und in jedem einzelnen Schritt mußten mehrere verschiedene Schraubenmuttern angezogen, dann wieder gelöst und eventuell erneut angezogen werden. Das komplizierte und verlängerte die Operation bedeutend.Another disadvantage was that the clamping spindle in most cases extended beyond the slides, which was often extremely annoying; furthermore, the position of the slides and clamps could only be adjusted in several steps and in each individual step several different screw nuts had to be tightened, then loosened and possibly tightened again. This complicated and lengthened the operation considerably.
Die vorliegende Erfindung hat sich demzufolge das Ziel gesetzt, ein Implantat auszubilden, welches während der Operation die Sicherung einesThe present invention therefore aims to develop an implant which ensures the securing of a
bestimmten Abstandes zwischen den Wirbeln gegen Belastung ermöglicht, die Verschiebung der Wirbel aufeinander, insbesondere entgegen den Kräften in Pfeilrichtung verhindert, zur knöcherigen Verbindung entsprechende Voraussetzungen sichert und sowohl in operationstechnischer Hinsicht (enge S Eindringungsmöglichkeiten) als auch in Hinsicht auf die diagnostischen Anforderungen der Nachbehandlung (Durchführung der MR-Untersuchung) entsprechend ist.a certain distance between the vertebrae against load, prevents the displacement of the vertebrae against each other, in particular against the forces in the direction of the arrow, ensures appropriate conditions for the bony connection and is appropriate both in terms of surgical technique (narrow S penetration possibilities) and in terms of the diagnostic requirements of the follow-up treatment (carrying out the MR examination).
Die gestellte Aufgabe wurde mit einem Implantat gelöst, welches als Hülse mit Außengewinde ausgebildet ist, wobei an mindestens einem Ende dieser Hülse ein Mitnehmerelement, an dem Mantel dieser Hülse dagegen Öffnungen ausgebildet sind.The task was solved with an implant which is designed as a sleeve with an external thread, with a driver element being formed at at least one end of this sleeve and openings being formed on the jacket of this sleeve.
Das Außengewinde ist vorzugsweise als Trapezgewinde ausgebildet und mit einem selbstschneidenden Anschneideteil versehen. Das Mitnehmerelement kann am Anfang des Implantats als Schlüsselöffnung und/oder am Ende des Implantats als Nut ausgebildet sein.The external thread is preferably designed as a trapezoidal thread and is provided with a self-tapping cutting part. The driver element can be designed as a key opening at the beginning of the implant and/or as a groove at the end of the implant.
An dem Mantel des Implantats sind vorzugsweise einandergegenüber zwei ovale öffnungen ausgebildet und vorzugsweise weitere Bohrungen angeordnet zur Sicherung des Anschlusses an die äußere schwammartige Knochenstruktur. Das Implantat kann mit einem Verschlußstopfen versehen sein, um auf die in seinem Inneren angeordneten Knochenbruchstücke Druck ausüben zu können und damit die Möglichkeit der knöcherigen Vereinigung zu fördern. Der Verschlußstopfen ist mittels eines Gewindes mit dem Implantat verbunden.Two oval openings are preferably formed opposite one another on the shell of the implant and preferably further holes are arranged to ensure the connection to the external spongy bone structure. The implant can be provided with a closure plug in order to be able to exert pressure on the bone fragments arranged inside it and thus promote the possibility of bony union. The closure plug is connected to the implant by means of a thread.
Das Material des Implantats ist ein biokompatibles Metal! oder eine Legierung, vorzugsweise Titan.The material of the implant is a biocompatible metal or an alloy, preferably titanium.
Das Einsetzen des erfindungsgemäßen Implantats zwischen die Wirbelkörper verschließt das bisher von vorn offene fixateur interne System und bildet daraus einen stabilen belastbaren Rahmen. Somit wird auch die bei allen früheren Systemen verbleibende Mikroinstabilität ebenfalls behoben und in dem Längsgestänge kommen keine Biegekräfte auf. Das verhindert einerseits die Möglichkeit des Bruchs des ermüdenden Implantats und schafft andererseits ideale Voraussetzungen zur knöcherigen Verbindung (Überbrük-The insertion of the implant according to the invention between the vertebral bodies closes the previously open internal fixator system and forms a stable, resilient frame. This also eliminates the micro-instability that remained in all previous systems and no bending forces arise in the longitudinal rods. On the one hand, this prevents the possibility of the fatigued implant breaking and, on the other hand, creates ideal conditions for a bony connection (bridging).
kung). Die Stabilität des vor oder hinter die Kleingelenke eingesetzten Rahmensystems sichert nicht nur die Fixierung der gegebenen Zustände, sondern auch die Einhaltung der von diesen geringfügig abweichenden korrigierten Position.The stability of the frame system installed in front of or behind the small joints ensures not only the fixation of the given conditions, but also the maintenance of the corrected position that deviates slightly from these.
Der in den Hohlraum des Implantats eingesetzte Knochenspan sowie der mit Öffnungen versehene Mantel des Implantats sichern ideale Voraussetzungen zur Knochenfusion. Der in das Ende des Implantats eintreibbare Verschlußstopfen sichert nicht nur den Schutz des Wirbelkanals, sondern übt auch auf den eingesetzten Knochenspan Druck aus, wodurch die Knochen-Vereinigung beschleunigt wird.The bone chip inserted into the cavity of the implant and the implant's shell with openings ensure ideal conditions for bone fusion. The closure plug that can be driven into the end of the implant not only protects the spinal canal, but also exerts pressure on the inserted bone chip, which accelerates bone union.
Weitere Details der Erfindung werden anhand eines Ausführungsbeispiels unter Bezugnahme auf die beigefügte Zeichnung nachstehend näher beschrieben. In der Zeichnung zeigen:Further details of the invention are described in more detail below using an embodiment with reference to the accompanying drawing. In the drawing:
Fig. 1 eine Hinteransicht eines erfindungsgemäßen Implantats,
Fig. 2 eine Seitenansicht des Implantats, teilweise im Schnitt,Fig. 1 is a rear view of an implant according to the invention,
Fig. 2 a side view of the implant, partly in section,
Fig. 3 eine Vorderansicht des Implantats,
Fig. 4 eine im Verhältnis zur Fig. 2 um 90° verdrehte Ansicht des inFig. 3 a front view of the implant,
Fig. 4 is a view rotated by 90° in relation to Fig. 2 of the
Fig. 2 gezeigten Implantats,Fig. 2 shown implant,
Fig. 5 einen zum Implantat gehörenden Verschlußstopfen,
Fig. 6 eine Hinteransicht bzw. einen Querschnitt eingesetzter Implantate und
Fig. 7 eine Seitenansicht bzw. einen Querschnitt eines zwischen dieFig. 5 a closure plug belonging to the implant,
Fig. 6 a rear view or a cross section of inserted implants and
Fig. 7 is a side view or a cross section of a
Wirbel eingeschraubten Implantats.Vertebrae screwed implant.
In den Figuren 1 bis 4 ist zu sehen, daß das erfindungsgemäße Implantat 1 als eine mit einem Außengewinde 2 versehene Hülse 3 ausgebildet ist. An dem vorderen Teil der Hülse 3 ist ein konischer Bereich 4 ausgebildet, wobei das Außengewinde 2 mit einem selbstschneidenden Anschneideteil 5 versehen ist. In dem Innern des konischen Bereichs 4 ist eine Schlüsselöffnung 6 als Mitnehmerelement ausgebildet.In Figures 1 to 4 it can be seen that the implant 1 according to the invention is designed as a sleeve 3 provided with an external thread 2. A conical region 4 is formed on the front part of the sleeve 3, whereby the external thread 2 is provided with a self-tapping cutting part 5. In the interior of the conical region 4 a key opening 6 is formed as a driver element.
An dem anderen Ende der Hülse 3 sind Nuten 7 ausgebildet. Diese dienen ebenfalls als Mitnehmerelemente. In dieses Ende der Hülse 3 ist ein in den Figuren 4 und 5 dargestellter Verschlußstopfen 8 einschraubbar, welcherGrooves 7 are formed on the other end of the sleeve 3. These also serve as driver elements. A sealing plug 8 shown in Figures 4 and 5 can be screwed into this end of the sleeve 3, which
ebenfalfs mit einer Schlüsselöffnung 9 versehen ist. Die Hülse 3 und der Verschlußstopfen 8 sind über ein Schraubengewinde miteinander verbunden.is also provided with a key opening 9. The sleeve 3 and the closure plug 8 are connected to one another via a screw thread.
In dem mittleren Bereich des Implantats 1 ist der Mantel der Hülse 3 mit verschiedenen öffnungen versehen. In Durchmesserrichtung sind einander gegenüber zwei ovale Öffnungen 10 angeordnet und zwischen diesen befinden sich Bohrungen 11. In dem konischen Bereich 4 der Hülse 3 sind an dem selbstschneidenden Anschneideteil 5 Schneidekanten 12 ausgebildet, die dazu dienen, das Einschrauben des Implantats zu erleichtern.In the middle area of the implant 1, the casing of the sleeve 3 is provided with various openings. In the diameter direction, two oval openings 10 are arranged opposite each other and between them there are holes 11. In the conical area 4 of the sleeve 3, cutting edges 12 are formed on the self-tapping cutting part 5, which serve to facilitate screwing in the implant.
Das Einsetzen des erfindungsgemäßen Implantats geschieht folgenderweise: The implant according to the invention is inserted as follows:
Nach der Vorbereitung des Operationsbereichs, der Freilegung und der Sicherung der Zugänglichkeit zu den Wirbeln werden die einander benachbarten Wirbelkörper auseinandergespreizt. Dazu wird ein entsprechender Spreizschenkel verwendet, wobei bei der Spreizung die Straffheit der Gelenkbänder, die erforderlichen Korrekturen und die anatomischen Gegebenheiten zu berücksichtigen sind. Wegen der verschiedenen Wärbelabstände ist es zweckmäßig, in den verschiedenen Fällen Spreizschenkel mit voneinander abweichenden Abmessungen zu verwenden, und zwar solche, die an die Wirbelabstände und die Abmessungen der Implantate angepaßt sind.After preparing the surgical area, exposing the vertebrae and ensuring access to them, the adjacent vertebral bodies are spread apart. To do this, an appropriate spreader arm is used, taking into account the tightness of the ligaments, the necessary corrections and the anatomical conditions. Because of the different vertebral distances, it is advisable to use spreader arms with different dimensions in different cases, namely those that are adapted to the vertebral distances and the dimensions of the implants.
Zwischen die auseinandergespreizten Wirbelkörper wird eine gabelartige Führungshülse eingeführt, welche während der Operation das Einführen der verschiedenen Instrumente und des Implantats erleichtert. Dieses Mittel sichert auch die Beibehaltung der mittels des Spreizschenkels eingestellten Entfernung der Wirbelkörper und deren Position.A fork-like guide sleeve is inserted between the spread apart vertebral bodies, which facilitates the insertion of the various instruments and the implant during the operation. This device also ensures that the distance of the vertebral bodies and their position, which has been set using the spreading leg, are maintained.
Nach dem Einführen der Führungshülse wird der Spreizschenkel entfernt, dann werden für die den Wirbelmaßen entsprechenden Implantate in die Wirbel Aufnahmekanäle auf die Weise gebohrt, daß sich deren untere Hälfte in dem einen Wirbel, deren obere Hälfte dagegen in dem oberen Wirbel anordnet. Während des Einschraubens der Implantate gelangt der abgetrennte Knochenspan in den inneren Hohlraum des Implantats. Bei Erreichen einer entsprechenden Tiefe hat das Implantat in einer Lage zu sein, in welcher die an seinem hinteren Ende ausgebildeten Nuten zu den StützflächenAfter the guide sleeve has been inserted, the expansion leg is removed, then channels are drilled into the vertebrae for the implants corresponding to the vertebral dimensions in such a way that their lower half is arranged in one vertebra and their upper half in the upper vertebra. As the implants are screwed in, the separated bone chip enters the inner cavity of the implant. When a corresponding depth is reached, the implant must be in a position in which the grooves formed at its rear end are aligned with the support surfaces
-6--6-
der Wirbelkörper parallel sind.the vertebral bodies are parallel.
Nach dem Einschrauben wird der inneren Hohlraum der Implantate mitAfter screwing in, the inner cavity of the implants is filled with
Knochenbruchstücken aufgefüllt. Dazu benutzt man ein Injektionsgerät, das sich mit Hilfe von zwei Anschlußklauen an die Stirnfläche des Implantats anfügt und die unter Druck erfolgende Einführung der Knochenbruchstücke und somit die Füllung des gesamten Innenraumes ermöglicht.Bone fragments are filled in. An injection device is used for this purpose, which is attached to the front surface of the implant using two connecting claws and enables the bone fragments to be introduced under pressure, thus filling the entire interior.
Die mit den Knochenbruchstücken ausgefüllten Hohlräume des Implantats werden mit einem in den Figuren 4 und 5 dargestellten Verschlußstopfen abgeschlossen. Das Abschließen kann mit Hilfe eines in die Schlüsselöffnung eingefügten entsprechenden Schlüssels erfolgen. Somit sichert der Verschlußstopfen den Schutz des Wirbelkanals und übt auf die in dem inneren Hohlraum des Implantats befindlichen Knochenbruchstücke Druck aus, was einen schnelleren Knochenaufbau fördert.The cavities of the implant filled with bone fragments are closed with a plug as shown in Figures 4 and 5. The plug can be closed using a corresponding key inserted into the key opening. The plug thus ensures the protection of the spinal canal and exerts pressure on the bone fragments located in the inner cavity of the implant, which promotes faster bone formation.
Nach dem Einsetzen der Implantate wird die Führungshülse zwischen den Wirbeln herausgenommen und die Umgebung des Implantats zwischen den beiden Wirbelkörpem wird ebenfalls mit Knochenbruchstücken ausgefüllt, wonach der Operationsbereich abgeschlossen wird.After the implants have been inserted, the guide sleeve between the vertebrae is removed and the area around the implant between the two vertebral bodies is also filled with bone fragments, after which the surgical area is closed.
Die Figuren 6 und 7 zeigen die erfindungsgemäßen Implantate nach dem Einsetzen. Aus den Figuren ist ersichtlich, daß der äußere mit einem Gewinde versehene Teil des Implantats 1 in die schwammartige Substanz 14 der Wirbelkörper 13 eintaucht und somit ermöglicht, daß sich die in dem Innern des Implantats befindenden Knochenbruchstücke 15 unmittelbar mit der schwammartigen Substanz 14 zusammenwachsen. Das gleiche wird auch von den zwischen den Wirbelkörpem 13 angeordneten Knochenbruchstücken 16 gefördert.Figures 6 and 7 show the implants according to the invention after insertion. From the figures it can be seen that the outer part of the implant 1 provided with a thread is immersed in the spongy substance 14 of the vertebral bodies 13 and thus enables the bone fragments 15 located inside the implant to grow together directly with the spongy substance 14. The same is also promoted by the bone fragments 16 arranged between the vertebral bodies 13.
Der äußere Trapezgewindeteil des erfindungsgemäßen Implantats sichert nach dem Einsetzen eine entsprechende Entfernung zwischen den Wärbelkörpem und verhindert das relative Verschieben der Knochenkörper.The outer trapezoidal thread part of the implant according to the invention ensures after insertion an appropriate distance between the vertebral bodies and prevents the relative displacement of the bone bodies.
Ein weiterer Vorteil der erfindungsgemäßen Lösung besteht darin, daß zur Einsetzung des Implantats kein gesonderter Gewindebohrer verwendet werden muß, wodurch die Operation auf einfachere Weise durchgeführt werden kann. Das ist bei der erfindungsgemäßen Lösung deshalb von Bedeu-A further advantage of the solution according to the invention is that no separate tap has to be used to insert the implant, which means that the operation can be carried out in a simpler manner. This is therefore important in the solution according to the invention.
-7--7-
tung, weil vorkommen könnte, daß sich die Wirbelkörper nach der Anfertigung des Gewindes im Verhältnis zueinander verschieben, was das Einschrauben des Implantats erschweren oder sogar verhindern kann.tion, because it could happen that the vertebral bodies shift in relation to each other after the thread has been made, which can make it difficult or even impossible to screw in the implant.
Das Einschrauben des Implantats erfolgt mit Hilfe des an dem Vorderteil befindlichen Mitnehmerelements, somit ist die Einhaltung der Richtung bei dem Implantieren gesichert, das Implantat bohrt sich in den vorgebohrten Führungskanal gezogen durch Schrauben ein.The implant is screwed in using the driver element located on the front part, thus ensuring that the direction is maintained during implantation; the implant drills into the pre-drilled guide channel and is pulled by screws.
Von den die Knochenvereinigung fördernden Hohlräumen sind die großen ovalen öffnungen in Richtung zu den Wirbelkörpern ausgerichtet, während zwischen den Wirbelkörpem, in Richtung des vorher von der Knorpelscheibe eingenommenen Raumes kleinere Bohrungen die Verbindung mit der schwammartigen Knochensubstanz sichern. Die Knochenvereinigung wird durch die Ausfüllung des Platzes der Knorpelscheibe mit Knochenbruchstücken und durch Kompression der im Innern des Implantats befindlichen Knochenbruchstücke gefördert.Of the cavities that promote bone union, the large oval openings are directed towards the vertebral bodies, while between the vertebral bodies, in the direction of the space previously occupied by the cartilage disc, smaller holes ensure the connection with the spongy bone substance. Bone union is promoted by filling the space of the cartilage disc with bone fragments and by compressing the bone fragments located inside the implant.
Die am hinteren Ende des Implantats ausgebildeten Nuten tragen einerseits dazu bei, daß die Lage des Implantats nach dem Einsetzen überprüfbar ist und ermöglichen andererseits erforderlichenfalls auch die Änderung der Lage.The grooves formed at the rear end of the implant help to ensure that the position of the implant can be checked after insertion, and also enable the position to be changed if necessary.
Das Implantat ist vorzugsweise aus gewebefreundlichem Titan gefertigt, welches die diagnostischen Anforderungen der Nachbehandlung erfüllt, die Durchführung der MR-Untersuchung ermöglicht.The implant is preferably made of tissue-friendly titanium, which meets the diagnostic requirements of the follow-up treatment and enables the MR examination to be carried out.
Selbstverständlich stellt das gezeigte Ausführungsbeispiel nur eine vorzugsweise Variante der Erfindung dar und es ist offensichtlich, daß innerhalb des durch die beigefügten Ansprüche bestimmten Schutzumfanges noch unzählige weitere Varianten ausführbar sind.Of course, the embodiment shown represents only a preferred variant of the invention and it is obvious that countless other variants can be implemented within the scope of protection determined by the appended claims.
Claims (10)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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HU9700532A HUP9700532A1 (en) | 1997-02-28 | 1997-02-28 | Implantation for fixing of vertebra spondyls |
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DE29712331U1 true DE29712331U1 (en) | 1997-10-02 |
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DE29712331U Expired - Lifetime DE29712331U1 (en) | 1997-02-28 | 1997-07-12 | Implant for the attachment of vertebrae |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19750382A1 (en) * | 1997-11-13 | 1999-05-20 | Augustin Prof Dr Med Betz | Operative correction equipment for displaced vertebrae used in minimally invasive surgery |
DE20004692U1 (en) * | 2000-03-14 | 2001-07-26 | Sofamor Danek Gmbh | Vertebral implant for screwing into an intervertebral space |
EP1201207A1 (en) * | 2000-09-27 | 2002-05-02 | Chao-Jan Wang | Spinal implant |
WO2003009786A1 (en) * | 2001-07-24 | 2003-02-06 | Sulzer Orthopedics, Ltd. | Device for intersomatic stabilization using a mini-invasive approach |
US6562039B1 (en) | 1999-12-10 | 2003-05-13 | Chao-Jan Wang | Spinal fixation and retrieval device |
EP1609445A1 (en) * | 1999-01-11 | 2005-12-28 | SDGI Holdings, Inc. | Intervertebral spacers with side wall accessible interior cavity |
US8460380B2 (en) | 2004-02-13 | 2013-06-11 | Franz Copf, JR. | Intervertebral implant and surgical method for spondylodesis of a lumbar vertebral column |
-
1997
- 1997-02-28 HU HU9700532A patent/HUP9700532A1/en unknown
- 1997-07-12 DE DE29712331U patent/DE29712331U1/en not_active Expired - Lifetime
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19750382A1 (en) * | 1997-11-13 | 1999-05-20 | Augustin Prof Dr Med Betz | Operative correction equipment for displaced vertebrae used in minimally invasive surgery |
EP1609445A1 (en) * | 1999-01-11 | 2005-12-28 | SDGI Holdings, Inc. | Intervertebral spacers with side wall accessible interior cavity |
US7534265B1 (en) | 1999-01-11 | 2009-05-19 | Warsaw Orthopedic, Inc. | Intervertebral spacers with side wall accessible interior cavity |
US8038714B2 (en) | 1999-01-11 | 2011-10-18 | Warsaw Orthopedic, Inc. | Intervertebral spacers with side wall accessible interior cavity |
US6562039B1 (en) | 1999-12-10 | 2003-05-13 | Chao-Jan Wang | Spinal fixation and retrieval device |
DE20004692U1 (en) * | 2000-03-14 | 2001-07-26 | Sofamor Danek Gmbh | Vertebral implant for screwing into an intervertebral space |
EP1201207A1 (en) * | 2000-09-27 | 2002-05-02 | Chao-Jan Wang | Spinal implant |
WO2003009786A1 (en) * | 2001-07-24 | 2003-02-06 | Sulzer Orthopedics, Ltd. | Device for intersomatic stabilization using a mini-invasive approach |
US8460380B2 (en) | 2004-02-13 | 2013-06-11 | Franz Copf, JR. | Intervertebral implant and surgical method for spondylodesis of a lumbar vertebral column |
Also Published As
Publication number | Publication date |
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HU9700532D0 (en) | 1997-04-28 |
HUP9700532A1 (en) | 1998-12-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R207 | Utility model specification |
Effective date: 19971113 |
|
R081 | Change of applicant/patentee |
Owner name: SURGICRAFT LTD., GB Free format text: FORMER OWNER: METRIMED ORVOSI MUESZERGYARTO KFT, HODMEZOEVASARHELY, HU Effective date: 19990915 |
|
R150 | Utility model maintained after payment of first maintenance fee after three years |
Effective date: 20001211 |
|
R157 | Lapse of ip right after 6 years |
Effective date: 20040203 |