EP1509173A1 - Wirbelkörperplatzhalter - Google Patents
WirbelkörperplatzhalterInfo
- Publication number
- EP1509173A1 EP1509173A1 EP03735308A EP03735308A EP1509173A1 EP 1509173 A1 EP1509173 A1 EP 1509173A1 EP 03735308 A EP03735308 A EP 03735308A EP 03735308 A EP03735308 A EP 03735308A EP 1509173 A1 EP1509173 A1 EP 1509173A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- row
- notches
- placeholder
- vertebral body
- locking
- 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.)
- Withdrawn
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
-
- 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
- A61F2002/30113—Rounded shapes, e.g. with rounded corners circular
- A61F2002/30115—Rounded shapes, e.g. with rounded corners circular circular-O-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
- A61F2002/30108—Shapes
- A61F2002/30199—Three-dimensional shapes
- A61F2002/30224—Three-dimensional shapes cylindrical
- A61F2002/30235—Three-dimensional shapes cylindrical tubular, e.g. sleeves
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- 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
- A61F2002/30331—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
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- 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
- 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
- A61F2002/3037—Translation along the common longitudinal axis, e.g. piston
- A61F2002/30373—Translation along the common longitudinal axis, e.g. piston with additional means for preventing said translation
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- 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
- 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
- A61F2002/30433—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using additional screws, bolts, dowels, rivets or washers e.g. connecting screws
-
- 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
- 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
- A61F2002/30476—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism
- A61F2002/30487—Circumferential cooperating grooves and beads on cooperating lateral surfaces of a mainly longitudinal connection
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- 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
- A61F2002/30476—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism
- A61F2002/30507—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism using a threaded locking member, e.g. a locking screw or a set screw
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- 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
- A61F2002/30537—Special structural features of bone or joint prostheses not otherwise provided for adjustable
- A61F2002/30538—Special structural features of bone or joint prostheses not otherwise provided for adjustable for adjusting angular orientation
- A61F2002/3054—Special structural features of bone or joint prostheses not otherwise provided for adjustable for adjusting angular orientation about a connection axis or implantation axis for selecting any one of a plurality of radial orientations between two modular parts, e.g. Morse taper connections, at discrete positions, angular positions or continuous positions
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- 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
- A61F2002/30537—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
- 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
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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
- A61F2002/30535—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
- 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
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- 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
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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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- A61F2/00—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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- 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
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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
- 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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- 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
- A61F2220/0041—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using additional screws, bolts, dowels or rivets, e.g. connecting screws
-
- 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
- A61F2230/0006—Rounded shapes, e.g. with rounded corners circular
-
- 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
- A61F2230/0063—Three-dimensional shapes
- A61F2230/0069—Three-dimensional shapes cylindrical
Definitions
- the present invention relates to a vertebral body placeholder according to the features of claim 1 and a method for its assembly.
- a vertebral body placeholder with a cylindrical inner body which can be telescopically inserted into a coaxially arranged, sleeve-shaped outer body.
- this vertebral body placeholder In order to fix this vertebral body placeholder in the desired position, it can be passed through the outer body into a thread embedded in the inner body.
- the The size of this vertebral body placeholder can be adjusted gradually.
- it is very tedious for the operating doctor to set the desired size of the vertebral body placeholder and then insert this screw into the corresponding thread especially since the outer and inner bodies can easily slip together and because it requires a certain degree of tact, the fixing screw in insert the appropriate thread.
- the object of the present invention is to create a vertebral body placeholder whose overall height can be adjusted simply and reliably, in particular during the implantation.
- a vertebral body placeholder designed according to this technical teaching has the advantage that it is possible to move the respective locking lugs out of the respective locking notches and into the groove by pivoting the inner body, in order then to be able to push the inner body back and forth in the axial direction in the outer body , The locking lugs are guided along the groove without providing resistance. By pivoting the inner body back, the locking lugs are inserted again into the locking notches, so that the locking device now engages again. This makes it possible to push an inner body that has been pulled out too far into the outer body in the desired manner, or vice versa.
- Another advantage is that before the implantation of the vertebral body placeholder a rough adjustment is possible in any way without great effort, and that afterwards, for example after placing the preset vertebral body placeholder in the spine
- the locking lugs and the locking notches are arranged obliquely and preferably run downwards from the side facing the groove.
- four rows of locking lugs and four rows of locking notches are distributed equidistantly over the circumference. This has the advantage that the vertebral body placeholder is guided evenly over the circumference by these four locking devices, so that the inner body cannot tilt.
- an elongated hole arranged in the axial direction is provided in the outer body for the stepless reception of a fixing screw. This has the advantage that the fixing screw extending through the elongated hole in any desired position of the
- the outer body can be screwed relative to the inner body into a corresponding thread provided on the inner body.
- only two rows of latching noses and rows of latching notches lying opposite one another are provided. This makes it possible to pull the inner body out of the outer body without pivoting. In this case, a force would be exerted on two opposing locations on the outer body via the locking lugs, so that the outer body deforms for a short time. The areas of the outer body contract between the rows of latches, while the areas of the latch are pressed radially outward until the latch has passed the corresponding notch. The outer body then jumps back to its original shape and the vertebral body placeholder is enlarged by a notch. This process can be repeated several times until the vertebral body placeholder has the desired size.
- FIG. 1 shows an exploded view of a spine with a vertebral body placeholder according to the invention
- FIG. 2 shows an enlarged detail of the vertebral body placeholder according to FIG. 1, according to line II in FIG. 1
- FIG. 3 shows a sectional top view of an outer body of the vertebral body placeholder according to FIG. 1, cut along line III-III in FIG. 4;
- FIG. 4 shows a sectional side view of the outer body according to FIG. 3, cut along line IV-IV in FIG. 3.
- FIG. 1 shows a schematic illustration of a section of a human spine in an exploded view, in which a two-part, hollow-cylindrical vertebral body placeholder 12 is arranged between two vertebral bodies 10.
- This vertebral body placeholder 12 comprises a smaller, cylindrical inner body 14 and a larger, also cylindrical, sleeve-shaped outer body 16, the latter receiving the inner body 14 in a telescope-like manner.
- the operating physician can fix the inner body 14 and the outer body 16 in the desired position relative to one another by means of two fixing screws 18 in order to achieve an optimal position of the spine.
- An elongated hole 34 arranged in the outer body 16 enables the vertebral body placeholder 12 to be fixed in any position. Further details regarding the vertebral body placeholder 12 can be found in DE 296 16 778 / EP 832 622, to which reference is made in full at this point.
- each locking lug 22 has a substantially radially oriented stop flank 32 and a sliding flank (30), the angle between the stop and sliding flank being between 45 and 90 °.
- each row of notches 24 is composed of a plurality of notches 26 arranged one behind the other in the axial direction.
- the locking notch 26 is designed to correspond to the locking lugs 22 and also has a substantially radial aligned stop flank and a sliding flank arranged at an acute angle.
- a groove 28 is formed, the width and depth of which is somewhat larger than the corresponding rows of latches 20, so that the row of latches 20 can be accommodated in this groove 28 without obstacles.
- the locking lugs 22 and the locking notches 26 run obliquely, namely downwards from the groove 28. If one now takes into account that the vertebral body placeholder is always under load, the inner body 14 would have to be pivoted against this load in order to get back into the groove from the position once set. This is normally not possible due to the load on the vertebral body placeholder, so that reliable pivoting protection is created as a result.
- the operating doctor proceeds as follows:
- the row of latches 20 is brought out of engagement with the row of notches 24 so that the row of latches 20 enters the groove 28.
- the inner body 14 can be pushed up or down (axially) in any way in order to achieve a preliminary rough adjustment of the vertebral body placeholder 12.
- the inner body 14 is pivoted back again, so that the row of latches 20 again engages with the row of notches 24.
- the arrangement of the locking lugs 22 and locking notches 26 both abut against one another with their respective stop flanks, so that slipping of the inner body 14 into the outer body 16 is reliably prevented.
- the operating doctor can repeat this process in order to finally bring the vertebral body placeholder 12 into the desired position.
- only two rows of latches and notches are provided.
- the operating physician can now pull the inner body 14 further out of the outer body 16 after the rough adjustment for the purpose of fine adjustment.
- the respective locking lugs 22 and locking notches 26 slide against one another with their sliding flanks until the locking lug 22 jumps into the closest locking notch 26. In this way, the vertebral body placeholder 12 can be adjusted in any way without the risk of sliding back. In this position, the vertebral body placeholder 12 can be secured by the fixing screw.
Landscapes
- 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
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20207853U | 2002-05-21 | ||
DE20207853U DE20207853U1 (de) | 2002-05-21 | 2002-05-21 | Wirbelkörperplatzhalter |
PCT/DE2003/001607 WO2003096937A1 (de) | 2002-05-21 | 2003-05-19 | Wirbelkörperplatzhalter |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1509173A1 true EP1509173A1 (de) | 2005-03-02 |
Family
ID=7971323
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03735308A Withdrawn EP1509173A1 (de) | 2002-05-21 | 2003-05-19 | Wirbelkörperplatzhalter |
Country Status (5)
Country | Link |
---|---|
US (1) | US7311733B2 (de) |
EP (1) | EP1509173A1 (de) |
AU (1) | AU2003236798A1 (de) |
DE (2) | DE20207853U1 (de) |
WO (1) | WO2003096937A1 (de) |
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CA2545515C (en) | 2003-06-25 | 2012-03-27 | Baylor College Of Medicine | Tissue integration design for seamless implant fixation |
US7022138B2 (en) | 2003-07-31 | 2006-04-04 | Mashburn M Laine | Spinal interbody fusion device and method |
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WO2006050493A2 (en) * | 2004-11-03 | 2006-05-11 | The Regents Of The University Of Michigan | Biodegradable implant for intertransverse process fusion |
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US8657882B2 (en) | 2006-04-24 | 2014-02-25 | Warsaw Orthopedic, Inc. | Expandable intervertebral devices and methods of use |
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US7981157B2 (en) | 2006-04-27 | 2011-07-19 | Warsaw Orthopedic, Inc. | Self-contained expandable implant and method |
US7758648B2 (en) | 2006-04-27 | 2010-07-20 | Warsaw Orthopedic, Inc. | Stabilized, adjustable expandable implant and method |
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US8187331B2 (en) | 2006-04-27 | 2012-05-29 | Warsaw Orthopedic, Inc. | Expandable vertebral implant and methods of use |
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US7708779B2 (en) | 2006-05-01 | 2010-05-04 | Warsaw Orthopedic, Inc. | Expandable intervertebral spacers and methods of use |
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EP1878408B1 (de) | 2006-07-14 | 2012-09-12 | Biedermann Technologies GmbH & Co. KG | Abstandshalter zum EInsetzen zwischen zwei Wirbelkörper |
WO2008033457A2 (en) * | 2006-09-14 | 2008-03-20 | The University Of Toledo | Variable height vertebral body replacement implant |
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US8142441B2 (en) | 2008-10-16 | 2012-03-27 | Aesculap Implant Systems, Llc | Surgical instrument and method of use for inserting an implant between two bones |
US8591587B2 (en) | 2007-10-30 | 2013-11-26 | Aesculap Implant Systems, Llc | Vertebral body replacement device and method for use to maintain a space between two vertebral bodies within a spine |
US8241294B2 (en) | 2007-12-19 | 2012-08-14 | Depuy Spine, Inc. | Instruments for expandable corpectomy spinal fusion cage |
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DE102010047901B4 (de) | 2010-10-11 | 2019-01-10 | Heinrich Böhm | Implantat für die Wirbelsäule und Betätigungsinstrument |
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WO2000023013A1 (de) | 1998-10-15 | 2000-04-27 | Synthes Ag Chur | Teleskopierende wirbelprothese |
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-
2002
- 2002-05-21 DE DE20207853U patent/DE20207853U1/de not_active Expired - Lifetime
-
2003
- 2003-05-19 US US10/515,043 patent/US7311733B2/en not_active Expired - Lifetime
- 2003-05-19 AU AU2003236798A patent/AU2003236798A1/en not_active Abandoned
- 2003-05-19 DE DE10393091T patent/DE10393091D2/de not_active Expired - Fee Related
- 2003-05-19 WO PCT/DE2003/001607 patent/WO2003096937A1/de not_active Application Discontinuation
- 2003-05-19 EP EP03735308A patent/EP1509173A1/de not_active Withdrawn
Non-Patent Citations (1)
Title |
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See references of WO03096937A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE10393091D2 (de) | 2005-05-12 |
US7311733B2 (en) | 2007-12-25 |
WO2003096937A1 (de) | 2003-11-27 |
US20050234550A1 (en) | 2005-10-20 |
AU2003236798A1 (en) | 2003-12-02 |
DE20207853U1 (de) | 2002-10-10 |
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