US20070134623A1 - Device for regenerating, repairing, and modeling human and animal bone, especially in the jaw area for dental applications - Google Patents
Device for regenerating, repairing, and modeling human and animal bone, especially in the jaw area for dental applications Download PDFInfo
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- US20070134623A1 US20070134623A1 US11/702,259 US70225907A US2007134623A1 US 20070134623 A1 US20070134623 A1 US 20070134623A1 US 70225907 A US70225907 A US 70225907A US 2007134623 A1 US2007134623 A1 US 2007134623A1
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- bar
- bone
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- fasteners
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8033—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers
- A61B17/8038—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers the additional component being inserted in the screw head
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- A—HUMAN NECESSITIES
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- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8061—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates specially adapted for particular bones
- A61B17/8071—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates specially adapted for particular bones for the jaw
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- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8085—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with pliable or malleable elements or having a mesh-like structure, e.g. small strips
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- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
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- A61C8/0003—Not used, see subgroups
- A61C8/0004—Consolidating natural teeth
- A61C8/0006—Periodontal tissue or bone regeneration
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- A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
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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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- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8605—Heads, i.e. proximal ends projecting from bone
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- A61B90/03—Automatic limiting or abutting means, e.g. for safety
- A61B2090/037—Automatic limiting or abutting means, e.g. for safety with a frangible part, e.g. by reduced diameter
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- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
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- A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
- A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
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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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- 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
- A61F2/02—Prostheses implantable into the body
- A61F2/28—Bones
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- A61F2002/285—Fixation appliances for attaching bone substitute support means to underlying bone
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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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- 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
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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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- A61F2002/30316—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
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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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- A61F2/30771—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
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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
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- A61F2310/00011—Metals or alloys
- A61F2310/00023—Titanium or titanium-based alloys, e.g. Ti-Ni alloys
Definitions
- Ser. No. 09/394,135 is a CIP application of Ser. No. 09/113,031 filed Jul. 9, 1998.
- the present inventions relates to a device for reshaping (regenerating, reconstructing, repairing, and modeling) human and animal bones with any type of bone material, for example, synthetic bone material and bone modeling proteins (BMP), especially in the jaw area for dental applications.
- the device can be used in all areas of a human or animal skeleton, for repairing and modeling bone portions, for example, also complicated fractions with defective bone areas, whereby the device is not limited to a certain bone shape.
- the invention is based on the knowledge that the different materials employed for the regeneration of bone material, for example, a patient's own ground bone material and/or, for example Bio-Oss (trademark), is comparatively pressure-sensitive and can thus atrophy or be resorbed during the healing and building phase. Accordingly, in the known regeneration methods, for example, of the human jaw, atrophies and constrictions as well as bone loss cannot be avoided. The desired effect of a regeneration or reconstruction as complete as possible, especially in the vertical dimension, can thus practically not be achieved.
- bone replacement materials The aforementioned and other known substances which serve for regenerating and reconstructing bone, including bone blocks, are in the following referred to as bone replacement materials.
- the invention has the object to avoid the aforementioned disadvantages of atrophy, i.e., constrictions between the implant and all other bone deposits and repair locations as well as respective contour changes.
- the present invention suggests a device which is characterized by a bending-resistance bar or strip for bridging reshaping locations, i.e., regenerating, repair, and modeling locations, at the bone and which can be supported by two spaced apart implants.
- This bar or strip receives pressure forces and thus reduces substantially a pressure loading of the bone replacement materials.
- the bar distributes locally occurring forces onto larger areas in order to thus reduce specific pressure forces.
- the bar also protects and stabilizes the correlated implants.
- the bar has the advantage to secure and optionally fasten the membranes which are employed during such regeneration processes, for example, for retaining connective tissue. The membranes can be fastened by guiding the membrane across the bar so that the membrane is supported on the bar.
- the bar has two or more penetrations distributed over its length, for example, in the form of slotted holes, through which fasteners, for example, pins or screws, are guided which are secured or screwed into the implant.
- the slotted holes have the advantage that the bar can be secured at implants having non-uniform spacing between them.
- the present invention suggests pin-shaped, for example, cylindrical, implants which are polished at their exterior surface and are thus so smooth that in the implanted state they can be rotated, when applying a force, about its longitudinal axis even after having been implanted for an extended time period. Also, it is especially advantageous in this context when the implants are provided with an outer thread.
- These implants are height-adjustable by rotation and, in the case of bone reconstruction to be carried out step-wise, can be adjusted with respect to their relative vertical position by sequential steps of approximately 4 mm after an initial a build-up phase of approximately nine months. The bar connected thereto is then also raised accordingly.
- the implants can be removed or support elements for dental replacements or prostheses (crowns, bridges, etc.) or other utilitarian elements can be provided.
- FIG. 1 shows a plan view onto a longitudinal section of a bar which is suitable for regeneration of the jaw bone
- FIG. 2 shows the bar section according to FIG. 1 in a side view
- FIG. 3 shows a bar in a plan view which is slightly differently embodied as the one shown in FIG. 1 ;
- FIG. 4 shows the bar section according to FIG. 3 in a side view
- FIG. 5 shows an implant in an end view which can be used in connection with the bar of FIGS. 1-4 ;
- FIG. 6 shows a section along the line VI-VI of FIG. 3 together with an implant according to FIG. 5 ;
- FIG. 7 shows a schematically represented longitudinal section of the regeneration area of a jaw bone to be reconstructed
- FIG. 8 shows a part sectional view of the fastening element for a bar
- FIG. 9 shows a schematically represented longitudinal section of the regeneration area of a jaw bone to be reconstructed with a bar according to FIGS. 3 and 4 bent into a bridge structure
- FIG. 10 illustrates schematically a bar according to FIGS. 3 and 4 in a differently bent bridge structure
- FIG. 11 illustrates schematically a bar according to FIGS. 3 and 4 in a differently bent bridge structure.
- FIGS. 1 through 11 The present invention will now be described in detail with the aid of several specific embodiments utilizing FIGS. 1 through 11 .
- the bar 1 which is manufactured of titanium or any other suitable material, has a substantially flat design of great length extension and, when viewed in cross-section, has centrally arranged penetrations in the form of round holes 2 , preferably however slotted holes 3 (see FIG. 3 ) extending in the longitudinal direction of the bar and distributed over its length.
- the slotted holes 3 provide for an improved adaptation to imprecisely positioned implants 4 , i.e., the bar 1 can be easily positioned even if the position of the implants 4 deviates from the preset, desired location.
- the bar or strip 1 has at both edges recesses 5 and at the underside it is provided with transverse grooves 6 .
- Such reductions 5 , 6 in the cross-sectional shape allow for cutting to length and deformation of the bar 1 which is produced as a member of great length.
- the transverse grooves 6 allow easy cutting to length of the bar 1 as well as bending of the bar 1 out of the plane of the bar 1 (indicated by arrow B in FIG. 4 ).
- the notches 5 allow bending deformation in the plane of the bar 1 (indicated by arrow A in FIG. 3 ) in order to adapt the bar 1 to the jaw curvature of the patient.
- the notches 5 and the grooves 6 are thus predetermined bending locations.
- These predetermined bending locations allow a reshaping of the bar 1 according to the patient's specification, but also allow bending of the bar 1 during oral surgery and during implantation in order to properly adjust the fit of the bar 1 to the patient's jaw.
- the arrangement of the grooves 6 at the bottom side of the bar 1 is advantageous because the upper side is thus relatively smooth and will not bother the patient.
- the notches 5 and the transverse grooves 6 can also be designed as rated break points so that a required length of the bar 1 can be simply broken off and no cutting tools are required. It is also possible to provide rated break points in addition to the notches 5 and the transverse grooves 6 .
- the pin-shaped implants are comprised of, for example, titanium or any other suitable material. Within the entire central shaft area an outer thread 7 is provided. Otherwise, they are embodied so as to be very smooth or polished in order to be able to rotate the implant 4 in its operative position, i.e., when implanted about its longitudinal axis so that the implant 4 can be threaded in and out of the bone, as needed.
- the implant 4 can be designed at the upper end or head portion such that it has a hexagon socket head in order to facilitate rotation.
- the implant 4 has also a longitudinal receiving bore 8 embodied as a blind bore open at the upper end.
- the bore 8 is provided for receiving a fastener 10 with lens-shaped head 9 , for example, shaped like a screw or pin.
- the fastener 10 after removal of the bar 1 , may optionally provide in the area of the implant 4 a cover for the implant 4 , respectively, a closure element.
- the diameter of the bores 2 , respectively, the width of the slotted holes 3 is designed to match the diameter of the fastener 10 , while the diameter of the implant 4 is slightly greater than the aforementioned diameter, respectively, the aforementioned width. Accordingly, the bar 1 , after having been cut to length, can be placed according to FIG. 6 onto the implants 4 and can be secured thereat with the aid of the fasteners 10 . Since the bores 2 , respectively, slotted holes 3 widen at the upper side of the bar 1 , the lens-shaped head 9 according to FIG. 6 is countersunk in order to prevent it from projecting.
- the upper side 11 of the bar is curved, respectively, convexly designed in order to prevent in its operative position perforations of the soft tissue, respectively, of the synthetic material possibly positioned there.
- the underside 22 of the bar 1 is designed substantially planar, but optionally can also be concave.
- the bone to be regenerated or reshaped is indicated by reference numeral 13 and the reconstructed layer is indicated by reference numeral 14 .
- the initial bone contour is indicated by reference numeral 15 .
- the resulting atrophy produces a contour according to the dashed line 16 .
- a bar 1 is provided at a spacing to the area to be reconstructed, pressure loading of the reconstructed layer 14 is avoided and the reconstructed layer remains intact.
- the bar 1 is spaced from the contour 15 by the implants 4 and not only bridges the reconstructed material between the implants 4 , but also stabilizes the implants 4 .
- the presence of the bar 1 also allows possibilities for other applications in that a membrane 17 , especially for protecting the reconstructed layer 14 and for separating and retaining the connective tissue, can be provided.
- the membrane 17 covers the bar 1 and can be attached thereto by the lens-shaped head 9 whereby the fasteners 10 penetrate the membrane 17 and clamp the membrane 17 between the bar 1 and the lens-shaped head 9 .
- the membrane 17 and the bar 1 are removed.
- the notches 5 must be positioned remote from the slotted holes 3 , as can be seen in FIG. 3 , in order to prevent a width reduction (denting) of the slotted holes 3 during deformation of the straight bar 1 into the substantially U-shaped jaw-shape, respectively, a curved shape of another bone.
- the represented mechanical connection between the bar 1 and the implant 4 is advantageous, that, however, other connecting means can be used. It is important in this context that the implanted bar 1 in the area of its upper side 11 has a curvature, i.e., is rounded and thus prevents perforations of the mucus membranes or other tissues or materials, and thus also of the membrane 17 .
- the invention includes such bars 1 which already during manufacture (instead of being produced as a straight endless bar to be cut to length) have been shaped to the typical design of the bone to be treated, for example, for a jaw bone the bar has a substantially U-shaped contour in a top view.
- the inventive bar is primarily designed for bone reconstruction or regeneration of the human jaw, it can also be used at any other location within the skeleton of a human or animal, for example, for reshaping and reconstructing fractures.
- the bar 1 After treatment the bar 1 is removed. However, it is within the gist of the present invention to leave the bar 1 at the treatment location, if so desired.
- FIG. 8 has a special feature in comparison to the one of FIG. 5 .
- a fastener 10 for the bar 1 with outer thread 20 but the fastener 10 has an upwardly open blind bore 21 with inner thread 22 , penetrating the head and a portion of the shaft of the fastener.
- the blind bore 21 after mounting of the bar 1 and providing penetrations in optionally present covers (mucous membrane), receives preferably threadable fastening devices for prostheses, bridges or other dental chewing aids and/or cosmetic devices and/or reconstructive devices positioned external to or above the skin.
- the attachment may be temporary or permanent.
- This additional attachment function of the fastener 10 has the advantage that, for example, in reconstructive oral (jaw) surgery the patient who is generally without teeth will be able to chew again. In any case, it is at least possible to realize cosmetic purposes.
- the fastening devices which are not disclosed in any detail, can be of any desired kind and, for example, may be conical pins. A threaded embodiment is not a requirement.
- FIG. 9 shows a shaped bar 1 that is bent into a bridge structure with a raised bridge portion 23 , 24 and fastened to the jaw by fastening means, such as screws 26 or implants or bone nails, extending through penetrations provided at the end portions 25 of the shaped bar 1 resting on the bone 13 .
- the fastening means are screws 26 penetrating a penetration in the form of a respective slotted hole 3 .
- the spacing to the bone 13 is thus provided by the slanted lateral portions 24 of the raised bridge portion of the bent bar 1 , whereby the central area 23 of the raised bridge portion of the bar 1 extends substantially parallel to the bone 13 .
- the portions 23 , 24 , 25 are straight. However, it is also possible to curve each portion 23 , 24 , 25 slightly or to angle the individual portions 23 , 24 , 25 .
- the bending locations are the grooves 6 at the underside of the bar 1 .
- FIG. 9 shows a bar according to FIGS. 3, 4 .
- the bar 1 can also be designed without notches, grooves or slotted holes and can be preshaped into the desired bridge structure. Since the raised bridge potion must be connected to implants 4 , slotted holes 3 are not required.
- FIGS. 10 and 11 show variations of the embodiment of FIG. 9 .
- FIG. 10 shows a reduced angel between the portions 25 and 24 , respectively, 24 and 23 in comparison to FIG. 9 .
- FIG. 11 shows a substantially continuous bending of the bar from one end portion 25 to the other end portion 25 so that the lateral portions 24 and the central portion 23 are no longer discernable.
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Surgery (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Neurology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Epidemiology (AREA)
- Dentistry (AREA)
- Transplantation (AREA)
- Cardiology (AREA)
- Vascular Medicine (AREA)
- Developmental Biology & Embryology (AREA)
- Prostheses (AREA)
Abstract
A device for reshaping human or animal bone with bone replacement material includes at least two spaced apart implants and a bar connected to the at least two spaced apart implants and bridging at least one reshaping location. The bar has notches at the longitudinal sides and transverse grooves at the underside. The bar has slotted holes extending in the longitudinal direction of the bar for receiving the implants, respectively, fasteners of the implants.
Description
- This is a divisional application of Ser. No. 09/394,135 filed Sep. 10, 1999 and now allowed. Ser. No. 09/394,135 is a CIP application of Ser. No. 09/113,031 filed Jul. 9, 1998.
- The present inventions relates to a device for reshaping (regenerating, reconstructing, repairing, and modeling) human and animal bones with any type of bone material, for example, synthetic bone material and bone modeling proteins (BMP), especially in the jaw area for dental applications. Accordingly, the device can be used in all areas of a human or animal skeleton, for repairing and modeling bone portions, for example, also complicated fractions with defective bone areas, whereby the device is not limited to a certain bone shape.
- The invention is based on the knowledge that the different materials employed for the regeneration of bone material, for example, a patient's own ground bone material and/or, for example Bio-Oss (trademark), is comparatively pressure-sensitive and can thus atrophy or be resorbed during the healing and building phase. Accordingly, in the known regeneration methods, for example, of the human jaw, atrophies and constrictions as well as bone loss cannot be avoided. The desired effect of a regeneration or reconstruction as complete as possible, especially in the vertical dimension, can thus practically not be achieved.
- The aforementioned and other known substances which serve for regenerating and reconstructing bone, including bone blocks, are in the following referred to as bone replacement materials.
- The invention has the object to avoid the aforementioned disadvantages of atrophy, i.e., constrictions between the implant and all other bone deposits and repair locations as well as respective contour changes.
- The present invention suggests a device which is characterized by a bending-resistance bar or strip for bridging reshaping locations, i.e., regenerating, repair, and modeling locations, at the bone and which can be supported by two spaced apart implants. This bar or strip receives pressure forces and thus reduces substantially a pressure loading of the bone replacement materials. Furthermore, the bar distributes locally occurring forces onto larger areas in order to thus reduce specific pressure forces. At the same time, the bar also protects and stabilizes the correlated implants. Also, the bar has the advantage to secure and optionally fasten the membranes which are employed during such regeneration processes, for example, for retaining connective tissue. The membranes can be fastened by guiding the membrane across the bar so that the membrane is supported on the bar.
- Expediently, the bar has two or more penetrations distributed over its length, for example, in the form of slotted holes, through which fasteners, for example, pins or screws, are guided which are secured or screwed into the implant. The slotted holes have the advantage that the bar can be secured at implants having non-uniform spacing between them.
- While known implants for the dental jaw area are provided with roughened surfaces, depressions, or penetrations, the present invention suggests pin-shaped, for example, cylindrical, implants which are polished at their exterior surface and are thus so smooth that in the implanted state they can be rotated, when applying a force, about its longitudinal axis even after having been implanted for an extended time period. Also, it is especially advantageous in this context when the implants are provided with an outer thread. These implants are height-adjustable by rotation and, in the case of bone reconstruction to be carried out step-wise, can be adjusted with respect to their relative vertical position by sequential steps of approximately 4 mm after an initial a build-up phase of approximately nine months. The bar connected thereto is then also raised accordingly.
- After regeneration, the implants can be removed or support elements for dental replacements or prostheses (crowns, bridges, etc.) or other utilitarian elements can be provided.
- The object and advantages of the present invention will appear more clearly from the following specification in conjunction with the accompanying drawings, in which:
-
FIG. 1 shows a plan view onto a longitudinal section of a bar which is suitable for regeneration of the jaw bone; -
FIG. 2 shows the bar section according toFIG. 1 in a side view; -
FIG. 3 shows a bar in a plan view which is slightly differently embodied as the one shown inFIG. 1 ; -
FIG. 4 shows the bar section according toFIG. 3 in a side view; -
FIG. 5 shows an implant in an end view which can be used in connection with the bar ofFIGS. 1-4 ; -
FIG. 6 shows a section along the line VI-VI ofFIG. 3 together with an implant according toFIG. 5 ; -
FIG. 7 shows a schematically represented longitudinal section of the regeneration area of a jaw bone to be reconstructed; -
FIG. 8 shows a part sectional view of the fastening element for a bar; -
FIG. 9 shows a schematically represented longitudinal section of the regeneration area of a jaw bone to be reconstructed with a bar according toFIGS. 3 and 4 bent into a bridge structure; -
FIG. 10 illustrates schematically a bar according toFIGS. 3 and 4 in a differently bent bridge structure; and -
FIG. 11 illustrates schematically a bar according toFIGS. 3 and 4 in a differently bent bridge structure. - The present invention will now be described in detail with the aid of several specific embodiments utilizing
FIGS. 1 through 11 . - The
bar 1, which is manufactured of titanium or any other suitable material, has a substantially flat design of great length extension and, when viewed in cross-section, has centrally arranged penetrations in the form ofround holes 2, preferably however slotted holes 3 (seeFIG. 3 ) extending in the longitudinal direction of the bar and distributed over its length. The slottedholes 3 provide for an improved adaptation to imprecisely positionedimplants 4, i.e., thebar 1 can be easily positioned even if the position of theimplants 4 deviates from the preset, desired location. - The bar or
strip 1 has at both edges recesses 5 and at the underside it is provided withtransverse grooves 6.Such reductions bar 1 which is produced as a member of great length. Thetransverse grooves 6 allow easy cutting to length of thebar 1 as well as bending of thebar 1 out of the plane of the bar 1 (indicated by arrow B inFIG. 4 ). Thenotches 5 allow bending deformation in the plane of the bar 1 (indicated by arrow A inFIG. 3 ) in order to adapt thebar 1 to the jaw curvature of the patient. Thenotches 5 and thegrooves 6 are thus predetermined bending locations. These predetermined bending locations allow a reshaping of thebar 1 according to the patient's specification, but also allow bending of thebar 1 during oral surgery and during implantation in order to properly adjust the fit of thebar 1 to the patient's jaw. The arrangement of thegrooves 6 at the bottom side of thebar 1 is advantageous because the upper side is thus relatively smooth and will not bother the patient. - The
notches 5 and thetransverse grooves 6 can also be designed as rated break points so that a required length of thebar 1 can be simply broken off and no cutting tools are required. It is also possible to provide rated break points in addition to thenotches 5 and thetransverse grooves 6. - The pin-shaped implants are comprised of, for example, titanium or any other suitable material. Within the entire central shaft area an outer thread 7 is provided. Otherwise, they are embodied so as to be very smooth or polished in order to be able to rotate the
implant 4 in its operative position, i.e., when implanted about its longitudinal axis so that theimplant 4 can be threaded in and out of the bone, as needed. For this purpose, theimplant 4 can be designed at the upper end or head portion such that it has a hexagon socket head in order to facilitate rotation. Theimplant 4 has also a longitudinal receiving bore 8 embodied as a blind bore open at the upper end. The bore 8 is provided for receiving afastener 10 with lens-shaped head 9, for example, shaped like a screw or pin. Thefastener 10, after removal of thebar 1, may optionally provide in the area of the implant 4 a cover for theimplant 4, respectively, a closure element. - The diameter of the
bores 2, respectively, the width of the slottedholes 3 is designed to match the diameter of thefastener 10, while the diameter of theimplant 4 is slightly greater than the aforementioned diameter, respectively, the aforementioned width. Accordingly, thebar 1, after having been cut to length, can be placed according toFIG. 6 onto theimplants 4 and can be secured thereat with the aid of thefasteners 10. Since thebores 2, respectively, slottedholes 3 widen at the upper side of thebar 1, the lens-shaped head 9 according toFIG. 6 is countersunk in order to prevent it from projecting. - As can be seen in
FIG. 6 , theupper side 11 of the bar is curved, respectively, convexly designed in order to prevent in its operative position perforations of the soft tissue, respectively, of the synthetic material possibly positioned there. The underside 22 of thebar 1 is designed substantially planar, but optionally can also be concave. - In
FIG. 7 , the bone to be regenerated or reshaped is indicated byreference numeral 13 and the reconstructed layer is indicated byreference numeral 14. The initial bone contour is indicated byreference numeral 15. - When it is assumed that a plurality of
implants 4 is arranged in the reconstructedarea 14, but without thebar 1 and without the special design of the implants according toFIG. 5 , and when employing a conventional free comb-shaped bone transplant, the resulting atrophy produces a contour according to the dashedline 16. When, instead, according toFIG. 7 , abar 1 is provided at a spacing to the area to be reconstructed, pressure loading of the reconstructedlayer 14 is avoided and the reconstructed layer remains intact. Thebar 1 is spaced from thecontour 15 by theimplants 4 and not only bridges the reconstructed material between theimplants 4, but also stabilizes theimplants 4. - The presence of the
bar 1 also allows possibilities for other applications in that amembrane 17, especially for protecting the reconstructedlayer 14 and for separating and retaining the connective tissue, can be provided. Themembrane 17 covers thebar 1 and can be attached thereto by the lens-shapedhead 9 whereby thefasteners 10 penetrate themembrane 17 and clamp themembrane 17 between thebar 1 and the lens-shapedhead 9. - After completion of the desired reshaping (regeneration and/or apposition), the
membrane 17 and thebar 1 are removed. - It should be noted that the
notches 5 must be positioned remote from the slottedholes 3, as can be seen inFIG. 3 , in order to prevent a width reduction (denting) of the slottedholes 3 during deformation of thestraight bar 1 into the substantially U-shaped jaw-shape, respectively, a curved shape of another bone. - It should also be noted that the represented mechanical connection between the
bar 1 and theimplant 4 is advantageous, that, however, other connecting means can be used. It is important in this context that the implantedbar 1 in the area of itsupper side 11 has a curvature, i.e., is rounded and thus prevents perforations of the mucus membranes or other tissues or materials, and thus also of themembrane 17. - It should further be noted that the invention includes
such bars 1 which already during manufacture (instead of being produced as a straight endless bar to be cut to length) have been shaped to the typical design of the bone to be treated, for example, for a jaw bone the bar has a substantially U-shaped contour in a top view. - Even though the disclosed invention, respectively, the inventive bar is primarily designed for bone reconstruction or regeneration of the human jaw, it can also be used at any other location within the skeleton of a human or animal, for example, for reshaping and reconstructing fractures.
- After treatment the
bar 1 is removed. However, it is within the gist of the present invention to leave thebar 1 at the treatment location, if so desired. - The embodiment of
FIG. 8 has a special feature in comparison to the one ofFIG. 5 . InFIG. 8 there is also shown afastener 10 for thebar 1 withouter thread 20, but thefastener 10 has an upwardly open blind bore 21 with inner thread 22, penetrating the head and a portion of the shaft of the fastener. The blind bore 21, after mounting of thebar 1 and providing penetrations in optionally present covers (mucous membrane), receives preferably threadable fastening devices for prostheses, bridges or other dental chewing aids and/or cosmetic devices and/or reconstructive devices positioned external to or above the skin. The attachment may be temporary or permanent. This additional attachment function of thefastener 10 has the advantage that, for example, in reconstructive oral (jaw) surgery the patient who is generally without teeth will be able to chew again. In any case, it is at least possible to realize cosmetic purposes. The fastening devices, which are not disclosed in any detail, can be of any desired kind and, for example, may be conical pins. A threaded embodiment is not a requirement. -
FIG. 9 shows a shapedbar 1 that is bent into a bridge structure with a raisedbridge portion screws 26 or implants or bone nails, extending through penetrations provided at theend portions 25 of the shapedbar 1 resting on thebone 13. In the shown embodiment, the fastening means arescrews 26 penetrating a penetration in the form of a respective slottedhole 3. The spacing to thebone 13 is thus provided by the slantedlateral portions 24 of the raised bridge portion of thebent bar 1, whereby thecentral area 23 of the raised bridge portion of thebar 1 extends substantially parallel to thebone 13. In the shown embodiment, theportions portion individual portions grooves 6 at the underside of thebar 1. -
FIG. 9 shows a bar according toFIGS. 3, 4 . However, thebar 1 can also be designed without notches, grooves or slotted holes and can be preshaped into the desired bridge structure. Since the raised bridge potion must be connected toimplants 4, slottedholes 3 are not required. -
FIGS. 10 and 11 show variations of the embodiment ofFIG. 9 .FIG. 10 shows a reduced angel between theportions FIG. 9 .FIG. 11 shows a substantially continuous bending of the bar from oneend portion 25 to theother end portion 25 so that thelateral portions 24 and thecentral portion 23 are no longer discernable. - The specification incorporates by reference the disclosure of German priority document 197 29 222.4 of 9 Jul. 1997 and 198 03 628.0 of February 1998.
- The present invention is, of course, in no way restricted to the specific disclosure of the specification and drawings, but also encompasses any modifications within the scope of the appended claims.
Claims (34)
1-7. (canceled)
8. A device for reshaping human or animal bone with bone replacement material, said device comprising:
at least two spaced apart implants adapted to be implanted in the bone so as to project by a projecting height from the bone and having a support surface facing away from the bone;
a bending-resistant bar placed onto said support surfaces to bridge at least one reshaping location filled with bone replacement material during bone regeneration;
fasteners penetration said bar and engaging said implants to clamp said bar a t said supporting surface of said implants.
9. A device according to claim 8 , wherein said bar has at least two penetrations distributed in a longitudinal direction of said bar and wherein said at least two spaced apart implants engage said penetrations.
10. A device according to claim 8 , wherein said at least two spaced apart implants consist of titanium.
11. A device according to claim 8 , wherein said penetrations are slotted holes extending lengthwise in said longitudinal direction.
12. A device according to claim 8 , wherein said bar has a flat cross-section.
13. A device according to claim 8 , wherein an upper side of said bar is convex.
14. A device according to claim 8 , wherein said bar has areas of reduced cross-sectional size defining bending locations for bending said bar.
15. A device according to claim 14 , wherein said bending locations are located at lateral edges of said bar remote from said penetrations or at an underside of said bar.
16. A device according to claim 14 , wherein said bending locations are break-off locations.
17. A device according to claim 8 , wherein said implants are pin-shaped and have a smooth mantle surface so that said implants are rotatable about a longitudinal axis when implanted.
18. A device according to claim 8 , wherein said implants have an outer thread for position-adjustment in the bone.
19. A device according to claim 8 , wherein said fasteners are located at a head portion of said implants.
20. A device according to claim 19 , wherein said fasteners are nail-shaped or screw-shaped elements and wherein said implants have receiving bores into which said fasteners are inserted.
21. A device according to claim 19 , wherein said fasteners secure a membrane on said bar.
22. A device according to claim 8 , wherein said implants are adapted to secure dental replacements thereat.
23. A device according to claim 8 , wherein said fasteners have a head countersunk into an outer cross-sectional area of said bar.
24. A device according to claim 8 , wherein said bar is designed to support a membrane or the periosteum of the bone, wherein the membrane or the periosteum retain the connective tissue and cover the reshaping location.
25. A device according to claim 8 , wherein an underside of said bar is concave.
26. A device according to claim 8 , wherein said fasteners are adapted to secure permanently or temporarily at least one of a dental prosthesis, a cosmetic device and a reconstructive device positioned external to the skin.
27. A device according to claim 26 , wherein said fasteners are screws or pins having longitudinal bores accessible from a head portion of said fasteners.
28. A device according to claim 27 , wherein said wherein said longitudinal bores have an inner thread.
29. A device according to claim 27 , wherein said longitudinal bores are blind bores.
30. A pin-shaped implant for securing a bar, said implant adapted to be implanted in the bone so as to project by a projecting height from the bone and having a support surface facing away from the bone when said 8implant is implanted, said support surface adapted to support the bar, said implant having a smooth mantle surface so that said implant can be rotated about a longitudinal axis when implanted in order to allow height adjustment of said implant relative to the bone.
31. An implant according to claim 30 , wherein said mantle surface has an outer thread for height-adjustment relative to the bone.
32. An implant according to claim 31 , comprising a fastener penetrating the bar for fastening the bar to said implant and optionally a membrane placed on the bar.
33. An implant according to claim 32 , wherein said fastener is a nail-shaped or screw-shaped element and wherein said implant has a receiving opening into which said fastener is inserted.
34. An implant according to claim 33 , wherein said fastener has a head countersunk into an outer cross-sectional area of the bar.
35. An implant according to claim 33 , wherein said fastener serves to secure permanently or temporarily at least one of a dental prosthesis, a cosmetic device and a reconstructive device after completion of reshaping.
36. An implant according to claim 33 , wherein said fastener is a crew or a pin having a longitudinal bore accessible from a head portion of said fastener.
37. An implant according to claim 36 , wherein said longitudinal bore has an inner thread.
38. An implant according to claim 37 , wherein said longitudinal bore is a blind bore.
39. An implant according to claim 36 for securing dental replacements thereat.
40. canceled
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/702,259 US20070134623A1 (en) | 1997-07-09 | 2007-02-05 | Device for regenerating, repairing, and modeling human and animal bone, especially in the jaw area for dental applications |
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19729222 | 1997-07-09 | ||
DE19729222.4 | 1997-07-09 | ||
DE19803628A DE19803628A1 (en) | 1997-07-09 | 1998-02-01 | Device for the regeneration, repair and modeling of human and animal bones, especially in the dental jaw area |
DE19803628.0 | 1998-02-01 | ||
US11303198A | 1998-07-09 | 1998-07-09 | |
US09/394,135 US7172422B1 (en) | 1997-07-09 | 1999-09-10 | Device for regenerating, repairing, and modeling human and animal bone, especially the jaw area for dental applications |
US11/702,259 US20070134623A1 (en) | 1997-07-09 | 2007-02-05 | Device for regenerating, repairing, and modeling human and animal bone, especially in the jaw area for dental applications |
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US09/394,135 Division US7172422B1 (en) | 1997-07-09 | 1999-09-10 | Device for regenerating, repairing, and modeling human and animal bone, especially the jaw area for dental applications |
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US11/702,259 Abandoned US20070134623A1 (en) | 1997-07-09 | 2007-02-05 | Device for regenerating, repairing, and modeling human and animal bone, especially in the jaw area for dental applications |
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US09/394,135 Expired - Fee Related US7172422B1 (en) | 1997-07-09 | 1999-09-10 | Device for regenerating, repairing, and modeling human and animal bone, especially the jaw area for dental applications |
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- 1999-09-10 US US09/394,135 patent/US7172422B1/en not_active Expired - Fee Related
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Cited By (14)
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US9750549B2 (en) | 2007-11-02 | 2017-09-05 | Biomet C.V. | Plate benders for bone plates |
EP2397090A1 (en) * | 2007-11-02 | 2011-12-21 | DePuy Products, Inc. | Elbow fracture fixation system |
EP2397091A1 (en) * | 2007-11-02 | 2011-12-21 | DePuy Products, Inc. | Elbow fracture fixation system |
EP2397092A1 (en) * | 2007-11-02 | 2011-12-21 | DePuy Products, Inc. | Elbow fracture fixation system |
US20120189985A1 (en) * | 2009-09-23 | 2012-07-26 | Iglesias Rines De Freitas | 3-plans articulated bar to use in dental implants |
JP2018083086A (en) * | 2012-01-23 | 2018-05-31 | シンセス・ゲーエムベーハーSynthes GmbH | Device and method for normalizing implant strain read value to assess bone healing |
US10675069B2 (en) | 2012-01-23 | 2020-06-09 | DePuy Synthes Products, Inc. | Device and method for normalizing implant strain readings to assess bone healing |
US11622798B2 (en) | 2012-01-23 | 2023-04-11 | DePuy Synthes Products, Inc. | Device and method for normalizing implant strain readings to assess bone healing |
JP2014223173A (en) * | 2013-05-16 | 2014-12-04 | 株式会社ジーシー | Frame for dental prosthesis using implant fixture |
US20150125818A1 (en) * | 2013-11-01 | 2015-05-07 | Medintal Ltd. | Sub-periosteal extension for a dental implant |
US9782240B2 (en) * | 2013-11-01 | 2017-10-10 | Medintal Ltd. | Sub-periosteal extension for a dental implant |
CN106232054A (en) * | 2014-04-15 | 2016-12-14 | 迪特马尔·松莱特纳 | Dental implant system |
CN106232054B (en) * | 2014-04-15 | 2021-03-09 | 迪特马尔·松莱特纳 | Dental implant system |
US11540865B2 (en) * | 2014-04-17 | 2023-01-03 | Zimmer Biomet CMF and Thoracic, LLC | Contourable plate |
Also Published As
Publication number | Publication date |
---|---|
DE59813877D1 (en) | 2007-03-08 |
US7172422B1 (en) | 2007-02-06 |
DE19803628A1 (en) | 1999-01-14 |
EP0890345A1 (en) | 1999-01-13 |
EP0890345B1 (en) | 2007-01-17 |
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Legal Events
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