CA2499176A1 - Cervical vertebra plate - Google Patents
Cervical vertebra plate Download PDFInfo
- Publication number
- CA2499176A1 CA2499176A1 CA002499176A CA2499176A CA2499176A1 CA 2499176 A1 CA2499176 A1 CA 2499176A1 CA 002499176 A CA002499176 A CA 002499176A CA 2499176 A CA2499176 A CA 2499176A CA 2499176 A1 CA2499176 A1 CA 2499176A1
- Authority
- CA
- Canada
- Prior art keywords
- fluting
- grooves
- cervical vertebra
- screw
- bone
- 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.)
- Abandoned
Links
Classifications
-
- 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
- A61B17/84—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
-
- 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
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7059—Cortical plates
-
- 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
- A61B17/8052—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded
-
- 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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B2017/8655—Pins or screws or threaded wires; nuts therefor with special features for locking in the bone
Abstract
The invention relates to a cervical vertebra plate (10) for osteosynthesis, comprising two receiving openings for the screw heads (18) of bone screws (16) in order to secure the cervical vertebra plate to two cervical vertebrae. The receiving openings comprise grooves (22) in the distal region on the periphery thereof and the depth of said grooves increases from a proximal to a distal end. The invention also relates to a bone screw (18) comprising a screw head (16) and a screw shank. The screw head comprises grooves (34) on the outer periphery thereof and the depth of the grooves varies along the length thereof.
Description
Cervical Vertebra Plate s Description The invention concerns a cervical vertebra plate for osteosynthesis, having at least two receiving openings for the screw heads of bone screws to secure the cervical vertebra plate to two cervical io vertebrae, wherein the receiving openings have a fluting, in particular a longitudinal fluting, in the distal region about the periphery thereof. The invention also concerns a bone screw, in particular, for a cervical vertebra plate of this type, comprising a screw head and a threaded screw shank, wherein the outer periphery is of the screw head has a fluting, in particular, a longitudinal fluting.
Bone plates are known per se, e.g. from DE 199 50 270 Al. Bone plates of this type are e.g. secured to vertebrae to orient and zo stabilize them. Towards this end, the individual bone plates are connected via rods, wherein the rods are mounted, in particular clamped, to the bone plates.
Bone screws are used to secure the bone plates to vertebrae. The 2s screws penetrate through the bone plates and are screwed into the vertebra. The bone plate is usually held via the screw head.
US 5,275,601 also discloses a bone screw which is supported with its fluted conical screw head in a receiving opening of a plate. The 3o plate is secured to the bone via these screws.
It is the underlying purpose of both of these bone plates to optimally adopt the forces acting on the bone such that they are either transferred to a neighboring bone or bone part or to 3s correction or fixation rods. Towards this end, the screw head must in any case be optimally supported in the receiving opening of the bone plate to prevent play between the screw head and receiving opening. Securing to prevent inadvertent unscrewing is effected by the fluting provided on the inner periphery of the receiving opening and/or the outer periphery of the screw head.
It is the underlying purpose of the present invention to introduce a s system which provides a safer, tight connection, i.e. optimum support of the outer peripheral surface of the screw head on the inner peripheral surface of the receiving opening of the bone plate.
This object is achieved in accordance with the invention with a to cervical vertebra plate of the above-mentioned type in that the depth of the fluting increases from a proximal to a distal end.
The inventive cervical vertebra plate also has a fluting on the inner periphery of the receiving opening. However, the depth of the is fluting is not constant but increases in the distal direction. The fluting may extend over the entire length of the receiving opening.
This is, however, not absolutely necessary. In the inventive cervical vertebra plate, the screw head is advantageously positively supported on the proximal side of the receiving opening over a large zo urea of the inner peripheral surface. This region of positive support gradually decreases in a distal direction. The tight support of the screw head in the proximal area ensures that the bone plate is optimally and positively held in the direct vicii~ity of the bone by the bone screw. The forces exerted on the bone are thereby as introduced into the bone plate directly at the bone surface via the bone screw, i.e. via the screw head. This is advantageous in that no bending moments act on the screw and the screw may therefore be smaller in size as is particularly important in the region of cervical vertebrae, since these vertebrae are small and prevent use ao of large implants:
To improve the seat of the bone screw, in particular its positive locking, the receiving openings in the cervical vertebra plate widen in a distal direction. The receiving openings are advantageously as conical or dome-shaped. The screw head may thereby be sunk in the cervical vertebra plate to positively abut the inner peripheral surface of the receiving opening when the screw is tightened.
Bone plates are known per se, e.g. from DE 199 50 270 Al. Bone plates of this type are e.g. secured to vertebrae to orient and zo stabilize them. Towards this end, the individual bone plates are connected via rods, wherein the rods are mounted, in particular clamped, to the bone plates.
Bone screws are used to secure the bone plates to vertebrae. The 2s screws penetrate through the bone plates and are screwed into the vertebra. The bone plate is usually held via the screw head.
US 5,275,601 also discloses a bone screw which is supported with its fluted conical screw head in a receiving opening of a plate. The 3o plate is secured to the bone via these screws.
It is the underlying purpose of both of these bone plates to optimally adopt the forces acting on the bone such that they are either transferred to a neighboring bone or bone part or to 3s correction or fixation rods. Towards this end, the screw head must in any case be optimally supported in the receiving opening of the bone plate to prevent play between the screw head and receiving opening. Securing to prevent inadvertent unscrewing is effected by the fluting provided on the inner periphery of the receiving opening and/or the outer periphery of the screw head.
It is the underlying purpose of the present invention to introduce a s system which provides a safer, tight connection, i.e. optimum support of the outer peripheral surface of the screw head on the inner peripheral surface of the receiving opening of the bone plate.
This object is achieved in accordance with the invention with a to cervical vertebra plate of the above-mentioned type in that the depth of the fluting increases from a proximal to a distal end.
The inventive cervical vertebra plate also has a fluting on the inner periphery of the receiving opening. However, the depth of the is fluting is not constant but increases in the distal direction. The fluting may extend over the entire length of the receiving opening.
This is, however, not absolutely necessary. In the inventive cervical vertebra plate, the screw head is advantageously positively supported on the proximal side of the receiving opening over a large zo urea of the inner peripheral surface. This region of positive support gradually decreases in a distal direction. The tight support of the screw head in the proximal area ensures that the bone plate is optimally and positively held in the direct vicii~ity of the bone by the bone screw. The forces exerted on the bone are thereby as introduced into the bone plate directly at the bone surface via the bone screw, i.e. via the screw head. This is advantageous in that no bending moments act on the screw and the screw may therefore be smaller in size as is particularly important in the region of cervical vertebrae, since these vertebrae are small and prevent use ao of large implants:
To improve the seat of the bone screw, in particular its positive locking, the receiving openings in the cervical vertebra plate widen in a distal direction. The receiving openings are advantageously as conical or dome-shaped. The screw head may thereby be sunk in the cervical vertebra plate to positively abut the inner peripheral surface of the receiving opening when the screw is tightened.
The fluting is preferably wedge-shaped. The conical flanks which face the inner space of the receiving opening, can thereby advantageously dig into the outer surface of the screw head or hook to the screw head, to provide protection against unscrewing.
In a preferred embodiment, the cervical vertebra plate has four receiving openings which are located in the corner regions of the cervical vertebra plate. In this manner, two neighboring cervical vertebrae can be secured to the cervical vertebra plate using two io bone screws each. This permits transfer of tensile and compression forces and also of torsion and shearing forces.
In a further development, a further receiving opening is provided in the center of the cervical vertebra plate. A bone screw may be is screwed into this further central receiving opening, in particular if the vertebrae are incomplete or difficult to access, to provide a further possibility of connecting this vertebra to the cervical vertebra plate.
zo The above-mentioned object is also achieved in accordance with the invention with a bone screw of the above-mentioned type in that the fluting has a varying depth along its length.
In this manner, the supporting region on the outer peripheral as surface of the screw head, with which the screw head positively abuts the inner peripheral surface of the receiving opening is enlarged as is the case for the inner peripheral surface of the receiving opening of the cervical vertebra plate. Optimum, secure force transfer between the vertebra and the cervical vertebra plate ao is thereby also facilitated by the bone screw.
In a further development, the screw head is substantially a truncated cone and the depth of the fluting increases from the proximal to the distal end. This is advantageous in that the as supporting area, i.e. the area of the screw head which positively abuts the inner peripheral surface of the receiving opening is located in the proximal area. In this fashion, the forces are introduced from the vertebra into the cervical vertebra plate directly at the vertebra surface, as was mentioned above. The vertebra is supported without substantial bending forces acting on the bone screw, which allows the bone screw to be relatively small in size.
s In another embodiment, the screw head is substantially spherical and the depth of the fluting increases from the poles in the direction of the equator, in each case. The individual sections of the fluting substantially have the shape of a spherical segment such that the screw head has large supporting surfaces in the distal area and also io in the proximal area.
The longitudinal fluting is preferably formed by wedge-shaped, substantially longitudinal grooves with the individual grooves being separated from each other. As viewed in the peripheral direction, is there are smooth sections between the fluting. These areas without grooves also provide positive abutment of the screw head on the inner peripheral surface of the receiving opening of the cervical vertebra plate, to facilitate screwing of the screw. Screwing of the screw is not impaired by the fluting on the inner peripheral surface zo of the receiving opening or on the outer peripheral surface of the screw head, and the supporting area is also enlarged.
The length of the area without grooves, viewed in the peripheral direction, preferably corresponds to 0.3 and 2.0, in particular zs between 0 . 5 and 1. 0 times the length of the grooves themselves . In case of smaller or narrower areas without grooves, the screw head may bend more easily during screwing or directly before screwing is terminated to hook with the grooves or with the fluting in the receiving opening of the cervical vertebra plate and thereby be 3o secured against unscrewing. If there are large regions without grooves, the screw head has relatively large abutment surfaces to assure optimum force transmission.
Further advantages, features and details of the invention can be as extracted from the following detailed description of preferred embodiments with reference to the drawings. The features shown in the drawing, and mentioned in the description and the claims may be essential to the invention either individually or in arbitrary combination.
Fig. 1 shows a perspective view of a cervical vertebra plate with inserted bone screws;
s Fig. 2 shows an enlarged illustration of a corner area of the cervical: vertebra plate showing a receiving opening;
Fig. 3 shows a perspective view of a first bone screw; and io Fig. 4 shows a perspective view of a second bone screw.
Fig. 1 shows a cervical vertebra plate which is designated in total by 10 and has a substantially H-shape. The corner regions 12 have receiving openings 14 (Fig. 2) which receive screw heads 16 (see is also Fig. 3 and 4) of bone screws 18. The cervical vertebra plate 10 has a further receiving opening in its center which bears a further bone screw 18.
The cervical vertebra plate 10 connects two cervical vertebrae, 2o wherein two bone screws 18 are screwed into one cervical vertebra and the two other bone screws 18 are screwed into the other cervical vertebra. The central bone screw is used if a cervical vertebra is incomplete or if one of the bone screws 18 disposed in the corner areas 12 cannot be screwed into a cervical vertebra.
The receiving opening 14 has an inner peripheral surface 20 which is provided with fluting 22, in particular, a longitudinal fluting (Fig. 2). The fluting 22 extends from the distal end 24 of the receiving opening 20 but not entirely to the proximal end 26, rather ao merely through approximately 80% of the thickness of the cervical vertebra plate 10. The depth of the fluting 22 changes along the height of the receiving opening 14 and increases from the proximal end 26 towards the distal end 24, thereby producing a fluting 22 with approximately wedge-shaped grooves 28. Neighboring grooves 28 as border areas 30 without grooves. These areas 30 without grooves provide positive abutment of the screw head 16 and force transfer between screw head 16 and cervical vertebra plate 10.
Fig. 2 also shows that the width of the areas 30 without grooves increases in the proximal direction such that the screw head 16 positively abuts over the entire periphery in the region of the proximal end 26.
s Fig. 3 shows a first embodiment of a bone screw 18 which is provided with a truncated conical screw head 16. The outer periphery 32 of the screw head 16 has a fluting 34 whose depth (radial dimension) increases in a distal direction. The fluting 34 is formed by grooves io 36 of spherical segment shape having a mutual separation bordering areas 38 without grooves. These areas 38 without grooves have supporting or abutment surfaces whose width increases in a proximal direction.
is Fig. 4 shows an embodiment of a bone screw 18 having a spherical screw head 16. The outer periphery 32 of the screw head 16 is also provided with a fluting 34 which is formed by the spherical segment-shaped grooves 36. The depth of each groove 36 thereby increases from the proximal end of the screw head 16 towards the distal end 2o and decreases again from the equator (maximum diameter of the screw head 16). An area 38 without grooves is also provided between the individual grooves 36, whose width increases from the equator in the direction towards the proximal and distal ends.
zs The fluting 22 of the cervical vertebra plate 10 and the fluting 34 of the bone screw 18 are designed to permit screwing in of the bone screw 18 but exert a blocking effect in the opposite directidn such that the bone screw 18 does not loosen in the receiving opening 14 due to slight unscrewing.
In a preferred embodiment, the cervical vertebra plate has four receiving openings which are located in the corner regions of the cervical vertebra plate. In this manner, two neighboring cervical vertebrae can be secured to the cervical vertebra plate using two io bone screws each. This permits transfer of tensile and compression forces and also of torsion and shearing forces.
In a further development, a further receiving opening is provided in the center of the cervical vertebra plate. A bone screw may be is screwed into this further central receiving opening, in particular if the vertebrae are incomplete or difficult to access, to provide a further possibility of connecting this vertebra to the cervical vertebra plate.
zo The above-mentioned object is also achieved in accordance with the invention with a bone screw of the above-mentioned type in that the fluting has a varying depth along its length.
In this manner, the supporting region on the outer peripheral as surface of the screw head, with which the screw head positively abuts the inner peripheral surface of the receiving opening is enlarged as is the case for the inner peripheral surface of the receiving opening of the cervical vertebra plate. Optimum, secure force transfer between the vertebra and the cervical vertebra plate ao is thereby also facilitated by the bone screw.
In a further development, the screw head is substantially a truncated cone and the depth of the fluting increases from the proximal to the distal end. This is advantageous in that the as supporting area, i.e. the area of the screw head which positively abuts the inner peripheral surface of the receiving opening is located in the proximal area. In this fashion, the forces are introduced from the vertebra into the cervical vertebra plate directly at the vertebra surface, as was mentioned above. The vertebra is supported without substantial bending forces acting on the bone screw, which allows the bone screw to be relatively small in size.
s In another embodiment, the screw head is substantially spherical and the depth of the fluting increases from the poles in the direction of the equator, in each case. The individual sections of the fluting substantially have the shape of a spherical segment such that the screw head has large supporting surfaces in the distal area and also io in the proximal area.
The longitudinal fluting is preferably formed by wedge-shaped, substantially longitudinal grooves with the individual grooves being separated from each other. As viewed in the peripheral direction, is there are smooth sections between the fluting. These areas without grooves also provide positive abutment of the screw head on the inner peripheral surface of the receiving opening of the cervical vertebra plate, to facilitate screwing of the screw. Screwing of the screw is not impaired by the fluting on the inner peripheral surface zo of the receiving opening or on the outer peripheral surface of the screw head, and the supporting area is also enlarged.
The length of the area without grooves, viewed in the peripheral direction, preferably corresponds to 0.3 and 2.0, in particular zs between 0 . 5 and 1. 0 times the length of the grooves themselves . In case of smaller or narrower areas without grooves, the screw head may bend more easily during screwing or directly before screwing is terminated to hook with the grooves or with the fluting in the receiving opening of the cervical vertebra plate and thereby be 3o secured against unscrewing. If there are large regions without grooves, the screw head has relatively large abutment surfaces to assure optimum force transmission.
Further advantages, features and details of the invention can be as extracted from the following detailed description of preferred embodiments with reference to the drawings. The features shown in the drawing, and mentioned in the description and the claims may be essential to the invention either individually or in arbitrary combination.
Fig. 1 shows a perspective view of a cervical vertebra plate with inserted bone screws;
s Fig. 2 shows an enlarged illustration of a corner area of the cervical: vertebra plate showing a receiving opening;
Fig. 3 shows a perspective view of a first bone screw; and io Fig. 4 shows a perspective view of a second bone screw.
Fig. 1 shows a cervical vertebra plate which is designated in total by 10 and has a substantially H-shape. The corner regions 12 have receiving openings 14 (Fig. 2) which receive screw heads 16 (see is also Fig. 3 and 4) of bone screws 18. The cervical vertebra plate 10 has a further receiving opening in its center which bears a further bone screw 18.
The cervical vertebra plate 10 connects two cervical vertebrae, 2o wherein two bone screws 18 are screwed into one cervical vertebra and the two other bone screws 18 are screwed into the other cervical vertebra. The central bone screw is used if a cervical vertebra is incomplete or if one of the bone screws 18 disposed in the corner areas 12 cannot be screwed into a cervical vertebra.
The receiving opening 14 has an inner peripheral surface 20 which is provided with fluting 22, in particular, a longitudinal fluting (Fig. 2). The fluting 22 extends from the distal end 24 of the receiving opening 20 but not entirely to the proximal end 26, rather ao merely through approximately 80% of the thickness of the cervical vertebra plate 10. The depth of the fluting 22 changes along the height of the receiving opening 14 and increases from the proximal end 26 towards the distal end 24, thereby producing a fluting 22 with approximately wedge-shaped grooves 28. Neighboring grooves 28 as border areas 30 without grooves. These areas 30 without grooves provide positive abutment of the screw head 16 and force transfer between screw head 16 and cervical vertebra plate 10.
Fig. 2 also shows that the width of the areas 30 without grooves increases in the proximal direction such that the screw head 16 positively abuts over the entire periphery in the region of the proximal end 26.
s Fig. 3 shows a first embodiment of a bone screw 18 which is provided with a truncated conical screw head 16. The outer periphery 32 of the screw head 16 has a fluting 34 whose depth (radial dimension) increases in a distal direction. The fluting 34 is formed by grooves io 36 of spherical segment shape having a mutual separation bordering areas 38 without grooves. These areas 38 without grooves have supporting or abutment surfaces whose width increases in a proximal direction.
is Fig. 4 shows an embodiment of a bone screw 18 having a spherical screw head 16. The outer periphery 32 of the screw head 16 is also provided with a fluting 34 which is formed by the spherical segment-shaped grooves 36. The depth of each groove 36 thereby increases from the proximal end of the screw head 16 towards the distal end 2o and decreases again from the equator (maximum diameter of the screw head 16). An area 38 without grooves is also provided between the individual grooves 36, whose width increases from the equator in the direction towards the proximal and distal ends.
zs The fluting 22 of the cervical vertebra plate 10 and the fluting 34 of the bone screw 18 are designed to permit screwing in of the bone screw 18 but exert a blocking effect in the opposite directidn such that the bone screw 18 does not loosen in the receiving opening 14 due to slight unscrewing.
Claims (9)
1. System for osteosynthesis, comprising:
a cervical vertebra plate (10) having at least two receiving openings (14) for the screw heads (18) of bone screws (16) for securing the cervical vertebra plate (10) to two cervical vertebrae, wherein the receiving openings (14) have a fluting (22), in particular a longitudinal fluting, about the periphery of a distal area, wherein the depth of the fluting (22) increases from the proximal to the distal, and a bone screw (18) having a screw head (16) and a threaded screw shank, wherein the outer periphery of the screw head (16) has a fluting (34), in particular a longitudinal fluting, wherein the fluting (34) has a varying depth along its length and the screw head (16) is substantially spherical, with the depth of the fluting (34) increasing from each pole towards the equator.
a cervical vertebra plate (10) having at least two receiving openings (14) for the screw heads (18) of bone screws (16) for securing the cervical vertebra plate (10) to two cervical vertebrae, wherein the receiving openings (14) have a fluting (22), in particular a longitudinal fluting, about the periphery of a distal area, wherein the depth of the fluting (22) increases from the proximal to the distal, and a bone screw (18) having a screw head (16) and a threaded screw shank, wherein the outer periphery of the screw head (16) has a fluting (34), in particular a longitudinal fluting, wherein the fluting (34) has a varying depth along its length and the screw head (16) is substantially spherical, with the depth of the fluting (34) increasing from each pole towards the equator.
2. System according to claim 1, characterized in that the receiving openings (14) widen in a distal direction, in particular in a conical or dome-shaped fashion.
3. System according to any one of the preceding claims, characterized in that the fluting (22) is wedge-shaped.
4. System according to any one of the preceding claims, characterized in that four receiving openings (14) are provided which are located in the corner areas (12) of the cervical vertebra plate (10).
5. System according to any one of the preceding claims, characterized in that a further receiving opening (14) is provided in the center of the cervical vertebra plate (10).
6. System according to any one of the preceding claims, characterized in that the fluting (22) is formed by wedge-shaped grooves (28) which extend in a substantially longitudinal direction, and the individual grooves (28) have a mutual separations with areas (30) without grooves therebetween.
7. System according to any one of the preceding claims, characterized in that the fluting (34) is formed by wedge-shaped grooves (36) which extend substantially in a longitudinal direction, individual grooves (36) being separated from each other.
8. System according to any one of the preceding claims, characterized in that, viewed in the peripheral direction, areas (38) without grooves are provided between the grooves (36) of the fluting (34).
9. System according to claim 8, characterized in that, viewed in the peripheral direction, the length of the area (38) without grooves corresponds to between 0.3 and 2.0, in particular 0.5 to 1.0 times the length of a groove (36).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10243791A DE10243791A1 (en) | 2002-09-17 | 2002-09-17 | Cervical vertebral plate for osteosynthesis has cup-shaped openings in corners of plate for heads of bone screws, with decreasing depth towards distal end |
| DE10243791.2 | 2002-09-17 | ||
| PCT/EP2003/010104 WO2004026159A1 (en) | 2002-09-17 | 2003-09-11 | Cervical vertebra plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2499176A1 true CA2499176A1 (en) | 2004-04-01 |
Family
ID=31724834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002499176A Abandoned CA2499176A1 (en) | 2002-09-17 | 2003-09-11 | Cervical vertebra plate |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US7229442B2 (en) |
| EP (1) | EP1545357B1 (en) |
| AT (1) | ATE320224T1 (en) |
| CA (1) | CA2499176A1 (en) |
| DE (2) | DE10243791A1 (en) |
| ES (1) | ES2262022T3 (en) |
| WO (1) | WO2004026159A1 (en) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE450221T1 (en) * | 2003-04-03 | 2009-12-15 | Medartis Ag | RECEPTACLE FOR A BLOCKING ELEMENT AND BLOCKING ELEMENT |
| EP1696810B1 (en) * | 2003-12-22 | 2019-01-23 | Synthes GmbH | Bone plate |
| WO2006069089A2 (en) | 2004-12-21 | 2006-06-29 | Packaging Service Corporation Of Kentucky | Cervical plate system |
| US7766948B1 (en) * | 2005-05-05 | 2010-08-03 | Ebi, Llc | Bone fixation assembly |
| US7686806B2 (en) * | 2005-06-15 | 2010-03-30 | Stryker Spine | Anterior cervical plate |
| US8062294B2 (en) * | 2005-09-15 | 2011-11-22 | Spineform Llc | Implant with integral fastener retention |
| US7699880B2 (en) | 2005-10-24 | 2010-04-20 | Depuy Products, Inc. | Bone fixation system and bone screws having anti-back out feature |
| WO2008021656A2 (en) * | 2006-07-21 | 2008-02-21 | Merlot Orthopedix, Inc. | Apparatus and method for body tissue fixation |
| US20080208259A1 (en) * | 2006-12-19 | 2008-08-28 | Small Bone Innovations, Inc. | Locking fixation system and lag tool |
| ES2366053T3 (en) | 2007-05-03 | 2011-10-14 | Medartis Ag | FIXING DEVICE, COMBINATION OF A FIXING DEVICE WITH A LONGITUDINAL ELEMENT, SYSTEM WITH A COMBINATION OF THIS CLASS AS WELL AS AN OSTEOSYNTHESIS KIT. |
| US8486116B2 (en) | 2010-01-08 | 2013-07-16 | Biomet Manufacturing Ring Corporation | Variable angle locking screw |
| US20110218580A1 (en) | 2010-03-08 | 2011-09-08 | Stryker Trauma Sa | Bone fixation system with curved profile threads |
| US20110313466A1 (en) * | 2010-06-17 | 2011-12-22 | Butler Michael S | Spinal Facet Bone Screw System |
| EP2637584A4 (en) * | 2010-10-15 | 2015-01-28 | Alphatec Holdings Inc | Fixation screw assembly |
| US8728129B2 (en) | 2011-01-07 | 2014-05-20 | Biomet Manufacturing, Llc | Variable angled locking screw |
| US9468481B2 (en) * | 2012-05-17 | 2016-10-18 | Blackstone Medical, Inc. | Anti-backout mechanism for orthopedic devices |
| US9510880B2 (en) | 2013-08-13 | 2016-12-06 | Zimmer, Inc. | Polyaxial locking mechanism |
| DE102014203314A1 (en) * | 2014-02-25 | 2015-08-27 | Rita Leibinger GmbH & Co. KG | Surgical implant for stabilization of cervical bone |
| WO2016057514A1 (en) | 2014-10-06 | 2016-04-14 | Implantable Design, Llc | Distraction plate system |
| US11766282B2 (en) * | 2017-02-22 | 2023-09-26 | In2Bones Usa, Llc | Adjustable angle bone fixation assembly |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US388000A (en) * | 1888-08-14 | Half to chaeles h | ||
| US1151861A (en) * | 1914-05-23 | 1915-08-31 | Ernest M Brumback | Countersinking screw-head. |
| US5564873A (en) * | 1980-02-02 | 1996-10-15 | Multifastener Corporation | Self-attaching fastening element and method of attachment |
| US5275601A (en) * | 1991-09-03 | 1994-01-04 | Synthes (U.S.A) | Self-locking resorbable screws and plates for internal fixation of bone fractures and tendon-to-bone attachment |
| US5199839A (en) * | 1991-10-09 | 1993-04-06 | Abbott-Interfast Corporation | Fastener screw having improved installation and self-locking characteristics |
| DE4409833A1 (en) * | 1994-03-22 | 1995-10-05 | Biedermann Motech Gmbh | Stabilizing device, in particular for stabilizing the spine |
| US5607428A (en) * | 1995-05-01 | 1997-03-04 | Lin; Kwan C. | Orthopedic fixation device having a double-threaded screw |
| DE29508852U1 (en) * | 1995-05-29 | 1996-09-26 | Ejot Verbindungstech Gmbh & Co | Countersunk screw |
| FR2766353B1 (en) * | 1997-07-28 | 1999-11-26 | Dimso Sa | IMPLANT, ESPECIALLY ANTERIOR CERVICAL PLATE |
| US6269716B1 (en) * | 1998-11-18 | 2001-08-07 | Macropore, Inc. | High-torque resorbable screws |
| US7052499B2 (en) * | 1998-02-18 | 2006-05-30 | Walter Lorenz Surgical, Inc. | Method and apparatus for bone fracture fixation |
| DE29903231U1 (en) * | 1999-02-23 | 2000-07-06 | Az Ausruest Zubehoer Gmbh | Countersunk screw |
| DE19950270C2 (en) * | 1999-10-18 | 2003-07-17 | Bernd Schaefer | bone plate |
| GB2381197A (en) * | 2001-10-25 | 2003-04-30 | Corin Surgical Ltd | A surgical implant |
-
2002
- 2002-09-17 DE DE10243791A patent/DE10243791A1/en not_active Withdrawn
-
2003
- 2003-09-11 CA CA002499176A patent/CA2499176A1/en not_active Abandoned
- 2003-09-11 WO PCT/EP2003/010104 patent/WO2004026159A1/en active IP Right Grant
- 2003-09-11 US US10/527,339 patent/US7229442B2/en not_active Expired - Lifetime
- 2003-09-11 ES ES03797295T patent/ES2262022T3/en not_active Expired - Lifetime
- 2003-09-11 EP EP03797295A patent/EP1545357B1/en not_active Expired - Lifetime
- 2003-09-11 DE DE50302686T patent/DE50302686D1/en not_active Expired - Fee Related
- 2003-09-11 AT AT03797295T patent/ATE320224T1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| WO2004026159A1 (en) | 2004-04-01 |
| ATE320224T1 (en) | 2006-04-15 |
| US7229442B2 (en) | 2007-06-12 |
| EP1545357A1 (en) | 2005-06-29 |
| DE50302686D1 (en) | 2006-05-11 |
| EP1545357B1 (en) | 2006-03-15 |
| US20060142766A1 (en) | 2006-06-29 |
| DE10243791A1 (en) | 2004-03-18 |
| ES2262022T3 (en) | 2006-11-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7229442B2 (en) | Cervical vertebra plate | |
| US6471704B2 (en) | Spinal rod transverse connectors | |
| EP0934028B1 (en) | Multi-axial bone screw assembly | |
| US5810817A (en) | Spinal therapy apparatus | |
| CA2294902C (en) | Multi-axial bone screw | |
| US6136002A (en) | Anterior spinal fixation system | |
| EP1214006B1 (en) | Multi-axial bone screw assembly | |
| KR100493994B1 (en) | Multi-axial bone screw assembly | |
| AU2003205937B2 (en) | Spinal osteosynthesis connector and instrumentation | |
| US7455684B2 (en) | Device comprising anterior plate for vertebral column support | |
| US8512384B2 (en) | Bone plate | |
| KR100704150B1 (en) | Spinal Pedicle Screw | |
| US20030139745A1 (en) | Variable angle spinal implant connection assembly | |
| JPH07500760A (en) | sacral implant device | |
| US7722650B2 (en) | Variable angle spinal implant connection assembly | |
| KR20080000515U (en) | Poly-axial pedicle screw apparatus | |
| US20040116932A1 (en) | Fixing screw |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |