WO2003071965A1 - Plaque et vis de fixation pour osteosynthese ou arthrodese - Google Patents
Plaque et vis de fixation pour osteosynthese ou arthrodese Download PDFInfo
- Publication number
- WO2003071965A1 WO2003071965A1 PCT/FR2003/000620 FR0300620W WO03071965A1 WO 2003071965 A1 WO2003071965 A1 WO 2003071965A1 FR 0300620 W FR0300620 W FR 0300620W WO 03071965 A1 WO03071965 A1 WO 03071965A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hole
- plate
- wedging means
- notches
- strip
- Prior art date
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
- A61B17/8033—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
-
- 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
Definitions
- the present invention relates to osteosynthesis or arthrodesis equipment comprising a bone plate.
- This material can in particular be a material for arthrodesis of cervical vertebrae, implanted by the anterior route.
- the assembly of a support structure for an intervertebral graft to a bone plate may also not be entirely satisfactory with existing materials.
- the present invention aims to remedy these essential drawbacks.
- the osteosynthesis or arthrodesis material which it relates to comprises, in a manner known per se, a bone plate and at least one object intended to be connected to this plate or to fix this plate to a bone. To this end, in the material it concerns,
- the plate has, at the level of at least one hole which it comprises, a slot which passes right through it and which extends along this hole over part of the perimeter of this hole, this hole and this slit thus delimiting between them a strip of material having elastic flexibility;
- this strip comprises, on its edge delimiting the hole, wedging means projecting towards the inside of the hole, and said elastic flexibility is such that these wedging means normally occupy a position located towards the inside of the hole but that the strip can be elastically deformed towards the outside of this hole, over a distance at least equal to the height of the wedging means;
- the object intended to be placed in this hole comprises wedging means suitable for coming into engagement, when said object is engaged in the hole, with the wedging means which comprises said strip of material, so as to connect said object to the plate or to fix this plate to a bone, said elastic flexibility thus allowing an erasure of the wedging means that the strip comprises in front of said object when this object is pivoted in said hole and allowing a maintenance of the wedging means which comprises the strip engaged
- Said wedging means which the strip comprises may be formed by a series of notches and said object may be a screw for fixing the plate to a bone, this screw comprising a series of notches forming said wedging means which comprises the object; said wedging means that the strip comprises can also be formed by at least one locking lug and said object can be an ancillary device and / or a support structure for an intervertebral graft such as an intervertebral cage, this ancillary installation and / or this support structure comprising cavities for receiving said locking lugs, these cavities forming said wedging means that the object comprises.
- the aforementioned hole in the plate can be circular or oblong.
- said slot extends along one of the elongated edges delimiting the hole longitudinally, as well as possibly along a portion of at least one of the curved edges delimiting the ends of the hole, if this is necessary to obtain the desired elastic flexibility; the wedging means are arranged at said elongated edge so as to be able to engage with the wedging means of said object whatever the position of this object in the longitudinal direction of this hole.
- the aforementioned hole can be arranged along an axis perpendicular to the plate or not perpendicular to this plate.
- the wedging means that the plate comprises have faces arranged parallel to the axis of the hole and the wedging means that the object comprises have faces arranged parallel to the axis of the object, to allow the coming wedging means which the object comprises in cooperation with the wedging means which the plate comprises when the object is engaged in the hole.
- the plate is intended to be used for performing vertebral arthrodesis, in particular cervical arthrodesis with implantation by anterior approach.
- This plate may have an "X" shape and include four holes arranged in its branches, all or part of these branches comprising a slot and notches forming the wedging means. These holes can in particular be oblong.
- the central part of this plate is intended to be placed opposite the intervertebral space, and the holes of the branches are intended to receive the screws for fixing the plate against the anterior face of the vertebral bodies.
- the plate can be shaped, seen in profile, in a chevron, so as to restore the anatomical lordosis of the vertebrae.
- Figure 1 is a perspective view of a plate and a screw that includes this material, according to a first embodiment
- Figure 2 is a view of a screw in section along the line II-II of Figure 1, after engagement in a hole that includes the plate to receive this screw, in an angular position of the screw
- Figure 3 is a view similar to Figure 2, in another angular position of the screw
- Figure 4 is a side view of the cervical vertebrae, on two of which the material is placed
- Figure 5 is a front view of these cervical vertebrae and this material
- Figure 6 is a partial view of the plate according to the second embodiment
- Figure 7 is a front view of an intervertebral cage intended to be secured to this plate;
- FIG. 1 is a perspective view of a plate and a screw that includes this material, according to a first embodiment
- Figure 2 is a view of a screw in section along the line II-II of Figure 1, after engagement in a hole that includes the plate to receive this screw, in an angular position of
- FIG. 8 is a side view of the plate and of this cage assembled to one another, the plate being seen in median longitudinal section
- FIG. 9 is a view of a stud that the cage includes for its assembly to the plate, in section along line IX-IX of FIG. 8.
- Figures 1, 4 and 5 show a material 1 of cervical vertebral arthrodesis, comprising a plate 2 and screws 3 for fixing this plate to the cervical vertebrae, the material 1 being intended to be placed by the anterior route.
- the plate 2 has an "X" shape and has four oblong holes 4 arranged in its branches 5, parallel to the longitudinal axis of each of these branches 5, to receive the screws 3. As shown, in Figures 4 and 5, it is dimensioned so as to be able to extend along the anterior faces of two consecutive vertebral bodies and is shaped, seen in profile, in a chevron, so as to restore the anatomical lordosis of the vertebrae to which it is fixed.
- the plate 2 also includes a central countersunk hole 6 allowing it to be mounted on a fitting aid and / or the mounting of a support structure for an intervertebral graft, such as an intervertebral cage.
- this hole 6 is intended to be placed at the level of the intervertebral space of the two treated vertebrae.
- the plate 2 is made of titanium or of a titanium alloy of the type commonly used for producing osteosynthesis or arthrodesis material, in particular titanium called “740” or the titanium alloy called “TA6V”.
- each branch 5 has a slot 7 which passes right through it and which extends along one of the elongated edges delimiting the hole 4 longitudinally as well as along portions of the curved edges delimiting the ends of this hole 4.
- the latter and this slot 7 thus delimit between them a strip of material 8 having elastic flexibility, this strip 8 comprising, on its edge delimiting the hole 4, notches 9 projecting towards the inside of the hole 4.
- the width of the slot 7 and said elastic flexibility are such that these notches 9 normally occupy a position located towards the inside of the hole 4 but that the strip 8 can be elastically deformed towards the outside of this hole 4, over a distance at least equal to the height of the notches 9.
- each notch 9 has a face oriented obliquely to the longitudinal direction of the strip 8 and a face oriented substantially perpendicular to the strip 8, said faces obliquely oriented being anterior to said faces oriented substantially perpendicularly, in the direction of screwing of the corresponding screw 3.
- Each screw 3 is screwed clockwise and has a series of notches 10 arranged below its head 11.
- each notch 10 has a face oriented obliquely to the radial direction of the screw 3 and a face oriented substantially in the radial direction of the screw 3, the said faces oriented obliquely being anterior to the said faces oriented substantially in the radial direction, in the direction of screwing the screw 3.
- each screw 3 is engaged through the corresponding hole 4 and is screwed into the bone until its notches 10 are located at the notches 9 of the plate 2; the screwing can be continued until the screw 3 is fully tightened, the notches 9 of the plate 2 disappearing in front of the notches 10 of the screw, thanks to said elastic flexibility of the strip 8; when the fully tightened position of the screw 3 is reached, the notches 9 engage with the notches 10 and prevent the loosening of the screw 3 relative to the plate 2.
- Figure 6 shows a plate 2 whose hole 6 is bordered by a slot 7 which delimits a strip 8.
- the strip 8 and the plate 2 comprise two locking pins 9, arranged diametrically opposite one with respect to the other.
- the hole 6 is intended to receive an intervertebral cage 3, visible in FIGS. 7 and 8, for receiving a graft intended to ensure bone fusion of the vertebrae.
- this cage 3 comprises an assembly stud having a groove delimited by a proximal collar 16 and a distal collar 17.
- the proximal flange 16 has two notches 20 suitable for being engaged on the lugs 9 and has a thickness such that it can come into engagement behind these lugs 9 when the distal flange 17, which is devoid of notches, abuts when against the lugs 9 and that the cage 3 is pivoted about its longitudinal axis.
- the area 18 of the stud located between the flanges 16, 17 comprises two notches superimposed on the notches 20 of the flange 16, two housings 10 for receiving the lugs 9 and two ramps 22 separating these notches from these housings 10.
- the cage 3 can be pivoted by 90 °, which causes the ramps 22 to push back the lug 9 secured to the strip 8 until the housings 10 are opposite the lugs 9.
- the elastic return of the band 8 then brings the lug 9 secured to the band 8 into the corresponding notch, which ensures the locking of the cage 3 by relative to the plate 2.
- the hole 6 of the plate 2 according to this second embodiment can of course receive a screw 3 provided with notches 11 having shapes corresponding to that of the lugs 9.
- the invention brings a decisive improvement to the prior art, by providing osteosynthesis or arthrodesis material allowing perfect immobilization of the bones or parts of treated bones. Indeed, this material ensures perfect maintenance of the complete tightening of the screws even when the bone (s) undergo repeated stresses and / or that the bone (s) are more or less weakened, and / or that the anatomy of the bone (s) treated allows only a reduced depth of insertion of the screws in this or these bones, and allows a perfect assembly of a cage 3 to the plate 2.
- one or more of the holes 4 can be circular, and one or more of the holes 4 can be arranged along an axis not perpendicular to this plate ; the aforementioned faces of the notches 9 then have faces arranged parallel to the axis of the hole 4 and the aforementioned faces of the notches 10 remain arranged parallel to the axis of the screw 3, to allow the arrival of the notches 10 in cooperation with the notches 9 when the screw 3 is engaged in the hole 4.
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Neurology (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
- Surgical Instruments (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03720646A EP1478293A1 (fr) | 2002-02-26 | 2003-02-26 | Plaque et vis de fixation pour osteosynthese ou arthrodese |
JP2003570713A JP2005518242A (ja) | 2002-02-26 | 2003-02-26 | 骨プレートを備えてなる骨接合デバイスまたは関節固定デバイス |
AU2003224224A AU2003224224A1 (en) | 2002-02-26 | 2003-02-26 | Plate and screw for fixation in osteosynthesis or arthrodesis |
US10/925,960 US20050096657A1 (en) | 2002-02-26 | 2004-08-26 | Osteosynthesis or arthrodesis material comprising a bony plate |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0202422A FR2836369B1 (fr) | 2002-02-26 | 2002-02-26 | Materiel d'osteosynthese ou d'arthrodese comprenant une plaque osseuse et des vis de fixation de cette plaque |
FR02/02422 | 2002-02-26 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/925,960 Continuation-In-Part US20050096657A1 (en) | 2002-02-26 | 2004-08-26 | Osteosynthesis or arthrodesis material comprising a bony plate |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003071965A1 true WO2003071965A1 (fr) | 2003-09-04 |
Family
ID=27676085
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2003/000620 WO2003071965A1 (fr) | 2002-02-26 | 2003-02-26 | Plaque et vis de fixation pour osteosynthese ou arthrodese |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1478293A1 (fr) |
JP (1) | JP2005518242A (fr) |
AU (1) | AU2003224224A1 (fr) |
FR (1) | FR2836369B1 (fr) |
WO (1) | WO2003071965A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI383768B (zh) * | 2003-12-22 | 2013-02-01 | Synthes Gmbh | 骨板 |
US8388666B2 (en) | 2007-09-27 | 2013-03-05 | Biomet C.V. | Locking screw system with relatively hard spiked polyaxial bushing |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6755833B1 (en) * | 2001-12-14 | 2004-06-29 | Kamaljit S. Paul | Bone support assembly |
FR2865376B1 (fr) * | 2004-01-27 | 2006-03-17 | Medicrea | Materiel d'osteosynthese vertebrale |
FR2874316B1 (fr) * | 2004-08-23 | 2006-10-20 | Medicrea Sa | Materiel d'osteosynthese ou d'arthrodese |
BRPI0520683A2 (pt) * | 2005-11-16 | 2009-05-19 | Synthes Gmbh | dispositivo para fixação óssea com pelo menos um furo passante para recepção de um meio de fixação óssea |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE424324C (de) * | 1924-03-11 | 1926-01-26 | Margarete Conrad Geb Kettner | Schraubensicherung |
DE4409833A1 (de) * | 1994-03-22 | 1995-10-05 | Biedermann Motech Gmbh | Stabilisierungseinrichtung, insbesondere zur Stabilisierung der Wirbelsäule |
FR2778088A1 (fr) * | 1998-04-30 | 1999-11-05 | Materiel Orthopedique En Abreg | Implant anterieur notamment pour le rachis cervical |
EP0995404A1 (fr) * | 1998-10-20 | 2000-04-26 | Industrias Quirurgicas De Levante | Plaque cervicale |
WO2000078238A1 (fr) * | 1999-06-17 | 2000-12-28 | Eurosurgical | Dispositif anti-recul pour implant orthopedique |
US20010041894A1 (en) * | 1998-05-19 | 2001-11-15 | Campbell Christopher M. | Anterior cervical plate and fixation system |
US6361537B1 (en) * | 2001-05-18 | 2002-03-26 | Cinci M. Anderson | Surgical plate with pawl and process for repair of a broken bone |
-
2002
- 2002-02-26 FR FR0202422A patent/FR2836369B1/fr not_active Expired - Fee Related
-
2003
- 2003-02-26 WO PCT/FR2003/000620 patent/WO2003071965A1/fr not_active Application Discontinuation
- 2003-02-26 JP JP2003570713A patent/JP2005518242A/ja not_active Withdrawn
- 2003-02-26 AU AU2003224224A patent/AU2003224224A1/en not_active Abandoned
- 2003-02-26 EP EP03720646A patent/EP1478293A1/fr not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE424324C (de) * | 1924-03-11 | 1926-01-26 | Margarete Conrad Geb Kettner | Schraubensicherung |
DE4409833A1 (de) * | 1994-03-22 | 1995-10-05 | Biedermann Motech Gmbh | Stabilisierungseinrichtung, insbesondere zur Stabilisierung der Wirbelsäule |
FR2778088A1 (fr) * | 1998-04-30 | 1999-11-05 | Materiel Orthopedique En Abreg | Implant anterieur notamment pour le rachis cervical |
US20010041894A1 (en) * | 1998-05-19 | 2001-11-15 | Campbell Christopher M. | Anterior cervical plate and fixation system |
EP0995404A1 (fr) * | 1998-10-20 | 2000-04-26 | Industrias Quirurgicas De Levante | Plaque cervicale |
WO2000078238A1 (fr) * | 1999-06-17 | 2000-12-28 | Eurosurgical | Dispositif anti-recul pour implant orthopedique |
US6361537B1 (en) * | 2001-05-18 | 2002-03-26 | Cinci M. Anderson | Surgical plate with pawl and process for repair of a broken bone |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI383768B (zh) * | 2003-12-22 | 2013-02-01 | Synthes Gmbh | 骨板 |
US8388666B2 (en) | 2007-09-27 | 2013-03-05 | Biomet C.V. | Locking screw system with relatively hard spiked polyaxial bushing |
Also Published As
Publication number | Publication date |
---|---|
FR2836369B1 (fr) | 2004-04-30 |
EP1478293A1 (fr) | 2004-11-24 |
AU2003224224A1 (en) | 2003-09-09 |
JP2005518242A (ja) | 2005-06-23 |
FR2836369A1 (fr) | 2003-08-29 |
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