WO2007144502A2 - Trépan pour le prélèvement d'une carotte osseuse, muni d'un dispositif de guidage à l'intérieur de l'os associant un foret et un outil de coupe tubulaire - Google Patents
Trépan pour le prélèvement d'une carotte osseuse, muni d'un dispositif de guidage à l'intérieur de l'os associant un foret et un outil de coupe tubulaire Download PDFInfo
- Publication number
- WO2007144502A2 WO2007144502A2 PCT/FR2007/000971 FR2007000971W WO2007144502A2 WO 2007144502 A2 WO2007144502 A2 WO 2007144502A2 FR 2007000971 W FR2007000971 W FR 2007000971W WO 2007144502 A2 WO2007144502 A2 WO 2007144502A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tool
- rod
- bone
- guide
- bone material
- Prior art date
Links
- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 164
- 239000000463 material Substances 0.000 claims description 100
- 230000035515 penetration Effects 0.000 claims description 22
- 239000012530 fluid Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 15
- 230000002262 irrigation Effects 0.000 claims description 13
- 238000003973 irrigation Methods 0.000 claims description 13
- 238000005070 sampling Methods 0.000 claims description 10
- 238000002955 isolation Methods 0.000 claims description 4
- 210000003423 ankle Anatomy 0.000 claims description 2
- 239000000126 substance Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 22
- 239000007943 implant Substances 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 8
- 244000000626 Daucus carota Species 0.000 description 7
- 235000002767 Daucus carota Nutrition 0.000 description 7
- 230000001054 cortical effect Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 6
- 239000000523 sample Substances 0.000 description 5
- 230000006866 deterioration Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 210000000056 organ Anatomy 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000003100 immobilizing effect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 239000000560 biocompatible material Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
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- 239000002131 composite material Substances 0.000 description 1
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- 239000004053 dental implant Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
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- 229910001092 metal group alloy Inorganic materials 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/0233—Pointed or sharp biopsy instruments
- A61B10/025—Pointed or sharp biopsy instruments for taking bone, bone marrow or cartilage samples
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1635—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for grafts, harvesting or transplants
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1637—Hollow drills or saws producing a curved cut, e.g. cylindrical
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
- A61C1/08—Machine parts specially adapted for dentistry
- A61C1/082—Positioning or guiding, e.g. of drills
- A61C1/084—Positioning or guiding, e.g. of drills of implanting tools
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/0233—Pointed or sharp biopsy instruments
- A61B10/025—Pointed or sharp biopsy instruments for taking bone, bone marrow or cartilage samples
- A61B2010/0258—Marrow samples
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00681—Aspects not otherwise provided for
- A61B2017/00685—Archimedes screw
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/03—Automatic limiting or abutting means, e.g. for safety
- A61B2090/033—Abutting means, stops, e.g. abutting on tissue or skin
- A61B2090/036—Abutting means, stops, e.g. abutting on tissue or skin abutting on tissue or skin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/08—Accessories or related features not otherwise provided for
- A61B2090/0801—Prevention of accidental cutting or pricking
- A61B2090/08021—Prevention of accidental cutting or pricking of the patient or his organs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2217/00—General characteristics of surgical instruments
- A61B2217/002—Auxiliary appliance
- A61B2217/005—Auxiliary appliance with suction drainage system
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2217/00—General characteristics of surgical instruments
- A61B2217/002—Auxiliary appliance
- A61B2217/007—Auxiliary appliance with irrigation system
Definitions
- Drill for collecting a bone core provided with a guide device inside the bone associating a drill and a tubular cutting tool.
- the invention is in the field of surgical instruments, and more particularly in the field of drill bits for the removal of a cohesive bone core. It relates to such a trephine, equipped with means to facilitate its use and in particular to facilitate the tasks of the practitioner relating to the guidance of a tubular cutting tool that includes the trephine and the removal of the bone core removed by means of a such trephine.
- drill bits for the removal of bone material which are for example used in dental surgery.
- a first type of bit is arranged for the removal of bone material in powder form and / or ground material. Such a drill bit makes it easy to use the bone material removed, but the consistency of this bone material is unsuitable for use in grafts and / or bone fillings.
- a second type of trephine is arranged for the removal of a bone core, which may be subsequently used by the practitioner wholly or partly for grafts and / or bone fillings because of its cohesive nature. The invention relates to a bit of this second type.
- the trephine consists mainly of a tubular tool whose distal end is provided with a toothing for perforation of the bone material along a circular cutting line.
- the axial recess of the tool forms a reserve inside which is housed the core after sampling.
- the proximal end of the tool is provided with a gripping shank by the mandrel of an instrument for rotating the tool.
- This gripping tail is generally constituted by an axial rod which is integral with the tool and which is prehensible by the instrument.
- the tool usually has at its periphery at least one lateral access window to the bone sample, to provide the practitioner a passage allowing him to push the carrot out of the drill bit after sampling.
- the removal of the core from the tool is usually performed by the practitioner after release of the tool from its grip by the rotary drive instrument, by means of a probe, a cannula or the like , which is introduced through the window to exert a thrust on the core and cause its ejection through the distal outlet of the tool.
- Such an ejection operation is long and difficult to perform, because of the fragility of the core and the risk of its deterioration by the cannula through the window of the tool.
- the core is locked by friction inside the bit, especially if the sample was taken under high temperature conditions.
- the skill of the practitioner to perforate the bone material by the bit is critical. More particularly, the tool has a substantial diameter to receive in its internal recess the carrot to be taken, and its teeth are formed on the edge of its distal end being likely to be irregular.
- the point of impact and the path followed by the tool in the bone material are predetermined by the practitioner, and the actual path traveled by the tool depends on the ability of the latter to handle the bit.
- This skill is particularly tested because of the large diameter of the tool, and the risk of slipping and / or sliding of the tool when it comes into contact with the bone material. This shows a difficulty for the practitioner to maintain the point of impact he has chosen on the bone cortical, and maintain the predetermined path of the tool given its large diameter.
- the trephine with a guide device of a tubular tool when it comes into contact with the bone material.
- a guide apparatus comprising a stitching rod of the bone material, so that the practitioner can engage the trephine on the bone prior to setting in contact with the tool against the patient's tissue.
- this rod is provided at its distal end with a tip which constitutes a point of pivot and anchoring of the bit prior to the introduction of the tool into the bone material.
- This rod is slidably mounted on the trephine, so that it can retract as the progress of the tool in the bone material.
- the tool is attached by screwing on the guide device, which is provided with the gripping tail by the mandrel of the tool for rotating the tool.
- the rod is also used to extract the bone core out of the tool.
- a thrust exerted by the practitioner on the stem for its emergence through the distal end of the tool allows to drive the carrot taken out of the tool.
- Such a guiding apparatus remains unsatisfactory and deserves to be improved. Indeed, taking the bit on the bone does not guarantee its sufficient maintenance prior to contacting the tool against the bone, especially since this contact generates a reaction torque on the tool susceptible to skid the tip.
- the pointing obtained by means of the rod offers no solution as to the axial guidance of the tool during the removal of the bone core, with a risk of misalignment of the tool compared to the trajectory initially provided by the practitioner.
- the methods provided for extracting the bone core removed from the tool are not satisfactory.
- a guiding apparatus comprises a body on which can be jointly reported a drill and a tubular tool.
- the drill and the tool are of substantially the same diameter, and the drill is provided with an emerging centering tip out of the tool to assist the positioning of the tool against the bone material and prevent it from slipping when placed. in contact with it.
- the drill is capable of initiating the diameter of the tubular tool prior to bringing it into contact with the bone material, to promote its positioning and prevent its skidding.
- the tubular tool is mounted on the body by screwing, and its proximal outlet is used for the passage of a piston allowing the practitioner to extract the bone core removed from the tool.
- a pointing solution is insufficient to ensure correct positioning of the tool when it is brought into contact with the bone material, and does not propose a provision allowing the practitioner to conveniently manipulate the bit so as to guarantee that the road traveled is the one he originally planned.
- removal of the bone core out of the tool involves the use of a specific tool arranged in a piston, which has the drawback of making available a large number of dissociable organs and usable independently for specific operations. It appears that such provisions deserve to be improved.
- the bit is composed of a tubular tool and a coaxial drill which are jointly rotated, so that a bone core previously removed and housed in the tool can be deposited during a perforation of the bone made by means of the drill and for receiving an implant, so that the installation of this implant is supported.
- the bone core constitutes a graft which is carried by the tubular tool and which is deposited concomitantly with the formation of a perforation in the bone intended to revise an implant, to increase the implanting surface of the latter in the bone material.
- the object of the present invention is to provide a drill bit for the removal of a bone core which is organized to remedy the difficulties and problems that have been stated.
- a trephine is of the type comprising a tubular tool perforation of the bone material along a circular cutting line, the axial recess is used to form a reserve for receiving the removed bone core.
- Such a trephine is also of the type comprising means for guiding the tubular tool, at least to prevent it from slipping when it comes into contact with the bone material that it must perforate, and means for removing the removed bone core. of the tubular tool.
- the trephine of the present invention is arranged for the removal of a cohesive bone core.
- This bit comprises a tubular shaped tool with circular section, the distal end of which is provided with at least one toothing for coring the bone material along a circular cutting line.
- This tool delimits an axial recess at its distal end providing a reserve for receiving the core after sampling, the proximal end of the bit being provided with a gripping tail for the rotational drive of the tool by an instrument.
- This bit comprises means for guiding the tool in the bone material comprising a rod which emerges at its distal end out of the distal opening of the axial recess of the tool and which is provided with centering means on the bit.
- the emerging portion of the stem is a bit engaging member on the bone material.
- such a trephine is mainly recognizable in that the guide means comprise a drill adapted to provide a pre-hole in the bone material prior to contacting the tool against the latter.
- This front hole forms a receiving channel of the emergent end of the rod which constitutes a guide pin arranged in ankle adapted to be introduced inside such a front hole.
- the practitioner determines the point of impact and the path of the tool, it conveniently conveniently matches a small diameter hole by means of a drill bit.
- This operation to achieve a drill bit guide hole can be achieved easily because of the small diameter of the drill bit, or even beforehand a primer by means of a ball mill or similar instrument.
- the front hole being formed, that forms an axially extended cylindrical channel which is used for the introduction of the guide pin emerging coaxially out of the axial recess of the tool.
- the guide pin is in particular of cylindrical conformation circular section or the like, such as polygonal section whose sides jointly define a circle.
- the operation of perforation of the bone material by the tool is made reliable by preventing any slipping and / or skidding of the tool on the bone cortical bone, and by guiding the tool along the trajectory desired by the practitioner, this trajectory corresponding to the direction of the foramen he has previously operated in bone.
- the presence of the guide pin, whose diameter is very much smaller than that of the diameter of the tool, does not induce deterioration of the core and does not affect its cohesive nature in one block.
- the tool is likely to be provided with the gripping tail, and the rod to be slidably mounted inside the tool such as in the manner of a jack.
- the piston of such a jack is likely to be constituted by the rod equipped with a centering flange slidably mounted within the axial recess of the tool, the cylindrical wall of which constitutes the cylinder body.
- the bit comprises means for centering the rod coaxially with the tool.
- These centering members comprise cooperating members formed respectively on the rod and indifferently on the tool and / or on the gripping tail.
- the centering means comprise in particular an axial extension rod of the guide pin, which cooperates with a channel guide provided in the gripping shank and / or at the proximal end of the tool.
- the gripping tail is preferably arranged on a guiding apparatus. It will be understood that the gripping tail is formed either on the tool or on the guiding apparatus, this position of the gripping tail varying according to the arrangements of the trephine for its advantageous use with a guidance device or not. .
- the organization of the bit for its grip by the rotating tool of the tool is easily adaptable according to the organization of the guide device.
- the gripping tail is formed on a guide apparatus comprising means for removably mounting the tool and / or the drill which are able to allow removal and isolation of the tool housing a core taken beyond the guide apparatus and the rod, the latter being in particular installed on the guide apparatus.
- the relative arrangement of the mounting means and centering means gives the drill bit an ability to allow the isolation of the tool housing a sampled bone core, to facilitate the removal and recovery of this bone core. avoiding its deterioration.
- the tool being isolated, its proximal opening is completely released to form an axial window providing easy access to the practitioner to remove the removed bone core.
- Such an ability to remove the tool is especially allowed from the centering means which exclude a radial obstacle formed on the rod, such as a centering collar or the like interposed between the guide pin and the rod.
- the removable nature of the tool allows the practitioner to perform the pre-hole prior to installation of the tool on the guide device.
- the means for removably mounting the tool on the guiding apparatus are for example of the screw type, and / or by interlocking or clipping, and / or by any other similar mounting technique allowing an easily reversible junction between the tool. and the guiding apparatus.
- the tool comprises at its proximal end a threaded zone cooperating with a complementary threaded zone formed at the distal end of a body of the guide device carrying the rod.
- the threaded zones are respectively arranged in correspondence on the tool and on the guidance device, whether in the internal and / or external threaded zone.
- the fitting by interlocking between the tool and the guiding apparatus is indifferently carried out directly by means of cooperating interlocking members which they comprise respectively, and / or indirectly by means of organs specific and independent cooperating assemblies.
- the axial recess of the tool is opening at its proximal end to form an axial window providing easy access to the practitioner to remove the removed core.
- the advantage of the removable mounting of the tool on the guide device is not only to allow isolation of the tool after the operation of sampling the core to facilitate the extraction of the latter out of the tool which the box, but also to allow to release the proximal axial outlet of the tool to form the axial window.
- This axial window includes a passage for a pushing instrument, such as a cannula, a probe or similar instrument allowing the practitioner to easily remove by axial thrust the core removed from the tool without the risk of damage.
- the drill bit advantageously integrates an axial channel for admitting an irrigation fluid and conveying this fluid inside the axial recess of the tool. More particularly, the presence of the guiding apparatus is used to arrange the drill bit in a structurally simple manner so as to endow it with the intake channel.
- This axial inlet channel makes it possible to perform efficient irrigation of the bone material during its perforation by means of the tool. More particularly, the irrigation is carried out from within the formed capacity by the axial recess of the tool, to route the liquid to the heart of the area of the bone material being perforated by the bit.
- the drill bit advantageously integrates an axial channel for admitting an irrigation fluid and conveying this fluid inside the axial recess of the tool.
- the centering means comprise a guide channel of the rod which is formed at least partly inside the gripping tail and which constitutes the intake channel.
- the diameter of the guide channel is greater than that of the rod to spare the intake channel around the latter.
- the diameters of the guide channel and the rod are in correspondence, and one or more longitudinal grooves laterally opening on the guide channel are formed at the periphery of the latter to form the intake channel.
- the section of the guide channel is circular and the cross section of the rod is of cruciform conformation to at least three centering legs, or similar conformation allowing the passage of the irrigation fluid through it.
- the rod is equipped with a centering body constituting the centering means and slidably mounted in the guide channel.
- This centering body advantageously comprises orifices constituting the inlet channel for the passage of the irrigation fluid through it to the axial recess of the tool.
- the intake channel is formed by a guide channel of a rod that includes the rod extending the guide pin.
- This guide channel is formed in the gripping tail and is constituting the centering means of the rod, in association with the rod.
- the guide apparatus preferably comprises a shutter member proximal outlet of the axial recess of the tool, which allows to prohibit an escape of the irrigation fluid through the window.
- the side wall of the tool preferably excludes any widely open window usually used for removal of the bone core out of the tool by the practitioner. Fluid passages are likely to be formed through the cylindrical wall of the tool, to allow passage through them liquids, including physiological fluids, to prevent blood accumulation and pressurization inside. of the axial recess.
- the guiding apparatus comprises an obturating member of the proximal opening of the axial recess of the tool.
- the bit is provided with abutment means constituting a depth gauge against the penetration of the tool into the bone material.
- abutment means consist for example of an abutment member provided on the tool being disposed at a predetermined distance from its distal end.
- the abutment means are indifferently formed in the axial recess of the tool and / or at its outer periphery, or even on the guide apparatus.
- Such an abutment member is for example constituted by a flange or the like disposed at a predetermined axial distance and / or adjustable relative to the distal end of the tool.
- the practitioner has a set of tools each provided with a stop member disposed at a distance relative to the distal end of the tool, or the stop member is equipped with means for adjusting its axial position with respect to the distal tip of the tool.
- the bit is provided with means for adjusting the separation distance between the stop means and the distal end of the tool.
- the abutment means constitute an obstacle to the penetration of the tool into the bone material beyond a predetermined depth of perforation, to provide a comfort of use of the tool by the practitioner, the latter being dispensed from monitoring the depth of penetration of the tool in the bone material.
- the drill bit advantageously comprises a depth gauge limiting the stroke of penetration of the tool within the bone material.
- the rod is axially mounted indifferently mobile slidably or fixed relative to the tool.
- the rod can be connected to the tool by the guiding apparatus, on which the tool is removably mounted to be separable from the guiding apparatus and the rod despite the presence in its axial recess of a bone core removed.
- the rod is fixedly mounted on the guide apparatus, and therefore is fixedly mounted relative to the tool, so that the penetration stroke of the tool inside the the bone material is easily appreciated by the practitioner from the abutment of the guide finger at the bottom of the front hole.
- the distal end of the guide pin constitutes a depth gauge limiting the stroke of penetration of the tool inside the bone material.
- the rod is slidably mounted on the tool by being retractable towards the inside of the axial recess of the latter under the effect of a thrust exerted at the distal end of the guide pin. More particularly, the rod is slidably mounted on the tool, so that it can be retracted into the recess as the tool progresses inwardly of the bone material. Conversely after removal of the core, the practitioner can easily extract the core out of the tool from a sliding of the rod to the outside of the axial recess of the tool.
- the core being naturally fixed on the guide finger, it is maneuvered outwardly sliding out of the axial recess of the tool carrying carrot, which is extracted out of the tool and which is find easily accessible by the practitioner, who can easily remove it from the guide finger without risk of damaging it.
- the rod is mounted axially movable relative to the tool and the depth gauge is constituted by abutment means indifferently provided on the guide apparatus and on the tool.
- the rod is mounted axially fixed relative to the tool and the depth gauge is constituted by the guide pin.
- the rod can be removably mounted on the guiding apparatus, to allow its removal.
- the hole previously operated by the practitioner is of sufficient depth to guide the tool in an operation to provide in the bone material a pre-perforation by means of the tool.
- This operation before perforation of the bone material by the tool being performed the rod is removed from the guide apparatus and the pre-perforation is used to guide the tool inside the bone material to removal of the carrot.
- the presence of the pre-hole of a depth substantially corresponding to that of the performance by the tool for coring induces that the core obtained and removed from the bit comprises an axial hole corresponding to the pre-hole made in the bone material for the passage of the guide finger.
- the core obtained is at least partially preserved from such an axial hole.
- the rod is removably mounted on the guiding apparatus, so that the rod is removable after the formation of a pre-perforation by means of the tool.
- the guide pin is likely to be constituted by the distal end of the drill bit forming the hole. This drill is constitutive of the guiding apparatus, so that having been used to practice the pre-hole prior to the installation of the tool on the guiding apparatus via the corresponding removable mounting means, the drill is then used to guide the tool during its penetration into bone.
- the rod is capable of being formed by the drill, the distal end of which constitutes the guide finger.
- the tool is advantageously separable from the guiding apparatus and the drill bit by means of its removable mounting means on the guiding apparatus, so that only the drill can be mounted on the guiding apparatus in order to practice the prehole.
- the drill is also capable of being mounted on the guiding apparatus via reversible mounting means, so that it can be removed to allow penetration of the tool into the bone material by being guided from an impression previously made by the tool, according to the aforementioned methods related to the removable nature of the rod.
- the practitioner performs an additional operation after removing the bit from the bone material, the bone core being housed inside the tool.
- This additional operation consists in removing the tool housing the carrot bone by means of its removable mounting means on the guide apparatus, to dissociate it from the latter and the rod prior to the operation of exerting a thrust against the bone core.
- the rod being fixedly mounted relative to the tool, the operation of perforating is more particularly to cause penetration of the tool in the bone material until abutment of the guide finger in the bottom of the before hole.
- the stem being formed of a drill removably mounted on the tool
- the step of perforating comprises the steps of: *) pre-perforating with the tool until the stop guide finger at the bottom of a pre-hole of limited depth, then *) remove the drill bit from the bone material and disassemble the stem of the guiding device,
- Fig.1 and Fig.2 are schematic representations of a drill bit of the present invention according to respective embodiments.
- Fig.3 is composed of diagrams illustrating successively a method of implementation of a trephine of the present invention according to the variant illustrated in fig.2.
- Fig.4 is composed of diagrams illustrating successively another method of implementation of a trephine of the present invention according to the variant illustrated in fig.2.
- Fig.5 is composed of diagrams illustrating successively a method of implementation of a trephine of the present invention according to the variant illustrated in fig.1.
- Fig.6 is composed of diagrams illustrating successively another method of implementation of a trephine of the present invention according to the variant illustrated in fig.2.
- FIGS. 7 to 9 are diagrammatic illustrations of a bit forming tool for forming a cavity in a bone material, according to respective embodiments, this tool being provided with stop means limiting its travel inside the hole. bone matter.
- a trephine is intended for the removal of a bone core.
- a trephine is usable in the field of bone surgery in general, or even more particularly in the dental field for the installation of endosseous implant.
- This bit comprises a tool 1 of cylindrical shape consisting generally of a wall of revolution delimiting an axial recess 2 for housing the removed bone core.
- This axial recess is opening at its distal end to provide a passage for the core to be removed, and the cylindrical wall of the tool is provided at its distal end with a perforation toothing of the bone material 7 along a circular cutting line. .
- This toothing is more particularly formed from a corrugation or the like of the distal portion of the cylindrical wall of the tool 1, which provides a circular cutting line defining the periphery of the core taken and received inside the axial recess 2 of the tool 1.
- the advantage of a sample of such a bone core is to allow a practitioner to have a cohesive bone mass in one block, which he is likely to use for a transplant and / or a filling.
- the use of such a bit is also likely to be exploited to provide a housing free from perforation of bone material, and having dimensional characteristics suitable for receiving an endosseous implant, such as a dental implant or similar.
- the rigor of the guide of the tool 1 and the irrigation conditions implemented by the drill bit of the invention allow to obtain such dimensional characteristics without having to retouch the housing formed by the tool 1 in the bone material 7.
- a gripping shank 3 of the bit is provided at its proximal end for its grip by an instrument for rotating the tool 1.
- the tool 1 and / or the constituent members of the bit are in particular made of a biocompatible material, such as a metal or a metal alloy, or a ceramic material, or even a composite material combining metal and ceramic.
- the tool 1 and / or the other members making up the bit are also capable of being provided with a coating and / or a surface treatment.
- the tool 1 has only one cutting blade for the formation of a single cutting line.
- the tool 1 may have a plurality of axially successive cutting blades, which are formed on circular cutting edges of different diameters and progressive.
- the bit is equipped with a guide device 28 of the tool 1 during the perforation of the bone material, comprising a guide rod 4 which emerges coaxially out of the distal opening of the axial recess 2 of the tool 1. More particularly, the guide rod 4, the tool 1 and its axial recess 2 are coaxial with respect to a common axis A of the bit.
- This guide rod 4 comprises at its distal end a guide pin 5, which is intended to be introduced inside a pre-hole 6 previously operated by the practitioner in the bone material 7.
- the tip of the guide pin 5 is likely to be of any conformation, such as flat, rounded or conical.
- the introduction of the guide pin 5 inside the front hole 6 serves to guide the contact between the bone material 7 and the tool 1 to prevent slipping and / or skidding on the bone cortical, and allows to guide the path of the tool 1 inside the bone material 7.
- the guide finger 5 is axially extended to form a cylinder adapted to be received by a guide channel formed by the pre-hole 6.
- the bit is provided with an inlet channel 8 for a fluid to irrigate the perforated zone by the tool 1.
- This inlet channel 8 opens into the axial recess 2 of the tool 1, to water the zone.
- the wall of the tool 1 has openings for passage through them liquids, including physiological fluids, to prevent blood accumulation and pressurization inside the axial recess 2. Such openings can be incidentally used to offer the practitioner visual access to the area being perforated.
- the bit is also provided with means for thrusting the sampled core, coaxially with the axis A of the tool 1, to allow easy removal from the axial recess 2 while limiting the risk of deterioration of the core during removing it from the tool 1.
- the tool 1 carries the gripping tail 3 and the guide rod 4 is slidably mounted on the bit, and more particularly is slidably mounted inside the bit.
- Centering means can guide the rod 4 sliding on the tool 1.
- These centering means implement a guide rod 9 constituting the rod 4 and formed in extension of the guide pin 5.
- This rod 9 is slidably mounted inside a guide channel 10 which is arranged coaxially with the axis A in the gripping tail 3.
- This guide channel 10 is nevertheless of a diameter greater than that of the bead wire 9, to further constitute the inlet channel 8 of the irrigation fluid.
- the centering means also comprise a centering body 11 inside the axial recess 2 of the tool 1.
- this centering body 11 comprises conduits 12 for circulating the irrigation fluid therethrough, towards the distal opening of the axial recess 2.
- the sliding assembly of the guide rod 4 on the tool 1 is intended to allow its retraction towards inside the axial recess 2 of the tool 1, under the effect of the support that takes the guide finger 5 by its end in the bottom of the hole 6 as the progress of the tool 1 within the bone material 7.
- the tool 1 is incidentally provided with a stop member 23 against its penetration into the bone material 7.
- This abutment member 23 is particularly useful in view of the axial mobility of the rod 4 for the retraction of the finger 5 to the inside of the axial recess 2 of the tool 1. More particularly, this abutment member 23 constitutes a depth gauge, which provides the practitioner with means for limiting the penetration stroke of the tool 1 in the bone material 7.
- Such an abutment member 23 is for example constituted by a flange or the like formed on the outer periphery of the tool 1.
- the abutment member 23 is arranged at a distance from the distal end of the abutment. tool 1 corresponding to the stroke of the tool 1 desired by the practitioner within the bone material 7.
- this abutment member 23 is provided with means for adjusting its position on the bone. tool 1.
- the practitioner may have a set of tools 1 comprising abutment members 23 placed at respective distances with respect to the distal end of the corresponding tool 1.
- the bit is illustrated in an exploded manner.
- the guiding apparatus 28 carries the gripping tail 3.
- the tool 1 is removably mounted on the guiding apparatus 28 by means of mounting means 13.
- these mounting means 13 are of the screw type, and comprise a shaft 14 formed at the proximal end of the tool 1 for receiving a stepped cylinder.
- the stepped cylinder 15 carries the gripping tail 3 and is provided with removable junction means 16 of the guide rod 4.
- these junction means 16 are of the end screw type. proximal of the guide rod 4 inside a housing provided for this effect that comprises the stepped cylinder 15. This screw connection between the guide rod 4 and the stepped cylinder 15 is advantageous.
- junction means 16 furthermore constitute means for adjusting the emergence length of the guide finger 5 from the tool 1 during the sampling operation.
- the guide rod 4 is optionally interchangeable according to need among a set of rods of different dimensions, and / or may be removed during the operation of sampling the bone core.
- the proximal opening of the axial recess 2 of the tool 1 is widely open to form an axial window 17 providing an access passage to the axial recess 2 of the tool 1, for easy removal of the core taken out of the tool 1 by the practitioner by means of a pushing instrument.
- a pushing instrument such as a cannula or the like.
- the irrigation channel 8 is formed in the guiding apparatus 28, and more particularly in the stepped cylinder 15 and at least partly in the gripping tail 3.
- the intake channel 8 opens coaxially inside the axial recess 2 of the 1.
- such an inlet channel 8 is capable of having a lateral junction orifice with an irrigation fluid supply duct provided with a rotating connection to a source of water. fluid supply.
- the guide finger 5 is arranged in a drill to perforate the bone material 7.
- the front hole 6 is operated by the practitioner by means of a drill 25 constituting the guiding apparatus .
- the front hole 6 is operated prior to the installation of the tool 1 on the guide device.
- This front hole 6 is particularly shallow, that is to say of a sufficient depth to guide in a subsequent step the drill 25 after installation of the tool 1 on the guide device via the mounting means 13. More particularly, the front hole 6 is operated at shallow depth by means of the drill 25 installed on the guide apparatus.
- the tool 1 is likely to be already installed on the guide device, but its contact with the bone material 7 only occurs after the formation of the front hole 6.
- the drill 25 mounted reversibly or integral with the guide apparatus 28, and is used for the formation of the pre-hole without the presence of the tool 1. Then the drill is removed from the before the hole 6 and the tool 1 is installed on the guide apparatus 28. Then the tool 1 is approached to the bone material 7 and the drill 25, then constituting the guide finger 5, is introduced into the pre-hole 6. The practitioner then perforates the bone material 7 by means of the tool 1. After forming the front hole 6, the drill 25 perforates the bone material 7 as the tool penetrates 1 in the latter.
- the tool 1 is equipped with abutment means 23 against its penetration into the bone material 7 beyond a predefined depth.
- the abutment means 23 are advantageously constituted by the distal shoulder of the barrel 14 constituting the mounting means 13.
- the axial extension of the barrel 14 can be adapted to place the shoulder constituting the abutment means 23 at a distance predefined the distal end of the tool 1, corresponding to a depth of penetration of the tool 1 in the bone material 7.
- a method of implementing a drill bit of the present invention consists in its generality to perform the following steps: *) practice in the bone material 7 a pre-hole 6 of a diameter corresponding to the stem 4, and more particularly that of the guide finger 5, as shown in diagram (a).
- This operation may more particularly consist in preparing a primer in the cortical bone using a ball mill or similar instrument, so that the real point of impact of the perforation for the coring of the bone material 7 is most precisely and most easily realized.
- a drill bit 19 of small diameter is used to form the front hole 6.
- the weakness of the diameter of the front hole 6 is to be appreciated according to the diameter of the guide pin 5, and with respect to the diameter of the tool 1 which is much larger than the diameter of the guide pin 5.
- the bone material 7 has a front hole 6 ready to receive the guide pin 5 of the bit. *) introduce the guide rod 4 equipping the bit inside the front hole 6, as shown in diagram (c).
- the tool 1 being guided through the guide rod 4, any risk of slipping and / or skidding of the tool 1 on the bone cortical is avoided.
- the guide rod 4 being coaxial with the tool 1, the path of the tool 1 will be in exact correspondence with that of the drill 19 used for the formation of the hole 6.
- Fig.3 illustrates in its generality a method of implementing a bit of the present invention.
- specific arrangements for the use of a drill bit of the type shown in Fig. 2 are also illustrated in this figure.
- the operation of perforating is more particularly to cause penetration of the tool 1 into the bone material 7 until abutment of the guide finger 5 at the bottom of the front hole 6.
- the finger 5 then constitutes a depth gauge of the penetration of the tool 1 into the bone material 7, as shown in diagrams (c) and (d).
- the operation of exerting thrust against the core 20 more particularly comprises the steps of:
- Fig.4 illustrates a possible implementation specificity of a bit of the type shown in Fig.2.
- the operation of perforating comprises more particularly the steps consisting in: *) providing a shallow pre-hole 6 in the bone material 7 in the manner described in FIG. 3, as illustrated in the diagram (h).
- This front hole 6 is intended to be used for an intermediate step consisting in making a pre-perforation 22 by means of the tool 1 until abutment of the guide finger 5 at the bottom of a pre-hole 6 of limited depth, as shown in diagrams (i) and (j).
- FIG. 6 illustrates another specificity of possible implementation of a bit of the type shown in FIG.
- a drill 25 is installed and / or is integral with the guide apparatus 28, the latter not carrying a tool 1.
- a shallow pre-hole 6 is made in the bone material 7 by means of the drill 25 as shown in the diagram (q).
- the drill 25 is removed from the front hole 6 to allow the mounting of the tool 1 on the guide apparatus 28, as shown in the diagram (r).
- the distal end of the drill 25 is then introduced into the front hole 6 to form the guide pin 5, and the bone material 7 is perforated by the tool 1, as shown in the diagram (s).
- the drill 25 progresses within the bone material 7 by perforating it concomitantly and in advance of the progression of the tool 1 in the bone material 7.
- the bit is provided with abutment means 23.
- the tool 1 and / or the guiding apparatus 28 comprises a stop member constituting these abutment means 23 and formed by a collar or the like.
- the penetration stroke of the tool 1 within the bone material 7 is limited by the abutment means 23, as illustrated in the diagram (s), so that the practitioner is exempted from monitoring the bone. the extent of the penetration of the tool 1 into the bone material 7.
- the abutment means 23 are provided at a predetermined distance from the distal end of the tool 1.
- the bit is chosen by the practitioner among a set of drill bits having abutment means 23 placed at a distance respectively from the distal end of the tool 1, or the drill bit is equipped with adjustment means 24 of this distance, as in the exemplary embodiment shown.
- Fig.5 illustrates specificities of implementation of a bit of the type shown in Fig.1.
- the operation of perforating is more particularly to cause penetration of the tool 1 in the bone material 7 until the complete retraction of the guide pin 5 within the axial recess 2 of tool 1, as shown in diagrams (n) and (o).
- the operation of exerting a thrust against the core 20 is to cause a thrust against the rod 4 to remove the guide pin 5 from the axial recess 2 of the tool 1, which guide pin 5 is
- the core 20 is extracted from the tool 1, which is made easily accessible to the practitioner.
- a drill bit incorporates abutment means 23 for limiting the axial penetration of the tool 1 inside the material to a predetermined stroke. bone. This limitation of stroke is obtained by an axial abutment of the trephine against the cortical bone.
- the bit is composed of the tool 1 and the gripping shank 3. Such a bit is likely not to integrate a guiding apparatus 28 of the tool 1 during the penetration of the material bone, as previously described.
- the abutment means 23 consist of the distal shoulder of a flange 26 or the like that the tool 1 comprises.
- This flange 26 is provided either at the outer periphery of the tool 1, as shown in Fig.7, is inside the axial recess of the tool 1, as shown in Fig.8.
- the abutment means 23 are placed at a distance d from the distal tip of the tool 1 which is predefined.
- the abutment means 23 consist of the distal end of an abutment member 27 mounted axially movable on the tool 1.
- This abutment member 27 consists, for example, of a sleeve threaded onto the tool, the distal end of which constitutes the abutment means 23.
- the movable mounting of the abutment member 27 makes it possible to adjust the separation distance d between the abutment means 23 and the distal end of the abutment. tool 1.
- the means of mobility of the stop member 27 constitute adjustment means 24 of this distance d.
- These adjustment means combine for example a sliding assembly of the stop member 27 on the tool, and means for immobilizing the stop member 27 at a desired axial position.
- the adjustment means 24 are constituted by a mounting of the abutment member 23 on the tool 1 by screwing, which can be completed by not shown immobilization means.
- immobilization means are for example constituted by a specific immobilizing member in joint engagement on the tool 1 and on the abutment member 27, or by hardening the mobility of the abutment member 27, implemented a flexible mass of interposition between the stop member 27 and the tool 1.
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Veterinary Medicine (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Medical Informatics (AREA)
- Dentistry (AREA)
- Molecular Biology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Transplantation (AREA)
- Epidemiology (AREA)
- Hematology (AREA)
- Immunology (AREA)
- Rheumatology (AREA)
- Pathology (AREA)
- Surgical Instruments (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SM200900003T SMP200900003B (it) | 2006-06-14 | 2007-06-12 | Trapano per il prelievo di una carota ossea, dotato di un dispositivo di guida all'interno dell'osso, che associa una punta e uno strumento di taglio tubolare |
ES200850101A ES2363236B1 (es) | 2006-06-14 | 2007-06-12 | Trepano para la extraccion de un cilindro oseo, provisto de un dispositivo de guiado al interior del hueso asociando una broca y una herramienta de corte tubular. |
US12/308,389 US20090209964A1 (en) | 2006-06-14 | 2007-06-12 | Trephine designed for removal of a bone core and equipped with a device guiding it inside the bone and combining a drill bit and tubular cutting tool |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR06/05291 | 2006-06-14 | ||
FR0605291A FR2902309B1 (fr) | 2006-06-14 | 2006-06-14 | Trepan de prelevement osseux avec element interne recuperateur guide |
FR06/10213 | 2006-11-22 | ||
FR0610213A FR2902310B1 (fr) | 2006-06-14 | 2006-11-22 | Trepan pour le prelevement d'une carotte osseuse,muni d'un dispositif de guidage a l'interieur de l'os,de retrait de la carotte hors du trepan,et d'irrigation lors du prelevement osseux. |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2007144502A2 true WO2007144502A2 (fr) | 2007-12-21 |
WO2007144502A3 WO2007144502A3 (fr) | 2008-02-14 |
Family
ID=38312618
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2007/000971 WO2007144502A2 (fr) | 2006-06-14 | 2007-06-12 | Trépan pour le prélèvement d'une carotte osseuse, muni d'un dispositif de guidage à l'intérieur de l'os associant un foret et un outil de coupe tubulaire |
Country Status (5)
Country | Link |
---|---|
US (1) | US20090209964A1 (fr) |
ES (1) | ES2363236B1 (fr) |
FR (1) | FR2902310B1 (fr) |
SM (1) | SMP200900003B (fr) |
WO (1) | WO2007144502A2 (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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ES2337436A1 (es) * | 2008-10-22 | 2010-04-23 | Hospital Clinic I Provincial De Barcelona | Trefina para la extraccion de un injerto oseo y para la colocacion de dicho injerto. |
CN102038537A (zh) * | 2011-02-10 | 2011-05-04 | 孙涛 | 远端自动切割骨芯提取装置 |
CN102217971A (zh) * | 2011-05-30 | 2011-10-19 | 陈建庭 | 取骨器 |
CN102335032A (zh) * | 2010-07-26 | 2012-02-01 | 张文开 | 取骨装置 |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
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FR2940756B1 (fr) * | 2009-01-06 | 2011-10-28 | Jean Claude Yeung | Bistouri circulaire auto-guide par un element central |
CN102475580B (zh) * | 2010-11-26 | 2014-01-22 | 郑伯堃 | 牙齿定位模板及其制造方法与组件 |
US9763674B2 (en) * | 2013-12-26 | 2017-09-19 | Ethicon Llc | Ultrasonic bone cutting instrument |
US9925068B2 (en) | 2014-05-30 | 2018-03-27 | Treace Medical Concepts, Inc. | Bone harvester and bone marrow removal system and method |
ITMO20140289A1 (it) * | 2014-10-16 | 2016-04-16 | Promev S R L | Dispositivo perforatore cranico |
US10485558B1 (en) * | 2015-07-31 | 2019-11-26 | Joshua Cook | Apparatus and method for harvesting bone |
US20170143351A1 (en) * | 2015-11-23 | 2017-05-25 | Nelorussi Corporation | Implant placement trephine, prepackaged and sized implant / trephine kit, and methods of use |
WO2018152529A1 (fr) * | 2017-02-20 | 2018-08-23 | Paragon 28, Inc. | Implants, dispositifs, instruments, systèmes et procédés de formation et d'implantation |
CN107812986B (zh) * | 2017-10-31 | 2024-01-30 | 合肥凯邦电机有限公司 | 拆卸用钻头及具有其的钻床组件 |
CA3122698A1 (fr) | 2018-12-13 | 2020-06-18 | Paragon 28, Inc. | Distracteurs ayant des palettes pouvant etre fixees, dispositifs d'impaction et procedes pour une utilisation dans le remplacement total de la cheville |
CA3122542A1 (fr) | 2018-12-13 | 2020-06-18 | Paragon 28, Inc. | Instruments d'alignement et procedes utilises lors d'un remplacement total de cheville |
US11517330B2 (en) | 2018-12-21 | 2022-12-06 | Tarek O. Souryal | Pregnant guide pin drill passer |
US20210022831A1 (en) * | 2019-03-26 | 2021-01-28 | Cornerstone Specialty Products, Llc | Endodontics surgical stent |
CN110507429A (zh) * | 2019-09-29 | 2019-11-29 | 浙江大学 | 颌骨异物取出手术导板 |
NL2026444B1 (en) | 2020-09-10 | 2022-05-09 | Xilloc Holding B V | Surgical cutter |
US11660194B1 (en) | 2022-06-20 | 2023-05-30 | University Of Utah Research Foundation | Cartilage and bone harvest and delivery system and methods |
US11523834B1 (en) | 2022-06-20 | 2022-12-13 | University Of Utah Research Foundation | Cartilage and bone harvest and delivery system and methods |
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ATE290824T1 (de) * | 1998-09-29 | 2005-04-15 | Zimmer Gmbh | Hohlfräser für gewebe |
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- 2007-06-12 ES ES200850101A patent/ES2363236B1/es not_active Expired - Fee Related
- 2007-06-12 WO PCT/FR2007/000971 patent/WO2007144502A2/fr active Application Filing
- 2007-06-12 US US12/308,389 patent/US20090209964A1/en not_active Abandoned
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DE3800482A1 (de) * | 1988-01-11 | 1989-07-20 | List Heinz Juergen | Chirurgisches bohrwerkzeug |
RU2020887C1 (ru) * | 1991-03-04 | 1994-10-15 | Научно-исследовательский центр Татарстана "Восстановительная травматология и ортопедия" | Устройство для забора костных трансплантатов |
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CN102335032A (zh) * | 2010-07-26 | 2012-02-01 | 张文开 | 取骨装置 |
CN102038537A (zh) * | 2011-02-10 | 2011-05-04 | 孙涛 | 远端自动切割骨芯提取装置 |
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Also Published As
Publication number | Publication date |
---|---|
FR2902310B1 (fr) | 2014-07-18 |
US20090209964A1 (en) | 2009-08-20 |
FR2902310A1 (fr) | 2007-12-21 |
ES2363236A1 (es) | 2011-07-27 |
SMP200900003B (it) | 2010-01-19 |
WO2007144502A3 (fr) | 2008-02-14 |
SMAP200900003A (it) | 2009-01-14 |
ES2363236B1 (es) | 2012-06-19 |
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