WO2021028636A2 - Implant intramédullaire pour ostéotomie transversale - Google Patents
Implant intramédullaire pour ostéotomie transversale Download PDFInfo
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- WO2021028636A2 WO2021028636A2 PCT/FR2020/051448 FR2020051448W WO2021028636A2 WO 2021028636 A2 WO2021028636 A2 WO 2021028636A2 FR 2020051448 W FR2020051448 W FR 2020051448W WO 2021028636 A2 WO2021028636 A2 WO 2021028636A2
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- WIPO (PCT)
- Prior art keywords
- implant
- tool
- hole
- metatarsal
- plate
- Prior art date
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- 239000007943 implant Substances 0.000 title claims abstract description 277
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 39
- 239000012634 fragment Substances 0.000 claims abstract description 28
- 239000007787 solid Substances 0.000 claims abstract description 7
- 210000001872 metatarsal bone Anatomy 0.000 claims description 213
- 238000013519 translation Methods 0.000 claims description 34
- 230000000295 complement effect Effects 0.000 claims description 14
- 238000005553 drilling Methods 0.000 claims description 11
- 238000005259 measurement Methods 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000010079 rubber tapping Methods 0.000 claims description 4
- 210000003275 diaphysis Anatomy 0.000 description 73
- 238000003780 insertion Methods 0.000 description 16
- 230000037431 insertion Effects 0.000 description 16
- 206010061159 Foot deformity Diseases 0.000 description 13
- 208000001963 Hallux Valgus Diseases 0.000 description 13
- 238000004873 anchoring Methods 0.000 description 13
- 238000001356 surgical procedure Methods 0.000 description 9
- 210000002683 foot Anatomy 0.000 description 8
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- 210000001255 hallux Anatomy 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000013459 approach Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 210000004744 fore-foot Anatomy 0.000 description 4
- 238000000926 separation method Methods 0.000 description 3
- 208000002193 Pain Diseases 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000036407 pain Effects 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 210000003371 toe Anatomy 0.000 description 2
- 206010006585 Bunion Diseases 0.000 description 1
- 206010006811 Bursitis Diseases 0.000 description 1
- 201000004624 Dermatitis Diseases 0.000 description 1
- 206010020649 Hyperkeratosis Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000002068 genetic effect Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/72—Intramedullary pins, nails or other devices
- A61B17/7291—Intramedullary pins, nails or other devices for small bones, e.g. in the foot, ankle, hand or wrist
-
- 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
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
- A61B17/1725—Guides or aligning means for drills, mills, pins or wires for applying transverse screws or pins through intramedullary nails or pins
-
- 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
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
- A61B17/1728—Guides or aligning means for drills, mills, pins or wires for holes for bone plates or plate screws
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- A—HUMAN NECESSITIES
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- 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
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
- A61B17/1739—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body
- A61B17/1775—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body for the foot or ankle
-
- 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
- A61B17/72—Intramedullary pins, nails or other devices
- A61B17/7233—Intramedullary pins, nails or other devices with special means of locking the nail to the bone
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- A—HUMAN NECESSITIES
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- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8061—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates specially adapted for particular bones
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- 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
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/8866—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices for gripping or pushing bones, e.g. approximators
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- A—HUMAN NECESSITIES
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- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/92—Impactors or extractors, e.g. for removing intramedullary devices
- A61B17/921—Impactors or extractors, e.g. for removing intramedullary devices for intramedullary devices
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- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/164—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans intramedullary
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- A—HUMAN NECESSITIES
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- 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
- A61B17/72—Intramedullary pins, nails or other devices
- A61B17/7283—Intramedullary pins, nails or other devices with special cross-section of the nail
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- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/8872—Instruments for putting said fixation devices against or away from the bone
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/8897—Guide wires or guide pins
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/564—Methods for bone or joint treatment
- A61B2017/565—Methods for bone or joint treatment for surgical correction of axial deviation, e.g. hallux valgus or genu valgus
Definitions
- TITLE Intramedullary implant for transverse osteotomy
- the present invention relates to a surgical implant suitable for the treatment of a hallux valgus by transverse osteotomy.
- the deformity called hallux valgus is one of the most common deformities of the forefoot and refers to a deviation of the big toe (hallux) towards the other toes.
- hallux valgus corresponds to a deviation “inward” of the first metatarsal (that is to say towards the other foot) and a deviation “outside” of the first phalanx of the big toe (that is i.e. towards the other toes).
- Hallux valgus can therefore be a source of many inconveniences for the affected person: in addition to being unsightly, hallux valgus can result in pain when walking in the big toe or the arch of the foot (with possibly the appearance of calluses under the forefoot), as well as by difficulty putting on shoes due to the induced triangular shape of the forefoot, incompatible with many shoe models.
- the bony protrusion of the end of the first metatarsal causes friction of the skin in contact with the medial edge of the shoe: this prolonged friction can lead to inflammation of the skin and the appearance of bursitis filled with liquid, susceptible to infection.
- percutaneous or “open” surgeries can be performed for the treatment of hallux valgus.
- “open” surgical techniques it is known practice to perform a transverse osteotomy (also called “Bosch osteotomy), consisting in cutting the head of the metatarsal perpendicular to its longitudinal axis.
- the thus severed head of the metatarsal is then moved in lateral translation with respect to the diaphysis of the metatarsal so as to correct the deformation of the foot and realign the metatarsal and the first phalanx.
- document FR3004920 describes such an intramedullary implant comprising a fixing plate adapted to be screwed onto the head of the metatarsal and an elongated tail intended to be inserted into the medullary canal of the diaphysis of the metatarsal.
- the implants known from the state of the art have the drawback of making it impossible to adjust the axial rotation (along the longitudinal axis of the metatarsal) of the head of the metatarsal once the implant has been inserted into the medullary canal of the metatarsal shaft.
- the proximal part of the implants is generally included in the same plane as the distal part, it is impossible to vary the position of the metatarsal head relative to the shaft of the metatarsal in the medial / lateral plane once these implants are inserted into the medullary canal of the metatarsal shaft.
- the implants already known require a very complex operating technique and require great precision before inserting them into the medullary canal of the diaphysis of the metatarsal.
- documents EP3476319, US2016 / 354124 and US2018 / 070995 are also known which describe an implant, of the intramedullary implant type, comprising an extramedullary portion called platinum having a flat lateral face conformed to be fixed on a bone fragment, an intramedullary portion shaped to be inserted into a medullary canal of a first bone fragment, said intramedullary portion being a solid substantially of revolution centered on a longitudinal axis, and said longitudinal axis being parallel to the face lateral portion of the extramedullary portion which extends to the distal end of the intramedullary portion, and an intermediate portion connecting said plate to said intramedullary portion.
- this type of implant makes it possible to adjust the position of the head of the metatarsal in axial rotation with respect to the shaft of the metatarsal by causing the intramedullary portion to perform a rotational movement around its longitudinal axis, it is not guided and involves an invasive surgical technique.
- the object of the present invention is to resolve all or part of these drawbacks, by proposing an implant which makes it possible to adjust in axial rotation the position of the head of the metatarsal relative to the diaphysis of the metatarsal once the implant has been inserted into the medullary canal. of the metatarsal shaft.
- Another object of the invention is to provide an implant making it possible to vary the position of the head of the metatarsal in the medial / lateral plane.
- Yet another object of the invention is to provide dedicated surgical instrumentation, making it possible to guide the manipulation and insertion of the implant in order to make these operations more precise, simpler to perform and less invasive.
- an implant of the intramedullary implant type, suitable for fixing a first bone fragment to a second bone fragment, said implant comprising:
- said implant being remarkable in that the plate comprises a securing device making it possible to releasably secure said implant to a tool suitable for preparing the attachment of said implant to the metatarsal.
- the first bone fragment corresponds to a diaphysis of a metatarsal and the second bone fragment corresponds to a head of this same metatarsal: the implant is then in particular adapted to fix and maintain in position this head of a metatarsal by compared to this diaphysis of the same metatarsal following a transverse osteotomy: in position, the keel, located in the proximal part of the implant, is inserted into the medullary canal of the metatarsal shaft and the plate, located in part distal to the implant, is attached to the head of the metatarsal.
- the implant can perform a rotational movement around this same longitudinal axis once this implant has been inserted into the canal. medulla of the diaphysis of the metatarsal.
- the shape of the keel is invariant in rotation around this longitudinal axis: the rotation of the keel in the medullary canal of the diaphysis of the metatarsal can thus be carried out without any additional deformation of this medullary canal, once the implant inserted.
- such a tool can, for example, make it possible to manipulate the implant from a distance or to guide the practitioner during steps of drilling and then of screwing the implant onto the metatarsal.
- This tool specially dedicated to the implant according to the invention, thus makes it possible to insert and fix said implant by a minimally invasive operating technique, and to guide the practitioner during the operation.
- the device for securing the implant is thus designed to cooperate with a complementary device for securing the tool, in order to allow coupling of the implant to the tool.
- the keel has a cylindrical shape.
- the plate comprises at least two threaded holes passing through the plate between the lateral face and an opposite medial face, each of said threaded holes having a housing opening onto the medial face and adapted to receive the head of a screw. 'anchoring.
- the plate can thus be fixed by screwing, thanks to adapted anchoring screws and from the medial face of the implant, on the head of the metatarsal.
- the tapped holes extend in a direction normal to the side face.
- the plate comprises an indexing means making it possible to index the position of the implant relative to the tool with a view to securing the tool on the implant.
- the indexing means consists of an indexing orifice formed in the plate and opening onto the medial face.
- the securing device comprises a threaded hole made in the plate and opening onto the medial face.
- the threaded hole of the tie-down device is a threaded hole of the tie-down device
- the securing device thus makes it possible to position and orient the implant relative to the tool thanks to the indexing means, then to removably fix the tool on the implant (once the implant is positioned) thanks to, for example, to a screw of the tool cooperating with the threaded hole of the securing device.
- the threaded hole of the securing device extends in a direction normal to the lateral face of the plate.
- the tapped hole of the securing device is identical to the tapped holes of the plate: it is thus possible, once the implant is fixed to the metatarsal and detached from the tool, to use this tapped hole of the securing device. to strengthen the fixation of the stage on the head of the metatarsal by means of an additional anchor screw.
- the keel has at least one hole passing through said keel in a transverse direction, for example orthogonal, to the longitudinal axis and adapted to receive an anchor screw.
- the hole or holes in the keel have an internal thread, adapted to cooperate with an anchoring screw.
- these anchor screws screwed from the medial cortex of the diaphysis of the metatarsal so as to pass through the keel of the implant in the medullary canal of the metatarsal diaphysis through the hole (s) in the keel, block any rotational movement of the implant around the longitudinal axis of the keel.
- this or these holes and these adapted anchoring screws make it possible to freeze the position of the head of the metatarsal in rotation with respect to the diaphysis of the metatarsal once the position desired by the practitioner has been obtained by rotating the keel around its axis. longitudinal.
- the hole or holes in the keel extend in a direction normal to the lateral face of the plate.
- the hole or holes in the keel extend in a direction not parallel to the direction normal to the lateral face of the plate.
- the hole or holes in the keel have a medial mouth provided with a peripheral chamfer.
- this peripheral chamfer is to facilitate the insertion of drills into the tapped holes of the keel, in order to make holes which then allow the anchoring screws to be inserted therein.
- the keel comprises an internal duct centered on the longitudinal axis, said internal duct opening out at a proximal end of the keel, passes through the intermediate portion and opens out at a distal end of said intermediate portion.
- This internal duct is to guide the insertion of the implant into the medullary canal of the diaphysis of the metatarsal.
- the intermediate portion has a conical shape centered on the longitudinal axis.
- the conical shape of the intermediate portion enables the junction between the plate and the implant keel to be made while having a large cross section: thanks to this, the intermediate portion offers high mechanical resistance in bending and makes it possible to avoid deformation of the implant under physiological load conditions.
- the intermediate portion comprises a hole made through said intermediate portion, said hole extending in a direction not parallel to the direction normal to the lateral face of the plate.
- This hole may optionally have an internal thread, so as to cooperate with an anchoring screw.
- the implant to be fixed to the diaphysis of the metatarsal by screwing an anchoring screw into the lateral cortex of the diaphysis of the metatarsal and
- the screwing of the anchor screw in the hole allows to exert an interfragmentary pressure by compressing the head of the metatarsal on the shaft of the metatarsal.
- the threaded hole of the intermediate portion has a housing opening onto a medial face of the intermediate portion, said housing being adapted to receive the head of an anchoring screw.
- the head of this anchor screw is received in a suitable housing so that it does not not protrude from the medial face of the intermediate portion.
- This characteristic thus makes it possible to make the implant as less invasive as possible.
- the threaded hole of the intermediate portion extends in a direction forming an angle with the lateral face of the plate, the measurement of which is between 60 ° and 80 °.
- the keel has at least two holes passing through said keel and adapted to receive an anchor screw, the first of these holes extending in a direction parallel to the direction normal to the lateral face of the keel. plate, and the second one of these holes extending in a direction not parallel to said normal direction.
- the second hole in the keel extends in a direction that is not orthogonal to the longitudinal axis, and obliquely with respect to the first hole in the keel: this second hole thus fulfills the same function as the hole threaded of the intermediate portion previously described.
- this second hole makes it possible, in a similar manner, to fix (thanks to an anchoring screw) the implant on the diaphysis of the metatarsal while exerting pressure interfragmentary by compressing the head of the metatarsal on the shaft of the metatarsal.
- this second hole is made in the keel in combination with the tapped hole of the intermediate portion, or as a replacement for the latter.
- the invention also relates to a range of implants comprising several implants as described above, said implants each having a lateral offset distance, separating the lateral face of the plate from the longitudinal axis, of separate measurement.
- This range of implants allows the position of the metatarsal head to be adjusted in relation to the metatarsal shaft in the medial / lateral plane.
- Such a range of implants therefore allows a correction of the hallux valgus that is more precise and adapted to each patient, the practitioner being able to select before the surgical operation the implant from the range best suited to each particular deformation to be corrected.
- the implants have a lateral offset distance, the measurement of which is between 0 millimeters and 10 millimeters.
- the implants are as described above and each have a separation distance, separating a proximal end of the plate from the second hole in the keel, of separate measurement.
- This characteristic makes it possible to secure each of the implants in the implant range with the same tool, this tool making it possible to manipulate each of them and being adapted to cooperate with their respective securing device.
- the invention also relates to surgical instrumentation comprising a tool suitable for preparing the fixation, on a bone, of an implant as described above, said tool comprising:
- a frame having a distal part and a proximal part
- a mobile body having an opposite lower face and an opposite upper face, comprising a complementary securing device adapted to cooperate with the securing device of the plate, so as to fix the tool on the implant, and said body mobile being movable in translation relative to the frame along a translation axis parallel to the longitudinal axis of the implant when the tool is fixed on the implant, and
- the attachment device makes it possible to fix the frame on the diaphysis of a metatarsal to which the implant is also fixed, as previously described.
- the tool allows (once it is secured to the implant thanks to the cooperation between the implant securing device and the additional securing device of the tool) to manipulate the implant remotely or to guide the practitioner during the steps of drilling and then screwing the implant on the metatarsal.
- the tool makes it possible to apply interfragmentary compression between the head of the metatarsal and the diaphyseal shaft of the metatarsal.
- the frame is fixed to the diaphysis of the metatarsal by means of the attachment device while the mobile body is integral with the head of the metatarsal (because the mobile body cooperates with the securing device of the implant located on the plate thereof, itself being fixed to the head of the metatarsal): the translational movement of the mobile body relative to the frame therefore amounts to moving the head of the metatarsal in translation relative to the diaphysis of the metatarsal.
- the surgical instrumentation has at least one pin intended to be fixed on the diaphysis of the metatarsal, and the device for attaching the tool comprises at least one hole made through the proximal part of the frame so to allow the passage of said at least one pin.
- the frame of the tool comprises, in its distal part, an actuator adapted to move the movable body along the axis of translation.
- the actuator of the tool comprises a translation wheel making it possible to drive in rotation a threaded screw cooperating with a threaded hole made in the movable body along the translation axis.
- the practitioner can therefore move the mobile body along the axis of translation relative to the frame, and thus vary the intensity of the interfragmentary compression.
- the complementary device for securing the tool comprises an indexing pin configured to cooperate with the indexing hole of the plate of an implant as described above, so as to index the position of the implant relative to the tool for securing the tool on the implant.
- the pitch of the translation wheel is reversed, that is to say that a rotation of the wheel in the clockwise direction causes a proximal displacement of the movable body.
- the complementary device for securing the tool comprises a securing rod, said securing rod having a threaded end and being configured to cooperate with the tapped hole of the securing device of an implant such as previously described, so as to removably fix the tool on said implant.
- the indexing pin can thus be inserted into the indexing hole of the implant to position the tool relative to the implant, and the threaded end of the lashing rod can then be inserted into the hole thread of the implant securement device, to secure the tool to the implant.
- the securing rod also makes it possible to orientate the position of the tool in rotation relative to the implant, once the indexing pin has been inserted into the indexing hole.
- the securing rod of the tool is connected to a securing wheel making it possible to drive said securing rod in rotation, the securing wheel being arranged opposite the upper face of the movable body. and the threaded end of the tie-down rod being disposed opposite the underside of the movable body.
- this lashing wheel it is thus possible for the practitioner to manipulate the lashing rod from a distance (and from the upper face of the tool): the practitioner can therefore fix the tool on the implant. in a simple way and without requiring a large handling approach.
- the movable body of the tool comprises at least one guide hole formed through it, the guide hole (s) being configured so that, when the tool is fixed on an implant as described above, these are located opposite the hole (s) of the keel of the implant and extend in a guiding direction collinear with that of said holes .
- this or these guide holes makes it possible to guide the practitioner in fixing the implant on the diaphysis of the metatarsal by means of anchoring screws inserted in the hole or holes of the keel of said implant.
- the hole (s) in the keel are found directly opposite the guide hole (s) of the guide: it is then sufficient to make holes in the guide direction indicated by the guide hole (s) and then to insert anchor screws therein.
- the practitioner can therefore easily identify the locations of the holes to be made without risk of error.
- the surgical instrumentation comprises at least one aiming device configured to be inserted into at least one of the guide holes of the mobile body of the tool and provided to guide a drilling or screwing instrument according to the guidance direction. .
- Such an aiming device once inserted in a guide hole, can make it possible to guide the positioning of the drills and screws used for fixing the implant to the diaphysis of the metatarsal.
- the invention also relates to a surgical kit suitable for fixing a first bone fragment to a second bone fragment following a transverse osteotomy, comprising:
- a surgical kit suitable for fixing a first bone fragment to a second bone fragment following a transverse osteotomy comprising:
- the locked screws :
- These locked screws may have a thread extending over almost their entire length and a threaded head also cooperating with the complementary housings of the threaded holes of the plate and of the intermediate portion of the implant, thus allowing a solid fixing and reliable with the implant.
- the self-tapping elements make it easier to insert the locked screws into the bone of the head of the metatarsal and the shaft of the metatarsal.
- the stop screws comprise a head having a collar adapted to come into abutment against the medial cortex of the metatarsal when said stop screws are inserted into the holes of the keel.
- stop screws are intended to be screwed from the cortex of the metatarsal shaft and through the holes in the implant keel.
- the presence of the collar allows the practitioner, during the insertion of a stop screw, to identify the position of maximum insertion of this one because, when the collar comes into contact with the medial cortex of the metatarsal shaft the tightening torque increases sharply.
- this characteristic makes it possible to make the surgical technique of fixing the implant according to the invention minimally invasive.
- the stop screws have a thread whose width is between 0.1 millimeter and 0.3 millimeter.
- this thread guarantees good grip of the stop screws in the metatarsal and good coaxiality between them and the tapped holes of the implant.
- the stop screws are designed to be able to be inserted into the guide holes of the mobile body of the tool.
- FIG. 1 is a schematic dorsal view of the result of a transverse osteotomy
- FIG. 2 is a perspective view of an implant according to the invention.
- FIG. 3 is a transverse view of an implant according to the invention.
- FIG. 4 is a sagittal sectional view of an implant according to the invention.
- FIG. 5 is a top or transverse view of an implant according to the invention fixed to a metatarsal
- FIG. 6 is a detailed view of the keel of an implant according to the invention.
- FIG. 7 is a sagittal view ( Figure 7a) and a sectional view along the transverse plane ( Figure 7b) of an implant according to a second embodiment of the invention
- FIG. 8 is a detail view of a locked screw
- FIG. 9 is a detailed view of a stop screw
- FIG. 10 is a sagittal view of an implant according to the invention fixed to a metatarsal
- FIG. 11 is a front (or front) view of an implant according to the invention fixed to a metatarsal
- FIG. 12 is a view of a range comprising several implants according to the invention
- FIG. 13 is a perspective view of a tool according to the invention
- FIG. 14 is a side view of a tool according to the invention.
- FIG. 15 is a top view of a tool according to the invention.
- FIG. 16 is an illustration of the translation of the head of a metatarsal in a transverse osteotomy
- FIG. 17 is a view of a stage of conformation of the medullary canal of the diaphysis of a metatarsal
- FIG. 18 is a view of a step of impaction of an implant according to the invention in the medullary canal of the diaphysis of a metatarsal,
- FIG. 19 is a view of a step of piercing the head of a metatarsal
- FIG. 20 is a view of a step of fixing an implant according to the invention on the head of a metatarsal
- FIG. 21 is a view of a tool according to the invention fixed to an implant according to the invention
- FIG. 22 is a view of a step of compressing the head of a metatarsal against the shaft shaft of the same metatarsal
- FIG. 23 is a view of a step of preparing the fixation of an implant according to the invention on the diaphysis of a metatarsal
- FIG. 24 is a view of a step of fixing an implant according to the invention on the diaphysis of a metatarsal
- FIG. 25 is a view of a step for preparing the fixation of an implant according to a second embodiment of the invention on the diaphysis of a metatarsal
- FIG. 26 is a view of a preparation step for the fixation of two implants from a range of implants on the shaft of a metatarsal
- FIG. 27 is a view of a step in drilling the diaphysis of a metatarsal
- FIG. 28 is a view of a step of fixing an implant according to the invention on the head of a metatarsal.
- Figure 1 illustrates the result of a transverse osteotomy performed on a metatarsal in order to correct a hallux valgus.
- Figure 1a shows a metatarsal M and a first phalanx P of a foot affected by hallux valgus
- Figure lb showing the metatarsal M and phalanx P after the transverse osteotomy.
- the metatarsal M has a shaft 1, a head 2 and extends along a longitudinal axis M1.
- the head 2 of the metatarsal M is sharply deflected "inward" of the foot, in a medial direction, and creates a bony protrusion which may be painful for the patient.
- a rectilinear cut D was made in the diaphysis 1 of the metatarsal M, in a transverse direction, orthogonal to the longitudinal axis M1.
- the head 2 of the metatarsal M can then be moved in translation with respect to the shaft 1 of the metatarsal M in this same transverse direction, so as to attenuate the bony protrusion and reposition the first phalanx P in a configuration substantially collinear with the longitudinal axis M1, as can be seen in Figure 1b.
- the head 2 of the metatarsal M is temporarily held in its new position by a Kirschner wire B, inserted into the intramedullary part of the diaphysis 1 of the metatarsal M.
- an implant 3 according to the invention visible in FIG. 2 in perspective, and in FIG. 3 in a view. transverse.
- This implant 3 comprises a keel 4, intended to be inserted into the medullary canal of the diaphysis 1 of the metatarsal M, a plate 5, intended to be fixed on the head 2 of the metatarsal M, and an intermediate portion 6 connecting the keel 4 to plate 5.
- the keel 4 extends along a longitudinal axis 41 and has a generally cylindrical shape, centered on the longitudinal axis 41.
- the keel 4 has a proximal end 42 of lower section than the cylindrical portion of said keel 4.
- the plate 5 has a flat lateral face 51, adapted to be placed in contact with the medial face of the head 2 of the metatarsal M, is configured so that the longitudinal axis 41 is orthogonal to a direction N normal to this lateral face 51 plate 5.
- the intermediate portion extends in the continuity of the keel 4 along the longitudinal axis 41 and makes the junction between this keel 4 and the plate 5.
- This intermediate portion thus has a conical (or frustoconical) shape centered on the longitudinal axis 41: this conical shape gives the implant 3 good flexural strength when the latter is in position, fixed on the metatarsal M.
- the implant 3 further comprises an internal duct 7, visible in FIG. 4, of circular section and centered on the longitudinal axis 41.
- This internal duct 7 opens at the proximal end 42 of the keel 4 and at a distal end 61 of the intermediate portion 6.
- the implant 3 can be fixed to the metatarsal M, as shown in FIG. 5, by means of anchoring screws inserted into the bone of the metatarsal M and cooperating with holes made in the implant 3.
- the position of the implant 3 is fixed thanks to:
- a locking screw 9 inserted into the shaft 1 of the metatarsal M and cooperating with a threaded hole 62 made through in the intermediate portion 6.
- the holes 43 and the threaded holes 52 are provided through the keel 4 and the plate 5 respectively in the direction N, orthogonal to the longitudinal axis 41: this orhogonality makes it possible in particular to effectively block any rotational movement of the implant 3 around the longitudinal axis 41.
- the threaded hole 62 extends in a direction 63 oblique with respect to the direction N, this direction 63 forming with the lateral face 51 of the plate 5, in transverse view, an angle a whose measurement is strictly less than 90 °.
- the direction 63 forms an angle ⁇ identical with the longitudinal axis 41.
- the measurement of the angle ⁇ is, in this embodiment, equal to 70 °.
- the threaded holes 52 have a housing 521 opening onto the medial face 53, opposite to the lateral face 51, of the plate 5.
- This housing 521 is adapted to receive the head 91 of a locked screw 9, so that, when this locked screw 9 is fully screwed into the tapped hole 521, the head 91 thereof is received in the housing 521 and does not not protrude from the medial face 53 of the plate 5, as visible in FIG. 3: in this way, the implant 3 is the least invasive possible.
- the threaded hole 62 has an identical housing 521, so that the locked screw 9 does not protrude from the intermediate portion 6.
- the holes 43 have for their part a medial mouth 431 provided with a peripheral chamfer 432 visible in Figures 6a and 6b.
- This peripheral chamfer 432 makes it possible to facilitate the insertion into the holes 43 through the medial mouth 431 of drills making the holes in the diaphysis of the metatarsal M in which the stop screws 8 are then introduced, as well as the introduction of the screws to stopper 8 themselves.
- Figures 7a and 7b show a second embodiment of the implant 3 according to the invention, in which the intermediate portion 6 does not have a threaded hole.
- the keel 4 has two through holes 43 each extending in a different direction:
- This second hole 434 fulfills the same functions as the threaded hole 62 of the first embodiment described by the preceding figures 1 to 7, namely to fix the implant 3 on the diaphysis 1 of the metatarsal M by screwing an anchor screw and compress the head 2 of the metatarsal M against the shaft 12 of the metatarsal M (and thus increase the interfragmentary pressure), due to the obliquity of the 4341 direction.
- the replacement of the tapped hole 62 of the intermediate portion 6 by the second hole 434 of the pin 4 makes it possible to make the surgical technique less invasive, access to the tapped hole 62 (to perform a drilling step, then a screwing step of 'an anchor screw) requiring a greater approach than access to the second hole 434.
- the first hole 433 and the second hole 434 present, in the same way as the holes 43 above, a medial peripheral chamfer 432 fulfilling the same function.
- FIG. 8 makes it possible to detail the particular characteristics of the locked screws 9.
- Each locked screw 9 has a head 91 and a threaded rod 92, the threaded rod having a thread over almost all of its length up to one end 921.
- the head 91 also has a thread and is of complementary shape to the housings 521: in this way, the locked screws 9 are firmly fixed to the implant 3, and the movements of the latter once in position are extremely limited.
- the threaded rod 92 also comprises, near its end 921, self-tapping elements 922, making it possible to facilitate the insertion of the locked screws 9 into the bone of the shaft 1 of the metatarsal M or of the head 1 of the metatarsal M.
- FIG. 9 represents a stop screw 8, the shape of which is specially adapted for the fixation of the implant 3 in the diaphysis 1 of the metatarsal M.
- This stop screw 8 has a head 81 and a threaded rod 82.
- the threaded rod 82 has a wide thread, for example having a thickness E of about 0.2 millimeters, making it possible to provide a large contact surface between the stop screw 8 and the bone of the diaphysis 1 of the metatarsal M d 'on the one hand, and between the stop screw 8 and the keel 4, in which the holes 43 are formed, on the other hand.
- the head 81 of the stop screw 8 is also threaded and has a flange 811, the diameter of which is greater than that of the external thread 812 of the head 81.
- the difference between the diameter of the collar 811 and that of the external thread 812 is between 1 millimeter and 3 millimeters, for example 1.2 millimeters.
- This collar 811 is intended to rest on the outer cortex of the diaphysis 1 of the metatarsal M when screwing the stop screw 8 into the holes 43 of the keel, and its utility will be explained below.
- the particular structure of the implant 3 has the advantage of allowing the practitioner to easily position the head 2 of the metatarsal M relative to the diaphysis
- the head 2 of the metatarsal M is thus positioned higher in the dorsoplantar plane in the configuration of FIG. 10a than in that of FIG. 10b.
- the fact that the keel 4 has the shape of a solid of revolution (in particular, cylindrical) allows the practitioner to make the implant 3 perform a rotational movement around the longitudinal axis 41, without deforming the medullary canal 11. of the diaphysis 1 of the metatarsal M in which the pin 4 is inserted.
- FIG. 12 represents a range G of implants comprising several implants 3 according to the invention, each of these implants 3 having a different lateral displacement distance DL, this lateral displacement distance DL (also called “step") being measured. between the longitudinal axis 41 and the lateral face 51 of the plate 5.
- the G range comprises in this embodiment four implants 3 whose lateral offset distance varies between 0 millimeters (so-called “neutral” implant, on the left in FIG. 12) and 6 millimeters (implant 3 on the right in FIG. 12).
- the particular structure of the implant 3 according to the invention allows the practitioner to choose and vary the position of the head 2 of the metatarsal M:
- This freedom of positioning the head 2 of the metatarsal M relative to the diaphysis 1 of the metatarsal M according to 3 degrees of freedom thus allows the practitioner to provide a "tailor-made" correction to each patient, adapted to the particular characteristics of their hallux. -valgus.
- FIGS. 13 to 15 represent a tool 10 suitable for preparing the fixation, on the metatarsal M, of an implant 3 according to the invention as described above.
- This tool 10, specially adapted to the manipulation of the implant 3, makes it possible to guide the practitioner during the fixation of the implant 3 on the metatarsal M and to make the operating technique used less invasive.
- the tool 10 aims to facilitate the following operations:
- This tool 10 comprises a frame 101, notably having two parallel slides 1011.
- the tool furthermore comprises a movable body 102 movable, as can be seen in FIG. 15, in translation along the slides 1011 along a translation axis 1020.
- the frame 101 comprises a translation wheel 1012 making it possible to drive in rotation a threaded rod 1013 cooperating with a threaded hole made in the movable body 102: by actuating this translation wheel 1012, it is thus possible to drive the body in translation. movable 102 along the translation axis 1020.
- the frame 101 also comprises two holes 1014 formed through them in a distal end 1015.
- These holes 1014 are adapted to receive a Kirschner wire also inserted into the bone of the shaft 1 of the metatarsal M, thus hooking the tool 10 to this same shaft 1 of the metatarsal M.
- the movable body 102 comprises an indexing pin 1021 and a securing rod 1022 making it possible to secure the tool 10 to the implant 3.
- the plate 5 of the implant 3 has in a complementary manner an indexing orifice 54 and a tapped hole 55, both provided through between the lateral face 51 and the medial face 53 .
- the indexing pin 1021 is adapted to be inserted into the indexing hole 54 and allows the tool 10 to be positioned relative to the implant 3.
- the tie-down rod 1022 has a threaded end 1023 adapted to cooperate with the threaded hole 55 and allows the tool 10 to be fixed in a removable manner on the implant 3.
- the tie-down rod 1022 also cooperates with a tie-down wheel 1024 enabling this tie-down rod 1022 to be manipulated from an upper face 103 of the tool 10, the threaded end 1023 of the tie-down rod 1022 being located opposite a lower face 1024 of the tool 10.
- the practitioner can fix the tool 10 on the implant 3 in a minimally invasive approach, without having physical access to the indexing hole 54 or to the tapped hole 55.
- the tapped hole 55 is identical to the tapped holes 52: this tapped hole 55 can thus be used, once the tool 10 has been detached from the implant 3, to insert a locked screw 9 in order to strengthen the fixation of the plate 5 on the head 2 of the metatarsal M.
- the movable body 102 has two guide holes 1025, positioned so that, when the tool 10 is fixed on the implant 3, these two guide holes are located opposite the holes 43 of the keel. 4.
- FIGS. 16 to 28 make it possible to detail the surgical method used to fix the implant 3 according to the invention on the metatarsal M, using the tool 10.
- Figure 16 shows the result of a transverse osteotomy identical to that detailed in Figure 1 above, at the end of which the head 2 of the metatarsal M has undergone a transverse translation (in the medial / lateral plane) with respect to the diaphysis 1 of the metatarsal M following the rectilinear cut D, for example made using a bone saw.
- the head 2 of the metatarsal M is thus in a position away from the longitudinal axis M1 of the diaphysis 1 of the metatarsal M.
- This head 2 of the metatarsal M is maintained in its new position by a Kirschner pin B, inserted into the medullary canal 11 of the diaphysis 1 of the metatarsal M and extending along the longitudinal axis Ml.
- the practitioner makes, by drilling, a tunnel T around the pin B, then prepares this tunnel T with a shaper 100 to receive the implant 3 according to the invention, as shown in the figure 17.
- This shaper 100 makes it possible, by being inserted into the tunnel T, to push back the cancellous bone forming the walls of this tunnel T, in order to adapt the shape of the latter to that of the implant 3.
- the implant 3 according to the invention is then "threaded" on the pin B and introduced into the tunnel T: the pin B is indeed introduced into the internal duct 7 of the implant 3 through the proximal end 42 of the keel. 4, and opens at the level of the distal end 61 of the intermediate portion 6: thanks to the presence of the internal duct 7, the insertion of the implant 3 into the medullary canal 11 of the diaphysis 1 of the metatarsal M is perfectly guided and very precise.
- the longitudinal axis 41 of the implant 3 and the longitudinal axis M1 of the metatarsal M are coincident.
- This surgical impactor 200 has a structure specially adapted to the implant 3 according to the invention.
- It in fact comprises a tie-down rod adapted to cooperate with the threaded hole 52 of the plate 5 furthest from the intermediate portion 6, which can be handled by means of a wheel 201, and has a casing 202 matching the shape of the plate 5: it is thus possible to index the surgical impactor to the implant 3 by making the respective complementary shapes of the plate 5 and the casing 202 coincide, then to secure this surgical impactor 200 to the implant 3 by screwing the rod lashing in one of the holes 52.
- the practitioner can perform the actual impaction step of the implant 3 in the medullary canal 11 of the diaphysis 1 of the metatarsal M.
- the practitioner makes two holes through the threaded holes 52 of the plate 5 using a drill 300 and a viewfinder 301, as shown in FIG. 19.
- the locking screws 9 are then screwed (see Figure 20) in these holes made, cooperating with the threaded holes 52, so as to fix the plate 5 on the cortex of the head 2 of the metatarsal M.
- the practitioner chooses the position of the head 2 of the metatarsal M in the dorsoplantar plane according to the location on this head 2 of the metatarsal M of the holes intended to receive the screws locked 9.
- Pin B is then removed from shaft 1 of metatarsal M.
- the practitioner can then use the tool 10 as illustrated in FIG. 21.
- the tool 10 is secured to the implant 3 by means of the indexing pin 1021 and the securing rod 1022 (not visible in this figure 21) of the mobile body 102: the pin d indexing 1021 is introduced into the indexing hole 54 located on the plate 5 of the implant 3 and the threaded end 1023 of the securing rod 1022 cooperates with the threaded hole 55 also located on the plate 5 of the implant 3.
- the practitioner can in particular use the securing wheel 1024, making it possible to screw the threaded end 1023 into the threaded hole 55.
- the tool 10 is then fixed on the head 2 of the metatarsal M via the plate 5.
- the practitioner can then move the tool 10 in rotation around the longitudinal axis 41: this rotational movement consequently drives the implant 3 and the head 2 of the metatarsal M in rotation around the same longitudinal axis 41.
- the practitioner can therefore choose (as illustrated by FIG. 11) the position of the head 2 of the metatarsal M in axial rotation around the longitudinal axis 41.
- the tool 10 is also fixed on the diaphysis 1 of the metatarsal M by a Kirschner pin B 'inserted into one of the orifices 1014 made at the proximal end 1015 of the frame 101, this pin B' also being inserted through the cortex of the diaphysis 1 of the metatarsal M.
- the movable body 102 is fixed to the head 2 of the metatarsal M by means of the lashing rod 1022, the plate 5 and the locking screws 9, while the frame is fixed to the diaphysis 1 of the metatarsal M via pin B '.
- the tool 10 is shaped so that, when the latter is fixed to the implant 3, the translation axis 1020 of the tool is parallel to the longitudinal axis 41 of the implant.
- any translational movement of the movable body 102 relative to the frame 101 along the translation axis 1020 results in a translation of the head 2 of the metatarsal M relative to the diaphysis 1 of the metatarsal M along the longitudinal axis 41.
- the practitioner can vary the intensity of the interfragmentary compression between the head 2 of the metatarsal M and the diaphyseal shaft of the metatarsal M.
- This manipulation of the translation wheel 1012 is illustrated in FIG. 22.
- the practitioner can use the guide holes 1025 of the mobile body 2 to introduce the stop screws 8 into the holes 43 of the keel, in order to block the implant 3 in rotation around the axis. longitudinal 41.
- the tool 10 is shaped so that, when the latter is fixed on the implant 3, the guide holes 1025 are located opposite the holes 43 of the keel 4: by drilling according to the guide directions 1026 indicated by the guide holes 1025, the practitioner is then certain to reach the holes 43.
- the practitioner can introduce in the guide holes
- the practitioner can insert drills into the sights 400 to make holes in the diaphysis 1 of the metatarsal M according to the directions guide 1026, then screw the stop screws 8 using a bit 401 in these same holes, as shown in figure 24.
- FIG. 25 represents the same step of making holes in the diaphysis 1 of the metatarsal M, by means of a drill 402, in a second embodiment of the invention, when the implant 3 does not have a threaded hole 62 made in the intermediate portion 6, but a second hole 434 made in the pin 4 instead.
- this second hole 434 extends in a direction 4341 which is not orthogonal to the longitudinal axis 41 (inclined by a measurement angle b with respect to the latter).
- this tool 10 has a guide hole 1027 positioned vis-à-vis the second hole 434 and extending in the direction 4341 when the tool 10 is fixed on the implant 3.
- the guide hole 1027 indicates a guide direction 1028 collinear with the direction 4341 and not parallel to the guide direction 1026 indicated by the other guide hole 1025: this modification of the shape of the tool 10, in order to make the guide direction 1028 of the guide hole 1027 coincide with the oblique direction 4341, therefore makes it possible to guide the practitioner, in a manner identical to the embodiment described by the preceding FIGS. 21 to 24, when the intermediate portion 6 does not have an oblique threaded hole 62.
- this lateral offset distance DL within such a range of implants can have an influence on the positioning of the tapped hole (s) of the keel 4 if at least one of them extends. in a direction not orthogonal to the longitudinal axis 41.
- FIG. 26 illustrates the fixing of the same tool 10 on the implant 3 and on a second implant 3 ', this implant 3' having a lateral offset distance DL '(measured between a lateral face 5 of a plate 5 'and a longitudinal axis 4 of the implant 3') greater than the lateral offset distance DL of the implant 3 (measured between the lateral face 51 of the plate 5 and the longitudinal axis 41 of the implant 3 ).
- the implant 3 has, as described by the preceding FIG. 25, a second hole 434 formed in the pin 4 and extending in the guiding direction 1028 of the guide hole 1027 of the tool 10 when this tool 10 is fixed on the implant 3.
- the implant 3 ′ has a second hole 434 ′ formed in a pin 4 ′ and extending in the same guiding direction 1028 of the tool 10 when this tool 10 is fixed on the implant 3 ′: so that the collinearity of this second hole 434 'with the guide hole 1027 is ensured while the lateral offset distance DL' is greater than the lateral offset distance DL, it is necessary to modify the position of this second hole 434 ' on the keel 4 'compared to that of the second hole 434 on the keel 4 of the implant 3.
- the pin 4 ' being closer to the frame 101 of the tool 10 than the pin 4
- the second hole 434' must be positioned closer to the plate 5 'than is the second hole 434 of the plate. 5.
- the implant 3 ' has a separation distance DE' (measured between a proximal end 56 'of the plate 5' and the second hole 434 ') less than a separation distance DE of the implant 3 ( measured between a proximal end 56 of the plate 5 and the second hole 434 ').
- the tool 10 can then be detached from the implant 3, by manipulating the securing wheel 1024.
- the practitioner can then insert an aiming device 500 into the orifice 62 of the intermediate portion of the implant 3, and introduce therein a drill 501 so as to make a hole through the lateral cortex of the shaft. 1 of the metatarsal M.
- a locking screw 9 ', cooperating with the tapped hole 62 can then be screwed into this same hole.
- this locked screw 9 'inserted in the tapped hole has a direction 63 oblique with respect to those of the stop screws 8 and of the locking screws 9 (orthogonal to the longitudinal axis 41) and makes it possible to further strengthen the interfragmental compression between head 2 of metatarsal M and shaft 1 of metatarsal M.
- the locked screw 9 ' also has the function of stabilizing the keel 4 in translation in the medio-lateral direction.
- the tapped hole 55 having been used to fix the tool 10 on the implant 3 being identical to the tapped holes 52 in which the locked screws 9 are inserted: it is then possible for the practitioner to drill through this threaded hole 55, then introduce a new locked screw 9 using a tip 600 (visible in figure 28) in order to strengthen the fixing of the plate 5 on the head 2 of the metatarsal M.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2201542.4A GB2600626B (en) | 2019-08-12 | 2020-08-07 | Intramedullary implant for transverse osteotomy |
US17/634,483 US20220296285A1 (en) | 2019-08-12 | 2020-08-07 | Intramedullary implant for transverse osteotomy |
AU2020327648A AU2020327648A1 (en) | 2019-08-12 | 2020-08-07 | Intramedullary implant for transverse osteotomy |
ES202290009A ES2903027A2 (es) | 2019-08-12 | 2020-08-07 | Implante intramedular para osteotomía transversal |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR19/09154 | 2019-08-12 | ||
FR1909154A FR3099875A1 (fr) | 2019-08-12 | 2019-08-12 | Implant intramédullaire pour ostéotomie transversale |
Publications (2)
Publication Number | Publication Date |
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WO2021028636A2 true WO2021028636A2 (fr) | 2021-02-18 |
WO2021028636A3 WO2021028636A3 (fr) | 2021-04-08 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/FR2020/051448 WO2021028636A2 (fr) | 2019-08-12 | 2020-08-07 | Implant intramédullaire pour ostéotomie transversale |
Country Status (6)
Country | Link |
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US (1) | US20220296285A1 (fr) |
AU (1) | AU2020327648A1 (fr) |
ES (1) | ES2903027A2 (fr) |
FR (1) | FR3099875A1 (fr) |
GB (1) | GB2600626B (fr) |
WO (1) | WO2021028636A2 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11931106B2 (en) | 2019-09-13 | 2024-03-19 | Treace Medical Concepts, Inc. | Patient-specific surgical methods and instrumentation |
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FR3004920A1 (fr) | 2013-04-29 | 2014-10-31 | Biotech Ortho | Dispositif d'osteotomie, en particulier pour la realisation du scarf extreme dans le traitement de l'hallux valgus severe. |
US20160354124A1 (en) | 2009-01-26 | 2016-12-08 | Life Spine, Inc. | Flexible and static interspinous/inter-laminar spinal spacers |
US20180070995A1 (en) | 2016-09-15 | 2018-03-15 | Extremity Development Company, Llc | Intramedullary implant with proximal plate and method for its use |
EP3476319A2 (fr) | 2017-10-27 | 2019-05-01 | Wright Medical Technology, Inc. | Implant ayant une partie intramédullaire et une partie extramédullaire décalée |
Family Cites Families (3)
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ES2554665T3 (es) * | 2011-01-26 | 2015-12-22 | Del Palma Orthopedics, LLC | Dispositivos de fusión para las extremidades inferiores |
US10226292B2 (en) * | 2015-06-08 | 2019-03-12 | Andrew Lundquist | Combined intramedullary-extramedullary bone stabilization and alignment system |
US10159480B2 (en) * | 2015-07-20 | 2018-12-25 | Robert TUTEN | Surgical jig assembly for use in the manipulation and fixation of bony structures |
-
2019
- 2019-08-12 FR FR1909154A patent/FR3099875A1/fr active Pending
-
2020
- 2020-08-07 ES ES202290009A patent/ES2903027A2/es active Pending
- 2020-08-07 GB GB2201542.4A patent/GB2600626B/en active Active
- 2020-08-07 WO PCT/FR2020/051448 patent/WO2021028636A2/fr active Application Filing
- 2020-08-07 US US17/634,483 patent/US20220296285A1/en active Pending
- 2020-08-07 AU AU2020327648A patent/AU2020327648A1/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US20160354124A1 (en) | 2009-01-26 | 2016-12-08 | Life Spine, Inc. | Flexible and static interspinous/inter-laminar spinal spacers |
FR3004920A1 (fr) | 2013-04-29 | 2014-10-31 | Biotech Ortho | Dispositif d'osteotomie, en particulier pour la realisation du scarf extreme dans le traitement de l'hallux valgus severe. |
US20180070995A1 (en) | 2016-09-15 | 2018-03-15 | Extremity Development Company, Llc | Intramedullary implant with proximal plate and method for its use |
EP3476319A2 (fr) | 2017-10-27 | 2019-05-01 | Wright Medical Technology, Inc. | Implant ayant une partie intramédullaire et une partie extramédullaire décalée |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US11931106B2 (en) | 2019-09-13 | 2024-03-19 | Treace Medical Concepts, Inc. | Patient-specific surgical methods and instrumentation |
Also Published As
Publication number | Publication date |
---|---|
US20220296285A1 (en) | 2022-09-22 |
FR3099875A1 (fr) | 2021-02-19 |
ES2903027A2 (es) | 2022-03-30 |
AU2020327648A1 (en) | 2022-03-03 |
GB2600626B (en) | 2024-03-27 |
WO2021028636A3 (fr) | 2021-04-08 |
GB2600626A (en) | 2022-05-04 |
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