WO2009130417A2 - Implant nucleique - Google Patents
Implant nucleique Download PDFInfo
- Publication number
- WO2009130417A2 WO2009130417A2 PCT/FR2009/000389 FR2009000389W WO2009130417A2 WO 2009130417 A2 WO2009130417 A2 WO 2009130417A2 FR 2009000389 W FR2009000389 W FR 2009000389W WO 2009130417 A2 WO2009130417 A2 WO 2009130417A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wire
- nucleic
- space
- implant according
- ring
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2/442—Intervertebral or spinal discs, e.g. resilient
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- A—HUMAN NECESSITIES
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- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2/4611—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of spinal prostheses
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- A—HUMAN NECESSITIES
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- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2/4405—Joints for the spine, e.g. vertebrae, spinal discs for apophyseal or facet joints, i.e. between adjacent spinous or transverse processes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
- A61F2002/3006—Properties of materials and coating materials
- A61F2002/30062—(bio)absorbable, biodegradable, bioerodable, (bio)resorbable, resorptive
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- A—HUMAN NECESSITIES
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
- A61F2002/3006—Properties of materials and coating materials
- A61F2002/3008—Properties of materials and coating materials radio-opaque, e.g. radio-opaque markers
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- A—HUMAN NECESSITIES
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30317—The prosthesis having different structural features at different locations within the same prosthesis
- A61F2002/30327—The prosthesis having different structural features at different locations within the same prosthesis differing in diameter
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30617—Visible markings for adjusting, locating or measuring
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30667—Features concerning an interaction with the environment or a particular use of the prosthesis
- A61F2002/30677—Means for introducing or releasing pharmaceutical products, e.g. antibiotics, into the body
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2/442—Intervertebral or spinal discs, e.g. resilient
- A61F2002/444—Intervertebral or spinal discs, e.g. resilient for replacing the nucleus pulposus
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2002/4495—Joints for the spine, e.g. vertebrae, spinal discs having a fabric structure, e.g. made from wires or fibres
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- A—HUMAN NECESSITIES
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- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
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- A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
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- A61F2210/00—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2210/0004—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof bioabsorbable
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- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
- A61F2250/0039—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in diameter
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- A—HUMAN NECESSITIES
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- A61F2250/0096—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers
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- A61F2250/0096—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers
- A61F2250/0098—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers radio-opaque, e.g. radio-opaque markers
Definitions
- the present invention relates to a threaded nucleic implant constituting between two vertebrae above and below a spinal segment a damping intervertebral shoring device and ensuring the mobility of the functional unit formed by said vertebrae.
- the technique of filling with a fine wire is widely used for the treatment of arterial aneurysms.
- the filling is intended to obtain the coagulation of the blood bag in order to avoid its rupture.
- This technique has been used in interventional neuroradiology for more than 20 years under the name of coils technique (platinum turns).
- This technique consists of introducing a percutaneous balloon transpedicular into a fractured vertebra and inflating it to obtain a reconstruction of the vertebra and especially an intra-vertebral space in which a cement will be injected after removal of the balloon.
- Patent application WO 2006/129027 discloses a filling element intended to fill a vertebral body cavity for the production of a nucleus prosthesis of an intervertebral disc.
- the filler element is preheated to a temperature higher than that of the human body to allow its introduction in the form of a flexible filament to form an entanglement filling the cavity.
- the present invention relates to a nucleic implant constituting between two vertebrae sus and underlying Va, Vb of a spinal segment Sr intervertebral shoring device damping and ensuring the mobility of the functional unit formed by said vertebrae of a spine.
- the nucleic implant constituting, between two vertebrae supra and underlying Va, Vb of a spinal segment Sr, an intervertebral shoring device damping and ensuring the mobility of the functional unit formed by said vertebrae of a vertebral column following the
- the present invention consists of at least one filling element comprising at least one continuous filament arranged inside a nucleic space Es obtained after nucleotomy of the intervertebral disc Di, following a ring-shaped profile whose stack of turns allows to delimit a central internal space.
- the nucleic implant according to the present invention consists of a filling element comprising on the one hand a first wire forming, within a nucleic space Es obtained after nucleotomy of the intervertebral disc Di, a first ring and a on the other hand inside the central inner space defined by the first ring a second wire arranged to make a ball.
- the nucleic implant according to the present invention consists of a filling element comprising on the one hand a first wire forming, within a nucleic space Es obtained after nucleotomy of the intervertebral disc Di, a first ring and a on the other hand inside the central inner space delimited by the first ring a second wire arranged to make another ring.
- the nucleic implant according to the present invention comprises a central inner space delimited by the crown obtained by the arrangement of the son or son which is filled with a product which may be a gel or a pasty product or a fiber-based product or an injectable viscoelastic material.
- the nucleic implant according to the present invention comprises a wire comprising active principles promoting the formation of fibroses inside the filling element.
- the nucleic implant according to the present invention comprises an opaque radio wire for controlling the filling and the ring-shaped arrangement of the wire within the Es space.
- the nucleic implant according to the present invention comprises a wire which is made from composite or braided and bioabsorbable materials.
- the nucleic implant according to the present invention comprises a wire arranged in a ring-shaped profile which has a winding axis which is substantially perpendicular to the trays of the vertebrae Va, Vb of the spinal segment Sr.
- the nucleic implant according to the present invention comprises a wire comprising a free end which is refined or tapered to avoid tissue injury.
- the nucleic implant according to the present invention comprises a thread retained at the vertebra Va, Vb by means of a shutter or any other means to prevent the migration of said thread.
- the nucleic implant according to the present invention comprises at least two rings of wire arranged next to each other in the same nucleotide space Es.
- the introduction device for the nucleic implant comprises a threaded cannula or a curved profile guide tube, a first or second flexible wire guide sheath which is inserted inside said threaded cannula or said guide tube.
- curved profile so that one end of said flexible duct opens inside the nucleic space Es, while the other end is connected to advancing means or instrument allowing the introduction of the wire within said nucleotide space Es.
- the introduction device for the nucleic implant comprises a threaded cannula provided at one of its ends with a threading ensuring its bone anchorage in the corresponding vertebra Vb, of an internal channel ending in an exit lateral section intended to reach the upper plate Ps of the underlying vertebra Vb or lower Pi of the vertebra V and a head comprising on its periphery a locating index allowing the surgeon to visualize the position of the lateral outlet of the inner channel inside the overlying or underlying vertebra Vb and an extension providing the connection of said cannula.
- Figure 1 is an exploded perspective view illustrating the nucleic implant according to the present invention, the filling element is constituted by a wire arranged in a ring.
- Figure 2 is a sectional view illustrating the nucleic implant according to the present invention, the filling element consists of two son arranged in a ring.
- Figures 3 to 17 are views showing an exemplary embodiment of the various steps for the introduction of the nucleic implant by a transpedicular approach at the level of the vertebra overlying Va of a spinal segment Sr according to the present invention.
- FIG. 18 is a view showing the introduction of a product made in the form of a gel or a pasty product or a fiber-based product or an injectable viscoelastic material into the interior of the central internal space formed by the crown of the first thread of the nucleic implant by first Transedicular at the level of the overlying vertebra Va according to the present invention.
- Figures 19 to 33 are views showing another embodiment of the various steps for the introduction of the first transpedicular nucleic implant at the level of the underlying vertebra Vb of a spinal segment Sr according to the present invention.
- Figures 34 to 36 are views illustrating the introduction of a second wire within the central inner space formed by the first lead corona of the first transdicular nucleic implant according to the present invention.
- FIGS. 1, 2, 18 and 34 to 36 illustrate different embodiments of arrangement and constitution of a nucleic implant 1 according to the present invention.
- the nucleic implant 1 consists of at least one filling element 2 comprising at least one continuous wire 50 which is arranged in the form of a ring and whose stack of turns 55 makes it possible to define a central internal space 52, when said turns are wound inside a nuclei space ES previously arranged in the intervertebral disc Di of two vertebrae supra and underlying Va, Vb of a spinal segment Sr.
- the nucleic implant 1 consists of a wire 50 whose almost contiguous winding crown-shaped turns 55 delimits a central internal space 52 and a number of interstices 30 between each turn.
- the crown of turns 55 is formed by several contiguous layers of wire 50 whose winding axis is substantially perpendicular to the trays of the vertebrae Va, Vb of the spinal segment.
- a second wire 51 arranged either in a second ring, or in a ball, or following the two and defining other interstices 30 allowing to make the filling element 2 ( Figures 1, 2, 36).
- the son or son 50, 51 are provided biocompatible, small diameter or different diameters depending on the constitution of the nucleic implant 1.
- the son or son 50, 51 has an external diameter which is, for example, between 0.4 and 0.8 millimeters.
- the yarn (s) 50, 51 may be inert or contain active principles intended to promote the development of fibrotic tissue within the Es space previously arranged in the intervertebral disc Di of two vertebrae above and below , Vb of a spinal segment Sr
- the son or son 50, 51 are made from woven or non-bioabsorbable composite materials containing or not active ingredients intended to promote the formation of a fibrosis thus achieving a "neonucleus".
- the son or son 50, 51 are radio-opaque to control their introduction into the nucleotide space Es intraoperatively and monitoring of the nucleic implant 1 postoperatively.
- the yarn (s) 50, 51 comprise a free end, that is to say the one penetrating inside the Es space, which is refined or tapered and curved to prevent tissue injury due to its low resistance to contact in particular when introduced into the nucleic space Es.
- the nucleic implant 1 comprises in its ring-shaped arrangement a large number of interstices 30, of different sizes, which are obtained by stacking the turns 55 and promoting the formation of fibrosis inside the nucleic space Es.
- the nucleic implant 1 may comprise, inside the central internal space 52 made from the wire 50 or the arrangement of the wires 50, 51, a product 53 which may be a gel or a pasty product or a fiber-based product or injectable viscoelastic material in viscous or liquid form to form a pseudo-nucleus ( Figures 18, 35).
- the filling element 2 forms a "neo-nucleus" type nucleic implant 1 having good mechanical, cohesion and damping characteristics when it consists for example of a first wire ring 50 forming a " pseudo-annulus "associated with either a second ring or ball of yarn 51, or a product 53 which can be gel or a pasty product or a fiber product or an injectable viscoelastic material forming a" pseudo-nucleus ".
- the nucleic implant 1 forms a substantial mass filling the disc space obtained after nucleotomy.
- the wire or wires 50, 51 have a sufficient rigidity to be able to form a ring constituted by the stack of quasi-contiguous turns 55 which are folded, by the effect of buckling, inside the nucleic space Es.
- the nucleic implant 1 according to the present invention thus formed forms a substantial mass filling the disc space Es obtained after nucleotomy.
- the nucleic implant 1 may comprise at least two rings of wire 50 arranged next to each other in the same nucleotide space Es.
- two transpedicular approaches are made at each pedicle of the same vertebra.
- FIGS. 3 to 12 and 19 to 29 show two supra and underlying vertebrae Va, Vb of a spinal segment Sr of a vertebral column whose intervertebral disc Di will undergo a nucleotomy by trans-pedicular approach.
- the intervertebral disc Di has a structure internally referred to as "nucleus pulposus” (NP) which is surrounded by a fibrous ring called “annulus fibrosus” (AF).
- NP nucleus pulposus
- AF annulus fibrosus
- NP nucleus pulposus
- the vast majority of the nucleus pulposus (NP) biochemical composition consists of a hydrogel in which the dominant molecules consist of glycosaminoglycans, in which specific cells are suspended from the nucleus pulposus (NP).
- the biological environment in situ is rather acidic and anaerobic, which is unfavorable for cell growth.
- Glycosaminoglycans are biological polymers consisting of long glycosidic chains (the constituent monomer is a member of the family of sugars), comprising animated or peptide derivatives, hence their other name of proteoglycan. These polymers are in general very hydrophilic.
- the glycans constitute the matrix in which the cells are maintained.
- the matrix is in very close contact with the osteochondral zone of the lower and upper vertebral plateaus (cranial and caudal) of the above and underlying vertebrae Va, Vb. This zone is the only one allowing the rare nutritive exchanges with the "nucleus pulposus” (NP).
- NP neurotrophic pulposus
- nucleic implant 1 to a wire 50 by a transpedicular approach at the level of the supra-vertebra Va of a spinal segment Sr (FIGS. 3 to 17)
- the pedicle aim, the nucleotomy of the intervertebral disc Di and the introduction of the nucleic implant 1 are conducted in the following manner by the surgeon:
- the surgeon positions and introduces a radiographically guided guide pin into the pedicle of the overlying vertebra Va of the spinal segment Sr ( Figure 3).
- the introduction of the guide pin 10 is made from a point of entry provided at one of the two pedicles of the overlying vertebra Va and targeting the point of the vertebral body intersecting the vertical passing through the center of the nucleus (NP).
- the surgeon positions on the candle 11 a guide tube or straight cannula 12 which is provided at its end with a threaded portion 12b allowing a solid anchorage in the body of the overlying vertebra Va ( Figures 4 and 5).
- the guide pin 10 defines the path of the right cannula 12 which is introduced by screwing beyond the posterior wall of the vertebral body in order to materialize a transpedicular bony canal guide Ca and secure against any potential aggression neurological elements.
- the axis of the right cannula 12 passes vertically from the center of the nucleus (NP) lying below.
- the axis of the right canula 12 in the sagittal plane, the position of its end in the vertebra and the dimensions of the vertebra Va itself determine the profile of a curved guide tube or a curved cannula 13a adapted (e) in case.
- the surgeon removes the pin 10 and the candle 11 and introduced into the guide tube or straight cannula 12 a second curved guide tube or curved cannula 13a for providing a transpedicular guide channel Ca Ca to the level of the lower plate Pi of the overlying vertebra Va ( Figures 6, 7).
- the curved cannula 13a is made of super-elastic material and pushed progressively through the right cannula 12 to exit the latter by bending until it reaches the lower plate Pi of the vertebra Va.
- the guidance obtained by the right cannula 12 and the choice of the profile of the curved cannula 13a make it possible to easily reach the point on the plateau Pi chosen during the preoperative planning.
- the surgeon radiologically introduces into the curved guide tube or curved cannula 13a a flexible cutting device or a flexible cutting rod 30 having, for example at its end, cutting tools or small blades.
- retractable cutting members 31, 32 which are rotated to reduce the tissues of the nucleic space Es to evacuable debris by the transpedicular guide channel Ca Ca (FIGS. 9 to 12).
- the surgeon proceeds under radiological control to the cleaning of the nucleic space Es by means of a flexible cannula 42 introduced through the airtight connector 41 into the curved cannula 13a to the inside of said nucleotide space Es and connected to a system or pump 40 for injecting and aspirating physiological fluid.
- the aspiration of the liquid by the system or pump 40 allows the entrainment of the debris out of the nucleic space Es (FIG. 13).
- nucleic space Es As soon as the nucleic space Es is made, emptied and cleaned the surgeon can proceed to the introduction of the nucleic implant 1 consisting of the filling element 2 formed of the wire 50 within said space.
- the surgeon introduces through the connector 41 and into the curved guide tube or curved cannula 13a a wire guide flexible sheath 18 to reach the lower plate Pi of the overlying vertebra Va to open inside of the nucleic space Es.
- the flexible sheath 18 has an internal bore 18a which substantially corresponds to the diameter of the wire 50 to be introduced into the nucleic space Es (FIGS. 14, 15).
- the surgeon connects the flexible sheath 18 by means of an introduction system of the "wire advance" type in the welding stations, comprising for example a gun 20 provided with an internal or external charger 21 in which a sufficient length is wound up wire 50 (FIG. 14).
- the surgeon acts on the drive means of the gun 20 causing a thrust of the wire 50 inside the internal bore 18a of the flexible sheath 18 and this to the inside of the nucleotide space Es formed in the intervertebral disk Di.
- a certain length of wire 50 is introduced into the nucleic space Es with a controlled speed.
- the continuous introduction of the wire 50 and its crown-shaped placement in the nucleic space Es are monitored under radiological control because the wire 50 is radio-opaque. ( Figures 15, 16).
- the wire 50 thus pushed, wraps and lines the inner walls of the "annulus fibrosus" (AF) while curling.
- the wire 50 having a certain rigidity bends by buckling effect and is placed in a ring in the nucleic space 1 by forming rows of contiguous turns 55 over the entire height of said space.
- the wire 50 by lovant forms inside the nucleic space Es a ring of substantially vertical axis relative to the trays of the vertebrae Va, Vb.
- the ring of turns 55 delimits an internal central space 52 which can be filled by complementary products introduced in the process of operation such as another wire 51 or a product 53 which can be gel, a pasty product, a fiber product, an injectable viscoelastic material or by the formation of postoperative fibrosis favored by vascularization due to the transpedicular approach.
- the surgeon removes the flexible sheath 18, the introduction system 20, the curved guide tube or curved cannula 13a and the guide tube or right cannula 12 of the bone channel Ca.
- the surgeon fixes the end of the wire 50 constituting the crown to the vertebra Va inside the bone channel Ca by means of fixing means or a shutter 43 which also allows to close off said channel. bony.
- the wire 50 thus secures the nucleic implant 1 to the vertebra Va to prevent potential migration problems (FIG. 17).
- Introduction of the nucleic implant 1 to a wire 50 by a transpedicular approach at the level of the vertebra under the Vb of a spinal segment Sr (FIGS. 19 to 33)
- the pedicle aim, the nucleotomy of the intervertebral disc Di and the introduction of the nucleic implant 1 are conducted in the following manner by the surgeon: • The surgeon positions and introduces a guide pin 10 under radiological control into the pedicle of the underlying vertebra Vb of the spinal segment Sr ( Figure 19). • The surgeon puts a candle 11 on the guide pin 10 to reach the pedicle ( Figure 20).
- the surgeon removes the cannula drill 13 and pin 10 to introduce into the bone channel Ca a cannula 15 provided at one of its ends with a thread 15g ensuring its bone anchorage.
- This threaded cannula 15 has an inner channel 15a terminating in a lateral outlet 15b for reaching the upper plateau Ps of the underlying vertebra Vb.
- the screwing of the cannula 15 is performed under radiological control to identify the channel 15a to be placed at the center of the disk Di.
- the cannula 15 has an end 15c which protrudes at the level of the skin so that the entrance of the channel 15a is easily accessible.
- the end of the cannula 15 consists of a head 15c whose external profile allows the rotational drive of said cannula.
- the head 15c is secured on its periphery with a locating index 15d allowing the surgeon to visualize the position of the lateral outlet 15b of the inner channel 15a inside the underlying vertebra Vb.
- the head 15c has a threaded extension 15f providing the connection of the cannula 15 with a wire guide sheath 18 ( Figure 25).
- the surgeon positions the lateral orifice 15b of the threaded cannula 15 towards the upper plate Ps of the underlying vertebra Vb in order to reach the lower surface of the intervertebral disc Di (FIG. 26).
- the surgeon proceeds to the nucleotomy of the intervertebral disc Di.
- the percutaneous nucleotomy consists in eliminating, in a controlled manner, the maximum of "nucleus pulposus" (NP) from the intervertebral disc Di through the threaded cannula 15.
- the surgeon inserts by means of the threaded cannula 15 and into the disc intervertebral disc Di, an extraction device, not shown, of small diameter comprising, for example, a laser fiber, a optical fiber connected to a camera, an irrigation hole and a suction hole.
- the extraction device includes a mechanism for the surgeon to orient the laser fiber to effect the removal of the "nucleus pulposus" (NP) accurately and under control of the camera.
- the laser beam vaporizes the tissue to be removed and the irrigation system integrated in the extraction device maintains a controlled temperature to avoid affecting the tissues surrounding the work area and to evacuate the products of the nucleotomy by the suction hole of the extraction device.
- the nucleotomy is performed, according to the habits of each surgeon, manually, laser or by coblation.
- the surgeon removes the nucleus pulposus (NP) to release a nucleic space Es ( Figure 29).
- nucleic space Es As soon as the nucleic space Es is made, emptied and cleaned, the surgeon can proceed to the introduction of the nucleic implant 1 consisting of the filling element 2 formed of the wire 50 within said space.
- the surgeon introduces into the threaded cannula 15 a wire guide flexible sheath 18 until reaching the upper plateau Ps of the underlying vertebra Vb to open inside the nuclei space Es.
- the flexible sheath 18 has an internal bore 18a which substantially corresponds to the diameter of the filling element 2 which may consist of a wire 50 to be introduced into the nucleotide space Es.
- the flexible sheath 18 is fixed to the threaded cannula 15 as soon as its free end penetrates slightly into the nucleic space Es formed in the intervertebral disk Di via a first connector 18b.
- the flexible sheath 18 serves to facilitate the guide of the wire 50 into the nucleotide space Es released by the nucleotomy ( Figures 30, 31).
- the surgeon connects the flexible sheath 18 by means of an introduction system of the "wire advance" type in the welding stations, comprising for example a gun 20 provided with an internal or external charger 21 in which a sufficient length is wound up of wire 50 (Figure 32).
- the surgeon removes the flexible sheath 18, the introduction system 20, the threaded cannula 15 and the guide tube or right canula 12 of the bone channel Ca. • The surgeon fixes the end of the wire 50 constituting the crown to the vertebra Vb within the bone channel Ca via fastening means or a shutter 43 which also closes said bone channel. The thread 50 thus solidarises the nucleic implant 1 with the vertebra Vb to prevent potential problems of migration.
- the filling element 2 is formed, for example, of a wire ring 50 delimiting a central internal space 52 the latter can be filled by another wire 51 arranged either in a ring or in a ball.
- the filling element 2 is formed, for example, of a wire crown 50 partially filling the nucleic space Es and making it possible to produce a pseudo annulus, whose function will be to protect and reinforce the "annulus fibrosus" (AF ) and avoid the risk of formation or subsequent degradation of the "annulus fibrosus” (AF).
- the surgeon fixes the end of the son 50, 51 inside the bone channel Ca via fastening means or a shutter 43 which also closes said bone channel.
- the son 50, 51 thus secure the nucleic implant 1 to the vertebra to prevent potential migration problems.
- the second wire 51 is intended to fill the remaining nucleotide space Es, that is to say, the central inner space 52 delimited by the first wire ring 50 forming the pseudo annulus.
- the second wire 51 is introduced under pressure with the gun 20 to obtain a sufficient fill rate necessary for good compression resistance.
- the second wire 51 is arranged either following a second ring or following a ball, or following the two forming a pseudo nucleus. When the second ring or the ball of wire 51 forming the pseudo-nucleus is considered as satisfactory ie very dense the second wire 51 fixed to the shutter 43.
- the filling element 2 is formed, for example, of a wire ring 50 delimiting a central internal space 52 the latter can be filled either by another wire 51 or by a product 53 which can be gel or a pasty product or a fiber product.
- the filling element 2 is formed, for example, of a wire ring 50 and partially filling the nucleic space Es makes it possible to produce a pseudo annulus, whose function will be to protect and reinforce the "annulus fibrosus" (AF ) and avoid the risk of formation or subsequent degradation of the "annulus fibrosus” (AF).
- the filling element 2 can also be made from a single wire 50 in the form of a ring whose central internal space 52 and the interstices 30 are filled with a product 53 which can be gel or a pasty product or a fiber-based product or injectable viscoelastic material forming a "pseudo-nucleus" ( Figure 18).
- the nucleic implant 1 thus obtained forms a neo-nucleus with good mechanical characteristics, cohesion and damping constituted by the ring of wire 50 forming a pseudo-annulus and a product 53 which can be gel or a pasty product or a fiber-based product or an injectable viscoelastic material forming a "pseudo-nucleus".
- the filling element 2 may consist of a first wire crown 50 delimiting an internal central space 52 and a number of interstices 30 between the turns 55 of the winding, of a second wire 51 arranged in a second direction. crown, and a product 53 which may be a gel or a pasty product or a fiber product or an injectable viscoelastic material forming a "pseudo-nucleus" ( Figure 35).
- the interstices 30 and the internal central space 52 of the nucleic implant 1 are filled with a product 53 which may be a gel or a pasty product or a fiber product or an injectable viscoelastic material.
- nucleic implant 1 can be associated with a facet prosthesis placed at the same time or in addition when said facet prosthesis is already installed on the above and underlying vertebrae Va, Vb of the spinal segment Sr.
- NP nucleus pulposus
- the percutaneous transpedicular approach is performed either by the overlying vertebra Va or by the underlying vertebra Vb of the spinal segment Sr to reach the intervertebral disc Di by drilling the pedicle of said vertebra V or underlying Vb underlying.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2009239817A AU2009239817B2 (en) | 2008-04-04 | 2009-04-02 | Nucleus pulposus implant |
BRPI0910932A BRPI0910932A2 (pt) | 2008-04-04 | 2009-04-02 | implante de núcleo, e, dispositivo de introdução para implante de núcleo. |
EP09735135.7A EP2288313B1 (fr) | 2008-04-04 | 2009-04-02 | Implant nucleique |
JP2011502416A JP5694915B2 (ja) | 2008-04-04 | 2009-04-02 | 髄核インプラント |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0801860A FR2929502B1 (fr) | 2008-04-04 | 2008-04-04 | Implant nucleique. |
FR0801860 | 2008-04-04 |
Publications (2)
Publication Number | Publication Date |
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WO2009130417A2 true WO2009130417A2 (fr) | 2009-10-29 |
WO2009130417A3 WO2009130417A3 (fr) | 2010-05-14 |
Family
ID=40019367
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2009/000389 WO2009130417A2 (fr) | 2008-04-04 | 2009-04-02 | Implant nucleique |
Country Status (7)
Country | Link |
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US (2) | US8740981B2 (fr) |
EP (1) | EP2288313B1 (fr) |
JP (1) | JP5694915B2 (fr) |
AU (1) | AU2009239817B2 (fr) |
BR (1) | BRPI0910932A2 (fr) |
FR (1) | FR2929502B1 (fr) |
WO (1) | WO2009130417A2 (fr) |
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- 2009-04-02 JP JP2011502416A patent/JP5694915B2/ja active Active
- 2009-04-02 AU AU2009239817A patent/AU2009239817B2/en not_active Ceased
- 2009-04-02 WO PCT/FR2009/000389 patent/WO2009130417A2/fr active Application Filing
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2012
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WO2008005141A2 (fr) | 2006-06-29 | 2008-01-10 | Depuy Spine, Inc. | Insert pour implant de noyau |
Cited By (4)
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WO2013057409A1 (fr) | 2011-10-17 | 2013-04-25 | Clariance | Perfectionnements aux implants nucléiques en silicone |
US9814592B2 (en) | 2011-10-20 | 2017-11-14 | Clariance | Silicone nucleus implants |
CN110974420A (zh) * | 2019-11-29 | 2020-04-10 | 上海交通大学 | 一种用于开颅手术的机械臂末端稳定装置 |
CN110974420B (zh) * | 2019-11-29 | 2020-11-06 | 上海交通大学 | 一种用于开颅手术的机械臂末端稳定装置 |
Also Published As
Publication number | Publication date |
---|---|
US8740981B2 (en) | 2014-06-03 |
JP2011516138A (ja) | 2011-05-26 |
WO2009130417A3 (fr) | 2010-05-14 |
BRPI0910932A2 (pt) | 2019-02-26 |
FR2929502A1 (fr) | 2009-10-09 |
AU2009239817A1 (en) | 2009-10-29 |
US20090254186A1 (en) | 2009-10-08 |
US20120277862A1 (en) | 2012-11-01 |
FR2929502B1 (fr) | 2011-04-08 |
US8652209B2 (en) | 2014-02-18 |
EP2288313A2 (fr) | 2011-03-02 |
JP5694915B2 (ja) | 2015-04-01 |
EP2288313B1 (fr) | 2014-06-11 |
AU2009239817B2 (en) | 2013-07-18 |
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