WO2019103587A1 - Osseointegrated orthopaedic implant for femoral amputations with short stumps - Google Patents
Osseointegrated orthopaedic implant for femoral amputations with short stumps Download PDFInfo
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- WO2019103587A1 WO2019103587A1 PCT/MA2018/000021 MA2018000021W WO2019103587A1 WO 2019103587 A1 WO2019103587 A1 WO 2019103587A1 MA 2018000021 W MA2018000021 W MA 2018000021W WO 2019103587 A1 WO2019103587 A1 WO 2019103587A1
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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
- A61F2/50—Prostheses not implantable in the body
- A61F2/78—Means for protecting prostheses or for attaching them to the body, e.g. bandages, harnesses, straps, or stockings for the limb stump
-
- 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
- A61F2/28—Bones
- A61F2/2814—Bone stump caps
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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
- A61F2/50—Prostheses not implantable in the body
- A61F2/60—Artificial legs or feet or parts thereof
-
- 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
- A61F2/50—Prostheses not implantable in the body
- A61F2002/5081—Additional features
- A61F2002/5083—Additional features modular
-
- 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
- A61F2/50—Prostheses not implantable in the body
- A61F2/60—Artificial legs or feet or parts thereof
- A61F2002/608—Upper legs
-
- 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
- A61F2/50—Prostheses not implantable in the body
- A61F2/78—Means for protecting prostheses or for attaching them to the body, e.g. bandages, harnesses, straps, or stockings for the limb stump
- A61F2002/7887—Means for protecting prostheses or for attaching them to the body, e.g. bandages, harnesses, straps, or stockings for the limb stump for connecting limb exoprostheses to the stump bone
Definitions
- This invention is an osteo-integrated percutaneous (biomechanical) implant used for the rehabilitation of short stump trans-femoral amputees.
- Traumatic amputations or resulting from cancer surgery are often close to the overlying joint, with problems of healing and short stump. It is difficult then to obtain optimal rehabilitation in these patients by a prosthesis traditional nest. The latter does not meet the requirements of comfort, safety, freedom of movement and cosmetic requirements, which can affect the quality of life of the amputee.
- osseointegration offers an optimal solution to improve the quality of life of amputees.
- This technique is widely used in dental surgery, facial reconstructions as well as hearing aids.
- the prosthesis anchored directly into the bone according to the principle of osseointegration is attached to the residual limb without the use of any hold which eliminates all problems related to heat, perspiration, and discomfort.
- Osteointegration a concept developed by Per IngvarBranemark in 1965, is defined by the direct contact between the bone tissue and a biomaterial without interposition of fibrosis. Titanium is an excellent biomaterial, its integration is done by a plastic deformation of the bone / implant interface. The metal is incorporated into the bone permanently.
- the clinical manifestation of osseointegration results in the lack of mobility of the implant; Obtaining and maintaining implant stability are therefore two essential conditions for the long-term functional success of osteo-anchored prostheses. However, this stability also depends on other factors such as the implant, the host and the clinician. After primary healing, secondary stability is determined by the biological response to surgical trauma, healing conditions, and implant material.
- the first type of osseointegrated implant is a cannulated screw fixation implant, which was developed by adapting the technology initially applied to osteointegrated dental implants: OPRA System "OsseointegratedProtheses for the Rehabilitation of Amputees".
- the second type of recently improved osseointegrated implant is a press-fit system implant, which performs skeletal integration through bone growth, osteointegration implants based on this technique, consisting of ILP "IntegralLeg Prothesis".
- the ILP is manufactured from a cobalt-molybdenum chromium alloy, with a surface coating with a spongy forest structure of diameter 300-1500 ⁇ m (see link: https://link.springer.com/ Article / l0.l007 / sl0439-0l7-1976-4) c)
- the third type of osteo-integrated implant is the OPL "OsseointegratedProstheticLimb" which is an improved version of the ILP developed in 2013.
- the OPL is made from a titanium alloy with a plasma-sprayed raw titanium coating to facilitate bone penetration and anchoring of the implants, as well as a ferrule to provide axial initial rotational stability.
- the fourth type of osseointegrated implant is the latest advancement in implant technology (24). February 2017), it is an implant with a surface microporous structure to promote the fixation of the implant by bone growth, as well as transverse screws, attached directly to the implant through the femur to provide initial transverse stability. (DOI l0.l007 / s00l l3-017-0329-y)
- the present invention comprises a triple technique for obtaining and maintaining the initial mechanical stability.
- This invention comprises a system of coaxial implants, having three techniques (screwing, microporous structure, fixation walrus) to obtain and maintain the mechanical stability in order to prepare good primary healing conditions, in order to achieve the osteo process -integration.
- the present implant system consists of a hollow main cylinder, housed in the bone.
- This main cylinder has a screwed portion, a portion with a microporous structure to promote fixation of the implant by bone growth, as well as windows allowing the exit of the attachment hooks which are attached to the secondary cylinder.
- the present system comprises a secondary cylinder, divided into three longitudinal fragments each having fixing mists.
- the present system also comprises an initial spacing screw, as well as a definitive spacer holding screw, this spacer holding screw on one side, also having on the other transcutaneous side a mechanical system (a stop) on which we attach the prosthesis. (See Figure 1)
Abstract
A device for obtaining optimum rehabilitation in transfemoral amputation patients with short stumps. The invention concerns a system of coaxial orthopaedic osseointegrated implants, with a technical innovation to improve the primary mechanical stability, in order to succeed in the process of osseointegration. The proposed system of coaxial orthopaedic implants, comprises: - a main hollow cylinder (see figure 2) comprising, on the outer cylindrical surface: a screwed portion, a portion impacted in the bone and a portion comprising windows for the exit of attachment shanks. This cylinder also comprises internally on the bottom face, guidance and orientation pins for the secondary cylinder (see figure 3). - An orientation cover (see figure 4) comprising guidance pins for the secondary cylinder. - A secondary cylinder divided into three fragments comprising attachment shanks, these spurs being attached in the bone by a radial translation, due to a uniform separation along the secondary cylinder, by spacing screws (see figure 5) initially, and a spacing maintenance screw (see figure 6) in the final phase. A final transcutaneous implant, "the abutment" (see figure 6), on which a mechanical system of washers is attached, in order to guarantee a stable and reliable attachment of the orthopaedic prosthesis on the abutment.
Description
IMPLANT ORTHOPEDIQUE OSTEO-INTEGRE DESTINE AUX AMPUTES FEMORAUX A MOIGNONS COURTS OSTEO-INTEGRATED ORTHOPEDIC IMPLANT FOR FEMALE AMPUTES WITH SHORT LEVERS
I. Description de l’invention 1- Domaine d’application I. Description of the invention 1- Field of application
Cette invention est un implant (biomécanique) percutané ostéo-intégré, utilisé pour la réhabilitation des amputés trans-fémoraux à moignons courts. This invention is an osteo-integrated percutaneous (biomechanical) implant used for the rehabilitation of short stump trans-femoral amputees.
2- Etat de la technique antérieure 2- State of the prior art
Les amputations traumatiques ou résultant de chirurgie carcinologique sont souvent proches de l’articulation sus jacente, avec des problèmes de cicatrisation et de moignon court. Il est difficile alors d’obtenir une réhabilitation optimale chez ces patients par une prothèse emboiture traditionnelle. Cette dernière ne répond pas aux exigences de confort, de sécurité, de liberté de mouvement ainsi qu’aux exigences cosmétiques, ce qui peut nuire à la qualité de vie de la personne amputé. Traumatic amputations or resulting from cancer surgery are often close to the overlying joint, with problems of healing and short stump. It is difficult then to obtain optimal rehabilitation in these patients by a prosthesis traditional nest. The latter does not meet the requirements of comfort, safety, freedom of movement and cosmetic requirements, which can affect the quality of life of the amputee.
Cependant l’ostéo-intégration présente une solution optimale pour améliorer la qualité de vie des personnes amputées. Cette technique est largement utilisée dans la chirurgie dentaire, les reconstructions faciales ainsi que les aides auditives. Aujourd'hui, elle peut être une alternative de la prothèse conventionnelle suspendue pour les patients souffrant d'amputations de membres supérieurs / inférieurs. However, osseointegration offers an optimal solution to improve the quality of life of amputees. This technique is widely used in dental surgery, facial reconstructions as well as hearing aids. Today, it may be an alternative to conventional suspended prosthesis for patients with upper / lower limb amputations.
La prothèse ancrée directement dans l’os selon le principe de l’ostéo-intégration est attachée au membre résiduel sans l’utilisation d’aucune prise ce qui élimine tous les problèmes liés à la chaleur, la transpiration, et l'inconfort. The prosthesis anchored directly into the bone according to the principle of osseointegration is attached to the residual limb without the use of any hold which eliminates all problems related to heat, perspiration, and discomfort.
De nos jours, l’ostéo-intégration est largement utilisée en chirurgie dentaire, maxillofaciale, et en chirurgie carcinologique, où les défects posent de gros problèmes fonctionnels et esthétiques.
3- Description du problème technique Nowadays, osseointegration is widely used in dental surgery, maxillofacial, and in oncological surgery, where the defects pose major functional and aesthetic problems. 3- Description of the technical problem
L’ostéo-intégration, concept développé par Per IngvarBranemark dès 1965, se définit par le contact direct entre le tissu osseux et un biomatériel sans interposition de fibrose. Le titane est un excellent biomatériel, son intégration se fait par une déformation plastique de l’interface os/implant. Le métal s’incorpore à l’os de façon permanente. Osteointegration, a concept developed by Per IngvarBranemark in 1965, is defined by the direct contact between the bone tissue and a biomaterial without interposition of fibrosis. Titanium is an excellent biomaterial, its integration is done by a plastic deformation of the bone / implant interface. The metal is incorporated into the bone permanently.
La manifestation clinique de l’ostéo-intégration se traduit par l’absence de mobilité de l’implant ; l’obtention et le maintien de la stabilité implantaire sont donc deux conditions essentielles au succès fonctionnel à long terme des prothèses ostéo-ancrées. Cependant, cette stabilité dépend aussi d’autres facteurs tels l’implant, l’hôte et le clinicien. Après la cicatrisation primaire, la stabilité secondaire est déterminée par la réponse biologique au traumatisme chirurgical, les conditions de cicatrisation ainsi que par le matériau dont est fait l’implant. a) Le premier type d’implant ostéo-intégré est un implant à fixation à vis canulée, qui a été développé en adaptant la technologie initialement appliquée aux implants dentaires ostéo- intégrés : Système OPRA« OsseointegratedProtheses for the Réhabilitation of Amputées ». Ce système d'implant comprend trois composants principaux : un implant en titane (fixture), un implant cylindrique pénétrant dans la peau (Abutment) et une vis en titane (Abutmentscrew) qui maintient le système ensemble.(Voir le lien : https ://link. springer. com/ article/ 10.1007/s 10439-017-1976-4) The clinical manifestation of osseointegration results in the lack of mobility of the implant; Obtaining and maintaining implant stability are therefore two essential conditions for the long-term functional success of osteo-anchored prostheses. However, this stability also depends on other factors such as the implant, the host and the clinician. After primary healing, secondary stability is determined by the biological response to surgical trauma, healing conditions, and implant material. a) The first type of osseointegrated implant is a cannulated screw fixation implant, which was developed by adapting the technology initially applied to osteointegrated dental implants: OPRA System "OsseointegratedProtheses for the Rehabilitation of Amputees". This implant system consists of three main components: a titanium implant (fixture), a cylindrical implant penetrating the skin (Abutment) and a titanium screw (Abutmentscrew) that holds the system together. (See link: https: / / link.r springer .com / article / 10.1007 / s 10439-017-1976-4)
Cependant, la Longue durée de mise en place de cet implant (vissage), augmente la température, ce qui échauffeou brûle carrémentles cellules osseuses, ceci dégrade ou bien empêche complètement le processus d’ostéo-intégration. b) Le deuxième type d’implant ostéo-intégré récemment améliorée est un implant de système « Press-fit », qui réalise l'intégration squelettique grâce à la croissance osseuse, les implants d'osteo-intégration basée sur cette technique, consistant en ILP « IntegralLeg Prothesis ». However, the long duration of implementation of this implant (screwing), increases the temperature, which heats or burns the bone cells, this degrades or completely prevents the process of osseointegration. b) The second type of recently improved osseointegrated implant is a press-fit system implant, which performs skeletal integration through bone growth, osteointegration implants based on this technique, consisting of ILP "IntegralLeg Prothesis".
L'ILP est fabriqué à partir d'un alliage de chrome-cobalt-molybdène, avec un revêtement de surface comportant une structure forestière spongieuse de diamètre 300-1500 pm.(Voir le lien : https://link.springer.com/article/l0.l007/sl0439-0l7-1976-4)
c) Le troisième types d’implant ostéo-intégré est L’OPL « OsseointegratedProstheticLimb » qui est une version améliorée de l’ILP développé en 2013. The ILP is manufactured from a cobalt-molybdenum chromium alloy, with a surface coating with a spongy forest structure of diameter 300-1500 μm (see link: https://link.springer.com/ Article / l0.l007 / sl0439-0l7-1976-4) c) The third type of osteo-integrated implant is the OPL "OsseointegratedProstheticLimb" which is an improved version of the ILP developed in 2013.
L’OPL est fabriqué à partir d'un alliage de titane avec un revêtement de titane brut pulvérisé au plasma pour faciliter la pénétration osseuse et l'ancrage des implants, ainsi qu'une virole pour assurer une stabilité axiale de rotation initiale. (Voir le lien : https://link.springer.com/article/ 10.1007/s 10439-017-1976-4) d) Le quatrième type d’implant ostéo-intégré est le dernier progrès dans la technologie des implants (24 Février 2017), c’est un implant avec une surface de structure microporeuse pour favoriser la fixation de l'implant par croissance osseuse, ainsi que des vis transversales, fixées directement sur l’implant en traversant le fémur pour assurer une stabilité transversale initiale.(DOI l0.l007/s00l l3-017-0329-y) The OPL is made from a titanium alloy with a plasma-sprayed raw titanium coating to facilitate bone penetration and anchoring of the implants, as well as a ferrule to provide axial initial rotational stability. (See link: https://link.springer.com/article/ 10.1007 / s 10439-017-1976-4) d) The fourth type of osseointegrated implant is the latest advancement in implant technology (24). February 2017), it is an implant with a surface microporous structure to promote the fixation of the implant by bone growth, as well as transverse screws, attached directly to the implant through the femur to provide initial transverse stability. (DOI l0.l007 / s00l l3-017-0329-y)
Cependant la présente invention comporte une triple technique d’obtention et de maintien de la stabilité mécanique initiale. However, the present invention comprises a triple technique for obtaining and maintaining the initial mechanical stability.
4- Solution apportée 4- Solution provided
Cette invention comporte un système d’implants coaxiaux, possédant trois techniques (vissage, structure microporeuse, morses de fixation) pour obtenir et maintenir la stabilité mécanique afin de préparer de bonnes conditions de cicatrisation primaire, dans un objectif de réussir le processus d’ostéo-intégration. This invention comprises a system of coaxial implants, having three techniques (screwing, microporous structure, fixation walrus) to obtain and maintain the mechanical stability in order to prepare good primary healing conditions, in order to achieve the osteo process -integration.
Le présent système d’implants est composé d’un cylindre principal creux, logé dans l’os. Ce cylindre principal a une partie vissée, une partie avec une structure microporeuse pour favoriser la fixation de l’implant par la croissance osseuse, ainsi que des fenêtres permettant la sortie des morses de fixation qui sont attachées au cylindre secondaire. The present implant system consists of a hollow main cylinder, housed in the bone. This main cylinder has a screwed portion, a portion with a microporous structure to promote fixation of the implant by bone growth, as well as windows allowing the exit of the attachment hooks which are attached to the secondary cylinder.
Le présent système comporte un cylindre secondaire, divisé en trois fragments longitudinaux possédant chacune des morses de fixation. The present system comprises a secondary cylinder, divided into three longitudinal fragments each having fixing mists.
Le présent système comporte aussi une vis d’écartement initial, ainsi qu’une vis de maintien d’écartement définitif, cette vis, de maintien d’écartement d’un côté, comporte aussi de l’autre côté transcutané un système mécanique (une butée) sur lequel nous attachons la prothèse. (Voir Figure 1)
The present system also comprises an initial spacing screw, as well as a definitive spacer holding screw, this spacer holding screw on one side, also having on the other transcutaneous side a mechanical system (a stop) on which we attach the prosthesis. (See Figure 1)
Claims
1. Un système d’implants coaxiaux orthopédique ostéo-intégré(Figl) pour obtenir une réhabilitation optimale chez les patients amputéstrans-fémoraux à moignons courts, caractérisé par un système purement mécanique de fixation initiale complète, comprenant : 1. A system of osteo-integrated orthopedic coaxial implants (Figl) for optimal rehabilitation in short stump amputated-femoral patients, characterized by a purely mechanical system of complete initial fixation, comprising:
- Un cylindre creux principal (Fig 2), logé dans l’os - A main hollow cylinder (Fig 2), housed in the bone
- Un cylindre secondaire (Fig3) en trois fragments, mis à l’intérieur du cylindre principal (Fig 2) - A secondary cylinder (Fig3) in three fragments, placed inside the main cylinder (Fig 2)
- Un couvercle d’orientation (Fig4) impacté sur le cylindre principale (Fig 2), comprenant des ergots de guidage des fragments à l’intérieur du cylindre principal (Fig 2) - An orientation cover (Fig4) impacted on the main cylinder (Fig 2), comprising guide pins of the fragments inside the main cylinder (Fig 2)
- Une vis d’écartement initiale (Fig5) des fragments du cylindre secondaire (Fig3) mis à l’intérieur du cylindre principal (Fig 2) - An initial spacing screw (Fig5) fragments of the secondary cylinder (Fig3) placed inside the main cylinder (Fig 2)
- Une vis de maintien d’écartement définitif (Fig6), avec un côté transcutané - A permanent spacer (Fig6), with a transcutaneous side
- Une butée (Fig6) de côté transcutané de la vis de maintien d’écartement, qui est un système d’attachement de la prothèse orthopédique amovible - A stop (Fig6) from the transcutaneous side of the spacer holding screw, which is an attachment system of the removable orthopedic prosthesis
2. Système d’implantsorthopédique (Figl)selon la revendication 1, caractérisé en ce que ledit cylindre principal creux (Fig 2), comporte sur la face cylindrique externe : une partie vissée en bas de l’implant, une partie impactée grâce à une structure surfacique microporeuse et une partie comprenant des fenêtres pour la sortie des morses de fixation. Ce cylindre (Fig 2) comporte aussi en interne sur la face du fond, des ergots de guidage de fragments du cylindre secondaire (Fig3) 2. orthopedic implant system (Figl) according to claim 1, characterized in that said hollow main cylinder (Fig 2) comprises on the outer cylindrical face: a screwed portion at the bottom of the implant, a part impacted by a microporous surface structure and a portion including windows for the output of the fixing walrus. This cylinder (Fig 2) also has internally on the bottom face, guiding pins fragments of the secondary cylinder (Fig3).
3. Système d’implants orthopédique (Figl) selon les revendications 1 et 2, caractérisé en ce que ledit cylindre secondaire (Fig3) diviser en trois fragments, chaque fragment comporte des morses de fixation sur les surfaces extérieures. Ce cylindre secondaire (Fig3) comporte au niveau de son axe longitudinal interne une combinaison de formes mécaniques Cylindrique/Conique pour homogénéiser la translation radiale des trois fragments, pour la fixation des picots (morses de fixation) dans l’os. Ce cylindre secondaire (Fig3) comporte aussi une double rainure en haut et en bas sur chaque fragment, servant au double guidage des morses de fixation
3. System of orthopedic implants (Figl) according to claims 1 and 2, characterized in that said secondary cylinder (Fig3) divide into three fragments, each fragment has fastening mists on the outer surfaces. This secondary cylinder (Fig3) has at its inner longitudinal axis a combination of Cylindrical / Conical mechanical shapes to homogenize the radial translation of the three fragments, for fixing the pins (fixation walers) in the bone. This secondary cylinder (Fig3) also has a double groove at the top and bottom of each fragment, serving for double guiding of the fixing walers
4. Système d’implants orthopédique (Figl) selon les revendications 1 et 3, caractérisé en ce que ladite couvercle de guidage (Fig4), comporte des ergots d’orientation d’écartement de fragments du cylindre secondaire (Fig3) selon une translation radiale 4. Orthopedic implant system (Figl) according to claims 1 and 3, characterized in that said guiding cover (Fig4) has locating lugs spacing fragments of the secondary cylinder (Fig3) in a radial translation
5. Système d’implants orthopédique (Figl) selon les revendications 1 à 4, caractérisé en ce que ladite vis d’écartement initiale (Fig5), avec une combinaison de forme mécanique cylindrique/conique pour homogénéiser la fixation des picots par une translation radiale, avec un double guidage grâce aux ergots sur le couvercle et aussi sur la face du fond de l’implant principal (Fig 2), afin d’éviter le blocage du système mécanique de fixation 5. orthopedic implant system (Figl) according to claims 1 to 4, characterized in that said initial spacing screw (Fig5), with a combination of cylindrical / conical mechanical shape to homogenize the fixing of the pins by a radial translation , with a double guide thanks to the lugs on the lid and also on the face of the bottom of the main implant (Fig 2), in order to avoid the locking of the mechanical fixing system
6. Système d’implants orthopédique (Figl) selon les revendications 1, 3 et 5, caractérisé en ce que ladite vis de maintien définitif d’écartement (Fig6), comporte la même combinaison de la forme mécanique cylindrique/conique avec des rayons de dimensions un peu plus grand que celles de la vis d’écartement initial (Fig 5) 6. orthopedic implant system (Figl) according to claims 1, 3 and 5, characterized in that said final spacer maintenance screw (Fig6), comprises the same combination of the cylindrical / conical mechanical shape with radii of dimensions slightly larger than those of the initial spreader screw (Fig 5)
7. Système d’implants orthopédique (Figl) selon les revendications 1, 3, 5 et 6, caractérisé en ce que ladite vis de maintien définitif d’écartement (Fig6), comporte sur la partie transcutanée de l’implant, une butée (Fig6) qui est un système mécanique sous forme d’une pièce jointe pour une prothèse externe amovible après qu'un programme de réhabilitation est lancé
7. Orthopedic implant system (Figl) according to claims 1, 3, 5 and 6, characterized in that said permanent spacer spacer (Fig6), has on the transcutaneous part of the implant, a stop ( Fig6) which is a mechanical system in the form of an attachment for a removable external prosthesis after a rehabilitation program is launched
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MA41535 | 2017-11-27 | ||
| MA41535A MA41535B1 (en) | 2017-11-27 | 2017-11-27 | Osteointegrated orthopedic implant intended for femoral amputations with short stumps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2019103587A1 true WO2019103587A1 (en) | 2019-05-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/MA2018/000021 WO2019103587A1 (en) | 2017-11-27 | 2018-11-26 | Osseointegrated orthopaedic implant for femoral amputations with short stumps |
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| Country | Link |
|---|---|
| MA (1) | MA41535B1 (en) |
| WO (1) | WO2019103587A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5725581A (en) * | 1992-10-29 | 1998-03-10 | Medevelop Ab | Anchoring element supporting prostheses or a joint mechanism for a reconstructed joint |
| US20050102038A1 (en) * | 2003-11-07 | 2005-05-12 | Eska Implants Gmbh & Co. | Subcutaneous, intramuscular bearing for a rigid transcutaneous implant |
| US20090062928A1 (en) * | 2007-09-05 | 2009-03-05 | Mark Pitkin | In-bone implantable shaft for prosthetic joints or for direct skeletal attachment of external limb prostheses and method of its installation |
| US20150351940A1 (en) * | 2013-01-29 | 2015-12-10 | Les Hospitaux Universitaires de Geneve | Implant for lower limb amputation |
-
2017
- 2017-11-27 MA MA41535A patent/MA41535B1/en unknown
-
2018
- 2018-11-26 WO PCT/MA2018/000021 patent/WO2019103587A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5725581A (en) * | 1992-10-29 | 1998-03-10 | Medevelop Ab | Anchoring element supporting prostheses or a joint mechanism for a reconstructed joint |
| US20050102038A1 (en) * | 2003-11-07 | 2005-05-12 | Eska Implants Gmbh & Co. | Subcutaneous, intramuscular bearing for a rigid transcutaneous implant |
| US20090062928A1 (en) * | 2007-09-05 | 2009-03-05 | Mark Pitkin | In-bone implantable shaft for prosthetic joints or for direct skeletal attachment of external limb prostheses and method of its installation |
| US20150351940A1 (en) * | 2013-01-29 | 2015-12-10 | Les Hospitaux Universitaires de Geneve | Implant for lower limb amputation |
Also Published As
| Publication number | Publication date |
|---|---|
| MA41535B1 (en) | 2019-10-31 |
| MA41535A1 (en) | 2019-06-28 |
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