WO2008000496A2 - Implant orthopédique - Google Patents

Implant orthopédique Download PDF

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Publication number
WO2008000496A2
WO2008000496A2 PCT/EP2007/005777 EP2007005777W WO2008000496A2 WO 2008000496 A2 WO2008000496 A2 WO 2008000496A2 EP 2007005777 W EP2007005777 W EP 2007005777W WO 2008000496 A2 WO2008000496 A2 WO 2008000496A2
Authority
WO
WIPO (PCT)
Prior art keywords
component
implant
implant according
mechanical coupling
connection
Prior art date
Application number
PCT/EP2007/005777
Other languages
German (de)
English (en)
Other versions
WO2008000496A3 (fr
Inventor
Christoph Haessig
Original Assignee
Plus Orthopedics Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE102006040501A external-priority patent/DE102006040501A1/de
Application filed by Plus Orthopedics Ag filed Critical Plus Orthopedics Ag
Publication of WO2008000496A2 publication Critical patent/WO2008000496A2/fr
Publication of WO2008000496A3 publication Critical patent/WO2008000496A3/fr

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Classifications

    • 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
    • A61F2/38—Joints for elbows or knees
    • A61F2/3859—Femoral components
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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
    • A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4637—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for connecting or disconnecting two parts of a prosthesis
    • 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
    • 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
    • A61B17/68—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
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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
    • A61F2002/30667—Features concerning an interaction with the environment or a particular use of the prosthesis
    • A61F2002/3069—Revision endoprostheses
    • 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
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30772—Apertures or holes, e.g. of circular cross section
    • A61F2002/30777—Oblong apertures
    • 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
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30772—Apertures or holes, e.g. of circular cross section
    • A61F2002/30784—Plurality of holes
    • A61F2002/30785—Plurality of holes parallel
    • 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
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
    • 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
    • A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4637—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for connecting or disconnecting two parts of a prosthesis
    • A61F2002/4641—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for connecting or disconnecting two parts of a prosthesis for disconnecting
    • 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
    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • 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
    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/0033—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
    • 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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0004—Rounded shapes, e.g. with rounded corners
    • 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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0017—Angular shapes
    • A61F2230/0019—Angular shapes rectangular
    • 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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0017—Angular shapes
    • A61F2230/0023—Angular shapes triangular
    • 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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0028—Shapes in the form of latin or greek characters
    • A61F2230/005—Rosette-shaped, e.g. star-shaped

Definitions

  • the invention relates to an oithopadic implant having the features of the preamble of claim 1
  • Em such implant is manufactured by the applicant and vertneben.
  • Partial prosthetic fractures have recently become more prominent. Responsible for this are non-demographic reasons, d. H. the people live longer. In addition, people are more active in their old age than in the past and get a joint already in their younger years. Among others, the following may be affected: Bone proximal / distal femur, proximal tibia, pioximal humerus.
  • Knee implants one thigh part (femoral condyle) and one lower leg part (tibial plateau). These parts are grazing ai koipeiveitiaghchen made of metal alloy, mostly a cobalt-chiom alloy. A plastic plate is attached to the tibial plateau to minimize the friction between the top and bottom joint
  • the individual implant components are then either fixed in the bone with a quick-holding, self-supporting plastic, cemented or cemented into the bone and anchored cement-free.
  • the bone then has to grow to the implant
  • RT-PLUS 1 M Modulai Solution which carry out an axis-guided rotation-knee endoprosthesis system
  • Deiaitic implants are modularly constructed from various components
  • these implants have a tibial PE insert, a tibial component and a tibial block.
  • the femoral component or tibial component can each be fitted with different stems in modular combiners to adapt the implant to the patient j e réelle the shafts can be used as cement-free or cement derive shafts
  • the legs are either cemented or ce- mented with cementum, with a pnmaie and secondary stable should be provided between the implant and the bone
  • the object of the invention is to provide an orthopedic implant, by which the risk of periprosthetic fractures can at least be reduced and / or in a further revision the implantation of a standard revision prosthesis instead of a more complicated tumor prosthesis or special design is favored.
  • the invention is based on the idea of providing an orthopedic implant, in particular a knee, a hip, a shoulder or other joints, which comprises at least two components.
  • a releasable connection between at least one first component and at least one second component is provided, which is adapted such that the second component in the implanted state, ie after insertion of the implant, is revidierbai and the other component remains in situ
  • the losbaie Veibmdung between the two components has the advantage that the implant, d. h the artificial joint, with a trauma implant, for example, a dream nail or shaft can graze combined.
  • the second component ie the trauma component, remains in the bone until it has healed. After disseminating the fracture, remove the second component wildly. This is made possible by the detachable connection being adapted such that the second component can be revised in the implanted state.
  • the first component for example a femoral component, remains in situ after osteointegration. In this way, the danger of pi ⁇ iothetischer fractures is lowered above the shaft / stem tip.
  • the invention thus enables the combination of an implant, ie. an artificial joint with a trauma component.
  • the first component with the second component is axially and / or rotationally veibmdbai. This wild created a stable arrangement of the first and second components, which allows a safe power transmission, at the same time a lifting of the binding for the purpose of revision is possible.
  • the first component may have at least one opening through which the second component is removable for revision. This means that the second component can move through the first component and be removed from the Koiper
  • the first and second components may be dynamic or static lockable, so that the location of the two components is either veianderbar or fixed relative to the bone.
  • the second component can have stabilizing agents, in particular for the angular stabilization of bone fragments, which enables a particularly good healing of the fracture.
  • Removal of the second component from the bone is facilitated by preferably having the second component having a surface adapted to prevent bone material from growing thereon.
  • the first component comprises a femoral component and the second component comprises a shaft, so that the orthopedic implant can be used as a knee implant, without the invention being restricted thereto
  • the releasable connection or the mechanical coupling may comprise a threaded arrangement with an internal thread of the first component and an external thread of the second component.
  • the threaded arrangement an axial stop and / or a
  • the releasable connection or the mechanical coupling may include a frictional connection or a positive connection.
  • a further possibility to disassemble the loose coupling or the mechanical coupling is then to provide a locking member which is screwed into the first component and axially fixes the second component.
  • the loose assembly or mechanical coupling may comprise a pin or a pin shaft.
  • the quei odei inclined to the longitudinal axis of the second component is angeoidnet and the éiste and second component in each case at least partially duichgieift
  • the releasable connection or the mechanical coupling may comprise a Spieizkonus in the second component, in which a spreader derait is arranged that between the former and Alternatively, the losbaie Veibmdung or mechanical coupling may have a losbaie Rastvei gleich In the Rastvei gleich at least one in the first component voiliableewitbohiung voilocation be Duich theippobohiung can Loseweikzeug e In the case of an infeed willow that responds to the circlip in the air condition and loosens it, alternatively, the loose cube or the mechanical coupling may comprise a bayonet circlip
  • FIG. 2 shows a side view of the implant according to FIG. 1,
  • FIG. 3 is a side view of the implant according to FIG. 1 with dissolved body
  • FIG. 4 shows a side view of the implant according to FIG. 3, wherein the two-component component is partially pulled out
  • FIG. 5 shows the implant according to FIG. 1 in the inserted state
  • FIG. 5 shows the second one
  • Component is partially hot drawn
  • 6 shows the implant according to FIG. 5 with a completely hot-drawn second component
  • FIG. 7 shows two views of a femur with an implanted femoral condyle according to the exemplary embodiment of the present invention
  • FIG. 12 shows a perspective view of the first component or of the primate implant according to an embodiment of the invention
  • FIG. 14 shows a section through the implant according to FIG. 13 in the region of a vertical rotation
  • FIG. 15 shows a section through an implant with a pen needle
  • FIG. 16 shows a section through an implant with a spreading ligament
  • FIGS. 1 to 4 show an orthopedic implant or implant system according to an exemplary embodiment with its most important components.
  • This implant is used as a knee prosthesis.
  • the invention is not an alleged one It is also limited to implants on the hips, shoulders or other joints
  • the implant comprises at least two components 11, 12, and in this embodiment example a femoral component 11 'as well as a shaft 12' or a thumb nail Dei shaft 12 'and the femoral component 11' are a loose connection 13 with each other
  • the receiving sleeve 16 and the femoral component 11 ' can be formed in one piece or can be screwed together in place of the receiving sleeve 16
  • Other means for coupling the trauma nail or shank 12 'with the femur component 11' may be provided.
  • Screw connections or other coupling elements enabling a loose connection between the shank 12 'and the femur component 11' are possible, whereby at the same time a revision of the shank 12 'in implantieiten condition
  • the axial and the firm fixation of the shank 12 is carried out by a bolt 17, which has holes in the receiving sheath and in the shank 12 'duichgieift, as shown in FIGS. 1, 2.
  • Anteie Old of the fixing of the shank 12 is possible. voiausset, these can be solved
  • Shaft 12 ' has means 15 for stabilizing it, especially for bending of bone fragments.
  • These means 15 comprise boreholes at the pioximal end of shaft 12', as in FIGS. 1 to 4, the above-mentioned holes are shown in FIG. So the means 15 zui Stabihsieiung, can suitable Fixieiungsoigane, in particular screws, felt that serve zui stabilization or angle stabilization of bone fragments
  • the surface of the stem 12' is such that bone material does not grow thereon.
  • the function of the shaft 12 ' is supported as Tiaumakomponente
  • the femoral component 11 ' is designed as a femoral condyle and has an anatomical patellar groove 18 for patellar guidance.
  • an opening 14 is arranged, which is aligned with the longitudinal axis of the shank 12 '.
  • the opening 14 in this case extends into the receiving sleeve 16, so that the shank 12' can be moved through the opening 14, as in FIGS , 5 are available.
  • the implant shown in FIGS. 1 to 4 is used, the femoral component 11 'being anchored p ⁇ mar and secondarily stably.
  • the shaft component 12 ' is locked dynamically or statically with screws, so that the fracture is stabilized against rotation, so that it can grow together.
  • the stabilization takes place proximally by means of screws and distally via the fixation on the femoral component 11 'and thereby indirectly with the condyles of the femoral component 11'.
  • the shaft 12' or the trauma nail can be removed through the femoral component 11 'after the fracture has healed , This can also be done with a small patella access
  • the concept underlying the concept is realized, in which the first and second components 11, 12 of the orthopedic implant 10 are detachably connected to each other, wherein the releasable connection 13 is designed so that the second component 12 can be revised in the implanted state is.
  • the revision of the second component 12 in the implanted state takes place concretely in that the locking of the second component 12 is released both distally and pioximally and the second component 12, i. H. the shaft 12 'pulled out wild through the provided in the femoral component 1 1' opening 14 in the direction of the arrow shown in Fig. 4.
  • the distance of the shaft 12 ' is also well recognizable in Figures 5 and 6.
  • the erfmdungsgehold provided detachable connection 13, which allows a revision of the second component in the implanted state, creates the prerequisite for an oithopadic implant, so an artificial joint with a trauma product, such as a Traumanagcl can be combined. After the fracture has been resolved, the trauma product can be removed and the oithopadic implant remains in situ after osteomegmentation.
  • the exemplary embodiment of a knee implant according to the invention is also applicable to other orthopedic implants, for example for shoulders, hips or other joints. This means that even in these cases an oithopaetic implant is combined with a trauma product, whereby the tiaumaproduct is removable after a successful fracture.
  • the mechanical coupling of the trauma product with the implant can be done in any way, provided that the removal of the trauma product after healing is possible.
  • a patient with a Femuimarknagel the wild because of the high age of the patient in situ, crashes.
  • a fracture is created distally to the tip of the nail, which is to be treated with a retrograde nail.
  • an arthiosis is diagnosed.
  • the eifmdungsgeABAe knee prosthesis is implanted with nail (trauma knee) Since in this case the nail in the patient Wud even after healing of the fracture wud, the nail or generally the Traumapiodukt also be firmly connected to the implant, in particular the knee prosthesis.
  • a patient with a hip joint and knee osteoarthritis falls.
  • the distal end of the prosthesis tip is fractured.
  • the Huftschaft j edoch grown stably.
  • a plate restoration would be inadequate, so that a knee prosthesis with mtiamedularem nail (trauma knee) used or implanted wild. It is also possible here that the nail is connected to the tip of the hoof shaft.
  • Another possible application of the invention is then to combine a spacer implant with a trauma product, in particular a nail.
  • the spacer implant including the nail is removed and, for example, a knee prosthesis implanted.
  • the nail can be left and only the proximal screws removed.
  • FIG. 8 shows a partial section through an implant having a first component 11 and a second component 12 mechanically coupled thereto, the first component 11 providing a primary component which remains in situ after implantation.
  • the second component 12 is a trauma component.
  • the mechanical coupling between the two components 1 1, 12 is designed as a detachable connection 13, the thread Anoidoidnung 22nd In the first component 11 is an internal thread and in the second component 12 a matching external thread voiten so that the two components 11, 12 can be screwed together.
  • an axial stop 23 is considered.
  • the axial stop 23 has a radially projecting collar at one axial end of the second component 12, which in the screwed state rests against a shoulder 23a which is complementary to the stop 23 and which is seen in the first component 11.
  • the threaded scanning arrangement 22 may have an anti-rotation device 24, for example in the form of a pin or a feather key, which form-lockingly connects the stop or the associated collar of the second component 12 with the first component 11.
  • non-positive connection form-fitting connections 26 may be provided, wherein the positive connection between the first and the second component 11, 12 can be realized in various ways, for example in the form of rectangular, triangular or rosette-like cross sections of the two components 11, 12 in the area the releasable connection 13 (Fig. 10, 1 1)
  • the lock nut 27 fixieit the second component 12 in the axial direction.
  • the second component at its axial end on a collar 27a, which is arranged between emci in the first component 1 1 provided shoulder 27b and the Kontermuttei 27
  • the lock nut 27 presses in the implanted state, the collar 27a against the Schultei 27b
  • the Konteimuttei 27 may have a Veicardsicheiung 27c, which a foim gleichige Veibmdung between the Konteimuttei 27 and the ei most component 11 hinist
  • the loose connection 13 or the mechanical coupling can have a pin or a pin shaft 28, which at least partially through-transports both the first and second components 11, 12.
  • the pin or pencil shaft 28 is related to FIG the longitudinal axis of the second component 12 inclined angeoidnet Dei pin or the Stiftschiaube 28 may also be angeoidnet transverse or perpendicular to the longitudinal axis
  • the detachable element 13 then exists to provide a direction of movement between the first and second components 11, 12.
  • the splicing cone comprises a splitting cone which is formed in the axial end of the second component 12 Spieizstoff 30, msbesondeic a Spieizschiaube used, the Spieizkonus 29 duich a movement m the longitudinal direction of the second component 12 iadial outward Daduich wud set a losbaie kiaft- MUSTige connection between the first and second component (Fig 16)
  • the Kiaftnchtung is duich the arrows are shown in FIG. 16
  • FIG. 17 An alternative releasable connection 13 is shown in FIG. 17, which comprises a latching closure 31.
  • the latching latch 31 has one or more latching lugs which are formed at the axial end of the second component 12.
  • the latching lug 31 a engages in a locked recess in a complementary recess In this case component 11 is inserted, thus avoiding the two components 11, 12.
  • At least one, preferably two, access holes 32 are provided in the component 11, into which a loose tissue, for example a pin, is inserted whilbohiung 32 and the (not shown) Loseweikzeuges the locking lugs 31 a from dei complementary recess in dei most component 1 1 grazing george, so that the two components 11, 12 fell and disloyed ien
  • the losbaie Veiitati can be easily obtained in Foim a Ba j onettverPark
  • Both the bayonet loop 33 according to FIG. 18 and the latching cone 31 according to FIG. 17 and the splicing cone 29 as shown in FIG. 16 can have a rotation or vatting arrangement corresponding to the anticlocking according to FIG. 14 or FIG. 8
  • FIG. 18 shows a locking pin 34 or a threaded pin presented as Veidiehsicheiung
  • the oithopadic implant was claimed to be both a two or more component implant with a pial component adapted for osteometgiation and a trauma component that is levidatable after implantation.
  • the orthopedic implant is also used as a priming implant (without trauma component), for example 12, the implant according to FIG. 12 is adapted so that it can be mechanically coupled to a tiaumacomponent, for example for retrogial nailing.
  • the implant or the piocardial component according to FIG. 12 has a coupling means 35 which is suitable for a loose connection with
  • the pnmark component or the pumai implant corresponds to the first component 11 of the embodiment according to FIGS. 1 to 4.
  • the coupling means 35 is designed as a sleeve, so that the trauma component is inserted in the event of surgery and thus can lodge with the bone to be treated, so that the coupling agent makes it possible to access the bone to be treated.
  • the coupling means 35 or the sleeve has the function of providing a detachable connection between the trauma implant and the pump implant 11
  • the dream implant sucks doing dei second component 12 and the shaft 12 'according to FIGS 1 to 4 for the losbaie between the two components 11, 12, the sleeve or the coupling means 35 may be manufacturedfuhit as shown in Figures 8 to 18, that is, the coupling means 35, for example, an internal thread (Fig 8), a cone (Fig 9), etc ..
  • the pumping implant or the iced component 11 according to FIG. 12 has the advantage that it can be used without a tiaumimplant or implanted in the case of emei After the implantation of the implant there may be implanted a tiaumimplant implant mechanically connected to the already existing osteointegrated piimai implant 11. After completion of the healing process, the tiaum implant may rest on the loose connection 13 with the implant 11 be removed
  • the implant implant 11 according to FIG. 12 makes it possible to replace the Tiauma implant by surgery, for example if a long or shorter stem or nail is required as a trauma implant
  • the invention is not limited to dei-type implants.
  • the invention is generally limited to other joint implants as primary implants, which are adapted for mechanical coupling with a tiaum implant and have a suitable coupling means 35
  • Lock nut a collar b shoulder c anti-rotation lock

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Transplantation (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Cardiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Abstract

L'invention concerne un implant orthopédique (10) notamment destiné au genou, à la hanche, à l'épaule ou à d'autres articulations, comportant au moins deux composants (11, 12). L'invention est caractérisée en ce qu'une connexion amovible (13) est prévue entre au moins un premier composant (11) et au moins un deuxième composant (12), ladite connexion étant conçue de telle manière que le deuxième composant (12) peut être contrôlé à l'état implanté.
PCT/EP2007/005777 2006-06-29 2007-06-29 Implant orthopédique WO2008000496A2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102006029934.5 2006-06-29
DE102006029934 2006-06-29
DE102006040501A DE102006040501A1 (de) 2006-06-29 2006-08-30 Orthopädisches Implantat
DE102006040501.3 2006-08-30

Publications (2)

Publication Number Publication Date
WO2008000496A2 true WO2008000496A2 (fr) 2008-01-03
WO2008000496A3 WO2008000496A3 (fr) 2008-02-14

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/005777 WO2008000496A2 (fr) 2006-06-29 2007-06-29 Implant orthopédique

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Country Link
WO (1) WO2008000496A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011139785A (ja) * 2010-01-07 2011-07-21 Nakashima Medical Co Ltd ネイル挿入型人工膝関節
WO2012093961A1 (fr) * 2011-01-05 2012-07-12 Milux Holding S.A. Dispositif pour articulation du genou
EP3135253A1 (fr) * 2015-08-31 2017-03-01 Rainer Baumgart Prothese implantable destinee au remplacement de l'articulation du genou humain

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0175989A2 (fr) * 1984-09-26 1986-04-02 S + G Implants Gmbh Partie fémorale d'une endoprothèse de l'articulation d'un genou
EP0214885A1 (fr) * 1985-08-12 1987-03-18 Jean-Alain Epinette Composant cotyloidien de prothèse de hanche, à implanter sans ciment
US5133764A (en) * 1983-05-06 1992-07-28 Pappas Michael J Multi-component prosthesis with increased wall flexibility and segmented locking ridge to facilitate component assembly
EP1216669A2 (fr) * 2000-12-15 2002-06-26 Biomet, Inc. Pièce fémorale de prothèse d'articulation du genou
DE10233204A1 (de) * 2002-07-17 2004-01-29 Merete Medical Gmbh Zementierbare Hüftgelenkendoprothese als Ersatz des proximalen Femur
EP1532945A2 (fr) * 2003-11-18 2005-05-25 Depuy Products, Inc. Système modulaire d'implants

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5133764A (en) * 1983-05-06 1992-07-28 Pappas Michael J Multi-component prosthesis with increased wall flexibility and segmented locking ridge to facilitate component assembly
EP0175989A2 (fr) * 1984-09-26 1986-04-02 S + G Implants Gmbh Partie fémorale d'une endoprothèse de l'articulation d'un genou
EP0214885A1 (fr) * 1985-08-12 1987-03-18 Jean-Alain Epinette Composant cotyloidien de prothèse de hanche, à implanter sans ciment
EP1216669A2 (fr) * 2000-12-15 2002-06-26 Biomet, Inc. Pièce fémorale de prothèse d'articulation du genou
DE10233204A1 (de) * 2002-07-17 2004-01-29 Merete Medical Gmbh Zementierbare Hüftgelenkendoprothese als Ersatz des proximalen Femur
EP1532945A2 (fr) * 2003-11-18 2005-05-25 Depuy Products, Inc. Système modulaire d'implants

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011139785A (ja) * 2010-01-07 2011-07-21 Nakashima Medical Co Ltd ネイル挿入型人工膝関節
WO2012093961A1 (fr) * 2011-01-05 2012-07-12 Milux Holding S.A. Dispositif pour articulation du genou
US10251754B2 (en) 2011-01-05 2019-04-09 Peter Forsell Knee joint device
EP3135253A1 (fr) * 2015-08-31 2017-03-01 Rainer Baumgart Prothese implantable destinee au remplacement de l'articulation du genou humain
US10136996B2 (en) 2015-08-31 2018-11-27 Rainer Baumgart Implantable prosthesis for replacing the human knee joint

Also Published As

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WO2008000496A3 (fr) 2008-02-14

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