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WO2012095879A1 - Composant tibial non cimenté pour implant de prothèse de genou - Google Patents

Composant tibial non cimenté pour implant de prothèse de genou Download PDF

Info

Publication number
WO2012095879A1
WO2012095879A1 PCT/IT2011/000419 IT2011000419W WO2012095879A1 WO 2012095879 A1 WO2012095879 A1 WO 2012095879A1 IT 2011000419 W IT2011000419 W IT 2011000419W WO 2012095879 A1 WO2012095879 A1 WO 2012095879A1
Authority
WO
WIPO (PCT)
Prior art keywords
tibial
plate
stem
projections
bone
Prior art date
Application number
PCT/IT2011/000419
Other languages
English (en)
Inventor
Maurizio FORTI
Original Assignee
Forti Maurizio
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
Application filed by Forti Maurizio filed Critical Forti Maurizio
Publication of WO2012095879A1 publication Critical patent/WO2012095879A1/fr

Links

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
    • A61F2/389—Tibial components
    • 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
    • A61F2002/30108—Shapes
    • A61F2002/3011—Cross-sections or two-dimensional shapes
    • A61F2002/30159—Concave polygonal shapes
    • A61F2002/30179—X-shaped
    • 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
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30405—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by screwing complementary threads machined on the parts themselves
    • 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
    • A61F2002/30841—Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes
    • A61F2002/30845—Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes with cutting edges
    • 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

Definitions

  • the present invention refers to a non-cemented tibial component that can be decomposed for a knee prosthesis implant.
  • knee prosthesis surgery has strongly evolved in the last years, dealing with the need of patients of having a quicker re-education and a lower intervention invasiveness.
  • a surgeon therefore has more and more refined surgical techniques available, which allow him to safely perform the knee prosthesis intervention.
  • the knee prosthesis replacement intervention provides to intervene on femur and tibia components by implanting elements that functionally replace these two components of the physiologic articulation: currently, the art proposes to use a tibial component composed of a metallic support plate equipped with a projection to be inserted inside a medullary tibia recess, such plate being adapted to be articulated with the femur component by interposing a suitable spacer (or insert) generally made of polyethylene.
  • the prosthesis that is applied to patients with a good health is the non-cemented one, secured only through pressure so that the biologic bone- integration phases, helped by the materials with which the prosthesis is coated or directly produced, are those that perform the final 'joining'.
  • obtaining the primary plant stability is a process that requires time, since it is demanded to the degree of obtained bone-integration.
  • possible revision interventions of the implant are more complex and invasive.
  • object of the present invention is solving the above prior art problems by providing a non-cemented tibial component that can be decomposed for a knee prosthesis implant that allows obtaining an immediate primary stability of the implant itself.
  • Another object of the present invention is providing a non-cemented tibial component that can be decomposed for a knee prosthesis implant that allows an easy revision of the implant whenever necessary .
  • Figure 1 shows a front view of a preferred embodiment of a first element of the tibial component according to the present invention
  • Figure 2 shows a top view of the element of Figure 1;
  • Figure 3 shows a side view of the element of Figure 1;
  • Figure 4 shows a front view of a preferred embodiment of a second element of the tibial component according to the present invention
  • Figure ⁇ 5 shows a top view of the element of Figure 4.
  • Figure 6 shows a side view of the tibial component according to the present invention once having been assembled
  • Figure 7 shows a front view of the tibial component of Figure 6.
  • the non-cemented tibial component 1 that can be decomposed according to the present invention for a knee prosthesis implant is composed of at least one tibial plate 3 and of at least one tibial stem 5, such tibial plate 3 being equipped with at least one connection seat 7 for such tibial stem 5.
  • a lower surface of the tibial plate 3 adapted to be overlapped to the tibial plate of the bone head of the tibial bone is equipped with at least two projections 13: in particular, such projections 13 are equipped with a suitably sharpened profile adapted to make it easier to insert it inside the bone material of the tibial plate, and are developed along the major transverse axis T-T of the tibial plate 3 in diametrically opposite positions with respect to the seat 7.
  • the projections -13 are suitably slanted with respect to an axis P-P orthogonal to the lower surface of the tibial plate 3, and frontward with respect to the longitudinal axis of the tibial bone, in a side projection once having implanted the tibial plate 3 itself, by an angle a, such angle a being preferably equal to 30°.
  • Such front slanting is advantageously aimed to contrast the stresses developed by the rotation of the femur component of the knee prosthesis implant when walking, with a mainly backward-frontward direction.
  • the external surface of the tibial stem 5 is smooth, and, moreover, the seat 7 is internally equipped with at least one first threaded portion 9 adapted to be engaged with a corresponding second threaded portion 11 made externally to the tibial stem 5 when connecting the tibial plate 3 to the tibial stem 5 itself.
  • this latter one has its own longitudinal axis L-L in a substantially parallel position to the axis P-P, and therefore oriented along the longitudinal axis of the tibial bone .
  • Assembling of the tibial plate 3 and the tibial stem 5 on the suitably prepared tibia therefore allows advantageously obtaining a primary (immediate) stability of the implant due to the different axes of the action exerted on the tibial bone by the projections 13 and the stem 5 itself.
  • the secondary stability derived by the bone integration can be obtained by covering part of the surfaces in contact with the bone with the material that will be deemed most suitable, such as, for example, plasma spray, hydroxy-apatite, etc.
  • the tibial component 1 according to the present invention as previously described further allows an easy implant revision when necessary: in fact, the tibial stem 5 can be removed from the tibial bone with torsion stresses that are more efficient than the traction stresses necessary for removing the tibial components of the prior art implants: moreover, the tibial plate 3 without the tibial stem 5 allows an easier aggression of the lower bone-integrated surface through a tangential ungluing .

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (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 porte sur un composant tibial non cimenté (1), qui peut être décomposé pour un implant de prothèse de genou, composé d'au moins une plaque tibiale (3) et d'au moins une tige tibiale (5), une telle plaque tibiale (3) étant équipée d'au moins un siège de liaison (7) à une telle tige tibiale (5) et une surface inférieure d'une telle plaque tibiale (3) conçue pour être superposée à une tête d'os d'un os tibial étant équipée d'au moins deux saillies (13).
PCT/IT2011/000419 2011-01-14 2011-12-27 Composant tibial non cimenté pour implant de prothèse de genou WO2012095879A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO2011A000017 2011-01-14
ITTO2011A000017A IT1406772B1 (it) 2011-01-14 2011-01-14 Componente tibiale scomponibile non cementata di impianto protesico del ginocchio.

Publications (1)

Publication Number Publication Date
WO2012095879A1 true WO2012095879A1 (fr) 2012-07-19

Family

ID=43975600

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2011/000419 WO2012095879A1 (fr) 2011-01-14 2011-12-27 Composant tibial non cimenté pour implant de prothèse de genou

Country Status (2)

Country Link
IT (1) IT1406772B1 (fr)
WO (1) WO2012095879A1 (fr)

Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3429157A1 (de) 1984-08-08 1986-02-20 Harry Prof. Dr.med. 1000 Berlin Buse Zementlos implantierbares schienbeinplateau-implantat
FR2625096A1 (fr) 1987-12-29 1989-06-30 Hummer Jacques Prothese totale de genou sans ciment
EP0450121A1 (fr) 1990-04-04 1991-10-09 S + G Implants Gmbh Partie de tibia d'une endoprothèse pour l'articulation du genou
US5217498A (en) 1990-04-04 1993-06-08 S & G Implants Gmbh Tibial component of a knee joint prosthesis
FR2719213A1 (fr) 1994-04-27 1995-11-03 Fii Implant tibial pour prothèse du genou.
EP0689808A1 (fr) 1994-06-03 1996-01-03 Provis S.A. Ensemble prothétique de l'articulation du genou
US5609641A (en) * 1995-01-31 1997-03-11 Smith & Nephew Richards Inc. Tibial prosthesis
FR2738739A1 (fr) * 1995-09-15 1997-03-21 Rousseau Jacques Marie Prothese de genou unicondylienne du type dit "a glissement"
US5658341A (en) 1993-03-10 1997-08-19 Medinov S.A. Tibial implant for a knee prosthesis
FR2787012A1 (fr) 1998-12-11 2000-06-16 Bex Anne Marie Endo-prothese de genou
EP1190686A1 (fr) 2000-09-22 2002-03-27 Implants Industrie Prothèse de genou, totale et modulaire
FR2838330A1 (fr) 2002-04-12 2003-10-17 Medical Solution Ensemble tibial pour l'articulation du genou
EP1693026A1 (fr) 2005-02-22 2006-08-23 Dominique Le Foll Implant tibial et prothèse de genou unicondylienne le comportant
WO2007029276A2 (fr) * 2005-09-06 2007-03-15 Fin-Ceramica Faenza S.P.A. Broche d'ancrage pour prothese articulaire, prothese articulaire comprenant ladite broche, constituant tibial et prothese articulaire pour le genou comprenant ledit constituant tibial
FR2908977A1 (fr) * 2006-11-23 2008-05-30 Tornier Sas Element prothetique pourvu de moyens d'immobilisation sur un os.
US20100010635A1 (en) 2005-02-17 2010-01-14 Zimmer Technology, Inc. Tibial trialing assembly and method of trialing a tibial implant
US20100185203A1 (en) 2001-03-05 2010-07-22 Hudson Surgical Design, Inc. Femoral prosthetic implant
EP2257245A1 (fr) 2008-03-07 2010-12-08 Aesculap AG Implant médical et endoprothèse de l'articulation du genou

Patent Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3429157A1 (de) 1984-08-08 1986-02-20 Harry Prof. Dr.med. 1000 Berlin Buse Zementlos implantierbares schienbeinplateau-implantat
FR2625096A1 (fr) 1987-12-29 1989-06-30 Hummer Jacques Prothese totale de genou sans ciment
EP0450121A1 (fr) 1990-04-04 1991-10-09 S + G Implants Gmbh Partie de tibia d'une endoprothèse pour l'articulation du genou
US5217498A (en) 1990-04-04 1993-06-08 S & G Implants Gmbh Tibial component of a knee joint prosthesis
US5658341A (en) 1993-03-10 1997-08-19 Medinov S.A. Tibial implant for a knee prosthesis
FR2719213A1 (fr) 1994-04-27 1995-11-03 Fii Implant tibial pour prothèse du genou.
EP0689808A1 (fr) 1994-06-03 1996-01-03 Provis S.A. Ensemble prothétique de l'articulation du genou
US5609641A (en) * 1995-01-31 1997-03-11 Smith & Nephew Richards Inc. Tibial prosthesis
FR2738739A1 (fr) * 1995-09-15 1997-03-21 Rousseau Jacques Marie Prothese de genou unicondylienne du type dit "a glissement"
FR2787012A1 (fr) 1998-12-11 2000-06-16 Bex Anne Marie Endo-prothese de genou
EP1190686A1 (fr) 2000-09-22 2002-03-27 Implants Industrie Prothèse de genou, totale et modulaire
US20100185203A1 (en) 2001-03-05 2010-07-22 Hudson Surgical Design, Inc. Femoral prosthetic implant
FR2838330A1 (fr) 2002-04-12 2003-10-17 Medical Solution Ensemble tibial pour l'articulation du genou
US20100010635A1 (en) 2005-02-17 2010-01-14 Zimmer Technology, Inc. Tibial trialing assembly and method of trialing a tibial implant
EP1693026A1 (fr) 2005-02-22 2006-08-23 Dominique Le Foll Implant tibial et prothèse de genou unicondylienne le comportant
WO2007029276A2 (fr) * 2005-09-06 2007-03-15 Fin-Ceramica Faenza S.P.A. Broche d'ancrage pour prothese articulaire, prothese articulaire comprenant ladite broche, constituant tibial et prothese articulaire pour le genou comprenant ledit constituant tibial
FR2908977A1 (fr) * 2006-11-23 2008-05-30 Tornier Sas Element prothetique pourvu de moyens d'immobilisation sur un os.
EP2257245A1 (fr) 2008-03-07 2010-12-08 Aesculap AG Implant médical et endoprothèse de l'articulation du genou

Also Published As

Publication number Publication date
IT1406772B1 (it) 2014-03-07
ITTO20110017A1 (it) 2011-04-15

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