EP1420724A1 - Acetabulum artificiel - Google Patents

Acetabulum artificiel

Info

Publication number
EP1420724A1
EP1420724A1 EP01956733A EP01956733A EP1420724A1 EP 1420724 A1 EP1420724 A1 EP 1420724A1 EP 01956733 A EP01956733 A EP 01956733A EP 01956733 A EP01956733 A EP 01956733A EP 1420724 A1 EP1420724 A1 EP 1420724A1
Authority
EP
European Patent Office
Prior art keywords
insert
teeth
pan
acetabular cup
knurled teeth
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP01956733A
Other languages
German (de)
English (en)
Inventor
Rudolf Koch
Maurizio Tollari
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Biomet Merck GmbH
Original Assignee
Biomet Merck GmbH
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 Biomet Merck GmbH filed Critical Biomet Merck GmbH
Publication of EP1420724A1 publication Critical patent/EP1420724A1/fr
Withdrawn legal-status Critical Current

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
    • A61F2/32—Joints for the hip
    • A61F2/34—Acetabular cups
    • 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
    • A61F2002/30171—Concave polygonal shapes rosette- or star-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
    • A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
    • A61F2002/30362—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit with possibility of relative movement between the protrusion and the recess
    • A61F2002/30364—Rotation about the common longitudinal axis
    • A61F2002/30367—Rotation about the common longitudinal axis with additional means for preventing said rotation
    • 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
    • A61F2002/30476—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism
    • A61F2002/30485—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism plastically deformable
    • 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
    • A61F2002/30476—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism
    • A61F2002/305—Snap connection
    • 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
    • A61F2002/30537—Special structural features of bone or joint prostheses not otherwise provided for adjustable
    • A61F2002/30538—Special structural features of bone or joint prostheses not otherwise provided for adjustable for adjusting angular orientation
    • A61F2002/3054—Special structural features of bone or joint prostheses not otherwise provided for adjustable for adjusting angular orientation about a connection axis or implantation axis for selecting any one of a plurality of radial orientations between two modular parts, e.g. Morse taper connections, at discrete positions, angular positions or continuous positions
    • 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
    • A61F2230/0028—Shapes in the form of latin or greek characters
    • A61F2230/005—Rosette-shaped, e.g. star-shaped

Definitions

  • the invention relates to an artificial hip joint socket made of at least two parts which can be connected to one another.
  • Conventional hip joint pans consist of a socket anchored in the pelvic bone and an insert which, when assembled, interacts with the condyle of the femoral prosthesis. Often, the insert takes on another deposit, one of the two parts forms the immediate hard bearing for the head of the femoral prosthesis and the other part is usually a rather elastic link between the hard inner shell and the mostly hard pan.
  • connection between the pan and use z.
  • Example by encapsulation of the insert with the material of the pan see, for example: EP-A2-726066 and EP-B1-544214
  • snap-connecting the insert with the pan see, for example: EP-A1-242633
  • screwing the insert made with the pan or the like See, for example: EP-A1-242633.
  • Abrasion particles may be affected by tissue effects, e.g. cause a loosening of the prosthetic seat.
  • d) grooves are formed in the edge region of the pan, which cooperate with opposing ribs of the insert.
  • the invention is therefore based on the object to find a new rotary locking system which avoids the mentioned disadvantages, is easy to manufacture and has a sufficient rotational security.
  • This object is achieved by attaching a knurl of at least two teeth on the inside of the pan or on the outside of the insert.
  • This knurling is formed in particular on the harder of the two parts, so that the knurled teeth dig during assembly in the surface of each other softer part.
  • the extent of the knurling teeth is preferably approximately axially with respect to the insertion direction, so that the knurling can be produced by axial poking with a bumping tool.
  • the height of the knurling teeth above the bottom of the inner diameter of the pan is about twice to three times the clearance between the pan and the insert.
  • a plurality of groups of knurled teeth are distributed over the circumference of the outside of the insert or over the circumference of the inside of the pan.
  • the knurling can also be formed continuously over the entire circumference.
  • the knurling is preferably formed on an annular projection, which is optionally interrupted in the areas without knurling.
  • the knurling can also be subdivided by transverse ribs, which, in addition to the rotational security, also enable a catch in the axial direction.
  • the height of the knurling teeth is limited to a certain extent, so that penetration of the teeth into the surface structure of the respective softer part is made possible without causing a shearing material removal or unnecessarily increasing the required driving force of the insert. This effect is further promoted by the faces of the knurled teeth are flattened or rounded.
  • knurling teeth per knurling group With regard to the number of knurling teeth per knurling group, the skilled person is aware of the teaching of the present application and depending on the choice of materials, as already mentioned, between at least two over at least five, at least ten, at least twenty or at least forty teeth.
  • the shape of the teeth or the valleys between the teeth can be selected within the scope of the invention, wherein a tooth shape which is approximately triangular in cross section is preferred.
  • Figure 1 shows a schematic section through a novel pan with knurled teeth
  • FIG. 2 shows an enlarged detail of a variant according to FIG. 1;
  • FIG. 3 is a bottom view of FIG. 1;
  • Figure 4 is a bottom view of a variant of Figure 3;
  • Figure 5 is a schematic section through a system with pan, insert and insert.
  • FIG. 6 shows a schematic section of a variant with knurled teeth
  • Figure 1 shows schematically the section through a novel pan 1a with groups of Rändelzähnen 2a and 2b.
  • three groups of knurled teeth are provided, as can be seen in the view from below on FIG. 1 according to FIG.
  • FIG. 3 shows the ladle 1a and the three groups of knurled teeth 2a, 2b and 2c.
  • FIG. 4 shows the knurling teeth 2f are arranged over the entire circumference of the pan 1d.
  • FIG. 2 shows an enlarged detail of a variant embodiment according to FIG. 1, in which the knurled teeth 2 b are formed on a web 9, which is delimited laterally by two recesses 6, 7.
  • the recess 7 is formed as Schnappnute, which causes the axial securing of the insert in the pan 1 b.
  • FIG. 5 shows a section through a system with cup 1c, groups of knurled teeth 2d, 2e, insert 3 and insert 4.
  • the insert 4 holds in the insert 3, for example according to the patent application of the applicant WO-A 1-01 / 32108.
  • a square 5 improves the durability, as the aforementioned WO-A1 can be removed.
  • FIG. 6 shows a variant in which querns 8a, 8b are arranged on the socket 1e to the knurling teeth 2g on the socket 1e. These transverse grooves cause a slight penetration of the relatively soft material of the insert in these grooves, so that in this structure also results in an axial movement assurance.

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (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 concerne un acétabulum artificiel qui est constitué d'une pièce creuse (1c) qui est ancrée dans l'os du bassin et d'un insert (3) qui, à l'état monté, coopère avec la tête d'articulation de la prothèse fémorale. La liaison entre ladite partie creuse (1c) et l'insert (3) comporte une sécurité anti-torsion d'un nouveau type qui est formée par au moins deux dents moletées (2d, 2e).situées sur la face intérieure de la partie creuse (1c) ou sur la face extérieure de l'insert (3).
EP01956733A 2001-08-20 2001-08-20 Acetabulum artificiel Withdrawn EP1420724A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2001/001507 WO2003020180A1 (fr) 2001-08-20 2001-08-20 Acetabulum artificiel

Publications (1)

Publication Number Publication Date
EP1420724A1 true EP1420724A1 (fr) 2004-05-26

Family

ID=11004152

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01956733A Withdrawn EP1420724A1 (fr) 2001-08-20 2001-08-20 Acetabulum artificiel

Country Status (2)

Country Link
EP (1) EP1420724A1 (fr)
WO (1) WO2003020180A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUD20070088A1 (it) 2007-05-25 2008-11-26 Lima Lto S P A Inserto per una coppa acetabolare
WO2017089332A1 (fr) * 2015-11-23 2017-06-01 Jossi Holding Ag Implant de cavité cotyloïde

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH669903A5 (fr) 1986-04-15 1989-04-28 Sulzer Ag
US5092897A (en) 1990-03-15 1992-03-03 Forte Mark R Implantable acetabular prosthetic hip joint with universal adjustability
EP0544214A1 (fr) 1991-11-27 1993-06-02 Sanden Corporation Dispositif d'accumulation pour usage dans un circuit de frigorigène
ES2098016T3 (es) 1992-01-31 1997-04-16 Sulzer Orthopadie Ag Procedimiento para la fabricacion de un casquillo de articulacion implantable.
DE4435698A1 (de) * 1994-10-06 1996-04-11 Mtm Medizin Technik Mauk Endoprothese
FR2733409B1 (fr) 1995-04-27 1997-10-24 Howmedica France Cotyle pour prothese de hanche
EP0803234B1 (fr) 1996-04-23 2004-11-17 Biomet Limited Méthodes pour fabriquer coques acétabulaires
DK0934039T3 (da) * 1996-10-23 2004-07-12 Smith & Nephew Inc Hofteledskålsprotese
DE19701778C2 (de) 1996-11-21 1999-03-11 Plus Endoprothetik Ag Gelenkpfanne für eine Hüftgelenkendoprothese
US6152961A (en) 1997-12-29 2000-11-28 Depuy Orthopaedics, Inc. Acetabular prosthesis assembly
US6162256A (en) * 1997-12-29 2000-12-19 Depuy Orthopaedics, Inc. Acetabular prosthesis

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03020180A1 *

Also Published As

Publication number Publication date
WO2003020180A1 (fr) 2003-03-13
WO2003020180A8 (fr) 2003-12-31

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