FR2776182A1 - Cotyloid implant fitting assembly - Google Patents

Cotyloid implant fitting assembly Download PDF

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Publication number
FR2776182A1
FR2776182A1 FR9803706A FR9803706A FR2776182A1 FR 2776182 A1 FR2776182 A1 FR 2776182A1 FR 9803706 A FR9803706 A FR 9803706A FR 9803706 A FR9803706 A FR 9803706A FR 2776182 A1 FR2776182 A1 FR 2776182A1
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France
Prior art keywords
cup
implant
dynamometer
bone
ribs
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Granted
Application number
FR9803706A
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French (fr)
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FR2776182B1 (en
Inventor
Francois Carotenuto
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Groupe Lepine SAS
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Groupe Lepine SAS
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Priority to FR9803706A priority Critical patent/FR2776182B1/en
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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
    • A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4657—Measuring instruments used for implanting artificial joints
    • 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
    • A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
    • A61F2/4609—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of 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
    • A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/468—Testing instruments for artificial joints
    • 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
    • A61F2/4684—Trial or dummy prostheses
    • 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
    • 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
    • A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • 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
    • A61F2002/30682—Means for preventing migration of particles released by the joint, e.g. wear debris or cement particles
    • 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
    • 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
    • A61F2002/30891—Plurality of protrusions
    • A61F2002/30892—Plurality of protrusions 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
    • A61F2/32—Joints for the hip
    • A61F2/34—Acetabular cups
    • A61F2002/3401—Acetabular cups with radial apertures, e.g. radial bores for receiving fixation screws
    • A61F2002/3403—Polar aperture
    • 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
    • A61F2002/3412—Acetabular cups with pins or protrusions, e.g. non-sharp pins or protrusions projecting from a shell surface
    • 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
    • A61F2002/3412—Acetabular cups with pins or protrusions, e.g. non-sharp pins or protrusions projecting from a shell surface
    • A61F2002/3417—Acetabular cups with pins or protrusions, e.g. non-sharp pins or protrusions projecting from a shell surface the outer shell having protrusions on meridian lines, e.g. equidistant fins or wings around the equatorial zone
    • 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
    • A61F2/4657—Measuring instruments used for implanting artificial joints
    • A61F2002/4666—Measuring instruments used for implanting artificial joints for measuring force, pressure or mechanical tension
    • 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
    • A61F2002/4681—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor by applying mechanical shocks, e.g. by hammering
    • A—HUMAN NECESSITIES
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    • A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00389—The prosthesis being coated or covered with a particular material
    • A61F2310/00592—Coating or prosthesis-covering structure made of ceramics or of ceramic-like compounds
    • A61F2310/00796—Coating or prosthesis-covering structure made of a phosphorus-containing compound, e.g. hydroxy(l)apatite

Abstract

The fitting assembly consists of the implant (2) itself, comprising a cup (5) with an unbroken outer surface, with spikes (10) and/or ribs (11) and a porous coating to encourage penetration by bone cells. A trial cup (3) has spikes and/or ribs of the same or slightly smaller dimensions than the implant and fits to an impaction tool with a dynamometer (4). The dynamometer has a handle (15) with a semi rigid rod (16), and a stylus (17) for monitoring the effort applied.

Description

La présente invention concerne un ensemble d'éléments pour la mise enThe present invention relates to a set of elements for setting

place d'un implant cotyloïdien, et un implant cotyloïdien faisant partie de cet ensemble. Un implant cotyloidien comprend classiquement une cupule de forme hémisphérique, délimitant une cavité intérieure, et un insert pouvant être engagé dans cette cavité. La cupule est destinée à être placée dans la cavité cotyloïdienne du bassin et à être fixée à ce dernier, et l'insert délimite une cavité sphérique destinée à recevoir, avec possibilité d'articulation, la  instead of an acetabular implant, and an acetabular implant being part of this set. A cotyloid implant conventionally comprises a cup of hemispherical shape, delimiting an interior cavity, and an insert that can be engaged in this cavity. The cup is intended to be placed in the acetabular cavity of the pelvis and to be fixed to the latter, and the insert delimits a spherical cavity intended to receive, with the possibility of articulation, the

tête sphérique correspondante d'une tige fémorale.  corresponding spherical head of a femoral stem.

L'insert est généralement en matériau favorisant le glissement de la tête fémorale, notamment en polyéthylène. Certains implants sont fixés sans ciment grâce à des moyens d'ancrage à l'os et à un revêtement poreux. Ces moyens d'ancrage permettent une fixation "primaire" de la cupule, le temps que la croissance des cellules osseuses s'opère, et le revêtement est destiné à être envahi par les cellules osseuses lors de leur croissance, pour  The insert is generally made of a material which favors the sliding of the femoral head, in particular polyethylene. Some implants are fixed without cement by means of anchoring to the bone and a porous coating. These anchoring means allow a "primary" fixation of the cup, the time that the bone cells grow, and the coating is intended to be invaded by the bone cells during their growth, to

assurer l'ancrage "secondaire".ensure "secondary" anchoring.

Les moyens d'ancrage sont fréquemment constitués par des vis insérées dans l'os du bassin à travers la paroi de la cupule. De tels implants ont pour inconvénient de permettre une diffusion des particules de polyéthylène, qui résultent de l'usure de l'insert, au travers des trous de passage des vis. Cette diffusion n'est pas souhaitable d'une manière générale et a en particulier pour effet de provoquer une ostéolyse de l'acétabule autour des vis, amoindrissant la surface d'appui de l'implant et la tenue  The anchoring means are frequently constituted by screws inserted into the bone of the pelvis through the wall of the cup. The disadvantage of such implants is that they allow diffusion of the polyethylene particles, which result from the wear of the insert, through the screw through holes. This diffusion is generally undesirable and in particular has the effect of causing osteolysis of the acetabulum around the screws, reducing the bearing surface of the implant and the holding.

des vis.screws.

Il est connu de réaliser un tel implant avec une cupule à paroi continue, c'est-à-dire dépourvue de trous ou de fentes susceptibles de favoriser la diffusion précitée des particules. Pour sa fixation primaire, une telle cupule peut comprendre un pas de vis périphérique, ou un diamètre externe supérieur à celui de la cavité cotyloïdienne et une fente méridienne permettant une élasticité radiale de la cupule (implants dits "press fit"), ou des ergots, saillies ou aspérités diverses, destinés à être insérés dans l'os par impaction. Les implants de ce type sont réservés aux patients dont l'os est apte à permettre un ancrage primaire suffisamment résistant, un tel ancrage étant prépondérant pour la bonne réalisation de l'ancrage secondaire. La10 qualité de l'os est en effet très variable d'un patient à l'autre, notamment en fonction de l'âge de ce patient. Des implants classiques sont prescrits dans les cas douteux, malgré les inconvénients précités de ces implants, alors que la mise en place d'un implant à paroi continue aurait  It is known to produce such an implant with a cup with a continuous wall, that is to say one devoid of holes or slots capable of promoting the aforementioned diffusion of the particles. For its primary fixation, such a cup may include a peripheral screw pitch, or an external diameter greater than that of the acetabular cavity and a meridian slot allowing a radial elasticity of the cup (so-called "press fit" implants), or lugs , various protrusions or asperities, intended to be inserted into the bone by impaction. Implants of this type are reserved for patients whose bone is capable of allowing a sufficiently strong primary anchoring, such anchoring being preponderant for the good achievement of the secondary anchoring. The quality of the bone is indeed very variable from one patient to another, in particular according to the age of this patient. Conventional implants are prescribed in doubtful cases, despite the aforementioned drawbacks of these implants, whereas the placement of a continuous wall implant would have

pu être envisagée.could be considered.

La présente invention vise à remédier à cet  The present invention aims to remedy this

inconvénient pratique essentiel.essential practical disadvantage.

A cet effet, l'ensemble d'éléments qu'elle concerne comprend: - un implant constitué par une cupule destinée à être placée dans la cavité cotyloïdienne du bassin et par un insert en matériau favorisant le glissement; la cupule présente (i) une paroi continue, c'est-à-dire est dépourvue de trous ou de fentes, (ii) des pointes et/ou des nervures aménagées sur sa face extérieure, destinées à être insérées dans l'os par impaction pour assurer un ancrage provisoire de l'implant, et (iii) un revêtement poreux sur cette face extérieure, destiné à être envahi par les cellules osseuses lors de leur croissance, pour assurer l'ancrage définitif de l'implant; la cupule comprend en outre des moyens pour son montage sur un instrument d'impaction dans la cavité cotyloïdienne du patient; - une cupule d'essai comprenant des pointes et/ou nervures identiques à celles de la cupule de l'implant, ou légèrement moins hautes et/ou moins épaisses que celles-ci, cette cupule d'essai comprenant en outre des moyens pour son montage sur un instrument d'impaction dans la cavité cotyloïdienne du patient, et - un dynamomètre comprenant des moyens de montage complémentaires de ceux de la cupule d'essai, ce dynamomètre permettant d'exercer sur cette cupule d'essai, après impaction de celle-ci dans la cavité cotyloïdienne, des forces orientées dans au moins un plan sensiblement perpendiculaire au plan de l'ouverture de cette cupule, tendant au basculement de cette cupule dans la cavité  To this end, the set of elements which it concerns includes: - an implant constituted by a cup intended to be placed in the acetabular cavity of the pelvis and by an insert made of material promoting sliding; the cup has (i) a continuous wall, that is to say is devoid of holes or slots, (ii) spikes and / or ribs arranged on its outer face, intended to be inserted into the bone by impaction to ensure a temporary anchoring of the implant, and (iii) a porous coating on this external face, intended to be invaded by bone cells during their growth, to ensure the final anchoring of the implant; the cup further comprises means for mounting it on an impaction instrument in the acetabular cavity of the patient; a test cup comprising points and / or ribs identical to those of the implant cup, or slightly less high and / or less thick than the latter, this test cup further comprising means for its mounting on an impaction instrument in the acetabular cavity of the patient, and - a dynamometer comprising mounting means complementary to those of the test cup, this dynamometer making it possible to exercise on this test cup, after impaction of that -this in the acetabular cavity, forces oriented in at least one plane substantially perpendicular to the plane of the opening of this cup, tending to tilt this cup in the cavity

cotyloïdienne, et de mesurer ces forces.  acetabulum, and measure these forces.

La cupule d'essai est impactée dans la cavité cotyloïdienne à appareiller, puis le dynamomètre est utilisé pour mesurer la résistance de l'ancrage de la cupule. La mesure des forces exercées permet au praticien d'évaluer la qualité de l'os du patient et par conséquent de déterminer l'aptitude de cet os à recevoir ou non  The test cup is impacted in the acetabular cavity to be fitted, then the dynamometer is used to measure the resistance of the anchorage of the cup. The measurement of the forces exerted allows the practitioner to evaluate the quality of the patient's bone and therefore to determine the aptitude of this bone to receive or not

l'implant cotyloïdien correspondant.  the corresponding acetabular implant.

Si l'os s'avère apte à recevoir l'implant, la cupule d'essai est retirée par traction axiale, et l'implant est sorti de son emballage stérile puis est mis  If the bone proves capable of receiving the implant, the test cup is removed by axial traction, and the implant is removed from its sterile packaging and then put

en place.in place.

En cas d'inaptitude de l'os à recevoir l'implant, un implant classique, comprenant par exemple des vis  In case of inability of the bone to receive the implant, a conventional implant, comprising for example screws

d'ancrage, est alors mis en place.anchor, is then put in place.

Avantageusement, le dynamomètre est conformé pour pouvoir servir lui- même d'outil d'impaction de la cupule  Advantageously, the dynamometer is shaped to be able to serve itself as a tool for impacting the cup.

d'essai et, le cas échéant, de la cupule de l'implant.  of the implant cup.

De préférence, le dynamomètre comprend une tête pourvue desdits moyens de montage, montée pivotante sur lui. Cette tête permet d'orienter le dynamomètre sur 360 par rapport à la cupule d'essai, pour tester la  Preferably, the dynamometer comprises a head provided with said mounting means, pivotally mounted on it. This head makes it possible to orient the dynamometer on 360 relative to the test cup, to test the

résistance de l'ancrage dans plusieurs directions.  strength of the anchor in several directions.

Selon une forme de réalisation préférée de l'invention, le dynamomètre comprend un manche, une tige semi-rigide solidaire de ce manche par une extrémité et un stylet parallèle à cette tige; le stylet est relié à la tige à proximité de l'extrémité libre de cette tige et s'étend le long de celle-ci, en direction du manche, ce stylet restant rectiligne lors de l'exercice d'une force sur la cupule d'essai et indiquant ainsi l'ampleur de la déformation de la tige, donc l'intensité de la force exercée. Avantageusement, le dynamomètre comprend une plaquette transversale comportant des graduations, située à proximité de l'extrémité libre du stylet, ces graduations indiquant la qualité d'os, par exemple os  According to a preferred embodiment of the invention, the dynamometer comprises a handle, a semi-rigid rod secured to this handle by one end and a stylus parallel to this rod; the stylus is connected to the rod close to the free end of this rod and extends along the latter, in the direction of the handle, this stylus remaining rectilinear when a force is exerted on the cup d 'test and thus indicating the extent of the deformation of the rod, therefore the intensity of the force exerted. Advantageously, the dynamometer comprises a transverse plate having graduations, located near the free end of the stylus, these graduations indicating the quality of bone, for example bone

"mou", "standard" ou "dur"."soft", "standard" or "hard".

L'invention concerne également un implant cotyloïdien à paroi continue, du type précité, susceptible d'être utilisé dans l'ensemble d'éléments décrit plus haut. La cupule de cet implant comprend: - au moins trois pointes acérées régulièrement réparties sur sa circonférence, aménagées sensiblement à mi-hauteur de sa paroi et faisant saillie sensiblement parallèlement à son axe, et - au moins six nervures acérées régulièrement réparties sur sa circonférence, ces nervures étant aménagées dans la zone équatoriale de la cupule et faisant  The invention also relates to a cotyloid implant with a continuous wall, of the aforementioned type, capable of being used in the set of elements described above. The cup of this implant comprises: - at least three sharp points regularly distributed around its circumference, arranged substantially at mid-height of its wall and projecting substantially parallel to its axis, and - at least six sharp ribs regularly distributed over its circumference, these ribs being arranged in the equatorial zone of the cup and making

saillie radialement vers l'extérieur.  protruding radially outwards.

Les pointes permettent un ancrage résistant au basculement tandis que les nervures permettent un ancrage résistant au pivotement. Les deux ancrages se combinent pour assurer la parfaite immobilisation de la cupule par  The spikes allow an anchoring resistant to tilting while the ribs allow an anchoring resistant to pivoting. The two anchors combine to ensure perfect immobilization of the cup by

rapport au bassin.relation to the basin.

Pour sa bonne compréhension, l'invention est à nouveau décrite ci- dessous en référence au dessin schématique annexé représentant, à titre d'exemple non limitatif, une forme de réalisation préférée de l'ensemble  For a good understanding, the invention is again described below with reference to the appended diagrammatic drawing representing, by way of nonlimiting example, a preferred embodiment of the assembly

d'éléments et de l'implant cotyloïdien qu'elle concerne.  of elements and of the acetabular implant it concerns.

La figure 1 est une vue de côté des éléments composant ledit ensemble; la figure 2 est une vue en perspective de l'implant cotyloïdien que comprend cet ensemble, et la figure 3 est une vue en perspective d'une cupule d'essai que comprend ledit ensemble, selon une variante de réalisation. La figure 1 représente un ensemble 1 d'éléments pour la mise en place d'un implant cotyloïdien, qui  Figure 1 is a side view of the elements of said assembly; Figure 2 is a perspective view of the acetabular implant that includes this assembly, and Figure 3 is a perspective view of a test cup that includes said assembly, according to an alternative embodiment. Figure 1 shows a set 1 of elements for the establishment of an acetabular implant, which

comprend l'implant cotyloïdien 2 lui-même, une cupule d'essai 3 et un dynamomètre 4.  includes the acetabular implant 2 itself, a test cup 3 and a dynamometer 4.

L'implant 2 est constitué par une cupule 5 destinée à être placée dans la cavité cotyloïdienne du  The implant 2 is constituted by a cup 5 intended to be placed in the acetabular cavity of the

bassin et par un insert (non représenté) en un matériau15 favorisant le glissement, notamment en polyéthylène.  pelvis and by an insert (not shown) made of a material15 promoting sliding, in particular polyethylene.

La cupule 5 présente une forme hémisphérique et, ainsi que cela apparaît à la figure 2, délimite une cavité intérieure 6 pour recevoir l'insert. Elle a une paroi continue, c'est-à-dire qu'elle est dépourvue de trous ou  The cup 5 has a hemispherical shape and, as it appears in FIG. 2, delimits an interior cavity 6 to receive the insert. It has a continuous wall, i.e. it has no holes or

de fentes traversant cette paroi.slots crossing this wall.

Sur sa face extérieure, elle comprend quatre pointes 10 et huit nervures 11.  On its outer face, it comprises four points 10 and eight ribs 11.

Les pointes 10 sont acérées et sont régulièrement réparties sur la circonférence de la cupule 5. Elles sont aménagées sensiblement à mihauteur de la paroi de cette dernière et font saillie sensiblement parallèlement à  The points 10 are sharp and are regularly distributed over the circumference of the cup 5. They are arranged substantially at the middle of the wall of the latter and protrude substantially parallel to

l'axe de celle-ci.the axis of it.

Les nervures 11 sont également acérées et régulièrement réparties sur la circonférence de la cupule 5. Elles sont aménagées dans la zone équatoriale de cette  The ribs 11 are also sharp and regularly distributed over the circumference of the cup 5. They are arranged in the equatorial zone of this

dernière et font saillie radialement vers l'extérieur.  last and protrude radially outward.

La face extérieure de la cupule 5 comprend également un revêtement poreux susceptible d'être envahi par les cellules osseuses lors de leur croissance, ce  The outer face of the cup 5 also includes a porous coating capable of being invaded by bone cells during their growth, this

revêtement étant notamment en hydroxyapatite de calcium.  coating being in particular of calcium hydroxyapatite.

En outre, la cupule 5 comprend un alésage taraudé aménagé au niveau de son pôle, du côté de sa face intérieure. L'insert, quant à lui, délimite classiquement une cavité sphérique destinée à recevoir, avec possibilité d'articulation, la tête sphérique correspondante d'une tige fémorale. La cupule d'essai 3 présente des dimensions identiques à celle de la cupule 5 et comprend des pointes  In addition, the cup 5 includes a threaded bore arranged at its pole, on the side of its inner face. The insert, meanwhile, conventionally delimits a spherical cavity intended to receive, with the possibility of articulation, the corresponding spherical head of a femoral stem. The test cup 3 has dimensions identical to that of the cup 5 and includes points

10 et des nervures 11 identiques à celles de cette dernière.  10 and ribs 11 identical to those of the latter.

Cette cupule 3 comprend en outre un alésage taraudé aménagé au niveau de son pôle, du côté de sa face intérieure. Le dynamomètre 4 comprend un manche 15, une tige semi-rigide 16 solidaire de ce manche par une extrémité et  This cup 3 further comprises a threaded bore arranged at its pole, on the side of its inner face. The dynamometer 4 comprises a handle 15, a semi-rigid rod 16 secured to this handle by one end and

un stylet 17 parallèle à cette tige 16.  a stylus 17 parallel to this rod 16.

L'extrémité libre de la tige 16 est solidaire d'un embout 20 sur lequel peut être montée, avec possibilité de pivotement autour de l'axe de la tige 16, une tête d'impaction 21. Cette tête 21 est pourvue d'un plot fileté 22 qui peut être engagé dans l'un ou l'autre des trous taraudés des cupules 3 ou 5. Pour son montage pivotant sur l'embout 20, la tête 21 comprend une cavité 23 dans laquelle peut être engagé un plot 24 correspondant que  The free end of the rod 16 is integral with a nozzle 20 on which can be mounted, with the possibility of pivoting around the axis of the rod 16, an impaction head 21. This head 21 is provided with a threaded stud 22 which can be engaged in one or other of the tapped holes of the cups 3 or 5. For its pivoting mounting on the end piece 20, the head 21 comprises a cavity 23 in which a corresponding stud 24 can be engaged than

comprend l'embout 20.includes tip 20.

Le stylet 17 est relié à l'embout 20 à proximité de l'extrémité libre de la tige 16 et s'étend le long de  The stylus 17 is connected to the end piece 20 near the free end of the rod 16 and extends along

cette dernière, en direction du manche 15.  the latter, towards the handle 15.

Le dynamomètre 4 comprend également une plaquette transversale 25 située à proximité de l'extrémité libre du stylet 17, fixée par des vis 26. Cette plaquette comporte deux séries de trois graduations situées de part et d'autre de cette extrémité, à savoir, depuis l'axe de la tige 16 et en direction de l'extérieur, "mou", "std"  The dynamometer 4 also comprises a transverse plate 25 located near the free end of the stylus 17, fixed by screws 26. This plate has two series of three graduations located on either side of this end, namely, from the axis of the rod 16 and towards the outside, "soft", "std"

signifiant "standard" et "dur".meaning "standard" and "hard".

Le manche 15, la tige 16, l'embout 20 et la tête 21 sont en matériaux résistants, et le dynamomètre 4 est propre à être utilisé pour l'impaction de l'une ou l'autre des cupules 3 ou 5, une enclume 27 étant prévue à cet effet sur l'extrémité du manche 15. En pratique, la cupule d'essai 3 est montée sur le dynamomètre 4 puis est impacté grâce à ce dernier dans la  The handle 15, the rod 16, the end piece 20 and the head 21 are made of resistant materials, and the dynamometer 4 is suitable for being used for the impaction of one or the other of the cups 3 or 5, an anvil 27 being provided for this purpose on the end of the handle 15. In practice, the test cup 3 is mounted on the dynamometer 4 and then is impacted by the latter in the

cavité cotyloïdienne à appareiller.  acetabular cavity to be fitted.

Le dynamomètre 4 permet alors d'exercer sur la cupule 3 des forces sensiblement perpendiculaires au plan de l'ouverture de cette cupule 3, tendant au basculement  The dynamometer 4 then makes it possible to exert on the cup 3 forces substantially perpendicular to the plane of the opening of this cup 3, tending to tilt.

de cette dernière par rapport à la cavité cotyloïdienne.  of the latter relative to the acetabular cavity.

Grâce au montage pivotant de la tête 21 sur l'embout 20, le dynamomètre 4 peut être orienté sur 360 par rapport à la cupule 3, pour tester la résistance de l'ancrage de la  Thanks to the pivoting mounting of the head 21 on the end piece 20, the dynamometer 4 can be oriented over 360 relative to the cup 3, to test the resistance of the anchoring of the

cupule 3 dans de nombreuses directions.  cup 3 in many directions.

La mesure des forces exercées permet au praticien d'évaluer la qualité de l'os du patient et par conséquent de déterminer l'aptitude de cet os à recevoir ou non  The measurement of the forces exerted allows the practitioner to evaluate the quality of the patient's bone and therefore to determine the aptitude of this bone to receive or not

l'implant cotyloïdien 2 correspondant.  the corresponding acetabular implant 2.

Si l'os s'avère apte à recevoir cet implant 2, la cupule 3 est retirée par traction axiale, et l'implant 2  If the bone proves capable of receiving this implant 2, the cup 3 is removed by axial traction, and the implant 2

est sorti de son emballage stérile puis est mis en place.  is removed from its sterile packaging and is then put in place.

Les pointes 10 permettent un ancrage résistant au basculement tandis que les nervures 11 permettent un ancrage résistant au pivotement, ces deux ancrages se combinant pour assurer la parfaite immobilisation de la cupule 5 par rapport au bassin le temps que la croissance des cellules osseuses s'opère et assure l'ancrage  The points 10 allow an anchoring resistant to tilting while the ribs 11 allow an anchoring resistant to pivoting, these two anchors combining to ensure perfect immobilization of the cup 5 relative to the pelvis while the bone cells are growing. and ensures anchoring

définitif, par envahissement du revêtement.  permanent, by invasion of the coating.

En cas d'inaptitude de l'os à recevoir l'implant, un implant classique, comprenant par exemple des vis  In case of inability of the bone to receive the implant, a conventional implant, comprising for example screws

d'ancrage, est alors mis en place.anchor, is then put in place.

Il va de soi que l'invention n'est pas limitée à la forme de réalisation décrite ci-dessus à titre d'exemple mais qu'elle en embrasse, au contraire, toutes les variantes de réalisation. Ainsi, dans la variante  It goes without saying that the invention is not limited to the embodiment described above by way of example but that it embraces, on the contrary, all the variant embodiments. So in the variant

montrée à la figure 3, la cupule d'essai 3 comprend des pointes 10a légèrement moins hautes et/ou moins épaisses que celles de la cupule 5, afin d'obtenir un ancrage5 encore plus résistant en ce qui concerne cette dernière.  shown in FIG. 3, the test cup 3 comprises points 10a slightly less high and / or less thick than those of the cup 5, in order to obtain an anchoring 5 which is even more resistant as regards the latter.

Claims (5)

REVENDICATIONS 1 - Ensemble d'éléments pour la mise en place d'un implant cotyloïdien, caractérisé en ce qu'il comprend: - un implant (2) constitué par une cupule (5), destinée à être placée dans la cavité cotyloïdienne du bassin, et par un insert en matériau favorisant le glissement; la cupule (5) présente (i) une paroi continue, c'est-à-dire est dépourvue de trous ou de fentes, (ii) des pointes (10) et/ou des nervures (11)10 aménagées sur sa face extérieure, destinées à être insérées dans l'os par impaction pour assurer un ancrage provisoire de l'implant (2), et (iii) un revêtement poreux sur cette face extérieure, destiné à être envahi par les cellules osseuses lors de leur croissance, pour assurer l'ancrage définitif de l'implant (2); la cupule (5) comprend en outre des moyens pour son montage sur un instrument (4) d'impaction dans la cavité cotyloïdienne du patient; - une cupule d'essai (3) comprenant des pointes (10) et/ou nervures (11) identiques à celles de la cupule (5) de l'implant (2), ou légèrement moins hautes et/ou moins épaisses que celles-ci, cette cupule d'essai (3) comprenant en outre des moyens pour son montage sur un instrument (4) d'impaction dans la cavité cotyloïdienne du patient, et - un dynamomètre (4) comprenant des moyens de montage (22) complémentaires de ceux de la cupule d'essai (3), ce dynamomètre (4) permettant d'exercer sur cette cupule d'essai (3), après impaction de celle-ci dans la cavité cotyloïdienne, des forces orientées dans au moins un plan sensiblement perpendiculaire au plan de l'ouverture de cette cupule (3), tendant au basculement de cette cupule (3) dans la cavité cotyloïdienne, et de  1 - Set of elements for the establishment of an acetabular implant, characterized in that it comprises: - an implant (2) constituted by a cup (5), intended to be placed in the acetabular cavity of the pelvis, and by an insert of material promoting sliding; the cup (5) has (i) a continuous wall, that is to say is devoid of holes or slots, (ii) spikes (10) and / or ribs (11) 10 arranged on its outer face , intended to be inserted into the bone by impaction to ensure a temporary anchoring of the implant (2), and (iii) a porous coating on this outer face, intended to be invaded by bone cells during their growth, for ensure the final anchoring of the implant (2); the cup (5) further comprises means for mounting it on an instrument (4) for impaction in the acetabular cavity of the patient; - a test cup (3) comprising points (10) and / or ribs (11) identical to those of the cup (5) of the implant (2), or slightly less high and / or less thick than those -this, this test cup (3) further comprising means for mounting it on an instrument (4) for impaction in the acetabular cavity of the patient, and - a dynamometer (4) comprising mounting means (22) complementary to those of the test cup (3), this dynamometer (4) making it possible to exert on this test cup (3), after impact of the latter in the acetabular cavity, forces oriented in at least one plane substantially perpendicular to the plane of the opening of this cup (3), tending to tilt this cup (3) in the acetabular cavity, and mesurer ces forces.measure these forces. 2 - Ensemble d'éléments selon la revendication 1, caractérisé en ce que le dynamomètre (4) est conformé pour pouvoir servir lui-même d'outil d'impaction de la cupule d'essai (3) et, le cas échéant, de la cupule (5) de  2 - set of elements according to claim 1, characterized in that the dynamometer (4) is shaped to be able to serve itself as a tool for impacting the test cup (3) and, if necessary, the cup (5) of l'implant (2).the implant (2). 3 - Ensemble d'éléments selon la revendication 1 ou la revendication 2, caractérisé en ce que le dynamomètre (4) comprend une tête (21) pourvue desdits  3 - set of elements according to claim 1 or claim 2, characterized in that the dynamometer (4) comprises a head (21) provided with said moyens de montage, montée pivotante sur lui.  mounting means, pivotally mounted on it. 4 - Ensemble d'éléments selon l'une des  4 - Set of elements according to one of revendications 1 à 3, caractérisé en ce que le dynamomètre  Claims 1 to 3, characterized in that the dynamometer (4) comprend un manche (15), une tige semi-rigide (16) solidaire de ce manche (15) par une extrémité et un stylet (17) parallèle à cette tige (16); le stylet (17) est relié à la tige (16) à proximité de l'extrémité libre de cette tige et s'étend le long de celle-ci, en direction du manche (15), ce stylet (17) restant rectiligne lors de l'exercice d'une force sur la cupule d'essai (3) et indiquant ainsi l'ampleur de la déformation de la tige  (4) comprises a handle (15), a semi-rigid rod (16) integral with this handle (15) by one end and a stylet (17) parallel to this rod (16); the stylus (17) is connected to the rod (16) near the free end of this rod and extends along the latter, in the direction of the handle (15), this stylus (17) remaining rectilinear during of the force exerted on the test cup (3) and thus indicating the extent of the deformation of the rod (16), donc l'intensité de la force exercée.  (16), therefore the intensity of the force exerted. - Ensemble d'éléments selon la revendication 4, caractérisé en ce que le dynamomètre (4) comprend une plaquette transversale (25) comportant des graduations, située à proximité de l'extrémité libre du stylet (17), ces graduations indiquant la qualité d'os, par exemple os  - Set of elements according to claim 4, characterized in that the dynamometer (4) comprises a transverse plate (25) having graduations, located near the free end of the stylus (17), these graduations indicating the quality d 'bone, for example bone "mou", "standard" ou "dur"."soft", "standard" or "hard". 6 - Implant cotyloïdien susceptible d'être utilisé  6 - Cotyloid implant likely to be used dans l'ensemble d'éléments selon l'une des revendications  in the set of elements according to one of claims 1 à 5, caractérisé en ce que sa cupule (5) comprend: - au moins trois pointes (10) acérées régulièrement réparties sur sa circonférence, aménagées sensiblement à mi-hauteur de sa paroi et faisant saillie sensiblement parallèlement à son axe, et - au moins six nervures (11) acérées régulièrement réparties sur sa circonférence, ces nervures (11) étant aménagées dans la zone équatoriale de la cupule (5) et  1 to 5, characterized in that its cup (5) comprises: - at least three sharp points (10) regularly distributed over its circumference, arranged substantially halfway up its wall and projecting substantially parallel to its axis, and - at least six sharp ribs (11) regularly distributed around its circumference, these ribs (11) being arranged in the equatorial zone of the cup (5) and faisant saillie radialement vers l'extérieur.  projecting radially outward.
FR9803706A 1998-03-20 1998-03-20 ASSEMBLY OF ELEMENTS FOR THE PLACEMENT OF A COTYLOIDIAN IMPLANT Expired - Fee Related FR2776182B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008081308A1 (en) * 2006-12-28 2008-07-10 Istituto Ortopedico Galeazzi S.P.A. Surgical instrument for simulating, in the intraoperative phase, the functioning instability of acetabular components of hip prostheses
WO2013022586A1 (en) 2011-08-08 2013-02-14 Hip Innovation Technology Llc Orthpedic instrument, system and method for implanting an acetabular cup

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992018067A1 (en) * 1991-04-16 1992-10-29 Depuy International Limited Acetabular cup
US5320625A (en) * 1993-01-21 1994-06-14 Bertin Kim C Apparatus and method for implanting a prosthetic acetabular cup and then testing the stability of the implant
US5405389A (en) * 1992-02-19 1995-04-11 Joint Medical Products Corporation Sintered coatings for implantable prostheses
US5474560A (en) * 1994-09-26 1995-12-12 Zimmer, Inc. Prosthetic acetabular cup inserter
US5540697A (en) * 1993-02-12 1996-07-30 U.S. Medical Products, Inc. Prosthetic socket installation apparatus and method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992018067A1 (en) * 1991-04-16 1992-10-29 Depuy International Limited Acetabular cup
US5405389A (en) * 1992-02-19 1995-04-11 Joint Medical Products Corporation Sintered coatings for implantable prostheses
US5320625A (en) * 1993-01-21 1994-06-14 Bertin Kim C Apparatus and method for implanting a prosthetic acetabular cup and then testing the stability of the implant
US5540697A (en) * 1993-02-12 1996-07-30 U.S. Medical Products, Inc. Prosthetic socket installation apparatus and method
US5474560A (en) * 1994-09-26 1995-12-12 Zimmer, Inc. Prosthetic acetabular cup inserter

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008081308A1 (en) * 2006-12-28 2008-07-10 Istituto Ortopedico Galeazzi S.P.A. Surgical instrument for simulating, in the intraoperative phase, the functioning instability of acetabular components of hip prostheses
WO2013022586A1 (en) 2011-08-08 2013-02-14 Hip Innovation Technology Llc Orthpedic instrument, system and method for implanting an acetabular cup
CN103841922A (en) * 2011-08-08 2014-06-04 Hip创新科技有限责任公司 Orthpedic instrument, system and method for implanting an acetabular cup
EP2741715A4 (en) * 2011-08-08 2015-03-04 Hip Innovation Technology Llc Orthpedic instrument, system and method for implanting an acetabular cup
US9155632B2 (en) 2011-08-08 2015-10-13 Hip Innovation Technology, LLC Orthopedic instrument, system and method for implanting an acetabular cup

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