CA2208744A1 - Acetabular plug - Google Patents

Acetabular plug

Info

Publication number
CA2208744A1
CA2208744A1 CA002208744A CA2208744A CA2208744A1 CA 2208744 A1 CA2208744 A1 CA 2208744A1 CA 002208744 A CA002208744 A CA 002208744A CA 2208744 A CA2208744 A CA 2208744A CA 2208744 A1 CA2208744 A1 CA 2208744A1
Authority
CA
Canada
Prior art keywords
plug
cup
bore
patient
side portion
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.)
Abandoned
Application number
CA002208744A
Other languages
French (fr)
Inventor
Carlos E. Collazo
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.)
Howmedica Osteonics Corp
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2208744A1 publication Critical patent/CA2208744A1/en
Abandoned 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
    • A61F2/30721—Accessories
    • A61F2/30744—End caps, e.g. for closing an endoprosthetic cavity
    • 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
    • A61F2002/30199—Three-dimensional shapes
    • A61F2002/30205—Three-dimensional shapes conical
    • A61F2002/30217—Three-dimensional shapes conical hollow cones, e.g. tubular-like cones
    • 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
    • A61F2002/30332—Conically- or frustoconically-shaped protrusion and recess
    • 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
    • A61F2002/30354—Cylindrically-shaped protrusion and recess, e.g. cylinder of circular basis
    • A61F2002/30357—Stepped cylinders, i.e. having discrete diameter changes
    • 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
    • A61F2002/30487—Circumferential cooperating grooves and beads on cooperating lateral surfaces of a mainly longitudinal 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
    • A61F2002/30329—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
    • A61F2002/30667—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
    • A61F2002/30772—Apertures or holes, e.g. of circular cross section
    • A61F2002/3079—Stepped or enlarged apertures, e.g. having discrete diameter changes
    • 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
    • A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4637—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for connecting or disconnecting two parts of a prosthesis
    • A61F2002/4641—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for connecting or disconnecting two parts of a prosthesis for disconnecting
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/0033—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0063—Three-dimensional shapes
    • A61F2230/0067—Three-dimensional shapes conical
    • 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
    • A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00011—Metals or alloys
    • A61F2310/00017—Iron- or Fe-based alloys, e.g. stainless steel
    • 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
    • A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00011—Metals or alloys
    • A61F2310/00023—Titanium or titanium-based alloys, e.g. Ti-Ni alloys
    • 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
    • A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00011—Metals or alloys
    • A61F2310/00029—Cobalt-based alloys, e.g. Co-Cr alloys or Vitallium

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

A plug is provided for use with a specially bored acetabular cup which thoroughly prevents debris (e.g. polymeric debris) from getting through any hole(s) in the cup and which is removable from the cup if desired. The plug is metal and acts with the hole in a compression fit relationship. A method for preventing debris from passing through a hole in an acetabular cup and into a patient's body is also given.

Description

CA 02208744 1997-06-2~
W 096/23457 PCT~B95/01114 ACETABULAR PWG
Ba~ ,uund of the Invention This invention relates generally to implants for use in hip surgery and relates more particularly to an ~cQPh~ implant with specially designed plugs for plugging observation holes in that device or holes used for screw fixation or other pul~,oses.
In Acet~h~ cups for use in hip surgery, a hole or holes are some~ es ,cresel)l so as to enable the orthopadic surgeon to observe the placement of the AcetAh~ ~ cup in the p&lier)l's acetabulum so as to sse whether the cup is properly seated in the acetabulum. If the surgeon has sufficient expertise so as to know whether or not the cup is properly seated without actually seeing the placer..er,l of the cup, such a hole 15 or holes in the ~cet~h~ r Cup may not be necessA-y.
Any such observation holes used in the Ar-ePhu'-- cup for placement of the cup will necessA~ily have to be closed once the cup is finally positioned in the acetabulum in order to prevent debris from l~assi. ,9 through the holes.
It is known to use screws or threaded plugs so as to close such observation 20 hole or holes in order to prevent debris from wear of the polymeric portion of the ~et~h! ~'ar cup from getting through that observation hole and down into the patient's bone.
I Iwlevcr, such threaded plugs have a definite disadv~r,l -ge of exhibiting .,.i: omGlion if not pru~.erly locked or torqued. Thus, debris can penetrate the25 observation hole and come in contact with the patient's bone. Also, threaded plugs require a drive " ,ech&nis. n for i. ,se, liol, into the ~cetAh! ~ cup and are easily and often cross-threaded (i.e., the threads may be il~-properly aligned).
An object of this invention is a plug for use in closing an observation hole in an ~cet~h~ - cup which does not exhibit micromotion and which thoroughly prevents 30 debris from getting through the hole and down into the patient's bone and which can also be removed ~rom the Acet~h!~'~- cup.
Another object of this invention is a method for inserting an Acetzh~ ~'~- cup into a patient, such that the cup is properly seated within the patient's acetabulum and such that polymeric wear debris is prevented from coming into cGnl~ct with the patient's 35 bone.

W O 96123457 PCTnB95/01114 Summary of the Invention According to the invention, a plug which can be used in an A~et~hu'~- implant, which prevents polymeric d~bris from coming into contact with a patient's bone, and which is also removable from the AoePh~ r cup CGII ,pris~s: a hollow, threadlQss piece 5 of metal suLsl~r,lially in the shape of a cup having a side portion, a rim, and a bottom portion, and having a taper over at least a portion of the side portion so that the plug and a special two-part bore (i.e., counterbore) within the acetAh~ cup fit together in an il llel fel ence fit. rle~r~ly~ a lip is pr~senl on the rim of the plug to facilitate removal of the plug, if desired.
Also, according to the invention, a kit for use in orthoper~c hip surgery cor"pri~es such a metal plug (dQscribed above) and an ~cetAh~ cup with a specialtwo-part bore (i.e., counterbore) located therein for placement of that Acet~hu'o~ cup within the patient's body such that the metal plug and the bore fit together in an inl~l fer~l)ce fit, the plug cannot be pushed through the bore and the plug is extractable, if desired, from the bore.
Further, according to the invention, a method for i"selli"g an acetabular cup into a patient such that the cup is properly seated within the palienl's acetabulum and such that polymeric wear debris is prevented from coming into contact with the patient's bone cGmprises: (a) inse, li,.g the Acet~h~ - cup of the kit of the invention (described above) into the ac~tabulum of a patient, using the observation hole to properly seat the Acet~h~ ~lar cup and (2) then i"sel lil ~y the metal plug of the kit of the invention into the observation hole so as to close the observation hole and so as to prevent debris from passing through the observation hole into the bone of the patient.
Brief DescliuLion of the Drawinq In Fig. 1, shown in cross-section is a prefer. ed embodiment of a tapered metallic plug for use with a metallic S~c~hll'-r cup having a two-part bore therewithin (not shown in Fig. 1), the plug being tapered along the entire length of the side portion.
In Fig. 1A, shown in cross-section is an aller"~ e plerel,ed embodiment of a metal plug for use with a metallic AcetAhu'~r cup, the plug being tapered along only a portion of the side portion of the plug.
In Fig. 2 is shown a cross-section of a pr~rt"-ed embodiment of an Acet~h~
cup having a two-part bore located at the bottom of the hemispherical portion of the cup, that bore having a shoulder therewithin and to be used with the plug of Fig. 1.

W O 96/23457 PCT~B95/01114 In Fig. 3 is shown a cross-se~;tional view of the AcetAh~ r cup of Fig. 2, toyetl.er with the plug shown in Fig. 1 prior to the plug's being fully i"se,led into the bore of the ~cet~Ah~ cup.
In Fig. 4 is shown in cros~ s~ction the plug of Fig. 1 after it has been ill5elled 5 into the A~etAh~ ~'ar cup of Fig. 2 and is seated therewithin such that the bottom of the plug CGIIta~t~ the shoulder of the bore.
Detailed Desc,iution of the Drawin~
Rere~ to the drawing, in Fig.1 a pre~.ed embodiment of the ~etAhl ,l~ plug 10 of the invention is shown in cross-section. The plug 10 is made of metl and is rtself 10 sul,sl~,l;ally in the sh_pe of a cup, and has a hollow portion 12, a subst~llially flat bottom portion 14, and a side portion 15 which has a taper 16 on at least a portion thereof. In the p,e~r,~ embodiment shown in Fi~. 1, the side portion 15 has a taper 18 along the entire side thereof.
In Fig. lA, in another p~e~.. d embodiment the taper 18 e~tends only along a 15 portion of side portion 15 (sometimes refe, ~ed to as a ~leader~). The taper 18 is lapered at an angle a (alpha) with re~e~t to a line which is perpendicular (or normal) to the suLsl~ l~ially flat bottom portion 14 of the plug 10.
In Fig. 2, is shown a cros_ sectional view of a pret~r-ed embodiment of an AcetAhl~'~r cup for use with the plug of the invention. The AcetAhl~ -- cup is ,~fer.ed 20 to generally as 24 and has a suL~tar,lially l,er ,ispl~erical shape, has a h~llow~d out portion 26, in which the ball portion (not shown) of a hip implant will be free to rotate within a polyethylene shell (not shown) within the ~cet~h~ cup 24 when the cup 24 is positioned within a patient's acetabulum. The outer surface 28 of the A~et~h~ cup 24 will contact the acetabulum bone of the patient when the AcetAh~'-- cup 24 is25 implanted within the ~,alier,l~ acetabulum. Ridges 29 in the cup 24 are preser,l ~or holding a polyethylene insert (not shown) within the cup 24.
In order to properly seat the ~cetAh~ - cup 24 within the acetabulum of the patient, a bore 30 will ~rere,~bly be drilled through the outer surface 28 of AcetAh!llu cup 24. Preferably, bore 30 will be positioned such that the centerline 32 through bor 30 30 passes through the center 34 of the herni~pl ,er~ which makes up ~cet~hl ~'-- cup 24 Bore 30 has a toP~ height H, 36, which is the sum of two parts, height h1 38 plus height hz 40. Bore 30 is made up of a first bore portion 42 and a second bore portion 44. First bore portion 42 has a diameter 46 and second bore portion has a Wo 96/23457 PCT/IB95/01114 diameter 48, such that diameter 48 of sscond bore portion 44 is larger than diarneter 46 of first bore portion 42. Hence, a shoulder 50 results. This shoulder 50 (also shown in Fig. 4) serves the function of preventing plug 10 from passi"g through bore 30 beyond shoulder S0.
In the practice of the invention, it is required that ~et~h~ r plug 10 have a taper 16 along at least a portion of side portion 15 so that an i"Le,rarence fit betw~en side portion 15 and secol,d bore portion 44 results.
P~ferably, second bore portion 44 and first bore portion 42 will be formed as cylinders with straight sides having no taper for ease of manufacture of the bore (used 10 for visualizing placement of the AcePh~ cup 24).
If desired, side portion 15 of ~cets~h~ plug 10 can be ~pered along only a portion thereof, that is, near the top edge 52 of side portion 15 which lies fal 11 ,e~l from suL slarltially flat bottom portion 14 of plug 10. Top edge 52 can extend inwardly to be a lip 53 (as shown in Fig. 3) for ease in removal of the plug 10 if removal is desired.
In Fig. 3, ~cePhu'~r plug 10 is shown just priorto its being inserted into secGI Id bore portion 44 of bore 30. Corresponding parts are nu")bered col.e~pondingly inFigs. 1, lA, 2, 3, and4.
In Fig. 4, acetabular plug 10 is shown seated within second bore portion 44 of bore 30, such that the pr~,y,ess of plug 10 is stopped by shoulder 50.
The plug 10 of the invention will be made of a biocGi"p~lible malerial, for cx~ ",r 18 cobalt-chror,~-; m-molybdenum, stainless steel, or titanium.
-

Claims (7)

1. An acetabular plug comprising a piece of metal substantially in the shape of a hollow cup with a bottom and a threadless side portion which is at least partially tapered.
2. A plug according to claim 1, wherein said plug has a top edge with an inwardly extending lip.
3. A plug according to claim 1 wherein said cup side portion is tapered along its entire length.
4. A plug according to claim 1, wherein said cup side portion is tapered only along a portion of its length.
5. A kit comprising a metal plug and an acetabular cup prosthesis wherein (a) said acetabular cup prosthesis has a first substantially cylindrical taperless, threadless bore and a second substantially cylindrical taperless, threadless bore therewithin, wherein said first bore and said second bore have unequal diameters and are concentric, such that a shoulder is formed between said first bore and said second bore, and (b) a plug comprising a piece of metal substantially in the shape of a hollow cup with a bottom, a threadless side portion, and a taper on at least a portion of said side portion, wherein said plug and said second bore are shaped relative to each other such that an interference fit results between said metal plug and said second bore and wherein said shoulder prevents said metal plug from moving through said acetabular cup.
6. A kit according to claim 5 wherein said plug has a taper along the entire length of said side portion.
7. A method for inserting an acetabular cup into a patient, such that the cup is properly seated within the patient's acetabulum and such that polymeric wear debris is prevented from coming into contact with the patient's bone, said method comprising:
(a) inserting the acetabular cup of the kit of claim 5 into the acetabulum of a patient, using the observation hole to properly seat the acetabular cup and (2) then inserting the plug of the kit of claim 5 into the observation hole so as to close the observation hole and so as to prevent debris from passing through the observation hole into the bone of the patient.
CA002208744A 1995-01-31 1995-12-11 Acetabular plug Abandoned CA2208744A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US38178895A 1995-01-31 1995-01-31
US08/381,788 1995-01-31

Publications (1)

Publication Number Publication Date
CA2208744A1 true CA2208744A1 (en) 1996-08-08

Family

ID=23506360

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002208744A Abandoned CA2208744A1 (en) 1995-01-31 1995-12-11 Acetabular plug

Country Status (4)

Country Link
EP (1) EP0806919A1 (en)
JP (1) JPH10502853A (en)
CA (1) CA2208744A1 (en)
WO (1) WO1996023457A1 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5549694A (en) * 1994-07-25 1996-08-27 Joint Medical Products Corporation Acetabular prosthesis with apertures sealed with deformable discs and method
US5925077A (en) * 1997-04-02 1999-07-20 Biomet, Inc. Apparatus and method for plugging holes in an acetabular shell component
DE19755246C1 (en) * 1997-12-12 2000-03-30 Aesculap Ag & Co Kg Hip joint prosthesis socket has cup section and cap connected by tongue and groove fastenings
AU783205C (en) 2000-03-15 2006-08-17 Depuy Orthopaedics, Inc. Prosthetic cup assembly which includes components possessing self-locking taper
DE10029637C2 (en) * 2000-06-17 2002-04-11 Biomet Merck Deutschland Gmbh endoprosthesis
US6413259B1 (en) 2000-12-14 2002-07-02 Blackstone Medical, Inc Bone plate assembly including a screw retaining member
DE50114633D1 (en) * 2001-11-07 2009-02-12 Xaver Kuoni METHOD FOR PRODUCING AN ARTIFICIAL JOINT PROSTHESIS WITH LID
US7326253B2 (en) 2001-11-16 2008-02-05 Depuy Products, Inc. Prosthetic cup assembly having increased assembly congruency
US8182518B2 (en) 2003-12-22 2012-05-22 Life Spine, Inc. Static and dynamic cervical plates and cervical plate constructs
JP4517045B2 (en) * 2005-04-01 2010-08-04 独立行政法人産業技術総合研究所 Pitch estimation method and apparatus, and pitch estimation program
US7951151B2 (en) 2006-02-21 2011-05-31 Life Spine, Inc. Structure for joining and retaining multi-part orthopedic implants
DE102007031666A1 (en) * 2006-08-04 2008-02-14 Ceramtec Ag Innovative Ceramic Engineering Asymmetric design of pans and / or cup inserts for manipulation and suppression of natural frequencies
US8348949B2 (en) 2008-08-29 2013-01-08 Life Spine, Inc. Single-sided dynamic spine plates
US8123815B2 (en) 2008-11-24 2012-02-28 Biomet Manufacturing Corp. Multiple bearing acetabular prosthesis
US8308810B2 (en) 2009-07-14 2012-11-13 Biomet Manufacturing Corp. Multiple bearing acetabular prosthesis
US9017412B2 (en) 2011-04-29 2015-04-28 Life Spine, Inc. Spinal interbody implant with bone screw retention
US9889014B2 (en) 2014-02-06 2018-02-13 Life Spine, Inc. Implant for bone fixation
US9877759B2 (en) 2014-02-06 2018-01-30 Life Spine, Inc. Foot implant for bone fixation

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4180873A (en) * 1976-12-06 1980-01-01 Fixel Irving E Implanted acetabular prosthesis
CH670381A5 (en) * 1986-05-05 1989-06-15 Sulzer Ag
US4955325A (en) * 1989-06-14 1990-09-11 Osteonics Corp. Acetabular cup component cement spacer system
ATE91614T1 (en) * 1990-03-01 1993-08-15 Sulzer Ag CEMENTLESS METAL ACETAL CUPS.
US5226917A (en) * 1991-02-14 1993-07-13 Smith & Nephew Richards Inc. Acetabular prosthesis with anchoring pegs
DE59409825D1 (en) * 1994-02-07 2001-09-13 Sulzer Orthopaedie Ag Baar At least two-shell acetabular cup of a hip joint prosthesis and a hip joint prosthesis with such a socket
ATE184179T1 (en) * 1994-02-07 1999-09-15 Sulzer Orthopaedie Ag OUTER SHELL FOR AT LEAST A TWO-PUSHED JOINT SOCKET OF A HIP JOINT PROSTHESIS AND HIP JOINT PROSTHESIS WITH SUCH OUTER SHELL

Also Published As

Publication number Publication date
WO1996023457A1 (en) 1996-08-08
MX9705822A (en) 1997-10-31
EP0806919A1 (en) 1997-11-19
JPH10502853A (en) 1998-03-17

Similar Documents

Publication Publication Date Title
CA2208744A1 (en) Acetabular plug
US6709462B2 (en) Acetabular shell with screw access channels
US8728168B2 (en) Prosthetic implant support structure
US5702473A (en) Cup
US4944759A (en) Porous-coated artificial joints
US4851006A (en) Acetabulum
US5021062A (en) Acetabular cup assembly
US7485148B2 (en) Prosthesis
EP0329854A1 (en) Modular shoulder prothesis
EP0165947B1 (en) Artificial joint cavity
EP0179626A2 (en) Improvements relating to bone implants
US20030163203A1 (en) Acetabular component with removable screw hole plugs
EP3053547A1 (en) Improved hip prosthesis
DE68907668T2 (en) Acetabular part of a hip prosthesis with a support ring flange.
EP2158876A1 (en) Plug for covering screw holes in prostethic implants
CN115887070B (en) Cartilage prosthesis and clamping tool
EP1588677B1 (en) Acetabular prosthesis
EP0296274B1 (en) Metal acetabular cup
EP0677280A1 (en) Acetabular cup prosthesis
EP2066265A2 (en) Hip implant and module for a hip implant
EP0739613A1 (en) Acetabulum cup for a total prosthesis of the hip
DE19640747B4 (en) hip joint
RU66190U1 (en) Swivel component of the endoprosthesis of the hip joint
DE19901710C2 (en) Implantable prosthesis for acetabular replacement
DE202006009843U1 (en) Implant to be used in hip replacement, comprising threaded shaft with head for being used with screw-in tool

Legal Events

Date Code Title Description
EEER Examination request
FZDE Dead