GB2397765A - A hip resurfacing device - Google Patents

A hip resurfacing device Download PDF

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Publication number
GB2397765A
GB2397765A GB0301898A GB0301898A GB2397765A GB 2397765 A GB2397765 A GB 2397765A GB 0301898 A GB0301898 A GB 0301898A GB 0301898 A GB0301898 A GB 0301898A GB 2397765 A GB2397765 A GB 2397765A
Authority
GB
United Kingdom
Prior art keywords
cap
articulating surfaces
cup
ceramic material
coated
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.)
Granted
Application number
GB0301898A
Other versions
GB0301898D0 (en
GB2397765B (en
Inventor
Simon Nicholas Collins
Jim Nevelos
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.)
Corin Ltd
Original Assignee
Corin Ltd
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 Corin Ltd filed Critical Corin Ltd
Priority to GB0301898A priority Critical patent/GB2397765B/en
Publication of GB0301898D0 publication Critical patent/GB0301898D0/en
Publication of GB2397765A publication Critical patent/GB2397765A/en
Application granted granted Critical
Publication of GB2397765B publication Critical patent/GB2397765B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • A61F2/32—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
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3601—Femoral heads ; Femoral endoprostheses for replacing only the epiphyseal or metaphyseal parts of the femur, e.g. endoprosthetic femoral heads or necks directly fixed to the natural femur by internal fixation devices
    • A61F2/3603—Femoral heads ; Femoral endoprostheses for replacing only the epiphyseal or metaphyseal parts of the femur, e.g. endoprosthetic femoral heads or necks directly fixed to the natural femur by internal fixation devices implanted without ablation of the whole natural femoral head
    • 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
    • A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
    • A61F2002/3006—Properties of materials and coating materials
    • A61F2002/30107—Properties of materials and coating materials using materials or accessories for preventing galvanic or electrolytic corrosion
    • 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
    • A61F2002/30934—Special articulating surfaces
    • 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
    • A61F2002/4631—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor the prosthesis being specially adapted for being cemented
    • 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
    • A61F2210/00—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2210/0009—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof using materials or accessories for preventing galvanic or electrolytic corrosion
    • 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
    • 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
    • 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
    • A61F2310/00389—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
    • 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
    • A61F2310/00389—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
    • A61F2310/00598—Coating or prosthesis-covering structure made of compounds based on metal oxides or hydroxides
    • A61F2310/00604—Coating made of aluminium oxide or hydroxides

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 hip resurfacing device comprises a femoral cap and an acetabular cup having mutually co-operable articulating surfaces. The cap and the cup are formed of metal and at least one of the articulating surfaces is coated with ceramic material.

Description

1 2397765
A HIP RESURFACING DEVICE
This invention relates to a hip resurfacing device.
Devices for replacing the worn surfaces of hip joints are well known in the art. Such devices as they relate to hip joint surface replacement comprise a metal cap to cover the femoral head, which cap may or may not have been machined to accept the inner surface of the prosthesis, and an acetabular cup which is fitted to the acetabulum either with or without bone cement using techniques also known in the art.
These devices have been made from metal or ceramic material articulating with polyethylene, or metal articulating against metal. However, polyethylene components abrade and polyethylene debris, caused as a result of abrasion through articulation, is a major cause of osteolysis and resultant failure of the device. There is also concern over metal ion release from metal on metal articulating surfaces since the long term effects of this are unknown.
According to the present invention there is provided a hip resurfacing device comprising a femoral cap and an acetabular cup having mutually co operable articulating surfaces, the cap and the cup being formed of metal and at least one of the articulating surfaces being coated with ceramic material.
Preferred and/or optional features of the invention are set forth in claims 2 to 6, inclusive.
The ceramic coating significantly reduces the quantity of metal ions released.
One example of a hip resurfacing device according to the invention will now be more particularly described. The hip resurfacing device comprises a femoral cap, which covers the head of a femur, and an acetabular cup, which is fitted to the acetabulum either with or without bone cement using conventional techniques. The acetabular cup could be of the same or similar shape to that disclosed in GB 2333961 A. The cap has an outer, typically hemispherical or substantially hemispherical, articulating surface and the cup has an inner, typically hemispherical or substantially hemispherical, articulating surface which co- operates with the outer articulating surface of the cap.
The cap and the cup are formed of metal, preferably high carbon cobalt chrome-alloy, completely coated with ceramic material, typically alumina, between 5 and 500 micrometres thick, and more preferably between 25 and 250 micrometres thick. Also, preferably, the radial clearance between the articulating surfaces is 25 to 200 micrometres.
The ceramic coating significantly reduces the quantity of metal ions released into the body during use.
Although the cap and the cup are said to be completely coated in ceramic material, it is also envisaged that only the articulating surfaces, or indeed only one of the two articulating surfaces, be so coated.

Claims (5)

1. A hip resurfacing device comprising a femoral cap and an acetabular cup having mutually co-operable articulating surfaces, the cap and the cup being formed of metal and at least one of the articulating surfaces being coated with ceramic material.
2. A device as claimed in claim 1, wherein the articulating surfaces of the cap and the cup are coated with ceramic material.
3. A device as claimed in claim 2, wherein the non-articulating surfaces of the cap and the cup are also coated with ceramic material.
4. A device as claimed in any one of the preceding claims, wherein the coating thickness is between 5 and 500 micrometres.
5. A hip resurfacing device substantially as hereinbefore described.
5. A device as claimed in claim 4, wherein the coating thickness is between and 250 micrometres.
6. A device as claimed in any one of the preceding claims, wherein the radial clearance between the articulating surfaces is 25 to 200 micrometres.
7. A hip resurfacing device substantially as hereinbefore described. G.
Amendments to the claims have been filed as follows A hip resurfacing device comprising a femoral cap and an acetabular cup having mutually cooperable articulating surfaces, the cap and the cup being formed of metal and at least one of the articulating surfaces being coated with ceramic material' the coating thickness being between 25 and 250 micrometers.
2. A device as claimed in claim 1, wherein the articulating surfaces of the cap and the cup are coated with ceramic material.
3. A device as claimed in claim 2, wherein the non-articulating surfaces of the cap and the cup are also coated with ceramic material.
4. A device as claimed in any one of the preceding claims, wherein the radial clearance between the articulating surfaces is 25 to 200 micrometres.
GB0301898A 2003-01-28 2003-01-28 A hip resurfacing device Expired - Fee Related GB2397765B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0301898A GB2397765B (en) 2003-01-28 2003-01-28 A hip resurfacing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0301898A GB2397765B (en) 2003-01-28 2003-01-28 A hip resurfacing device

Publications (3)

Publication Number Publication Date
GB0301898D0 GB0301898D0 (en) 2003-02-26
GB2397765A true GB2397765A (en) 2004-08-04
GB2397765B GB2397765B (en) 2004-12-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
GB0301898A Expired - Fee Related GB2397765B (en) 2003-01-28 2003-01-28 A hip resurfacing device

Country Status (1)

Country Link
GB (1) GB2397765B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1872745A3 (en) * 2006-06-30 2010-10-06 Howmedica Osteonics Corp. Femoral head resurfacing
US8152855B2 (en) 2006-11-03 2012-04-10 Howmedica Osteonics Corp. Method and apparatus for hip femoral resurfacing tooling
US8187660B2 (en) 2006-01-05 2012-05-29 Howmedica Osteonics Corp. Method for fabricating a medical implant component and such component
US9713655B2 (en) 2014-06-13 2017-07-25 Acuitive Technologies, Inc. Joint replacement or joint resurfacing devices, systems and methods

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2126096A (en) * 1934-03-07 1938-08-09 Deguide Hubert Polishing composition
US3894297A (en) * 1973-08-31 1975-07-15 Oscobal Ag Chirurgische Instr Hip joint prosthesis
US4146936A (en) * 1975-12-30 1979-04-03 Sumitomo Chemical Company Limited Implants for bones, joints and tooth roots
GB2333961A (en) * 1998-02-05 1999-08-11 Corin Medical Ltd Acetabular cup
US6069084A (en) * 1993-11-05 2000-05-30 Texas Instruments Incorporated Method of forming a low-k layer in an Integrated circuit
GB2366733A (en) * 2001-04-24 2002-03-20 Corin Ltd A hip prosthesis

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2126096A (en) * 1934-03-07 1938-08-09 Deguide Hubert Polishing composition
US3894297A (en) * 1973-08-31 1975-07-15 Oscobal Ag Chirurgische Instr Hip joint prosthesis
US4146936A (en) * 1975-12-30 1979-04-03 Sumitomo Chemical Company Limited Implants for bones, joints and tooth roots
US6069084A (en) * 1993-11-05 2000-05-30 Texas Instruments Incorporated Method of forming a low-k layer in an Integrated circuit
GB2333961A (en) * 1998-02-05 1999-08-11 Corin Medical Ltd Acetabular cup
GB2366733A (en) * 2001-04-24 2002-03-20 Corin Ltd A hip prosthesis

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8187660B2 (en) 2006-01-05 2012-05-29 Howmedica Osteonics Corp. Method for fabricating a medical implant component and such component
EP1872745A3 (en) * 2006-06-30 2010-10-06 Howmedica Osteonics Corp. Femoral head resurfacing
US8152855B2 (en) 2006-11-03 2012-04-10 Howmedica Osteonics Corp. Method and apparatus for hip femoral resurfacing tooling
US9713655B2 (en) 2014-06-13 2017-07-25 Acuitive Technologies, Inc. Joint replacement or joint resurfacing devices, systems and methods
US10272177B2 (en) 2014-06-13 2019-04-30 Acuitive Technologies, Inc. Joint replacement or joint resurfacing devices, systems and methods

Also Published As

Publication number Publication date
GB0301898D0 (en) 2003-02-26
GB2397765B (en) 2004-12-15

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PCNP Patent ceased through non-payment of renewal fee

Effective date: 20150128