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US3801989A - Artificial limb joints - Google Patents

Artificial limb joints Download PDF

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Publication number
US3801989A
US3801989A US00301846A US30184672A US3801989A US 3801989 A US3801989 A US 3801989A US 00301846 A US00301846 A US 00301846A US 30184672 A US30184672 A US 30184672A US 3801989 A US3801989 A US 3801989A
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bore
ball
limb
tool
flange
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US00301846A
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Kee G Mc
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    • 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 for implanting artificial joints
    • A61F2/4603—Special tools for implanting artificial joints for insertion or extraction of endoprosthetic joints or of accessories thereof
    • A61F2/4607—Special tools for implanting artificial joints for insertion or extraction of endoprosthetic joints or of accessories thereof of hip femoral endoprostheses
    • 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
    • A61F2/46—Special tools for implanting artificial joints
    • A61F2/4637—Special tools for implanting artificial joints for connecting or disconnecting two parts of a prosthesis
    • 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 for implanting artificial joints
    • A61F2/4603—Special tools for implanting artificial joints for insertion or extraction of endoprosthetic joints or of accessories thereof
    • 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
    • A61F2002/30795—Blind bores, e.g. of circular cross-section
    • A61F2002/30797—Blind bores, e.g. of circular cross-section internally-threaded
    • 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
    • A61F2002/3429—Acetabular cups with an integral peripheral collar or flange, e.g. oriented away from the shell centre line
    • 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
    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A61F2002/3611—Heads or epiphyseal parts of femur
    • 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
    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A61F2002/3625—Necks
    • A61F2002/3627—Necks with lateral apertures, holes or openings
    • 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
    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A61F2002/3625—Necks
    • A61F2002/3631—Necks with an integral complete or partial peripheral collar or bearing shoulder at its base
    • 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 for implanting artificial joints
    • A61F2/4603—Special tools for implanting artificial joints for insertion or extraction of endoprosthetic joints or of accessories thereof
    • A61F2002/4619—Special tools for implanting artificial joints for insertion or extraction of endoprosthetic joints or of accessories thereof for extraction
    • 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 for implanting artificial joints
    • A61F2/4603—Special tools for implanting artificial joints for insertion or extraction of endoprosthetic joints or of accessories thereof
    • A61F2002/4622—Special tools for implanting artificial joints for insertion or extraction of endoprosthetic joints or of accessories thereof having the shape of a forceps or a clamp
    • 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 for implanting artificial joints
    • A61F2/4637—Special tools for implanting artificial joints for connecting or disconnecting two parts of a prosthesis
    • A61F2002/4641—Special tools for implanting artificial joints for connecting or disconnecting two parts of a prosthesis for disconnecting

Definitions

  • An artificial hip joint has a cup-like socket portion into which a ball engages.
  • a limb engaging stub depends from said ball and has a waisted portion below the ball and flange beneath the waisted portion.
  • a bore of non-circular cross-section is provided in the waisted portion and an introducer and extractor tool has a limb whose end portion fits into the bore for non-rotatable engagement therein.
  • a tong-like dislocator tool is provided and includes two arms, the end of which engage the bore and flange respectively.
  • This invention concerns artificial limb joints, particularly ball and socket joints such as artificial hip joints in which the limb has an artificial ball head which engages in an artificial socket or cup or in the natural socket.
  • Such artificial joints are known having a femoral limb portion comprising a spigot with an offset ball head which replaces the upper end of the femur, the portion being introduced or extracted from the limb bore by a tool engaging in the end of the shank.
  • the object of this invention is to provide a construction of limb portion in which manipulation thereof during engagement and fitting is simplified and assisted compared with known constructions, particularly with regard to the insertion and location in the femur during an operation.
  • the artificial hip joint comprises a cup like socket portion, and a ball adapted to engage in said socket portion, a limb engaging stub depending from said ball, a waisted portion below said ball, a flange below said waisted portion from which flange said stub depends and a bore through said waisted portion.
  • the invention comprises in combination with a joint as above set forth, an introducer/extractor tool having a limb end portion for non-rotatable engagement in said bore.
  • the invention also includes additionally a cup-like socket portion having a circumferential border flange and in combination a tongs-like dislocator tool, said tool having an end part of one arm to engage in said bore, and an end part of the other arm to engage said flange.
  • FIG. 1 is a side view of one form of limb portion
  • FIG. 2 is a similar fragmentary view of another form, showing the end of the tool engaged
  • FIG. 3 shows a preferred form of tool for use with the limb portion shown in FIG. 1,
  • FIG. 4 illustrates another form of limb'portion
  • FIG. 5 a preferred form of tool for use with the limb portion of FIG. 4,
  • FIG. 6 shows how a dislocator tool can be used to disengage the ball from its cup socket.
  • the limb portion comprises a stub 10 adapted to engage into the upper end of the natural limb after the ball has been removed, this stub being appropriately shaped and curved in conformity with the natural limb.
  • a ball head 11 above the stub is to engage in a complementary cup such as a cup C shown in FIG. 6, or in the natural cup, and a wasited portion 11a is formed at the lower end of the ball 11, below which portion is a flange portion 12.
  • a bore or hole is made into the part below the ball head. As shown in FIG. I the hole 13 extends through the waisted portion and is of hexagonal cross-section.
  • the tool for use with this construction consists of a handled rod 14, with a bent over end, formed hexagonally at 15 to engage in the hole 13. The relative angle of engagement from the six of the hexagon can be selected as desired.
  • the hole 13 need not necessarily be hexagonal but can be of other non-circular cross-section with the tool end appropriately shaped to engage therein without rel ative turning movement.
  • the hole is oval, and the end 15 of the tool correspondingly shaped.
  • the ends (and holes) can if desired, taper slightly to provide a wedge fit.
  • the hole engaging end can be provided with means to hold the said end against accidental withdrawal from the hole on an extraction, one such arrangement being shown diagrammatically in FIG. 2.
  • a pin 16 is pivoted near to the end in a slot the arrangement being such that the pin is coaxial with the end when the tool is engaged to the limb portion, and can then be turned through a right angle to form a T-end.
  • Other arrangements, such as a screw on cap could be provided.
  • a screw-threaded blind bore 17 is made in the waisted portion in a general downward direction, there being a cross-cut 17a at the top.
  • the tool for use with this form (FIG. 5) has a laterally extending lower end 14a with a screw 18 engaging in a threaded bore 19.
  • the screw 18 can be threaded into the bore 17, and the underside of the end 14a is cut away to leave a tongue 14b so that the tongue can engage in the cross-cut 17a, and the screw tightened into the bore 17.
  • the tool can apply downward pressure, upward pull or turning movement to the limb portion.
  • a second laterally projecting limb 20 is provided, this assisting manipulation on insertion.
  • the tool rods can be of various shapes, i.e. have angled cranked or like lower ends with or without a laterally projecting limb to assist manipulation.
  • FIG. 6 the operative end of a tongs like dislocator tool is shown, comprising two arms pivoted together at 21, one arm having an end part 22 to engage in the hole of the limb portion shown in FIG. 1 or 2 and the other arm having an end part 23 to engage the cup C.
  • the cup C as illustrated has a plurality of projections 24, and a circumferential lipped border flange 25, under which the extremity (preferably with a projection as shown) can engage.
  • the arms can be pivoted relatively to open out the end parts 22, 23 so to dislocate the joint.
  • a tongs like tool also could be provided for use with the limb portion of FIG. 4, combined with a cup.
  • An artificial hip joint comprising in combination a cup-like socket portion and a ball engaging in said socket portion, a limb engaging stub depending from said ball, a waisted portion below said ball, said waisted portion having a bore of non-circular cross-section extending therethrough, a flange below said waisted portion from which flange said stub depends, and a tool including a limb end portion non-rotatably engaging in said bore to facilitate manipulation of said hip joint during introduction and extraction thereof.
  • a hip joint as claimed in claim 1, and said tool being an introducer/extractor tool having a limb end portion for non-rotatable engagement in said bore.
  • a tongs-like dislocator tool including a pair of arms, the end of one of said arms engaging in said bore and the end of the other of said arms engaging said flange.

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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Transplantation (AREA)
  • Vascular Medicine (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Cardiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Prostheses (AREA)

Abstract

An artificial hip joint has a cup-like socket portion into which a ball engages. A limb engaging stub depends from said ball and has a waisted portion below the ball and flange beneath the waisted portion. A bore of non-circular cross-section is provided in the waisted portion and an introducer and extractor tool has a limb whose end portion fits into the bore for non-rotatable engagement therein. A tong-like dislocator tool is provided and includes two arms, the end of which engage the bore and flange respectively.

Description

United States Patent [191 McKee Apr. 9, 1974 1 ARTIFICIAL LIMB JOINTS [76] Inventor: George Kenneth McKee, 77,
Newmarket Rd., Norwich, Nor 22D, Norfolk, England 22 Filed: Oct. 30, 1972 21 Appl. No.: 301,846
[52] US. Cl. 3/1, 128/92 CA, 128/83, l28/92 EC [51] Int. Cl. A6lf l/24 [58] Field of Search.... 3/1; 128/92 C, 92 CA, 92 E, 128/92 EC, 92 F, 92 G, 83
{56] References Cited FOREIGN PATENTS OR APPLICATIONS 1,506,594 ll/l967 France [28/92 C OTHER PUBLICATIONS The Journal of Bone & Joint Surgery, January 1952, Advertisement page 4 by Austenal Laboratories, Inc. Moore-Type (self locking) Hip). McKee-Farrar Articulated Hip Prosthesis Advertisement, The Journal of Bone & Joint Surgery, British Vol. SO-B, No. 4, Nov. 1968. Vitallium Surgical Appliances Catalog by Austenal Co., 1964, page 19. Moore Hooked Driver-Extractor No. 6879 relied upon.
The Journal of Bone & Joint Surgery, Vol. XXVI, No. 1, January 1944, page 55.
Primary Examiner-Richard A. Gaudet Assistant Examiner-Ronald L. F rinks Attorney, Agent, or Firm-Emory L. Groff; Emory L. Groff, Jr.
[5 7] ABSTRACT An artificial hip joint has a cup-like socket portion into which a ball engages. A limb engaging stub depends from said ball and has a waisted portion below the ball and flange beneath the waisted portion. A bore of non-circular cross-section is provided in the waisted portion and an introducer and extractor tool has a limb whose end portion fits into the bore for non-rotatable engagement therein. A tong-like dislocator tool is provided and includes two arms, the end of which engage the bore and flange respectively.
4 Claims, 6 Drawing Figures PATENTEU APR 9 I974 SHEET 2 [IF 2 ARTIFICIAL LIMB JOINTS BACKGROUND OF THE INVENTION This invention concerns artificial limb joints, particularly ball and socket joints such as artificial hip joints in which the limb has an artificial ball head which engages in an artificial socket or cup or in the natural socket. Such artificial joints are known having a femoral limb portion comprising a spigot with an offset ball head which replaces the upper end of the femur, the portion being introduced or extracted from the limb bore by a tool engaging in the end of the shank.
The object of this invention is to provide a construction of limb portion in which manipulation thereof during engagement and fitting is simplified and assisted compared with known constructions, particularly with regard to the insertion and location in the femur during an operation.
SUMMARY OF THE INVENTION According to the invention, the artificial hip joint comprises a cup like socket portion, and a ball adapted to engage in said socket portion, a limb engaging stub depending from said ball, a waisted portion below said ball, a flange below said waisted portion from which flange said stub depends and a bore through said waisted portion.
Further the invention comprises in combination with a joint as above set forth, an introducer/extractor tool having a limb end portion for non-rotatable engagement in said bore.
The invention also includes additionally a cup-like socket portion having a circumferential border flange and in combination a tongs-like dislocator tool, said tool having an end part of one arm to engage in said bore, and an end part of the other arm to engage said flange.
BRIEF DESCRIPTION OF THE DRAWINGS Reference will now be made to the accompanying drawings illustrating various preferred embodiments according to the invention and in which:
FIG. 1 is a side view of one form of limb portion,
FIG. 2 is a similar fragmentary view of another form, showing the end of the tool engaged,
FIG. 3 shows a preferred form of tool for use with the limb portion shown in FIG. 1,
FIG. 4 illustrates another form of limb'portion,
FIG. 5 a preferred form of tool for use with the limb portion of FIG. 4, and
FIG. 6 shows how a dislocator tool can be used to disengage the ball from its cup socket.
DESCRIPTION OF PREFERRED EMBODIMENTS Referring to FIGS. 1, 2 and 4, the limb portion comprises a stub 10 adapted to engage into the upper end of the natural limb after the ball has been removed, this stub being appropriately shaped and curved in conformity with the natural limb. A ball head 11 above the stub is to engage in a complementary cup such as a cup C shown in FIG. 6, or in the natural cup, and a wasited portion 11a is formed at the lower end of the ball 11, below which portion is a flange portion 12.
A bore or hole is made into the part below the ball head. As shown in FIG. I the hole 13 extends through the waisted portion and is of hexagonal cross-section. The tool for use with this construction consists of a handled rod 14, with a bent over end, formed hexagonally at 15 to engage in the hole 13. The relative angle of engagement from the six of the hexagon can be selected as desired.
The hole 13 need not necessarily be hexagonal but can be of other non-circular cross-section with the tool end appropriately shaped to engage therein without rel ative turning movement. In FIG. 2, the hole is oval, and the end 15 of the tool correspondingly shaped. The ends (and holes) can if desired, taper slightly to provide a wedge fit. Alternatively or as well, the hole engaging end can be provided with means to hold the said end against accidental withdrawal from the hole on an extraction, one such arrangement being shown diagrammatically in FIG. 2. A pin 16 is pivoted near to the end in a slot the arrangement being such that the pin is coaxial with the end when the tool is engaged to the limb portion, and can then be turned through a right angle to form a T-end. Other arrangements, such as a screw on cap could be provided.
In the form illustrated in FIG. 4, a screw-threaded blind bore 17 is made in the waisted portion in a general downward direction, there being a cross-cut 17a at the top. The tool for use with this form (FIG. 5) has a laterally extending lower end 14a with a screw 18 engaging in a threaded bore 19. The screw 18 can be threaded into the bore 17, and the underside of the end 14a is cut away to leave a tongue 14b so that the tongue can engage in the cross-cut 17a, and the screw tightened into the bore 17.
In all of the constructions, the tool can apply downward pressure, upward pull or turning movement to the limb portion. In the tool of FIG. 5, a second laterally projecting limb 20 is provided, this assisting manipulation on insertion. The tool rods can be of various shapes, i.e. have angled cranked or like lower ends with or without a laterally projecting limb to assist manipulation.
Referring now to FIG. 6, the operative end of a tongs like dislocator tool is shown, comprising two arms pivoted together at 21, one arm having an end part 22 to engage in the hole of the limb portion shown in FIG. 1 or 2 and the other arm having an end part 23 to engage the cup C. The cup C as illustrated has a plurality of projections 24, and a circumferential lipped border flange 25, under which the extremity (preferably with a projection as shown) can engage. The arms can be pivoted relatively to open out the end parts 22, 23 so to dislocate the joint. A tongs like tool also could be provided for use with the limb portion of FIG. 4, combined with a cup.
I claim:
1. An artificial hip joint comprising in combination a cup-like socket portion and a ball engaging in said socket portion, a limb engaging stub depending from said ball, a waisted portion below said ball, said waisted portion having a bore of non-circular cross-section extending therethrough, a flange below said waisted portion from which flange said stub depends, and a tool including a limb end portion non-rotatably engaging in said bore to facilitate manipulation of said hip joint during introduction and extraction thereof.
2. In combination, a hip joint as claimed in claim 1, and said tool being an introducer/extractor tool having a limb end portion for non-rotatable engagement in said bore.
a bore therethrough, a flange below said waisted portion from which flange said stub depends, a tongs-like dislocator tool including a pair of arms, the end of one of said arms engaging in said bore and the end of the other of said arms engaging said flange.

Claims (4)

1. An artificial hip joint comprising in combination a cup-like socket portion and a ball engaging in said socket portion, a limb engaging stub depending from said ball, a waisted portion below said ball, said waisted portion having a bore of non-circular cross-section extending therethrough, a flange below said waisted portion from which flange said stub depends, and a tool including a limb end portion non-rotatably engaging in said bore to facilitate manipulation of said hip joint during introduction and extraction thereof.
2. In combination, a hip joint as claimed in claim 1, and said tool being an introducer/extractor tool having a limb end portion for non-rotatable engagement iN said bore.
3. The combination as claimed in claim 2, comprising means for retaining said end portion in said bore.
4. An artificial hip joint comprising in combination a cup-like socket portion and a ball engaging in said socket portion, a limb engaging stub depending from said ball, a waisted portion below said ball and having a bore therethrough, a flange below said waisted portion from which flange said stub depends, a tongs-like dislocator tool including a pair of arms, the end of one of said arms engaging in said bore and the end of the other of said arms engaging said flange.
US00301846A 1972-03-09 1972-10-30 Artificial limb joints Expired - Lifetime US3801989A (en)

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GB235571A GB1373972A (en) 1972-03-09 1972-03-09 Artificial joints for the body
US00301846A US3801989A (en) 1972-03-09 1972-10-30 Artificial limb joints

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GB235571A GB1373972A (en) 1972-03-09 1972-03-09 Artificial joints for the body
US00301846A US3801989A (en) 1972-03-09 1972-10-30 Artificial limb joints

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US4222382A (en) * 1979-01-26 1980-09-16 Massachusetts Institute Of Technology Femoral component hip joint prosthesis extractor
US4310931A (en) * 1979-10-11 1982-01-19 Gebruder Sulzer A.G. Hip joint prosthesis
US4457306A (en) * 1982-05-05 1984-07-03 Howmedica, Inc. Tool and method for engaging two members of a joint prosthesis
US4642121A (en) * 1984-09-14 1987-02-10 Waldemar Link Gmbh & Co Joint endoprosthesis and instrument for knocking it in or out
US4677972A (en) * 1985-02-07 1987-07-07 Alain Tornier Coupling assembly for joining an implant tool to a bone implant
US4813962A (en) * 1986-04-03 1989-03-21 Deckner Andre G Hip joint prosthesis
US5196018A (en) * 1991-06-26 1993-03-23 Sulzer Medizinaltechnik Ag Knock-out instrument for the shanks of hipjoint prostheses
US5217463A (en) * 1990-04-11 1993-06-08 Mikhail W F Michael Method for performing knee surgery and retractors for use therein
US5303694A (en) * 1993-02-09 1994-04-19 Mikhail Michael W E Method for performing hip surgery and retractor for use therein
US5380331A (en) * 1990-04-11 1995-01-10 Mikhail; W. E. Michael Method for performing knee surgery and retractors for use therein
US5476466A (en) * 1993-07-20 1995-12-19 Zimmer, Inc. Orthopaedic positioning instrument
US5507830A (en) * 1989-02-08 1996-04-16 Smith & Nephew Richards Inc. Modular hip prosthesis
US5951564A (en) * 1996-12-18 1999-09-14 Bristol-Myers Squibb Company Orthopaedic positioning apparatus
US5993457A (en) * 1998-09-17 1999-11-30 The Regents Of The University Of California Measurement device and method for total hip arthroplasty
US6203575B1 (en) * 1998-01-16 2001-03-20 Sulzer Orthopaedie Ag Modular system for shaft prostheses
EP1106148A1 (en) * 1999-11-25 2001-06-13 Steinicke Maschinen- und Werkzeugbau AG Extracting instrument for disconnecting individual parts of an endoprosthesis
EP1169981A1 (en) * 2000-07-07 2002-01-09 Sulzer Orthopädie AG Ball head pulling device for a shaft prosthesis
US6517582B2 (en) 2000-07-07 2003-02-11 Sulzer Orthopedics Ltd. Ball draw-off apparatus for shaft prostheses
US20040010262A1 (en) * 2002-07-12 2004-01-15 Parkinson Fred W. Tool for gripping and orthopedic implant
US20040122437A1 (en) * 2002-12-20 2004-06-24 Dwyer Kimberly A. Alignment device for modular implants and method
US20070078464A1 (en) * 2005-09-30 2007-04-05 Depuy Products, Inc. Separator tool for a modular prosthesis
US20070244566A1 (en) * 2002-12-20 2007-10-18 Depuy Products, Inc. Trialing system and method for modular hip joint replacement system
US20080039950A1 (en) * 2006-08-11 2008-02-14 Howmedica Osteonics Corp. Expanding trial stem for orthopaedic surgery
US20090112219A1 (en) * 2007-10-31 2009-04-30 Daniels David W Taper sleeve extractor
US7854737B2 (en) 2002-12-20 2010-12-21 Depuy Products, Inc. Instrument and associated method of trailing for modular hip stems
US8070822B1 (en) * 1999-09-13 2011-12-06 Om Surgical (Uk) Limited Tool for controlling the mutual angle between the parts of an artificial hip joint
US20160051367A1 (en) * 2012-07-05 2016-02-25 LIMACORPORATE S.p.A Humeral implant for a shoulder prosthesis
EP3030160A2 (en) * 2013-08-06 2016-06-15 MicroPort Orthopedics Holdings, Inc. Methods and tools for hip replacement with supercapsular percutaneously assisted total hip approach
WO2016115330A1 (en) * 2015-01-15 2016-07-21 DePuy Synthes Products,Inc. Femoral stem including an anchor to facilitate assembly and implantation
WO2017019330A1 (en) * 2015-07-27 2017-02-02 Hip Innovation Technology, LLC Femoral cup or femoral ball extractor
US9615927B2 (en) * 2015-03-31 2017-04-11 Depuy Ireland Unlimited Company Orthopaedic surgical instrument system and method for protecting a femoral stem taper
US9615941B2 (en) 2007-05-02 2017-04-11 Zimmer, Inc. Orthopedic tool for altering the connection between orthopedic components
KR20180061141A (en) * 2015-07-27 2018-06-07 힙 이노베이션 테크놀러지 엘엘씨 Tools and methods for separating the thigh cup from the acetabular ball in an implanted hip prosthesis
US10022234B2 (en) 2015-01-15 2018-07-17 Depuy Ireland Unlimited Company Assembly tool
JP2018525121A (en) * 2015-08-27 2018-09-06 ヒップ イノベーション テクノロジー、エルエルシー Surgical tray, instrument, and method for removing components of a hip replacement prosthesis
US10322003B2 (en) 2015-06-30 2019-06-18 Depuy Ireland Unlimited Company Modular taper seal and method for orthopaedic prosthetic hip assembly
US10456270B2 (en) * 2016-08-12 2019-10-29 Shukla Medical Anterior hip extractor
US11207197B2 (en) 2019-08-01 2021-12-28 DePuy Synthes Products, Inc. Orthopaedic surgical instrument for total hip arthroplasty and associated orthopaedic surgical method of use
US11291549B2 (en) 2019-12-11 2022-04-05 Depuy Ireland Unlimited Company Ceramic acetabular shell liners with augments
US11376128B2 (en) 2018-12-31 2022-07-05 Depuy Ireland Unlimited Company Acetabular orthopaedic prosthesis and method
US11628066B2 (en) 2019-12-11 2023-04-18 Depuy Ireland Unlimited Company Ceramic acetabular shell liner with a metal ring having a lead-in surface
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US3955568A (en) * 1975-04-17 1976-05-11 Neufeld Alonzo J Tool and method for use in total hip implant
US4222382A (en) * 1979-01-26 1980-09-16 Massachusetts Institute Of Technology Femoral component hip joint prosthesis extractor
US4310931A (en) * 1979-10-11 1982-01-19 Gebruder Sulzer A.G. Hip joint prosthesis
US4457306A (en) * 1982-05-05 1984-07-03 Howmedica, Inc. Tool and method for engaging two members of a joint prosthesis
US4642121A (en) * 1984-09-14 1987-02-10 Waldemar Link Gmbh & Co Joint endoprosthesis and instrument for knocking it in or out
US4677972A (en) * 1985-02-07 1987-07-07 Alain Tornier Coupling assembly for joining an implant tool to a bone implant
US4813962A (en) * 1986-04-03 1989-03-21 Deckner Andre G Hip joint prosthesis
US5507830A (en) * 1989-02-08 1996-04-16 Smith & Nephew Richards Inc. Modular hip prosthesis
US5217463A (en) * 1990-04-11 1993-06-08 Mikhail W F Michael Method for performing knee surgery and retractors for use therein
US5290290A (en) * 1990-04-11 1994-03-01 Mikhail Michael W E Method for performing knee surgery and retractors for use therein
US5308350A (en) * 1990-04-11 1994-05-03 Mikhail Michael W E Femoral distractor for use in knee surgery
US5308349A (en) * 1990-04-11 1994-05-03 Mikhail W F Michael Method for performing knee surgery and retractors for use therein
US5380331A (en) * 1990-04-11 1995-01-10 Mikhail; W. E. Michael Method for performing knee surgery and retractors for use therein
US5397330A (en) * 1990-04-11 1995-03-14 Mikhail; E. Michael Posterior cruciate ligament retractor for use in performing knee surgery
US5196018A (en) * 1991-06-26 1993-03-23 Sulzer Medizinaltechnik Ag Knock-out instrument for the shanks of hipjoint prostheses
US5303694A (en) * 1993-02-09 1994-04-19 Mikhail Michael W E Method for performing hip surgery and retractor for use therein
US5476466A (en) * 1993-07-20 1995-12-19 Zimmer, Inc. Orthopaedic positioning instrument
US5951564A (en) * 1996-12-18 1999-09-14 Bristol-Myers Squibb Company Orthopaedic positioning apparatus
US6203575B1 (en) * 1998-01-16 2001-03-20 Sulzer Orthopaedie Ag Modular system for shaft prostheses
US5993457A (en) * 1998-09-17 1999-11-30 The Regents Of The University Of California Measurement device and method for total hip arthroplasty
WO2000015124A1 (en) * 1998-09-17 2000-03-23 The Regents Of The University Of California Measurement device and method for total hip arthroplasty
US8070822B1 (en) * 1999-09-13 2011-12-06 Om Surgical (Uk) Limited Tool for controlling the mutual angle between the parts of an artificial hip joint
EP1106148A1 (en) * 1999-11-25 2001-06-13 Steinicke Maschinen- und Werkzeugbau AG Extracting instrument for disconnecting individual parts of an endoprosthesis
US6517582B2 (en) 2000-07-07 2003-02-11 Sulzer Orthopedics Ltd. Ball draw-off apparatus for shaft prostheses
EP1169981A1 (en) * 2000-07-07 2002-01-09 Sulzer Orthopädie AG Ball head pulling device for a shaft prosthesis
US20040010262A1 (en) * 2002-07-12 2004-01-15 Parkinson Fred W. Tool for gripping and orthopedic implant
US7037311B2 (en) * 2002-07-12 2006-05-02 Zimmer Technology, Inc. Tool for gripping an orthopedic implant
US20040122437A1 (en) * 2002-12-20 2004-06-24 Dwyer Kimberly A. Alignment device for modular implants and method
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US7854737B2 (en) 2002-12-20 2010-12-21 Depuy Products, Inc. Instrument and associated method of trailing for modular hip stems
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