IE41735B1 - Improvements in or relating to prosthetic joints - Google Patents

Improvements in or relating to prosthetic joints

Info

Publication number
IE41735B1
IE41735B1 IE212275A IE212275A IE41735B1 IE 41735 B1 IE41735 B1 IE 41735B1 IE 212275 A IE212275 A IE 212275A IE 212275 A IE212275 A IE 212275A IE 41735 B1 IE41735 B1 IE 41735B1
Authority
IE
Ireland
Prior art keywords
stem
component
location
sleeve
bone
Prior art date
Application number
IE212275A
Other versions
IE41735L (en
Original Assignee
Elson Regineld Arnold
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 Elson Regineld Arnold filed Critical Elson Regineld Arnold
Publication of IE41735L publication Critical patent/IE41735L/en
Publication of IE41735B1 publication Critical patent/IE41735B1/en

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
    • A61F2/38—Joints for elbows or knees
    • A61F2/3836—Special connection between upper and lower leg, e.g. constrained
    • A61F2/384—Special connection between upper and lower leg, e.g. constrained hinged, i.e. with transverse axle restricting the movement
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
    • A61F2002/30362—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit with possibility of relative movement between the protrusion and the recess
    • A61F2002/30364—Rotation about the common longitudinal axis
    • 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
    • A61F2002/3082—Grooves
    • 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
    • A61F2/30907—Nets or sleeves applied to surface of prostheses or in cement
    • A61F2002/30919—Sleeves
    • 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
    • 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

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Physical Education & Sports Medicine (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

1514479 Prosthetic joints CHAS F THACKRAY Ltd and R A ELSON 29 Sept 1975 [1 Oct 1974] 42621/74 Heading A5R A prosthetic joint, especially a knee joint, comprises a tibial member including a metal stem I rotatably mounted in a plastics sleeve 5 fixed in the tibia 3, and a femoral member forming a hinge-type connection with an upper extension 4 of stem 1, whereby relative rotation is permitted between the bones of the joint about the longitudinal axis of the tibia. The sleeve 5 has an integral tapered peg 8, sleeve 5 and peg 8 having annular grooves 9 to assist in keying bone cement 11 thereto. In a modification, the stem is made of plastics and the sleeve of metal. The femoral member may be as described in Specification 1349587.

Description

This invention relates to prosthetic joints, particularly replacement hinge-type joints in the body.
According to the present invention there is provided a prosthetic joint for location between two bones and com5 prising a first component for location within one bone and a second component for location in the other bone and forming a hinge-type connection with the first component, said first component including a sleeve member for fixing in said one bone and a stem for rotational mounting within said sleeve member to allow relative rotation between the bones about the longitudinal axis of said one bone.
The invention has particular application as a prosthetic knee joint in which case the joint comprises a tibial member and a femoral member,either of which may be in the form of a sleeve member and rotatable stem.
In one embodiment in accordance with the present invention a prosthetic knee joint comprises a tibial member having a stem for location within a sleeve mounted in the tibia and a spindle extending transversely to the stem for loc2q ation within some mechanism affording attachment to the femur and providing rotation resembling flexion and extension of the knee.
The present invention provides a means whereby an artificial hinge-type joint may reduce torsional stresses which would otherwise prejudice the strength of the components of the joint or the strength of the bonds to the bones, by incorporating a rotational freedom into the longitudinal axis of the system.
An embodiment of the invention will now be described by way of example only and with reference to the accompanying drawings in which;Figure 1 is a cross section through part of the human leg showing an artificial joint of the invention in position therein; and Figure 2 is a section on line X-Y of Figure 1.
Referring to the drawings the prosthesis comprises a tibial member including a stem 1 made of metal, the stem including a lower portion 2 located within the tibia 3 and an upper extension 4, the axis of the extension making an obtuse angle β with the axis of the lower portion 2.
The femoral portion of the prosthesis is not shown in the drawings and it may, for instance be similar to that described in British Patent Specification No. 1,349,587.
In this case a spindle, which extends transversely to the stem of the tibial member, is provided for location within the femoral condyles, said spindle engaging with e.g. by passing through a bore in, the free end of the extension. The spindle projects on each side of the extension and the projecting ends are each pivotally supported by a bearing bush which is designed for anchorage in a femoral condyle. However, it will be understood that the femoral portion of the prosthesis may be different, both in design and principle, from that described in the above-mentioned 3,7 3 S Patent Specification, although still forming a hinge joint vzith the tibial member.
Lower portion 2 of stem 1 is cylindrical in from and is located for free rotation in the sleeve portion 5 of tibial member 6 made of plastics material. Stem 1 further includes an annular shoulder 7 which engages the Upper annular surface of sleeve portion 5.
Member 6 includes an integral tapered peg portion 8, which when the said member is in position in the tibia 3, extends downwardly therein along an extension of the longitudinal axis of the sleeve portionl. Peg portion 8 and the sleeve portion 5 of the member 6 are provided with transverse annular grooves 9.
Member 6 is fitted into a reamed bore 10 in the tibia and is held in place by a conventional bone cement 11. The grooves 9 assist in keying the cement to the member 6.
In the above described embodiment, rotation of the stem 1 within sleeve portion 5 is possible thereby relieving torsional stresses which would otherwise have been imparted to the components of the device during the functioning of the lower limb.
It should be appreciated that the materials used for the member 6 and the stem may be changed. Thus, for instance, it is possible that the member 6 may be made of metal and the stem of plastics material.

Claims (6)

CLAIMS:
1. A prosthetic joint for location between two bones and comprising a first component for location within one bone and a second component for location in the other bone and forming a hinge-type connection with the first component, said first component including a sleeve member for fixing in said one bone and a stem for rotational mounting within said sleeve member to allow relative rotation between the bones about the longitudinal axis of said one bone.
2. A prosthetic joint according to claim 1 wherein the joint is a knee joint and said first component is for location in the tibia and said second component is for location in the femur.
3. A prosthetic joint according to claim 2 wherein the stem is provided with an upper extension, the axis of the extension making an obtuse angle with the axis of the stem, and the second component includes a spindle for location within the femoral condyles and engaging with and projecting on each side of the free end of the extension.
4. A prosthetic joint according to claim 3 wherein the second component further includes two bearing bushes designed for anchorage in the femoral condyles pivotally to support opposite ends of the spindle.
5. A prosthetic joint according to any of the preceding claims wherein the stem is made of metal and the sleeve is made of plastics material,
6. A prosthetic joint substantially as described herein with reference to the accompanying drawings.
IE212275A 1974-10-01 1975-09-29 Improvements in or relating to prosthetic joints IE41735B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4262174A GB1514479A (en) 1974-10-01 1974-10-01 Prosthetic joints

Publications (2)

Publication Number Publication Date
IE41735L IE41735L (en) 1976-04-01
IE41735B1 true IE41735B1 (en) 1980-03-12

Family

ID=10425249

Family Applications (1)

Application Number Title Priority Date Filing Date
IE212275A IE41735B1 (en) 1974-10-01 1975-09-29 Improvements in or relating to prosthetic joints

Country Status (4)

Country Link
DE (1) DE2543911A1 (en)
FR (1) FR2289161A1 (en)
GB (1) GB1514479A (en)
IE (1) IE41735B1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4301553A (en) * 1975-08-15 1981-11-24 United States Surgical Corporation Prosthetic knee joint
DE2549318C3 (en) * 1975-11-04 1981-10-29 Dadurian, Aram, Dr.Med. Knee joint prosthesis
FR2403068A2 (en) * 1976-07-28 1979-04-13 Rambert Andre Partial knee joint prosthesis - has femoral plate set directly into femur without anchorage socket
DE2811331A1 (en) * 1978-03-16 1979-09-27 Schuett & Grundei Sanitaet ELBOW JOINT IN THE FORM OF A FULL ENDO-PROSTHESIS
EP0010527A1 (en) * 1978-10-06 1980-04-30 L.I.M.A. Lualdi Industrie MeccanicheAnduis Srl. Prosthesis for limbs
US4892551A (en) * 1986-07-03 1990-01-09 Habley Medical Technology Corporation Impact dissipating and load diverting total hip arthroplasty prosthesis
GB9305279D0 (en) * 1993-03-15 1993-05-05 Univ London Total knee replacement prothesis
DE4434806B4 (en) * 1994-09-29 2007-05-24 Peter Brehm knee prosthesis
US6485519B2 (en) 2001-01-29 2002-11-26 Bristol-Myers Squibb Company Constrained prosthetic knee with rotating bearing
US6719800B2 (en) 2001-01-29 2004-04-13 Zimmer Technology, Inc. Constrained prosthetic knee with rotating bearing
GB0503536D0 (en) * 2005-02-21 2005-03-30 Kriek Hans R Joint devices

Also Published As

Publication number Publication date
GB1514479A (en) 1978-06-14
IE41735L (en) 1976-04-01
DE2543911A1 (en) 1976-04-08
FR2289161A1 (en) 1976-05-28

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