GB2301532A - Knee frame for lower leg amputees - Google Patents

Knee frame for lower leg amputees Download PDF

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Publication number
GB2301532A
GB2301532A GB9511135A GB9511135A GB2301532A GB 2301532 A GB2301532 A GB 2301532A GB 9511135 A GB9511135 A GB 9511135A GB 9511135 A GB9511135 A GB 9511135A GB 2301532 A GB2301532 A GB 2301532A
Authority
GB
United Kingdom
Prior art keywords
knee
shin member
frame
pivot
axis
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.)
Withdrawn
Application number
GB9511135A
Other versions
GB9511135D0 (en
Inventor
Colin Dix
Anthony James Parsons
Rodney Bruce Edward Sturch
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.)
BYRNE MICHAEL O
Original Assignee
BYRNE MICHAEL O
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 BYRNE MICHAEL O filed Critical BYRNE MICHAEL O
Priority to GB9511135A priority Critical patent/GB2301532A/en
Publication of GB9511135D0 publication Critical patent/GB9511135D0/en
Publication of GB2301532A publication Critical patent/GB2301532A/en
Withdrawn legal-status Critical Current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
    • A61F2/50—Prostheses not implantable in the body
    • A61F2/60—Artificial legs or feet or parts thereof
    • A61F2/64—Knee joints
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/50—Prostheses not implantable in the body
    • A61F2/68—Operating or control means
    • A61F2/74—Operating or control means fluid, i.e. hydraulic or pneumatic
    • 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
    • A61F2/50—Prostheses not implantable in the body
    • A61F2/60—Artificial legs or feet or parts 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
    • A61F2/50—Prostheses not implantable in the body
    • A61F2002/5038—Hinged joint, e.g. with transverse axle restricting the movement
    • A61F2002/5039—Hinged joint, e.g. with transverse axle restricting the movement allowing only for single rotation
    • 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
    • A61F2/50—Prostheses not implantable in the body
    • A61F2002/5038—Hinged joint, e.g. with transverse axle restricting the movement
    • A61F2002/5043—Hinged joint, e.g. with transverse axle restricting the movement with rotation-limiting stops, e.g. projections or recesses
    • 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
    • A61F2/50—Prostheses not implantable in the body
    • A61F2/5044—Designing or manufacturing processes
    • A61F2002/5055—Reinforcing prostheses by embedding particles or fibres during moulding or dipping, e.g. carbon fibre composites

Landscapes

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

Abstract

The frame comprises a shin member 12 of reinforced plastics having a longitudinal axis 12A, a knee pivot 13 located at or near one end of the shin member to provide a pivot axis at right angles to said axis 12A, a knee 14 pivotably mounted on the shin member by way of pivot 13 to provide for rotation of the knee and stop means 34,35 on or associated with the knee serving, in combination with the shin member or an extension thereof, to establish an angular limit of travel for the knee relative to axis 12A.The knee frame may incorporate a bridging platform 18 for the knee whereby the frame is connected directly or indirectly to a below-knee prosthesis such as a socket.The shin member may be fabricated from carbon fibre-reinforced material by a resin transfer moulding process.A pneumatic/hydraulic movement regulator may be mounted within the shin member.

Description

KNEE FRAME AND MANUFACTURING METHOD THEREFORE This invention relates to a knee frame and to a method of manufacturing it. A knee frame takes the form of an orthopaedic attachment for a person having had a lower leg amputation. The frame serves to provide for a knee function.
According to a first aspect of the present invention there is provided a knee frame comprising 1 a shin member of reinforced plastic material having a longitudinal axis; 2 a knee pivot located at or near one end of the shin member to provide a pivot axis at right angles to the logitudinal axis; 3 a knee pivotably mounted on the shin member by way of the knee pivot to provide for rotation of the knee about the pivot axis; and 4 stop means on or associated with the knee serving, in combination with the shin member or an extension thereof, to establishing an angular limit of travel for the knee relative to the longitudinal axis.
According to a first preferred version of the first aspect the knee frame is provided with a bridging platform for the knee whereby the knee frame is connected directly or indirectly to a below knee prosthesis such as a socket.
According to a second aspect of the present invention there is provided a method of manufacturing a knee frame according to the first aspect where the shin member is fabricated from carbon fibre reinforced material by a resin transfer moulding process.
An exemplary embodiment of the first aspect of the present invention will now be described with reference to the accompanying drawings of a knee frame of which: Figure 1 is a side view; Figure 2 is a front view in direction II of Figure 1; Figure 3 is a rear view in direction III of Figure 1; Figures 4A, 4B and 4C show in more detail a component of Figure 1; and Figures 5A, 5B, 5C and 5D show in more detail a further component of Figure 1.
Figures 1, 2 and 3 variously show a knee frame 11 including a shin member 12 with a longitudinal axis 12A which houses knee pivot mounts 13 defining a pivot axis 13A. A knee 14 is made up of a knee platform 15 (see Figures 4A to 4C) and a knee ball 16 (see Figures 5A to 5D).
The knee platform 15 is pivotably coupled to pivot mounts 13 by way of pin 17.
A bridging platform 18 (shown detached in Figures 1 to 3) serves to connect the knee platform 15 to a socket mounted on a limb stump of a user.
The shin member 12 is fabricated by means of a resin transfer moulding technique making use of a carbon fibre reinforced plastics material. Knee pivot mounts 13 are attached to the shin member along with mounts 19 and an attachment plate 20 which serves in this case to locate a pylon to receive a foot support. However the attachment plate 20 can serve to locate any modular component having the universal four hole pattern shown.
The knee platform 15 and knee ball 16 are bolted together to provide knee 14.
The knee platform 15 is shown in detail in Figure 4A (plan view), Figure 4B (side view) and figure 4C (end view). The platform 15 is fabricated from aluminium alloy and is provided with a front face 21 curved in two dimensions to give a frusto domed surface and flat side faces 22, 23, 24. Blind bores 25, 26 provide for the attachment of knee ball 16. Lateral bore 27 serves to receive pin 17. Tapped bores 28 to 31 serve to provide for the attachment of the platform to bridging platform 18 or to any modular component having the 4 hole universal pattern. The platform 15 is provided with cut-out 29 to reduce the overall weight of the platform 15; and rear opening 30 to provide clearance for free movement of other components, such as a swing control piston or its mounting, located on the knee frame.
The knee ball 16 is shown in detail in Figure 5A (plan view), Figure 5B (first side view), Figure 5C (end view in direction C in Figure 5B) and Figure 5D (second side view, partially sectioned). Bores 31, 32 provide for a pin location for a guide/antirotation coupling of the knee ball 16 to the knee platform 15. Front face 33 is curved in two dimensions to give a frusto domed surface. In combination the front face 33 and front face 21 of the knee platform 15 serve to provide a smooth face over which a cosmesis can readily slide.The knee ball 16 incorporates end front end stop 34 and rear end stop 35 which serve to provide limits to the angular range X (Figure 1) over which the knee 14 (that is to say the combination of platform 15 and ball 16) can travel about axis 13A relative to longitudinal axis 12A. The shin member 12 incorporates a reinforced leading edge 36 to receive front stop 34 and a reinforced trailing edge 37 to receive back stop 35.
In use the knee frame is mounted on a socket mounted on the leg stump of a user. In actual use there is likely to be a pneumatic/hydraulic movement regulating means mounted within the shin member 12 with one end attached to mounts 19t and the other to the knee 14 to govern motion of the knee relative to the shin member.
However with or without such a regulating means the end stops 34, 35 prevent the shin member 12 moving outside a reasonable range of travel angle X relative to the knee 14 and so to the rest of the users body.
By making use of a resin transfer moulding technique to manufacture the shin member it is possible to provide a light but extremely strong component manufactured to very close tolerances.

Claims (5)

CLAIMS 1 A knee frame comprising:
1 a shin member of reinforced plastic material having a longitudinal axis;
2 a knee pivot located at or near one end of the shin member to provide a pivot axis at right angles to the logitudinal axis;
3 a knee pivotably mounted on the shin member by way of the knee pivot to provide for rotation of the knee about the pivot axis; and
4 stop means on or associated with the knee serving, in combination with the shin member or an extension thereof, to establishing an angular limit of travel for the knee relative to the longitudinal axis.
2 A knee frame as claimed in Claim 1 incorporating a bridging platform for the knee whereby the knee frame is connected directly or indirectly to a below knee prosthesis such as a socket.
3 A knee frame as claimed in Claim 1 or Claim 2 in which the shin member is fabricated from carbon fibre reinforced material by a resin transfer moulding process.
4 A knee frame as hereinbefore described with reference to the accompanying drawings.
5 A method of manufacturing a knee frame according to the first aspect where the shin member is fabricated from carbon fibre reinforced material by a resin transfer moulding process.
GB9511135A 1995-06-02 1995-06-02 Knee frame for lower leg amputees Withdrawn GB2301532A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9511135A GB2301532A (en) 1995-06-02 1995-06-02 Knee frame for lower leg amputees

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9511135A GB2301532A (en) 1995-06-02 1995-06-02 Knee frame for lower leg amputees

Publications (2)

Publication Number Publication Date
GB9511135D0 GB9511135D0 (en) 1995-07-26
GB2301532A true GB2301532A (en) 1996-12-11

Family

ID=10775374

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9511135A Withdrawn GB2301532A (en) 1995-06-02 1995-06-02 Knee frame for lower leg amputees

Country Status (1)

Country Link
GB (1) GB2301532A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0016268A1 (en) * 1977-07-08 1980-10-01 ROBERT KELLIE & SON LIMITED Lockable hinge joint for limb supports and other orthopaedic appliances
GB2085351A (en) * 1980-09-26 1982-04-28 Blatchford Chas A And Sons Ltd A method of making an artificial limb component
GB2192544A (en) * 1986-07-18 1988-01-20 Hanger & Co Ltd J E Knee prosthesis
EP0613668A1 (en) * 1993-03-03 1994-09-07 CENTRE STEPHANOIS DE RECHERCHES MECANIQUES HYDROMECANIQUE ET FROTTEMENT Société anonyme Kinematic exernal proteses for a lower limb, notably a knee

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0016268A1 (en) * 1977-07-08 1980-10-01 ROBERT KELLIE & SON LIMITED Lockable hinge joint for limb supports and other orthopaedic appliances
GB2085351A (en) * 1980-09-26 1982-04-28 Blatchford Chas A And Sons Ltd A method of making an artificial limb component
GB2192544A (en) * 1986-07-18 1988-01-20 Hanger & Co Ltd J E Knee prosthesis
EP0613668A1 (en) * 1993-03-03 1994-09-07 CENTRE STEPHANOIS DE RECHERCHES MECANIQUES HYDROMECANIQUE ET FROTTEMENT Société anonyme Kinematic exernal proteses for a lower limb, notably a knee

Also Published As

Publication number Publication date
GB9511135D0 (en) 1995-07-26

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)