WO1996029959A1 - Dispositif d'alignement et procede associe - Google Patents

Dispositif d'alignement et procede associe Download PDF

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Publication number
WO1996029959A1
WO1996029959A1 PCT/GB1996/000560 GB9600560W WO9629959A1 WO 1996029959 A1 WO1996029959 A1 WO 1996029959A1 GB 9600560 W GB9600560 W GB 9600560W WO 9629959 A1 WO9629959 A1 WO 9629959A1
Authority
WO
WIPO (PCT)
Prior art keywords
axis
pylon
alignment
socket
coupling
Prior art date
Application number
PCT/GB1996/000560
Other languages
English (en)
Inventor
Colin Dix
Anthony James Parsons
Rodney Bruce Edward Sturch
Original Assignee
O'byrne, Michael
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 O'byrne, Michael filed Critical O'byrne, Michael
Priority to EP96905947A priority Critical patent/EP0759732A1/fr
Publication of WO1996029959A1 publication Critical patent/WO1996029959A1/fr

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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
    • A61F2/601—Peg legs, e.g. wooden legs
    • 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
    • A61F2/76—Means for assembling, fitting or testing prostheses, e.g. for measuring or balancing, e.g. alignment means
    • 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
    • A61F2/60—Artificial legs or feet or parts thereof
    • A61F2/66—Feet; Ankle joints
    • A61F2/6607—Ankle 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
    • A61F2/78—Means for protecting prostheses or for attaching them to the body, e.g. bandages, harnesses, straps, or stockings for the limb stump
    • A61F2/80—Sockets, e.g. of suction type
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30108—Shapes
    • A61F2002/30199—Three-dimensional shapes
    • A61F2002/30273—Three-dimensional shapes pyramidal
    • A61F2002/30276—Three-dimensional shapes pyramidal frustopyramidal
    • 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
    • A61F2002/30433—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using additional screws, bolts, dowels, rivets or washers e.g. connecting screws
    • 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
    • A61F2002/30469—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using band clamps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30476—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism
    • A61F2002/30507—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism using a threaded locking member, e.g. a locking screw or a set screw
    • 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
    • A61F2002/5016—Prostheses not implantable in the body adjustable
    • A61F2002/5018—Prostheses not implantable in the body adjustable for adjusting angular orientation
    • 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
    • A61F2002/5016—Prostheses not implantable in the body adjustable
    • A61F2002/502—Prostheses not implantable in the body adjustable for adjusting length
    • 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
    • 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
    • A61F2002/5096—Ball-and-socket joints
    • A61F2002/5098—Ball-and-socket joints with rotation-limiting means
    • 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
    • A61F2/66—Feet; Ankle joints
    • A61F2002/6614—Feet
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/0041—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using additional screws, bolts, dowels or rivets, e.g. connecting screws
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0063—Three-dimensional shapes
    • A61F2230/0086—Pyramidal, tetrahedral, or wedge-shaped

Definitions

  • This invention relates to an alignment apparatus and method.
  • it is concerned with an alignment apparatus and method for use with an artificial limb.
  • an accurately fitted socket is secured over the leg stump.
  • a pylon has a second longitudinal axis
  • the foot member has a ground contacting surface
  • the user has forward direction of travel defined by a third axis; then there is a need to ensure that the prosthesis reproduces and optimal alignment of the first and second axis to enable the user to walk in the direction of the third axis during interaction of the foot member with the ground without causing undue reaction between the stump and the prosthetic device.
  • alignment apparatus (14) for a prosthesis comprising: a socket (15) for mounting on a residual limb (13) of a user (10) so as to provide a first longitudinal axis (LI) for a socket (15) when mounted on the residual limb (13); a pylon member (64) having a first end and a second end; the first end being linked by a coupling (16) to the socket (15); the second end providing for direct, or indirect, linkage to a ground engagable member (71); the pylon member (64) having a second longitudinal axis (L2); characterised in that the coupling (16) between the socket (15) and the pylon (64) provides for: angular adjustment of the first axis (LI) to the second axis (L2); clamping of the pylon in a given angular alignment of the first axis (LI) and the second axis (L2); lateral displacement of the first axis (LI) relative to the second axi
  • alignment apparatus (14) as claimed in Claim 1 characterised in that the coupling (16) comprises: a support plate (23) for attachment to the socket (15); the support plate (23) incorporating an anchor block (25) having at least two horizontally opposed pairs of faces (26/28, 27/29) each lying in a plane which converges towards the socket (15); an alignment device (40) having: at one end (42) at least two horizontally opposed pairs of threaded members (47 - 50) each pair (47/49, 48/50) being directed to correspondingly opposed faces (26/28, 27/29) on the anchor block (25) to enable the alignment device (40) to be either displaced relative to the support plate (23) along a displacement axis (PP, QQ)) transverse the first axis (LI) or to be secured in a selected position on the displacement axis (PP, QQ); a connector (60) for the coupling (16) to the pylon (64), the connector (60) being linked to the
  • the alignment apparatus (14) is characterised in that the coupling (16) incorporates a tubular clamp (62) to receive and retain the pylon member (64).
  • the alignment apparatus (14) is characterised in that the pylon member (64) is extensible to provide for overall length adjustment of the apparatus (14).
  • the alignment apparatus (14) as claimed in any preceding claim characterised in that the second end (72) of the pylon (64) is adapted to receive a foot or ground contacting member (71) by way of a second coupling retained on the second end (72) of the pylon (64) by demountable means (74, 75) parallel to a longitudinal axis (L3) of the pylon.
  • the second coupling provides for the foot or ground contacting member (71) to rotate about an ankle axis perpendicular to the longitudinal axis of the pylon (64).
  • the building-up step involves lamination around the apparatus (14).
  • the apparatus (14) is dismantled from the fabricated device save for the second coupling (71) which remains incorporated in the fabricated device.
  • a prosthetic device fabricated by a method according to the second aspect.
  • Figure 1 is front elevation of part of a user equipped with the apparatus
  • Figures 2A is a plan view
  • Figure 2B a section of a first component
  • Figure 3A is a plan view from above
  • Figure 3B is a side view
  • Figure 3C is a plan view from beneath of a second component
  • Figure 4A is a plan view from above
  • Figure 4B is a side view
  • Figure 4C is a plan view from beneath of a third component;
  • Figure 5A is a side view,
  • Figure 5B is a further side view at right angles to that of Figure 5A.
  • Figure 5C is an end view seen from direction A in Figure 5A of a fourth component
  • Figures 6A, 6B show the second, third and fourth components when assembled
  • Figure 7A is a plan view from above
  • Figure 7B is a side view
  • Figure 7C is a section on X-X of Figure 7A.
  • the lower part of a user 10 is shown with a complete left leg 11 with a knee joint 12.
  • the user 10 has had their right leg amputated leaving a stump 13.
  • the stump 13 has a longitudinal axis LI.
  • the alignment apparatus 14 is used by a prosthetist.
  • the stump 13 is clad with a socket 15 of fibre reinforced plastics material which is strapped to the body of the user 10 in a known manner.
  • the interior of the socket 15 conforms closely to the configuration of the outside of the stump 13 from which it is separated by a sock of woven material.
  • the socket 15 is connected to the rest of the apparatus means generally indicated in Figure 1 as coupling 16.
  • the socket 15 has anchored in aperture 17 in its lower end 18 a cup 19 (Figure 2) serving as an upper end for coupling 16.
  • Figures 2A. 2B
  • FIG. 2 A shows the cup 19 in plan view and in Figure 2B in section.
  • Cup 19 has a spigot 20 which projects through the aperture 17 and a chamfered perimeter 21 which closely abuts an inside complementary rim within the socket 15.
  • the cup 19 is held in place in socket 15 by way of bolts extending through bores 19A-D.
  • Bores 22A-D serve for the attachment of support plate 23 ( Figure 3).
  • Longitudinal axis LI extends through axial centre of cup 19.
  • Support plate 23 has projecting from its outer side 24 an integrally formed block 25 having four faces 26 to 29 laid out symmetrically in a square .
  • the faces 26 to 29 are inclined inwardly at 6° so that length 30 of face 31 is greater than, typically, side 32 of the face 27.
  • the support plate 23 is held in place on socket 15 by way of bolts extending through the bores 22 A to 22D in the cup 19 engaging with, respectively, threaded bores 23A to 23D in the support plate 23.
  • centre 23 A is coaxial with axis LI.
  • Figures 6A, 6B show the relationship between support plate 23 and the remaining parts of the coupling 16 namely the alignment device 40 (Figure 4 A to 4C) and connector 60 ( Figure 5A and 5B).
  • Alignment device 40 has a longitudinal axis 40A and comprises an end cup 42 and a ball joint mounting stub 42 A.
  • the end cup 42 is square in plan with side walls 43 to 46 pierced by, respectively, threaded bores 47 to 50.
  • the bores 47 to 50 have, respectively, longitudinal axis 47A to 50A.
  • each bore 47 to 50 contains a bolt which can be displaced by being screwed along the axis of the bore either towards or away from the axis 41.
  • Bores 47, 49 are in effect horizontally opposed in action and contain bolts by means of which the alignment device 40 can be displaced relative to the block 25 along axis PP.
  • bores 48, 50 are effectively horizontally opposed and contain bolts by means of which block 25 can be displaced along axis QQ.
  • End cup 42 has a frusto conical section 53 containing four depressions 54 to 57 laid out on a square pattern. Each depression 54 to 57 has, respectively, an axis of symmetry 54A to 57A whereby the end cup 42 is adjustably coupled to connector 60 as will be described hereafter.
  • Stub 43 extends symmetrically from cup 42 along axis 41 and serves to receive spherical bearing 58 which provides for ready angular displacement of the device 40 relative to connector 60 in which the bearing 58 is mounted as described hereafter.
  • Connector 60 comprises a head 61 by means of which the connector 60 can be demountably secured to alignment device 40; and a skirt 62 whereby the connector is secured to upper end 63 of pylon 64.
  • Longitudinal axis 65 of the connector is co-axial with longitudinal axis L2 of the pylon 64.
  • the head 61 has a recessed flange 66 lying at an angle of 60° to axis 65.
  • the flange 66 has threaded bores 67 to 70 uniformly spaced around the flange 66. These bores 67 to 70 serve to receive bolts whereby the connector 60 can be linked to the alignment device 40.
  • the inner ends of the bolts serve to seat in recesses 47 to 50 of device 40.
  • the skirt 62 contains a long keyhole slot 72. On either side of the slot 72 extensions 73, 74 contain coaxial bores 75, 76. Bolt 77 extending through bores 75, 76 allow for the circumference of the skirt 62 to be varied to provide for the clamping of the connector about pylon 64.
  • Figure 6A shows alignment device 40 when locating block 25 at one extremity of travel along axis QQ when the face 27 of block 25 abuts the inner face of wall 44 of end cup 42.
  • the block 25 can be displaced and located at any point along axis QQ over a range Q'.
  • the block can be displaced and located at any point along axis PP (at right angles to axis QQ) and located at any point along axis PP over a range P'.
  • bolts in bores 47 to 50 of end cup 42 serve to clamp the block 25, and so the carrier 23 in a position in which the axis S, which is co-axial with axis LI of the stump 13, is off set from axis 41 of device 40.
  • the axis S is at an angle to axis L2.
  • Figure 6B shows alignment device 40 with the block 25 as before abutting the inner face of wall 44 of end cup 42. However in this case the axis S is now off-set from axis L2 without being at an angle to it. Axis 41 of device 40 is in this case co-axial with axis L2.
  • the apparatus facilitates the ready setting of a working position for the apparatus which provided for independent angular and off-set displacement between axis Ll and L2.
  • FIG. 7A. 7B and 7C This shows a foot element 71 for attachment to lower end 72 of pylon 64 by way of sleeve 73.
  • the element 71 serves to define an axis L3 for alignment with the direction of travel of the user 10.
  • the element 71 is attached to pylon 64 by screws extending through bores 74, 75. Bores 76, 77 serve to attach a resilient sole to the foot element when required.
  • a prosthetist having fitted the apparatus to the user can readily establish the optimum dimensions and angles required for a lower limb prosthesis for the user.
  • the socket 15 is removed from the residual limb complete with the alignment module attached with the established dimensions, angles and off -sets preserved.
  • a monolithic lower limb prosthesis is then built up by placing a preformed plastic former over the elements of the alignment module, following the removal of support plate 23, such that the former extends the length of the apparatus and with the upper end of the former abutting the lower periphery of socket 15 and the lower end of the former extending to the foot element 71.
  • the prosthesis is then fabricated by a laminating process of lamination over the former.
  • the cup 19 is removed to expose the upper end of the apparatus so as to allow the removal of the assembled coupling 16 and pylon 64.
  • the socket 15, and foot attachment 71 are left incorporated as integral parts of the fabricated prosthesis for use by the patient.
  • bores 74, 75 in the foot attachment 71 which are parallel to axis L3 whereby screws attach the foot attachment to the pylon the pylon is readily released from the foot attachment 71 even when the attachment has been incorporated in the prosthesis built up on the assembled apparatus.
  • the embodiment provides an alignment apparatus in the form of a set of components whereby a prosthetist can readily assemble, and locate the apparatus on a patient and thereafter establish the necessary parameters of lengths, angles and offsets on the suitably clamped up components of the apparatus.
  • the apparatus Once the apparatus is duly set up it is readily removed from the patient and the apparatus used directly in the fabrication of the prosthesis. It removes the need for taking off the parameters established during the trial and applying them as a separate step to components used in making up the eventual prosthesis. That is to say the apparatus once set up does not require a copying step but merely the creation of a prosthesis around the apparatus as assembled.
  • the invention provides for a prosthetist to readily establish the required parameters for a prosthesis for a given patient and fabricate the prosthesis in close accordance with the required parameters around the unit by means of which the parameters were established. Once made the major part of the unit is then removed from the fabricated prosthesis to leave a strong and light prosthesis and enable most of the items to be used for further measurement and fabrication for subsequent patients.

Landscapes

  • Health & Medical Sciences (AREA)
  • Transplantation (AREA)
  • Biomedical Technology (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Engineering & Computer Science (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)
  • Orthopedic Medicine & Surgery (AREA)
  • Prostheses (AREA)

Abstract

L'invention porte sur un dispositif d'alignement (14) d'une prothèse orthopédique comprenant un couvre-moignon (15) se plaçant sur le moignon (13) du patient (10) et définissant un premier axe longitudinal (L1) de ce même couvre-moignon (15) lorsque celui-ci est en place sur le moignon; un pilon (64) présentant une première et une deuxième extrémité (72) dont la première est fixée par un accouplement (16) au couvre-moignon et la deuxième (72) sert de liaison directe ou indirecte avec l'élément (71) foulant le sol. Le pilon (64) présente un deuxième axe longitudinal (L2). L'accouplement (16) entre le couvre-moignon (15) et le pilon (64) permet d'ajuster l'angle formé entre le premier axe (L1) et le second (L2), de bloquer le pilon (64) selon un angle donné formé entre le premier axe (L1) et le second (L2), de décaler latéralement le premier axe (L1) par rapport au second (L2), et de bloquer le pilon (64) selon un décalage latéral donné entre le premier axe (L1) et le second (L2). L'invention porte en outre sur les procédés de fabrication d'une prothèse et du susdit dispositif d'alignement.
PCT/GB1996/000560 1995-03-10 1996-03-08 Dispositif d'alignement et procede associe WO1996029959A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP96905947A EP0759732A1 (fr) 1995-03-10 1996-03-08 Dispositif d'alignement et procede associe

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9504862A GB2298795A (en) 1995-03-10 1995-03-10 Apparatus for aligning a prosthesis
GB9504862.5 1995-03-10

Publications (1)

Publication Number Publication Date
WO1996029959A1 true WO1996029959A1 (fr) 1996-10-03

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PCT/GB1996/000560 WO1996029959A1 (fr) 1995-03-10 1996-03-08 Dispositif d'alignement et procede associe

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Country Link
EP (1) EP0759732A1 (fr)
GB (1) GB2298795A (fr)
WO (1) WO1996029959A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100918898B1 (ko) 2007-09-06 2009-09-23 선동윤 의족의 동적 중심 정렬용 구동장치

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7097666B2 (en) 2003-07-25 2006-08-29 American Prosthetic Components, Inc. Device for angularly coupling prosthetic components

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3414908A (en) * 1964-07-24 1968-12-10 Vissa Ltd Alignment devices for use with prostheses
EP0267347A1 (fr) * 1986-11-14 1988-05-18 PI Protesindustri Aktiebolag Procédé et dispositif pour ajuster et fixer une jambe artificielle
EP0284360A1 (fr) * 1987-03-24 1988-09-28 J.E. HANGER & COMPANY LIMITED Dispositif d'alignement et procédé de fabrication d'un membre artificiel
EP0331468A2 (fr) * 1988-03-04 1989-09-06 CHAS. A. BLATCHFORD & SONS LIMITED Prothèse pour membre inférieur
DE3937379A1 (de) * 1989-11-09 1991-05-16 Kraemer Kg F W Justiergeraet fuer unterschenkelprothesen
US5047063A (en) * 1990-11-30 1991-09-10 Sen Jung Chen Adjustment device for artificial limbs
EP0497686A1 (fr) * 1991-01-28 1992-08-05 Proteval Dispositif de liaison ajustable pour prothèse de membre
WO1993017640A1 (fr) * 1992-03-11 1993-09-16 Phillips L Van Appareil fixe a demeure pour l'alignement de protheses

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Publication number Priority date Publication date Assignee Title
GB1208421A (en) * 1966-10-20 1970-10-14 Rubery Owen And Company Ltd Improvements relating to artificial legs.
GB2149309B (en) * 1982-03-02 1985-11-20 Blatchford & Sons Ltd Making artificial limbs
FR2530945B1 (fr) * 1982-07-30 1986-04-18 Proteor Sa Dispositif de recherche d'alignement, d'alignement et d'orientation d'une prothese pour amputation de cuisse ou de jambe
SE446373B (sv) * 1983-06-15 1986-09-08 Landstingens Inkopscentral Instellbart forbindningselement for protesdelar
SE454046B (sv) * 1986-05-12 1988-03-28 Gustav Rennerfelt Underbensprotes som medger grundinstellning med pasatt protes

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3414908A (en) * 1964-07-24 1968-12-10 Vissa Ltd Alignment devices for use with prostheses
EP0267347A1 (fr) * 1986-11-14 1988-05-18 PI Protesindustri Aktiebolag Procédé et dispositif pour ajuster et fixer une jambe artificielle
EP0284360A1 (fr) * 1987-03-24 1988-09-28 J.E. HANGER & COMPANY LIMITED Dispositif d'alignement et procédé de fabrication d'un membre artificiel
EP0331468A2 (fr) * 1988-03-04 1989-09-06 CHAS. A. BLATCHFORD & SONS LIMITED Prothèse pour membre inférieur
DE3937379A1 (de) * 1989-11-09 1991-05-16 Kraemer Kg F W Justiergeraet fuer unterschenkelprothesen
US5047063A (en) * 1990-11-30 1991-09-10 Sen Jung Chen Adjustment device for artificial limbs
EP0497686A1 (fr) * 1991-01-28 1992-08-05 Proteval Dispositif de liaison ajustable pour prothèse de membre
WO1993017640A1 (fr) * 1992-03-11 1993-09-16 Phillips L Van Appareil fixe a demeure pour l'alignement de protheses

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100918898B1 (ko) 2007-09-06 2009-09-23 선동윤 의족의 동적 중심 정렬용 구동장치

Also Published As

Publication number Publication date
GB9504862D0 (en) 1995-04-26
EP0759732A1 (fr) 1997-03-05
GB2298795A (en) 1996-09-18

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