US2183076A - Artificial ankle joint - Google Patents

Artificial ankle joint Download PDF

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Publication number
US2183076A
US2183076A US230263A US23026338A US2183076A US 2183076 A US2183076 A US 2183076A US 230263 A US230263 A US 230263A US 23026338 A US23026338 A US 23026338A US 2183076 A US2183076 A US 2183076A
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United States
Prior art keywords
foot
ankle joint
artificial
rubber
openings
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Expired - Lifetime
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US230263A
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William F Kaiser
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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
    • A61F2/50—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
    • A61F2/60—Artificial legs or feet or parts thereof
    • A61F2/66—Feet; Ankle joints
    • A61F2002/6614—Feet

Definitions

  • This invention relates to an artificial foot and more particularly to the ankle joint therein.
  • the principal object of this-invention is the provision of an improved ankle joint structure.
  • a further object of this invention is the provision of an improved ankle joint structure so formed that the entire weight on the artificial foot-is supported upon a rubber cushion at all times.
  • a still further object of this invention is the provision of an improved artificial foot, the various parts of which may be conveniently detached from one another and the various rubber portions thereof conveniently replaced when worn.
  • the artificial foot shown and described herein has been designed primarily to insure comfort to the-wearer.
  • the entire mechanical action of the ankle joint in the artificial foot has been positioned upon a thick rubber cushion in such manner that the entire Weight upon the. foot is carried directly upon the rubber cushion, this results in increased comfort to'the wearer and substantially longer life to the foot itself, as all the pull or jerk upon the joint structure is eliminated.
  • the provision of the rubber cushion mounting of the ankle joint also results in an improved lateral motion which in turn helps retain the stump of the wearer in proper fitting position in the socket of the artificial limb, the yielding action of the ankle joint thus tending to eliminate chafing and bruising and jarring on the stump.
  • Figure 1 is a cross sectional view of the artificial foot showing the ankle joint thereof, in
  • Figurez is a top plan view of the lower portion of the artificial foot, the top or shank portion thereof having been removed. Lines l-l on this figure indicate the cross section shown in Figure 1.
  • Figure 3 is a side elevation with parts broken relationto the foot I.
  • the invention comprises an artificial foot having an improved ankle joint construction.
  • the foot I being connected to the top or shank 2 by means of a swing bolt assembly comprising a bolt 3 the upper end 4 of which is threaded and adapted to receive a-flanged nut 5 which isin 1 turn positioned upon the end of the threaded bolt twithin a recess 6 in the shank 2.
  • the entire mechanical structure of the ankle joint and foot being cushioned directly upon yielding rubber in such manner that it is impossible for shock to reach the wearer through the foot.
  • an artificial limb comprising a foot and a leg portion; an ankle joint connecting the said foot and leg portions together, the said ankle joint comprising a vertical bolt, the upper end of which is adapted to be attached to the said leg portion, and having a pair of arms formed on the lower end thereof, openings formed in the said arms, a tubular bearing positioned in the said openings, a bearing block positioned on the said tubular bearing between the said arms, secondary tubular bearings formed at the sides of the said bearing block, bolts with openings formed in their upper ends positioned on the said 26 secondary tubular bearings, the said bolts adapted to be attached to the said foot portion, a rubber cushion crescent shaped in cross section, transversely positioned between the said swing bolt assembly, its tubular bearing and the said 30 foot, so that shock from the ground contact will not reach the wearer and will provide a controlled lateral action in the said ankle joint.
  • An artificial limb comprising a foot and a shank portion, an ankle joint connecting the said 35 foot and shank portions together, the said ankle joint being carried entirely upon a rubber cushion, and comprising a vertical bolt attached to the said shank portion, the lower end of the said vertical bolt being formed into a pair of arms having openings therein, a tubular bearing positioned through the said openings, 2.
  • An artificial limb, an ankle joint comprising a foot member, a pad of rubber occupying the axis of the ankle joint and extending transversely across the same; a swing bolt assembly positioned on the said pad of rubber; the said swing bolt assembly comprising a vertical bolt attached to the said shank portion; the lower end of the said vertical bolt being formed into a pair of arms having openings therein; a tubular bearing positioned between the said openings; a bearing block positioned upon the said tubular bearing between the said arms; secondary tubular bearings formed on the sides of the said bearing block and adapted to receive a pair of bolts having openings formed in their upper ends; the said bolts adapted to be attached to the said foot yieldingly; the entire mechanical assembly being positioned on the said pad of rubber so that shock will be absorbed thereby.

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

Description

Dec. 12, 1939. w. F. KAISER ARTIFICIAL ANKLE JOINT Filed Sept. 16, 1958 BY 'h/mv/ A TORNEY.
Patented Dec. 12, 1939 v units it ARTIFICEAL ANKLE JOINT William'F. Kaiser, Youngstown, Ohio, assignor to Joseph Spievak, Youngstown, Ohio Application September 16, 1938,'Serial No. 230,263
3 Claims.
This invention relates to an artificial foot and more particularly to the ankle joint therein. The principal object of this-invention is the provision of an improved ankle joint structure.
A further object of this invention is the provision of an improved ankle joint structure so formed that the entire weight on the artificial foot-is supported upon a rubber cushion at all times. I
A still further object of this invention is the provision of an improved artificial foot, the various parts of which may be conveniently detached from one another and the various rubber portions thereof conveniently replaced when worn.
The artificial foot shown and described herein has been designed primarily to insure comfort to the-wearer. In order to eliminate all shock normally transmitted to the stump of the wearer the entire mechanical action of the ankle joint in the artificial foot has been positioned upon a thick rubber cushion in such manner that the entire Weight upon the. foot is carried directly upon the rubber cushion, this results in increased comfort to'the wearer and substantially longer life to the foot itself, as all the pull or jerk upon the joint structure is eliminated.
The provision of the rubber cushion mounting of the ankle joint also results in an improved lateral motion which in turn helps retain the stump of the wearer in proper fitting position in the socket of the artificial limb, the yielding action of the ankle joint thus tending to eliminate chafing and bruising and jarring on the stump.
With the foregoing and other objects in View which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, can be made within the scope of what is claimed, without departing from the spirit of the invention.
The invention is illustrated in the accompanying drawing, wherein:
Figure 1 is a cross sectional view of the artificial foot showing the ankle joint thereof, in
' detail.
Figurez is a top plan view of the lower portion of the artificial foot, the top or shank portion thereof having been removed. Lines l-l on this figure indicate the cross section shown in Figure 1.
Figure 3 is a side elevation with parts broken relationto the foot I.
away showing a portion of the artificial foot adjacent to'the ankle joint thereof.
By referring to the drawing and Figures 1 and 2 in particular it will be seen that the invention comprises an artificial foot having an improved ankle joint construction.
The foot I being connected to the top or shank 2 by means of a swing bolt assembly comprising a bolt 3 the upper end 4 of which is threaded and adapted to receive a-flanged nut 5 which isin 1 turn positioned upon the end of the threaded bolt twithin a recess 6 in the shank 2.
The lower end of this threaded bolt 3 is formed into aipair of arms I, each of these arms I being provided with an opening adapted to receive a =15 tubular bearing 8; Positioned on this tubular bearing 8 and between the arms of the boltt there is a bearing block 9 which is provided at its sides with secondary tubular bearings l0. Positioned on each of these secondary bearings 20 Hi there are bolts j H which have circular openings formed in their upper ends thus adapting them to be positioned upon the secondary tubular bearings Ii! in such manner that they will pivot thereon.
In order that the swing bolt assembly may be positioned within the foot and yet not rest directly upon it a rubber cushion [2 has been provided and is so placed Within a recess in the foot l that the entire swing bolt assembly rests upon it. The bolts l l extending downwardly through openings in the foot I, and at their lower ends are threaded and provided with circular nuts It. In order to hold these threaded nuts IS in proper position a wire it may be threaded through openings therein and in effect key these circular nuts I3 in position. This is necessary because the swing bolt assembly resting upon a rubber cushion as it does will move in 40 It will be seen that the swing bolt assembly will provide universal action closely approximating that of a human ankle joint. In order to control the progressive and lateral action further use is made of rubber and particularly of a sponge rubber section I5 of the foot I.
Centrally positioned in the heel of the. foot l and extending through the sponge rubber section it there is a rubber block it which is adapted to extend upwardly into a recess H in the shank '2. This rubber block l6 helps keep the foot in correct position in relation to the shank 2 and provides a limit to the progressive motion permitted by the ankle joint. A rubber pad I8 is positioned in another recess [9 at the instep of the foot I and is adapted to limit the movement of the shank 2 in relation thereto.
It will be seen that I have provided an improved ankle joint structure in an artificial foot, 5 designed to provide a controlled lateral action as well as a controlled progressive action. The entire mechanical structure of the ankle joint and foot being cushioned directly upon yielding rubber in such manner that it is impossible for shock to reach the wearer through the foot.
What I claim is: 1. In an artificial limb comprising a foot and a leg portion; an ankle joint connecting the said foot and leg portions together, the said ankle joint comprising a vertical bolt, the upper end of which is adapted to be attached to the said leg portion, and having a pair of arms formed on the lower end thereof, openings formed in the said arms, a tubular bearing positioned in the said openings, a bearing block positioned on the said tubular bearing between the said arms, secondary tubular bearings formed at the sides of the said bearing block, bolts with openings formed in their upper ends positioned on the said 26 secondary tubular bearings, the said bolts adapted to be attached to the said foot portion, a rubber cushion crescent shaped in cross section, transversely positioned between the said swing bolt assembly, its tubular bearing and the said 30 foot, so that shock from the ground contact will not reach the wearer and will provide a controlled lateral action in the said ankle joint.
2. An artificial limb comprising a foot and a shank portion, an ankle joint connecting the said 35 foot and shank portions together, the said ankle joint being carried entirely upon a rubber cushion, and comprising a vertical bolt attached to the said shank portion, the lower end of the said vertical bolt being formed into a pair of arms having openings therein, a tubular bearing positioned through the said openings, 2. bearing block positioned upon the said tubular bearing between the said arms, the said tubular bearing and bearing block adapted to rest upon the said rubber cushion in such manner that lateral action of the ankle joint will cause the tubular bearing to compress the rubber cushion, secondary tubular bearings formed on the sides of the said bearing block and adapted to receive a pair of bolts having openings formed in their upper ends, the said bolts adapted to be attached to the said foot yieldingly so that shock will be absorbed by the said rubber cushion and not transmitted to the wearer.
3. An artificial limb, an ankle joint comprising a foot member, a pad of rubber occupying the axis of the ankle joint and extending transversely across the same; a swing bolt assembly positioned on the said pad of rubber; the said swing bolt assembly comprising a vertical bolt attached to the said shank portion; the lower end of the said vertical bolt being formed into a pair of arms having openings therein; a tubular bearing positioned between the said openings; a bearing block positioned upon the said tubular bearing between the said arms; secondary tubular bearings formed on the sides of the said bearing block and adapted to receive a pair of bolts having openings formed in their upper ends; the said bolts adapted to be attached to the said foot yieldingly; the entire mechanical assembly being positioned on the said pad of rubber so that shock will be absorbed thereby.
WILLIAM F. KAISER.
US230263A 1938-09-16 1938-09-16 Artificial ankle joint Expired - Lifetime US2183076A (en)

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Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2469937A (en) * 1946-10-04 1949-05-10 John M Tachar Artificial limb
US4204284A (en) * 1977-11-16 1980-05-27 Lord Corporation Joint prosthesis with contoured pin
US4229839A (en) * 1977-11-16 1980-10-28 Lord Corporation Joint prosthesis
US4231122A (en) * 1977-11-16 1980-11-04 Lord Corporation Knee joint prosthesis
EP0083155A1 (en) * 1981-12-07 1983-07-06 Dow Corning Corporation Shock absorbing stop for prosthetic devices
US4655778A (en) * 1985-08-12 1987-04-07 Harrington Arthritis Research Center Joint prosthesis
WO1988006431A1 (en) * 1987-02-25 1988-09-07 Yngve Ljungblad Prosthesis with a joint between foot and lower leg
US20050038524A1 (en) * 2003-08-15 2005-02-17 Jonsson Orn Ingvi Low profile prosthetic foot
US20060058893A1 (en) * 2004-05-28 2006-03-16 Clausen Arinbjorn V Method of measuring the performance of a prosthetic foot
US7279011B2 (en) 1998-04-10 2007-10-09 Phillips Van L Foot prosthesis having cushioned ankle
US7347877B2 (en) 2004-05-28 2008-03-25 össur hf Foot prosthesis with resilient multi-axial ankle
US8486156B2 (en) 2010-02-26 2013-07-16 össur hf Prosthetic foot with a curved split
USRE44476E1 (en) 2001-01-29 2013-09-03 Zimmer, Inc. Constrained prosthetic knee with rotating bearing
US8888857B2 (en) 2001-01-29 2014-11-18 Zimmer, Inc. Constrained prosthetic knee with rotating bearing
US8900326B2 (en) * 2008-08-18 2014-12-02 The Ohio Willow Wood Company Prosthetic foot
US8961618B2 (en) 2011-12-29 2015-02-24 össur hf Prosthetic foot with resilient heel
USD795433S1 (en) 2015-06-30 2017-08-22 Össur Iceland Ehf Prosthetic foot cover
USD797292S1 (en) 2014-06-30 2017-09-12 össur hf Prosthetic foot plate
US10821007B2 (en) 2016-12-01 2020-11-03 Össur Iceland Ehf Prosthetic feet having heel height adjustability
USD915596S1 (en) 2018-04-10 2021-04-06 Össur Iceland Ehf Prosthetic foot with tapered fasteners
US10980648B1 (en) 2017-09-15 2021-04-20 Össur Iceland Ehf Variable stiffness mechanism and limb support device incorporating the same
US11446164B1 (en) 2017-09-15 2022-09-20 Össur Iceland Ehf Variable stiffness mechanisms

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2469937A (en) * 1946-10-04 1949-05-10 John M Tachar Artificial limb
US4204284A (en) * 1977-11-16 1980-05-27 Lord Corporation Joint prosthesis with contoured pin
US4229839A (en) * 1977-11-16 1980-10-28 Lord Corporation Joint prosthesis
US4231122A (en) * 1977-11-16 1980-11-04 Lord Corporation Knee joint prosthesis
EP0083155A1 (en) * 1981-12-07 1983-07-06 Dow Corning Corporation Shock absorbing stop for prosthetic devices
US4655778A (en) * 1985-08-12 1987-04-07 Harrington Arthritis Research Center Joint prosthesis
WO1988006431A1 (en) * 1987-02-25 1988-09-07 Yngve Ljungblad Prosthesis with a joint between foot and lower leg
US7354456B2 (en) 1994-08-15 2008-04-08 Phillips Van L Foot prosthesis having cushioned ankle
US7879110B2 (en) 1998-04-10 2011-02-01 Ossur Hf Foot prosthesis having cushioned ankle
US7279011B2 (en) 1998-04-10 2007-10-09 Phillips Van L Foot prosthesis having cushioned ankle
US8888857B2 (en) 2001-01-29 2014-11-18 Zimmer, Inc. Constrained prosthetic knee with rotating bearing
USRE44476E1 (en) 2001-01-29 2013-09-03 Zimmer, Inc. Constrained prosthetic knee with rotating bearing
US9579220B2 (en) 2003-08-15 2017-02-28 össur hf Low profile prosthetic foot
US8007544B2 (en) 2003-08-15 2011-08-30 Ossur Hf Low profile prosthetic foot
US20050038524A1 (en) * 2003-08-15 2005-02-17 Jonsson Orn Ingvi Low profile prosthetic foot
US8858649B2 (en) 2003-08-15 2014-10-14 össur hf Low profile prosthetic foot
US8377146B2 (en) 2003-08-15 2013-02-19 Ossur Hf Low profile prosthetic foot
US8377144B2 (en) 2003-08-15 2013-02-19 Ossur Hf Low profile prosthetic foot
US7998221B2 (en) 2004-05-28 2011-08-16 össur hf Foot prosthesis with resilient multi-axial ankle
US8025699B2 (en) 2004-05-28 2011-09-27 össur hf Foot prosthesis with resilient multi-axial ankle
US9668887B2 (en) 2004-05-28 2017-06-06 össur hf Foot prosthesis with resilient multi-axial ankle
US7891258B2 (en) 2004-05-28 2011-02-22 össur hf Method of measuring the performance of a prosthetic foot
US7347877B2 (en) 2004-05-28 2008-03-25 össur hf Foot prosthesis with resilient multi-axial ankle
US7581454B2 (en) 2004-05-28 2009-09-01 össur hf Method of measuring the performance of a prosthetic foot
US20060058893A1 (en) * 2004-05-28 2006-03-16 Clausen Arinbjorn V Method of measuring the performance of a prosthetic foot
US20090293641A1 (en) * 2004-05-28 2009-12-03 Clausen Arinbjoern V Method of measuring the performance of a prosthetic foot
US9132022B2 (en) 2004-05-28 2015-09-15 össur hf Foot prosthesis with resilient multi-axial ankle
US7846213B2 (en) 2004-05-28 2010-12-07 össur hf. Foot prosthesis with resilient multi-axial ankle
US8900326B2 (en) * 2008-08-18 2014-12-02 The Ohio Willow Wood Company Prosthetic foot
US9351853B2 (en) 2008-08-18 2016-05-31 The Ohio Willow Wood Company Prosthetic foot
US8486156B2 (en) 2010-02-26 2013-07-16 össur hf Prosthetic foot with a curved split
US8961618B2 (en) 2011-12-29 2015-02-24 össur hf Prosthetic foot with resilient heel
USD797292S1 (en) 2014-06-30 2017-09-12 össur hf Prosthetic foot plate
US9999524B2 (en) 2014-06-30 2018-06-19 össur hf Prosthetic feet and foot covers
US11147692B2 (en) 2014-06-30 2021-10-19 Össur Iceland Ehf Prosthetic feet and foot covers
USD795433S1 (en) 2015-06-30 2017-08-22 Össur Iceland Ehf Prosthetic foot cover
US10821007B2 (en) 2016-12-01 2020-11-03 Össur Iceland Ehf Prosthetic feet having heel height adjustability
US11771572B2 (en) 2016-12-01 2023-10-03 Össur Iceland Ehf Prosthetic feet having heel height adjustability
US10980648B1 (en) 2017-09-15 2021-04-20 Össur Iceland Ehf Variable stiffness mechanism and limb support device incorporating the same
US11446164B1 (en) 2017-09-15 2022-09-20 Össur Iceland Ehf Variable stiffness mechanisms
USD915596S1 (en) 2018-04-10 2021-04-06 Össur Iceland Ehf Prosthetic foot with tapered fasteners

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