WO2002022056A1 - Ankle joints - Google Patents

Ankle joints Download PDF

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Publication number
WO2002022056A1
WO2002022056A1 PCT/IS2000/000008 IS0000008W WO0222056A1 WO 2002022056 A1 WO2002022056 A1 WO 2002022056A1 IS 0000008 W IS0000008 W IS 0000008W WO 0222056 A1 WO0222056 A1 WO 0222056A1
Authority
WO
WIPO (PCT)
Prior art keywords
foot
requirement
ankle
function
hand
Prior art date
Application number
PCT/IS2000/000008
Other languages
French (fr)
Inventor
Bjarni Ellert Isleifsson
Original Assignee
Bjarni Ellert Isleifsson
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 Bjarni Ellert Isleifsson filed Critical Bjarni Ellert Isleifsson
Priority to AU2000273105A priority Critical patent/AU2000273105A1/en
Priority to PCT/IS2000/000008 priority patent/WO2002022056A1/en
Publication of WO2002022056A1 publication Critical patent/WO2002022056A1/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
    • A61F2/50—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
    • A61F2002/5072—Prostheses not implantable in the body having spring elements
    • A61F2002/5073—Helical springs, e.g. having at least one helical spring
    • A61F2002/5075—Multiple spring systems including two or more helical springs

Definitions

  • the invention is regarding method and equipment to simulate movement and function of ankle on prosthetic.
  • a prosthetic foot comprising of a heel height adjustement between the foot and the leg.
  • the front of the leg is attachable to the back of the adjustement pole which is attached to a spring, positioned in the foot. It is possible to adjust the force needed to bend the foot without dissasembeling it.
  • the spring is attached to two poles, one of them is situated by the ball of the foot and the other by the adjustement pole wich adjusts the heel height.
  • the pole by the ball of the foot adjusts the force of the spring.
  • a prosthetic ankle joint which has a double spring suspension and is defined in the following way, a rotating axle and an adjusting lever is placed in the foot one after the other. The adjusting lever is to adjust the force needed to bend the foot.
  • an ankle joint is described as an articulated ankle joint comprising of a foot plate for attachment to a foot prothesis, a leg plate for attachment to a leg prosthesis, a stem assembly connected between the plates for location over a heel portion of the foot prosthesis, the stem assembly including a spherical bearing for providing relative up and down and swivelling movements of the plates and rotational movements of the plates about the axes of the stem assembly, a first coil spring encircling the stem assembly, at least in part, for reacting between the plates and providing a degree of resistance to said swivelling movements, and a resistance assembly including a second coil spring connected between the plates forwardly of the stem assembly for providing resistance to both said swivelling and rotational movements of the plates.
  • my invention is not limited to using a spring it is also possible to use a coil spring and tension/stretching material. Also the way of possisioning the spring, coil spring and tension/stretching material is different in my ankle joint than on the ankles mentioned above. On my ankle joint it is possible to adjust the force needed to bend the ankle joint in either direction independent of each other because unlike the above mentioned akles my ankle joint has two rotating axles who are independent of each other.
  • the goal of this invention is to present a method and equipment to adjust the force that is needed for the ankle to bend making the eqiupment more comfortable for those who need it and that it will be adjustable according to each and every users requirement.
  • This adjective is reached by making the ankle adjustable with a spring, coil spring or tension/stretching material so that each user can adjust the force required to bend the ankle.
  • Picture 1. Shows the device when the heel touches the ground. Picture 2.: Shows the device when the leg is lifted off the ground. Picture 3.: Shows the ankle.
  • Picture 1 of 3 shows the device when the foot (1) treads on the ground. The rear of the foot (1) the heel touches the ground first. That produces a force beetween the shinbone (3) and foot (1). This force is adjustable with a spring, coil spring or tension/stretching material that is situated in the ankle (2).
  • Picture 2 of 3 shows the position of the device when the leg is lifted off the ground, and in the same manner as when the foot (1) treads on the ground the force between the foot (1) and the shinbone (3) is adjustable with a spring, coil spring or tension/stretching material that is situated in the ankle (2).
  • Picture 3 of 3 shows how the ankle (2) is structured.
  • the ankle (2) consists of two parts. The first is the part of the ankle (2) wich is a platfom (6a) and attaches to the shinbone (3). The second is the part of the ankle wich is a platform (6b) and attaches to the foot (1).
  • Each part contains joint socket (5). Inside the joint socket (5) are axles (9a,9b) attached to the platforms (6a,6b).
  • axles (9a,9b) springs (4a,4b) are affixed, wich are attached to the axels (9a,9b) on one hand and joint socket (5) on the other, the invention is not restricted by using a spring it is also possible to use a coil spring and tension/stretching material.
  • a bolt is loosened (8a, 8b) and the axels (9a,9b) are rotated inside the joint socket (5) with for example a hexagon

Landscapes

  • 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)

Abstract

The invention refers to a method and an equipment to simulate movement and function of an ankle consisting of two axles (9a, 9b) that are horizontallysituated and rotate independently of one another inside the joint socket (5).

Description

Ankle joints
The invention is regarding method and equipment to simulate movement and function of ankle on prosthetic.
Many types of ankles are known. What they have in common is that the adjustments have not been to every one's satisfaction, the function of the leg and foot that allowes the ankle to bend has not been adjustable enough.
In a German patent number 212213 a prosthetic foot is described comprising of a heel height adjustement between the foot and the leg. The front of the leg is attachable to the back of the adjustement pole which is attached to a spring, positioned in the foot. It is possible to adjust the force needed to bend the foot without dissasembeling it. The spring is attached to two poles, one of them is situated by the ball of the foot and the other by the adjustement pole wich adjusts the heel height. The pole by the ball of the foot adjusts the force of the spring.
In a German patent number 312498 a prosthetic ankle joint is described which has a double spring suspension and is defined in the following way, a rotating axle and an adjusting lever is placed in the foot one after the other. The adjusting lever is to adjust the force needed to bend the foot.
In a U.S. Patent number 4764172 an ankle joint is described as an articulated ankle joint comprising of a foot plate for attachment to a foot prothesis, a leg plate for attachment to a leg prosthesis, a stem assembly connected between the plates for location over a heel portion of the foot prosthesis, the stem assembly including a spherical bearing for providing relative up and down and swivelling movements of the plates and rotational movements of the plates about the axes of the stem assembly, a first coil spring encircling the stem assembly, at least in part, for reacting between the plates and providing a degree of resistance to said swivelling movements, and a resistance assembly including a second coil spring connected between the plates forwardly of the stem assembly for providing resistance to both said swivelling and rotational movements of the plates.
The difference between my invention and the above mentioned inventions are considerable for instance are the above mentioned ankles all depending on using only a spring, my invention is not limited to using a spring it is also possible to use a coil spring and tension/stretching material. Also the way of possisioning the spring, coil spring and tension/stretching material is different in my ankle joint than on the ankles mentioned above. On my ankle joint it is possible to adjust the force needed to bend the ankle joint in either direction independent of each other because unlike the above mentioned akles my ankle joint has two rotating axles who are independent of each other.
The goal of this invention is to present a method and equipment to adjust the force that is needed for the ankle to bend making the eqiupment more comfortable for those who need it and that it will be adjustable according to each and every users requirement.
This adjective is reached by making the ankle adjustable with a spring, coil spring or tension/stretching material so that each user can adjust the force required to bend the ankle.
The invention will be described further later on with regards to drawings. The development is here based on a spring being used to adjust the force needed to bend the ankle but the invention is not restricted by using a spring as mentioned above.
Picture 1.: Shows the device when the heel touches the ground. Picture 2.: Shows the device when the leg is lifted off the ground. Picture 3.: Shows the ankle.
Picture 1 of 3 shows the device when the foot (1) treads on the ground. The rear of the foot (1) the heel touches the ground first. That produces a force beetween the shinbone (3) and foot (1). This force is adjustable with a spring, coil spring or tension/stretching material that is situated in the ankle (2).
Picture 2 of 3 shows the position of the device when the leg is lifted off the ground, and in the same manner as when the foot (1) treads on the ground the force between the foot (1) and the shinbone (3) is adjustable with a spring, coil spring or tension/stretching material that is situated in the ankle (2).
Picture 3 of 3 shows how the ankle (2) is structured. The ankle (2) consists of two parts. The first is the part of the ankle (2) wich is a platfom (6a) and attaches to the shinbone (3). The second is the part of the ankle wich is a platform (6b) and attaches to the foot (1). Each part contains joint socket (5). Inside the joint socket (5) are axles (9a,9b) attached to the platforms (6a,6b). Around the axles (9a,9b) springs (4a,4b) are affixed, wich are attached to the axels (9a,9b) on one hand and joint socket (5) on the other, the invention is not restricted by using a spring it is also possible to use a coil spring and tension/stretching material. To adjust the force required to bend the ankle a bolt is loosened (8a, 8b) and the axels (9a,9b) are rotated inside the joint socket (5) with for example a hexagon
(10a,10b), there after the bolt (8a,8b) is again tightened against the platform (6a,6b) so that the platform (6a,6b) presses against the axels (9a,9b). The axles (9a,9b) are fastened to the platforms (6a, 6b) on one side with the bolts (8a,8b) and on the other side with the screws (7a,7b).
The above mentioned invention is not restricted to this development. For example it is possible to develop the invention with a coil spring, tension/stretching material or another method that produces a similar result.

Claims

Patent requirements
Requirement 1:
The invention is regarding method and equipment to simulate movement and function of ankle that is characterized by it consisting of two axles (9a,9b) that are horizontally situated and rotate independently of one another inside the joint socket (5).
Requirement 2:
Prosthetic ankle according to Requirement 1, is characterized by a spring (4a,4b) that is on the one hand connected to the axle (9a,9b) and on the other hand to the joint socket (5), its function is to adjust the force needed between foot (1) and shinbone (3).
Requirement 3:
Prosthetic ankle according to Requirement 1, is characterized by a coil spring (4a,4b) that is on the one hand connected to the axle (9a,9b) and on the other hand to the joint socket (5), its function is to adjust the force needed between foot (1) and shinbone (3).
Requirement 4:
Prosthetic ankle according to Requirement 1, is characterized by a tension/stretching material (4a,4b) that is on the one hand connected to the axle (9a,9b) and on the other hand to the joint socket (5), its function is to adjust the force needed between foot (1) and shinbone (3). Requirement 5:
Prosthetic ankle according to claims 1, 2, 3 and 4 is characterized by its assimilating movement and function of ankle joint (2) on prosthetic according to claims 1, 2, 3 and 4 , that is characterized by the force needed between the foot (1) and shinbone (3) is adjustable as mentioned in claims 2, 3 and 4.
Requirement 6:
Method to assimilate movement and function of ankle joint (2) on prosthetic which is characterized by the force needed for function between foot (1) and shinbone (3) is adjustable as mentioned in claims 2, 3 and 4.
Requirement 7:
Method according to claims 6 that is characterized by a spring (4a,4b) that is fastened on the one hand to the axles (9a,9b) and on the other hand to the joint socket (5), regulates the force needed for the function between foot (1) and shinbone (3).
Requirement 8:
Method according to claims 6 that is characterized by a coil spring (4a,4b) that is fastened on the one hand to the axles (9a,9b) and on the other hand to the joint socket (5), regulates the force needed for the function between foot (1) and shinbone (3).
Requirement 9:
Method according to claims 6 that is characterized by a tension/stretching material (4a,4b) that is fastened on the one hand to the axles (9a,9b) and on the other hand to the joint socket (5), regulates the force needed for the function between foot (1) and shinbone (3). Requirement 10:
Method according to claims 6, 7, 8 and 9 is characterized by the assimilation of movement and function of ankle joint (2) on prosthetic according to claims 1, 2, 3 and 4 which is charactarized by the force between foot (1) and shinbone (3) is adjustable as mentioned in claims 1, 2, 3 and 4.
PCT/IS2000/000008 2000-09-15 2000-09-15 Ankle joints WO2002022056A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2000273105A AU2000273105A1 (en) 2000-09-15 2000-09-15 Ankle joints
PCT/IS2000/000008 WO2002022056A1 (en) 2000-09-15 2000-09-15 Ankle joints

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IS2000/000008 WO2002022056A1 (en) 2000-09-15 2000-09-15 Ankle joints

Publications (1)

Publication Number Publication Date
WO2002022056A1 true WO2002022056A1 (en) 2002-03-21

Family

ID=11097502

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IS2000/000008 WO2002022056A1 (en) 2000-09-15 2000-09-15 Ankle joints

Country Status (2)

Country Link
AU (1) AU2000273105A1 (en)
WO (1) WO2002022056A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1549265A1 (en) * 2001-03-30 2005-07-06 Barry W. Townsend Prosthetic foot with tunable performance
ITBG20090020A1 (en) * 2009-05-04 2010-11-05 Roadrunnerfoot Engineering S R L PROSTHETIC FOOT TO WALK

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE312498C (en) *
US5019109A (en) * 1990-03-09 1991-05-28 Voisin Jerome P Multi-axial rotation system for artificial ankle
US5405411A (en) * 1992-04-01 1995-04-11 Mccoy; Allen J. Articulated ankle joint with inner and outer races for universal movement
US5913902A (en) * 1996-09-30 1999-06-22 Geible; Harry F. Artificial foot that enables Limp-free walking

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE312498C (en) *
US5019109A (en) * 1990-03-09 1991-05-28 Voisin Jerome P Multi-axial rotation system for artificial ankle
US5405411A (en) * 1992-04-01 1995-04-11 Mccoy; Allen J. Articulated ankle joint with inner and outer races for universal movement
US5913902A (en) * 1996-09-30 1999-06-22 Geible; Harry F. Artificial foot that enables Limp-free walking

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1549265A1 (en) * 2001-03-30 2005-07-06 Barry W. Townsend Prosthetic foot with tunable performance
EP1549265A4 (en) * 2001-03-30 2009-11-04 Barry W Townsend Prosthetic foot with tunable performance
ITBG20090020A1 (en) * 2009-05-04 2010-11-05 Roadrunnerfoot Engineering S R L PROSTHETIC FOOT TO WALK

Also Published As

Publication number Publication date
AU2000273105A1 (en) 2002-03-26

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