WO1984000681A1 - Artificial foot - Google Patents

Artificial foot Download PDF

Info

Publication number
WO1984000681A1
WO1984000681A1 PCT/JP1983/000265 JP8300265W WO8400681A1 WO 1984000681 A1 WO1984000681 A1 WO 1984000681A1 JP 8300265 W JP8300265 W JP 8300265W WO 8400681 A1 WO8400681 A1 WO 8400681A1
Authority
WO
WIPO (PCT)
Prior art keywords
repulsion force
compressed
foot
compression
front elastic
Prior art date
Application number
PCT/JP1983/000265
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
Itsuro Takahama
Original Assignee
Itsuro Takahama
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 Itsuro Takahama filed Critical Itsuro Takahama
Publication of WO1984000681A1 publication Critical patent/WO1984000681A1/ja

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
    • 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
    • A61F2002/5007—Prostheses not implantable in the body having elastic means different from springs, e.g. including an elastomeric insert

Definitions

  • the anterior part is made of non-elastic material or has a very hard elastic body built in.
  • the bottom could be chosen at an appropriate sharp angle. Therefore, we have developed a prosthetic foot structure to achieve stability when standing upright and normal movement when walking.
  • Fig. 1 is an explanatory diagram of changes in the posture of the right body during one cycle of human walking
  • Fig. 2 is a diagram for explaining a prosthesis that can accurately approximate the motion of the ankle joint shown in Fig. 1.
  • Fig. 3 shows the relationship between the amount of compression of the elastic body and the reaction force shown in Figs. 2 and 5.
  • Figure 4 shows the position of the center of gravity when standing upright
  • FIG. 5 is a diagram showing an embodiment of the present invention.
  • two front elastic bodies are built in the foot part in front of the ankle joint.?, When standing upright, one of the front elastic bodies (4.1) is an elastic body holder (61). In a state where the elastic body is pressed slightly and compressed in advance.], The upward movement of the elastic body holding part is prevented by the stopper (7). In addition, the other front elastic body (4, There is a slight gap between 2) and the elastic retainer.

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)
PCT/JP1983/000265 1982-08-12 1983-08-12 Artificial foot WO1984000681A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14158382A JPS5932454A (ja) 1982-08-12 1982-08-12 義足

Publications (1)

Publication Number Publication Date
WO1984000681A1 true WO1984000681A1 (en) 1984-03-01

Family

ID=15295367

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1983/000265 WO1984000681A1 (en) 1982-08-12 1983-08-12 Artificial foot

Country Status (2)

Country Link
JP (1) JPS5932454A (enrdf_load_stackoverflow)
WO (1) WO1984000681A1 (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5112356A (en) * 1988-03-04 1992-05-12 Chas A. Blatchford & Sons Limited Lower limb prosthesis with means for restricting dorsi-flexion
US5116384A (en) * 1990-08-31 1992-05-26 Syncor, Ltd. Prosthetic foot
US7871443B2 (en) 2006-02-28 2011-01-18 Wilson Michael T Prosthetic foot with composite heel
US8118879B2 (en) 2008-03-14 2012-02-21 Wilson Michael T Prosthetic foot with flexible ankle portion

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6206934B1 (en) 1998-04-10 2001-03-27 Flex-Foot, Inc. Ankle block with spring inserts
US10500081B2 (en) * 2015-06-12 2019-12-10 Becker Orthopedic Appliance Company Triple action orthotic ankle joint and methods

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54133697U (enrdf_load_stackoverflow) * 1978-03-08 1979-09-17
JPS564008Y2 (enrdf_load_stackoverflow) * 1977-05-10 1981-01-29

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS564008Y2 (enrdf_load_stackoverflow) * 1977-05-10 1981-01-29
JPS54133697U (enrdf_load_stackoverflow) * 1978-03-08 1979-09-17

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5112356A (en) * 1988-03-04 1992-05-12 Chas A. Blatchford & Sons Limited Lower limb prosthesis with means for restricting dorsi-flexion
US5116384A (en) * 1990-08-31 1992-05-26 Syncor, Ltd. Prosthetic foot
US7871443B2 (en) 2006-02-28 2011-01-18 Wilson Michael T Prosthetic foot with composite heel
US8118879B2 (en) 2008-03-14 2012-02-21 Wilson Michael T Prosthetic foot with flexible ankle portion

Also Published As

Publication number Publication date
JPS6237986B2 (enrdf_load_stackoverflow) 1987-08-14
JPS5932454A (ja) 1984-02-21

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