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US1704065A - Artificial foot - Google Patents

Artificial foot Download PDF

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Publication number
US1704065A
US1704065A US143936A US14393626A US1704065A US 1704065 A US1704065 A US 1704065A US 143936 A US143936 A US 143936A US 14393626 A US14393626 A US 14393626A US 1704065 A US1704065 A US 1704065A
Authority
US
United States
Prior art keywords
foot
artificial
toe
artificial foot
spring
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.)
Expired - Lifetime
Application number
US143936A
Inventor
Smith Harold Fleming
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US143936A priority Critical patent/US1704065A/en
Application granted granted Critical
Publication of US1704065A publication Critical patent/US1704065A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • A61F2/66—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
    • A61F2/02—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
    • A61F2/50—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
    • 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
    • A61F2002/6657—Feet having a plate-like or strip-like spring element, e.g. an energy-storing cantilever spring keel
    • 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

Definitions

  • An object of my invention is to provide an artificial foot in which a full stride can be taken.
  • Another object is to provide an artificial foot having a resilient toe portion.
  • a further object is to provide an artificial foot simulating the action of the natural foot.
  • FIG. 1 is a longitudinal, sectional view of an artificial foot embodying my invention.
  • Fig. 2 is a bottom plan view of the same on a reduced scale, and with the bottom pads removed.
  • the numeral 1 indicates an artificial foot in the upper part of which is provided the usual felt pad 2 and rubber block 3.
  • the leg portion t is secured to the foot 1 by countersunk bolts or leg screws 5.
  • a felt block 6 his within the recess 7 in the bottom of the foot 1 and is held in positionby the usual screw 8.
  • a felt toe portion 9 is provided on the foot 1, andmy invention resides in providing a resiliency for the felt toe.
  • a recess 10 1s formed in the toe 9 and in thewooden foot portion 1, and a laminated spring 11 is set therein.
  • This spring is secured at the rear by suitable means such as the screw 12 or the like-
  • the spring 11 is so arranged as that the tension of the spring 11 will have to be varied to suit the weight or stride of the wearer. This can be done by varying the number of leaves inthe laminated spring 11, or by varying the material of which the spring is made.
  • the wooden portion 1 comprises the ankle part of the foot and extends forwardly to about the instep.
  • the felt toe 9 thus forms only thefront end of the foot and by reason of the spring 11 a more natural action is obtained that is, there is no tendency for the foot to bend at the instep and shorten the stride.
  • An artificial foot comprising a main wooden portion forming the ankle and in-. step parts of the foot, a yieldable toe secured to said wooden portion, said toehaw ing a recess formed therein, a laminated spring secured to said wooden portion adjacent the forward end thereof, and extending into said recess, said laminated spring extending substantially the entire length of the tee, a fibrous block fitting into said recess and a covering extending around said toe and securedto the main wooden portion.

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)

Description

H. F. SMITH ARTIFICIAL FOOT March 5, 1929.
Filed Oct. 25, 1926 INVENTOR Patented Mar. 5 1929.
- urrn stares HAROLD FLEMING SMITH, or minimal, CALIFORNIA.
ARTIFICIAL room.
Application filed October25, 1926. SerialN'o. 143,936.
In artificial limbs heretofore in use, it was customary to provide a felt tip on'the end of the foot which would enable the wearer to bend that portion, simulating the action of the natural foot. This felt tip had no resilience and after it had been worn for a time, the toe portion would bend upwardly resulting in a marked shortening of the stride; that is, the stride would end at a point corresponding to the ball of the foot. This resulted in limp or a peculiar stride for the wearer of the limb.
An object of my invention is to provide an artificial foot in which a full stride can be taken.
Another object is to provide an artificial foot having a resilient toe portion.
A further object is to provide an artificial foot simulating the action of the natural foot.
Other objects, advantages and features of invention may appear from the accompanying drawing, the subjoined, detailed description, the appended claim, or in the use of my device.
1n the drawing I Fig. 1 is a longitudinal, sectional view of an artificial foot embodying my invention.
Fig. 2 is a bottom plan view of the same on a reduced scale, and with the bottom pads removed.
Referring more particularly to the draw The numeral 1 indicates an artificial foot in the upper part of which is provided the usual felt pad 2 and rubber block 3. The leg portion t is secured to the foot 1 by countersunk bolts or leg screws 5. A felt block 6 his within the recess 7 in the bottom of the foot 1 and is held in positionby the usual screw 8.
A felt toe portion 9 is provided on the foot 1, andmy invention resides in providing a resiliency for the felt toe. A recess 10 1s formed in the toe 9 and in thewooden foot portion 1, and a laminated spring 11 is set therein. This spring is secured at the rear by suitable means such as the screw 12 or the like- The spring 11 is so arranged as that the tension of the spring 11 will have to be varied to suit the weight or stride of the wearer. This can be done by varying the number of leaves inthe laminated spring 11, or by varying the material of which the spring is made.
The wooden portion 1 comprises the ankle part of the foot and extends forwardly to about the instep. The felt toe 9 thus forms only thefront end of the foot and by reason of the spring 11 a more natural action is obtained that is, there is no tendency for the foot to bend at the instep and shorten the stride. i
Having'described my invention, I claim:
An artificial foot comprising a main wooden portion forming the ankle and in-. step parts of the foot, a yieldable toe secured to said wooden portion, said toehaw ing a recess formed therein, a laminated spring secured to said wooden portion adjacent the forward end thereof, and extending into said recess, said laminated spring extending substantially the entire length of the tee, a fibrous block fitting into said recess and a covering extending around said toe and securedto the main wooden portion.
HAROLD FLEMING SMITH.
US143936A 1926-10-25 1926-10-25 Artificial foot Expired - Lifetime US1704065A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US143936A US1704065A (en) 1926-10-25 1926-10-25 Artificial foot

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US143936A US1704065A (en) 1926-10-25 1926-10-25 Artificial foot

Publications (1)

Publication Number Publication Date
US1704065A true US1704065A (en) 1929-03-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
US143936A Expired - Lifetime US1704065A (en) 1926-10-25 1926-10-25 Artificial foot

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3484871A (en) * 1968-12-02 1969-12-23 John L Orange Artificial foot
US3833941A (en) * 1973-02-28 1974-09-10 Wagner S Orthopedic Supply Co Molded sach foot
US20040162623A1 (en) * 1998-04-10 2004-08-19 Phillips Van L. Foot prosthesis having cushioned ankle

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3484871A (en) * 1968-12-02 1969-12-23 John L Orange Artificial foot
US3833941A (en) * 1973-02-28 1974-09-10 Wagner S Orthopedic Supply Co Molded sach foot
US20050234563A1 (en) * 1994-08-15 2005-10-20 Phillips Van L Foot prosthesis having cushioned ankle
US7354456B2 (en) 1994-08-15 2008-04-08 Phillips Van L Foot prosthesis having cushioned ankle
US20040162623A1 (en) * 1998-04-10 2004-08-19 Phillips Van L. Foot prosthesis having cushioned ankle
US7279011B2 (en) 1998-04-10 2007-10-09 Phillips Van L Foot prosthesis having cushioned ankle
US20100106260A1 (en) * 1998-04-10 2010-04-29 Phillips Van L Foot prosthesis having cushioned ankle
US7879110B2 (en) 1998-04-10 2011-02-01 Ossur Hf Foot prosthesis having cushioned ankle

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