US1572319A - Mechanical ankle-movement device for artificial limbs - Google Patents

Mechanical ankle-movement device for artificial limbs Download PDF

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Publication number
US1572319A
US1572319A US42197A US4219725A US1572319A US 1572319 A US1572319 A US 1572319A US 42197 A US42197 A US 42197A US 4219725 A US4219725 A US 4219725A US 1572319 A US1572319 A US 1572319A
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Prior art keywords
pin
clevis
screws
movement device
artificial limbs
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Expired - Lifetime
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US42197A
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Alexander D Scully
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Individual
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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
    • A61F2/6607—Ankle joints
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32008—Plural distinct articulation axes
    • Y10T403/32041—Universal
    • Y10T403/32049—Non-coplanar axes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32549—Articulated members including limit means
    • Y10T403/32557—Articulated members including limit means for pivotal motion
    • Y10T403/32591—Opposed stops on one member
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32606—Pivoted
    • Y10T403/32861—T-pivot, e.g., wrist pin, etc.
    • Y10T403/32868—Floating pin

Definitions

  • My invention relates to mechanical an- .lde movement devices for artiticial limbs and has a particular reference to articulated devices adapted to connect the foot and calt portions otl an artificial limb.
  • the object et my invention is to pro- ⁇ 'idc a mechanically strong device tor the above purpose, with a limited degree of freedom of moven'ient in two directions, provided with eliicient means o'l lubrication ol the trictional surfaces ⁇ Y l -further provide my device vwith improved means of taking up any lost motion and looseness which may develop in pivoting ointson account of the wear oi' the trictional surfaces.
  • Fig. 1 is an elevation ot my device with the artificial toot shown with dotted lines
  • Fig. 2 is a sectional elevation taken from another angle.
  • My device consists ot a lower clevis 1 with a threaded extension 2 provided with a nut 3 and awasher 4l.
  • the clevis 1 is clamped to the artificial toot 5 with the nut 3 and is prevented from turning in its position by means et pins 6.
  • a tapered pin (l is litted into the clevis l and is prevented from turning ⁇ by means of a pin 7 which is litted partly in the sido plate ot the clevis and partly in the pin 6.
  • the larger end of the pin G is made oyliudrical in its portion which is litted in the clevis in order to 'fzficilitate its adjustment lengthwise.
  • '.l ⁇ he pin is made shorter than the dist-ance between the outer cheeks ol ⁇ the clevis, and the remaining space at the small end ot' the pin isk lilled with filling washers 8.
  • the pin is provided with threaded holes 9 at both ends :for screws 10. These screws are provided with flat heads 1l' of a larger diameter than the -pin 6 and have recesses 12 on the inside for the ends of the pin.
  • a connecting bleek .13 is fitted between the sel-iai no., 42,197.
  • the rotative movement ot the block 13 is limited by means ot the flat edges 1l and 15, bearing ao'ainst the inner surface 16 of the clevis.
  • rthe edge 141 is placed at a short distance from the surtacel, thereby allowing but a slight motion lin this direction, correspond ing to the straightening movement ot .the ioot in relation to the calli 17.
  • the front rdge 15 is raised at a higher angle, thereby allowing ⁇ a greater angle of lexure corrm spending to the angle ot tlexure during normal process ot walking.
  • Rubber or sin'iilar resilient bloclis 18 arc wedged between the toot 5 and the calli 17, so as to prevent any lost motion or chatter ing between those two members of the articial foot.
  • the upper portion of the block 13 is litted in an upper clevis 18 and is pivoted on a tapered pin 19 built similarly to the pin 6. It is made shorter than the distance between the outer surfaces ot the sides or" the clevis 18, andthe remaining space at the small end ot the pin is iilled with lilling adjusting washers 20.
  • the ends ot the pin 19 are provided with threaded holes for clamping and adjusting screws 21 with large flat heads 22. These heads have inside recesses 23 for the ends oli the pin 19.
  • fr key pin Qfl is ⁇ fitted partly in the pin at the large end and partly in the side of the clevis 18 in order to prevent the pin 19 from turning.
  • the holes 24. in the screw heads are provided for turning the screws (by means ot a Spanner wrench), similarly to holes 25 in the screws 10.
  • the clevis 18 is fitted into the calli' portion oit the artilicial foot and is clamped by means of a threaded extension 2,5 with .i nut Q6 and a washer 27. Pins 28 prevent the clevis from turning in its place.
  • the pins 6 and 18 have circular recesses or grooves 32 in their middle portions corresponding to the holel 29 in the body of the clevis 1S and the holes 33 and 311 in the connecting block 18. lVith this arrangement 110 the oil, when poured into the oil hole 31, will tlow to the pins 6 and 19 and will spread over all ot the friet-iena] surfaces. Longitudinal slots S5 in theblook 13 will help to spread the oil along the pins.
  • the upper portion oit the block 18 is provided with shoulders 35 placed at a small angle with the inside surface B7 ot the upper remedies,so as toalloW a limitedainount o't a sidewise tilting' movement for the ioot 5S in relation to the calt 1T, corresponding to the natural side bending of a human angle.
  • ot' mv device allows natural degree ot freedom in two directions for thearti'tieial foot, is eas;Y to luhrieate and can headjusted for wear so as to eliminate ang7 lost motion or looseness between the respective parts.
  • Another advantage o' my device is that it has two articulated joints at right angles with each other forming an universal joint, which allows Vthe saine degree of freedom to move in all directions as there exists in a natural human tootl claim as inv invention:
  • n a. mechanical ankle movement: device, the combination with a lower olevis, a threaded extension on said Clevis adapted to he attached to an artiiicial toot, an upper Clevis, a threaded extension on said upper remedies adaptedto he attaehedto an artiticial oalt'j a connecting' block ⁇ slidably .fitted into said Schwarzses, tapered pins forming pivoted conneetions between said olevises and said connectingl block, n'ieans to prevent said Schwarzses from rotation in said artitieial toot and Galt', and a plurality of resilient ineinhers wedged between said artiticial toot and said Calif.

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

Feb. 9 1926. 1,572,319 K A. D. SCULLY MECHANICAL Amm: MOVEMENT DEVICE FOR ARTIFIcIAL Lms Filed July a, 1925 ALEX/1 Non? D. Scl/1.1.x
A TTORNEY lll) Patented Feb. 9, 1925.
unirseY sra-rss ALEXANDER D. SCULLY, OF NEW YORK, N. Y.
MECHANCAL ANKLE-MGVEMENT DEVCE FOR ARTIFICIAL LIMBS.
Application 'iled July 8, 1925.
To It 1071.011@ 'it 'may concern.'
Be it known that l, ALEXANDER D. SoULLr, citizen oi" the United States, and resident o1" New York city, in the county oi' llew York and State ot New York, have invented certain new and useful improvements in Me cha-nical Anlde-lvloveinent -Devices for Arti licial Linibs, ot which the following is a specification.
My invention relates to mechanical an- .lde movement devices for artiticial limbs and has a particular reference to articulated devices adapted to connect the foot and calt portions otl an artificial limb.
The object et my invention is to pro- \'idc a mechanically strong device tor the above purpose, with a limited degree of freedom of moven'ient in two directions, provided with eliicient means o'l lubrication ol the trictional surfaces` Y l -further provide my device vwith improved means of taking up any lost motion and looseness which may develop in pivoting ointson account of the wear oi' the trictional surfaces.
My invention is more fully described in the accompanying specification and drawingl in which Fig. 1 is an elevation ot my device with the artificial toot shown with dotted lines, and Fig. 2 is a sectional elevation taken from another angle.
My device consists ot a lower clevis 1 with a threaded extension 2 provided with a nut 3 and awasher 4l. The clevis 1 is clamped to the artificial toot 5 with the nut 3 and is prevented from turning in its position by means et pins 6. A tapered pin (l is litted into the clevis l and is prevented from turning` by means of a pin 7 which is litted partly in the sido plate ot the clevis and partly in the pin 6.
The larger end of the pin G is made oyliudrical in its portion which is litted in the clevis in order to 'fzficilitate its adjustment lengthwise. '.l`he pin is made shorter than the dist-ance between the outer cheeks ol` the clevis, and the remaining space at the small end ot' the pin isk lilled with filling washers 8.
The pin is provided with threaded holes 9 at both ends :for screws 10. These screws are provided with flat heads 1l' of a larger diameter than the -pin 6 and have recesses 12 on the inside for the ends of the pin. A connecting bleek .13 is fitted between the sel-iai no., 42,197.
sides of the clevis 1 and is provided with a central tapered hole for the pin 6. The rotative movement ot the block 13 is limited by means ot the flat edges 1l and 15, bearing ao'ainst the inner surface 16 of the clevis. rthe edge 141 is placed at a short distance from the surtacel, thereby allowing but a slight motion lin this direction, correspond ing to the straightening movement ot .the ioot in relation to the calli 17. The front rdge 15 is raised at a higher angle, thereby allowing` a greater angle of lexure corrm spending to the angle ot tlexure during normal process ot walking.
Rubber or sin'iilar resilient bloclis 18 arc wedged between the toot 5 and the calli 17, so as to prevent any lost motion or chatter ing between those two members of the articial foot.
The upper portion of the block 13 is litted in an upper clevis 18 and is pivoted on a tapered pin 19 built similarly to the pin 6. It is made shorter than the distance between the outer surfaces ot the sides or" the clevis 18, andthe remaining space at the small end ot the pin is iilled with lilling adjusting washers 20. The ends ot the pin 19 are provided with threaded holes for clamping and adjusting screws 21 with large flat heads 22. These heads have inside recesses 23 for the ends oli the pin 19. fr key pin Qfl is `fitted partly in the pin at the large end and partly in the side of the clevis 18 in order to prevent the pin 19 from turning. The holes 24. in the screw heads are provided for turning the screws (by means ot a Spanner wrench), similarly to holes 25 in the screws 10.
The clevis 18 is fitted into the calli' portion oit the artilicial foot and is clamped by means of a threaded extension 2,5 with .i nut Q6 and a washer 27. Pins 28 prevent the clevis from turning in its place.
lu order lo provide a system ot lubrication for all trictioual surfaces the body of the upper clevis 18 is drilled through the central portion (hole with a side veut l0 registering with an oil hole 3l in the call' 17.
The pins 6 and 18 have circular recesses or grooves 32 in their middle portions corresponding to the holel 29 in the body of the clevis 1S and the holes 33 and 311 in the connecting block 18. lVith this arrangement 110 the oil, when poured into the oil hole 31, will tlow to the pins 6 and 19 and will spread over all ot the friet-iena] surfaces. Longitudinal slots S5 in theblook 13 will help to spread the oil along the pins.
The upper portion oit the block 18 is provided with shoulders 35 placed at a small angle with the inside surface B7 ot the upper elevis,so as toalloW a limitedainount o't a sidewise tilting' movement for the ioot 5S in relation to the calt 1T, corresponding to the natural side bending of a human angle.
In order to adjust the pins 5 and 1S for Wear, the screws lO and 2l are ren'ioved, other screws loosened. one or more adjustingl v-:ashers 8 or 2O removed, and the screws tightened againy beginning with the screws at the small ends, that is screws l() and 2l. rhe screws will he accordinglb drawn towards small ends, thereby fitting tighter in the connecting block 1 3.
the washerw removed ironi the small end, may he placed at the larger end in order to have the screws drz-i'nfn ti'glitl):Y against the pin and Washers. This will tend to prevent their loosening in service. y 1
Important advantages ot' mv device are that it allows natural degree ot freedom in two directions for thearti'tieial foot, is eas;Y to luhrieate and can headjusted for wear so as to eliminate ang7 lost motion or looseness between the respective parts.
Another advantage o' my device is that it has two articulated joints at right angles with each other forming an universal joint, which allows Vthe saine degree of freedom to move in all directions as there exists in a natural human tootl claim as inv invention:
n a. mechanical ankle movement: device, the combination with a lower olevis, a threaded extension on said Clevis adapted to he attached to an artiiicial toot, an upper Clevis, a threaded extension on said upper elevis adaptedto he attaehedto an artiticial oalt'j a connecting' block` slidably .fitted into said elevises, tapered pins forming pivoted conneetions between said olevises and said connectingl block, n'ieans to prevent said elevises from rotation in said artitieial toot and Galt', and a plurality of resilient ineinhers wedged between said artiticial toot and said Calif. l
Signed at New York, in the County oi' New York and Stat-e ot New York, JuneI ALEXANDER D. SCULLY
US42197A 1925-07-08 1925-07-08 Mechanical ankle-movement device for artificial limbs Expired - Lifetime US1572319A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3851337A (en) * 1972-08-01 1974-12-03 Ipos Ges Prothesen Und Orthopa Universally movable ankle joint for tube skeleton artificial limbs
WO1988006431A1 (en) * 1987-02-25 1988-09-07 Yngve Ljungblad Prosthesis with a joint between foot and lower leg

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3851337A (en) * 1972-08-01 1974-12-03 Ipos Ges Prothesen Und Orthopa Universally movable ankle joint for tube skeleton artificial limbs
WO1988006431A1 (en) * 1987-02-25 1988-09-07 Yngve Ljungblad Prosthesis with a joint between foot and lower leg

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