US1818893A - Artificial limb - Google Patents

Artificial limb Download PDF

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US1818893A
US1818893A US410795A US41079529A US1818893A US 1818893 A US1818893 A US 1818893A US 410795 A US410795 A US 410795A US 41079529 A US41079529 A US 41079529A US 1818893 A US1818893 A US 1818893A
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recess
foot
recesses
block
face
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US410795A
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Hoy Lyman Lorraine
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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
    • 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
    • A61F2002/30462—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements retained or tied with a rope, string, thread, wire or cable
    • 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
    • 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
    • A61F2220/0075—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable

Definitions

  • VThis invention relates to an artificial limb, more particularly to an ankle oint therefor, and has for its primary object to provide, in a manner as hereinafter set forth, an articial limb wherein the foot and leg portions may have relative movement therebetween which is substantially a simulation of such movement in a natural limb.
  • A' further object of the invention is to 1o provide an artificial limb wherein the foot and leg portions are resiliently connected together in a manner to provide for substantially the same ease and springiness in the movement of the artificial limb as in a natural limb.
  • a further object ofthe invention is to provide an artificial limb wherein the foot and leg portions are connected together in a manner to insure silent relative movement therebetween.
  • Figure 1 is a central vertical section through an artificial limb constructed in accordance with this invention.
  • Figure 2 is a vertical sectiontaken at a point indicated by the line 2-2 of Figure 1.
  • Figure 3 is a bottom ⁇ plan of the limb.
  • Figure 4l is an enlarged perspective'view of the block interposed between the footv and leg portions of the limb.
  • the numerals 1,' 2 and 3 respectivelyjdesignate thev upper leg'portion, the lower leg portion, and the foot portion of myfimprovedartiiicial limb.
  • the upper leg portion l is of'hollow construction and may be secured to the lower leg ⁇ portion 2 in any suitable manner.
  • a recess having a pair of side wallsl and a top wall 5.
  • the side walls 4 are slightly. concaved and the top wall 5 is also slightly concaved from side to yside and merges intothe side walls 4c.
  • From front to back the top wall 5 is of arcuate form and extends to the lower vface of the lower leg portion 2 at its forward and rearward extremities whereby the top wall 5 alsoprovides the Vfront and back walls of the recess.
  • a lining Y6 Disposed within the recess is a lining Y6 which snugly engages the walls thereof.
  • a recess having. a bottom wall 7, va front wall 8, and a rear wall 9.
  • the front and rear walls 8 and 9 are substantiallystraight and extend in continuation of the topwall 5 of the recess in the lower leg portion 2 when such leg portion and the foot portion 3 are in assembled relation.
  • the bottom wall 7 of the foot portion recess is convex in shape from front to back and arcuate in shape from side to side and extends at its sides to the upper face of the foot portionthereby also providing the side walls. of the recess.
  • the lower face of the lower leg Aportion 2 and upper face of thefoot portion 3 divergein a direction away from the recesses when theleg and foot portions are in assembled relation.
  • a block 10 Disposed in the above described lrecesses is a block 10 which is preferably formed of aluminum and the front, back and topl of which are continuous and conform in contourto the top wall 5 and the front and back ywalls 8 and 9 ofthe recesses., Adjacent the .top thereof, the sides of the block l0, as indicated at ll, conform in cont-our with the side walls 4 of the recess in the lower leg portion 2. The remaining side portions ofthe block 10 are concaved as indicated at l2 and merge into the bottom of the blockV which is also concaved as indicated at lf'from front to back.
  • the bottom of the block lO is arcuist ate to conform in contour with the bottom wall 7 of the recess in the upper face of the foot portion 3.
  • a lining 14 which snugly engages the walls of such recess.
  • the linings 6 and 14 are in direct contact with the block 10 and may be treated with graphite or other suitable lubricant.
  • a plurality of recesses Formed in the upper face of the lower leg portion 2 is a plurality of recesses, in the present instance four in number and designated by the numerals 15, 16, 17 and 18. Extending from the bottoms of the recesses 15, 16, 17 and 18 is a plurality of elongated openings 19 which extend through the lower face of the leg portion 2. EX- tending in longitudinal alignment with the openings 19 when the leg and foot portions of the limb are in assembled relation is a plurality of elongated openings 20, the lower ends of which open into a plurality of recesses formed in the lower face of the foot portion 3 and designated by the numerals 21, 22, 23 and 24 respectively.
  • the openings 19 gradually increase in diameter towards the lower face of the leg portion 2 and the openings 2O gradually increase in diameter towards the upper face of the foot portion 3.
  • a rod 25 which is threaded at its upper end as indicated at 26. rlhe upper end of each rod 25 is disposed within one of the recesses 15, 17 and 18 formed in the upper face of the lower leg portion 2 and is provided with a nut 27 which bears against a washer 28.
  • a coiled spring 29 is a coiled spring 29, the lower end of which abuts against the bottom wall of the recess and the upper end of which abuts against a resilient washer 30, preferably formed of rubber, which is interposed between the spring 29 and washer 28.V
  • the lower end 'ofeach of the rods 25 is provided with a head 32 which is preferably ⁇ formed with Ya slot 33 forthe accommodation of a tool, such as a screw driver.
  • Each head 32 is disposed within one of the recesses 21, 23 and 24 in the lower face of the foot portion 3 and interposed between the head and the top wall of such recess is a rigid washer 34 and a resilient washer 35,
  • Cneof the rods 25 is'disposed forwardly of the block 10, and one on each side thereof.
  • a rod 25 which extends through the aligned openings 19 and 20 opening into such recesses and thelower end of which Vis identical with the lower ends of the rods 25.
  • a nut 27 Threaded on the upper end of 'the'rod 25 is a nut 27 which is disposed within the recess 16.
  • a resilient sleeve 31 preferably formed of rubber, which seats on the bottom wall of the recess 16.
  • a washer 28 Interposed between the sleeve 31 and nut 27 is a washer 28.
  • the recesses in the upper face of the lower leg portion and in the lower face of the foot portion may be reversed, in which event the rods 25 and 25 would also be reversed so as to seat the springs 29 and sleeve 31 in the recesses within thefoot portion.
  • Anv artificial limb comprising, a leg portion formed in its lower face with a recess having a pair of substantially vertical side walls and further having a concave top wall merging at its sides with the side walls and extending to the lower face of said leg portion at its forward and rearward extremities, a foot portion formed in its upper face with a recess having substantially vertical front and back walls and further having a convex bottom wall merging with the front and back walls and extending at its sides in a concave plane to the upper face of said foot portion, an anti-friction lining for each of said recesses conforming in contour therewith, a block engaging said linings and conforming in contour therewith when said portions are in assembled relation, said block being movable in a lateral arc relative to one of said linings and movable in a forward and rearward arc relative to thev other of said linings, and resilient means for holding said portions in assembled relation.
  • An artificial limb comprising, a leg portion formed in its lower face with a recess having a top wall concave from front to rear, a foot portion formed in its upper face with a recess having a bottom wall concave from side to side, said bottom wall being convex from front to rear, an anti-frietion lining for each of said recesses conforming in contour therewith, a block engaging said linings and conforming in contour therewith when said portions are in assembled relation, said block being movable in a lateral, vertical arc relative to one of said linings and being movable in a forward and rearward, vertical arc relative to the other of said linings, and resilient means for holding said portions in assembled relation.
  • a rigid block for disposition between the leg and foot portions of an artificial limb said block having a continuous front, top and rear face of convex contour and further having a pair of substantially vertical side faces merging into said continuous face, said block further having a bottom face extending between said side faces in a convex plane and further extending between the end portions of said continuous face in a concave plane.

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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

Aug. 11, 1931. 1 L HOY ARTIFICIAL LIMB Patented Aug. 11., i 1931 Um'rlso,STATES LYMAN LORRAINE HOY, F TILLAMOOK, OREGON ARTIFCIAL LIMB Application led November 30, 1929. Serial N'o. 410,795.
VThis invention relates to an artificial limb, more particularly to an ankle oint therefor, and has for its primary object to provide, in a manner as hereinafter set forth, an articial limb wherein the foot and leg portions may have relative movement therebetween which is substantially a simulation of such movement in a natural limb.
A' further object of the invention is to 1o provide an artificial limb wherein the foot and leg portions are resiliently connected together in a manner to provide for substantially the same ease and springiness in the movement of the artificial limb as in a natural limb. v
A further object ofthe invention is to provide an artificial limb wherein the foot and leg portions are connected together in a manner to insure silent relative movement therebetween.
With the foregoing and. other objects in view, the' invention consists of the novel construction, combination and arrangement of parts as hereinafter more particularly described, and as illustrated in the accompanying drawings wherein is shown an embodiment of the invention, but` it is to be understood that the description and drawings'are to be taken as illustrative and thatthe invention is intended to be limited only by the scope of the claims hereunto appended.
In the accompanying drawings-in which like numerals are employed to designate like parts throughout the same: c
Figure 1 is a central vertical section through an artificial limb constructed in accordance with this invention. v
Figure 2 is a vertical sectiontaken at a point indicated by the line 2-2 of Figure 1.
Figure 3 is a bottom` plan of the limb.
Figure 4l is an enlarged perspective'view of the block interposed between the footv and leg portions of the limb. f
Referringto therdrawings in detail, the numerals 1,' 2 and 3 respectivelyjdesignate thev upper leg'portion, the lower leg portion, and the foot portion of myfimprovedartiiicial limb. Inthe embodiment shown herein the upper leg portion lis of'hollow construction and may be secured to the lower leg` portion 2 in any suitable manner.
Formed in the lower face of the lower leg portion 2 is a recess having a pair of side wallsl and a top wall 5. The side walls 4 are slightly. concaved and the top wall 5 is also slightly concaved from side to yside and merges intothe side walls 4c. From front to back the top wall 5 is of arcuate form and extends to the lower vface of the lower leg portion 2 at its forward and rearward extremities whereby the top wall 5 alsoprovides the Vfront and back walls of the recess. Disposed within the recess is a lining Y6 which snugly engages the walls thereof. c
Formed inthe upper faceV of the foot portion 3 is a recess having. a bottom wall 7, va front wall 8, and a rear wall 9. The front and rear walls 8 and 9 are substantiallystraight and extend in continuation of the topwall 5 of the recess in the lower leg portion 2 when such leg portion and the foot portion 3 are in assembled relation.
The bottom wall 7 of the foot portion recess is convex in shape from front to back and arcuate in shape from side to side and extends at its sides to the upper face of the foot portionthereby also providing the side walls. of the recess. As shown in Figures 1 andV 2, the lower face of the lower leg Aportion 2 and upper face of thefoot portion 3 divergein a direction away from the recesses when theleg and foot portions are in assembled relation.
Disposed in the above described lrecesses is a block 10 which is preferably formed of aluminum and the front, back and topl of which are continuous and conform in contourto the top wall 5 and the front and back ywalls 8 and 9 ofthe recesses., Adjacent the .top thereof, the sides of the block l0, as indicated at ll, conform in cont-our with the side walls 4 of the recess in the lower leg portion 2. The remaining side portions ofthe block 10 are concaved as indicated at l2 and merge into the bottom of the blockV which is also concaved as indicated at lf'from front to back. From side to side the bottom of the block lO is arcuist ate to conform in contour with the bottom wall 7 of the recess in the upper face of the foot portion 3. Interposed between the block and the recess inthe foot portion 3 is a lining 14 which snugly engages the walls of such recess. The linings 6 and 14 are in direct contact with the block 10 and may be treated with graphite or other suitable lubricant.
Formed in the upper face of the lower leg portion 2 is a plurality of recesses, in the present instance four in number and designated by the numerals 15, 16, 17 and 18. Extending from the bottoms of the recesses 15, 16, 17 and 18 is a plurality of elongated openings 19 which extend through the lower face of the leg portion 2. EX- tending in longitudinal alignment with the openings 19 when the leg and foot portions of the limb are in assembled relation is a plurality of elongated openings 20, the lower ends of which open into a plurality of recesses formed in the lower face of the foot portion 3 and designated by the numerals 21, 22, 23 and 24 respectively. The openings 19 gradually increase in diameter towards the lower face of the leg portion 2 and the openings 2O gradually increase in diameter towards the upper face of the foot portion 3. Associated with the recesses 15, 17, 18, 21, 23 and 24 and extending through each of the aligned openings 19 and 2O opening into such recesses is a rod 25 which is threaded at its upper end as indicated at 26. rlhe upper end of each rod 25 is disposed within one of the recesses 15, 17 and 18 formed in the upper face of the lower leg portion 2 and is provided with a nut 27 which bears against a washer 28. Encircling the rod 25 is a coiled spring 29, the lower end of which abuts against the bottom wall of the recess and the upper end of which abuts against a resilient washer 30, preferably formed of rubber, which is interposed between the spring 29 and washer 28.V The lower end 'ofeach of the rods 25 is provided with a head 32 which is preferably` formed with Ya slot 33 forthe accommodation of a tool, such as a screw driver. Each head 32 is disposed within one of the recesses 21, 23 and 24 in the lower face of the foot portion 3 and interposed between the head and the top wall of such recess is a rigid washer 34 and a resilient washer 35,
the latter of which is preferably formed of rubber.
Cneof the rods 25 is'disposed forwardly of the block 10, and one on each side thereof. l
Associated with the recesses 16 and 22 is a rod 25 which extends through the aligned openings 19 and 20 opening into such recesses and thelower end of which Vis identical with the lower ends of the rods 25. Threaded on the upper end of 'the'rod 25 is a nut 27 which is disposed within the recess 16. Encircling the rod 25 is a resilient sleeve 31, preferably formed of rubber, which seats on the bottom wall of the recess 16. Interposed between the sleeve 31 and nut 27 is a washer 28.
The springs 29and resilient sleeve 31 assembled on the rods l25 and 25 respectively resiliently hold the lower leg portion 2 and foot portion 3 in assembled relation and by tightening the nuts 27 and 27 the tension of the springs 29 and sleeve 31 may be regulated as desired. Owing to the shape of the lock 10 and of the recesses formed in the lower face of the lower leg portion 2 and in the upper face of the foot portion 3, the latter is freely movable relative to the lower leg portion 2 from side to side and from front to back. Due to the gradually increasing diameter of the openings 19 and 20Y towards the lower face of the leg portion 2 and the upper face of the foot portion 3 respectively, considerable lateral movement of the rods 25 may be had without coming in contact with the walls of the openings, thereby preventing the possibility of any noise from such movement. Due to the resilient washers 35 and 30, any possibility of noise is prevented from the longitudinal movement of the rods 25 or the springs 29.
It will be perceived that the peculiar `formation of the block 10 and of the recesses in the l foot and lower leg portions within which the block is seated provides the latter with a pair of right angularly disposed axes, one of which is superimposed above the other'as in a natural ankle joint. lVhile free Vlateral movement of the foot portion 3 with respect to the block, and free forward and rearward movement of the leg portion 2 with respect thereto is provided, a relatively large bearing surface between the block and each of the lower leg and foot portions is provided and any relative rotary movement between the foot and leg portions is prevented.
InA the event of an extremely low amputation, the recesses in the upper face of the lower leg portion and in the lower face of the foot portion may be reversed, in which event the rods 25 and 25 would also be reversed so as to seat the springs 29 and sleeve 31 in the recesses within thefoot portion.
It is thought that the many advantages of an artificial limb in accordance with this invention will be readily apparent, and although the preferred embodiment of the invention is as illustrated and described, it is to be understood that various changes in the size, shape and arrangement of parts may be resorted to, so long as such changes fall within the scope of the invention as defined in the appended claims.
What claim is A 1. Anv artificial limb comprising, a leg portion formed in its lower face with a recess having a pair of substantially vertical side walls and further having a concave top wall merging at its sides with the side walls and extending to the lower face of said leg portion at its forward and rearward extremities, a foot portion formed in its upper face with a recess having substantially vertical front and back walls and further having a convex bottom wall merging with the front and back walls and extending at its sides in a concave plane to the upper face of said foot portion, an anti-friction lining for each of said recesses conforming in contour therewith, a block engaging said linings and conforming in contour therewith when said portions are in assembled relation, said block being movable in a lateral arc relative to one of said linings and movable in a forward and rearward arc relative to thev other of said linings, and resilient means for holding said portions in assembled relation.
2. An artificial limb comprising, a leg portion formed in its lower face with a recess having a top wall concave from front to rear, a foot portion formed in its upper face with a recess having a bottom wall concave from side to side, said bottom wall being convex from front to rear, an anti-frietion lining for each of said recesses conforming in contour therewith, a block engaging said linings and conforming in contour therewith when said portions are in assembled relation, said block being movable in a lateral, vertical arc relative to one of said linings and being movable in a forward and rearward, vertical arc relative to the other of said linings, and resilient means for holding said portions in assembled relation.
8. A rigid block for disposition between the leg and foot portions of an artificial limb, said block having a continuous front, top and rear face of convex contour and further having a pair of substantially vertical side faces merging into said continuous face, said block further having a bottom face extending between said side faces in a convex plane and further extending between the end portions of said continuous face in a concave plane.
In testimony whereof, I affix my signature hereto. l
LYMAN LORRAINE HOY.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2451980A (en) * 1946-05-17 1948-10-19 Sr Starlin B Samons Artificial limb
DE3239959A1 (en) * 1982-10-28 1984-05-10 Heintz, Bruno, 7530 Pforzheim Ankle joint for leg prostheses

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2451980A (en) * 1946-05-17 1948-10-19 Sr Starlin B Samons Artificial limb
DE3239959A1 (en) * 1982-10-28 1984-05-10 Heintz, Bruno, 7530 Pforzheim Ankle joint for leg prostheses

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