WO2019203290A1 - Semelle pour pied artificiel de sport - Google Patents

Semelle pour pied artificiel de sport Download PDF

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Publication number
WO2019203290A1
WO2019203290A1 PCT/JP2019/016549 JP2019016549W WO2019203290A1 WO 2019203290 A1 WO2019203290 A1 WO 2019203290A1 JP 2019016549 W JP2019016549 W JP 2019016549W WO 2019203290 A1 WO2019203290 A1 WO 2019203290A1
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WO
WIPO (PCT)
Prior art keywords
sole
width direction
competition
foot
land
Prior art date
Application number
PCT/JP2019/016549
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English (en)
Japanese (ja)
Inventor
大太 糸井
耕平 佐橋
Original Assignee
株式会社ブリヂストン
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 株式会社ブリヂストン filed Critical 株式会社ブリヂストン
Priority to JP2020514428A priority Critical patent/JPWO2019203290A1/ja
Publication of WO2019203290A1 publication Critical patent/WO2019203290A1/fr

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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

Definitions

  • the present invention relates to a sole that is attached to a contact area of a prosthetic leg for competition, and more particularly to a sole for a prosthetic leg that suppresses slippage of the prosthetic leg during competition.
  • a prosthetic leg for competition (hereinafter also referred to as a prosthetic leg for competition or simply a prosthetic leg) has a leaf spring-like leg part extending to the toe side through the curved part, and the contact area extends in an arc shape from the toe to the curved part side.
  • a prosthetic leg having a leaf spring-like foot portion is provided with a sole that contacts the road surface on the bottom surface of the contact area.
  • Patent Document 1 exemplifies a sole that is attached to the lower surface of a curved plate spring-like prosthetic leg for competition, such as jogging or running. That is, Patent Document 1 describes a sole in which spikes are attached to the lower surface of a sole that contacts the road surface, and a sole in which a number of outsole portions each having a hexagonal ground surface are provided.
  • an object of the present invention is to provide a sole for a prosthetic leg having a high anti-slip performance.
  • the sole of the prosthetic leg for competition of the present invention is a contact of the prosthetic leg having a leaf spring shape extending toward the toe side through at least one curved part and extending in an arc shape from the toe to the curved part side.
  • a sole to be attached to an area the sole having a bottom surface shaped according to an extending shape of the contact area, the bottom surface having a land portion defined by a plurality of grooves, the grooves being the legs; It consists only of the width direction groove
  • the present invention it is possible to provide a sole for a prosthetic leg having a high anti-slip performance. By wearing this sole on the prosthetic leg for competition, there is an effect that the athlete's skill is exhibited.
  • FIG. 1 It is a side view of the artificial leg for competition with which the sole concerning a 1st embodiment of the present invention was equipped. It is a figure which shows the pattern of the sole bottom face of the sole of the artificial leg for competitions concerning 1st Embodiment. It is a figure which shows one shape of the width direction land part of FIG. It is a figure for explaining the operation
  • FIG. 1 is a side view of a prosthetic leg 1 for competition equipped with a sole 5 according to the first embodiment of the present invention.
  • the prosthetic leg 1 for competition has a leaf spring-like leg 2 and a sole 5 is attached to a contact area on the tip side.
  • the base end part of the foot part 2 is connected to a socket via an adapter, and a wearer wears a prosthetic leg by accommodating the stump of a wearer's leg in a socket. be able to.
  • As the adapter and the socket those corresponding to the stump position of the foot such as a thigh prosthesis and a crus prosthesis are used.
  • FIG. 1 shows the foot 2 and the sole 5 in an upright state of a wearer who wears the prosthetic leg 1 for competition.
  • the side where the foot 2 is connected to the adapter is referred to as the connection side
  • the side where the foot 2 contacts the road surface S is referred to as the ground side.
  • the toe T of the prosthetic leg 1 for competition refers to the foremost point where the foot 2 extends from the connection side and terminates.
  • a direction extending from the toe T in parallel to the road surface S is referred to as a foot front-rear direction Y.
  • the direction over the width direction of the foot 2 is referred to as the width direction W.
  • the foot portion 2 of the prosthetic leg 1 for competition has a shape extending in a plate shape toward the toe T via at least one curved portion, in the illustrated example, 1 curved portion 3.
  • the foot part 2 includes, in order from the connection side to the ground side, a straight part 2 a, a curved part 2 b that is convex toward the toe T side, a curved part 3 that is convex toward the rear side in the foot front-rear direction Y, The curved portion 2c and the grounding portion 4 extending to the toe T side in an arc shape protruding to the grounding side.
  • the material of the foot 2 is not limited, it is preferable to use carbon fiber reinforced plastic or the like from the viewpoint of strength and weight reduction.
  • the grounding portion 4 has, on the grounding side, a contact area 4s extending in an arc shape from the toe T toward the bending portion 3, and a sole 5 is attached to the contact area 4s.
  • the contact area 4s refers to the entire area that comes into contact with the road surface S when the wearer who wears the prosthetic leg 1 performs a straight traveling operation. In the state where the sole 5 is attached, the contact area 4s is the sole 5 It contacts with the road surface S via.
  • the sole 5 has a shape according to the extended shape of the contact area 4s.
  • the grounding side of the sole 5 is a bottom surface 5s.
  • the bottom surface 5s has a shape in which the arcs X1 and X2 are continuous from the toe T side to the bending portion 3 side.
  • the arc X1 and the arc X2 have different radii of curvature, but may have the same radius of curvature.
  • the bottom surface 5 s has a groove pattern composed of only the width direction grooves 20 extending in the width direction W.
  • channel 20 is extended along the width direction W, and both ends are opened to the width direction edge of 5 s of bottom faces.
  • the groove pattern consisting only of the widthwise grooves 20 means that no vertical grooves extending along the foot front-rear direction Y and opening at one or both of the front-rear end edges of the bottom surface 5s are provided. . Therefore, it is preferable that the width direction groove 20 extends in the width direction W of the foot, but an inclination of 30 to 55 ° with respect to the width direction W is allowed.
  • channel 20 opens to the width direction edge of 5 s of bottom faces, you may include what terminates in the bottom face 5s.
  • the edge component by the width direction groove 20 is unified in the direction along the width direction W. That is, when the wearer who wears the prosthetic leg 1 for competition performs a straight running operation, the ground contact portion of the bottom surface 5s with respect to the road surface S changes in the front-rear direction of the foot, so Along the edge function is required. Therefore, by not providing the vertical groove on the bottom surface 5s, the edge can be concentratedly arranged in the width direction W without being dispersed in the direction other than the width direction W, and the edge function along the width direction W can be maximized. did.
  • a plurality of width direction land portions 10 extending in the foot width direction are partitioned by a plurality of width direction grooves 20 on the bottom surface 5s.
  • the width direction land portion 10 is divided and formed similarly by the width direction groove 20 extending in a wave shape in the width direction W. .
  • the term “wave” refers to a sine wave, zigzag, unevenness, or the like that has substantially the same shape that changes phase with substantially the same period, and is preferably a sine wave or a zigzag shape having the same phase.
  • the land portion extends with a predetermined width along the wavy line P1 having such a wave shape.
  • the wavy shape in the width direction land portion 10 means that the toe protrudes from the position of the peak M ⁇ b> 1 and the valley V ⁇ b> 1 of the wavy line P ⁇ b> 1 to one side or the other side in the foot front-rear direction.
  • the edge component can be further increased, and the edge effect in both the foot front-rear direction Y and the width direction W can be enhanced.
  • the width-direction land portion 10 is line-symmetric with respect to a line segment extending in the foot front-rear direction Y through the wave peak M1 or valley V1 in one wave wavelength (wave peak-to-peak or valley-to-valley). It is preferable. As shown in FIG. 3, the width-direction land portion 10 is axisymmetric with respect to a line segment b1 extending in the foot front-rear direction Y through the mountain M1 of the wave line P1 in one wave wavelength ⁇ 1. The minute ⁇ 2 is line-symmetric with respect to a line segment b2 that extends in the foot front-rear direction Y through the valley V1. According to the said structure, even if an input direction shifts
  • the sole of the prosthetic leg for competition according to the second embodiment has the same basic configuration as that of the first embodiment, and is different from the first embodiment only in the groove pattern of the bottom surface 5s.
  • FIGS. 4A, 4B, 4C, and 4D are for explaining step by step the operation of the foot 2 and the ground contact form with the bottom surface 50s when the wearer wearing the competition artificial leg 1 travels straight ahead.
  • FIG. The upper part of each drawing is a side view of the foot 2 and the sole 5, and the lower part of each drawing is the transition of the ground contact form of the bottom surface 50s when the wearer wearing the competition prosthetic leg 1 performs a straight running operation. Is shown.
  • FIG. 4A shows a state in which the competition artificial leg 1 lifted by the wearer is lowered onto the road surface S and the entire weight is loaded on the competition artificial leg 1.
  • the contact area of the bottom surface 50s is in the vicinity of the center of the bottom surface, and is spaced from the curved part 3 and the toe T side in the front-rear direction. It is a free area.
  • FIG. 4B shows a state in which the wearer steps forward from the state of FIG. 4A while the full weight is loaded on the prosthetic leg 1 for competition.
  • the prosthetic leg for competition 1 is more curved than where it was grounded first. The grounding area has moved to the part 3 side.
  • FIG. 4C shows a state in which the wearer swings forward the opposite leg to the side on which the athletic prosthetic leg 1 is worn and starts to kick out the athletic prosthetic leg 1.
  • the game prosthetic leg 1 is grounded in a region on the toe T side of the bottom surface 50s from the region shown in FIGS. 4A and 4B.
  • FIG. 4D shows a state immediately before leaving the road surface S at the final stage where the wearer kicks out the prosthetic leg 1 for competition.
  • the grounding is performed in a region closer to the toe T than FIG. 4C.
  • each of the width direction land portions 11, 12 and 14 is a land portion extending with a predetermined width along the line segment P1 having a wave shape according to the above-described definition, like the width direction land portion 10.
  • the difference between the width direction land portions 11, 12 and 14 and the width direction land portion 10 is as described later, and other configurations follow the configuration of the width direction land portion 10 described above.
  • the area where the width direction land portions 10, 11 and 14 are arranged corresponds to the ground contact area shown in FIGS. 4A and 4B above, and the wearer first lands, and the total weight is on the prosthetic leg 1 for competition.
  • This is the area where the stepping action is performed in a loaded state. Therefore, it is important that the region is sufficiently gripped with the road surface S so that the balance of the entire body is maintained even if the wearer applies the total weight to the prosthetic leg 1 for competition. Therefore, by arranging the width direction land portion 10 excellent in the edge effect in the width direction W and the width direction land portions 11 and 14 similar to the width direction land portion 10, a high edge function is given to the region. In addition, a sufficient grip force for the road surface S is ensured, and a high slip resistance performance is given to the area.
  • the width direction land portion 11 is wider than the width direction land portion 10.
  • the ground contact area changes to the curved portion 3 side, that is, the direction opposite to the direction in which the wearer proceeds, from the first grounded area.
  • the movement of the upper body that the wearer tries to move forward and the direction of transition of the ground contact area are temporarily reversed, and the second half kick-out operation of the ground contact form shown in FIGS. 4C to 4D This is a stage where high driving force is required.
  • the rigidity of the arrangement region is increased and the stepping operation is performed. Realizes high propulsive force for smoothly connecting the kicker to the kicking motion.
  • the width direction land portion 12 is sequentially arranged on the toe T side of the width direction land portion 14.
  • the region in which the width direction land portion 12 is arranged is a region to be grounded when the kicking-out operation of the game artificial leg 1 shown in FIG. 4C is started.
  • the width direction land portion 12 is a land portion extending in a wave shape like the width direction land portion 10, and in particular, the land portion width which is the width in the normal direction of the wavy line is changed. That is, it has a wave shape in which the land width in the half wavelength of the wave (wave peak to valley or valley to peak) is wide and narrow. Specifically, as shown in FIG.
  • the width-direction land portion 12 has a half-wavelength portion ⁇ 3, that is, a land portion width w1 from the valley V2 of the wavy line P2 to the adjacent mountain M2.
  • the land part width w2 from the mountain M2 to the adjacent valley V2 has a wave shape in which the land part width w1 is relatively wide and the land part width w2 is narrow.
  • 1 ⁇ 2 wavelength that is, the land width w2 from the peak M2 of the wave line P2 to the adjacent valley V2
  • the land width w1 from the valley V2 to the adjacent mountain M2 is repeated.
  • the rigidity of the land portion can be increased and the wear resistance performance can be improved.
  • the ease of slipping caused by increasing the land portion width can be avoided by making the land portion width w2 on the other side smaller than that on the one side.
  • the ratio w1 / w2 of the land widths w1 and w2 is preferably 2.0 to 15. More preferably, the land widths w1 and w2 satisfy the following numerical ranges. 2.0mm ⁇ w1 ⁇ 4.0mm 0.3mm ⁇ w2 ⁇ 1.0mm
  • the sole 50s includes the sipe 13 in a region from the edge on the toe T side toward the curved portion 3 side.
  • the wearer swings forward the foot opposite to the side on which the prosthetic leg 1 is worn, and performs the kick-out operation of the prosthetic leg 1 for competition. It is an area.
  • This region is a region where wear is particularly likely to proceed because the grounding is made in order toward the toe T and the wearer touches and slides the road surface S on the bottom surface 50s. Therefore, in this region, it is important to improve the wear resistance and maintain the resistance to slipping during ground contact.
  • the constant region from the edge of the bottom surface 50s on the toe T side where the sipe 13 is formed is a region corresponding to the arc X1 continuous from the toe T with a constant radius of curvature in FIG.
  • the wearer wearing the competition prosthetic leg 1 performs the kicking-out operation, the wearer tends to come into contact with the ground at the end to cause more severe wear. Therefore, in this region, it is necessary to provide particularly high wear resistance. Therefore, the sipe 13 having a width smaller than that of the groove formed in another region is formed, and the edge component is distributed without impairing the rigidity. Therefore, the sole 5 can be protected from intense wear, and the service life of the foot 2 itself can be extended.
  • Comparative Example 1 is a sole having the pattern shown in FIG. In the pattern shown in FIG. 7, a plurality of land portions 15 are arranged.
  • Invention Example 1 is a sole having the pattern shown in FIG. 2 on the bottom surface
  • Invention Example 2 is a sole having the pattern shown in FIG. 5 on the bottom surface.
  • the drainage performance and the wear resistance performance indicate that the larger the index, the better the drainage performance and the wear resistance performance, with the index of Comparative Example 1 being 100.
  • the comparative example sole and the invention example sole manufactured as described above are mounted on the prosthetic leg for competition shown in FIG. 1, and the anti-slip performance and the anti-wear performance are evaluated.
  • a player with healthy feet on the left side wears a prosthetic leg for competition on the right side, and the overall appearance of the sole bottom after running 200 km on a public road is indexed.
  • the index of the comparative example 1 is set to 100, and it shows that a sole is excellent in abrasion resistance performance, so that a numerical value is large.
  • Comparative Example 1 and Inventive Example 2 a player with healthy feet on the left side wears a prosthetic leg for competition on the right side, and the appearance of the bottom surface of the sole is indexed after traveling 200 km on a public road.
  • the appearance of the bottom surface of the sole is indexed after a player with healthy legs on the left side wears a prosthetic leg for competition on the right side and travels 200 km on a public road.

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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)

Abstract

L'invention concerne une semelle, pour un pied artificiel de sport ayant une partie de pied en forme de ressort à lame s'étendant vers le côté orteil, qui est montée, par l'intermédiaire d'au moins une partie courbée, sur une région de contact avec le sol s'étendant en une forme d'arc allant de l'orteil au côté partie courbée. La semelle a une surface inférieure ayant une forme se conformant à la forme d'extension de la région de contact avec le sol. La surface inférieure a des parties d'appui démarquées par une pluralité de rainures. Les rainures sont constituées de rainures dans une direction de la largeur, qui s'étendent dans la direction de la largeur de la partie de pied.
PCT/JP2019/016549 2018-04-17 2019-04-17 Semelle pour pied artificiel de sport WO2019203290A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2020514428A JPWO2019203290A1 (ja) 2018-04-17 2019-04-17 競技用義足のソール

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018-079461 2018-04-17
JP2018079461 2018-04-17

Publications (1)

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WO2019203290A1 true WO2019203290A1 (fr) 2019-10-24

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PCT/JP2019/016549 WO2019203290A1 (fr) 2018-04-17 2019-04-17 Semelle pour pied artificiel de sport

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JP (1) JPWO2019203290A1 (fr)
WO (1) WO2019203290A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006003740A1 (fr) * 2004-07-01 2006-01-12 Nisshin Rubber Co., Ltd. Semelle de chaussure anti-glissement
US20150181976A1 (en) * 2013-12-27 2015-07-02 Nike, Inc. Sole structure for an article of footwear with abrasion resistant outsole and method of manufacturing same
US20170281371A1 (en) * 2016-03-31 2017-10-05 Nike, Inc. Prosthetic Blade Attachment System

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006003740A1 (fr) * 2004-07-01 2006-01-12 Nisshin Rubber Co., Ltd. Semelle de chaussure anti-glissement
US20150181976A1 (en) * 2013-12-27 2015-07-02 Nike, Inc. Sole structure for an article of footwear with abrasion resistant outsole and method of manufacturing same
US20170281371A1 (en) * 2016-03-31 2017-10-05 Nike, Inc. Prosthetic Blade Attachment System

Also Published As

Publication number Publication date
JPWO2019203290A1 (ja) 2021-04-22

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