WO2020022275A1 - Semelle pour prothèse de jambe sportive - Google Patents

Semelle pour prothèse de jambe sportive Download PDF

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Publication number
WO2020022275A1
WO2020022275A1 PCT/JP2019/028687 JP2019028687W WO2020022275A1 WO 2020022275 A1 WO2020022275 A1 WO 2020022275A1 JP 2019028687 W JP2019028687 W JP 2019028687W WO 2020022275 A1 WO2020022275 A1 WO 2020022275A1
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Prior art keywords
blocks
sole
illustrated example
row
width direction
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PCT/JP2019/028687
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English (en)
Japanese (ja)
Inventor
大太 糸井
耕平 佐橋
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株式会社ブリヂストン
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Priority to JP2020532386A priority Critical patent/JPWO2020022275A1/ja
Publication of WO2020022275A1 publication Critical patent/WO2020022275A1/fr

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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

Definitions

  • the present invention relates to a sole for a sports prosthesis, which is attached to an area where a sports prosthesis is in contact.
  • a sole that comes into contact with a road surface is attached to a lower surface of a contact area of a prosthetic leg for competition (hereinafter, also referred to as a prosthetic leg or simply a prosthetic leg).
  • Patent Literature 1 proposes various soles that are attached to the lower surface of a curved leaf spring-shaped prosthetic limb according to a sport type. Specifically, Patent Literature 1 describes a sole in which a spike is attached to a bottom surface of a sole that contacts a road surface.
  • Patent Literature 1 did not have sufficient wear resistance.
  • an object of the present invention is to provide a sole for a sports prosthesis with improved abrasion resistance.
  • the gist configuration of the present invention is as follows.
  • the athletic prosthetic sole of the present invention has at least a part of the bottom surface, a plurality of blocks that are defined by grooves and have a polygonal shape of a hexagon or more,
  • the shortest distance between two blocks adjacent in the first direction among the plurality of blocks is d1
  • the maximum length of the longer one of the two adjacent blocks is the maximum length.
  • Is L the relational expression: d1 / L ⁇ 0.06 Is satisfied.
  • the “maximum length of the block” refers to the maximum length when a distance between any two points on the outline of the block is measured in plan view.
  • the athletic prosthetic sole according to an embodiment of the present invention is not particularly limited, but has, for example, a top surface and a bottom surface having a thickness of 1.0 to 10.0 mm (preferably 2.0 to 3.5 mm). It has a sheet-like shape.
  • the sole of this embodiment has the top surface attached to the contact area of the artificial prosthesis, while the bottom surface is in contact with the road surface.
  • the type of athletic prosthesis to be worn is not particularly limited, and can be worn to any known type. The attachment can be performed by, for example, bonding with an adhesive or the like. An example of the prosthetic leg will be described later.
  • the material and the like of the sole are not particularly limited, and a commonly used rubber or the like can be used.
  • FIG. 1 is a developed view showing a pattern of a bottom surface 10 of a sole for a sports prosthesis according to an embodiment of the present invention.
  • FIG. 1 shows a part of the bottom surface 10 of the sole.
  • the sole according to the present embodiment includes a plurality of blocks that are defined by grooves 11 in at least a part of the bottom surface 10 (all regions in the illustrated example) and have a polygonal shape having a hexagonal shape or more in plan view. 12.
  • a pattern for example, as shown in FIG. 1 is formed on the entire bottom surface 10.
  • the sole for sports prosthesis of the present embodiment is attached to the artificial prosthesis via the intermediate layer (cushion), it is preferable that the thickness and material of the intermediate layer (cushion) be uniform.
  • all the blocks 12 have a polygonal shape with a planar shape of hexagon or more.
  • some of the blocks 12 may have a polygonal shape having a hexagonal shape or more.
  • the block 12 in a part of the region in the front-rear direction (the direction from the toe side to the heel side) of the sole may have a polygonal shape of a hexagon or more in plan view, and / or
  • the block 12 in a part of the region in the width direction (the direction orthogonal to the front-rear direction in plan view) may have a polygonal shape with a planar shape of hexagon or more.
  • some of the blocks 12 may have a planar shape of a heptagon, a octagon, or a polygon having more vertices. Accordingly, in some other regions of the bottom surface 10 of the sole, the block 12 may have a polygonal shape having a pentagonal shape or less, or may have a planar shape other than the polygonal shape.
  • the plurality of blocks 12 each having a polygonal shape having a hexagonal shape or more in a planar shape include two blocks 12 adjacent to each other in a first direction and having a second shape different from the first direction. Also in the direction, the two blocks 12 are adjacent to each other. That is, the plurality of blocks 12 form a row in a direction (first direction) inclined with respect to the front-rear direction of the sole, and the row forms a plurality of rows (10 rows in the drawing) in the second direction. ing. Two blocks adjacent in the first direction each have a first side wall 12c (a polygonal side in plan view) extending substantially parallel to each other.
  • a part (particularly, one side in the front-rear direction (toe side in the illustrated example)) of the first side wall 12c is a side wall having a maximum length of each of two blocks adjacent in the first direction. It is. Therefore, in this example, the plurality of blocks 12 have at least one row (10 rows in the drawing) arranged in a direction substantially orthogonal to the direction in which the first side wall 12c extends. In other words, in the row, the plurality of blocks 12 are arranged in a direction substantially perpendicular to the extending direction of the first side wall 12c having the maximum length of the block 12.
  • the extending direction of the first side wall 12c having the maximum length of each block 12 is not particularly limited, and may be, for example, a direction inclined by 0 ° to 45 ° with respect to the longitudinal direction of the sole. Further, in the embodiment shown in FIG. 1, the above-mentioned row has a plurality of rows (10 rows in the drawing), and two (a large number of) blocks 12 adjacent to each other between rows adjacent in the second direction are substantially parallel to each other. , Each having a second side wall 12d different from the first side wall 12c.
  • a step-like (that is, having a portion having a different height) block 12 b is provided on a part of the bottom surface 10. That is, in the embodiment shown in FIG. 1, the block 12 formed on the bottom surface 10 of the sole is composed of a block 12a having a substantially constant height and a step-shaped block 12b.
  • all the blocks 12 are constituted by blocks 12a having a substantially constant height.
  • all the blocks 12 are configured by step-like blocks 12b.
  • the block height (depth of the groove 11) h1 (mm) of the block 12a having a substantially constant height is not particularly limited, but is preferably 1.0 to 7.0 mm, and is preferably 2.0 to 7.0 mm. It is more preferably 3.5 mm, and even more preferably 2.4 mm to 3.5 mm.
  • the height of the entire block of the stepped block 12b is h1 (mm) and the height of the highest step having the top of the block 12b is h2 (mm), for example, as shown in FIG.
  • h1 is 1.0 to 7.0 mm
  • h2 is 0.5 to 2.5 mm
  • h1 is 2.0 to 3.5 mm
  • h2 is 0.
  • it is set to be 0.7 to 1.5 mm
  • h1 is set to 2.4 mm to 3.5 mm
  • h2 is set to 1.2 mm to 1.5 mm.
  • the height of the block at the highest step is h2
  • h1 is 1.0 to 7.0 mm
  • h2 is 0.
  • h1 is 2.0 to 3.5 mm
  • h2 is more preferably 0.7 to 1.5 mm
  • h1 is 2.4 to 3.5 mm
  • h2 is 1 to 2.5 mm. More preferably, the thickness is set to 0.2 mm to 1.5 mm.
  • the step-like block 12b has two steps, and the planar shape of the entire block 12b is a polygonal shape of a hexagon or more as described above, but the planar shape of the highest step is a plan view.
  • portions 12e six portions in the illustrated example
  • the interval (for example, the shortest distance) between two adjacent blocks 12 increases from one side in the width direction (outside in the width direction in the illustrated example) to the other side in the width direction (inside in the width direction in the illustrated example). It has a place.
  • a portion where the interval (for example, the shortest distance) between two adjacent blocks 12 is small is also included, but in each row, from one side in the width direction (outside in the width direction in the illustrated example) in the width direction.
  • the interval (for example, the shortest distance) between two adjacent blocks may gradually increase toward the other side (in the illustrated example, in the width direction).
  • the interval (for example, the shortest distance) between two adjacent blocks 12 on one side in the width direction (the outer side in the width direction in the illustrated example) is two adjacent blocks on the other side in the width direction (the inner side in the width direction in the illustrated example). Twelve intervals (for example, the shortest distance) may be used. Further, each row has a portion where the area of the block 12 in plan view decreases from one side in the width direction (outside in the width direction in the illustrated example) to (inside in the width direction in the illustrated example).
  • the area of the block 12 in plan view increases from one side in the width direction (outside in the width direction in the illustrated example) to the other side in the width direction (inside in the width direction in the illustrated example).
  • the area of the block 12 in plan view may gradually decrease from one side in the width direction (outside in the width direction in the illustrated example) to the other side in the width direction (inside in the width direction in the illustrated example).
  • the area in plan view of the block 12 on one side in the width direction (outside in the width direction in the illustrated example) is larger than the area in plan view on the block 12 on the other side in the width direction (inside in the width direction in the example shown). You may make it.
  • the ratio (negative rate) of the area of the groove 11 to the area of the sole in a plan view is from one side in the width direction (outside in the width direction in the illustrated example) to the other side in the width direction (inside in the width direction in the illustrated example). And it is increasing gradually.
  • the step-like blocks 12b are arranged from one side in the width direction (outside in the width direction in the illustrated example) to the other side in the width direction (inside in the width direction in the example). There is a portion where the ratio of the area of the highest step in plan view to the area in plan view is small. Specifically, there is a portion where the width of the protruding portion 12e becomes smaller from one side in the width direction (outside in the width direction in the illustrated example) to the other side in the width direction (inside in the width direction in the illustrated example).
  • the ratio (or the width of the protruding portion 12e) may be gradually reduced.
  • the ratio (or the width of the protruding portion 12e) in the block 12 on the one side in the width direction (the outer side in the width direction in the illustrated example) is the block 12 on the other side in the width direction (the inner side in the width direction in the illustrated example).
  • one side in the width direction is set to the outside in the width direction.
  • one side in the width direction may be set to the inside in the width direction.
  • the interval between the rows (the groove width of the groove 11 that partitions them (for example, The maximum value of the groove width) is increasing gradually. Therefore, in plan view, the ratio of the area of the groove 11 to the area of the sole (negative rate) is from one side (toe side in the illustrated example) of the sole in the front-rear direction to the other side (heel side in the illustrated example). It gradually increases toward the row.
  • the area of the block 12 in a plan view (for example, the average value in the row) from the row on the one side (toe side in the illustrated example) to the row on the other side (heel side in the illustrated example) of the sole in the front-rear direction. Is gradually decreasing.
  • the width direction from the row on one side (toe side in the illustrated example) of the sole in the front-rear direction toward the row on the other side (heel side in the illustrated example) in the width direction is gradually decreasing.
  • the sole projects from the row on one side (toe side in the illustrated example) in the front-rear direction toward the row on the other side (heel side in the illustrated example).
  • the width of the portion 12e (for example, the average value in the column) is substantially gradually reduced.
  • the groove 11 is formed by connecting a plurality of grooves extending in a zigzag shape in the front-rear direction of the sole by a plurality of grooves extending substantially in the width direction. From another point of view, the groove 11 is formed by connecting a plurality of grooves extending in a substantially zigzag manner in a first direction by a plurality of grooves extending in a substantially second direction. From a different viewpoint, the groove 11 is formed by connecting a plurality of grooves extending in a zigzag manner in a substantially second direction by a plurality of grooves extending in a substantially first direction.
  • the first direction in this example, the direction substantially orthogonal to the direction in which the first side wall 12c having the maximum length extends
  • d1 / L ⁇ 0.06 Meets in a row positioned in a partial area on one side (toe side in the illustrated example) of the sole in the front-rear direction, a part or all of the blocks 12 in the row are represented by the above relational expression. d1 / L ⁇ 0.06 Meets.
  • the shortest distance d1 is preferably 2 mm or less, more preferably 1.5 mm or less, and even more preferably 1.0 mm or less, from the viewpoint of improving wear resistance.
  • the shortest distance d1 is preferably at least 0.2 mm, more preferably at least 0.5 mm, even more preferably at least 0.7 mm, from the viewpoint of ensuring drainage.
  • the shortest distance between the second side walls 12d is d2 (mm)
  • the shortest distance d2 (mm) is one side in the front-rear direction (toe side in the illustrated example) of the plurality of rows.
  • the bottom surface 10 has a plurality of blocks 12 which are partitioned by the grooves 11 and have a polygonal shape having a hexagonal shape or more. Since the relational expression, d1 / L ⁇ 0.06, is satisfied, the shortest distance d1 between the blocks 12 adjacent in the first direction is shorter than the size (and, therefore, rigidity) of the blocks 12. Therefore, when the blocks 12 flex and bulge at the time of touching the ground, the adjacent blocks 12 can support each other, and the sliding of the blocks 12 can be suppressed, and the wear resistance can be improved.
  • two blocks 12 adjacent in the first direction each have a first side wall 12c extending substantially parallel to each other, and the plurality of blocks 12 are formed by extending the first side wall 12c. Since there is at least one row (ten rows in the drawing) arranged in a direction substantially perpendicular to the existing direction, the shortest distance d1 is constant over the entire portion extending substantially in parallel. The above-mentioned supporting effect can be obtained effectively.
  • the first side wall 12c is the side wall having the maximum length of each of the two blocks 12 adjacent in the first direction. The effect of supporting each other can be obtained effectively.
  • a plurality of rows (10 rows in the drawing) are provided, and two blocks 12 adjacent to each other between rows adjacent in the second direction extend in a second Since each of the side walls 12d is provided, an effect of supporting the blocks 12 adjacent to each other in the front-rear direction of the sole can be obtained.
  • the first direction is a direction inclined with respect to the front-back direction of the sole. Can support each other in the moving direction, and the above effect can be obtained more effectively. As described above, according to the sole for athletic artificial leg of the present embodiment, the wear resistance can be improved.
  • the ratio (negative rate) of the area of the groove 11 to the area of the sole in a plan view is from one side (toe side in the illustrated example) of the sole in the front-rear direction and the other side (toe side).
  • the heel side in the illustrated example is gradually increased toward the row, so that the effect of supporting the blocks 12 against each other on the toe side where the wear is relatively large is obtained, but the heel side where the wear is relatively small. As a result, drainage can be ensured, so that both abrasion resistance and drainage can be achieved at a high level.
  • the area of the block 12 in plan view (from the row on one side (toe side in the illustrated example) to the row on the other side (heel side in the illustrated example) in the front-rear direction of the sole is shown. (E.g., the average value in the row) is gradually reduced, so that the effect that the blocks 12 support each other on the toe side where the wear is relatively large is effectively obtained, but the drainage property is improved on the heel side where the wear is relatively small. Since it can be ensured, it is possible to achieve both abrasion resistance and drainage at a high level.
  • each row having a plurality of stepped blocks 12b the row from one side (toe side in the illustrated example) of the sole in the front-rear direction to the other side (heel side in the illustrated example).
  • the other step in the width direction is the highest step relative to the area in plan view of the stepped block 12b. Since the ratio of the area in plan view (for example, the average value in the row) is substantially gradually reduced, the effect that the blocks 12 support each other on the toe side where the wear is relatively large is obtained, but the wear is relatively small. Since the drainage property can be ensured on the heel side where the wear is small, both the wear resistance and the drainage property can be achieved at a high level.
  • each row having a plurality of stepped blocks 12b the row from one side (toe side in the illustrated example) of the sole in the front-rear direction to the other side (heel side in the illustrated example). Since the width (for example, the average value in the row) of the protruding portion 12e is gradually reduced toward the row, the effect that the blocks 12 support each other on the toe side where the wear is relatively large can be effectively obtained. Since the drainage property can be ensured on the heel side where the wear is relatively small, both the wear resistance and the drainage property can be achieved at a high level.
  • the stepped block 12b is provided in a part of the bottom surface 10, so that a high step is crushed at the time of contact with the ground, and the contact property is improved. The performance is also improved. Furthermore, since the planar shape of the highest step has a portion radially protruding from the center in plan view, it is possible to further enhance drainage and improve the drivability by increasing the edge component. Can also.
  • FIG. 2 is a developed view showing a pattern on a bottom surface of a sole for a sports prosthesis according to another embodiment of the present invention.
  • the sole of the present embodiment has a plurality of blocks 12 that are defined by grooves 11 and have a polygonal shape of a hexagon or more in at least a part of the area of the bottom surface 10. .
  • all the blocks 12 have a polygonal shape having a hexagonal shape or more (in this embodiment, a hexagonal shape).
  • the plurality of blocks 12 having a hexagonal planar shape include two blocks 12 adjacent to each other in a first direction (in this example, a width direction) and a second direction (in this example).
  • first direction in this example, a width direction
  • second direction in this example
  • the two blocks 12 are adjacent to each other. That is, the blocks 12 form rows in a direction (first direction) inclined (90 ° in this example) with respect to the front-rear direction of the sole, and the rows form a plurality of rows in the second direction.
  • Two blocks adjacent in the first direction each have a first side wall 12c extending substantially parallel to each other.
  • the plurality of blocks 12 have at least one row (10 rows in the drawing) formed in a direction inclined with respect to the direction in which the first side wall 12c extends.
  • the plurality of blocks 12 are arranged in a direction inclined with respect to the extending direction of the first side wall 12c of the block 12.
  • the above-mentioned rows have a plurality of rows (10 rows in the drawing), and two blocks 12 adjacent to each other between rows adjacent in the second direction extend substantially parallel to each other.
  • the block 12 formed on the bottom surface 10 of the sole is composed of only the block 12a having a substantially constant height.
  • the block height (depth of the groove 11) of the block 12a having a substantially constant height is not particularly limited, but may be, for example, 1.0 to 7.0 mm.
  • the interval between two adjacent blocks 12 (for example, the shortest distance d1) is constant in each column. In some rows, the area of the block 12 in a plan view is constant.
  • the groove width (for example, the maximum value of the groove width) increases substantially gradually. Therefore, in plan view, the ratio of the area of the groove 11 to the area of the sole (negative rate) is determined from the row on one side (toe side in the illustrated example) and the other side (heel side in the illustrated example) in the front-rear direction of the sole. It gradually increases toward the center in the front-rear direction.
  • the area of the block 12 in a plan view (for example, in rows) from one side (toe side in the illustrated example) and the other side (heel side in the illustrated example) of the sole in the front-rear direction toward the center in the front-rear direction. Average value) is decreasing gradually.
  • the shortest distance between two blocks 12 adjacent in the first direction (in this example, the width direction) among the plurality of blocks 12 in plan view is d1
  • the maximum length of the larger one of the two adjacent blocks 12 is L
  • the relational expression: d1 / L ⁇ 0.06 Meets in a row located in a partial area on one side (toe side in the illustrated example) of the sole in the front-rear direction, a part or all of the blocks 12 in the row are determined by the above relational expression. d1 / L ⁇ 0.06 Meets.
  • the shortest distance d1 is preferably 2 mm or less, more preferably 1.5 mm or less, and still more preferably 1.0 mm or less, from the viewpoint of improving wear resistance.
  • the shortest distance d1 is preferably at least 0.2 mm, more preferably at least 0.5 mm, even more preferably at least 0.7 mm, from the viewpoint of ensuring drainage.
  • the shortest distance between the second side walls is d2 (mm)
  • the shortest distance d2 (mm) is one of a plurality of rows in the front-rear direction (toe side in the illustrated example) and It gradually increases from the row on the other side (heel side in the illustrated example) toward the center in the front-rear direction.
  • the sole in at least a part of the area of the bottom surface 10, the sole has a plurality of blocks 12 which are defined by grooves 11 and have a polygonal shape of a hexagon or more. Since the relational expression, d1 / L ⁇ 0.06, is satisfied, the shortest distance d1 between the blocks 12 adjacent in the first direction is shorter than the size (and, therefore, rigidity) of the blocks 12. Therefore, when the blocks 12 flex and bulge at the time of touching the ground, the adjacent blocks 12 can support each other, and the sliding of the blocks 12 can be suppressed, and the wear resistance can be improved.
  • the two blocks 12 adjacent in the first direction each have a first side wall 12c extending substantially in parallel with each other, and the plurality of blocks are formed by extending the first side wall 12c. Since at least one row (ten rows in the drawing) is arranged in a direction substantially orthogonal to the direction in which the direction is changed, the shortest distance d1 is constant over the entire portion extending substantially in parallel. The effect of supporting each other can be obtained effectively. And especially in this embodiment, since the said 1st side wall 12c has the part which is the side wall which has the maximum length of each of the two blocks 12 adjacent in the 1st direction, the said part WHEREIN: The above-described supporting effect can be effectively obtained over the entire maximum length.
  • a plurality of rows (10 rows in the drawing) are provided, and two blocks 12 adjacent to each other between rows adjacent in the second direction extend in a second Since each of the side walls 12d is provided, an effect of supporting the blocks 12 adjacent to each other in the front-rear direction of the sole can be obtained.
  • the first direction is a direction (width direction) inclined with respect to the front-back direction of the sole, not only the force in the front-back direction but also the force in the width direction is greatly applied at the time of touchdown.
  • the blocks 12 can be supported in the moving direction, and the above-described effects can be obtained more effectively.
  • the wear resistance can be improved.
  • the spacing between the rows (from the row on one side (toe side in the illustrated example) and the other side (heel side in the illustrated example) of the sole in the front-rear direction toward the center in the front-rear direction is shown.
  • the groove width (for example, the maximum value of the groove width) of the groove 11 defining the groove is substantially gradually increased, the wear resistance of the toe side where the wear is relatively large and the heel side where the wear is large in some cases is improved, and the comparison is made.
  • the drainage property can be improved at the central portion in the front-rear direction where the abrasion is small, and the abrasion resistance and the drainage property can be compatible at a high level.
  • the ratio of the area of the groove 11 to the area of the sole (negative ratio) in plan view is one side (toe side in the illustrated example) and the other side (FIG.
  • the wear resistance on the toe side where the wear is relatively large and in some cases the heel side where the wear is large is improved,
  • the drainage property can be improved at the central portion in the front-rear direction where the abrasion is small, and the abrasion resistance and the drainage property can be compatible at a high level.
  • the block 12 is viewed in plan from the row on one side (toe side in the illustrated example) and the row on the heel side (in the illustrated example) of the sole in the front-rear direction.
  • the area e.g., the average value in a row
  • the drainage property can be improved in the part, and both the wear resistance and the drainage property can be achieved at a high level.
  • the embodiment shown in FIG. 2 is particularly advantageous in the case of an athletic event, an athlete, and the like in which wear is large not only on the toe but also on the heel side.
  • two blocks 12 adjacent in the first direction each have a first side wall 12c extending substantially parallel to each other, and a plurality of blocks 12 are provided.
  • at least one row of the rows 12 is arranged in a direction substantially perpendicular to the direction in which the first side wall 12c extends. This is because the wear resistance can be further improved.
  • At least one row has a portion where the shortest distance d1 (mm) increases from one side in the width direction to the other side. This is because both abrasion resistance and drainage can be achieved at a high level.
  • the first side wall 12c is preferably the side wall having the maximum length of each of the two blocks 12 adjacent in the first direction. This is because the wear resistance can be further improved.
  • two blocks 12 having a plurality of columns and adjacent between columns adjacent in a second direction different from the first direction are connected to each other. It is preferable to have a second side wall 12d different from the first side wall 12c and extending substantially in parallel. This is because the wear resistance can be further improved.
  • the shortest distance between the second side walls is d2 (mm)
  • the shortest distance d2 (mm) is one of the plurality of rows in the front-rear direction. It is preferable to have a portion that increases from the row to the other row. This is because the abrasion resistance and the drainage property can be compatible at a higher level.
  • a stepped block 12 b is provided on a part of the bottom surface 10. This is because both abrasion resistance and drainage can be achieved at a higher level.
  • At least a part of the block 12 has a portion where the width in the width direction increases from both ends in the front-rear direction of the block 12 toward the center. Is preferred. This is because the rigidity of the block 12 can be increased to further improve the wear resistance.
  • fluorine is applied to the groove wall and the groove bottom of the groove. This is because the drainage performance on the bottom surface 10 of the sole can be improved by applying fluorine to the groove wall and the groove bottom of the groove.
  • FIG. 3 is a schematic side view showing an example of a sports prosthesis with a sole attached.
  • the athletic prosthesis 1 has a leaf spring-shaped foot 2 in this example, and a sole 3 is attached to a contact area on the tip side thereof.
  • the base end of the foot 2 is connected to a socket via an adapter, and the wearer wears a prosthesis by accommodating a stump of the wearer's foot in the socket. be able to.
  • the adapter and the socket those according to the stump position of the foot, such as a thigh prosthesis and a lower leg prosthesis, are used.
  • connection side the side where the foot 2 is connected to the adapter
  • ground side the side which contacts the road surface S
  • toe T of the prosthetic leg 1 refers to the earliest position where the foot 2 extends from the connection side and ends.
  • the foot portion 2 of the prosthetic foot 1 has a straight portion 2a, a curved portion 2b convex to the toe T side, a curved portion 2c convex rearward in the fore-aft direction, and a ground contact in order from the connection side to the ground side. It has a curved portion 2d concave on the side and a grounding portion 2e extending toward the toe T in an arc shape convex on the grounding side.
  • the foot 2 of the athletic prosthesis 1 has a shape extending in a plate shape to the toe T side via at least one (one in the illustrated example) curved portion 2c.
  • the material of the foot 2 is not particularly limited, but it is preferable to use carbon fiber reinforced plastic or the like from the viewpoint of strength and weight reduction.
  • the ground contact portion 2e has a contact area 2f extending in an arc from the toe T to the curved section 2d side on the ground contact side, and the sole 3 is mounted on the contact area 2f.
  • the contact area 2f indicates the entire area that comes into contact with the road surface S when the wearer wearing the artificial prosthesis 1 performs a straight running operation, and in the state where the sole 3 is attached, the contact area 2f Abuts on the road surface S via
  • the sole 3 has a shape that follows the extending shape of the contact area 2f.
  • the ground side of the sole 3 is the bottom surface 10.
  • the bottom surface 10 has a shape in which the arcs X1 and X2 are continuous from the toe T side to the curved portion 2d side.
  • the arcs X1 and X2 have different radii of curvature, but may have the same radius of curvature.
  • the bottom surface 10 has one side and the other bounded by a line extending in the width direction W through a point C, which is a point of contact with the road surface S in a side view when the wearer's prosthetic leg 1 is mounted and the wearer stands upright.
  • the point C is a point that first comes into contact with the road surface S when the vehicle stands upright. That is, the upright state means that the wearer of the prosthesis 1 is a healthy foot that does not wear a prosthesis when only one is a prosthesis, and the body is supported by one prosthesis when both are prostheses. 1 indicates a state where the vehicle 1 first comes down on the road surface S and comes into contact with the road surface S first.

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)

Abstract

La présente invention concerne une semelle pour prothèse de jambe sportive qui comporte une pluralité de blocs sur au moins une partie de sa surface inférieure, les blocs étant divisés par des rainures, et les formes planes des blocs correspondant à des hexagones ou à des polygones d'ordre supérieur. La semelle satisfait l'équation relationnelle suivante : d1/L ≤ 0,06, d1 étant la distance la plus courte entre deux blocs adjacents l'un à l'autre dans une première direction parmi la pluralité de blocs, et L la longueur maximale du bloc présentant la plus grande longueur maximale parmi les deux blocs adjacents.
PCT/JP2019/028687 2018-07-24 2019-07-22 Semelle pour prothèse de jambe sportive WO2020022275A1 (fr)

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JP2018-138476 2018-07-24
JP2018138476 2018-07-24

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014104286A (ja) * 2012-11-29 2014-06-09 Nisshin Rubber Kk 靴底
JP2015536762A (ja) * 2012-12-04 2015-12-24 ナイキ イノベイト セー． フェー． フットウェア製品
JP2016150189A (ja) * 2015-02-19 2016-08-22 美津濃株式会社 義足用ソールシステム
US20170281372A1 (en) * 2016-04-04 2017-10-05 Fillauer Composites Llc Apparatus and method for a split toe blade
US20170281371A1 (en) * 2016-03-31 2017-10-05 Nike, Inc. Prosthetic Blade Attachment System

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014104286A (ja) * 2012-11-29 2014-06-09 Nisshin Rubber Kk 靴底
JP2015536762A (ja) * 2012-12-04 2015-12-24 ナイキ イノベイト セー． フェー． フットウェア製品
JP2016150189A (ja) * 2015-02-19 2016-08-22 美津濃株式会社 義足用ソールシステム
US20170281371A1 (en) * 2016-03-31 2017-10-05 Nike, Inc. Prosthetic Blade Attachment System
US20170281372A1 (en) * 2016-04-04 2017-10-05 Fillauer Composites Llc Apparatus and method for a split toe blade

Also Published As

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