WO2019132271A1 - Dispositif d'enlèvement de cal avec lames de coupe - Google Patents

Dispositif d'enlèvement de cal avec lames de coupe Download PDF

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Publication number
WO2019132271A1
WO2019132271A1 PCT/KR2018/015009 KR2018015009W WO2019132271A1 WO 2019132271 A1 WO2019132271 A1 WO 2019132271A1 KR 2018015009 W KR2018015009 W KR 2018015009W WO 2019132271 A1 WO2019132271 A1 WO 2019132271A1
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WIPO (PCT)
Prior art keywords
callus
plate
cutting
cutter
remover
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Ceased
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PCT/KR2018/015009
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English (en)
Inventor
Jeong Sik Han
Gyoung Hee Kim
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Individual
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Individual
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Publication date
Priority claimed from KR1020170180542A external-priority patent/KR101887634B1/ko
Priority claimed from KR1020180123741A external-priority patent/KR102544773B1/ko
Application filed by Individual filed Critical Individual
Publication of WO2019132271A1 publication Critical patent/WO2019132271A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/54—Chiropodists' instruments, e.g. pedicure

Definitions

  • the present invention relates to a callus remover, and more particularly to a callus remover having modified blade shapes capable of easily removing a callus formed on the skin with less force.
  • a callus is a thickened and a dead skin which is formed due to a repeated friction, pressure or irritation.
  • the callus may be most found on feet and generally not be harmful, but seem to be unsightly and sometimes lead to skin ulceration or infection.
  • the callus remover of '144 patent is arranged with a plurality of substantially circular small blades which are manufactured on the thin metal plate, called a callus removing plate (referred to as "a micro-cutter” hereinafter), and has been popular among customers due to its excellent operability.
  • Each of the micro-cutters has a planar protrusion plate having a circular or a polygonal shape with a predetermined dimension, which is elevated at a height less than 0.5 mm from the outer surface of the callus removing plate.
  • the elevated protrusion plate is connected to the outer surface of the callus removing plate via a pair of bridges which has a width W smaller than the longitudinal length of the protrusion plate.
  • An opening is formed at both sides of the bridges between the elevated protrusion plate and the outer surface of the callus removing plate along the periphery of the protrusion plate. The callus being cut or removed passes through the respective openings.
  • the protrusion plate is formed with a cutting blade having an acute angle at its distal end along the periphery of the protrusion plate except a portion the bridges is formed.
  • the cutting blade is configured to cut or eliminate a callus on the skin in any direction thereof.
  • the callus removing plate of '144 patent is integrally formed with the callus remover, such that the cutting blade is subject to be worn out only in one working direction in the callus remover.
  • a forward direction is defines as a direction away from a handle of the callus remover
  • a rearward direction is defined as a direction approaching the handle.
  • the cutting blade in one direction is primarily used and then easily worn out, but the cutting blade in the other direction is not hardly worn and still remains as a new one.
  • the callus remover of '144 patent needs relatively much forces to remove the callus from the skin.
  • the plurality of micro-cutters is disposed on the same plane, where all the cutting blades, i.e., the protrusion plates of the micro-cutters are elevated at the same height from the planar outer surface of the callus removing plate. Accordingly, almost all of the micro-cutters are arranged to face and contact the skin at the same time when applied onto the feet, so that each and every micro-cutters are configured to simultaneously penetrate into the callus on the feet during the callus removing action, which results in a drawback to need more forces at a time to remove the callus than before.
  • the callus remover of '144 patent tends to lose contact with a body portion of the user which has a narrower width than that of the callus remover, for example, a concave or arch portion on the foot, such that it is hard to neatly remove or eliminate the callus thereon.
  • the protrusion plate of the callus remover of '144 patent is substantially formed in a circle, and the cutting blade formed along the periphery thereof has a smaller radius of curvature than a circle, it is some inconvenient for the user to push or pull the callus remover with more forces in an inclined way against a lengthwise direction of the callus remover.
  • a callus removing plate comprising a cutter plate; and a plurality of micro-cutters arranged on the cutter plate to perform a callus cutting action, each micro-cutter comprises a protrusion plate substantially formed in an elliptical shape and elevated at a predetermined height from an outer surface of the cutter plate; a pair of bridges extended from and oppositely arranged from the cutter plate to support the protrusion plate; a cutting blade formed at a periphery of the protrusion plate with an acute angle to cut the callus on the skin; and an opening formed at both sides of the bridges along the periphery of the protrusion plate to pass the callus removed by the cutting blade, wherein the cutting blade includes a first cutting blade and a second cutting blade substantially formed in a symmetrical shape with the first cutting blade, and wherein the protrusion plate has a shape meeting a conditional expression of H ⁇ 2R + W, where H is a distance in
  • the cutter plate in accordance of the present invention may have a substantially rectangular shape with a curved cross section, wherein each of the first and second cutting blades may comprise a top edge, and an inclined edge extending at both sides of the top edge, and wherein a cutting length of the first and second cutting blades may be increased by the bridge, respectively.
  • first and second cutting blades may further comprise a side edge extending to a distal end of the bridge, and wherein the side edge is configured to increase a cutting length of the first and second cutting blades, respectively.
  • the side edge may be formed in a linear or curved shape.
  • a callus remover comprising a callus removing plate provided with a cutter plate formed with a plurality of micro-cutters formed as in one aspect of the present invention; a supporting frame which is integrally formed with the cutter plate or detachably coupled with the cutter plate, and a body frame to be coupled with the supporting frame, wherein the body frame includes a callus receiving portion formed with a space to collect a cut callus; and a handle connected at a distal end of the callus receiving portion and configured to be gripped by the user.
  • the callus removing plate may be coupled with the body frame by changing its direction in a lengthwise direction to use unworn cutting blades.
  • the callus remover may be formed with a gripping portion each protruded from at opposing distal ends of the supporting frame.
  • the callus remover may be provided at the supporting frame below the gripping portion with a locking rib to be coupled with a recess formed at the body frame.
  • the handle of the callus remover may have a semi-circular cross section with one side opened and be formed with a plurality of slip prevention walls which is equidistantly protruded outside and provides a cylindrical contour to the handle.
  • a cover coupled with the body frame and enclosing the callus removing plate to protect the micro-cutters from outside collision.
  • a callus removing plate whose callus removing action is neatly performed with ease through a sharpening effect of the cutting blade, thereby remarkably improving utility of a callus remover, which can be obtained through an increased cutting length to the cutting blades of the micro-cutters no matter in which direction the user pushes or pulls the callus remover.
  • the callus removing plate is severable from the callus remover and is replaceably assembled with the callus remover, such that once the cutting blades oriented in one direction are worn out due to unidirectional use of the callus remover, the callus removing plate can be assembled to the callus remover by changing its lengthwise direction to extend its life expectancy by using unworn cutting blades oriented in another direction.
  • the callus removing plate is formed with a curved outer surface which can minimize a contact area with the user's skin, thereby reducing a cutting resistance therebetween.
  • the user is able to easily eliminate the callus from the skin with less force.
  • the callus removing plate or the callus remover can be applied with ease to any of body portions, even to a concave or arch portion of the foot in order to remove the callus thereon.
  • FIG. 1 is an exploded perspective view illustrating the callus remover having a cover, a callus removing plate and a body frame according to a preferred embodiment of the present invention
  • FIG. 2 is a perspective view illustrating the callus removing plate arranged with a plurality of micro-cutters according to a preferred embodiment of the present invention
  • FIG. 3 is a side elevation view of the callus removing plate of FIG. 2;
  • FIG. 4 is a partially enlarged perspective view of one micro-cutter disclosed in FIG. 3;
  • FIG. 5 is an enlarged plan view of the micro-cutter of FIG. 4;
  • FIG. 6 (a) is a schematic view illustrating a conventional micro-cutter
  • FIG. 6 (b) and (c) schematically illustrate one micro-cutter according to a preferred embodiments of the present invention, respectively;
  • FIG. 7 is a schematic view illustrating a sharpening effect of the cutting blade according to a preferred embodiment of the present invention.
  • FIG. 8 (a) is a schematic view illustrating change of a cutting length of the cutting blade shown in FIG. 6 (c) in a working direction
  • FIG. 8 (b) and (c) illustrate change of a cross sectional shape and a cutting angle at both sides of the cutting blade in a working direction due to the sharpening effect according to a preferred embodiment of the present invention, respectively;
  • FIG. 9 (a) to (d) each is a schematic view illustrating change of a role of the cutting blade shown in FIG. 6 (c) depending on a working direction according to a preferred embodiment of the present invention
  • FIG. 10 is a perspective view illustrating the assembled callus remover of FIG. 1 omitting the cover to show the callus removing plate having a curved cross section;
  • FIG. 11 is a perspective bottom view illustrating the callus remover of FIG. 1;
  • FIG. 12 is a perspective view illustrating a callus remover according to another preferred embodiment of the present invention to show a callus removing plate having a planar cross section.
  • FIG. 1 is an exploded perspective view illustrating a callus remover 1 according to a preferred embodiment of the present invention.
  • the callus remover 1 comprises a callus removing plate 100, a body frame 200 assembled by the callus removing plate 100, and a cover 300 coupled with the body frame 200 while enclosing the callus removing plate 100 to protect it from outside.
  • the callus removing plate (100) comprises, as its main components, a cutter plate 10 arranged with a plurality of micro-cutters 20, and a supporting frame 30 coupled with the cutter plate 10.
  • the cutter plate 10 has a planar cross section as shown in FIG. 12 or preferably, a curved cross section having a predetermined radius of curvature as illustrated in FIG. 2 or 10.
  • the cutter plate 10 is formed in such a substantially symmetrical structure that can be attached to or detached from the supporting frame 30 even by changing its assembling direction in a lengthwise direction thereof.
  • the cutter plate 10 is formed substantially in a rectangular shape having a curved outer surface with a metal, preferably a stainless steel, whose cross section is in a convex shape where a center portion is elevated from both lateral side portions.
  • a convex shape with the curved outer surface is configured to allow a contact area with the user's skin surface to be as narrow as possible, which makes it possible to concentrate forces at the contact area during the callus removing operation by the callus removing plate 100 and reduces a cutting resistance therebetween. Accordingly, the user is able to easily eliminate the callus from the skin with less force.
  • each of the micro-cutters 20 comprises a protrusion plate 21 substantially formed in a planar shape and protruded outside (in an upward direction in FIG. 3) separately from an outer surface of the cutter plate 10 through a pair of brides 22, openings 23 and 24 disposed at both sides of the bridges 22 along the periphery of the protrusion plate 21 to pass a callus being cut, respectively and cutting blades 25 and 26 formed at a periphery of the protrusion plate 21 with an acute angle to cut the callus on the skin.
  • the protrusion plate 21 is formed in substantially an elliptical shape and elevated at a predetermined height, preferably 0.1mm ⁇ 0.5mm from the outer surface of the cutter plate 10.
  • the elevated height of the protrusion plate 21 is defined as a height to decide a thickness of the callus to be cut or eliminated from the skin, which may not exceed over 0.5mm for safety of the user from injury.
  • the pair of bridges 22 serves to connect the protrusion plate 21 to the cutter plate 10. As illustrated in FIGS. 4 and 5, the pair of bridges 22 is opposingly disposed at two locations, preferably at central linear portions of the protrusion plate 21.
  • the pair of bridges 22 is formed to have a width (W), preferably narrower than that of the protrusion plate 21 in consideration of dimensions of the openings 23 and 24 as well as the cutting blades 25 and 26.
  • the openings 23 and 24 formed at both sides of the bridges 22 may be in an arc shape along the periphery of the protrusion plate 21, respectively, through which the callus removed by the cutting blades 25 and 26 may passes.
  • an opening and a cutting blade located at left side of the bridge 22 is referred to as a first opening 23 and a first cutting blade 25, respectively and each of those at right side of the bridge 22 is referred to as a second opening 24 and a second cutting blade 26, respectively.
  • the first and second cutting blades 25 and 26 are inclinedly formed with an acute angle relative to a planer upper surface of the protrusion plate 21 to cut or remove the callus on the skin.
  • the first and second cutting blades 25 and 26 are formed along the entire periphery of the protrusion plate 21 except for portions connected by the bridges 22.
  • the protrusion plate 21 has a substantially symmetrical shape where the first and second cutting blades 25 and 26 are correspondingly disposed at both sides of the bridges 22, as shown in FIG. 5.
  • the first cutting blade 25 may comprise any one or more combination of a top edge 25a formed at the summit of a semi-circle shape, a side edge 25b formed in a curved shape at both side of the top edge 25a, and a bottom edge 25c extended from a distal end of the side edge 25b to a distal end of the respective bridges 22.
  • the second cutting blade 26 may comprise any one or more combination of a top edge 26a formed at the summit of a semi-circle shape, a side edge 26b formed in a curved shape at both side of the top edge 26a, and a bottom edge 26c extended from a distal end of the side edge 26b to the respective bridges 22.
  • the bottom edges 25c and 26c may have a same length or a different length, and may be formed in a linear or a curved shape depending upon a design requirement.
  • the micro-cutter 20 having the first and second cutter blades 25 and 26 described above are arranged in plural on the curved outer surface of the cutter plate 10 in the horizontal and vertical directions, respectively. Arrangement of the micro-cutter 20 may be accomplished in a row parallel to each other as shown in FIG. 1. However, as another embodiment, the plurality of micro-cutters 20 may be arranged in a zigzag way to each other on the cutter plate 10.
  • FIG. 6(a) illustrates a micro-cutter in the prior art, e.g., a micro-cutter disclosed in Korean Patent Registration No. 10-1184144 ('144 patent), whose protrusion plate is formed in a circular shape having a planar surface.
  • a conditional expression Ha 2Ra + W is met, where W is a width of the bridge in a lengthwise direction.
  • a diameter S of the micro-cutter would be equal to 2Ra.
  • the micro-cutter according to '144 patent has such a shape that the distance between the opposite top edges Ha has the same as or smaller than a diameter of a circle having a radius R from the centerline of the bridge to one of the top edges.
  • the micro-cutter 20 meets a conditional expression of H ⁇ 2R + W, where H is a distance in a lengthwise direction between top edges 25a and 26a of the first and second cutting blades 25 and 26, R is a radius of curvature of the first or second cutting blade 25 or 26 from a distal end of the bridge 22, and W is a width of the bridge 22 in a lengthwise direction.
  • FIG. 6(b) is a schematic plan view of a micro-cutter according to a preferred embodiment of the present invention.
  • the first cutting blade 25 or the second cutting blade 26 is formed as a semi-circle shape having a radius of curvature Rb measured from a distal end of the bridge 22 with a width W in a lengthwise direction.
  • the radius of curvature Rb of the micro-cutter in FIG. 6(b) is greater than the radius of curvature Ra of the micro-cutter in FIG. 6(a), such that a sharpening effect of the first and second cutting blades are improved.
  • FIG.6(c) indicates a schematic plan view of a micro-cutter according to another embodiment of the present invention.
  • the first cutting blade 25 or the second cutting blade 26 is formed as a semi-circle shape having a radius of curvature Rc measured from a distal end of the bridge 22.
  • each of the first and second cutting blades 25 and 26 has a top edge 25a or 26a, a side edge 25b or 26b formed in a curved shape at both sides of the top edge 25a or 26a, and a bottom edge 25c or 26c with a length L additionally extended from a distal end of the side edge 25b or 26b to a distal end of the respective bridges 22.
  • each of the first and second cutting blades 25 and 26 has a substantially semi-circle shape where a distance Hc in a lengthwise direction between opposites top edges 25a and 26a should be considered by the addition of the width W of the bridge and the length of the bottom edge 25c and 26c in a lengthwise direction. Accordingly, the first and second cutting blades 25 and 26 of FIG. 6(c) meet a conditional expression of Hc ⁇ 2Rc+ W.
  • the radius of curvature Rc of the micro-cutter in FIG. 6(c) is the same as the radius of curvature Rb of the micro-cutter in FIG. 6(b)
  • a sharpening effect of the first and second cutting blades 25 and 26 would be remarkably enhanced due to lengthening of the cutting blade by addition of the length L of the bottom edge 25c and 26c.
  • each of the first cutting blade 25 and the second cutting blade 26 of the conventional micro-cutter in FIG. 6 (b) is formed as a semi-circle shape which has just a top edge 25a or 26a and a side edge 25b or 26b, not having a bottom edge 25c or 26c as shown in the micro-cutter of FIG. 6 (c).
  • a sharpening effect is defined as an effect that is obtained when a cutting blade is applied with a force in an inclined direction by pulling or pushing the cutting blade while pressing, the cutting action is easily performed with less force by application of a smaller acute angle than an initial angle of the cutting blade when a force is applied in a vertical direction while pressing.
  • Such a sharpening effect will be explained in detail in FIG. 7.
  • FIG. 7 is a partial side view of a general kitchen knife having an upper portion UP and a lower portion LP formed with a cutting blade.
  • a hatched area shown in FIG. 7 (a) illustrates a cross section of the knife, wherein the cutting blade has a cutting angle ⁇ 1 and a thickness t1 and three points A, B, and C are marked, respectively.
  • FIG. 7(a) indicates a state when a cutting action is performed through a knife with the cutting angle ⁇ 1 by applying a force P in a vertical direction while pressing.
  • FIG. 8 (a) illustrates the protrusion plate 21 of one micro-cutter 20 shown in FIG. 5 or FIG 6(c).
  • the protrusion plate 21 is formed with the first and second cutting blades 25 and 26 in a substantially symmetrical shape relative to the bridge 22 having a width W.
  • Rc is a radius of curvature of the top edge 25a
  • Hc designates a distance in a lengthwise (vertical) direction between the opposite top edges 25a and 26a
  • S indicates a distance in a horizontal direction between the opposite bottom edges 25c of the first cutting blade 25.
  • Each of the first and second cutting blades 25 and 26 is formed to have a same cutting angle at the distal end along the periphery thereof except a portion connected by the bridge 22. From a reference point 1 at the center point of the top edge 25a, points 2, 3, 4 and 5 are allocated leftward and points 2', 3', 4' and 5' are allocated rightward with a regular spacing, respectively.
  • the callus removing plate with micro-cutters is assumed to move upward in FIG. 8 by being pushed to cut the callus.
  • a cross-sectional shape of the cutting blade at each point will be schematically delineated as shown in FIG. 8 (b) and (c), which will serve to perform a cutting action against the callus on the skin.
  • the first cutting blade 25 may have the sharpest edge with a minimum effective cutting angle at the distal end thereof and perform the cutting action with much better sharpening effects enhanced by pulling or pushing the callus removing plate.
  • the cutting blade may be configured to perform the cutting action with different cutting angles depending upon the location of the point, and further each of such cutting angles becomes much shaper via a sharpening effect by pulling or pushing the callus removing plate while pressing.
  • the user is able to easily and neatly remove the callus on the skin with less force by using the callus removing plate which is employed with the plurality of micro-cutters according the present invention as described above.
  • FIGS. 9(a) to 9(d) a role of the cutting blade having the micro-cutter 20 as indicated in FIG. 8 will be described, which can be changed according to a working direction of the cutting blade when pulled or pushed by the user.
  • FIG. 9 (a) illustrates a situation when the user pushes the callus removing plate 100 where the working direction of the micro-cutter 20 is oriented upward in the drawing.
  • the top edge 25a of the first cutting blade 25 becomes a main edge to perform a primary cutting action
  • each of the side edges 25b at right and left side acts as a sub edge to perform a secondary cutting action.
  • FIG. 9 (b) explains a situation when the user pushes the callus removing plate 100 in an oblique angle where the working direction of the micro-cutter 20 is oriented right upward in the drawing.
  • the top edge 25a and the side edge 25b at the right side each becomes a main edge to perform a primary cutting action
  • the top edge 25a and the side edge 25b at the left side each acts as a sub edge to perform a secondary cutting action.
  • FIG. 9 (c) describes a situation when the user inclinedly pushes the callus removing plate 100 where the working direction of the micro-cutter 20 is oriented left upward in the drawing.
  • the top edge 25a and the side edge 25b at the left side each becomes a main edge to perform a primary cutting action
  • the top edge 25a and the side edge 25b at the right side each acts as a sub edge to perform a secondary cutting action.
  • FIG. 9 (d) illustrates a situation when the user pushes the callus removing plate 100 in a right or left direction where the working direction of the micro-cutter 20 is horizontal in the drawing.
  • each of both bottom edges 25c of the first cutting blade 25 becomes a main edge to perform a primary cutting action
  • the top edge 25a acts as a sub edge to perform a secondary cutting action.
  • top edge 25a, the side edge 25b and the bottom edge 25c of the first cutting blade 25 may change its role as a main edge to perform a primary cutting action and/or a sub edge to perform a secondary cutting action in combination thereof according to the working direction of the micro-cutter 20 when the callus removing plate 100 is manipulated by the user.
  • the main blade being used in the primary cutting action may be quickly worn out and become obtuse according to the lapse of time, while the sub blade may be slowly worn or still remain in a good cutting ability. If there is a way to utilize the sub blade being unworn, such as changing a coupling direction of the callus removing plate with the callus remover in order to use the sub blade, it may be possible to extend the life span of the callus remover longer.
  • the callus remover 1 comprises the callus removing plate 100 arranged with the plurality of micro-cutters 20 on the cutter plate 10, the supporting frame 30 coupled with the cutter plate 10, the body frame 200 assembled by the callus removing plate 100, and the cover 300 enclosing the callus removing plate 100.
  • the supporting frame 30 may be coupled to the periphery of the cutter plate 10 to fix the cutter plate 10.
  • the supporting frame 30 may be integrally formed with the cutter plate 10 in an insert injection molding or discretely manufactured and detachably coupled with the cutter plate 10.
  • the cutter plate 10 may have a curved cross section and be configured to be assembled with the body frame 200 of the callus remover 1 as shown in FIG. 10.
  • the supporting frame 30 comprises a rim portion 31 encompassing the entire periphery of the cutter plate 10 and a wall portion 32 extending downwards from the rim portion 31 and press-fitted with the body frame 200 of the callus remover 1.
  • the wall portion 32 is retreatedly formed inward from a bottom surface of the rim portion 31 in a staircase shape.
  • the wall portion 32 may be extended in a predetermined length to be firmly coupled with body frame 200 and preferably formed with at least one press-fitting lug 33 on the outer surface to improve a coupling force with the body frame 200.
  • the supporting frame 30 may be provided with a pair of gripping portions 34 each of which is protruded, preferably at an opposing distal end of the supporting frame 30 in a lengthwise direction.
  • the gripping portion 34 may be formed like a protrusion with a semi-circular cross section, as shown in FIGS. 1 and 10, which may help the user to hold with ease when decoupling the supporting frame 30 from the body frame 200.
  • each of the locking rib 35 is disposed at an opposing distal end of the supporting frame 30 in a lengthwise direction.
  • the locking rib 35 is located below the gripping portion 34 and in a same planar surface of the wall portion 32.
  • each locking rib 35 may be formed in a cantilever type with elasticity and be coupled to one of the pair of recesses 36 in a snap-fit manner, which is concavely and oppositely formed at an inside surface of the body frame 200.
  • the callus removing plate 100 is severable from the body frame 200 of the callus remover 1 and is replaceably assembled with the body frame 200 of the callus remover 1.
  • the callus removing plate 100 can be assembled to the callus remover 1 by changing its lengthwise direction.
  • the second cutting blade 26 which is oriented in the opposite direction and is less worn or unworn can be used for a cutting action, which results in extending the life expectancy of the callus remover 1.
  • the body frame 200 may be detachably assembled with the supporting frame 30 to which the callus removing plate 100 is coupled. More specifically, the body frame 200 includes a callus receiving portion 210 to collect a cut callus from the skin, and a handle 220 connected at a distal end of the callus receiving portion 210.
  • the callus receiving portion 210 is formed with an opening at an upper side, preferably in a substantially rectangular shape, to which the periphery of the supporting frame 30 is press-fitted.
  • the callus receiving portion 210 is formed with a space at the lower side where the removed callus from the skin is accumulated therein and thrown away afterwards by the user.
  • the handle 220 is formed with a gripping groove 211 at a position corresponding to the gripping portion 34 protruded from the supporting frame 30.
  • the gripping portion 34 is coupled at the gripping groove 211 when the supporting frame 30 is assemble to the body frame 200.
  • the handle 220 needs to be manufactured in a geometrical shape easy to grip, in a lightweight structure, and with a material leaving less problems in injection or cooling works caused by a thickened portion.
  • the handle 220 of the callus remover 1 may have a semi-circular cross section with one side opened and a curved outer surface for easy grip.
  • the handle 220 may be formed with one or more slip prevention walls 221 in an inner space thereof for prevention of slip when the user grips the callus remover 1.
  • a distal end of the slip prevention wall 221 may have a curved portion 221a which is protruded outside in a substantially semi-circle shape from an imaginary surface formed by opposite bottom edges 220a of the handle 220.
  • each slip prevention wall 221 may be equidistantly arranged with a spacing in which the user's finger is not inserted into or jammed in. Since the overall contour of the handle 220 added by the curved outer surface of the slip prevention wall 221 may be a substantially cylindrical shape having a smooth curved outline, thereby providing an easy grip to the user.
  • the cover 300 may be detachably assembled with the callus removing plate 100 or with the body frame 200.
  • the cover 300 may enclose the callus removing plate 100 to allow the micro-cutters 20 not to be exposed outside, thereby protecting the cutting blades of the micro-cutters 20 from damage caused by collision with outer objects.
  • the user may hold the handle 200 of the callus remover 1 and contact the callus removing plate 100 to the skin.
  • the callus is cut or removed from the skin through the cutting blades.
  • the callus is cut by the first cutting blade 25 by pushing the callus removing plate 100, while the callus is cut by the second cutting blade 26 by pulling the callus removing plate 100.
  • each of the first and second cutting blades 25 and 26 has a top edge 25a or 26a, a side edge 25b or 26b, and a bottom edge 25c or 26c.
  • any one of the top edge 25a or 26a, the side edge 25b or 26b, and the bottom edge 25c or 26c can be a main edge to perform a primary cutting action. Accordingly, it will be appreciated that a callus cutting or removing action may be proceeded at any direction of the callus remover 1 with ease, thereby improving efficiency of the cutting action.
  • the callus remover 1 having a variety of elements with different shapes may be manufactured in an ordinary injection molding process merely by using an upper mold and a lower mold without need of applying a slide mold used in the convention art.
  • the callus remover 1A may be assembled with a callus removing plate 100A having all the same components as those illustrated in FIGS. 1 to 10 except for the callus removing plate 100A which has a planar cross section, i.e, having cutter plate 10A with a flat outer surface.
  • Another embodiment of the present invention may be made to arrangement of the micro-cutters 20 on the cutter plate 10.
  • the plurality of micro-cutters 20 may be arranged in a zigzag to each other on the cutter plate 10, where adjacent rows of the micro-cutters 20 are disposed in a crisscross way.
  • a callus not cut by the preceding micro-cutter can be eliminated by the subsequent micro-cutter, which providing a continuity to the callus removing work.

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  • Heart & Thoracic Surgery (AREA)
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  • Food-Manufacturing Devices (AREA)

Abstract

L'invention concerne une plaque d'enlèvement de cal agencée avec une pluralité de micro-lames, chaque micro-lame ayant une longueur de coupe accrue par un bord inférieur à des première et seconde lames de coupe ayant un bord supérieur et un bord latéral, ce qui permet d'obtenir un effet d'affûtage pour retirer le cal avec facilité, la pluralité de micro-lames étant formée sur une plaque de coupe de forme incurvée, qui peut réduire au minimum une zone de contact avec la peau de l'utilisateur pour éliminer facilement le cal de la peau avec moins de force même au niveau d'une partie concave du pied, et la plaque d'enlèvement de cal pouvant être assemblée à un dispositif d'élimination de cal en changeant sa direction longitudinale pour prolonger sa durée de vie en utilisant des lames de coupe non usées orientées dans une autre direction.
PCT/KR2018/015009 2017-12-27 2018-11-29 Dispositif d'enlèvement de cal avec lames de coupe Ceased WO2019132271A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR1020170180542A KR101887634B1 (ko) 2017-12-27 2017-12-27 마이크로 커터형 각질제거판 및 각질제거기
KR10-2017-0180542 2017-12-27
KR10-2018-0123741 2018-10-17
KR1020180123741A KR102544773B1 (ko) 2018-10-17 2018-10-17 마이크로 커터를 갖는 각질제거판 및 이를 채용한 각질제거기

Publications (1)

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WO2019132271A1 true WO2019132271A1 (fr) 2019-07-04

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PCT/KR2018/015009 Ceased WO2019132271A1 (fr) 2017-12-27 2018-11-29 Dispositif d'enlèvement de cal avec lames de coupe

Country Status (2)

Country Link
CN (1) CN109965955B (fr)
WO (1) WO2019132271A1 (fr)

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