Molded Insole, Footwear Item, And Manufacturing Method

Abstract

A molded insole includes a base, an internal lateral arch that is provided to accommodate the arch of the foot and that is raised relative to the base, and at least one hard region that is integrated into the base, having a hardness equal to or greater than that of the base. The base and the internal lateral arch of the insole constitute a single, mono-material part.

Claims

1. A molded insole, comprising a base, an internal lateral arch that is provided to accommodate the arch of the foot and that is raised relative to the base, and at least one hard region that is integrated into the base, having a hardness equal to or greater than that of the base, characterized in that the base and the internal lateral arch of the insole constitute a single, mono-material part

2. The insole according to claim 1, characterized in that the internal lateral arch has a volume adapted to the volume of the arch of the patient's foot, in particular in the case of dysmorphism.

3. The insole according to claim 1, characterized in that the internal lateral arch has a volume and a position determined according to three parameters: patient gender; patient shoe size; and patient foot morphology.

4. The insole according to claim 3, characterized in that the patient foot morphology parameter has three possibilities: flat, hollow, or physiological foot.

5. The insole according to claim 4, characterized in that a maximum thickness of the insole is 5.6±0.2 mm for a flat foot, 8.4±0.4 mm for a hollow foot, and 8.8±0.2 mm for physiological foot.

6. The insole according to claim 1, characterized in that the internal lateral arch has a curved lower surface forming a hollow with respect to a lower plane of the base and a curved upper surface projecting from an upper plane of the base.

7. The insole according to claim 6, characterized in that the internal lateral arch has lower and upper surfaces, the lower surface having a greater slope than the upper surface.

8. The insole according to claim 6, having an upper surface that is smooth.

9. The insole according to claim 1, characterized in that the hard regions are integrated into hollow chambers formed in the thickness of the base, said hard regions opening onto an underside of said base.

10. The insole according to claim 1, comprising an upper layer covering the mono-material part.

11. The insole according to claim 10, characterized in that: the insole, in the parts of the base without hard regions, measured on the upper side and over its entire thickness, has a hardness between 30 and 56 on the Shore A scale depending on the thickness, and the insole, in the parts of the base incorporating hard regions, measured on the upper side and over its entire thickness, has a hardness between 65 and 77 on the Shore A scale depending on the thickness.

12. A footwear item, comprising an insole according to claim 1.

13. A manufacturing method of an insole according to claim 1, comprising the following steps: a) a step of forming at least one hard region having a hardness equal to or greater than that of the base; b) a step of cutting from a mono-material strip, with or without an upper layer laminated on its surface, a preform to the dimensions of the mold corresponding to the insole; c) a step of molding the preform in one part comprising the base and the internal lateral arch, formed projecting from the base, at the insole desired size; d) a step of assembling the part, including the base and the internal lateral arch once removed from the mold, and the hard regions; and e) a finishing step to obtain the insole.

14. A method according to claim 13, characterized in that step c) of molding the preform is carried out by compressing in a mold a mono-material part of constant thickness, hardness and density, the mold having shapes intended to configure the base so that its upper surface does not undergo deformations when in contact with hard regions.

15. The method according to claim 13, characterized in that step b) comprises, as a preliminary step, laminating a strip corresponding to the upper layer over the entire surface of the mono-material strip.

Description

DESCRIPTION OF THE FIGURES

[0065] The invention will be better understood on reading the following description, given solely by way of non-limiting example and made with reference to the appended drawings in which:

[0066] FIG. 1 is a schematic top view of a molded insole according to the invention according to the arrow I of FIG. 3.

[0067] FIG. 2 is a schematic view from below of the insole of FIG. 1 according to the arrow II of FIG. 3.

[0068] FIG. 3 is a lateral view of the insole of FIGS. 1 and 2 from the periphery of the internal lateral arch, on the internal side of the foot.

[0069] FIG. 4 is a front view of the insole, according to the arrow IV in FIG. 1.

[0070] FIG. 5 is a rear view of the insole, according to the arrow V in FIG. 1.

[0071] FIGS. 6, 7 and 8 are sections of the insole seen from below in FIG. 2, along the axes VI, VII and VIII respectively.

[0072] FIG. 9 is a perspective view from the front and top of a pair of insoles according to the invention, with the insole on the right in real view, and the insole on the left in conceptual view, with elevation lines shown on the arch, and hard regions shown in dotted lines on the base.

[0073] FIG. 10 is a schematic representation of the underside of a right foot, illustrating the Chippaux Smirak Index (CSI).

DETAILED DESCRIPTION

[0074] FIGS. 1 to 10 show a molded insole (1) designed to fight against venous stasis induced by venous insufficiency in a patient.

[0075] The insole (1) comprises a base (10), an internal lateral arch (20) raised relative to the base (10), four hard regions (30 (31, 32, 33, 34)) having a hardness greater than that of the base (10), and a top layer (40).

[0076] According to the invention, the base (10) and the internal lateral arch (20) of the insole constitute a single, mono-material part (2). Thus, the insole (1) is simple and economical to manufacture, due to the use of a single material to make the base (10) and the internal lateral arch (20) of the insole (1).

[0077] The base (10) is substantially planar.

[0078] The internal lateral arch (20) constitutes a portion of the insole (1), provided to accommodate the arch of the patient's foot. This configuration promotes venous return, thanks, in particular, to the raised position of the internal lateral arch (20), formed projecting from the upper side of the base (10). The internal lateral arch (20) has a curved shape so as to match the shape of the arch of the patient's foot.

[0079] As shown in FIG. 1 in particular, the internal lateral arch (20) is defined by a virtual line connecting the periphery of the insole, on the internal side of the foot, in front of the heel to the periphery of the insole, on the internal side of the foot, near the base of the metatarsus in the longitudinal direction, this virtual line passing near the center of the insole in the transverse direction.

[0080] According to the invention, the insole reaches a maximum thickness approximately halfway between the 2 ends of the virtual line defining the lateral arch designated “MAX” in FIG. 1.

[0081] The thickness of the insole increases from the external side of the insole towards the internal side of the arch to reach its maximum thickness along the virtual line. From this maximum thickness, the thickness of the insole decreases again.

[0082] The internal lateral arch is defined by this virtual line corresponding to the maximum thickness of the insole for each of the vertical cross sections of the insole, in the direction of the width of the insole. These values are designated MAX1, MAX1, MAX2, MAX2′ etc. and gradually increase to the MAX value.

[0083] The arch (20) has a curved lower surface (21) forming a hollow with respect to the lower plane (P11) of the base (10). The arch (20) has a curved top surface (22) projecting from the top plane (P12) of the base (10). The lower surface (21) has a steeper slope than the upper surface (22) of the arch (20). This allows the insole to match the morphology of the arch of the foot.

[0084] In practice, the plantar venous reservoir is positioned in the lateral plantar veins located deep at the arch of the foot.

[0085] By following the shape of the arch of the foot, the internal lateral arch (20) acts as a “pump” for the deep activation of the lateral plantar veins.

[0086] This action is particularly useful in case of dysmorphism of the patient, characterized by a deformation of the arch of the foot leading to poor functioning of the plantar pump linked to the anatomical modifications. The insole (1) then allows to correct this problem.

[0087] The hard regions (30) are spaced apart along a longitudinal direction of the insole (1). These hard regions (30) correspond to the foot support points: sole of the foot (central zone of the foot), metatarsus (forefoot), heel and tarsus (rearfoot). The specific location of the hard regions (30) allows to distribute in a homogeneous manner the weight of the body while in a standing position from these points subject to strong stresses over the entire surface located under the foot. Moreover, the hard regions (30) constitute a reinforced protection of these sensitive points.

[0088] The hard regions (30) are auxiliary activators for improving venous return. Due to their location, and their hardness equal to or greater than that of the base (10), the hard regions (30) act at the surface of the soles of the feet to create a “2nd pump” effect, as a complement to the “1st pump” effect created by the internal lateral arch (20) acting in depth to activate the lateral plantar veins.

[0089] This effect is reinforced by the fact that the base is configured so that its upper surface does not undergo deformations in contact with the hard regions at the time of manufacture of the insole, as will be seen later. Therefore, the surface of the insole is smooth.

[0090] More particularly, the hard regions (30) may be formed by inserts (31, 32, 33, 34) integrated into chambers provided in the base (10). This integration may be done, for example, by laminating the inserts (31-34) on the base (10).

[0091] The inserts (31-34) act as reinforcements, arranged on the underside of the insole (1) and corresponding to the bearing points of the patient's foot on the insole.

[0092] The inserts (31-34) have different geometric shapes, corresponding to the surface of the patient's bearing points: [0093] the insert (31) is located at the forefoot, below the phalanges, [0094] the insert (32) is located in the central zone of the foot, [0095] the insert (33) is located in a zone close to the heel, between the central zone and the heel, [0096] the insert (34) is located under the heel.

[0097] As shown in FIGS. 6 and 8, in particular, the base (10) comprises cavities or chambers for accommodating the inserts (31-34). The thickness of the base (10) is reduced in these cavities. This thickness is such that the upper surface of the base does not undergo deformations in contact with hard regions during manufacture, which contributes to the improvement of venous return. In practice, the hard regions (30) are flush with the lower surface of the base (10). This makes it possible to have contact at all points between the underside of the insole and the shoe.

[0098] The internal lateral arch (20) of each insole (1) is designed according to the gender, size and morphology of the patient's foot (flat foot, hollow foot or physiological foot). Advantageously, the internal lateral arch (20) is designed with a volume specifically adapted to the volume of the patient's arch of the foot, in particular in the event of dysmorphia. This volume may be determined by acquisition by 3D scanner. The volume of the internal lateral arch (20) is then the 3D shape of the arch of the foot. The correct positioning of the volume of the internal lateral arch (20) on the insole (1) is guaranteed by matching, from the rearmost point of the insole (1), the geographical location of an anatomical reference point taken on the arch of the foot in relation to the rear of the foot. Preferably, this anatomical reference point is the point of highest altitude of the arch of the foot, i.e., corresponding to the maximum hollow formed in the arch of the foot. FIGS. 6, 7 and 8 show cross sections of the insole at different locations: [0099] The cross section VI is made close to the heel, [0100] The cross section VII is made in the rear middle part of the insole, [0101] The cross section VIII is made in the front middle part of the insole.

[0102] As the cross section VI shows, the insole (1) has a constant thickness at the heel, in practice of the order of 3.5 mm, then gradually increases near the virtual line, appearing in a solid line, then reaches the virtual line at the MAX1 value greater than 3.5 mm. The thickness of the lateral arch then decreases towards the inside of the insole.

[0103] The cross section VII corresponds to the section of the insole with the maximum thickness. It is designated MAX.

[0104] The cross section VIII corresponds to a section of the insole with a constant thickness across its width, which means that this section does not contain the internal lateral arch. The thickness of the insole is constant here, in practice approximately 3.5 mm over its entire width.

[0105] As already stated, the insoles are different depending on the morphology of the patient's foot. What changes from one insole to another is essentially the MAX maximum thickness that said insole may reach, in practice 5.6±0.2 mm for a flat foot, 8.4±0.4 mm for a hollow foot and 8.8±0.2 mm for a physiological foot.

[0106] The insole (1) preferably comprises an upper layer (40), covering the mono-material part (2), to improve the comfort and hygiene of the insole (1). The upper layer (40) constitutes an accommodating surface for the foot resting on the insole (1). To mass-produce a range of insoles (1), one mold is available per gender and per size (for example, 36 to 41 for women; 39 to 45 for men), and per type of arch (flat, hollow or physiological).

[0107] Clinical trials were carried out to test the insole (1) according to the invention as to its effectiveness on improving venous return.

[0108] The insoles (1) tested comprise a base (10) of 100% polyurethane foam, with a hardness of 22-50 on the Shore A scale depending on its thickness, as well as hard regions (30) composed of a foam consisting of 95% polyurethane and 5% carbon, with a hardness of 56 on the Shore A scale.

[0109] In the parts free of hard regions measured on the upper side and over its entire thickness, the insoles have a hardness of between 30 and 56 on the Shore A scale depending on the thickness.

[0110] In the parts incorporating hard regions measured on the upper side and over its entire thickness, the base of the insoles has a hardness of between 65 and 77 on the Shore A scale depending on the thickness.

[0111] The hardness of the elastomers was measured according to ISO 868/DIN 53505/ASTM 2240 standards.

[0112] On the upper side, in contact with the foot, the insole is covered with an upper layer (40) composed of 90% polyamide microfiber and 10% polyurethane.

[0113] First, the effect of wearing a pair of molded insoles (1) on the velocity of venous return was compared to the effect obtained when not wearing these insoles (1). Also, the effect of wearing a pair of insoles (1) on postural stability in a standing position (eyes closed and eyes open) was compared to the effect obtained when not wearing these insoles.

[0114] A population of 75 subjects was divided into 3 groups of 25, depending on the type of foot: hollow, flat or physiological).

[0115] The tests were carried out to study four criteria: [0116] 1—Evaluation and comparison of the evolution of the maximum velocity of the venous flow at the popliteal vein (called PV: Peak Velocity) between morning and evening, after wearing insoles (1) for one day and one day without wearing insoles (1). [0117] 2—Evaluation and comparison of the evolution of the maximum velocity of the venous flow at the popliteal vein, averaged over a window of time (called TAPV: Time Average Peak Velocity) between morning and evening, after wearing insoles (1) for one day and one day without wearing insoles (1). [0118] 3—Evaluation and comparison of the evolution of the average velocity of the venous flow over the entire section of the popliteal vein, averaged over a time window (called TAMV: Time Average Mean Velocity) between morning and evening, after wearing insoles (1) for one day and one day without wearing insoles (1). [0119] 4—Evaluation and comparison of the evolution of postural stability between morning and evening, in a standing position (eyes closed and eyes open) after wearing insoles (1) for one day and one day without wearing insoles (1), by analyzing: [0120] the length traveled by the center of pressure (COP) over 30 seconds of recording, [0121] the area of the ellipse in mm.sup.2.

[0122] For the first three criteria presented above, the study shows that wearing an insole (1) leads to a clear improvement in venous return with wearing an insole (1) between morning and evening, and a clear improvement of venous return at fixed time (e.g., evening).

[0123] In the tables below, the results obtained are expressed in percentages and show an average improvement of 49.9% for the 75 subjects, broken down into 55.95% for the flat foot group, 44.96% for the hollow foot group; 48.76% for the physiological foot group.

[0124] Table 1 below corresponds to the control test (without insole). Subjects 1 to 25 have flat feet, subjects 26 to 50 have hollow feet, and subjects 51 to 75 have physiological feet.

TABLE-US-00001 TABLE 1 CONTROL (WITHOUT INSOLE) Morning Evening Evolution Evolution Evolution Type of Subject PV TAPV TAMV PV TAPV TAMV of PV of TAPV of TAMV feet No. (cm/s) (cm/s) (cm/s) (cm/s) (cm/s) (cm/s) (%) (%) (%) FLAT 1 3.95 3.42 1.15 4.05 3.28 1.14 2.56% −4.15% −1.04% FEET 2 17.79 10.56 3.65 16.42 12.31 6.25 −7.70% 16.57% 71.03% 3 10.71 5.27 1.67 9.65 4.75 1.51 −9.90% −9.86% −9.52% 4 5.41 4.35 2.05 5.43 4.32 1.98 0.33% −0.76% −3.46% 5 3.87 2.74 0.88 3.86 2.74 0.92 −0.08% 0.07% 4.27% 6 15.71 12.57 4.88 15.61 9.77 4.08 −0.64% −22.27% −16.34% 7 7.74 5.63 2.29 7.67 5.40 1.97 −0.87% −4.14% −13.85% 8 3.84 3.04 1.04 3.82 2.98 1.05 −0.36% −1.81% 0.19% 9 5.75 4.83 2.23 7.62 6.22 2.59 32.52% 28.94% 16.48% 10 10.32 8.34 1.59 10.47 8.64 1.60 1.43% 3.63% 0.38% 11 18.09 15.09 6.34 18.06 15.17 6.30 −0.17% 0.53% −0.63% 12 13.46 10.63 3.10 11.33 9.49 2.91 −15.82% −10.67% −6.19% 13 5.29 4.51 1.70 4.96 4.07 1.63 −6.26% −9.74% −3.60% 14 10.28 8.31 3.29 10.47 8.38 2.71 2.56% −4.15% −1.04% 15 17.60 12.45 5.71 19.56 14.10 6.14 11.14% 13.25% 7.55% 16 12.20 8.95 3.74 13.49 10.57 4.01 10.57% 18.04% 7.25% 17 19.37 16.29 6.70 16.66 12.19 4.78 −13.99% −25.17% −28.71% 18 9.65 7.56 1.93 8.05 5.49 1.56 −16.57% −27.33% −19.35% 19 5.10 4.13 1.47 7.16 5.75 1.45 40.40% 39.37% −1.30% 20 26.44 17.73 8.33 23.47 16.20 7.95 −11.23% −8.63% −4.64% 21 14.23 12.10 4.49 14.32 11.95 4.12 0.63% −1.24% −8.05% 22 11.95 10.25 4.36 11.85 9.33 2.99 −0.84% −8.94% −31.54% 23 6.70 5.07 1.92 12.48 10.64 3.57 86.35% 109.74% 85.71% 24 11.17 8.01 1.87 11.21 8.03 2.68 0.36% 0.25% 43.57% 25 16.59 10.00 4.97 20.69 12.00 5.92 24.71% 20.07% 19.04% Average 11.33 8.47 3.25 11.53 8.55 3.27 5.13% 4.66% 3.59% 26 7.15 6.03 2.04 6.11 5.00 1.79 −14.58% −17.10% −12.40% 27 5.30 3.78 1.84 5.24 4.02 1.86 −1.09% 6.36% 0.65% 28 3.32 2.63 1.12 3.61 3.00 1.23 8.55% 14.10% 9.26% 29 10.59 7.82 3.45 8.17 6.36 2.98 −22.89% −18.67% −13.62% 30 5.67 4.82 2.42 5.77 4.87 2.42 1.75% 1.00% 0.00% 31 4.94 4.01 1.40 4.97 3.99 1.40 0.59% −0.37% −0.21% 32 5.61 4.64 1.78 5.62 4.66 1.77 0.23% 0.50% −0.56% 33 9.81 8.40 2.69 10.00 8.90 2.66 1.94% 5.92% −0.89% 34 13.48 11.99 4.77 12.19 10.93 4.38 −9.57% −8.83% −8.24% 35 4.64 3.46 1.21 4.59 3.34 1.19 −1.06% −3.38% −1.32% 36 3.84 2.62 0.95 3.84 2.63 0.95 0.03% 0.42% −0.21% 37 5.68 3.99 1.52 6.57 4.43 1.61 15.68% 11.11% 6.19% 38 7.98 5.58 1.74 8.00 5.61 1.74 0.16% 0.43% 0.06% 39 9.94 7.89 2.71 8.16 6.44 2.24 −17.89% −18.38% −17.62% 40 6.05 4.75 1.59 6.25 5.01 1.66 3.44% 5.41% 4.59% 41 8.75 7.45 1.94 8.91 7.63 2.12 1.82% 2.40% 9.18% 42 8.57 5.77 1.85 8.74 5.94 1.80 2.05% 2.84% −2.97% 43 16.98 11.84 4.24 15.48 12.16 4.26 −8.83% 2.70% 0.52% 44 9.23 7.54 1.75 9.27 7.64 1.80 0.47% 1.27% 2.69% 45 30.14 26.91 10.80 33.36 28.82 10.31 10.68% 7.10% −4.56% 46 8.40 6.62 2.89 8.09 6.66 3.03 −3.75% 0.56% 4.84% 47 18.84 14.09 3.83 18.55 14.25 3.96 −1.54% 1.14% 3.37% 48 9.96 7.62 2.31 9.84 7.50 2.25 −1.19% −1.56% −2.47% 49 11.93 8.98 3.37 18.55 14.39 4.01 55.49% 60.19% 19.16% 50 4.37 3.57 1.61 4.25 3.10 1.39 −2.70% −13.15% −13.15% Average 9.25 7.31 2.63 9.36 7.49 2.59 0.71% 1.68% −0.71% PHYSIO- 51 20.98 11.65 5.954 20.12 11.33 5.238 −4.10% −2.76% −12.03% LOGICAL 52 24.85 20.61 8.71 24.85 20.44 5.85 0.00% −0.82% −32.79% FEET 53 8.73 4.82 1.93 8.37 4.68 1.88 −4.15% −2.92% −2.60% 54 8.66 6.93 1.80 8.46 6.42 1.56 −2.40% −7.44% −13.64% 55 13.53 11.08 3.60 13.82 11.49 4.31 2.14% 3.65% 19.94% 56 28.02 22.69 9.07 27.93 22.40 9.30 −0.32% −1.28% 2.50% 57 8.56 7.13 2.32 7.19 5.62 2.01 −16.04% −21.19% −13.45% 58 7.99 6.06 2.57 7.67 5.52 2.22 −4.03% −8.92% −13.60% 59 9.51 7.20 2.89 8.64 6.81 2.71 −9.12% −5.47% −6.19% 60 8.54 6.75 2.89 8.47 6.47 2.89 −0.73% −4.16% −0.03% 61 10.15 7.56 3.35 10.26 7.41 3.10 1.14% −1.96% −7.66% 62 7.42 5.46 2.11 7.62 5.96 2.18 2.80% 9.03% 3.61% 63 7.04 5.94 2.51 6.16 5.17 1.99 −12.49% −13.00% −20.82% 64 17.59 10.21 4.04 17.77 10.79 4.10 1.02% 5.77% 1.41% 65 6.93 5.16 1.43 9.36 7.81 2.49 34.99% 51.27% 74.70% 66 6.03 4.96 2.01 6.08 4.92 1.79 0.78% −0.93% −11.12% 67 15.50 9.45 4.34 14.38 8.91 4.27 −7.23% −5.67% −1.66% 68 6.80 5.73 1.92 6.60 5.64 1.93 −2.88% −1.48% 0.57% 69 12.41 10.34 3.25 12.12 10.07 3.12 −2.34% −2.61% −4.00% 70 14.25 11.82 3.25 13.77 11.20 3.11 −3.37% −5.21% −4.25% 71 3.81 3.05 1.07 4.28 3.27 1.32 12.12% 7.18% 22.67% 72 5.42 4.30 1.50 4.92 3.95 1.36 −9.28% −8.21% −8.90% 73 43.94 39.72 16.43 37.19 31.05 16.01 −15.36% −21.83% −2.56% 74 7.24 6.04 2.01 7.96 6.08 1.82 10.02% 0.53% −9.39% 75 15.57 12.25 4.08 15.40 12.03 4.10 −1.09% −1.80% 0.42% Average 12.78 9.88 3.80 12.38 9.42 3.63 −7.23% −5.67% −1.66% AVERAGE 11.12 8.55 3.23 11.09 8.49 3.16 1.55% 1.58% 0.44% indicates data missing or illegible when filed

[0125] Table 2 below corresponds to the test with an insole according to the invention: The subjects are the same as for Table 1. Subjects 1 to 25 have flat feet, subjects 26 to 50 have hollow feet, and subjects 51 to 75 have physiological feet.

TABLE-US-00002 TABLE 2 INSOLE ACCORDING TO THE INVENTION Morning Evening Evolution Evolution Evolution Type of Subject PV TAPV TAMV PV TAPV TAMV of PV of TAPV of TAMV feet No. (cm/s) (cm/s) (cm/s) (cm/s) (cm/s) (cm/s) (%) (%) (%) FLAT 1 3.99 3.22 1.25 5.96 4.28 2.00 49.35% 32.70% 60.47% FEET 2 17.64 10.48 4.03 22.49 16.63 7.38 27.49% 58.68% 83.18% 3 10.73 5.52 1.78 12.25 6.26 1.90 14.17% 13.33% 7.09% 4 5.42 4.31 2.06 11.51 8.33 3.43 112.11% 93.18% 66.28% 5 3.88 2.73 0.95 5.85 3.81 1.30 50.94% 39.71% 36.59% 6 15.71 12.57 4.91 15.80 9.72 4.11 0.57% −22.69% −16.46% 7 7.81 6.00 2.31 12.37 8.47 3.15 58.33% 41.04% 36.35% 8 3.86 3.09 1.03 5.45 3.77 1.38 41.07% 22.18% 33.87% 9 5.72 4.90 2.24 10.03 7.86 3.39 75.16% 60.51% 51.50% 10 10.35 8.84 1.62 15.08 12.95 2.73 45.76% 46.54% 68.68% 11 18.18 15.19 6.32 25.70 21.44 8.96 41.36% 41.15% 41.76% 12 9.06 6.55 3.18 15.46 9.61 4.72 70.62% 46.72% 48.30% 13 5.26 4.23 1.65 8.03 6.31 1.89 52.59% 49.17% 14.94% 14 10.40 8.23 3.32 15.10 11.90 5.19 45.16% 44.66% 56.43% 15 17.60 12.37 5.49 29.20 21.14 10.12 65.91% 70.90% 84.51% 16 12.26 7.54 3.91 18.63 14.49 5.83 51.96% 92.25% 48.98% 17 19.48 16.31 6.00 23.83 17.38 7.72 22.33% 6.56% 28.69% 18 9.63 7.67 1.94 11.87 9.64 2.83 23.26% 25.61% 46.15% 19 5.17 4.23 1.47 11.56 8.78 2.32 123.51% 107.49% 57.72% 20 26.22 17.55 8.39 35.89 27.14 11.51 36.88% 54.64% 37.15% 21 13.99 12.12 4.46 19.62 16.35 6.11 40.24% 34.90% 37.02% 22 11.89 10.19 3.66 15.96 12.26 3.94 34.23% 20.36% 7.63% 23 6.85 5.23 1.97 19.29 16.05 5.10 181.73% 207.18% 158.95% 24 11.38 8.09 1.89 16.56 11.79 3.86 45.52% 45.81% 104.67% 25 16.65 9.73 5.06 31.40 18.48 8.91 88.59% 90.01% 75.85% Average 11.17 8.27 3.23 16.60 12.19 4.79 55.95% 52.90% 51.05% HOLLOW 26 7.05 6.03 2.02 10.55 8.93 3.03 49.67% 48.21% 50.22% FEET 27 5.39 3.94 1.75 8.39 5.46 1.78 55.68% 38.43% 1.25% 28 3.78 3.01 1.33 5.28 3.81 1.34 39.79% 26.56% 0.75% 29 10.78 8.68 3.45 16.43 13.77 5.67 52.41% 58.66% 64.31% 30 5.28 3.31 1.46 6.77 3.65 1.31 28.17% 10.28% −10.13% 31 5.07 4.07 1.52 6.06 4.61 1.65 19.33% 13.31% 8.22% 32 5.63 4.66 1.77 7.50 6.16 2.28 33.29% 32.23% 28.57% 33 10.10 8.47 3.02 13.02 11.22 4.06 28.96% 32.45% 34.55% 34 12.39 10.87 4.21 17.36 14.31 5.89 40.11% 31.65% 39.77% 35 4.44 3.42 1.18 5.54 4.21 1.33 24.77% 23.25% 12.28% 36 3.86 2.61 0.93 5.13 3.40 0.96 32.92% 30.20% 3.27% 37 5.69 3.94 1.35 8.56 5.79 2.25 50.50% 46.89% 66.86% 38 8.01 5.59 1.74 11.95 8.49 2.15 49.11% 51.95% 23.72% 39 10.05 7.75 2.60 13.15 9.98 3.32 30.83% 28.82% 27.63% 40 6.09 4.83 1.58 9.42 7.57 2.45 54.58% 56.90% 54.71% 41 8.71 7.44 1.92 11.61 9.59 2.93 33.30% 28.82% 52.71% 42 8.45 6.37 1.73 13.75 9.81 2.73 62.82% 53.95% 57.93% 43 16.09 12.28 3.69 23.87 18.47 7.02 48.35% 50.41% 90.34% 44 9.36 7.47 1.78 15.12 12.50 2.51 61.61% 67.38% 41.06% 45 30.68 26.33 10.35 39.79 34.98 12.41 29.69% 32.85% 19.91% 46 8.51 6.80 3.11 13.34 11.21 4.43 56.83% 64.95% 42.61% 47 18.61 14.22 3.92 30.59 23.77 8.53 64.37% 67.16% 117.71% 48 10.15 7.46 2.26 14.50 11.81 3.44 42.84% 58.35% 52.42% 49 11.87 9.04 3.38 26.05 21.69 7.93 119.46% 140.07% 134.98% 50 4.43 3.52 1.57 5.08 3.82 1.74 14.68% 8.40% 10.56% Average 9.22 7.28 2.54 13.55 10.76 3.72 44.96% 44.09% 41.05% PHYSIO- 51 21.21 12.84 6.45 30.6 16.13 7.736 44.27% 25.62% 19.98% LOGICAL 52 24.88 20.60 8.59 38.49 31.34 12.80 54.70% 52.14% 49.10% FEET 53 8.413 4.79 1.89 12.02 8.341 1.89 42.87% 73.99% 0.00% 54 8.82 7.03 1.94 13.77 10.73 2.99 56.16% 52.55% 54.60% 55 13.50 11.04 3.56 19.88 16.22 5.19 47.26% 46.92% 45.63% 56 28.00 22.40 10.14 42.21 34.50 15.25 50.75% 54.02% 50.34% 57 8.57 7.25 2.34 10.44 8.76 2.93 21.71% 20.73% 25.09% 58 8.01 5.83 2.55 8.71 6.66 3.04 8.72% 14.40% 19.34% 59 9.18 7.19 2.85 14.62 10.99 4.34 59.26% 52.91% 52.14% 60 8.43 6.41 2.88 13.57 11.48 3.99 60.95% 79.01% 38.55% 61 10.15 7.51 2.47 18.99 14.18 5.98 87.19% 88.94% 141.69% 62 7.58 5.51 2.23 11.42 9.32 3.30 50.64% 69.19% 48.18% 63 7.05 5.77 2.57 9.91 8.71 3.79 40.68% 50.85% 47.72% 64 17.58 10.16 3.40 25.38 15.84 5.50 44.37% 55.98% 61.71% 65 9.18 7.82 2.94 15.35 13.26 4.58 67.17% 69.67% 56.01% 66 5.99 5.09 2.05 11.67 10.10 2.79 94.89% 98.49% 36.11% 67 15.68 9.50 4.66 22.60 13.18 6.00 44.13% 38.72% 28.78% 68 6.83 5.73 1.96 9.77 7.66 2.41 42.95% 33.58% 23.23% 69 12.40 10.33 1.95 17.76 14.87 4.68 43.23% 43.91% 140.58% 70 14.32 11.63 3.17 19.50 15.02 4.80 36.17% 29.15% 51.42% 71 3.87 3.29 1.14 6.44 5.14 1.95 66.26% 56.51% 70.84% 72 5.43 4.28 1.47 5.96 4.27 1.50 9.82% −0.12% 2.18% 73 44.40 40.23 16.02 52.92 46.76 16.90 19.19% 16.23% 5.49% 74 7.22 5.92 1.96 12.99 11.04 3.54 79.89% 86.49% 80.79% 75 15.66 12.34 4.19 22.96 18.17 8.02 46.62% 47.30% 91.61% Average 12.89 10.02 3.81 18.72 14.51 5.44 48.79% 50.29% 49.64% AVERAGE 11.09 8.53 3.20 16.29 12.49 4.65 49.90% 49.09% 47.25%

[0126] Thus, regardless of the type of foot analyzed (hollow/flat/physiological), the study demonstrates an improvement in hemodynamics obtained by wearing an insole (1) according to the invention.