KR100401457B1 - Multi-functioning artificial foot - Google Patents

Abstract

end. The technical field to which the invention described in the claims belongs.

The present invention relates to a multifunctional artificial foot that provides natural and stable gait to lower and thigh amputators, thereby reducing energy consumption and allowing recreational activities for the body.

I. The technical problem to be solved by the invention.

Conventional artificial feet cause high energy consumption when walking or running, and walking or running at high speeds can not effectively exercise due to instability and discomfort, resulting in limited time consumption and lack of exercise due to weight gain and basic life. There was a problem to receive.

All. Summary of the Solution of the Invention.

An artificial foot (A) consisting of a shaftless shape in which the foot joint angle is determined by weight, and the artificial foot (A) has a load on an unspecified road surface, and when the ground of the foot is grounded, a rotating joint is formed on the bend by compression. It is characterized by the smoothness of the dugchi cloud to increase ground responsiveness and to prevent the load on the body from being transferred to the will.

la. Important uses of the invention

Chopped artificial feet.

Description

Multi-functioning artificial foot

The present invention relates to a multifunctional artificial foot connected to an artificial will worn on the lower and femoral amputation patients, and more particularly, it is configured in an axle-free form in which the ankle angle is determined by weight during walking to distribute the load for unspecified road walking. The purpose of the present invention is to provide a multifunctional man-made foot that can be rotated by improving the stability and grounding force on the ground and reducing the ground resistance.

You will need to restore or improve your motor skills so that you can live a basic life for individuals with physical disabilities. In particular, the thigh or lower thighs should be able to stand safely on both sides of the road without any inconvenience.

In order to meet these needs, there have been many research and developments on artificial feet, and in particular, existing artificial feet have been developed as short-term artificial feet, SACH type, and multi-axial artificial feet as important factors for stability and stability of walking. In the multi-flex artificial foot using the composite material and the energy storage artificial foot using the characteristics of the elastic material have been developed and commercialized, which will be described in more detail as follows.

The above-mentioned shortened artificial foot is used for thigh cutters and both lower leg cutters, which are easy to bend the knee, and the advantages include easy alignment due to the front bumper, low cost, and easy adjustment of the strength of the rear bumper. There are some disadvantages, however, that abdominal stops are likely to occur suddenly, and it is difficult to adapt to an indefinite road surface.

The SACH artificial foot is used for standard lower cuts, and has advantages such as no noise, easy to wear, good appearance, light weight and low cost, but no limits on belly and low bends, and heel cushions Cushion) It is impossible to select the strength, it is easy to reduce the elasticity in the long-term use, the heel contact (heel contact) is easy to occur knee breakage.

The multi-axial artificial foot is used for the active lower leg cutters, and it has the advantages of easy handling of uneven roads, excellent mobility, and little discomfort to the cut site, but the price is high, the weight is heavy, It requires maintenance and adaptability, and has the disadvantage of generating noise and instability.

Therefore, the above-described artificial feet have a sense of stability but cause high energy consumption when walking or running, and walking or running at high speed can not exercise effectively due to instability and discomfort, resulting in time consumption or lack of exercise resulting in weight gain and The basic life has been restricted, and the need for improvement has been steadily raised.

In order to solve the above problems, a new concept of artificial feet, such as energy-saving artificial feet, has recently been developed to provide natural and stable walking for lower and femoral amputees, and to reduce energy consumption, thereby reducing recreational activity for the body. There is a possible advantage, but the price is expensive, there is a disadvantage in that there is a functional limitation.

Therefore, the development of a new concept of artificial feet, such as energy-saving artificial feet, allows for fast walking, jogging, a little mountain climbing, and fast running without any inconvenience, and it allows the amputated person to overcome the threatening circumstances while walking and mentally and physically. It is the first goal of developing energy-saving artificial feet to stably adapt to walking motion.

In order to achieve the above goal, the spring-back action is performed by using the elastic composite material of glass and carbon fiber system, and the kinetic energy at the time of toe-off is stored by storing the deformation potential energy that bends like a bow. This accumulated energy provided the artificial foot of Korean Patent Application No. 98-22609, which is the pre-applicant of the present applicant, which pushed the leg forward to push the body forward and smoothed the toe-off.

The above-described energy storage type artificial foot can pursue a natural walk to some extent without being severely restricted by active behaviors such as recreation, sports, hiking, etc., but the weight load is transmitted to the will. Problems, such as the problem that the squeegee movement due to the compression when the ground grounding is not smooth and the ability to respond to the negative road surface is falling.

The present invention has been made to solve the above-mentioned conventional problems, the object of the present invention is to configure the axis of the ankle joint in the axisless shape determined by the weight so as to distribute the load for unspecified road walking The purpose of the present invention is to provide a multifunctional artificial foot that improves stability and grounding force and reduces ground resistance to allow rotation.

Still another object of the present invention is to provide an artificial foot that enables smooth rotation by dividing the elastic durable material, improving stability and grounding force on the ground and reducing ground resistance during rotation.

Still another object of the present invention is to provide a artificial foot that allows a more comfortable walking by setting the hinge portion on the heel of the foot so that the load on the weight is not transmitted to the will portion.

1 is a perspective view according to an embodiment of the present invention.

Figure 2 is a cross-sectional view of a state in which the artificial foot and the elastic material of the present invention is combined.

Figure 3 is a sectional view of the heel cushion of the present invention compressed.

4 is a schematic diagram of a state adapted to an unspecified road surface.

Explanation of symbols on the main parts of the drawing

2: elastic material 4: heel guard

8: heel cushion 12: insert adapter

14: Plate 16: Tow Cushion

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in describing each of the drawings, the same components have the same reference numerals as much as possible even though they are shown in different drawings.

The basic principle of the multi-function artificial foot of the present invention is toe-off (Toe-off) by storing the deformation potential energy (keel) bent like a bow in the artificial foot due to the movement of the weight core when walking the stance phase At -off), the kinetic energy is rapidly converted. This accumulated energy pushes the legs forward and pushes the body forward, making it easier to walk with less energy.

In particular, toe-off prevents knee bending and generates forward propulsion (compensation for movement of the lower triceps and limb flexors). At this time, the angle of dormitory stop is about 85 ° of the angle between the plantar and the load line. Usually the design is determined based on the information obtained from the gait analysis, and the material is composed of carbon composites with static and dynamic stiffness characteristics that fit the weight range according to the test analysis data.

The polymer composite material used glass fiber (E-glass) and carbon fiber (PAN-based) as a reinforcing material, which has excellent mechanical properties. Uniaxial prepregs were used to improve axial strength when laminating glass fibers. Carbon fiber used woven fabric and prepreg like glass fiber.

The molding method was made by compression molding to change the lamination degree of the reinforcing material in order to control the degree of elasticity to produce an elastic material of glass fiber and carbon fiber type using epoxy resin.

The elastic limit of the elastic material may be represented by a load-displacement curve having a range of stiffness depending on the weight of the patient and the size of the foot.

The elastic limit according to the weight determines the flexural angle of the ankle joint, the position of the toe-break and the walking resistance. At this time, the angle of dormitory stop is about 85 ° of the angle between the plantar and the load line.

The present invention is determined on the basis of various information obtained from the gait analysis results, and the material is composed of carbon composite materials having static and dynamic characteristics corresponding to the weight range according to the test analysis data. Elastic materials have a smooth storage and spring back of walking energy according to body weight during the standing period, natural feeling and stability, durability of about 3 years, lightness and economy.

The artificial foot of the present invention is configured in an axle-free form in which the foot joint angle is determined by weight, and the artificial foot is formed by rotating the joint part in the bent portion by the compression of the load on the unspecified road surface and the grounding of the heel of the ground. It is characterized by the smoothness of the dugchi cloud to increase ground responsiveness and to prevent the load on the body from being transferred to the will.

As shown in FIG. 1, the artificial foot A of the present invention has an elastic member 2 formed to be inclined at an angle of approximately 19 ° to the front, and a heel guard 4 hinged to the rear end of the elastic member 2. The heel cushion 8 is mounted between the heel guard 4 and the elastic material 2 so that the load is transferred to the will while being able to flow around the hinge material so as to be able to flow therefrom, and the rear end of the elastic material 2 The upper surface of the plate (14) and the insert adapter (12) used for the connection and alignment of the will is laminated and mounted at the same time with the heel cushion (8) with the bolt (35) in-molded in the artificial foot (A) 31) by attaching the elastic material (2) to the bowl.

At this time, the toe cushion 16 is mounted between the plate 14 and the elastic material 2 to absorb shock while preventing friction between the elastic material 2 and the plate 14.

In addition, the elastic member 2 divides the front, that is, the front ridge portion of the elastic member 2 into two or three parts so as to distribute the load on the unspecified road surface, thereby improving stability and grounding force against the ground and improving ground resistance during rotation. It is reduced to enable smooth rotation.

In addition, the lower end of the heel cushion (8) mounted between the heel guard (4) and the elastic material (2) is divided into two so that there is no interaction of the foot heel portion is configured to be convenient for ground ground without affecting the ground direction of the foot heel .

An artificial foot (A) outer cosmetic cover that is coupled to the elastic material (2) and coupled by a fastening nut is made of polyurethane foam, and its function is cosmetically virtually indistinguishable from the actual Korean foot. In addition, the inside and outside and inside and outside of the artificial foot due to the free elasticity to improve the walking stability, to enhance the responsiveness to the uneven road surface, and to facilitate the absorption of lateral components and impact. In terms of appearance, the structure of the shell should be easy to attach and detach the shoes and the movement between the feet and the shoes should be as small as possible.

In addition, the artificial foot should be kept as light as possible, and have excellent strength and durability, and the bending moment (usually 2.5-4 times force repeatedly acts when walking) and the compression force of the bumper according to the road structure. The experiment was conducted. In addition, with emphasis on practicality, the structure is simple and the modular design makes the parts easy to repair.

According to the present invention configured as described above, the heel guard 4 is rotated by the hinge shaft 20 when the patient is grounded, and the heel cushion 8 is compressed at this time, thus smoothing the cloud of the grounding ground and smoothing the ground. You will increase your sex and your weight will not be transferred to your will.

In addition, the heel cushion 8 is divided into two so that the left and right interaction does not occur, it is convenient for grounding without affecting the grounding direction of the heel of the foot.

On the other hand, the unspecified road surface can be smoothly rotated by improving the traction while distributing the load and reducing the ground resistance during rotation, since the front of the elastic material 20 is divided.

The multi-functional artificial foot of the present invention is able to pursue natural walking without severely being restricted by active behaviors such as recreation, sports, climbing, etc. up to tens of thousands of people with femoral and lower thighs, especially made of glass and carbon fiber materials. It has confirmed the high functionality (energy storage and propulsion) of elastic materials and can provide a polyurethane foot cover with realistic beauty and function for Korean body shape.

Claims (4)

In a known artificial foot connected with an artificial will, an artificial foot (A) having an axisless shape in which a foot joint angle is determined by weight, and the artificial foot (A) is applied to a load on an unspecified road surface, and compression at the hind fold grounding. Multi-function artificial foot, characterized in that by forming a rotating joint part in the bent portion by smoothing the cloud of the dugchichi when grounding to increase the ground responsiveness and the load on the weight is not transmitted to the will. The method of claim 1, wherein the artificial foot (A) is an elastic member 2 formed to be inclined at an approximately 19 ° angle, and the heel guard (4) at the rear end of the elastic member 2 is hinged by a hinge shaft (20) The insert adapter used for connecting and aligning the plate 14 and the will to the heel cushion 8 between the heel guard 4 and the elastic material 2 and the upper surface of the rear end of the elastic material 2. Multi-functional artificial foot, characterized in that coupled to the artificial foot (A) by stacking (12) and mounted at the same time as the heel cushion (8) with the bolt (35). The front of the elastic member (2) is divided into two to three to distribute the load on the unspecified road surface, to improve the stability and grounding force on the ground and to reduce the ground resistance during rotation to enable smooth rotation Multifunctional artificial foot characterized in that. The multi-functional artificial foot according to claim 2, wherein the lower end of the heel cushion (8) is divided to eliminate the interaction of the foot heel portion so that the grounding is convenient without affecting the grounding direction.