CN101416908B - Carbon fiber double-side elastic all-terrain artificial feet plate - Google Patents

Abstract

The invention relates to a carbon fiber double-elastic all-terrain prosthetic foot plate, which includes a connection structure, and is characterized in that: it also includes a double lower plate, an upper plate, a U-shaped front keel, a U-shaped rear keel, and a connection between the upper plate and the double lower plate. U-shaped front keel and U-shaped rear keel are fixedly connected between them, and the openings of the U-shaped front keel and U-shaped rear keel structure are all backward; it is used when the heel transitions from the load-bearing period to the ground-off period, and the forefoot transitions from the load-bearing period When transitioning to the lift-off period, the U-shaped rear keel and the U-shaped front keel will respectively release their own stored energy to help the prosthetic foot complete the push-off action. The invention has the characteristics of high strength, light weight, good elasticity, comfortable walking and the like.

Description

Carbon fiber double elastic all-terrain prosthetic foot plate

technical field

The invention relates to a prosthesis, in particular to a double elastic all-terrain prosthetic foot plate (commonly known as a keel). The prosthetic foot plate can make the wearer walk more easily and is close to the walking gait of a normal person.

Background technique

Since the weight of the prosthesis has a direct impact on the energy consumed by the movement of the lower limb amputee patient, it will affect the effect of the patient wearing the prosthesis. Therefore, in the process of designing and manufacturing prosthetic parts, it is necessary to fully consider the functions required by the patient. Whenever possible, choose lower body accessories that are lightweight and reduce physical exertion. As an important component of the lower limb prosthesis, the main function of the prosthetic foot is to support the body weight and compensate the triceps and flexors of the calf during exercise to maintain the normal walking posture of the body. For the lower limb amputee, the weight and function of the prosthetic foot will directly affect the walking condition of the amputee, thus determining the quality of the prosthesis to a large extent. Especially for patients who are elderly, poor in physical strength, or amputated due to blood circulation disorders, if the weight of the artificial limb is too large, it will cause excessive stress on the residual limb, increase the burden on the healthy limb side, and even cause double Leg amputation, with adverse consequences. Therefore, how to realize the lightweight of the prosthetic foot on the basis of ensuring the function of the prosthetic foot has attracted extensive attention of researchers.

At present, the inner skeleton of the prosthetic foot is generally made of wood, rubber, etc., and a few use carbon fiber with high strength and light weight, but the structural design is not very ideal, making the wearer still feel uncomfortable when walking. Although some advanced carbon fiber products have been introduced abroad, they are expensive and unsuitable for the consumption of amputees, and the structure still needs to be improved.

Contents of the invention

The purpose of the present invention is to overcome the above disadvantages and provide a carbon fiber double-elastic all-terrain prosthetic foot plate with high strength, light weight, good elasticity and comfortable walking.

To achieve the above object, the present invention adopts the following design scheme:

A carbon fiber double-elastic all-terrain prosthetic foot plate, including a connection structure, is characterized in that it also includes double lower plates, an upper plate, a U-shaped front keel, and a U-shaped rear keel, and a U is used between the upper plate and the double lower plates. The U-shaped front keel and the U-shaped rear keel are fixedly connected, and the openings of the U-shaped front keel and the U-shaped rear keel structure are all backward; it is used when the heel transitions from the load-bearing period to the ground-off period, and the forefoot transitions from the load-bearing period to the ground-off period During transition, the U-shaped rear keel and the U-shaped front keel will respectively release their stored energy to help the prosthetic foot complete the push-off action.

The double lower plate and the upper plate are arc-shaped structures that imitate the normal foot plate, and the double lower plate is composed of two identical bionic arc-shaped structural plates, with a toe gap in the middle, so that the artificial foot can automatically adapt to the uneven road surface structure, enhancing the safety and functionality of the prosthetic foot.

The lower ends of the U-shaped front keel and the U-shaped rear keel are provided with notches, and are connected with the double lower plates through the notches.

There is a protrusion in the middle part of the double lower plate, so that the wearer of the prosthetic foot will make the gait more stable and graceful in the process of walking, whether it is transitioning from the landing period to the load-bearing period, or from the load-bearing period to the ground-lifting period ,nature.

The present invention has the following advantages:

1. When the heel transitions from the grounding stage to the load-bearing stage, the U-shaped rear keel with the opening facing backward is compressed, which can absorb the impact force generated when the heel is in contact with the ground, thereby reducing the impact on the residual limb, knee joint, hip joint and spine At the same time, the compressed U-shaped rear keel can store energy. When the heel transitions from the load-bearing phase to the ground-off phase, the U-shaped rear keel rebound releases energy to help the heel complete the ground-off action.

2. In order to minimize the energy loss in each gait cycle and improve the energy storage ratio of the prosthetic foot, a U-shaped front keel with an opening facing backward is designed on the forefoot. When the heel is off the ground, the forefoot is on the ground During the transition from the load-bearing period to the load-bearing period, the U-shaped front keel is compressed and stores energy. When the front sole transitions from the load-bearing period to the ground-leaving period, the U-shaped front keel rebounds and releases energy to help the forefoot complete the lift-off action. In this way, the energy loss of each gait cycle can be minimized, so that the wearer will not feel tired even when performing outdoor activities for a long time.

3. In terms of the design of the lower plate of the prosthetic foot, two identical bionic arc-shaped structural plates are used, so that the prosthetic foot has the characteristics of split toes, which can automatically adapt to the rough road structure, and enhance the safety and function of the prosthetic foot sex.

4. Both the front and rear surfaces of the two lower boards adopt a curved structure, and the middle part has a protrusion, so that the wearer of the artificial foot can make the transition from the landing period to the load-bearing period, or from the load-bearing period to the ground-lifting period during walking. The transition between periods is a dynamic transition, and the gait will be more stable, graceful and natural.

5. The main structure of the entire prosthetic foot core is made of carbon fiber composite material with light weight, high strength and long life, which conforms to the design concept of ensuring the function of the prosthetic foot and realizing the lightweight of the prosthetic foot.

Description of drawings

Fig. 1 is a structural front view of the present invention;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is the top view of Fig. 1;

Fig. 4 is a perspective view of the structure of the present invention.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in Figures 1 to 4, a carbon fiber double-elastic all-terrain prosthetic foot plate is composed of a double lower plate 1, a U-shaped front keel 2, a U-shaped rear keel 3, an upper plate 4 and a connecting structure 5. The connecting structure 5 is made of metal materials, and other structures are made of carbon fiber composite materials. The double lower boards and upper boards are arc-shaped structures that imitate normal foot boards. Between the upper and lower boards are U-shaped front keels and U-shaped rear keels, and the openings of the U-shaped structures are all backward. The upper end of the connection structure 5 is connected to the ankle joint, and the upper plate and the U-shaped rear keel are connected through the lower end of the connection structure 5, and the connections of other structures are bonded together by adhesive. Through the joint effect of the U-shaped front and rear keels with the opening backward, the artificial foot can easily complete the whole push-off action.

The lower ends of the U-shaped front and rear keels are notch structures so as to be connected with the two lower plates. The two lower panels have exactly the same bionic arc structure, with split toes, which can make the prosthetic foot automatically adapt to the rough and uneven road structure, thus helping the wearer to walk naturally under different road conditions and enhancing the safety of the prosthetic foot and functionality. In addition, the front and rear surfaces of the two lower boards are all arc-shaped, and the middle part has a protrusion, so that the wearer of the prosthetic foot can make the transition from the grounding period to the bearing period, or from the bearing period to the lifting period, during walking. Period transition will make the gait more stable, graceful and natural.

Claims (4)

1. carbon fiber double-side elastic all-terrain artificial feet plate, comprise syndeton (5), it is characterized in that, also comprise two lower plates (1), upper plate (4), U-shaped antitrope (2), Os Draconis behind the U-shaped (3), fixedly connected with Os Draconis (3) behind the U-shaped with U-shaped antitrope (2) between described upper plate (4) and the two lower plates (1), and behind U-shaped antitrope (2) and the U-shaped Os Draconis (3) structure opening all backward; Be used for when heel from weight-bearing phase to liftoff phase transition and forefoot from weight-bearing phase during to liftoff phase transition, Os Draconis behind the U-shaped (3) and U-shaped antitrope (2) will discharge self energy stored respectively, help false foot to finish and push off action.

2. carbon fiber double-side elastic all-terrain artificial feet plate according to claim 1, described pair of lower plate (1) and upper plate (4) are the arcuate structure of the normal sole of imitation, wherein, two lower plates (1) then are made up of two blocks of identical bionical arcuate structure plates, between two lower plates, leave the branch interdigit, described minute interdigit makes false foot adapt to rugged pavement structure automatically, strengthens the safety of false foot and functional.

3. carbon fiber double-side elastic all-terrain artificial feet plate according to claim 1, the lower end of Os Draconis (3) all has gap behind described U-shaped antitrope (2) and the U-shaped, and is connected with two lower plates (1) by gap.

4. carbon fiber double-side elastic all-terrain artificial feet plate according to claim 1 and 2, the mid portion of each piece lower plate of described pair of lower plate (1) all is provided with projection, the wearer that makes false foot in the process of walking, no matter be from the phase of landing to the weight-bearing phase transition, or to liftoff phase transition, all can make gait more steady, graceful, natural from weight-bearing phase.