Flexible powered below-knee prosthesis

Abstract

The invention relates to a flexible powered below-knee prosthesis which is characterized by comprising a prosthesis foot and a prosthesis shank. The prosthesis foot comprises an upper foot made of carbon fiber boards and a heel elastic sheet. The front of the heel elastic sheet is disposed at the middle bottom of the upper foot. An elastic moving space is arranged between the rear of the heel elastic sheet and the upper foot. A support is disposed on the top surface of the upper foot. The prosthesis shank comprises a shell which simulates the shape of a human shank. A motor is fixed in the shell. An output end of the motor is connected with a screw. The screw is connected with a screw sleeve through threads. The bottom end of the screw sleeve penetrates out of the shell and is connected to the top surface of the upper foot. A support column is disposed on the support of the upper foot. The flexible powered below-knee prosthesis is light, flexible, ingenious in ankle design, and widely applicable to various amputation patients.

Description

technical field

[0001] The invention relates to a below-knee prosthesis, in particular to a flexible dynamic below-knee prosthesis based on composite materials. Background technique

[0002] Below-the-knee prostheses currently in use are mainly divided into passive prostheses and active prostheses. The ankle joints of passive prostheses use single-axis ankles or universal ankle joints. The existing problem is that the walking speed cannot follow the amputee's walking speed naturally and freely. And changes, patients are often forced to lean forward to make up for the lack of propulsion ability, making amputee more likely to feel fatigue; active prosthetics are driven by motors, which can provide enough energy for the body to move forward, so as to realize the natural gait of the human body, but The current active prosthetics are relatively simple in terms of ankle prosthetic design, which cannot well meet the needs of users.

[0003] In addition, most of the prosthetic feet...

Examples

Embodiment 1

[0018] Such as figure 1 , figure 2 As shown, the present invention includes a prosthetic foot 1 and a calf prosthesis 2, and may also include a foot cover 3 wrapped outside the prosthetic foot 1.

[0019] The prosthetic foot plate 1 of the present invention comprises an upper foot plate 11 and a heel elastic piece 12, the front portion of the heel elastic piece 12 is fixedly connected to the middle part of the bottom surface of the upper foot plate 11, and there is an elastic movable space between the rear portion of the heel elastic piece 12 and the upper foot plate 11 , The top surface of the upper foot plate 21 rear portion is provided with a seat 13 .

[0020] Such as image 3 As shown, the foot plate 11 and the heel shrapnel 12 are both made of carbon fiber boards. The carbon fiber boards are made of carbon fiber cloth through the lay-up design of the prior art. The thickness of each section of the carbon fiber board is uniform and the surface is smooth. However, the ...

Embodiment 2

[0023] Such as Figure 4 As shown, this embodiment is basically the same as Embodiment 1, and its difference from Embodiment 1 is that not only a support 13 is provided on the top of the upper foot plate 11, but another support 14 is also provided behind the support 13. . When the bottom end of the screw sleeve 26 passes through the housing 21, it is not fixedly connected to the top of the upper foot plate 11, but hinged on the support 14. This can make the movement between the prosthetic foot plate 1 and the calf prosthesis 2 more flexible.

[0024] In the above two embodiments, if figure 2 As shown, a foot cover 3 corresponding to the shape of the human foot can be arranged on the outside of the prosthetic foot plate 1. The foot cover 3 can be made of polyurethane material, which has properties such as corrosion resistance, wear resistance and electrical insulation.

[0025] In the above embodiments, the motor 23 has an independent power supply device, and the output sha...

technical field

[0001] The invention relates to a below-knee prosthesis, in particular to a flexible dynamic below-knee prosthesis based on composite materials. Background technique

[0002] Below-the-knee prostheses currently in use are mainly divided into passive prostheses and active prostheses. The ankle joints of passive prostheses use single-axis ankles or universal ankle joints. The existing problem is that the walking speed cannot follow the amputee's walking speed naturally and freely. And changes, patients are often forced to lean forward to make up for the lack of propulsion ability, making amputee more likely to feel fatigue; active prosthetics are driven by motors, which can provide enough energy for the body to move forward, so as to realize the natural gait of the human body, but The current active prosthetics are relatively simple in terms of ankle prosthetic design, which cannot well meet the needs of users.

[0003] In addition, most of the prosthetic feet...

Examples

Embodiment 1

[0018] Such as figure 1 , figure 2 As shown, the present invention includes a prosthetic foot 1 and a calf prosthesis 2, and may also include a foot cover 3 wrapped outside the prosthetic foot 1.

[0019] The prosthetic foot plate 1 of the present invention comprises an upper foot plate 11 and a heel elastic piece 12, the front portion of the heel elastic piece 12 is fixedly connected to the middle part of the bottom surface of the upper foot plate 11, and there is an elastic movable space between the rear portion of the heel elastic piece 12 and the upper foot plate 11 , The top surface of the upper foot plate 21 rear portion is provided with a seat 13 .

[0020] Such as image 3 As shown, the foot plate 11 and the heel shrapnel 12 are both made of carbon fiber boards. The carbon fiber boards are made of carbon fiber cloth through the lay-up design of the prior art. The thickness of each section of the carbon fiber board is uniform and the surface is smooth. However, the ...

Embodiment 2

[0023] Such as Figure 4 As shown, this embodiment is basically the same as Embodiment 1, and its difference from Embodiment 1 is that not only a support 13 is provided on the top of the upper foot plate 11, but another support 14 is also provided behind the support 13. . When the bottom end of the screw sleeve 26 passes through the housing 21, it is not fixedly connected to the top of the upper foot plate 11, but hinged on the support 14. This can make the movement between the prosthetic foot plate 1 and the calf prosthesis 2 more flexible.

[0024] In the above two embodiments, if figure 2 As shown, a foot cover 3 corresponding to the shape of the human foot can be arranged on the outside of the prosthetic foot plate 1. The foot cover 3 can be made of polyurethane material, which has properties such as corrosion resistance, wear resistance and electrical insulation.

[0025] In the above embodiments, the motor 23 has an independent power supply device, and the output sha...

Images