H-40

H-40Z intelligent pneumatic knee joint

technical parameter

Excluding battery barrel joint height: 253 millimeters

Including battery barrel joint height: 308 millimeters

Left and right joint width: 58.5 millimeters

Joint depth before and after: 85 millimeters

Four sided pyramid adjustment: 5 millimeters

Total weight of knee joint: 1.2kg

Maximum load capacity: 100kg

Knee flexion angle: 145o

Battery brand: MCOBEAM lithium battery

Battery model: 18650 3400mAh 3.7V

Battery life: 1 year

Joint Introduction

The intelligent pneumatic knee joint (H-40Z) is a combined four axis pneumatic knee joint that can automatically adjust the joint swing rhythm. Its main feature is that the joint can automatically adjust the joint's motion damping according to the user's step and gait changes through its own intelligent control system, to change the joint swing speed, making it better conform to the user's step speed and gait, and enabling the user to obtain a more natural and good gait.

This joint intelligent control system consists of a power subsystem, a sensor subsystem, a central processing unit, and a control execution mechanism.

The sensor system obtains real-time gait information from the user and sends it to the central processing unit for interpretation, judgment, optimization. The final processing result is sent to the control actuator and drives the electronic damping valve to adjust the joint speed. The entire process is automatically completed, and the perfect combination of software and hardware enables patients to completely get rid of the troubles of prosthetics.

Due to the combined four axis structure used in the joint, its multi axis characteristics allow it to have both translational and rotational movements simultaneously, making it closer to the motion characteristics of the human knee joint. The combined four axis knee joint, due to the motion characteristics of its four-bar linkage structure, has its rotation center located above the joint and behind the load-bearing line when the knee joint is extended, ensuring the stability of the knee joint. In addition, the four sided pyramid of this joint has a 5mm adjustment in the anterior posterior direction (sagittal plane) to improve the stability and flexibility of the joint. The technician can adjust it according to the actual situation of the user to achieve maximum satisfaction. When the knee joint flexes, the center of rotation rapidly decreases with the flexion and returns to the usual knee axis position, which is beneficial for the user's leg flexion movement. When crossing the lowest point, the knee joint will remain flexed, allowing the user to maintain a sitting position.

In order to overcome the impact vibration caused by knee joint extension, this joint has a buffer chamber specially designed to control the impact force by adjusting the buffer regulating valve, making the user feel more comfortable.

The intelligent control system installed in this joint is powered by a dedicated battery. It can automatically recognize changes in the user's pace, adjust the opening of the air valve, and make the knee joint swing speed change according to the user's gait. Users feel that as they move faster, their joints increase in damping and elasticity, making joint flexion more difficult and stretching and returning faster; When walking slower, the damping decreases, making it easier for the user to walk. Due to the fast following feature of intelligent control, the knee joint can keep up with the user's brisk walking and move smoothly and steadily during slow walking, truly achieving freedom of movement