NEWS CENTER

NEWS CENTER

Specializing In The Import And Export Trade Of Prosthetics And Orthotics Products

06

2021-11

Prosthetic hand manipulation training

Prosthetic hand manipulation training     Opening and closing hand training: The cable-controlled prosthetic arm is opened by relying on the shoulders to bend forward, and the prosthetic hand is closed by elastic force when there is no force. The upper arm cable control prosthetic hand must lock the elbow joint in order to open the hand. Forearm electromyographic prostheses are often used by amputees to perform phantom limb exercises to forcefully open the hand, extend the wrist to control the opening of the hand, forcefully flex the fingers, and bend the wrist to control the closing of the hand.   Prosthetic use training: The function of the human hand is a complex sensory feedback, a process of coordinated muscle movement. If the artificial hand function is really required to have practical value, it must be carefully trained.   The myoelectric prosthetic hand is driven by a micro DC motor through a gear transmission mechanism to assist the fingers of the patient's hand movement. It is characterized in that: two EMG signal collection electrodes are set to fit the area where the EMG signal of the patient's arm is relatively active, and the EMG signals representing the opening and closing of the fingers are collected respectively, and the two EMG signals are input to the device including The control module, including the single-chip microcomputer and the motor drive circuit, outputs the opening and closing signals of the prosthetic hand by the single-chip microcomputer. The micro DC motor is driven to rotate forward or reverse through the motor drive circuit, and the prosthetic hand is closed or opened through the gear transmission mechanism, thereby driving the patient's hand. The department does opening and closing movements. Therefore, correctly placing the EMG sensor on the part with strong EMG signal selected by the technician is the most important point for the flexible use of EMG prosthetic hands.     SHIJIAZHUANG AOSUO O&P  

Nov 06,2021

02

2021-11

Prosthetic Hand

Prosthetic Hand   The hand is the most distinctive organ of the human body, and the human hand is the perfect tool that nature can create. At the same time, the rehabilitation of hand amputation is also the most difficult problem in the field of artificial limb rehabilitation, because the function of the hand is obviously superior to that of the lower limbs. Human fingers are very sensitive and can feel vibrations with an amplitude of only 0.00002 mm. There is a long way to go to achieve such an effect. With the development of science and technology, the rehabilitation of hand amputation patients has also improved. At present, there are two main programs for hand prosthetic rehabilitation, decorative and functional. So, how can patients with such prostheses use prosthetic hands flexibly?     1) Decorative prostheses, generally as long as the residual limb receiving cavity is suitable, the suspension device is no problem, and no training is required, but the first-time installer should learn how to wear it, passively rotate the wrist, and passively change the position of the finger. Those with upper arm amputees should learn to use passively controlled elbow locks.       2) Cable-controlled upper limb prostheses and electric upper limb prostheses (including myoelectric prostheses) are all functional prostheses. The difference is that the former is self-powered while the latter is external power. In order to improve the use function of these prosthetic limbs, proper guidance and training are needed.   SHIJIAZHUANG  AOSUO O&P  

Nov 02,2021

27

2021-10

Suitable conditions for prosthetic

Suitable conditions for prosthetic   First, the overall condition of the residual limbs should not be too poor, with good skin and soft tissue conditions, normal skin feeling, no deformity, unrestricted joint movement, no neuralgia or phantom limb pain. The residual limbs should also be of enough length   Second, to ensure the effective length of the limb, the stump limb should have reasonable soft tissue at the end. The ends of the stump bones can be moderately trimmed, such as sub-knee amputees, with the fibula shorter than the tibia to avoid excessive pulling force on the skin.   Also, bone repair during surgery with good muscle fixation is the basis. In addition, patients receiving gradual rehabilitation treatment as soon as possible is an important way to achieve residual limb shaping and skin adaptation, which is helpful to lay a foundation for self-care and work in the future.   SHIJIAZHUANG AOSUO O&P

Oct 27,2021

25

2021-10

Minimum standard for amputee

Minimum standard for amputee   The minimum standard for amputees is actually light, labor-saving, safe and comfortable. Lightweight refers to: the joint itself weight is low, the alloy knee joint we now import is to choose light and durable, and prosthetic accessories, acceptance cavity every link should be in line with the principle of reducing the prosthetic weight to choose. Labor saving refers to: we want to choose air pressure or hydraulic power knee joint. Safety refers to: the knee joint with geometric lock, or load-lock knee, manually unlocked knee joint, etc., this kind of knee joint can let patients alternately downstairs, down the slope, bus, steps will not fall. You think about walking without worry, do not worry about falling down, can let go of the courage to walk, so that gait is more natural. Comfortable refers to the adaptation of the cavity and residual limbs. The technology of accepting the cavity is very important, do a good job of patients not stuck, gait naturally, go further.

Oct 25,2021

22

2021-10

The attention for installing the thigh prosthesis

 The attention for installing the thigh prosthesis      Patients with thigh amputations generally choose prosthetic limbs according to the length of the residual limbs, and hydraulic joints are suitable for patients with knee amputation. With medium and long residual limbs can choose a number of joints, air pressure or hydraulic four-link air pressure knee joint or multi-axis geometric lock knee joint can be selected. The short stump must be locked with a multi-axis air pressure or hydraulic knee joint.    Today, take you to understand the prosthetic knee joint. All the knee joints are mechanical joints, increasing the air pressure, hydraulic, intelligent control unit on the mechanical joint is the air pressure knee joint, hydraulic knee joint and intelligent knee joint. Some knee joints also have a multi-axis geometric lock or a single bearing heavy self-locking device.    According to the length of the residual limb, the shape of the amputation level is different, whether there is skin grafting needs to look at the residual limb first, and then the suitable prosthetic assembly scheme is recommended within the scope of the patient's purchasing power. The walking gait is also related to the patient's age, weight, living environment and the level of the technician when the prosthetic limb was first assembled.   SHIJIAZHUANG AOSUO O&P  

Oct 22,2021

20

2021-10

Weight affects prosthetic comfort

Weight affects prosthetic comfort Some patients and editors reported that the feet are a bit hard, and the experience is not as good as before. Here, the editor will explain in detail the relationship between weight and prostheses. Every lower limb prosthesis has a weight-bearing range. If the weight is higher than the weight of the prosthesis, it is easy to cause damage to the prosthesis, and the weight is too much below the weight-bearing limit. Some phenomena such as hard feet will occur. The prosthetic master’s suggestion is that the weight of the fitted prosthesis exceeds the limit of the prosthesis by about 20 kg, because the weight of the user of the prosthesis must not be higher than the weight limit of the prosthesis, then the weight of the patient must be below the limit of the prosthesis, too much, too little. It's not so good. It is best for prosthetic patients to take a scientific and reasonable degree. For the prostheitc foot plate, weight is not the main factor determining the comfort of the prosthesis. Because each calf prosthesis has a different design and different forces, the people who use it are also different. For example, some comfortable calf prosthetic feet, as long as the patient's weight is within the maximum weight-bearing range of the foot, regardless of the patient's weight distance and the maximum weight-bearing amount, it will not affect the comfort, because it is designed for the patient to use the calf prosthesis very comfortable . However, some energy-storing feet are different. It is designed to compress the feet through suitable gravity for the patient to walk, and the feet will then generate reaction forces to make the patient walk more easily. The greater the weight, the greater the reaction force, but the greater the weight, the easier it is to damage the prosthesis, so at this time, the patient's weight must be carefully considered to fit the standard of the prosthesis. shijiazhaung aosuo o&p

Oct 20,2021

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