Magnetic-resonance-compatible electromechanical stimulation device for simulating pressure of human gait to foot sole

Abstract

The invention discloses a magnetic-resonance-compatible electromechanical device used for simulating the pressure of human gait to a foot sole. The technical scheme is as follows: 1, the magnetic-resonance-compatible electromechanical device is composed of an air pressure power module, a control module and a gait pressure analog module, wherein the air pressure power module is driven by electricity, the control module is driven by 24V voltage, and the gait pressure analog module is driven by high-pressure air; 2, all the components of the gait pressure analog module are made of a nonferromagnetic material; 3, the air pressure power module and the control module are placed outside a magnetic resonance scanning space, and the gait pressure analog module is placed in the magnetic resonance scanning space; 4, special parameters are set, and a pressure stimulation straight panel, driven by an air cylinder, of the gait pressure analog module stimulates the tested foot sole. The magnetic-resonance-compatible electromechanical device can effectively simulate the sole pressure change of the human gait, is compatible with the magnetic resonance environment, and allows a tested person to receive the foot sole stimulation in the stationary lying posture.

Description

Technical field [0001] The invention relates to an electromechanical device used for simulating the pressure of a human gait on the sole and compatible with magnetic resonance, belonging to the technical field of electromechanical integration products. Background technique [0002] Magnetic resonance imaging (Magnetic Resonance Imaging, MRI), also known as MRI, uses the principle of nuclear magnetic resonance to detect the emitted electromagnetic waves by applying a gradient magnetic field, thereby presenting an image of the internal structure of the tissue. The functional MRI technology developed on this basis can not only locate brain activation, but can also be used to study the dynamic changes of brain activity and its network functions, which greatly promotes medicine, neurophysiology and cognitive neuroscience development of. [0003] Gait refers to the posture and behavior characteristics of the human body when walking. The human body moves the body in a certain direction t...

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Problems solved by technology

[0004] People have always wanted to understand how the brain function control network works under the state of human walking, but they are faced with two problems: one is traditional electronic equipment (such as the gait generator of Zhang Yanan et al., utility model patent authorization announcement number CN202719099 U ) cannot work normally in the magnetic resonance work room, because the ultra-strong magnetic field in the magnetic resonance scanning room is as high as 1.5T ~ 7T, which will inevitably lead to the unusable metal devices such as wires and motors included in traditional electromechanical equipment; second, the current magnetic Resonance equipment must require the subject to lie motionless on the scanning table, but the traditional gait simulation device requires the subject to stand and move (such as the gait rehabilitation training robot control system of Song Quanjun et al., invention patent application publication number CN 102225034 A) , it is difficult to effectively simulate the plantar pressure of human walking in the MRI scan room

The plantar single-point stimulator of Hao Ying et al. (see Hao, Y., Manor, B., Liu, J., Zhang, K., Chai, Y.F., Lipsitz, L., Peng, C.K., Novak, V. ,Wang,X.Y.,Zhang,J.,Fang,J.(2013)Novel MRI-Compatible Tactile Stimulator for Cortical Mapping of Foot Sole Pressure Stimuli with fMRI.Magn Reson Med,69:1194-1199) Although it can be compatible with the magnetic resonance environment, However, it can only stimulate the sole of the foot at a single point, and cannot simulate the change of the plantar pressure of the human gait.

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