JPS6150553A - Electrode for detecting muscle potential signal - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to an electrode for detecting myoelectric potential signals.

Myoelectric potential signals are obtained by detecting, through electrodes, changes in potential that propagate on muscle fibers, for example, when a muscle attempts to contract or relax. Conventionally, an electrode with a circular detection surface has been used as an electrode that is attached to the skin surface of the muscle to be measured in order to detect such myoelectric potential signals. The size of such a circular electrode is as large as 17 cm in diameter, and as small as several 11 cm in diameter.
No, but if a large electrode is used, that electrode will detect the first positions of multiple muscle fibers by averaging them, so tl! It is not suitable for precise measurements such as JTL conduction velocity measurement or myocardial potential frequency analysis, and small diameter electrodes limit the measurement range.
When investigating the t-position distribution on the skin, it is necessary to fit a large number of 'TL poles, resulting in stone production; 7. It becomes complicated.

- The first invention solves the above-mentioned problems, enables precise measurements such as measurement of myoelectric conduction velocity and frequency analysis of myoelectric potential, and prevents stones from forming on the skin surface of the TL pole. Very easy f! The present invention aims to provide an i3 potential signal detection electrode.

In order to achieve the above object, the electrode for detecting the muscle '; f. All 5 is made by embedding a number of linear electrodes oriented in a direction perpendicular to the muscle fiber direction in a young support body in a cylindrical shape in parallel with the muscle fiber direction. Ru.

According to such a myoelectric potential signal detection electrode, a large number of linear electrodes oriented in a direction perpendicular to the muscle line Xd direction are attached by a support in a manner that they are arranged in parallel along the muscle fibers, Therefore, it is possible to measure the conduction velocity of myoelectric potential and to determine the frequency of myocardial potential with precision such as analysis, and at the same time, it is possible to attach a large number of electrode pieces to the skin surface! It can be done easily.

Embodiments of the present invention will be described in detail below with reference to the drawings.

In FIG. 1 showing an embodiment of the electrode according to the present invention, l is a support made of an insulating material with beam flexibility, 2 is an electrode piece buried in the exposed state, and the support l is the object of measurement. By being pressed against the skin surface on a certain muscle, the support 1 is deformed by being brought into contact with the skin surface, so that each electrode piece 2 can be brought into close contact with the skin surface. The electrode pieces 2 are constructed as linear pieces with a width of D and a length of L, and these electrode pieces 2 are arranged vertically and horizontally at predetermined intervals S and C in the same direction, so that the skin 1 : When mounting on the '7 plane, multiple rows of electrode rows 3 are formed that are continuous in the direction of the muscle fibers.

When the electrode configured as described above is pressed against the skin surface on the muscle fibers to be measured, the 4S electrode piece 2 makes a sound on the skin surface 1'jj as the support 1 deforms. In this case, by aligning the direction of the electrode rows 3 with the direction of muscle fibers, the electrode pieces 2 in each electrode row 3 can maintain the direction perpendicular to the muscle fibers and are connected to the muscle fibers. Therefore, the myoelectric potential in the muscle fibers is detected by the electrode pieces 2 in the electrode array 3.

Note that the support 1 may be configured in advance in a shape that matches the shape of the muscle to be measured.

FIG. 2 shows an example of a different arrangement of electrode pieces,
Adjacent electrode rows 13 are shifted from each other by half of the electrode spacing S, and each electrode row 13 is arranged so that there is no gap between them.

In the electrode shown in Figure 1, since the electrode pieces are lined up in a straight line between adjacent rows, it is easy to compare the potentials between each electrode row. In this case, since the electrode pieces in adjacent electrode rows are shifted, the skin can be measured with the electrodes without any gaps.

FIG. 3 shows an example of myoelectric potential No. 6 detected by one RI pole array. As an electrode, L =
ioam, D = 1 m using that stainless steel wire,
As is clear from the 0m diagram, which detects and amplifies the potential difference between adjacent electrodes as a 12-channel electrode array arranged at an interval of 5=5z=, if the electrode array with the above configuration is used, the muscle The electric potential is measured as it propagates on the fiber without changing its waveform.

18 of this invention! According to the method, a large number of electrode pieces can be attached extremely easily to the skin I+ surface, and the myoelectric potential can be detected individually and accurately.

[Brief explanation of drawings]

FIG. m1 is a plan view of an embodiment of the present invention, FIG. 2 is an explanatory diagram showing an example of disposing different types of electrode pieces, and FIG. 3 is a diagram showing an example of a myoelectric potential signal detected by an electrode array. l...support, 2...electrode, 3.13...1u pole array. Designated Representative Agency of Industrial Science and Technology Products, Scientific Research Institute Director Keiji Takahashi

Claims (1)

[Claims] 1. A large number of linear electrodes oriented in a direction perpendicular to the muscle fiber direction are embedded in a support body that can be brought into close contact with the skin surface on the muscle fibers, in parallel with the muscle fiber direction, in an exposed state. Electrodes for detecting myoelectric potential signals.