JPH02271829A - Electrode for deciding myocardial infarction - Google Patents

Abstract

PURPOSE:To make working and manufacture of an electrode easy and to improve reliability for contact between the electrode and a body by forming a head part to be a spherical rivet type, composing the upper half part of the head part of Ag, Ag alloy or Au alloy, composing a leg part of Cu or Cu alloy, coating a whole surface with Au, and coupling a lead wire to the leg part. CONSTITUTION:A head part 6 is formed to be the spherical rivet type and the upper half part of the head part is composed of the Ag, Ag alloy or Au alloy. Then, the leg part is composed of the Cu or Cu alloy and the whole surface is coated with the Au. Further, a terminal 8a of a lead wire 8 is inserted to a bottomed hole 7a, which is bored in a center on the bottom surface of a leg part 7, and temporarily fastened and the lead wire is coupled. By fitting the leg part 7 to a silicone ring 10 and holding the leg part to a net 2, the leg part can be easily fitted to an electrode 9 for deciding myocardial infarction. Since the shape of this electrode 9 is the rivet type having the spherical head part 6, the stable contact can be kept even to a complicated shape in the body of a patient. Further, since a part contacting the body, namely, the head part 6 is composed of the Ag with a satisfactory contact characteristic and the light and soft Cu, the reliability of the contact is high.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to an electrode for determining myocardial infarction.

(Prior art) As shown in FIG. 4, a large number of electrodes 1 for determining myocardial infarction are attached to a net 2, and the heart region of the body is covered with the net 2.
This is for specifying a defective part of the heart by passing a measuring current through the electrode 1 for determining myocardial infarction.

Conventionally, the electrode 1 for determining myocardial infarction includes one in which a spherical contact body 4 made of Ag5Pt, Au, etc. is attached to the tip of a wire 3 as shown in FIG. A hook-shaped contact body 5 made of Ag1PtSAu or the like is attached to the tip thereof.

(Problems to be Solved by the Invention) In the electrode 1 for determining myocardial infarction having the structure shown in FIGS. 5 and 6, it is difficult to process the contact body 4.5, and the structure for attaching it to the net 1 is complicated. there were.

Therefore, a mounting jig to the net 1 is required, which increases the weight and puts a burden on the heart. Furthermore, it is extremely troublesome to replace the electrode with one of an arbitrary size depending on the size and shape of the heart.

Therefore, the present invention is easy to process and manufacture, can be easily attached to a net, and can be attached in place of a heart of any size depending on the size and shape of the heart. The present invention aims to provide an electrode for determining myocardial infarction that can make stable contact with patients.

(Means for Solving the Problems) To solve the above problems, the myocardial infarction window electrode of the present invention is made into a rivet type with a spherical head, and the upper half of the head is made of Ag, Ag alloy, etc. It is made of one of Au alloys, the legs are made of Cu or Cu alloy, the entire surface is plated with Au, and lead wires are connected to the legs.

(Function) Since the electrode for determining myocardial infarction of the present invention is constructed as described above, it is easy to process and manufacture, the contact part with the body has high contact reliability due to the material, and has a spherical head shape. The rivet type allows it to maintain stable contact even with the complex shapes of the body. Also, to install, fit the legs into the silicone rings,
Easy to install by simply securing the silicone ring to the net.

(Example) An example of the electrode for determining myocardial infarction of the present invention will be described with reference to the drawings. As shown in FIG. 1, the head 6 has a diameter of 3fflI1
1 height ll1I11, the upper surface is made into a spherical surface of lQmmH, the leg part 7 is molded into a rivet type with a diameter lam and a length 1.5mm, and the upper half of the head 6 is made of Ag,
The lower half of the head 6 and the legs 7 are made of Cu, and the entire surface has A
A bottomed hole 7 with a diameter of 0.3 mm and a depth of 1.0 cm is provided with U plating of 0.5 μm and is drilled in the center of the bottom surface of the leg portion 7.
A terminal 8a of the lead wire 8 is inserted into the terminal a, and the terminal 8a of the lead wire 8 is temporarily tightened and connected.

The myocardial infarction determination electrode 9 configured as described above has a leg portion 7.
As shown in Figure 2, the outer diameter is 2 mm, the inner diameter is 0.9 mm, and the thickness is 1.
．． It can be easily attached to the myocardial infarction determining electrode 9 by fitting it into a 5 mm silicon ring IO and fixing this silicon ring 10 to the net 2 as shown in FIG.

In this way, a large number of electrodes 9 for determining myocardial infarction are attached to the net 2.
Since it is a rivet type having a spherical head 6, it can maintain stable contact even with the complex shape of the patient's body. In addition, the part that comes in contact with the body, that is, the head 6, is made of Ag, which has excellent contact characteristics, and light and soft Cu, so
High contact reliability. Furthermore, since the entire surface is plated with Au, it has excellent discoloration resistance regardless of the environment in which it is used, and does not affect others.

Therefore, by covering the heart region of the patient's body with the net 2 and passing a measurement current through the myocardial infarction determining electrode 9, the defective region of the heart can be identified with high accuracy.

(Effects of the Invention) As can be seen from the above description, the electrode for determining myocardial infarction of the present invention is easy to process and manufacture because it is a rivet type, and the part that contacts the body is made of a material with excellent contact characteristics. The contact reliability is high (and the contact part has a spherical head, so it can maintain stable contact even with the complex shape of the body. Also, when installing it on a net, fit the legs into silicon rings, The simple operation of fixing the silicon ring to the net is sufficient, and the net has the advantage of being able to be attached to the net in place of an electrode of any size depending on the size and shape of the heart.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an embodiment of the electrode for determining myocardial infarction of the present invention, FIG. 2 is a perspective view showing a silicon ring to which the electrode of FIG. 1 is attached, and FIG. FIG. 4 is a perspective view of the net with conventional myocardial infarction determination electrodes attached, and FIGS. 5 and 6 each show conventional myocardial infarction determination electrodes. FIG.

Claims (1)

[Claims] 1. The head is rivet-shaped with a spherical shape, the upper half of the head is made of Ag, Ag alloy, or Au alloy, the legs are made of Cu or Cu alloy, and the entire surface is Au-plated. An electrode for determining myocardial infarction consisting of a lead wire connected to the leg.