FR2522271A1 - CONTACT ELECTRODE - Google Patents

Abstract

A. CONTACT ELECTRODE; B. CONTACT ELECTRODE CHARACTERIZED IN THAT IT CONTAINS AN EXTERNAL ELECTRODE 1 CONNECTED TO AN EXTENSION SLEEVE 2, THE INTERNAL WALL OF THIS EXTERIOR ELECTRODE HOUSING AN INSULATING INTERIOR 3 ELEMENT EQUIPPED WITH A GUIDE BUSH 4 IN WHICH A SLIDE CAN SLIDE NEEDLE ELECTRODE 5; C. THE INVENTION APPLIES TO THE DETECTION OF PAIN BY MEASURING VARIATIONS IN THE ELECTRICAL POTENTIAL OF NERVOUS TERMINATIONS.

Description

CONTACT ELECTRODE

The invention relates to an electrode

  for electronic instruments intended to eliminate

  Sea the pain and look for active spots on the skin.

  The instruments of the above type are used starting by determining the active points on the skin These active tips are characterized in that their electrical resistance is lower than the resistance of the other parts of the skin This is the reason why it is absolutely necessary that the pressure of the contact electrodes on the skin remains the same pendaat all measurement operations Another factor limiting the pressure of the contact electrode is related to the fact that the active tips are located on different sensitive parts of the body such as for example the hands, legs, figure, ears, etc. In an electronic pain suppression operation, electrical pulses are applied by means of electrodes placed on the active points of the skin It is however necessary that the

  pressure of an electrode on an active point is sufficient

  health, and that furthermore this pressure does not produce pain. Until now, the electrodes for applications to medical instruments have been made in the form of fixed devices. The pressure of an electrode on the skin then depends on the experience of the practitioner who uses this electrode. pain are intended for use by the general public, the use of

  rigid electrodes for these instruments do not correspond to

not meet the requirements above.

  The aim of the invention is to overcome the disadvantages of rigid electrodes and for this purpose concerns a contact electrode characterized in that it comprises an external electrode connected to a sleeve of

  extension, the inner wall of this outer electrode

  upper housing an insulating inner member provided with a guide pad in which an electrode can slide

in needle.

  According to another characteristic of the invention, the insulating body is provided with a terminal plate, the first supply conductor being connected to the needle electrode via the plate.

  terminal and one spring, and the other power supply

  connected to the outer electrode through

  of this terminal board and a spring.

  According to yet another feature of the invention, the first supply conductor is connected to the needle electrode via the terminal board and the spring, the other supply conductor being connected to a separate external electrode. . The elastic mounting of the needle electrode by means of a long flexible spring makes it possible to obtain a nearly constant pressure of the electrode on the surface of the skin and thus to achieve substantially constant physical conditions when we

  measures and stimulates the active points The needle electrode

  the elastically pushing its spring, allows at the same time

  time to avoid any painful pressure from this electro-

  on the surface of the body The assembly of the electrode

  on the other hand, allows the patient to be self-

  driver and to be able to seek and stimulate

  The invention will be described in detail by way of the accompanying drawings in which: FIG. 1 shows an embodiment of the contact electrode held in one hand; and Figure 2 shows an embodiment of the contact electrode being held in both hands. A contact electrode standing

  in one hand consists of a cylindrical electrode

  outer shell 1 provided with a cylindrical extension sleeve

  In the outer electrode 1 is housed an inner insulating member 3, and a guide bushing 4 placed in the narrow part of the outer electrode allows the electrode to be slid into position.

needle 5

  The contact surface of the electrode

  needle 5 has the shape of a ball The other ex-

  end of the needle electrode 5 is connected mechanically

  and electrically to a long flexible spring 6 resting on an insulating body 7 slidably housed in the insulating extension sleeve 2 The axial position of the insulating body 7 is limited by an abutment notch 9 of the inner diameter of the extension sleeve 2 The insulating body 7 is provided with a terminal plate 8 by means of which the

  first power driver 11 connects to the elec-

  needle 5 through the spring 6 whose free end passes through the insulating body 7, and the second

  supply conductor 12 connects to the external electrode

  1 through the spring 10 passing through the

groove of the insulating body 7.

  The two-handed electrode differs from the one-handed type electrode only in that the outer electrode 1 remains unconnected, and the other supply conductor 12

  is connected to a separate external electrode 13.

  When looking for or stimulating active points, the contact electrode is placed on the

  skin, and it is lightly squeezed until

  trode needle 5 sinks partially slipping

  in its housing As the needle electrode 5 is ar-

  rounded and that the pressure of the spring 6 is less than 0.7 kg / cm 2 the contact of this electrode 5 can produce pain, and it can be considered that at each contact of the electrode, the pressure difference on the skin is

  negligible The accuracy can be further improved by

  setting the needle electrode 5 by marks clearly indicating the desired depth of winding

  of this electrode in its housing.

  In the case of a contact electrode held with one hand, a patient who knows how to use the apparatus and holds the outer electrode 1 in his hand is thus electrically connected to a current source and can stimulate or look for him a point

  active by using the needle electrode 5.

  In the case of a two-handed embodiment using a separate outer electrode 13, the patient holds the latter electrode in the hand, and the other contact electrode to be held with one hand, not connected to the outer electrode, 1, is held by the doctor who seeks to stimulate the active points.

  The contact electrode according to the invention

  can be applied to very complicated medical diagnostic instruments, to measure changes in nerve endings, to explore

biological or other.

Claims (4)

1 Contact electrode for instruments   electronic elements for removing pain and for searching for active points on the skin, characterized in that it comprises an outer electrode (1) connected to an extension sleeve (2), the inner wall of this outer electrode housing an insulating inner member (3) provided with a pad of   guide (4) in which an electrode can slide   guille (5) mechanically and electrically connected to a spring (6) whose other end rests on a body   insulation (7) slidably housed in the extension sleeve.   2), the axial end position of the insulating body (7) being limited by a stop (9) of diameter   inside of the extension sleeve.   Contact electrode according to Claim 1, characterized in that the insulating body   (7) is provided with a terminal board (8). 3 Contact electrode according to one   any of claims 1 and 2, characterized in that   the first supply conductor (11) is connected to the needle electrode via the plate   terminal (8) and the spring (6), and that the other   the supply electrode (12) is connected to the outer electrode (1) via the terminal board (8) and other spring (10). 4 Contact electrode according to one   any of claims 1 and 2, characterized in that   the first supply conductor (11) is connected to the needle electrode (5) via the plate   terminal (8) and spring (6), the other power supply conductor   tation (12) being connected to a separate outer electrode (13).