CZ306789B6 - Connection of a stimulation circuit quality indicator - Google Patents

Abstract

The stimulation circuit quality indicator consists of inverting terminal stage of a stimulator connected to bioburden, where the current sensing resistor (3) is connected to the end stage (1), while, between the current sensing resistor (3) and the bioburden, there is connected the the serial combination of the first resistor (4) and the second resistor (5), whose common point is an output of the indication voltage (U) on the control unit (6) generating an optoacoustic signal on the indicating device (7).

Description

Pacing circuit quality indicator wiring

Technical field

The subject of the application relates to the arrangement of the connection of the pacing circuit quality indicator to an electrostimulator such as a pacemaker, neurostimulator, massage stimulator and the like.

BACKGROUND OF THE INVENTION

Currently, the field of electrostimulators includes a wide range of devices ranging from medical devices, such as pacemakers, neurostimulators, to various massage stimulators used, for example, in muscle stimulation rehabilitation, to various devices used in the fitness or wellness areas.

Devices that can be referred to as stimulators or electro stimulators are usually composed of two visible parts, the electrodes and the device itself. The electrostimulator is usually comprised of a control unit, a pulse generator that represents the electrical circuit and the power supply.

It follows from the foregoing that electrostimulators, whether medical, rehabilitation or end-user devices, are not equipped with an indication of the quality of the pacing circuit. The disadvantage of these devices is that the user has no information about the quality of the pacing circuit.

The second group of these devices is then equipped with an indication of the measured output voltage amplitude. The disadvantage of this type of device is obtaining only basic information about measured resistance, which is indicated only at high values of pacing voltage.

SUMMARY OF THE INVENTION

The above disadvantages are overcome by the apparatus of the present application. The proposed connection already performs a comparison of the pacing voltage and current at the minimum pacing power (given by the product of pacing current and pacing voltage) and thus provides information on the measured value of the bio-load associated with ineffective pacing. The stimulator operator is then guided by this indication to remedy the condition of changing the position of the stimulation electrode.

Thus, it is important that a current sensing resistor is connected to the output stage of the stimulator. Furthermore, it is important that a series combination of resistors of two resistors, whose common point is the output of the indication voltage U, is connected between the current sensing resistor and the bio-load. The indication voltage U is proportional to the magnitude of the bio-load used.

For the purposes of this application, bio-load means - ie bioimpedance (electrical impedance of tissues) ie passive electrical properties of organism and tissues. This means that it describes the behavior of an organism / tissue as an electrical appliance when connected to an AC power source. The electrical impedance of the tissue is influenced, inter alia, by the composition and arrangement of the tissue.

A more detailed analysis takes into account, for example, the following phenomena:

body fluids are conductor II. The conductivity is not independent of current density and the frequency of polarization of macromolecules is different at different frequencies, ie the permittivity of the environment is not independent of frequency

The structure of the tissue is similar to the suspension of conductive nuclei dielectric spheres in a conductive environment rather than a homogeneous environment. Conductive blood flows through the tissues. The conductivity of cell membranes of excitable cells varies according to their condition.

Clarification of drawings

Figure 1 shows an exemplary embodiment of the invention.

DETAILED DESCRIPTION OF THE INVENTION

Example 1

The pacing circuit quality indicator connection consists of an inverting output stage 1 of the stimulator, which supplies a pulse current to the bio load 2, with the current value being sensed by the sensing resistor 3. Through a series combination of the first resistor 4 and the second resistor 5 connected between the sensing resistor 3 and the bio 2, an indication voltage U is generated proportional to the magnitude of the bio load 2. The impulse current I from the stimulator is sensed by a sensing resistor 3 of 100 100. The maximum permissible bio-load 2 is 1 kQ. For the threshold indication voltage U = 0, then the values of the series combination of the first resistor 4 and the second resistor 5 are in a ratio of 0.1, for example 330 kQ and 3.3 ΜΩ. The resulting signal is then processed by the control unit 6, which generates feedback in the form of opto-acoustic signals on the indicating device (7).

Industrial applicability

The subject of this application is usable in the production of electrostimulation devices intended for medical environment, rehabilitation, wellness and fitness.

PATENT CLAIMS

Claims (1)

1. Connection of a pacing circuit quality indicator consisting of an inverting output stage of a stimulator connected to a load, characterized in that a current sensing resistor (3) is connected to the output stage (1), while a current sensing resistor (3) and a bio load (2) are connected a series combination of a first resistor (4) and a second resistor (5) whose common point is the output of the indicating voltage (U) on the control unit (6), which generates an optoacoustic signal on the indicating device (7).