Medical electrode

 

(57) Abstract:

The invention relates to medicine and can be used in the treatment of gastro-intestinal tract. The electrode includes two contact elements, a porous insulating coating, two conductors, two clamps, made of soluble material. Comprehensive treatment and dispensing of a medicinal drug by a particular switch of the electric potential on the contact elements. After completion of the course of medical procedures due to a rupture of the release is the separation of the ends of the conductors and contact elements. As a result, the electrode without conductors moving through the intestines and out in a natural way, which virtually eliminates trauma to body tissues. The electrode allows to extend the functionality by conducting comprehensive treatment in a localized area of the intestine by pharmacological and electrical stimulation in any combination, increases the accuracy of the dispensing of the medicinal product and eliminates trauma to tissue during removal of the electrode from the body. 5 C.p. f-crystals, 1 Il.

The invention relates to medicine and can be COI is

Known electrode containing a conductive element in the form of carbon filament is covered with a cylindrical shell bioinert tocorresponding elastic material (e.g. silicone rubber)[1].

The disadvantages of this device are trauma to tissue when removing the electrode from the body, as well as its limited functionality.

The prototype is an electrode containing made of porous material contact element, insulation and conductors connected to the contact element, which is made with a blind axial cavity, provided with a metal fitting placed in the coating and electrically connected with the output wire of the contact element, which is placed in the case of a porous dielectric material [2].

The drawbacks of such electrode are: the presence of the insulating coating on the surface, preventing the use of the electrode for electrical stimulation without drug, supply of medicinal substances through the tube and the fitting, which does not allow its accurate dosing, especially in microdoses. This is because, for example, with the introduction of the frame of the substance on the walls of the tube, the possible twists and bends, it is almost impossible to determine the dose of a medicinal product in the treatment area. In addition, when izvlekanie such electrode from the body does not exclude the possibility of travmirovanija tissues.

The aim of the invention is to remedy these disadvantages, namely:

- providing comprehensive treatment in a localized area of the intestine by pharmacological and electrical stimulation in any combination;

- precision dosing of the drug and the effectiveness of its effects on the body due to the direct effect on the accumulation of harmful substances adsorbed on the surface of the electrode;

- exception travmirovanija tissue during removal of the electrode from the body.

This goal is achieved by the fact that the medical electrode containing made of porous material in the form of a hollow cavity of the contact element with a porous insulating coating associated connector with the conductors on the surface of insulation coating with a second contact element, which is connected to the second conductors, while the second contact element within the tel is made in the form of a tube with the release of the soluble material, and the conductors are made of soluble material.

The invention is illustrated in the drawing, which shows an electrode.

Medical electrode contains is made of a porous material in the form of a hollow cavity of the contact element 1 with a porous insulating coating 2 on which is placed a contact element 3. The contact elements 1, 3 are connected with an elastic connectors 4 respectively with the conductors 5, 6, the ends 7 which are placed inside the connector and secured with clamps 8, made of a soluble material such as catgut. In the dead of the cavity of the contact element 1 can be placed drug 9. The porous insulating coating 2 and the contact element 3 can be made of electroconductive and electrically conductive adsorbent, such as silica gel, charcoal, aluminum oxide (Al2O3), alumina, graphite, etc.

Medical electrode operates as follows.

Early in the operation, the patient is administered a medical electrode through the rotor cavity inside and install it into the duodenum in the zone "pacemaker", while the outer ends of the conductors 5,6 (outside of the body Drug exposure is carried out by separation of the outer ends of the conductors 5,6 and feed them different potentials, in the resulting porous insulating coating 2 is in an electric field, the potential on the electrode 1 set more potential on the electrode 3. Under the action of applied electric field liquid medicine 9 begins to move from the inner cavity of the electrode to the outside (the phenomenon of electroosmosis). The magnitude of the dose released from the electrode substance will depend on the voltage applied to the contact electrodes, the duration of their stay energized, the dimensions of the capillaries (pores) of the electrode and the surface through which there is a release of a drug. As the number of substances released through unit surface area at time t under the action of the voltage U applied to the contact elements, 1,3 can be determined, then varying the values of U and t, you can control the dosing of the drug.

Electrical stimulation is carried out by feeding on the interconnected outer ends of the conductors 5,6 electrical impulses from the generator (outside the patient), is used as the active electrode 3 and the indifferent electrode located outside. Since apachi movement of a drug through the capillaries (pores) of the electrode does not occur.

If simultaneously with the release of the drug through the electrode 3, skip DC, therapeutic effect takes the form of galvanotherapy (electrophoresis), resulting in a medicinal substance to be introduced through the mucous membrane.

Electrical stimulation can be performed without external electrode, if implementing the proposed additional electrode conductors with the contact element (not shown).

During the course of medical procedures the latch 8, made for example from methodoloy threads, gradually dissolves, is reduced in cross section and, in the end, is broken under the action of elastic forces of the elastic sleeve 4. At the same time under the action of elastic forces, which in the initial position provided electrical and mechanical contact of the ends 7 of the conductors with the contact elements 1,3, sleeve 4 assumes the position shown in the drawing by the dotted line, which leads to separation (electrical and mechanical) of the lugs 7 with these contact elements. As a result of this medical electrode without ducts begins to move through the bowels in a natural way, and the conductors at the outer ends izvlekaemom the time of disconnection of the conductors of the course of medical procedures must be completed.

If the shell of the conductors run from soluble material, and as his guide be used, for example, conductive liquid (water, water-alcohol solution), then there is no need to extract from the body of such conductors, as he gradually completely dissolved. In this case, injury to the tissues of the gastrointestinal tract is completely eliminated.

If necessary, at the end of treatment can change the orientation of the electric field so that the fluid motion took place outside in the cavity of the electrode (for this purpose, the potential on the electrode 3 to make a higher potential on the electrode 1). When this happens the fence liquid fraction of the gut contents for further studies after leaving and toilet electrode. If necessary, the study is, the electrode may be disposable.

Implementation of the invention will allow to extend the functionality of the medical electrode. Since all treatments are performed by a particular switching potentials on the electrodes, then the entire course of treatment is easily automated through microprocessor control, and therefore provide necklacesa trauma to the tissue, and run it from the adsorbent increases the effectiveness of the treatment and reduces the unwanted effects of harmful substances.

Sources of information

1. Auth. St. USSR N 1369731, class A 61 N 1/04, 1988 - similar.

2. Auth. St. USSR N 1797900, class A 61 N 1/04, 1/30, 1993 prototype.

1. Medical electrode containing made of porous material in the form of a hollow cavity of the contact element with a porous insulating coating associated connector with conductors, characterized in that the surface coating placed second contact element, which is connected to the second conductors.

2. Medical electrode under item 1, characterized in that the second contact element is made of a porous material.

3. Medical electrode on PP.1 and 2, characterized in that the second contact element is made of adsorbent.

4. Medical electrode on PP.1 to 3, characterized in that the porous insulating coating made of adsorbent.

5. Medical electrode on PP.1 to 4, characterized in that the connector is made in the form of an elastic tube with the release of the soluble material.

6. Medical electrode on PP.1 to 5, characterized in that the conductors issue is

 

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