RU18485U1 - STIMULATING ELECTRODE HEAD - Google Patents

Description

2000131432

liiilipfii

irf Abs 1/04; 1/36

STIMULATING ELECTRODE HEAD

The utility model relates to medical equipment and can be used to conduct electrical stimulation of the patient’s heart muscle in medical institutions.

Known devices, for example, the Federal Republic of Germany patent 3203759 (class MJug ABSh 1/04), in which the electrode head is made of sintered balls consisting of a platinum-iridium alloy. In the manufacture of the balls are placed in a mold corresponding to the external dimensions of the electrode head and sintered in a furnace in an atmosphere of protective gas or vacuum.

EPO patent L 0043461 (class MKI A bit 1/04) in which the electrode head is made of platinum-iridium alloy coated with sponge platinum. The coating is obtained electrolytically, and the porous surface by sintering.

EPO patent No. 0054781 (class MKI A bit 1/04) in which the porous electrode head is made in the form of a sintered body of electrically conductive particles. Particular places of particles are covered with a thin layer of metal or an alloy of the tantalum, titanium, niobium, zirconium groups. Oami particles are composed of an alloy based on cobalt and chromium.

EPO patent J 0064289 (class MKI A bit 1/04), in which the head of the electrode is made of titanium, followed by the deposition of a platinum layer.

US patent No. 4542752 (class ivrf A bit 1/04), in which the porous electrode head has a low impedance carbon coating. Such a structure is formed during the deposition of carbon particles in plasma at the molecular level. and d with the Shtents of the USA No. 4677989 and No. 4762136 (class MKI A b1H 1/04) they set an electrode, the head of which is covered with a thin layer of irium oxide, the thickness of which is selected taking into account the increase in corrosion resistance. US patent No. 5318572 (CL SHA A 61H 1/05), in which the electrode head has a complex configuration, the porous coating of which consists of layers of non-metallic material from the group comprising titanium nitride, iridium oxide, titanium oxide, platinum oxide, palladium oxide and activated forms of carbon. German patent No. 4324185 (CL MKI A 61H 1/05), in which the electrode head is made of titanium and a porous layer of titanium nitride. In order to increase the active surface of the electrode head, it has macrostructures created by laser irradiation applied before coating with a porous material. German patents Nos. I9645I55 and Jfe I9645I62 (CL 1/05) have a multilayer porous structured platinum coating of an electrode head having a large surface and forming a two-layer capacitor of large capacity. However, all these devices have various drawbacks, which are expressed in the complexity of the technological processes when coating the surface of the electrode head, insufficient provision of the maximum active surface of the head, which is achieved mainly due to the porous coating, the use of expensive precious metals, insufficient corrosion resistance and durability. The closest device in technical essence is the stimulating electrode for the patent Göshata8 L 4207368 (class ШШ А 61IT ф5).

fracture with a fractal structure, which makes its active surface several times larger than its own geometric dimensions. The electrode head has a multilayer coating consisting of inert materials, for example, nitrides, carbides, carbonitrides and pure elements of alloying compounds of the gold, silver, iridium, platinum and activated carbon forms. Surface coating is performed by thin spraying.

The disadvantage of this device is the complexity of the process in the manufacture of the electrode head, the use of expensive precious metals.

The purpose of creating a utility model is to increase the efficiency of electrical stimulation of the heart muscle by providing the most active contact surface of the head of the stimulating electrode by creating a porous surface having a fractal structure of willows of relatively inexpensive inert materials.

The essence of the utility model is that the head of the stimulating electrode contains proximal and distal ends having contacts made of titanium followed by a multilayer electrically conductive coating having a fractal structure which consists, for example, of inert materials such as metal oxides. The first layer of the porous coating of the contacts consists of titanium oxide. The second layer is from a mixture of iridium and tin oxides. The subsequent layers consist of alternating second layers bonded to the first layer and to each other, which form a hemispherical contact surface of the distal end and a cylindrical contact surface of the proximal end of the head of the stimulating electrode. The last layer of contact coating consists of a glycerin film and ethyl alcohol.

On Fig shows a General view of the head of the stimulating electrode. Figure 2 shows the semi-Phaerian and cylindrical

section.

The head I of the stimulating electrode 2 contains a distal 3

and the proximal 4 ends, which end with contacts 5 and 6, respectively. The surface of contacts 5 and 6 has a first layer 7 consisting of titanium oxide, a second layer and subsequent bonded second layers 8 consist of a mixture of iridium and tin oxides, and the last layer 9 consists of glycerin films and ethyl alcohol. The total number of layers must be less than or equal to 15.

The head of the stimulating electrode is used as follows. The head, together with the electrode under X-ray control, is transvenously conducted through the lumen of the external jugular vein or subclavian vein until it contacts the heart muscle. When the electrode head comes into contact with the right atrium, its passive or active (fixing to the trabeculae of the cardiac muscle of the distal end) fixation occurs. In this case, the contacts of the distal and proximal ends of the head of the stimulating electrode, due to hemispherical and cylindrical surfaces, provide stable detection of intracardiac signals, as well as stimulation of the heart muscle by electric pulses when the electrode is connected to a pacemaker,

Due to the fact that the head contact surface is porous and has a fractal structure and is made of a multilayer coating of metal oxides such as titanium oxide, iridium oxide, tin oxide, a significant increase in the active surface of the head of the stimulating electrode occurs, which creates a great advantage in detecting the intrinsic signals of the heart muscle and significantly increases its stimulation.

In addition, as a result of the use of a glycerin film and ethyl alcohol, the fractal structure of the contact surface of the head of the stilchuliricum electrode is stabilized, increasing their durability and reliability.

In the manufacture of the head of the stimulating electrode, the labor input is significantly reduced and the technological process is simplified, since successive layers of metal oxides are deposited on the surface of the head of the stimulating electrode by thermal decomposition of solutions of salts of these metals.

Claims (1)

The head of the stimulating electrode containing the proximal and distal ends, the contacts of which are made of titanium, having a porous fractal structure conductive coating consisting of several successive layers of a mixture of inert materials, for example, metal oxides, characterized in that the first layer of the porous contact coating consists of oxide titanium, the second layer is a mixture of iridium and tin oxides, and the subsequent layers consist of alternating second layers bonded to the first layer and between each other, forming hemispheres the contact surface of the distal end and the cylindrical contact surface of the proximal end of the head of the stimulating electrode, wherein the last contact coating layer consists of a glycerin film and ethyl alcohol.