RU70788U1 - AUTONOMOUS ELECTROSURGICAL DEVICE - Google Patents

Abstract

Autonomous electrosurgical apparatus refers to medical equipment, designed for dissection and coagulation of the soft tissues of the body. The main primary DC power supply (1), connected through the primary power supply selection block (2) to the secondary power supply (4), made in the form of a direct DC-voltage converter and connected in series with the secondary power supply ( 4) an inverter (5) and a switching unit (6) with connectors for connecting electrodes (7). The primary power source selection unit (2) is equipped with a device for connecting to an external primary power source (3). The secondary power source (4), the inverter (5) and the switching unit (6) are connected to the control unit (8). The device is located in the case compartment, in other compartments of which sterile working electrodes (12), replaceable sterile electrodes (13), electric wires (14), charger (15), pedal (16) and spare parts of the device are laid. The technical result of the proposed autonomous electrosurgical apparatus is to reduce the weight by 2 times, dimensions by several times, as well as increasing electrical safety. 1 s.p. f-ly, 2 ill.

Description

The utility model relates to medical equipment, namely to high-frequency electrosurgical devices designed for dissection and coagulation of soft tissues of the body. Due to the fact that the device is autonomous, compact, has a relatively small size, low weight, the ability to periodically recharge the primary power source, as well as the possibility of continuous operation from the on-board network of a car, aircraft, railway carriage and other, it can be used in cramped conditions (in dugouts, trenches, tents, etc.) during military operations, during emergencies, in remote small towns, in logging sites, in tourist groups, with exploration x works, in field mills, on watercraft, etc. The device can also be operated in stationary conditions using an external power source. In this case, the device can work in case of interruptions in the supply of electricity through the supply network.

Known electrosurgical device for coagulation of biological tissues (RF patent No. 2145818, IPC AB 18/12, publ. 02/27/2000), which contains a power supply and a series-connected generator, amplifier, a unit that includes active and passive electrodes, as well as a control unit, the output of which is connected to the second input of the generator, and in the generator, made in the form of series-connected blocks of the oscillator and the block of the pulse shaper, an additional transformer block is introduced, the input of which is connected to the output of the amplifier, and the output electrodes with the block, the power supply input connected to the output of the control unit, an output of the second amplifier unit, wherein the proximal portion of the active electrode all over covered by a layer of insulating material with a high dielectric strength, and the distal portion is in the form of a sphere or a hemisphere.

The main disadvantages of this device is the possibility of its use only in stationary conditions and the relatively high requirements for the electrical insulation of its elements, that is, the safety of the device (GOST R50267.0-92 (IEC 601-1-88).

The first of these drawbacks is eliminated in the stand-alone kit for endovascular surgery selected for the prototype (RF patent No. 2213535, IPC 7 А61В 19/02, publ. 10.10.2003). In a stand-alone kit, equipment for minimally invasive surgery and a switching unit of equipment are placed in a case in the form of a metal box, which

equipped with additional internal guides located perpendicular to the base of the box, on which apparatuses for minimally invasive surgery are mounted with the possibility of movement. The video monitor and tools are placed in an additional case in the form of a metal box equipped with wheels located on its larger side. The case is equipped with internal guides and is divided into compartments for a video monitor, instrumentation, hoses and electric cables. Both cases are equipped with devices for fixing one case to another, and the inner rails of both cases are fixed to the frame, which is connected to the inner surface of the cases through shock absorbers. In this stand-alone kit, functions similar to those of the proposed apparatus are performed by a coagulator and a power unit placed at intervals above each other. The power supply unit contains a primary power source (PIP) of constant voltage (not more than 12 V), to which a secondary power source (VIP) of alternating voltage (220 V / 50 Hz) is connected. An inverter and a switching unit with connectors for connecting electrodes are connected in series with the VIP. The well-known kit can work in stationary conditions from a 220 V AC network or in stand-alone mode from a DC voltage PIP, but this constant voltage in a VIP is converted to AC: 220 V / 50 Hz.

For a more complete analysis of the prototype invention under consideration, we have also studied materials on the EHVCh-90-01 “EFA-M” Viridis coagulator (www.endosurq.ru), which is based on this invention, as well as information on the sources used with this coagulator power supply (www.svjzprom.ru) The maximum power of the known device is 90 W, the operating frequency is 440 KHz, the weight of the coagulator (without power supply) is 5.6 kg, the dimensions (without power supply) are 265 × 270 × 140 mm. The power sources used with the coagulator have a minimum weight of 8 kg with dimensions of 150 × 185 × 268 mm.

From the above data it follows that the known apparatus - the prototype has significant drawbacks: the relatively large dimensions and weight, making it difficult for him to transport one person and operate it in cramped conditions. The smallest total weight (of the coagulator and power source) is 13.6 kg, and the dimensions are 415 × 455 × 408 mm, that is, relatively large. In addition, as in the analogue, the prototype uses an alternating voltage of 220 V, which places high demands on its structural elements (GOST R 50267.0-92 (IEC 601-1-88), on the rules for safe operation with this device.

The technical result of the proposed autonomous electrosurgical apparatus is to reduce the weight by 2 times (from 13.6 kg to 6.5 kg), the dimensions by several times (from 415 × 455 × 408 mm to 215 × 225 × 75 mm), as well as reducing the requirements to electrical safety, since according to the above GOST, the test voltage for the prototype is almost 3 times higher than for the proposed device.

The specified technical result is achieved by the fact that in an autonomous electrosurgical device equipped with a primary primary power supply of constant voltage and comprising a housing in which a secondary power source connected to the primary primary power supply and an inverter and a switching unit with connectors for connecting are connected in series with a secondary power supply electrodes, and the secondary power source, inverter and switching unit are connected to the control unit, according to the proposed p Accordingly, the primary primary DC power supply is made integrated into the apparatus body, and the secondary power supply is made in the form of a direct DC voltage converter, while the primary primary power supply is connected to the secondary power supply through the primary power supply selection unit, which is equipped with a device for connecting to external primary power source.

In addition, the autonomous electrosurgical unit is located in one of the compartments of the case box, in the other compartment of which the working sterile electrodes are laid, while in the compartments of the case cover there are replaceable sterile electrodes, electric wires, a charger, a pedal and spare parts of the apparatus.

An example of a specific implementation of the claimed utility model is illustrated by the figures: in Fig. 1, a block diagram of an autonomous electrosurgical apparatus is shown, in Fig. 2 shows the placement of the apparatus in a case. Autonomous electrosurgical apparatus (figure 1) contains the main primary power source 1 connected to the primary power source selection unit 2, a device for connecting to an external primary power source 3. To the output of the primary power source selection unit 2 are connected in series a secondary power source 4, inverter 5, switching unit 6 with sockets for connecting electrodes 7. The operation modes of the secondary power source 4, inverter 5, switching unit 6 are controlled by the control unit 8.

For the convenience of storage, transportation of an autonomous electrosurgical apparatus and work with it, the use of a case is provided, the box of which 9 (figure 2) and the lid 10 are made with compartments. In separate compartments of the box 9 cases are located:

the apparatus in the housing 11 and the sterile working electrodes 12. In this case, all the elements of the apparatus located above in the block diagram (Fig. 1), including the main primary power source 1, are located in the compartments of the cover 10 of the case (Fig. 2) sterile electrodes 13, electric wires 14, charger 15, pedal 16 and spare elements 17.

Autonomous electrosurgical apparatus works as follows (figure 1). After turning on the device, the primary power supply selection unit 2 determines the presence or absence of a 12 V DC voltage of an external power source (not shown in FIG. 1) connected through a device for connecting to an external primary power source 3. If there is an external power source, the selection unit 2 switches to the input of the secondary power source 4, its voltage, and in the absence of it, the voltage (12 V) of the main primary power source 1 is integrated in the apparatus 11 (figure 2). If the voltage disappears during operation at the output of the external power source, then the primary power source selection unit 2 (FIG. 1) will automatically switch to the built-in primary primary power source 1. If the voltage of the external power source is restored during operation, then the switching will return. The secondary power source 4 converts the input voltage for it of 12 V into a constant voltage of up to 100 V (depending on the selected mode of operation and the characteristics of the object being operated). Inverter 5 converts direct voltage to alternating frequency of 440 kHz. The amplitude and other voltage parameters depend on the selected power mode, the nature of the electrosurgical effect, the type of object being operated, and can change during operation. The switching unit 6 connects the output of the inverter 5 to the corresponding connectors 7, to which, in turn, the required electrodes are connected. The control unit 8 sets and stabilizes the operating modes of the secondary power supply 4 and inverter 5, depending on the settings of the user and the nature of the object, controls the switching unit 6, monitors the operation of all units and units of the device, provides an indication. The control unit 8 monitors the amount of energy in the main integrated primary power source 1 and turns off the device when the energy supply is reduced to a critical value. The pedal 16 (figure 2) is designed to supply voltage to the electrodes and turn off the power of the electrodes. When performing simple operations, when providing primary medical care, one surgeon works with the device. The energy reserve of the main primary power source 1 (Fig. 1) is enough to perform several simple operations or one operation of medium complexity. To periodically recharge this power source in

case (figure 2) there is a charger 15. If there may be problems with recharging, the case should be equipped with a spare primary primary power source: in the compartment for spare elements 17. The weight of this primary source is about 1 kg. An autonomous electrosurgical unit can be designed to operate at a voltage of the primary power source and 6 V, 24 V, 36 V or 48 V.

Using the proposed autonomous electrosurgical unit, several dozen simple operations and operations of moderate complexity in the West Siberian region were successfully made, including under limited conditions. In addition, the devices were delivered to a military hospital in the European part of the Russian Federation.

Dimensions and weight of the proposed apparatus are given above. It should be noted that the total weight of the case with the device, charger, spare primary primary power source, pedal, electric wires and electrodes placed in it does not exceed 10 kg, and the dimensions are three times smaller than the dimensions of the prototype.

Claims (2)

1. Autonomous electrosurgical unit equipped with a primary primary power source of constant voltage and comprising a housing in which a secondary power source connected to the primary primary power source and inverter and a switching unit with electrodes connectors are connected in series with the secondary power source, the secondary power source being , the inverter and the switching unit are connected to the control unit, characterized in that the main primary power source is constant voltage The unit is made integrated in the apparatus body, and the secondary power source is made in the form of a direct DC-voltage converter, while the primary primary power source is connected to the secondary power source through the primary power source selection unit, which is equipped with a device for connecting to an external primary power source. 2. The autonomous electrosurgical apparatus according to claim 1, characterized in that it is placed in one of the compartments of the case box, in the other compartment of which the working sterile electrodes are laid, while in the compartments of the case lid there are replaceable sterile electrodes, electric wires, a charger, a pedal and spare parts of the device.