RU2286743C2 - High-frequency electric-surgical apparatus - Google Patents

Abstract

FIELD: medical equipment.

SUBSTANCE: apparatus can be used for cutting and coagulating soft tissues of human organism. High-frequency electric-surgical apparatus has high-frequency current source connected in series with current detector and control signal former. Output of former is connected with control input of high frequency current source. Bipolar output of high frequency current source is connected with bipolar input of bipolar pincers through output circuit. Voltage source, introduced additionally into apparatus, is connected in series with calculator, alarm signal former and signaling unit. Bipolar input of voltage detector is connected with bipolar input of output circuit. The other input of voltage detector is connected with output of current detector. Ease of application of apparatus is provided due to signaling on approach, availability or possibility of alarm mode of operation, generating when electrodes of bipolar pincers get closer or touch each other.

EFFECT: improved comfort of application.

1 dwg

Description

The invention relates to medical equipment and can be used for dissection and coagulation of the soft tissues of the body.

Known electrosurgical apparatus [1], containing a current source, a current sensor, a voltage sensor, a circuit for generating an optimal control signal and two electrodes. The disadvantage of this device is the lack of signaling about the possibility or presence of an emergency mode of the device during a surgical operation.

A known high-frequency electrosurgical apparatus [2], containing a high-frequency current source, a current sensor, a control signal shaper, an output circuit, passive and active electrodes. The disadvantage of this device is the lack of signaling about the possibility or presence of an emergency mode of the device during a surgical operation.

The closest in technical essence is a high-frequency electrosurgical apparatus [3], containing a high-frequency current source, a current sensor, a control signal shaper, an output circuit and bipolar tweezers. The disadvantage of this device is the lack of signaling about the possibility or presence of an emergency mode of the device during a surgical operation.

The objective of the invention is to create conditions for gentle surgical intervention and increase the usability of the apparatus by providing an alarm about the possibility or presence of an emergency mode of the apparatus during the surgical operation.

The solution to the problem is achieved by the fact that a high-frequency electrosurgical apparatus containing a high-frequency current source, a current sensor and a control signal shaper, the output of which is connected to the control input of a high-frequency current source, the bipolar output of which is connected through the output circuit to the bipolar input of the bipolar forceps, is connected to the apparatus introduced in series are a voltage sensor, the bipolar input of which is connected to the bipolar output of the output circuit, a computer, another input of which connected to the output of the current sensor, an alarm driver and an alarm device.

The technical result of the proposed solution is to provide an alarm about the approach, possibility or presence of an emergency mode that occurs when the electrodes of the bipolar forceps approach or close.

The drawing shows a structural diagram of an electrosurgical high-frequency apparatus.

The apparatus contains a high-frequency current source 1, an output circuit 2, bipolar tweezers 3, a current sensor 4, a voltage sensor 5, a calculator 6, an alarm driver 7, a signaling device 8 and a control signal generator 9.

The device operates as follows. Using the controls of the high-frequency current source 1 (not shown), the required parameters of the output action are set and the current that passes through the output circuit 2 is turned on and supplied to the bipolar forceps 3. The corresponding AC signals are sent to the calculator from the outputs of the current sensor 4 and voltage sensor 5 6, in which by performing the operation of dividing the voltage value by the current value, taking into account their phase relationship and the necessary correction factors, the value of the active part of the impedance is determined the tissue located between the electrodes of the bipolar forceps, and displayed in the form of a DC voltage. The alarm driver 7, when one or more consecutive threshold values of the input signal is exceeded, generates one or more consecutive trigger output signals of the signaling device 8, which emits warning or alarm signals of an audible or other nature. In this case, the driver 9 of the control signal converts the signal from the output of the current sensor 4 into a signal for controlling the level of the bipolar current of the current source 1 to maintain the current within the established limits.

The device can be made of standard modules and on an accessible element base. The constructive implementation of a number of blocks may coincide or include designs of the same functional purpose of the prototype and analogues. For example, the design of block 1 may coincide with the design of the subsystem of blocks 1-3 of the prototype, the designs of blocks 2-4, 9 may coincide with the designs of blocks 4-7 of the prototype. The execution of the remaining blocks is determined by their functional purpose and is known or obvious from the prior art in the applicable time and frequency ranges.

Bibliographic list

1. Patent No. 20088830 (RU). Electrosurgical apparatus / K.A.Dodonov et al. // BI. 03/15/1994.

2. Patent No. 2166299 (RU). High-frequency electrosurgical apparatus / A.P. Bychkov et al. // BI. 05/10/2001.

3. Patent No. 2221516 (RU). High-frequency electrosurgical apparatus / S.V. Belov et al. // BI. 01/20/2004.

Claims (1)

A high-frequency electrosurgical apparatus containing a high-frequency current source connected in series, a current sensor and a control signal driver, the output of which is connected to a control input of a high-frequency current source, the bipolar output of which is connected through the output circuit to a bipolar input of bipolar forceps, characterized in that series-connected voltage sensor, the bipolar input of which is connected to the bipolar output of the output circuit, a computer, the other input of which is connected with the output of a current sensor, an alarm driver and an alarm device.