The bipolar circuit detects the bonding resistance between the negative plate and the human body. If the resistance is too large, the negative plate will fall off, so as to avoid overheating and burning the skin. Monopolar has no such function.
Negative plate is also known as negative plate of electrosurgical, neutral negative plate, neutral electrode, grounding electrode, return electrode and so on. It is one of the supporting supplies of high-frequency equipment (high-frequency electrosurgical, gynecological LEEP knife). There are many types, from the early metal electrode plate to capacitive negative plate, and then to the most commonly used hydrophilic conductive adhesive and flexible pre-adhesive negative plate, which is one of the indispensable and most commonly used consumables in electrosurgery.
Negative plate is divided into monopolar and bipolar negative plate, children's and adult negative plate, neutral electrode with line and without cable . The negative plate without wire needs to be equipped with a connection to connect to the host. The common connection includes the negative plate connection of REM plug and HIFI plug.
The pasted negative plate can be divided into monopolar plate and bipolar plate. The difference between the two is that the bipolar plate divides the conductive aluminum film into two parts, which is designed to detect the contact effect between the negative plate and the patient. The specific working principle is as follows: for the high-frequency electric cutter with a negative plate contact quality detection system, there is a separate detection loop on the main machine, which is two conductive aluminum films connected to the negative plate. Since the human body has resistance, when the negative plate is attached to the patient, the resistance of the detection circuit will change. By measuring the resistance value of the circuit, the high-frequency electrotome can determine whether the negative plate is in good contact with the human body.
Plate inspection includes three aspects:
The first contact area, we all know that the smaller the contact area, the higher the current density, the higher the heat generated, the higher the risk of scald, so you have to make sure that the negative plate is fully applied .
Second is to check the negative plate sticking direction. The correct application method is to align the midline with the surgical area so that the current received by the two negative plates is balanced
Finally, it is to check whether the disposable negative plate is reused. The repeated use of the disposable negative plate cannot effectively control the risk and is absolutely prohibited.
Post time: Dec-01-2022
