What symptom can electric knife burn appear?

summary

Electrotome is a kind of surgical needle, which is used to cut skin and meat, and can automatically disinfect the edge of the wound. The tip of the needle cuts the skin and flesh very quickly with the small arc light oscillating at the audio frequency rate of millions of cycles per second. At the same time, it can automatically disinfect the edge of the wound. What symptom can electric knife burn appear? Let's talk about it

What symptom can electric knife burn appear?

① The skin of the patient with grounding shunt is equivalent to a resistor. During the operation, the resistor load distributes numerous different potential points, especially in the area where the operation current passes. Once the short circuit occurs at two or more points with large potential difference, the abnormal channel of high-frequency current will be formed, which is the so-called "grounding shunt" phenomenon, At this time, the small grounding point of the patient's body may be burned due to high-density high-frequency current. For example, if patients contact directly grounded metal and equipment (such as operating table, bracket), they are prone to electric knife burn.

② Although the metal objects carried by patients with high-frequency radiation are not grounded, for the use of high-frequency electric knife, this kind of metal body is no different from the transmitting antenna, which radiates energy outward. If the transmitting energy is large and the contact point is small, the high-density electric frequency will cause burns at the contact point. If the patient is wearing metal ornaments or metal prosthesis, it is also prone to electric knife burn.

③ Spark low frequency when the connecting part of the electrode plate and the cutter head fails, the connecting point or the cable is broken, which causes the ignition and generates low frequency current. This kind of low-frequency current does great harm to patients. Low frequency burns not only occur on the body surface, but also may occur in the body at the same time. Patients may have serious tremor phenomenon at any time, and even cause ventricular fibrillation, which should be paid enough attention to.

matters needing attention

Familiar with the working principle of high-frequency electrotome, the use of high-frequency electrotome is a potential risk factor in operating room nursing work, improper use will bring serious consequences to patients. Therefore, the relevant operators of high-frequency electrotome must know that the high-frequency electrotome is developed based on the principle of high-frequency current, that is, the high-frequency current only flows along the surface of human skin and does not flow through the internal organs of human body, and the high-energy electric spark generated by the high-density current at the head of the electrotome is used to quickly vaporize the surface tissue, so as to achieve the cutting effect better than that of ordinary scalpel. Only when we are familiar with its working principle, can we reduce the injury to patients caused by the use of high-frequency electrotome.