Disinfectant coupling agent

Disinfection coupling agent is a medical disinfectant composed of a combination of water-based polymers. The substance is harmless to the human body and has a neutral pH. The disinfectant coupling agent is very stable, odorless and non-irritating to the body. The emergence of disinfectant coupling agents has made the medical field more convenient and safer and more reassuring for patients. So what exactly is disinfectant coupling agent? Next, let me introduce it to you!

1. Medical coupling agent

Features

The pH value is neutral, non-toxic, odorless, non-irritating, does not stick to the skin and clothes, has no irritation to the skin, no allergic reaction, is easy to wipe off, has good thixotropy and does not flow, and is easy to operate. Good stability and not affected by climate change.

2. Function

It can be used for A-type, B-type, and M-type ultrasonic diagnostic instruments, Doppler blood flow meters, and is suitable for obstetrics and gynecology, digestive system, urinary system, nervous system, newborn, thyroid and breast examinations. It can couple with ultrasonic probes to improve display clarity and has excellent results. It does not need to be applied repeatedly, which helps save diagnostic time.

3. Application

Because the frequency of medical ultrasound is 2.5-5M, it cannot be conducted in the air. If there is air between the probe and the skin, the ultrasound will return as soon as it encounters the air and cannot enter the human body, thus failing to play a role in the inspection. Applying a layer of coupling agent on the skin first can eliminate the air between the probe and the skin.

【1】The concept of ultrasonic coupling agent

During ultrasound examination, the air between the probe and the patient's skin will hinder the transmission of ultrasound waves into the human body. In order to obtain high-quality images, a liquid conductive medium is required to connect the probe and the patient's body surface. This medium is the coupling agent.

【II】 Reasons for using ultrasonic coupling agent

The purpose of using ultrasonic coupling agent is first to fill the tiny gaps between the contact surfaces to prevent the trace air in these gaps from affecting the penetration of ultrasound; secondly, through the "transition" effect of the coupling agent, the acoustic impedance difference between the probe and the skin is reduced, thereby reducing the reflection loss of ultrasonic energy at this interface. In addition, it also plays a "lubricating" role, reducing the friction between the probe surface and the skin, allowing the probe to slide flexibly for exploration.

【III】 The influence of ultrasonic coupling agent on images

The quality of the coupling agent is closely related to the quality of the obtained sonogram. Poor quality coupling agent can cause ultrasonic energy loss, reduced resolution, blurred images, and even irritate the skin and damage the probe.