Choosing the right ultrasound coupling gel depends on the application scenario, patient group, and infection control requirements. Prioritize non-sterile versus sterile products.
Routine External Examinations (e.g., abdomen, thyroid, breast): Choose a non-sterile medical ultrasound coupling gel (Class I medical device). This is suitable for cases where the skin is intact. Its total bacterial count should be ≤100 cfu/g, and pathogens such as Staphylococcus aureus and Pseudomonas aeruginosa should not be detected. It is cost-effective and meets daily needs.
Invasive or High-Risk Procedures (e.g., puncture, intraoperative procedures, neonatal examinations): A sterile coupling gel (Class II medical device) must be used to ensure sterility and prevent iatrogenic infections. Sterile coupling gels are standard, especially for transvaginal, transrectal, transesophageal, or infant examinations.
For scenarios requiring disinfection assistance (such as interventional surgeries or examinations of infected patients), coupling agents containing disinfectant can be used. These provide antibacterial protection to the skin surface while transmitting ultrasound, reducing the risk of cross-infection.
Suitable for operating rooms or isolation wards.
For special populations or those with allergies: If allergic to parabens, choose products without these ingredients, or use saline solution under the guidance of a doctor. However, note that image quality may be slightly reduced.
For improved user experience: In winter or for those sensitive to temperature, consider hospitals equipped with heating devices. Warm coupling agents improve comfort and avoid affecting cooperation during examinations due to cold stimulation.