Instrument accessories have a wide range of uses. Depending on the type of instrument and the application scenario, their core functions mainly lie in expanding functionality, replacing parts, maintenance, and improving user experience.
Expanding Functionality: Many instruments require specific accessories to achieve more comprehensive or professional testing and operation. For example, electrocardiographs require different types of lead wires and grounding pads to connect to the patient and record electrical signals; pulmonary function analyzers rely on a mouthpiece (or paper mouthpiece) as a disposable consumable to connect the patient and the sensor for measuring respiratory function indicators such as vital capacity.
Replacing Parts: During use, some accessories need to be replaced periodically due to wear, aging, or contamination to ensure equipment performance and safety. For example, surgical blades, infusion tubing, and ventilator filters are all consumable parts that need to be replaced promptly; blood glucose test strips, as disposable testing elements, also fall into this category.
Maintenance: Accessories are crucial for ensuring the long-term stable operation of instruments. For example, blood pressure cuffs need to be checked and replaced regularly to ensure measurement accuracy; sensors and leads of various instruments also require cleaning and maintenance.
Improving the user experience: Some accessories are designed to enhance ease of use, comfort, or safety. For example, oxygen masks help patients breathe oxygen more comfortably; disposable pulmonary function tester mouthpieces are made of non-toxic, easily sterilizable materials (such as pure pulp), effectively preventing cross-infection and improving medical safety.

