BD Arterial Cannula with Flow Switch - 20G | Medical Device

This medical device is an over-the-needle arterial cannula designed for insertion into peripheral arteries. Its primary function is to facilitate the monitoring of arterial blood pressure and the collection of blood samples for blood gas analysis. The integrated flow switch mechanism is a key component, designed to prevent the backflow of blood during insertion and after placement.

This feature aims to reduce the risk of air embolism and minimize the potential for blood spillage and contamination, thereby enhancing patient safety and the procedural environment. The cannula is constructed with materials intended to promote smooth insertion and minimize complications. The device features a flashback chamber that provides visual confirmation of arterial placement.

The design incorporates wings for secure fixation to the patient's skin, aiding in maintaining the catheter's position during use. The needle tip incorporates an automatic safety mechanism designed to activate after insertion, offering protection against needlestick injuries without altering the standard insertion technique. The materials used in the catheter construction, specifically FEP (fluorinated ethylene propylene), are selected for their properties that may help reduce the likelihood of clot formation.

The device is available in various sizes and lengths to accommodate different clinical needs and patient anatomies. The flow switch is operator-controlled, allowing for management of blood flow during the procedure and subsequent care. The removable flow control plug enables the connection of a syringe for aspiration or infusion.

This cannula is particularly suited for radial artery placement, a site associated with a lower incidence of complications compared to other arterial access points such as the brachial or femoral arteries. The 20-gauge size offers a balance between ease of insertion and sufficient flow rate for monitoring and sampling, with clinical data suggesting a lower risk of complications compared to larger gauge cannulas.