vascular access device

Implanted venous access ports represent a significant advancement in long-term vascular access technology that combines reliable function with enhanced patient comfort and reduced infection risk. As illustrated in the image, these totally implantable devices consist of a reservoir (port) with a self-sealing septum connected to a catheter that extends through the venous system to terminate near the heart. Unlike external catheters, the entire system resides beneath the skin, requiring no external components when not in use.

Tunneled central venous catheters (CVCs) represent a specialized type of long-term vascular access device designed for patients requiring extended intravenous therapy. Unlike standard central lines, tunneled CVCs feature a subcutaneous tract between the venous entry site and the exit point on the skin, providing enhanced infection protection and improved stability. The image illustrates the anatomical positioning of a tunneled CVC, showing its path from the external exit site through a subcutaneous tunnel, into the right subclavian vein, and ultimately terminating in the superior vena cava near the right atrium.

The image demonstrates the proper insertion of a Huber needle (also known as a gripper needle) into an implanted vascular access port. This specialized non-coring needle is designed specifically for accessing implanted ports without damaging the self-sealing silicone septum.

Implanted vascular access ports represent a significant advancement in long-term intravenous therapy, providing reliable access for patients requiring repeated administration of medications, blood products, or nutritional support. These subcutaneously implanted devices consist of a central catheter connected to a reservoir housed within a durable port body, which is surgically placed beneath the skin, typically in the upper chest area as shown in the image.

The process of neural tube formation is a critical step in embryonic development, laying the foundation for the central nervous system. This diagram illustrates the key stages—starting from the neural plate to the formation of the neural tube and neural crest—offering valuable insights for medical students and professionals studying developmental biology. Explore this comprehensive guide to understand the intricate process and its significance in human anatomy.

A Peripherally Inserted Central Catheter, commonly known as a PICC line, is an essential medical device that provides prolonged intravenous access for patients requiring long-term medication administration, nutritional support, or frequent blood sampling. This thin, flexible tube is inserted through a peripheral vein, typically in the upper arm, and advanced until the tip reaches a central vein near the heart. PICC lines have revolutionized patient care by reducing the need for repeated needle sticks and providing a reliable vascular access route for extended periods, ranging from weeks to months.