What are the three categories of access closure devices?

The correct answer identifies the three categories of access closure devices as suture mediated, collagen mediated, and clip-based devices. Each of these categories refers to distinct mechanisms by which vascular access sites are closed after procedures like catheter placements.

Suture mediated devices involve the use of sutures to close the access site, providing reliable closure and often achieving hemostasis effectively. These devices may employ various technologies for stitch placement and knot tying, facilitating closure in a controlled manner.

Collagen mediated devices utilize collagen to promote clot formation and vascular healing at the puncture site. By providing a scaffold for platelets and proteins to adhere, these devices enhance the natural healing process of the body, helping to seal the access site efficiently.

Clip-based devices often use mechanical clips to hold the tissue together, ensuring quick and effective closure. These clips can provide immediate hemostasis while being easy to apply and remove, making them convenient for interventional procedures.

Understanding the distinctions between these categories is crucial as each type has its unique applications, advantages, and considerations during interventional radiology procedures.