Which closure device employs a collagen plug extravascular and a polymer anchor intravascular with a self-tightening suture that sandwiches the vessel?

• A. Angioseal closure device
• B. Duett closure device
• C. Mynx closure device
• D. Starclose closure device

Answer: (A)

The main idea is a dual-component closure that seals the artery from inside and outside at the arteriotomy. This device uses a polymer anchor placed intravascularly and a collagen plug placed extravascularly. They are connected by a self-tightening suture that pulls the components together, sandwiching the vessel between the intraluminal anchor and the external collagen plug to achieve hemostasis. The collagen plug provides the external seal, while the intravascular anchor helps hold and compress the arterial wall from inside. This specific combination and mechanism—collagen plug outside, polymer anchor inside, tied by a suture that tightens to sandwich the artery—defines this closure system. Other devices use different approaches, such as external clips or alternative sealing methods, and do not match this exact configuration.