An apparatus for inhibiting blood loss from a puncture site. The apparatus may include means for locating a puncture site in a blood vessel wall. This apparatus is comprised of a tube and an elongated member that is positioned around the tube. The elongated member includes a proximal end and a distal end. Around the tube is also a dissolvable distal capsule, the distal capsule including a proximal end and a distal end, wherein the proximal end of the distal capsule attaches to the distal end of the elongated member. Inside the distal capsule is hemostatic material such as a sponge.