Methods and devices for eluting agents to a vessel

摘要

Systems, devices and methods for eluting an agent at a treatment site are disclosed. The devices include an expandable frame and at least one membrane. The membrane may carry an agent to elute at the treatment site. The membrane may allow blood flow at the treatment site during agent delivery.

主权项

1. An agent delivery device comprising:
an expandable device having a spring; a mandrel coupled to the spring; an elastic balloon surrounding the spring; an agent coating the balloon; and a retractable sheath surrounding the balloon and the expandable device having a retracted position and an unretracted position, wherein the spring expands when the sheath is in the retracted position and the agent is protected in the unretracted position, wherein rotating the spring relative to the mandrel expands or compresses the spring.