| 摘要 |
Apparatuses and methods for accessing a tissue and expanding an apparatus within the tissue are disclosed herein. In one embodiment, an apparatus includes a first elongate body having a distal end portion that includes a plurality of cutting portions, a collapsed configuration and an expanded configuration. The plurality of cutting portions is configured to disrupt at least a portion of tissue within a biological body when the distal end portion is in the expanded configuration. A second elongate body is coupled to the first elongate body. An actuator is operatively coupled to a proximal end portion of the second elongate body and configured to bias the second elongate body such that the distal end portion of the first elongate body is in the expanded configuration. The actuator is configured to move the second elongate body such that first elongate body is in the collapsed configuration when the actuator is actuated.
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