Medical devices with detachable pivotable jaws

摘要

Medical systems, devices and methods are provided for engaging tissue, e.g. for clipping tissue, closing a perforation or performing hemostasis. Generally, the medical system including a housing, first and second jaws rotatable relative to the housing, a driver, and an elongate drive wire. The elongate drive wire may be disconnected from the driver, first and second jaws, and the housing, which are left in vivo engaged with the tissue.

主权项

1. A medical device for engaging tissue, the medical device comprising:
a housing defining an internal passageway and a longitudinal axis extending between proximal and distal ends of the housing, the housing defining a jaw guide surface along the internal passageway, the jaw guide surface having a distal end; a first jaw having a proximal end slidably and pivotally connected to the housing, the proximal end including a first gear having teeth the first jaw slidably received within the internal passageway for longitudinal movement along the jaw guide surface between an extended position and a retracted position; a second jaw having a proximal end slidably and pivotally connected to the housing, the proximal end including a second gear having teeth the second jaw slidably received within the internal passageway for longitudinal movement along the jaw guide surface between an extended position and a retracted position; a jaw pin extending through the proximal ends of both the first and second jaws, the jaw pin engaging the jaw guide surface of the housing; and a driver having teeth engaged with the teeth of the first and second gears at the proximal ends of the first and second jaws, longitudinal movement of the driver moving the first and second jaws longitudinally along the jaw guide surface between their retracted and extended positions, longitudinal movement of the driver rotating the first and second jaws relative to the housing when the first and second jaws are in their extended positions.