Medical devices with detachable pivotable jaws
First Claim
Patent Images
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 driver guide surface along the internal passageway;
a first jaw rotatable relative to the housing, the first jaw having proximal and distal ends;
a second jaw rotatable relative to the housing, the second jaw having proximal and distal ends;
an elongated drive wire; and
a driver having a proximal portion engaged with the drive wire and a distal portion engaged with the proximal ends of the first and second jaws, longitudinal movement of the driver rotating the first and second jaws relative to the housing, the driver including an intermediate portion positioned between the proximal and distal portions, the intermediate portion including a frame and a locking leg connected to the frame, the frame defining an intermediate space, the frame being deformable such that a predetermined longitudinal force differential between the proximal portion and distal portion of the driver causes the frame to deform and the locking leg to move away from the longitudinal axis into a locking position for engaging the driver guide surface.
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Accused Products
Abstract
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.
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Citations
22 Claims
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1. A medical device for engaging tissue, the medical device comprising:
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a housing defining an internal passageway and a longitudinal axis extending between proximal and distal ends of the housing, the housing defining a driver guide surface along the internal passageway; a first jaw rotatable relative to the housing, the first jaw having proximal and distal ends; a second jaw rotatable relative to the housing, the second jaw having proximal and distal ends; an elongated drive wire; and a driver having a proximal portion engaged with the drive wire and a distal portion engaged with the proximal ends of the first and second jaws, longitudinal movement of the driver rotating the first and second jaws relative to the housing, the driver including an intermediate portion positioned between the proximal and distal portions, the intermediate portion including a frame and a locking leg connected to the frame, the frame defining an intermediate space, the frame being deformable such that a predetermined longitudinal force differential between the proximal portion and distal portion of the driver causes the frame to deform and the locking leg to move away from the longitudinal axis into a locking position for engaging the driver guide surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A medical device for engaging tissue, the medical device comprising:
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a housing defining an internal passageway and a longitudinal axis extending between proximal and distal ends of the housing, the housing defining a driver guide surface along the internal passageway; a first jaw rotatable relative to the housing, the first jaw having proximal and distal ends; a second jaw rotatable relative to the housing, the second jaw having proximal and distal ends; an elongated drive wire; and a driver having a proximal portion engaged with the drive wire and a distal portion engaged with the proximal ends of the first and second jaws, longitudinal movement of the driver rotating the first and second jaws relative to the housing, the driver including an intermediate portion positioned between the proximal and distal portions, the intermediate portion including a frame and a locking leg connected to the frame, the frame defining an intermediate space, the frame being deformable such that a predetermined longitudinal force differential between the proximal portion and distal portion of the driver causes the frame to deform and the locking leg to move away from the longitudinal axis into a locking position for engaging the driver guide surface; wherein the driver guide surface includes a proximal portion and distal portion and a shoulder between the proximal and distal portions, the shoulder facing proximally, and wherein the locking leg is positioned to engage the shoulder to limit longitudinal movement of the driver after the locking leg has been moved laterally outwardly by deformation of the frame of the driver.
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Specification