Access device with expandable containment member
First Claim
Patent Images
1. An access device, comprising:
- an outer flexible tube having a proximal end and a distal end;
an expandable containment member attached to the outer flexible tube at the distal end, the expandable containment member extending distally from the distal end and having an unexpanded diameter and an expanded diameter, the outer flexible tube and the expandable containment member together surrounding a lumen within the access device; and
a holding member adapted for being disposed within the lumen of the access device, the holding member being controllable from the proximal end of the outer flexible tube and movable between a first configuration for holding the expandable containment member in radial compression, and a second configuration where the expandable containment member can assume the expanded diameter.
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Abstract
An access device has a distal, expandable member with a low-profile state facilitating insertion and a high-profile state facilitating operation of the device. An obturator can be used to move the expandable member between its two states. Alternatively, the device can have an outer tube and an inner tube connected to respective ends of a cylindrical expansion member, so that co-axial movement of the tubes changes the state of the member. An actuator slideable on a handle facilitates the co-axial movement of the tubes, and a resulting formation of the expandable member in a funnel configuration.
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Citations
16 Claims
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1. An access device, comprising:
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an outer flexible tube having a proximal end and a distal end; an expandable containment member attached to the outer flexible tube at the distal end, the expandable containment member extending distally from the distal end and having an unexpanded diameter and an expanded diameter, the outer flexible tube and the expandable containment member together surrounding a lumen within the access device; and a holding member adapted for being disposed within the lumen of the access device, the holding member being controllable from the proximal end of the outer flexible tube and movable between a first configuration for holding the expandable containment member in radial compression, and a second configuration where the expandable containment member can assume the expanded diameter. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An access device adapted for use in a body conduit, comprising:
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an outer tube having an axis extending between a proximal end and a distal end; an inner tube disposed co-axially with the outer tube and having a distal end; a containment member having a tubular configuration with a proximal end coupled to the distal end of the outer tube and a distal end coupled to the distal end of the inner tube; an actuator coupled to one of the outer tube and the inner tube and being movable relative to the other of the outer tube and the inner tube to transform the containment member between a low-profile state and a high-profile state; and the containment member in the high-profile state having the shape of a funnel. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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Specification