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US 12,588,924 B2Granted
Minimally invasive dissector for inter-layer procedures
AssigneeChildren's Medical Center Corporation
InventorsPedro Jose del Nido, Borami Shin Lee, Christopher James Payne, Mossab Ym Saeed
Life of this patent
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Abstract
A device for minimally invasive, inter-layer surgical procedures advantageously forms a wedge for advancing between adjacent tissue layers and provides a jaw that can be actuated to create a working space for a cutting tool and other instruments within a plane between the tissue layers. The device may also usefully employ an open or wireframe structure for the opposing jaws to preventing tissue or fluid accumulation between the jaws and maximize visibility around the surgical site.
Claims20
An endoscopic device comprising:
- a tube having a distal end region, a proximal end region, and a central axis passing through the distal end region, the tube defining a channel from the proximal end region to the distal end region;
- a first jaw extending from the distal end region of the endoscopic device on a first side of a plane through the central axis, the first jaw having a first interior surface oriented toward the central axis and a first exterior surface oriented away from the central axis, the first jaw defining a first opening passing through the first jaw from the first interior surface to the first exterior surface;
- a second jaw extending from the distal end region of the endoscopic device, the second jaw pivotally coupled to the distal end region by a pivot on a second side of the plane opposing the first side, the second jaw including a second interior surface facing the first jaw and a second exterior surface facing away from the first jaw, the second jaw defining a second opening passing through the second jaw from the second interior surface to the second exterior surface, the second jaw having a closed position in which the first jaw and the second jaw are bounded by a wedge formed by two planar surfaces intersecting at a vertex on the first side of the plane, and the second jaw movable about the pivot to an open position wherein a second distal end of the second jaw moves across the central axis to the second side of the plane to create a working volume about the plane between a first distal end of the first jaw and the second distal end of the second jaw;
- a cutting tool configured to advance through a working channel in the tube and into the working volume to dissect connective structures and create a path for advancing the endoscopic device toward a surgical site;
- and
- an actuator operable to move the second jaw between the closed position and the open position.
3 more elements
An endoscopic device comprising:
- a tube including a distal end region, a proximal end region, and a central axis passing through the distal end region, the tube defining a channel from the proximal end region to the distal end region;
- a first jaw fixed to and extending from the distal end region of the endoscopic device on a first side of a plane through the central axis, the first jaw having a first interior surface oriented toward the central axis and a first exterior surface oriented away from the central axis;
- a second jaw extending from the distal end region of the endoscopic device, the second jaw pivotally coupled to the distal end region by a pivot on a second side of the plane opposing the first side, the first jaw and the second jaw having a closed position bounded by a wedge formed by two planar surfaces intersecting at a vertex on the first side of the plane, and the second jaw movable about the pivot to an open position wherein a second distal end of the second jaw moves across the central axis to the second side of the plane to create a working volume about the plane between a first distal end of the first jaw and the second distal end of the second jaw, wherein the two planar surfaces forming the wedge contact two opposing sides of the tube at the distal end region of the tube and envelope a convex hull of the first jaw and the second jaw in an asymmetric wedge parallel to a side of the tube on a first wedge side and contacting a distal end of the second jaw on a second wedge side, the first wedge side and the second wedge side forming the vertex radially closer to an exterior of the tube than the central axis and forming an interior angle not greater than thirty degrees;
- and
- an actuator operable to move the second jaw between the closed position and the open position.
2 more elements
Dependencies are inferred from the claim text.