Abstract:
Flexible shaft systems having interchangeable end effectors are described herein. A shaft with a flexibility sufficient to allow advancement through a lumen of an endoscopic device has an interface at its distal end for engaging a removable end effector tool. The shaft and end effector tool are configured to enable endoluminal deployment through a patient, e.g., through the esophagus and into the stomach. The removable end effector tool may comprise any number of different tools, such as graspers, forceps, scissors, snares, needles, etc., each being interchangeable upon the flexible shaft distal end. Once a procedure is done within the patient, the flexible shaft may be withdrawn and another distal end effector tool may be interchanged. The new end effector tool and flexible shaft can then be reintroduced into the patient.
Abstract:
Systems for optimizing anchoring force are described herein. In securing tissue folds, over-compression of the tissue directly underlying the anchors is avoided by utilizing tissue anchors having expandable arms configured to minimize contact area between the anchor and tissue. When the anchor is in its expanded configuration, a load is applied to the anchor until it is optimally configured to accommodate a range of deflections while the anchor itself exerts a substantially constant force against the tissue. Various devices, e.g., stops, spring members, fuses, strain gauges, etc., can be used to indicate when the anchor has been deflected to a predetermined level within the optimal range. Moreover, other factors to affect the anchor characteristics include, e.g., varying the number of arms or struts of the anchor, positioning of the arms, configuration of the arms, the length of the collars, etc.
Abstract:
Apparatus and methods for optimizing anchoring force are described herein. In the securing tissue folds, over-compression of the tissue directly underlying the anchors is avoided by utilizing tissue anchor (10) having expandable arms (12) configured to minimize contact area between the anchor (10) and tissue. When the anchor (10) is in its expanded configuration, a load is applied to the anchor (10) until it is optimally configured to accommodate a range of deflection while the anchor (10) itself exerts a substantially constant force against the tissue. Various devices e.g., stops, spring member, fuses, strain gauges, etc., can be used to indicate when the anchor (10) has been deflected to a predetermined level within the optimal rang. Moreover, other factors to affect the anchor (10) characteristics include, e.g., varying the number of arms (12) or struts (12) of the anchor (10), positioning of the arms (12), configuration of the arms (12), the length of the collars (14, 16), etc.
Abstract:
Tissue anchors include a flat, broad, and large contact surface for engagement with a portion of tissue. Several embodiments of composite tissue anchors include a support element and an overlay element. Tissue anchor assemblies include two or more tissue anchors, a connector, and a cinching mechanism. In some embodiments, the tissue anchors included in the tissue anchor assemblies are of different types, sizes, and/or shapes.
Abstract:
An endoscopic system includes a sheath having a flexible sheath body. A tip is attached to a distal end of the sheath body. A handle is attached to the proximal end of the sheath body. A steerable section may be provided in the sheath adjacent to the tip. Steering controls may then be provided on the handle for steering the steerable section. Lumens extend from the tip to the handle. The distal end of each lumen is sealed to the tip. Bodily fluids can only enter into the lumens and not other areas within the sheath. In some embodiments, a shapelock assembly has an elongated hollow body positionable within the sheath body. The shapelock body may be switched between generally rigid and flexible conditions. The sheath provides a sterile barrier around the shapelock body. The shapelock assembly can be readily reused and the sheath may be disposable. In other embodiments, the flexible sheath has a composite construction that provides improved torque transmission capabilities.
Abstract:
Tissue anchors include a flat, broad, and large contact surface for engagement with a portion of tissue. Several embodiments of composite tissue anchors include a support element and an overlay element. Tissue anchor assemblies include two or more tissue anchors, a connector, and a cinching mechanism. In some embodiments, the tissue anchors included in the tissue anchor assemblies are of different types, sizes, and/or shapes.
Abstract:
Apparatus & methods for optimizing anchoring force are described herein. In securing tissue folds, over-compression of the tissue directly underlying the anchors is avoided by utilizing tissue anchors having expandable arms configured to minimize contact area between the anchor and tissue. When the anchor is in its expanded configuration, a load is applied to the anchor until it is optimally configured to accommodate a range of deflections while the anchor itself exerts a substantially constant force against the tissue. Various devices, e.g., stops, spring members, fuses, strain gauges, etc., can be used to indicate when the anchor has been deflected to a predetermined level within the optimal range. Moreover, other factors to affect the anchor characteristics include, e.g., varying the number of arms or struts of the anchor, positioning of the arms, configuration of the arms, the length of the collars, etc.
Abstract:
Systems, devices and methods for endoscopic procedures are provided involving accessing and manipulating tissues beyond the capabilities of traditional endoscopic instruments. Embodiments of the systems include an elongated main body (10) which has one or more independently shape-lockable sections (90, 92, 93) and a variety of instruments which are either built in to the main body or advanceable through lumens (24, 26, 58) which extend through the main body (10). Such instruments may include scopes, suction instruments, aspiration instruments, tool arms, plicators, needles, graspers, and cutters, to name a few. The ability to steer and shape-lock specific sections (90, 92, 93) of the main body (10) enables access to target locations which are typically challenging to reach and provides a stabilized platform to perform a desired procedure at the target location.