Systems and methods for mechanical displacement of an esophagus
An assembly for use with a vacuum system and an esophageal positioning device esophageal positioning device includes an introducer, in which the esophageal positioning device includes a first segment and a second segment. The second segment is pivotally connected to the first segment. A gap portion of an outer tube of the introducer is defined along a longitudinal axis between a tube tip of the introducer and the distal end of the second segment of the esophageal positioning device when the esophageal positioning device is disposed within the introducer. The gap portion defines one or more radial vacuum holes.
1 . A method of using a mechanical esophageal displacement system, the method comprising:
inserting an assembly into an esophagus of a patient via a mouth or nasal passage, wherein the assembly includes:
an introducer comprising:
an articulatable esophageal positioning device including a first segment coupled to a second segment via a pivotal connection, wherein the first segment has a central axis, wherein the second segment has a proximal end pivotally connected to the first segment and a distal end opposite and spaced apart from the proximal end, the second segment being pivotable about the first segment between a first position and a second position upon articulation, wherein the distal end of the second segment is disposed along the central axis in the first position and the distal end of the second segment is displaced from the central axis in the second position, wherein the distal end of the second segment remains a same distance from the proximal end of the second segment in the first position and the second position; and
a soft outer tube sized to pass through the mouth or nasal passage into the esophagus, the soft outer tube defining a longitudinal axis, a tube distal end, and a tube proximal end, the soft outer tube including a body, the body defining
an end portion between the pivotal connection and the tube distal end,
a gap portion between the distal end of the second segment and the tube distal end, and
radial vacuum holes positioned in the gap portion and spaced circumferentially around the longitudinal axis,
a tube tip coupled to the tube distal end and
a vacuum port comprising a vacuum port body, a vacuum line hook up, and a vacuum port cap; and
coupling a vacuum system to the vacuum line hook up of the introducer;
advancing the articulatable esophageal positioning device through the soft outer tube of the introducer;
engaging the vacuum system to adhere a portion of the soft outer tube to an esophageal wall; and
articulating the second segment about the first segment at a selected angle from the first position to the second position.
2 . The method of claim 1 , wherein the gap portion defines a higher density of the radial vacuum holes than any other portion of the body of the soft outer tube introducer.
3 . The method of claim 1 , wherein a density of the radial vacuum holes is highest adjacent the tube distal end of the soft outer tube, and the density of the radial vacuum holes gradually decreases along the longitudinal axis in a direction from the tube distal end of the soft outer tube toward the tube proximal end of the soft outer tube.
4 . The method of claim 1 , wherein a length of the gap portion of the soft outer tube as measured along the longitudinal axis is from 10 mm to 30 mm.
5 . The method of claim 4 , wherein the length of the gap portion of the soft outer tube as measured along the longitudinal axis is 28 mm.
6 . The method of claim 4 , wherein a length of the second segment is 40 mm or more.
7 . The method of claim 1 , wherein the introducer further comprises eyelets extending radially outward from the soft outer tube, wherein each of the eyelets defines an eyelet opening and the eyelet openings of each of the eyelets are axially aligned with each other along the soft outer tube.
8 . The method of claim 1 , wherein the introducer further comprises one or more occlusion balloons extending radially outward from the soft outer tube, the one or more occlusion balloons being inflatable.
9 . The method of claim 8 , wherein the one or more occlusion balloons include a first occlusion balloon and a second occlusion balloon, the first occlusion balloon being disposed at the tube distal end of the soft outer tube and the second occlusion balloon being disposed at a portion of the soft outer tube that is adjacent the pivotal connection between the first segment and the second segment of the articulatable esophageal positioning device when the articulatable esophageal positioning device is disposed within the introducer.
10 . The method of claim 1 , wherein the radial vacuum holes are also positioned in the end portion outside the gap portion, and wherein the gap portion defines a higher density of the radial vacuum holes than the end portion.
11 . The method of claim 1 , wherein a density of the radial vacuum holes is highest adjacent the tube distal end, and the density of the radial vacuum holes gradually decreases along the longitudinal axis in a direction from the tube distal end toward the tube proximal end.
12 . The method of claim 1 , wherein only the end portion defines the radial vacuum holes.