A medical system comprising: a structure comprising a plurality of elongate members, each elongate member of the plurality of elongate members comprising a proximal end, a distal end, a respective intermediate portion positioned between the proximal and the distal ends, and a respective length between the proximal and the distal ends, the structure selectively moveable between: a delivery configuration in which the structure is sized to be operably delivered through a bodily opening leading to a bodily cavity,with each elongate member of the plurality of elongate members being arranged to be delivered distal end first; and a deployed configuration in which the structure is expanded to have a larger size, the respective intermediate portions of at least some of the plurality of elongate members being angularly spaced with respect to one another about a first axis and each of the at least some of the plurality of elongate members further comprising a curved portion arranged to extend along and define a respective curved path, the defined curved path intersecting the first axis at each of a respective at least two spaced apart locations along the first axis when the structure is in the deployed configuration, and wherein a portion of the structure is radially spaced from the first axis by a first dimension (2580a, 2580b) when the structure is in the deployed configuration; the medical system further comprising at least one actuator operably coupled to the structure to selectively, when the structure is in the deployed configuration, increase the first dimension (2580a, 2580b) while reducing a distance between the distal end of at least one of the at least some of the plurality of elongate members and a location where the first axis passes through the at least one of the at least some of the plurality of elongate members to reduce a curvature of the respective curved portion of the at least one of the at least some of the plurality of elongate members. a structure comprising a plurality of elongate members, each elongate member of the plurality of elongate members comprising a proximal end, a distal end, a respective intermediate portion positioned between the proximal and the distal ends, and a respective length between the proximal and the distal ends, the structure selectively moveable between: a delivery configuration in which the structure is sized to be operably delivered through a bodily opening leading to a bodily cavity,with each elongate member of the plurality of elongate members being arranged to be delivered distal end first; and a deployed configuration in which the structure is expanded to have a larger size, the respective intermediate portions of at least some of the plurality of elongate members being angularly spaced with respect to one another about a first axis and each of the at least some of the plurality of elongate members further comprising a curved portion arranged to extend along and define a respective curved path, the defined curved path intersecting the first axis at each of a respective at least two spaced apart locations along the first axis when the structure is in the deployed configuration, and wherein a portion of the structure is radially spaced from the first axis by a first dimension (2580a, 2580b) when the structure is in the deployed configuration; the medical system further comprising at least one actuator operably coupled to the structure to selectively, when the structure is in the deployed configuration, increase the first dimension (2580a, 2580b) while reducing a distance between the distal end of at least one of the at least some of the plurality of elongate members and a location where the first axis passes through the at least one of the at least some of the plurality of elongate members to reduce a curvature of the respective curved portion of the at least one of the at least some of the plurality of elongate members. a delivery configuration in which the structure is sized to be operably delivered through a bodily opening leading to a bodily cavity,with each elongate member of the plurality of elongate members being arranged to be delivered distal end first; and a deployed configuration in which the structure is expanded to have a larger size, the respective intermediate portions of at least some of the plurality of elongate members being angularly spaced with respect to one another about a first axis and each of the at least some of the plurality of elongate members further comprising a curved portion arranged to extend along and define a respective curved path, the defined curved path intersecting the first axis at each of a respective at least two spaced apart locations along the first axis when the structure is in the deployed configuration, and wherein a portion of the structure is radially spaced from the first axis by a first dimension (2580a, 2580b) when the structure is in the deployed configuration; the medical system further comprising at least one actuator operably coupled to the structure to selectively, when the structure is in the deployed configuration, increase the first dimension (2580a, 2580b) while reducing a distance between the distal end of at least one of the at least some of the plurality of elongate members and a location where the first axis passes through the at least one of the at least some of the plurality of elongate members to reduce a curvature of the respective curved portion of the at least one of the at least some of the plurality of elongate members.