Endometrial lining tissue treatment device

An endometrial lining tissue treatment device, comprising:

• an elongate hollow delivery sheath having a distal portion configured for transcervical placement into a uterus, the delivery sheath having an axial lumen and an open distal end in communication with the lumen;
• an elongate positioning member slidably disposed in the delivery sheath lumen;
• an energy applicator coupled to a distal end of the positioning member;
• wherein movement of the positioning member distally relative to the delivery sheath, or of the delivery sheath proximally relative to the positioning member, moves the energy applicator from a collapsed configuration in which the energy applicator is at least partially withdrawn through the open distal end of the delivery sheath and into the delivery sheath lumen, to an extended configuration in which the RF applicator is extended out the open distal end of the delivery sheath and at least partially self-expanded to substantially conform to a uterine cavity,
• and wherein the delivery sheath and positioning member are operatively coupled to an actuator that moves the positioning member relative to the delivery sheath to thereby move the energy applicator between the collapsed configuration and the extended configuration,
• the energy applicator comprising tissue contacting energy delivery member and an expandable-collapsible support structure underlying the energy delivery member,
• the expandable-collapsible support structure comprising a substantially non-compliant elongate balloon disposed within the tissue contacting member that, when inflated with the energy applicator in the extended configuration, has a length oriented substantially transverse to the positioning member, including a first closed end that positions a corresponding first corner portion of the energy delivery member in a first cornu of a uterine cavity, and a second closed end that positions a corresponding second corner portion of the energy delivery member in a second cornu of a uterine cavity;
• and
• at least one inflation member having an inflation lumen fluidly coupled to an interior of the balloon, with a proximal end of the respective inflation member configured for fluidly coupling the respective inflation lumen with a source of inflation media.

An endometrial tissue treatment device, comprising:

• an elongate positioning member;
• an energy applicator coupled to a distal end of the positioning member, the energy applicator comprising an tissue contacting member and an expandable-collapsible support structure underlying the tissue contacting member, the expandable-collapsible support structure comprising a substantially non-compliant elongate balloon disposed within the tissue contacting member that, when inflated, has a length oriented substantially transverse to the positioning member, including a first closed end that positions a corresponding first corner portion of the tissue contacting member in a first cornu of a uterine cavity, and a second closed end that positions a corresponding second corner portion of the tissue contacting member in a second cornu of a uterine cavity, with a lengthwise portion of the balloon positioning a distal facing portion of the tissue contacting member for contacting a fundal wall of a uterus;
• at least one inflation member having an inflation lumen fluidly coupled to an interior of the balloon, with a proximal end of the respective inflation member configured for fluidly coupling the respective inflation lumen with a source of inflation media;
• and
• an elongate tensioning member that is movable relative to the positioning member, the tensioning member having a distal end fixed to the balloon at an approximate lengthwise midpoint of the balloon.