Fallopian tube retrievable device

A contraceptive device comprising:

• an occluding component shaped and sized to be deployed in a tubal lumen of a reproductive organ and comprising:
• an expandable frame having a proximal portion, a distal portion and a middle portion disposed between proximal and distal portions, and reversibly expandable from a collapsed state to an expanded state;
• and
• a barrier comprising an impermeable membrane for both human sperm and oocyte, and supported by the expandable frame, such that when the frame is in the expanded state:
• (a) the barrier is urged against walls of the tubal lumen to anchor the occluding component in the tubal lumen and to define at least two tube lumen sealing areas, each disposed perpendicular with respect to a longitudinal axis of the walls of the tubal lumen such that (i) the expandable frame is disposed between the two tube lumen sealing areas, and (ii) passage of reproductive cells through the expandable frame, and through the tubal lumen, is blocked;
• and
• (b) a cross section of each one of the proximal and distal portions is greater than a cross section of the middle portion such that a gap is formed between the middle portion and walls of the tube when the expandable frame is expanded in the tubal lumen.

A contraceptive device comprising:

• an occluding component shaped and sized to be deployed in a tubal lumen of a reproductive organ and comprising:
• an expandable frame having a proximal portion, a distal portion and a middle portion disposed between proximal and distal portions, and reversibly expandable from a collapsed state to an expanded state;
• a barrier comprising an impermeable membrane for both human sperm and oocyte, and supported by the expandable frame, such that when the frame is in the expanded state:
• a) the barrier is being peripheral and/or circumferential to the expandable frame;
• b) the barrier is characterized by a contour having at least one portion intended for contacting the internal walls of the tubal lumen to anchor the occluding component in the tubal lumen and to anchor the occluding component in the tubal lumen and to define a sealing surface such that passage of reproductive cells through the expandable frame, and through the tubal lumen, is blocked when the expandable frame is expanded in the tube;
• wherein a cross section of each one of the proximal and distal portions is greater than a cross section of the middle portion such that a gap is formed between the middle portion and walls of the tube when the expandable frame is expanded in the tubal lumen.