Medical tube, medical tube assembly, and intrapelvic treatment kit

A medical tube for use in intrapelvic treatment, comprising:

• a tubular main body having an internal space configured to receive an elongated article, the tubular main body having a curved central portion, and wherein the tubular main body is composed of two separable pieces, which are separable in the curved central portion;
• at least part of the central portion having a circular arc shape, the tubular main body having a flattened circular shape including a minor axis in a direction of a front surface and a back surface and a major axis in a direction of an inner circumferential portion and an outer circumferential portion as a cross-sectional shape at the central portion, the inner circumferential portion and the outer circumferential portion being spaced apart from each other in a direction of a center axis;
• the center axis of the circular arc of the circular arc shape and an extension line of the major axis having an intersection;
• and
• wherein an angle formed between the center axis and the extension line is an acute angle of 20° to 60°.

A method for treatment of a disease in a pelvic organ by leaving an implant indwelling between a urethral lumen and a vaginal cavity, the method comprising:

• inserting a medical tube into a living body, the medical tube having a tubular main body having a curved central portion, and wherein the tubular main body is composed of two separable pieces, which are separable in the curved central portion, and at least part of the central portion has a circular arc shape, and the tubular main body having a flattened circular shape including a minor axis in a direction of a front surface and a back surface and a major axis in a direction of an inner circumferential portion and an outer circumferential portion as a cross-sectional shape at the central portion, the inner circumferential portion and the outer circumferential portion being spaced apart from each other in a direction of a center axis and an angle formed between the minor axis and a plane containing both a center point of the circular arc in the central portion and a center point of the cross-sectional shape with respect to a longitudinal direction of the tubular main body being an acute angle;
• inserting an implant main body into the internal space of the medical tube;
• removing each of the two separable pieces of the medical tube from the living body;
• and
• embedding the implant main body in the living body between the urethral lumen and the vaginal cavity.