Medical port

1. A medical port comprising:

a faceplate including:

a main body having a disc shape, wherein a through-hole through which a medical device is configured to be inserted is formed in the main body, and

a fixing plate connected to the main body such that a gap in the faceplate is formed between the fixing plate and an outer circumferential surface of the main body in a state in which movement of the fixing plate with respect to the main body in a direction along a central axis of the faceplate is restricted;

a fixing ring being formed in an annular shape and having:

an internal space into which the medical device passing through the through-hole is configured to be inserted,

a first opening end which is in communication with the internal space and is opened at a faceplate side,

a second opening end which is in communication with the internal space and is opened at a side opposite to the faceplate side,

a tapered section having a first portion that has a predetermined outer diameter and is formed in a side of the first opening end in a radial direction with respect to the central axis of the faceplate, and a second portion that has an outer diameter larger than the predetermined outer diameter of the first portion and is formed in a side of the second opening end in the radial direction, and

an outer circumferential surface having an outer diameter that gradually increases from the first opening end toward the second opening end; and

a moving member being a flexible tubular member and being formed in a double tube shape in which an inner surface and an outer surface are turned to be interchanged at a halfway portion in an extending direction of the moving member, the moving member having:

a first end that is fixed to any one of the fixing plate and the main body,

a first tube that is one of an inner tube and an outer tube of the moving member and that includes the first end of the moving member, and

a second tube that is the other of the inner tube and the outer tube, that does not include the first end of the moving member, and that is inserted into the gap in the faceplate,

wherein:

the fixing ring has a first thickness in the radial direction at the side of the first opening end and a second thickness in the radial direction at the side of the second opening end, the second thickness being larger than the first thickness,

the fixing ring is disposed in a space between the first tube and the second tube, and

the fixing ring is configured to move toward the faceplate along the central axis of the faceplate to sandwich a lumen of a living body tissue with the faceplate by the second tube inserted into the gap in the faceplate being pulled to fix the medical port to the lumen of the living tissue.

2. The medical port according to claim 1 , wherein an inner diameter of at least one of the first opening end and the second opening end is smaller than an outer diameter of the faceplate.

3. The medical port according to claim 1 , wherein the fixing ring is elastically deformable.

4. The medical port according to claim 1 , wherein:

an air supply conduit and an air suction conduit are formed in the through-hole of the main body and extend substantially parallel to the central axis of the faceplate, and

a position of an opening of the air supply conduit directed in a direction from the faceplate toward the fixing ring and a position of an opening of the air suction conduit directed in the direction from the faceplate toward the fixing ring are offset to each other in a direction along the central axis of the faceplate.

5. The medical port according to claim 1 , wherein the internal space of the fixing ring has a constant diameter in a longitudinal direction of the fixing ring.

6. The medical port according to claim 5 , wherein the outer circumferential surface of the fixing ring and the second tube of the moving member are configured to contact and conform to an inner diameter of an anus of a living body when the medical port is in use.