Medical tube securing jig

A medical tube securing jig for securing a medical tube to a transdermal part in inserting the medical tube from an outside of a body to an inside of the body, the medical tube securing jig comprising:

• a skin securing member having a flange portion which is embedded in the transdermal part and a cylindrical protruding body which protrudes from the flange portion at least toward the outside of the body;
• and
• a medical tube holding mechanism part which is mounted in a state where the medical tube holding mechanism part is inserted into the protruding body of the skin securing member so as to hold the medical tube, wherein
• a recessed portion whose opening is directed toward the outside of the body is formed on the protruding body of the skin securing member, a first through hole which allows the medical tube to pass therethrough is formed in a bottom surface of the recessed portion in a state where the first through hole penetrates the bottom surface toward the inside of the body and female threads are formed on a side wall surface of the recessed portion between the opening and the bottom surface,
• the medical tube holding mechanism part includes:
• a sealing member made of a material which has elasticity and liquid sealing property, the sealing member having a second through hole which allows the medical tube to pass therethrough, the sealing member being engageable with the recessed portion by fitting engagement in a state where the medical tube is made to pass through the second through hole, the sealing member being elastically deformed when a pressing force in a direction from the outside of the body to the inside of the body is applied to the sealing member in a state where the sealing member engages with the recessed portion by fitting engagement thus being brought into close contact with a side wall surface of the recessed portion, the bottom surface of the recessed portion, and the medical tube;
• and
• a sealing member pressing body disposed at a position more outside of the body than the sealing member, the sealing member pressing body having male threads being threadedly engageable with the female threads formed on the recessed portion, the sealing member pressing body having a third through hole which allows the medical tube to pass therethrough along a center axis of the male threads, the sealing member pressing body being configured to apply the pressing force to the sealing member in fastening the sealing member pressing body by making the male threads engage with the female threads in a state where the medical tube is made to pass through the third through hole, wherein
• a slit portion is formed in the sealing member, the slit portion reaching the other end side from one end side of the sealing member along a longitudinal direction of the medical tube, the slit portion reaching the second through hole in a radial direction.