Method for producing needle-equipped outer tube and needle-equipped outer tube

A needle-equipped outer tube comprising:

• a needle;
• a joint member comprising a needle insertion hole penetrating the joint member from a distal end to a proximal end, and a tapered portion in which an outer diameter decreases from a distal end side toward a proximal end side;
• and
• an outer tube member comprising a distal end connecting section having a tapered hollow portion configured to receive the tapered portion of the joint member,
• wherein the needle is located in the needle insertion hole,
• wherein the joint member comprises a thermally-welded section that is disposed between an inner surface of the tapered hollow portion and an outer surface of the needle at a location separated from a distal end of the distal end connecting section by a predetermined distance toward a proximal end of the distal end connecting section,
• wherein the joint member does not include a foamed portion.