PROBLEM TO BE SOLVED: To provide a medical device having superior production stability, and to provide a method for producing the same.SOLUTION: A catheter 10 includes an outer layer 60, groove parts 28, and hollow pipes 32. The outer layer 60 consists of a first resin composition. The hollow pipe 32 is fixed to the groove part 28 formed in the outer layer 60 through an adhesive 62 consisting of a second resin composition. A temperature A that is the melting point or the softening point of the second resin composition constituting the adhesive 62 is lower than a temperature B that is the softening point or the melting point of the first resin composition constituting the outer layer 60.