A medical device assembly is disclosed, comprising a medical device, such as a urinary catheter, and preferably having a hydrophilic surface coating, and a package forming a closed compartment around the catheter. The package is formed of at least one sheet of tearable material and comprises a first weld extending along a first side in a first direction of the package and a second weld extending along a second side in a second direction of the package. The first and second directions are different and preferably orthogonal to each other. A tear line is provided in the second weld, and arranged to direct a subsequent tear towards the first weld. Further, the first weld is provided with an inward protrusion, protruding inwardly towards the closed compartment, at a distance from the second weld. A corresponding method of production is also disclosed.