A catheter device for transporting an implant to a target location in a body lumen and also for releasing the implant at the target location. The device includes an outer shaft configured to transport the implant to the target location, and an implant capsule configured to receive the implant. The implant capsule has a tubular capsule core, which surrounds the implant prior to the release. The capsule core, at a proximal end of the capsule core, has a plurality of tabs for fixing the capsule core to the outer shaft, which tabs protrude from a tubular portion of the capsule core along an axial direction of the capsule core.