A novel hemostatic device, Adapty (Medikit, Tokyo, Japan), was developed to achieve effective and comfortable hemostasis following transradial procedures. The device consists of a pad fixed to a transparent plastic plate and a self-adhesive strap. The catheter sheath is removed from the radial artery after the pad has been positioned precisely over the puncture site, with the strap attached to the plate. Compression pressure then is adjusted with the self-adhesive strap, as is required with occlusive clamps. Patients do not need to maintain hyperextension of the wrist after the procedure. The wrist can be mobilized immediately after application. The efficacy of Adapty was evaluated in prospective observations of 200 patients. The device was successfully applied in all patients immediately after sheath removal. No patient required interruption of compression because of pain, congestion or ischemia. Complete hemostasis was obtained in 199 patients (99.5%), and the device caused no vascular complications. This study demonstrates that Adapty is highly effective for achieving hemostasis after transradial procedures.