A torque device for selectively securing, engaging, or gripping an elongate medical device is disclosed. The torque device can be configured to permit torquing of the elongate medical device by manipulation of the torque device. A securement mechanism for selectively securing, engaging, or gripping an elongate medical device is also disclosed. The securement mechanism may be adapted for use with the disclosed torque device, or the securement mechanism may also be adapted for use with other medical devices. For example, the securement mechanism may be adapted for use with a suture securement apparatus.