A PIM holder for attaching a PIM device having a cable to a rail in a medical environment includes a holster and a clamping device. The holster includes an open end sized to receive a PIM device and includes a cable opening extending from the open end on a side adjacent the open end to a side opposite the open end. The clamping device is sized and configured to attach the holster to a rail. The clamping device includes a stationary jaw secured to the holster and a moving jaw disposed adjacent the stationary jaw. The stationary jaw and moving jaw form an opening that receives the rail in a lateral direction and forms a passage therebetween to capture the rail. An actuator is pivotable between an open position and a closed position to displace the moving jaw to open and close the clamping device.