Rectal dilators; rectal instruments, namely, surgical instruments for use in rectal surgery; medical tubing for rectal examination, namely, rectal tubes; medical tubing and tubing connectors for rectal examination, namely, rectal tube kits; cannulae; tubing for use with cannulas; dropper bottles for medical purposes in the nature of administering medication, sold empty; catheters; balloon catheters; dilatation catheters; respiratory catheters; catheters for medical use; catheter apparatus for gastroenterological use; protective guards being parts and fittings for catheters; tubing for use with catheters; catheters incorporating filters; suction tubes for medical purposes being medical tubing for suction; medical devices for placing and securing catheters