A medical instrument (10) comprises a funnel (12) having a tube (14) with oppositefirst and second ends (16) and (18) respectively, with a conical portion (20)at the first end (16). Conical portion (20) has an outer conical surface (22) whichincreases in outer diameter in a direction from the second end (18) to the firstend (16). A mouth (24) is provided at an end of the conical portion (20) distantto the end (16), and a lip (26) extends about a part of the circumference of the mouth(24). The lip (26) protrudes from the conical surface (22). A first grip (28) isformed axially along the tube (14) and provides a visual reference to the lip (26).
