Abstract: A bottle assembly is provided. The bottle has inner and outer bodies that are selectively engageable and form a space therebetween for insulation by air. The inner and outer bottles can be selectively secured by a deformable collar. The bottle assembly may have a vented nipple that promotes latch-on to an areola region of the nipple.

Abstract: In one embodiment of the invention, the tip has a conical portion. Four connection tabs are orthogonally and evenly spaced on the outer circumference of the conical portion. The tip has a flange surrounding an outer circumference of the conical portion and parallel to the connection tabs. Between the connection tabs and the flange is a gap. The connection tabs and gap have a size such that they securely connect the tip of the acoustic reflectometer. The tip also may have a set of handling tabs connected between the flange and the conical section which simplify attachment of the tip to and removal of the tip from the acoustic reflectometer. The inner diameter of the tip has a shape that provides a matching acoustic impedance to the ear canal.

Abstract: A handle/actuator for use with a steerable catheter having a tip assembly and four pull cables for bending said tip assembly, comprises a housing containing rotary and linear actuators. The rotary actuator is in the form of a wheel rotatably supported in said housing with a portion of said wheel being accessible from the exterior of said housing. Two of the pull cables are anchored to the wheel such that clockwise rotation of the wheel applies tension to one pull cable and counter-clockwise rotation of the wheel applies tension to the second pull cable. The linear actuator comprises a slider mounted in said housing and means exterior of the housing for moving the slider linearly. The third and fourth pull cables are anchored to the slider such that linear movement of the slider in one direction applies tension to the third cable and linear movement of the slider in the opposite direction applies tension to the fourth cable.