Abstract: A catheter useful in draining cerebrospinal fluid from the ventricles of a brain. The catheter utilizes a series of holes arranged in a helical pattern at the forward or ventricular end portion of the catheter. Exterior grooves may be provided in the ventricular end of the catheter within which the holes are protectively sheltered from contact with surrounding ventricular tissue. The catheter, and particularly its ventricular end, may be capable of elastic elongation upon insertion of a rigid stylet within the catheter, the diameter of the ventricular end portion become reduced in response to its axial elongation to facilitate disengagement of the catheter with the surrounding ventricular tissue to permit the catheter to be withdrawn.

Abstract: The present invention relates to a golf ball retrieving device for removing golf balls from water hazards and other areas that otherwise would be difficult to access. The device comprises a uniquely shaped net particularly adapted to be removably attached to an end of an existing ball retriever having an extendable shaft. The net and frame are configured and arranged so as to easily retrieve golf balls from water hazards even when the golf ball is not in plain view. The device effectively sweeps a substantial portion of terrain as it is retracted toward the user enabling the user to retrieve golf balls that are contained in that area. The frame is configured to discourage weeds from entering and obstructing the net.

Abstract: A rotary tool having an opening with a first set of peripheral notches providing bearing surfaces for engaging English size driving portions of threaded members and a second set of peripheral notches providing bearing surfaces for engaging metric size driving portions of threaded members.