Other suitable lubricant compositions known in the art can also be employed. [0086] In general, the ratio of water (or other solvent, e.g. saline, Ringer's solution, etc.) to glycerin in the gel can vary from about 10 to 100:90 to 0, preferably about 20 to 90:80 to 10, and most preferably about 85:15, respectively. [0087] The viscosity of the gel can vary from about 20,000 to about 350,000 centipo