Abstract: A compression stocking with the ability to change the applied pressure contains a foot portion, a calf portion, and a slit. The slit functions as a size-adjustable opening so that the compression stocking can be worn and removed conveniently. The size of the slit is controlled by at least one cord which is tethered around a first set of pulleys and a second set of pulleys. When the pressure applied by the foot portion and the calf portion needs to varied, a user adjusts the cord around the first set of pulleys and the second set of pulleys so that the overall pressure is changed. By utilizing a pressure sensing device, the exact pressure can be measured. Moreover, by using a cord retention device the probability of the cord loosening around the leg can be eliminated.

Abstract: An instrument used in laparoscopic surgery is disclosed, the instrument having a trocar having a hollow interior and a sharpened end, and at least two implements having working distal ends and associated shafts extending from the distal ends and terminating in respective handles at proximal ends thereof disposed within the hollow interior of the trocar, wherein the implements may be selectively advanced and retracted by an appropriate force applied to the respective handles of the implements.