Patent ID: 8323229

Claim:
A balloon type stent system for treatment of obesity configured such that an injection expansion unit and a plurality of distribution expansion units extend in a longitudinal direction of a stent unit body formed by coupling two sheets of synthetic vinyl in the shape of a cylinder, the injection expansion unit and a plurality of distribution expansion units are divided uniformly along a circumference of the stent unit body, the injection expansion unit has an expansion agent injection port formed at one end thereof, and the distribution expansion units each have a distribution injection port communicating with a distribution channel formed in a circumferential direction of the stent unit body such that the distribution channel communicates with the other end of the injection expansion unit opposite to the end of the injection expansion unit at which the expansion agent injection port is formed in a longitudinal direction of the injection expansion unit, such that connection ends interconnecting the injection expansion unit and the distribution expansion units formed at the stent unit body are partially cut in a longitudinal direction such that the expansion units are divided into an integrated expansion unit and a separated expansion unit, the injection expansion unit and the distribution expansion units constituting the separated expansion unit are bent outward to form a balloon type stent unit, and such that a tube is formed in the shape of a cylinder which is flexible and thin, the tube is configured to have a length corresponding to a length of a lumen of a duodenum of an obese patient having the balloon type stent system for treatment of obesity inserted therein, and the tube is connected to a lower end of the stent unit body at a side where the integrated expansion unit of the balloon type stent unit is formed by a connection wire, wherein the integrated expansion unit configured to expand in the shape of a cylindrical tube by an expansion agent sequentially distributed to the injection expansion unit, the distribution channel, and the distribution expansion units constituting the integrated expansion unit and the separated expansion unit when the expansion agent is injected into the balloon type stent unit through the expansion agent injection port using a catheter provided to inject the expansion agent is configured to be inserted into a pylorus of a stomach, which is an outlet of the stomach, the tube is configured to be inserted into the lumen of the duodenum, and the separated expansion unit is configured to be caught by internal walls of the pylorus and the body of the stomach such that food directly moves into a small intestine, where the food is digested and absorbed, through the balloon type stent unit and the tube, thereby reducing nutrition absorptivity in the duodenum and thus lowering a degree of obesity of the obese patient.