This is a combination technique, because it acts both on the stomach and on the small intestine, and it causes an effect which is restrictive and malabsorptive at the same time.
The restrictive effect is achieved by leaving a very small stomach, through sectioning it with instruments which staple and cut it.
This reduces the intake capacity to a great extent, the patient gets satiated with small amounts of food, and does not feel hungry.
Besides, a malabsorptive effect is added on, by shortening the small intestine, so that the absorption surface is highly reduced. This leads to a higher weight loss, which is sustained through the years. This technique is riskier than Sleeve Gastrectomy, but it has higher long-term efficacy.