Patent ID: 8721320
Filing Date: 2014-05-13
Classification: A61B,B29C

Abstract:
1. A device for stretching a plastic ring, comprising: pushing means defined by a hollow body internally of which a plurality of ribs develop; a loading body for at least a rubber band, having a prevalent development along a direction and exhibiting a plurality of grooves for facilitating sliding along the direction of the plurality of ribs on the corresponding plurality of grooves; the loading body comprising: a first substantially conical portion exhibiting a base, having an external diameter and an apex; a second portion exhibiting a proximal end, having an external diameter and a distal end, having an external diameter; the proximal end exhibiting the external diameter which is greater than the external diameter of the distal end; the proximal end being contiguous to the base and the external diameter of the base exhibiting a same length as the external diameter of the proximal end; wherein the second portion is truncoconical, is located downstream of the base of the first substantially conical portion and exhibits, starting from the external diameter of the base of the first substantially conical portion, a transverse section having a decreasing progression.