Sanitary sheath for a syringe for insemination by straw and its method of manufacture

摘要

The sheath (30) comprises a tube (31) and an end piece (32) that comprises a foot (33) introduced into an end portion of the tube (31), and a head (34) arranged in the extension of the tube (31). The foot (33) comprises, on the outer surface (40) thereof, a plurality of annular ribs (41-44) facing the inner surface (45) of the tube (31). The head (34) comprises a shoulder (38) facing the section (39) of the tube (31), projecting over the root of the foot (33). The end piece (32) and the tube (31) are attached to the periphery of at least one of said annular ribs exclusively by intrinsic welding. The method comprises the step of carrying out a peripheral tightening of the outer surface (37) of the tube on a level with the ribs (41 -44), and the step of applying a sonotrode to the outer surface (35-36) of the head (34).

主权项

1. A sanitary sheath for a syringe for insemination by straw (10), comprising a tube (31) and a tip (32) attached to the tube (31), which tip comprises a tail (33) inserted into an end portion of the tube (31) and a head (34) disposed in line with the tube (31), said tip (32) comprising a duct opening into the tube (31) at the proximal end of the tail (33) and out from the sheath at the outside surface (35, 36) of the head (34), which duct comprises an axially oriented portion (53) narrowing from the proximal end of the tail (33), said tail (33) comprising on its outside surface (40) a plurality of annular ribs (41-44) facing the inside surface (45) of the tube (31), said head (34) comprising a shoulder (38) facing the rim (39) of the tube (31) and jutting relative to the base of the tail (33); characterized in that the tip (32) and the tube (31) are exclusively fastened by intrinsic welding at the periphery of one or more said annular ribs (41-44).