Patent ID: 7654584

Claim:
A guide bushing for guiding a tubular element in a bore of a coupling, the bushing being provided externally with retaining elements for retaining the bushing in the bore, and internally with guide shoes for guiding the tubular element inside the bushing, wherein the retaining elements and the guide shoes are associated with deformable portions of the bushing, the deformable portions being deformable between a first state in which the retaining elements are in an active position for anchoring the bushing in the bore and in which the guide shoes define a first section configured to pass the tubular element, and a second state in which the retaining elements are in an inactive position set back from the active position and in which the guide shoes define a second section, smaller than the first section and configured to pass the tubular element, and wherein the bushing is subdivided into first and second angular sectors, the first angular sectors being rigid and the second angular sectors being deformable, and each of the first and second angular sectors comprising both a central inwardly directed curved indentation, provided internally with one of the guide shoes, and two ridges extending on either side of the curved indentation to form the retaining elements.