FLEXIBLE CATHETER WITH ATTACHED CENTRAL STAND AND METHOD FOR MAKING IT Russian patent published in 2014 - IPC A61M25/00 A61M25/01 A61B18/14 A61B5/42 

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely to a method for making a flexible catheter having a central stand coupled with a catheter tip within a flexible section to form an integral composite structure of the tip which maximises an open internal volume of the catheter tip and a torsional rigidity of the catheter tip along with minimising an external diameter of the catheter tip and providing a uniform flexion of the tip in one plane. The method for making the distal tip for the flexible catheter involves the following stages: coating a cylindrical core having a diameter with the first layer of a thermoplastic material; covering the first layer of the thermoplastic material with a sheath layer; coating the sheath layer with the second layer of the thermoplastic material; removing the cylindrical core, and forming thereby a tubular member; placing a stand having a width substantially identical to the diameter of the cylindrical core, a length substantially greater than the width and a thickness substantially lesser than the width into the tubular member; providing semi-cylindrical cores from each side of the stand to form an intermediate assembly; and heating the intermediate assembly to create a thermal connection between the first layer and the stand.

EFFECT: method is simple and requires no valuable time.

11 cl, 14 dwg