METHOD FOR MAKING STENTS AND DEVICE FOR MAKING STENTS Russian patent published in 2014 - IPC A61F2/90 B23K33/00 B23K26/22 B05C13/02 A61F2/00 

FIELD: medicine.

SUBSTANCE: device for making stents comprises a core and a sleeve. The core has a rigid and substantially cylindrical outer surface. The sleeve surrounds the core and has a variable inner diameter. The sleeve has a rest inner diameter. The core has an outer diameter. The rest inner diameter is less than the outer diameter. That provides extending the sleeve when fitting the core, and substantially placing it back to the inner rest diameter after the core is removed. According to the second version of the device for making the stents, the sleeve has a variable rest diameter and a working diameter. The working diameter is less than the rest diameter. The sleeve surrounds the core and contacts thereto, when the sleeve obtains the rest diameter. An auxiliary unit for making the stents comprises the sleeve having the inner diameter and configured to extend from the rest diameter to the working diameter after applying the expansive force. The working diameter is more than the rest diameter, which the sleeve has at rest. The sleeve is configured to place back to the rest diameter after the expansive force is removed from there. A method for making the stent by means of the device for making the stents according to the first version providing contacting the sleeve to the core for fastening the sleeve on the core. That is followed by contacting the sleeve to a metal relief sheet. The above sheet is then wrapped about the device, and the sheet ends are welded up to form the stent.

EFFECT: invention provides the protection of the upper surface of the stent during the making process.

30 cl, 9 dwg