RELEASE SYSTEM FOR A SELF-EXPANDING ENDOPROSTHESIS Russian patent published in 2021 - IPC A61F2/966 A61F2/97 

FIELD: medical equipment.

SUBSTANCE: invention relates to medical equipment, namely to a release system for a self-expanding endoprosthesis, in particular, a stent. The release system for a self-expanding endoprosthesis contains a catheter, an endoprosthesis (2), under an external influence having a first shape, reduced in volume, and after eliminating the external influence taking a second expanded shape at the place of use, and located so as to be configured to move in the catheter, a means for retaining (6, 7) the endoprosthesis (2), as well as a means intended for imparting an external influence on the endoprosthesis (2). The means for imparting an external influence on the endoprosthesis (2) constitutes a film sleeve (3) surrounding the endoprosthesis (2) in the reduced in volume shape thereof with the distal end (4) thereof and reaching the proximal end of the catheter with the proximal end (5) thereof so as to be capable of being pulled off the endoprosthesis (2), eliminating the external influence. The film sleeve (3) adjoins the proximal end of the endoprosthesis, extends along the entire length of the endoprosthesis to the distal end of the endoprosthesis, is there bent onto itself and extends back along the endoprosthesis to the proximal end of the catheter. Located in the film sleeve are perforations (9), cuts or thinning areas extending in the longitudinal direction and which causing a rupture of the film sleeve when pulling the film sleeve, thereby releasing the endoprosthesis as when removing the banana peel.

EFFECT: invention provides a possibility of reliably and accurately releasing the endoprosthesis at the place of use by simple means.

13 cl, 6 dwg