A catheter for delivery of a therapeutic element (140), comprising: a flexible tube (102) defining a lumen, the flexible tube (102) having a proximal end and a distal end (148)； a cylindrical heating element (112) disposed at the distal end (148) of the flexible tube (102), said cylindrical heating element (112) defining a channel therethrough, the cylindrical heating element (112) including electrical conductors (104, 106) that extend along the flexible tube (112) in a longitudinal direction, the cylindrical heating element (112) being configured to have a layer of adhesive (160) on an internal surface thereof to retain a therapeutic element (140) at the distal end (148) of the flexible tube (102)； and a spring (150) disposed in the flexible tube (102) and proximal to the cylindrical heating element (112), the spring (150) having a proximal end (154) and a distal end (156), the proximal end (154 ) fixed within the flexible tube (102) and the distal end (156) configured for longitudinal movement within the flexible tube (102), the distal end (156) extending through the channel defined by the cylindrical heating element (112) in an uncompressed condition, where the spring (150) is configured to apply a force on a therapeutic element (140) retained at the distal end (156) of the flexible tube (102), and where the cylindrical heating element ( 112) is configured to heat by passing a current through the electrical conductors (104, 106) to soften the adhesive (160) until the force of the spring (150) exceeds the bond strength of the adhesive (160) and the spring (150) ejects the ele Therapeutic ment (140) of the distal end (148) of the flexible tube (102).Un catéter para la entrega de un elemento terapéutico (140), que comprende: un tubo flexible (102) que define un lumen, el tubo flexible (102) teniendo un extremo proximal y un extremo distal (148)； un elemento de calentamiento cilíndrico (112) dispuesto en el extremo distal (148) del tubo flexible (102), dicho elemento
