Appliance to be implanted, method of collapsing the appliance to be implanted and method of using the appliance to be implanted

Claim 1

The method of collapsing the appliance to be implanted, comprising a front end wire ring, a rear end wire ring arranged facing to the front end wire ring, a tubular cover which connects the front end wire ring and the rear end wire ring, and a plurality of intermediate wire rings spaced apart from each other between the front end wire ring and the rear end wire ring, in which each of the wire rings is given flexibly foldable elasticity, characterized by that the circumference of said front end wire ring is divided at dividing points into four or an even number over four segments, that hooking means are formed for a front pull string to be passed through at every other dividing point and that the circumferences of the intermediate wire rings are fixed to the tubular cover by suturing or with adhesive at positions which correspond to midpoints between each adjacent two of the dividing points on the front end wire ring, and that the method comprises the steps of: folding said front end wire ring into a wavy shape with the dividing points each of which is provided with a hooking means forming forwardly directed peaks and the other dividing points forming bottoms of forwardly directed valleys, folding the intermediate wire rings and the rear end wire ring each into a wavy shape aligned with that of the front end wire ring, and inserting the whole appliance to be implanted into a catheter.

Claim 2

The method of collapsing the appliance to be implanted, comprising a front end wire ring, a rear end wire ring arranged facing to the front end wire ring, a tubular cover which connects the front end wire ring and the rear end wire ring, and a plurality of intermediate wire rings spaced apart from each other between the front end wire ring and the rear end wire ring, in which each of the wire rings is given flexibly foldable elasticity, characterized by that the circumference of said front end wire ring is divided at dividing points into four or an even number over four segments, that hooking means are formed for a front pull string to be passed through at every other dividing point and that the circumferences of the intermediate wire rings are fixed to the tubular cover by suturing or with adhesive at positions which correspond to midpoints between each adjacent two of the dividing points on the front end wire ring, and that the method comprises the steps of: folding said front end wire ring into a wavy shape with the dividing points each of which is provided with a hooking means forming forwardly directed peaks and the other dividing points forming bottoms of forwardly directed valleys, folding the intermediate wire rings and the rear end wire ring each into a wavy shape aligned with that of the front end wire ring, and inserting the whole appliance to be implanted into a catheter.