Abstract An artificial body vessel to be inserted into a human organ is collapsed and introduced into a catheter, which is brought to a required position in the human organ, where the artificial body vessel is released therefrom. A pair of foldable, elastic wire rings 10 are provided at the opposite ends of the artificial body vessel. A plurality of connecting wire rings bridge the end wire rings 10. A plurality of intermediate wire rings 12 bind and keep the connecting wire rings 11 transformed to a generally elliptical shape. The end wire rings 10, the intermediate wire rings 12 and the connecting wire rings 11 are folded thereby to collapse the artificial body vessel 7. The collapsed artificial body vessel 7 is inserted into a catheter. At the objective position of the blood vessel the artificial body vessel 7 is released, so that the resiliency of the end wire rings 10, the intermediate wire rings 12 and the connecting wire rings 11 restores the artificial body vessel 7 to its original tubular shape.
A substantially tubular appliance collapsible for insertion into human organs and capable of resilient restoration, characterized in that a pair of foldable, elastic end wire rings (10) are provided at opposite ends; that a plurality of foldable, elastic connecting wire rings (11) having a generally circular shape when no external force is applied thereto are circumferentially provided to bridge the opposite end wire rings (10), and are fixed thereto; and that a plurality of intermediate wire rings (12) are provided between the opposite end wire rings (10) and substantially parallelly thereto so as to keep the connecting wire rings (11) resiliently transformed to a generally elliptical shape.
Claim 2
Dependent Claim
51 words
The appliance collapsible for insertion into human organs and capable of resilient restoration, described in claim 1 and characterized in that the circumferences of the end wire rings (10) are divided by a plurality of points, at which loops (13) for a pull string (4) to be passed through are provided.
Claim 3
Dependent Claim
119 words
The appliance collapsible for insertion into human organs and capable of resilient restoration, described in claim 1 and characterized in that a pair of foldable, elastic end wire rings (10) are provided at the oppposite ends of a tube (7) made of cloth or a sheet of flexible material; that a plurality of foldable, elastic connecting wire rings (11) having a generally circular shape when no external force is applied thereto are provided to bridge the opposite end wire rings (10) and are fixed thereto; and that a plurality of intermediate wire rings (12) are provided between the opposite end wire rings (10) so as to keep the connecting wire rings (11) resiliently transformed to a generally elliptical shape.
Claim 4
Dependent Claim
71 words
The appliance collapsible for insertion into human organs and capable of resilient restoration, described in claim 3 and characterized in that the foldable, elastic end wire rings (10) provided at the opposite ends of the tube (7) made of cloth or a sheet of flexible material have their respective circumferences divided by a plurality of points, at which loops (13) for a pull string (4) to be passed through are provided.