Tissue closure and tissue closing device
A living body tissue closing device includes an elongated body element, a clip (living body tissue closure) for closing a wound hole which penetrates a living body tissue membrane, and a thread. The body element includes a sheath, and elongated feeding and deformation arrangement. The elongated feeding and deformation arrangement includes a covered tube, a pusher tube, a thread anchoring cap, a guide wire, and a stopper. The clip includes a seal portion for covering the wound hole and a peripheral portion of the wound hole from one side of the living body tissue membrane, a deformation portion deformable between a first form in which the deformation portion can pass through the wound hole and a second form in which the deformation portion cooperates with the seal portion to sandwich the living body tissue membrane therebetween from the other side, and a fastener portion for retaining the deformation portion in the second form.
1. A tissue closure for closing an opening penetrating a tissue membrane comprising:
a seal portion configured to cover the opening penetrating a tissue membrane and a surrounding portion of the opening from one side of the tissue membrane;
a framework body portion deformable between a contracted form in which the framework body portion is extended in a direction substantially perpendicular to a reference plane and is contracted in a direction substantially parallel to the reference plane and an expanded form in which the framework body portion is contracted in the direction substantially perpendicular to the reference plane and is expanded in the direction substantially parallel to the reference plane, the seal portion and the framework body portion being integrally molded in one piece from a bioabsorbable material; and
a connecting portion connecting the seal portion and the framework body portion, the connecting portion consisting of a single bendable plate so that the connecting portion permits pivoting motion of the seal portion in only a single plane.
2. The tissue closure according to claim 1 , further comprising a fastener portion configured to retain the framework body portion when the framework body portion is in a predetermined form between the contracted form and the expanded form.
3. The tissue closure according to claim 1 , wherein the framework body portion possesses a height when the framework body portion is contracted form, the height of the framework body portion is equal to or less than 10 mm.
4. A tissue closing device for closing an opening which penetrates a tissue membrane, comprising:
an elongated body element having a distal end portion configured to pass though the opening;
a tissue closure removably mounted at a distal end portion of the body element and configured to pass through the opening together with the distal end portion of the body element to close the opening; and
deformation means for deforming a portion of the tissue closure;
the tissue closure comprising:
a seal portion for covering the opening and a surrounding portion of the opening from one side of the tissue membrane;
a deformation portion deformable to a first form in which the deformation portion is configured to pass through the opening and deformable by the deformation means to a second form in which the deformation portion is positioned on a side of the tissue membrane opposite the one side and cooperates with the seal portion to sandwich the tissue membrane between the seal portion and the deformable portion;
a fastener portion for retaining the deformation portion in the second form;
the deformation portion is connected to the seal portion by a connecting portion which is configured to be positioned in the opening penetrating the tissue membrane when the tissue membrane is sandwiched between the seal portion and the deformation portion, the connecting portion consisting of a single bendable plate so that the connecting portion permits pivoting motion of the seal portion in only a single plane; and
the seal portion and the deformation portion being integrally molded in one piece from a bioabsorbable material.
5. The tissue closing device according to claim 4 , wherein the deformation portion possesses a framework shape.
6. The tissue closing device according to claim 5 , wherein the deformation portion has an opening portion configured to receive at least a part of the fastener portion as the deformation portion is deformed to the second form.
7. The tissue closing device according to claim 6 , wherein the fastener portion comprises at least one pawl insertable into the opening portion and engageable with the deformation portion.
8. The tissue closing device according to claim 4 , wherein the deformation portion possesses a quadrangular shape formed integrally from four links and is deformable such that two corner portions at diagonally opposite positions of the quadrangular shape move toward and away from each other.
9. The tissue closing device according to claim 8 , wherein the fastener portion is configured to control a distance between the two corner portions.
10. The tissue closing device according to claim 8 , wherein the fastener portion is constructed to control a distance between the two corner portions to any one of a plurality of different distances.
11. The closing device according to claim 4 , wherein the fastener portion is constructed to control a degree of deformation of the deformation portion to one of a plurality of deformed states.
12. The tissue closing device according to 4 , wherein the fastener portion is constructed to allow deformation of the deformation portion in a direction in which a degree of deformation of the deformation portion increases while also preventing deformation of the deformation portion in another direction in which the degree of deformation of the deformation portion decreases.
13. The tissue closing device according to claim 4 , wherein the seal portion is plate shaped.
14. The tissue closing device according to claim 4 , wherein the fastener portion, the seal portion and the deformation portion are integrally molded in one piece from the same material.
15. The tissue closing device according to claim 4 , wherein the fastener portion and the deformation portion are individually inclined with respect to the seal portion.
16. The tissue closing device according to claim 4 , wherein the tissue closure is provided with a hole through which a guide wire is to pass.
17. The tissue closing device according to claim 4 , further comprising pulling means for pulling the tissue closure, the deformation portion being deformed by the deformation means while the tissue closure is being pulled by the pulling means.
18. The tissue closing device according to claim 17 , wherein the pulling means is a string.
19. The tissue closing device according to claim 18 , wherein the fastener portion has a hole through which the string is to be threaded.
20. The tissue closing device according to claim 4 , wherein the deformation means presses the deformation portion to deform the deformation portion into the second form.
21. The tissue closing device according to claim 4 , wherein at least a portion of the deformation means is a tubular member provided on the body element.
22. The tissue closing device according to claim 4 , wherein the tissue membrane is a blood vessel wall, and the one side is an inner surface of the blood vessel wall while the side opposite the one side is an outer surface of the blood vessel wall.