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An experimental study of a new sutureless intraluminal graft with an elastic ring that can attach itself to the vessel wall  Masaru Matsumae, MD, Hatsuzo.

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Presentation on theme: "An experimental study of a new sutureless intraluminal graft with an elastic ring that can attach itself to the vessel wall  Masaru Matsumae, MD, Hatsuzo."— Presentation transcript:

1 An experimental study of a new sutureless intraluminal graft with an elastic ring that can attach itself to the vessel wall  Masaru Matsumae, MD, Hatsuzo Uchida, MD, Shigeru Teramoto, MD  Journal of Vascular Surgery  Volume 8, Issue 1, Pages (July 1988) DOI: / (88) Copyright © 1988 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

2 Fig. 1 Schematic drawing of elastic ring. A, Ring is made of flat spring, it overlaps by 4 mm, and its diameter is 13 mm before compression. B, Overlapping part is increased to 13 mm by compression and diameter is reduced to 8 mm. This process is reversible. C, Ring can be kept reduced in diameter by pinching overlap with forceps. D, Forceps is released and ring expands to its original size. Journal of Vascular Surgery 1988 8, 38-44DOI: ( / (88) ) Copyright © 1988 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

3 Fig. 2 Sutureless intraluminal graft with elastic ring. Elastic rings are placed at both ends of knitted Dacron graft 10 or 12 mm in diameter and are covered with graft cuff, which is turned over at both ends. Journal of Vascular Surgery 1988 8, 38-44DOI: ( / (88) ) Copyright © 1988 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

4 Fig. 3 Implantation procedure. SIGER is kept reduced in diameter by pinching overlapping part with forceps and introduced into aortic lumen far enough so that ring is fully covered with aortic wall, that is, overlap of aortic wall is at least 2 to 3 mm. At target forceps is released, ring expands to original size, and it attaches itself to vessel wall. No circular tie around ring is made. Journal of Vascular Surgery 1988 8, 38-44DOI: ( / (88) ) Copyright © 1988 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

5 Fig. 4 Macroscopic findings of resected specimens. Macroscopic examination showed neither aneurysmal change nor detachment of ring. A, 41 days; B, 55 days; C, 64 days; D, 80 days after implantation. Journal of Vascular Surgery 1988 8, 38-44DOI: ( / (88) ) Copyright © 1988 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

6 Fig. 5 Macroscopic findings of internal lumen. All grafts were covered with neointima and anastomotic lines were smooth. No detachment of ring was observed. A, 41 days; B, 55 days; C, 64 days; D, 80 days after implantation. Journal of Vascular Surgery 1988 8, 38-44DOI: ( / (88) ) Copyright © 1988 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

7 Fig. 6 Microscopic findings. Elastic lamella was stained black. Its thickness was reduced to half at ring. Neither amputation nor marked reduction of elastic fiber was observed. Overlap of 2 to 3 mm of aortic wall was preserved. A, distal end: 41 days; B, proximal end: 73 days; C, distal end: 73 days; D, distal end: 80 days after implantation. (Elastic—van Gieson stain; original magnification × 1.) Journal of Vascular Surgery 1988 8, 38-44DOI: ( / (88) ) Copyright © 1988 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

8 Fig. 7 Longitudinal section of graft 41 days after implantation. In inner one third of aortic wall compressed by ring, nucleus of smooth muscle cells disappeared. (Hematoxylin-eosin stain; original magnification × 100.) Journal of Vascular Surgery 1988 8, 38-44DOI: ( / (88) ) Copyright © 1988 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

9 Fig. 8 Aortography showed neither stenosis nor aneurysmal dilatation at anastomosis. A, 30 days; B, 41 days; C, 60 days; D, 80 days after implantation. Journal of Vascular Surgery 1988 8, 38-44DOI: ( / (88) ) Copyright © 1988 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

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