Vascular graft with removable sheath

Details Vascular graft with removable sheath Vascular graft with removable sheath

1992-04-13

1993-09-21

Isabella, David

Prosthesis (i.e., artificial body members), parts thereof, or ai

Arterial prosthesis

Stent structure

623 12, A61F 206

Patent

active

052464520

ABSTRACT:
A porous graft is provided with a non-porous coating or sheath which does not adhere to the graft. After the graft is implanted into the patient, circulation is restored through the graft. The sheath is left in place temporarily while blood works its way through the wall of the porous graft to the non-porous sheath, where it is prevented from leaking. Clots form in the graft, sealing it. After a few minutes, the sheath is removed. The graft or the inside surface of the sheath can be pre-treated with a coagulant to accelerate clotting. The sheath is applied to the graft as a coating, e.g. by dipping or spraying, or as a separate sleeve, e.g. heat-shrinkable tubing. The sheath can be removed by cutting. Preferably, the sheath incorporates a string, strip, or ribbon of material which is attached to the sheath. For removal, the string is pulled, tearing the sheath which is removed with the string.

REFERENCES:
patent: 3105492 (1963-10-01), Jeckel
patent: 4321711 (1982-03-01), Mano
patent: 4512338 (1985-04-01), Balko et al.
patent: 4670286 (1987-06-01), Nyilas et al.
patent: 4731073 (1988-03-01), Robinson
patent: 4804381 (1989-02-01), Turina et al.
patent: 4816028 (1989-03-01), Kapadia et al.
patent: 4842575 (1989-06-01), Hoffman, Jr. et al.
patent: 4850999 (1989-07-01), Planck
patent: 4871365 (1989-10-01), Dumican
Jones et al., "A new sealant for knitted Dacron prostheses: Minimally cross-linked gelatin", Journal of Vascular Surgery, vol. 7, No. 3, Mar. 1988, pp. 414-419.
Harris et al. "An In Vitro Study of the Properties Influencing Staphylococcus Epidermidis Adhesion to Prosthetic Vascular Graft Materials", Ann. Surg., Nov. 1987, pp. 612-620.

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