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US 3,974,526 AGranted
Vascular prostheses and process for producing the same
OwnerIrving I. Dardik, Herbert Dardikinventors
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OwnerIrving I. Dardik, Herbert Dardikinventors
Estimating the term…
A process for producing tubular prostheses for use in vascular reconstructive surgery is described. The invention comprises chemically and structurally modifying the veins and arteries of the human umbilical cord to obtain a vascular grafting material which is superior to existing blood vessel substitutes. The process involves the steps of (a) removing the internal veins and arteries of the umbilical cord from its outer tissue; (b) separating these vessels from one another; (c) treating the vessels with cleansing and tanning agents to eliminate antigenicity; (d) shaping the vessels by inserting a mandrel; and (e) applying a mesh support to the shaped and tanned prosthesis. The process of repairing, replacing and augmenting a human and animal vein or artery using the prosthesis produced by the process is also described.
A process for producing a tubular prostheses for use in vascular reconstructive surgery comprising the steps of washing an umbilical cord to remove blood from within the vessels thereof and distending the vein therein.
A process for producing a tubular prosthesis for use in vascular reconstructive surgery which comprises the steps of:
A process for producing a tubular prosthesis from a human umbilical cord vein or artery for use in vascular reconstructive surgery which comprises the steps of:
A process for producing a tubular prosthesis for vascular reconstructive surgery from the veins and arteries of the human umbilical cord which comprises the steps of:
A tubular prosthesis suitable for repairing, replacing or augmenting a vein or artery of a human, primate or mammal body consisting of a vein or artery of a human umbilical cord that has been separated from the outer umbilical cord tissue, shaped on a mandrel, treated with a hardening agent, treated with an antithrombogenic agent, and fitted with a mesh support.
A tubular prosthesis for repairing, augmenting or replacing a vein or artery of a mammal comprising an umbilical cord essentially free of blood and having therein a vein in distended condition.
A tubular prosthesis suitable for repairing or augmenting a vein or artery of a human, primate or mammal body, comprising a human umbilical cord vessel having a shape other than that in which it occurs in nature and having a hardness greater and a thrombogenicity lower than it has in its natural state as a prosthesis, and a mesh support fitted to said vessel, said vessel being free of outer umbilical cord tissue.
Dependencies are inferred from the claim text.