Christiana Metals Corporation

Uti Inc.

John G Thomas

Thomas A Walraven

James B Hall

John K Eckert

Jeffrey M Farina

Jeffrey Charles Kelly

Joseph P Gadda

A multilayer composite tubular structure for use as a stent in surgical procedures has an outer layer of biocompatible material, a middle layer of radiopaque material, and an inner layer of biocompatible material. The layers are metallurgically bonded, to form a composite stent which is ductile and permits large deformation without delamination between the biocompatible and radiopaque layers. The composite structure formed is visible on a fluoroscope, yet does not obstruct the details of the stent itself, or of the anatomical features surrounding the stent. A process of forming a multilayer composite tubular structure is also disclosed. A tube formed from radiopaque material is coaxially surrounded by a tube of biocompatible material. The tubes are simultaneously reduced, such as by tube drawing, swaging, or deep drawing, until a composite structure of a desirable diameter and wall thickness is formed. The tubes are then heat treated to cause diffusion bonding of the biocompatible and radiopaque layers.

Multilayer composite tubular structure and method of making

A container adapted to contain a beverage or other goods is provided with an easy open top by a disk juxtaposed to a hole in the container lid and welded to the container lid by a ring weld circumscribing the hole. Access to the contents of the container is attained by pushing the disk into the container whereby the disk tears along the weld and does not separate from the lid.

Method of making container with easy open top

Container with easy open top

Growing community of inventors

Berwyn, PA, United States of America

John G Thomas