Class 623/1.44 - Having plural layers

Subclass of Class 623 - Prosthesis (i.e., artificial body members), parts thereof, or aids and accessories therefor
Definition: Subject matter wherein the artificial blood vessel member
No. of patents: 284
Last issue date: 03/27/2012

Number	Title	Issue Date
4130904	Prosthetic blood conduit A prosthetic blood conduit comprises two porous concentrically associated tubes with a helical spring enclosed therebetween. Spring strength and frictional engagement between the spring and tubes enables the conduit to resist collapse under a wide variety...	12/26/1978
4086665	Artificial blood conduit An artificial blood conduit comprises two concentrically associated tubes. Convolutions in the tube walls provide flexibility and reduce the tendency to kink. The inner tube is porous to promote the growth of a stable biological interface. The outer tube ...	05/02/1978
3993078	Insert for use preferably in vascular surgery An insert for use preferably in vascular surgery which includes an unperforated, hollow body of substantially circular cross-section. The body is provided with a spiral line of fracture extending about the periphery of the body and defining continuous spi...	11/23/1976

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