The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 26, 1978
Filed:
Jun. 06, 1977
Applicant:
Inventor:
Robert L Whalen, Cambridge, MA (US);
Assignee:
Thermo Electron Corporation, Waltham, MA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
A61F / ;
U.S. Cl.
CPC ...
3-14 ; 1283 / ; 138122 ;
Abstract
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 of stress forces. Convolutions in the tube walls provide flexibility without kinking.