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:
Oct. 15, 1985
Filed:
Feb. 01, 1983
Perry A Nebergall, Laguna Hills, CA (US);
Robert C French, El Toro, CA (US);
Other;
Abstract
A method of dielectrically joining the mated ends of tubular members is, specifically, used in the formation of a cannula for insertion into a body cavity, duct, or vessel of a patient. The cannula preferably includes a parent cannula member and an integrally joined tip. The method comprises the steps of joining the mated ends of the tubular members to form a common joint, passing a high frequency electrical current between the electrodes of a dielectric heating device and through the mated ends of the tubular members to heat and fuse them together at said joint, concentrating the heat at the joint to form an integral cannula, permitting the hot air surrounding the joint to escape in order to prevent the burning or scorching of said cannula, pressurizing the joint to facilitate the escape of the hot air and to eliminate dimensional differences in the mated ends, and forming the mated ends of the tubular members while in a heated condition to provide smooth surfaces on the cannula.