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:
May. 14, 1996
Filed:
Oct. 31, 1994
Applicant:
Inventors:
Vladimir Bittner, Bern, CH;
Roger Dekumbis, Zurich-Oerlikon, CH;
Assignee:
Sulzer Brothers Ltd., Winterthur, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
128898 ; 604239 ; 604264 ; 604274 ;
Abstract
The hollow needle (1) for medical use comprises a duct (10), which usually contains an aperture (11) which is elliptic or similar to an ellipse. The edge (14) of this aperture (11) is rounded by melting in the converging part (14') when regarded from the point (1') of the hollow needle (1). The process for rounding the edge (44) by melting uses a laser (45) which is pulsated or operates continuously, in the effective range (45') of which the part (44') to be rounded of the edge (44) lies.