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:
Jun. 25, 2002
Filed:
Oct. 02, 2000
Hans-Jurgen Kuhr, Mannheim, DE;
Herbert Argauer, Pirk, DE;
Roche Diagnostics GmbH, Mannhein, DE;
Abstract
Blood lancet for withdrawing blood for diagnostic purposes. It has a housing with an outlet opening for the tip of a lancet, and a lancet drive with a drive rotor driven in a sense of rotation by a drive spring. The drive rotor converts the relaxation movement of the drive spring to a pricking movement, moving the lancet with high speed in pricking direction, until the tip protrudes from the outlet opening. The drive rotor has a pressure surface directed radially outwardly and running around the rotation axis with varying center distance. The pressure surface has a vertex with maximum center distance, and a propelling section, following the vertex against the sense of rotation and having a center distance decreasing against the sense of rotation. The drive spring effects a pressure on the propelling section of the pressure surface, thus driving the drive rotor in sense of rotation, whereas the drive rotor is coupled to the lancet holder.