Device for withdrawing blood for diagnostic applications

US6419661B1 · kind B1 · utility

Assignee

• Roche Diagnostics GMBH · DE

Inventors

• Hans Kuhr · Mannheim, DE
• Richard Forster · Pfreimd, DE

Key dates

• Filing date: Mar 3, 2000
• Grant date: Jul 16, 2002
• Expiry date: Mar 3, 2020

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B5/150259
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Device for withdrawing Blood for Diagnostic Purposes. A lancet holder (8) for holding a lancet (7) and a lancet drive (12) having a loadable elastic drive spring (15) are provided within an elongated housing (2). The relaxing motion of the drive spring (15) is converted into a puncturing motion, after release of a locking device, to move the lancet (7), held by the lancet holder (8), at high speed in the puncturing direction until its tip exists out of an exit opening (5) of the housing (2).An improved handling and simultaneous minimization of pain is achieved by providing a two-sided rotary/translatory transmission (25) in the housing (2), whereina) the input side (24) of the rotary/translatory transmission (25) transforms the motion of a loading button (17), protruding out of the rear end (16) of the housing. (2), along a linear loading path (23) into a rotational motion of a lancet drive rotor (13) which rotates about a rotational axis extending parallel to the axis of the device (A) to load the lancet drive rotor (13) by tensioning the drive spring (15);b) when the lancet drive is triggered, the output side (26) of the rotary/translatory transmission (25) converts a rotational …