Lancing device for taking blood samples

• US 20140100481A1
• Filed: 10/04/2013
• Published: 04/10/2014
• Est. Priority Date: 10/04/2012
• Status: Active Grant

• Current Assignee: Gerresheimer Regensburg GmbH (Gerresheimer AG)
• Original Assignee: Gerresheimer Regensburg GmbH (Gerresheimer AG)
• Inventors: VOLKMUTH, Julia, EDER, Andreas
• Granted Patent: US 9,629,579 B2
• Time in Patent Office: Days
• US Class Current: 600/583
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• CPC Class Codes: A61B 5/150259 Improved gripping, e.g. with high friction pattern or projections on the housing surface or an ergonometric shape
• CPC Class Codes: A61B 5/150412 Pointed piercing elements, e.g. needles, lancets for piercing the skin blade-like piercing elements A61B5/150442
• CPC Class Codes: A61B 5/150503 Single-ended needles hollow piercing element tip design A61B5/150396, needle sets for catheters A61M25/06, needles for bringing media into the body A61M5/32
• CPC Class Codes: A61B 5/15077 characterized by physical shape
• CPC Class Codes: A61B 5/150786 Optical identification systems, e.g. bar codes, colour codes
• CPC Class Codes: A61B 5/150824 by visual feedback
• CPC Class Codes: A61B 5/150832 by topography of the surface, e.g. Braille, embossed printing
• CPC Class Codes: A61B 5/15113 Manually triggered, i.e. the triggering requires a deliberate action by the user such as pressing a drive button
• CPC Class Codes: A61B 5/15117 comprising biased elements, resilient elements or a spring, e.g. a helical spring, leaf spring, or elastic strap
• CPC Class Codes: A61B 5/15144 comprising driving means, e.g. a spring, for retracting the piercing unit into the housing
• CPC Class Codes: A61B 5/1519 comprising driving means, e.g. a spring, for propelling the piercing unit
• CPC Class Codes: A61B 5/15194 fully automatically retracted, i.e. the retraction does not require a deliberate action by the user, e.g. by terminating the contact with the patient's skin

Abstract

The invention relates to a lancing device (1) for taking blood samples, comprising a housing (2), an axially displaceable lancet holder element (32) for holding a replaceable lancet (12), a drive unit (30) comprising at least a lancing spring element (31) for driving the axially displaceable lancet holder element (32) in a lancing direction (18), and a tensioning carriage part (26) which can be fixed in a tensioning position (36) for tensioning the lancing spring element (31), according to the invention the fixable tensioning carriage part (26) being temporarily axially fixed in this tensioning position (36) by means of a latching apparatus (35) which can be latched to the axially displaceable lancet holder element (32).

Claims

1. A lancing device for taking blood samples, comprising a housing, an axially displaceable lancet holder element for holding a replaceable lancet, a drive unit comprising at least a lancing spring element for driving the axially displaceable lancet holder element in a lancing direction, and a fixable tensioning carriage part which can be fixed in a tensioning position for tensioning the lancing spring element, wherein the fixable tensioning carriage part is temporarily axially fixed in the tensioning position by means of a latching apparatus which can be latched to the axially displaceable lancet holder element.

2. The lancing device according to claim 1, wherein the latching apparatus comprises a latching arm element which can be deflected radially in relation to the lancing direction and which interacts with a positive fit with the axially displaceable lancet holder element during fixing of the fixable tensioning carriage part in the tensioning position.

3. The lancing device according to claim 1, wherein the axially displaceable lancet holder element comprises a latching rib which can be engaged from behind by the latching apparatus and which extends axially on the axially displaceable lancet holder element.

4. The lancing device according to claim 1, wherein the latching apparatus comprises a latching arm element which can be deflected radially in relation to the lancing direction and which comprises means for fixing the fixable tensioning carriage part to the latching arm element.

5. The lancing device according to claim 1, wherein the latching apparatus is arranged in the housing such that a latching arm element which can be deflected radially in relation to the lancing direction is arranged such that it can be disengaged radially by a translatory change in position of the axially displaceable lancet holder element in the lancing direction, such that the fixable tensioning carriage part can be displaced in translation from the tensioning position into a relaxed position by a compression spring element.

6. The lancing device according to claim 1, wherein the latching apparatus interacts with the fixable tensioning carriage part on a basis of a relative axial position of the axially displaceable lancet holder element in relation to the housing.

7. The lancing device according to claim 1, wherein the latching apparatus comprises a sleeve part which radially surrounds the axially displaceable lancet holder element externally at least in part.

8. The lancing device according to claim 1, wherein a tensioning unit comprises a further tensioning carriage part for displacing the fixable tensioning carriage part, the further tensioning carriage part comprising an engagement element for radial engagement of the latching apparatus which can be latched to the axially displaceable lancet holder element.

9. The lancing device according to claim 8, wherein the engagement element comprises a sliding guide face which is inclined in relation to the lancing direction.

10. The lancing device according to claim 1, wherein the axially displaceable lancet holder element the fixable tensioning carriage part or a further tensioning carriage part each comprise a sleeve part.