Pricking Device for Taking a Blood Sample

• US 20110144683A1
• Filed: 05/29/2009
• Published: 06/16/2011
• Est. Priority Date: 06/06/2008
• Status: Active Grant

• Current Assignee: Gerresheimer Regensburg GmbH (Gerresheimer AG)
• Original Assignee: Gerresheimer Regensburg GmbH (Gerresheimer AG)
• Inventors: Knie, Andreas, Vaclav, Vojan, Butz, Marion
• Granted Patent: US 8,828,039 B2
• Time in Patent Office: Days
• US Class Current: 606/182
• CPC Class Codes: A61B 5/1411 by percutaneous method, e.g. by lancet
• CPC Class Codes: A61B 5/1427 Multiple blood sampling, e.g. at periodic or pre-established intervals
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• 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 5/15113 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 5/15128 comprising 2D- or 3D-shaped elements, e.g. cams, curved guide rails or threads comprising tooth-shaped elements A61B5/15132
• CPC Class Codes: A61B 5/1513 comprising linear sliding guides comprising tooth-shaped elements A61B5/15132
• 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 pricking device (1) for taking a blood sample, comprising a movable holding device (5) for pricking means (4), means (12) for driving the movable holding device and a release device (19) for releasing the pricking movement (13) of the pricking means. When the release device has been manually actuated, the movable holding device can be axially moved by a spring force of a drive spring (9) of the drive means (12), and a tensing device (22) for tensing the drive spring. Said tensing device comprises a tensing mechanism (23) comprising means (24) for axially stopping the movable holding device during the tensing of the drive spring and means (25) for working during the tensing of the drive spring enabling said pricking device to be comfortable to use even when being used several times.

Claims

1. Pricking device (1) for taking a blood sample with a moveable holder device (5) for a pricking means (4), with means for driving the moveable holder device (5), with a trigger device (19) for triggering a pricking movement (13) of the pricking means (4), wherein after manual activation of the trigger device (19) the moveable holder device (5) can be moved axially by means of spring force of a drive spring (9) of the drive means (12), characterised by a tensioning device (22) for tensioning the drive spring (9), wherein the tensioning device (22) comprises a tensioning mechanism (23) comprising means (24) for axial locking of the moveable holding device (5) during tensioning of the drive spring (9) and comprising means (25) for performing work during tensioning of the drive spring (9).

2. Pricking device (1) according to claim 1, characterised in that the tensioning mechanism (23) comprises an axially moveable tensioning slide (11).

3. Pricking device (1) according to claim 2, characterised in that the axially moveable tensioning slide (11) has a sliding support for a control curved track element (8) and/or a drive spring mounting.

4. Pricking device (1) according to claim 1, characterised in that the means (25) for performing work comprise spring elements, preferably two coil springs (26, 27).

5. Pricking device (1) according to claim 1, characterised in that the means (25) for performing work comprise a tensioning head (10) of the tensioning device (22) sprung-mounted on a base body (2) of the pricking device (1).

6. Pricking device (1) according to claim 1, characterised in that the means (25) for performing work have a working spring force F_D and a drive spring (9) has a drive spring force F_S, wherein the working spring force F_D is greater than the drive spring force F_S.

7. Pricking device (1) according to claim 1, characterised in that the drive means (12) comprise a coupling element (6) between the moveable holding device (5) and a control curved track element (8) of the drive means (12).

8. Pricking device (1) according to claim 1, characterised in that the drive means (12) comprise a curved track, preferably an arc-shaped curved track (7).

9. Pricking device (1) according to claim 1, characterised in that the drive means (12) comprise a control curved track element (8).

10. Pricking device (1) according to claim 1, characterised by a curved track follower (17) arranged inside a profile element of a curved track of the drive means (12).

11. Pricking device (1) according to claim 10, characterised in that the curved track follower (17) has a forward drive by means of which the curved track follower (17) can be moved along the curved track in a first direction.

12. Pricking device (1) according to claim 10, characterised in that the curved track follower (17) has a reverse drive by means of which the curved track follower (17) can be moved along the curved track along in a second direction opposite the first direction.