COMPACT MULTI-USE LANCING DEVICE

• US 20090099586A1
• Filed: 12/15/2008
• Published: 04/16/2009
• Est. Priority Date: 03/02/2004
• Status: Active Grant

• Current Assignee: Facet Technologies LLC
• Original Assignee: Facet Technologies LLC
• Inventors: Griffis, Jack, Buenger, David R., Vanhiel, Brian, Conway, William E., KOEPPEL, Bradley
• Granted Patent: US 8,034,068 B2
• Time in Patent Office: Days
• US Class Current: 606/182
• 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 5/150442 Blade-like piercing elements, e.g. blades, cutters, knives, for cutting the skin
• CPC Class Codes: A61B 5/150541 Breakable protectors, e.g. caps, shields or sleeves, i.e. protectors separated destructively, e.g. by breaking a connecting area
• CPC Class Codes: A61B 5/150618 Integrally moulded protectors, e.g. protectors simultaneously moulded together with a further component, e.g. a hub, of the piercing element
• CPC Class Codes: A61B 5/150717 manually removed
• 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 5/1513 comprising linear sliding guides comprising tooth-shaped elements A61B5/15132
• CPC Class Codes: A61B 5/15186 Devices loaded with a single lancet, i.e. a single lancet with or without a casing is loaded into a reusable drive device and then discarded after use; drive devices reloadable for multiple use
• 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

A multi-use micro-sampling or lancing device having an outer housing, a lancet holder that engages a lancet and constrains the lancet along a controlled and pre-defined path of travel during the lancing stroke, and a drive mechanism with a pair of opposed, off-axis torsion springs working in tandem to drive and return the lancet holder through its lancing stroke.

Claims

1-18. -18. (canceled)

19. A multi-use lancing device comprising:

a housing;

a lancet carrier comprising a receiver for releasably engaging a replaceable lancet, the lancet carrier translationally mounted within the housing, and wherein the lancet carrier moves along a linear stroke axis;

a drive spring comprising a first torsion spring having a coil portion carried on a first spring axle that is laterally offset from the linear stroke path, the drive spring advancing the lancet carrier along the linear stroke axis; and

a return spring comprising a second torsion spring having a coil portion carried on a second spring axle that is laterally offset from the linear stroke path, the return spring retracting the lancet carrier along the linear stroke axis.

20. The multi-use lancing device of claim 19, further comprising at least one linear track within the housing for constraining the lancet carrier to linear translational movement.

21. The multi-use lancing device of claim 19, wherein the lancet carrier further comprises at least one resilient release member for retaining the lancet carrier in a retracted charged position, and for release upon actuation of a trigger mechanism.

22. The multi-use lancing device of claim 21, wherein the at least one resilient release member comprises a pair of resilient compression arms, each having a barbed distal end for releasably engaging a retaining tab of the housing.

23. The multi-use lancing device of claim 19, wherein the drive spring is positioned opposite the linear stroke axis from the return spring.

24. The multi-use lancing device of claim 19, wherein each of the first and second torsion springs comprise a finger extending from the coil portion for engagement with the lancet carrier.

25. A lancing device comprising

a housing;

a lancet carrier within the housing, the lancet carrier carrying a lancet;

at least one guide element constraining the movement of the lancet carrier to a linear stroke path;

a drive spring comprising a first torsion spring having a coil portion carried on a first spring axle that is laterally offset from the linear stroke path, the drive spring advancing the lancet carrier along the linear stroke path; and

a return spring comprising a second torsion spring having a coil portion carried on a second spring axle that is laterally offset from the linear stroke path, the return spring retracting the lancet carrier along the linear stroke path.

26. The lancing device of claim 25, wherein the at least one guide element comprises a linear track within the housing.

27. The lancing device of claim 25, wherein the lancet carrier further comprises at least one resilient release member for retaining the lancet carrier in a retracted charged position, and for release upon actuation of a trigger mechanism.

28. The lancing device of claim 26, wherein the at least one resilient release member comprises a pair of resilient compression arms, each having a barbed distal end for releasably engaging a retaining tab of the housing.

29. The lancing device of claim 25, wherein drive spring is positioned opposite the linear stroke path from the return spring.

30. The lancing device of claim 25, wherein each of the first and second torsion springs comprise a finger extending from the coil portion for engagement with the lancet carrier.

31. A multi-use lancing device comprising:

a housing defining at least one guide element;

a lancet carrier comprising a receiver for releasably engaging a replaceable lancet, the lancet carrier mounted within the housing for translational movement along the at least one guide element, and wherein the lancet carrier is constrained to reciprocating movement along a linear stroke path;

a drive spring comprising a first torsion spring having a coil portion carried on a first axle that is laterally offset from the linear stroke path, the drive spring advancing the lancet carrier along the linear stroke path; and

a return spring comprising a second torsion spring having a coil portion carried on a second axle that is laterally offset from the linear stroke path, the return spring retracting the lancet carrier along the linear stroke path.

32. The multi-use lancing device of claim 31, wherein the at least one guide element comprises a linear track for engagement with the lancet carrier, the linear track extending parallel to the linear stroke path.

33. The multi-use lancing device of claim 31, wherein the lancet carrier further comprises at least one resilient release member for retaining the lancet carrier in a retracted charged position, and for release upon actuation of a trigger mechanism.

34. The multi-use lancing device of claim 33, wherein the at least one resilient release member comprises a pair of resilient compression arms, each having a barbed distal end for releasably engaging a retaining tab of the housing.

35. The multi-use lancing device of claim 31, wherein the drive spring is positioned opposite the linear stroke path from the return spring.

36. The multi-use lancing device of claim 31, wherein each of the first and second torsion springs comprise a finger extending from the coil portion for engagement with the lancet carrier.