Single use device for blood microsampling

• US 20030144609A1
• Filed: 01/23/2003
• Published: 07/31/2003
• Est. Priority Date: 01/31/2002
• Status: Active Grant

• Current Assignee: Facet Technologies LLC
• Original Assignee: Facet Technologies LLC
• Inventors: Kennedy, Gwenn E.
• Granted Patent: US 7,357,808 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 5/150198 Depth adjustment mechanism at the proximal end of the carrier of the piercing element
• 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 5/150519 Details of construction of hub, i.e. element used to attach the single-ended needle to a piercing device or sampling device
• CPC Class Codes: A61B 5/150549 Protectors removed by rotational movement, e.g. torsion or screwing
• CPC Class Codes: A61B 5/150564 Protectors removed by pulling or pushing
• 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 5/150809 by audible feedback
• CPC Class Codes: A61B 5/150816 by tactile feedback, e.g. vibration
• CPC Class Codes: A61B 5/150824 by visual feedback
• CPC Class Codes: A61B 5/150916 by blocking components, e.g. piston, driving device or fluid passageway
• 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

Abstract

A lancing device including a spring-driven lancet translationally mounted within a housing. The lancet has at least one resilient finger extending outwardly therefrom and engageable within a cooperating recess formed in the housing to prevent re-use of the lancing device. A depth-adjustment knob is optionally included for contacting the housing to limit the travel of the lancet and thereby control the depth of penetration.

Claims

1. A single-use lancing device comprising:

a housing having a first end, a second end, and a chamber between said first and second ends, the first end of said housing defining a lancet opening, said housing further comprising at least one internal shoulder and a flange extending across at least a portion of the chamber;

a lancet translationally mounted within the chamber of said housing for movement between a cocked position and a lancing position, said lancet having a lancet tip for passage through the lancet opening of said housing in the lancing position, and at least one finger for engaging the internal shoulder of said housing after firing to prevent reuse;

a spring engaged between said lancet and the flange of said housing to drive said lancet from the cocked position toward the lancing position upon firing of the lancing device; and

a cocking arm connected to said lancet, said cocking arm comprising at least one fin for releasable engagement with the flange of said housing to constrain said lancet in the cocked position.

2. The single-use lancing device of claim 1, wherein said cocking arm further comprises a depth-adjustment knob for contacting the flange of said housing to limit the travel of said lancet at the lancing position.

3. The single-use lancing device of claim 1, further comprising a sterility cap detachably mounted over the lancet tip.

4. The single-use lancing device of claim 1, wherein said housing comprises first and second half-shells hingedly joined to one another.

5. The single-use lancing device of claim 1, wherein the at least one internal shoulder of said housing is formed by an opposed pair of recesses within said housing between the first end of said housing and the flange.

6. The single-use lancing device of claim 5, wherein the at least one finger of said lancet comprises a pair of fingers extending outwardly and away from the lancet tip.

7. The single-use lancing device of claim 6, wherein each of said fingers is generally curved.

8. The single-use lancing device of claim 1, wherein said spring retracts the lancet to prevent the lancet tip from extending through the lancet opening of said housing after firing the lancing device.

9. The single-use lancing device of claim 1, wherein said cocking arm comprises a pair of shafts, a first end of each shaft connected to opposed sides of said lancet, and a second end of each shaft connected to a cocking grip, each shaft comprising a fin extending outwardly therefrom for releasable engagement with the flange of said housing to constrain said lancet in the cocked position.

10. A single-use lancing device comprising a spring-driven lancet translationally mounted within a housing, the lancet comprising at least one resilient finger extending outwardly therefrom, each said at least one resilient finger engageable within a cooperating recess formed in the housing to prevent re-use of the lancing device.

11. The single-use lancing device of claim 10, further comprising a cocking arm connected to the lancet, said cocking arm comprising at least one fin for releasable engagement with a flange projecting inwardly from the housing to constrain the lancet in a cocked position.

12. The single-use lancing device of claim 11, further comprising a depth-adjustment knob for contacting the flange to limit the travel of said lancet.

13. The single-use lancing device of claim 10, further comprising means for retracting the lancet into the housing after firing.

14. The single-use lancing device of claim 10, further comprising a sterility cap detachably secured to the lancet.

15. A lancing device comprising:

a housing having a first end, a second end, and at least one side wall defining a chamber between said first and second ends;

a lancet translationally mounted within the chamber of said housing;

a spring engaged between said lancet and said housing to drive said lancet from a cocked position toward a lancing position upon firing of the lancing device;

a cocking arm connected to said lancet, said cocking arm comprising at least one fin for releasable engagement with the housing to constrain said lancet in the cocked position; and

a depth-adjustment knob for contacting the housing to limit the travel of said lancet at the lancing position.

16. The lancing device of claim 15, wherein said housing comprises a flange extending transversely from said at least one side wall, and wherein the depth-adjustment knob contacts the flange to limit the travel of the lancet at the lancing position.

17. The lancing device of claim 16, wherein said cocking arm comprises at least one shaft having a first end connected to the lancet and a second end connected to a cocking grip, the shaft comprising a fin extending outwardly therefrom for releasable engagement with the flange of said housing to constrain said lancet in the cocked position.

18. The lancing device of claim 15, wherein said lancet comprises at least one resilient finger for engagement within a cooperating recess formed in said housing to prevent reuse of said lancing device after firing.

19. The lancing device of claim 15, wherein the spring retracts at least a tip portion of the lancet into the housing after firing.

20. The lancing device of claim 15, further comprising a sterility cap detachably sucured to the lancet.