Lancet device

• US 5,908,434 A
• Filed: 02/13/1998
• Issued: 06/01/1999
• Est. Priority Date: 02/13/1998
• Status: Expired due to Term

• Current Assignee: Steven Schraga
• Original Assignee: Steven Schraga
• Inventors: Schraga, Steven
• Primary Examiner(s): Buiz, Michael
• Assistant Examiner(s): BUI, VY Q
• Application Number:
  US09/025,292
• Time in Patent Office: 473 Days
• Field of Search: 606/181, 606/182, 606/183, 606/184, 606/185, 606/186, 604/136
• US Class Current: 606/181
• 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 5/150717 manually removed
• CPC Class Codes: A61B 5/150816 by tactile feedback, e.g. vibration
• 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 5/1519 comprising driving means, e.g. a spring, for propelling the piercing unit

Abstract

A lancet device used to pierce a user'"'"'s skin and including a lancet with a body portion and a piercing tip, a primary housing, a cover assembly with a piercing opening and structured to be matingly coupled with the primary housing to define an interior chamber, and a lancet receiving assembly movably disposed within the interior chamber and structured and disposed to hold the lancet during its driven movement between a cocked orientation, a piercing orientation and a fired orientation. The lancet device further includes a retention member including a pair of elongate fingers, and an engagement hub disposed in the interior chamber and structured to be cooperatively engaged by inwardly depending protrusions on the elongate fingers when the lancet receiving assembly is in the cocked orientation so as to maintain the lancet receiving assembly in the cocked orientation until the retention member is affirmatively released from its cooperative engagement with the engagement hub by an exteriorly actuatable actuation assembly which urges the elongate fingers out of their engagement with cooperative structure on the engagement hub.

Claims

1. A lancet device comprising:

a lancet, said lancet including a body portion and a piercing tip extending from said body portion,

a primary housing,

a cover assembly structured to be matingly coupled with said primary housing so as to define an interior chamber,

said cover assembly including a piercing opening,

a lancet receiving assembly movably disposed within said interior chamber and structured and disposed to at least temporarily hold said lancet,

said lancet receiving assembly being moveable between a cocked orientation and a fired orientation, with movement of said lancet receiving assembly from said cocked orientation to said fired orientation resulting in driven movement of said lancet at least temporarily into a piercing orientation wherein said piercing tip of said lancet protrudes through said piercing opening of said cover assembly,

said lancet receiving assembly further including a retention member,

an engagement hub disposed in said interior chamber and structured to be cooperatively engaged with said retention member at least upon said lancet receiving assembly being disposed in said cocked orientation so as to maintain said lancet receiving assembly in said cocked orientation until said retention member is affirmatively released from said cooperative engagement therewith,

an actuation assembly, said actuation assembly being exteriorly actuatable and being structured and disposed to release said retention member from said cooperative engagement with said engagement hub,

said retention member including at least one generally elongate finger, said elongate finger including an inwardly depending protrusion structured to engage cooperative structure on said engagement hub when said lancet receiving assembly is disposed in said cocked orientation, and

said actuation assembly being structured to extend at least partially into said interior chamber upon actuation thereof so as to at least temporarily urge said elongate finger out of said engagement with said cooperative structure on said engagement hub.

2. A lancet device as recited in claim 1 wherein said retention member includes two of said elongate fingers disposed in opposite, confronting relation with one another.

3. A lancet device as recited in claim 1 wherein said engagement hub protrudes inwardly from a base of said primary housing and includes a generally enlarged head behind which said inwardly depending protrusion of said elongate finger is cooperatively disposed in order to retain said lancet receiving assembly in said cocked orientation.

4. A lancet device as recited in claim 3 wherein said elongate finger is generally resilient and said actuation assembly includes a wedge element structured to urge said elongate finger at least temporarily into spaced apart relation from said engagement hub, upon actuation of said actuation assembly, such that said inwardly depending protrusion of said elongate finger does not engage said enlarged head of said engagement hub and said lancet receiving assembly is able to freely move out of said cocked orientation.

5. A lancet device as recited in claim 4 further including a biasing element cooperatively disposed with said lancet receiving assembly so as to urge said lancet receiving assembly from said cocked orientation and at least temporarily into said piercing orientation upon release of said elongate finger out of said engagement with said cooperative structure on said engagement hub.

6. A lancet device as recited in claim 5 further including a retraction assembly structured to urge said lancet receiving assembly from said piercing orientation into said fired orientation so as to conceal said piercing tip of said lancet within said interior chamber.

7. A lancet device as recited in claim 6 wherein said retraction assembly includes a resilient material element protruding from said lancet receiving assembly and structured to engage said primary housing such that subsequent to said lancet receiving assembly moving into said piercing orientation, said resilient material element urges said lancet receiving assembly into said fired orientation.

8. A lancet device as recited in claim 5 further including a cocking assembly structured to extend into said primary housing and move said lancet receiving assembly into said cocked orientation.

9. A lancet device as recited in claim 8 wherein said cocking assembly extends through said base of said primary housing and includes at least one cocking element cooperatively engaged with said elongate finger of said retention member so as to urge said lancet receiving assembly which includes said elongate finger into said cocked orientation.

10. A lancet device as recited in claim 9 wherein said cocking element includes an inwardly depending abutment structured to engage an outwardly extending abutment disposed on said elongate finger upon said cocking assembly being at least partially withdrawn from said primary housing, so as to pull said outwardly extending abutment, and accordingly said lancet receiving assembly, towards said base of said primary housing and into said cocked orientation.

11. A lancet device as recited in claim 10 wherein an exterior head of said cocking assembly is normally disposed in generally adjacent relation with said base of said primary housing unless pulled from said housing in order to withdraw said cocking assembly from said primary housing and urge said lancet receiving assembly into said cocked orientation, said inwardly depending abutment of said cocking element being normally disposed in substantially spaced apart relation from said outwardly extending abutment when said cocking assembly is in said normal, generally adjacent relation to said base of said primary housing so as to avoid restricting movement of said lancet receiving assembly from said cocked orientation into said piercing orientation upon release of said retention member from said engaged relation with said engagement hub.

12. A lancet device as recited in claim 11 wherein said exterior head of said cocking assembly is disposed in generally surrounding relation to an exterior actuation head of said actuation assembly, said actuation assembly being structured and disposed to protrude said actuation head from said exterior head of said cocking assembly upon said lancet receiving assembly being disposed in said cocked orientation, and to generally conceal said actuation head at least even with a plane of said exterior head of said cocking assembly when said lancet receiving assembly is disposed in said fired orientation, so as to provide a tactile indication that said lancet receiving assembly is disposed in said cocked orientation.

13. A lancet device as recited in claim 12 wherein said retention member urges said actuation assembly towards said base of said primary housing, such that said actuation head of said actuation assembly protrudes from said exterior head of said cocking assembly, upon said retention member being moved into said cooperative engagement with said engagement hub.

14. A lancet device as recited in claim 1 wherein said primary housing includes a generally triangular configuration so as to facilitate gripping thereof and so as to prevent rolling thereof when disposed on a flat surface.

15. A lancet device as recited in claim 1 further including a retraction assembly structured to urge said lancet receiving assembly from said piercing orientation into said fired orientation so as to conceal said piercing tip of said lancet within said interior chamber.

16. A lancet device as recited in claim 15 wherein said retraction assembly includes a resilient material element protruding from said lancet receiving assembly and structured to engage said primary housing such that subsequent to said lancet receiving assembly moving into said piercing orientation, said resilient material element urges said lancet receiving assembly into said fired orientation.

17. A lancet device as recited in claim 1 further including a cocking assembly structured to extend into said primary housing and move said lancet receiving assembly into said cocked orientation.

18. A lancet device as recited in claim 17 wherein said cocking assembly extends through a base of said primary housing and includes at least one cocking element cooperatively engaged with said elongate finger of said retention member so as to urge said lancet receiving assembly which includes said elongate finger into said cocked orientation.

19. A lancet device as recited in claim 18 wherein said cocking element includes an inwardly depending abutment structured to engage an outwardly extending abutment disposed on said elongate finger upon said cocking assembly being at least partially withdrawn from said primary housing, so as to pull said outwardly extending abutment, and accordingly said lancet receiving assembly, towards said base of said primary housing and into said cocked orientation.

20. A lancet device as recited in claim 19 wherein an exterior head of said cocking assembly is normally disposed in generally adjacent relation with said base of said primary housing unless pulled from said housing in order to withdraw said cocking assembly from said primary housing and urge said lancet receiving assembly into said cocked orientation, said inwardly depending abutment of said cocking element being normally disposed in substantially spaced apart relation from said outwardly extending abutment when said cocking assembly is in said normal, generally adjacent relation to said base of said primary housing so as to avoid restricting the movement of said lancet receiving assembly from said cocked orientation into said piercing orientation upon release of said retention member from said engaged relation with said engagement hub.

21. A lancet device as recited in claim 20 wherein said exterior head of said cocking assembly is disposed in generally surrounding relation to an exterior actuation head of said actuation assembly, said actuation assembly being structured and disposed to protrude said actuation head from said exterior head of said cocking assembly upon said lancet receiving assembly being disposed in said cocked orientation, and to generally conceal said actuation head at least even with a plane of said exterior head of said cocking assembly when said lancet receiving assembly is disposed in said fired orientation, thereby providing a tactile indication that said lancet receiving assembly is disposed in said cocked orientation.

22. A lancet device as recited in claim 21 wherein said retention member urges said actuation assembly towards said base of said primary housing, such that said actuation head of said actuation assembly protrudes from said exterior head of said cocking assembly, upon said retention member being moved into said cooperative engagement with said engagement hub.

23. A lancet device comprising:

a lancet, said lancet including a body portion and a piercing tip extending from said body portion,

a primary housing,

a cover assembly structured to be matingly coupled with said primary housing so as to define an interior chamber,

said cover including a piercing opening,

a lancet receiving assembly movably disposed within said interior chamber and structured and disposed to at least temporarily hold said lancet,

said lancet receiving assembly including a cocked orientation and a fired orientation, movement of said lancet receiving assembly from said cocked orientation to said fired orientation resulting in driven movement of said lancet at least temporarily into a piercing orientation wherein said piercing tip of said lancet protrudes through said piercing opening of said cover assembly,

said lancet receiving assembly further including a retention member,

an engagement hub disposed in said interior chamber and structured to be cooperatively engaged with said retention member at least upon said lancet receiving assembly being disposed in said cocked orientation so as to maintain said lancet receiving assembly in said cocked orientation until said retention member is affirmatively released from said cooperative engagement therewith,

an actuation assembly, said actuation assembly including an exteriorly actuatable actuation head and being structured and disposed to release said retention member from said cooperative engagement with said engagement hub,

a cocking assembly structured to extend into said primary housing through a base thereof and move said lancet receiving assembly into said cocked orientation,

said cocking assembly including an exterior head which is normally disposed in generally adjacent relation with said base of said primary housing unless pulled into spaced apart relation from said housing in order to withdraw said cocking assembly from said primary housing and urge said lancet receiving assembly into said cocked orientation, and

said exterior head of said cocking assembly being disposed in generally surrounding relation to said actuation head of said actuation assembly, said actuation assembly being structured and disposed to protrude said actuation head from said exterior head of said cocking assembly upon said lancet receiving assembly being disposed in said cocked orientation, and to generally conceal said actuation head at least even with a plane of said exterior head of said cocking assembly when said lancet receiving assembly is disposed in said fired orientation, thereby providing a tactile indication that said lancet receiving assembly is disposed in said cocked orientation.