Single use lancet device

• US 6,958,072 B2
• Filed: 06/13/2002
• Issued: 10/25/2005
• Est. Priority Date: 11/10/2000
• Status: Expired due to Term

• Current Assignee: Steven Schraga
• Original Assignee: Steven Schraga
• Inventors: Schraga, Steven
• Primary Examiner(s): Dawson, Glenn K.
• Assistant Examiner(s): Erezo, Darwin P.
• Application Number:
  US10/171,464
• Publication Number:
  US 20030050656A1
• Time in Patent Office: 1,230 Days
• Field of Search: 606/181, 606/182, 606/184, 606/185
• US Class Current: 606/182
• CPC Class Codes: A61B 5/1411 by percutaneous method, e.g. by lancet
• 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 5/150519 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 5/150916 by blocking components, e.g. piston, driving device or fluid passageway
• CPC Class Codes: A61B 5/15111 Semi-automatically triggered, e.g. at the end of the cocking procedure, for instance by biasing the main drive spring or when reaching sufficient contact pressure, the piercing device is automatically triggered without any deliberate action by the user
• 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 5/15132 comprising tooth-shaped elements, e.g. toothed wheel or rack and pinion
• CPC Class Codes: A61B 5/15142 Devices intended for single use, i.e. disposable

Abstract

A single use lancet device having a housing, a lancet with a piercing tip movably disposed in the housing and structured to move between a cocked orientation and a piercing orientation, and a driving assembly structured to move the lancet into the piercing orientation. A retention member and an engagement hub are further provided and structured to be cooperatively engaged with one another upon the lancet being disposed in the cocked orientation so as to maintain the lancet in the cocked orientation until released by an actuation assembly. Specifically, the actuation assembly is structured to move between an actuated and an un-actuated orientation, movement into the actuated orientation releasing the retention member and the engagement hub from their cooperative engagement with one another and thereby result in movement of the lancet into the piercing orientation. The device also includes a restrictor assembly structured to substantially prevent the actuation assembly from moving out of the actuated orientation, thereby preventing re-firing of the lancet utilizing the actuation assembly.

Claims

1. A single use lancet device comprising:

a) a housing,

b) a lancet movably disposed within said housing and including a piercing tip,

c) an actuation assembly mounted on said housing and releasably and drivingly connected to said lancet,

d) said actuation assembly selectively movable to dispose said lancet at least into a cocked orientation,

e) a driving assembly disposed in driving engagement with said lancet and structured to move said lancet from said cocked orientation at least temporarily into a piercing orientation, and

f) a restriction assembly disposed and structured to restrict movement of said lancet from said piercing orientation into said cocked orientation,

g) said restriction assembly including at least one restrictor member and at least one stop member, said one restrictor member connected to said actuation assembly and movable therewith, said stop member fixedly secured to said housing and disposed in abutting relation to said one restrictor member as said lancet moves from said piercing orientation towards said cocked orientation.

2. A lancet device as recited in claim 1 wherein said driving assembly is further structured to orient said piercing tip into a retracted orientation subsequent to said lancet being disposed in said piercing orientation.

3. A lancet device as recited in claim 2 wherein said driving assembly comprises a biasing member disposed in biasing engagement with said lancet on said lancet is in said cocked orientation.

4. A lancet device as recited in claim 3 wherein said biasing member is disposed and structured to move said lancet out of said piercing orientation and dispose said piercing tip into said retracted orientation.

5. A lancet device as recited in claim 1 wherein said driving assembly is disposed and structured to force said lancet into said piercing orientation upon release of said lancet from said actuation assembly.

6. A lancet device as recited in claim 5 wherein said driving assembly is further structured to orient said piercing tip automatically into a retracted orientation subsequent to said lancet being disposed in said piercing orientation.

7. A lancet device as recited in claim 1 further comprising a positioning assembly movably and releasably interconnecting said actuation assembly and said lancet.

8. A lancet device as recited in claim 7 wherein said positioning assembly is disposed in concurrent engagement with both said actuation assembly and said lancet as said lancet is being disposed into said cocked orientation.

9. A lancet device as recited in claim 8 wherein said driving assembly and positioning assembly are cooperatively disposed and structured to force said lancet into said piercing orientation upon release of said positioning assembly from at least one of said actuation assembly or lancet.

10. A lancet device as recited in claim 7 wherein said lancet is positioned from said cocked orientation into said piercing orientation upon disposition of said positioning assembly out of concurrent engagement with said lancet and said actuation assembly.

11. A lancet device as recited in claim 7 wherein said positioning assembly comprises at least one positioning member movably and releasably interconnecting said lancet and said actuation assembly.

12. A lancet device as recited in claim 11 wherein said positioning member is disposed in concurrent engagement with both said lancet and said actuation assembly as said lancet moves into said cocked orientation and said positioning member is disconnected from at least one of said lancet and actuation member upon moving into said piercing orientation from said cocked orientation.

13. A lancet device as recited in claim 12 wherein said positioning member is movable relative to both said lancet and said actuation assembly.

14. A lancet device as recited in claim 12 wherein said positioning member is fixedly secured to said actuation assembly and disposed in movable and detachable relation to said lancet.

15. A lancet device as recited in claim 12 wherein said positioning member comprises a gear structure.

16. A lancet device as recited in claim 7 wherein said positioning assembly is movable relative to both said lancet and said actuation assembly.

17. A lancet device as recited in claim 7 wherein said positioning assembly is fixedly secured to said actuation assembly and disposed in movable and detachable relation to said lancet.

18. A lancet device as recited in claim 7 wherein said positioning assembly comprises a gear structure.

19. A lancet device as recited in claim 1 wherein said one restrictor member is secured to said lancet and movable therewith.

20. A lancet device as recited in claim 1 wherein said restriction assembly comprises a first restrictor member and a first stop member and a second restrictor member and a second stop member, said first and second restrictor members each connected to a different one of said lancet or actuation assembly and movable therewith, said first and second stop members fixedly secured to said housing and disposed in abutting relation to a corresponding one of said first or second restrictor members as said lancet moves from said piercing orientation towards said cocked orientation.

21. A single use lancet device comprising:

a) a housing,

b) a lancet movably disposed within said housing and including a piercing tip,

c) an actuation assembly movably mounted on said housing in driving relation to said lancet,

d) a positioning assembly movably and releasably interconnecting said actuation assembly and said lancet,

e) said actuation assembly selectively positionable to dispose said lancet at least into a cocked orientation,

f) a driving assembly disposed in biasing relation to said lancet and structured to position said lancet at least temporarily into a piercing orientation, and

g) said driving assembly and said positioning assembly cooperatively disposed and structured to force said lancet into said piercing orientation upon release of said positioning assembly from at least one of said actuation assembly or said lancet, and

h) said positioning assembly including at least one positioning member movably and releasably interconnecting said lancet and said actuation assembly, and disposed in concurrent engagement with both said lancet and said actuation assembly as said lancet moves into said cocked orientation and said positioning member is disconnected from at least one of said lancet and said actuation assembly upon moving into said piercing orientation from said cocked orientation.

22. A lancet device as recited in claim 21 wherein said driving assembly is disposed and structured to move said lancet out of said piercing orientation and dispose said piercing tip into said retracted orientation.

23. A lancet device as recited in claim 21 further comprising a restriction assembly disposed and structured to restrict movement of said lancet from said piercing orientation into said cocked orientation.

24. A lancet device as recited in claim 23 wherein said restriction assembly comprises at least one restrictor member and at least one stop member, said one restrictor member connected to one of said lancet or said actuation assembly and movable therewith, and said stop member fixedly secured to said housing and disposed in abutting relation to said one restrictor member as said lancet moves from said piercing orientation towards said cocked orientation.

25. A single use lancet assembly comprising:

a) a housing,

b) a lancet movably disposed within said housing and including a piercing tip,

c) an actuation assembly movably disposed in driving engagement with said lancet,

d) at least two engagement elements disposed to operatively interconnect said actuation assembly and said lancet at least upon engagement therebetween,

e) said actuation assembly structured to position said lancet at least temporarily into a cocked orientation upon actuation thereof concurrent with said engagement between said engagement elements,

f) a driving assembly drivingly engaging said lancet,

g) said actuation assembly further structured to effect dis-engagement between said engagement elements upon continued actuation thereof after said lancet is disposed in said cocked orientation, and

h) said driving assembly structured to move said lancet at least temporarily into a piercing orientation upon said disengagement between said engagement elements.