Disposable/single-use blade lancet device and method

• US 8,876,846 B2
• Filed: 05/13/2013
• Issued: 11/04/2014
• Est. Priority Date: 11/03/2005
• Status: Active Grant

• Current Assignee: Stat Medical Devices Incorporated
• Original Assignee: Stat Medical Devices Incorporated
• Inventors: Schraga, Steve
• Primary Examiner(s): EASTWOOD, DAVID C
• Application Number:
  US13/892,845
• Publication Number:
  US 20140005709A1
• Time in Patent Office: 540 Days
• Field of Search: 606181-182, 600/573, 600/583, 303/35
• 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 5/150465 Specific design of proximal end
• CPC Class Codes: A61B 5/150587 by friction fit
• 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 5/150664 Pivotable protective sleeves, i.e. sleeves connected to, or integrated in, the piercing or driving device, and which are pivoted for covering or uncovering the piercing element
• CPC Class Codes: A61B 5/150717 manually removed
• 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 5/15128 comprising 2D- or 3D-shaped elements, e.g. cams, curved guide rails or threads comprising tooth-shaped elements A61B5/15132
• CPC Class Codes: A61B 5/15142 Devices intended for single use, i.e. disposable
• CPC Class Codes: A61B 5/15144 comprising driving means, e.g. a spring, for retracting the piercing unit into the housing
• CPC Class Codes: Y10T 83/04 Processes

Abstract

Single-use blade lancet device includes a body having a rear end and a front end. A triggering mechanism has a blade tip opening and is mounted to the body. A blade member is movably mounted within the body and includes a front end and a rear end. The blade member is movable at least between a first retracted position, an extended position, and a second retracted position. A biasing arrangement biases the blade member from the first retracted position towards the extended position and then towards the second retracted position. A guiding arrangement guides the blade member while the blade member moves from the first retracted position towards the extended position and then towards the second retracted position. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.

Claims

1. A single-use blade lancet device, comprising:

a body comprising a rear end and a front end;

a triggering mechanism comprising a skin-engaging surface and a blade tip opening, the triggering mechanism being at least one of associated with the body and mounted to the body;

the triggering mechanism being movable into the body during triggering;

a blade member movably mounted within the body and comprising a front end and a rear end;

the blade member being movable at least between a first retracted position, an extended position, and a second retracted position;

a biasing arrangement comprising a spring arranged inside the body and spaced from the triggering mechanism and that biases the blade member from the first retracted position towards the extended position and then towards the second retracted position; and

a guiding arrangement comprising a guide which guides the blade member while the blade member moves from the first retracted position towards the extended position and then towards the second retracted position,

wherein, during movement of the blade member, the guiding arrangement ensures that the blade member both moves along a curved path and slides in a linear direction which is substantially parallel to an axis extending from the blade tip opening to the rear end of the body.

2. The device of claim 1, wherein the biasing arrangement comprises at least one extension spring.

3. The device of claim 1, wherein the biasing arrangement comprises at least one torsion spring.

4. The device of claim 1, wherein the triggering mechanism is movably mounted to the front end of the body.

5. The device of claim 1, wherein the triggering mechanism comprises a cap portion which, at least in the first retracted position, extends out from the body, and at least one aim arranged within the body.

6. The device of claim 1, wherein the body comprises a first housing part connected to a second housing part.

7. The device of claim 1, wherein the blade member comprises a body portion made of one material and a blade tip portion made of a different material.

8. The device of claim 1, wherein the guiding arrangement comprises two projections coupled to the blade member, a pivotally mounted connecting member, and two substantially parallel guiding members coupled to the body.

9. The device of claim 1, wherein the guiding arrangement comprises two spaced apart guiding projections coupled to one housing part of the body and two spaced apart guiding projections coupled to another housing part of the body.

10. The device of claim 1, wherein the guiding arrangement comprises at least two generally circular projections, a movably mounted connecting member, and at least two spaced apart generally linear guide members.

11. The device of claim 1, wherein the guiding arrangement comprises first and second projections extending from one side of the blade member, a movably mounted connecting member having one end movably connected to the first projection and another end movably connected to a portion of the body, and a slide movably coupled to the second projection and movably guided by two spaced apart members coupled to the body.

12. The device of claim 1, wherein the guiding arrangement comprises a plurality of non-movable projections, a movably mounted connecting member, guiding members coupled to the body, and a movably guided slide.

13. The device of claim 1, wherein the triggering mechanism comprises two arms which deflect away from each other to cause automatic movement of the blade member from the first retracted position to the extended position and then to the second retracted position.

14. The device of claim 1, wherein the front end of the body comprises a generally rectangular-shaped opening which receives therein a generally rectangular-shaped portion of the triggering mechanism.

15. The device of claim 1, wherein the triggering mechanism comprises at least one arm which deflects to cause automatic movement of the blade member from the first retracted position to another more retracted position, then to the extended position, and then to the second retracted position.

16. The device of claim 1, wherein the body comprises a generally rectangular-shaped body having ergonomically-shaped finger gripping portions.

17. A disposable and single-use blade lancet device, comprising:

a body comprising a rear end and a front end;

a movable cap comprising;

a portion extending into the body; and

a portion extending outside the body and having a skin engaging surface and a blade tip opening;

a blade member movably mounted within the body and comprising a blade tip and projections arranged on opposite sides of the blade member;

the blade member being movable at least between an initial retracted position, an extended position, and a final position that is different than the initial retracted position;

a spring arranged inside the body;

a movable guide arranged within the body, coupled to the blade member and having a projecting portion that extends into a space formed by two substantially parallel surfaces arranged within the body;

said guide being movable relative to the cap and the blade member,

wherein, during triggering caused by linear movement of the cap relative to the body, both the guide and the blade member move within the body.

18. The device of claim 17, wherein the blade member is a metal member covered or coated with a plastic material.

19. The device of claim 17, wherein the body comprises a generally rectangular-shaped body.

20. The device of claim 17, wherein the spring has an end in contact with the blade member.

21. The device of claim 17, wherein the spring has an end in contact with an inner surface of the body.

22. The device of claim 17, wherein the cap has two spaced-apart arms projecting from a rear end of the cap.

23. The device of claim 17, wherein the blade tip opening is a slot.

24. A disposable and single-use blade lancet device, comprising:

a body comprising a rear end and a front end;

a removable cover preventing use of the device;

a movable cap comprising;

a portion extending into the body; and

a portion extending outside the body and having a skin engaging surface and a blade tip opening;

a blade member movably mounted within the body and comprising a blade tip;

projections located on opposite sides of the blade member;

the blade member being movable at least between an initial position, a skin puncturing position, and a final position that is different than the initial position;

a spring arranged inside the body; and

a movable non-deflectable guide arranged within the body, in contact with the blade member and functioning to guide the movement of the blade member within the body; and

said guide being movable relative to the cap and the blade member,

wherein, during triggering caused by liner movement of the cap relative to the body, the guide is guided by surfaces arranged in the body and the blade member has its movement guided by the guide.

25. The device of claim 24, wherein the blade member is a metal member covered or coated with a plastic material.

26. A disposable and single-use blade lancet device, comprising:

a rectangular-shaped body;

a removable cover preventing use of the device;

a movable cap comprising;

a portion extending into the body; and

a portion extending outside the body and having a skin engaging surface and a blade tip opening;

a blade member movably mounted within the body and comprising a blade tip;

projections positioned on opposite sides of the blade member;

the blade member being movable at least between an initial position, a skin puncturing position, and a final position that is different than the initial position;

in the initial position, the blade tip is arranged on one side of an imaginary center line of the body passing through the blade tip opening;

in the final position, the blade tip is arranged on an opposite side of the imaginary center line of the body passing through the blade tip opening;

a spring arranged inside the body; and

a one-piece guide arranged within the body, in contact with the blade member and functioning to guide the movement of the blade member within the body; and

said guide being movable relative to the cap and the blade member,

wherein, during triggering caused by linear movement of the cap relative to the body, the guide is guided by parallel surfaces arranged in the body.

27. The device of claim 26, wherein the blade member is a metal member covered or coated with a plastic material.

28. A disposable and single-use blade lancet device, comprising:

a body;

a removable cover preventing use of the device;

a movable cap comprising;

a portion extending into the body; and

a portion extending outside the body and having a skin engaging surface and a blade tip opening;

a blade member movably mounted within the body and comprising a blade tip;

the blade member being movable at least between an initial position, a skin puncturing position, and a final position that is different than the initial position;

in the initial position, the blade tip is arranged on one side of an imaginary center line of the body passing through the blade tip opening;

in the final position, the blade tip is arranged on an opposite side of the imaginary center line of the body passing through the blade tip opening;

a spring arranged inside the body;

a one-piece non-deflectable guide arranged within the body and being movable relative to the body, the cap and the blade member.