LANCET PRICKING DEVICE

• US 20120095488A1
• Filed: 10/12/2011
• Published: 04/19/2012
• Est. Priority Date: 10/15/2010
• Status: Abandoned Application

• Current Assignee: Asahi Polyslider Company, Limited (Izumi-Cosmo Co., Ltd.), Izumi-Cosmo Co., Ltd.
• Original Assignee: Asahi Polyslider Company, Limited (Izumi-Cosmo Co., Ltd.), Izumi-Cosmo Co., Ltd.
• Inventors: SAEKI, Hideaki, Imori, Hirokazu, Abe, Teruyuki
• Application Number:
  US13/271,642
• Publication Number:
  US 20120095488A1
• 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 5/15019 Depth adjustment mechanism using movable stops located inside the piercing device housing and limiting the travel of the drive mechanism mechanisms using distal end caps A61B5/150183, mechanisms at the piercing element carrier proximal end A61B5/150198
• 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 5/15029 for driving devices, i.e. means for driving 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 5/150618 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 5/150725 removal procedure linked to further actions, e.g. cocking of the piercing device, which indicate that the piercing device is used or tempered
• 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 5/1513 comprising linear sliding guides comprising tooth-shaped elements A61B5/15132
• CPC Class Codes: A61B 5/15144 comprising driving means, e.g. a spring, for retracting the piercing unit into the housing
• CPC Class Codes: A61B 5/1519 comprising driving means, e.g. a spring, for propelling the piercing unit
• CPC Class Codes: A61B 5/15192 comprising driving means, e.g. a spring, for retracting the lancet unit into the driving device housing

Abstract

There is provided a lancet pricking device which is prevented from being re-used, and also the pricking pathway of the needle thereof is improved. The lancet pricking device comprising a lancet equipped with a pricking needle and a trigger for launching the pricking needle. The trigger comprises a first trigger part and a second trigger part disposed such as to cover the first trigger part. The lancet is in engagement with the first trigger part before the pricking needle is launched. When the second trigger part is pushed from the outside for the launching of the pricking needle, the displacement of the first trigger part is caused by the second trigger part, and thereby ceasing the engagement between the lancet and the first trigger part to launch the pricking needle.

Claims

1. A lancet pricking device comprising a lancet equipped with a pricking needle, and a trigger for launching the pricking needle;

wherein the trigger comprises a first trigger part and a second trigger part disposed such as to cover the first trigger part;

the lancet is in engagement with the first trigger part before the pricking needle is launched; and

when the second trigger part is pushed for the launching of the pricking needle, the first trigger part is displaced by the second trigger part, and thereby ceasing the engagement of the lancet with the first trigger part to launch the pricking needle.

2. The lancet pricking device according to claim 1, wherein, a front end and a rear end of the first trigger part move in the reverse direction to each other in the displacement of the first trigger part.

3. The lancet pricking device according to claim 1, further comprising a lancet case for housing the lancet, both of the first trigger part and the second trigger part are integrally formed with the lancet case.

4. The lancet pricking device according to claim 1, wherein each of the first and second trigger parts has an elongated shape;

and

the elongated first and second trigger parts are arranged to be superimposed over each other.

5. The lancet pricking device according to claim 4, wherein the first trigger part has a pivot point at an inner side thereof, such that both of a front end and a rear end of the first trigger part serve as free ends;

and

wherein the second trigger part has a rear end thereof serving as a fixed end and a front end thereof serving as a free end.

6. The lancet pricking device according to claim 4, wherein, in the displacement of the first trigger part, the front end of the first trigger part is pressed inwardly due to contact of the first trigger part with the second trigger part, such that the front end of the first trigger part moves inwardly while the rear end of the first trigger part moves outwardly.

7. The lancet pricking device according to claim 6, wherein the first trigger part has, at its rear end, an engagement part “

a”

for securing the trigger, whereas the second trigger part has, at its inner side, an engaged part “

a”

for securing the trigger; and

wherein, upon the displacement of the first trigger part, the engagement part “

a”

of the first trigger part engages with the engaged part “

a”

of the second trigger part, and thereafter the first trigger part cannot be returned to its original state of the pre-displacement thereof.

8. The lancet pricking device according to claim 6, further comprising a trigger support connected to the first trigger part;

wherein the first trigger part has, at its front end, an engagement part “

b”

for securing the trigger, and the trigger support comprises an engaged part “

b”

for securing the trigger; and

wherein, upon the displacement of the first trigger part, the engagement part “

b”

of the first trigger part engages with the engaged part “

b”

of the trigger support, and thereafter the first trigger part cannot be returned to its original state of the pre-displacement thereof.

9. The lancet pricking device according to claim 7, wherein, due to the effect that the first trigger part cannot be returned to its original state of the pre-displacement thereof, the lancet cannot any longer engage with the first trigger part so that the device cannot any longer restore its original state after the launching of the pricking needle.

10. The lancet pricking device according to claim 8, wherein the trigger support is integrally formed with the lancet case.

11. The lancet pricking device according to claim 8, wherein a lancet cap for covering the pricking needle is provided with a protrusion;

and

wherein, while the pricking needle is covered with the lancet cap, the protrusion of the lancet cap is positioned directly under the second trigger part such as to be able to abut against the second trigger part, and thereby the displacement of the first trigger part is prevented even if the second trigger part is pushed from the outside.

12. The lancet pricking device according to claim 8, wherein a lancet cap for covering the pricking needle is provided with a protrusion;

wherein, while the pricking needle is covered with the lancet cap, the protrusion of the lancet cap is positioned directly under the second trigger part such as to be able to abut against the second trigger part, and thereby the displacement of the first trigger part is prevented even if the second trigger part is pressed from the outside; and

wherein the protrusion of the lancet cap is positioned between the trigger support and the front end of the second trigger part.

13. The lancet pricking device according to claim 11, wherein, after the lancet cap is removed from the pricking needle, the second trigger part can be pushed inwardly by pressing it from the outside, and thereby causing the displacement of the first trigger part.

14. A lancet pricking device comprising a lancet, a launching spring and a lancet case that houses the lancet and the spring, wherein

the lancet comprises a lancet body, a lancet cap and a pricking needle in which the pricking needle is situated in both of the lancet body and the lancet cap;

a trigger integrally provided with the lancet case comprises a first trigger part and a second trigger part positioned such as to cover the first trigger part;

wherein the spring is attached to the lancet body, and the lancet body is in engagement with the first trigger part such that the spring is kept compressed before the pricking needle is launched; and

wherein, after the lancet cap is removed, the second trigger part can be pushed inwardly by pressing it from the outside to displace the first trigger part, and thereby ceasing the engagement of the lancet body with the first trigger part.

15. The lancet pricking device according to claim 14, further comprising an exterior component that encloses at least a part of the lancet case.

16. The lancet pricking device according to claim 14, wherein the launching spring is attached to a spring-attachment portion provided at a rear-sided inner wall of the lancet case;

and

wherein the spring-attachment portion has a bent form of an elongated part with a free end and a fixed end.

17. A lancet pricking device comprising a lancet case that houses the lancet:

wherein a launching spring is attached to a spring-attachment portion provided at a rear-sided inner wall of the lancet case; and

the spring-attachment portion has a bent form of an elongated part with a free end and a fixed end.