SAFETY LANCET FOR PREVENTING REUSE

• US 20110144682A1
• Filed: 10/18/2010
• Published: 06/16/2011
• Est. Priority Date: 12/14/2009
• Status: Active Grant

• Current Assignee: Kwan H.O. Hong
• Original Assignee: Kwan H.O. Hong
• Inventors: HONG, Kwan Ho
• Granted Patent: US 8,343,180 B2
• 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 5/150412 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 5/150549 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 5/150916 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 5/15142 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

Abstract

A safety lancet for preventing reuse is provided, including an upper and lower case, moving block, guide, pressing plate, seating recess, and resilient spring. The upper case and a lower cases are coupled together with a space therein and a through-hole at the front to expose a lancet needle. The moving block is movable within the cases. with the lancet needle at the front. The guide is positioned behind the moving block within the cases and includes an anti-reverse ledge to selectively restrict reverse movement for reloading of the moving block. The pressing plate is pivotably mounted to the upper case and includes a stopper on which the moving block is caught, and a pressing projection for pressing the guide. The seating recess is defined in a bottom of the lower case, in which the guide descends and is seated. The resilient spring supports the rear of the moving block.

Claims

1. A safety lancet for preventing reuse, comprising:

an upper case and a lower case coupled to one another to define a space of a certain volume therein, and defining through-holes at a front end thereof to enable a lancet needle to be exposed therethrough;

a moving block provided to be movable within the cases and including the lancet needle formed at a front end thereof;

a guide disposed at a rear end of the moving block within the cases, and including an anti-reverse ledge at a front end thereof to selectively restrict reverse movement for reloading of the moving block;

a pressing plate pivotably mounted to the upper case on a pivot support that is an axis, and including a stopper projecting downward at a front end thereof on which the moving block is caught, and a pressing projection at a rear end thereof for pressing the guide;

a seating recess defined in a bottom surface of the lower case, in which the guide that is pressed by the pressing plate descends and is seated; and

a resilient spring for supporting the rear end of the moving block with a predetermined resilient force, wherein

the moving block further includes guide projections projecting from either sidewall thereof, and the cases further include guide grooves defined horizontally in inner walls thereof corresponding to the guide projections to guide the guide projections.

3. The safety lancet of claim 1, wherein the guide further includes a connecting ledge at a lower front end thereof, for implementing a connected state with the moving block.

2. A safety lancet for preventing reuse, comprising:

an upper case and a lower case coupled to one another to define a space of a certain volume therein, and defining through-holes at a front end thereof to enable a lancet needle to be exposed therethrough;

a moving block provided to be movable within the cases and including the lancet needle formed at a front end thereof;

a guide disposed at a rear end of the moving block within the cases, and including an anti-reverse ledge at a front end thereof to selectively restrict reverse movement for reloading of the moving block;

a pressing plate pivotably mounted to the upper case on a pivot support that is an axis, and including a stopper projecting downward at a front end thereof on which the moving block is caught, and a pressing projection at a rear end thereof for pressing the guide;

a seating recess defined in a bottom surface of the lower case, in which the guide that is pressed by the pressing plate descends and is seated; and

a resilient spring for supporting the rear end of the moving block with a predetermined resilient force, wherein

the guide further includes resilient wings having a predetermined resiliency projecting from either side thereof, and the seating recess of the lower case defines insert holes in sidewalls thereof corresponding to the resilient wings, for the resilient wings to be inserted therein and prevent ascending of the guide.

4. The safety lancet of claim 2, wherein the guide further includes a connecting ledge at a lower front end thereof, for implementing a connected state with the moving block.

5. A safety lancet for preventing reuse, comprising:

an upper case and a lower case coupled to one another to define a space of a certain volume therein, and defining through-holes at a front end thereof to enable a lancet needle to be exposed therethrough;

a moving block provided to be movable within the cases and including the lancet needle formed at a front end thereof;

a guide disposed at a rear end of the moving block within the cases, and including an anti-reverse ledge at a front end thereof to selectively restrict reverse movement for reloading of the moving block;

a pressing plate pivotably mounted to the upper case on a pivot support that is an axis, and including a stopper projecting downward at a front end thereof on which the moving block is caught, and a pressing projection at a rear end thereof for pressing the guide;

a seating recess defined in a bottom surface of the lower case, in which the guide that is pressed by the pressing plate descends and is seated; and

a resilient spring for supporting the rear end of the moving block with a predetermined resilient force, wherein

the seating recess of the lower case defines a positioning hole through a floor thereof, for checking a position of the guide.

6. The safety lancet of claim 5, wherein the moving block defines an inclined surface of a predetermined angle on a top surface at the front end thereof to raise the stopper during reverse movement.

7. A safety lancet for preventing reuse, comprising:

an upper case and a lower case coupled to one another to define a space of a certain volume therein, and defining through-holes at a front end thereof to enable a lancet needle to be exposed therethrough;

a moving block provided to be movable within the cases and including the lancet needle formed at a front end thereof;

a guide disposed at a rear end of the moving block within the cases, and including an anti-reverse ledge at a front end thereof to selectively restrict reverse movement for reloading of the moving block;

a pressing plate pivotably mounted to the upper case on a pivot support that is an axis, and including a stopper projecting downward at a front end thereof on which the moving block is caught, and a pressing projection at a rear end thereof for pressing the guide;

a seating recess defined in a bottom surface of the lower case, in which the guide that is pressed by the pressing plate descends and is seated; and

a resilient spring for supporting the rear end of the moving block with a predetermined resilient force, wherein

the moving block further includes a support projection projecting at the rear end thereof on which a front end of the resilient spring is inserted and supported, and the lower case includes a supporting partition of a predetermined height to provide positioning support at a rear end of the resilient spring.

8. The safety lancet of claim 7, wherein the guide further includes a recess defined in the rear end thereof to prevent interference with the supporting partition during reversal.