Single use lancet assembly

• US 8,353,924 B2
• Filed: 10/11/2011
• Issued: 01/15/2013
• Est. Priority Date: 11/02/1999
• Status: Expired due to Fees

• Current Assignee: Stat Medical Devices Incorporated
• Original Assignee: Stat Medical Devices Incorporated
• Inventors: Schraga, Steven
• Primary Examiner(s): HOLWERDA, KATHLEEN SONNETT
• Application Number:
  US13/270,525
• Publication Number:
  US 20120083817A1
• Time in Patent Office: 462 Days
• Field of Search: 606181-183, 606/167, 606/170, 600/583
• US Class Current: 606/182
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• CPC Class Codes: A61B 5/150183 Depth adjustment mechanism using end caps mounted at the distal end of the sampling device, i.e. the end-caps are adjustably positioned relative to the piercing device housing for example by rotating or screwing
• 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 5/150564 Protectors removed by pulling or pushing
• 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 5/15144 comprising driving means, e.g. a spring, for retracting the piercing unit into the housing

Abstract

A single use lancet device having a housing, with an open interior and an access opening defined therein, a lancet, with a body and a piercing tip, and disposed in the open interior of the housing so as to move between a cocked orientation and a piercing orientation, a driving assembly structured to move the lancet into the piercing orientation, and a restrictor assembly having a shoulder element and a restrictor panel operatively associated with the lancet and the housing and structured to pass over the restrictor panel upon the lancet moving from its cocked orientation to its piercing orientation, and to abut the restrictor panel upon attempted movement of the lancet back into its cocked orientation after movement into the piercing orientation, thereby preventing the lancet from moving back into the cocked orientation and preventing re-use of a contaminated piercing tip.

Claims

1. A single use lancet device comprising:

a housing;

a lancet having a piercing tip and at least partially enclosed by said housing;

said lancet moveable relative to said housing at least between a cocked orientation and a piercing orientation;

a biasing element structured to bias said lancet at least temporarily into said piercing orientation;

an actuator structured to cause said biasing element to bias said lancet at least temporarily into said piercing orientation upon actuation by a user;

a restrictor, at least part of said restrictor being independent of said biasing element and said lancet, and when engaged, said restrictor being structured to prevent said lancet from moving back into said cocked orientation, after movement of said lancet into said piercing orientation, as a result of an implement contacting and pushing merely said lancet;

said restrictor comprising an abutment structure including a biased finger having a shoulder element and a restrictor panel including a protruding element;

said protruding element including a sloped configuration which downwardly slopes away from said piercing tip of said lancet so as to facilitate passage thereof past said biased finger upon said lancet moving to said piercing orientation;

said restrictor panel and said shoulder element structured to pass one another upon said lancet moving from said cocked orientation to said piercing orientation and to abut one another upon attempted movement of said lancet into said cocked orientation after movement into said piercing orientation; and

at least one of said shoulder element and said restrictor panel structured to retract out of a normal unretracted orientation during passage past one another and to expand back to said normal unretracted orientation after passage past one another, so as to facilitate passage of said restrictor panel and said shoulder element past one another in a first direction corresponding to movement of said lancet from said cocked orientation to said piercing orientation and to block movement of said restrictor panel in a second direction, generally opposite to the first direction, subsequent to said passage past one another in the first direction.

2. A single use lancet as recited in claim 1 wherein said biasing element comprises a spring.

3. A single use lancet as recited in claim 1 wherein said actuator comprises a button structured to protrude from said housing when said lancet is disposed in said cocked orientation.

4. A single use lancet as recited in claim 1 further comprising a protective cover structured to at least partially and removably cover said piercing tip of said lancet at least prior to movement of said lancet into said cocked orientation.