Disposable lancet for finger/heel stick

• US 5,746,761 A
• Filed: 07/03/1997
• Issued: 05/05/1998
• Est. Priority Date: 07/03/1997
• Status: Expired due to Fees

• Current Assignee: Arkadiy Turchin
• Original Assignee: Arkadiy Turchin
• Inventors: Turchin, Arkadiy
• Primary Examiner(s): Buiz, Michael
• Assistant Examiner(s): Lewis, William W.
• Application Number:
  US08/887,782
• Time in Patent Office: 306 Days
• Field of Search: 606/181-183, 606/184, 606/185, 128/770
• US Class Current: 606/181
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• CPC Class Codes: A61B 5/150435 Specific design of proximal end
• CPC Class Codes: A61B 5/150587 by friction fit
• 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 5/15144 comprising driving means, e.g. a spring, for retracting the piercing unit into the housing

Abstract

A lancet type device (20) having a movable and retractable lancet (46) is disclosed. A lancet (46) beyond the end of a lancet body (24). The device includes an actuating, a retracting and locking mechanisms that move and retract a sharp distal tip (48) linearly into and out of contact with a patient'"'"'s skin. The actuating mechanism includes an arm (26) with a blind conical hole (56) and a conical top (52) of a lancet body (24). The retracting and locking mechanism includes a blind cylindrical hole (58) of an arm (26), a cylindrical head (50) of a lancet body (24) and a spring (54). In one embodiment, a spring (54) is molded as a part of a lancet body (24). In another embodiment, a spring (68) is made as separate part from metal. Contact between a blind conical hole (56) and a conical top (52) moves a lancet body (24) in a linear direction along the axis. Contact between a cylindrical head (50) and a blind cylindrical hole (56) locks an arm (26) inside a case (22).

Claims

1. A lancet type device having a distal or patient contacting end and an opposed proximal end comprising:

an elongated lancet body having a central axis;

a lancet that is substantially encased in the lancet body, the lancet having a sharp distal tip that extends beyond the distal end of the lancet body;

an arm that sliding transverse to the axis of lancet body, the arm having opened slot on the front end, a blind conical hole, a blind cylindrical hole and a finger pad;

a case having a chamber contoured to the shape of the lancet body so that the lancet body is slidably encased in the chamber and moves in the chamber along the central axis of the lancet body, the chamber having an axis;

a case having a channel guide transversely across to the axis of lancet body, contoured to the shape of the arm so that the arm is slidably encased in the channel guide and moves in the channel guide transversely across to the axis of lancet body;

a removable cap that encloses the sharp distal tip;

an actuating mechanism that moves the sharp distal lancet tip linearly out of the case, the actuating mechanism including;

a conical top of lancet body

the blind conical hole of the arm;

a retracting and locking mechanism that moves the sharp distal lancet tip linearly into the case and locking the arm, the retracting and locking mechanism including;

a cylindrical head of the lancet body

a spring, that is molded as part of the lancet body

a blind cylindrical hole of the arm;

whereby, as the arm moves, contact between the blind conical hole of the arm and the conical top of the lancet body moves the lancet body in a linear direction along the axis of the lancet body;

whereby the lancet tip moves into and out of contact with a patient'"'"'s skin.

2. A lancet type device having a distal or patient contacting end and an opposed proximal end comprising:

an elongated lancet body having a central axis;

a lancet that is substantially encased in the lancet body, the lancet having a sharp distal tip that extends beyond the distal end of the lancet body;

an arm that sliding transverse to the axis of lancet body, the arm having opened slot on the front end, a blind conical hole, a blind cylindrical hole and a finger pad;

a case having a chamber contoured to the shape of the lancet body so that the lancet body is slidably encased in the chamber and moves in the chamber along the central axis of the lancet body, the chamber having an axis;

a case having a channel guide transversely across to the axis of lancet body, contoured to the shape of the arm so that the arm is slidably encased in the channel guide and moves in the channel guide transversely across to the axis of lancet body;

a removable cap that encloses the sharp distal tip;

an actuating mechanism that moves the sharp distal lancet tip linearly out of the case, the actuating mechanism including;

a conical top of lancet body

the blind conical hole of the arm;

a retracting and locking mechanism that moves the sharp distal lancet tip linearly into the case and locking the arm, the retracting and locking mechanism including;

a cylindrical head of the lancet body

a metal spring

a blind cylindrical hole of the arm;

whereby, as the arm moves, contact between the blind conical hole of the arm and the conical top of the lancet body moves the lancet body in a linear direction along the axis of the lancet body;

whereby the lancet tip moves into and out of contact with a patient'"'"'s skin.