Disposable/single-use blade lancet device and method

• US 7,704,265 B2
• Filed: 11/03/2005
• Issued: 04/27/2010
• 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): Peterson; Kenneth E.
• Assistant Examiner(s): MICHALSKI, SEAN M
• Application Number:
  US11/265,151
• Publication Number:
  US 20070095178A1
• Time in Patent Office: 1,636 Days
• Field of Search: 606/180, 606/181, 606/187, 606/182, 606/22, 606/110, 606/117, 606207-211, 831/30, 600/583, 600/573, 301/54, 301/55, 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;

a triggering mechanism;

a pivotally mounted connecting member comprising;

a projection which extends into an opening of a mounting projection arranged within the body;

a blade member movably mounted within the body and comprising;

a front end having a blade tip and being arranged on the blade member;

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

the connecting member being pivotally connected to the blade member via a first projection and an opening;

a second projection arranged in the body and moving with the blade member; and

a torsion spring mounted to the mounting projection and being configured to move the connecting member during a triggering of the device, whereby the blade member is caused to move from the first retracted position towards the extended position and then towards the second retracted position,

wherein, when the single-use blade lancet device is triggered, the first projection moves along a curved path, the second projection moves along a linear path, and the blade tip experiences pivotal movement about an axis of the second projection.

2. The device of claim 1, further comprising a removable device for preventing triggering of the device.

3. The device of claim 1, wherein the body comprises a two-piece body.

4. A method of using the device of claim 1, the method comprising:

removing a removable safety device or cap from the body; and

triggering the device to cause movement of the blade member.

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

a two-piece body;

a triggering mechanism;

a removable device for preventing triggering of the device;

a pivotally mounted connecting member;

a blade member movably mounted within the body and comprising;

a front end having a blade tip and being arranged on the blade member;

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

the connecting member being pivotally connected to the blade member via a first projection and an opening;

the connecting member being pivotally connected to a mounting projection arranged within the body via another projection and another opening;

a second projection arranged in the body and moving with the blade member; and

a torsion spring mounted to the mounting projection and being configured to move the connecting member during a triggering of the device, whereby the blade member is caused to move from the first retracted position towards the extended position and then towards the second retracted position,

wherein, when the single-use blade lancet device is triggered, the first projection moves along a curved oath, the second projection moves and is guided linearly, and the blade tip experiences pivotal movement about an axis of the second projection.

6. A method of using the device of claim 5, the method comprising:

removing a removable safety device or cap from the body; and

triggering the device to cause movement of the blade member.

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

a two-piece body;

a triggering mechanism;

a connecting member comprising;

a projection which extends into an opening of a mounting projection;

a blade member comprising;

a front end having a blade tip and being arranged on the blade member;

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

the connecting member being pivotally connected to the blade member via a first projection and an opening;

a second projection arranged in the body and moving with the blade member; and

a torsion spring mounted to the mounting projection and being configured to move the connecting member during a triggering of the device, whereby the blade member is caused to move from the first retracted position towards the extended position and then towards the second retracted position,

wherein, when the single-use blade lancet device is triggered, the first projection moves along a curved oath, the second projection is guided along a linear oath, and the blade tip experiences pivotal movement about an axis of the second projection.

8. A method of using the device of claim 7, the method comprising:

removing a removable safety device or cap from the body; and

triggering the device to cause movement of the blade member.