Cap for lancing device with adjustable mode of operation

• US 8,123,772 B2
• Filed: 08/14/2008
• Issued: 02/28/2012
• Est. Priority Date: 08/14/2008
• Status: Expired due to Fees

• Current Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories Incorporated)
• Original Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories Incorporated)
• Inventors: Curry, Samuel Mason, Wyler, Jonathan M.
• Primary Examiner(s): Severson, Ryan
• Assistant Examiner(s): MILES, JONATHAN WADE
• Application Number:
  US12/191,737
• Publication Number:
  US 20100042128A1
• Time in Patent Office: 1,293 Days
• Field of Search: 606/181, 606/182, 606/183, 606/172, 600/566, 600/567, 600/583, 604136-139
• US Class Current: 606/181
• 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 5/150503 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 5/150824 by visual feedback
• 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 5/15115 Driving means for propelling the piercing element to pierce the skin, e.g. comprising mechanisms based on shape memory alloys, magnetism, solenoids, piezoelectric effect, biased elements, resilient elements, vacuum or compressed fluids
• CPC Class Codes: A61B 5/15186 Devices loaded with a single lancet, i.e. a single lancet with or without a casing is loaded into a reusable drive device and then discarded after use; drive devices reloadable for multiple use

Abstract

Caps and cap assemblies for lancing devices with adjustable modes of use are disclosed herein. In accordance with some embodiments of the invention, an adjustable cap assembly for a lancing device having a housing is disclosed. The assembly comprises at least one cap comprising a cap body with a skin-engaging end that defines a piercing aperture, an end opposite the skin-engaging end configured to removably engage an end of the housing and a lancet receiver within the cap body and configured to receive a lancet. The at least one cap is configured to adjust a penetration depth of the lancet with axial movement of the cap relative to the housing and to adjust an effective size of the piercing aperture with the lancet receiver.

Claims

1. An adjustable cap assembly for a lancing device having a housing, the assembly comprising:

a cap comprising;

a cap body with a skin-engaging end, an opposing end of the skin-engaging end and an outer wall extending therebetween, the skin-engaging end defining an opening;

a distal member having a forward end directly attached to the opposing end of the cap body, a rearward end opposite the forward end configured to removably engage an end of the housing, and an outer wall extending therebetween such that the outer wall of the cap body, the outer wall of the distal member and the housing are axially aligned to define an interior of the lancing device, wherein the cap body is configured to move axially to adjust a penetration depth of the lancet relative to the distal member and the housing;

a lancet receiver within the cap configured to receive a lancet, and movable between a forward position and a rearward position; and

a piercing aperture through which a tip of the lancet extends during lancing, wherein the piercing aperture is defined by the lancet receiver when the lancet receiver is in the forward position and defined by only the opening when the lancet receiver is in the rearward position;

wherein the lancet receiver is configured with at least one protrusion extending through a corresponding opening in the distal member of the cap, wherein movement of the at least one protrusion moves the lancet receiver between the forward position in which an end of the lancet receiver is interposed in the opening, thereby effectively reducing the size of the opening, and a rearward position in which the end of the lancet receiver is distanced from the skin-engaging end of the cap body.

2. The adjustable cap assembly of claim 1, wherein the lancet receiver in the rearward position is sufficiently distanced from the opening to permit skin to pucker through the opening during lancing.

3. The adjustable cap assembly of claim 1, wherein the opposing end of the cap body is configured to threadably attach to the distal member such that the cap body is configured to rotatably adjust the penetration depth of the lancet.

4. The adjustable cap assembly of claim 1, wherein the lancet receiver moves between the forward position and rearward position while the lancet remains stationary relative to the housing.

5. The adjustable cap assembly of claim 1, wherein the lancet receiver is sized to permit insertion of the lancet therethrough while sufficiently narrow to prevent puckering of skin.

6. The adjustable cap assembly of claim 5, wherein a diameter of the lancet receiver ranges from three millimeters or greater to less than six millimeters.

7. The adjustable cap assembly of claim 1, wherein the lancet is configured to engage a lancet firing mechanism within the housing when the lancet is received by the lancet receiver, the lancet configured in fixed relation to the housing when the lancet engages the lancet firing mechanism.

8. The adjustable cap assembly of claim 1, wherein the at least one protrusion comprises two arms extending through opposite openings in the cap body, the arms configured to release the lancet receiver for movement when squeezed and prevent movement of the lancet receiver when released, wherein the lancet does not move with the lancet receiver.