Method for lancing a dermal tissue target site employing a dermal tissue lancing device with a tiltable cap

• US 20050234491A1
• Filed: 02/25/2005
• Published: 10/20/2005
• Est. Priority Date: 04/16/2004
• Status: Abandoned Application

• Current Assignee: Lifescan Incorporated (Duv Holding Corporation)
• Original Assignee: Lifescan Incorporated (Duv Holding Corporation)
• Inventors: Rockow, Steven G., Allen, John J.
• Application Number:
  US11/066,937
• Publication Number:
  US 20050234491A1
• Time in Patent Office: Days
• US Class Current: 606/181
• CPC Class Codes: A61B 17/17 Guides or aligning means for drills , mills, pins or wires
• CPC Class Codes: A61B 17/32093 for skin incisions
• CPC Class Codes: A61B 2017/320052 Guides for cutting instruments by marking A61B2090/395
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• CPC Class Codes: A61B 5/150068 by tissue compression, e.g. with specially designed surface of device contacting the skin area to be pierced
• 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 5/151 Devices specially adapted for taking samples of capillary blood, e.g. by lancets , needles or blades

Abstract

A method for lancing a dermal tissue target site includes providing a dermal tissue lancing device with a housing, a lancet that is moveable with respect to the housing, and a cap. The cap includes a cap body with an opening therethrough for the lancet to pass through, a proximal end, and a distal end. The cap also includes an attachment mechanism for tiltably attaching the cap body to the dermal tissue lancing device. The attachment mechanism enables the cap body to be free to tilt relative to the housing of the dermal tissue lancing device when the distal end of the cap body is urged against a dermal tissue target site. The method also includes contacting and engaging the distal end of the cap body with a dermal tissue target site such that the cap body tilts, urging the cap body towards the dermal tissue target site such that the cap body applies essentially uniform pressure against the dermal tissue target site to create a target site bulge, and lancing the target site bulge.

Claims

1. A method for lancing a dermal tissue target site, the method comprising:

providing a dermal tissue lancing device, the dermal tissue lancing device including a housing, a lancet that is moveable with respect to the housing, and a cap, the cap having;

a cap body with an opening therethrough for at least a portion of a lancet to pass through;

the cap body having;

a proximal end; and

a distal end

an attachment mechanism for tiltably attaching the cap body to the dermal tissue lancing device, whereby the cap body is free to tilt relative to the housing of the dermal tissue lancing device when the distal end of the cap body is urged against a dermal tissue target site.

contacting the distal end of the cap body with a dermal tissue target site such that the distal end engages the dermal tissue target site and the cap body tilts relative to the housing of the dermal tissue lancing device;

urging the cap body towards the dermal tissue target site such that the cap body applies essentially uniform pressure against the dermal tissue target site, thereby creating a target site bulge; and

lancing the target site bulge with the dermal tissue lancing device.

2. The method of claim 1, wherein the urging step includes urging the cap toward the dermal tissue target site such that the target site bulge contacts a skin probe of the dermal tissue lancing device.

3. The method of claim 1, wherein the contacting step is such that the cap body tilts within a range between zero degrees and twenty-five degrees relative to the housing.

4. The method of claim 1, wherein the cap body includes a saddle-contoured compression surface.

5. The method of claim 1, wherein the cap body includes a cap member and a retainer and the attachment mechanism attaches the retainer to the housing of the dermal tissue lancing device.

6. The method of claim 1, wherein the attachment mechanism includes a compliant member.

7. The method of claim 1, wherein the attachment mechanism includes threaded pins and concentrically arranged springs configured to attach the cap body to the dermal tissue lancing device.

8. The method of claim 7, wherein the cap body is free to tilt relative to the housing of the dermal tissue lancing device due to clearance between the threaded pins and the cap body.

9. The method of claim 7, wherein the cumulative spring constant of the concentrically arranged springs is in the range of 0.05 to 0.15 kg/mm.

10. The method of claim 7, wherein each of the springs have a force in the range of 0.5 kg-f to 1.3 kg-f.

11. The method of claim 1, wherein the attachment mechanism is configured such that the cap body is free to tilt to a within a predetermined angle range relative to the housing of the dermal tissue lancing device.