Method for lancing a dermal tissue target site

• US 20050234489A1
• Filed: 01/28/2005
• 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: Allen, John
• Application Number:
  US11/045,544
• Publication Number:
  US 20050234489A1
• Time in Patent Office: Days
• US Class Current: 606/181
• 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 5/150748 Having means for aiding positioning of the piercing device at a location where the body is to be pierced means for aiding positioning of devices for bringing media into the body A61M5/427, locating blood vessels A61B5/489
• 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 has an opening therethrough for a portion of a lancet to pass through and a continuous saddle-contoured compression surface. The continuous saddle-contoured compression surface is configured for engaging a dermal tissue target site such that, when the cap contacts and is urged towards the dermal tissue target site, the continuous saddle-contoured compression surface applies substantially uniform pressure against the dermal tissue target site. The method also includes contacting the cap with the dermal tissue target site such that the continuous saddle-contoured compression surface completely engages the target site, urging the cap towards the dermal tissue such that the continuous saddle-contoured compression surface applies essentially uniform pressure against the dermal tissue, thereby creating 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;

an opening therethrough for at least a portion of a lancet to pass through; and

a continuous saddle-contoured compression surface for engaging a dermal tissue target site such that, when the cap contacts and is urged towards the dermal tissue target site, the continuous saddle-contoured compression surface applies substantially uniform pressure against the dermal tissue target site;

contacting the cap with a target site of the dermal tissue such that the continuous saddle-contoured compression surface completely engages the dermal tissue target site;

urging the cap towards the dermal tissue target site such that the continuous saddle-contoured compression surface applies essentially uniform pressure against the dermal tissue target site, thereby creating a target site bulge; and

lancing the target site bulge.

2. The method of claim 1, wherein the providing step provides a dermal tissue lancing device with a continuous saddle-countered compression surface is an elliptical continuous saddle-contoured compression surface.

3. The method of claim 2, wherein the providing step provides a dermal tissue lancing device with an elliptical continuous saddle-contoured compression surface that has a major axis and a minor axis and the ratio of the major axis to the minor axis is in the range of about 1.1 to 1.8.

4. The method of claim 2, wherein the providing step provides a dermal tissue lancing device with an elliptical continuous saddle-contoured compression surface that has a major axis and a minor axis and the major axis has a length in the range of about 10 mm to 16 mm and the minor axis has a length in the range of about 9 mm to 13 mm.

5. The method of claim 2, wherein the providing step provides a dermal tissue lancing device wherein the projection has a height in the range of 3 mm to 5 mm.

6. The method of claim 1, wherein the providing step provides a dermal tissue lancing device wherein the continuous saddle-contoured compression surface has a saddle height in the range of from about 0.2 mm to 0.8 mm.

7. The method of claim 1, wherein the providing step provides a dermal tissue lancing device with a rim that includes a lip extending into the opening.

8. The cap of claim 7, wherein the providing step provides a dermal tissue lancing device with a the lip that forms an angle alpha with a theoretical plane that is perpendicular to the opening, the angle alpha being the range of +10 degrees to −

10 degrees.