Method for promoting bodily fluid expression from a target site

• US 20070083130A1
• Filed: 09/26/2005
• Published: 04/12/2007
• Est. Priority Date: 09/26/2005
• Status: Abandoned Application

• Current Assignee: LifeScan Scotland Limited (Johnson & Johnson)
• Original Assignee: LifeScan Scotland Limited (Johnson & Johnson)
• Inventors: Alvarez-Icaza, Manuel, Gordon, Wilma, Thomson, Anne
• Application Number:
  US11/236,119
• Publication Number:
  US 20070083130A1
• Time in Patent Office: Days
• US Class Current: 600/583
• CPC Class Codes: A61B 5/1411 by percutaneous method, e.g. by lancet
• CPC Class Codes: A61B 5/14514 using means for aiding extraction of interstitial fluid, e.g. microneedles or suction
• CPC Class Codes: A61B 5/14521 using means for promoting sweat production, e.g. heating the skin measuring sweat secretion A61B5/4266
• 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 5/150358 Strips for collecting blood, e.g. absorbent optical reagent test strips G01N21/8483; chemical reagent test strips G01N33/4875, G01N33/52
• 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
• 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
• CPC Class Codes: A61B 5/157 Devices characterised by integrated means for measuring characteristics of blood
• CPC Class Codes: A61B 5/6826 Finger
• CPC Class Codes: A61B 5/6838 Clamps or clips

Abstract

A method for promoting bodily fluid expression from a target site includes urging a target site of a user'"'"'s body toward a device for promoting expression of bodily fluid from the target site. The method also includes sequentially increasing an area of contact and applied pressure between a pressure application mechanism of the device and the user'"'"'s body in the vicinity of the target site, and in a direction toward the target site, thereby urging bodily fluid toward the target site. Thereafter, the target site is lanced.

Claims

1. A method for promoting bodily fluid expression from a target site, the method comprising:

urging a target site of a user'"'"'s body toward a device for promoting expression of bodily fluid from the target site;

sequentially increasing an area of contact and applied pressure between a pressure application mechanism of the device and the user'"'"'s body in the vicinity of the target site, and in a direction toward the target site, to urge bodily fluid toward the target site; and

lancing the target site while the device promotes the expression of bodily fluid from the lanced target site.

2. The method of claim 1, wherein the pressure application mechanism includes a plurality of ribs with semicircular contact areas configured for providing the sequentially increasing area of contact and applied pressure.

3. The method of claim 2, wherein at least one of the semicircular contact areas is stationary during the sequentially increasing step.

4. The method of claim 3, wherein at least one of the plurality of ribs is a biased rib.

5. The method of claim 3, wherein the applied pressure results in a force in the range of 15N to 20N.

6. The method of claim 3, wherein the target site is a user'"'"'s fingertip and the semicircular contact areas have a contour that limits deformation of a user'"'"'s finger during use of the device.

7. The method of claim 1, wherein the pressure application mechanism for urging bodily fluid toward the target site includes:

a biased cam pivotally attached to the base; and

a stationary leverage bar offset from the biased cam by a distance whereby a portion of the user'"'"'s body can be inserted between the biased cam and the stationary leverage bar.

8. The method of claim 1, wherein the target site is on an underside of a user'"'"'s fingertip and the area of sequentially increasing area of contact and applied pressure is on the underside of the user'"'"'s finger.

9. The method of claim 9, wherein the area of contact and applied pressure sequentially increases from a position below a last knuckle of the user'"'"'s finger to half way between the last knuckle and the fingertip.