Device for promoting bodily fluid expression from a target site

• US 20070073191A1
• Filed: 09/26/2005
• Published: 03/29/2007
• 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:
  US11/236,377
• Publication Number:
  US 20070073191A1
• Time in Patent Office: Days
• US Class Current: 600/584
• 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 device for promoting the expression of bodily fluid from a target site on a user'"'"'s body includes a base and a pressure application mechanism. The pressure application mechanism is attached to the base and urges bodily fluid toward the target site. The pressure application mechanism configured for urging the bodily fluid by sequentially increasing an area of contact and applied pressure between the pressure application mechanism and the user'"'"'s body in the vicinity of the target site. Moreover, the area of contact and applied pressure sequentially increases in a direction toward the target site.

Claims

1. A device for promoting the expression of bodily fluid from a target site on a user'"'"'s body, the device comprising:

a base; and

a pressure application mechanism attached to the base for urging bodily fluid toward the target site, the pressure application mechanism configured for urging the bodily fluid by sequentially increasing an area of contact and applied pressure between the pressure application mechanism and the user'"'"'s body in the vicinity of the target site,

wherein the area of contact and applied pressure sequentially increases in a direction toward the target site.

2. The device of claim 1, wherein the pressure application mechanism for urging bodily fluid toward the target site includes a plurality of ribs with semicircular contact areas configured for providing the sequentially increasing area of contact and applied pressure.

3. The device of claim 2, wherein at least one of the semicircular contact areas is stationary.

4. The device of claim 2, wherein the applied pressure exerts a force in the range of 15N to 20N.

5. The device of claim 2, 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.

6. The device of claim 2, wherein at least one of the plurality of ribs is a biased rib.

7. The device of claim 6, wherein the biased rib is biased with at least one spring.

8. The device of claim 6, wherein the biased rib is biased with at least one elastomeric block.

9. The device 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.

10. The device of claim 9, wherein the cam is spring biased.

11. The device of claim 1 further wherein the base includes a rimmed aperture.

12. The device 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.

13. The device of claim 12, 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.