DEVICE AND METHOD FOR POSITIONING A BODY PART FOR FLUID ANALYSIS

• US 20130197335A1
• Filed: 01/17/2013
• Published: 08/01/2013
• Est. Priority Date: 05/21/2004
• Status: Active Grant

• Current Assignee: Roche Diabetes Care Inc. (Roche Holding AG)
• Original Assignee: Roche Diagnostics Operations Incorporated (Roche Holding AG)
• Inventors: Deck, Frank
• Granted Patent: US 9,226,704 B2
• Time in Patent Office: Days
• US Class Current: 600/365
• CPC Class Codes: A61B 5/1411 by percutaneous method, e.g. by lancet
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• 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 5/150412 Pointed piercing elements, e.g. needles, lancets for piercing the skin blade-like piercing elements A61B5/150442
• 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 5/150755 Blood sample preparation for further analysis, e.g. by separating blood components or by mixing
• 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 5/157 Devices characterised by integrated means for measuring characteristics of blood

Abstract

A device and a method are disclosed for positioning a body part (16) on an analytical device (14) for body fluids includes a flexible compression element (24) for pressing against the body part (16) while increasing the pressure and a rigid support part (26) to hold the compression element (24) on a housing (12) of the analytical device (14). The compression element (24) has an engaging member (34) for the body part (16) which can be pressed into the housing (12) such that a withdrawal region (56) of the body part (16) is exposed in the interior (18) of the housing (12) in order to remove liquid.

Claims

1. Device for positioning a body part, in particular a finger pad, on an analytical device for body fluids comprising a preferably circular flexible compression element for pressing against the body part while increasing the pressure and a rigid support part to hold the compression element on a housing of the preferably portable analytical device, characterized in that the compression element has an engaging member for the body part which can be pressed into the housing such that a withdrawal region of the body part is exposed in the interior of the housing opposite to a flat test field in order to remove liquid.

2. Device according to claim 1, characterized in that the engaging member can be pressed in at least up to the plane of a boundary of the support part on the housing.

3. Device according to claim 1, characterized in that stop means are provided to limit the pressing depth of the compression element.

4. Device according to claim 1, characterized in that the compression element with a circular cross-section has a free outer edge that is widened by an outwardly projecting stop bead.

5. Device according to claim 1, characterized in that the compression element has two subregions which converge in a conical manner towards the pressure axis wherein the distal subregion has a stop bead on its outside which abuts against the proximal subregion when it is pressed against the body part.

6. Device according to claim 4, characterized in that the stop bead tapers preferably in a wedge-like manner away from the free outer edge of the compression element.

11. Device according to claim 1, characterized in that the compression element in the initial position has an inner surface which tapers in a kink-free manner towards a lateral edge of the support part on the housing.

13. Device according to claim 1, characterized in that the compression element is moulded as a moulded part, preferably as an injection moulded part onto the prefabricated support part.

16. Device according to claim 1, characterized in that the compression element is composed of silicon, rubber or polyurethane.

17. Device according to claim 1, characterized in that the support part is constructed as a dimensionally stable ring washer and especially one made of metal.

18. Device according to claim 1, characterized in that the support part can be inserted into a housing receiving member in a detachable manner.

20. An analytical instrument for body fluids in particular for blood sugar determination characterized by a positioning device for a body part according to claim 1.

7-10. -10. (canceled)

12. (canceled)

14. (canceled)

15. (canceled)

19. (canceled)

21. Analytical instrument for body fluids and in particular for determining blood sugar comprising a housing and a device for positioning a body part, in particular a finger pad, comprising a preferably circular flexible compression element for pressing against the body part while increasing the pressure and a rigid support part to hold the compression element on the housing, characterized in that the compression element has an engaging member for the body part which is pressed into the housing during liquid withdrawal such that a withdrawal region of the body part is exposed in the interior of the housing opposite to a flat test field.

22. Analytical instrument according to claim 21, characterized in that a test tape is preferably arranged in the interior of the housing which has a plurality of test fields on a windable support tape.

26. Analytical instrument according to claim 21, characterized in that the lancing device has a distal pressing face to press a test field against the withdrawal region of the body part.

23-25. -25. (canceled)

27. (canceled)

28. Method for analysing body fluids in particular for determining blood sugar in which a body part, in particular a finger pad, is positioned on an analyser wherein the body part is pressed against a preferably circular flexible compression element in order to increase the internal pressure wherein the compression element has an engaging member for the body part which can be pressed into the housing and the body part penetrates into the housing when it is pressed down such that a withdrawal region of the body part is kept clear in the interior of the housing opposite to a flat test field in order to remove liquid.

29. Method according to claim 28, characterized in that body fluid on the exposed withdrawal region of the body part is applied to test fields stored on a test tape in the interior of the housing.

30. Method according to claim 28, characterized in that a lancing device is inserted into the withdrawal region in the interior of the housing whereby body fluid dammed up under the increased inner pressure emerges from the generated puncture wound.

34. Method according to claim 28, characterized in that the impression depth of the compression element is limited by stop means.

35. Method according to claim 28, characterized in that the compression element is held on the housing as a replaceable part in a removable manner by means of a rigid part of the support.

31-33. -33. (canceled)