Eliciting a blood sample

• US 10,390,745 B2
• Filed: 09/21/2012
• Issued: 08/27/2019
• Est. Priority Date: 09/22/2011
• Status: Active Grant

• Current Assignee: Sanofi-Aventis Deutschland GmbH (Sanofi )
• Original Assignee: Sanofi-Aventis Deutschland GmbH (Sanofi )
• Inventors: Richter, Frank, Macarthur, Ross
• Primary Examiner(s): McCrosky, David J.
• Application Number:
  US14/345,600
• Publication Number:
  US 20140378800A1
• Time in Patent Office: 2,531 Days
• 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 5/150175 Adjustment of penetration depth
• CPC Class Codes: A61B 5/150427 Specific tip design, e.g. for improved penetration characteristics
• CPC Class Codes: A61B 5/150519 Details of construction of hub, i.e. element used to attach the single-ended needle to a piercing device or sampling device
• CPC Class Codes: A61B 5/150526 Curved or bent needles
• CPC Class Codes: A61B 5/15113 Manually triggered, i.e. the triggering requires a deliberate action by the user such as pressing a drive button
• CPC Class Codes: A61B 5/15126 Means for controlling the lancing movement, e.g. 2D- or 3D-shaped elements, tooth-shaped elements or sliding guides
• CPC Class Codes: A61B 5/15153 Multiple piercing elements stocked in a single compartment
• CPC Class Codes: A61B 5/15174 Piercing elements stocked in the form of a stack or pile
• CPC Class Codes: A61B 5/157 Devices characterised by integrated means for measuring characteristics of blood
• CPC Class Codes: G01N 33/48757 Test elements dispensed from a stack

Abstract

Within examples, an apparatus for eliciting a blood sample includes a testing member rotatably mounted on a shaft; and an aperture for positioning a body part of the user relative to the edge of the testing member, wherein an edge of the testing member is shaped such as repeatedly to exert pressure on the skin of a user when the testing member is rotated.

Claims

1. An apparatus for eliciting a blood sample, the apparatus comprising:

a test disc member releasably mounted on a rotatable shaft, the test disc member having an outer edge, the outer edge including a first portion having a generally circular outer circumference and a second cutaway portion, wherein the cutaway portion comprises a plurality of ridges configured to collect blood from a user;

an aperture; and

a lancet attached to the test disc member and protruding from the cutaway portion of the outer edge of the test disc member, the lancet and the test disc member being configured such that the lancet pierces skin of the user'"'"'s body part that is adjacent to the aperture as the test disc member is rotated in a first direction;

wherein the test disc member is configured to collect blood from the user via the plurality of ridges when rotated in a second direction that is opposite the first direction after the skin of the user'"'"'s body part is pierced; and

wherein the apparatus is configured to rotate the test disc member via rotation of the shaft in the first direction to cause the lancet to pierce the skin of the user'"'"'s body part that is adjacent to the aperture and configured to rotate the test disc member via rotation of the shaft in the second direction to collect blood from the user via the plurality of ridges.

2. The apparatus according to claim 1, further comprising a housing, wherein the aperture is formed in a wall of the housing, and wherein the shaft is mounted inside the housing.

3. The apparatus according to claim 1, wherein the plurality of ridges comprises three ridges.

4. The apparatus according to claim 1, wherein each ridge of the plurality of ridges has a partly or completely curved profile.

5. The apparatus according to claim 1, wherein a first end of a capillary is disposed on a ridge of the plurality of ridges.

6. The apparatus according to claim 5, wherein the first end of the capillary is disposed approximately at a crest of the ridge of the plurality of ridges.

7. The apparatus according to claim 5, further comprising a blood collection part supported on or within the test disc member, wherein the capillary extends through a body of the test disc member and terminates at the blood collection part.

8. The apparatus according to claim 7, wherein the blood collection part comprises an absorbent material that contains an enzyme for blood glucose determination.

9. The apparatus according to claim 7, wherein the blood collection part has a higher capillary pull force than a capillary pull force of the capillaries.

10. The apparatus according to claim 1, wherein the apparatus is configured to control the speed of rotation of the test disc member by controlling the rotation of the rotatable shaft such that the spacing between adjacent ridges of the plurality of ridges in combination with the control in the speed of the rotation of the test disc member enables control of a frequency of a periodic pressure applied to skin of the user'"'"'s body part.

11. The apparatus according to claim 10, wherein the apparatus is configured for a speed of rotation of the test disc member and a spacing between adjacent ridges resulting in a frequency of a periodic pressure applied to skin of the user'"'"'s body part that encourages venous blood to exit a puncture wound in the user'"'"'s body part or alternatively wherein the apparatus is configured for a speed of rotation of the test disc member and a spacing between adjacent ridges resulting in a frequency of a periodic pressure applied to skin of the user'"'"'s body part that encourages plasma blood to exit a puncture wound in the user'"'"'s body part.

12. The apparatus according to claim 1 wherein, prior to the rotation in the first direction, a distal end of the lancet is not co-located with the aperture.

13. The apparatus according to claim 1, wherein the test disc member further comprises at least two electrical contact points connected to a blood collection part for communication with a meter for determining a parameter of blood chemistry.

14. A method for eliciting a blood sample, the method comprising:

providing a test disc member releasably mounted on a rotatable shaft, the test disc member having an outer edge, the outer edge including a first portion having a generally circular outer circumference and a second cutaway portion, wherein the cutaway portion comprises a plurality of ridges;

providing an aperture;

providing a lancet protruding from the cutaway portion of the outer edge of the test disc member,

rotating the test disc member in a first direction so that the lancet pierces skin of a user'"'"'s body part that is adjacent to the aperture; and

subsequent to rotating the test disc member in the first direction, rotating the test disc member in a second direction that is opposite the first direction, thereby collecting blood from the user via the plurality of ridges.