Lancet wheel

• US 8,152,741 B2
• Filed: 09/23/2008
• Issued: 04/10/2012
• Est. Priority Date: 10/15/2007
• Status: Active Grant

• Current Assignee: Roche Diabetes Care Inc. (Roche Holding AG)
• Original Assignee: Roche Diagnostics Operations Incorporated (Roche Holding AG)
• Inventors: Hoenes, Joachim, List, Hans, Zimmer, Volker, Hoerauf, Christian, Kraemer, Uwe
• Primary Examiner(s): Szmal, Brian
• Application Number:
  US12/235,891
• Publication Number:
  US 20090099477A1
• Time in Patent Office: 1,295 Days
• Field of Search: 600/583, 600/584, 600/573, 606181-183
• US Class Current: 600/583
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• CPC Class Codes: A61B 5/150282 for piercing elements, e.g. blade, lancet, canula, needle
• 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 5/150419 comprising means for capillary action
• CPC Class Codes: A61B 5/150435 Specific design of proximal end
• CPC Class Codes: A61B 5/150503 Single-ended needles hollow piercing element tip design A61B5/150396, needle sets for catheters A61M25/06, needles for bringing media into the body A61M5/32
• CPC Class Codes: A61B 5/15115 Driving means for propelling the piercing element to pierce the skin, e.g. comprising mechanisms based on shape memory alloys, magnetism, solenoids, piezoelectric effect, biased elements, resilient elements, vacuum or compressed fluids
• CPC Class Codes: A61B 5/15146 Devices loaded with multiple lancets simultaneously, e.g. for serial firing without reloading, for example by use of stocking means. multiple simultaneous cutting or piercing A61B5/150977
• CPC Class Codes: A61B 5/15153 Multiple piercing elements stocked in a single compartment
• CPC Class Codes: A61B 5/15163 Characterized by propelling the piercing element in an axial direction relative to the disc
• CPC Class Codes: A61B 5/157 Devices characterised by integrated means for measuring characteristics of blood

Abstract

The invention is related to a lancet wheel (1) having a plurality of lancets (2) in a ring-shaped arrangement, the lancets (2) comprising a lancet body (4) that ends in a lancet tip (3). A lancet wheel (1) according to the invention has a carrier (5) that carries the lancets (2), whereby the lancets (2) are connected to the carrier (5) via bars (7, 7a, 7b, 7c) that allow for mobility of the lancets (2) relative to the carrier (5).

Claims

1. Lancet wheel, comprising:

a plurality of lancets in a ring-shaped arrangement, said lancets including a lancet body that ends in a lancet tip;

a carrier that carries the lancets, wherein the carrier extends within a plane, wherein the lancets are connected to the carrier via bars that permit mobility of the lancets relative to the carrier out of the plane of the carrier;

wherein the lancets lie flat within the plane of the carrier; and

wherein the bars are bendable to allow the lancets bend out of the plane of the carrier during lancing.

2. Lancet wheel according to claim 1, wherein the carrier is a frame that surrounds the lancets.

3. Lancet wheel according to claim 1, wherein the bars each extend in the longitudinal direction of the lancet they connect to the carrier.

4. Lancet wheel according to claim 1, wherein the bars extend, at least in part, along the lancet they connect to the carrier.

5. Lancet wheel according to claim 1, wherein the lancets are connected on both sides to the carrier via mutually concatenated bars.

6. Lancet wheel according to claim 5, wherein the mutually concatenated bars connecting a lancet to the carrier are arranged longitudinally next to each other.

7. Lancet wheel according to claim 5, wherein at least one of the concatenated bars extends along the lancet body beyond an end of the lancet body facing away from the lancet tip.

8. Lancet wheel according to claim 1, wherein the lancet body originates from a base, whereby the bars connect the lancets to the carrier via the base.

9. Lancet wheel according to claim 1, further comprising test fields for analysis of a body fluid sample.

10. Lancet wheel according to claim 9, wherein the test fields are carried by spring arms that are arranged between the lancets.

11. Lancet wheel, comprising:

a plurality of lancets in a ring-shaped arrangement, said lancets including a lancet body that ends in a lancet tip;

a carrier that carries the lancets, wherein the carrier extends within a plane, wherein the lancets are connected to the carrier via bars that permit mobility of the lancets relative to the carrier out of the plane of the carrier, wherein each of the bars has a kinking site where the bars are configured to be bent when the lancet is erecting; and

wherein each lancet is connected on both sides to the carrier via at least one of the bars.

12. Lancet wheel according to claim 11, wherein each of the bars are configured with a structural weakening at the kinking site to facilitate bending of the bars for erecting the lancets out of the plane of the carrier during puncturing.

13. Lancet wheel according to claim 12, wherein each of the bars have an embossment at the kinking site.

14. Lancet wheel, comprising:

a plurality of lancets in a ring-shaped arrangement, said lancets including a lancet body that ends in a lancet tip;

a carrier that carries the lancets, wherein the carrier extends within a plane, wherein the lancets are connected to the carrier via bars that permit mobility of the lancets relative to the carrier out of the plane of the carrier; and

wherein the bars are narrower than the lancet body.

15. Puncturing system, comprising:

a lancet wheel that comprises a plurality of lancets in a ring-shaped arrangement, said lancets comprising a lancet body that ends in a lancet tip, and a frame that carries the lancets, wherein the frame extends within a plane, wherein the lancets are connected to the frame via bars that allow for mobility of the lancets relative to the plane of the frame,

wherein the lancets extend within the plane of the frame at a first position,

a swivel facility for erecting the lancets of the lancet wheel for a puncture, wherein the swivel is configured to bend the bars of the lancet to a second position where the lancet is erected orthogonal to the plane of the frame, and

a puncturing drive for moving an erected lancet for a puncture.

16. The puncturing system of claim 15, further comprising:

each of the lancets including a sample reception facility in which body fluid is received; and

each of the lancets having an associated test field received on the frame, the test field being located to receive the body fluid from the sample reception facility upon further bending of the lancets after creating the puncture.

17. A lancet wheel, comprising:

a carrier having a ring shape, wherein the carrier extends within a plane;

a plurality of lancets oriented in a ring-shaped arrangement within the carrier, wherein each of the lancets has a base and a lancet tip that extends from the base;

both sides of each lancet are configured to be connected to the carrier via at least a first bar and a second bar, wherein the first bar has one end connected to the carrier, wherein the second bar has one end connected to the base of the lancet, wherein the first bar and the second bar extend in a longitudinal direction relative to the lancet tip; and

wherein the first bar and the second bar are coupled to one another to form a zigzag configuration during lancing to permit movement of the lancet in a direction perpendicular to the plane of the carrier while minimizing lateral movement of the lancet.

18. The lancet wheel of claim 17, further comprising a third bar joined between the first bar and the second bar.