Lancet wheel and method for producing a lancet wheel

• US 9,066,689 B2
• Filed: 09/28/2010
• Issued: 06/30/2015
• Est. Priority Date: 05/03/2008
• Status: Active Grant

• Current Assignee: Roche Diabetes Care Inc. (Roche Holding AG)
• Original Assignee: Roche Diagnostics Operations Incorporated (Roche Holding AG)
• Inventors: Keil, Michael
• Primary Examiner(s): EASTWOOD, DAVID C
• Application Number:
  US12/891,844
• Publication Number:
  US 20110015661A1
• Time in Patent Office: 1,736 Days
• Field of Search: 606181-183, 600/573, 600/583
• US Class Current: 1/1
• CPC Class Codes: A61B 5/1411 by percutaneous method, e.g. by lancet
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• CPC Class Codes: A61B 5/150259 Improved gripping, e.g. with high friction pattern or projections on the housing surface or an ergonometric shape
• CPC Class Codes: A61B 5/150282 for piercing elements, e.g. blade, lancet, canula, needle
• 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 5/150572 Pierceable protectors, e.g. shields, caps, sleeves or films, e.g. for hygienic purposes
• CPC Class Codes: A61B 5/150618 Integrally moulded protectors, e.g. protectors simultaneously moulded together with a further component, e.g. a hub, of the piercing element
• CPC Class Codes: A61B 5/15117 comprising biased elements, resilient elements or a spring, e.g. a helical spring, leaf spring, or elastic strap
• CPC Class Codes: A61B 5/15128 comprising 2D- or 3D-shaped elements, e.g. cams, curved guide rails or threads comprising tooth-shaped elements A61B5/15132
• 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: Y10T 29/49986 Subsequent to metal working

Abstract

The invention relates to a lancet wheel comprising multiple annularly positioned lancets (3), which have a lancet body (3b) that is made of metal and ends in a lancet tip (3a), and a carrier (5), to which the lancets (3) are connected via radially running webs (6), which allow raising of the lancets (3) into the usage position. According to the invention, it is provided that the lancets (3) are radially aligned, and the webs (6) have a plastic body, which predefine an intended bending point, around which the webs (6) are bent to raise the lancets (3). Furthermore, the invention relates to a method for producing a lancet wheel.

Claims

1. A lancet wheel comprising:

multiple annularly positioned lancets, which have a lancet body that is made of metal and ends in a lancet tip;

a carrier, to which the lancets are connected via radially running webs, which allow raising of the lancets into a usage position;

characterized in that the lancets are radially aligned and the webs have a plastic body, which predefines an intended bending point, around which the webs are bent to raise the lancets;

wherein the lancet tip extends transverse to the lancet wheel when the lancet is bent at the bending point to the usage position, and

wherein the lancet tip extends radially away from the carrier within a plane of the carrier prior to being bent to the usage position.

2. The lancet wheel according to claim 1, characterized in that the intended bending point is implemented as a notch in the plastic body.

3. The lancet wheel according to claim 1, characterized in that a metal web originating from the lancet body is embedded in the plastic body.

4. The lancet wheel according to claim 3, characterized in that the metal web extends through the intended bending point.

5. The lancet wheel according to claim 4, characterized in that the plastic body is wider at the intended bending point on the metal web.

6. The lancet wheel according to claim 3, characterized in that the carrier has a metal disk, to which the metal webs originating from the lancets lead.

7. The lancet wheel according to claim 1, characterized in that the carrier has a plastic body, which merges into the plastic bodies of the webs.

8. The lancet wheel according to claim 1, characterized in that the carrier has a ring, which encloses the lancets.

9. The lancet wheel according to claim 1, characterized in that the webs are elastically bendable around the intended bending point, so that a raised lancet passes into a flat location from the usage position without external force action.

10. The lancet wheel according to claim 1, characterized in that the carrier has a stop on one side of the lancet wheel, which only permits raising of the lancets in one direction.

11. The lancet wheel according to claim 5, wherein the plastic body is at least twice as wide at the intended bending point on the metal web.

12. The lancet wheel according to claim 5, wherein the plastic body is at least three times as wide at the intended bending point on the metal web.

13. A new lancet wheel comprising:

multiple annularly positioned lancets, which have a lancet body that is made of metal and ends in a lancet tip;

a carrier, to which the lancets are connected via radially running webs, which allow raising of the lancets from a starting position into a usage position;

wherein the lancets are radially aligned and the webs have a plastic body, which predifines an intended bending point, around which the webs are bent to raise the lancets;

wherein the lancet tip extends radially within a plane of the carrier when at the starting position; and

wherein the lancet tip extends out of the plane of the carrier when at the usage position.

14. A lancet wheel, comprising:

a carrier defining a plane;

a plurality of lancets having a lancet body that ends at a lancet tip, the lancet body being made of metal;

a plurality of webs connecting the lancets to the carrier, the webs running in a radial direction relative to the carrier, the webs being aligned in the radial direction with the lancets, the webs having a plastic body made plastic, the plastic body having a bending point;

wherein the webs are configured to bend at the bending point to move the lancet tip between a flat configuration and a usage position;

wherein the lancet tip at the flat configuration extends in the radial direction within the plane of the carrier; and

wherein the lancet tip at the usage position is raised out of the plane of the carrier.

15. The lancet wheel of claim 14, wherein the bending point is bent at right angles to usage point.

16. The lancet wheel of claim 14, wherein the bending point includes a notch defined in the plastic body.