Polygonal cross section lancet needle

• US 20030236543A1
• Filed: 06/02/2003
• Published: 12/25/2003
• Est. Priority Date: 06/25/2002
• Status: Abandoned Application

• Current Assignee: Bayer Healthcare LLC (Bayer AG)
• Original Assignee: Bayer Healthcare LLC (Bayer AG)
• Inventors: Brenneman, Allen J., Kheiri, Mohammad A.
• Application Number:
  US10/448,494
• Publication Number:
  US 20030236543A1
• Time in Patent Office: Days
• US Class Current: 606/181
• CPC Class Codes: A61B 17/32093 for skin incisions
• 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 5/150427 Specific tip design, e.g. for improved penetration characteristics
• CPC Class Codes: A61B 5/150442 Blade-like piercing elements, e.g. blades, cutters, knives, for cutting the skin
• CPC Class Codes: A61B 5/150458 Specific blade design, e.g. for improved cutting and penetration characteristics
• 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

Abstract

A lancet needle for lancing finger tips and other sites on a body to draw small samples of blood has a multisided body. The body has one end that has a portion at an angle to define a sharp edge adapted to lance a finger tip or other body site.

Claims

1. A needle for a lancet assembly, comprising:

a needle body, said needle body being of a multiside configuration including a first end and a second end, said first end including a sharp edge.

2. The needle claimed in claim 1 wherein the cross section of said needle body is square.

3. The needle claimed in claim 1 wherein the cross section of said needle body is triangular.

4. The needle claimed in claim 1 wherein a portion of said first end is at an angle between about 5°

and about 10°

to define said sharp edge.

5. The needle claimed in claim 1 wherein the cross section of said needle body is rectangular.

6. The needle claimed in claim 1 wherein said body is square, one side of said square being at an angle between about 5°

to about 10°

to define said sharp edge.

7. The needle claimed in claim 1 wherein said body is in the configuration of a triangle with a portion of said triangle being at an angle of between about 5°

and about 10°

to define said sharp edge.

8. A lancet needle, comprising:

a needle body, said needle body including a plurality of sides, said needle body including a first end and a second end, a portion of one of said sides adjacent said first end being at a first angle to define a sharp edge at said first end.

9. The lancet needle claimed in claim 8 wherein said needle body has a square cross sectional configuration.

10. The lancet needle claimed in claim 8 wherein said needle body has a triangular cross sectional configuration.

11. The lancet needle claimed in claim 8 wherein said needle body has a rectangular cross sectional configuration.

12. The lancet needle claimed in claim 8 wherein said first angle is between about 50 and about 10°

.

13. The lancet needle claimed in claim 8 including a second angle in a portion of another of said sides adjacent said first end, said first angle and said second angle defining said sharp edge.

14. A method of making a multisided lancet needle, comprising:

providing a multisided body having a first end and a second end, and forming an angle in said first end to define a sharp point.

15. The method claimed in claim 14 wherein said step of providing a multisided body comprises providing a four sided body.

16. The method claimed in claim 14 wherein said step of providing a multisided body comprises providing a three sided body.

17. The method claimed in claim 14 wherein said step of forming an angle comprises forming an angle between from about 5°

to about 10°

.

18. A method of making a multisided lancet needle, comprising:

providing a round wire having a first end,

grinding at least a portion of said first end into a multisided configuration, and

grinding said first end at an angle from about 5°

to about 10°

to form a sharp edge.

19. A needle for a lancet assembly, comprising:

a multisided needle body, said needle body including a first end and a second end, said first end including a sharp edge, said sharp edge being at an angle to the longitudinal axis of said multisided body.

20. The needle claimed in claim 19 wherein said angle is between 0°

and 15°

.