BLOOD LANCET WITH HYGIENIC TIP PROTECTION

• US 20090043325A1
• Filed: 10/17/2008
• Published: 02/12/2009
• Est. Priority Date: 03/04/2000
• Status: Active Grant

• Current Assignee: Roche Diabetes Care Inc. (Roche Holding AG)
• Original Assignee: Roche Diabetes Care Inc. (Roche Holding AG)
• Inventors: Argauer, Herbert, List, Hans, Fritz, Michael, Weiss, Thomas, Deck, Frank, Immekus, Claudio
• Granted Patent: US 9,901,296 B2
• Time in Patent Office: Days
• US Class Current: 606/181
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• 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 5/150503 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 5/150633 Protective sleeves which are axially extensible, e.g. sleeves connected to, or integrated in, the piercing or driving device; pivotable protective sleeves
• CPC Class Codes: A61B 5/15142 Devices intended for single use, i.e. disposable
• CPC Class Codes: A61B 5/15151 Each piercing element being stocked in a separate isolated compartment
• CPC Class Codes: A61B 5/15165 Piercing elements stocked in or on a strip
• CPC Class Codes: A61B 5/15171 Characterized by propelling the piercing element perpendicular to the direction of movement of the strip
• CPC Class Codes: A61B 5/15176 Stocking means comprising cap, cover, sheath or protection for aseptic stocking
• CPC Class Codes: A61B 5/15186 Devices loaded with a single lancet, i.e. a single lancet with or without a casing is loaded into a reusable drive device and then discarded after use; drive devices reloadable for multiple use

Abstract

The invention concerns lancets with a lancet needle, the tip of the lancet needle being embedded in an elastic material. Furthermore the invention concerns lancets where the tip of the lancet needle is surrounded by a hollow body which partially consists of an elastic material that can be pierced by the tip of the lancet needle during the lancing process and which reseals the tip of the lancet needle in the hollow body when it is retracted. In addition the invention concerns a lancet magazine in which the lancets are accommodated in individual chambers, each chamber having an opening through which the tip of the lancet needle can pass, which is sealed by an elastic material. Finally the invention concerns the use of an elastic material as a component of a lancet or a lancet magazine to maintain the sterility of at least the tip of a lancet needle in the unused state and to hygienically protect at least the tip of a lancet needle in the used state.

Claims

1. Lancet containing

a lancet needle with a tip and

a lancet body which completely surrounds the lancet needle at least in the area of the tip, the tip being able to move relative to the lancet body and able to protrude from the lancet body and the lancet body consisting of an elastic material at least in the area of the tip of the lancet needle, characterized in that before its use, the tip of the lancet needle is embedded in the elastic material without a hollow space remaining.

2. Lancet according to claim 1, characterized in that the elastic material is a thermoplastic elastomer.

3. Lancet according to claim 1, characterized in that the elastic material is stabilized with a stiff material.

4. Lancet set comprising at least two lancets according to claim 1 which are connected together.

5. Lancet set according to claim 4, characterized in that the lancets are connected together by the elastic material.

8. Use of an elastic material as a component of a lancet according to claim 1 to preserve the sterility of at least the tip of a lancet needle in the unused state.

6. Lancet magazine containing at least two lancets which each comprise a lancet needle with a tip and which are each accommodated in individual chambers of the lancet magazine that are independent of one another, each chamber having at least one opening for the tip of the lancet needle to emerge, the said opening of the chamber being closed by an elastic material such that the elastic material can be pierced by the tip of the lancet needle during the lancing process, characterized in that the elastic material tightly reseals after the tip of the lancet needle has been retracted into the chamber.

7. Lancet magazine according to claim 6, characterized in that the elastic material is a thermoplastic elastomer.

9. Use of an elastic material as a component of a lancet according to claim 6 to preserve the sterility of at least the tip of a lancet needle in the unused state.

10. Use according to claim 9, characterized in that the elastic material is additionally used to hygienically shield at least the tip of a lancet needle in the used state.

11. Use according to claim 9, characterized in that the elastic material is a thermoplastic elastomer.

12. Lancet containing a lancet needle with a tip and a lancet body which completely surrounds at least the tip region of the lancet needle, characterized in that the lancet body of the lancet is composed of an elastic material at least in the tip region of the lancet needle in which the tip of the lancet needle is embedded.

13. Lancet containing a lancet needle with a tip and a hollow body which surrounds at least the tip of the lancet needle, characterized in that the tip region of the lancet needle can move in the hollow body and the hollow body at least partially consists of an elastic material which can be pierced by the tip of the lancet needle during the lancing process and which optionally reseals the tip of the lancet needle in the hollow body when it is retracted.

14. Lancet as claimed in claim 13, characterized in that the elastic material is a thermoplastic elastomer.

15. Lancet as claimed in claim 13, characterized in that the elastic material is stabilized by a stiff material.

16. Set of lancets containing at least two lancets as claimed in claim 13 which are connected together.

17. Set of lancets as claimed in claim 16, characterized in that the lancets are joined together by the elastic material.

18. Lancet magazine containing at least two lancets each comprising a lancet needle with a tip which are each accommodated in individual chambers of the lancet magazine that are independent of one another, each chamber having at least one opening through which the tip of the lancet needle can pass, characterized in that the said opening of the chamber is sealed by an elastic material in such a manner that the elastic material can be pierced by the tip of the lancet needle during the lancing process and reseals after the tip of the lancet needle has been retracted into the chamber.

19. Lancet magazine as claimed in claim 18, characterized in that the elastic material is a thermoplastic elastomer.

20. Use of an elastic material as a component of a lancet or of a lancet magazine to maintain the sterility of at least the tip of a lancet needle in the unused state.

21. Use as claimed in claim 20, where the elastic material is additionally used to hygienically shield at least the tip of a lancet needle in the used state.

22. Use as claimed in claim 20, characterized in that the elastic material is a thermoplastic elastomer.