Lancet

• US 20090306696A1
• Filed: 01/31/2007
• Published: 12/10/2009
• Est. Priority Date: 02/01/2006
• Status: Abandoned Application

• Current Assignee: ARKRAY, Inc
• Original Assignee: ARKRAY, Inc
• Inventors: Doi, Shigeru
• Application Number:
  US12/223,529
• Publication Number:
  US 20090306696A1
• Time in Patent Office: Days
• US Class Current: 606/182
• CPC Class Codes: A61B 2562/0295 Strip shaped analyte sensors for apparatus classified in A61B5/145 or A61B5/157 disposable multilayered or laminated electrodes G01N27/307; details of handling chemical test elements G01N33/4875
• 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 5/150328 by aseptic fluid
• CPC Class Codes: A61B 5/150335 by radiation
• 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 5/150412 Pointed piercing elements, e.g. needles, lancets for piercing the skin blade-like piercing elements A61B5/150442
• 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 5/150572 Pierceable protectors, e.g. shields, caps, sleeves or films, e.g. for hygienic purposes
• 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 5/15117 comprising biased elements, resilient elements or a spring, e.g. a helical spring, leaf spring, or elastic strap
• CPC Class Codes: A61B 5/15142 Devices intended for single use, i.e. disposable
• CPC Class Codes: A61B 5/15144 comprising driving means, e.g. a spring, for retracting the piercing unit into the housing
• 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
• CPC Class Codes: A61B 5/1519 comprising driving means, e.g. a spring, for propelling the piercing unit
• CPC Class Codes: A61B 5/15194 fully automatically retracted, i.e. the retraction does not require a deliberate action by the user, e.g. by terminating the contact with the patient's skin

Abstract

The present invention relates to a lancet 1 including a puncture body 4 with a puncture needle 41, and a hollow member 3 having an internal space 30 for accommodating the puncture body 4. The lancet 1 further includes a sealing part 5 for sealing and accommodating the puncture needle 41 arranged in the hollow member 3. The hollow member 3 has an opening 32 for allowing the movement of the puncture needle 41 when the puncture needle 41 is moved in a puncturing direction N1. The sealing part 5 includes a seal member securely attached so as to cover the opening 32.

Claims

1. A lancet comprising a puncture body with a puncture needle, and a hollow member having an internal space for accommodating the puncture body, wherein

the hollow member is arranged with a sealing part for obtaining a sealed state for the puncture needle in the internal space.

2. The lancet according to claim 1, wherein

the hollow member includes an opening for allowing movement of the puncture needle when the puncture needle is moved in a puncturing direction;

and

the seal part includes a seal member securely attached so as to cover the opening.

3. The lancet according to claim 2, wherein the seal member is formed into a film-shape, and is securely attached to an end face of the hollow member.

4. The lancet according to claim 2, wherein the seal member has at least one part retreated in an opposite direction to the puncturing direction from an end face of the hollow member.

5. The lancet according to claim 4, wherein

the opening is defined by a flange part arranged at a position retreated in the opposite direction to the puncturing direction from the end face of the hollow member;

and

the seal member is formed into a film-shape, and is securely attached to the flange part.

6. The lancet according to claim 4, wherein the seal member is formed into a dome-shape, and is securely attached to the hollow member so that an apex is at a position retreated in the opposite direction to the puncturing direction from the end face of the hollow member.

7. The lancet according to claim 2, wherein the seal member is porous.

8. The lancet according to claim 2, wherein the hollow member and the seal member are made of same or same type of resin material.

9. The lancet according to claim 2, wherein

the puncture body is held in the hollow member while closely attaching to an inner surface of the hollow member at one part;

and

the puncture needle has a portion exposed from the puncture body sealed between a closely attached portion of the puncture body and the hollow member, and the seal member.

10. The lancet according to claim 2, wherein

the hollow member has an additional opening which opens in an opposite direction to the puncturing direction;

and

the sealing part further includes an additional seal member securely attached so as to cover the additional opening.

11. The lancet according to claim 10, wherein the hollow member is arranged with an elastic part for exerting a force in the opposite direction to the puncturing direction with respect to the puncture body when the puncture body is moved in the puncturing direction, and for preventing the puncture body from separating from the opening.

12. The lancet according to claim 1, wherein the sealing part is integrally molded to the hollow member.

13. The lancet according to claim 1, further comprising a separation preventing means for preventing the puncture body from separating from the hollow member after use.

14. The lancet according to claim 13, wherein the separation preventing means includes one or more elastic part arranged in the puncture body.

15. The lancet according to claim 14, wherein the one or more elastic part selects a state in which the elastic part is engaged to and a state in which the elastic part is not engaged to an inner surface of the hollow member.

16. The lancet according to claim 1, further comprising an analyzing tool.

17. The lancet according to claim 16, wherein

the analyzing tool includes a capillary for holding body fluid;

and

the puncture needle can pass through the capillary.

18. The lancet according to claim 16, wherein the hollow member includes a concave part, communicating to the internal space, for fixing the analyzing tool.

19. The lancet according to claim 16, wherein

the analyzing tool includes a working electrode and a counter electrode;

and

the hollow member is arranged with a pair of leads having one end contacting the working electrode or the counter electrode, and the other end being exposed from the hollow member.

20. The lancet according to claim 19, wherein the one end is formed into a plate spring-form, and presses the working electrode or the counter electrode.

21. The lancet according to claim 16, wherein

the analyzing tool includes a working electrode and a counter electrode;

and

one part of the working electrode and the counter electrode is exposed.