PUNCTURE NEEDLE CARTRIDGE

• US 20110196409A1
• Filed: 10/09/2009
• Published: 08/11/2011
• Est. Priority Date: 10/09/2008
• Status: Active Grant

• Current Assignee: PHC Holdings Corporation
• Original Assignee: Panasonic Healthcare Company Limited (PHC Holdings Corporation)
• Inventors: Miyata, Kouji, Nagao, Akio
• Granted Patent: US 8,506,587 B2
• Time in Patent Office: Days
• US Class Current: 606/181
• 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 5/150267 Modular design or construction, i.e. subunits are assembled separately before being joined together or the device comprises interchangeable or detachable modules
• CPC Class Codes: A61B 5/150282 for piercing elements, e.g. blade, lancet, canula, needle
• 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 5/150549 Protectors removed by rotational movement, e.g. torsion or screwing
• 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 5/150717 manually removed
• CPC Class Codes: A61B 5/150916 by blocking components, e.g. piston, driving device or fluid passageway
• 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 5/1513 comprising linear sliding guides comprising tooth-shaped elements A61B5/15132
• 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

Abstract

To provide a puncture needle cartridge which can prevent a used lancet from being reused. A puncture needle cartridge 101 includes a puncture needle holder 102 configured to be cylindrical, placed on an outer circumferential surface of a lancet body 104, and provided with an opening 102a through which a puncture needle 201 is allowed to protrude, and a protective cap 103 adapted to cover and protect the opening 102a and configured to be separable from the puncture needle holder 102. The protective cap 103 includes a base 103a adapted to cover the opening 102a when the protective cap 103 is joined and a pair of raised walls 203 which protrude from the base 103a toward the puncture needle holder 102 and whose tip portions are placed facing each other. Tip portions of the raised walls 203 pinch the puncture needle holder 102 by spreading against elastic deformation when the protective cap 103 is joined to the puncture needle holder 102, and when the protective cap 103 is separated from the puncture needle holder 102, a space between the tip portions becomes smaller than outside diameter of the puncture needle holder 102 dues to elastic deformation.

Claims

1. A puncture needle cartridge comprising:

a puncture needle adapted to puncture skin;

a lancet body adapted to cover and protect part or all of a tip of the puncture needle;

a puncture needle holder configured to be cylindrical, placed on an outer circumferential surface of the lancet body so as to allow the lancet body to move in an axial direction of the puncture needle, and provided with an opening through which the puncture needle is allowed to protrude; and

a protective cap adapted to cover and protect the opening and configured to be separable from the puncture needle holder,

wherein the protective cap comprises a base adapted to cover the opening when the protective cap is joined to the puncture needle holder and a pair of raised walls which protrude from the base toward the puncture needle holder and whose tip portions are placed facing each other,

the tip portions of the raised walls pinch the puncture needle holder when the protective cap is joined to the puncture needle holder, and

after the protective cap is separated from the puncture needle holder, a space between the tip portions of the raised walls becomes smaller than an outside diameter of the puncture needle holder.

4. The puncture needle cartridge according to claim 1, wherein the tip portions are inclined toward an axis of the lancet body.

5. The puncture needle cartridge according to claim 1, wherein an inside dimension of the tip portions is smaller than an outside dimension of a tip of the puncture needle holder.

6. The puncture needle cartridge according to claim 1, wherein a groove is provided on a boundary between the raised walls and the tip portions.

7. The puncture needle cartridge according to claim 1, wherein a projection is provided on an outer circumferential part at a tip of the puncture needle holder on a side where the puncture needle holder abuts the protective cap.

8. The puncture needle cartridge according to claim 1, wherein a plurality of the raised walls and a plurality of the tip portions are provided.

9. The puncture needle cartridge according to claim 1, wherein interior angles formed by the raised walls and the respective tip portions are larger than 90 degrees and smaller than 180 degrees each.

10. The puncture needle cartridge according to claim 1, wherein a wall thickness of the tip portions is not larger than a wall thickness of the raised walls.

11. The puncture needle cartridge according to claim 1, wherein a wall thickness of the tip portions decreases toward the tip.

16. A puncture device adapted to puncture skin using a needle, comprising:

a puncture button used to puncture the skin with a needle,

wherein the puncture needle cartridge according to claim 1 is detachably attached to the puncture device, and

the puncture device punctures the skin using the attached puncture needle cartridge when the puncture button is pressed.

17. The puncture device according to claim 16, further comprising an ejection button used to dispose of the puncture needle cartridge.

2. A puncture needle cartridge comprising:

a puncture needle adapted to puncture skin;

a lancet body adapted to cover and protect part or all of a tip of the puncture needle;

a puncture needle holder configured to be cylindrical, placed on an outer circumferential surface of the lancet body so as to allow the lancet body to move in an axial direction of the puncture needle, and provided with an opening through which the puncture needle is allowed to protrude; and

a protective cap adapted to cover and protect the opening and configured to be separable from the puncture needle holder,

wherein the protective cap comprises a base adapted to cover the opening when the protective cap is joined to the puncture needle holder, a shaft protruding from the base toward the opening, and arms mounted on the shaft and adapted to abut an inner circumferential surface of the opening in the puncture needle holder by spreading in the opening, and

space between tips of the arms is larger than an inside diameter of the opening in the puncture needle holder, and is reduced by elastic deformation when the arms are housed in the opening.

3. A puncture needle cartridge comprising:

a puncture needle adapted to puncture skin;

a lancet body adapted to cover and protect part or all of a tip of the puncture needle;

a puncture needle holder configured to be cylindrical, placed on an outer circumferential surface of the lancet body so as to allow the lancet body to move in an axial direction of the puncture needle, and provided with an opening through which the puncture needle is allowed to protrude; and

a protective cap adapted to cover and protect the opening and configured to be separable from the puncture needle holder,

wherein the puncture needle holder comprises a first engaging part formed on an inner circumferential surface of the opening,

the protective cap comprises a base adapted to cover the opening when joined, a shaft protruding from the base toward the opening, and a second engaging part formed on an outer circumferential surface of the shaft and adapted to engage with the first engaging part, and

the first engaging part and the second engaging part separably engage with each other by elastic deformation in response to an action tending to separate the protective cap from the lancet body and comprise respective jagged surfaces adapted to disable engagement in response to a recapping action tending to attach the protective cap to the lancet body.

12. A puncture needle cartridge comprising:

a protective cap containing a needle for use to puncture skin and configured to cover at least a point of the needle;

a puncture needle holder adapted to engage with a puncture device body; and

a lancet body containing the needle,

wherein the protective cap comprises a raised wall and a boss formed in an end portion of the raised wall, and

the boss engages with an end portion of the puncture needle holder in response to an action tending to put back the protective cap and thereby prevents recapping.

13. The puncture needle cartridge according to claim 12, wherein the puncture needle holder is provided with a through-hole to allow passage of the boss.

14. The puncture needle cartridge according to claim 13, wherein a plurality of the raised walls, a plurality of the tip portions, and a plurality of the through-holes are provided.

15. The puncture needle cartridge according to claim 12, wherein a tear-off portion is provided to allow the protective cap and the boss to be separated from the lancet body.