PIERCING INSTRUMENT AND PIERCING NEEDLE CARTRIDGE
First Claim
1. A puncture needle cartridge comprising:
- a lancet that comprises a lancet body that has a puncture needle at one end and a grip part to be held by a puncture device body at the other end, a protection cap that protects the puncture needle, and a connecting part that connects the lancet body and the protection cap separably; and
a puncture needle holder that holds the lancet movably and is attached to the puncture device body, wherein;
a first convex part or concave part is formed in the protection cap and a second convex part or concave part is formed in the puncture needle holder;
when the protection cap does not rotate predetermined degrees with respect to an axis of the lancet body, the first convex part or concave part and the second convex part or concave part are engaged to restrict movement of the protection cap in an axial direction of the lancet body; and
when the protection cap rotates the predetermined degrees with respect to the axis of the lancet body, the first convex part or concave part and the second convex part or concave part are disengaged to allow the movement of the protection cap in the axial direction of the lancet body.
2 Assignments
0 Petitions
Accused Products
Abstract
A puncture device to which a lancet having a protection cap is installed, where the protection cap can be reliably removed from the lancet with the lancet appropriately held by the puncture device. A first projection or recess is formed in the protection cap, and a second projection or recess is formed in the puncture device. When the protection cap is not rotated a predetermined angle about the axis of the lancet, the first projection or recess and the second projection or recess are engaged with each other to restrict the movement of the protection cap in the direction of the axis of the lancet. Further, when the protection cap is rotated the predetermined angle about the axis of the lancet, the engagement between the first projection or recess and the second projection or recess is released to allow the protection cap to move in the direction of the axis of a lancet body. Also, the protection cap having been rotated the predetermined angle about the axis of the lancet is separated from the lancet.
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Citations
23 Claims
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1. A puncture needle cartridge comprising:
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a lancet that comprises a lancet body that has a puncture needle at one end and a grip part to be held by a puncture device body at the other end, a protection cap that protects the puncture needle, and a connecting part that connects the lancet body and the protection cap separably; and a puncture needle holder that holds the lancet movably and is attached to the puncture device body, wherein; a first convex part or concave part is formed in the protection cap and a second convex part or concave part is formed in the puncture needle holder; when the protection cap does not rotate predetermined degrees with respect to an axis of the lancet body, the first convex part or concave part and the second convex part or concave part are engaged to restrict movement of the protection cap in an axial direction of the lancet body; and when the protection cap rotates the predetermined degrees with respect to the axis of the lancet body, the first convex part or concave part and the second convex part or concave part are disengaged to allow the movement of the protection cap in the axial direction of the lancet body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A lancet comprising:
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a lancet body that has a puncture needle at one end and a grip part to be held by a puncture device body at the other end; a protection cap that protects the puncture needle; and a connecting part that connects the lancet body and the protection cap separably, wherein; the lancet is held by a puncture needle holder attached to the puncture device body movably to constitute a puncture needle cartridge; a first convex part or concave part is formed in the protection cap and a second convex part or concave part is formed in the puncture needle holder; when the protection cap does not rotate predetermined degrees with respect to an axis of the lancet body, the first convex part or concave part and the second convex part or concave part are engaged to restrict movement of the protection cap in an axial direction of the lancet body; and when the protection cap rotates the predetermined degrees with respect to the axis of the lancet body, the first convex part or concave part and the second convex part or concave part are disengaged to allow the movement of the protection cap in the axial direction of the lancet body.
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12. A protection cap that is connected via a connecting part to a lancet body having a puncture needle at one end and a grip part to be held by a puncture device body at the other end to constitute a lancet, wherein:
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the lancet that is held by a puncture needle holder movably to constitute a puncture needle cartridge; a first convex part or concave part is formed in the protection cap and a second convex part or concave part is formed in the puncture needle holder; when the protection cap does not rotate predetermined degrees with respect to an axis of the lancet body, the first convex part or concave part and the second convex part or concave part are engaged to restrict movement of the protection cap in an axial direction of the lancet body; and when the protection cap rotates the predetermined degrees with respect to the axis of the lancet body, the first convex part or concave part and the second convex part or concave part are disengaged to allow the movement of the protection cap in the axial direction of the lancet body.
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13. A puncture device comprising a puncture device body and a lancet, which lancet comprises a lancet body that has a puncture needle at one end and a grip part to be held by the puncture device body at the other end, a protection cap that protects the puncture needle, and a connecting part that connects the lancet body and the protection cap separably, wherein:
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a first convex part or concave part is formed in the protection cap and a fourth convex part or concave part is formed in the puncture device body; when the protection cap does not rotate predetermined degrees with respect to an axis of the lancet body, the first convex part or concave part and the fourth convex part or concave part are engaged to restrict movement of the protection cap in an axial direction of the lancet body; and when the protection cap rotates the predetermined degrees with respect to the axis of the lancet body, the first convex part or concave part and the fourth convex part or concave part are disengaged to allow the movement of the protection cap in the axial direction of the lancet body. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A lancet that is attached to a puncture device body, comprising:
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a lancet body that has a puncture needle at one end and a grip part to be held by the puncture device body at the other end; a protection cap that protects the puncture needle; and a connecting part that connects the lancet body and the protection cap separably, wherein; a first convex part or concave part is formed in the protection cap and a fourth convex part or concave part is formed in the puncture device body; when the protection cap does not rotate predetermined degrees with respect to an axis of the lancet body, the first convex part or concave part and the fourth convex part or concave part are engaged to restrict movement of the protection cap in an axial direction of the lancet body; and when the protection cap rotates the predetermined degrees with respect to the axis of the lancet body, the first convex part or concave part and the fourth convex part or concave part are disengaged to allow the movement of the protection cap in the axial direction of the lancet body.
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Specification