Lancet for blood collection and puncture needle unit
First Claim
1. A lancet for puncturing a human body with a puncture needle to collect bodily fluids from the human body, comprising:
- a slider which is able to hold a puncture needle at one end, and is reversibly slidable in a linear direction so that a puncture operation by the puncture needle is carried out;
a cam ring which is flat-shaped and rotatable about its axis, has a cam groove that is engaged with a cam follower provided on the slider within its rotation plane, and slides the slider by its rotation operation;
an elastic force application member for applying a rotation force in a predetermined direction to the cam ring to slide the slider in a puncture direction;
a stopper arm for stopping the rotation of the cam ring to which a force is applied by the elastic force application member, or releasing the stopping; and
an anti-reverse-rotation mechanism which is implemented by a ratchet mechanism for preventing reverse rotation of the cam ring after the puncture operation.
7 Assignments
0 Petitions
Accused Products
Abstract
A lancet comprises a slider having a puncture needle holding mechanism at its one end; a cam ring which has a continuous cam groove, is rotatable about a support shaft, and has a cam ring claw and an anti-return claw for restricting the rotation; a ring spring for applying a force to rotate the cam ring; a rotatable stopper arm for holding and releasing the rotation of the cam ring; and a rotatable ratchet for restricting the direction of rotation of the cam ring. A puncture needle unit comprises a puncture needle body which is integrally molded with a protrusion to be fitted to the lancet, a rotation stop rib, and a puncture needle; and a puncture needle cap which is lightly pressed into the puncture needle body.
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Citations
26 Claims
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1. A lancet for puncturing a human body with a puncture needle to collect bodily fluids from the human body, comprising:
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a slider which is able to hold a puncture needle at one end, and is reversibly slidable in a linear direction so that a puncture operation by the puncture needle is carried out;
a cam ring which is flat-shaped and rotatable about its axis, has a cam groove that is engaged with a cam follower provided on the slider within its rotation plane, and slides the slider by its rotation operation;
an elastic force application member for applying a rotation force in a predetermined direction to the cam ring to slide the slider in a puncture direction;
a stopper arm for stopping the rotation of the cam ring to which a force is applied by the elastic force application member, or releasing the stopping; and
an anti-reverse-rotation mechanism which is implemented by a ratchet mechanism for preventing reverse rotation of the cam ring after the puncture operation. - View Dependent Claims (2, 3, 4, 5, 6, 15, 16, 17, 18, 19, 20, 21, 22)
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7. A lancet for puncturing a human body with a puncture needle to collect bodily fluids from the human body, comprising:
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a slider which is able to hold a puncture needle at one end, and is reversibly slidable in a linear direction so that a puncture operation by the puncture needle is carried out;
a link mechanism which is coupled to the other end of the slider;
a flywheel which is mounted rotatably with respect to the link mechanism, and is coupled to the link mechanism by implanting a rotation knot shaft as a shaft on the other end of the link mechanism coupled to the slider, in the flywheel;
an elastic force application member for applying a rotation force in a predetermined direction to the flywheel to slide the slider in a puncture direction through the link mechanism;
a stopper arm for stopping the rotation of the flywheel to which a force is applied by the elastic force application member, or releasing the stopping;
a set lever mechanism which is engaged with a wheel set pin provided on the flywheel, and rotates the flywheel only in one direction, thereby setting the slider in a puncture-ready position; and
an anti-reverse-rotation mechanism which prevents reverse rotation of the flywheel after the puncture operation. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 25, 26)
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23. A puncture needle unit comprising:
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a puncture needle body, and a puncture needle cap, said puncture needle body having a puncture needle main part having a needle at its front end, a protrusion to be fitted and fixed to a fitting and fixing hole provided on the lancet body, which protrusion is provided on an external surface of a base portion of the puncture needle main part, and a rotation stop rib for the puncture needle cap that covers the puncture needle body, which rib is provided on a side surface of an upper portion of the puncture needle body; and
said puncture needle cap being fitted to the rotation stop rib and lightly pressed into the puncture needle body to cover the puncture needle body. - View Dependent Claims (24)
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Specification