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.
5 Assignments
0 Petitions
Accused Products
Abstract
A lancet having a slider with a puncture needle holding mechanism at one end thereof, and having a cam ring with a continuous cam groove, rotatable about a support shaft, and with a cam ring claw and an anti-return claw restricting the rotation. The lancet also having a ring spring applying a force to rotate the cam ring, having a rotatable stopper arm holding and releasing the rotation of the cam ring, and having a rotatable ratchet restricting the direction of rotation of the cam ring. A puncture needle unit including a puncture needle body integrally molded with a protrusion fitted to the lancet, a rotation stop rib, a puncture needle, and a puncture needle cap lightly pressed into the puncture needle body.
101 Citations
26 Claims
-
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. - View Dependent Claims (2, 3, 4, 5, 6, 15, 16, 17, 18, 19, 20, 21, 22)
-
-
7-14. -14. (canceled)
-
23. A puncture needle unit comprising:
-
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)
-
-
26. (canceled)
Specification