BLOOD TEST DEVICE
First Claim
1. A blood test apparatus comprising:
- a housing which forms a chassis;
an internal cylinder body which is formed at one side of the housing;
a reciprocating section that moves back and forth inside the internal cylinder body;
a blood collection needle which is connected to the reciprocating section;
a blood sensor to which the blood collection needle is directed and provided at a tip part of the internal cylinder body;
a measuring circuit to which a signal of the blood sensor is supplied;
a negative pressure section which can be driven depending on the measuring circuit; and
an external cylinder body which covers the internal cylinder body and comprises an opening part at a tip side of the internal cylinder body, and is provided so as to be able to move relative to the internal cylinder body and return to a predetermined relative position,wherein the negative pressure section can create a negative pressure inside the external cylinder body.
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Accused Products
Abstract
A blood test device by which the amount of plumped skin at a puncture site for conducting a blood test or collecting the blood can be controlled at a constant amount so that a blood component can be accurately measured. Namely, a blood test device comprising: a housing; an inner tube provided in one side of the housing; a reciprocating unit which reciprocates within the inner tube; a blood collection needle connected to the reciprocating unit; a blood sensor facing to the blood collection needle and being located at the tip of the inner tube; a measurement circuit to which a signal is fed from the blood sensor; and a negative pressure unit driven by the measurement circuit; which further has an outer tube that is a tube covering the inner tube, having an opening in the tip side of the inner tube, being capable of relatively moving to the inner tube, and being provided so as to return to a definite relative position. The negative pressure unit as described above can apply a negative pressure to the inside of the outer tube.
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Citations
26 Claims
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1. A blood test apparatus comprising:
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a housing which forms a chassis; an internal cylinder body which is formed at one side of the housing; a reciprocating section that moves back and forth inside the internal cylinder body; a blood collection needle which is connected to the reciprocating section; a blood sensor to which the blood collection needle is directed and provided at a tip part of the internal cylinder body; a measuring circuit to which a signal of the blood sensor is supplied; a negative pressure section which can be driven depending on the measuring circuit; and an external cylinder body which covers the internal cylinder body and comprises an opening part at a tip side of the internal cylinder body, and is provided so as to be able to move relative to the internal cylinder body and return to a predetermined relative position, wherein the negative pressure section can create a negative pressure inside the external cylinder body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification