Source: http://www.google.com/patents/US8157749?dq=7143430
Timestamp: 2017-11-19 16:52:28
Document Index: 545724049

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Patent US8157749 - Blood component measurement device and tip for blood measurement - Google Patents
A blood component measurement device (10) has a puncturing unit (18) provided inside a housing (12) and having a puncture needle (16); a button unit (20) for advancing and retreating the puncture needle (16); a contact mechanism (68) coming into contact with the skin of a person to be measured; and a...http://www.google.com/patents/US8157749?utm_source=gb-gplus-sharePatent US8157749 - Blood component measurement device and tip for blood measurement
Publication number US8157749 B2
Application number US 11/920,414
PCT number PCT/JP2006/309756
Also published as US8287468, US20090105613, US20110137207, WO2006123665A1
Publication number 11920414, 920414, PCT/2006/309756, PCT/JP/2006/309756, PCT/JP/6/309756, PCT/JP2006/309756, PCT/JP2006309756, PCT/JP6/309756, PCT/JP6309756, US 8157749 B2, US 8157749B2, US-B2-8157749, US8157749 B2, US8157749B2
Inventors Daisuke Nishiuchi
Patent Citations (20), Non-Patent Citations (1), Classifications (24), Legal Events (2)
Blood component measurement device and tip for blood measurement
US 8157749 B2
1. A blood component measurement device comprising:
a tip for blood measurement comprising a puncture needle possessing an axis and linearly movable for being advanced and retreated in an axial direction of the needle;
a contact section which has a cavity permitting said puncture needle to pass therethrough and which comes into contact with a skin, the contact section displaceable in a direction that is neither parallel nor perpendicular to the axis of said puncture needle;
a measurement unit for measuring a component of blood sampled; and
a blood introduction section spaced from said puncture needle in a direction substantially orthogonal to the axis of said puncture needle and communicating with said measurement unit, the blood introduction section being at a position out of contact with the skin when the puncture needle punctures the skin, and
after the skin is punctured by said puncture needle by linear advancement of the puncture needle in the axial direction, said blood introduction section is configured to be displaced from the position out of contact with the skin, in the axial direction of said puncture needle toward the skin and also in a direction substantially orthogonal to the axis of said puncture needle.
2. The blood component measurement device as set forth in claim 1,
wherein said blood component measurement device further includes a guide section holding said contact section, and
said blood introduction section is configured to be displaced under a guiding action of said guide section.
3. The blood component measurement device as set forth in claim 1,
wherein said contact section forms a part of said tip for blood measurement.
4. The blood component measurement device as set forth in claim 1,
wherein said blood introduction section forms a part of said tip for blood measurement.
5. The blood component measurement device as set forth in claim 1,
wherein said measurement unit forms a part of said tip for blood measurement.
6. The blood component measurement device as set forth in claim 1,
wherein said blood component measurement device includes a stopper which contacts the contact section for restricting displacement of said contact section, the stopper configured to move out of contact with the contact section after puncture of the skin by the puncture needle to permit the displacement of the contact section.
7. The blood component measurement device as set forth in claim 2,
wherein said contact section is provided with a first slant surface opposed to said guide section and inclined at a predetermined angle, said guide section is provided with a second slant surface making contact with said first slant surface, the first slant surface and the second slant surface are oriented at substantially the same angle, and said contact section is configured to be displaced relative to said guide section as a result of said first slant surface sliding along said second slant surface.
8. The blood component measurement device as set forth in claim 1,
wherein said blood component measurement device includes a housing, a button unit displaceably disposed inside said housing and operable to cancel a condition where the advancing and retreating of said puncture needle are restricted, and said button unit is exposed from said housing when said contact section is pressed against the skin.
9. The blood component measurement device as set forth in claim 1, wherein the blood introduction section is part of a guide section, and the guide section includes a sliding surface which is obliquely oriented relative to the axis of the needle, and wherein the blood introduction section is displaceable by sliding movement along the sliding surface.
10. A method for obtaining a blood sample comprising:
pressing a body part against a contact section which possesses a through hole;
linearly moving a needle possessing an axis in the axial direction of the needle through the through hole in the contact section to puncture skin of the body part at a puncture site with a tip end of the needle to result in a blood sample, the tip end of the needle being located in a first region of the through hole during puncture of the skin, the needle passing through a guide block during puncture of the skin, the guide block being movable relative to the contact section, the guide block including a blood introduction port connected to a passage, the blood introduction port being orthogonally spaced from the axis of the tip end of the needle and outside the first region;
relatively moving the guide block and the contact section after the puncture of the skin to cause the tip end of the needle to move away from said first region of the through hole of the contact section and to move the introduction port into the first region of the through hole of the contact section so that the introduction port is positioned adjacent the puncture site, wherein relatively moving the guide block and the contact section includes displacing the contact section in a direction that is neither parallel nor perpendicular to the axis of said puncture needle;
the blood sample at the puncture site being introduced into the introduction port and supplied to a test paper containing a reagent; and
measuring a component in the blood sample supplied to the test paper.
11. The method according to claim 10, wherein the first region of the through hole of the contact section is a center of the through hole of the contact section.
12. The method according to claim 10, wherein the relatively moving of the guide block and the contact section comprises the guide block and the contact section sliding relative to one another in a direction oblique to the axis of the tip end of the needle.
The contact member 70 has a center hole (cavity) 74 through which a part of the puncturing unit 18 is passed, a depression 76 formed on one end side thereof and depressed in an arcuate shape corresponding to the shape of a fingertip 148 of the person to be measured (see FIG. 4), and a pair of slant parts 78 formed on the other end side and inclined at a predetermined angle (for example, 45°) relative to the axis of the contact member 70. Incidentally, the contact member 70 is formed in a tapered shape such that the diameter is gradually reduced from an end face, which comes into contact with the person to be measured, toward the center hole 74. Therefore, when the fingertip 148 is brought into contact with the contact member 70, any surface of the contact member 70 can be pressed appropriately, whereby outflow of blood upon puncturing can be accelerated.
The pair of slant parts 78 are formed in such a direction (the direction of arrow X2) as to be spaced away from the depression 76, and are spaced from each other by a predetermined interval, with the center hole 74 as a center. The upper surfaces of the slant parts 78 are formed in a substantially flat surface shape substantially parallel to the axis of the contact member 70, and first slant surfaces 82 are formed which are inclined at a predetermined angle (for example, 45°) from end parts of the slant parts 78 toward the lower part side of the depression 76 (in the direction of arrow Y2). Incidentally, the pair of slant parts 78 are so disposed as to be substantially symmetric with each other, with the center hole 74 as a center.
The guide member 72 includes a block part 84 formed in a substantially rectangular parallelepiped shape and fixed to the second mount hole 66 in the holder 14, a pair of guide parts 86 formed on both sides of the block part 84, and a holding hole 88 formed in a substantially central part of the block part 84 so as to hold a part of the puncturing unit 18. The guide parts 86 are provided with second slant surfaces 90 inclined at a predetermined angle relative to the axis of the guide member 72, and the inclination angle of the pair of second slant surfaces 90 is set to correspond to the inclination angle of the slant surfaces of the contact member 70. The guide parts 86 are so shaped as to be substantially symmetric, with the holding hole 88 as a center.
The torsion grooves 232 are each so formed as to gradually turn by about 90° along the outer peripheral surface of the shaft part 234, with the axis of the shaft part 234 as a center. More specifically, the shapes of the torsion grooves 232 in the pair of rotary shafts 230 are so set as to be symmetrical with each other, with the axis of the slider 224 as a center.
When the slider 224 is displaced along the axial direction by another mechanism (not shown), the rotary shafts 230 are rotatingly displaced inside the shaft holes 226 by about 90° under the engaging actions between the projected streak parts 228 and the torsion grooves 232. In this case, the rotary shafts 230 are rotated in opposite directions so that the presser parts 236 are spaced away from each other. More specifically, the pair of presser parts 236 are brought into a substantially horizontal state through turning so as to approach the slots 26 in the housing 12. As a result, the condition where the displacement of the contact member 214 is restricted by the presser parts 236 is canceled, and the contact member 21 becomes capable of being displaced upward through the force of pressing against the skin of a person to be measured.
In the tip for blood measurement 200 configured as above, the pair of rotary shafts 230 in engagement with the projected streak parts 228 of the shaft holes 226 are rotated by about 90° in opposite directions attendantly on the displacement of the slider 224, resulting in cancellation of the condition where displacement of the contact member 214 is restricted by the presser parts 236. Attendant on this, the contact member 214 is displaced obliquely upwards along the second slant surfaces 238 of the tip body 206 by the force of pressing against the skin.
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U.S. Classification 600/584, 600/573, 600/583, 606/181
International Classification A61B5/00, A61B17/14, B65D81/00, A61B17/32
Cooperative Classification A61B5/15117, A61B2562/0295, A61B5/157, A61B5/15111, A61B5/150358, A61B5/14532, A61B5/150022, A61B5/150503, A61B5/1513, A61B5/150412, A61B5/15194, A61B5/1519, A61B5/150068
European Classification A61B5/145G, A61B5/157, A61B5/14B2
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:NISHIUCHI, DAISUKE;REEL/FRAME:020167/0212