JP5234749B2 - Test solution analysis chip - Google Patents

Description

  The present invention relates to a test liquid analyzing chip which is inserted into a measuring instrument and analyzes the test liquid with the measuring instrument.

  2. Description of the Related Art Conventionally, as a test liquid analysis chip, as shown in Patent Document 1, there is a test chip in which an analysis chip from which blood is collected is inserted into an apparatus and the blood in the chip is analyzed.

  However, since a contact port with blood is arranged in the apparatus at the time of insertion and measurement, when blood is attached near the contact port, the inside of the apparatus is contaminated with blood. There is.

  Moreover, as shown in Patent Document 2, there is one in which a contact port is provided at an end opposite to the insertion side end of the test solution analysis chip. If it is such, a contact port will not be arrange | positioned in an apparatus at the time of insertion and a measurement.

However, there is a problem that the hand becomes dirty with blood when inserted into the apparatus, and there is a risk of infection and the like.
JP 2002-369816 A Japanese Patent Laid-Open No. 11-56821

  Accordingly, the present invention has been made to solve the above-mentioned problems all at once, and its main intended task is to prevent contamination inside the measuring instrument and prevent operator contamination.

  That is, the test liquid analysis chip according to the present invention is a test liquid analysis chip that is inserted into a measuring instrument and analyzes the test liquid, and the contact port with which the test liquid comes in contact with the contact An introduction path that communicates with the mouth and introduces the test solution into the measuring device; and a gripping portion that is gripped when inserted into the measuring device and is positioned outside the measuring device in the inserted state. The contact port is provided at a position different from the grip portion outside the measurement device in a state of being inserted into the measurement device.

  If this is the case, the contact port will not touch the inside of the measuring device, and the operator will not touch it when inserting it into the measuring device. Contamination can be prevented.

  As an embodiment for ensuring that an operator does not touch the contact hole, it is desirable that the contact hole is provided between the measurement device and the grip portion outside the measurement device.

  Further, as a specific embodiment for easily realizing the above-described configuration, the gripping portion is provided at the opposite insertion side end opposite to the insertion side end, and is inserted into the measuring instrument. In the above, it is desirable that the contact port is provided on a surface other than the non-insertion side end portion outside the measuring instrument.

  In the vicinity of the contact port, in order to reduce the contact area with the test fluid supply site such as a finger as much as possible and reduce contamination by the test solution adhering to the vicinity of the contact port, the contact port is a protrusion. It is desirable that it is formed.

  In order to further reduce the contact area with the test solution providing site, it is desirable that the protrusion has a curved shape in plan view.

  Further, in order to ensure that the test solution analysis chip can be inserted into the measuring device in the correct orientation, it is desirable to have an erroneous insertion preventing structure for preventing erroneous insertion into the measuring device.

  More specifically, the erroneous insertion prevention structure prevents the reverse insertion of the front and back, and in order to simplify the configuration of the erroneous insertion prevention structure, the shape of the insertion side end is the center in the longitudinal direction. It is desirable that it is formed by making it asymmetric with respect to the axis. If this is the case, by making the shape inside the insertion port of the measuring instrument an asymmetric shape corresponding to the insertion side end of the test solution analysis chip, insertion in the opposite case can be prevented, and the front and back sides are correct. Insertion only in cases can be performed reliably.

  In addition, the erroneous insertion prevention structure prevents the reverse insertion, that is, prevents insertion from the end portion on the opposite insertion side. In order to simplify the structure of the erroneous insertion prevention structure, It is desirable that the width of the insertion side end is made larger than the opening width of the chip insertion port of the measuring instrument.

  According to this erroneous insertion prevention structure, even if the test solution analysis chip is inserted in the wrong direction opposite to the front or back or front and back, it can be prevented from being completely inserted into the measuring instrument. . On the other hand, if the entire test solution analysis chip has, for example, a linear shape, the user must visually check and use it, and may be inserted into the measuring instrument in reverse or front-back direction. There is. With the above-described configuration, erroneous insertion can be reliably prevented, and malfunction and failure due to incorrect insertion of the test solution analysis chip can be prevented.

  As described above, according to the present invention, it is possible to prevent contamination of the measuring instrument and the operator.

  Next, an embodiment of a test liquid analysis chip 1 according to the present invention will be described with reference to the drawings. 1 is a diagram showing a test liquid analysis chip 1 and a concentration measuring device Z according to this embodiment, FIG. 2 is a perspective view of the test liquid analysis chip 1, and FIG. 3 is a test liquid analysis chip 1 FIG. 4 is a cross-sectional view taken along the line AA, and FIG. 5 is an exploded perspective view of the test liquid analysis chip 1.

  <Device configuration>

  The test liquid analysis chip 1 according to the present embodiment is used for a concentration measuring device Z using an electrode sensor Z3.

  The concentration measuring device Z measures, for example, blood glucose level in blood. As shown in FIG. 1, the concentration measuring device Z is inserted into the insertion port Z1 into which the test liquid analysis chip 1 is inserted, and inserted into the insertion port Z1. A positioning mechanism Z2 for positioning the test liquid analysis chip 1, an enzyme electrode sensor Z3 that moves forward and backward with respect to the positioned test liquid analysis chip 1, and a measurement voltage for the enzyme electrode sensor Z3. The measurement power supply Z4 to be applied, the current detection unit Z5 for detecting the current output from the enzyme electrode sensor Z3, and the measurement power supply Z4 are controlled, the detected current is differentiated, and the maximum value of the differential value is obtained. And a calculation unit Z6 for detecting and calculating the concentration of the measurement target substance in the test liquid. The enzyme electrode sensor Z3 includes a platinum (Pt) electrode at the tip, and a glucose oxidase (GOD) immobilization film is coated on the surface thereof.

  Specifically, as shown in FIG. 2, FIG. 3 and FIG. 4, the test liquid analysis chip 1 has a substantially rectangular shape in plan view with a protrusion shape on a part of its side, and is blood that is a test liquid. Are connected to the contact port 2, the introduction channel 3 that communicates with the contact port 2, and introduces blood into the inside by capillarity, and is provided on the terminal end side of the introduction channel 3. An opening 5 provided between the air hole 4 for discharging, the contact port 2 and the air hole 4 in the introduction path 3, communicates the introduction path 3 with the outside, and contacts the electrode sensor Z 3; 5 and a separation membrane 6 that separates plasma and serum, which are substances to be measured, from blood and passes them through the opening 5.

  Further, as shown in FIG. 2 in particular, the introduction channel 3 is formed with a test liquid reservoir 7 whose channel width is widened between the contact port 2 and the air hole 4. And the opening part 5 is formed in the side wall which forms this test liquid storage part 7 (refer FIG. 4). 2 and 3 and the like, reference numeral 8 denotes a positioning hole into which a pin or the like of the positioning mechanism Z2 is inserted when positioning to the concentration measuring device Z.

  In such a test liquid analysis chip 1, when the opposite insertion side end 1A opposite to the insertion side end 1D is inserted into the concentration measuring device Z as a measuring instrument, it is determined by an operator (user). It becomes a gripping part to be gripped. Here, the insertion-side end portion 1D is a distal end portion in the insertion direction in FIG. The anti-insertion side end 1A is a rear end in the insertion direction in FIG.

  That is, the grip portion 1A is a rear end portion in the insertion direction of the test solution analysis chip, and includes the upper surface 1A1, the lower surface 1A2, and the rear end surface 1A3 of the rear end portion. The gripper 1A is located outside the concentration measurement device Z (outside the insertion port Z1) in a state where the test solution analysis chip 1 is inserted into the insertion port Z1 of the concentration measurement device Z.

  Thus, in the test solution analyzing chip 1 of the present embodiment, the contact port 2 is outside the concentration measuring device Z (outside the inserting port Z1) in a state where it is inserted into the inserting port Z1 of the concentration measuring device Z. Further, it is provided at a location different from the gripping portion 1A.

  Specifically, the contact port 2 is provided between the concentration measuring device Z (the insertion port Z1) and the grip portion 1A in a state where the test liquid analysis chip 1 is inserted into the insertion port Z1.

  More specifically, it is provided on a projection 1B having a curved shape in plan view provided on the side surface (specifically, the left side surface) of the test liquid analysis chip 1 (see FIGS. 2 and 3). As shown in FIG. 3, the protrusion 1 </ b> B of the present embodiment has a partial circle shape, specifically, a semicircular shape in plan view. Thus, since the protrusion 1B is provided on the side surface of the test solution analysis chip 1, the manufacture of the chip 1 having the protrusion 1B can be simplified.

  In addition, the insertion side surface of the protrusion 1B functions as a catching portion. That is, the insertion side surface of the protrusion 1B has a structure in which the width of the test solution analysis chip 1 is larger than the width of the insertion port Z1 of the concentration measuring device Z. As a result, the test solution analysis chip 1 can be inserted into the insertion port Z1 up to the portion where the protrusion 1B is provided, and no further insertion is made, and the contact port 2 is accidentally inserted into the device. Can be prevented from entering.

  The test liquid analysis chip 1 according to the present embodiment has a three-layer structure including a lower substrate 11, an intermediate member 12, and an upper substrate 13. Hereinafter, the parts 2 to 7, 1A, and 1B will be described together with the description of the lower substrate 11, the intermediate member 12, and the upper substrate 13.

  The lower substrate 11 is a hydrophilic substrate having a substantially rectangular plate shape having a protruding shape on a part of the side surface. In the present embodiment, a hydrophilic coating is applied to the surface of a resin substrate such as PET or acrylic. As the hydrophilic coating, it is conceivable to coat polysaccharides such as heparin, nucleotides such as DNA, or compounds such as surfactants. In addition, what added hydrophilicity by plasma processing may be used.

  Also, a lower substrate projection 111 in a semicircular shape in plan view that forms the protruding portion 1B is formed on the side surface of the opposite end portion on the insertion side. And the through-hole 112 which forms the opening part 5 is formed in the part corresponding to the storage slit 123 of the intermediate member 12 mentioned later.

  The inner diameter of the through hole 112 is smaller than the diameter of the tip of the enzyme electrode sensor Z3. In other words, the opening 5 is smaller than the diameter of the tip of the enzyme electrode sensor Z3. Thereby, at the time of a measurement, the front-end | tip part of enzyme electrode sensor Z3 contacts the opening edge part of the exterior side of the opening part 5. FIG.

  A separation membrane 6 is attached to the opening edge of the through hole 112 on the upper surface side (contact surface side of the intermediate member 12). Thereby, the separation membrane 6 is provided in the opening 5 side opening of the opening part 5, and it can prevent that the separation membrane 6 contacts outside and is damaged.

  The separation membrane 6 is, for example, a polyethylene terephthalate (PET) membrane having a large number of micropores through which non-blood cell components such as plasma and serum other than blood cells pass from the blood. The separation membrane 6 may be a polycarbonate membrane or the like.

  The intermediate member 12 is a thin plate member having a substantially rectangular plate shape having a protruding shape on a part of the side surface, and is a double-sided tape in the present embodiment. Further, an intermediate member protrusion 121 having a semicircular shape in plan view that forms the protrusion 1B is formed on the side surface of the end portion on the side opposite to the insertion side.

  As shown in FIGS. 2 to 5, the intermediate member 12 has the introduction path 3 along with the upper surface of the lower substrate 11 and the lower surface of the upper substrate 13 by bonding or joining the lower substrate 11 and the lower substrate 11. An introduction slit 122 to be formed and a storage slit 123 to form the test solution storage section 7 are provided.

  As shown in FIG. 2 in particular, the introduction slit 122 has one end opened on the side surface of the intermediate member protrusion 121 and is formed linearly along the longitudinal direction of the intermediate member 12. Specifically, one end of the introduction slit 122 is formed so as to open on the side opposite to the insertion direction of the intermediate member protrusion 121 (the side opposite to the insertion direction). Thereby, the contact port 2 is formed so as to face the anti-insertion side in the protrusion 1B, and the operator can easily attach blood to the contact port 2 while holding the test liquid analysis chip 1.

  The storage slit 123 is for storing a predetermined amount of test liquid (blood) with the slit width expanding on the downstream side of the introduction slit 122. Specifically, the storage slit 123 has a substantially circular shape in plan view.

  In such a configuration, the introduction path 3 and the test liquid reservoir 7 are formed by bonding or bonding the lower substrate 11 and the upper substrate 13 together.

  As shown in FIGS. 2, 3, and 5, the upper substrate 13 is a hydrophilic substrate having a substantially rectangular plate shape having a protruding shape on a part of the side surface, like the lower substrate 11. Through-hole 132 is provided. Further, an upper substrate protrusion 131 having a semicircular shape in plan view that forms the protrusion 1B is formed on the side surface of the end portion on the side opposite to the insertion side.

  And the upper board | substrate 13 is the state attached to the intermediate member 12, and the through-hole 132 is connected to the terminal part of the introduction slit 122 (refer FIG. 4). The introduction path 3 is formed by the lower surface of the upper substrate 13, the inner surface of the introduction slit 122 of the intermediate member 12, and the upper surface of the lower substrate 11, and the test solution is formed by the lower surface and the inner surface and upper surface of the storage slit 123. A reservoir 7 is formed.

  Further, in the test liquid analysis chip 1 of the present embodiment, the member in which the opening 5 is formed is bent toward the introduction path 3 by the contact with the enzyme electrode sensor Z3.

  Specifically, the portion of the lower substrate 11 in which the through-hole 112 is formed is elastic while contacting the enzyme electrode sensor Z3 with the movement of the enzyme electrode sensor Z3 after the enzyme electrode sensor Z3 contacts after the measurement. Flex. More specifically, the thickness of the lower substrate 11 is adjusted so as to bend as the enzyme electrode sensor Z3 moves. Thereby, damage to the electrode sensor Z3 and damage to the chip 1 due to contact can be prevented.

  <Production method>

  Next, a manufacturing method of the test solution analysis chip 1 according to the present embodiment will be described with reference to FIG. First, the through-hole 112 is formed in the lower substrate 11 processed into a substantially rectangular plate shape by, for example, cutting. Moreover, the through-hole 132 which is the air hole 4 is formed in the upper board | substrate 13 processed into the substantially rectangular plate shape, for example by cutting. Further, an introduction slit 122 and a storage slit 123 are formed in the intermediate member 12 (double-sided tape) processed into a substantially rectangular plate shape so that one end is opened on the opposite side of the intermediate member protrusion 121. Next, the separation membrane 6 is attached to the upper surface of the lower substrate 11 so as to cover the through holes 112.

  And the lower board | substrate 11, the intermediate member 12, and the upper board | substrate 13 are adhere | attached. At this time, bonding is performed so that the through hole 132 of the upper substrate 13 communicates with the terminal end of the introduction slit 122 and the through hole 112 of the lower substrate 11 communicates with the storage slit 123 of the intermediate member 12.

  In this manner, the introduction path 3, the test liquid storage section 7 provided on the introduction path 3, and the substantially rectangular plate-shaped acrylic having the separation membrane 6 provided in the test liquid storage section 7 A test liquid analysis chip 1 is manufactured.

  In addition, as a raw material, although inorganic materials, such as resin other than an acrylic or glass, can also be manufactured, since a surface state changes with materials, there exists a difference also in capillary force. Therefore, it is necessary to change the cross-sectional shape of the introduction path 3 according to each material.

  <Effect of this embodiment>

  According to the test liquid analysis chip 1 of the present embodiment configured as described above, the contact port 2 does not touch the inside of the measuring instrument, and the operator touches the probe when inserting it into the measuring instrument. Therefore, it is possible to prevent the inside of the measuring apparatus and the operator from being contaminated.

  Furthermore, since the contact port 2 is formed in the semicircular projection 1B in plan view, the contact area between the blood supply site such as a finger and the contact port 2 can be made as small as possible. Dirt due to blood in the vicinity of 2 can be reduced.

  <Other modified embodiments>

  The present invention is not limited to the above embodiment. In the following description, the same reference numerals are given to members corresponding to the above-described embodiment.

  For example, in the above-described embodiment, the test liquid analysis chip 1 has a three-layer structure including the lower substrate 11, the intermediate member 12, and the upper substrate 13. However, as shown in FIG. You may comprise by the two-layer structure which consists of 13. In this case, the upper substrate 13 is bonded or bonded to the upper surface of the lower substrate 11 together with the lower surface of the upper substrate 13, and the concave groove 11 a that forms the introduction path 3 and the test liquid storage portion 7. A storage groove 11b to be formed and a through hole 112 to form the opening 5 are provided.

  Further, as shown in FIG. 7, in the lower substrate 11, an annular step 113 for accommodating and fixing the separation membrane 6 may be formed at the opening edge on the upper surface side of the through hole 112. The depth of the annular step 113 is substantially the same as the thickness of the separation membrane 6. Thereby, when the separation membrane 6 is accommodated in the annular step 113, the upper surface of the lower substrate 11 and the upper surface of the separation membrane 6 are flush with each other. Thereby, the blood can easily flow through the introduction path 3 (the test liquid storage section 7) without the separation membrane 6 interfering with the capillary phenomenon in the introduction path 3 (the test liquid storage section 7).

  In addition, if the test liquid analysis chip 1 of the above-described embodiment has an erroneous insertion prevention structure that prevents erroneous insertion into the measuring instrument Z, it is inserted into the insertion port Z1 of the measuring instrument Z in the correct orientation. Can do.

  As the structure for preventing erroneous insertion, there are a structure for preventing the test liquid analysis chip 1 from being inserted in the opposite direction and a structure for preventing the test liquid analysis chip 1 from being inserted in the reverse direction. These will be described with reference to FIGS. In FIG. 9, (A) shows a correctly inserted state, (B) and (C) show a state of being inserted upside down, and (D) shows a state of being inserted back and forth. In FIGS. 9A and 9D, the hatching applied to the test solution analysis chip 1 is colored.

  First, an erroneous insertion prevention structure for preventing the test solution analysis chip 1 from being inserted upside down will be described. This erroneous insertion prevention structure is configured by making the shape of the insertion-side end 1D of the test solution analysis chip 1 asymmetric with respect to the central axis BB in the longitudinal direction. At this time, as shown in FIGS. 8 and 9, the shape of the insertion port Z1 of the measuring instrument Z is such that the test liquid analysis chip 1 is inserted only when the test liquid analysis chip 1 is inserted correctly. It becomes a shape corresponding to the asymmetrical shape of the insertion side end portion 1D so that it can be inserted only into the. Here, the correct insertion means that the opening 5 (separation membrane 6) provided in the test solution analysis chip 1 is inserted so as to face the enzyme electrode sensor Z3 side.

  If this is the case, when the user inserts the test solution analysis chip 1 into the measuring instrument Z in an inverted state, as shown in FIGS. 9B and 9C, the insertion side end 1D is The test solution analysis chip 1 cannot be inserted to a measurable position because it is held by the insertion port Z1, and erroneous insertion can be prevented. Further, even if it is erroneously inserted, the contact port 2 is always located outside the measuring device Z, and the inside of the device Z is not soiled.

  Next, a description will be given of an erroneous insertion prevention structure for preventing the test solution analysis chip 1 from being inserted in the opposite direction, that is, the insertion from the opposite end 1A. This erroneous insertion prevention structure is configured by making the width of the opposite end 1A of the test solution analysis chip 1 larger than the opening width of the insertion port Z1 of the measuring instrument Z. At this time, since the opening width of the insertion port Z1 is a width corresponding to the width of the insertion side end 1D of the test liquid analysis chip 1, the width of the counter insertion side end 1A is the insertion side end 1D. Greater than the width of In addition, you may comprise this incorrect insertion prevention structure by the projection part 1B of the said embodiment.

  In such a case, when the user inserts the test solution analysis chip 1 into the measuring instrument Z from the non-insertion side end 1A, the insertion side end 1D is inserted as shown in FIG. Since it is held by the mouth Z1, the test solution analysis chip 1 cannot be inserted to a measurable position, and erroneous insertion can be prevented. Similarly to the case where the front and back sides are reversed, the contact port 2 is always located outside the measuring device Z even if it is erroneously inserted, and the inside of the device Z is not soiled.

  Furthermore, as an erroneous insertion prevention structure, it is configured by coloring only one of the insertion side end 1D or the anti-insertion side end 1A, or by coloring the insertion side end 1D and the anti-insertion side end 1A differently. May be. FIGS. 9A and 9D show a case where only the counter-insertion side end 1A is colored. In FIG. 8, coloring is not shown. Thereby, the user can visually distinguish the insertion-side end 1D and the non-insertion-side end 1A, and can prevent erroneous insertion more reliably.

  In addition, the structure for preventing erroneous insertion is configured by coloring only one of the front surface and the back surface of the test liquid analysis chip 1 or by applying a different color to the front surface or back surface of the test liquid analysis chip 1. Also good. Thereby, the user can visually distinguish the front surface and the back surface of the test liquid analysis chip 1 and can more reliably prevent erroneous insertion. In addition to coloring or instead of coloring, characters can be displayed and distinguished.

  Furthermore, although the intermediate member 12 of the said embodiment was a double-sided tape, you may use the board | substrate which has hydrophilic property similarly to the upper board | substrate 13 and the lower board | substrate 11. FIG. In this case, at least the inner surfaces of the introduction slit 122 and the storage slit 123 are subjected to hydrophilic coating. In this case, as a method for bonding or bonding the upper substrate 13, the intermediate member 12, and the lower substrate 11, in addition to using a double-sided tape, thermal fusion or ultrasonic bonding can be considered.

  Further, the shape of the protrusion 1B is not limited to a partial circle in plan view, and may be another curved shape such as a partial ellipse. Further, the protruding portion 1B is not limited to a curved shape, and may be any shape as long as it makes the contact with the blood donating site small, for example, a pointed shape.

  Furthermore, it may not have the protrusion 1B. In this case, waterproofing may be performed around the contact port 2 so that blood that has contacted the contact port 2 does not spread along the periphery, or a process such as providing a groove around the contact port 2 may be performed.

  In addition, as shown in FIG. 10, in order to prevent the contact port 2 from entering the device Z, a hook portion 1C having a width larger than the opening width of the device insertion port Z1 may be provided. In this case, the contact port 2 is provided on the anti-insertion side (rear end surface side) with respect to the hook portion. Thereby, it can prevent suitably that the contact hole 2 is arrange | positioned in the apparatus Z accidentally.

  Further, the surface on which the contact hole is provided is not limited to the side surface, and may be an upper surface or a lower surface.

  Furthermore, in the above-described embodiment, the grip portion is the end portion on the opposite side of the test solution analysis chip (the rear end portion in the vicinity of the rear end surface). Also good.

  In addition, the introduction path 3 of the above embodiment may not have the test liquid storage section 7. In this case, the flow path width of the introduction path 3 can be set according to the size of the opening 5, or the size of the opening 5 can be set according to the flow path width of the introduction path 3.

  In addition, the test liquid analysis chip 1 of the above embodiment has the blood cell separation membrane 6 that allows only non-blood cell components to pass therethrough and separates the non-blood cell components from the blood. The component to be measured may be separated from the test liquid. In this case, the separation membrane 6 is selected according to the test solution and the measurement target component.

  Furthermore, in the said embodiment, although the structure bent by the contact of an electrode sensor is implement | achieved by thickness, you may make it implement | achieve the structure bent by selecting a material other than that.

  In addition, some or all of the above-described embodiments and modified embodiments may be combined as appropriate, and the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention. .

The figure which shows the test | inspection liquid analysis chip | tip and concentration measuring apparatus which concern on one Embodiment of this invention. The perspective view of the test liquid analysis chip of the embodiment. FIG. 3 is a plan view of the test liquid analysis chip of the embodiment. AA sectional view taken on the line. The disassembled perspective view of the test liquid analysis chip of the embodiment. The disassembled perspective view of the test liquid analysis chip concerning other modification embodiments. Sectional drawing of the test solution analysis chip | tip which concerns on other deformation | transformation embodiment. Perspective view of a test liquid analysis chip according to another modified embodiment The figure which shows the insertion state of the test solution analysis chip | tip which concerns on other embodiment. The top view of the test liquid analysis chip concerning other modification embodiments.

Explanation of symbols

Z ... Measuring instrument 1 ... Test solution analysis chip 2 ... Contact port 3 ... Introduction path 1A ... Grasping part 1B ... Projection part

Claims (7)

A test liquid analysis chip for analyzing a test liquid, which is inserted into a measuring instrument after collecting the test liquid,
Formed on the side surface of the protrusion provided on the side surface of the test solution analysis chip, and a contact port with which the test solution contacts;
In the state of being inserted into the measuring device, in the measuring device, a test liquid storage unit in which the test liquid is stored,
An introduction path that communicates with the contact port and the test liquid reservoir and introduces the test liquid into a measuring device;
A gripping part that is gripped when inserted into the measuring instrument and is positioned outside the measuring instrument in the inserted state, and
In the state of being inserted into the measuring device, the contact port is provided at a position different from the grip portion outside the measuring device ,
With respect to the insertion direction into the measuring instrument, the test liquid storage part, the contact port, and the grip part are arranged in this order,
The test liquid analysis chip has a shape in which the width dimension in the insertion direction is larger than the width dimension in the direction perpendicular to the insertion direction in plan view,
The contact opening is open to the grip portion side of the side surface of the protrusion,
A test liquid analysis chip in which the introduction path extends obliquely from the contact port to the test liquid storage section with respect to the insertion direction .   The test liquid analysis chip according to claim 1, wherein the contact port is provided between the measurement device and the grip portion outside the measurement device. The gripping portion is provided at the opposite end of the insertion side opposite the insertion end;
The test solution analysis chip according to claim 1, wherein the contact port is provided on a surface other than the non-insertion side end outside the measurement device in a state of being inserted into the measurement device. The protrusion, the sample liquid analysis chip according to claim 1, wherein in which curvilinear shape in plan view. It claims 1 to 4 test fluid analysis chip according comprises erroneous insertion preventing structure for preventing the erroneous insertion into the measuring instrument. The test solution according to claim 5 , wherein the prevention structure prevents insertion opposite to the front and back sides, and is configured such that the shape of the insertion side end is asymmetric with respect to the central axis in the longitudinal direction. Analysis chip. The prevention structure is for preventing insertion from the opposite end portion, and is configured by making the width of the opposite end portion larger than the opening width of the chip insertion port of the measuring instrument. The test solution analysis chip according to claim 6.