JP6289106B2 - Clinical laboratory equipment - Google Patents

Description

  Embodiments described herein relate generally to a clinical testing apparatus.

  A clinical test is performed in order to objectively evaluate the state of a subject such as a patient. A clinical laboratory apparatus is mainly used for this clinical examination. An example of a clinical examination apparatus is an automatic analyzer.

  The automatic analyzer dispenses a test sample including a patient's blood and urine and a reagent into a reaction container. The test sample may be simply referred to as “sample”. A reaction solution is generated from the sample and the reagent, and the components of the reaction solution are analyzed. After the analysis, the reaction container is washed with a detergent or pure water (these are called cleaning solutions) and dried. The dried reaction container is used for the next analysis (for example, Patent Document 1). Here, a unit that cleans and dries the reaction vessel is referred to as a “cleaning / drying unit”.

  The reaction vessel has a storage space whose horizontal cross section is a quadrangle. In cleaning the inner surface (inner wall and bottom surface) of the reaction vessel, the cleaning liquid is discharged into the reaction vessel and subsequently sucked, and then the discharge and suction are repeated. After washing the reaction vessel, a small amount of washing liquid is left at the corners on the inner surface of the reaction vessel. The cleaning liquid left on the inner surface of the reaction vessel after cleaning may be referred to as “residual water”.

  The washing / drying unit has a drying nozzle, a vacuum pump, and a tube. The drying nozzle has an outer shape having a square horizontal cross section. Further, the drying nozzle has a hollow portion therein. When the drying nozzle is fitted into the reaction vessel, a gap is formed between the corner on the inner surface of the reaction vessel and the corner on the outer surface of the drying nozzle. The hollow portion of the drying nozzle communicates with the outside air through a gap between the two. Further, the hollow portion of the drying nozzle is connected to a vacuum pump through a tube.

  In drying the reaction container, when a drying nozzle is fitted to the reaction container and the hollow part is made negative pressure (negative pressure) with respect to the outside air by the vacuum pump, the outside air passes through the gap between the two into the hollow part. The remaining water is sucked into the hollow part together with the outside air. Furthermore, outside air and residual water are led to the vacuum pump through the tube.

  In recent years, in order to increase the speed in clinical examination, the drying time has been shortened, and ensuring and improving the drying performance within the time has been required.

JP-A-6-160398

  However, the conventional drying nozzle has a problem that if the drying time is shortened, the drying performance cannot be secured, and the cleaning liquid remains in the reaction vessel, which affects the measurement result.

  This embodiment solves the above-described problem, and an object thereof is to provide a clinical examination apparatus capable of ensuring and improving the drying performance within a shortened drying time.

In order to solve the above-described problems, the clinical test apparatus according to the embodiment includes a suction nozzle connected to a vacuum pump through a tube, and a suction nozzle that contains the reaction liquid after analyzing the components of the reaction liquid. of connected to the distal end and washed by washing and drying unit is composed of a drying nozzle which is insertable formed in the reaction vessel, further, the anti-reaction container unit is dried by the drying nozzle. Dry燥用nozzle, a rod-shaped body of rectangular prism having an open distal end surface proximal surface suction nozzle is fitted and the outside air is formed inside the rod-shaped body of square pillar, suction at its proximal end face side nozzles are fitted, a hollow portion which Ru is communicating proximal face and distal face, and a hollow portion suction hole formed in communication with the distal end side of a square pillar over the base end face from the distal end surface of the rod-shaped body of square pillar A ventilation groove formed so as to have a substantially fan-shaped cross section at each ridge line in the longitudinal direction of the rod, and radially arranged from the suction hole toward each tip of the ventilation groove on the tip surface of the square rod-shaped body And a guide groove formed so as to connect the suction hole and the ventilation groove, and a vacuum pump in a state where the rectangular columnar rod is inserted into the reaction vessel with the tip end face first. When sucked and the hollow part becomes negative pressure, the reaction solution in the reaction vessel is hollowed from the outside of the rod-shaped body. It is sucked.

The front view which shows notionally the washing | cleaning / drying unit which concerns on 1st Embodiment. FIG. 3 is a partial perspective view of a cleaning / drying unit. The perspective view of the nozzle for drying. The top view of the nozzle for drying. The front view of the nozzle for drying. AA line sectional view of Drawing 5. The elements on larger scale of FIG. The bottom view of the nozzle for drying. B arrow view of FIG. The partial perspective view of the nozzle for drying. The whole perspective view of an automatic analyzer. The top view of the nozzle for drying which concerns on 2nd Embodiment. CC sectional drawing of FIG. The bottom view of the nozzle for drying. D arrow line view of FIG. FIG. 3 is a partial perspective view of a cleaning / unit.

  As described above, the reaction vessel has an accommodation space whose horizontal cross section is a quadrangle. A small amount of cleaning liquid (residual water) remains at the corners on the inner surface of the reaction container after the reaction container is cleaned.

  In drying the reaction vessel, when a drying nozzle is fitted into the reaction vessel, if there is a wide gap between the corner of the reaction vessel storage space and the corner of the outer surface of the drying nozzle, the drying nozzle is placed in the reaction vessel. It becomes easy to put. However, since excess outside air is supplied to the hollow part of the drying nozzle through a wide gap, the air permeability is too high, and the hollow part of the drying nozzle does not have sufficient negative pressure within a shortened time. The remaining water is not sucked up enough.

  However, if the gap between the two is simply narrowed, the resistance when air or residual water is sucked into the hollow portion of the drying nozzle becomes excessive, so that the air permeability becomes low and the residual water is not sufficiently sucked. That is, in order to suck the remaining water within the shortened time, it is required to ensure appropriate air permeability.

  By ensuring appropriate air permeability, drying performance can be secured and improved within a shortened time, and the speed of clinical tests can be increased.

  As an example of the clinical examination apparatus of this embodiment, an automatic analyzer will be described with reference to each drawing. Further, there are a drying nozzle having a hydrophobic property and a hydrophilic nozzle. Hereinafter, first, a hydrophobic drying nozzle will be described, and then, a hydrophilic drying nozzle will be described.

<First Embodiment>
Next, the automatic analyzer according to the first embodiment will be described with reference to FIGS.
FIG. 1 is a front view conceptually showing the cleaning / drying unit, FIG. 2 is a partial perspective view of the cleaning / drying unit, and FIG. 3 is a perspective view of the drying nozzle.

As shown in FIGS. 1 to 3, the cleaning / drying unit 13 includes a drying nozzle 20, a suction nozzle 31, a vacuum pump 32, and a tube 33.
The drying nozzle 20 includes a rod-shaped body 21, a hollow portion 22, a suction guide mechanism 23, and a ventilation groove 24.

(Bar-shaped body 21)
As the material of the rod-like body 21, a hydrophobic fluororesin (PTFE) is used. However, the material of the rod-shaped body 21 is not limited to this, and any material having chemical resistance, water resistance, and wear resistance may be used.

  4 is a plan view of the drying nozzle, FIG. 5 is a front view of the drying nozzle, FIG. 6 is a sectional view taken along the line AA of FIG. 5, FIG. 7 is a partially enlarged view of FIG. FIG. 9 is a bottom view of FIG.

  As shown in FIGS. 3 to 6, the rod-like body 21 has a quadrangular column 211. The quadrangular prism 211 has a length of about 20 mm and a rectangular horizontal section of about 3.6 mm × about 4.6 mm. The quadrangular column 211 has four wall surfaces 212 and four corner portions 213. Incidentally, the reaction vessel 51 (see FIG. 1) has a horizontal cross section of about 4.0 mm × about 5.0 mm. When the rod-shaped body 21 is fitted to the reaction vessel 51, the gap between the inner wall of the reaction vessel 51 and the wall surface 212 of the rod-shaped body 21 is about 0.2 mm. A distal end surface 214 and a proximal end surface 215 are provided at both ends of the rectangular column 211 in the longitudinal direction. In the front end surface 214 having a quadrangular shape, the four peripheral portions 2141 have a taper with a cut-off width of about 0.2 mm and a cut-off height of about 1.0 mm.

(Hollow part 22)
As shown in FIG. 6, the hollow portion 22 is provided inside the quadrangular column 211. The hollow portion 22 has a diameter of about 2.0 mm. The hollow portion 22 communicates with the outside on the base end face 215 side. As shown in FIGS. 1 and 2, a vacuum pump 32 is connected to the outside. One end of the suction nozzle 31 is fitted into the hollow portion 22. The suction nozzle 31 has an outer diameter of about 2.0 mm and an inner diameter of about 1.5 mm. The rod-shaped body 21 and the suction nozzle 31 may be integrally formed. Hereinafter, the one end portion of the suction nozzle 31 fitted in the hollow portion 22 may be referred to as a “hollow portion”.

  As shown in FIGS. 1 and 2, the other end of the suction nozzle 31 is connected to a vacuum pump 32 via a tube 33. When the air in the hollow portion 22 is sucked by the vacuum pump 32, the hollow portion 22 has a negative pressure with respect to the outside air. What is connected to the other end portion of the suction nozzle 31 via the tube 33 is not limited to the vacuum pump 32, and may be any negative pressure supply device that supplies a negative pressure to the hollow portion 22, for example.

(Suction guide mechanism 23)
As shown in FIGS. 4, 5, 6, 7 and 8, the hollow portion 22 is provided with a suction guide mechanism 23 for sucking air (including residual water). The suction guide mechanism 23 has a suction hole 231 that is formed in the center portion of the distal end surface 214 and communicates with the hollow portion 22. The suction hole 231 has a diameter of about 1.5 mm.
By making the diameter of the suction hole 231 and the inner diameter of the suction nozzle 31 substantially equal, the suction nozzle 31 fitted in the hollow portion 22 and the suction hole 231 are smoothly connected.

As shown in FIGS. 7, 8, 9, and 10, a guide groove 232 is provided on the distal end surface 214. The guide groove 232 is provided radially from the suction hole 231 provided in the central portion of the distal end surface 214 to the corner portion 213 of the distal end surface 214. The guide groove 232 has a V-shaped cross section. The V-shaped cross section has a groove width of about 0.5 mm and a depth of about 0.5 mm. That is, the V-shaped cross section has a predetermined area of about 0.125 (= 0.5 × 0.5 × 0.5) mm ² . The guide groove 232 is not limited to a V-shaped cross section as long as it has a substantially predetermined area. For example, the guide groove 232 may have a U-shaped cross section.

(Contrast between chamfered portion and ventilation groove 24)
If the gap between the two is widened, the air permeability is too high, the hollow portion 22 does not have a sufficient negative pressure, and the residual water cannot be sufficiently sucked. On the other hand, when the gap between the two is narrowed, when the drying nozzle is fitted into the reaction vessel 51, the drying nozzle 20 interferes with the reaction vessel 51, and the drying nozzle 20 is fitted into the reaction vessel 51. It becomes difficult to match. Therefore, it is preferable to provide a chamfered portion at the corner portion 213 on the outer surface of the drying nozzle 20.

  However, with a simple chamfered portion, the gap between the two is still narrow and appropriate air permeability cannot be ensured. The corner portion 213 on the outer surface of the drying nozzle 20 is provided with a ventilation groove 24 whose air permeability is improved from the chamfered portion.

(Ventilation groove 24)
As shown in FIGS. 4, 5, 8, and 10, a ventilation groove 24 is provided at each corner 213 extending from the distal end surface 214 to the proximal end surface 215. The ventilation groove 24 has a substantially fan-shaped cross section. The outer periphery of the substantially fan-shaped cross section has an arc 241 in a substantially quarter circle. The arc 241 has a radius of about 0.5 mm. The radius of the circular arc 241 is not limited to this, and is 2 to 3 times (0.4 in comparison to the gap between the inner wall of the reaction vessel 51 and the wall surface 212 of the rod-shaped body 21 (about 0.2 mm in the above-described example). ~ 0.6 mm).

  Note that the outer periphery of the substantially fan-shaped cross section is not limited to the arc 241. It is only necessary to use a peripheral edge 242 formed by a line connecting adjacent points at three or more points including points A and B located at both ends of the arc 241 (see FIG. 8). reference). For example, the peripheral edge 242 becomes a V-shaped peripheral edge when three points are provided on the arc 241. Further, when four or more points are provided on the arc 241, it becomes a peripheral edge having a polygon. Furthermore, the peripheral edge 242 has a shape close to the arc 241 when the number of points provided on the arc 241 increases.

  Next, another configuration of the automatic analyzer will be briefly described with reference to FIG. FIG. 11 is a perspective view showing the inside of the automatic analyzer 100.

  An automatic analyzer 100 shown in FIG. 11 includes a reagent rack 1, a first reagent container 2, a second reagent container 3, a reagent container 4, a reaction container 5, a rack sampler 6, a sample dispensing probe 7, and a first reagent dispensing probe. 8, a second reagent dispensing probe 9, a stirring unit 11, and a photometric unit 12.

(Sample container 61)
The rack sampler 6 is configured to store a plurality of racks in a line and to transport each rack to a predetermined position. A plurality of sample containers 61 are accommodated in the rack. A sample sample is stored in the sample container 61.

(Reagent container 4)
The first reagent store 2 and the second reagent store 3 contain a rotatable circular reagent rack 1. Each reagent container 4 is accommodated in the reagent rack 1 in a ring shape. The reagent container 4 containing the first reagent is placed in the first reagent container 2, and the reagent container 4 containing the second reagent is placed in the second reagent container 3. The first reagent and the second reagent are selected according to the measurement item of the test sample.

(Reaction vessel 51)
The reaction chamber 5 has a rotatable circular cassette member (not shown). A reaction vessel 51 is placed on the cassette member. By rotating the cassette member, the reaction vessel 51 is conveyed to the dispensing position, the stirring position, the measurement position, and the cleaning / drying position.

  Next, operations of sample / reagent dispensing, stirring, measurement of reaction solution, and washing / drying of the reaction vessel 51 will be described.

(Dispensing)
The sample dispensing probe 7 sucks the test sample from the sample container 61 transported to a predetermined position by the rack sampler 6 and discharges the test sample to the reaction container 51 transported to a specified discharge position.

  The first reagent dispensing probe 8 sucks the first reagent from the reagent container 4 transported to the specified suction position by the rotation of the reagent rack 1 of the first reagent storage 2, and the reaction transported to the specified discharge position. The first reagent is discharged into the container 51.

  The second reagent dispensing probe 9 sucks the second reagent from the reagent container 4 transported to the specified suction position by the rotation of the reagent rack 1 of the second reagent store 3, and the reaction transported to the specified discharge position. The second reagent is discharged into the container 51.

(Stirring)
The agitation unit 11 agitates the reaction liquid of the test sample and the reagents (first reagent and second reagent) in the reaction vessel 51 stopped at the agitation position for each cycle.

(Measurement)
The photometric unit 12 measures the reaction solution from the photometric position. The photometric unit 12 measures the absorbance of the reaction solution, and then outputs the measurement result data to a data processing unit (not shown). The data processing unit obtains the concentration of the reaction solution from the absorbance based on the calibration curve. Thereby, it becomes possible to measure the components of the reaction solution.

(Washing, drying)
The cleaning / drying unit 13 aspirates the reaction liquid that has been measured in the reaction container 51 stopped at the cleaning / drying position, and cleans / drys the reaction container 51.

  In the cleaning of the reaction vessel 51, a nozzle (not shown) is placed in the reaction vessel 51, and a cleaning liquid (detergent, pure water) is discharged into the reaction vessel 51 through the nozzle and then sucked. The discharge and suction of the cleaning liquid are repeated a plurality of times. Since the cleaning liquid discharged to the reaction vessel 51 is not completely sucked, a small amount of washing water remains at the corners on the inner surface of the reaction vessel 51.

  In drying the reaction container 51, the drying nozzle 20 is lowered and fitted into the reaction container 51. Thereafter, the drying nozzle 20 rises and escapes from the reaction vessel 51 in a short time.

  When the drying nozzle 20 is fitted into the reaction vessel 51, residual water exists in the gap between the corner portion on the inner surface of the reaction vessel 51 and the corner portion 213 on the outer surface of the drying nozzle 20. However, since the ventilation groove 24 provided in the corner portion 213 of the drying nozzle 20 is not blocked by the remaining water, appropriate air permeability is ensured.

  When the hollow portion 22 of the drying nozzle 20 is set to a negative pressure by the vacuum pump 32, outside air is sucked from the base end surface 215 side through the ventilation groove 24 toward the corner portion 213 on the distal end surface 214. At this time, the remaining water is also sucked together with the outside air. Outside air and residual water are guided to the suction hole 231 through the guide groove 232, and further sucked into the vacuum pump 32 from the suction hole 231 through the hollow portion 22 (one end portion of the suction nozzle 31). . Since the guide groove 232 is provided so as to extend from the corner portion 213 of the front end surface 214 to the suction hole 231, the outside air and the residual water are smoothly guided to the suction hole 231, and the drying nozzle 20 can be obtained in a short time. It is sucked into (hollow part 22). As a result, the reaction vessel 51 can be dried within the shortened time.

  The configuration and operation of the automatic analyzer 100 according to the first embodiment have been briefly described above.

Second Embodiment
Next, the drying nozzle 20 according to the second embodiment will be described with reference to FIGS. 1 and 12 to 16.

In the second embodiment, the same configurations as those in the first embodiment are denoted by the same reference numerals, the description thereof is omitted, and different configurations are mainly described.
In the drying nozzle 20, a hydrophobic nozzle is used in the first embodiment, but a hydrophilic nozzle is used in the second embodiment.

  The drying nozzle 20 includes a rod-shaped body 21, a hollow portion 22, a suction guide mechanism 23, and a ventilation groove 24. 12 to 16, the ventilation groove 24 is not shown.

(Porous material)
12 is a plan view of the drying nozzle, FIG. 13 is a sectional view taken along the line CC in FIG. 12, FIG. 14 is a bottom view of the drying nozzle, and FIG.
As shown in FIGS. 12 to 15, the drying nozzle 20 has a porous body. The porous body is formed in the shape of a rod-shaped body 21 having a hollow portion 22 using a porous film. The porous body is provided on the wall portion of the quadrangular column 211, and a large number of pores extending from the outside of the quadrangular column 211 to the hollow portion 22 are arranged. Thereby, air and residual water are guided to the hollow portion 22 from the outside of the quadrangular column 211.

  FIG. 16 is a partial perspective view of the cleaning / drying unit. As shown in FIG. 16, one end of the suction nozzle 31 is fitted into the hollow portion 22. Note that one end of the suction nozzle 31 fitted in the hollow portion 22 may be referred to as a “hollow portion”. A plurality of wall holes 311 pass through the peripheral wall at one end of the suction nozzle 31. The plurality of wall holes 311 are spirally arranged along the peripheral wall. Thereby, the remaining water can be uniformly guided into the hollow portion 22 from the periphery of the hollow portion 22 (one end portion of the suction nozzle 31).

  The other end of the suction nozzle 31 is connected to a vacuum pump 32 via a tube 33 (see FIG. 1). In the drying of the reaction vessel 51, when the hollow portion 22 is set to a negative pressure by the vacuum pump 32, the residual water attached to the corners on the inner surface of the reaction vessel 51 flows from the outside of the square column 211 into the pores in the porous body. The air is sucked into the hollow portion 22 through. Further, the vacuum pump 32 sucks the hollow portion 22 through the tube 33.

  Thus, since the residual water adhering to the corners on the wall surface of the reaction vessel 51 is sucked through the pores in the porous body, in the second embodiment in which the drying nozzle 20 has the porous body, the suction hole 231 and the guide groove 232 are not necessarily required. However, the remaining water also adheres to the corners on the bottom surface of the reaction vessel 51. The suction hole 231 and the guide groove 232 are provided so that the residual water adhering to the corner is not only sucked by the porous body alone but also by the suction hole 231 and the guide groove 232. .

(Suction hole 231)
As shown in FIGS. 13 and 14, the suction hole 231 has a diameter that is 1/3 to 1/2 times the diameter of the hollow portion 22. For example, when the diameter of the hollow portion 22 is about 2.0 mm, the diameter of the suction hole 231 is about 0.6 mm to about 1.0 mm. Accordingly, the remaining water is sucked into the hollow portion 22 through the suction hole 231 and the wall hole 311 of the suction nozzle 31. The diameter of the suction hole 231 is set corresponding to the diameter of the wall hole 311 of the suction nozzle 31.

  In the second embodiment, in drying the reaction container 51, the drying nozzle 20 is lowered and fitted into the reaction container 51. Thereafter, the drying nozzle 20 rises and escapes from the reaction vessel 51 in a short time.

  When the drying nozzle 20 is fitted into the reaction vessel 51, residual water exists in a gap between the corner portion on the inner surface of the reaction vessel 51 and the corner portion 213 of the drying nozzle 20. However, since the ventilation groove 24 provided in the corner portion 213 of the drying nozzle 20 is not blocked by the remaining water, appropriate air permeability is ensured.

  When the hollow portion 22 of the drying nozzle 20 is set to a negative pressure by the vacuum pump 32, outside air is taken from the base end face 215 side through the ventilation groove 24 into the gap between them, and passes through the pores in the porous body. Further, the air is sucked into the hollow portion 22 (one end portion of the suction nozzle 31) through the wall hole 311. At this time, the remaining water is also sucked together with the outside air.

  Residual water adhering to the corners on the bottom surface of the reaction vessel 51 is guided to the suction hole 231 through the guide groove 232 together with outside air. Furthermore, outside air and residual water are sucked into the vacuum pump 32 from the suction hole 231 through the hollow portion 22 (one end portion of the suction nozzle 31).

  Since the rod-shaped body 21 has a porous body, the rod-shaped body 21 is sucked into the drying nozzle 20 (hollow portion 22) in a short time from the corner portion 213 of the wall surface 212 of the quadrangular column 211. In addition, since the guide groove 232 is provided so as to extend from the corner portion 213 of the front end surface 214 to the suction hole 231, the outside air and the remaining water are smoothly guided to the suction hole 231, and can be used for drying in a short time. It is sucked into the nozzle 20 (hollow part 22). As a result, the reaction vessel 51 can be dried within the shortened time.

  The configuration described in the above embodiment can be applied to clinical examination apparatuses other than the automatic analyzer.

  Examples of clinical testing apparatuses include clinical analyzers such as automatic analyzers, blood gas analyzers, electrophoresis apparatuses, and liquid chromatography apparatuses, nuclear medicine apparatuses such as radioimmunoassay apparatuses, latex agglutination reaction measuring apparatuses, and nephelometers. Blood test equipment such as immune serum test equipment, automatic blood cell counter, blood coagulation measurement equipment, microbe classification and identification equipment, bacteria culture test equipment such as blood culture test equipment and DNA / RNA measurement equipment, urine analysis equipment, fecal occult blood measurement equipment, etc. Urinalysis equipment, pathological examination equipment such as automatic tissue cell staining equipment, physiological function testing equipment, other clinical examination equipment such as micropipette, washing device dispensing device, and centrifuge.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

100 automatic analyzer 1 reagent rack 2 first reagent storage 3 second reagent storage 4 reagent container 5 reaction container 51 reaction container 6 rack sampler 61 sample container 7 sample dispensing probe 8 first reagent dispensing probe 9 second reagent dispensing Note 11 Probe 11 Stirring unit 12 Photometric unit 13 Cleaning / drying unit 20 Drying nozzle 21 Bar-shaped body 211 Square column 212 Wall surface 213 Corner portion 214 Tip surface 2141 Peripheral portion 215 Base end surface 22 Hollow portion 23 Suction guide mechanism 231 Suction hole 232 Guide Groove 24 Ventilation groove 241 Arc 31 Suction nozzle 311 Wall hole 32 Vacuum pump 33 Tube

Claims (5)

The reaction vessel containing the reaction solution after analyzing the components of the reaction solution is formed so that it can be inserted into the reaction vessel connected to the suction nozzle connected to the vacuum pump via a tube and the tip of the suction nozzle. washed with washing and drying unit is composed of a drying nozzle, further, in the clinical test apparatus for drying the reaction vessel,
The drying nozzle is
And the rod-shaped body of rectangular prism having a front end surface of the suction nozzle is opened fitted to proximal end surface and the outside air,
Is formed inside the rod-shaped body of the quadrangular prism, it is the suction nozzle is fitted at its proximal end face side, and a hollow portion which Ru is communicating the base end surface and the tip surface,
A suction hole formed in communication with the distal end side of the hollow portion;
A ventilation groove formed so as to have a substantially fan-shaped cross section in each ridge line portion in the longitudinal direction of the rectangular column extending from the distal end surface to the base end surface of the rod-shaped body of the rectangular column;
The rod-shaped body of the quadrangular prism is radially arranged from the suction hole toward each tip of the ventilation groove, and is formed so as to communicate the suction hole and the ventilation groove. A guide groove
Have
When the rectangular columnar rod-like body is inserted into the reaction vessel with the tip end face first, the vacuum pump sucks the hollow part into a negative pressure, so that the reaction liquid in the reaction vessel is in the rod-like shape. A clinical test apparatus characterized by being sucked into the hollow part from the outside of the body .   The clinical examination apparatus according to claim 1, wherein the substantially sector-shaped cross section has an arc in a substantially quarter circle. The clinical examination apparatus according to claim 1 or 2 , wherein a material of the rod-like body is a hydrophobic resin containing a fluororesin. The rod-like body, a large number of pores is composed of arranged porous material leading from the outer side to the hollow portion side, when the reaction liquid is sucked, wherein the reaction solution, the rod-shaped body of the suction nozzle clinical examination device according to the outside of the quadrangular prism through a plurality of wall holes provided in the fitted been wall to claim 1 or claim 2, characterized in Rukoto him guide the hollow portion side. The clinical examination apparatus according to any one of claims 1 to 4, wherein the suction hole has a diameter of 1/3 to 1/2 times the diameter of the hollow portion.

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