JP3486495B2 - Medical analyzer - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a medical analyzer for automatically dispensing a specimen or a reagent.

[0002]

2. Description of the Related Art In the technical field of conventional medical analyzers, for example, as disclosed in Japanese Patent Application Laid-Open No. 62-262751, a means for dispensing a sample or a reagent is shown in FIG. Structured dispensers are known. In this dispenser, a gear transmission mechanism 52 is driven by a motor 51 which is a drive device.
And a pipette (dispensing nozzle) 54 driven via the arm 53, and the nozzle 5 is provided at the tip of the pipette 54.
5 is attached. A line tube 56 is connected to the rear end of the pipette 54 and communicates with a pump (not shown).

The operation of the dispenser shown in FIG. 14 will be described below. The pipette 54 is inserted into the diluted sample in the sample container for sample held in the sample table (not shown), and the required amount of diluted sample is sucked from the nozzle 55 by the operation of the pump.

The continuous flow path of the nozzle 55, the pipette 54, and the line tube 56 is sequentially filled with the sample or diluted sample, air, and extruded liquid.

Next, the pipette 54 is driven via the motor 51, the gear transmission mechanism 52 and the arm 53, and moves to dispense the above-mentioned sample or diluted sample into the reaction tube held in the reaction table. After that, the pipette 54 returns to a predetermined position, and the pipette 54 is washed.

[0006]

As described above, in the case of the conventional dispenser, the pipette 54 is transported to various positions such as the sample table, the reaction tube and the washing position. Then, in order to improve the analysis speed, the pipette 54 is transported at high speed by the driving device.

However, in the above-mentioned conventional dispenser, when the sample table and the reaction tube are arranged at positions different from the predetermined positions due to an error in arrangement, the pipette 54 collides with them and the nozzle 55 is generated. There were problems such as bending and damaging the sample table and reaction tube.

Further, in general, the nozzle 55 of the pipette 54 is
The tip of the is sharply tapered in the shape of a tape, because it is necessary to accurately discharge the sample and the reagent. If the hand of the examiner mistakenly lies in the movement path of the nozzle 55 of the pipette 54, there is a risk of injury. There was a nature. Also, not just injuries,
A situation such as the infection of an immune infectious disease is also considered, which is a big issue.

The present invention has been made in view of the above problems, and a common object of each invention of claims 1 and 2 is as follows.
It is an object of the present invention to provide a highly safe medical analyzer capable of accurately detecting when a dispensing nozzle comes into contact with another object.

[0010]

A medical analyzer according to claim 1 comprises: a dispensing nozzle for dispensing a sample or a reagent; and a vibration detecting member for detecting a vibration of the dispensing nozzle and outputting a signal. , Occurs when the dispensing nozzle touches other objects around
Unnecessary vibration other than vibration and suppress the vibration suppressing member from being transmitted to the vibration detecting member that, Shin from said vibration detection member
Out of the above, when the dispensing nozzle touches other objects around
A band pass filter for extracting a vibration only occurring, while movably supporting the dispensing nozzle, the van
Based on the vibration signal extracted by the de-pass filter ,
And a conveying unit that stops the movement of the dispensing nozzle.

[0011] The medical analyzer according to claim 2 wherein the claim
In the medical analyzer according to 1, the movement of the dispensing nozzle
After stopping, the dispensing nozzle should be made to avoid further movement.
It is characterized by. The invention according to claim 3 is a claim
The medical analyzer according to Item 1, wherein the vibration suppressing member
Is made of a plurality of different materials. Claim
The invention according to claim 4 resides in the medical analyzer according to claim 3.
The vibration suppressing member is a boundary surface formed by joining different materials.
The feature is that the vibration is reflected by. From claim 5
Ming is the vibration in the medical analyzer according to claim 3.
The restraint member disperses powder of different materials inside the resin.
It is characterized by The invention according to claim 6 is a claim
Item 5. The medical analyzer according to Item 3, wherein the vibration suppressing member
Is a multi-layered resin made of different materials
And The invention according to claim 7 is for medical use according to claim 3.
In the analyzer, the vibration suppressing member is an acoustic impeder.
It consists of multiple materials with different
To do. The invention according to claim 8 is the medical component according to claim 1.
In the analyzer, the vibration suppression member prevents the unnecessary vibration from occurring.
Small surface that reduces the transmission path transmitted to the dispensing nozzle
A stacking part, and the transport means is provided with the small area part
It is characterized by supporting a dispensing pipe nozzle.

The operation of the invention according to claim 1 will be described below.
In the medical analyzer of the invention according to claim 1, a swivel arm system as in the conventional example may be adopted as the transporting means, or a linear motor or the like may be used to linearly move the dispensing nozzle. . The term "conveying means" includes not only a member (arm or the like) that directly supports the dispensing nozzle, but also a driving member such as a motor or a power transmission system that moves the member.

Further, at least the structure for stopping the transfer is required for the transfer means, but the operation after the transfer is once stopped can be variously modified. For example, immediately after stopping, the conveying means is reversed to move the dispensing nozzle backward, or immediately after stopping, the clutch provided in the power transmission system is released to free the movement of the conveying means. By carrying out, it becomes possible to more reliably prevent damage to the dispensing nozzle and occurrence of injury to the examiner.

Various sensors can be used as the vibration detecting member. For example, if a strain gauge, a piezoelectric element, etc. are attached to the dispensing nozzle and vibration caused by collision with an external object is detected, the dispensing nozzle can be used regardless of the material of other members that act on the dispensing nozzle. It is possible to reliably detect the vibration due to the collision based on the natural vibration of the.

Here, since the dispensing nozzle is supported by the conveying means, unnecessary vibration other than vibration due to collision of the motor, the power transmission mechanism, etc. is transmitted through the arm of the conveying means. To prevent malfunction due to this unwanted vibration, the
Of the signals from the vibration detection member, the dispensing nozzle is
Only the vibration that occurs when you touch another object
Filter and bandpass filter.
Based on the signal that is
Stop moving. This eliminates false detection of unnecessary vibration.
To prevent damage to the dispensing nozzle and injuries to the examiner.
Can be stopped.

The operation of the invention according to claim 2 will be described below. The invention according to claim 2 is the medical component according to claim 1.
In the analyzer, after stopping the movement of the dispensing nozzle,
Since the injection nozzle is caused to perform the avoidance operation further,
More reliably prevent damage to the nozzle and injury to the examiner.
It is possible to The invention according to claims 3 to 8
According to the above, it is decided to install vibration suppression members of different materials.
The unnecessary vibration is reflected at the boundary surface of each layer, and
The area helps reduce the transmission path of unwanted vibrations,
Only vibrations due to the collision of sledges can be reliably detected.
It

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below.

(First Embodiment) (Structure) FIGS. 1 to 4 show a medical analyzer according to the first embodiment. 1 is a side view of the first embodiment, FIG. 2 is an exploded perspective view of a dispensing nozzle 6 and a vibration suppressing member 14, FIG. 3 is a waveform diagram showing an output signal example from a vibration detecting member 11, and FIG. 3 is a block diagram showing a schematic configuration of the signal processing system according to the first embodiment. FIG.

The medical analyzer according to the first embodiment shown in FIG. 1 is made of a stainless steel tube having excellent corrosion resistance, and the tip portion is formed into a tapered portion 7 by drawing to accurately suck and discharge a sample or a reagent. It has a dispensing nozzle 6. The dispensing nozzle 6 is fixed at a position of a flange portion 8 formed on the upper portion thereof to an arm 9 driven by a driving means (not shown) with a screw or an adhesive.

A line tube 10 is connected to the upper portion of the dispensing nozzle 6, and the line tube 10 is
It is connected to a syringe pump (not shown). With this syringe pump, the sample and the reagent are sucked and discharged into the inside of the dispensing nozzle 6 and the washing water is discharged.

The arm 9 is capable of turning and moving up and down, and these are driven by a motor, not shown, which is a driving means. The arm 9 and a motor (not shown) constitute a conveying means.

At the position of the flange portion 8, a vibration detecting member 11 made of a plate-shaped or donut-shaped thin plate is arranged. As the vibration detecting member 11, a piezoelectric element (lead zirconate titanate: PZT) is used.

The piezoelectric element as the vibration detecting member 11 is polarized in the thickness direction, and a silver electrode (not shown) is formed on the surface in the thickness direction by vapor deposition. The vibration detecting member 11 outputs a voltage corresponding to the vibration 12 (shown by the broken line in FIG. 1) 12 generated in the dispensing nozzle 6. The vibration suppressing member 14 according to the first embodiment uses a synthetic resin in which metal powder and non-metal powder are uniformly dispersed.

The piezoelectric element constituting the vibration detecting member 11 may be lead zirconate titanate, lead titanate, polymer piezoelectric film (PVDF) or the like in addition to the lead zirconate titanate of the first embodiment. A piezoelectric effect can be obtained by performing polarization treatment. Further, the piezoelectric element is not limited to the plate shape as in the first embodiment, but can be formed in various shapes, and the piezoelectric element having an arc shape or a cylindrical shape on the surface of the cylindrical tube portion of the dispensing nozzle 6. It is also possible to bond and fix.

With such a vibration detecting member 11, when the dispensing nozzle 6 comes into contact with an obstacle, a voltage signal corresponding to the impact force received is obtained.

Here, unnecessary vibration (shown by a broken line in FIG. 1) 13 is transmitted from the driving means such as a motor to the vibration detecting member 11 through the arm 9 and further through the flange portion 8 of the dispensing nozzle 6. However, this unwanted vibration 13 causes erroneous detection when the vibration 12 due to the collision of the dispensing nozzle 6 is to be detected.

In the first embodiment, the vibration suppressing member 14
Is interposed between the flange portion 8 of the dispensing nozzle 6 and the arm 9 to damp or reflect the unwanted vibration 13 so that the unwanted vibration 13 from the driving means such as a motor is not transmitted to the vibration detecting member 11. There is something.

The vibration suppressing member 14 is a plate-shaped synthetic resin and has a structure in which metal powder or non-metal powder is uniformly dispersed therein. For example, an epoxy resin is used as the synthetic resin, and tungsten, zirconia, or alumina powder is used as the metal powder or the non-metal powder. By making the particle diameter of the powder a predetermined value and manufacturing the powder with a constant mixing ratio, the vibration suppressing member 14 having a high effect of damping the vibration inside can be obtained.

(Operation) Next, the operation of the medical analyzer according to the first embodiment will be described.

Vibration detection member 11 including the piezoelectric element
Can detect a minute distortion, and can also sensitively detect a deformation when the dispensing nozzle 6 slightly contacts a soft object such as an examiner's hand.

When another object collides with the dispensing nozzle 6, the dispensing nozzle 6 starts vibrating 12 at its own natural frequency. Therefore, as shown in FIG. 4, after amplifying the weak voltage signal from the vibration detecting member 11 by the amplifier 31, the bandpass filter (BPF) 32 causes the vibration of the frequency near the natural frequency of the dispensing nozzle 6. Take out only,
The dispenser nozzle 6 is compared by a comparator 33 with a certain reference value.
The signal processing system that causes the motor controller 34 to stop the operation of the motor 35 and to avoid the dispensing nozzle 6 only when the vibration exceeds the reference value is adopted as the conveying means.

In practice, the arm 9 repeatedly moves and stops at high speed, so that the vibration of the slight acceleration component at that time is detected by the piezoelectric element which is the vibration detecting member 11. Therefore, the comparator 33 sets a certain constant reference value so that a slight acceleration component is not detected.

Further, as shown in FIG. 3, the drive mechanism such as the motor 35 generates unnecessary vibrations 13 such as the rotational vibration of the motor 36 and the vibration of the gears, and the unnecessary vibrations 13 to the dispensing nozzle 6 via the arm 9. The vibration that is transmitted and combined with the vibration 12 due to the collision of the dispensing nozzle 6 is detected by the vibration detection member 11.

Most of the unnecessary vibrations 13 having frequencies other than the natural frequency of the dispensing nozzle 6 are removed by the bandpass filter 32, but the unnecessary vibrations 13 having the same frequency band as the natural frequency of the dispensing nozzle 6 are generated. , Cannot be excluded even by signal processing.

In this case, by the vibration suppressing member 14 installed between the arm 9 and the flange portion 8 of the dispensing nozzle 6,
The unwanted vibration 13 entering from the arm 9 can be removed by damping or reflection, and the vibration detecting member 11 can detect only the vibration 12 due to the collision of the dispensing nozzle 6.

The vibration suppressing member 14 of the first embodiment uses a synthetic resin in which metal powder and non-metal powder are uniformly dispersed. At this time, the acoustic impedance of the epoxy resin used as the synthetic resin is about 3 × 10 ⁶ Nsm ⁻³ , the acoustic impedance of tungsten dispersed inside is about 103 × 10 ⁶ Nsm ⁻³ , and the acoustic impedance of zirconia is about. 34 × 10 ⁶ Nsm ⁻³ , and the acoustic impedance of alumina is about 32 × 10 ⁶ Nsm ⁻³ , the difference in acoustic impedance is large, and the unwanted vibration 13 can be reflected well.

The metal powder or non-metal powder to be dispersed inside the vibration suppressing member 14 preferably has a large acoustic impedance different from that of synthetic resin.
0 × 10 ⁶ Nsm ^-3 ), iron (about 46 × 10 ⁶ Ns)
m ^-3 ), mica ceramics (approximately 16 × 10 ⁶ Ns
Similar effects can be obtained by using m ^-3 ). Similarly, the same effect can be obtained by forming the vibration suppressing member 14 by dispersing the same powder as that described above in synthetic rubber (hard rubber) or the like.

Further, by using a plate made of ceramics or the like as the vibration suppressing member 14, the unnecessary vibration 13 from the arm 9 constituting the conveying means is reflected at the contact surface between the arm 9 and the ceramics, and the dispensing nozzle 6 It is also possible to allow only a small amount to be transmitted to the flange portion 8 of the, so that only the vibration 12 due to the collision can be accurately detected.

5 and 6 show a modification of the first embodiment. In this modification, as shown in FIGS. 5 and 6, the vibration detection member 11 is embedded in the synthetic resin forming the vibration suppression member 15.

The lower surface of the vibration detecting member 11 is exposed from the vibration suppressing member 15 and is in contact with the flange portion 8 of the dispensing nozzle 6. It goes without saying that even if the vibration detecting member 11 is installed in this way, the same detection capability as in the case of the first embodiment can be obtained, and the vibration suppressing member 15 and the vibration detecting member 11 are integrated to form a component. Since the number can be reduced, the assembly is facilitated and the cost can be reduced.

Further, FIG. 7 shows another vibration suppressing member 16
Shows the configuration of. The synthetic resin (synthetic rubber) portion 17 in which metal powder or the like is dispersed in the synthetic resin described above is joined to the ceramics 18 to form the vibration suppressing member 16. The effect of damping the unnecessary vibration 13 by the synthetic resin portion 17, the boundary surface of different materials (the boundary surface between the ceramics 18 and the arm 9 or the dispensing nozzle 6), and the bonding boundary between the synthetic resin portion 17 and the ceramics 18 Due to the effect of reflection on the surface,
Further, it is possible to reduce erroneous detection due to the unnecessary vibration 13.

The vibration suppressing member 16 shown in FIG.
Although the vibration suppressing member 16 made of various kinds of materials is shown, in order to prevent the unnecessary vibration 13 from being easily transmitted to the vibration detecting member 11 installed in the dispensing nozzle 6, a further multi-layer structure has a good effect. can get.

(Effect) According to the first embodiment described above,
Vibration 1 when dispensing nozzle 6 accidentally collides with another object 1
Only 2 can be accurately detected, damage to the dispensing nozzle 6, the reaction tube, and the like can be prevented, and injuries to the examiner can be prevented. Therefore, it is possible to provide an extremely safe medical analyzer.

(Second Embodiment) (Structure) FIGS. 8, 9, and 10 show a second embodiment of the present invention. 8 is a side view of the second embodiment, and FIG.
10 and 10 each show a schematic perspective view of the dispensing nozzle 6 according to the second embodiment.

In the second embodiment, only parts different from the first embodiment will be described. In the second embodiment, on the contact surface side of the flange portion 8 of the dispensing nozzle 6 with the arm 9 of the conveying means, four hemispherical projections 19 as shown in FIG. 9 or as shown in FIG. It is characterized in that a pin-shaped projection portion 20 having a columnar shape and an upper end portion having a conical shape is provided. Further, in the second embodiment, the vibration suppressing member 14 is omitted. Other configurations are the same as those in the first embodiment.

(Operation) According to the medical analyzer of the second embodiment, the flange portion 8 of the dispensing nozzle 6 is provided with the protrusion 19 or the pin-shaped protrusion 20 that comes into contact with the arm 9 in a minute area. Therefore, the transmission area where the unnecessary vibration 13 from the arm 9 is transmitted to the dispensing nozzle 6 can be extremely reduced. As a result, the amplitude of the unwanted vibration 13 can be reduced, and the unwanted vibration 13 can be excluded only by the threshold value determination process in the comparator 33 of the signal processing system.
As a result, the vibration detection member 11 causes the vibration 12 due to the collision.
Only can be detected.

In the second embodiment, the flange portion 8 and the arm 9 are in point contact with each other in order to reduce the transmission area of the unnecessary vibration 13, but substantially the same is possible even if they are configured to be in line contact. The action can be obtained.

Further, the portion where the transmission area of the unnecessary vibration 13 is minute is not limited to being installed on the flange portion 8 side of the dispensing nozzle 6, but on the mounting surface side of the arm 9 to the dispensing nozzle 6. Even if installed, the same effect can be obtained,
Further, it goes without saying that the effect of removing the unwanted vibration 13 can be adjusted by appropriately changing the number of the projections 19 or the pin-shaped projections 20.

(Effect) According to the second embodiment, by reducing the transmission path of the unnecessary vibration 13, it is possible to accurately detect only the vibration 12 due to the collision of the dispensing nozzle 6, which is safe. It is possible to provide a high-quality medical analyzer.

(Embodiment 3) (Structure) FIGS. 11, 12, and 13 show Embodiment 3 of the present invention. 11 is a side view of the third embodiment, and FIGS. 12 and 13 are vibration suppressing members 21 and 2 of the third embodiment, respectively.
3 is shown. In the third embodiment, only the parts different from the first embodiment will be described below, and the other description will be omitted.

In the third embodiment, as shown in FIGS. 11 and 12, a large number of protrusions 22 each having a triangular cross section are formed on one surface of the vibration suppressing member 21, or as shown in FIG. A feature is that a large number of convex portions 24 having a quadrangular cross section are formed on one surface of the vibration suppressing member 23.

In the vibration suppressing member 21 shown in FIG. 12, the dispensing nozzle 6 is formed by the minute tips of the protrusions 22 having a triangular cross section.
The vibration suppressing member 23 shown in FIG. 13 comes into contact with the flange portion 8 of the dispensing nozzle 6 at the minute lower end portion of each convex portion 24 having a rectangular cross section.

The vibration suppressing member 21 and the vibration suppressing member 23 are respectively made of synthetic resin, hard rubber, ceramics or the like, and are manufactured by molding or firing.
Note that, as in the first embodiment, it is possible to use a vibration suppressing member in which metal powder or non-metal powder is dispersed in each material of the vibration suppressing member 21 or the vibration suppressing member 23. The other configuration is similar to that of the first embodiment, and therefore the description is omitted.

(Operation) According to the third embodiment, the vibration suppressing member 21 or the vibration suppressing member 23 has the effect of attenuating or reflecting the unwanted vibration 13, and the minute contact structure formed by the protrusions 22 or the protrusions 24. By reducing the transmission path of the unnecessary vibration 13 by this, the effect of reducing the amplitude of the unnecessary vibration 13 is obtained as a synergistic effect.
It is possible to accurately detect the vibration 12 due to the collision with another object that occurs in the above-mentioned manner without erroneously detecting the vibration 12.

The shape of the vibration suppressing member 21 or the vibration suppressing member 23 is not limited to that of the above-described third embodiment, and it is contacted and supported by the transmission path of the unnecessary vibration 13 in a minute area portion. With the shape, the same effect as that described above can be obtained. Other functions are the same as those in the first embodiment.

(Effect) According to the third embodiment, the dispensing nozzle 6 collides with another object due to the synergistic effect of attenuating or reflecting the unwanted vibration 13 and the effect of reducing the transmission path. Can be reliably prevented, and the safety of the medical analyzer can be further improved.

According to the embodiment of the present invention described above, the following configurations, operations and effects can be obtained.

(Appendix 1) The medical analyzer according to claim 1, wherein the vibration suppressing member is a synthetic resin or synthetic rubber in which one or more kinds of metal powder or non-metal powder are dispersed.

The operation of the structure described in Appendix 1 will be described below. Generally, when the ultrasonic vibration is vertically incident from the medium 1 to the medium 2, if the acoustic impedances of the mediums 1 and 2 are Z1 and Z2, the sound pressure reflectance R at the interface between the medium 1 and the medium 2 is R = (Z2-Z1) / (Z1 + Z2)
It is known that the greater the difference in acoustic impedance between the medium 1 and the medium 2, the greater the reflection of ultrasonic vibrations, and the lower the amount of vibration transmitted from the medium 1 to the medium 2.

Here, the acoustic impedance of the synthetic rubber is about 1.8 × 10 ⁶ Nsm ^-3 , and the metal such as stainless steel is about 45.7 × 10 ⁶ Nsm ^-3 .

When the metal powder is dispersed in the synthetic rubber, when the vibration hits the metal powder, the vibration is largely reflected at that portion,
By the time it passes through the vibration suppressing member, it will be reflected by many metal powders. As a result, the length of the propagation path becomes long, and the vibration can be greatly suppressed by the vibration damping effect of the synthetic rubber.

Further, synthetic resin such as nylon 66 is
The acoustic impedance is about 2.9 × 10 ⁶ Nsm ⁻³ , and non-metallic powder such as zirconia is about 34 × 10 6.
⁶ Nsm ^-3 . Even if the non-metal powder is dispersed in the synthetic resin, the vibration propagation path is lengthened by the same action, and the vibration can be greatly suppressed by the vibration damping effect of the synthetic resin.

As described above, by forming the metal powder or the non-metal powder, which is greatly different from the acoustic impedance of the synthetic rubber or the gold-made resin, in the vibration suppressing member, unnecessary vibration can be attenuated, and the dispensing nozzle. Only the vibration due to the collision of can be detected reliably.

According to the structure and the operation described in this supplementary note 1, it is possible to provide a highly reliable medical analyzer in which the effect of damping the unnecessary vibration of the vibration suppressing member is improved and the occurrence of false detection is eliminated. .

(Supplementary Note 2) The medical analyzer according to claim 1, wherein the vibration suppressing member is a plurality of layers of synthetic resin or synthetic rubber made of different materials.

The operation of the structure described in Appendix 2 will be described below. Based on the above-mentioned principle of reflection of vibrations incident on the medium 1 and the medium 2, by installing a vibration suppressing member composed of layers of different materials, unnecessary vibrations are reflected on the boundary surfaces of the respective layers and the vibration detecting member. It is possible to prevent the unnecessary vibration from being transmitted to, and it is possible to reliably detect only the vibration due to the collision of the dispensing nozzle.

According to the structure and the operation described in Supplementary Note 2, it is possible to provide a highly reliable medical analyzer that improves the damping and reflection effect of unnecessary vibration of the vibration suppressing member and eliminates the occurrence of false detection. it can.

[0068]

According to the invention described in claim 1, unnecessary vibration is eliminated.
Eliminates false detection of movement, damage of dispensing nozzle, injury of examiner
It is possible to provide a medical analyzer which is capable of reliably preventing the occurrence of the above, has high reliability, and is excellent in safety .

[0069] According to the invention described in claim 2, dispensing Bruno
More surely prevent the damage of the cheats and the injury of the examiner
It is possible to provide a medical analyzer capable of performing the above. Well
In addition, according to the invention of claims 3 to 8, different materials are used.
By installing a vibration suppression member, the boundary surface in each layer
Unwanted vibration is reflected by the small area part.
By reducing the transmission path, the vibration due to the collision of the dispensing nozzle
Can be reliably detected.

[Brief description of drawings]

FIG. 1 is a front view showing a schematic configuration of a medical analyzer according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of the medical analyzer according to the first embodiment of the present invention.

FIG. 3 is a waveform diagram showing vibration and unnecessary vibration according to the first embodiment of the present invention.

FIG. 4 is a block diagram showing a signal processing system according to the first embodiment of the present invention.

FIG. 5 is a front view showing a modified example of the first embodiment of the present invention.

FIG. 6 is an exploded perspective view of a modified example of the first embodiment of the present invention.

FIG. 7 is a perspective view showing a vibration suppressing member of another modification of the first embodiment of the present invention.

FIG. 8 is a front view showing a schematic configuration of a medical analyzer according to a second embodiment of the present invention.

FIG. 9 is a perspective view showing a dispensing nozzle of a medical analyzer according to a second embodiment of the present invention.

FIG. 10 is a perspective view showing another example of the dispensing nozzle of the medical analyzer according to the second embodiment of the present invention.

FIG. 11 is a front view showing a schematic configuration of a medical analyzer according to a third embodiment of the present invention.

FIG. 12 is a perspective view showing a vibration suppressing member in a medical analyzer according to a third embodiment of the present invention.

FIG. 13 is a perspective view showing another example of the vibration suppressing member in the medical analyzer according to the third embodiment of the present invention.

FIG. 14 is a front view showing a schematic configuration of a conventional analyzer.

[Explanation of symbols]

6 dispensing nozzle 7 Tapered part 8 Flange 9 arms 10 line tubes 11 Vibration detection member 12 vibration 13 unnecessary vibration 14 Vibration suppression member 15 Vibration suppression member 16 Vibration suppression member 17 Synthetic resin part 18 Ceramics 19 Projection 20 pin-shaped protrusions 21 Vibration suppression member 22 Projection 23 Vibration suppression member 24 convex

Claims (8)

(57) [Claims] The method according to claim 1] sample or reagent and dispensing nozzle for dispensing, and detecting vibration of said dispensing nozzle, a vibration detecting member for outputting a signal, when the dispensing nozzle touches the other object near A vibration suppressing member that suppresses transmission of unnecessary vibration other than the vibration that occurs in the vibration detecting member to the vibration detecting member;
Extracts only the vibration generated when touching other objects around
A band-pass filter, thereby movably supporting said dispensing nozzle, said bar
A medical analyzer, comprising: a transport unit that stops the movement of the dispensing nozzle based on the vibration signal extracted by the band pass filter . 2. The medical analyzer according to claim 1 , further comprising causing the dispensing nozzle to perform an avoiding operation after the movement of the dispensing nozzle is stopped. 3. The vibration suppressing member comprises a plurality of different materials.
The medical analysis according to claim 1, characterized in that
Machine. 4. The vibration suppressing member is made of different materials joined together.
The vibration is reflected by the boundary surface formed by the above-mentioned method.
The medical analyzer described. 5. The vibration suppressing member is different inside the resin.
Claims characterized in that the powder of the material
3. The medical analyzer according to 3. 6. The vibration suppressing member is made of different materials.
4. The resin according to claim 3, wherein the resin has a plurality of layers.
Medical analyzer. 7. The vibration suppressing member is an acoustic impedance
It is characterized in that each of the
The medical analyzer according to claim 3. 8. The vibration suppressing member prevents the unnecessary vibration from occurring.
Small surface that reduces the transmission path transmitted to the dispensing nozzle
A stacking part, and the transport means is provided with the small area part
The support for a dispensing pipe nozzle, The claim 1 characterized by the above-mentioned.
Medical analyzer.