JP4549359B2 - Tube pump - Google Patents
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- JP4549359B2 JP4549359B2 JP2007048235A JP2007048235A JP4549359B2 JP 4549359 B2 JP4549359 B2 JP 4549359B2 JP 2007048235 A JP2007048235 A JP 2007048235A JP 2007048235 A JP2007048235 A JP 2007048235A JP 4549359 B2 JP4549359 B2 JP 4549359B2
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- tube
- detection sensor
- shape change
- tube pump
- supply
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- 238000001514 detection method Methods 0.000 claims description 32
- 239000007788 liquid Substances 0.000 claims description 18
- 238000005096 rolling process Methods 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims 3
- 238000011144 upstream manufacturing Methods 0.000 description 6
- 238000000502 dialysis Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Description
本発明は、人工透析装置等に搭載されるローラ式チューブポンプに関する。 The present invention relates to a roller-type tube pump mounted on an artificial dialysis machine or the like.
汎用されているチューブポンプでも、上述特許文献にも見られる通り、送液状況の把握手段には種々の改善が提案され、それぞれ所定の効果を実現しているが、構成の簡易化課題と共に、改善の余地の大きいことは疑いがない。 Even with a general-purpose tube pump, as seen in the above-mentioned patent document, various improvements have been proposed for the means for grasping the liquid feeding situation, and each has achieved a predetermined effect. There is no doubt that there is a lot of room for improvement.
また、周知の従来構成として、ローラ転動押圧部位の上流側・下流側双方に、チューブ外形変化検知センサを備えるものも知られている。 Moreover, what is equipped with a tube external shape change detection sensor is known as both well-known conventional structures in the upstream and downstream of a roller rolling press part.
供給バッグに入った液体をチューブポンプにより送り出すシステムで、供給バッグ内の液体の供給が終了したことを検知するために、吸引側(上流側)に例えば外形変化検知センサを配置して、供給バッグ内の液体の供給が終了したとき上流側に生じるチューブ内の負圧でチューブが変形するので、センサがこれを検知することにより、供給バッグが終了したことを検出する構成も実用に供されている。 In order to detect the completion of the supply of the liquid in the supply bag in the system that feeds the liquid that has entered the supply bag with a tube pump, for example, an external shape change detection sensor is arranged on the suction side (upstream side), and the supply bag Since the tube is deformed by the negative pressure in the tube that is generated upstream when the supply of the liquid in the inside is completed, a configuration that detects that the supply bag has ended by detecting this is also put into practical use. Yes.
また、チューブポンプ下流側にチューブの閉塞を監視するため、例えば外形変化検知センサを設置して、チューブポンプ下流側に閉塞が発生したとき、チューブポンプ下流側のチューブ内に生じる正圧でチューブが変形するので、センサがこれを検知することにより、閉塞を検出するようにするものもある。
なお、この外形変化検知センサは、チューブのセット検出を目的として設けられることもある。
In order to monitor the blockage of the tube on the downstream side of the tube pump, for example, when an external shape change detection sensor is installed and the blockage occurs on the downstream side of the tube pump, the tube Some of them are deformed so that the sensor detects this to detect the blockage.
In addition, this external shape change detection sensor may be provided for the purpose of tube set detection.
本発明に成るチューブポンプは、弾性チューブ内の液体を、ローラの転動押圧によって移送するように構成されるチューブポンプで、ローラ転動押圧の下流側にチューブ外形変化検知センサを備え、該チューブ外形変化検知センサの信号が、供給バッグ内の液体の供給終了検知手段となるように構成され、又は、 The tube pump according to the present invention is a tube pump configured to transfer the liquid in the elastic tube by the rolling press of the roller, and includes a tube external shape change detection sensor on the downstream side of the roller rolling press, and the tube The signal of the external shape change detection sensor is configured to be a supply end detection means of the liquid in the supply bag, or
前記チューブ外形変化検知センサの信号と共に、駆動電動機の電流波形が、供給バッグ内の液体の供給終了検知手段として利用できるように構成され、好ましくは、 Along with the signal from the tube outer shape change detection sensor, the current waveform of the drive motor can be used as a supply end detection means for the liquid in the supply bag.
前記チューブ外形変化検知センサの信号と駆動電動機の電流波形との同期した変化が、供給バッグ内の液体の供給終了検知手段となるように構成され、又は、 The synchronous change between the signal of the tube outer shape change detection sensor and the current waveform of the drive motor is configured to be a liquid supply end detection means in the supply bag, or
前記チューブ外形変化検知センサの信号による供給バッグ内の液体の供給終了とする判定の閾値を、当該チューブポンプの動作速度に応じて任意に設定できるように構成されている。 The threshold value for determining the end of the supply of the liquid in the supply bag based on the signal from the tube outer shape change detection sensor can be arbitrarily set according to the operating speed of the tube pump.
本発明は、上流側に外形変化検知センサを設置しなくても、供給バッグ内の液体の供給終了を検知することを可能とする。 The present invention makes it possible to detect the end of the supply of the liquid in the supply bag without installing an outer shape change detection sensor on the upstream side.
以下図面によって本発明の実施例を説明する。 Embodiments of the present invention will be described below with reference to the drawings.
図1は、本発明に成るチューブポンプを含む医療システムの例の構成の概要を示すもので、図2は、これに対応する従来技術構成の例を示すものである。 FIG. 1 shows an outline of a configuration of an example of a medical system including a tube pump according to the present invention, and FIG. 2 shows an example of a related art configuration corresponding thereto.
両図を対比して明らかなように、本発明の骨子は、従来技術で併設されている上流側外形変化検知センサを無用とし、簡易化したものである。 As can be seen by comparing the two figures, the gist of the present invention simplifies the use of the upstream external shape change detection sensor provided in the prior art.
図1から理解される通り、供給バッグ内の液体の供給が終了した後も、チューブポンプが動作し続けると、チューブポンプのローラ7がチューブをしごいた後、チューブから離れるタイミングに同期して、下流側のチューブ内に負圧が発生し、下流側外形変化検知センサの出力信号は、任意のレベルの振幅に変化する。
As understood from FIG. 1, if the tube pump continues to operate even after the supply of the liquid in the supply bag is completed, the
そして、チューブポンプ駆動電動機の電流波形も、ローラ7がチューブをしごき始めるタイミングに同期して任意のレベルの振幅に変化する。
これらより、チューブポンプ駆動電動機の電流波形の振幅周期と、下流側外形変化検知センサ出力信号の振幅周期は、図3に示す通り一致(同期)する。
The current waveform of the tube pump drive motor also changes to an amplitude of an arbitrary level in synchronization with the timing when the
From these, the amplitude cycle of the current waveform of the tube pump drive motor and the amplitude cycle of the downstream side external shape change detection sensor output signal coincide (synchronize) as shown in FIG.
図4は、チューブポンプ動作速度が低速の場合の、チューブポンプ駆動電動機の電流波形と下流側外形変化検知センサ出力信号の関係を示すもので、駆動電動機の電流波形に同期した下流側外形変化検知センサの信号変化量、及び、駆動電動機の電流波形の変化量が、所定の閾値を超えた場合、医療用装置は供給バッグ内の液体の供給が終了したと判断し、チューブポンプの動作を停止し、ユーザに供給バッグ内が空となったことを警報等で知らせるようにしている。 FIG. 4 shows the relationship between the current waveform of the tube pump drive motor and the downstream outer shape change detection sensor output signal when the tube pump operating speed is low, and the downstream outer shape change detection synchronized with the current waveform of the drive motor. When the amount of change in the sensor signal and the amount of change in the current waveform of the drive motor exceed a predetermined threshold, the medical device determines that the supply of the liquid in the supply bag has ended and stops the tube pump operation. In addition, the user is notified by an alarm or the like that the supply bag is empty.
また、詳細は省くが、チューブポンプが低速で動作した場合には、ローラ7の動きに同期して現れる下流側外形変化検知センサの出力信号変化量は、図4に示すように図3の例より小さくなり、モータの電流波形だけでは、変化量が小さ過ぎて、供給バッグ内の液体の供給終了判定が困難となる他、外形変化検知センサの出力信号の変化がモータの電流波形と同期していない場合は、その変化が外乱による可能性が高まるので、供給バッグが空となったと判断する閾値を、チューブポンプの速度が遅い場合には小さく、速い場合には大きく変化させることにより、チューブポンプの広い速度範囲に対応できるようにすることも有効である。
Further, although not described in detail, when the tube pump operates at a low speed, the output signal change amount of the downstream outer shape change detection sensor that appears in synchronization with the movement of the
本発明に成るチューブポンプは、人工透析装置等での供給バッグ内の液体の供給終了検知を、簡便な構成でしかも信頼性を損なうこと無く実現するので、より多くの利用を可能とする。 The tube pump according to the present invention realizes the supply end detection of the liquid in the supply bag in an artificial dialysis machine or the like with a simple configuration and without impairing the reliability, so that it can be used more frequently.
1 供給バッグ
2 人体
3 弾性チューブ
4 上流側外形変化検知センサ
5 下流側外形変化検知センサ
6 チューブポンプ駆動電動機
7 ローラ
8 装置本体
9 ローラ移動方向
10 制御パネル
11 電動機
12 判定回路
DESCRIPTION OF
Claims (1)
ローラ転動押圧の下流側にチューブ外形変化検知センサを備え、該チューブ外形変化検知センサの信号が、供給バッグ内の液体の供給終了検知手段となるように構成され、前記チューブ外形変化検知センサの信号と、駆動電動機の電流波形が、供給バッグ内の液体の供給終了検知手段として利用され、前記チューブ外形変化検知センサの信号と駆動電動機の電流波形との同期した変化が、供給バッグ内の液体の供給終了検知手段となるように構成されていること、を特徴とするチューブポンプ。 A housing having an arcuate inner peripheral surface, a drive motor integrally held in the housing, and a plurality of links that are rotatable about the arcuate inner peripheral surface of the housing, linked to the drive shaft of the drive motor. In the tube pump configured to transfer the liquid in the elastic tube guided and inserted along the arcuate inner peripheral surface of the housing by the rolling pressing of the roller,
A tube outer shape change detection sensor is provided on the downstream side of the roller rolling pressure, and the tube outer shape change detection sensor is configured to be a liquid supply end detection means in the supply bag. The signal and the current waveform of the drive motor are used as liquid supply end detection means in the supply bag, and the synchronized change between the signal of the tube outer shape change detection sensor and the current waveform of the drive motor is the liquid in the supply bag It is comprised so that it may become a supply completion | finish detection means of the tube pump characterized by the above-mentioned.
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JP2007048235A JP4549359B2 (en) | 2007-02-28 | 2007-02-28 | Tube pump |
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JP2007048235A JP4549359B2 (en) | 2007-02-28 | 2007-02-28 | Tube pump |
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JP2008208808A JP2008208808A (en) | 2008-09-11 |
JP4549359B2 true JP4549359B2 (en) | 2010-09-22 |
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Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
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JP5383586B2 (en) * | 2010-05-17 | 2014-01-08 | 日本電産サーボ株式会社 | Tube pump |
JP5358518B2 (en) * | 2010-06-18 | 2013-12-04 | 日本電産サーボ株式会社 | Tube pump |
JP5244896B2 (en) * | 2010-12-03 | 2013-07-24 | Junken Medical株式会社 | Device for blood transfusion / infusion or blood purification and method for detecting defective suction of pump in the device |
JP5469728B1 (en) | 2012-10-19 | 2014-04-16 | 日機装株式会社 | Liquid channel pressure detector |
JP5587958B2 (en) * | 2012-10-19 | 2014-09-10 | 日機装株式会社 | Ironing type pump |
JP6077278B2 (en) * | 2012-11-16 | 2017-02-08 | 日機装株式会社 | Ironing type pump |
JP5863871B2 (en) | 2014-04-15 | 2016-02-17 | 日機装株式会社 | Mounting member and ironing pump |
CN107683151B (en) | 2015-06-24 | 2020-07-28 | 日机装株式会社 | Blood purification device |
JP6430425B2 (en) * | 2016-03-10 | 2018-11-28 | ミネベアミツミ株式会社 | Motor drive control device, motor drive control method, and tube pump |
JP6325050B2 (en) * | 2016-10-21 | 2018-05-16 | 株式会社エヌエスソフト | Tube pump device and control method of tube pump device |
JP6462077B1 (en) | 2017-09-07 | 2019-01-30 | 日機装株式会社 | Blood purification apparatus and method for discharging bubbles |
JP6464238B1 (en) | 2017-09-07 | 2019-02-06 | 日機装株式会社 | Blood purification apparatus and method for discharging bubbles |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0415938U (en) * | 1990-05-30 | 1992-02-10 | ||
JP2000000299A (en) * | 1998-04-13 | 2000-01-07 | Jms Co Ltd | Extracorporeal circulation apparatus having control function |
JP2007044065A (en) * | 2005-08-05 | 2007-02-22 | Terumo Corp | Peritoneal dialysis apparatus, and its control method and control program |
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2007
- 2007-02-28 JP JP2007048235A patent/JP4549359B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH0415938U (en) * | 1990-05-30 | 1992-02-10 | ||
JP2000000299A (en) * | 1998-04-13 | 2000-01-07 | Jms Co Ltd | Extracorporeal circulation apparatus having control function |
JP2007044065A (en) * | 2005-08-05 | 2007-02-22 | Terumo Corp | Peritoneal dialysis apparatus, and its control method and control program |
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JP2008208808A (en) | 2008-09-11 |
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