WO2016076363A1 - Antistatic tool - Google Patents
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- WO2016076363A1 WO2016076363A1 PCT/JP2015/081754 JP2015081754W WO2016076363A1 WO 2016076363 A1 WO2016076363 A1 WO 2016076363A1 JP 2015081754 W JP2015081754 W JP 2015081754W WO 2016076363 A1 WO2016076363 A1 WO 2016076363A1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
- H05F3/00—Carrying-off electrostatic charges
- H05F3/02—Carrying-off electrostatic charges by means of earthing connections
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Abstract
Provided is an antistatic tool capable of successfully and positively dissipating, to the outside, an electric charge of a flow path through which a liquid can flow, and preventing liquid leakage while preventing disconnection of the flow path. The antistatic tool (5) is attached to a flow path through which a liquid can flow, has a predetermined portion that can contact a liquid, and is capable of dissipating an electric charge of the flow path to the outside by contact with a grounding means (E) for electrical grounding. The antistatic tool (5) comprises a conductive material (6) wherein a wettable part (6b) and a grounding part (6c) are integrally formed. The wettable part (6b) is inserted through an insertion hole (L2a) made in the flow path and can contact a liquid, and the grounding part (6c) can be grounded by contact with the grounding means (E) and is capable of dissipating an electric charge of the flow path to the outside.
Description
本発明は、液体が流通し得る流路に取り付けられ、当該流路の液体に帯びた電荷を放散可能とされた帯電防止具に関するものである。
The present invention relates to an antistatic device that is attached to a flow path through which a liquid can flow, and that can dissipate the charge on the liquid in the flow path.
一般に、透析治療を行うための血液浄化装置は、患者の血液を体外循環させるための血液回路を構成する動脈側血液回路及び静脈側血液回路と、血液回路にて体外循環する血液を浄化するための血液浄化器と、血液回路及び血液浄化器にて血液浄化治療させるための血液ポンプ等の種々の治療手段が配設された装置本体とを具備している。動脈側血液回路及び静脈側血液回路の先端には、それぞれ動脈側穿刺針及び静脈側穿刺針が取り付け可能とされている。
In general, a blood purification apparatus for performing dialysis treatment purifies blood circulating extracorporeally in an arterial blood circuit and a venous blood circuit that constitute a blood circuit for circulating a patient's blood extracorporeally. Blood purifier, and a device body on which various treatment means such as a blood pump for blood purification treatment with the blood circuit and the blood purifier are arranged. An arterial puncture needle and a venous puncture needle can be attached to the tips of the arterial blood circuit and the venous blood circuit, respectively.
そして、動脈側穿刺針及び静脈側穿刺針を患者に穿刺した後、血液ポンプを駆動させることにより、患者の患者が動脈側血液回路及び静脈側血液回路を流動することとなり、その流動過程において血液浄化器にて血液浄化されるようになっている。また、透析治療においては、血液浄化器に透析液を導入するための透析液導入チューブと、血液浄化器から透析液を導出するための透析液導出チューブとがそれぞれ血液浄化器に接続されている。
Then, after puncturing the patient with the arterial puncture needle and the venous side puncture needle, the patient's patient flows through the arterial blood circuit and the venous blood circuit by driving the blood pump. Blood is purified by a purifier. In dialysis treatment, a dialysate introduction tube for introducing dialysate into the blood purifier and a dialysate lead-out tube for extracting dialysate from the blood purifier are connected to the blood purifier, respectively. .
ところで、血液ポンプや透析液を血液浄化器に導入又は導出させるためのポンプとして、通常、流体の流通方向にローラが回転してしごくことにより送液させ得るしごき型ポンプが用いられている。かかるしごき型ポンプは、回転するローラによって流路をしごき送液するので、当該しごき部にて静電気が生じてしまい、流路の液体を帯電させ易くなっている。
By the way, as a pump for introducing or leading a blood pump or dialysate to or from a blood purifier, an ironing type pump that can be fed by rotating a roller in the fluid flow direction is usually used. Such an ironing pump pumps the liquid through the flow path with a rotating roller, so that static electricity is generated at the ironing portion, and the liquid in the flow path is easily charged.
しかして、治療中、液体が帯電してしまうと、その電荷を帯びた血液が例えば穿刺針を介して患者に至ってしまい、治療中に得られる患者の心電図等に悪影響を及ぼしてしまう虞がある。このような不具合を回避すべく、従来より、液体の流路に帯電防止具を取り付けて電気的に接地（アース）させることにより、心電図等に対する悪影響を回避するものが提案されている。
Thus, if the liquid is charged during the treatment, the charged blood may reach the patient via, for example, a puncture needle, which may adversely affect the patient's electrocardiogram or the like obtained during the treatment. . In order to avoid such problems, it has been conventionally proposed to avoid an adverse effect on an electrocardiogram or the like by attaching an antistatic tool to the liquid flow path and electrically grounding it.
従来の帯電防止具は、例えば特許文献１にて開示されているように、透析液を流通させ得る一方の可撓性チューブの先端と他方の可撓性チューブの基端とを接続する導電性部材（チューブジョイント）から成り、これら可撓性チューブの接続部を流れる透析液に接液しつつ血液浄化装置側に取り付けられた接地手段（アース手段）と接触することにより、可撓性チューブに生じた電荷を外部に放散可能とされていた。
For example, as disclosed in Patent Document 1, a conventional antistatic tool is a conductive material that connects the distal end of one flexible tube through which dialysate can flow and the proximal end of the other flexible tube. It consists of members (tube joints) and comes into contact with the grounding means (grounding means) attached to the blood purification device side while in contact with the dialysate flowing through the connection part of these flexible tubes. The generated charge could be dissipated to the outside.
しかしながら、上記従来の帯電防止具においては、一方の可撓性チューブの先端と他方の可撓性チューブの基端とを接続する導電性部材から成るので、何れかの可撓性チューブに不用意な力がかかった場合、接続部が外れてしまう虞があるとともに、可撓性チューブを流れる液体（透析液等）が接続部から外部に漏れる可能性が高くなってしまうという問題があった。なお、このような問題は、治療時に血液を流通させ得る血液回路や種々流体を流通させ得る他の流路においても、同様に生じる虞がある。
However, since the conventional antistatic device is composed of a conductive member that connects the distal end of one flexible tube and the proximal end of the other flexible tube, it is inadequate for any flexible tube. When a strong force is applied, there is a possibility that the connecting portion may come off and there is a high possibility that a liquid (such as dialysate) flowing through the flexible tube leaks from the connecting portion to the outside. Such a problem may also occur in a blood circuit that can circulate blood during treatment and other flow paths that can circulate various fluids.
本発明は、このような事情に鑑みてなされたもので、流路の液体に帯びた電荷を良好且つ確実に外部に放散し得るとともに、流路が外れてしまうのを回避しつつ液漏れを抑制することができる帯電防止具を提供することにある。
The present invention has been made in view of such circumstances, and it is possible to dissipate the charge on the liquid in the flow path to the outside in a good and reliable manner, while preventing liquid leakage while avoiding the flow path from coming off. It is providing the antistatic tool which can be suppressed.
請求項１記載の発明は、液体が流通し得る流路に取り付けられ、所定部位が前記液体に接液可能とされるとともに、電気的に接地させる接地手段と接触することにより前記流路の液体に帯びた電荷を外部に放散可能な帯電防止具において、前記流路に形成された挿通孔に挿通されて前記液体に接液可能な接液部と、前記接地手段と接触して接地可能とされ、前記流路の液体に帯びた電荷を外部に放散させ得る接地部とが一体形成された導電性部材を有することを特徴とする。
According to the first aspect of the present invention, the liquid in the flow path is attached to a flow path through which the liquid can circulate, and a predetermined portion can be in contact with the liquid and is in contact with a grounding means for electrically grounding. In the antistatic device capable of dissipating the charged electric charge to the outside, the liquid contact portion that is inserted into the insertion hole formed in the flow path and can come into contact with the liquid, and the grounding means can be grounded. And a conductive member integrally formed with a grounding portion that can dissipate the charge on the liquid in the flow path to the outside.
請求項２記載の発明は、請求項１記載の帯電防止具において、前記流路は、可撓性チューブから成るとともに、液体の流通方向にローラが回転して流路をしごくことにより送液させ得るしごき型ポンプが配設されたことを特徴とする。
According to a second aspect of the present invention, in the antistatic device according to the first aspect, the flow path is made of a flexible tube, and the roller rotates in the flow direction of the liquid so that the liquid is fed by squeezing the flow path. An obtained ironing type pump is provided.
請求項３記載の発明は、請求項１又は請求項２記載の帯電防止具において、前記接液部は、その突端に前記流路の挿通孔より大径とされた大径部を有し、当該大径部にて接液可能とされたことを特徴とする。
The invention according to claim 3 is the antistatic device according to claim 1 or 2, wherein the liquid contact portion has a large diameter portion that is larger in diameter than the insertion hole of the flow path at the protruding end thereof. It is characterized in that liquid contact is possible at the large diameter portion.
請求項４記載の発明は、請求項１～３の何れか１つに記載の帯電防止具において、前記接地部における前記接地手段との接触部は、略平坦な面から成ることを特徴とする。
According to a fourth aspect of the present invention, in the antistatic device according to any one of the first to third aspects, the contact portion of the grounding portion with the grounding means comprises a substantially flat surface. .
請求項５記載の発明は、請求項１～４の何れか１つに記載の帯電防止具において、前記流路の端部を接続可能とされた絶縁部材から成る接続部を有するとともに、当該接続部は、前記導電性部材を合致させて位置決め固定し得る固定部が形成されたことを特徴とする。
According to a fifth aspect of the present invention, in the antistatic device according to any one of the first to fourth aspects of the present invention, the antistatic device has a connection portion made of an insulating member to which an end portion of the flow path can be connected. The portion is characterized in that a fixing portion that can be positioned and fixed by matching the conductive member is formed.
請求項６記載の発明は、請求項５記載の帯電防止具において、前記接続部は、前記流路に接続された任意部品に形成されたことを特徴とする。
According to a sixth aspect of the present invention, in the antistatic device according to the fifth aspect, the connecting portion is formed in an arbitrary part connected to the flow path.
請求項７記載の発明は、請求項１～６の何れか１つに記載の帯電防止具を有することを特徴とする医療用回路である。
A seventh aspect of the invention is a medical circuit comprising the antistatic device according to any one of the first to sixth aspects.
請求項８記載の発明は、請求項１～６の何れか１つに記載の帯電防止具を有することを特徴とする血液浄化装置である。
The invention according to claim 8 is a blood purification apparatus comprising the antistatic device according to any one of claims 1 to 6.
請求項１の発明によれば、流路に形成された挿通孔に挿通されて液体に接液可能な接液部と、接地手段と接触して接地可能とされ、流路の液体に帯びた電荷を外部に放散させ得る接地部とが一体形成された導電性部材を有するので、流路の液体に帯びた電荷を良好且つ確実に外部に放散し得るとともに、導電性部材の取り付け部において流路が外れてしまうのを回避しつつ液漏れを抑制することができる。
According to the first aspect of the present invention, the liquid contact portion that is inserted through the insertion hole formed in the flow path and can come into contact with the liquid, and can be grounded in contact with the grounding means, and is in contact with the liquid in the flow path. Since it has a conductive member integrally formed with a grounding part that can dissipate the electric charge to the outside, the electric charge charged in the liquid in the flow path can be dissipated to the outside in a good and reliable manner, and it can flow at the attaching part of the conductive member. Liquid leakage can be suppressed while avoiding the passage from being removed.
請求項２の発明によれば、流路は、可撓性チューブから成るとともに、液体の流通方向にローラが回転して流路をしごくことにより送液させ得るしごき型ポンプが配設されたので、しごき型ポンプのローラの回転によって流路の液体に帯びた電荷を良好且つ確実に外部に放散することができる。
According to the second aspect of the present invention, the flow path is made of a flexible tube, and the squeezing pump that can feed liquid by squeezing the flow path by rotating the roller in the liquid flow direction is provided. The charge of the liquid in the flow path can be dissipated well and reliably to the outside by the rotation of the roller of the ironing pump.
請求項３の発明によれば、接液部は、その突端に流路の挿通孔より大径とされた大径部を有し、当該大径部にて接液可能とされたので、導電性部材の導電率が低くても、流路の液体に帯びた電荷を良好且つ確実に外部に放散することができる。
According to the invention of claim 3, the liquid contact part has a large diameter part that is larger in diameter than the insertion hole of the flow path at the protruding end, and the liquid contact part can be in contact with the large diameter part. Even if the conductivity of the conductive member is low, the charge on the liquid in the flow path can be dissipated well and reliably to the outside.
請求項４の発明によれば、接地部における接地手段との接触部は、略平坦な面から成るので、接地部と接地手段との接触を面接触として確実に行わせることができ、流路の液体に帯びた電荷をより良好且つ確実に外部に放散することができる。
According to the invention of claim 4, since the contact portion with the grounding means in the grounding portion is formed of a substantially flat surface, the contact between the grounding portion and the grounding means can be reliably performed as surface contact. It is possible to dissipate the charge on the liquid to the outside better and more reliably.
請求項５の発明によれば、流路の端部を接続可能とされた絶縁部材から成る接続部を有するとともに、当該接続部は、導電性部材を合致させて位置決め固定し得る固定部が形成されたので、流路に対して導電性部材を精度よく安定して取り付けることができる。
According to invention of Claim 5, while having the connection part which consists of an insulating member in which the edge part of the flow path was connectable, the said connection part formed the fixing | fixed part which can be positioned and fixed by matching an electroconductive member As a result, the conductive member can be accurately and stably attached to the flow path.
請求項６の発明によれば、接続部は、流路に接続された任意部品に形成されたので、その任意部品の一部に流路を接続させる接続機能と、導電性部材を位置決め固定する固定機能とを兼ね備えることができる。
According to the invention of claim 6, since the connecting portion is formed in an arbitrary part connected to the flow path, the connecting function for connecting the flow path to a part of the optional part, and the conductive member is positioned and fixed. It can have a fixed function.
請求項７の発明によれば、請求項１～６の発明の効果を有した医療用回路を提供することができる。
According to the invention of claim 7, a medical circuit having the effects of the inventions of claims 1 to 6 can be provided.
請求項８の発明によれば、請求項１～６の発明の効果を有した血液浄化装置を提供することができる。
According to the invention of claim 8, it is possible to provide a blood purification apparatus having the effects of the inventions of claims 1 to 6.
以下、本発明の実施形態について図面を参照しながら具体的に説明する。
本実施形態に係る帯電防止具は、液体が流通し得る流路に取り付けられ、当該流路の液体に帯びた電荷を放散可能とされたもので、図１で示す血液浄化装置に適用されたものである。かかる血液浄化装置は、図１～３に示すように、患者の血液を体外循環させつつ浄化するための透析装置に適用されたもので、血液回路１と、血液浄化器としてのダイアライザ２と、モニタＭ（図２、３参照）を具備した透析装置本体Ａとを有して構成されている。 Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
The antistatic device according to the present embodiment is attached to a flow channel through which a liquid can flow, and is capable of dissipating electric charges on the liquid in the flow channel, and is applied to the blood purification apparatus shown in FIG. Is. As shown in FIGS. 1 to 3, such a blood purification apparatus is applied to a dialysis apparatus for purifying a patient's blood while circulating it outside the body, and includes a blood circuit 1, adialyzer 2 as a blood purifier, And a dialysis machine main body A equipped with a monitor M (see FIGS. 2 and 3).
本実施形態に係る帯電防止具は、液体が流通し得る流路に取り付けられ、当該流路の液体に帯びた電荷を放散可能とされたもので、図１で示す血液浄化装置に適用されたものである。かかる血液浄化装置は、図１～３に示すように、患者の血液を体外循環させつつ浄化するための透析装置に適用されたもので、血液回路１と、血液浄化器としてのダイアライザ２と、モニタＭ（図２、３参照）を具備した透析装置本体Ａとを有して構成されている。 Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
The antistatic device according to the present embodiment is attached to a flow channel through which a liquid can flow, and is capable of dissipating electric charges on the liquid in the flow channel, and is applied to the blood purification apparatus shown in FIG. Is. As shown in FIGS. 1 to 3, such a blood purification apparatus is applied to a dialysis apparatus for purifying a patient's blood while circulating it outside the body, and includes a blood circuit 1, a
ダイアライザ２は、微小孔（ポア）が形成された複数の中空糸を筐体部に収容して成るものであり、その筐体部に、血液導入ポート２ａ、血液導出ポート２ｂ、透析液導入ポート２ｃ及び透析液導出ポート２ｄが形成されている。また、血液回路１は、先端に動脈側穿刺針が取り付け可能とされた動脈側血液回路１ａと、先端に静脈側穿刺針が取り付け可能とされた静脈側血液回路１ｂとを有した可撓性チューブから構成されたもので、動脈側血液回路１ａの基端がダイアライザ２の血液導入ポート２ａに接続されるとともに、静脈側血液回路１ｂの基端がダイアライザ２の血液導出ポート２ｂに接続されている。
The dialyzer 2 is formed by housing a plurality of hollow fibers in which micropores (pores) are formed in a casing portion, and the blood inlet port 2a, blood outlet port 2b, dialysate inlet port are provided in the casing portion. 2c and dialysate outlet port 2d are formed. In addition, the blood circuit 1 is a flexible circuit having an arterial blood circuit 1a in which an arterial puncture needle can be attached to the distal end and a venous blood circuit 1b in which a venous puncture needle can be attached to the distal end. It is composed of a tube, and the proximal end of the arterial blood circuit 1a is connected to the blood introduction port 2a of the dialyzer 2, and the proximal end of the venous blood circuit 1b is connected to the blood outlet port 2b of the dialyzer 2. Yes.
さらに、本透析装置には、ダイアライザ２に透析液を導入する透析液導入チューブＬ１と、ダイアライザ２から透析液（排液）を導出する透析液導出チューブＬ２とを取り付け可能とされており、透析液導入チューブＬ１の先端がダイアライザ２の透析液導入ポート２ｃに接続されるとともに、透析液導出チューブＬ２の先端がダイアライザ２の透析液導出ポート２ｄに接続されている。また、本実施形態においては、透析液導入チューブＬ１と静脈側血液回路１ｂとを接続する補液導入チューブＬ３が形成されている。なお、血液回路１を構成する動脈側血液回路１ａ及び静脈側血液回路１ｂ、透析液導入チューブＬ１、透析液導出チューブＬ２並びに補液導入チューブＬ３は、何れも液体が流通し得る可撓性チューブから成るものである。
Furthermore, this dialyzer can be attached with a dialysate introduction tube L1 for introducing dialysate into the dialyzer 2 and a dialysate lead-out tube L2 for extracting dialysate (drainage) from the dialyzer 2. The tip of the liquid introduction tube L1 is connected to the dialysate introduction port 2c of the dialyzer 2, and the tip of the dialysate lead-out tube L2 is connected to the dialysate lead-out port 2d of the dialyzer 2. In the present embodiment, a replacement fluid introduction tube L3 that connects the dialysate introduction tube L1 and the venous blood circuit 1b is formed. The arterial blood circuit 1a and the venous blood circuit 1b, the dialysate introduction tube L1, the dialysate lead-out tube L2, and the replacement fluid introduction tube L3 constituting the blood circuit 1 are all flexible tubes through which fluid can flow. It consists of.
またさらに、動脈側血液回路１ａの途中には、血液ポンプＰ１が配設されている。かかる血液ポンプＰ１は、ケースＣが取り付けられる部位（図３参照）に配設されたもので、図４に示すように、ステータＳの内周面Ｓａ内で回転するロータＲと、ロータＲに形成された一対のローラＲａとを具備して構成されており、液体の流通方向にロータＲが回転して動脈側血液回路１ａに接続された被しごき用可撓性チューブＤ１を一対のローラＲａがそれぞれしごくことにより送液可能とされたしごき型ポンプから成る。
Furthermore, a blood pump P1 is disposed in the middle of the arterial blood circuit 1a. The blood pump P1 is disposed at a portion (see FIG. 3) to which the case C is attached. As shown in FIG. 4, the rotor R that rotates within the inner peripheral surface Sa of the stator S and the rotor R A pair of rollers Ra formed, and a flexible tube D1 for ironing connected to the arterial blood circuit 1a by rotating the rotor R in the direction of fluid flow. Each consists of a peristaltic pump that can be pumped by squeezing.
また、図１、３に示すように、被しごき用可撓性チューブＤ２は、透析液導入チューブＬ１の途中に接続されるとともに、被しごき用可撓性チューブＤ３は、補液導入チューブＬ３の途中に接続され、本透析装置に配設されたしごき型ポンプＰ２、Ｐ３にそれぞれ取り付けられる。さらに、被しごき用可撓性チューブＤ４は、透析液導出チューブＬ２の途中に接続され、本透析装置に配設されたしごき型ポンプＰ４に取り付けられる。なお、被しごき用可撓性チューブＤ５は、しごき型ポンプＰ５に取り付けられ、重量計４で重量測定後に駆動によって収容バッグＢ２に溜まった液を系外に排出するものである。
As shown in FIGS. 1 and 3, the ironing flexible tube D2 is connected in the middle of the dialysate introduction tube L1, and the ironing flexible tube D3 is in the middle of the replacement fluid introduction tube L3. And are attached to ironing type pumps P2 and P3 provided in the dialysis machine, respectively. Furthermore, the ironing flexible tube D4 is connected to the dialysate outlet tube L2 and attached to the ironing pump P4 provided in the dialysis machine. The ironing flexible tube D5 is attached to the ironing pump P5, and discharges the liquid accumulated in the storage bag B2 by driving after measuring the weight by the weight meter 4.
しごき型ポンプＰ２～Ｐ５は、血液ポンプＰ１と同様、ケースＣが取り付けられる部位（図３参照）に配設されたもので、ステータの内周面内で回転するロータと、ロータに形成された一対のローラとを具備して構成されており、液体の流通方向にロータが回転して流路に接続された被しごき用可撓性チューブ（Ｄ２～Ｄ５）を一対のローラがそれぞれしごくことにより送液可能とされたものである。なお、しごき型ポンプＰ２～Ｐ５の具体的な構成については、血液ポンプＰ１と同様であるため、詳細な説明を省略する。
Like the blood pump P1, the squeeze type pumps P2 to P5 are disposed at a portion (see FIG. 3) to which the case C is attached, and are formed on the rotor that rotates within the inner peripheral surface of the stator and the rotor. A pair of rollers, and the rotor rotates in the liquid flow direction and the pair of rollers respectively squeeze the flexible tubes (D2 to D5) connected to the flow path. The liquid can be sent. The specific configuration of the ironing pumps P2 to P5 is the same as that of the blood pump P1, and detailed description thereof is omitted.
このように、本透析装置には、血液ポンプＰ１及びしごき型ポンプ（Ｐ２～Ｐ５）が配設されるとともに、ケースＣには、各流路が接続された状態の被しごき用可撓性チューブ（Ｄ１～Ｄ５）が形成されており、本透析装置にケースＣを取り付けると、被しごき用可撓性チューブＤ１が血液ポンプＰ１に対してセット状態とされるとともに、被しごき用可撓性チューブ（Ｄ２～Ｄ５）がしごき型ポンプＰ２～Ｐ５に対してそれぞれセット状態とされるようになっている。
As described above, the present dialysis apparatus is provided with the blood pump P1 and the ironing type pumps (P2 to P5), and the case C is a flexible tube for ironing in which each flow path is connected. (D1 to D5) are formed, and when the case C is attached to the dialyzer, the ironing flexible tube D1 is set to the blood pump P1, and the ironing flexible tube (D2 to D5) are set to the ironing type pumps P2 to P5, respectively.
しかして、ケースＣを本透析装置における血液ポンプＰ１及びしごき型ポンプＰ２～Ｐ５が配設された部位（ステータ）に嵌合して取り付け（図２、３参照）、カバーＨを閉じることにより、被しごき用可撓性チューブ（Ｄ１～Ｄ５）が血液ポンプＰ１及びしごき型ポンプ（Ｐ２～Ｐ５）に一括して取り付けられるようになっている。そして、動脈側穿刺針及び静脈側穿刺針を患者に穿刺した後、血液ポンプＰ１（血液ポンプ）を駆動させると、動脈側血液回路１ａ及び静脈側血液回路１ｂにおいて患者の血液を体外循環させ得るようになっている。
Then, the case C is fitted and attached to a portion (stator) where the blood pump P1 and the ironing pumps P2 to P5 in the dialysis apparatus are disposed (see FIGS. 2 and 3), and the cover H is closed, The ironing flexible tubes (D1 to D5) are collectively attached to the blood pump P1 and the ironing pumps (P2 to P5). When the blood pump P1 (blood pump) is driven after puncturing the patient with the arterial puncture needle and the venous side puncture needle, the patient's blood can be circulated extracorporeally in the arterial blood circuit 1a and the venous blood circuit 1b. It is like that.
一方、透析液導入チューブＬ１の基端には、ダイアライザ２に供給するための透析液を収容した収容バッグＢ１が接続されるとともに、透析液導出チューブＬ２の基端には、ダイアライザ２から排出された透析液（排液）を収容する収容バッグＢ２が接続されるようになっている。なお、透析液導入チューブＬ１の途中には、透析液を加温するための加温バッグ（不図示）等が接続されており、収容バッグＢ２には、しごき型ポンプＰ５にて送液可能な可撓性チューブ（不図示）が接続されている。
On the other hand, a storage bag B1 containing dialysate to be supplied to the dialyzer 2 is connected to the base end of the dialysate introduction tube L1, and discharged from the dialyzer 2 to the base end of the dialysate lead-out tube L2. A storage bag B2 for storing the dialysate (drainage) is connected. In the middle of the dialysate introduction tube L1, a heating bag (not shown) for heating the dialysate is connected, and the accommodation bag B2 can be fed with an ironing pump P5. A flexible tube (not shown) is connected.
そして、しごき型ポンプＰ２を駆動させると、収容バッグＢ１の透析液がダイアライザ２に向かって流れるとともに、しごき型ポンプＰ４を駆動させると、ダイアライザ２の透析液（排液）が収容バッグＢ２に向かって流れることとなる。収容バッグＢ１、Ｂ２は、本透析装置に形成されたフックＦにそれぞれ引っ掛けられるとともに、重量計３、４にてリアルタイムに重量が計測されるよう構成されている。これにより、設定された流量にて透析液をダイアライザ２に供給し、当該ダイアライザ２から透析液を排出させることができる。
When the peristaltic pump P2 is driven, the dialysate in the storage bag B1 flows toward the dialyzer 2, and when the peristaltic pump P4 is driven, the dialysate (drainage) in the dialyzer 2 is directed toward the storage bag B2. Will flow. The storage bags B1 and B2 are configured to be respectively hooked on hooks F formed in the dialysis apparatus, and weights are measured in real time by weighing scales 3 and 4. Thereby, the dialysate can be supplied to the dialyzer 2 at the set flow rate, and the dialysate can be discharged from the dialyzer 2.
なお、本実施形態においては、透析液導入チューブＬ１から分岐した補液導入チューブＬ３に被しごき用可撓性チューブＤ３が接続されており、この被しごき用可撓性チューブＤ３がしごき型ポンプＰ３に取り付けられている。そして、しごき型ポンプＰ２、Ｐ３を駆動させることにより、収容バッグＢ１の透析液を静脈側血液回路１ｂに供給して補液することができるようになっている。補液導入チューブＬ３の先端を動脈側血液回路１ａに接続し、当該動脈側血液回路１ａに透析液を供給して補液するようにしてもよい。
In the present embodiment, the ironing flexible tube D3 is connected to the replacement fluid introducing tube L3 branched from the dialysate introducing tube L1, and the ironing flexible tube D3 is connected to the ironing pump P3. It is attached. Then, by driving the ironing pumps P2 and P3, the dialysate in the storage bag B1 can be supplied to the venous blood circuit 1b to be replenished. The tip of the replacement fluid introduction tube L3 may be connected to the arterial blood circuit 1a, and the dialysate may be supplied to the arterial blood circuit 1a for replacement.
ここで、血液ポンプＰ１やしごき型ポンプＰ２～Ｐ５を駆動させると、そのローラが被しごき用可撓性チューブ（Ｄ１～Ｄ５）を逐次しごくこととなるので、そのしごきによって流路に静電気が生じて帯電しまうことから、本実施形態においては、当該帯電に伴う電荷を外部に放散（接地）すべく、透析液導出チューブＬ２の途中（ダイアライザ２としごき型ポンプＰ４との間）に帯電防止具５が接続されている。
Here, when the blood pump P1 and the ironing pumps P2 to P5 are driven, the rollers sequentially iron the flexible tubes (D1 to D5) to be ironed, so that static electricity is generated in the flow path by the ironing. Therefore, in this embodiment, in order to dissipate (ground) the electric charge accompanying the charging to the outside, an antistatic tool is provided in the middle of the dialysate outlet tube L2 (between the dialyzer 2 and the ironing pump P4). 5 is connected.
第１の実施形態に係る帯電防止具５は、透析液（導電性の液体）が流通し得る流路（透析液導出チューブＬ２）に取り付けられ、所定部位が透析液に接液可能とされるとともに、電気的に接地させる接地手段（アース手段）と接触することにより流路の液体に帯びた電荷を外部に放散可能なもので、図５～１０に示すように、略円筒状に形成された導電性部材６にて構成されている。
The antistatic tool 5 according to the first embodiment is attached to a flow path (dialysis fluid lead-out tube L2) through which dialysate (conductive liquid) can flow, and a predetermined part can be in contact with the dialysate. At the same time, it is possible to dissipate the electric charge charged in the liquid in the flow path to the outside by making contact with a grounding means (grounding means) for electrical grounding, and it is formed in a substantially cylindrical shape as shown in FIGS. The conductive member 6 is used.
より具体的には、本実施形態に係る帯電防止具５は、例えばカーボンナノチューブを含有するポリカーボネート又はカーボンブラックを含有するポリ塩化ビニル等、可撓性チューブと接着や熱溶着が容易な導電材料を射出成形等することにより得られるもので、貫通孔６ａと、接液部６ｂと、接地部６ｃとが一体形成された導電性部材６を有して構成されている。なお、導電性部材６は、その表面抵抗が１０２～１０１２Ω程度のものが好ましい。また、本実施形態に係る接地部６ｃは、略円筒状に形成されているが、略平坦な形状等、他の形状であってもよい。
More specifically, the antistatic device 5 according to the present embodiment is made of a conductive material that can be easily bonded and thermally welded to a flexible tube, such as polycarbonate containing carbon nanotubes or polyvinyl chloride containing carbon black. It is obtained by injection molding or the like, and has a conductive member 6 in which a through hole 6a, a liquid contact part 6b, and a grounding part 6c are integrally formed. The conductive member 6 preferably has a surface resistance of about 10 2 to 10 12 Ω. Moreover, although the grounding part 6c which concerns on this embodiment is formed in the substantially cylindrical shape, other shapes, such as a substantially flat shape, may be sufficient.
貫通孔６ａは、導電性部材６の中央を長手方向に延びて形成された孔から成り、その内径が取り付ける流路（透析液導出チューブＬ２）の外径と略等しく設定されているとともに、内周面における所定位置には、突起状に形成された接液部６ｂが形成されている。この接液部６ｂは、透析液導出チューブＬ２の所定位置に形成された挿通孔Ｌ２ａに挿通されて透析液（透析液導出チューブＬ２を流通する液体）に接液可能な部位から成る。
The through-hole 6a is a hole formed by extending the center of the conductive member 6 in the longitudinal direction, and its inner diameter is set to be substantially equal to the outer diameter of the flow path (dialysate outlet tube L2) to be attached. A liquid contact portion 6b formed in a protruding shape is formed at a predetermined position on the peripheral surface. The liquid contact portion 6b is formed of a portion that can be inserted into an insertion hole L2a formed at a predetermined position of the dialysate outlet tube L2 and contact the dialysate (liquid flowing through the dialysate outlet tube L2).
挿通孔Ｌ２ａは、透析液導出チューブＬ２の途中に形成され、液体の流路を外部に臨ませた円形状の開口から成る。また、接液部６ｂの外径は、挿通孔Ｌ２ａの内径より若干大きく設定されており、当該接液部６ｂを挿通孔Ｌ２ａに圧入させつつ貫通孔６ａの内周面と透析液導出チューブＬ２の外周面とを接着させることにより、導電性部材６を透析液導出チューブＬ２に取り付けるようになっている。なお、挿通孔Ｌ２ａの開口形状及び接液部６ｂの断面形状は、円形に限定されるものではなく、例えば楕円形や矩形等であってもよい。
The insertion hole L2a is formed in the middle of the dialysate outlet tube L2, and is formed of a circular opening that faces the liquid flow path to the outside. The outer diameter of the liquid contact portion 6b is set to be slightly larger than the inner diameter of the insertion hole L2a, and the inner peripheral surface of the through hole 6a and the dialysate outlet tube L2 while the liquid contact portion 6b is press-fitted into the insertion hole L2a. The conductive member 6 is attached to the dialysate outlet tube L2 by adhering to the outer peripheral surface of the dialysate. The opening shape of the insertion hole L2a and the cross-sectional shape of the liquid contact part 6b are not limited to a circle, and may be, for example, an ellipse or a rectangle.
このように、挿通孔Ｌ２に接液部６ｂを挿通させつつ導電性部材６を透析液導出チューブＬ２に取り付けた状態とすることにより、図１０に示すように、接液部６ｂの先端を透析液導出チューブＬ２の内部に臨ませることができ、透析液導出チューブＬ２を流れる液体（透析液を含む排液）に接液することとなる。なお、接液部６ｂが挿通孔Ｌ２に圧入され、且つ、貫通孔６ａの内周面と透析液導出チューブＬ２の外周面とが接着されているので、透析液導出チューブＬ２内を流通する液体が挿通孔Ｌ２ａを介して外部に漏れてしまうのを抑制することができる。
In this way, the conductive member 6 is attached to the dialysate outlet tube L2 while the wetted part 6b is inserted through the insertion hole L2, so that the tip of the wetted part 6b is dialyzed as shown in FIG. The liquid can be exposed to the inside of the liquid outlet tube L2, and comes into contact with the liquid flowing through the dialysate outlet tube L2 (drainage liquid including the dialysate). Since the liquid contact portion 6b is press-fitted into the insertion hole L2, and the inner peripheral surface of the through hole 6a and the outer peripheral surface of the dialysate outlet tube L2 are bonded, the liquid flowing through the dialysate outlet tube L2 Can be prevented from leaking outside through the insertion hole L2a.
接地部６ｃは、導電性部材６の外周面の一部から成り、カバーＨに取り付けられた接地手段Ｅ（図２参照）と接触して接地可能とされ、透析液導出チューブＬ２及びそれに接続された流路の液体に帯びた電荷を外部に放散させ得るものである。本実施形態に係る接地手段Ｅは、本透析装置に取り付けられたカバーＨに形成されたもので、カバーＨを閉じた状態において、導電性部材６の外周面の一部である接地部６ｃと接触することにより、接地（アース）し得るよう構成されている。
The grounding portion 6c is composed of a part of the outer peripheral surface of the conductive member 6, and can be grounded in contact with the grounding means E (see FIG. 2) attached to the cover H, and is connected to the dialysate outlet tube L2 and to it. It is possible to dissipate the charge on the liquid in the flow path to the outside. The grounding means E according to the present embodiment is formed on a cover H attached to the dialysis apparatus. When the cover H is closed, the grounding means 6c, which is a part of the outer peripheral surface of the conductive member 6, It is comprised so that it can earth | ground (earth) by contacting.
すなわち、カバーＨを閉じることにより、被しごき用可撓性チューブ（Ｄ１～Ｄ５）が血液ポンプＰ１及びしごき型ポンプ（Ｐ２～Ｐ５）に一括して取り付けられるとともに、接地手段Ｅが導電性部材６の接地部６ｃと接触するので、透析液導出チューブＬ２及びそれに接続された流路の液体に帯びた電荷を外部に放散することができるのである。これにより、血液ポンプＰ１及びしごき型ポンプ（Ｐ２～Ｐ５）に対する被しごき用可撓性チューブ（Ｄ１～Ｄ５）の取り付け作業と、透析液導出チューブＬ２及びそれに接続された流路のアース作業とを同時に行わせることができ、作業性を向上させることができる。
That is, by closing the cover H, the ironing flexible tubes (D1 to D5) are collectively attached to the blood pump P1 and the ironing pumps (P2 to P5), and the grounding means E is connected to the conductive member 6. Therefore, the charge on the dialysate outlet tube L2 and the liquid in the channel connected to the dialysate outlet tube L2 can be dissipated to the outside. As a result, the attachment work of the ironing flexible tubes (D1 to D5) to the blood pump P1 and the ironing pumps (P2 to P5) and the earthing work of the dialysate outlet tube L2 and the flow path connected thereto are performed. It can be performed simultaneously, and workability can be improved.
なお、上記実施形態においては、帯電防止具５が透析液導出チューブＬ２の途中に取り付けられているが、他の流路（動脈側血液回路１ａ、静脈側血液回路１ｂ、透析液導入チューブＬ１、補液導入チューブＬ３等）の途中に取り付けるようにしてもよい。但し、帯電防止具５の取り付け位置は、静電気に伴って生じた電荷を効率よく外部に放散するために、血液ポンプＰ１やしごき型ポンプ（Ｐ２～Ｐ５）が配設された位置の間とするのが好ましい。また、帯電防止具５の取り付け位置には、挿通孔Ｌ２ａの如き接液部６ｂを挿通し得る挿通孔を形成する必要がある。
In the above embodiment, the antistatic device 5 is attached in the middle of the dialysate outlet tube L2, but other flow paths (arterial blood circuit 1a, venous side blood circuit 1b, dialysate introduction tube L1, It may be attached in the middle of the replacement fluid introduction tube L3 or the like. However, the mounting position of the antistatic device 5 is between the positions where the blood pump P1 and the ironing pumps (P2 to P5) are disposed in order to efficiently dissipate the electric charge generated due to static electricity to the outside. Is preferred. Moreover, it is necessary to form the insertion hole which can penetrate the liquid-contact part 6b like the insertion hole L2a in the attachment position of the antistatic tool 5. FIG.
本実施形態によれば、透析液導出チューブＬ２に形成された挿通孔Ｌ２ａに挿通されて液体に接液可能な接液部６ｂと、接地手段Ｅと接触して接地可能とされ、流路の液体に帯びた電荷を外部に放散させ得る接地部６ｃとが一体形成された導電性部材６を有するので、流路の液体に帯びた電荷を良好且つ確実に外部に放散し得るとともに、導電性部材６の取り付け部において流路が外れてしまうのを回避しつつ液漏れを抑制することができる。
According to the present embodiment, the liquid contact portion 6b that is inserted into the insertion hole L2a formed in the dialysate outlet tube L2 and can come into contact with the liquid, and the grounding means E can be grounded. Since it has the conductive member 6 integrally formed with the grounding portion 6c capable of dissipating the charge charged in the liquid to the outside, the charge charged in the liquid in the flow path can be dissipated well and surely to the outside, and the conductivity Liquid leakage can be suppressed while avoiding the flow path from being detached at the attachment portion of the member 6.
また、導電性部材６が取り付けられる流路は、可撓性チューブから成るとともに、液体の流通方向にローラが回転して流路をしごくことにより送液させ得るしごき型ポンプＰ２が配設されたので、しごき型ポンプＰ２のローラの回転によって流路の液体に帯びた電荷を良好且つ確実に外部に放散することができる。これにより、治療時に並行して得られる患者の心電図にノイズが入り込んでしまう等の悪影響を抑制することができる。
The flow path to which the conductive member 6 is attached is formed of a flexible tube, and a squeezing pump P2 that can feed liquid by squeezing the flow path by rotating a roller in the liquid flow direction is disposed. Therefore, the charge on the liquid in the flow path can be dissipated well and reliably to the outside by the rotation of the roller of the ironing pump P2. Thereby, adverse effects such as noise entering the patient's electrocardiogram obtained in parallel with the treatment can be suppressed.
次に、本発明に係る第２の実施形態について説明する。
本実施形態に係る帯電防止具は、第１の実施形態と同様、透析液（導電性の液体）が流通し得る流路（透析液導出チューブＬ２）に取り付けられ、所定部位が透析液に接液可能とされるとともに、電気的に接地させる接地手段（アース手段）と接触することにより流路の液体に帯びた電荷を外部に放散可能なもので、図１１～１５に示すように、円筒形状を半割状にした半割形状の導電性部材７にて構成されている。 Next, a second embodiment according to the present invention will be described.
Similar to the first embodiment, the antistatic device according to this embodiment is attached to a flow path (dialysate outlet tube L2) through which dialysate (conductive liquid) can flow, and a predetermined portion is in contact with the dialysate. The liquid can be dissipated to the outside by making contact with a grounding means (grounding means) that is electrically grounded, and can be dissipated to the outside. As shown in FIGS. It is composed of a half-shapedconductive member 7 whose shape is halved.
本実施形態に係る帯電防止具は、第１の実施形態と同様、透析液（導電性の液体）が流通し得る流路（透析液導出チューブＬ２）に取り付けられ、所定部位が透析液に接液可能とされるとともに、電気的に接地させる接地手段（アース手段）と接触することにより流路の液体に帯びた電荷を外部に放散可能なもので、図１１～１５に示すように、円筒形状を半割状にした半割形状の導電性部材７にて構成されている。 Next, a second embodiment according to the present invention will be described.
Similar to the first embodiment, the antistatic device according to this embodiment is attached to a flow path (dialysate outlet tube L2) through which dialysate (conductive liquid) can flow, and a predetermined portion is in contact with the dialysate. The liquid can be dissipated to the outside by making contact with a grounding means (grounding means) that is electrically grounded, and can be dissipated to the outside. As shown in FIGS. It is composed of a half-shaped
より具体的には、本実施形態に係る帯電防止具は、例えばカーボンナノチューブを含有するポリカーボネート又はカーボンブラックを含有するポリ塩化ビニル等、可撓性チューブと接着や熱溶着が容易な導電材料を成形等することにより得られるもので、内周面７ａと、接液部７ｂと、接地部７ｃとが一体形成された導電性部材７を有して構成されている。なお、導電性部材７は、第１の実施形態と同様、その表面抵抗が１０２～１０１２Ω程度のものが好ましい。
More specifically, the antistatic device according to the present embodiment is formed of a conductive material that can be easily bonded or thermally welded to a flexible tube, such as polycarbonate containing carbon nanotubes or polyvinyl chloride containing carbon black. In other words, the conductive member 7 is formed by integrally forming an inner peripheral surface 7a, a liquid contact portion 7b, and a grounding portion 7c. The conductive member 7 preferably has a surface resistance of about 10 2 to 10 12 Ω, as in the first embodiment.
内周面７ａは、円弧状の面から成り、取り付ける流路（透析液導出チューブＬ２）の外周面に倣った形状とされているとともに、所定位置には、突起状に形成された接液部７ｂが形成されている。この接液部７ｂは、透析液導出チューブＬ２の所定位置に形成された挿通孔Ｌ２ａに挿通されて透析液（透析液導出チューブＬ２を流通する液体）に接液可能な部位から成る。特に、本実施形態に係る接液部７ｂは、その突端に挿通孔Ｌ２ａより大径とされた大径部７ｂａを有しており、当該大径部７ｂａにて接液可能とされている。
The inner peripheral surface 7a is formed of an arc-shaped surface, has a shape that follows the outer peripheral surface of the flow path to be attached (dialysate outlet tube L2), and has a liquid contact portion that is formed in a protruding shape at a predetermined position. 7b is formed. The liquid contact portion 7b is formed of a portion that can be inserted into an insertion hole L2a formed at a predetermined position of the dialysate outlet tube L2 and contact the dialysate (liquid flowing through the dialysate outlet tube L2). In particular, the liquid contact portion 7b according to the present embodiment has a large diameter portion 7ba having a diameter larger than that of the insertion hole L2a at the projecting end, and the liquid contact portion 7b can be in contact with the large diameter portion 7ba.
また、接液部７ｂの大径部７ｂａ以外の外径は、挿通孔Ｌ２ａの内径と略同一寸法とされており、透析液導出チューブＬ２を成形する際、導電性部材７も同時に成形することにより、図１５で示すように、接液部７ｂの大径部７ｂａ以外の部位が挿通孔Ｌ２ａ内に位置し、且つ、大径部７ｂａが透析液導出チューブＬ２の内周面上に位置しつつ接地部７ｃが透析液導出チューブＬ２の外周面上に位置して導電性部材７が形成されることとなる。
Further, the outer diameter of the liquid contact portion 7b other than the large diameter portion 7ba is substantially the same as the inner diameter of the insertion hole L2a, and when the dialysate outlet tube L2 is formed, the conductive member 7 is also formed at the same time. Accordingly, as shown in FIG. 15, the portion other than the large diameter portion 7ba of the liquid contact portion 7b is located in the insertion hole L2a, and the large diameter portion 7ba is located on the inner peripheral surface of the dialysate outlet tube L2. On the other hand, the grounding portion 7c is positioned on the outer peripheral surface of the dialysate outlet tube L2, and the conductive member 7 is formed.
接地部７ｃは、導電性部材７の外周面の一部から成り、カバーＨに取り付けられた接地手段Ｅ（図２参照）と接触して接地可能とされ、透析液導出チューブＬ２及びそれに接続された流路の液体に帯びた電荷を外部に放散させ得るものである。すなわち、第１の実施形態と同様、カバーＨを閉じることにより、被しごき用可撓性チューブ（Ｄ１～Ｄ５）が血液ポンプＰ１及びしごき型ポンプ（Ｐ２～Ｐ５）に一括して取り付けられるとともに、接地手段Ｅが導電性部材７の接地部７ｃと接触するので、透析液導出チューブＬ２及びそれに接続された流路の液体に帯びた電荷を外部に放散することができるのである。
The grounding portion 7c is composed of a part of the outer peripheral surface of the conductive member 7, and can be grounded by contacting with the grounding means E (see FIG. 2) attached to the cover H, and is connected to the dialysate outlet tube L2 and to it. It is possible to dissipate the charge on the liquid in the flow path to the outside. That is, as in the first embodiment, by closing the cover H, the flexible tubes (D1 to D5) for ironing are collectively attached to the blood pump P1 and the ironing pumps (P2 to P5), Since the grounding means E comes into contact with the grounding portion 7c of the conductive member 7, the charge on the dialysate outlet tube L2 and the liquid in the flow path connected thereto can be dissipated to the outside.
本実施形態によれば、接液部７ｂは、その突端に流路（透析液導出チューブＬ２）の挿通孔Ｌ２ａより大径とされた大径部７ｂａを有し、当該大径部７ｂａにて接液可能とされたので、例えば汎用の金属等から成る導電性部材の導電率が低くても、流路の液体に帯びた電荷を良好且つ確実に外部に放散することができる。また、導電性部材７が取り付けられる流路は、可撓性チューブから成るとともに、液体の流通方向にローラが回転して流路をしごくことにより送液させ得るしごき型ポンプＰ２が配設されたので、しごき型ポンプＰ２のローラの回転によって流路の液体に帯びた電荷を良好且つ確実に外部に放散することができる。これにより、治療時に並行して得られる患者の心電図にノイズが入り込んでしまう等の悪影響を抑制することができる。
According to the present embodiment, the liquid contact portion 7b has a large diameter portion 7ba having a diameter larger than the insertion hole L2a of the flow path (dialysate outlet tube L2) at the protruding end, and the large diameter portion 7ba Since the liquid contact is possible, for example, even if the conductivity of the conductive member made of a general-purpose metal or the like is low, the charge on the liquid in the channel can be dissipated well and surely to the outside. The flow path to which the conductive member 7 is attached is made of a flexible tube, and a squeezing pump P2 that can feed liquid by squeezing the flow path by rotating a roller in the liquid flow direction is disposed. Therefore, the charge on the liquid in the flow path can be dissipated well and reliably to the outside by the rotation of the roller of the ironing pump P2. Thereby, adverse effects such as noise entering the patient's electrocardiogram obtained in parallel with the treatment can be suppressed.
次に、本発明に係る第３の実施形態について説明する。
本実施形態に係る帯電防止具は、第１、２の実施形態と同様、透析液（導電性の液体）が流通し得る流路（透析液導出チューブＬ２）に取り付けられ、所定部位が透析液に接液可能とされるとともに、電気的に接地させる接地手段（アース手段）と接触することにより流路の液体に帯びた電荷を外部に放散可能なもので、図１６～２３に示すように、透析液導出チューブＬ２の端部を接続可能とされた絶縁部材（例えば樹脂等）から成る接続部８ｂを有するとともに、当該接続部８ｂは、導電性部材９を合致させて位置決め固定し得る固定部８ｂａが形成されている。なお、導電性部材９及びその周辺構成部は、圧力モニタチャンバ８への液体の流入側に限らず、流出側へ設置してもよい。 Next, a third embodiment according to the present invention will be described.
As in the first and second embodiments, the antistatic device according to this embodiment is attached to a flow path (dialysate outlet tube L2) through which dialysate (conductive liquid) can flow, and the predetermined portion is dialysate. As shown in FIGS. 16 to 23, the liquid can be dissipated to the outside by contact with a grounding means (grounding means) that is electrically grounded. The connectingportion 8b is made of an insulating member (for example, resin) that can be connected to the end of the dialysate outlet tube L2, and the connecting portion 8b is fixed so that the conductive member 9 can be aligned and fixed. A portion 8ba is formed. The conductive member 9 and its peripheral components are not limited to the liquid inflow side to the pressure monitor chamber 8 and may be installed on the outflow side.
本実施形態に係る帯電防止具は、第１、２の実施形態と同様、透析液（導電性の液体）が流通し得る流路（透析液導出チューブＬ２）に取り付けられ、所定部位が透析液に接液可能とされるとともに、電気的に接地させる接地手段（アース手段）と接触することにより流路の液体に帯びた電荷を外部に放散可能なもので、図１６～２３に示すように、透析液導出チューブＬ２の端部を接続可能とされた絶縁部材（例えば樹脂等）から成る接続部８ｂを有するとともに、当該接続部８ｂは、導電性部材９を合致させて位置決め固定し得る固定部８ｂａが形成されている。なお、導電性部材９及びその周辺構成部は、圧力モニタチャンバ８への液体の流入側に限らず、流出側へ設置してもよい。 Next, a third embodiment according to the present invention will be described.
As in the first and second embodiments, the antistatic device according to this embodiment is attached to a flow path (dialysate outlet tube L2) through which dialysate (conductive liquid) can flow, and the predetermined portion is dialysate. As shown in FIGS. 16 to 23, the liquid can be dissipated to the outside by contact with a grounding means (grounding means) that is electrically grounded. The connecting
接続部８ｂは、透析液導出チューブＬ２に接続された圧力モニタチャンバ８（任意部品）に形成された流出口から成る。かかる圧力モニタチャンバ８は、液体をチャンバ部８ｃの内部に流入させる流入口８ａと、チャンバ部８ｃの内部の液体を流出させる流出口から成る接続部８ｂが形成されており、チャンバ部８ｃの内部には、図１９に示すように、流入口８ａ及び接続部８ｂと連通した液室Ｓ１と、図示しない液圧センサと接続口８ｅを介して連通した気室Ｓ２と、これら液室Ｓ１と気室Ｓ２とを画成するダイアフラム８ｄとを有して構成されている。
The connecting portion 8b is composed of an outlet formed in the pressure monitor chamber 8 (optional component) connected to the dialysate outlet tube L2. The pressure monitor chamber 8 is formed with an inflow port 8a for allowing liquid to flow into the chamber portion 8c and a connection portion 8b including an outflow port for flowing out the liquid inside the chamber portion 8c. As shown in FIG. 19, the liquid chamber S1 communicated with the inlet 8a and the connecting portion 8b, the air chamber S2 communicated with the hydraulic pressure sensor (not shown) through the connection port 8e, and the liquid chamber S1 and the gas A diaphragm 8d defining the chamber S2 is provided.
しかして、透析液導出チューブＬ２を流通する液体が圧力モニタチャンバ８に至った後、流入口８ａから接続部８ｂに向かって流れると、気室Ｓ２の圧力が液室Ｓ１の圧力と等しくなるまでダイアフラム８ｄが変形して気室Ｓ２の容量を変化させる。このとき、気室Ｓ２の圧力を図示しない液圧センサにて計測することにより、液室Ｓ１内の液体の圧力（すなわち、透析液導出チューブＬ２内の液圧）を検出することができるのである。
Thus, after the liquid flowing through the dialysate outlet tube L2 reaches the pressure monitor chamber 8 and flows from the inlet 8a toward the connecting portion 8b, the pressure in the air chamber S2 becomes equal to the pressure in the liquid chamber S1. The diaphragm 8d is deformed to change the capacity of the air chamber S2. At this time, the pressure of the liquid in the liquid chamber S1 (that is, the liquid pressure in the dialysate outlet tube L2) can be detected by measuring the pressure in the air chamber S2 with a hydraulic pressure sensor (not shown). .
接続部８ｂ及び流入口８ａは、チャンバ部８ｃから一体的に突出形成されたポート状部位から成り、透析液導出チューブＬ２の端部が接続されるとともに、接続部８ｂの一部が切欠かれて、導電性部材９を合致させて位置決め固定し得る固定部８ｂａを形成している。すなわち、固定部８ｂａには、受け面８ｂｂが形成されており、当該受け面８ｂｂに導電性部材９の下面を合致することにより位置決め可能とされているのである。
The connection portion 8b and the inflow port 8a are formed of a port-like portion that is integrally protruded from the chamber portion 8c. The end portion of the dialysate outlet tube L2 is connected, and a part of the connection portion 8b is cut away. A fixing portion 8ba is formed which can align and fix the conductive member 9 together. That is, a receiving surface 8bb is formed on the fixed portion 8ba, and positioning can be performed by matching the lower surface of the conductive member 9 with the receiving surface 8bb.
導電性部材９は、例えばカーボンナノチューブを含有するポリカーボネート又はカーボンブラックを含有するポリ塩化ビニル等、可撓性チューブと接着や熱溶着が容易な導電材料を成形等することにより得られるもので、図２２、２３に示すように、円筒形状を半割状にした半割形状の部材から成り、内周面９ａと、接液部９ｂと、接地部９ｃ及び合致部９ｄとが一体形成されて構成されている。なお、導電性部材９は、第１、２の実施形態と同様、その表面抵抗が１０２～１０１２Ω程度のものが好ましい。
The conductive member 9 is obtained, for example, by molding a conductive material that can be easily bonded or thermally welded to a flexible tube, such as polycarbonate containing carbon nanotubes or polyvinyl chloride containing carbon black. 22 and 23, it is composed of a half-shaped member in which the cylindrical shape is halved, and the inner peripheral surface 9a, the liquid contact portion 9b, the grounding portion 9c and the matching portion 9d are integrally formed. Has been. As in the first and second embodiments, the conductive member 9 preferably has a surface resistance of about 10 2 to 10 12 Ω.
内周面９ａは、円弧状の面から成り、取り付ける流路（接続部８ｂに接続された透析液導出チューブＬ２）の外周面に倣った形状とされているとともに、所定位置には、突起状に形成された接液部９ｂが形成されている。この接液部９ｂは、透析液導出チューブＬ２の所定位置に形成された挿通孔Ｌ２ａに挿通されて透析液（透析液導出チューブＬ２を流通する液体）に接液可能な部位から成る。
The inner peripheral surface 9a is an arc-shaped surface, and has a shape that follows the outer peripheral surface of the flow path to be attached (the dialysate outlet tube L2 connected to the connection portion 8b). The liquid contact part 9b formed in the above is formed. The liquid contact portion 9b is formed of a portion that can be inserted into an insertion hole L2a formed at a predetermined position of the dialysate outlet tube L2 and contact the dialysate (liquid flowing through the dialysate outlet tube L2).
合致部９ｄは、導電性部材９の縁面から成り、固定部８ｂａの受け面８ｂｂに合致し得るようになっている。そして、合致部９ｄを固定部８ｂａの受け面８ｂｂに合致させると、接液部９ｂが透析液導出チューブＬ２の挿通孔Ｌ２ａに合致する位置とされるので、図１７に示すように、当該接液部９ｂを挿通孔Ｌ２ａに挿通させつつ内周面９ａを透析液導出チューブＬ２の外周面に接着等させて固定することができる。
The matching portion 9d is composed of the edge surface of the conductive member 9, and can match the receiving surface 8bb of the fixing portion 8ba. Then, when the matching portion 9d is matched with the receiving surface 8bb of the fixing portion 8ba, the liquid contact portion 9b is positioned so as to match the insertion hole L2a of the dialysate outlet tube L2. The inner peripheral surface 9a can be adhered and fixed to the outer peripheral surface of the dialysate outlet tube L2 while the liquid portion 9b is inserted through the insertion hole L2a.
接地部９ｃは、導電性部材９の外周面の一部から成り、カバーＨに取り付けられた接地手段Ｅ（図２参照）と接触して接地可能とされ、透析液導出チューブＬ２及びそれに接続された流路の液体に帯びた電荷を外部に放散させ得るものである。特に、本実施形態においては、接地部９ｃにおける接地手段Ｅとの接触部が略平坦な面から成り、その略平坦な面が接地手段Ｅに面接触し得るよう構成されている。
The grounding portion 9c is composed of a part of the outer peripheral surface of the conductive member 9, and can be grounded by contacting with the grounding means E (see FIG. 2) attached to the cover H, and is connected to the dialysate outlet tube L2 and to it. It is possible to dissipate the charge on the liquid in the flow path to the outside. In particular, in the present embodiment, the contact portion with the grounding means E in the grounding portion 9c is formed of a substantially flat surface, and the substantially flat surface can be in surface contact with the grounding means E.
すなわち、第１、２の実施形態と同様、カバーＨを閉じると、被しごき用可撓性チューブ（Ｄ１～Ｄ５）が血液ポンプＰ１及びしごき型ポンプ（Ｐ２～Ｐ５）に一括して取り付けられるとともに、図１８に示すように、接地手段Ｅが導電性部材９の接地部９ｃと接触するので、透析液導出チューブＬ２及びそれに接続された流路の液体に帯びた電荷を外部に放散することができるのである。
That is, as in the first and second embodiments, when the cover H is closed, the ironing flexible tubes (D1 to D5) are collectively attached to the blood pump P1 and the ironing pumps (P2 to P5). As shown in FIG. 18, since the grounding means E is in contact with the grounding part 9c of the conductive member 9, it is possible to dissipate the charge on the dialysate outlet tube L2 and the liquid in the flow channel connected to the outside. It can be done.
本実施形態によれば、接地部９ｃにおける接地手段Ｅとの接触部は、略平坦な面から成るので、接地部９ｃと接地手段Ｅとの接触を面接触として確実に行わせることができ、流路（透析液導出チューブＬ２及びそれに接続された流路）に帯びた電荷をより良好且つ確実に外部に放散することができる。また、本実施形態によれば、透析液導出チューブＬ２の端部を接続可能とされた絶縁部材から成る接続部８ｂを有するとともに、当該接続部８ｂは、導電性部材９を合致させて位置決め固定し得る固定部８ｂａが形成されたので、透析液導出チューブＬ２に対して導電性部材９を精度よく安定して取り付けることができる。
According to the present embodiment, since the contact portion with the grounding means E in the grounding portion 9c is formed of a substantially flat surface, the contact between the grounding portion 9c and the grounding means E can be reliably performed as surface contact, It is possible to dissipate the charge on the flow path (dialysate outlet tube L2 and the flow path connected thereto) better and more reliably to the outside. In addition, according to the present embodiment, the connection portion 8b is made of an insulating member that can be connected to the end portion of the dialysate outlet tube L2, and the connection portion 8b is positioned and fixed by matching the conductive member 9. Since the possible fixing | fixed part 8ba was formed, the electroconductive member 9 can be accurately and stably attached with respect to the dialysate extraction tube L2.
さらに、本実施形態に係る接続部８ｂは、透析液導出チューブＬ２（流路）に接続された任意部品（本実施形態においては圧力モニタチャンバ８）に形成されたので、その任意部品の一部に透析液導出チューブＬ２を接続させる接続機能と、導電性部材９を位置決め固定する固定機能とを兼ね備えることができる。なお、本実施形態においては、圧力モニタチャンバ８に接続部８ｂが形成されているが、流路（透析液導出チューブＬ２又は他の流路）に接続された他の任意部品（液圧を計測するものの他、流路を流れる液体に対して他のパラメータを計測するもの、或いはポンプ等の液体を流路にて送液させるもの等）であってもよい。また、上記実施形態の帯電防止具による効果を有した医療用回路又は血液浄化装置を提供することができる。
Furthermore, since the connection portion 8b according to the present embodiment is formed in an optional component (the pressure monitor chamber 8 in the present embodiment) connected to the dialysate outlet tube L2 (flow path), a part of the optional component The dialysate lead-out tube L2 can be connected to the connection function and the conductive member 9 can be fixedly positioned. In the present embodiment, the connection portion 8b is formed in the pressure monitor chamber 8, but other optional components (measurement of the fluid pressure) connected to the flow path (dialysate derivation tube L2 or other flow path). In addition to the above, it is also possible to measure other parameters for the liquid flowing in the flow path, or to send liquid such as a pump through the flow path. Moreover, the medical circuit or blood purification apparatus which had the effect by the antistatic tool of the said embodiment can be provided.
以上、本実施形態について説明したが、本発明はこれに限定されず、例えば帯電防止具を構成する導電性部材（６、７、９）は、カーボンナノチューブを含有するポリカーボネート又はカーボンブラックを含有するポリ塩化ビニルに限定されず、他の汎用的な導電材料（金属等）としてもよい。また、帯電防止具の接地位置は、透析液導出チューブＬ２に限定されず、透析液導入チューブＬ１、動脈側血液回路１ａ、静脈側血液回路１ｂの途中であって、血液ポンプＰ１やしごき型ポンプ（Ｐ２～Ｐ５）が配設された位置の間、或いは血液ポンプＰ１の上流側（患者側）等であってもよい。
As mentioned above, although this embodiment was described, this invention is not limited to this, For example, the electroconductive member (6, 7, 9) which comprises an antistatic tool contains the polycarbonate or carbon black containing a carbon nanotube. The material is not limited to polyvinyl chloride, and may be other general-purpose conductive materials (metal or the like). The grounding position of the antistatic device is not limited to the dialysate lead-out tube L2, but is in the middle of the dialysate introduction tube L1, the arterial blood circuit 1a, and the venous blood circuit 1b, and the blood pump P1 and the ironing pump It may be between the positions where (P2 to P5) are disposed, or on the upstream side (patient side) of the blood pump P1.
さらに、本実施形態においては、接地手段ＥがカバーＨに形成されているが、他の部位に形成して導電性部材の接地部に接触させるものであってもよい。なお、ダイアライザ２に代えて他の血液浄化器（ヘモフィルタ、血漿分離器、血液吸着器等）としてもよく、或いは血液回路１に代えて体外循環させない血液流路（例えば、輸液や輸血等の流路）に適用してもよい。また、適用される血液浄化治療は、透析治療に限定されず、患者の血液を体外循環させつつ浄化する他の治療のための血液浄化装置であってもよい。
Furthermore, in the present embodiment, the grounding means E is formed on the cover H, but it may be formed on another part and brought into contact with the grounding part of the conductive member. Instead of the dialyzer 2, another blood purifier (hemofilter, plasma separator, blood adsorber, etc.) may be used, or a blood flow path (for example, a fluid such as an infusion or blood transfusion) that is not circulated outside the body instead of the blood circuit 1. Road). The applied blood purification treatment is not limited to dialysis treatment, and may be a blood purification device for other treatments that purifies the patient's blood while circulating it extracorporeally.
流路に形成された挿通孔に挿通されて液体に接液可能な接液部と、接地手段と接触して接地可能とされ、流路の液体に帯びた電荷を外部に放散させ得る接地部とが一体形成された導電性部材を有する帯電防止具であれば、他の機能が付加されたもの等であってもよい。
A wetted part that can be inserted into an insertion hole formed in the flow path so as to come into contact with the liquid, and a grounded part that can be grounded in contact with the grounding means and can dissipate the electric charge on the liquid in the flow path to the outside. As long as the antistatic tool has a conductive member formed integrally with each other, it may be one with other functions added.
１ 血液回路
１ａ 動脈側血液回路（流路）
１ｂ 静脈側血液回路（流路）
２ ダイアライザ（血液浄化器）
３ 重量計
４ 重量計
５ 帯電防止具
６ 導電性部材
７ 導電性部材
８ 接続部
９ 導電性部材
Ｐ１ 血液ポンプ（しごき型ポンプ）
Ｐ２～Ｐ５ しごき型ポンプ
Ｌ１ 透析液導入チューブ（流路）
Ｌ２ 透析液導出チューブ（流路）
Ｌ３ 補液導入チューブ（流路）
Ｄ１～Ｄ５ 被しごき用可撓性チューブ（流路） 1 Blood circuit 1a Arterial blood circuit (flow path)
1b Venous blood circuit (flow path)
2 Dialyzer (blood purifier)
3 WeighingScale 4 Weighing Scale 5 Antistatic Tool 6 Conductive Member 7 Conductive Member 8 Connection Portion 9 Conductive Member P1 Blood Pump (Concrete Type Pump)
P2 to P5 Ironing pump L1 Dialysate introduction tube (flow path)
L2 Dialysate outlet tube (flow path)
L3 Replacement fluid introduction tube (flow path)
D1-D5 Ironing flexible tube (flow path)
１ａ 動脈側血液回路（流路）
１ｂ 静脈側血液回路（流路）
２ ダイアライザ（血液浄化器）
３ 重量計
４ 重量計
５ 帯電防止具
６ 導電性部材
７ 導電性部材
８ 接続部
９ 導電性部材
Ｐ１ 血液ポンプ（しごき型ポンプ）
Ｐ２～Ｐ５ しごき型ポンプ
Ｌ１ 透析液導入チューブ（流路）
Ｌ２ 透析液導出チューブ（流路）
Ｌ３ 補液導入チューブ（流路）
Ｄ１～Ｄ５ 被しごき用可撓性チューブ（流路） 1 Blood circuit 1a Arterial blood circuit (flow path)
1b Venous blood circuit (flow path)
2 Dialyzer (blood purifier)
3 Weighing
P2 to P5 Ironing pump L1 Dialysate introduction tube (flow path)
L2 Dialysate outlet tube (flow path)
L3 Replacement fluid introduction tube (flow path)
D1-D5 Ironing flexible tube (flow path)
Claims (8)
- 液体が流通し得る流路に取り付けられ、所定部位が前記液体に接液可能とされるとともに、電気的に接地させる接地手段と接触することにより前記流路の液体に帯びた電荷を外部に放散可能な帯電防止具において、
前記流路に形成された挿通孔に挿通されて前記液体に接液可能な接液部と、前記接地手段と接触して接地可能とされ、前記流路の液体に帯びた電荷を外部に放散させ得る接地部とが一体形成された導電性部材を有することを特徴とする帯電防止具。 It is attached to a flow path through which liquid can circulate, and a predetermined part can come into contact with the liquid, and the charge on the liquid in the flow path is dissipated to the outside by contact with a grounding means for electrically grounding. In the possible antistatic device,
A liquid contact portion that is inserted into an insertion hole formed in the flow path and can come into contact with the liquid, and can be grounded in contact with the grounding means, and the charge on the liquid in the flow path is dissipated to the outside. An antistatic tool comprising a conductive member integrally formed with a grounding portion which can be made to be formed. - 前記流路は、可撓性チューブから成るとともに、液体の流通方向にローラが回転して流路をしごくことにより送液させ得るしごき型ポンプが配設されたことを特徴とする請求項１記載の帯電防止具。 2. The flow path is made of a flexible tube, and a peristaltic pump capable of feeding a liquid by squeezing the flow path by rotating a roller in a liquid flow direction is provided. Antistatic device.
- 前記接液部は、その突端に前記流路の挿通孔より大径とされた大径部を有し、当該大径部にて接液可能とされたことを特徴とする請求項１又は請求項２記載の帯電防止具。 2. The liquid contact portion according to claim 1, wherein the liquid contact portion has a large diameter portion that is larger in diameter than an insertion hole of the flow path at a protruding end, and the liquid contact portion can be in contact with the large diameter portion. Item 3. The antistatic device according to Item 2.
- 前記接地部における前記接地手段との接触部は、略平坦な面から成ることを特徴とする請求項１～３の何れか１つに記載の帯電防止具。 The antistatic device according to any one of claims 1 to 3, wherein a contact portion of the grounding portion with the grounding means comprises a substantially flat surface.
- 前記流路の端部を接続可能とされた絶縁部材から成る接続部を有するとともに、当該接続部は、前記導電性部材を合致させて位置決め固定し得る固定部が形成されたことを特徴とする請求項１～４の何れか１つに記載の帯電防止具。 In addition to having a connecting portion made of an insulating member capable of connecting the end portion of the flow path, the connecting portion is formed with a fixing portion that can be positioned and fixed by matching the conductive member. The antistatic device according to any one of claims 1 to 4.
- 前記接続部は、前記流路に接続された任意部品に形成されたことを特徴とする請求項５記載の帯電防止具。 6. The antistatic device according to claim 5, wherein the connecting portion is formed in an arbitrary part connected to the flow path.
- 請求項１～６の何れか１つに記載の帯電防止具を有することを特徴とする医療用回路。 A medical circuit comprising the antistatic device according to any one of claims 1 to 6.
- 請求項１～６の何れか１つに記載の帯電防止具を有することを特徴とする血液浄化装置。 A blood purification apparatus comprising the antistatic device according to any one of claims 1 to 6.
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| JP2014229948A JP6739144B2 (en) | 2014-11-12 | 2014-11-12 | Antistatic tool |
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| EP3509664A4 (en) * | 2016-11-02 | 2020-06-03 | St. Jude Medical, Cardiology Division, Inc. D/B/A | Interface tubing for peristaltic pump |
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