JP2003088583A - Transfusion management device - Google Patents
Transfusion management deviceInfo
- Publication number
- JP2003088583A JP2003088583A JP2001284695A JP2001284695A JP2003088583A JP 2003088583 A JP2003088583 A JP 2003088583A JP 2001284695 A JP2001284695 A JP 2001284695A JP 2001284695 A JP2001284695 A JP 2001284695A JP 2003088583 A JP2003088583 A JP 2003088583A
- Authority
- JP
- Japan
- Prior art keywords
- noise
- unit
- liquid level
- section
- management device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims abstract description 30
- 230000003287 optical effect Effects 0.000 claims abstract description 12
- 238000005259 measurement Methods 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims description 72
- 238000001802 infusion Methods 0.000 claims description 24
- 230000003321 amplification Effects 0.000 claims description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000007257 malfunction Effects 0.000 abstract description 7
- 239000007924 injection Substances 0.000 description 7
- 238000002347 injection Methods 0.000 description 7
- 239000000126 substance Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000003814 drug Substances 0.000 description 4
- 229940079593 drug Drugs 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000003978 infusion fluid Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 210000001015 abdomen Anatomy 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、薬液注入部材を用
いて輸液剤等の薬剤及び血液や血漿等の体液等を、体内
に注入する際の管理を簡易化し、患者と医療従事者の負
担を軽減する輸液管理装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention simplifies management when injecting a drug such as an infusion agent and a body fluid such as blood or plasma into a body by using a drug solution injection member, and burdens a patient and a medical staff. The present invention relates to an infusion management device that reduces the illness.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】図４は
薬液注入部材２１のドリップチャンバー２１Ａに従来の
液面検出部２２を装着した時の概略図である。薬液注入
部材２１は上部チューブ２７の先端に瓶針ＢＮを装着
し、該上部チューブ２７と下部チューブ２８の途中にド
リップチャンバー２１Ａを装着し、前記下部チューブ２
８にローラークランプ２９を配置し、該下部チューブ２
８の下端に穿刺針Ｎを装着している。例えば体内に薬剤
等を注入する場合、スタンドＳに輸液ボトル２６を引っ
掛けて、瓶針ＢＮを輸液ボトル２６に穿刺し、前記ドリ
ップチャンバー２１Ａの略中腹部の液面２５まで薬液を
溜めた後、穿刺針Ｎの先端まで薬液を充填させる。前記
液面検出部２２は発光部２２Ａと受光部２２Ｂから形成
されている。前記液面２５の下部に検出用の光線が通過
するように発光部２２Ａと該発光部２２Ａと対向する位
置に受光部２２Ｂが取り付けられている。前記発光部２
２Ａは赤外線を発光する部分で、受光部２２Ｂは、光線
が液中を通過するときと、液面２５が低下して空気中を
通過するときに発生する光量の変化を電圧の変化に変換
して測定することにより、前記液面２５の低下を検出す
る部分である。また前記光量の変化を電気抵抗の変化に
変換して測定することもできる。しかし、前記受光部２
２Ｂは発光部２２Ａからのみの光線を受信するだけでな
く、外部の明るさの変化をも受信している。こうした外
部の明るさのうち、液面２５が低下したときに発生する
信号と類似した信号を受信した場合、液面検出部２２は
液面２５が低下したものとみなしてしまい誤作動する。
この場合「誤作動」とは、例えば前記液面２５が検出レ
ベルＬより下に位置するのに、信号が前記の影響によ
り、前記液面２５が検出レベルＬより上に位置する状態
である信号となり、液面検出部２２と連動するクランプ
（図示せず）が開放状態となり薬液注入が継続された
り、またその逆で液面２５が検出レベルＬより上に位置
するのに前記クランプが閉じてしまう状態を示す。要す
るに前記液面検出部２２で作動及び警報を発生する装置
が、実際と異なる状態の信号として受信し、作動の続行
及び中止並びに警報を発することである。この為に、受
光部２２Ｂの感受性を下げたりすると、実際に液面２５
が低下したことを検出しなくなる虞がある。また外部の
光の変化を受信しないように、受光部２２Ｂを外部から
覆い隠すようなデザインを取り入れる場合は、ドリップ
チャンバー２１Ａ及び液面２５が見づらくなり、輸液を
管理するためには不適切である。2. Description of the Related Art FIG. 4 is a schematic view of a drip chamber 21A of a chemical liquid injection member 21 to which a conventional liquid level detector 22 is attached. In the chemical liquid injection member 21, a bottle needle BN is attached to the tip of an upper tube 27, a drip chamber 21A is attached midway between the upper tube 27 and the lower tube 28, and the lower tube 2
8 is provided with a roller clamp 29, and the lower tube 2
A puncture needle N is attached to the lower end of 8. For example, when injecting a drug or the like into the body, the infusion bottle 26 is hooked on the stand S, the bottle needle BN is pierced into the infusion bottle 26, and after the medicinal solution is accumulated up to the liquid surface 25 of the substantially middle abdomen of the drip chamber 21A, The drug solution is filled up to the tip of the puncture needle N. The liquid level detection unit 22 is composed of a light emitting unit 22A and a light receiving unit 22B. A light emitting portion 22A and a light receiving portion 22B are attached to the lower portion of the liquid surface 25 so as to allow the detection light beam to pass therethrough and at a position facing the light emitting portion 22A. The light emitting unit 2
Reference numeral 2A denotes a portion that emits infrared rays, and the light receiving portion 22B converts a change in the amount of light that occurs when a light ray passes through the liquid and when the liquid surface 25 lowers and passes through the air into a change in voltage. This is a portion for detecting the decrease in the liquid level 25 by measuring the above. It is also possible to convert the change in the amount of light into a change in electrical resistance for measurement. However, the light receiving unit 2
2B receives not only the light rays from the light emitting section 22A but also the change in external brightness. When a signal similar to the signal generated when the liquid level 25 is lowered is received from such external brightness, the liquid level detection unit 22 considers that the liquid level 25 is lowered and malfunctions.
In this case, the "malfunction" is a signal in which, for example, the liquid level 25 is located below the detection level L, but the signal level is above the detection level L due to the above influence. Then, the clamp (not shown) interlocking with the liquid level detection unit 22 is opened to continue injecting the chemical liquid, and vice versa, the clamp is closed even though the liquid level 25 is located above the detection level L. Indicates the state of being closed. In short, the device for generating an operation and alarm in the liquid level detection unit 22 receives as a signal of a state different from the actual state, and continues and stops the operation and issues an alarm. Therefore, if the sensitivity of the light receiving portion 22B is lowered, the liquid level 25
May not be detected. Further, in the case of incorporating a design that covers the light receiving portion 22B from the outside so as not to receive a change in external light, the drip chamber 21A and the liquid surface 25 become difficult to see, which is unsuitable for managing infusion. .
【０００３】またドリップチャンバー２１Ａの上部チュ
ーブ２７の外周に、該上部チューブ２７内に混入する気
泡を感知する装置を装着するする方法もある。この場
合、外部の光を受信しないように、受光部２Ｂの開口部
を完全に覆い隠すような形状を持たせるセンサ（以後
「気泡検出センサ２３Ａ」と略記する）ことが可能であ
る。しかし、現在はドリップチャンバー２１Ａの上部に
瓶針ＢＮを直接装着し、上部チューブ２７を配置しない
薬液注入部材２１も多くなり、このような気泡検出セン
サ２３Ａが使用できる範囲は狭くなっている。またドリ
ップチャンバー２１Ａの下部チューブ２８に上記のよう
な気泡検出センサ２３Ａを取りつけることにより、輸液
の終了を検知することも可能ではある。しかし、現在の
輸液が終了したあと、すぐに輸液剤を取り替えて、新し
い輸液を行うことも多くこうした場合、薬液注入部材２
１内部、特に下部チューブ２８に空気が混入すると、こ
の空気を除去してから輸液を行う必要があり、輸液剤の
交換にかかる手間が増えてしまう。従って前記下部チュ
ーブ２８に気泡検出センサ２３Ａを取りつける方法で
は、点滴注射の管理を簡易化し、医療従事者の負担を軽
減させる事にはならない。そこで本発明者は以上の課題
を解決する為に鋭意検討を重ねた結果、次の発明に到達
した。There is also a method of mounting a device for sensing bubbles mixed in the upper tube 27 on the outer circumference of the upper tube 27 of the drip chamber 21A. In this case, it is possible to use a sensor (hereinafter abbreviated as “bubble detection sensor 23A”) having a shape that completely covers the opening of the light receiving section 2B so as not to receive external light. However, at present, the number of chemical liquid injection members 21 in which the bottle needle BN is directly attached to the upper portion of the drip chamber 21A and the upper tube 27 is not arranged is increased, and the range in which such a bubble detection sensor 23A can be used is narrowed. It is also possible to detect the end of infusion by attaching the above-mentioned bubble detection sensor 23A to the lower tube 28 of the drip chamber 21A. However, it is often the case that a new transfusion is performed by replacing the transfusion agent immediately after the current transfusion is completed.
1. When air is mixed into the inside of 1, especially the lower tube 28, it is necessary to remove this air before transfusion, which increases the time and labor required for exchanging the transfusion agent. Therefore, the method of attaching the bubble detection sensor 23A to the lower tube 28 does not simplify the administration of the drip injection and reduce the burden on the medical staff. Therefore, the present inventor has earnestly studied in order to solve the above problems, and as a result, arrived at the next invention.
【０００４】[0004]
【課題を解決するための手段】［１］本発明は、発光部
（２Ａ）と該発光部（２Ａ）の信号を受信する受光部
（２Ｂ）からなる液面検出部（２）と、前記受光部（２
Ｂ）に入り込む光学的ノイズないしこれと同等なノイズ
を観測するノイズ測定部（３）から構成され、前記受光
部（２Ｂ）の全ての受信信号から、前記ノイズ測定部
（３）により測定された前記ノイズを差し引くことによ
り、液面の低下のみの信号を検出できるようにした輸液
管理装置（１）を提供する。
［２］本発明は、液面検出部（２）、（３２）とノイズ
測定部（３）、（３３）の各信号の増幅部（３４）、
（３５）と、該増幅部（３４）、（３５）の両者の信号
の比較部（３６）と、液面低下の有無の判定部（３７）
を有し、該判定部（３７）が液面低下と判定した時に警
報部（３８）及び駆動部（３９）を作動させる制御部
（Ｃ）を判定部（３７）と警報部（３８）、駆動部（３
９）の間に接続した前記［１］に記載の輸液管理装置
（１）を提供する。
［３］本発明は、前記警報部（３８）にナースコール
（４０）を接続した前記［１］ないし［２］に記載の輸
液管理装置（１）を提供する。
［４］本発明は、前記判定部（３７）が液面低下と判定
した時、駆動部（３９）が下部チューブ（８）を挟持す
るように形成した前記［１］ないし［３］に記載の輸液
管理装置（１）を提供する。
［５］本発明は、前記液面検出部（２）及び／又はノイ
ズ観測部（３）をハウジング内に収納し、ドリップチャ
ンバー（１Ａ）の外周面に装着した前記［１］ないし
［４］に記載の輸液管理装置（１）を提供する。[1] The present invention relates to a liquid level detecting section (2) comprising a light emitting section (2A) and a light receiving section (2B) for receiving a signal from the light emitting section (2A), and Light receiving part (2
B) is composed of a noise measuring section (3) for observing optical noise or noise equivalent to the optical noise, and is measured by the noise measuring section (3) from all received signals of the light receiving section (2B). Provided is an infusion management device (1) capable of detecting a signal of only a decrease in liquid level by subtracting the noise. [2] In the present invention, the liquid level detecting units (2) and (32) and the noise measuring units (3) and (33) amplifying units (34) for respective signals,
(35), a comparing section (36) for both signals of the amplifying sections (34), (35), and a determining section (37) for determining whether or not the liquid level has decreased.
And a control unit (C) that activates the alarm unit (38) and the drive unit (39) when the determination unit (37) determines that the liquid level is low, the determination unit (37) and the alarm unit (38), Drive unit (3
The infusion management device (1) according to the above [1], which is connected between 9). [3] The present invention provides the infusion management device (1) according to the above [1] or [2], wherein a nurse call (40) is connected to the alarm unit (38). [4] The present invention is the above [1] to [3], wherein the drive unit (39) is formed so as to hold the lower tube (8) when the determination unit (37) determines that the liquid level has dropped. The infusion management device (1) is provided. [5] In the present invention, the liquid level detection unit (2) and / or the noise observation unit (3) are housed in a housing and mounted on the outer peripheral surface of the drip chamber (1A). The infusion management device (1) according to 1. is provided.
【０００５】[0005]
【発明の実施の形態】図１は本発明の輸液管理装置１の
一例を示す概略図で、ドリップチャンバー１Ａの外周に
装着したところの概略図である。輸液管理装置１は発光
部２Ａと受光部２Ｂからなる液面検出部２とノイズ測定
部３（観測センサ）から構成されている。前記発光部２
Ａは例えば赤外線等の液面検出用の光を発光する部材で
あり、前記受光部２Ｂは前記発光部２Ａからの信号を受
信する部材であるが外部の明るさの変化等による光学的
ノイズないしこれと同等なノイズも受信する。前記ノイ
ズ測定部３は前記受光部２Ｂに入り込む前記光学的ノイ
ズないしこれと同等なノイズのみを観測するセンサであ
る。前記受光部２Ｂは前記発光部２Ａからの赤外線等の
液面検出用の光が、液中を通過するときと、液面５が低
下して空気中を通過するときに発生する光量の変化を電
圧の変化に変換して測定することにより液面５の低下を
検出する。また前記光量の変化を電気抵抗の変化に変換
して測定することもできる。前記ノイズ測定部３は外部
の明るさ（光量）の変化を検出する。観測センサ３で前
記受光部２Ｂに受ける前記光学的ノイズないしこれと同
等のノイズのみを観測し、受光部２Ｂの前記ノイズを含
んだ液面低下の信号からノイズ測定部３で測定したノイ
ズを差し引くことにより、受光部２Ｂに受信されたノイ
ズが相殺され純粋な液面低下のみの信号となり、液面低
下の状態を正確に知ることができる。前記発光部２Ａの
信号を受光部２Ｂが受信する手段には透過光と反射
光の二通りを採用することができる。
透過光の場合、光はドリップチャンバー１Ａを通過す
る位置に発光部２Ａ、受光部２Ｂを対向して位置する。
液体を透過する場合と、空気を透過する場合の光量の変
化を測定する。液体がある場合は光線が屈折し、受光部
２Ｂに届かず、液体がなくなった場合は光線が直進し受
光部２Ｂに届くように調整して配置する。
反射光の場合は、発光部２Ａ、受光部２Ｂの光軸がド
リップチャンバー１Ａ内交差するように位置する。液体
がある場合は、光線は直進し受光部２Ｂには届かない。
液体がなくなった場合はドリップチャンバー１Ａ内面で
光線が反射して受光部２Ｂに届くように調整して配置す
る。輸液管理装置１は前記液面検出部２及び／又はノイ
ズ観測部３をハウジング内に収納し、該ハウジングにド
リップチャンバー１Ａを装着する溝を形成することによ
りドリップチャンバー１Ａの外周面に装着することがで
きる。前記ドリップチャンバー１Ａの液面５の下に、前
記発光部２Ａと受光部２Ｂを対向して配置し、前記受光
部２Ｂの近くに、好ましくは前記受光部２Ｂの下にノイ
ズ測定部３を配置する。前記ノイズ測定部３は前記液面
検出部２のハウジング内に装着しても良いし、ハウジン
グの外に露出させて前記液面検出部２の受光部２Ｂの近
くに配置しても良い。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic view showing an example of an infusion solution management device 1 of the present invention, which is a schematic view when it is mounted on the outer periphery of a drip chamber 1A. The infusion management device 1 is composed of a liquid level detection unit 2 including a light emitting unit 2A and a light receiving unit 2B, and a noise measuring unit 3 (observation sensor). The light emitting unit 2
A is a member that emits light for liquid level detection such as infrared rays, and the light receiving unit 2B is a member that receives a signal from the light emitting unit 2A. However, optical noise due to a change in external brightness or the like is generated. Noise equivalent to this is also received. The noise measuring unit 3 is a sensor for observing only the optical noise entering the light receiving unit 2B or a noise equivalent thereto. The light receiving unit 2B changes the amount of light generated when the liquid level detection light such as infrared rays from the light emitting unit 2A passes through the liquid and when the liquid level 5 is lowered and passes through the air. The decrease in the liquid level 5 is detected by converting the voltage into a change and measuring the change. It is also possible to convert the change in the amount of light into a change in electrical resistance for measurement. The noise measuring unit 3 detects a change in external brightness (light amount). The observation sensor 3 observes only the optical noise received by the light receiving section 2B or noise equivalent thereto, and subtracts the noise measured by the noise measuring section 3 from the signal of the liquid level drop including the noise of the light receiving section 2B. As a result, the noise received by the light receiving unit 2B is canceled out, and a signal of pure liquid level drop is obtained, and the state of liquid level drop can be accurately known. Two types of transmitted light and reflected light can be adopted as means for receiving the signal of the light emitting section 2A by the light receiving section 2B. In the case of transmitted light, the light is located at a position where it passes through the drip chamber 1A with the light emitting unit 2A and the light receiving unit 2B facing each other.
The change in the amount of light when passing through a liquid and when passing through air is measured. When the liquid is present, the light ray is refracted and does not reach the light receiving portion 2B, and when the liquid is gone, the light ray is adjusted so as to go straight and reach the light receiving portion 2B. In the case of reflected light, the optical axes of the light emitting section 2A and the light receiving section 2B are positioned so as to intersect within the drip chamber 1A. When there is liquid, the light ray goes straight and does not reach the light receiving portion 2B.
When the liquid runs out, the drip chamber 1A is adjusted and arranged so that light rays are reflected by the inner surface of the drip chamber 1A and reach the light receiving portion 2B. The infusion control device 1 has the liquid level detection unit 2 and / or the noise observation unit 3 housed in a housing, and has a groove for mounting the drip chamber 1A formed in the housing to mount the liquid level detection unit 2 and / or the noise observation unit 3 on the outer peripheral surface of the drip chamber 1A. You can The light emitting portion 2A and the light receiving portion 2B are arranged to face each other under the liquid surface 5 of the drip chamber 1A, and the noise measuring portion 3 is arranged near the light receiving portion 2B, preferably below the light receiving portion 2B. To do. The noise measuring section 3 may be mounted inside the housing of the liquid level detecting section 2, or may be exposed outside the housing and arranged near the light receiving section 2B of the liquid level detecting section 2.
【０００６】図２は本発明の輸液管理装置１のブロック
図である。前記輸液管理装置１は電源部３１と、液面検
出部２、３２とノイズ測定部３、３３の各信号の増幅部
３４、３５と、該増幅部３４、３５の両者の信号の比較
部３６と液面低下の有無の判定部３７を有し、該判定部
３７が液面低下と判定した時に警報部３８及び駆動部３
９を作動させる制御部Ｃを判定部３７と警報部３８、駆
動部３９の間に接続している。さらに前記警報部３８に
はナースコール４０が接続されている。さらに前記判定
部３７が液面低下と判定した時、駆動部３９が下部チュ
ーブ８を挟持するように配置されている。前記警報部３
８とは例えば音を発生するブザーまたは光を点滅させる
ランプ等を採用することができる。前記駆動部３９はク
ランプである。
（１）前記液面検出部３２とノイズ測定部３３で、測定
された各信号はそれぞれ増幅部３４と３５により比較で
きるレベルまで増幅される。
（２）前記比較部３６で、前記受光部２Ｂの全ての受信
信号から観測センサ３で観測した外部の明るさの変化等
による光学的ノイズないしこれと同等なノイズを差し引
くことにより、液面の低下のみの信号を検出できる。
（３）前記液面５の低下の有無の信号が判定部３７に送
られ、前記信号により液面５の低下の有無が判定され
る。ドリップチャンバー１Ａの液面５が検出レベルＬよ
り低下した時、信号が制御部Ｃへ送信され警報部３８及
び駆動部３９を作動させる。例えば警報部３８でブザー
音を発し、さらにナースコール４０により看護婦にドリ
ップチャンバー１Ａ内の液面５の低下を知らせる。これ
と同時に下部チューブ８がクランプ９で挟持され空気
（気泡）が下部チューブ８に流入するのを未然に防ぐ。
また判定部３７により、液面５が検出レベルＬより上に
あると判定された場合は、前記信号は送信されず警報部
３８及びクランプ９は作動しない。また前記段落番号
［０００２］の中で「誤作動」について説明したが、ノ
イズを相殺した純粋な信号を正確に得ることによりこれ
らの誤作動を防止することができる。以上のようにノイ
ズを相殺し純粋な信号だけを抽出することにより、誤作
動をなくし正確な信号により発する警報等により患者の
安全を守ることができる。FIG. 2 is a block diagram of the infusion solution management device 1 of the present invention. The infusion management device 1 includes a power supply unit 31, amplification units 34 and 35 for respective signals of the liquid surface detection units 2 and 32, and noise measurement units 3 and 33, and a comparison unit 36 for both signals of the amplification units 34 and 35. And a liquid level drop determination unit 37, and when the determination unit 37 determines that the liquid level has dropped, an alarm unit 38 and a drive unit 3 are provided.
The control unit C for activating 9 is connected between the determination unit 37, the alarm unit 38, and the drive unit 39. Further, a nurse call 40 is connected to the alarm unit 38. Further, when the determination unit 37 determines that the liquid level is low, the drive unit 39 is arranged to hold the lower tube 8. The alarm unit 3
For example, a buzzer that generates a sound or a lamp that blinks light can be used as the reference numeral 8. The driving unit 39 is a clamp. (1) In the liquid level detection unit 32 and the noise measurement unit 33, the measured signals are amplified by the amplification units 34 and 35, respectively, to a comparable level. (2) The comparison unit 36 subtracts optical noise due to a change in external brightness observed by the observation sensor 3 or noise equivalent to this from all received signals of the light receiving unit 2B, thereby Only a drop signal can be detected. (3) A signal indicating whether or not the liquid level 5 is lowered is sent to the determination unit 37, and the presence or absence of the lowered liquid level 5 is determined by the signal. When the liquid level 5 of the drip chamber 1A drops below the detection level L, a signal is sent to the control unit C to activate the alarm unit 38 and the drive unit 39. For example, the alarm unit 38 emits a buzzer sound, and the nurse call 40 notifies the nurse of the drop of the liquid level 5 in the drip chamber 1A. At the same time, the lower tube 8 is clamped by the clamp 9 to prevent air (air bubbles) from flowing into the lower tube 8.
When the determination unit 37 determines that the liquid level 5 is above the detection level L, the signal is not transmitted and the alarm unit 38 and the clamp 9 do not operate. Although the "malfunction" has been described in the paragraph [0002], the malfunction can be prevented by accurately obtaining a pure signal in which noise is canceled. By canceling the noise and extracting only the pure signal as described above, it is possible to prevent malfunction and to protect the patient's safety by an alarm or the like issued by an accurate signal.
【０００７】図３は波形（ａ）（ｂ）（ｃ）の概略図で
ある。前記図３の波形（ａ）は、液面の低下を検出した
時のノイズを含んでいる受光部２Ｂの信号であり、該信
号の電圧を時系列であらわしたものである。波形（ｂ）
は、同じ時間にノイズ測定部３で受け取ったノイズを同
様にあらわしたものである。波形（ｃ）は、前記図２の
比較部３６により前記波形（ａ）から（ｂ）を差し引い
た結果を示したものである。前記波形（ａ）は、時間軸
の時間Ｔ１の時点から、輸液管理装置１の液面５が検出
レベルＬより低下した状態を示している。しかしノイズ
を含んでいる信号なので波形は上下に大小の波を示して
いる。前記（ｂ）はノイズ測定部３の外部からのノイズ
だけを信号として受けているので大小のノイズの波形が
示されている。前記ノイズを含んだ波形（ａ）から、観
測した外部の明るさの変化等による光学的ノイズないし
これと同等なノイズの波形（ｂ）を差し引くことによ
り、液面５の低下による変化が抽出され、液面５が検出
レベルＬより低下した時のノイズを相殺した純粋な信号
の波形（ｃ）を正確に知ることができる。FIG. 3 is a schematic diagram of waveforms (a), (b) and (c). The waveform (a) in FIG. 3 is a signal of the light receiving unit 2B that contains noise when a drop in the liquid level is detected, and represents the voltage of the signal in time series. Waveform (b)
Represents the noise similarly received by the noise measuring unit 3 at the same time. The waveform (c) shows the result of subtracting (b) from the waveform (a) by the comparison unit 36 of FIG. The waveform (a) shows a state in which the liquid level 5 of the infusion management device 1 is lower than the detection level L from the time point T1 on the time axis. However, since the signal contains noise, the waveform shows large and small waves at the top and bottom. In (b), since only noise from the outside of the noise measuring unit 3 is received as a signal, large and small noise waveforms are shown. By subtracting the waveform (b) of the optical noise or the noise equivalent to this from the waveform (a) containing the noise, the optical noise due to the change of the observed external brightness or the like, the change due to the decrease of the liquid level 5 is extracted. The waveform (c) of a pure signal that cancels noise when the liquid level 5 drops below the detection level L can be accurately known.
【０００８】[0008]
【発明の作用効果】本発明の輸液管理装置１により、液
面５が検出レベルＬより低下した信号とノイズ等を含ん
だ信号を受信した受光部２Ｂから前記ノイズ測定部３で
ノイズ等を差し引き、ノイズを相殺した純粋な信号を正
確に得ることにより誤作動を防止することができる。With the infusion control device 1 of the present invention, the noise measuring unit 3 subtracts noise and the like from the light receiving unit 2B that receives a signal in which the liquid level 5 is lower than the detection level L and a signal including noise and the like. Accurately obtaining a pure signal with noise canceled can prevent malfunction.
【図１】本発明の輸液管理装置１の一例を示す概略図FIG. 1 is a schematic diagram showing an example of an infusion management device 1 of the present invention.
【図２】本発明の輸液管理装置１のブロック図FIG. 2 is a block diagram of an infusion solution management device 1 of the present invention.
【図３】波形（ａ）（ｂ）（ｃ）の概略図で、波形
（ａ）は、液面の低下を検出した時のセンサ受光部２Ｂ
の信号波形、波形（ｂ）は、同じ時間にノイズ測定部３
で受信したノイズ等を同様に示した信号波形で、波形
（ｃ）は、前記波形（ａ）から（ｂ）を差し引いた信号
波形FIG. 3 is a schematic diagram of waveforms (a), (b), and (c), in which the waveform (a) is the sensor light receiving unit 2B when a drop in the liquid level is detected.
Of the signal waveform of the noise measuring unit 3 at the same time
Is a signal waveform similarly showing noise and the like received in step (c) is a signal waveform obtained by subtracting (b) from the waveform (a).
【図４】従来の液面検出部２２を装着した薬液注入部材
２１の概略図FIG. 4 is a schematic view of a chemical liquid injection member 21 equipped with a conventional liquid surface detection unit 22.
１ 輸液管理装置 １Ａ、２１Ａ ドリップチャンバー ２、２２、３２ 液面検出部 ２Ａ、２２Ａ 発光部 ２Ｂ、２２Ｂ 受光部 ３、３３ ノイズ測定部（観測センサ） ５、２５ 液面 ７、２７ 上部チューブ ８、２８ 下部チューブ ９ クランプ ２６ 輸液ボトル ２９ ローラークランプ ３１ 電源部 ３４、３５ 増幅部 ３６ 比較部 ３７ 判定部 ３８ 警報部 ３９ 駆動部 ４０ ナースコール Ｃ 制御部 Ｓ スタンド Ｌ 検出レベル Ｎ 穿刺針 ＢＮ 瓶針 ２１ 薬液注入部材 1 Infusion management device 1A, 21A drip chamber 2, 22, 32 Liquid level detector 2A, 22A light emitting part 2B, 22B light receiving part 3, 33 Noise measurement unit (observation sensor) 5, 25 liquid level 7,27 Upper tube 8, 28 lower tube 9 clamps 26 Infusion bottle 29 Roller clamp 31 power supply 34, 35 amplifier 36 Comparison Department 37 Judgment part 38 Alarm unit 39 Drive 40 nurse call C control unit S stand L detection level N puncture needle BN bottle needle 21 Chemical injection member
Claims (5)
を受信する受光部（２Ｂ）からなる液面検出部（２）
と、 前記受光部（２Ｂ）に入り込む光学的ノイズないしこれ
と同等なノイズを観測するノイズ測定部（３）から構成
され、 前記受光部（２Ｂ）の全ての受信信号から、前記ノイズ
測定部（３）により測定された前記ノイズを差し引くこ
とにより、液面の低下のみの信号を検出できるようにし
た、ことを特徴とする輸液管理装置（１）。1. A liquid level detecting section (2) comprising a light emitting section (2A) and a light receiving section (2B) for receiving signals from the light emitting section (2A).
And a noise measuring unit (3) for observing optical noise entering the light receiving unit (2B) or noise equivalent to this optical noise, and the noise measuring unit (3) from all received signals of the light receiving unit (2B). An infusion management device (1), wherein a signal indicating only a drop in the liquid level can be detected by subtracting the noise measured in 3).
部（３）、（３３）の各信号の増幅部（３４）、（３
５）と、該増幅部（３４）、（３５）の両者の信号の比
較部（３６）と、液面低下の有無の判定部（３７）を有
し、該判定部（３７）が液面低下と判定した時に警報部
（３８）及び駆動部（３９）を作動させる制御部（Ｃ）
を判定部（３７）と警報部（３８）、駆動部（３９）の
間に接続したことを特徴とする前記請求項１に記載の輸
液管理装置（１）。2. Amplification units (34) and (3) for the respective signals of the liquid level detection units (2) and (32) and the noise measurement units (3) and (33).
5), a comparing section (36) for comparing the signals of both the amplifying sections (34) and (35), and a judging section (37) for determining whether or not the liquid level has dropped, and the judging section (37) A control unit (C) that activates the alarm unit (38) and the drive unit (39) when it is determined to be low.
The infusion management device (1) according to claim 1, wherein the device is connected between the determination unit (37), the alarm unit (38), and the drive unit (39).
０）を接続したことを特徴とする前記請求項１ないし２
に記載の輸液管理装置（１）。3. A nurse call (4) is provided to the alarm section (38).
0) are connected to the above-mentioned claim 1 or 2 characterized by the above-mentioned.
The infusion management device (1) according to 1.
時、駆動部（３９）が下部チューブ（８）を挟持するよ
うに形成したことを特徴とする前記請求項１ないし３に
記載の輸液管理装置（１）。4. The drive unit (39) is formed so as to hold the lower tube (8) when the determination unit (37) determines that the liquid level is low. Infusion management device (1) described.
測部（３）をハウジング内に収納し、ドリップチャンバ
ー（１Ａ）の外周面に装着したことを特徴とする前記請
求項１ないし４に記載の輸液管理装置（１）。5. The liquid level detecting section (2) and / or the noise observing section (3) are housed in a housing and mounted on the outer peripheral surface of the drip chamber (1A). 4. The infusion management device (1) according to item 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001284695A JP2003088583A (en) | 2001-09-19 | 2001-09-19 | Transfusion management device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001284695A JP2003088583A (en) | 2001-09-19 | 2001-09-19 | Transfusion management device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003088583A true JP2003088583A (en) | 2003-03-25 |
Family
ID=19107969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001284695A Pending JP2003088583A (en) | 2001-09-19 | 2001-09-19 | Transfusion management device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003088583A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010540043A (en) * | 2007-09-24 | 2010-12-24 | マリンクロッド・インコーポレイテッド | Injection monitor |
| CN104998321A (en) * | 2015-08-24 | 2015-10-28 | 山东省立医院 | Infusion apparatus provided with liquid level monitoring device |
| GB2558558A (en) * | 2017-01-03 | 2018-07-18 | Buchanan Campbell Iain | An intravenous drip apparatus |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4554837A (en) * | 1984-05-04 | 1985-11-26 | Anatros Corporation | Reflective optical fluid pressure sensor |
| JPH02152462A (en) * | 1988-11-22 | 1990-06-12 | Fisher Scient Co | Monitor for contents of container |
| JPH1013348A (en) * | 1996-06-24 | 1998-01-16 | Yuseisho Tsushin Sogo Kenkyusho | Receiving device for space transmission optical communication |
| JPH1189931A (en) * | 1997-09-22 | 1999-04-06 | Kawasumi Lab Inc | Transfusion control device and system |
| JP2000342685A (en) * | 1999-05-31 | 2000-12-12 | Cosmo Denshi Kogyo:Kk | Sensor device for instillation set |
-
2001
- 2001-09-19 JP JP2001284695A patent/JP2003088583A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4554837A (en) * | 1984-05-04 | 1985-11-26 | Anatros Corporation | Reflective optical fluid pressure sensor |
| JPH02152462A (en) * | 1988-11-22 | 1990-06-12 | Fisher Scient Co | Monitor for contents of container |
| JPH1013348A (en) * | 1996-06-24 | 1998-01-16 | Yuseisho Tsushin Sogo Kenkyusho | Receiving device for space transmission optical communication |
| JPH1189931A (en) * | 1997-09-22 | 1999-04-06 | Kawasumi Lab Inc | Transfusion control device and system |
| JP2000342685A (en) * | 1999-05-31 | 2000-12-12 | Cosmo Denshi Kogyo:Kk | Sensor device for instillation set |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010540043A (en) * | 2007-09-24 | 2010-12-24 | マリンクロッド・インコーポレイテッド | Injection monitor |
| CN104998321A (en) * | 2015-08-24 | 2015-10-28 | 山东省立医院 | Infusion apparatus provided with liquid level monitoring device |
| GB2558558A (en) * | 2017-01-03 | 2018-07-18 | Buchanan Campbell Iain | An intravenous drip apparatus |
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