JPS6311968Y2 - - Google Patents
Info
- Publication number
- JPS6311968Y2 JPS6311968Y2 JP15294182U JP15294182U JPS6311968Y2 JP S6311968 Y2 JPS6311968 Y2 JP S6311968Y2 JP 15294182 U JP15294182 U JP 15294182U JP 15294182 U JP15294182 U JP 15294182U JP S6311968 Y2 JPS6311968 Y2 JP S6311968Y2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- limit switch
- output signal
- set knob
- adjustment dial
- 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.)
- Expired
Links
- 239000008280 blood Substances 0.000 claims description 10
- 210000004369 blood Anatomy 0.000 claims description 10
- 238000000502 dialysis Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 description 6
- 230000017531 blood circulation Effects 0.000 description 2
- 230000036772 blood pressure Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Description
【考案の詳細な説明】
本考案は、透析患者の血液が流れる血液回路内
で該血液の圧力低下に伴なつて生ずる該血液回路
所定部分の偏平化を検出し、警報を出したりロー
ラポンプを停止させるための所定の安全回路を作
動させることのできる陰圧モニタに関する。[Detailed description of the invention] The present invention detects flattening of a predetermined portion of the blood circuit that occurs due to a decrease in blood pressure in the blood circuit through which the blood of a dialysis patient flows, and issues an alarm or activates the roller pump. The present invention relates to a negative pressure monitor that can activate a predetermined safety circuit to stop the monitor.
第１図は、このような陰圧モニタの従来例の要
部構成断面図であり、図中、１は透析患者の血液
が内部に流され血液回路の一部を構成しているチ
ユーブ、２はチユーブ１が取り付けられるチユー
ブ取付部、３はチユーブ取付部２に取り付けられ
たチユーブ１の脱落を防止するチユーブセツトつ
まみ、４はチユーブ１の所定部分に当接し該チユ
ーブの偏平具合を検出する感圧部、５は感圧部４
の所定部分を内蔵し上下動させられることによつ
て感圧部４を上下動させる調節部、６は感圧部４
および調節部５の夫々所定部分が内蔵され感圧部
４の変位に応じて図示しない所定の安全回路に出
力信号を送出するリミツトスイツチ本体、７は該
本体６が固着されたリミツトスイツチ取付部、８
は陰圧モニタの前面パネル、９は中空内部に調節
部５の表面と螺合するネジが設けられ回転させら
れることによつて調節部５を上下動させてリミツ
トスイツチの動作点を調節する例えばドーナツ状
の調節ダイヤル、１０は調節ダイヤル９とリミツ
トスイツチ本体６の夫々所定部分の間に配設され
たスプリングである。第１図において、テユーブ
１のチユーブ取付部２への装脱に際しては、チユ
ーブセツトつまみ３を第１図の紙面上垂直の時計
方向に例えば45゜回転させると共に調節ダイヤル
９を例えば時計方向に回転させることにより、チ
ユーブ１に当接しているチユーブセツトつまみ３
と感圧部４とをチユーブ１から遠ざけてのち、チ
ユーブ取付部２からチユーブ１を取りはずしたり
チユーブ取付部２へチユーブ１を取りつけたりす
るようにしている。また、チユーブ１がチユーブ
取付部２に装着された状態で、感圧部４の変位が
上記調節ダイヤルによつて予め設定されている上
記動作点を超えたときに上記安全回路が作動させ
られ、チユーブ１が所定の偏平状態となつたとき
に警報が発せられたりローラポンプが停止させら
れたりするようになつている。 FIG. 1 is a cross-sectional view of the main parts of a conventional negative pressure monitor, in which 1 is a tube into which the blood of a dialysis patient is passed and forms part of the blood circuit; 3 is a tube set knob that prevents the tube 1 from falling off when attached to the tube mount 2; 4 is a pressure sensitive knob that comes into contact with a predetermined portion of the tube 1 to detect the flatness of the tube. part, 5 is pressure sensitive part 4
6 is an adjustment section that moves the pressure sensing section 4 up and down by being moved up and down.
and a limit switch main body in which predetermined parts of the adjusting section 5 are built in and sends an output signal to a predetermined safety circuit (not shown) according to the displacement of the pressure sensing section 4; 7 is a limit switch mounting section to which the main body 6 is fixed; 8;
Reference numeral 9 indicates the front panel of the negative pressure monitor, and numeral 9 has a screw provided in the hollow interior to be screwed into the surface of the adjustment section 5, and when rotated, the adjustment section 5 is moved up and down to adjust the operating point of the limit switch. A shaped adjustment dial 10 is a spring disposed between the adjustment dial 9 and a predetermined portion of the limit switch body 6, respectively. In FIG. 1, when attaching or detaching the tube 1 to or from the tube mounting portion 2, the tube set knob 3 is rotated, for example, 45 degrees clockwise perpendicular to the plane of the paper of FIG. 1, and the adjustment dial 9 is rotated, for example, clockwise. By this, the tube set knob 3 that is in contact with the tube 1
After moving the pressure sensitive part 4 away from the tube 1, the tube 1 is removed from the tube attachment part 2 or attached to the tube attachment part 2. The safety circuit is activated when the displacement of the pressure sensitive part 4 exceeds the operating point preset by the adjustment dial while the tube 1 is attached to the tube mounting part 2; When the tube 1 reaches a predetermined flat state, an alarm is issued and the roller pump is stopped.
然し乍ら、上記従来例においては、チユーブ１
をチユーブ取付部２に装着するとき上述のように
調節ダイヤル９を回転させるような構成であるた
め、該調節ダイヤルが前面パネル８に覆われてい
ないことと相まち、例えば−300mmHgでリミツト
スイツチが動作するよう予め動作点を設定してお
いてもその動作点が変動し易いという欠点があつ
た。また、チユーブ１内の血液流を監視する必要
がない場合（以下「監視不要の場合」という）に
は、調節ダイヤル９を回転させて感圧部４がチユ
ーブ１と接触しないようにしておかなければなら
ないという欠点もあつた。 However, in the above conventional example, tube 1
Since the adjustment dial 9 is rotated as described above when the is attached to the tube mounting part 2, the adjustment dial is not covered by the front panel 8, and the limit switch operates at, for example, -300 mmHg. Even if the operating point is set in advance so that Furthermore, if there is no need to monitor the blood flow within the tube 1 (hereinafter referred to as "case where monitoring is not required"), the adjustment dial 9 must be rotated to prevent the pressure sensitive part 4 from coming into contact with the tube 1. It also had the disadvantage of not having to be used.
本考案はかかる欠点に鑑みてなされたものであ
り、その目的は、上記欠点が全て除去された陰圧
モニタを提供することにある。 The present invention has been made in view of these drawbacks, and its purpose is to provide a negative pressure monitor in which all of the above drawbacks are eliminated.
本考案の特徴は、人工透析装置等に装着される
陰圧モニタにおいて、内部に流れる流体の圧力が
不足して生ずるチユーブの偏平度を検出する感圧
部をもつた第１リミツトスイツチの動作点を調節
する調節ダイヤルが陰圧モニタ前面パネルの背後
に配置されると共に、該チユーブに対する摩擦係
数の小さな接触部が前記感圧部に冠着され、且つ
該第１リミツトスイツチの出力信号が所定の安全
回路に伝達されるのを断続する第２リミツトスイ
ツチが設けられ、チユーブ取付部へ上記チユーブ
を装脱するためチユーブセツトつまみを所定角度
回転させたときに上記第２リミツトスイツチによ
つて上記出力信号伝達が遮断されるように構成し
たことにある。 The feature of this invention is that, in a negative pressure monitor attached to an artificial dialysis machine, etc., the operating point of the first limit switch, which has a pressure sensitive part that detects the flatness of the tube caused by insufficient pressure of the fluid flowing inside, is fixed. An adjustment dial for adjustment is disposed behind the front panel of the negative pressure monitor, a contact portion with a small friction coefficient for the tube is mounted on the pressure sensing portion, and the output signal of the first limit switch is connected to a predetermined safety circuit. A second limit switch is provided that cuts off and on the transmission of the output signal, and when the tube set knob is rotated by a predetermined angle in order to install and remove the tube from the tube mounting portion, the second limit switch cuts off the transmission of the output signal. The reason is that it is configured so that
以下、本考案について図を用いて詳細に説明す
る。第２図は本考案実施例の要部構成断面図であ
り、図中、第１図と同一記号は同一意味をもたせ
て使用しここでの重複説明は省略する。また、
３′はチユーブ取付部２に取り付けられたチユー
ブ１の脱落を防止すると共に後述の第２リミツト
スイツチ１３をオンオフさせるチユーブセツトつ
まみ、８′はチユーブセツトつまみ９が外部に現
われないように外側からチユーブセツトつまみ９
を覆つてなる前面パネル、１１は例えば四ふつ化
エチレン樹脂（PTEF）など上記チユーブ１に対
する摩擦係数の小さい材料でなり例えば鞍状に形
成されてなる接触部、１２はチユーブセツトつま
み３′と一体的に結合されてなる回転軸、１３は
上記監視不要の場合の状態となるように上記安全
回路への第１リミツトスイツチ６の出力信号伝達
を遮断させる第２のリミツトスイツチ、１４は一
端所定部分に第２リミツトスイツチ１３と当接す
る接触子１５を有しチユーブセツトつまみ３′
（即ち回転軸１２）の回転に応じて第２リミツト
スイツチ１３と接触子１５の接触がオンオフされ
るように回転軸１２へ一体的に結合されてなる部
材、１６はチユーブ取付部２と部材１４の夫々所
定部分の間に配設されたスプリングである。 Hereinafter, the present invention will be explained in detail using figures. FIG. 2 is a cross-sectional view of the main part of the embodiment of the present invention. In the figure, the same symbols as in FIG. 1 are used with the same meanings, and redundant explanation will be omitted here. Also,
3' is a tube set knob that prevents the tube 1 attached to the tube attachment part 2 from falling off and turns on and off a second limit switch 13, which will be described later; 8' is a tube set knob 9 that is inserted from the outside so that the tube set knob 9 does not appear outside.
A front panel 11 is made of a material having a low coefficient of friction against the tube 1, such as polytetrafluoroethylene resin (PTEF), and is formed in a saddle shape, for example, and a contact portion 12 is integrated with the tube set knob 3'. 13 is a second limit switch that cuts off the transmission of the output signal of the first limit switch 6 to the safety circuit so that the monitoring is not required; 14 is a second limit switch connected to a predetermined portion at one end; The tube set knob 3' has a contact 15 that comes into contact with the limit switch 13.
A member 16 is integrally connected to the rotary shaft 12 so that the contact between the second limit switch 13 and the contactor 15 is turned on and off according to the rotation of the rotary shaft 12. Each spring is disposed between predetermined portions.
以下、上記構成からなる本考案実施例の動作に
ついて説明する。最初、チユーブ１を取りはずす
場合について説明すると、第２図において、チユ
ーブセツトつまみ３′が第２図の紙面上垂直に例
えば時計方向へ45゜回転させられる（この状態を
以下「取りはずし状態」という）。該状態では、
接触子１５が第２リミツトスイツチ１３と接触し
なくなつて上記監視不要状態になると共に、チユ
ーブ１と接触していたチユーブセツトつまみ３′
の所定部分もチユーブ１から遠ざかる。従つて、
チユーブ１はチユーブ取付部２から片手でも簡単
に取りはずされるようになる。次に、チユーブ１
を取りつける場合について説明すると、第２図に
おいて、上述の取りはずし状態の場合と逆の手順
でチユーブ１がチユーブ取付部２に取りつけられ
てのち、上記チユーブセツトつまみ３′が第２図
の紙面上垂直に例えば反時計方向へ45°回転させ
られて第２図の状態となる（この状態を以下「取
り付け状態」という）。該状態では、接触子１５
が第２リミツトスイツチ１３と接触し上記監視不
要状態が解除されると共に、チユーブ１がチユー
ブセツトつまみ３′の所定部分によつて押えられ
脱落防止が図られる。また、チユーブ１内を流れ
る血液の圧力低下が生じチユーブ１が偏平化する
と、該偏平具合に応じて接触部１１および感圧部
４が降下する。該降下量が予め設定されている上
記動作点まで達すると、リミツトスイツチ本体６
からの出力信号によつて上記安全回路が作動させ
られ、警報が発せられたりローラポンプが停止さ
せられたりするようになる。 The operation of the embodiment of the present invention having the above configuration will be explained below. First, the case of removing the tube 1 will be described. In FIG. 2, the tube set knob 3' is rotated, for example, 45 degrees clockwise perpendicular to the plane of the paper of FIG. 2 (this state is hereinafter referred to as the "removal state"). In this state,
The contactor 15 no longer comes into contact with the second limit switch 13, and the above-mentioned monitoring becomes unnecessary, and the tube set knob 3', which had been in contact with the tube 1,
A predetermined portion of the tube 1 also moves away from the tube 1. Therefore,
The tube 1 can be easily removed from the tube attachment part 2 even with one hand. Next, tube 1
In FIG. 2, tube 1 is attached to tube attachment part 2 in the reverse order of the removal state described above, and then the tube set knob 3' is set vertically on the paper of FIG. 2. For example, it is rotated 45° counterclockwise to the state shown in FIG. 2 (this state is hereinafter referred to as the "installed state"). In this state, the contact 15
comes into contact with the second limit switch 13, and the above-mentioned monitoring unnecessary state is canceled, and the tube 1 is held down by a predetermined portion of the tube set knob 3' to prevent it from falling off. Further, when the pressure of the blood flowing in the tube 1 decreases and the tube 1 becomes flattened, the contact portion 11 and the pressure sensing portion 4 descend depending on the degree of flattening. When the amount of descent reaches the preset operating point, the limit switch body 6
The output signal from the pump activates the safety circuit to issue an alarm or stop the roller pump.
以上詳しく説明したような本考案の実施例によ
れば、前記従来例の欠点が全て除去された陰圧モ
ニタが実現できる。ここに、陰圧モニタとは、血
液を人工的に透析する人工透析装置に装着されて
使用される電子機器の１つであり、該人工透析装
置において透析患者の血液が流れる血液回路（具
体的には血液が流れるチユーブ）内で血液の圧力
低下に伴なつて生ずる該血液回路の所定部分の偏
平化を検出し警報を出したりローラポンプを停止
させるための安全回路を作動させることのできる
電子機器である。また、本考案の効果を詳述する
と次のようになる。即ち、調節ダイヤル９は陰圧
モニタ前面パネル８′の背後に位置するため、装
置の前面から調節ダイヤルが誤つて操作されるよ
うなことはないという利点を有する。また、調節
ダイヤル９を操作することなくチユーブセツトつ
まみ３′の操作だけでチユーブ１の着脱が可能で
あるため、予め設定した上記動作点が変動したり
するようなこともない。更に、調節ダイヤル９を
操作することなくチユーブセツトつまみ３′の操
作だけで監視状態のオンオフが可能であるため、
監視不要時の処置が容易になるという利点もあ
る。 According to the embodiment of the present invention as described in detail above, it is possible to realize a negative pressure monitor that eliminates all the drawbacks of the conventional example. Here, the negative pressure monitor is one of the electronic devices installed and used in an artificial dialysis machine that artificially dialyzes blood, and is used in the blood circuit (specifically An electronic device capable of detecting flattening of a predetermined portion of the blood circuit that occurs due to a drop in blood pressure within the tube through which the blood flows, and activates a safety circuit to issue an alarm or stop the roller pump. It is a device. Further, the effects of the present invention will be explained in detail as follows. That is, since the adjustment dial 9 is located behind the negative pressure monitor front panel 8', there is an advantage that the adjustment dial will not be accidentally operated from the front of the device. In addition, since the tube 1 can be attached and detached simply by operating the tube set knob 3' without operating the adjustment dial 9, there is no possibility that the preset operating point will fluctuate. Furthermore, the monitoring state can be turned on and off simply by operating the tube set knob 3' without operating the adjustment dial 9.
Another advantage is that it makes it easier to take measures when monitoring is not required.
第１図は従来の陰圧モニタの要部構成断面図、
第２図は本考案実施例の要部構成断面図である。
１……チユーブ、２……チユーブ取付部、３，
３′……チユーブセツトつまみ、４……感圧部、
６……リミツトスイツチ本体、８，８′……前面
パネル、９……調節ダイヤル、１１……接触部、
１２……回転軸、１５……接触子、１３……第２
リミツトスイツチ。
Figure 1 is a sectional view of the main parts of a conventional negative pressure monitor.
FIG. 2 is a cross-sectional view of the main part of the embodiment of the present invention. 1...Tube, 2...Tube mounting part, 3,
3'...Tube set knob, 4...Pressure sensitive section,
6... Limit switch body, 8, 8'... Front panel, 9... Adjustment dial, 11... Contact part,
12...rotating shaft, 15...contact, 13...second
Limit switch.
Claims (1)
るチユーブと、該チユーブがチユーブ取付部から
脱落するのを防ぐチユーブセツトつまみと、前記
チユーブの偏平度を検出する感圧部を有する第１
リミツトススイツチと、該リミツトスイツチの動
作点を調節する調節ダイヤルとを具備し、血液を
人工的に透析する人工透析装置に装着されて使用
される電子機器の１つであつて、前記偏平度が前
記動作点を超えたときに前記第１リミツトスイツ
チの出力信号によつて安全回路が作動するように
構成された陰圧モニタにおいて、前記調節ダイア
ルが前面パネルの背後に配置されると共に、前記
チユーブに対する摩擦係数の小さな接触部が前記
感圧部に冠着され且つ前記第１リミツトスイツチ
の出力信号が前記安全回路に伝達されるのを遮断
する第２のリミツトスイツチが設けられ、前記チ
ユーブを前記チユーブ取付部へ装脱するため前記
チユーブセツトつまみを一定角度回転させると、
該第２リミツトスイツチによる前記出力信号の伝
達の遮断が行われるように構成したことを特徴と
する陰圧モニタ。 A first tube having a tube that flattens when the pressure of the fluid flowing therein decreases, a tube set knob that prevents the tube from falling off from the tube mounting portion, and a pressure sensing portion that detects the degree of flatness of the tube.
One of the electronic devices that is equipped with a limit switch and an adjustment dial that adjusts the operating point of the limit switch, and is used by being attached to an artificial dialysis machine that artificially dialyzes blood, and the flatness is In the negative pressure monitor configured such that a safety circuit is activated by the output signal of the first limit switch when the operating point is exceeded, the adjustment dial is disposed behind the front panel, and A second limit switch is provided, a contact portion having a small coefficient of friction is attached to the pressure sensing portion, and the second limit switch cuts off the output signal of the first limit switch from being transmitted to the safety circuit, and the tube is connected to the tube mounting portion. When the tube set knob is rotated by a certain angle in order to load and unload the
A negative pressure monitor characterized in that the second limit switch is configured to cut off transmission of the output signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15294182U JPS5957946U (en) | 1982-10-08 | 1982-10-08 | Negative pressure monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15294182U JPS5957946U (en) | 1982-10-08 | 1982-10-08 | Negative pressure monitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5957946U JPS5957946U (en) | 1984-04-16 |
| JPS6311968Y2 true JPS6311968Y2 (en) | 1988-04-06 |
Family
ID=30338512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15294182U Granted JPS5957946U (en) | 1982-10-08 | 1982-10-08 | Negative pressure monitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5957946U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013066538A (en) * | 2011-09-21 | 2013-04-18 | Nikkiso Co Ltd | Pressure detection part |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008034154B4 (en) * | 2008-07-22 | 2011-08-25 | Fresenius Medical Care Deutschland GmbH, 61352 | Method for operating a pressure measuring device, device with at least one pressure measuring device, device with such a device |
| JP5356833B2 (en) * | 2009-01-08 | 2013-12-04 | 日機装株式会社 | Pressure detector |
| JP5337618B2 (en) * | 2009-08-04 | 2013-11-06 | 日機装株式会社 | Calibration method of blood pressure removal detecting means and blood purification device |
-
1982
- 1982-10-08 JP JP15294182U patent/JPS5957946U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013066538A (en) * | 2011-09-21 | 2013-04-18 | Nikkiso Co Ltd | Pressure detection part |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5957946U (en) | 1984-04-16 |
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