JPS62157544U

JPS62157544U -

Info

Publication number: JPS62157544U
Application number: JP4792086U
Authority: JP
Priority date: 1986-03-31
Filing date: 1986-03-31
Publication date: 1987-10-06
Anticipated expiration: 2001-03-31
Also published as: JPH0536433Y2

Description

[Brief explanation of the drawing]

第１図はこの考案の人工透析装置の一実施例を
示すブロツク系統図、第２図はこの考案の他の実
施例の要部を示すブロツク系統図、第３図は従来
の人工透析装置のブロツク系統図、第４図は第３
図の従来装置の動作の概要を説明するための図、
第５図は第３図の従来装置の血液回路側圧力、透
析液回路側圧力、ＴＭＰの変化特性を示す図、第
６図は第３図の従来装置の透析モードにおけるＴ
ＭＰ制御の不感帯幅を説明するための図である。１，７……血液チユーブ、２：血液ポンプ、３
，５：チヤンバー、４：透析器、６：絞り部、８
：透析液供給部、１０：定流量弁、１１：入口弁
、１２：入口ライン、１３：出口ライン、１４：
出口弁、１５：ドレイン、１６：バイパス弁、１
７：ピストンポンプ、１８：歯車部、１９：ステ
ツピングモータ、２３，２５：圧力センサ、３０
：ＣＰＵ、３１：ＲＯＭ、３２：入出力回路（Ｉ
／Ｏ）、３３，３５，４１，５１：ドライバー、
３４：設定スイツチ、３６，３８：Ａ／Ｄ変換器
、５０：陰圧ポンプ。 Fig. 1 is a block system diagram showing one embodiment of the artificial dialysis device of this invention, Fig. 2 is a block system diagram showing the main parts of another embodiment of this invention, and Fig. 3 is a diagram of a conventional artificial dialysis device. Block system diagram, Figure 4 is the 3rd
A diagram for explaining an overview of the operation of the conventional device shown in FIG.
FIG. 5 is a diagram showing the change characteristics of the blood circuit side pressure, dialysate circuit side pressure, and TMP of the conventional device shown in FIG. 3, and FIG.
FIG. 3 is a diagram for explaining the dead zone width of MP control. 1, 7...Blood tube, 2: Blood pump, 3
, 5: Chamber, 4: Dialyzer, 6: Squeezing part, 8
: Dialysate supply part, 10: Constant flow valve, 11: Inlet valve, 12: Inlet line, 13: Outlet line, 14:
Outlet valve, 15: Drain, 16: Bypass valve, 1
7: Piston pump, 18: Gear part, 19: Stepping motor, 23, 25: Pressure sensor, 30
: CPU, 31: ROM, 32: Input/output circuit (I
/O), 33, 35, 41, 51: Driver,
34: Setting switch, 36, 38: A/D converter, 50: Negative pressure pump.

Claims

[Scope of Claim for Utility Model Registration] During dialysis, both the supply of dialysate to the dialyzer and the discharge of dialysate from the dialyzer are stopped for a short time, and the dialysate is pumped at a preset ultra-overflow rate by a pump. A TMP measurement mode is provided in which the TMP (transmembrane pressure) at that time is measured, and the supply of dialysate to the dialyzer and the discharge of dialysate from the dialyzer are restarted, and the TMP after restarting is set. In an artificial dialysis machine equipped with a dialysis mode in which dialysis is performed by controlling blood pressure or dialysate pressure to be equal to the measured value obtained in the TMP measurement mode, the stable state of TMP is determined in the TMP measurement mode. a means for detecting, a moving average value of TMP at the time of detection as the measured value of TMP, and a moving average value of TMP in the dialysis mode as the TM after restarting;
An artificial dialysis apparatus comprising: a moving average means for setting P; and means for setting a dead zone width in TMP control in the dialysis mode according to the measured TMP value.