JP2019198456A - 圧力検出器 - Google Patents
圧力検出器 Download PDFInfo
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- JP2019198456A JP2019198456A JP2018094465A JP2018094465A JP2019198456A JP 2019198456 A JP2019198456 A JP 2019198456A JP 2018094465 A JP2018094465 A JP 2018094465A JP 2018094465 A JP2018094465 A JP 2018094465A JP 2019198456 A JP2019198456 A JP 2019198456A
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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
- A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
- A61M1/3621—Extra-corporeal blood circuits
- A61M1/3639—Blood pressure control, pressure transducers specially adapted therefor
- A61M1/3641—Pressure isolators
-
- 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
- A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
- A61M1/1601—Control or regulation
- A61M1/1603—Regulation parameters
- A61M1/1605—Physical characteristics of the dialysate fluid
-
- 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
- A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/0007—Fluidic connecting means
- G01L19/0023—Fluidic connecting means for flowthrough systems having a flexible pressure transmitting element
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/14—Housings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
- G01L7/02—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges
- G01L7/08—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges of the flexible-diaphragm type
-
- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3331—Pressure; Flow
-
- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/75—General characteristics of the apparatus with filters
- A61M2205/7536—General characteristics of the apparatus with filters allowing gas passage, but preventing liquid passage, e.g. liquophobic, hydrophobic, water-repellent membranes
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- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- Hematology (AREA)
- Anesthesiology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Cardiology (AREA)
- Urology & Nephrology (AREA)
- Emergency Medicine (AREA)
- External Artificial Organs (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
Description
第1の実施形態に適用される血液浄化装置は、透析治療を行うための透析装置から成り、図1に示すように、動脈側血液回路1及び静脈側血液回路2から成る血液回路と、動脈側血液回路1及び静脈側血液回路2の間に介装されて血液回路を流れる血液を浄化するダイアライザ3(血液浄化器)と、血液ポンプ4と、静脈側血液回路2に配設されたエアトラップチャンバ5と、ダイアライザ3に透析液を供給及びダイアライザ3からの排液を排出させる透析装置本体6と、置換液としての生理食塩液を血液回路に供給し得る生理食塩液供給ラインL3(置換液供給ライン)と、置換液としての生理食塩液を収容した収容手段7とから主に構成されている。
本実施形態に係る圧力検出器は、第1の実施形態と同様の血液浄化装置に適用されるもので、図1に示すように、動脈側血液回路1における先端(動脈側穿刺針aが取り付けられるコネクタ)と血液ポンプ4との配設部位との間の位置に接続され、動脈側血液回路1を流れる血液の圧力を検出し得るよう構成されている。
本実施形態に係る圧力検出器は、第1の実施形態と同様の血液浄化装置に適用されるもので、図1に示すように、静脈側血液回路2におけるダイアライザ3とエアトラップチャンバ5との間の位置に接続され、静脈側血液回路2(血液回路)を流れる血液の圧力を検出し得るよう構成されている。
2 静脈側血液回路
3 ダイアライザ(血液浄化器)
4 血液ポンプ
5 エアトラップチャンバ
6 透析装置本体
7 収容手段
8 エアトラップチャンバ
9 クランプ手段
10 圧力検出器
L1 透析液導入ライン
L2 透析液排出ライン
L3 生理食塩液供給ライン
C ケース
Ca 液相部ケース
Ca1 流入口
Ca2 流出口
Cb 気相部ケース
Cb1 開口
Cb2 リブ
Cb3 凸部
Cb4 凹部
C1 流入ポート
C1a 流路部
C1b 接続部
C2 流出ポート
C2a 流路部
C2b 接続部
C3 接続ポート
M 膜部材
P 圧力検出器
S1 液相部
S2 気相部
K 配管部
B 疎水性膜
R 流通路(保持部)
Claims (7)
- 液体の流路に接続可能なケースと、
該ケース内に取り付けられ、前記流路の液体を充填し得る液相部と、気体を充填し得る気相部とを区画するとともに、前記液相部に充填された液体の圧力に応じて変位可能な膜部材と、
を具備し、前記気相部の圧力を検出することにより前記流路における液体の圧力を検出する圧力検出器において、
前記気相部は、前記膜部材の変位に応じて気体を流入又は流出させ得る開口が形成されるとともに、前記膜部材が前記気相部側に変位する過程で前記開口による気体の流入又は流出を保持し得る保持部が形成されたことを特徴とする圧力検出器。 - 前記保持部は、前記開口と連通した流通路から成り、前記膜部材が前記気相部側に変位する過程において、前記流通路にて気体の流通を許容させることにより前記開口による気体の流入又は流出を保持することを特徴とする請求項1記載の圧力検出器。
- 前記流通路は、前記気相部における前記開口の周りに形成されたリブ又は溝により形成されることを特徴とする請求項2記載の圧力検出器。
- 前記流通路は、前記気相部における前記開口の周りに形成された凹部と、前記開口を含みつつ前記凹部を覆うとともに気体の通過を許容する許容部材とにより構成されたことを特徴とする請求項2記載の圧力検出器。
- 前記許容部材は、気体の通過を許容しつつ液体の通過を遮断する疎水性膜から成ることを特徴とする請求項4記載の圧力検出器。
- 前記流通路は、前記膜部材における気相部側の表面に形成されたリブ又は溝により形成されることを特徴とする請求項2記載の圧力検出器。
- 請求項1〜6の何れか1つの圧力検出器が接続されたことを特徴とする血液回路。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018094465A JP6639559B2 (ja) | 2018-05-16 | 2018-05-16 | 圧力検出器 |
PCT/JP2019/019396 WO2019221205A1 (ja) | 2018-05-16 | 2019-05-15 | 圧力検出器 |
EP19802757.5A EP3744364B1 (en) | 2018-05-16 | 2019-05-15 | Pressure detector |
CN201980032037.3A CN112218667B (zh) | 2018-05-16 | 2019-05-15 | 压力检测器 |
US17/093,825 US11931500B2 (en) | 2018-05-16 | 2020-11-10 | Pressure detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018094465A JP6639559B2 (ja) | 2018-05-16 | 2018-05-16 | 圧力検出器 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2019233377A Division JP7033578B2 (ja) | 2019-12-24 | 2019-12-24 | 圧力検出器 |
Publications (2)
Publication Number | Publication Date |
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JP2019198456A true JP2019198456A (ja) | 2019-11-21 |
JP6639559B2 JP6639559B2 (ja) | 2020-02-05 |
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Application Number | Title | Priority Date | Filing Date |
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JP2018094465A Active JP6639559B2 (ja) | 2018-05-16 | 2018-05-16 | 圧力検出器 |
Country Status (5)
Country | Link |
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US (1) | US11931500B2 (ja) |
EP (1) | EP3744364B1 (ja) |
JP (1) | JP6639559B2 (ja) |
CN (1) | CN112218667B (ja) |
WO (1) | WO2019221205A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP6639559B2 (ja) | 2018-05-16 | 2020-02-05 | 日機装株式会社 | 圧力検出器 |
JP6637107B2 (ja) | 2018-05-16 | 2020-01-29 | 日機装株式会社 | 圧力検出器 |
JP6637108B2 (ja) | 2018-05-16 | 2020-01-29 | 日機装株式会社 | 圧力検出器 |
JP6694475B2 (ja) | 2018-06-22 | 2020-05-13 | 日機装株式会社 | 医療器具の製造方法及び製造装置 |
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- 2019-05-15 CN CN201980032037.3A patent/CN112218667B/zh active Active
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CN112218667A (zh) | 2021-01-12 |
JP6639559B2 (ja) | 2020-02-05 |
CN112218667B (zh) | 2024-02-02 |
US11931500B2 (en) | 2024-03-19 |
US20210052797A1 (en) | 2021-02-25 |
WO2019221205A1 (ja) | 2019-11-21 |
EP3744364B1 (en) | 2024-04-03 |
EP3744364A1 (en) | 2020-12-02 |
EP3744364A4 (en) | 2021-05-19 |
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