WO2007119786A1 - 重量検出装置及びバランス制御装置 - Google Patents
重量検出装置及びバランス制御装置 Download PDFInfo
- Publication number
- WO2007119786A1 WO2007119786A1 PCT/JP2007/058075 JP2007058075W WO2007119786A1 WO 2007119786 A1 WO2007119786 A1 WO 2007119786A1 JP 2007058075 W JP2007058075 W JP 2007058075W WO 2007119786 A1 WO2007119786 A1 WO 2007119786A1
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- WO
- WIPO (PCT)
- Prior art keywords
- weight
- filtrate
- replacement fluid
- dialysate
- holding means
- Prior art date
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G17/00—Apparatus for or methods of weighing material of special form or property
- G01G17/04—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes
-
- 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
- A61M1/1613—Profiling or modelling of patient or predicted treatment evolution or outcome
-
- 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
- A61M1/1621—Constructional aspects thereof
- A61M1/1643—Constructional aspects thereof with weighing of fresh and used dialysis 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
- A61M1/34—Filtering material out of the blood by passing it through a membrane, i.e. hemofiltration or diafiltration
- A61M1/3413—Diafiltration
- A61M1/3417—Diafiltration using distinct filters for dialysis and ultra-filtration
-
- 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
- A61M1/34—Filtering material out of the blood by passing it through a membrane, i.e. hemofiltration or diafiltration
- A61M1/342—Adding solutions to the blood, e.g. substitution solutions
- A61M1/3424—Substitution fluid path
- A61M1/3437—Substitution fluid path downstream of the filter, e.g. post-dilution with filtrate
-
- 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
- A61M1/34—Filtering material out of the blood by passing it through a membrane, i.e. hemofiltration or diafiltration
- A61M1/342—Adding solutions to the blood, e.g. substitution solutions
- A61M1/3441—Substitution rate control as a function of the ultrafiltration rate
-
- 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
- A61M1/34—Filtering material out of the blood by passing it through a membrane, i.e. hemofiltration or diafiltration
- A61M1/342—Adding solutions to the blood, e.g. substitution solutions
- A61M1/3441—Substitution rate control as a function of the ultrafiltration rate
- A61M1/3451—Substitution rate control as a function of the ultrafiltration rate the difference in weight between both ultra-filtrate and substitution reservoir being used as control signal
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S128/00—Surgery
- Y10S128/13—Infusion monitoring
Definitions
- Weight detection device and balance control device are Weight detection device and balance control device
- the present invention relates to a weight detection device that detects the weight of an object and a balance control device that balances the weights of a plurality of objects.
- CHF continuous slow hemofiltration
- CHDF continuous hemofiltration
- replenishment fluid a method of continuously and slowly replenishing the patient's blood with a predetermined replenisher (hereinafter referred to as “replacement fluid”).
- replacement fluid waste and solvent in the discarded blood are called filtrate.
- CHDF is a method for improving small molecule removal ability in CHF, and is a method of performing dialysis treatment in addition to CHF. That is, CHDF uses a blood purifier with a filtration membrane and a permeable membrane, supplies dialysate to the blood purifier, and is still contained in blood purified by filtration. Waste is removed from the blood by moving the material through the dialysis membrane into the dialysate. Then, the blood purified by filtration and dialysis is returned to the patient and the replacement fluid is replenished to the patient's blood continuously and slowly. In CHDF, waste products and solvents in blood obtained by filtration and used dialysate are called filtrate.
- the blood purification system includes a first method, a second method (see, for example, Patent Document 1), and a third method.
- a second method see, for example, Patent Document 1
- a third method the blood purification system of the first method, the second method, and the third method will be described in order.
- FIG. 1 is a configuration diagram of a blood purification system that maintains the difference between the weight of dialysate and replacement fluid and the weight of filtrate within a predetermined range.
- the blood pump 6 moves the blood taken out from the patient A to the blood purification device 10 via the arterial blood circuit 11.
- the blood purifier 10 is provided with a filtration membrane, and the blood purifier 10 dehydrates the blood taken out from the patient A using the filtration membrane.
- the dialysate pump 7 moves the dialysate contained in the dialysate container 3 to the blood purifier 10 via the dialysate supply path 12.
- the blood purifier 10 removes water and waste products from the blood through a filtration (dialysis) membrane.
- the blood purified by the blood purifier 10 returns to the patient A via the venous blood circuit 13.
- the replacement fluid pump 8 is housed in the replacement fluid container 4 and mixes the replacement fluid into the venous blood circuit 13 and injects it into the patient A together with the purified blood.
- the filtrate pump 9 filters the waste in the blood obtained from the blood purifier 10 and the used dialysate from the blood purifier 10 through the filtrate disposal path 14 as filtrate. Move to liquid container 5.
- the dialysate / replacement fluid measuring device 91 measures the weight of the dialysate contained in the dialysate container 3 and the replacement fluid contained in the replacement fluid container 4, and the filtrate weight meter 92 is contained in the filtrate container 5. Measure the weight of the filtrate.
- the control unit 93 maintains the difference between the weight of the dialysate and the replacement fluid measured by the dialysate / replacement weight measuring device 91 and the weight of the filtrate measured by the filtrate weight measuring device 92 within a predetermined range. Thus, the operation of the dialysate pump 7, the replacement fluid pump 8, and the filtrate pump 9 is controlled. This balances the flow rate of blood drawn from the patient with the flow rate of blood returned to the patient and the replacement fluid injected into the patient.
- FIG. Figure 2 shows the calculation of the flow rate of the permeate used, the flow rate of the replacement fluid used, and the flow rate of the discarded filtrate by using different weight measuring instruments.
- Blood purification to keep the value of It is a block diagram of a stem.
- the second type blood purification system shown in FIG. 2 differs from the first type blood purification system shown in FIG. 1 in the following points. That is, in the second type blood purification system, the dialysate to be used is fractionated and stored in the dialysate fractionation container 101, and the fractionated permeate weight meter 102 is accommodated in the dialysate fractionation container 101. Measure the weight of the dialysate.
- the control unit 107 calculates the flow rate of the dialysate used by calculating the time-dependent change in the weight of the dialysate measured by the preparative dialysate weight measuring device 102, and calculates the calculated dialysate flow rate.
- the operation of the dialysate pump 7 such as the number of revolutions is controlled so as to maintain the flow rate at a predetermined flow rate.
- the replacement fluid to be used is collected and stored in the replacement fluid sorting container 103, and the sorted replacement fluid weight measuring device 104 measures the weight of the replacement fluid stored in the replacement fluid sorting container 103.
- the control unit 107 calculates the flow rate of the replacement fluid being used by calculating the temporal change in the weight of the replacement fluid measured by the preparative replacement fluid weight measuring device 104, and the calculated flow rate of the replacement fluid is a predetermined flow rate.
- the operation of the replacement fluid pump 8 such as the number of revolutions is controlled so that the pressure is maintained.
- the discarded filtrate is collected in the filtrate collection container 105, and the collected filtrate weight measuring device 106 measures the weight of the filtrate stored in the filtrate collection container 105.
- the control unit 107 calculates the flow rate of the discarded filtrate by calculating the temporal change in the weight of the filtrate measured by the preparative filtrate weight measuring device 106, and calculates the flow rate of the calculated filtrate.
- the operation of the filtrate pump 9 is controlled so as to keep the flow rate at a predetermined flow rate. This balances the flow of blood drawn from the patient with the flow of blood returned to the patient and the replacement fluid injected into the patient.
- the second method of blood purification system described above calculates the flow rate of dialysate used, the flow rate of replacement fluid used, and the flow rate of discarded filtrate by using different weight measuring devices. Maintain the flow rate at the specified value for each liquid.
- the third type blood purification system uses the same weight measuring device for the flow rate of the dialysate used, the flow rate of the replacement fluid used, and the flow rate of the discarded filtrate. And each flow rate is held at a predetermined value for each liquid. This balances the flow rate of blood taken from the patient with the flow rate of blood returned to the patient and the fluid supplied to the patient.
- Patent Document 1 Japanese Patent Laid-Open No. 9-239024 Disclosure of the invention
- the difference between the weight of the dialysate and the replacement fluid and the weight of the filtrate is maintained within a predetermined range, whereby the flow rate of the blood taken out from the patient is reduced.
- the blood flow back to the patient and the flow rate of the replacement fluid injected into the patient are balanced.
- the amount and flow rate of dialysate and replacement fluid used cannot be measured at all or accurately. Therefore, when treating with CHDF, it is not clear how much to replenish when dialysate or replacement fluid is replenished during treatment. Also, the amount to be prepared for the next treatment is unknown. As a result, excessive dialysis fluid and replacement fluid must be prepared so that dialysate and replacement fluid do not run out during treatment.
- the flow rate of the dialysate and the replacement fluid to be used, and further the flow rate of the filtrate to be discarded are calculated. There is an error between the flow rate and the actual flow rate. Therefore, even if the calculated flow rate is maintained at a predetermined value corresponding to the liquid, the flow rate of blood taken out from the patient, the flow rate of blood returned to the patient, and the flow rate of replacement fluid injected into the patient There is a high possibility that it cannot be controlled to balance the above. If balance is lost, the patient's condition worsens.
- An object of the present invention is to provide a weight detection device used for individually acquiring accurate weights of a plurality of objects, and a balance control device that balances the weights of the plurality of objects with high accuracy.
- a weight detection device of the present invention includes a support member, a trunk body having one end fixed to the support member and the other end being free, and the trunk N holding means for holding an object provided at each of n points (n is a natural number of 2 or more) in the longitudinal direction of the trunk on one side surface of the body; Most free end
- the trunk according to the total weight of the objects held by the holding means from the holding means located to the m-th holding means from the support member (m is a natural number from 1 to n ) N strain amount detection means provided on the trunk corresponding to each of the n totals, and n based on the detection results obtained by each strain amount detection means.
- Weight calculating means for calculating the total of the pieces.
- the weight detection device of the present invention calculates the total. Therefore, by monitoring the total calculated by the weight detection device of the present invention, the amount of decrease in the object held by the second holding means from the support member and the holding means closest to the support member are reduced. The amount of increase / decrease of the object to be held can be balanced. That is, the weight detection device of the present invention is used to balance the weights of a plurality of objects.
- the weight detection device of the present invention acquires the weight of the object held by the holding means positioned closest to the free end of the trunk. At the same time, the total weight of the objects held by the two holding means is obtained. By subtracting the weight of the object held by the holding means located closest to the free end of the trunk from the sum, it is possible to obtain the weight of the object held by the holding means closest to the support member S can. That is, the weight detection device of the present invention is used to acquire the weights of a plurality of objects.
- the weight calculating means calculates the weight of the object held by each holding means based on the detection result obtained by each distortion amount detecting means.
- the weight detection apparatus of the present invention may further include display means for displaying a calculation result obtained by the weight calculation means.
- the trunk is a member in which the ends of each of the n rod-shaped members are connected, and each of the rod-shaped members extends in the longitudinal direction of the trunk without penetrating the one side surface. A hole penetrating in an orthogonal direction is provided, and the holding means is provided for each rod-like member. It has been.
- the shape of the cross section of the hole is symmetrical with respect to a line that bisects a line segment orthogonal to the longitudinal direction of the trunk of the cross section, and is along the longitudinal direction of the cross section. Symmetric with respect to the line that bisects the line.
- the size of the end portion on the side close to the support member and the end portion on the far side of the cross section is between the end portion on the close side and the end portion on the far side of the cross section. It is larger than the size of this part.
- the strain amount detection means is a Roberval type strain amount detection means provided for each of the rod-shaped members.
- the trunk body passes through the one side surface portion between the holding means closest to the support member and the support member and between the two adjacent holding means. Rather, a hole penetrating in a direction perpendicular to the longitudinal direction of the trunk is provided.
- the shape of the cross section of the hole is symmetrical with respect to a line that bisects a line segment orthogonal to the longitudinal direction of the trunk of the cross section, and is along the longitudinal direction of the cross section. Symmetric with respect to the line that bisects the line.
- the size of the near end, the side end portion and the far end relative to the support member of the cross section, and the size of the end portion on the side are the end portions on the near side and the far side end of the cross section It is larger than the size of the part between the parts.
- the strain amount detection means is a Robert-type strain amount detection means, and all the strain amount detection means include the holding means and the support member of the trunk that are closest to the support member. And between the adjacent two holding means.
- the weight detection apparatus of the present invention further includes an increase / decrease for calculating an increase / decrease amount from the initial state of the weight of the object held by each holding means based on the calculation result obtained by the weight calculating means. You may provide a quantity calculation means.
- the weight detection device of the present invention further includes a temporal change for calculating a temporal change amount of the weight of the object held by each holding means based on the calculation result obtained by the weight calculating means. You may provide a quantity calculation means.
- the balance control device of the present invention includes each of the above-described holding means, which is obtained by the weight detection device of the present invention, from the holding means positioned closest to the free end of the trunk to the holding means closest to the support member. An acquisition means for acquiring a total weight of the objects held by the holding means; and a weight of the object held by each of the holding means so that the total acquired by the acquisition means is held within a predetermined range. And a control means for controlling the amount of change over time.
- the number of holding means is three, the first holding means holds filtrate, the second holding means holds replacement fluid, and the third holding means holds dialysate.
- the control means holds the sum of the weight of the filtrate, the weight of the replacement fluid, and the weight of the dialysate obtained by the obtaining means within a predetermined range, thereby The time increase of the filtrate is balanced with the time decrease of the replacement fluid and the dialysate.
- the number of the holding means is two, the first holding means holds filtrate, the second holding means holds replacement fluid, and the control means acquires by the acquisition means By maintaining the sum of the weight of the filtrate and the weight of the replacement fluid within a predetermined range, the amount of time increase of the filtrate and the amount of time decrease of the replacement fluid are balanced.
- the present invention can provide a weight detection device used to acquire the weights of a plurality of objects, and a balance control device that balances the weights of the plurality of objects.
- FIG. 1 is a block configuration diagram of a conventional blood purification system.
- FIG. 2 is a block configuration diagram of a conventional blood purification system.
- FIG. 3 is a configuration diagram of the blood purification system according to the first embodiment.
- FIG. 4 is a configuration diagram of the weight detection device 1 according to the first embodiment.
- FIG. 5A is a diagram showing an increase in the weight of the filtrate to be discarded over time.
- FIG. 5B shows the decrease in the weight of replacement fluid and dialysate used over time. It is a figure.
- FIG. 6 is a diagram showing an example of a screen displaying each calculation result displayed by the display unit 33 of the weight detection device 1 according to the first embodiment.
- FIG. 7 is a flowchart showing each procedure of the operation of the blood purification system according to the first embodiment.
- FIG. 8 is a partial configuration diagram of a first modification of weight detection device 1 according to the first embodiment.
- FIG. 9 is a partial configuration diagram of a second modification of weight detection device 1 according to the first embodiment.
- FIG. 10 is a partial configuration diagram of the weight detection device 1 according to the second embodiment.
- FIG. 3 is a configuration diagram of the blood purification system according to the first embodiment.
- the blood purification system according to Embodiment 1 is a system that is used when, for example, a patient A with renal insufficiency is treated with CHDF to purify the blood of patient A, and Balances the flow rate of dialysate and replacement fluid used in treatment with the flow rate of discarded filtrate, and obtains the time variation of the dialysate, replacement fluid, and filtrate, that is, the flow rate, etc. And display the system.
- the blood purification system of Embodiment 1 includes a weight detection device 1, a balance control device 2, a dialysate container 3, a replacement fluid container 4, a filtrate container 5, and a blood pump 6.
- the weight detection device 1 is used to balance the flow rate of dialysate and replacement fluid to be used and the flow rate of discarded filtrate, and the weight and time of each of the dialysate, replacement fluid, and filtrate. It is a device that acquires a flow rate that is a change amount and displays an acquisition result. A specific configuration of the weight detection apparatus 1 will be described later with reference to FIG.
- the balance control device 2 Based on the results obtained by the weight detection device 1, the balance control device 2 adjusts the dialysate pump 7 and the replacement fluid pump so that the flow rate of the dialysate and replacement fluid used and the flow rate of the discarded filtrate are balanced. 8 and a device for controlling the operation of the filtrate pump 9.
- the balance control device 2 includes an acquisition unit 41 that acquires the result obtained by the weight detection device 1, and a control unit 42 that controls operations of the dialysate pump 7, the replacement fluid pump 8, and the filtrate pump 9.
- the dialysate container 3 is a container for storing the dialysate used
- the replacement fluid container 4 is a container for storing the replacement fluid to be used
- the filtrate container 5 is a container for storing the discarded filtrate. is there.
- the permeate container 3, the replacement fluid container 4, and the filtrate container 5 are provided for the upper part of the container.
- the dialysate container 3 is held by using the above-mentioned one by the dialysate holder 26 of the weight detection device 1.
- the replacement fluid container 4 and the filtrate container 5 are held by using the above-mentioned points by the replacement fluid holding unit 25 and the filtrate holding unit 24 of the weight detection device 1, respectively.
- the blood pump 6 is a component that moves the blood taken from the patient A to the blood purifier 10, and the dialysate pump 7 is accommodated in the dialysate container 3, and the dialysate is stored in the blood purifier 10 It is a component to be moved to.
- the replacement fluid pump 8 is a component that moves the replacement fluid contained in the replacement fluid container 4 to the venous blood circuit 13, thereby mixing the replacement fluid into the blood purified by the blood purifier 10. Is a component that moves the filtrate obtained as a result of the filtration process and the permeation process (blood purification process) in the blood purifier 10 to the filtrate container 5.
- the blood purifier 10 is provided with a filtration membrane and a dialysis membrane inside, and filters the blood taken out from the patient A using the filtration membrane, and from the dialysis membrane and the dialysate container 3. This is a component that performs dialysis using the dialysate. That is, the blood purifier 10 is a component that purifies blood taken from the patient A.
- the arterial blood circuit 11 is a movement path of blood taken from the patient A to the blood purifier 10, and the dialysate supply path 12 is dialysate. This is a movement path of the dialysate contained in the container 3 to the blood purifier 10.
- the venous blood circuit 13 is a blood movement path when the blood purified by the blood purifier 10 is returned to the patient A, and the filtrate disposal path 14 is the filtrate from the blood purifier 10 to the filtrate container 5. This is the travel route.
- the arterial blood circuit 11, the dialysate supply path 12, the venous blood circuit 13, and the filtrate disposal path 14 are tubes made of a predetermined synthetic resin.
- FIG. 4 is a configuration diagram of the weight detection device 1 according to the first embodiment.
- the weight detection device 1 of the first embodiment is used to balance the flow rate of the dialysate and replacement fluid used and the flow rate of the discarded filtrate. It is a device that acquires the weight of each liquid and the flow rate that is the amount of change over time, and displays the acquisition results.
- the weight detection device 1 includes a base 21, a support member 22, a trunk 23, a filtrate holding unit 24, a replacement fluid holding unit 25, and a dialysate holding unit 26.
- FIG. 4 also shows a balance control device 2, a dialysate container 3, a replacement fluid container 4, and a filtrate container 5.
- the base 21 is, for example, a flat plate made of aluminum.
- the support member 22 is, for example, a rod-shaped member made of aluminum, and is fixed on the base 21 so as to be orthogonal to the base 21.
- the trunk body 23 is fixed to the support member 22 at one end in a horizontal state so as to be orthogonal to the support member 22, that is, parallel to the base 21. It is a square bar that is free. As shown in FIG. 4, the trunk body 23 has one end of the first square bar member 23a and one end of the second square bar member 23b connected in a straight line, and the other end of the second square bar member 23b. This is a member in which one end of the third square bar member 23c is linearly connected.
- the other end of the first square bar member 23 a is fixed to the support member 22.
- the first square bar member 23a, the second square bar member 23b, and the third square bar member 23c are, for example, aluminum square bars.
- the first square bar member 23a, the second square bar member 23b, and the third square bar member 23c are arranged in a direction perpendicular to the longitudinal direction of the linear trunk body 23 and horizontally.
- a through hole is provided.
- the cross-sectional shape of the through hole is a bone.
- the cross-sectional shape of the through hole is symmetric with respect to a line that bisects a vertical line segment of the cross section, and a line that bisects a line segment along the longitudinal direction of the trunk 23 of the cross section.
- the size of the end portion on the free end side is larger than the size of the central portion sandwiched between them.
- the filtrate holding section 24 is a member for holding the filtrate container 5, and is provided on the surface on the base 21 side closer to the free end than the through hole of the first square bar member 23a.
- the replacement fluid holding section 25 is a member for holding the replacement fluid container 4 and is provided on the surface on the base 21 side closer to the free end than the through hole of the second square member 23b.
- the dialysate holding part 26 is a member for holding the dialysate container 3, and is provided on the surface on the base 21 side closer to the free end than the through hole of the third rectangular member 23c.
- the first strain amount detection unit 27 is a Roval type strain amount detection sensor provided on the surface on the base 21 side closer to the support member 22 than the through hole of the first square bar member 23a.
- the first strain amount detection unit 27 includes the weight of the filtrate in the filtrate container 5 held by the filtrate holding unit 24, and the weight of the replacement solution in the replacement fluid container 4 held by the replacement fluid holding unit 25. Then, the amount of distortion of the first square bar member 23a is detected according to the total (first total) of the dialysate in the dialysate container 3 held by the dialysate holder 26.
- the second strain amount detection unit 28 is a Robert-type strain amount detection sensor provided on the surface on the base 21 side closer to the support member 22 than the through hole of the second square bar member 23b.
- the second strain amount detection unit 28 includes the weight of the replacement fluid in the replacement fluid container 4 held by the replacement fluid holding unit 25, and the weight of the dialysate solution in the dialysate container 3 held by the dialysate holding unit 26.
- the amount of distortion of the second square bar member 23b corresponding to the sum of the second (second sum) is detected.
- the third strain amount detection unit 29 is a robust strain detection sensor provided on the surface of the base 21 near the support member 22 from the through hole of the third square bar member 23c, and is used for dialysate. The amount of distortion of the third square bar member 23c according to the weight of the dialysate in the dialysate container 3 held by the holding unit 26 (the third total) is detected.
- the weight calculation unit 30 is based on the detection result obtained by the first strain amount detection unit 27 and the correspondence between the strain amount and the weight, and the weight of the filtrate in the filtrate container 5. This is a component that calculates the sum (first sum) of the weight of the replacement fluid in the replacement fluid container 4 and the weight of the dialysate in the dialysate container 3. Further, the weight calculation unit 30 determines the weight of the replacement fluid in the replacement fluid container 4 and the dialysate container based on the detection result obtained by the second strain amount detection unit 28 and the correspondence between the strain amount and the weight. 3 is a component that calculates the sum (second sum) of the dialysis fluid in 3.
- weight The calculation unit 30 calculates the weight of the dialysate in the dialysate container 3 (the third total) based on the detection result obtained by the third strain amount detection unit 29 and the correspondence between the strain amount and the weight. This is the component that calculates. Further, the weight calculation unit 30 calculates the weight of the filtrate in the filtrate container 5 by subtracting the second total from the first total, and subtracts the third total from the second total. By doing so, it is a component that calculates the weight of the replacement fluid in the replacement fluid container 4.
- the increase / decrease amount calculation unit 31 calculates the amount of increase in the weight of the filtrate in the filtrate container 5 calculated by the weight calculation unit 30 from the initial state, and the replacement fluid container 4 calculated by the weight calculation unit 30. This is a component that calculates the amount of decrease in the weight of the fluid in the dialysate from the initial state and calculates the amount of decrease in the weight of the dialysate in the dialysate container 3 calculated by the weight calculator 30 from the initial state. That is, the increase / decrease amount calculation unit 31 is a component that calculates the weight of the discarded filtrate, the weight of the used replacement fluid, and the weight of the used dialysate.
- the temporal change amount calculation unit 32 calculates the weight of the filtrate in the filtrate container 5 calculated by the weight calculation unit 30, the weight of the replacement fluid in the replacement fluid container 4, and the weight of the dialysate in the dialysate container 3.
- the flow rate of the filtrate stored in the filtrate container 5, the flow rate of the replacement fluid stored in the replacement fluid container 4, and the flow rate of the dialysate stored in the dialysate fluid container 3 are calculated.
- Fig. 5A and Fig. 5B show the changes in the weight of the discarded filtrate, the weight of the replacement fluid used, and the weight of the dialysate over time.
- FIG. 5A is a diagram schematically showing an increase in the weight of the discarded filtrate over time.
- FIG. 5B schematically shows a decrease in the total weight of the used replacement fluid and dialysate over time.
- the time change amount calculation unit 32 is based on the weight of the filtrate in the filtrate container 5 and is a time increase amount of the weight of the filtrate in the filtrate container 5. Calculate the flow rate of the liquid.
- the temporal change amount calculation unit 32 is stored in the replacement fluid container 4 based on the weight of the replacement fluid in the replacement fluid container 4 and is a temporal decrease amount of the weight of the replacement fluid in the replacement fluid container 4.
- the display unit 33 includes a weight calculation unit 30, an increase / decrease amount calculation unit 31, and a temporal change amount calculation unit 32. Therefore, it is a component that displays the obtained calculation result. That is, the display unit 33 displays the weight of the filtrate in the filtrate container 5, the weight of the replacement fluid in the replacement fluid container 4, the weight of the dialysate in the dialysate fluid container 3, the weight of the discarded filtrate, and the replacement fluid used. The weight of the dialysate used, the flow rate of the filtrate stored in the filtrate container 5, the flow rate of the replacement fluid stored in the replacement fluid container 4, and the flow rate of the dialysate stored in the dialysate fluid container 3. indicate.
- FIG. 6 is a diagram illustrating an example of a screen that displays the calculation results displayed by the display unit 33.
- FIG. 7 is a flowchart showing each procedure of the operation of the blood purification system of the first embodiment.
- the doctor when performing treatment using CHDF to purify the blood of patient A, stores a predetermined amount of replacement fluid in the replacement fluid container 4 and places the replacement fluid container 4 in that state on the upper portion of the container.
- the replacement fluid holding part 25 is used to hold the replacement fluid using the provided iron.
- the doctor stores a predetermined amount of dialysate in the dialysate container 3 and holds the dialysate container 3 in that state in the dialysate holder 26 using the top provided in the upper part of the container. Let Furthermore, the doctor holds the filtrate container 5 in an empty state in the filtrate holder 24 using the top provided on the upper part of the container.
- the doctor connects the arterial blood circuit 11 and the venous blood circuit 13 to the patient A, and adjusts the blood pump 6 and the effluent so that the dialysate, the replacement fluid, and the filtrate flow at a predetermined flow rate. Turn on each switch of pump 7, replacement fluid pump 8, and filtrate pump 9.
- the operation of the replacement fluid pump 8 and the filtrate pump 9 starts (Sl). That is, blood pump 6 moves blood taken from patient A to blood purifier 10 via arterial blood circuit 11, and dialysate pump 7 is accommodated in dialysate container 3 and dialyzes the dialysate. It is moved to the blood purifier 10 through the liquid supply path 12.
- the blood purifier 10 filters the blood taken out from the patient A using a filtration membrane and dialysis using the dialysis membrane and the dialysate from the dialysate container 3.
- the blood purified by the blood purifier 10 returns to the patient A through the venous blood circuit 13.
- the replacement fluid pump 8 moves the replacement fluid stored in the replacement fluid container 4 to the venous blood circuit 13, whereby the replacement fluid is mixed into the blood purified by the blood purifier 10 and purified by the blood purifier 10. Blood and fluid replacement return to patient A.
- the filtrate pump 9 moves the filtrate obtained as a result of filtration and dialysis treatment in the blood purifier 10 to the filtrate container 5 via the filtrate disposal path 14.
- the first strain amount detection unit 27 detects the strain amount of the first square bar member 23a
- the second strain amount detection unit 28 detects the strain of the second square bar member 23b.
- the amount is detected
- the third strain amount detection unit 29 detects the strain amount of the third square bar member 23c (S2).
- the amount of distortion of the first square bar member 23a depends on the weight of the filtrate in the filtrate container 5 held by the filtrate holding part 24 and the replacement liquid in the replacement liquid container 4 held by the replacement liquid holding part 25.
- the weight of the dialysate in the dialysate container 3 held by the dialysate holder 26 (first sum) is the amount of distortion of the first square bar member 23a.
- the amount of distortion of the second square bar member 23b is determined by the weight of the replacement fluid in the replacement fluid container 4 held by the replacement fluid holding unit 25 and the dialysate solution in the dialysate container 3 held by the dialysate holding unit 26. This is the amount of distortion of the second square bar member 23b according to the total with the weight (second total).
- the amount of distortion of the third square bar member 23c depends on the weight of the dialysate in the dialysate container 3 held by the dialysate holder 26 (the third total). The amount of distortion.
- the weight calculation unit 30 is based on the detection result obtained by the first strain amount detection unit 27 and the correspondence between the strain amount and the weight, and the weight of the filtrate in the filtrate container 5. The sum (first total) of the weight of the replacement fluid in the replacement fluid container 4 and the weight of the dialysate in the dialysate container 3 is calculated. The weight calculation unit 30 also calculates the weight of the replacement fluid in the replacement fluid container 4 and the dialysate container based on the detection result obtained by the second strain amount detection unit 28 and the correspondence between the strain amount and the weight. Calculate the total (second total) with the weight of dialysate in 3.
- the weight calculation unit 30 determines the weight of the dialysate in the dialysate container 3 (the third strain amount) based on the detection result obtained by the third strain amount detection unit 29 and the correspondence between the strain amount and the weight. (Total) is calculated (S3). Further, the weight calculation unit 30 calculates the weight of the filtrate in the filtrate container 5 by subtracting the second total from the first total, and subtracts the third total from the second total. Thus, the weight of the replacement fluid in the replacement fluid container 4 is calculated (S3).
- the balance control device 2 maintains the flow rate of the dialysate used, the flow rate of the replacement fluid used, and the flow rate of the discarded filtrate within a predetermined flow rate range, and the first sum is
- the operation of the dialysate pump 7, the replacement fluid pump 8, and the filtrate pump 9 is controlled so as not to change (S4).
- the acquisition unit 41 receives the weight of the filtrate in the filtrate container 5 and the weight of the replacement fluid in the replacement fluid container 4 from the weight calculation unit 30 of the weight detection device 1.
- Dialysate Obtain the sum of dialysate weight in container 3 (first sum).
- the control unit 42 keeps the dialysate used, the flow rate of the replacement fluid used, and the flow rate of the discarded filtrate within a predetermined flow rate range, and does not change the first sum. Controls the operation of pump 7, replacement fluid pump 8, and filtrate pump 9. This balances the flow rate of the dialysate and replacement fluid used and the flow rate of the discarded filtrate.
- the increase / decrease amount calculation unit 31 calculates the increase in the weight of the filtrate in the filtrate container 5 from the initial state based on the calculation result obtained by the weight calculation unit 30 and the amount in the replacement fluid container 4. Calculate the decrease in the weight of the replacement fluid from the initial state and the decrease in the weight of the dialysate in the dialysate container 3 from the initial state. That is, the increase / decrease amount calculation unit 31 calculates the weight of the discarded filtrate, the weight of the replacement fluid used, and the weight of the dialysate used.
- the temporal change amount calculation unit 32 calculates the temporal change in the weights of the dialysate container 3, the replacement fluid container 4, and the filtrate container 5, that is, The flow rate of the filtrate stored in the filtrate container 5, the flow rate of the replacement fluid stored in the replacement fluid container 4, and the flow rate of the dialysate stored in the dialysate container 3 are calculated (S5). Specifically, the temporal change amount calculation unit 32 calculates the flow rate of the filtrate by dividing the temporal change amount of the weight of the filtrate obtained by the weight calculation unit 30 by the specific gravity of the filtrate. .
- the temporal change amount calculation unit 32 calculates the flow rate of the replacement fluid by dividing the temporal change amount of the weight of the replacement fluid obtained by the weight calculation unit 30 by the specific gravity of the replacement fluid. Further, the temporal change amount calculation unit 32 calculates the flow rate of the dialysate by dividing the temporal change amount of the dialysate weight obtained by the weight calculation unit 30 by the specific gravity of the dialysate.
- the display unit 33 displays the calculation results obtained by the weight calculation unit 30, the increase / decrease amount calculation unit 31, and the temporal change amount calculation unit 32 (S6). That is, the display unit 33
- the weight of the filtrate in the filtrate container 5, the weight of the replacement fluid in the replacement fluid container 4, the weight of the dialysate in the dialysate container 3, the weight of the discarded filtrate, the weight of the replacement fluid used, and the dialysis used Displays the weight of the liquid, the flow rate of the filtrate stored in the filtrate container 5, the flow rate of the replacement fluid stored in the replacement fluid container 4, and the flow rate of the dialysate stored in the dialysate container 3.
- the balance control device 2 determines whether a predetermined amount of blood has been purified (S7). When it is determined that the predetermined amount of blood has not yet been purified (No in S7), the first strain amount detection unit 27, the second strain amount detection unit 28, and the third strain amount detection The unit 29 returns to the step (S2) of detecting the strain amount of the predetermined part. On the other hand, when it is determined that a predetermined amount of blood has been purified (Yes in S7), the operation of the blood purification system of Embodiment 1 ends.
- the weight of the filtrate in the filtrate container 5 controls the operation of the dialysate pump 7, the replacement fluid pump 8, and the filtrate pump 9 so that the sum with the weight (the first sum) does not change. This balances the flow rate of the dialysate and replacement fluid used and the flow rate of the discarded filtrate.
- the display unit 33 displays the calculation results obtained by the weight calculation unit 30, the increase / decrease amount calculation unit 31, and the temporal change amount calculation unit 32.
- the blood purification system according to Embodiment 1 includes the weight of discarded filtrate, the weight of replacement fluid used, the weight of dialysate used, the flow rate of discarded filtrate, the flow rate of replacement fluid used, And the dialysate flow rate used. This allows the physician to determine the weight of discarded filtrate, the weight of replacement fluid used, the weight of dialysate used, the flow rate of discarded filtrate, the flow rate of replacement fluid used, and the flow rate of dialysate used. Can be known.
- the balance control device 2 uses the calculation result obtained by the weight detection device 1 so that the flow rate of blood taken out from the patient, the blood fluid returned to the patient, and the patient It is possible to balance the flow rate of the replacement fluid injected into the liquid.
- the weight detector 1 determines the weight of the discarded filtrate, the weight of the replacement fluid used, the weight of the dialysate used, the flow rate of the discarded filtrate, the flow rate of the replacement fluid used, and the dialysis used. liquid Is accurately obtained, and the obtained value is displayed.
- the filtrate holding unit 24, the replacement fluid holding unit 25, and the filtrate holding unit 26 are n holding means of the weight detection device of the present invention. It is an example.
- the first strain amount detection unit 27, the second strain amount detection unit 28, and the third strain amount detection unit 29 are examples of n strain amount detection means of the weight detection device of the present invention.
- the trunk body 23 is not necessarily composed of the first square bar member 23a, the second square bar member 23b, and the third square bar member 23c. That is, the trunk is not necessarily composed of a plurality of square bar members.
- the trunk may consist of a single square bar member.
- the trunk body is composed of S1 square bar members, the trunk body includes a holding portion closest to the support member 22 and the support member 22, and between each adjacent two holding portions. A through hole is provided in a direction perpendicular to the straight trunk and horizontally.
- each rod-shaped member is not limited to being a square bar member, and may be a round bar member or the like. Also when the trunk body 23 is constituted by a single rod-shaped member, the rod-shaped member is not limited to being a square bar member, and may be a round bar member or the like.
- the shape of the cross-section of the through hole provided in the trunk body 23 is not limited to a bone shape, and as shown in FIG. 8, as shown in the through hole 230a, the through hole 233b, and the through hole 230c. Alternatively, it may be oval. That is, the cross-sectional shape of the through-hole is symmetric with respect to a line that bisects a line perpendicular to the longitudinal direction of the trunk of the cross-section, and the line segment along the longitudinal direction of the cross-section is 2 It is preferable that the line is symmetric with respect to the equally dividing line.
- the trunk body 23 when the trunk body 23 is composed of a plurality of rod-shaped members, the trunk body 23 has a plurality of rod-like shapes so as to have a "go" shape when viewed from above, for example, as shown in FIG.
- the members may be configured to be connected in a broken line shape, and the trunk body 23 may be an integral broken line member, or the trunk body 23 may be viewed from above. It may be configured in a circular arc shape or a curved shape so as to have a “U” shape.
- the trunk 23 may be composed of a member such as titanium.
- the material constituting the trunk 23 may be any material as long as the amount of strain can be accurately detected. There may be.
- the first distortion amount detection unit 27, the second distortion amount detection unit 28, and the third distortion amount detection unit 29 are not limited to being Roval type distortion amount detection sensors.
- the first strain amount detection unit 27, the second strain amount detection unit 28, and the third strain amount detection unit 29 only need to detect the strain amount that changes the strain amount of the rod body according to the weight.
- the trunk body 23 may not have a through hole. That is, the trunk body 23 may be composed of one or a plurality of rod-shaped members that are not provided with a through-hole as long as it has means capable of detecting the strain amount with high accuracy.
- the blood purification system has been described by taking as an example the case of performing treatment using CHDF to purify the blood of patient A.
- CHF is used to purify blood.
- CHF injects blood taken from a patient into a blood purifier provided with a filtration membrane, filters the blood using the filtration membrane, and returns the purified blood to the patient.
- waste and solvent in the blood obtained by filtration are discarded, and a replacement fluid is replenished to the patient's blood continuously and slowly. Therefore, dialysate is not used in CHF, unlike the case of treatment using CHDF as described above.
- the flow rate of the replacement fluid used must be balanced with the flow rate of the discarded filtrate.
- FIG. 10 is a diagram showing a part of the weight detection device 1 according to the second embodiment. Since there are many common parts between the weight detection device 1 of the second embodiment and the weight detection device 1 of the first embodiment, FIG. 10 is intended to clarify the difference from the weight detection device 1 of the first embodiment. In addition, a part of all components of the weight detection device 1 of the second embodiment is displayed. That is, FIG. 10 shows the base 21, the support member 22, and the trunk of the weight detection device 1 of the second embodiment. The body 23, the filtrate holding unit 24, the replacement fluid holding unit 25, the first strain amount detection unit 27, and the second strain amount detection unit 28 are displayed. FIG. 10 also shows the replacement container 4 and the filtrate container 5.
- the first strain amount detection unit 27 uses the weight of the filtrate in the filtrate container 5 held by the filtrate holding unit 24 and the replacement liquid holding unit 25.
- the amount of distortion of the first square bar member 23a is detected according to the total (fourth total) with the weight of the replacement fluid in the retained replacement fluid container 4.
- the second strain amount detection unit 28 detects the strain amount of the second rectangular bar member 23b according to the weight of the replacement fluid in the replacement fluid container 4 held by the replacement fluid holding unit 25 (fifth total).
- the weight calculation unit 30 is based on the detection result obtained by the first strain amount detection unit 27 and the correspondence between the strain amount and the weight, and the weight of the filtrate in the filtrate container 5. Calculate the total with the weight of the replacement fluid in the replacement fluid container 4. Further, the weight calculation unit 30 calculates the weight of the replacement fluid in the replacement fluid container 4 based on the detection result obtained by the second strain amount detection unit 28 and the correspondence relationship between the strain amount and the weight. Furthermore, the weight calculation unit 30 calculates the weight of the filtrate in the filtrate container 5 by subtracting the fifth total from the fourth total.
- the reduction amount of the replacement fluid stored in the replacement fluid container 4 per unit time and the filtrate container 5 It is equal to the amount of filtrate that is contained. That is, the fourth sum does not change.
- the balance control device 2 keeps the flow rate of the replacement fluid to be used and the flow rate of the discarded filtrate within the predetermined flow rate range for each liquid, and the fourth sum does not change.
- the operation of the replacement fluid pump 8 and the filtrate pump 9 is controlled.
- the acquisition unit 41 receives the sum of the weight of the filtrate in the filtrate container 5 and the weight of the replacement fluid in the replacement fluid container 4 from the weight calculation unit 30 of the weight detection device 1. Get (4th total).
- the control unit 42 maintains the replacement fluid pump 8 and the filtrate pump so that the flow rate of the replacement fluid used and the flow rate of the discarded filtrate are maintained within a predetermined flow rate range and the fourth sum does not change. Control the operation of 9. This balances the flow rate of the replacement fluid used and the flow rate of the discarded filtrate.
- the increase / decrease amount calculation unit 31 calculates the weight of the filtrate in the filtrate container 5 calculated by the weight calculation unit 30. The amount of increase from the initial state is calculated, and the amount of decrease in the weight of the replacement fluid in the replacement fluid container 4 calculated by the weight calculation unit 30 is calculated. That is, the increase / decrease amount calculation unit 31 calculates the weight of the discarded filtrate and the weight of the used replacement fluid.
- the temporal variation calculation unit 32 is accommodated in the filtrate container 5 based on the weight of the filtrate in the filtrate container 5 calculated by the weight calculation unit 30 and the weight of the replacement fluid in the replacement fluid container 4. Calculate the flow rate of the filtrate and the flow rate of the replacement fluid stored in the replacement fluid container 4.
- the temporal change amount calculation unit 32 is stored in the filtrate container 5 which is a temporal increase in the weight of the filtrate in the filtrate container 5 based on the weight of the filtrate in the filtrate container 5. Calculate the flow rate of the filtrate. Similarly, the temporal change amount calculation unit 32 calculates the amount of the replacement fluid stored in the replacement fluid container 4 that is a temporal decrease in the weight of the replacement fluid in the replacement fluid container 4 based on the weight of the replacement fluid in the replacement fluid container 4. Calculate the flow rate.
- the display unit 33 displays the calculation results obtained by the weight calculation unit 30, the increase / decrease amount calculation unit 31, and the temporal change amount calculation unit 32. That is, the display unit 33 is accommodated in the filtrate container 5, the weight of the filtrate in the filtrate container 5, the weight of the replacement fluid in the replacement fluid container 4, the weight of the discarded filtrate, the weight of the replacement fluid used. The flow rate of the filtrate and the flow rate of the replacement fluid stored in the replacement fluid container 4 are displayed. This allows the physician to know the weight of the discarded filtrate, the weight of the replacement fluid used, the flow rate of the discarded filtrate, and the flow rate of the replacement fluid used.
- the balance control device 2 controls the operations of the replacement fluid pump 8 and the filtrate pump 9 so that the fourth sum does not change. This balances the flow rate of the replacement fluid used and the flow rate of the discarded filtrate.
- the blood purification system of the second embodiment displays the calculation results obtained by the weight calculation unit 30, the increase / decrease amount calculation unit 31, and the temporal change amount calculation unit 32 on the display unit 33. . That is, the blood purification system of Embodiment 2 displays the weight of the discarded filtrate, the weight of the used replacement fluid, the flow rate of the discarded filtrate, and the flow rate of the used replacement fluid. This allows the physician to know the weight of the discarded filtrate, the weight of the replacement fluid used, the flow rate of the discarded filtrate, and the flow rate of the replacement fluid used.
- the weight detection apparatus and the present invention according to the present invention are described by taking as an example a blood purification system that performs treatment using CHDF and CHF to purify the blood of patient A. And a balance control device.
- the weight detection device and the balance control device of the present invention are not limited to be provided in a blood purification system that performs treatment using CHDF and CHF to purify the blood of the patient A.
- the weight detection device of the present invention is used to balance the weights of a plurality of objects and acquire the weights of the plurality of objects.
- the filtrate holding unit 24, the replacement fluid holding unit 25, and the dialysate holding unit 26 are used as the n holding means of the weight detection device of the present invention.
- n is not limited to “3” or “2”.
- the number of strain amount detection means of the weight detection device of the present invention is not limited.
- the balance control device of the present invention balances the weights of a plurality of objects using the result obtained by the weight detection device of the present invention.
- the weight detection device of the present invention uses, for example, a continuous slow blood filtration method (CHF) or a continuous blood filtration dialysis method (CH DF) to purify blood of a patient with renal insufficiency.
- CHF continuous slow blood filtration method
- CH DF continuous blood filtration dialysis method
- the balance control device of the present invention is based on the calculation result obtained by the weight detection device of the present invention, the flow rate of blood taken out from the patient, the blood fluid returned to the patient, and the replacement fluid injected into the patient. It is useful as a device for balancing the flow rate.
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Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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CN2007800130499A CN101421594B (zh) | 2006-04-14 | 2007-04-12 | 重量检测装置以及平衡控制装置 |
US12/296,535 US7977586B2 (en) | 2006-04-14 | 2007-04-12 | Weight sensor and balance controller for a blood purification system |
EP07741511.5A EP2019296B1 (en) | 2006-04-14 | 2007-04-12 | Weight sensor and balance controller |
HK09108669.4A HK1128955A1 (en) | 2006-04-14 | 2009-09-23 | Weight sensor and balance controller |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2006112621A JP4908044B2 (ja) | 2006-04-14 | 2006-04-14 | 重量検出装置及びバランス制御装置 |
JP2006-112621 | 2006-04-14 |
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WO2007119786A1 true WO2007119786A1 (ja) | 2007-10-25 |
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US (1) | US7977586B2 (ja) |
EP (1) | EP2019296B1 (ja) |
JP (1) | JP4908044B2 (ja) |
CN (1) | CN101421594B (ja) |
HK (1) | HK1128955A1 (ja) |
WO (1) | WO2007119786A1 (ja) |
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JP4203737B2 (ja) * | 2003-07-28 | 2009-01-07 | 株式会社島津製作所 | ロードセル式重量測定装置 |
JP4908044B2 (ja) * | 2006-04-14 | 2012-04-04 | 株式会社ジェイ・エム・エス | 重量検出装置及びバランス制御装置 |
-
2006
- 2006-04-14 JP JP2006112621A patent/JP4908044B2/ja not_active Expired - Fee Related
-
2007
- 2007-04-12 WO PCT/JP2007/058075 patent/WO2007119786A1/ja active Application Filing
- 2007-04-12 CN CN2007800130499A patent/CN101421594B/zh active Active
- 2007-04-12 EP EP07741511.5A patent/EP2019296B1/en not_active Not-in-force
- 2007-04-12 US US12/296,535 patent/US7977586B2/en not_active Expired - Fee Related
-
2009
- 2009-09-23 HK HK09108669.4A patent/HK1128955A1/xx not_active IP Right Cessation
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GB2182156A (en) * | 1985-10-25 | 1987-05-07 | Defiant Weighing Limited | Load sensing structure |
JPH09239024A (ja) | 1996-03-01 | 1997-09-16 | Asahi Medical Co Ltd | 血液浄化装置 |
DE19857381A1 (de) * | 1998-12-12 | 2000-07-06 | Sartorius Gmbh | Wägeaufnehmer mit zwei Parallelführungen |
JP2003214938A (ja) * | 2002-01-29 | 2003-07-30 | Shimadzu Corp | 歪ゲージ式荷重センサ |
JP2006105734A (ja) * | 2004-10-04 | 2006-04-20 | Jms Co Ltd | トルク検出装置 |
JP6090067B2 (ja) * | 2013-08-28 | 2017-03-08 | コニカミノルタ株式会社 | 静電荷像現像用トナー |
Also Published As
Publication number | Publication date |
---|---|
EP2019296A1 (en) | 2009-01-28 |
HK1128955A1 (en) | 2009-11-13 |
EP2019296B1 (en) | 2017-01-18 |
US7977586B2 (en) | 2011-07-12 |
CN101421594A (zh) | 2009-04-29 |
JP4908044B2 (ja) | 2012-04-04 |
EP2019296A4 (en) | 2012-01-11 |
JP2007285830A (ja) | 2007-11-01 |
CN101421594B (zh) | 2010-12-08 |
US20090276099A1 (en) | 2009-11-05 |
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