CN106693097B - A kind of blood purification flow equilibrium device and method - Google Patents
A kind of blood purification flow equilibrium device and method Download PDFInfo
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- CN106693097B CN106693097B CN201710096760.0A CN201710096760A CN106693097B CN 106693097 B CN106693097 B CN 106693097B CN 201710096760 A CN201710096760 A CN 201710096760A CN 106693097 B CN106693097 B CN 106693097B
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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
- A61M1/14—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
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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
- A61M1/14—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
- A61M1/1611—Weight of the patient
-
- 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
-
- 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
- A61M1/1635—Constructional aspects thereof with volume chamber balancing devices between used and fresh 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3331—Pressure; Flow
- A61M2205/3334—Measuring or controlling the flow 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3379—Masses, volumes, levels of fluids in reservoirs, flow rates
- A61M2205/3396—Reservoirs being alternately filled and emptied for measuring flow rate or delivered volume
-
- 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
- A61M2210/00—Anatomical parts of the body
- A61M2210/12—Blood circulatory system
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- Urology & Nephrology (AREA)
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Abstract
A kind of blood purification flow equilibrium device, it includes the shell equipped with the first accommodating cavity and the second accommodating cavity spherical in shape or elliposoidal, two accommodating cavities are built-in with metering bag respectively, metering bag in first accommodating cavity includes by diaphragm separation and equal the first utricule and the second utricule of volume, metering bag in second accommodating cavity includes by diaphragm separation and the equal third utricule and the 4th utricule of volume, liquid entrance is respectively equipped on each utricule, catheter is separately connected on liquid entrance on first utricule and third utricule to lead to and meet at waste liquid inflow pipe and waste liquid effuser, it is separately connected catheter on liquid entrance on second utricule and the 4th utricule leads to and meet at fresh liquid stream and enters pipe and fresh liquid stream outlet pipe, the catheter has pipeline switch；Described two set and intracavitary are respectively equipped with pressure detector.Cross-infection is not only avoided that using the present invention, but also the flow equilibrium of dialyzate or displacement liquid or blood can be controlled.
Description
Technical field
The present invention relates to technical field of medical equipment, and in particular to a kind of blood purification flow equilibrium device and method.
Background technique
Blood purification technology includes haemodialysis, filtration, absorption and plasma exchange etc., the most general with haemodialysis application
Time.Patient renal function failure causes metabolic waste that cannot excrete, and the purpose of haemodialysis is mainly to remove patient's
Metabolic waste, especially extra moisture.Excessive moisture is excluded by haemodialysis and is also referred to as ultrafiltration, and the amount of ultrafiltration needs accurate
Measurement, to reach optimal dry weight after dialysis, the realization of ultrafiltration mainly has three big typical technologies on traditional technology: balance
Chamber technology, dual pump technology and flowmeter technology, be all by accurately control flow into and out dialyzer dialysate flow it
Difference realizes target ultrafiltration volume, wherein with the accurate ultrafiltration structure that big flow balance and ultrafiltrate pump combine be it is more, more typical, than
As counter balance pocket technology, dual pump technology use be exactly above structure.Therefore it is real for establishing the platform of dialyzate big flow balance
The premise of existing ultrafiltration.
Dialysis is flowed into and out by accurate flow meter modules control with the haemodialysis control unit that treasure (hundred is special) is representative
The dialysate flow of device is detailed in document " Li Chaowei, Li Xiaodong, treasure hemo system ultra filtration unit working principle and breakdown maintenance, doctor
Treat hygienic equipment, the 2nd phase in 2005 " and " Bao Juncheng etc., treasure AK96 haemodialysis control unit liquid channel system structure and function point
Analysis, health care equipment, the 6th phase in 2013 ".It is more traditional and it is common that the control of two-way flow come in two sub-sections it is real
It is existing, i.e. the structure that combines of balance system and ultrafiltrate pump, such as using the Nice Fei Sen as the haemodialysis control unit of representative using " counter balance pocket+
Ultrafiltrate pump " Lai Shixian, detailed schematic are Publication No. CN1872357A, and publication date is that the China on December 6th, 2006 is special
Sharp " blood purification capacitance balance and ultrafiltration apparatus " is disclosed, uses the knot of two cavitys, eight solenoid valves of totally four interior rooms
Structure, fresh liquid and waste liquid interval thin film mutually push, so that the flow of fresh liquid and waste liquid remains balance.Separately
Have using day machine dress haemodialysis control unit as " dual pump+ultrafiltrate pump " structure of representative, compound pumping action is similar to counter balance pocket, and rises
To the effect of flow equilibrium, principle such as " Xue Feng, DBB-26 water channel of hemodialysis machine figure principle analysis, medical equipment information,
3rd phase in 2004 " or " Dong Bin, day machine fill DBB-27C dialysis machine water route part basic principle, Chinese blood purification, 2015
6th phase " is disclosed, and fresh liquid and one, waste liquid interval Ceramic piston, left and right mutually push, again such that fresh liquid and waste liquid
Flow remain balance.Publication No. CN102900664A, publication date are the Chinese patent " one on January 30th, 2013
Kind ballast pump " and Publication No. CN102895710A, publication date are that the Chinese patent on January 30th, 2013 is " a kind of continuous
Flow equilibrium device " also discloses the balancing technique and method being applied in this kind of control devices.
Some common features of above-mentioned various methods or techniques are: 1, it is installed on complicated hemodialysis apparatus internal watercourses
In structure；2, need the mechanically and electrically component of bulky complex；3, liquid is directly contacted with device, is only applicable to flow through dialyzate
And blood of human body cannot be flowed through；4, the non-disposable use of pipeline sterilizes cleaning after needing each use.
Summary of the invention
The object of the present invention is to provide a kind of simple and reasonable blood purification flow equilibrium device and method, can
Cross-infection is avoided, and the flow equilibrium of dialyzate or displacement liquid or blood can be controlled.
To achieve the above object, a kind of blood purification flow equilibrium device provided by the present invention comprising shell, institute
Shell is stated equipped with the first accommodating cavity spherical in shape or elliposoidal and the second accommodating cavity, first accommodating cavity and second accommodates
Chamber is built-in with metering bag respectively, and the metering bag in first accommodating cavity includes by diaphragm separation and equal the first capsule of volume
Body and the second utricule, the metering bag in second accommodating cavity include by diaphragm separation and the equal third utricule of volume and the
Four utricules, are respectively equipped with liquid entrance on each utricule, on the liquid entrance on first utricule and third utricule respectively
Connection catheter, which leads to and meets at waste liquid, flows into pipe and waste liquid effuser, the liquid on second utricule and the 4th utricule into
It is separately connected catheter in outlet leads to and meet at fresh liquid stream and enter pipe and fresh liquid stream outlet pipe, the catheter is opened with pipeline
It closes；Pressure detector is respectively equipped in first accommodating cavity and the second accommodating cavity.
Preferably, the metering bag under full state is spherical in shape or elliposoidal, the metering bag middle part are provided with
Diaphragm, the diaphragm under the first utricule or the second utricule or third utricule or the 4th utricule full state in half ellipsoidal surface or
Hemisphere face shape, the volume of each utricule are respectively equal to the volume of the metering bag；It first accommodating cavity, the second accommodating cavity and is full of
Shape, the size of metering bag under state match.
Preferably, the shell includes pedestal and upper cover, and the pedestal is equipped with semielliptical shape or hemispheric kerve,
The upper lid is equipped with semielliptical shape or hemispheric inverted draw cut；It is common by closure upper cover and pedestal, the inverted draw cut and kerve
Spherical or elliposoidal the first accommodating cavity or the second accommodating cavity are formed, first accommodating cavity and the second accommodating cavity are set to same
On shell or different shell.
Preferably, it is articulated and connected between the upper cover and pedestal for side, the other side opposite with hinged side is by setting
Set lock control opening and closing.
Preferably, the pedestal is equipped with the pipeline slot for accommodating catheter, is provided as pipeline on the pipeline slot
The tubing clamp of switch.
Preferably, the waste liquid flows into pipe and fresh liquid stream enters that peristaltic pump is arranged on pipe.
Preferably, the blood purification flow equilibrium device further includes controller, the pipeline switch, peristaltic pump and pressure
Force detector is connect with controller signals respectively.
The present invention also provides a kind of flow equilibrium method using above-mentioned blood purification flow equilibrium device, packets
It includes:
Step 1: implementing liquid padding to first utricule, the 4th utricule, while to second utricule, the
Three utricules implement liquid discharging operation, and second utricule, the intracorporal liquid of third capsule are discharged under the pressure of diaphragm；
Step 2: being cut after the pressure detector detects that the pressure in the first accommodating cavity and the second accommodating cavity rises sharply
Pipeline switch is changed, liquid padding is implemented to the second utricule, third utricule, while liquid is implemented to the first utricule, the 4th utricule
Body discharging operation, first utricule, the 4th intracorporal liquid of capsule are discharged under the pressure of diaphragm, when pressure detector is examined again
It measures after the pressure in the first accommodating cavity and the second accommodating cavity rises sharply, switches pipeline switch, return step one.
Preferably, the pipeline switch includes feed liquor switch and liquid switchs out, in the step 1 or step 2, leads to
It crosses and opens the corresponding feed liquor switch of each utricule, close the corresponding liquid switch out of each utricule, open waste liquid inflow pipe and enter with fresh liquid stream
The peristaltic pump of pipe realizes the liquid padding to each utricule.
Preferably, in the step 1 or step 2, by opening the corresponding liquid switch out of each utricule, each capsule is closed
The corresponding feed liquor switch of body, realizes the liquid discharging operation to each utricule.
A kind of blood purification flow equilibrium device and method provided by above-mentioned technical proposal, can be to blood purification process
In relevant liquid, especially displacement liquid or blood samples of patients carry out flow control, since liquid is flowed in disposable
In metering bag and its pipeline, in addition to metering bag and its pipeline, the other component of flow equilibrium device does not occur with fluid to be measured straight
Contact, avoids mutually infecting, therefore both can be applied to dialyzate, applies also for displacement liquid and blood；The flow equilibrium
Device designs two metering bags, utricule, the control utricule liquid of four same volumes flow out the eight pipeline switchs realization flowed into
Flow equilibrium control, two equal utricules of each metering bag setting volume, realizes liquid by the mutual extrusion of two utricules
Emptying, and the process that two utricules fill fluid to be measured is monitored by setting pressure detector, when pressure detector detects accommodating
When intracavitary pressure rises sharply, show that the filling of a utricule is completed, and the intracorporal fluid to be measured discharge of another capsule is completed, and is controlled with this
The balance of liquid outflow influx between two utricules is realized in the switching of pipeline switch；Pass through the design of two metering bags, Ji Nengshi
Existing flow equilibrium control, and can guarantee the continuity of fresh liquid output；The flow equilibrium apparatus structure is simple, easy for installation, and
And device does not need to clean, and can be directly mounted at the surface of other equipment, facilitates operation.
Detailed description of the invention
Fig. 1 is the partial structural diagram of blood purification of the invention with flow equilibrium device；
Fig. 2 is that a kind of liquid of flow equilibrium method of the invention flows to schematic diagram；
Fig. 3 is that another liquid of flow equilibrium method of the invention flows to schematic diagram.
Wherein, 1- shell, 101- pedestal, 102- upper cover, 103- kerve, 104- inverted draw cut, 105- pipeline slot, 2- first are accommodated
Chamber, 3- metering bag, the first utricule of 301-, the second utricule of 302-, 303- third utricule, the 4th utricule of 304-, the disengaging of 305- liquid
Mouthful, 306- pressure conduction area, 4- catheter, 501- waste liquid, which flows into, manages, and 502- waste liquid effuser, the fresh liquid stream of 601- enters pipe, 602-
Fresh liquid stream outlet pipe, 7- pipeline switch, the first tubing clamp of 701-, the second tubing clamp of 702-, 703- third tubing clamp, 704- the 4th are managed
The 5th tubing clamp of Lu Jia, 705-, the 6th tubing clamp of 706-, the 7th tubing clamp of 707-, the 8th tubing clamp of 708-, 8- pressure detection
Device, 9- peristaltic pump.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
A kind of blood purification flow equilibrium device provided by the present invention comprising shell 1, the shell, which is equipped with, is in
Spherical or elliposoidal the first accommodating cavity and the second accommodating cavity.First accommodating cavity and the second accommodating cavity are set to same housing
Or on different shell.In the present embodiment, first accommodating cavity and the second accommodating cavity are divided into two identical casings.It please join
Attached drawing 1 is read, is the partial structural diagram of blood purification flow equilibrium device, discloses the shell equipped with the first accommodating cavity 2
Structure.First accommodating cavity and the second accommodating cavity are built-in with metering bag 3 respectively, and the metering bag in first accommodating cavity includes
By diaphragm separation and equal the first utricule 301 and the second utricule 302 of volume, the metering bag in second accommodating cavity includes
By diaphragm separation and the equal third utricule 303 and the 4th utricule 304 of volume, liquid entrance is respectively equipped on each utricule
305, catheter 4, which is separately connected, on the liquid entrance on first utricule 301 and third utricule 303 leads to and meet at useless
Liquid stream enters pipe 501 and waste liquid effuser 502, divides on the liquid entrance 305 on second utricule 302 and the 4th utricule 304
Not Lian Jie catheter 4 lead to and meet at fresh liquid stream and enter pipe 601 and fresh liquid stream outlet pipe 602, the catheter 4 has pipeline switch
7；Pressure detector 8 is respectively equipped in first accommodating cavity and the second accommodating cavity.
Flow equilibrium device of the invention is in use, since liquid is flowed in disposable metering bag and its pipeline
In, in addition to metering bag and its pipeline, the other component of flow equilibrium device does not contact directly with fluid to be measured generation, avoids mutually
Infection, therefore both can be applied to dialyzate, apply also for displacement liquid and blood；The flow equilibrium device passes through same accommodating
The mutual extrusion of two intracavitary utricules realizes the emptying of liquid, and monitors two utricules by setting pressure detector and fill test solution
The process of body shows that the filling of a utricule is completed when pressure detector detects that the pressure in accommodating cavity rises sharply, and another capsule
Intracorporal fluid to be measured discharge is completed, and with the switching that this control piper switchs, realizes liquid outflow influx between two utricules
Balance；By the design of two metering bags, it had not only been able to achieve flow equilibrium control, but also can guarantee the continuity of fresh liquid output；It is described
Flow equilibrium apparatus structure is simple, easy for installation, and device does not need to clean, and can be directly mounted at the surface of other equipment,
Facilitate operation.
In the present embodiment, the metering bag 3 under full state is spherical in shape or elliposoidal, in the middle part of the metering bag
It is provided with diaphragm, the diaphragm is full of shape in the first utricule 301 or the second utricule 302 or third utricule 303 or the 4th utricule 304
It is in half ellipsoidal surface or hemisphere face shape under state, the volume of each utricule is respectively equal to the volume of the metering bag, with the appearance of metering bag
Product is the volume of the flow equilibrium device；The shape of metering bag under first accommodating cavity, the second accommodating cavity and full state
Shape, size match.For filling liquid to the first utricule 301, to the first utricule filling liquid until the first balloon inflation
To maximum volume, when the first balloon inflation to maximum volume, the pressure detector 8 in the first accommodating cavity 2 detects the first appearance
It sets in chamber 2, the pressure of especially metering bag 3 rises sharply.While filling liquid to the first utricule 301, the second utricule 302 is implemented
Discharge liquor gymnastics is made, and liquid is smoothly discharged under the compressing of diaphragm for second utricule 302, when first utricule 301 is swollen
It is swollen to maximum volume when, the liquid in the second utricule 302 is emptied completely.Similarly, when second utricule 302 is expanded to largest body
When product, the liquid in the first utricule 301 is emptied completely.
In another embodiment of the invention, with the volume of first accommodating cavity or the second accommodating cavity for the flow
The volume of balancing device, the first utricule 301, the second utricule 302, third utricule 303, the 4th utricule 304 volume be greater than or
Equal to the first accommodating cavity or the volume of the second accommodating cavity.For filling liquid to the first utricule 301, filled to the first utricule
When liquid, limitation is formed to the amount of liquid that the first utricule can fill by the inner wall of the first accommodating cavity, is filled out when in the first utricule
When the amount of liquid filled reaches the volume of the first accommodating cavity, the pressure detector 4 in the first accommodating cavity is detected in the first accommodating cavity
Pressure rise sharply.While filling liquid to the first utricule, the second utricule is implemented discharge liquor gymnastics and is made, and second utricule exists
Liquid is smoothly discharged under the compressing of the inner wall of diaphragm and the first accommodating cavity.
Preferably, the pressure conduction area 306 convenient for pressure monitoring is provided on the metering bag 3, the pressure conduction area 306
Film thickness it is thicker relative to other regions, in favor of pressure transmitting.
The waste liquid flows into pipe 501 and fresh liquid stream enters setting peristaltic pump 9 on pipe 601, dynamic with the driving for providing liquid flowing
Power.
Please refer to attached drawing 1, the shell 1 includes pedestal 101 and upper cover 102, the pedestal 101 be equipped with semielliptical shape or
The hemispheric kerve 103 of person, the upper lid are equipped with semielliptical shape or hemispheric inverted draw cut 104；By being closed 102 He of upper cover
Spherical or elliposoidal the first accommodating cavity or the second accommodating cavity is collectively formed in pedestal 101, the inverted draw cut 104 and kerve 103.?
In the present embodiment, it is articulated and connected between the upper cover 102 and pedestal 101 for side, the other side opposite with hinged side passes through
Setting lock control opening and closing.Since flow equilibrium device of the invention can be used as a part of blood cleaning equipment, this stream
Amount balancing device can be embedded in or be otherwise coupled in the outside of blood cleaning equipment.In the other embodiment of the present invention
In, the lid conjunction mode of the upper cover 102 of the shell 1 can link with the other component of blood cleaning equipment.In actual use process
In, it can first be installed on the kerve of pedestal 103 after fixing metering bag 3, close lid 102 in lid.
The pedestal 101 is equipped with the pipeline slot 105 for accommodating catheter 4, is provided as pipe on the pipeline slot 105
The tubing clamp of way switch 7.The tubing clamp includes feed liquor switch and liquid switchs out, specifically, including the first utricule is arranged in
The first tubing clamp 701 that liquid entrance and waste liquid flow between pipe 501, the liquid entrance and waste liquid that the first utricule is set
The liquid entrance of the second utricule is arranged in and fresh liquid stream enters between pipe 601 in the second tubing clamp 702 between effuser 502
The 4th tubing clamp 704 between third tubing clamp 703, the liquid entrance that the second utricule is arranged in and fresh liquid stream outlet pipe 602 is set
The liquid set the 5th tubing clamp 705 between liquid entrance and waste liquid the inflow pipe 501 of third utricule, third utricule is set
Body inlet and outlet waste liquid effuser 502 between the 6th tubing clamp 706, be arranged in the 4th utricule liquid entrance and fresh liquid stream
For entering the 7th tubing clamp 707 between pipe 601, being arranged between the liquid entrance of the 4th utricule and fresh liquid stream outlet pipe 602
Eight tubing clamps 708.The flow equilibrium device designs two metering bags, the utricule of four same volumes, control utricule liquid flow
Eight tubing clamps flowed into out realize flow equilibrium control, utilize the flowing of eight tubing clamp control liquid.The tubing clamp can
Using vein clamping structure well known to blood cleaning equipment industry, the tubing clamp is equipped with electromagnetic drive mechanism and corresponding control
Circuit processed.
First accommodating cavity of this blood purification flow equilibrium device and the structure of the second accommodating cavity its fit system are as follows: from
The pipeline that the first utricule extends out in first accommodating cavity and the pipeline that third utricule extends out out of second accommodating cavity are mutual
Connection, for flowing through the waste liquid generated after dialysis；The pipeline that the second utricule extends out out of first accommodating cavity holds with from second
It sets the pipeline that intracavitary 4th utricule extends out to be interconnected, for flowing through fresh liquid, in the present invention, the fresh liquid may include
Analyse liquid, displacement liquid, new blood.
The blood purification flow equilibrium device further includes controller, and the pipeline switch 7, peristaltic pump 9 and pressure are visited
Device 8 is surveyed to connect with controller signals respectively.The control circuit of this flow equilibrium device, for example, pipeline switch 7 control circuit and
The control circuit of pressure detector 8, the unified setting of control circuit with blood cleaning equipment.It balances and controls for fluid flow
When, this flow equilibrium device cooperates together with blood cleaning equipment.
Attached drawing 2 and 3 is please referred to, the present invention also provides a kind of using the above-mentioned blood purification flow of flow equilibrium device
Balance method comprising:
Step 1: implementing liquid padding to first utricule, the 4th utricule, while to second utricule, the
Three utricules implement liquid discharging operation, and second utricule, the intracorporal liquid of third capsule are discharged under the pressure of diaphragm；
Step 2: being cut after the pressure detector detects that the pressure in the first accommodating cavity and the second accommodating cavity rises sharply
Pipeline switch is changed, liquid padding is implemented to the second utricule, third utricule, while liquid is implemented to the first utricule, the 4th utricule
Body discharging operation, first utricule, the 4th intracorporal liquid of capsule are discharged under the pressure of diaphragm, when pressure detector is examined again
It measures after the pressure in the first accommodating cavity and the second accommodating cavity rises sharply, switches pipeline switch, return step one.
The pipeline switch includes feed liquor switch and liquid switchs out, in the step 1 or step 2, passes through unlatching
The corresponding feed liquor switch of each utricule, close each utricule it is corresponding go out liquid switch, open that waste liquid flows into pipe and fresh liquid stream enters the compacted of pipe
Dynamic pump, realizes the liquid padding to each utricule.
In the step 1 or step 2, by opening the corresponding liquid switch out of each utricule, it is corresponding to close each utricule
Feed liquor switch, realize to the liquid discharging operation of each utricule.
When for flow equilibrium, a flow equilibrium period can be divided into first half stage and rear half stage.Attached drawing 2 discloses
The liquid in first half stage flows to: fresh liquid is driven by peristaltic pump reaches third tubing clamp 703 and the 7th tubing clamp 707, waste liquid by
Peristaltic pump driving reaches at the first tubing clamp 701 and the 5th tubing clamp 705, the open and-shut mode of first half stage each tubing clamp are as follows: the
One tubing clamp 701, the 4th tubing clamp 704, the 6th tubing clamp 706, the 7th tubing clamp 707 are opened, the second tubing clamp 702, third
Tubing clamp 703, the 5th tubing clamp 705, the 8th tubing clamp 708 are closed.Therefore fresh liquid can flow into second from the 7th tubing clamp 707
The 4th utricule 304 in accommodating cavity pushes waste liquid from the third utricule 303 in the second accommodating cavity through the 6th pipe across one layer of diaphragm
706 outflow of road folder；Waste liquid can flow into the first utricule 301 in the first accommodating cavity from the first tubing clamp 701 simultaneously, across one layer
Diaphragm pushes fresh liquid to flow out from the second utricule 302 in the first accommodating cavity through the 4th tubing clamp 704.
After the pressure detector in the first accommodating cavity and the second accommodating cavity detects that pressure increases, switch pipeline clip-like
State, into the rear first half stage, attached drawing 3 disclose rear half stage liquid flow direction: the first tubing clamp 701, the 4th tubing clamp 704,
6th tubing clamp 706, the 7th tubing clamp 707 are closed, the second tubing clamp 702, third tubing clamp 703, the 5th tubing clamp 705, the
Eight tubing clamps 708 are opened, therefore fresh liquid can flow into the second utricule 302 in the first accommodating cavity from third tubing clamp 703, across
One layer of diaphragm pushes waste liquid to flow out from the first utricule 301 in the first accommodating cavity through the second tubing clamp 702；Waste liquid can be from simultaneously
5th tubing clamp 705 flows into the third utricule 303 in the second accommodating cavity, pushes fresh liquid out of second accommodating cavity across one layer of diaphragm
The 4th utricule 304 through the 8th tubing clamp 708 flow out.
The discharge of fresh liquid each time is all that waste liquid is pushed across side film as a result, the fresh liquid being therefore discharged and entrance
Waste liquid flow is equal, and similarly, the discharge of waste liquid each time is all that fresh liquid is pushed across side film as a result, being therefore discharged
Waste liquid is equal with the fresh flow quantity of entrance.The result is that flow through the fresh flow quantity of device always with the waste liquid flow phase that flows through device
Deng to realize the flow equilibrium of two-way liquid.
The flow equilibrium method contains liquid using disposable metering bag, so that the liquid that flows through and device
Other component does not occur directly to contact, and can avoid mutually pollution, prevents cross-infection between patient, be both applicable to dialyzate, more
It is applicable to displacement liquid and blood.In practical applications, by band, there are two two thin film metrology bags of utricule as container, benefit
With 8 pipeline switchs, successively action control liquid flows, and switches using pressure detector detection occupied state as pipeline switch
The foundation of movement realizes the flow equilibrium of the waste liquid and fresh liquid that flow through device, principle letter applied by the flow equilibrium device
Single and its flow equilibrium method is realized reliable.
The above is only the preferred embodiment of the present invention, it is noted that those skilled in the art are come
It says, without departing from the technical principles of the invention, several improvement and replacement can also be made, these are improved and replacement is also answered
It is considered as protection scope of the present invention.
Claims (9)
1. a kind of blood purification flow equilibrium device, which is characterized in that it includes shell, the shell be equipped with it is spherical in shape or
The first accommodating cavity and the second accommodating cavity of person's elliposoidal, first accommodating cavity and the second accommodating cavity are built-in with metering bag respectively,
Metering bag in first accommodating cavity includes by diaphragm separation and equal the first utricule and the second utricule of volume described the
Metering bag in two accommodating cavities includes by diaphragm separation and the equal third utricule and the 4th utricule of volume, on each utricule respectively
Equipped with liquid entrance, catheter is separately connected on the liquid entrance on first utricule and third utricule and leads to and converges
Pipe and waste liquid effuser are flowed into waste liquid, is separately connected catheter on the liquid entrance on second utricule and the 4th utricule
Lead to and meet at fresh liquid stream and enter pipe and fresh liquid stream outlet pipe, the catheter has pipeline switch；First accommodating cavity and
Pressure detector is respectively equipped in two accommodating cavities；The shell includes pedestal and upper cover, the pedestal be equipped with semielliptical shape or
The hemispheric kerve of person, the upper lid are equipped with semielliptical shape or hemispheric inverted draw cut；It is described by closure upper cover and pedestal
Spherical or elliposoidal the first accommodating cavity or the second accommodating cavity, first accommodating cavity and second is collectively formed in inverted draw cut and kerve
Accommodating cavity is set on same housing or different shell.
2. blood purification as described in claim 1 flow equilibrium device, which is characterized in that the meter under full state
Measure that bag is spherical in shape or elliposoidal, be provided with diaphragm in the middle part of the metering bag, the diaphragm in the first utricule or the second utricule or
It is in half ellipsoidal surface or hemisphere face shape under third utricule or the 4th utricule full state, the volume of each utricule is respectively equal to the meter
Measure the volume of bag；
First accommodating cavity, the second accommodating cavity and the metering bag under full state shape, size match.
3. blood purification as described in claim 1 flow equilibrium device, which is characterized in that be between the upper cover and pedestal
Side articulated connection, the other side opposite with hinged side pass through setting lock control opening and closing.
4. blood purification as described in claim 1 flow equilibrium device, which is characterized in that the pedestal is equipped with for holding
The pipeline slot of catheter is set, the tubing clamp of pipeline switch is provided as on the pipeline slot.
5. such as blood purification of any of claims 1-4 flow equilibrium device, which is characterized in that the waste liquid
It flows into pipe and fresh liquid stream enters that peristaltic pump is arranged on pipe.
6. blood purification as claimed in claim 5 flow equilibrium device, which is characterized in that it further include controller, the pipe
Way switch, peristaltic pump and pressure detector are connect with controller signals respectively.
7. a kind of flow equilibrium method using blood purification of any of claims 1-6 flow equilibrium device,
It is characterized in that, comprising:
Step 1: implementing liquid padding to first utricule, the 4th utricule, while to second utricule, third capsule
Body implements liquid discharging operation, and second utricule, the intracorporal liquid of third capsule are discharged under the pressure of diaphragm；
Step 2: after the pressure detector detects that the pressure in the first accommodating cavity and the second accommodating cavity rises sharply, switching pipe
Way switch implements liquid padding to the second utricule, third utricule, while implementing liquid row to the first utricule, the 4th utricule
It operates out, first utricule, the 4th intracorporal liquid of capsule are discharged under the pressure of diaphragm, when pressure detector detects again
After pressure in first accommodating cavity and the second accommodating cavity rises sharply, switch pipeline switch, return step one.
8. flow equilibrium method as claimed in claim 7, which is characterized in that the pipeline switch includes feed liquor switch and liquid out
Switch is switched by opening the corresponding feed liquor of each utricule in the step 1 or step 2, it is corresponding out to close each utricule
Liquid switch opens the peristaltic pump that waste liquid flows into pipe and fresh liquid stream enters pipe, realizes the liquid padding to each utricule.
9. flow equilibrium method as claimed in claim 8, which is characterized in that in the step 1 or step 2, pass through
The corresponding liquid switch out of each utricule is opened, the corresponding feed liquor switch of each utricule is closed, realizes the liquid discharging operation to each utricule.
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| CN201710096760.0A CN106693097B (en) | 2017-02-22 | 2017-02-22 | A kind of blood purification flow equilibrium device and method |
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| CN201710096760.0A CN106693097B (en) | 2017-02-22 | 2017-02-22 | A kind of blood purification flow equilibrium device and method |
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| CN106693097A CN106693097A (en) | 2017-05-24 |
| CN106693097B true CN106693097B (en) | 2019-05-03 |
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| JP7305758B2 (en) * | 2018-09-29 | 2023-07-10 | フレセニウス・メディカル・ケア・ドイチュラント・ゲーエムベーハー | Dialysis devices for use with interfacial media, dialysis systems, uses of dialysis devices, methods for establishing a dialysis system, methods for filling and/or priming a dialysis system, and for removing air from a dialysis system Method |
| CN110735962B (en) * | 2019-09-06 | 2021-05-04 | 广东宝莱特医用科技股份有限公司 | Balance cavity electromagnetic valve control method |
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| DE102009058681A1 (en) * | 2009-12-16 | 2011-06-22 | Fresenius Medical Care Deutschland GmbH, 61352 | Balancing device, external medical functional device, treatment device and method |
| CN102908685A (en) * | 2012-07-26 | 2013-02-06 | 重庆山外山科技有限公司 | Balance cavity control system for hemodialysis machine |
| DE102014109369A1 (en) * | 2014-07-04 | 2016-01-07 | B. Braun Avitum Ag | dialysis machine |
| CN106581792B (en) * | 2016-12-21 | 2020-02-07 | 广州大学 | Device for realizing flow balance control by using flow balance type peristaltic pump |
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