CN217593468U

CN217593468U - Liquid level detection and feedback adjustment balancing device for hemodialysis

Info

Publication number: CN217593468U
Application number: CN202220353809.2U
Authority: CN
Inventors: 尹良红; 云琛; 侯赫尔; 云大信
Original assignee: Guangzhou Enttex Medical Products Industry Co ltd
Current assignee: Guangzhou Enttex Medical Products Industry Co ltd
Priority date: 2022-02-21
Filing date: 2022-02-21
Publication date: 2022-10-18
Anticipated expiration: 2032-02-21

Abstract

The utility model discloses a liquid level detection and feedback control balancing unit for hemodialysis, including hemodialysis ware, first weighing apparatus, second weighing apparatus and double-deck diaphragm, the middle part of hemodialysis ware one end liquid outlet and first weighing apparatus is connected with first fluid-discharge tube, and the bottom of first weighing apparatus is connected with the dialysate and connects, and the other end liquid outlet and the second weighing apparatus middle part of hemodialysis ware are connected with the second fluid-discharge tube. Pass through flange symmetry concatenation with first equalizer and second equalizer, and be connected with first diaphragm and second diaphragm in concatenation department, and the middle part of first diaphragm and second diaphragm is equipped with the water storage chamber and is connected with the end cap in the bottom, through the mode of water injection change first equalizer and the inside volume of second equalizer in the double-layered chamber to first diaphragm and second diaphragm, control is simple, manufacturing cost is lower, easily realizes, the flow of the outer dislysate of accessible unit time hemodialysis ware membrane and waste liquid.

Description

Liquid level detection and feedback adjustment balancing device for hemodialysis

Technical Field

The utility model relates to the technical field of medical equipment, specifically a liquid level detection and feedback control balancing unit for hemodialysis.

Background

At present, dialysis equipment in blood purification generally adopts a flowmeter, a pressure control mode or a compound pump mode to control the balance of dialysate and waste liquid, but the prior device adopts the flowmeter to control the balance of the dialysate and the waste liquid, has high requirement on the precision of the flowmeter, is complex to manufacture, and needs to continuously perform self-calibration midway, so the use is very inconvenient, and great inconvenience is caused to doctors.

The traditional CN201110007221.8 liquid level detection and feedback regulation balancing device for hemodialysis adopts a balancer as a capacity balancing device, is simple to control and low in manufacturing cost, monitors whether a membrane in the balancer is pushed in place or not by using a liquid level detection mode, is simple in manufacturing process and control, easy to realize, and can accurately control the flow of dialysate and waste liquid which enter and exit the membrane of the hemodialysis unit in unit time; however, because the volume of the container is fixedly arranged, and the diaphragm in the container is only triggered when clinging to the inner wall of the chamber on the other side, the liquid level detector cannot detect the flow of the liquid and transmit signals, the volume in the chamber cannot be adjusted, different dialysis liquid level volumes cannot be changed, and the use is inconvenient.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hemodialysis is with liquid level detection and feedback control balancing unit to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a liquid level detection and feedback adjustment balancing unit for hemodialysis, includes hemodialysis ware, first balancer, second balancer and double-deck diaphragm, the middle part of hemodialysis ware one end liquid outlet and first balancer is connected with first fluid-discharge tube, and the bottom of first balancer is connected with the dislysate and connects, the other end liquid outlet and the second balancer middle part of hemodialysis ware are connected with the second fluid-discharge tube, just the bottom of second balancer is connected with the waste liquid and connects, be connected with the solenoid valve on waste liquid connects and the dislysate connects, just the middle part of first fluid-discharge tube and second fluid-discharge tube all is connected with hydraulic pump and solenoid valve.

Optionally, the diaphragm comprises a first diaphragm and a second diaphragm, a third connecting flange is fixedly connected to the middle portions of the first diaphragm and the second diaphragm, a cavity is formed in the middle portions of the first diaphragm and the second diaphragm, and a plug is connected to the bottom of the cavity.

Optionally, the first balancer includes a cylindrical first chamber, and a first connecting flange is connected to an upper side of a cylinder body of the first chamber.

Optionally, the second balancer includes a cylindrical second chamber, and a second connecting flange is connected to an upper side of a cylinder body of the second chamber.

Optionally, bolts penetrate through the first connecting flange, the second connecting flange and the third connecting flange, and the diaphragm is fixed to the middle portions of the first balancer and the second balancer through the bolts.

Optionally, a circular connector is arranged at the bottom end of the plug and the bottom end of the third connecting flange, and the connector and the plug are in threaded sealing connection.

Compared with the prior art, the beneficial effects of the utility model are that:

1. this liquid level detection and feedback control balancing unit for hemodialysis, through splicing first equalizer and second equalizer symmetry, and be connected with the diaphragm in concatenation department, the diaphragm includes first diaphragm and second diaphragm, and connect the middle part at first equalizer and second equalizer through third flange, and the middle part of first diaphragm and second diaphragm is equipped with the water storage chamber and is connected with the end cap in the bottom, the mode through water injection changes the inside volume of first equalizer and second equalizer in the double-layered chamber to first diaphragm and second diaphragm, and control is simple, the manufacturing cost is lower, easily realize, can the flow of the outer dislysate of accurate control unit interval business turn over hemodialyzer membrane and waste liquid.

2. This liquid level detection balancing unit for hemodialysis, there is the third flange through the mid-mounting at the diaphragm, first flange and second flange are installed to the junction of first equalizer and second equalizer, be convenient for carry out fixed mounting with third flange through the bolt, first flange and second flange, be convenient for install and dismantle the diaphragm, guarantee the change of diaphragm, and be convenient for carry out the cleaning and disinfection of device, be convenient for the used repeatedly of device, save patient's economic burden.

Drawings

FIG. 1 is a schematic view of the overall structure of a liquid level detection and feedback adjustment balancing device for hemodialysis of the present invention;

FIG. 2 is an exploded view of the liquid level detecting and feedback adjusting and balancing device for hemodialysis of the present invention;

FIG. 3 is a cross-sectional view of the liquid level detecting and feedback adjusting balance device for hemodialysis of the present invention;

FIG. 4 is a schematic diagram of a diaphragm of the liquid level detecting and feedback adjusting balancing device for hemodialysis of the present invention;

FIG. 5 is a schematic view of the balance device for detecting and feedback-adjusting the liquid level for hemodialysis at location A;

fig. 6 is a schematic diagram of the B position of the liquid level detecting and feedback adjusting balancing device for hemodialysis of the present invention.

In the figure: 1. a hemodialyzer; 2. a first drain pipe; 3. a second drain pipe; 4. a waste liquid joint; 5. a dialysate connector; 6. a first balancer; 61. a first chamber; 62. a first connecting flange; 7. a second balancer; 71. a second chamber; 72. a second connecting flange; 8. a hydraulic pump; 9. an electromagnetic valve; 10. a diaphragm; 101. a first diaphragm; 102. a second diaphragm; 103. a third connecting flange; 104. a plug; 11. and (4) bolts.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1 to 6, the utility model provides a liquid level detection and feedback control balancing unit for hemodialysis, including hemodialyzer 1, first equalizer 6, second equalizer 7 and double-deck diaphragm 10, the middle part of hemodialyzer 1 one end liquid outlet and first equalizer 6 is connected with first drain pipe 2, and the bottom of first equalizer 6 is connected with dialysate and connects 5, the other end liquid outlet of

hemodialyzer

1 and 7 middle parts of second equalizer are connected with second fluid-discharge tube 3, and the bottom of second equalizer 7 is connected with waste liquid joint 4, be connected with solenoid valve 9 on waste liquid joint 4 and the dialysate connects 5, and the middle part of first drain pipe 2 and second drain pipe 3 all is connected with hydraulic pump 8 and solenoid valve 9.

The diaphragm 10 comprises a first diaphragm 101 and a second diaphragm 102, a third connecting flange 103 is fixedly connected to the middle portions of the first diaphragm 101 and the second diaphragm 102, a cavity is formed in the middle portions of the first diaphragm 101 and the second diaphragm 102, a plug 104 is connected to the bottom of the cavity, the double-layer arrangement of the first diaphragm 101 and the second diaphragm 102 does not affect the influence of liquid levels inside the first balancer 6 and the second balancer 7, liquid filling is carried out inside the first diaphragm 101 and the second diaphragm 102, the flow rate of the liquid inside the first balancer 6 and the second balancer 7 in the process of entering and exiting is changed, the diaphragm is convenient to be used by patients with different dialysis capacity requirements, the weight of single dialysis capacity and waste liquid discharge capacity can be calculated according to detection of water injection quantity inside the first diaphragm 101 and the second diaphragm 102, and the device is convenient to use.

The first balancer 6 comprises a first chamber 61 in a cylindrical shape, a first connecting flange 62 is connected to the upper side of the barrel body of the first chamber 61, the first chamber 61 connects the hemodialyzer 1 and the dialysate storage bag, and the diaphragm 10 is mounted and dismounted to facilitate the use of the device.

The second balancer 7 comprises a cylindrical second chamber 71, a second connecting flange 72 is connected to the upper side of the body of the second chamber 71, the second chamber 71 and the first chamber 61 are of a symmetrical structure and are connected with the first chamber 61 in an assembling mode, convenience in installation and disassembly of the device is improved through connection between the second connecting flange 72 and the first connecting flange 62, and cleaning and disinfection of the interiors of the first balancer 6 and the second balancer 7 are facilitated.

First flange 62, the inside through connection of second flange 72 and third flange 103 has bolt 11 to fix diaphragm 10 at the middle part of first equalizer 6 and second equalizer 7 through bolt 11, bolt 11 installs diaphragm 10 at the middle part of first equalizer 6 and second equalizer 7, and be convenient for install and dismantle diaphragm 10, avoid diaphragm 10 to appear damaging, carry out timely change to diaphragm 10, and wash the disinfection to the inner wall of first equalizer 6 and second equalizer 7, be convenient for the used repeatedly of device.

The bottom ends of the plug 104 and the third connecting flange 103 are provided with circular connectors, the connectors are in threaded sealing connection with the plug 104, the plug 104 in threaded connection is installed at the bottom ends of the first diaphragm 101 and the second diaphragm 102, water is injected into the clamping cavity of the first diaphragm 101 and the second diaphragm 102, and therefore it is convenient to ensure that the second diaphragm 102 and the first diaphragm 101 adjust the capacity of the first balancer 6 and the second balancer 7.

The working principle is as follows: when the device is used, the diaphragm 10 is filled into the first balancer 6 and the second balancer 7, the first balancer 6, the second balancer 7 and the diaphragm 10 are fixedly and hermetically connected through the bolt 11, then the liquid inlet end of the first balancer 6 is connected with the liquid outlet at one end of the hemodialyzer 1, the liquid outlet end of the first balancer 6 is provided with the dialysate connector 5 and is connected with the waste liquid dialysis bag through the dialysate connector 5, the liquid inlet end of the second balancer 7 is connected with the liquid outlet at the other end of the hemodialyzer 1, the liquid outlet end of the second balancer 7 is provided with the waste liquid connector 4 and is connected with the dialysate dialysis bag through the waste liquid connector 4, at the moment, two hydraulic pumps 8 and four electromagnetic valves 9 connected with the first liquid discharge pipe 2 and the second liquid discharge pipe 3, the waste liquid connector 4 and the dialysate connector 5 are alternately opened and closed in groups, the solenoid valve 9 on the side of the first drain pipe 2 and the dialysate joint 5 is opened, the solenoid valve 9 on the first drain pipe 2 and the second drain pipe 3 is closed, the solenoid valve 9 on the side of the waste liquid joint 4 and the dialysate joint 5 is opened, at this time, the liquid in the dialysate joint 5 flows through the hydraulic pump 8, the liquid is supplemented to the inside of the first balancer 6, and the diaphragm 10 inside the first balancer 6 is pushed to move to the side of the second balancer 7, in this process, the liquid inside the second balancer 7 is pushed out to the waste liquid joint 4, when the diaphragm 10 contacts with the inner side of the second balancer 7, the liquid in the second balancer 7 is completely pushed out, the single-side liquid is finished, then the solenoid valve 9 on the side of the first drain pipe 2 and the dialysate joint 5 is opened, the solenoid valve 9 on the first drain pipe 2 and the second drain pipe 3 is closed, the solenoid valve 9 on the first drain pipe 2 and the second drain pipe 3 is opened, the electromagnetic valves 9 on the waste liquid joint 4 and the dialysate joint 5 are closed, the waste liquid in the hemodialyzer 1 is twitched and discharged to the inside of the second balancer 7 through the hydraulic pump 8 on the second drain pipe 3, and in the process, the liquid inside the second balancer 7 is filled with liquid and extrudes the liquid inside the first balancer 6 to be discharged upwards, and the liquid is discharged to the inside of the hemodialyzer 1 through the first drain pipe 2, so that the liquid replacement is completed, and the balance detection of the dialysate is completed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a liquid level detection and feedback regulation balancing unit for hemodialysis, includes hemodialysis ware (1), first balancer (6), second balancer (7) and double-deck diaphragm (10), its characterized in that, the middle part of hemodialysis ware (1) one end liquid outlet and first balancer (6) is connected with first drain pipe (2), just the bottom of first balancer (6) is connected with dialysate and connects (5), the other end liquid outlet and the second balancer (7) middle part of hemodialysis ware (1) are connected with second fluid-discharge tube (3), just the bottom of second balancer (7) is connected with waste liquid and connects (4), be connected with solenoid valve (9) on waste liquid connects (4) and dialysate and connects (5), just the middle part of first drain pipe (2) and second drain pipe (3) all is connected with hydraulic pump (8) and solenoid valve (9).

2. The fluid level detection and feedback regulation balancing device for hemodialysis of claim 1, wherein the membrane (10) comprises a first membrane (101) and a second membrane (102), a third connecting flange (103) is fixedly connected to the middle of the first membrane (101) and the second membrane (102), a cavity is formed in the middle of the first membrane (101) and the second membrane (102), and a plug (104) is connected to the bottom of the cavity.

3. The apparatus for detecting and feedback-adjusting the fluid level for hemodialysis as set forth in claim 2, wherein the first balancer (6) comprises a first chamber (61) having a cylindrical shape, and a first connecting flange (62) is connected to an upper side of a cylinder of the first chamber (61).

4. A fluid level sensing and feedback control balancing device for hemodialysis as claimed in claim 3, wherein the second balancer (7) comprises a cylindrical second chamber (71), and a second connecting flange (72) is connected to an upper side of a cylinder of the second chamber (71).

5. A fluid level sensing and feedback control balancing device for hemodialysis as claimed in claim 3, wherein the first connecting flange (62), the second connecting flange (72) and the third connecting flange (103) have bolts (11) passing through them, and the diaphragm (10) is fixed to the middle of the first balancer (6) and the second balancer (7) by the bolts (11).

6. The device for detecting the liquid level and adjusting the balance in the feedback manner for hemodialysis according to claim 2, wherein a circular connecting port is formed at the bottom end of the plug (104) and the bottom end of the third connecting flange (103), and the connecting port is hermetically connected with the plug (104) through threads.