CN219941404U - Liquid cartridge for peritoneal dialysis machine and peritoneal dialysis machine - Google Patents
Liquid cartridge for peritoneal dialysis machine and peritoneal dialysis machine Download PDFInfo
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- CN219941404U CN219941404U CN202320399053.XU CN202320399053U CN219941404U CN 219941404 U CN219941404 U CN 219941404U CN 202320399053 U CN202320399053 U CN 202320399053U CN 219941404 U CN219941404 U CN 219941404U
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- 239000007788 liquid Substances 0.000 title claims abstract description 163
- 238000000502 dialysis Methods 0.000 title claims abstract description 55
- 239000002699 waste material Substances 0.000 claims abstract description 27
- 230000001502 supplementing effect Effects 0.000 claims abstract description 24
- 238000004891 communication Methods 0.000 claims abstract description 20
- 239000000758 substrate Substances 0.000 claims abstract description 15
- 239000011159 matrix material Substances 0.000 claims abstract description 9
- 239000012530 fluid Substances 0.000 claims description 42
- 239000012528 membrane Substances 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 7
- 238000005086 pumping Methods 0.000 claims description 4
- 238000001746 injection moulding Methods 0.000 claims description 2
- 210000004712 air sac Anatomy 0.000 claims 1
- 238000002637 fluid replacement therapy Methods 0.000 claims 1
- 230000037452 priming Effects 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 18
- 230000010412 perfusion Effects 0.000 description 14
- 238000001802 infusion Methods 0.000 description 12
- 230000003014 reinforcing effect Effects 0.000 description 6
- 102220570780 SPOC domain-containing protein 1_K29I_mutation Human genes 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009256 replacement therapy Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Abstract
The utility model relates to a liquid cassette for a peritoneal dialysis machine and the peritoneal dialysis machine, wherein the liquid cassette comprises a substrate and a soft diaphragm, a plurality of mutually independent liquid grooves and two mutually independent pump grooves are formed in a first side of the substrate, and a plurality of circulation grooves are formed in a second side of the substrate; a cylindrical valve seat is arranged in each liquid tank; the soft diaphragm can seal a plurality of liquid grooves, pump grooves and circulation grooves when being pressed on the wall surfaces of the first side and the second side of the matrix to form mutually independent filling valve cavities, liquid supplementing valve cavities, human body communication valve cavities, waste liquid valve cavities, left pump first valve cavities, left pump second valve cavities, right pump first valve cavities, right pump second valve cavities, left pump chambers, right pump chambers, left pump flow channels, right pump flow channels, first flow channels and second flow channels respectively. The liquid cassette of the peritoneal dialysis machine can overcome the defects that the existing liquid cassette needs to be provided with more valves and channels and is complex in structure.
Description
Technical Field
The utility model relates to the field of peritoneal dialysis, in particular to a liquid cassette for a peritoneal dialysis machine and the peritoneal dialysis machine.
Background
Automated peritoneal dialysis is an important means for kidney replacement therapy, and is increasingly attracting attention because of the advantages of convenient use, flexible dialysis dosage, strong small molecule solute removal capability, good social regression of patients and the like. The peritoneal dialysis machine is the core device or apparatus that implements automated peritoneal dialysis treatment. The peritoneal dialysis machines are generally classified into pressure control type, gravity control type and mixed control type according to the power sources of the infusion and extraction, and the current clinical common machine type is the pressure control type. The existing pressure control type or mixed control type peritoneal dialysis machine guides the flow path of the liquid in the cartridge by opening and closing the electromagnetic valve on the cartridge liquid path driven by the pressure of the gas, thereby realizing the flow of the perfusion, the fluid supplementing and the drainage or the waste discharge of the dialysate. In which a large number of valves and passages are required to be provided in the liquid cartridge, the structure of which is very complex.
Disclosure of Invention
The utility model provides a liquid cassette for a peritoneal dialysis machine, which can overcome the defects that the existing liquid cassette needs to be provided with more valves and channels and has a complex structure.
The utility model relates to a liquid cassette for a peritoneal dialysis machine, which comprises a substrate and a soft diaphragm covered on the wall surface of a first side and the wall surface of a second side of the substrate, wherein the first side and the second side are opposite, the first side of the substrate is provided with a plurality of mutually independent liquid grooves and two mutually independent pump grooves which are sunken relative to the wall surface of the substrate, and the second side of the substrate is provided with a plurality of circulation grooves which are sunken relative to the wall surface of the substrate;
A cylindrical valve seat is arranged in each liquid tank, one end of the valve seat is communicated with the liquid tank, the other end of the valve seat is communicated with one of the circulating tanks, the bottom wall of the liquid tank is taken as a reference, and the distance between one end of the valve seat, which is far away from the reference, and the reference is smaller than the distance between the wall surface of the first side of the base body and the reference;
the soft diaphragm can seal a plurality of liquid grooves to form mutually independent filling valve cavities, liquid supplementing valve cavities, human body communicating valve cavities, waste liquid valve cavities, left pump first valve cavities, left pump second valve cavities, right pump first valve cavities and right pump second valve cavities when being pressed on the wall surfaces of the first side and the second side of the matrix, seal two pump grooves to form mutually independent left pump cavities and right pump cavities respectively, seal a plurality of circulating grooves to form mutually independent left pump flow channels, right pump flow channels, first flow channels and second flow channels respectively, and the matrix is also provided with a plurality of pipe connecting holes which are communicated with the filling valve cavities, the liquid supplementing valve cavities, the human body communicating valve cavities and the waste liquid valve cavities in a one-to-one correspondence manner;
the valve seat in the pouring valve cavity and the valve seat in the waste liquid valve cavity are communicated with the first flow channel, the valve seat in the fluid supplementing valve cavity and the valve seat in the human body communicating valve cavity are communicated with the second flow channel, the valve seat in the left pump first valve cavity and the valve seat in the left pump second valve cavity are communicated with the left pump flow channel, the valve seat in the right pump first valve cavity and the valve seat in the right pump second valve cavity are communicated with the right pump flow channel, the left pump first valve cavity and the right pump first valve cavity are respectively communicated with the first flow channel, the left pump second valve cavity and the right pump second valve cavity are respectively communicated with the second flow channel, the left pump chamber and the left pump flow channel are communicated, and the right pump chamber and the right pump flow channel are communicated.
Preferably, the cartridge comprises three said fluid-filled valve chambers. The filling valve comprises a filling valve cavity, a human body communication valve cavity, a waste liquid valve cavity and three fluid supplementing valve cavities, wherein four cavities are arranged at the leftmost end of a clamping box along the width direction of the leftmost end of the clamping box, the four cavities are communicated with four connecting pipe holes located at the first side of a base body in a one-to-one correspondence manner, the other two cavities are arranged at the right side of the four cavities along the width of the clamping box, two liquid inlet channels are arranged at the second side of the base body, the two liquid inlet channels are communicated with the other two cavities in a one-to-one correspondence manner, the two liquid inlet channels are communicated with the two connecting pipe holes located at the second side of the base body in a one-to-one correspondence manner, and the connecting pipe holes are all arranged at the leftmost end of the base body. The two cavities are respectively one of a filling valve cavity and three fluid supplementing valve cavities.
Preferably, the left pump chamber and the right pump chamber are elliptical, the depth of the middle parts of the left pump chamber and the right pump chamber is larger than the depth of the edges, the left pump first valve chamber and the left pump second valve chamber are positioned at the left side of the left pump chamber, the left pump flow channel is opposite to the edges of the left pump chamber, which are close to the left pump first valve chamber and the left pump second valve chamber, the right pump first valve chamber and the right pump second valve chamber are positioned between the left pump chamber and the right pump chamber, and the right pump flow channel is opposite to the edges of the right pump chamber, which are close to the right pump first valve chamber and the right pump second valve chamber.
Preferably, the base body is provided with communication holes for communicating the first side and the second side of the base body at positions where the two liquid inlet channels are opposite to the other two cavities, the positions where the first valve cavity of the left pump is opposite to the first flow channel, the positions where the first valve cavity of the right pump is opposite to the first flow channel, the positions where the second valve cavity of the left pump is opposite to the second flow channel, the positions where the second valve cavity of the right pump is opposite to the second flow channel, the positions where the left pump cavity is opposite to the left pump channel, and the positions where the right pump cavity is opposite to the right pump channel are opposite to the second side. The matrix is integrally formed by injection molding.
Preferably, the base has a first vertical wall surface perpendicular to the first side wall surface and a second vertical wall surface opposite to the first vertical wall surface, the first vertical wall surface and the second vertical wall surface each connecting a left end and a right end of the cassette, and a right portion of the first vertical wall surface is closer to the second vertical wall surface than a left portion.
Preferably, the cartridge comprises two soft diaphragms, and each soft diaphragm is bonded to edges of side surfaces of both sides of the substrate in a one-to-one correspondence.
The utility model also provides a peritoneal dialysis machine which comprises a pressure control device and the cassette, wherein the pressure control device comprises a gas cylinder and a pneumatic device connected with the gas cylinder through a gas pipe, and the pneumatic device drives a soft diaphragm of the cassette to press or separate from the matrix under the pressure of gas output by the gas cylinder. The pneumatic device comprises a first pneumatic piece, wherein the first pneumatic piece is provided with a frame structure matched with the wall surface of the first side and the wall surface of the second side of the base body; the pneumatic device further comprises a plurality of second pneumatic pieces which are opposite to the valve seats one by one; the pneumatic device further includes a third pneumatic member opposite the left pump chamber and a fourth pneumatic member opposite the right pump chamber.
Preferably, the gas cylinder comprises a cylinder body and a cover body, wherein the cylinder body is provided with:
the air inlet channel is used for communicating with the positive pressure end of the air pump;
a large positive pressure air cavity;
one end of the air inlet hole of the large positive pressure air cavity air inlet electromagnetic valve is connected with the air inlet channel, and the other end of the air inlet hole is connected with the I port of the large positive pressure air cavity air inlet electromagnetic valve;
one end of the air outlet hole of the large positive pressure air cavity air inlet electromagnetic valve is connected with the II port of the large positive pressure air cavity air inlet electromagnetic valve, and the other end of the air outlet hole is connected with the large positive pressure air cavity;
the large positive pressure air channel is communicated with the large positive pressure air cavity;
one end of the air inlet holes of the liquid path control electromagnetic valves is respectively communicated with the large positive air pressure channel, and the other end of the air inlet holes of the liquid path control electromagnetic valves is connected with the I ports of the liquid path control electromagnetic valves in a one-to-one correspondence manner;
the atmosphere negative pressure channel is connected with the III ports of the liquid path control electromagnetic valves;
one ends of the air outlet holes of the liquid path control electromagnetic valves are respectively communicated with the atmospheric pressure channels, and the other ends of the air outlet holes of the liquid path control electromagnetic valves are connected with the III ports of the liquid path control electromagnetic valves in a one-to-one correspondence manner;
the large negative pressure air cavity is communicated with the large negative pressure channel;
One end of the air return channel is communicated with the negative pressure end of the air pump;
one end of the air inlet hole of the air return electromagnetic valve of the large negative pressure air cavity is communicated with the large negative pressure air cavity, and the other end of the air inlet hole is connected with the II port of the air return electromagnetic valve of the large negative pressure air cavity;
one end of the air outlet hole of the air return electromagnetic valve of the large negative pressure air cavity is connected with the III port of the air return electromagnetic valve of the large negative pressure air cavity, and the other end of the air outlet hole is communicated with the air return channel;
a small positive pressure air cavity;
one end of the air inlet hole of the small positive pressure air cavity air inlet electromagnetic valve is connected with the air inlet channel, and the other end of the air inlet hole is connected with the I port of the small positive pressure air cavity air inlet electromagnetic valve;
one end of the air outlet hole of the small positive pressure air cavity air inlet electromagnetic valve is connected with the II port of the small positive pressure air cavity air inlet electromagnetic valve, and the other end of the air outlet hole is connected with the small positive pressure air cavity;
a left pump chamber channel for communicating with a driver that drives a membrane of a left pump chamber of the liquid pump;
a right pump chamber channel for communicating with a driver that drives a membrane of a right pump chamber of the liquid pump;
one end of the air inlet hole of the first electromagnetic valve is connected with the small positive pressure air cavity, and the other end of the air inlet hole is connected with the first electromagnetic opening of the air outlet of the small positive pressure air cavity;
one end of the air outlet hole of the first air outlet electromagnetic valve of the small positive pressure air cavity is connected with the II port of the air outlet first electromagnetic valve of the small positive pressure air cavity, and the other end of the air outlet hole is communicated with the left pump chamber channel;
One end of the air inlet hole of the second electromagnetic valve is connected with the small positive pressure air cavity, and the other end of the air inlet hole is connected with the I port of the second electromagnetic valve;
one end of the air outlet hole of the second electromagnetic valve is connected with the second electromagnetic port of the air outlet of the small positive pressure air cavity, and the other end of the air outlet hole is communicated with the right pump chamber channel;
a small negative pressure air cavity;
one end of the air inlet hole of the first air inlet electromagnetic valve of the small negative pressure air cavity is communicated with the left pump chamber channel, and the other end of the air inlet hole is connected with the II port of the first air inlet electromagnetic valve of the small negative pressure air cavity;
one end of the air outlet hole of the small negative pressure air cavity air inlet first electromagnetic valve is connected with the III port of the small negative pressure air cavity air inlet first electromagnetic valve, and the other end of the air outlet hole is communicated with the small negative pressure air cavity;
one end of the air inlet hole of the second air inlet electromagnetic valve of the small negative pressure air cavity is communicated with the right pump chamber channel, and the other end of the air inlet hole of the second air inlet electromagnetic valve of the small negative pressure air cavity is connected with the II port of the second air inlet electromagnetic valve of the small negative pressure air cavity;
one end of the air outlet hole of the second electromagnetic valve is connected with the III port of the second electromagnetic valve, and the other end of the air outlet hole is communicated with the small negative pressure air cavity;
one end of the air inlet hole of the small negative pressure air cavity air return electromagnetic valve is communicated with the small negative pressure air cavity, and the other end of the air inlet hole is connected with the II port of the small negative pressure air cavity air return electromagnetic valve;
One end of the air outlet hole of the small negative pressure air cavity air return electromagnetic valve is connected with the III port of the small negative pressure air cavity air return electromagnetic valve, and the other end of the air outlet hole is communicated with the air return channel;
the large positive pressure air cavity, the large negative pressure air cavity, the small positive pressure air cavity and the small negative pressure air cavity are mutually independent, and the cover body forms sealing closure for the large positive pressure air cavity, the large negative pressure air cavity, the small positive pressure air cavity and the small negative pressure air cavity respectively;
the gas cylinder also comprises a large positive pressure air cavity air inlet electromagnetic valve, a plurality of liquid path control electromagnetic valves, a large negative pressure air cavity air return electromagnetic valve, a small positive pressure air cavity air inlet electromagnetic valve, a small positive pressure air cavity air outlet first electromagnetic valve, a small positive pressure air cavity air outlet second electromagnetic valve, a small negative pressure air cavity air inlet first electromagnetic valve, a small negative pressure air cavity air inlet second electromagnetic valve and a small negative pressure air cavity air return electromagnetic valve, and the gas cylinder also comprises a circuit board arranged on the cylinder body, wherein the circuit board is provided with a controller which is respectively connected with each electromagnetic valve and a gas pump so as to control each electromagnetic valve and the gas pump.
Preferably, the gas cylinder is further provided with:
one end of the air inlet hole of the high-pressure cavity air inlet electromagnetic valve is communicated with the air inlet channel, and the other end of the air inlet hole is communicated with the I port of the high-pressure cavity air inlet electromagnetic valve;
One end of the air outlet hole of the high-pressure cavity air inlet electromagnetic valve is communicated with the II port of the high-pressure cavity air inlet electromagnetic valve, and the other end of the air outlet hole is communicated with the high-pressure cavity;
one end of the air inlet hole of the first air outlet electromagnetic valve of the high-pressure cavity is communicated with the high-pressure cavity, and the other end of the air inlet hole is communicated with the I port of the first air outlet electromagnetic valve of the high-pressure cavity;
one end of the air outlet hole of the high-pressure cavity air outlet first electromagnetic valve is communicated with the II port of the high-pressure cavity air outlet first electromagnetic valve, and the other end of the air outlet hole is communicated with the left pump chamber channel;
one end of the air inlet hole of the high-pressure cavity air outlet second electromagnetic valve is communicated with the high-pressure cavity, and the other end of the air inlet hole is communicated with the I port of the high-pressure cavity air outlet second electromagnetic valve;
one end of the air outlet hole of the high-pressure cavity air outlet second electromagnetic valve is communicated with the II port of the high-pressure cavity air outlet second electromagnetic valve, and the other end of the air outlet hole is communicated with the right pump chamber channel;
the gas cylinder further comprises a high-pressure cavity gas inlet electromagnetic valve, a high-pressure cavity gas outlet first electromagnetic valve and a high-pressure cavity gas outlet second electromagnetic valve, and the high-pressure cavity gas inlet electromagnetic valve, the high-pressure cavity gas outlet first electromagnetic valve and the high-pressure cavity gas outlet second electromagnetic valve are respectively connected with the circuit board.
Preferably, the gas cylinder is further provided with air inlets of two air bag electromagnetic valves, one end of each air bag electromagnetic valve is communicated with the air inlet channel, the other end of each air bag electromagnetic valve is communicated with an I port of the air bag electromagnetic valve, the gas cylinder further comprises two air bag electromagnetic valves, and the two air bag electromagnetic valves are respectively connected with the circuit board.
Preferably, the gas cylinder is further provided with:
one end of the air outlet hole of the air inlet electromagnetic valve of the air inlet channel is communicated with the air return channel, and the other end of the air outlet hole is communicated with the III port of the air inlet electromagnetic valve of the air inlet channel;
one end of the air inlet hole of the air inlet channel air outlet electromagnetic valve is communicated with the air inlet channel, and the other end of the air inlet hole is communicated with the I port of the air inlet channel air outlet electromagnetic valve;
the gas cylinder further comprises the air inlet electromagnetic valve of the air inlet channel and the air outlet electromagnetic valve of the air inlet channel, the air inlet electromagnetic valve of the air inlet channel and the air outlet electromagnetic valve of the air inlet channel are respectively connected with the circuit board, the II port of the air inlet electromagnetic valve of the air inlet channel is communicated with the atmosphere, and the II port of the air outlet electromagnetic valve of the air inlet channel is communicated with the atmosphere.
Preferably, the gas cylinder is further provided with:
one end of the air inlet hole of the left pump chamber atmospheric electromagnetic valve is communicated with the left pump chamber channel, and the other end of the air inlet hole is communicated with the II port of the left pump chamber atmospheric electromagnetic valve;
one end of the air inlet hole of the right pump chamber atmospheric electromagnetic valve is communicated with the right pump chamber channel, and the other end of the air inlet hole is communicated with the II port of the right pump chamber atmospheric electromagnetic valve;
the gas cylinder also comprises a left pump chamber atmospheric electromagnetic valve and a right pump chamber atmospheric electromagnetic valve, wherein an I port of the left pump chamber atmospheric electromagnetic valve is communicated with the atmosphere, an I port of the right pump chamber atmospheric electromagnetic valve is communicated with the atmosphere, and the left pump chamber atmospheric electromagnetic valve and the right pump chamber atmospheric electromagnetic valve are respectively connected with the circuit board.
Preferably, the air pressures of the large positive pressure air cavity, the small positive pressure air cavity and the high pressure air cavity are controlled to be 0mbar to +500mbar, and the air pressures of the large negative pressure air cavity and the small negative pressure air cavity are controlled to be-500 mbar to 0mbar. The air pressure of the air bag is controlled between 0mbar and +1000mbar. The air pressure of the left pump chamber channel and the right pump chamber channel is controlled to be-500 mbar to +500mbar.
Compared with the prior art, the utility model has the following beneficial effects:
1. in the cartridge of the utility model, the valve cavity and the flow channels are arranged on different sides of the matrix, the valve cavities are provided with the valve seats, only two valve cavities are respectively arranged corresponding to the left pump and the right pump, one valve cavity and the valve seat are arranged corresponding to each pipe connecting hole, namely corresponding to the input or output port of each liquid, and three flow channels are arranged to realize liquid guidance in the whole flow of filling, fluid supplementing and waste discharging of the dialysate. Under the condition of arranging the same number of connecting pipe holes, namely realizing the same function, the cartridge disclosed by the utility model makes more full use of the space occupied by the base body, has smaller volume, and has fewer arranged valves than the valves used in the prior art, and has simpler structure.
2. The air cylinder of the peritoneal dialysis machine is provided with the large positive pressure air cavity, the large negative pressure air cavity, the small positive pressure air cavity and the small negative pressure air cavity, all channels and air inlets and air outlets for connecting and installing all the electromagnetism are processed on the air cylinder, the electromagnetic valve is directly installed on the air cylinder, an additional confluence plate is not needed, the functions of the existing air cylinder and the existing confluence plate can be realized, the structure is simpler and more compact, the occupied volume is smaller, and an air pipe is not needed to be arranged between the air cylinder and the confluence plate, so that the probability of gas leakage is reduced.
Drawings
Fig. 1 is an exploded view of a fluid cassette for a peritoneal dialysis machine according to one embodiment of the present utility model.
Fig. 2 is a schematic view of the structure of a first side of a liquid cartridge for a peritoneal dialysis machine according to one embodiment of the present utility model.
Fig. 3 is a schematic view showing a structure of a connection between a liquid cartridge and a liquid tube for a peritoneal dialysis machine according to an embodiment of the present utility model.
Fig. 4 is a schematic view of the structure of the second side of the base of the liquid cartridge for the peritoneal dialysis machine according to an embodiment of the present utility model.
Fig. 5 is a schematic structural view of a gas cylinder of a peritoneal dialysis machine according to an embodiment of the present utility model.
Fig. 6 is a schematic view of the structure of a gas cylinder of the peritoneal dialysis machine and each solenoid valve mounted to the gas cylinder according to an embodiment of the present utility model.
FIG. 7 is a schematic diagram showing the structure of each solenoid valve of the gas cylinder of the peritoneal dialysis machine according to an embodiment of the present utility model
Fig. 8 is a schematic perspective view of a cylinder body of a gas cylinder of a peritoneal dialysis machine according to an embodiment of the present utility model, the cylinder body being inverted with respect to fig. 5.
Fig. 9 is a schematic top view of a gas cylinder of a peritoneal dialysis machine according to an embodiment of the present utility model.
Fig. 10 is a schematic cross-sectional view of a gas cylinder of the peritoneal dialysis machine of an embodiment of the utility model, taken along line L-L in fig. 9.
Fig. 11 is a schematic cross-sectional view of a gas cylinder of the peritoneal dialysis machine of an embodiment of the present utility model, taken along line H-H of fig. 9.
Fig. 12 is a schematic cross-sectional view of a gas cylinder of the peritoneal dialysis machine of an embodiment of the utility model, taken along line I-I of fig. 9.
Fig. 13 is a schematic cross-sectional view of a gas cylinder of a peritoneal dialysis machine according to an embodiment of the utility model, taken along the line J-J in fig. 9.
Fig. 14 is a schematic cross-sectional view of a gas cylinder of the peritoneal dialysis machine of an embodiment of the utility model, taken along the line K-K in fig. 9.
Fig. 15 is a schematic view of the gas circuit principle of the gas cylinder of the peritoneal dialysis machine according to an embodiment of the present utility model.
Reference numerals
The bottle comprises a bottle body A, a first pump joint hole A1, a first pump joint A2, a second pump joint hole A3, a second pump joint A4, a reinforcing rib A5, a pagoda joint A6, an air filtering column A7, an A8 mounting boss, an A9 pressure measuring through hole, an A10 atmospheric through hole, an A11 load hole and an A12 boss;
a cover body B;
c, sealing gaskets;
a D circuit board;
11 large positive pressure air cavity, 12 large negative pressure air cavity, 13 small positive pressure air cavity, 14 small negative pressure air cavity,
15 air inlet channel, 16 air return channel, 17 positive air pressure channel, 18 negative air pressure channel, 19 left pump chamber channel, 1a right pump chamber channel;
a 21-size negative pressure air cavity air return electromagnetic valve,
22 an air inlet channel air inlet electromagnetic valve,
23 an air outlet electromagnetic valve of an air inlet channel,
an air inlet electromagnetic valve of a 24-big positive pressure air cavity,
25,26 air bag solenoid valves,
27 high-pressure chamber air inlet electromagnetic valve,
a 28-small negative pressure air cavity air return electromagnetic valve,
an air inlet electromagnetic valve of a 29-small positive pressure air cavity,
210 a first solenoid valve for venting the high pressure chamber,
the 211 small positive pressure air cavity is provided with a first electromagnetic valve,
212 a left pumping chamber atmospheric solenoid valve,
213 small negative pressure air cavity air inlet first electromagnetic valve,
214 small negative pressure air cavity air inlet second electromagnetic valve,
215 a right pumping chamber atmospheric solenoid valve,
a second electromagnetic valve for exhausting air from the 216-small positive-pressure air cavity,
217 the high pressure chamber vents a second solenoid valve,
218-227 liquid paths control solenoid valves,
an air outlet hole of the K21 large negative pressure air cavity air return electromagnetic valve,
an air outlet hole of the K22 air inlet channel air inlet electromagnetic valve,
an air inlet hole of an air outlet electromagnetic valve of the K23 air inlet channel,
an air inlet hole of an air inlet electromagnetic valve of the K24 large positive pressure air cavity,
the air inlet holes of the K25 and K26 air bag electromagnetic valves,
an air inlet hole of an air inlet electromagnetic valve of the K27 high-pressure cavity,
an air outlet hole of the K28 small negative pressure air cavity air return electromagnetic valve,
an air inlet hole of an air inlet electromagnetic valve of the K29I small positive pressure air cavity,
an air outlet hole of the K29 II small positive pressure air cavity air inlet electromagnetic valve,
the K211I small positive pressure air cavity vents the air inlet hole of the first electromagnetic valve,
the K211 II small positive pressure air cavity is provided with an air outlet hole of the first electromagnetic valve,
the K216I small positive pressure air cavity vents the air inlet hole of the second electromagnetic valve,
the K216 II small positive pressure air cavity is provided with an air outlet hole of the second electromagnetic valve,
the K218I-K227I liquid path controls the air inlet hole of the electromagnetic valve,
the outlet hole of the K218 III-K227 III liquid path control electromagnetic valve;
3 cassette
31 base body, 311 liquid tank, 312 pump tank, 313 valve seat, 32 soft diaphragm, 33 liquid pipe, 34 joint, 35 pipe clamp, 36 notch, 37 first side wall, 38 second side wall, 39 first vertical wall, 30 second vertical wall;
3a filling valve cavity, 3b first fluid supplementing valve cavity, 3c second fluid supplementing valve cavity, 3d third fluid supplementing valve cavity, 3e human body communicating valve cavity, 3f waste liquid valve cavity, 3g left pump first valve cavity, 3h left pump second valve cavity, 3i right pump first valve cavity, 3j right pump second valve cavity, 3k left pump cavity, 3l right pump cavity, 3m first flow channel, 3n second flow channel, 3o left pump flow channel, 3p right pump flow channel, 3q first liquid inlet channel, 3r second liquid inlet channel and 3s through hole;
Detailed Description
The present utility model provides a liquid cartridge 3 for a peritoneal dialysis machine, the cartridge 3 being disposable, as shown in fig. 1-3, the cartridge 3 comprising a base 31 and a flexible membrane 32 covering a wall 37 on a first side and a wall 38 on a second side of said base 31, said first side and second side being opposite, in this embodiment the wall on the first side being parallel and opposite the wall on the second side. In this embodiment, the cassette 3 includes two soft diaphragms 32, and each soft diaphragm 32 is bonded to edges of side surfaces of both sides of the base 31 in a one-to-one correspondence. In other embodiments, the same large soft diaphragm 32 may be adhered to the edges of the side surfaces of the base 31.
As shown in fig. 2, the first side of the base 31 is provided with a plurality of mutually independent liquid tanks 311 and two mutually independent pump tanks 312 recessed with respect to the wall surface thereof. As shown in fig. 3, the second side of the substrate 31 is provided with a plurality of flow channels recessed with respect to the wall surface thereof, and the flow channels are used to form a plurality of flow channels, which will be described in detail in the next section. A cylindrical valve seat 313 is disposed in each of the liquid tanks 311, the valve seat 313 has a through hole with one end communicating with the liquid tank 311 and the other end communicating with one of the flow tanks, the axis of the through hole coincides with the axis of the cylinder, and the distance between the end of the valve seat 313 away from the reference and the reference is smaller than the distance between the wall surface of the first side of the base 31 and the reference, that is, the distance between the end of the valve seat 313 away from the reference and the wall surface of the first side in the depth direction of the liquid tank 31 is smaller than the wall surface of the first side, in this embodiment, the other end of the valve seat 313 is flush with the bottom wall of the liquid tank 311, and it is preferable that the valve seat 313 is integrally injection molded with the base 31.
As shown in fig. 2, when the soft diaphragm is pressed against the wall surfaces of the first side and the second side of the substrate 31, the soft diaphragm may seal the plurality of liquid grooves 311 to form a mutually independent filling valve cavity 3a, a liquid supplementing valve cavity, a human body communicating valve cavity 3e, a waste liquid valve cavity 3f, a left pump first valve cavity 3g, a left pump second valve cavity 3h, a right pump first valve cavity 3i, a right pump second valve cavity 3j, seal the two pump grooves 312 to form a mutually independent left pump cavity 3k and right pump cavity 3l, seal the plurality of circulation grooves to form a mutually independent left pump circulation channel 3o, a right pump circulation channel 3p, a first circulation channel 3m and a second circulation channel 3n, and the substrate 31 is further provided with a plurality of pipe connecting holes which are in one-to-one correspondence with the filling valve cavity 3a, the liquid supplementing valve cavity, the human body communicating valve cavity 3e and the waste liquid valve cavity 3 f.
Wherein the valve seat 313 in the pouring valve cavity 3a and the valve seat 313 in the waste liquid valve cavity 3f are both communicated with the first flow channel 3m, the valve seat 313 in the fluid supplementing valve cavity and the valve seat 313 in the human body communication valve cavity 3e are both communicated with the second flow channel 3n, the valve seat 313 in the left pump first valve cavity 3g and the valve seat 313 in the left pump second valve cavity 3h are both communicated with the left pump flow channel 3o, the valve seat 313 in the right pump first valve cavity 3i and the valve seat 313 in the right pump second valve cavity 3j are both communicated with the right pump flow channel 3p, the left pump first valve cavity 3g and the right pump first valve cavity 3i are respectively communicated with the first flow channel 3m, the left pump second valve cavity 3h and the right pump second valve cavity 3j are respectively communicated with the second flow channel 3n, the left pump 3k and the left pump flow channel 3o are communicated, and the right pump chamber 3l and the right pump flow channel 3p are respectively communicated.
The soft diaphragm 32 of the cartridge 3 of the present utility model is deformable by the pneumatic device, and when the soft diaphragm 32 is driven to be respectively abutted against the side surfaces of the two sides of the base 31, the first side of the cartridge 3 forms a plurality of mutually independent valve chambers and pump chambers, and the second side forms a plurality of mutually independent flow channels. When the portion of the flexible diaphragm 32 opposite to the valve seat 313 is abutted against one end of the valve seat 313, in this embodiment, the end of the flexible diaphragm 32 in communication with the valve cavity is abutted against to form a seal, so that the flow between the corresponding valve cavity on the first side of the base 31 and the flow channel on the second side of the base 31 can be blocked. When the flexible diaphragm 32 is driven away from one end of the valve seat 313, fluid may be caused to flow from the valve chamber to the corresponding flow passage. In the cartridge 3 of the present utility model, the valve chambers and the flow channels are provided on different sides of the base 31, and the valve chambers are provided with the valve seats 313, only two valve chambers are respectively provided corresponding to the left pump and the right pump, one valve chamber and the valve seat 313 are provided corresponding to each pipe receiving hole, i.e. corresponding to the input or output port of each liquid, and three flow channels are provided to realize the liquid guidance in all the flow paths of the dialysate infusion, the fluid replenishment and the waste discharge, which flow paths will be described in detail below. Under the condition that the same number of connecting pipe holes are arranged, namely the same functions are realized, the cartridge 3 of the utility model makes more full use of the space occupied by the base body 31, the volume of the cartridge 3 is smaller, the arranged valves are fewer than those used in the prior art, and the structure is simpler. For example, in this embodiment, the cartridge is provided with 6 ports and correspondingly 10 valve seats, so that the fluid path switching of all the peritoneal dialysis procedures can be completed, while the existing structure requires 13 to 14 valves.
Four of the perfusion valve cavity 3a, the human body communication valve cavity 3e, the waste liquid valve cavity 3f and the three fluid supplementing valve cavities are arranged at the leftmost end of the cartridge 3 along the width direction of the leftmost end of the cartridge 3, the four cavities are communicated with four connecting pipe holes positioned at the first side of the base body 31 in a one-to-one correspondence manner, the other two cavities are arranged at the right side of the four cavities along the width of the cartridge 3, a first liquid inlet channel 3q and a second liquid inlet channel 3n are arranged at the second side of the base body 31, the two liquid inlet channels are communicated with the other two cavities in a one-to-one correspondence manner, and the two liquid inlet channels are communicated with two connecting pipe holes positioned at the second side of the base body 31 in a one-to-one correspondence manner, and the connecting pipe holes are all arranged at the leftmost end of the base body 31.
In this embodiment, the cartridge 3 includes three fluid-filling valve chambers, as shown in fig. 2, the left end of the cartridge 3 is sequentially arranged with a waste fluid valve chamber 3f, a first fluid-filling valve chamber 3b, a third fluid-filling valve chamber 3d, and a human body communication valve chamber 3e in the width direction of the cartridge 3. The left pump chamber 3k and the right pump chamber 3l are elliptical, the depth of the middle parts of the left pump chamber 3k and the right pump chamber 3l is larger than the depth of the edges, a left pump first valve chamber 3g, a filling valve chamber 3a, a second fluid supplementing valve chamber 3c and a left pump second valve chamber 3h are arranged around the left side of the left pump, the left pump first valve chamber 3g and the left pump second valve chamber 3h are positioned on the left side of the left pump chamber 3k, the left pump flow channel 3o is parallel and opposite to the edges of the left pump chamber 3k, which are close to the left pump first valve chamber 3g and the left pump second valve chamber 3h, the right pump first valve chamber 3i and the right pump second valve chamber 3j are positioned between the left pump chamber 3k and the right pump chamber 3l, and the right pump flow channel 3p is parallel and opposite to the edges of the right pump first valve chamber 3i and the right pump second valve chamber 3j, which are close to the right pump first valve chamber 3i and the right pump second valve chamber 3 j. The filling valve chamber 3a and the second fluid-replenishing valve chamber 3c are arranged between the left pump first valve chamber 3g and the left pump second valve chamber 3 h.
Preferably, as shown in fig. 2, the base body 31 is provided with communication holes 3s for communicating the first side and the second side of the base body 31 at positions where the two intake passages are opposed to the other two chambers, respectively, the left pump first valve chamber 3g is opposed to the first flow passage 3m, the right pump first valve chamber 3i is opposed to the first flow passage 3m, the left pump second valve chamber 3h is opposed to the second flow passage 3n, the right pump second valve chamber 3j is opposed to the second flow passage 3n, the left pump chamber 3k is opposed to the left pump flow passage 3o, and the right pump chamber 3l is opposed to the right pump flow passage 3p, respectively, so that the communication of the valve chambers or the pump chambers corresponding to the positions with the passages is realized.
As shown in fig. 2 and 3, the base 31 has a first vertical wall 39 perpendicular to the first side wall and a second vertical wall 30 opposite to the first vertical wall, the first vertical wall 39 and the second vertical wall 30 are connected to the left and right ends of the cassette 3, and the right part of the first vertical wall 39 is closer to the second vertical wall 30 than the left part, so that a notch 36 is formed on the upper right side of the cassette 3, and the notch 36 forms a mark to prevent the cassette 3 from being reversed when the cassette 3 is put into the peritoneal dialysis machine. In the present embodiment, the right end of the cassette 3 is curved, which also distinguishes between the left end and the right end of the cassette 3.
In this embodiment, as shown in fig. 4, a joint 34 is provided at each joint hole, each joint 34 is connected to a liquid tube 33, the liquid tube 33 is provided with a tube clamp 35, the perfusion valve chamber 3a is connected to a heating liquid chamber (not shown in the figure) through the joint 34 and the liquid tube 33, the human body communication valve chamber 3e is used for connection to a patient, the waste liquid valve chamber 3f is connected to a waste liquid chamber (not shown in the figure), and a plurality of liquid replenishing bags (not shown in the figure) are communicated with three liquid replenishing valve chambers.
And (3) pouring:
when the valve seat 313 in the perfusion valve chamber 3a, the right pump first valve chamber 3i, the left pump second valve chamber 3h, and the human body communication valve chamber 3e are simultaneously opened, the fourth pneumatic element adsorbs the position of the soft diaphragm 32 opposite to the right pump chamber 3l, so that the volume of the right pump chamber 3l is increased, and the third pneumatic element squeezes the position of the soft diaphragm 32 opposite to the left pump chamber 3k, so that the volume of the left pump chamber 3k is reduced. The heated dialysate flows from the heating fluid bag to the perfusion valve cavity 3a through the first fluid inlet channel 3q, then flows through the first flow channel 3m, the right pump first valve cavity 3i, the right pump flow channel 3p in sequence, and enters the right pump chamber 3l. Meanwhile, the dialysate in the left pump chamber 3k sequentially passes through the left pump flow channel 3o, the left pump second valve cavity 3h, the second flow channel 3n and the human body communication valve cavity 3e, and finally enters the patient.
When the filling valve cavity 3a, the right pump second valve cavity 3j, the left pump first valve cavity 3g and the valve seat 313 in the human body communication valve cavity 3e are simultaneously opened, the volume of the left pump chamber 3k is increased, and the volume of the right pump chamber 3l is reduced. The heated dialysate flows from the heating fluid bag to the perfusion valve chamber 3a through the first fluid inlet channel 3q, and then flows through the first flow channel 3m, the left pump first valve chamber 3g, the left pump flow channel 3o, and the left pump chamber 3k in order. Simultaneously, the dialysate in the right pump chamber 3l sequentially passes through the right pump flow channel 3p, the right pump second valve cavity 3j, the second flow channel 3n and the human body communication valve cavity 3e, and finally enters the patient.
When the dialysate in the heating liquid bag flows out, the dialysate enters a fluid infusion flow path, and when the first fluid infusion bag infuses:
when the valve seats 313 in the first fluid supplementing valve cavity 3b, the filling valve cavity 3a, the second valve cavity 3j of the right pump and the first valve cavity 3g of the left pump are simultaneously opened, the volume of the right pump chamber 3l is increased, and the dialysate in the first fluid supplementing bag sequentially flows through the first fluid supplementing valve cavity 3b, the second flow channel 3n, the second valve cavity 3j of the right pump and the right pump flow channel 3p to enter the right pump chamber 3l. Simultaneously, the volume of the left pump chamber 3k is reduced, and the dialysate in the left pump chamber 3k sequentially flows through the left pump flow channel 3o, the left pump first valve cavity 3g, the first flow channel 3m and the perfusion valve cavity 3a to enter the heating liquid bag for heating.
When the valve seats 313 in the first fluid-supplementing valve cavity 3b, the filling valve cavity 3a, the right pump first valve cavity 3i and the left pump second valve cavity 3h are simultaneously opened, the volume of the left pump chamber 3k is increased, and the dialysate in the first fluid-supplementing valve cavity 3b flows through the first fluid-supplementing valve cavity 3b, the second flow channel 3n, the left pump second valve cavity 3h and the left pump flow channel 3o and enters the left pump chamber 3k. Simultaneously, the volume of the right pump chamber 3l is reduced, and the dialysate in the right pump chamber 3l sequentially flows through the right pump flow channel 3p, the right pump first valve cavity 3i, the first flow channel 3m and the perfusion valve cavity 3a to enter the heating liquid bag for heating.
After the first fluid infusion bag fluid infusion is completed, the perfusion process is continued, and when the dialysate in the heating fluid bag flows out, the second fluid infusion bag fluid infusion is specifically as follows:
when the valve seats 313 in the second fluid-supplementing valve cavity 3c, the filling valve cavity 3a, the right pump second valve cavity 3j and the left pump first valve cavity 3g are simultaneously opened, the volume of the right pump chamber 3l is increased, and the dialysate in the second fluid-supplementing bag sequentially flows through the second liquid inlet channel 3r, the second fluid-supplementing valve cavity 3c, the second flow channel 3n, the right pump second valve cavity 3j and the right pump flow channel 3p to enter the right pump chamber 3l. Simultaneously, the volume of the left pump chamber 3k is reduced, and the dialysate in the left pump chamber 3k sequentially flows through the left pump flow channel 3o, the left pump first valve cavity 3g, the first flow channel 3m and the perfusion valve cavity 3a to enter the heating liquid bag for heating.
When the valve seats 313 in the second fluid-supplementing valve cavity 3c, the filling valve cavity 3a, the right pump first valve cavity 3i and the left pump second valve cavity 3h are simultaneously opened, the volume of the left pump chamber 3k is increased, and the dialysate in the second fluid-supplementing valve cavity 3c flows through the second fluid-supplementing valve cavity 3c, the second flow channel 3n, the left pump second valve cavity 3h and the left pump flow channel 3o and enters the left pump chamber 3k. Simultaneously, the volume of the right pump chamber 3l is reduced, and the dialysate in the right pump chamber 3l sequentially flows through the right pump flow channel 3p, the right pump first valve cavity 3i, the first flow channel 3m and the perfusion valve cavity 3a to enter the heating liquid bag for heating.
After the second fluid infusion bag fluid infusion is completed, the perfusion process is continued, and when the dialysate in the heating fluid bag flows out, the third fluid infusion bag fluid infusion is carried out, specifically:
when the valve seats 313 in the third fluid-supplementing valve cavity 3d, the filling valve cavity 3a, the right pump second valve cavity 3j and the left pump first valve cavity 3g are simultaneously opened, the volume of the right pump chamber 3l is increased, and the dialysate in the third fluid-supplementing bag sequentially flows through the third fluid-supplementing valve cavity 3d, the second flow channel 3n, the right pump second valve cavity 3j and the right pump flow channel 3p to enter the right pump chamber 3l. Simultaneously, the volume of the left pump chamber 3k is reduced, and the dialysate in the left pump chamber 3k sequentially flows through the left pump flow channel 3o, the left pump first valve cavity 3g, the first flow channel 3m and the perfusion valve cavity 3a to enter the heating liquid bag for heating.
When the valve seats 313 in the third fluid-supplementing valve cavity 3d, the filling valve cavity 3a, the right pump first valve cavity 3i and the left pump second valve cavity 3h are simultaneously opened, the volume of the left pump chamber 3k is increased, and the dialysate in the third fluid-supplementing valve cavity 3d flows through the third fluid-supplementing valve cavity 3d, the second flow channel 3n, the left pump second valve cavity 3h and the left pump flow channel 3o and enters the left pump chamber 3k. Simultaneously, the volume of the right pump chamber 3l is reduced, and the dialysate in the right pump chamber 3l sequentially flows through the right pump flow channel 3p, the right pump first valve cavity 3i, the first flow channel 3m and the perfusion valve cavity 3a to enter the heating liquid bag for heating.
After the dialysate stays in the patient for a set time, entering a waste discharge flow path:
when the valve seats 313 in the human body communication valve cavity 3e, the waste liquid valve cavity 3f, the right pump second valve cavity 3j and the left pump first valve cavity 3g are simultaneously opened, the volume of the right pump is increased, and the waste liquid sequentially passes through the human body communication valve cavity 3e, the second connecting channel, the right pump second valve cavity 3j and the right pump connecting channel to enter the right pump. Simultaneously, the left pump volume is reduced, and the liquid in the left pump chamber 3k is sequentially discharged through the left pump connecting channel, the left pump first valve cavity 3g, the first connecting channel and the waste liquid valve cavity 3 f.
When the valve seats 313 in the human body communication valve cavity 3e, the waste liquid valve cavity 3f, the right pump first valve cavity 3i and the left pump second valve cavity 3h are simultaneously opened, the left pump volume is increased, and the waste liquid sequentially enters the left pump through the human body communication valve cavity 3e, the second connecting channel, the left pump first valve cavity 3g and the left pump connecting channel. Simultaneously, the volume of the right pump is reduced, and liquid in the right pump chamber 3l is sequentially discharged through the right pump connecting channel, the right pump first valve cavity 3i, the right pump second connecting channel and the waste liquid valve cavity 3 f.
The utility model also provides a peritoneal dialysis machine comprising a pressure control device and the cassette 3, wherein the pressure control device comprises a gas cylinder and a pneumatic device (not shown in the figure) connected with the gas cylinder through a gas pipe, and the pneumatic device drives the soft diaphragm 32 of the cassette 3 to press or separate from the matrix 31 under the action of the pressure of gas output by the gas cylinder. The pneumatic device includes a first pneumatic member having a frame structure that mates with the wall surface of the first side and the wall surface of the second side of the base 31, and the first pneumatic member brings the soft diaphragm 32 into close contact with or away from the wall surface of the first side and the wall surface of the second side of the base 31 at a position opposite to the frame, forming respective valve chambers, pump chambers, and flow passages. The pneumatic device further comprises a plurality of second pneumatic components which are opposite to the valve seats 313 one by one, and the second pneumatic components drive the soft diaphragm 32 to be close to or away from the valve seat 313 at the position opposite to one valve seat 313, so that the liquid path is opened and closed; the pneumatic device further includes a third pneumatic member opposed to the left pump chamber 3k and a fourth pneumatic member opposed to the right pump chamber 3l, the third pneumatic member and the fourth pneumatic member alternately pressing the positions of the soft diaphragm 32 opposed to the left pump chamber 3k and the right pump chamber 3l to discharge the liquid, or alternately sucking the positions of the soft diaphragm 32 opposed to the left pump chamber 3k and the right pump chamber 3l to absorb the liquid.
The gas cylinder of the peritoneal dialysis machine comprises a cylinder body A and a cover body B. As shown in fig. 8, the bottle body a is provided with a large positive pressure air cavity 11, a large negative pressure air cavity 12, a small positive pressure air cavity 13 and a small negative pressure air cavity 14 which are mutually independent, and the cover body B forms a seal for the large positive pressure air cavity 11, the large negative pressure air cavity 12, the small positive pressure air cavity 13 and the small negative pressure air cavity 14 respectively. In this embodiment, as shown in fig. 6, a sealing gasket C is disposed between the cover body B and the bottle body a, so that sealing is formed between the air cavities, in this embodiment, a silica gel sealing gasket is adopted, so that the sealing performance is good, the aging is not easy, and the service life of the air bottle is longer. The outer wall of the bottle body A is provided with a mounting bulge A8, the mounting bulge A8 is provided with a mounting through hole, and the mounting bulge A8 can be fixed with a fixing frame or other supports after passing through the mounting through hole through a bolt. When the cover body B is fixed with the bottle body A, the cover body B forms the bottom wall of the gas bottle, and the openings of the large positive pressure gas cavity 11, the large negative pressure gas cavity 12, the small positive pressure gas cavity 13 and the small negative pressure gas cavity 14 face the cover body B. As shown in fig. 5, the top wall of the gas cylinder is provided with a plurality of air inlet holes and air outlet holes of the electromagnetic valves, which are used for installing the electromagnetic valves, and the connection relation and the function between each electromagnetic valve and the electromagnetic valve hole are described one by one below. All solenoid valves used in this embodiment are two-position three-way valves, as shown in fig. 7, having ports I, ii and iii, and all valves are normally closed valves.
The bottle body A is provided with:
an air inlet passage 15, as shown in fig. 12, for communicating with the positive pressure end of the air pump, for receiving the positive pressure air flow generated by the air pump;
as shown in fig. 12, one end of an air inlet hole K24 of the large positive pressure air cavity air inlet electromagnetic valve is connected with the air inlet channel 15, and the other end of the air inlet hole K24 is connected with an opening i of the large positive pressure air cavity air inlet electromagnetic valve 24;
an air outlet hole (not shown in the figure) of the large positive pressure air cavity air inlet electromagnetic valve, one end of the air outlet hole is used for being connected with the II port of the large positive pressure air cavity air inlet electromagnetic valve 24, and the other end of the air outlet hole is connected with the large positive pressure air cavity 11;
through the air inlet channel 15, the air inlet hole K24 of the air inlet electromagnetic valve of the large positive pressure air cavity, the air outlet hole of the air inlet electromagnetic valve of the large positive pressure air cavity and the air inlet electromagnetic valve 24 of the large positive pressure air cavity, the air flow entering the large positive pressure air cavity 11 from the air inlet channel 15 can be controlled, so that the pressure in the large positive pressure air cavity 11 is controlled, the bottle body A is provided with a plurality of pressure measuring through holes A9, each pressure measuring through hole A9 is provided with a tower connector A6, each tower connector A6 is connected with an air pipe (not shown in the figure), the air pipe is connected with an air pressure sensor (not shown in the figure), and the II port of the air inlet hole K24 of the air inlet electromagnetic valve of the large positive pressure air cavity is communicated with one of the pressure measuring through holes A9, so that the air pressure of the large positive pressure air cavity 11 can be detected. The air pressure of the large positive pressure air cavity is controlled to be 0mbar to +500mbar, in the embodiment, the pressure in the large positive pressure air cavity 11 is controlled to be about 400mbar, when the air pressure value of the large positive pressure air cavity 11 is lower than the set lower limit value, the port II of the electromagnetic valve 24 is communicated with the port I, and the air inlet channel 15 supplements air to the air pressure set value with the large positive pressure air cavity 11.
The bottle A is also provided with:
a large positive air pressure channel 17 communicated with the large positive air pressure cavity 11;
as shown in fig. 10, one ends of the air inlets K218 i-K227 i of the plurality of liquid path control electromagnetic valves are respectively communicated with the large positive air pressure channel 17, and the other ends are connected with the ports i of the plurality of liquid path control electromagnetic valves 218-227 in a one-to-one correspondence manner;
an atmospheric pressure channel 18;
the air outlet holes K218 III-K227 III of the liquid path control electromagnetic valves are shown in FIG. 11, one ends of the air outlet holes K218 III-K227 III of the liquid path control electromagnetic valves are respectively communicated with the atmospheric pressure channel 18, and the other ends are used for being connected with the III ports of the liquid path control electromagnetic valves 218-227 in a one-to-one correspondence manner, wherein FIG. 14 shows the air inlet hole K218I of the liquid path control electromagnetic valve 218, the air outlet hole K218 III of the liquid path control electromagnetic valve, the control hole K218 II of the liquid path control electromagnetic valve and the load hole A11 used for communicating the control hole K218 II with the outside of the gas cylinder;
one end of the air return channel 16 is used for being communicated with the negative pressure end of the air pump;
an air inlet hole (not shown in the figure) of the air return electromagnetic valve of the large negative pressure air cavity, one end of the air return electromagnetic valve is communicated with the large negative pressure air cavity 12, and the other end of the air return electromagnetic valve is connected with an II port of the air return electromagnetic valve 21 of the large negative pressure air cavity;
The air outlet hole K21 of the air return electromagnetic valve of the large negative pressure air cavity is provided with one end which is used for being connected with the III port of the air return electromagnetic valve 21 of the large negative pressure air cavity, and the other end which is communicated with the air return channel 16 as shown in figure 13;
through the structure, the gas in the large positive pressure air cavity 11 can flow to the large positive air pressure channel 17 and then enter the plurality of liquid path control electromagnetic valves 218-227, when the II port of one liquid path control electromagnetic valve 218-227 is communicated with the I port, the positive pressure generated by the II port of the liquid path control electromagnetic valve 218-227 is introduced into the corresponding second pneumatic piece through the gas, so that the position of the soft diaphragm opposite to the second pneumatic piece is tightly attached to the corresponding valve seat, and the liquid path is blocked to be disconnected. When the port II of a certain liquid path control electromagnetic valve 218-227 is communicated with the port III, the negative pressure generated by the gas flowing back to the port III through the port II of the liquid path control electromagnetic valve 218-227 enables the second pneumatic element to drive the corresponding position of the soft diaphragm to leave the corresponding valve seat, so that the liquid path is communicated. The pressure of the large negative pressure air cavity 12 is controlled between 0mbar and-500 mbar. In this embodiment, the pressure of the atmospheric pressure chamber 12 can be detected by controlling the pressure to be about-400 mbar, and the port II of the air outlet K21 of the atmospheric pressure chamber air return electromagnetic valve is communicated with one of the pressure measuring through holes A9. When the absolute value of the air pressure of the large negative pressure air cavity 12 is lower than the set lower limit value, the port II of the electromagnetic valve 21 is communicated with the port III, the large negative pressure air cavity is complemented with pressure to restore to the set value, fig. 15 shows the air path schematic diagram of the air bottle, and the direction of the air flow direction of each electromagnetic valve can be seen from fig. 15.
In this embodiment, as shown in fig. 5 and 6, the wall of the bottle a is provided with a first pump joint hole A1 communicating the air intake passage 15 with the positive pressure end of the air pump and a first pump joint A3 mounted to the first pump joint hole A1, and the wall of the bottle a is also provided with a second pump joint hole A3 communicating the air return passage 16 with the negative pressure end of the air pump and a second pump joint A4 mounted to the second pump joint hole A3.
The gas cylinder is also provided with:
as shown in fig. 14, one end of the air inlet hole K29I of the small positive pressure air cavity air inlet electromagnetic valve is connected with the air inlet channel 15, and the other end is connected with the port I of the small positive pressure air cavity air inlet electromagnetic valve 29;
one end of the air outlet hole K29 II of the small positive pressure air cavity air inlet electromagnetic valve is connected with the II port of the small positive pressure air cavity air inlet electromagnetic valve 29, and the other end of the air outlet hole K29 II is connected with the small positive pressure air cavity 13;
the air inlet hole K29I and the air outlet hole of the air inlet electromagnetic valve of the small positive pressure air cavity can be provided with the air inlet electromagnetic valve 29 of the small positive pressure air cavity, the air pressure of the small positive pressure air cavity 13 can be controlled through the air inlet electromagnetic valve 29 of the small positive pressure air cavity, the air pressure of the small positive pressure air cavity 13 is controlled to be 0-500 mbar, in the embodiment, the II port of the air inlet electromagnetic valve 29 of the small positive pressure air cavity is communicated with one of the pressure measuring through holes A9, so that the air pressure of the small negative pressure air cavity 13 can be detected, when the air pressure value of the small positive pressure air cavity 14 exceeds a set value, the electromagnetic valve 29 is started, namely, the I port and the II port of the electromagnetic valve 29 are communicated, and the air inlet channel 15 supplements the small positive pressure air cavity 13 to the air pressure set value.
The bottle A is also provided with:
a left pump chamber channel 19, as shown in fig. 14, for communicating with a driver (not shown in the figure) for driving membrane deformation of a left pump chamber of a liquid pump (not shown in the figure), thereby driving liquid into or out of the left pump chamber;
a right pump chamber channel 1a, as shown in fig. 14, for communicating with a driver (not shown in the figure) for driving the membrane deformation of the right pump chamber of the liquid pump, thereby driving the liquid into or out of the right pump chamber;
as shown in fig. 14, one end of the air inlet K211I of the first electromagnetic valve is connected with the small positive pressure air cavity 13, and the other end of the air inlet K211I is connected with the first electromagnetic valve;
one end of the air outlet hole K211 II of the first air outlet electromagnetic valve of the small positive pressure air cavity is used for being connected with the air outlet hole II of the first air outlet electromagnetic valve of the small positive pressure air cavity, and the other end of the air outlet hole K211 II is communicated with the left pump chamber channel 19, as shown in fig. 14;
as shown in fig. 14, one end of the air inlet hole K216I of the second electromagnetic valve is connected with the small positive pressure air cavity 13, and the other end of the air inlet hole K is connected with the I port of the air outlet second electromagnetic valve 216 of the small positive pressure air cavity;
one end of the air outlet hole K216 II of the second electromagnetic valve is used for being connected with the air outlet port II of the second electromagnetic valve of the small positive pressure air cavity, and the other end of the air outlet hole K216 II is communicated with the right pump chamber channel 1a, as shown in fig. 14;
Through the structure, the small positive pressure air cavity air outlet first electromagnetic valve 211 and the small positive pressure air cavity air outlet second electromagnetic valve 216 can be arranged, when the I port and the II port of the small positive pressure air cavity air outlet first electromagnetic valve 211 are communicated, air enters the third pneumatic piece, the position of the soft diaphragm opposite to the left pump chamber is extruded, the volume of the left pump chamber is reduced, and at the moment, liquid in the left pump chamber is extruded. When the port I of the second electromagnetic valve 216 is communicated with the port II, the air enters the fourth pneumatic element to squeeze the position of the soft diaphragm opposite to the right pump chamber, and at the moment, the liquid in the right pump chamber is squeezed out. The first air outlet electromagnetic valve 211 of the small positive pressure air cavity and the second air outlet electromagnetic valve 216 of the small positive pressure air cavity can be controlled to alternately communicate the I port and the II port, so that the liquid in the left pump chamber and the right pump chamber is controlled to be alternately extruded.
The bottle A is also provided with:
an air inlet hole (not shown in the figure) of the first electromagnetic valve for the air intake of the small negative pressure air cavity, one end of the air inlet hole is used for being communicated with a driver for driving the membrane deformation of the left pump chamber of the liquid pump, and the other end of the air inlet hole is used for being connected with an II port of the first electromagnetic valve 213 for the air intake of the small negative pressure air cavity;
an air outlet hole (not shown in the figure) of the first electromagnetic valve for air intake of the small negative pressure air cavity, one end of the air outlet hole is used for being connected with the III port of the first electromagnetic valve 213 for air intake of the small negative pressure air cavity, and the other end of the air outlet hole is communicated with the small negative pressure air cavity 14;
An air inlet hole (not shown in the figure) of the second electromagnetic valve for the air inlet of the small negative pressure air cavity, one end of the air inlet hole is used for being communicated with a driver for driving the membrane deformation of the right pump chamber of the liquid pump, and the other end of the air inlet hole is used for being connected with an II port of the second electromagnetic valve 214 for the air inlet of the small negative pressure air cavity;
an air outlet hole (not shown in the figure) of the second electromagnetic valve for air intake of the small negative pressure air cavity, one end of the air outlet hole is used for being connected with the III port of the second electromagnetic valve 214 for air intake of the small negative pressure air cavity, and the other end of the air outlet hole is communicated with the small negative pressure air cavity 14;
an air inlet hole (not shown in the figure) of the small negative pressure air cavity air return electromagnetic valve, one end of the air inlet hole is communicated with the small negative pressure air cavity 14, and the other end of the air inlet hole is connected with an II port of the small negative pressure air cavity air return electromagnetic valve 28;
and as shown in fig. 13, one end of the air outlet hole K28 of the small negative pressure air cavity air return electromagnetic valve is connected with the III port of the small negative pressure air cavity air return electromagnetic valve 28, and the other end of the air outlet hole K is communicated with the air return channel 16.
Through the structure, the small negative pressure air cavity air inlet first electromagnetic valve 213, the small negative pressure air cavity air inlet second electromagnetic valve 214 and the small negative pressure air cavity air return electromagnetic valve 28 can be arranged, and air in the left pump chamber can enter the small negative pressure air cavity 14 through the small negative pressure air cavity air inlet first electromagnetic valve 213, and at the moment, the third pneumatic piece adsorbs the position of the soft diaphragm opposite to the left pump chamber, so that the cavity volume of the left pump chamber is enlarged, and liquid is sucked. The gas in the right pump chamber can enter the small negative pressure air chamber 14 through the second electromagnetic valve 214 which is air-inlet in the small negative pressure air chamber, at this time, the membrane in the right pump chamber deforms under the negative pressure adsorption action of the fourth pneumatic element, so that the cavity volume of the right pump chamber becomes larger, and at this time, the right pump chamber sucks liquid. The two solenoid valves 213, 214 are controlled to alternately communicate port III and port II, so that the air in the left and right pumping chambers alternately enters the small negative pressure air chamber 14 to alternately discharge the liquid. The air pressure of the small negative pressure air cavity 14 is controlled to be between-500 mbar and 0mbar, in the embodiment, the air pressure of the small negative pressure air cavity is controlled to be about-300 mbar, the port II of the air return electromagnetic valve 28 of the small negative pressure air cavity is communicated with one of the pressure measuring through holes A9, so that the air pressure of the small negative pressure air cavity 14 can be detected, and when the air pressure value of the small negative pressure air cavity 13 is lower than the set lower limit value, the electromagnetic valve 28 is started to enable the port III and the port II of the small negative pressure air cavity 13 to be communicated, and the air pressure value of the small negative pressure air cavity 13 is restored to the air pressure set value.
The air cylinders of the peritoneal dialysis machine are provided with the large positive pressure air cavity 11, the large negative pressure air cavity 12, the small positive pressure air cavity 13 and the small negative pressure air cavity 14, so that the electromagnetic valve can be directly arranged on the air cylinders without a confluence plate, the functions of the existing air cylinders and the existing confluence plate can be realized, the structure is simpler and more compact, the occupied volume is smaller, and an air pipe is not required to be arranged between the air cylinders and the confluence plate, thereby reducing the probability of air leakage. The bottle can be integrated into one piece, for example die casting or casting, then each passageway and be used for connecting the air inlet and the venthole of each electromagnetism of installation are processed out on the bottle, and processing is simpler, has reduced the processing degree of difficulty and has reduced the processingvolume.
As shown in fig. 8, the large negative pressure air chamber 12, the large positive pressure air chamber 11, the small positive pressure air chamber 13 and the small negative pressure air chamber 14 are arranged in parallel and in sequence. At least one reinforcing rib A5 is arranged in each of the large negative pressure air cavity 12, the large positive pressure air cavity 11, the small positive pressure air cavity 13 and the small negative pressure air cavity 14, the reinforcing rib A5 is perpendicular to the length direction of each air cavity, one end of the reinforcing rib A5 is connected with the inner wall of one side of each air cavity, and the other end of the reinforcing rib A5 is connected with the inner wall of the opposite side of each air cavity. The reinforcing rib A5 can strengthen the structure of the rectangular air cavities and prevent the walls of each air cavity from deforming, so that the structure of the air cylinder is more stable.
The gas cylinder as shown in fig. 6 further comprises a large positive pressure air cavity air inlet electromagnetic valve 24, a plurality of liquid path control electromagnetic valves 218-227, a large negative pressure air cavity air return electromagnetic valve 21, a small positive pressure air cavity air inlet electromagnetic valve 29, a small positive pressure air cavity air outlet first electromagnetic valve 211, a small positive pressure air cavity air outlet second electromagnetic valve 216, a small negative pressure air cavity air inlet first electromagnetic valve 213, a small negative pressure air cavity air inlet second electromagnetic valve 214 and a small negative pressure air cavity air return electromagnetic valve 28, and the gas cylinder further comprises a circuit board D arranged on the cylinder body A, wherein the circuit board D is provided with a controller (not shown in the figure) which is respectively connected with all the electromagnetic valves and the air pumps of the utility model so as to control the electromagnetic valves and the air pumps, in the utility model, all the air pressure sensors are connected with the controller, working parameters of the air pumps and the pressure values of all the cavities are set for the controller, and when the data transmitted by the air pressure sensors are lower than the set values, the corresponding electromagnetic valves are controlled to the corresponding cavity air pumps so as to restore the air pressure in the corresponding cavities to the set values.
The air cylinder of the peritoneal dialysis machine integrates the large positive pressure air cavity 11, the large negative pressure air cavity 12, the small positive pressure air cavity 13, the small negative pressure air cavity 14, all the electromagnetic valves and the circuit board D into one module, so that high integration is realized, the structure is more compact, the confluence plate is reduced, and the cost rise caused by the separation of the air cylinder and the electromagnetic valves in the prior art is reduced. In addition, the whole gas cylinder can be replaced when maintenance is needed, so that maintenance speed and efficiency are improved.
As shown in fig. 5 and 6, the outer wall of the top wall of the cylinder body is provided with a plurality of protruding columns a12, the protruding columns a12 and the circuit board D are each provided with a mounting hole, and the circuit board D is mounted to the cylinder by means of screws passing through the mounting holes of the protruding columns a12 and the mounting holes of the circuit board D, by which the circuit board can be positioned and mounted rapidly. In this embodiment, the number of the hydraulic control solenoid valves 218 to 227 is 10, and of course, the number of the hydraulic control solenoid valves 218 to 227 may be set according to actual needs.
The gas cylinder is also provided with:
an air inlet hole K27 of the high-pressure cavity air inlet electromagnetic valve is shown in FIG. 12, one end of the air inlet hole K27 is communicated with the air inlet channel 15, and the other end of the air inlet hole K27 is communicated with an I port of the high-pressure cavity air inlet electromagnetic valve 27;
an air outlet hole (not shown) of the high-pressure cavity air inlet electromagnetic valve, one end of which is used for communicating with the II port of the high-pressure cavity air inlet electromagnetic valve 27, and the other end of which is communicated with the high-pressure cavity;
an air inlet hole (not shown in the figure) of the first electromagnetic valve for the air outlet of the high-pressure cavity, one end of the air inlet hole is communicated with the high-pressure cavity, and the other end of the air inlet hole is communicated with an I port of the first electromagnetic valve 210 for the air outlet of the high-pressure cavity;
an air outlet hole (not shown) of the first air outlet valve of the high-pressure cavity, one end of which is used for communicating with the II port of the first air outlet valve 210 of the high-pressure cavity, and the other end of which is communicated with the left pump chamber channel 19;
An air inlet hole (not shown in the figure) of the high-pressure cavity air outlet second electromagnetic valve, one end of the air inlet hole is communicated with the high-pressure cavity, and the other end of the air inlet hole is communicated with an I port of the high-pressure cavity air outlet first electromagnetic valve 210;
an air outlet hole (not shown) of the high-pressure cavity air outlet second electromagnetic valve, one end of the air outlet hole is used for being communicated with an II port of the high-pressure cavity air outlet second electromagnetic valve 217, the other end of the air outlet hole is communicated with the right pump chamber channel 1a, the left pump chamber channel is controlled to be-500 mbar to +500mbar, when the air pressure is applied to the air outlet hole, the air pressure is controlled to be-500 mbar to 0mbar, and when the air pressure is applied to the air outlet hole, the air pressure is controlled to be 0mbar to +500mbar.
The gas cylinder further comprises the high-pressure cavity gas inlet electromagnetic valve 27, a high-pressure cavity gas outlet first electromagnetic valve 210 and a high-pressure cavity gas outlet second electromagnetic valve 217, and the high-pressure cavity gas inlet electromagnetic valve 27, the high-pressure cavity gas outlet first electromagnetic valve 210 and the high-pressure cavity gas outlet second electromagnetic valve 217 are respectively connected with the circuit board D. In this embodiment, the gas cylinder further comprises a high-pressure chamber module (not shown in the figure), the high-pressure chamber module comprises a high-pressure chamber, the pressure of the high-pressure chamber ranges from 0mbar to +500mbar, in this embodiment, the gas pressure of the high-pressure chamber is controlled to be about 350mbar, and the port II of the high-pressure chamber gas inlet electromagnetic valve 27 is communicated with one of the pressure measuring through holes A9, so that the gas pressure of the high-pressure chamber can be detected. The high-pressure chamber of the high-pressure chamber module may be connected to the port ii of the high-pressure chamber air inlet solenoid valve 27 through a high-pressure chamber air inlet pipe (not shown in the figure), and the port I of the high-pressure chamber and high-pressure chamber air outlet first solenoid valve 210 and the port I of the high-pressure chamber air outlet second solenoid valve are respectively connected through a high-pressure chamber air outlet pipe (not shown in the figure). Air pressure sensors (not shown) are provided in the left and right pump chambers 19 and 1a to detect the pressures of the left and right pump chambers, record the pressures and pressure changes, and calculate the volumes of the liquid pumped by the left and right pump chambers according to the gas equation.
The air bottle is also provided with air inlets of two air bag electromagnetic valves 25 and 26, as shown in fig. 12, one end of each air bag electromagnetic valve is communicated with the air inlet channel 15, and the other end is communicated with an I port of each air bag electromagnetic valve 25 and 26. The cylinder further comprises two said air-bag solenoid valves 25,26, which in this embodiment further comprises two air-bags (not shown in the figures) in one-to-one correspondence with the ports ii of the two air-bag solenoid valves 25, 26. One of the air bags is inflated and swelled to push the first air piece, and the first air piece can squeeze the soft diaphragm of the liquid cartridge 3 of the peritoneal dialysis machine to the corresponding position of the frame, so that the position of the soft diaphragm is tightly attached to the wall surface of the first side and the wall surface of the second side of the base body, and a plurality of mutually independent and sealed valve cavities, pump chambers and flow channels are formed in the cartridge 3. The other air bag can be deflated when the peritoneal dialysis machine breaks down to push the fifth pneumatic piece to press all the liquid pipelines to cut off the liquid passages, so that the liquid in all the liquid pipelines cannot flow, and the liquid is prevented from continuously flowing to hurt the human body. The port II of the two air bag electromagnetic valves 25 and 26 are respectively communicated with two of the pressure measuring through holes A9, so that the air pressure of the two air bags can be respectively detected, when the air pressure is lower than a set value, the electromagnetic valve 25 or 26 is started to enable the port I and the port II to be communicated, the air bags are inflated to the set value through the air inlet channel 15, and the air pressure of the air bags is controlled to be 0mbar to +1000mbar. The gas cylinder is also provided with:
An air outlet hole K22 of the air inlet electromagnetic valve of the air inlet channel is shown in fig. 13, one end of the air outlet hole K is communicated with the air return channel 16, and the other end of the air outlet hole K is communicated with a III port of the air inlet electromagnetic valve 22 of the air inlet channel;
as shown in fig. 12, one end of an air inlet hole K23 of the air inlet channel air outlet solenoid valve is communicated with the air inlet channel 15, and the other end is communicated with an I port of the air inlet channel air outlet solenoid valve 23.
The gas cylinder further comprises the air inlet channel air inlet electromagnetic valve 22 and the air inlet channel air outlet electromagnetic valve 23, wherein the II port of the air inlet channel air inlet electromagnetic valve 22 is communicated with the atmosphere, and the II port of the air inlet channel air outlet electromagnetic valve 23 is communicated with the atmosphere.
The air inlet channel 15 can be communicated with the atmosphere through the air inlet channel air inlet electromagnetic valve 22 and the air inlet channel air outlet electromagnetic valve 23, so that air supplementing from the atmosphere and air exhausting into the atmosphere are realized. The wall of the bottle body A is also provided with an atmosphere through hole A10 communicated with the II port of the air inlet electromagnetic valve 22 of the air inlet channel, the atmosphere through hole A10 forms an air inlet, the wall of the bottle body A is also provided with an atmosphere through hole A10 communicated with the II port of the air outlet electromagnetic valve 23 of the air inlet channel, the atmosphere through hole A10 forms an air outlet, the air inlet and the air outlet are both provided with an air filtering column A7, and air entering the air bottle and exhausted from the air bottle is filtered, so that the air in the air channel is kept clean without dust, the risk of faults such as air channel blockage caused by dust and the like is reduced, and the effect of reducing working noise is also achieved.
The gas cylinder is also provided with:
an air inlet hole (not shown) of the left pump chamber atmospheric solenoid valve, one end of which is communicated with a driver for driving the membrane deformation of the left pump chamber of the liquid pump, and the other end of which is communicated with an II port of the left pump chamber atmospheric solenoid valve 212;
an air inlet hole (not shown) of the right pump chamber atmospheric solenoid valve is connected at one end to a driver for driving the membrane deformation of the right pump chamber of the liquid pump, and at the other end to the port II of the right pump chamber atmospheric solenoid valve 215.
The gas cylinder further comprises a left pump chamber atmosphere electromagnetic valve 212 and a right pump chamber atmosphere electromagnetic valve 215, wherein an I port of the left pump chamber atmosphere electromagnetic valve 212 is communicated with the atmosphere, an I port of the right pump chamber atmosphere electromagnetic valve 215 is communicated with the atmosphere, and the left pump chamber and the right pump chamber can be controlled to realize the exhausting to the atmosphere.
The above embodiments are only exemplary embodiments of the present utility model and are not intended to limit the present utility model, the scope of which is defined by the claims. Various modifications and equivalent substitutions of the utility model will occur to those skilled in the art, which are within the spirit and scope of the utility model.
Claims (19)
1. A liquid cassette for a peritoneal dialysis machine, comprising a base and a flexible membrane covering a first side wall and a second side wall of the base, the first side and the second side being opposite, the first side of the base being provided with a plurality of mutually independent liquid tanks and two mutually independent pump tanks recessed relative to the wall thereof, the second side of the base being provided with a plurality of flow-through tanks recessed relative to the wall thereof;
A cylindrical valve seat is arranged in each liquid tank, one end of the valve seat is communicated with the liquid tank, the other end of the valve seat is communicated with one of the circulating tanks, the bottom wall of the liquid tank is taken as a reference, and the distance between one end of the valve seat, which is far away from the reference, and the reference is smaller than the distance between the wall surface of the first side of the base body and the reference;
the soft diaphragm can seal a plurality of liquid grooves to form mutually independent filling valve cavities, liquid supplementing valve cavities, human body communicating valve cavities, waste liquid valve cavities, left pump first valve cavities, left pump second valve cavities, right pump first valve cavities and right pump second valve cavities when being pressed on the wall surfaces of the first side and the second side of the matrix, seal two pump grooves to form mutually independent left pump cavities and right pump cavities respectively, seal a plurality of circulating grooves to form mutually independent left pump flow channels, right pump flow channels, first flow channels and second flow channels respectively, and the matrix is also provided with a plurality of pipe connecting holes which are communicated with the filling valve cavities, the liquid supplementing valve cavities, the human body communicating valve cavities and the waste liquid valve cavities in a one-to-one correspondence manner;
the valve seat in the pouring valve cavity and the valve seat in the waste liquid valve cavity are communicated with the first flow channel, the valve seat in the fluid supplementing valve cavity and the valve seat in the human body communicating valve cavity are communicated with the second flow channel, the valve seat in the left pump first valve cavity and the valve seat in the left pump second valve cavity are communicated with the left pump flow channel, the valve seat in the right pump first valve cavity and the valve seat in the right pump second valve cavity are communicated with the right pump flow channel, the left pump first valve cavity and the right pump first valve cavity are respectively communicated with the first flow channel, the left pump second valve cavity and the right pump second valve cavity are respectively communicated with the second flow channel, the left pump chamber and the left pump flow channel are communicated, and the right pump chamber and the right pump flow channel are communicated.
2. The cartridge of claim 1, wherein the cartridge comprises three of the fluid-filled valve chambers.
3. The cartridge according to claim 2, wherein four chambers among the filling valve chamber, the human body communication valve chamber, the waste liquid valve chamber and the three fluid supplementing valve chambers are arranged at the leftmost end of the cartridge in the width direction of the leftmost end of the cartridge, the four chambers are communicated with four connecting pipe holes positioned at the first side of the base body in a one-to-one correspondence manner, the other two chambers are arranged at the right side of the four chambers in the width direction of the cartridge, the second side of the base body is provided with two fluid inlet channels, the two fluid inlet channels are communicated with the other two chambers in a one-to-one correspondence manner, and the two fluid inlet channels are communicated with the two connecting pipe holes positioned at the second side of the base body in a one-to-one correspondence manner, and the connecting pipe holes are all arranged at the leftmost end of the base body.
4. A cartridge according to claim 3, wherein the two chambers are each one of a priming valve chamber and three fluid-replacement valve chambers.
5. A cartridge as in claim 3, wherein the left and right pump chambers are elliptical and the depth of the middle portions of the left and right pump chambers is greater than the depth of the rim, the left and left pump first and second valve chambers are located to the left of the left pump chamber, the left pump flow passage is opposite the rim of the left pump chamber adjacent the left and left pump first and second valve chambers, the right and right pump first and second valve chambers are located between the left and right pump chambers, and the right pump flow passage is opposite the rim of the right pump chamber adjacent the right and first valve chambers.
6. A cartridge according to claim 3, wherein the base body is provided with communication holes communicating the first side and the second side of the base body at positions where the two liquid inlet passages are opposed to the other two chambers, respectively, at positions where the left pump first valve chamber is opposed to the first flow passage, at positions where the right pump first valve chamber is opposed to the first flow passage, at positions where the left pump second valve chamber is opposed to the second flow passage, at positions where the right pump second valve chamber is opposed to the second flow passage, at positions where the left pump chamber is opposed to the left pump flow passage, and at positions where the right pump chamber is opposed to the right pump flow passage.
7. The cartridge of claim 1, wherein the base is integrally formed by injection molding.
8. The cartridge of any one of claims 1-7, wherein the base has a first vertical wall perpendicular to the first side wall and a second vertical wall opposite the first vertical wall, each of the first and second vertical walls connecting a left end and a right end of the cartridge, a right portion of the first vertical wall being closer to the second vertical wall than the left portion.
9. A cartridge according to any one of claims 1 to 7, comprising two sheets of said flexible membrane, each of said sheets being bonded to the edges of the sides of said substrate in a one-to-one correspondence.
10. A peritoneal dialysis machine comprising a pressure control device and a cassette according to any one of claims 1 to 9, the pressure control device comprising a gas cylinder and a pneumatic device connected to the gas cylinder by a gas line, the pneumatic device driving a flexible membrane of the cassette to compress or to move away from the substrate under the pressure of the gas output from the gas cylinder.
11. The peritoneal dialysis machine of claim 10 wherein the pneumatic arrangement comprises a first pneumatic element having a frame structure that mates with the wall of the first side and the wall of the second side of the base; the pneumatic device further comprises a plurality of second pneumatic pieces which are opposite to the valve seats one by one; the pneumatic device further includes a third pneumatic member opposite the left pump chamber and a fourth pneumatic member opposite the right pump chamber.
12. The peritoneal dialysis machine of claim 10 or 11, wherein the gas cylinder comprises a cylinder body and a cover body, the cylinder body being provided with:
the air inlet channel is used for communicating with the positive pressure end of the air pump;
a large positive pressure air cavity;
one end of the air inlet hole of the large positive pressure air cavity air inlet electromagnetic valve is connected with the air inlet channel, and the other end of the air inlet hole is connected with the I port of the large positive pressure air cavity air inlet electromagnetic valve;
One end of the air outlet hole of the large positive pressure air cavity air inlet electromagnetic valve is connected with the II port of the large positive pressure air cavity air inlet electromagnetic valve, and the other end of the air outlet hole is connected with the large positive pressure air cavity;
the large positive pressure air channel is communicated with the large positive pressure air cavity;
one end of the air inlet holes of the liquid path control electromagnetic valves is respectively communicated with the large positive air pressure channel, and the other end of the air inlet holes of the liquid path control electromagnetic valves is connected with the I ports of the liquid path control electromagnetic valves in a one-to-one correspondence manner;
the atmosphere negative pressure channel is connected with the III ports of the liquid path control electromagnetic valves;
one ends of the air outlet holes of the liquid path control electromagnetic valves are respectively communicated with the atmospheric pressure channels, and the other ends of the air outlet holes of the liquid path control electromagnetic valves are connected with the III ports of the liquid path control electromagnetic valves in a one-to-one correspondence manner;
the large negative pressure air cavity is communicated with the large negative pressure channel;
one end of the air return channel is communicated with the negative pressure end of the air pump;
one end of the air inlet hole of the air return electromagnetic valve of the large negative pressure air cavity is communicated with the large negative pressure air cavity, and the other end of the air inlet hole is connected with the II port of the air return electromagnetic valve of the large negative pressure air cavity;
one end of the air outlet hole of the air return electromagnetic valve of the large negative pressure air cavity is connected with the III port of the air return electromagnetic valve of the large negative pressure air cavity, and the other end of the air outlet hole is communicated with the air return channel;
A small positive pressure air cavity;
one end of the air inlet hole of the small positive pressure air cavity air inlet electromagnetic valve is connected with the air inlet channel, and the other end of the air inlet hole is connected with the I port of the small positive pressure air cavity air inlet electromagnetic valve;
one end of the air outlet hole of the small positive pressure air cavity air inlet electromagnetic valve is connected with the II port of the small positive pressure air cavity air inlet electromagnetic valve, and the other end of the air outlet hole is connected with the small positive pressure air cavity;
a left pump chamber channel for communicating with a driver that drives a membrane of a left pump chamber of the liquid pump;
a right pump chamber channel for communicating with a driver that drives a membrane of a right pump chamber of the liquid pump;
one end of the air inlet hole of the first electromagnetic valve is connected with the small positive pressure air cavity, and the other end of the air inlet hole is connected with the first electromagnetic opening of the air outlet of the small positive pressure air cavity;
one end of the air outlet hole of the first air outlet electromagnetic valve of the small positive pressure air cavity is connected with the II port of the air outlet first electromagnetic valve of the small positive pressure air cavity, and the other end of the air outlet hole is communicated with the left pump chamber channel;
one end of the air inlet hole of the second electromagnetic valve is connected with the small positive pressure air cavity, and the other end of the air inlet hole is connected with the I port of the second electromagnetic valve;
one end of the air outlet hole of the second electromagnetic valve is connected with the second electromagnetic port of the air outlet of the small positive pressure air cavity, and the other end of the air outlet hole is communicated with the right pump chamber channel;
A small negative pressure air cavity;
one end of the air inlet hole of the first air inlet electromagnetic valve of the small negative pressure air cavity is communicated with the left pump chamber channel, and the other end of the air inlet hole is connected with the II port of the first air inlet electromagnetic valve of the small negative pressure air cavity;
one end of the air outlet hole of the small negative pressure air cavity air inlet first electromagnetic valve is connected with the III port of the small negative pressure air cavity air inlet first electromagnetic valve, and the other end of the air outlet hole is communicated with the small negative pressure air cavity;
one end of the air inlet hole of the second air inlet electromagnetic valve of the small negative pressure air cavity is communicated with the right pump chamber channel, and the other end of the air inlet hole of the second air inlet electromagnetic valve of the small negative pressure air cavity is connected with the II port of the second air inlet electromagnetic valve of the small negative pressure air cavity;
one end of the air outlet hole of the second electromagnetic valve is connected with the III port of the second electromagnetic valve, and the other end of the air outlet hole is communicated with the small negative pressure air cavity;
one end of the air inlet hole of the small negative pressure air cavity air return electromagnetic valve is communicated with the small negative pressure air cavity, and the other end of the air inlet hole is connected with the II port of the small negative pressure air cavity air return electromagnetic valve;
one end of the air outlet hole of the small negative pressure air cavity air return electromagnetic valve is connected with the III port of the small negative pressure air cavity air return electromagnetic valve, and the other end of the air outlet hole is communicated with the air return channel;
the large positive pressure air cavity, the large negative pressure air cavity, the small positive pressure air cavity and the small negative pressure air cavity are mutually independent, and the cover body forms sealing closure for the large positive pressure air cavity, the large negative pressure air cavity, the small positive pressure air cavity and the small negative pressure air cavity respectively;
The gas cylinder also comprises a large positive pressure air cavity air inlet electromagnetic valve, a plurality of liquid path control electromagnetic valves, a large negative pressure air cavity air return electromagnetic valve, a small positive pressure air cavity air inlet electromagnetic valve, a small positive pressure air cavity air outlet first electromagnetic valve, a small positive pressure air cavity air outlet second electromagnetic valve, a small negative pressure air cavity air inlet first electromagnetic valve, a small negative pressure air cavity air inlet second electromagnetic valve and a small negative pressure air cavity air return electromagnetic valve, and the gas cylinder also comprises a circuit board arranged on the cylinder body, wherein the circuit board is provided with a controller which is respectively connected with each electromagnetic valve and a gas pump so as to control each electromagnetic valve and the gas pump.
13. The peritoneal dialysis machine of claim 12, wherein the gas cylinder is further provided with:
one end of the air inlet hole of the high-pressure cavity air inlet electromagnetic valve is communicated with the air inlet channel, and the other end of the air inlet hole is communicated with the I port of the high-pressure cavity air inlet electromagnetic valve;
one end of the air outlet hole of the high-pressure cavity air inlet electromagnetic valve is communicated with the II port of the high-pressure cavity air inlet electromagnetic valve, and the other end of the air outlet hole is communicated with the high-pressure cavity;
one end of the air inlet hole of the first air outlet electromagnetic valve of the high-pressure cavity is communicated with the high-pressure cavity, and the other end of the air inlet hole is communicated with the I port of the first air outlet electromagnetic valve of the high-pressure cavity;
one end of the air outlet hole of the high-pressure cavity air outlet first electromagnetic valve is communicated with the II port of the high-pressure cavity air outlet first electromagnetic valve, and the other end of the air outlet hole is communicated with the left pump chamber channel;
One end of the air inlet hole of the high-pressure cavity air outlet second electromagnetic valve is communicated with the high-pressure cavity, and the other end of the air inlet hole is communicated with the I port of the high-pressure cavity air outlet second electromagnetic valve;
one end of the air outlet hole of the high-pressure cavity air outlet second electromagnetic valve is communicated with the II port of the high-pressure cavity air outlet second electromagnetic valve, and the other end of the air outlet hole is communicated with the right pump chamber channel;
the gas cylinder further comprises a high-pressure cavity gas inlet electromagnetic valve, a high-pressure cavity gas outlet first electromagnetic valve and a high-pressure cavity gas outlet second electromagnetic valve, and the high-pressure cavity gas inlet electromagnetic valve, the high-pressure cavity gas outlet first electromagnetic valve and the high-pressure cavity gas outlet second electromagnetic valve are respectively connected with the circuit board.
14. The peritoneal dialysis machine of claim 12, wherein the gas cylinder is further provided with gas inlets of two air bag solenoid valves, one end of each gas inlet of each air bag solenoid valve is communicated with the gas inlet channel, the other end of each gas inlet of each air bag solenoid valve is communicated with an I port of each air bag solenoid valve, the gas cylinder further comprises two air bag solenoid valves, the two air bag solenoid valves are respectively connected with the circuit board, and the gas cylinder further comprises two air bags communicated with II ports of the two air bag solenoid valves in a one-to-one correspondence.
15. The peritoneal dialysis machine of claim 12, wherein the gas cylinder is further provided with:
One end of the air outlet hole of the air inlet electromagnetic valve of the air inlet channel is communicated with the air return channel, and the other end of the air outlet hole is communicated with the III port of the air inlet electromagnetic valve of the air inlet channel;
one end of the air inlet hole of the air inlet channel air outlet electromagnetic valve is communicated with the air inlet channel, and the other end of the air inlet hole is communicated with the I port of the air inlet channel air outlet electromagnetic valve;
the gas cylinder further comprises the air inlet electromagnetic valve of the air inlet channel and the air outlet electromagnetic valve of the air inlet channel, the air inlet electromagnetic valve of the air inlet channel and the air outlet electromagnetic valve of the air inlet channel are respectively connected with the circuit board, the II port of the air inlet electromagnetic valve of the air inlet channel is communicated with the atmosphere, and the II port of the air outlet electromagnetic valve of the air inlet channel is communicated with the atmosphere.
16. The peritoneal dialysis machine of claim 12, wherein the gas cylinder is further provided with:
one end of the air inlet hole of the left pump chamber atmospheric electromagnetic valve is communicated with the left pump chamber channel, and the other end of the air inlet hole is communicated with the II port of the left pump chamber atmospheric electromagnetic valve;
one end of the air inlet hole of the right pump chamber atmospheric electromagnetic valve is communicated with the right pump chamber channel, and the other end of the air inlet hole is communicated with the II port of the right pump chamber atmospheric electromagnetic valve;
the gas cylinder also comprises a left pump chamber atmospheric electromagnetic valve and a right pump chamber atmospheric electromagnetic valve, wherein an I port of the left pump chamber atmospheric electromagnetic valve is communicated with the atmosphere, an I port of the right pump chamber atmospheric electromagnetic valve is communicated with the atmosphere, and the left pump chamber atmospheric electromagnetic valve and the right pump chamber atmospheric electromagnetic valve are respectively connected with the circuit board.
17. The peritoneal dialysis machine of claim 12, wherein the air pressures of the large positive pressure air chamber, the small positive pressure air chamber and the high pressure air chamber are each controlled to be within the range of 0mbar to +500mbar, and the air pressures of the large negative pressure air chamber and the small negative pressure air chamber are each controlled to be within the range of 0mbar to +500mbar
-500mbar～0mbar。
18. The peritoneal dialysis machine of claim 14, wherein the air pressure of the air bladder is controlled between 0mbar and +1000mbar.
19. The peritoneal dialysis machine of claim 12, wherein the air pressure of both the left and right pumping chamber channels is controlled at-500 mbar to +500mbar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320399053.XU CN219941404U (en) | 2023-03-07 | 2023-03-07 | Liquid cartridge for peritoneal dialysis machine and peritoneal dialysis machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320399053.XU CN219941404U (en) | 2023-03-07 | 2023-03-07 | Liquid cartridge for peritoneal dialysis machine and peritoneal dialysis machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219941404U true CN219941404U (en) | 2023-11-03 |
Family
ID=88554328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320399053.XU Active CN219941404U (en) | 2023-03-07 | 2023-03-07 | Liquid cartridge for peritoneal dialysis machine and peritoneal dialysis machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219941404U (en) |
-
2023
- 2023-03-07 CN CN202320399053.XU patent/CN219941404U/en active Active
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