CN113694277B - Multistage pressure regulating formula hemofiltration device - Google Patents
Multistage pressure regulating formula hemofiltration device Download PDFInfo
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- CN113694277B CN113694277B CN202110950629.2A CN202110950629A CN113694277B CN 113694277 B CN113694277 B CN 113694277B CN 202110950629 A CN202110950629 A CN 202110950629A CN 113694277 B CN113694277 B CN 113694277B
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 16
- 238000002615 hemofiltration Methods 0.000 title claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 68
- 239000008280 blood Substances 0.000 claims abstract description 60
- 210000004369 blood Anatomy 0.000 claims abstract description 60
- 230000007246 mechanism Effects 0.000 claims abstract description 56
- 238000001914 filtration Methods 0.000 claims abstract description 52
- 239000012528 membrane Substances 0.000 claims abstract description 32
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 8
- 239000002699 waste material Substances 0.000 claims abstract description 6
- 238000004140 cleaning Methods 0.000 claims description 25
- 238000001514 detection method Methods 0.000 claims description 10
- 210000001367 artery Anatomy 0.000 claims description 7
- 210000003462 vein Anatomy 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 6
- 238000005192 partition Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 239000002861 polymer material Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 230000036772 blood pressure Effects 0.000 abstract description 7
- 230000009471 action Effects 0.000 description 8
- 239000000243 solution Substances 0.000 description 7
- 230000001502 supplementing effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000017531 blood circulation Effects 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 229920002521 macromolecule Polymers 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 210000001124 body fluid Anatomy 0.000 description 2
- 239000010839 body fluid Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
- A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
- A61M1/1601—Control or regulation
- A61M1/1603—Regulation parameters
- A61M1/1605—Physical characteristics of the dialysate fluid
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
- A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
- A61M1/168—Sterilisation or cleaning before or after use
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- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Urology & Nephrology (AREA)
- Anesthesiology (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Emergency Medicine (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- External Artificial Organs (AREA)
Abstract
The invention discloses a multistage pressure regulating type hemofiltration device, which comprises a filter and is characterized in that: the novel blood pressure control device is characterized in that a filtering mechanism is arranged in the filter, a detecting mechanism is arranged on the right side of the filtering mechanism, a negative pressure collecting mechanism is connected to a right side pipeline of the filtering mechanism, the detecting mechanism is fixedly connected with the filter, the detecting mechanism is connected with a negative pressure collecting mechanism pipeline, the filtering mechanism comprises a blood cavity, the blood cavity is located on the left side of the filter, a filtering membrane is arranged in the middle of the filter, a convection box is arranged on the right side of the filter, the negative pressure collecting mechanism comprises a buffer box, the buffer box is connected with a right side pipeline of the convection box, an upstream pipeline of the buffer box is connected with a blood pump, and an upstream pipeline of the blood pump is connected with a waste liquid box.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a multistage pressure regulating type hemofiltration device.
Background
The blood filtration is to make blood flow through a filter in an extracorporeal circuit through a machine pump or the blood pressure of a patient, filter out a large amount of liquid and solute under the action of filtration overpressure, and supplement electrolyte solution similar to the plasma liquid component at the same time so as to achieve the aim of blood purification.
Disclosure of Invention
The invention aims to provide a multistage pressure regulating type hemofiltration device, which aims to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a multistage pressure regulating formula hemofiltration device, includes the filter, its characterized in that: the inside of filter is provided with the filtration mechanism, the right side of filtration mechanism is provided with detection mechanism, the right side pipeline of filtration mechanism is connected with negative pressure collection mechanism, detection mechanism and filter fixed connection, detection mechanism and negative pressure collection mechanism pipe connection.
According to the technical scheme, the filtering mechanism comprises a blood cavity, the blood cavity is located the left side of the filter, the middle of the filter is provided with a filtering membrane, the right side of the filter is provided with a convection current box, the negative pressure collecting mechanism comprises a buffer box, the buffer box is connected with a right side pipeline of the convection current box, an upstream pipeline of the buffer box is connected with a blood pump, an upstream pipeline of the blood pump is connected with a waste liquid box, the upper end of the blood cavity is connected with a human body artery, and the lower end of the blood cavity is connected with a human body vein.
According to the technical scheme, detection mechanism includes the loose axle, loose axle and filter swing joint, the inside of loose axle is provided with the liquid chamber, the inside fixedly connected with spring of loose axle, the other end fixedly connected with piston of spring, the excircle fixedly connected with stay cord of loose axle, the other end fixedly connected with cleaning ball of stay cord, the top of buffer tank is provided with the taper hole, the lower extreme fixedly connected with extension spring of taper hole, the other end fixedly connected with taper plug of extension spring, the centre of taper plug is provided with the baffle, the baffle divide into lower chamber and upper chamber to the taper plug, the centre of baffle is provided with the through-hole, upper chamber and liquid chamber pipe connection.
According to the technical scheme, one side of the filter is provided with the replacement liquid box, a downstream pipeline of the replacement liquid box is connected with a liquid pump, and the liquid pump is connected with a blood cavity pipeline.
According to the technical scheme, the middle pipeline of the liquid pump and the blood cavity is provided with the cavity, the upper part of the cavity is fixedly connected with the elastic pull rope, the other end of the elastic pull rope is fixedly connected with the flow limiting valve, the inside of the cavity is provided with gas, and the cavity is connected with the lower cavity pipeline.
According to the technical scheme, the right side fixedly connected with switch of filter membrane, the upper end fixedly connected with electrical apparatus box of convection current case, the upper end fixedly connected with torsional spring of electrical apparatus box, torsional spring and switch fixed connection, the inside of convection current case is provided with the motor, the output shaft fixedly connected with pivot of motor, the excircle fixedly connected with elasticity rope of pivot, the other end fixedly connected with lug of elasticity rope, the inboard of loose axle is provided with concave block, the switch is connected with the motor electricity.
According to the technical scheme, the inside of cleaning ball is provided with the air cavity, the outer wall of cleaning ball is provided with multiunit aperture, multiunit the inside fixedly connected with pressure spring of aperture, the inside swing joint of pressure spring has the brush, air cavity and lower chamber pipe connection.
According to the technical scheme, right side fixedly connected with gasbag of electrical apparatus box, gasbag and switch fixed connection, be provided with left passageway and right passageway between human artery and the vein, be provided with the adjustment chamber between left passageway and the right passageway, adjustment chamber and filter fixed connection, the right side of adjustment chamber is provided with the air chamber, the inside fixedly connected with in adjustment chamber returns the spring, the other end fixedly connected with activity stopper of returning the spring, left side passageway and right passageway all with activity stopper swing joint, air chamber and gasbag pipe connection.
According to the technical scheme, the filtering membrane is made of high polymer materials.
According to the technical scheme, the cleaning ball and the hairbrush are made of flexible materials.
Compared with the prior art, the invention has the following beneficial effects: the invention can filter and separate harmful substances in blood by arranging the filtering mechanism, so as to achieve the aim of purifying the blood, and can sense the pressure during the blood filtering at any time by arranging the detecting mechanism, and adjust the negative pressure arranged by the negative pressure collecting mechanism in real time according to the flow, so that the supplementing speed of the supplementing liquid can be adjusted in real time according to the flow of the body fluid and the pressure difference, and the device can automatically clear and wash under the condition that the filtering mechanism is blocked, thereby achieving the aim of intelligent filtering.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the overall front cross-sectional structure of the present invention;
FIG. 3 is a schematic view of the partial structure at A of the present invention;
FIG. 4 is a schematic view of the partial structure of the present invention at B;
FIG. 5 is a schematic view of the partial structure of the present invention at C;
FIG. 6 is a schematic view of the partial structure of the present invention at D;
FIG. 7 is a schematic view of the partial structure at E of the present invention;
In the figure: 1. a filter; 2. a blood chamber; 3. a filtration membrane; 4. a rotating shaft; 5. a pull rope; 6. a cleaning ball; 7. a liquid chamber; 8. a spring; 9. a piston; 10. a bump; 11. a concave block; 12. a tension spring; 13. a movable shaft; 14. a switch; 15. taper holes; 16. a conical plug; 17. a partition plate; 18. a buffer tank; 19. a blood pump; 20. a waste liquid tank; 21. a through hole; 22. a lower cavity; 23. an upper chamber; 24. a torsion spring; 25. an air cavity; 26. a small hole; 27. a pressure spring; 28. a brush; 29. an electrical box; 30. an elastic rope; 31. a replacement liquid tank; 32. a liquid pump; 33. a cavity; 34. a flow limiting valve; 35. an elastic pull rope; 36. a convection box; 37. an air bag; 38. adjusting the cavity; 39. a movable plug; 40. a gas chamber; 41. a left passage; 42. a right passageway; 43. and (5) a return spring.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-7, the present invention provides the following technical solutions: the utility model provides a multistage pressure regulating formula hemofiltration device, includes filter 1, its characterized in that: the inside of the filter 1 is provided with a filtering mechanism, the right side of the filtering mechanism is provided with a detecting mechanism, a right side pipeline of the filtering mechanism is connected with a negative pressure collecting mechanism, the detecting mechanism is fixedly connected with the filter 1, the detecting mechanism is connected with the negative pressure collecting mechanism, harmful substances in blood can be filtered and separated through the filtering mechanism, the aim of purifying the blood is achieved, the detecting mechanism is provided, the pressure of the blood can be sensed at any time, the negative pressure set by the negative pressure collecting mechanism can be adjusted in real time according to the flow, and the supplementing speed of the supplementing liquid can be adjusted in real time according to the pressure because the flow of body fluid is related to the pressure difference, and the blood can be cleaned and washed automatically under the condition that the filtering mechanism is blocked, so that the aim of intelligent filtering is achieved;
The filtering mechanism comprises a blood cavity 2, the blood cavity 2 is positioned at the left side of the filter 1, a filtering membrane 3 is arranged in the middle of the filter 1, a convection box 36 is arranged at the right side of the filter 1, the negative pressure collecting mechanism comprises a buffer box 18, the buffer box 18 is connected with a right side pipeline of the convection box 36, an upstream pipeline of the buffer box 18 is connected with a blood pump 19, an upstream pipeline of the blood pump 19 is connected with a waste liquid box 20, the upper end of the blood cavity 2 is connected with an artery of a human body, the lower end of the blood cavity 2 is connected with a vein of the human body, under the action of the blood pressure of the human body, blood flows out from the artery and enters the blood cavity 2, harmful medium and small molecules and plasma in the blood pass through the filtering membrane 3 and enter the convection box 36 under the action of the blood pump 19 and pass through the buffer box 18, and other parts in the blood enter the vein of the human body through the pipeline at the lower end of the blood cavity 2, so that the purposes of filtering harmful substances and purifying the blood are achieved;
The detection mechanism comprises a movable shaft 13, the movable shaft 13 is movably connected with a filter 1, a liquid cavity 7 is arranged in the movable shaft 13, a spring 8 is fixedly connected in the movable shaft 13, the other end of the spring 8 is fixedly connected with a piston 9, the outer circle of the movable shaft 13 is fixedly connected with a pull rope 5, the other end of the pull rope 5 is fixedly connected with a cleaning ball 6, the top of a buffer box 18 is provided with a taper hole 15, the lower end of the taper hole 15 is fixedly connected with a tension spring 12, the other end of the tension spring 12 is fixedly connected with a taper plug 16, a baffle 17 is arranged in the middle of the taper plug 16, the baffle 17 divides the taper plug 16 into a lower cavity 22 and an upper cavity 23, a through hole 21 is arranged in the middle of the baffle 17, the upper cavity 23 is connected with the liquid cavity 7 in a pipeline, the taper plug 16 is in a half-open state in an initial state, filtered solution flows to the waste liquid box 20 under the action of a blood pump 19, therefore solute in the convection box 36 forms left-right fluid, thereby generating force on the cleaning ball 6, pushing the cleaning ball 6 to drive the liquid cavity 7 to move clockwise together with the movable shaft 13, while the liquid cavity 7 rotates, the piston 9 moves towards the far shaft end due to the centrifugal force, thereby pushing the liquid in the liquid cavity 7 to enter the upper cavity 23, along with the entering of the liquid in the upper cavity 23, the conical plug 16 slowly increases in weight and moves downwards due to the entering of the liquid, thereby reducing the opening amplitude of the conical hole 15, reducing the negative pressure, reducing the speed of convection of solute in the convection box 36, reducing the rotating speed of the liquid cavity 7, reducing the liquid entering the upper cavity 23, slowly moving upwards due to the centrifugal force, reducing the opening amplitude of the conical hole 15, increasing the negative pressure, maintaining the rotating speed of the liquid cavity 7 and the generated negative pressure in a stable dynamic balance state, therefore, when the blood pressure of the human body is reduced, the rotating speed of the liquid cavity 7 is reduced, so that the negative pressure is increased, and when the blood pressure of the human body is increased, the rotating speed of the liquid cavity 7 is increased, so that the negative pressure is reduced, and the pressure difference can be automatically regulated through the interaction of the detection mechanism and the negative pressure collection mechanism, so that the pressure difference is kept in a stable state, and the guarantee is provided for the filtration of blood;
A replacement liquid tank 31 is arranged on one side of the filter 1, a liquid pump 32 is connected to a downstream pipeline of the replacement liquid tank 31, the liquid pump 32 is connected with a blood cavity 2 pipeline, and the replacement liquid in the replacement liquid tank 31 is pumped into the blood cavity 2 through the liquid pump 32 while the solution is discharged by the filter mechanism, so that the purpose of supplementing blood is achieved;
The middle pipeline between the liquid pump 32 and the blood chamber 2 is provided with a cavity 33, the upper part of the cavity 33 is fixedly connected with an elastic pull rope 35, the other end of the elastic pull rope 35 is fixedly connected with a flow limiting valve 34, the inside of the cavity 33 is provided with gas, the cavity 33 is connected with a lower chamber 22 pipeline, the pressure difference is kept constant under normal conditions, the flow rate of solution discharged by the filtering mechanism is kept constant, so that the replenishment of replacement liquid is kept at a certain speed, when the blood pressure of a human body is reduced, the solution entering the convection box 36 is also less, the rotating speed of the liquid chamber 7 is reduced, the liquid entering the upper chamber 23 in the interior is reduced, so that the pressure of the lower chamber 22 is reduced, the gas in the cavity 33 enters the lower chamber 22 through the pipeline, the flow limiting valve 34 moves upwards, the pipeline is narrowed, the replacement liquid delivered to the blood chamber 2 is reduced, so as to adapt to less solution loss, when the blood pressure of the human body is increased, the rotating speed of the solution entering the convection box 36 is increased, the rotating speed of the liquid chamber 7 is increased, the liquid entering the upper chamber 23 is increased, so that the pressure of the lower chamber 22 is increased, the pressure of the liquid can be delivered to the lower chamber 22 through the pipeline is more stable, and the replacement liquid can be delivered to the lower chamber through the pipeline, the change in real time, the purpose of changing the flow loss is achieved, and the replacement of the blood can be adjusted, the flow through the pipeline is more stable, and the change, and the flow can be adjusted;
The right side of the filter membrane 3 is fixedly connected with the switch 14, the upper end of the convection box 36 is fixedly connected with the electric box 29, the upper end of the electric box 29 is fixedly connected with the torsion spring 24, the torsion spring 24 is fixedly connected with the switch 14, a motor is arranged in the convection box 36, the output shaft of the motor is fixedly connected with the rotating shaft 4, the outer circle of the rotating shaft 4 is fixedly connected with the elastic rope 30, the other end of the elastic rope 30 is fixedly connected with the bump 10, the inner side of the movable shaft 13 is provided with the concave block 11, the switch 14 is electrically connected with the motor, as the blood filtration is carried out, some macromolecules in the blood can adhere to the filter membrane 3 and block the filtration of the blood, as the macromolecules slowly accumulate, the liquid in the convection box 36 is absorbed by the increased negative pressure, the liquid cavity 7 stops moving due to the disappearance of the pressure difference, but under the action of the pressure difference on the left side and the right side of the filter membrane 3, the filter membrane 3 is extruded, the switch 14 is pushed to be closed at the same time, the motor is powered on, the rotating shaft 4 is driven to rotate anticlockwise, as the rotation of the 4 is enabled, the elastic rope 30 is connected with the motor, the concave block 11 is driven by the bump 11 to move towards the shaft end, the maximum value of the rotating shaft 7 is also driven by the rotating shaft 7, and the maximum value is reached to the filter membrane is also to be more rapidly filtered by the rotation of the filter membrane 3, and the maximum value is reached, and the suction effect of the filter membrane is reached, and the filter membrane is more rapid and can be more rapidly and the filter membrane is more rapidly filtered;
The inside of the cleaning ball 6 is provided with an air cavity 25, the outer wall of the cleaning ball 6 is provided with a plurality of groups of small holes 26, the inside of the plurality of groups of small holes 26 is fixedly connected with a pressure spring 27, the inside of the pressure spring 27 is movably connected with a hairbrush 28, the air cavity 25 is connected with a pipeline of the lower cavity 22, when the filtering membrane 3 is blocked, the centrifugal force born by the cleaning ball 6 is larger because the rotating speed of the liquid cavity 7 is higher, the rotating diameter of the cleaning ball reaches the maximum, when the cleaning ball 6 rotates to the farthest distance, the cleaning ball can collide with the filtering membrane 3, so that the filtering membrane 3 generates intermittent vibration to shake the macromolecules attached to the cleaning ball into blood, thereby achieving the cleaning effect on the filtering membrane 3, and simultaneously, more liquid in the cleaning ball enters the upper cavity 23 because the rotating speed of the liquid cavity 7 is higher, so that the gas in the lower cavity 22 enters the air cavity 25 of the cleaning ball 6, and the gas in the entering the air cavity 25 ejects the hairbrush 28 out of the small holes 26, thereby the cleaning ball 6 can perform double cleaning on the inner surface of the filtering membrane 3 while vibrating the filtering membrane 3;
The right side of the electric box 29 is fixedly connected with an air bag 37, the air bag 37 is fixedly connected with the switch 14, a left passage 41 and a right passage 42 are arranged between arteries and veins of a human body, an adjusting cavity 38 is arranged between the left passage 41 and the right passage 42, the adjusting cavity 38 is fixedly connected with the filter 1, an air chamber 40 is arranged on the right side of the adjusting cavity 38, a movable plug 39 is arranged in the adjusting cavity 38, the left passage 41 and the right passage 42 are both movably connected with the movable plug 39, the air chamber 40 is connected with an air bag 37 pipeline, when the filtering mechanism works normally, blood circulates through the right passage 42, when the filtering membrane 3 is blocked, the air bag 37 is extruded by rightward movement of the switch 14, so that liquid in the air bag 37 enters the air chamber 40 and pushes the movable plug 39 to move rightward, the right passage 42 is closed at the moment, the left passage 41 is opened, and blood circulation is realized through the left passage 41, meanwhile, when the filtration membrane 3 is blocked, in the beginning state, because the liquid cavity 7 stops rotating, the opening amplitude of the taper hole 15 is maximum, so that the gas in the cavity 33 completely enters the lower cavity 22, at the moment, the flow limiting valve 34 closes the replacement liquid conveying channel, when the liquid cavity 7 rotates at high speed under the drive of the motor, the gas in the lower cavity 22 completely enters the cavity 33 under the extrusion of the liquid, and opens the flow limiting valve 34 to the greatest extent, at the moment, a large amount of replacement liquid enters the blood cavity 2, and plays a certain flushing role on the filtration membrane 3, after the blockage of the filtration membrane 3 is removed slowly, the extrusion force suffered by the filtration membrane 3 also disappears, the switch 14 is opened, the extrusion of the air bag 37 is closed, so that the liquid cavity 7 stops moving, the movable plug 39 moves rightwards under the drive of the return spring 43, and the right passage 42 is opened, with the blood passing through the right passage 42, the whole filter device resumes normal operation and slowly reaches dynamic balance by the automatic regulation function;
The filtering membrane 3 is made of high polymer materials, and has better strength and toughness so as to adapt to various mutation conditions;
The cleaning ball 6 and the brush 28 are made of flexible materials, so that the filter membrane 3 is prevented from being broken during collision and washing.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A multistage pressure regulating formula hemofiltration device, includes filter (1), its characterized in that: the inside of the filter (1) is provided with a filtering mechanism, the right side of the filtering mechanism is provided with a detection mechanism, a right side pipeline of the filtering mechanism is connected with a negative pressure collecting mechanism, the detection mechanism is fixedly connected with the filter (1), and the detection mechanism is connected with the negative pressure collecting mechanism in a pipeline manner;
a filtering membrane (3) is arranged in the middle of the filter (1);
The negative pressure collecting mechanism comprises a buffer box (18), a taper hole (15) is formed in the top of the buffer box (18), a tension spring (12) is fixedly connected to the lower end of the taper hole (15), a taper plug (16) is fixedly connected to the other end of the tension spring (12), a partition plate (17) is arranged in the middle of the taper plug (16), and the partition plate (17) divides the taper plug (16) into a lower cavity (22) and an upper cavity (23);
The detection mechanism comprises a movable shaft (13), the movable shaft (13) is movably connected with the filter (1), a liquid cavity (7) is formed in the movable shaft (13), a spring (8) is fixedly connected to the movable shaft (13), a piston (9) is fixedly connected to the other end of the spring (8), a pull rope (5) is fixedly connected to the outer circle of the movable shaft (13), a cleaning ball (6) is fixedly connected to the other end of the pull rope (5), a through hole (21) is formed in the middle of the partition plate (17), and the upper cavity (23) is connected with the liquid cavity (7) in a pipeline mode.
The inside of cleaning ball (6) is provided with air cavity (25), the outer wall of cleaning ball (6) is provided with multiunit aperture (26), multiunit the inside fixedly connected with pressure spring (27) of aperture (26), the inside swing joint of pressure spring (27) has brush (28), air cavity (25) and lower chamber (22) pipe connection.
2. The multi-stage pressure regulating hemofiltration device of claim 1 wherein: the utility model provides a blood chamber (2) is included to filtration mechanism, blood chamber (2) are located the left side of filter (1), the right side of filter (1) is provided with convection current case (36), right side pipe connection of buffer tank (18) and convection current case (36), the upstream pipe connection of buffer tank (18) has blood pump (19), the upstream pipe connection of blood pump (19) has waste liquid case (20), the upper end and the human artery connection of blood chamber (2), the lower extreme and the human vein connection of blood chamber (2).
3. A multi-stage pressure regulating hemofiltration device of claim 2 wherein: one side of the filter (1) is provided with a replacement liquid box (31), a downstream pipeline of the replacement liquid box (31) is connected with a liquid pump (32), and the liquid pump (32) is connected with a blood cavity (2) pipeline.
4. A multi-stage pressure regulating hemofiltration device of claim 3 wherein: the utility model discloses a blood pump, including blood chamber (2), liquid pump (32), cavity (33) are provided with on the middle pipeline of blood chamber (2), the upper portion fixedly connected with elasticity stay cord (35) of cavity (33), the other end fixedly connected with current-limiting valve (34) of elasticity stay cord (35), the inside of cavity (33) is provided with gas, cavity (33) and lower chamber (22) pipe connection.
5. The multi-stage pressure regulating hemofiltration device of claim 4 wherein: the right side fixedly connected with switch (14) of filtration membrane (3), the upper end fixedly connected with electrical apparatus box (29) of convection current case (36), the upper end fixedly connected with torsional spring (24) of electrical apparatus box (29), torsional spring (24) and switch (14) fixed connection, the inside of convection current case (36) is provided with the motor, the output shaft fixedly connected with pivot (4) of motor, the excircle fixedly connected with elasticity rope (30) of pivot (4), the other end fixedly connected with lug (10) of elasticity rope (30), the inboard of loose axle (13) is provided with concave block (11), switch (14) are connected with the motor electricity.
6. The multi-stage pressure regulating hemofiltration device of claim 5 wherein: the utility model discloses an electric appliance box, including electric appliance box (29), right side fixedly connected with gasbag (37), gasbag (37) and switch (14) fixed connection, be provided with left passageway (41) and right passageway (42) between human artery and the vein, be provided with adjustment chamber (38) between left passageway (41) and right passageway (42), adjustment chamber (38) and filter (1) fixed connection, the right side of adjustment chamber (38) is provided with air chamber (40), the inside fixedly connected with of adjustment chamber (38) is replied spring (43), the other end fixedly connected with activity stopper (39) of replying spring (43), left side passageway (41) and right passageway (42) all with activity stopper (39) swing joint, air chamber (40) and gasbag (37) pipe connection.
7. The multi-stage pressure regulating hemofiltration device of claim 6 wherein: the filtering membrane (3) is made of high polymer materials.
8. The multi-stage pressure regulating hemofiltration device of claim 7 wherein: the cleaning ball (6) and the brush (28) are made of flexible materials.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110950629.2A CN113694277B (en) | 2021-08-18 | 2021-08-18 | Multistage pressure regulating formula hemofiltration device |
| CN202410252580.7A CN118252992A (en) | 2021-08-18 | 2021-08-18 | Multistage pressure regulating type blood filtering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110950629.2A CN113694277B (en) | 2021-08-18 | 2021-08-18 | Multistage pressure regulating formula hemofiltration device |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410252580.7A Division CN118252992A (en) | 2021-08-18 | 2021-08-18 | Multistage pressure regulating type blood filtering device |
Publications (2)
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| JP2001059579A (en) * | 1999-08-20 | 2001-03-06 | Maruyama Mfg Co Ltd | Pressure regulating valve |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN113694277A (en) | 2021-11-26 |
| CN118252992A (en) | 2024-06-28 |
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