CN110966178B - Pressure pump control method - Google Patents
Pressure pump control method Download PDFInfo
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- CN110966178B CN110966178B CN201911375023.XA CN201911375023A CN110966178B CN 110966178 B CN110966178 B CN 110966178B CN 201911375023 A CN201911375023 A CN 201911375023A CN 110966178 B CN110966178 B CN 110966178B
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- piston
- pressure
- pressure pump
- liquid
- driving motor
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- 238000000034 method Methods 0.000 title claims abstract description 45
- 239000007788 liquid Substances 0.000 claims abstract description 155
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 117
- 230000008859 change Effects 0.000 claims abstract description 12
- 230000008602 contraction Effects 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 claims description 45
- 230000033001 locomotion Effects 0.000 claims description 30
- 230000007246 mechanism Effects 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 238000001802 infusion Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 description 19
- 238000010586 diagram Methods 0.000 description 6
- 238000007599 discharging Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
-
- 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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/14212—Pumping with an aspiration and an expulsion action
- A61M5/14216—Reciprocating piston type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/10—Other safety measures
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention relates to the technical field of medical equipment, in particular to a pressure pump control method. A pump head comprises a pump body, a piston rod and an expandable first pressure stabilizing tube. The piston and the piston rod are both positioned in the inner cavity of the pump body, the piston is connected with the piston rod and is attached to the wall of the inner cavity, and the piston rod is used for driving the piston to reciprocate along the preset direction relative to the inner cavity. The piston divides the inner cavity into a first chamber and a second chamber; the pump body is provided with a first liquid outlet communicated with the first cavity and a second liquid outlet communicated with the second cavity. The first liquid outlet and the second liquid outlet are both communicated with one end of a first pressure stabilizing tube, and the other end of the first pressure stabilizing tube is communicated with a surgical instrument; the first pressure regulator is used for switching between an expansion state and a contraction state so as to compensate the liquid pressure in the first pressure regulator and reduce the flow change when the first pressure regulator continuously conveys liquid to the surgical instrument. Which can ensure smooth infusion of liquid.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a pressure pump control method.
Background
In the interventional medical treatment process, the requirement on the stable infusion precision of the liquid of the pressure pump is higher, but the technical problem that the stable flow rate of the liquid is ensured in the piston steering process is generally realized by adopting an electronic control mode in the prior art, the defect of the mode is that whether the stable flow rate of the liquid can be realized by depending on the accurate control of electronic equipment or not is high in the requirement on the electronic control precision, so that the requirements on the precision of a circuit and the stability of electrical equipment are higher.
Disclosure of Invention
The invention aims to provide a pressure pump control method which can reduce the requirement on the control precision of electrical equipment and reduce the cost of the electrical equipment on the basis of ensuring stable liquid infusion.
Embodiments of the invention may be implemented as follows:
in a first aspect, an embodiment provides a pump head comprising a pump body, a piston rod, and an expandable first pressure stabilizing tube;
The pump body is provided with an inner cavity, the piston and the piston rod are both positioned in the inner cavity, the piston is connected with the piston rod, the piston is attached to the wall of the inner cavity, and the piston rod is used for driving the piston to reciprocate along a preset direction relative to the inner cavity;
The piston divides the inner cavity into a first chamber and a second chamber; the pump body is provided with a first liquid outlet communicated with the first cavity and a second liquid outlet communicated with the second cavity;
The first liquid outlet and the second liquid outlet are both communicated with one end of a first pressure stabilizing tube, and the other end of the first pressure stabilizing tube is communicated with a surgical instrument; the first pressure stabilizing tube is used for switching between an expansion state and a contraction state so as to compensate the liquid pressure in the first pressure stabilizing tube and reduce the flow change when the first pressure stabilizing tube continuously conveys liquid to the surgical instrument.
In an alternative embodiment, the pump head further comprises a second pressure stabilizing tube; the pump body is also provided with a first liquid inlet which is correspondingly communicated with the first cavity and a second liquid inlet which is correspondingly communicated with the second cavity;
The first liquid inlet and the second liquid inlet are both communicated with one end of the second pressure stabilizing tube, the other end of the second pressure stabilizing tube is communicated with the liquid tank, and the second pressure stabilizing tube is used for switching between an expansion state and a contraction state so as to compensate the liquid pressure in the second pressure stabilizing tube and reduce the flow change of the second pressure stabilizing tube when the second pressure stabilizing tube continuously conveys liquid to the first liquid inlet and the second liquid inlet.
In an alternative embodiment, the first voltage stabilizing tube and the second voltage stabilizing tube can be made of any one of an elastic plastic hose, a braided hose or an elastic net tube.
In an alternative embodiment, the pump body further comprises a first flow channel and a second flow channel;
The first flow passage is simultaneously communicated with the first liquid outlet and the second liquid outlet, and the outlet of the first flow passage is communicated with the first pressure stabilizing pipe;
The second flow passage is simultaneously communicated with the first liquid inlet and the second liquid inlet, and an inlet of the second flow passage is communicated with the second pressure stabilizing tube.
In an alternative embodiment, the outlet of the first flow channel and the inlet of the second flow channel are provided with pipe joints;
the pipe joint at the outlet of the first runner is used for being detachably connected with the first pressure stabilizing pipe;
the pipe joint at the inlet of the second flow passage is used for being detachably connected with the second pressure stabilizing pipe.
In a second aspect, an embodiment provides a pressure pump, including a base, a driving mechanism, and a pump head described above;
The pump head and the driving mechanism are connected with the base, the driving mechanism comprises a driving motor and a sliding block in transmission connection with an output shaft of the driving motor, and the sliding block is in transmission connection with the piston rod, so that the driving motor can drive the piston to reciprocate along a preset direction.
In an alternative embodiment, the pressure pump further comprises a clamping structure;
the clamping structure comprises a clamping block connected with the sliding block and a clamping part connected with the piston rod;
The clamping part is used for being clamped with the clamping block so as to limit the piston rod to be separated from the sliding block along the preset direction.
In an alternative embodiment, the clamping block is provided with a clamping groove clamped with the clamping part, and the extending direction of the groove body of the clamping groove is perpendicular to the preset direction.
In an alternative embodiment, the pressure pump further comprises a push-pull force sensor and a controller, wherein the push-pull force sensor is arranged at the joint of the clamping block and the sliding block and is used for detecting the push-pull force exerted by the sliding block on the piston rod;
The push-pull force sensor and the driving motor are electrically connected with the controller, and the controller is used for receiving push-pull force signals so as to control the pressure pump to stop running after the push-pull force exceeds a preset push-pull force range.
In an alternative embodiment, the pressure pump further comprises a controller and a current sensor arranged on the circuit of the pressure pump, the current sensor being used for detecting the current on the circuit of the pressure pump;
the current sensor and the driving motor are electrically connected with the controller, and the controller is used for receiving current signals so as to control the pressure pump to stop running after the current exceeds a preset current range.
In an alternative embodiment, the pressure pump further comprises a limiting structure and a controller, wherein the limiting structure comprises a positioning block and two position sensors;
the two position sensors are connected with the base and are arranged at intervals along a preset direction to form a detection area; the positioning block is connected with the sliding block and is positioned in the detection area;
The driving motor and the two position sensors are electrically connected with the controller, and the controller is used for receiving the position signals so as to control the driving motor to rotate reversely and drive the positioning block to move towards the other end of the detection area after the positioning block moves to one end of the detection area.
In a third aspect, an embodiment provides a method for controlling a pressure pump, where the method includes the following steps:
controlling a driving motor to drive a piston to reciprocate in a pump head at a first preset speed so as to exhaust the pressure pump until the liquid output by the first pressure stabilizing tube does not contain bubbles;
and controlling the driving motor to drive the piston to reciprocate in the pump head at a second preset speed along a preset direction, so that the first voltage stabilizing tube continuously outputs the pressurized liquid.
In an alternative embodiment, the movement of the piston in the same direction in the pump head is a uniform movement.
In an alternative embodiment, the reciprocating movement of the piston in the pump head comprises a first stroke and a second stroke;
The reduced volume of the first chamber is the same as the increased volume of the second chamber when the piston moves along the first stroke; the increased volume of the first chamber is the same as the decreased volume of the second chamber when the piston moves along the second stroke;
when the piston moves to the end of the first stroke, the volume of the first chamber is the first volume; when the piston moves to the end of the second stroke, the volume of the second chamber is the second volume; the first volume is the same as the second volume.
In an alternative embodiment, controlling the driving motor to drive the piston to reciprocate in the pump head at a first preset speed so as to exhaust the pressure pump until the liquid output by the first pressure stabilizing tube does not contain bubbles comprises:
Controlling a driving motor to drive a piston to move at a first preset speed along a preset direction, and driving a positioning block to synchronously move in a detection area;
when one position sensor in the detection area detects that the positioning block moves to one end of the detection area, the driving motor is controlled to drive the piston and the positioning block to move along the direction opposite to the preset direction;
When the other position sensor in the detection area detects that the positioning block moves to the other end of the detection area, the driving motor is controlled to drive the piston and the positioning block to move along the preset direction;
Until the liquid output by the first pressure stabilizing tube does not contain bubbles.
In an alternative embodiment, controlling the driving motor to drive the piston to reciprocate in the pump head along the preset direction at a second preset speed, so that the first pressure stabilizing tube continuously outputs the pressurized liquid includes:
Controlling a driving motor to drive a piston to move along a preset direction at a second preset speed, and driving a positioning block to synchronously move in a detection area;
when one position sensor in the detection area detects that the positioning block moves to one end of the detection area, the driving motor is controlled to drive the piston and the positioning block to move along the direction opposite to the preset direction;
When the other position sensor in the detection area detects that the positioning block moves to the other end of the detection area, the driving motor is controlled to drive the piston and the positioning block to move along the preset direction.
In an alternative embodiment, when the driving motor drives the piston to move relative to the pump head, the pressure pump is controlled to stop working after the push-pull force sensor detects that the push-pull force applied to the piston rod exceeds a preset push-pull force range.
In an alternative embodiment, the pressure pump is controlled to stop working when the current sensor detects that the current in the driving motor exceeds a preset current range.
The beneficial effects of the embodiment of the invention include:
The pressure pump is connected with a first liquid outlet and a second liquid outlet on the pump body through a first pressure stabilizing pipe, so that in the liquid discharging process of the first liquid outlet and the second liquid outlet, liquid in the first pressure stabilizing pipe has certain pressure through the expansion characteristic of the first pressure stabilizing pipe in the non-reversing movement process of the piston; in the process of reversing the piston, as the pressure in the pressure pump is reduced, the liquid discharge amount is reduced, and the first pressure stabilizing tube is switched between an expansion state and a contraction state, so that the tube body of the first pressure stabilizing tube is contracted or increased, and a certain pressure is applied to liquid in the first pressure stabilizing tube to compensate the pressure and flow loss of the liquid in the first pressure stabilizing tube, thereby reducing the flow change of the liquid in the first pressure stabilizing tube in the process of reversing the piston, and ensuring the stability of liquid output.
In addition, compared with the mode of improving the precision of the electronic equipment and the stability of the electrical equipment in the prior art, the scheme can effectively reduce the requirement on the control precision of the electrical equipment, so that the cost of the electrical equipment can be reduced on the basis of ensuring stable liquid infusion.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a pressure pump according to an embodiment of the present invention at a first view angle;
FIG. 2 is a schematic diagram of a pressure pump according to an embodiment of the present invention at a second view angle;
FIG. 3 is a schematic diagram of a pressure pump according to an embodiment of the present invention at a third view;
FIG. 4 is a schematic diagram of a pump head according to an embodiment of the present invention;
FIG. 5 is a schematic diagram illustrating a configuration of a first voltage regulator tube according to an embodiment of the present invention;
FIG. 6 is a cross-sectional view of a pump head at a first perspective in accordance with an embodiment of the present invention;
FIG. 7 is an enlarged view of a portion of FIG. 6 at VII;
FIG. 8 is a cross-sectional view of a pump head in accordance with an embodiment of the present invention at a second perspective;
FIG. 9 is a schematic structural view of a clamping structure according to an embodiment of the present invention;
FIG. 10 is a schematic diagram of a card slot according to an embodiment of the invention;
fig. 11 is a partial enlarged view at XI in fig. 3.
Icon: 100-pump head; 110-a pump body; 120-piston; 130-a piston rod; 140-a first voltage stabilizing tube; 111-lumen; 112-a first chamber; 113-a second chamber; 114-a first drain; 115-a second drain; 150-a second voltage stabilizing tube; 116-a first liquid inlet; 117-a second liquid inlet; 118-a first flow channel; 119-a second flow channel; 160-pipe joint; 200-a pressure pump; 210-a base; 220-a drive mechanism; 221-a drive motor; 222-a slider; 230-clamping structure; 231-clamping blocks; 232-clamping part; 233-a clamping groove; 240-push-pull force sensor; 250-controller; 260-a current sensor; 270-a limiting structure; 271-positioning blocks; 272—a position sensor; 273-detection zone.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus it should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
Referring to fig. 1 to 8, fig. 1 to 3 show the structure of a pressure pump according to an embodiment of the present invention, and fig. 4 to 8 show the structure of a pump head according to an embodiment of the present invention. In order to further illustrate the structure of the pressure pump, fig. 2 and 3 show the structure of the pressure pump with a part of the housing hidden in fig. 1.
The present embodiment provides a pressure pump 200, which includes a base 210, a driving mechanism 220, and a pump head 100. The pressure pump 200 can effectively reduce the requirement on the control precision of the electrical equipment, so that the cost of the electrical equipment can be reduced on the basis of ensuring the stable liquid infusion.
Referring to fig. 1-3, the pump head 100 and the driving mechanism 220 are both connected to the base 210, and the driving mechanism 220 includes a driving motor 221 and a slider 222 in transmission connection with an output shaft of the driving motor 221. Referring to fig. 4 and 5, the pump head 100 includes a pump body 110, a piston 120, a piston rod 130, and an expandable first pressure stabilizing tube 140.
Specifically, referring to fig. 6 and 7, the pump body 110 includes an inner cavity 111, the piston 120 and the piston rod 130 are both positioned in the inner cavity 111, the piston 120 is connected to the piston rod 130, and the piston 120 is attached to a wall of the inner cavity 111. The sliding block 222 is in transmission connection with the piston rod 130, so that the driving motor 221 drives the piston rod 130 to move, and further drives the piston 120 to reciprocate along a preset direction relative to the inner cavity 111.
The axial direction of the piston rod 130 coincides with the preset direction.
The piston 120 in the inner cavity 111 can divide the inner cavity 111 into a first chamber 112 and a second chamber 113, and the pump body 110 is provided with a first liquid outlet 114 corresponding to the first chamber 112 and a second liquid outlet 115 corresponding to the second chamber 113. During normal operation of the pressure pump 200, the first chamber 112 and the second chamber 113 are used for storing liquid, and the volumes of the first chamber 112 and the second chamber 113 are changed by the movement of the piston 120 relative to the pump head 100, so that the first chamber 112 and the second chamber 113 can be respectively discharged from the first liquid outlet 114 and the second liquid outlet 115 after being pressurized by the piston 120.
It should be noted that, since the pump head 100 includes the first chamber 112 and the second chamber 113, the first chamber 112 and the second chamber 113 can be switched between the liquid-feeding state and the liquid-discharging state along with the relative movement of the piston 120 during the operation of the pressure pump 200, and when the first chamber 112 is in the liquid-discharging state, the second chamber 113 is in the liquid-feeding state, and when the first chamber 112 is in the liquid-feeding state, the second chamber 113 is in the liquid-discharging state. Thereby, the pressure pump 200 is enabled to continuously output the pressurized liquid.
Further, the first drain port 114 and the second drain port 115 are both communicated with one end of the first pressure stabilizing tube 140, and the other end of the first pressure stabilizing tube 140 is used for communicating with a surgical instrument. The first regulator tube 140 is configured to switch between an expanded state and a contracted state to compensate for the fluid pressure within the first regulator tube 140 and to reduce the flow rate variation of the first regulator tube 140 when continuously delivering fluid to the surgical instrument.
Because the first voltage stabilizing tube 140 has the characteristic of being expandable, the first voltage stabilizing tube 140 can be converted from an expansion state to a contraction state, or from the contraction state to the expansion state, and in the process of converting the state, the first voltage stabilizing tube 140 can compensate the pressure of the liquid continuously conveyed by the first voltage stabilizing tube 140 to the surgical instrument, so that the liquid pressure in the first voltage stabilizing tube 140 can be stabilized, and further, the flow change when the first voltage stabilizing tube 140 outputs the liquid can be reduced, and the continuous and stable output liquid of the pressure pump 200 can be ensured.
The working principle of the pressure pump 200 is:
The pressure pump 200 includes a base 210, a drive mechanism 220, and a pump head 100. The piston 120 and the piston rod 130 are both positioned within the interior cavity 111 of the pump head 100, with the piston 120 being connected to the piston rod 130, the piston 120 being in registry with the wall of the interior cavity 111. The slider 222 is in driving connection with the piston rod 130, so that the driving motor 221 drives the piston rod 130 to move, and further drives the piston 120 to reciprocate along a preset direction relative to the inner cavity 111, and pressurizes the liquid in the inner cavity 111 through the movement of the piston 120 in the inner cavity 111.
In addition, the piston 120 disposed in the inner cavity 111 may divide the inner cavity 111 into a first chamber 112 and a second chamber 113, the pump body 110 is provided with a first liquid outlet 114 corresponding to the first chamber 112 and a second liquid outlet 115 corresponding to the second chamber 113, the first liquid outlet 114 and the second liquid outlet 115 are both communicated with one end of the first pressure stabilizing tube 140, and the other end of the first pressure stabilizing tube 140 is used for communicating with a surgical instrument.
During normal operation of the pressure pump 200, the volumes of the first chamber 112 and the second chamber 113 are changed by the relative movement of the piston 120 in the inner chamber 111, so that the first chamber 112 and the second chamber 113 can be discharged from the first liquid discharge port 114 and the second liquid discharge port 115, respectively, after being pressurized by the piston 120. The liquid discharged through the first liquid discharge port 114 and the second liquid discharge port 115 enters the first pressure stabilizing tube 140. By the self-expansibility of the first pressure stabilizing tube 140, the liquid in the first pressure stabilizing tube 140 can have a certain pressure by the expansion of the first pressure stabilizing tube 140 in the non-reversing movement process of the piston 120; in the process of reversing the piston 120, as the pressure in the pressure pump 200 is reduced, the liquid discharge amount is reduced, and the first pressure stabilizing tube 140 itself is switched from the expansion state to the contraction state, so that the tube body of the first pressure stabilizing tube 140 is contracted, and a certain pressure is applied to the liquid in the first pressure stabilizing tube 140 to compensate the pressure and flow loss of the liquid in the first pressure stabilizing tube 140, thereby reducing the flow change of the liquid in the first pressure stabilizing tube 140 in the process of reversing the piston 120, and ensuring the stability of the liquid output.
Further, referring to fig. 4 and 5, in the present embodiment, in order to ensure that the pressurizing and draining processes of the liquid in the pressure pump 200 can be continued during the operation of the pressure pump 200, the pump head 100 further includes a second pressure stabilizing tube 150 for injecting the liquid into the first chamber 112 and the second chamber 113.
When the second pressure stabilizing tube 150 is connected with the pump body 110, a first liquid inlet 116 which is correspondingly communicated with the first chamber 112 and a second liquid inlet 117 which is correspondingly communicated with the second chamber 113 can be arranged on the pump body 110; and the first liquid inlet 116 and the second liquid inlet 117 are both communicated with one end of the second pressure stabilizing tube 150, and the other end of the second pressure stabilizing tube 150 is communicated with the liquid tank.
The second voltage stabilizing tube 150 is the same as the first voltage stabilizing tube 140 in operation principle, and the second voltage stabilizing tube 150 is used for compensating the pressure of the second voltage stabilizing tube 150 continuously delivering the liquid to the first liquid inlet 116 and the second liquid inlet 117 through the self-expandable characteristic when the second voltage stabilizing tube 150 is switched from the expanded state to the contracted state, so that the flow rate change of the liquid delivered to the first chamber 112 or the second chamber 113 by the second voltage stabilizing tube 150 can be reduced, and the flow rate change between the liquid inlet state of the first chamber 112 and the liquid inlet state of the second chamber 113 in the operation process of the pressure pump 200 is reduced, so that the operation stability of the pressure pump 200 is improved.
In summary, when the first voltage stabilizing tube 140 and the second voltage stabilizing tube 150 are provided, the first voltage stabilizing tube 140 and the second voltage stabilizing tube 150 can be made of any one of elastic plastic hose, braided hose or elastic net tube. And according to the actual use requirement, the first pressure stabilizing tube 140 and the second pressure stabilizing tube 150 can be made of elastic plastic hoses with different expansion coefficients, so as to meet the use requirement under the condition of different liquid outlet flow requirements, and further enlarge the application range of the pressure pump 200.
Further, referring to fig. 8 in combination with fig. 4, when the first pressure stabilizing tube 140 and the second pressure stabilizing tube 150 are connected to the pump body 110, the first pressure stabilizing tube 140 needs to be correspondingly connected to the first liquid outlet 114 and the second liquid outlet 115, and the second pressure stabilizing tube 150 needs to be correspondingly connected to the first liquid inlet 116 and the second liquid inlet 117, i.e. one ends of the first pressure stabilizing tube 140 and the second pressure stabilizing tube 150, which are respectively connected to the two connecting ports, need to be correspondingly connected to the two connecting ports, so that the connecting difficulty of the first pressure stabilizing tube 140 and the second pressure stabilizing tube 150 is reduced, and the first flow channel 118 and the second flow channel 119 are arranged on the pump body 110.
The first flow channel 118 is simultaneously communicated with the first liquid outlet 114 and the second liquid outlet 115, and the first liquid outlet 114 and the second liquid outlet 115 are both used for discharging pressurized liquid, so that one end of the first flow channel 118, which is communicated with the first liquid outlet 114 and the second liquid outlet 115, is an inlet of the first flow channel 118, and an outlet of the first flow channel 118 is communicated with the first pressure stabilizing tube 140, so that the pressurized liquid discharged from the first liquid outlet 114 and the second liquid outlet 115 can be converged through the first flow channel 118, and the installation difficulty of the first pressure stabilizing tube 140 is reduced.
Similarly, the second flow channel 119 is simultaneously communicated with the first liquid inlet 116 and the second liquid inlet 117, and the first liquid inlet 116 and the second liquid inlet 117 are both used for injecting liquid, so that one end of the second flow channel 119, which is communicated with the first liquid inlet 116 and the second liquid inlet 117, is an outlet of the second flow channel 119, and an inlet of the second flow channel 119 is communicated with the second pressure stabilizing tube 150, so that the liquid entering the first liquid inlet 116 and the second liquid inlet 117 can be converged through the second flow channel 119, and the installation difficulty of the second pressure stabilizing tube 150 is reduced.
Further, since the first and second pressure stabilizing tubes 140 and 150 having different expansion coefficients may be used under different use conditions on the basis of the first and second flow channels 118 and 119, the first and second pressure stabilizing tubes 140 and 150 need to be replaced under different use conditions, thereby facilitating replacement of the first and second pressure stabilizing tubes 140 and 150.
The outlet of the first flow channel 118 is provided with a pipe joint 160, and the pipe joint 160 at the outlet of the first flow channel 118 is used for being detachably connected with the first voltage stabilizing pipe 140; meanwhile, a pipe joint 160 is also provided at the inlet of the second flow passage 119, and the pipe joint 160 at the inlet of the second flow passage 119 is used for detachably connecting with the second regulator pipe 150. By detachably connecting the first and second regulator tubes 140 and 150 to the pump body 110, the steps of connecting the first and second regulator tubes 140 and 150 to the pump body 110 can be simplified, and the mounting efficiency of the first and second regulator tubes 140 and 150 can be improved.
Referring to fig. 3, 9 and 10, fig. 9 and 10 show the structure of the clamping structure according to the embodiment of the invention.
In the working process of the pressure pump 200, the piston 120 moves in the inner cavity 111 under the driving action of the sliding block 222, so that when the sliding block 222 drives the piston 120 to move, the connection stability of the sliding rail and the piston rod 130 needs to be improved to ensure the stability of the movement, and the pressure pump 200 further comprises a clamping structure 230, wherein the clamping effect can be formed at the connection part of the sliding block 222 and the piston rod 130 through the clamping structure 230, and further the transmission effect between the piston rod 130 and the sliding block 222 can be prevented from disappearing in the moving process.
Specifically, when the clamping structure 230 is provided, in this embodiment, the clamping structure 230 may include a clamping block 231 connected to the slider 222, and a clamping portion 232 connected to the piston rod 130; the clamping portion 232 is configured to be clamped with the clamping block 231, so as to limit the piston rod 130 from being separated from the slider 222 along a preset direction.
Since the sliding block 222 needs to drive the piston rod 130 to move along the preset direction, the clamping structure 230 can prevent the sliding block 222 from separating from the piston rod 130 along the preset direction, so when the clamping groove 233 is provided, the clamping block 231 is provided with the clamping groove 233 clamped with the clamping part 232 for facilitating the clamping of the clamping groove 233 and the clamping part 232, and the extending direction of the groove body of the clamping groove 233 is perpendicular to the preset direction. And the clamping portion 232 may be an annular groove provided at an end of the piston rod 130 connected to the clamping block 231. In this arrangement, when the clamping portion 232 is clamped to the clamping groove 233, the clamping portion 232 may extend into the clamping groove 233 in a direction perpendicular to the predetermined direction with respect to the clamping block 231 and be clamped to the wall of the clamping groove 233.
It should be noted that, in other embodiments of the present invention, other forms of the clamping structure 230 may be used to achieve the clamping effect of the piston rod 130 and the slider 222.
Further, referring to fig. 1-3, in the present embodiment, during the operation of the pressure pump 200, there are other factors that cause the operation of the pressure pump 200 to be abnormal, and in order to monitor the operation status of the pressure pump 200, the pressure pump 200 further includes one or more of a controller 250 and the following monitoring structures.
First, the pressure pump 200 further includes a push-pull force sensor 240, where the push-pull force sensor 240 is disposed at the connection between the clamping block 231 and the sliding block 222, for detecting the push-pull force applied by the sliding block 222 to the piston rod 130; the push-pull force sensor 240 and the driving motor 221 are electrically connected to the controller 250, and the controller 250 is configured to receive a push-pull force signal to control the pressure pump 200 to stop operating after the push-pull force exceeds a preset push-pull force range.
It should be noted that the controller 250 is configured to know the push-pull force of the driving slider 222 on the piston rod 130 monitored by the push-pull sensor 240 in real time, and compare the obtained real-time push-pull force value with a preset push-pull force range, and when the real-time push-pull force is within the preset push-pull force range, the pressure pump 200 works normally. When the real-time push-pull force exceeds the preset push-pull force range, there is a possibility that a blockage or other situations exist in the liquid outlet pipeline, and after the situation occurs, if the pressure pump 200 is continuously operated, the pressure of the liquid outlet is too large due to the excessive applied pressure or the sudden pressure release generated after the blockage is broken, and the patient is injured, so that once the real-time push-pull force exceeds the preset push-pull force range, the controller 250 controls the pressure pump 200 to stop operating, i.e. the driving motor 221 stops operating, and the first pressure stabilizing tube 140 stops liquid outlet.
Next, the pressure pump 200 further includes a current sensor 260 provided on a circuit of the pressure pump 200, the current sensor 260 for detecting a current of the driving motor 221; the current sensor 260 and the driving motor 221 are electrically connected to the controller 250, and the controller 250 is configured to receive a current signal to control the pressure pump 200 to stop operating after the current exceeds a preset current range.
It should be noted that the current sensor 260 is used to obtain the circuit current of the pressure pump 200 in real time, and by comparing the obtained real-time current with a preset current range, the pressure pump 200 works normally when the real-time current is within the preset current range. Since the current of the driving motor 221 corresponds to the torque of the driving motor 221 and the corresponding load, the driving slider 222 applies the load of the whole driving assembly to the push-pull force of the piston rod 130, and when the real-time current exceeds the preset current range, the damage of the equipment may occur, so that the controller 250 controls the pressure pump 200 to stop working in this case.
Further, referring to fig. 2, fig. 3 and fig. 11, fig. 11 shows a structure of a limit structure in an embodiment of the invention.
During the movement of the piston 120, the piston reciprocates in the inner cavity 111 under the driving action of the slider 222, so as to control the reciprocating movement of the piston 120, the pressure pump 200 further includes a limiting structure 270, and the limiting structure 270 includes a positioning block 271 and two position sensors 272.
The two position sensors 272 are connected with the base 210, and the two position sensors 272 are arranged at intervals along a preset direction to form a detection area 273; the positioning block 271 is connected with the slider 222 and is located in the detection region 273. When the slider 222 moves along the preset direction under the driving action of the driving motor 221, the positioning block 271 is driven to move synchronously in the detection area 273, so that the movement state of the piston 120 can be obtained by detecting the position of the positioning block 271 through the two position sensors 272.
In this embodiment, to monitor the movement of the piston 120 in the inner cavity 111, the interval between the two position sensors 272 in the preset direction may be consistent with the movement stroke of the piston 120, so that the movement of the positioning block 271 in the detection region 273 may reflect the movement of the piston 120 in the inner cavity 111 in real time.
The driving motor 221 and the two position sensors 272 are electrically connected to the controller 250, and the controller 250 is configured to receive the position signal of the positioning block 271 detected by the position sensor 272, so as to control the driving motor 221 to rotate reversely and drive the positioning block 271 to move towards the other end of the detection area 273 after the positioning block 271 moves towards the one end of the detection area 273.
Further, referring to fig. 1 to 11 again, based on the above-mentioned pressure pump 200, the present invention also discloses a control method of the pressure pump 200, wherein the control method of the pressure pump 200 is used for controlling the above-mentioned pressure pump 200, and comprises the following steps:
controlling the driving motor 221 to drive the piston 120 to reciprocate in the pump head 100 at a first preset speed so as to exhaust the pressure pump 200 until the liquid output by the first pressure stabilizing tube 140 does not contain bubbles;
the driving motor 221 is controlled to drive the piston 120 to reciprocate in the pump head 100 at a second preset speed along a preset direction, so that the first pressure regulator 140 continuously outputs the pressurized liquid.
It should be noted that, when the first preset speed and the second preset speed are set, the setting needs to be performed according to the actual situation. When the first preset speed is the same as the second preset speed, the controller 250 controls the driving motor 221 to have the same command when exhausting and continuously outputting the pressurized liquid, because the movement speed of the piston 120 during exhausting is the same as the speed of the piston 120 when continuously outputting the pressurized liquid.
When the first preset speed is different from the second preset speed, the controller 250 needs to control the driving motor 221 to exhaust and continuously output the pressurized liquid correspondingly due to the difference between the movement speed of the piston 120 during the exhaust process and the speed of the piston 120 when continuously outputting the pressurized liquid.
And as the piston 120 moves within the interior cavity 111 of the pump head 100, the movement of the piston 120 in the same direction is uniform.
It should be noted that, as shown in the above-mentioned pressure pump 200, the piston 120 of the pressure pump 200 is driven to move by the driving motor 221 during the movement process, then the piston rod 130 is driven to move by the sliding block 222, and then the piston 120 is driven to move relatively in the inner cavity 111 by the movement of the piston rod 130, that is, during this process, the movement of the piston 120 can be controlled by controlling the working state of the driving motor 221, so that the movement of the piston 120 in the same direction in the pump head 100 can be made to be uniform. In addition, since the reciprocating motion of the piston 120 in the pump head 100 includes a first stroke and a second stroke, and the motion direction of the piston 120 in the same stroke is unchanged, the piston 120 moves at a constant velocity in the first stroke, and the piston 120 moves at a constant velocity in the second stroke.
Further, the first chamber 112 decreases in volume with the second chamber 113 as the piston 120 moves along the first stroke; the volume of the first chamber 112 increases as the volume of the second chamber 113 decreases as the piston 120 moves along the second stroke. When the piston 120 moves to the end of the first stroke, the volume of the first chamber 112 is the first volume; when the piston 120 moves to the end of the second stroke, the volume of the second chamber 113 is the second volume; the first volume is the same as the second volume.
Thus, when the piston 120 is at the intermediate position of its stroke, the first and second chambers 112, 113 are symmetrical with respect to the piston 120, and the rate of change of the volume of the first chamber 112 and the rate of change of the second chamber 113 are the same during movement of the piston 120 in the inner chamber 111. Therefore, the liquid inlet amount and the liquid outlet amount of the pressure pump 200 are the same in the liquid inlet and liquid outlet processes, and the working stability of the pressure pump 200 can be improved.
Further, when the driving motor 221 is controlled to drive the piston 120 to reciprocate in the pump head 100 at the first preset speed to exhaust the pressure pump 200 until the liquid output by the first pressure stabilizing tube 140 contains no bubbles, the method comprises the following steps:
The driving motor 221 is controlled to drive the piston 120 to move at a first preset speed along a preset direction, and the positioning block 271 is driven to synchronously move in the detection region 273;
When one position sensor 272 in the detection area 273 detects that the positioning block 271 moves to one end of the detection area 273, the driving motor 221 is controlled to drive the piston 120 and the positioning block 271 to move along the direction opposite to the preset direction;
when the other position sensor 272 in the detection area 273 detects that the positioning block 271 moves to the other end of the detection area 273, the driving motor 221 is controlled to drive the piston 120 and the positioning block 271 to move along the preset direction;
until the liquid output from the first pressure stabilizing tube 140 does not contain bubbles.
When the driving motor 221 is controlled to drive the piston 120 to reciprocate in the pump head 100 along the preset direction at the second preset speed, so that the first pressure regulator 140 continuously outputs the pressurized liquid, the method comprises the following steps:
The driving motor 221 is controlled to drive the piston 120 to move along the preset direction at a second preset speed, and the positioning block 271 is driven to synchronously move in the detection area 273;
When one position sensor 272 in the detection area 273 detects that the positioning block 271 moves to one end of the detection area 273, the driving motor 221 is controlled to drive the piston 120 and the positioning block 271 to move along the direction opposite to the preset direction;
when the other position sensor 272 in the detection area 273 detects that the positioning block 271 moves to the other end of the detection area 273, the driving motor 221 is controlled to drive the piston 120 and the positioning block 271 to move along the preset direction.
Further, the pressure pump 200 may also detect the push-pull force applied by the slider 222 to the piston rod 130 during operation via the controller 250. To control the driving motor 221 to stop working through the controller 250 when the push-pull force sensor 240 detects that the push-pull force applied to the piston rod 130 exceeds the preset push-pull force range during the process that the driving motor 221 drives the piston 120 to move relative to the pump head 100. In order to avoid the excessive pressure applied or the sudden pressure release after the blockage is broken, the excessive pressure of the liquid is caused, and the patient is injured, so once the real-time push-pull force exceeds the preset push-pull force range, the controller 250 controls the pressure pump 200 to stop working, i.e. the driving motor 221 stops working, and the first voltage stabilizing tube 140 stops liquid.
In addition, the pressure pump 200 can also detect the current in the circuit through the controller 250 when in operation. To prevent the occurrence of damage to the apparatus by controlling the driving motor 221 to stop operation when the current sensor 260 detects that the current in the driving motor 221 exceeds the preset current range.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (14)
1. A pressure pump control method for controlling a pressure pump, characterized by:
the pressure pump comprises a base, a driving mechanism and a pump head;
The pump head comprises a pump body, a piston rod and an expandable first pressure stabilizing tube; the pump body is provided with an inner cavity, the piston and the piston rod are both positioned in the inner cavity, the piston is connected with the piston rod, the piston is attached to the wall of the inner cavity, and the piston rod is used for driving the piston to reciprocate along a preset direction relative to the inner cavity; the piston divides the inner cavity into a first chamber and a second chamber; the pump body is provided with a first liquid outlet which is correspondingly communicated with the first cavity and a second liquid outlet which is correspondingly communicated with the second cavity; the first liquid outlet and the second liquid outlet are both communicated with one end of the first pressure stabilizing tube, and the other end of the first pressure stabilizing tube is communicated with a surgical instrument; the first pressure stabilizing tube is used for switching between an expansion state and a contraction state so as to compensate the pressure in the first pressure stabilizing tube and reduce the flow change when the first pressure stabilizing tube continuously conveys liquid to the surgical instrument;
The pump head and the driving mechanism are both connected with the base, the driving mechanism comprises a driving motor and a sliding block in transmission connection with an output shaft of the driving motor, and the sliding block is in transmission connection with the piston rod, so that the driving motor can drive the piston to reciprocate along the preset direction;
The pressure pump further comprises a clamping structure; the clamping structure comprises a clamping block connected with the sliding block and a clamping part connected with the piston rod; the clamping part is used for being clamped with the clamping block so as to limit the piston rod to be separated from the sliding block along a preset direction;
The pressure pump further comprises a push-pull force sensor and a controller, wherein the push-pull force sensor is arranged at the joint of the clamping block and the sliding block and is used for detecting push-pull force applied to the piston rod by the sliding block; the push-pull force sensor and the driving motor are electrically connected with the controller, and the controller is used for receiving push-pull force signals so as to control the pressure pump to stop running after the push-pull force exceeds a preset push-pull force range;
the pressure pump control method comprises the following steps:
controlling a driving motor to drive a piston to reciprocate in a pump head at a first preset speed so as to exhaust the pressure pump until the liquid output by the first pressure stabilizing tube does not contain bubbles;
And controlling the driving motor to drive the piston to reciprocate in the pump head along the preset direction at a second preset speed, so that the first pressure stabilizing tube continuously outputs the pressurized liquid.
2. The pressure pump control method according to claim 1, characterized in that:
the pump head also comprises a second pressure stabilizing tube; the pump body is also provided with a first liquid inlet which is correspondingly communicated with the first cavity and a second liquid inlet which is correspondingly communicated with the second cavity;
The first liquid inlet and the second liquid inlet are communicated with one end of the second pressure stabilizing tube, the other end of the second pressure stabilizing tube is communicated with the liquid tank, and the second pressure stabilizing tube is used for switching between an expansion state and a contraction state so as to compensate the liquid pressure in the second pressure stabilizing tube and reduce the flow change of the second pressure stabilizing tube when the second pressure stabilizing tube continuously conveys liquid to the first liquid inlet and the second liquid inlet.
3. The pressure pump control method according to claim 2, characterized in that:
The first voltage stabilizing tube and the second voltage stabilizing tube can be made of any one of elastic plastic hose, braided hose or elastic net tube.
4. The pressure pump control method according to claim 2, characterized in that:
the pump body further comprises a first runner and a second runner;
The first flow passage is simultaneously communicated with the first liquid outlet and the second liquid outlet, and the outlet of the first flow passage is communicated with the first pressure stabilizing pipe;
The second flow passage is simultaneously communicated with the first liquid inlet and the second liquid inlet, and an inlet of the second flow passage is communicated with the second pressure stabilizing tube.
5. The pressure pump control method according to claim 4, characterized in that:
pipe joints are arranged at the outlet of the first flow channel and the inlet of the second flow channel;
The pipe joint at the outlet of the first flow passage is used for being detachably connected with the first pressure stabilizing pipe;
the pipe joint at the inlet of the second flow passage is used for being detachably connected with the second pressure stabilizing pipe.
6. The pressure pump control method according to claim 1, characterized in that:
The clamping block is provided with a clamping groove clamped with the clamping part, and the extending direction of the groove body of the clamping groove is perpendicular to the preset direction.
7. The pressure pump control method according to claim 1, characterized in that:
The pressure pump further comprises a controller and a current sensor arranged on a circuit of the pressure pump, wherein the current sensor is used for detecting current on the circuit of the pressure pump;
The current sensor and the driving motor are electrically connected with the controller, and the controller is used for receiving current signals so as to control the pressure pump to stop running after the current exceeds a preset current range.
8. The pressure pump control method according to claim 1, characterized in that:
the pressure pump further comprises a limiting structure and a controller, wherein the limiting structure comprises a positioning block and two position sensors;
The two position sensors are connected with the base, and are arranged at intervals along the preset direction to form a detection area; the positioning block is connected with the sliding block and is positioned in the detection area;
The driving motor and the two position sensors are electrically connected with the controller, and the controller is used for receiving position signals so as to control the driving motor to rotate reversely and drive the positioning block to move towards the other end of the detection area after the positioning block moves to one end of the detection area.
9. The pressure pump control method according to claim 1, characterized in that:
the movement of the piston in the same direction in the pump head is uniform movement.
10. The pressure pump control method according to claim 1 or 9, characterized in that:
The reciprocating motion of the piston in the pump head comprises a first stroke and a second stroke;
The reduced volume of the first chamber is the same as the increased volume of the second chamber when the piston moves along the first stroke; the increased volume of the first chamber is the same as the decreased volume of the second chamber when the piston moves along the second stroke;
when the piston moves to the end of the first stroke, the volume of the first chamber is a first volume; when the piston moves to the end of the second stroke, the volume of the second chamber is a second volume; the first volume is the same as the second volume.
11. The pressure pump control method according to claim 1, characterized in that:
The control driving motor drives the piston to reciprocate in the pump head at a first preset speed so as to exhaust the pressure pump until the liquid output by the first pressure stabilizing tube does not contain bubbles, and the control driving motor comprises:
Controlling the driving motor to drive the piston to move along the preset direction at the first preset speed, and driving the positioning block to synchronously move in a detection area;
When one position sensor in the detection area detects that the positioning block moves to one end of the detection area, the driving motor is controlled to drive the piston and the positioning block to move along the direction opposite to the preset direction;
when the other position sensor in the detection area detects that the positioning block moves to the other end of the detection area, the driving motor is controlled to drive the piston and the positioning block to move along the preset direction;
until the liquid output by the first voltage stabilizing tube does not contain bubbles.
12. The pressure pump control method according to claim 1, characterized in that:
The control of the driving motor to drive the piston to reciprocate in the pump head along the preset direction at a second preset speed, so that the first voltage regulator tube continuously outputs the pressurized liquid comprises:
Controlling the driving motor to drive the piston to move along the preset direction at the second preset speed, and driving the positioning block to synchronously move in the detection area;
When one position sensor in the detection area detects that the positioning block moves to one end of the detection area, the driving motor is controlled to drive the piston and the positioning block to move along the direction opposite to the preset direction;
When the other position sensor in the detection area detects that the positioning block moves to the other end of the detection area, the driving motor is controlled to drive the piston and the positioning block to move along the preset direction.
13. The pressure pump control method according to claim 1, characterized in that:
when the driving motor drives the piston to move relative to the pump head, and the push-pull force sensor detects that the push-pull force applied to the piston rod exceeds a preset push-pull force range, the pressure pump is controlled to stop working.
14. The pressure pump control method according to claim 1, characterized in that:
and when the current sensor detects that the current in the driving motor exceeds a preset current range, controlling the pressure pump to stop working.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911375023.XA CN110966178B (en) | 2019-12-27 | 2019-12-27 | Pressure pump control method |
| PCT/CN2020/088372 WO2021128686A1 (en) | 2019-12-27 | 2020-04-30 | Pump head, pressure pump, and pressure pump control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911375023.XA CN110966178B (en) | 2019-12-27 | 2019-12-27 | Pressure pump control method |
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| CN110966178A CN110966178A (en) | 2020-04-07 |
| CN110966178B true CN110966178B (en) | 2024-04-30 |
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| CN110966178B (en) * | 2019-12-27 | 2024-04-30 | 南微医学科技股份有限公司 | Pressure pump control method |
| CN115025322B (en) * | 2021-03-03 | 2024-10-01 | 南微医学科技股份有限公司 | Liquid conveying system and liquid discharging stabilizing method |
| CN113974782A (en) * | 2021-11-10 | 2022-01-28 | 山东华博电气有限公司 | Water jet medical pump |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011120105A1 (en) * | 2011-12-02 | 2013-06-06 | Ulrich Gmbh & Co. Kg | Device for sterile transfer of medium from medium reservoir in target system e.g. injection system, has flexible sealing element that is provided to close opening of container |
| CN203417371U (en) * | 2013-08-26 | 2014-02-05 | 苏州鼎诺医疗设备有限公司 | Infusion pump |
| WO2016033351A2 (en) * | 2014-08-28 | 2016-03-03 | Boston Scientific Limited | Double action infusion system |
| CN205198589U (en) * | 2015-12-02 | 2016-05-04 | 侯磊 | Medical transfer pump |
| CN105986985A (en) * | 2015-03-03 | 2016-10-05 | 中国石油化工股份有限公司 | Constant flow pump device |
| CN106762509A (en) * | 2017-02-07 | 2017-05-31 | 筱净（上海）生物科技有限公司 | Liquid pump and liquid jettison system |
| CN206234069U (en) * | 2016-10-31 | 2017-06-09 | 深圳市世椿智能装备股份有限公司 | A kind of type bidirectional piston pump |
| CN107002913A (en) * | 2014-11-25 | 2017-08-01 | 特诺尔艾佩斯公司 | Multilayer inflatable hose |
| CN107524869A (en) * | 2016-06-15 | 2017-12-29 | 艾格赛尔工业公司 | Hose arrangement and the method for manufacturing hose arrangement |
| CN108114342A (en) * | 2017-12-18 | 2018-06-05 | 中南民族大学 | One kind cut somebody's hair component, for medicine infusion device and supply medicine infusion system |
| CN209361512U (en) * | 2018-09-04 | 2019-09-10 | 廖永雄 | Two-way continuous syringe pump |
| CN211174580U (en) * | 2019-12-27 | 2020-08-04 | 南微医学科技股份有限公司 | Pump head and pressure pump |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10183130B2 (en) * | 2015-04-29 | 2019-01-22 | Carefusion 303, Inc. | Measuring valve health by pressure monitoring |
| CN109731178A (en) * | 2018-12-31 | 2019-05-10 | 杭州天启钛智能科技有限公司 | A kind of low-power consumption micro liquid pump |
| CN110966178B (en) * | 2019-12-27 | 2024-04-30 | 南微医学科技股份有限公司 | Pressure pump control method |
-
2019
- 2019-12-27 CN CN201911375023.XA patent/CN110966178B/en active Active
-
2020
- 2020-04-30 WO PCT/CN2020/088372 patent/WO2021128686A1/en active Application Filing
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011120105A1 (en) * | 2011-12-02 | 2013-06-06 | Ulrich Gmbh & Co. Kg | Device for sterile transfer of medium from medium reservoir in target system e.g. injection system, has flexible sealing element that is provided to close opening of container |
| CN203417371U (en) * | 2013-08-26 | 2014-02-05 | 苏州鼎诺医疗设备有限公司 | Infusion pump |
| WO2016033351A2 (en) * | 2014-08-28 | 2016-03-03 | Boston Scientific Limited | Double action infusion system |
| CN107002913A (en) * | 2014-11-25 | 2017-08-01 | 特诺尔艾佩斯公司 | Multilayer inflatable hose |
| CN105986985A (en) * | 2015-03-03 | 2016-10-05 | 中国石油化工股份有限公司 | Constant flow pump device |
| CN205198589U (en) * | 2015-12-02 | 2016-05-04 | 侯磊 | Medical transfer pump |
| CN107524869A (en) * | 2016-06-15 | 2017-12-29 | 艾格赛尔工业公司 | Hose arrangement and the method for manufacturing hose arrangement |
| CN206234069U (en) * | 2016-10-31 | 2017-06-09 | 深圳市世椿智能装备股份有限公司 | A kind of type bidirectional piston pump |
| CN106762509A (en) * | 2017-02-07 | 2017-05-31 | 筱净（上海）生物科技有限公司 | Liquid pump and liquid jettison system |
| CN108114342A (en) * | 2017-12-18 | 2018-06-05 | 中南民族大学 | One kind cut somebody's hair component, for medicine infusion device and supply medicine infusion system |
| CN209361512U (en) * | 2018-09-04 | 2019-09-10 | 廖永雄 | Two-way continuous syringe pump |
| CN211174580U (en) * | 2019-12-27 | 2020-08-04 | 南微医学科技股份有限公司 | Pump head and pressure pump |
Non-Patent Citations (1)
| Title |
|---|
| 张雅丽主编.现代中西医护理操作技能.复旦大学出版社,2013,(第1版),437-438. * |
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|---|---|
| WO2021128686A1 (en) | 2021-07-01 |
| CN110966178A (en) | 2020-04-07 |
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