CN112755321A - High-precision recyclable multi-channel injection pump device - Google Patents
High-precision recyclable multi-channel injection pump device Download PDFInfo
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- CN112755321A CN112755321A CN202110075012.0A CN202110075012A CN112755321A CN 112755321 A CN112755321 A CN 112755321A CN 202110075012 A CN202110075012 A CN 202110075012A CN 112755321 A CN112755321 A CN 112755321A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- 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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- 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
- A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
- A61M5/1452—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons
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- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
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- 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)
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Abstract
The invention discloses a high-precision recyclable multi-channel injection pump device, which comprises a control module, a motion module and a liquid distribution module, wherein the control module, the motion module and the liquid distribution module are arranged on a base module; an inclination angle alpha is arranged between the base mounting surface of the base support frame and the horizontal plane; the motion module comprises a linear guide rail assembly, a slide block injector mounting seat and a motor assembly; the liquid distribution module comprises a liquid distributor, an electromagnetic valve and a high-precision injector, wherein the electromagnetic valve and the high-precision injector are installed on the liquid distributor, and a piston rod of the high-precision injector is connected with a sliding block injector installation seat; the control module is respectively connected with the motor assembly and the electromagnetic valve, controls the motion module to drive the piston rod of the high-precision injector to move, and controls the motion direction of liquid in the liquid distributor to realize the suction and injection of the liquid; the invention can quickly discharge air by setting the inclination angle alpha, can realize the simultaneous work of a plurality of high-precision injectors and realize high-precision liquid injection.
Description
Technical Field
The invention relates to the technical field of injection pumps of medical instruments, in particular to a high-precision recyclable multi-channel injection pump device.
Background
The injection pump is an external power device which pushes a piston push rod of an injector to reciprocate, so that the movement of liquid injection and liquid pressure maintaining in a certain range is realized. The injection pump is mainly applied to clinical medicine injection, gene detection research experiments and the like. The existing injection pump is generally a single channel and has the problems of low injection precision, unstable injection flow, incapability of automatic reciprocating and circulating work of imbibition and injection and the like.
Disclosure of Invention
In order to overcome the defects of the technology, the invention provides a high-precision recyclable multi-channel injection pump device, which can circularly and repeatedly adopt multi-channel liquid suction and injection, and has high injection precision and stable injection flow.
The technical scheme adopted by the invention for overcoming the technical problems is as follows:
the invention provides a high-precision recyclable multi-channel injection pump device, which comprises a control module, a motion module and a liquid distribution module, wherein the control module, the motion module and the liquid distribution module are arranged on a base module; wherein, an inclination angle alpha is arranged between the base mounting surface of the base support frame and the horizontal plane; the motion module at least comprises a linear guide rail assembly arranged on the base, a sliding block injector mounting seat arranged on the linear guide rail assembly, and a motor assembly arranged on the sliding block injector mounting seat; the liquid distribution module at least comprises a liquid distributor arranged on the base, a liquid inlet interface component, a liquid outlet joint component, an electromagnetic valve and at least one high-precision injector which are respectively arranged on the liquid distributor, wherein a piston rod of the high-precision injector is connected with a slide block injector mounting seat; the control module is respectively connected with the motor assembly and the electromagnetic valve and used for controlling the motion module to drive the piston rod of the high-precision injector to move through the motor assembly and controlling the motion direction of liquid in the liquid distributor through controlling the electromagnetic valve so as to suck and inject the liquid.
Further, the inclination angle α is equal to or greater than 5 ° and equal to or less than 20 °.
Further, the inclination angle α is 11 °.
The inclination angle alpha can quickly exhaust air concentrated at the upper part of the liquid distributor and the position of the high-precision injector close to the liquid distributor, and the influence on the injection precision due to the coanda effect of the micro-bubbles under the condition of low injection pressure is prevented.
Furthermore, the motion module further comprises a travel switch arranged on the base, a motor mounting seat arranged on the slide block injector mounting seat and a travel switch ejector rod arranged on the slide block injector mounting seat, wherein the travel switch and the travel switch ejector rod are installed in a contact mode.
The control module is matched with the travel switch and the travel switch ejector rod to control the motion module to do reciprocating motion circularly.
Further, the control module at least comprises a programmable control unit which is respectively connected with the motor assembly, the travel switch and the electromagnetic valve and is used for receiving external signals or controlling the reciprocating circular motion of the piston rod of the high-precision injector by controlling the motor assembly and the travel switch according to preset parameters and guiding the motion direction of liquid in the liquid distributor by controlling the electric valve.
Furthermore, the solenoid valve corresponds to the high-precision injector, wherein the solenoid valve is a high-sensitivity two-position three-way solenoid valve control module.
Further, the liquid outlet joint assembly corresponds to the high-precision injector and comprises an output liquid pipe and a liquid outlet joint for fixing the output liquid pipe to the liquid distributor.
The electromagnetic valves, the high-precision syringes and the liquid outlet assemblies are arranged in a one-to-one correspondence manner, wherein the liquid outlet assemblies can discharge liquid and can feed liquid, and unidirectional liquid transfer and sample application are realized.
Further, the base module further comprises a motor lead screw mounting seat, a motor lead screw supporting frame and a fixing seat, wherein the motor lead screw mounting seat and the motor lead screw supporting frame are mounted on the base, and the fixing seat is mounted on the base supporting frame.
Further, motor element includes high accuracy step motor, connects high accuracy step motor's rotary encoder at least to and run through the motor lead screw of high accuracy step motor and rotary encoder installation, the one end of motor lead screw is installed to motor lead screw mount pad, and other end elastic mounting is at motor lead screw support frame.
The invention has the beneficial effects that:
1. by setting the inclination angle alpha, air concentrated at the upper part of the liquid distributor and at the position of the high-precision injector close to the liquid distributor is quickly exhausted, so that the influence of the coanda effect of the micro-bubbles on the injection precision under the condition of low injection pressure is prevented;
2. the simultaneous working of a plurality of high-precision injectors can be realized simultaneously, and the liquid suction and injection efficiency is improved;
3. and the precision can be controlled circularly and repeatedly and accurately by matching the control module with the high-precision stepping motor, the travel switch and the travel switch ejector rod, so that the control of the nanoliter level of the liquid injection volume is realized, and the stable injection flow is ensured.
4. In addition to drawing fluid through the inlet fitting assembly and directing the fluid through the outlet fitting assembly for injection or spotting onto a designated target, one-way pipetting and spotting between the outlet fitting assemblies may be performed.
Drawings
FIG. 1 is a schematic block diagram of a high precision recyclable multi-channel syringe pump apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a high precision recyclable multi-channel syringe pump apparatus according to an embodiment of the present invention; a
FIG. 3 is a schematic view of the reverse structure of FIG. 2;
FIG. 4 is a schematic cross-sectional view of a high precision recyclable multi-channel syringe pump apparatus of an embodiment of the present invention;
FIG. 5 is a schematic diagram of a normal operating state of a high-precision recyclable multi-channel syringe pump apparatus according to an embodiment of the present invention;
in the figure, 1 — control module; 2-a motion module; 21-a motor assembly; 211-a motor; 212-a rotary encoder; 213-motor lead screw; 22-motor mount; 23-a slider injector mount; 24-a linear guide rail assembly; 241-a guide rail; 242-a slider; 25-a travel switch ejector rod; 26-a travel switch; 3-a liquid dispensing module; 31-a liquid inlet joint assembly; 311-liquid inlet joint; 312-an input liquid tube; 32-a liquid dispenser; 33-high precision syringe; 34-a solenoid valve; 35-a liquid outlet fitting assembly; 351-a liquid outlet connection; 352-an output liquid pipe; 36-plug; 4-a base module; 41-a base; 42-a base support; 421-a base mounting surface; 43-motor lead screw mounting seat; 44-motor screw rod support frame; 45-fixed seat.
Detailed Description
In order to facilitate a better understanding of the invention for those skilled in the art, the invention will be described in further detail with reference to the accompanying drawings and specific examples, which are given by way of illustration only and do not limit the scope of the invention.
As shown in fig. 1, the high-precision recyclable multi-channel syringe pump apparatus according to the embodiment includes a control module 1, a motion module 2, and a liquid dispensing module 3, which are mounted on a base module 4, wherein the control module 1 receives a signal to control the motion module 2, so as to guide the liquid dispensing module to suck and inject liquid.
The motion module comprises a motor assembly 21, a motor mounting seat 22, a slide block injector mounting seat 23, a linear guide rail assembly 24, a travel switch mandril 25 and a travel switch 26. Wherein the motor assembly 21 comprises a high precision stepper motor 211, a rotary encoder 212 and a motor screw 213.
The high-precision stepping motor and the rotary encoder are connected and then installed on the motor installation seat, the motor installation seat 22 and the travel switch mandril 26 are installed on the slide block injector installation seat 23, and the slide block injector installation seat 23 is installed on the linear guide rail assembly 24.
The control module 1 comprises at least a programmable unit. The preferred programmable unit in this embodiment is a single chip microcomputer or a PLC. The control module is installed at the bottom of the base support frame 42, and is connected with the motor assembly 21, the travel switch 26 and the solenoid valve 34 to receive external signals or preset parameters. Wherein the preset parameters include a maximum stroke of the motor assembly 21 according to a maximum stroke preset value of the high precision injector 33; or subdividing the motor assembly 21 by specific steps according to the requirement of working precision; or setting the required operating conditions in the control module 1 according to actual needs.
The motion module controls the motion stroke and direction of the motor assembly 21, the operation of the stroke switch 26 and the opening and closing of the solenoid valve 34 based on the received external signal or preset parameters, thereby guiding the pipetting and injection of the liquid dispensing module. One end of the motor screw rod 213 penetrates through the motor and the encoder and is fixed on the motor screw rod mounting seat 43, and the other end of the motor screw rod 213 is elastically connected to the motor screw rod supporting frame 44, so that the stability of the motor assembly in the movement process is ensured.
The stroke switch 26 is mounted on the base 41 through contact with the stroke switch plunger 25 to control the start and end positions of the motion module, which is mainly used to precisely control the stroke of the piston rod of the high precision syringe 33 by cyclic reciprocation. Thereby realizing the control of the nanoliter level of the liquid injection volume.
As shown in fig. 2 and 3, the liquid distribution module 3 includes a liquid inlet joint assembly 31, a liquid distributor 32, a high-precision syringe 33, a solenoid valve 34, a liquid outlet joint assembly 35 and a plug 36. The inlet fitting assembly includes an inlet fitting and an inlet tube for introducing the desired liquid into the liquid distributor 32, and the liquid outlet interface assembly 35 includes a liquid outlet fitting 351 and an outlet tube 352 for directing the liquid from the liquid distributor 32 to the target on demand. The liquid dispenser 32 is mounted on the base 41. The liquid inlet joint assembly 31, the high-precision injector 33, the solenoid valve 34, the liquid outlet joint assembly 35 and the plug 36 are mounted on the liquid distributor 32.
In the embodiment, the electromagnetic valves, the high-precision injector and the liquid outlet assemblies are arranged in one-to-one correspondence, preferably, the electromagnetic valves are high-sensitivity two-position three-way electromagnetic valves, one end of the high-precision injector is connected with the liquid distributor, and the piston rod at the other end of the high-precision injector is arranged on the slide block injector mounting seat 23 to convert kinetic energy generated by the motion module 2 into pressure potential energy; the liquid distribution module leads the liquid sucked from the liquid inlet joint assembly 31 to the liquid outlet interface assembly 35 according to actual requirements under the guidance of the motion module 2, so as to inject the liquid onto a specified target body.
As shown in fig. 4, the base module includes a base 41, a base support frame 42, a motor screw support frame 44 and a motor screw mounting seat 43, as shown in fig. 5, wherein a mounting surface between the mounting base 421 of the base support frame 42 and the base 41 has a certain inclination angle α. Due to gravity during operation of the syringe pump apparatus, air inside the syringe pump apparatus may be concentrated to the upper portion of the liquid dispenser or the end portion of the high-precision syringe near the liquid dispenser. In order to exhaust air in the injection pump device quickly, the air is prevented from being distributed in the whole high-precision injector, and the exhaust time is prolonged. If the air cannot be discharged as quickly as possible, the air bubbles are attached to the inner surface of the high-precision injector due to the coanda effect of the micro-bubbles under the condition of low injection pressure, so that the air cannot be discharged completely, and the injection pressure and the injection precision are influenced. In the present embodiment, the inclination angle α is preferably 11 °.
As shown in fig. 2, the structural schematic diagram of this embodiment, the control module 1 controls the motor assembly 21 to move along the linear guide rail assembly 24 according to an external signal or a preset operation condition, the motor assembly 21 is connected to the piston rods of the 6 high-precision syringes 33 through the slider syringe mounting seat 23, and drives the piston rods to move in a direction away from the liquid distributor 32, so as to form a pressure difference in the syringes of the 6 high-precision syringes 33, and then suck a large amount of liquid through the liquid inlet joint assembly 31 of the liquid distributor 32, and at the same time, control the movement direction of the liquid to the high-precision syringes 33 through the control module electromagnetic valve 34, control the motor assembly 21 through the control module 1 to drive the piston rods of the high-precision syringes 33 to move in a direction close to the liquid distributor 32, and control the movement direction of the liquid to the liquid, thereby achieving injection or spotting onto a designated target.
In some embodiments of the present invention, it is also possible to perform single-directional pipetting and spotting only through the fluid outlet connector assembly 35 by controlling the opening and closing of the internal channel of the solenoid valve 34, first inserting the output fluid tube 352 into the fluid to be transferred, the control module 1 opens the switch of the communication channel between the electromagnetic valve and the output liquid pipe 352, and controls the motor assembly 21 to drive the piston rod of the high-precision injector 33 to move towards the motor lead screw support frame 44 along the linear guide rail assembly 24, so as to suck the liquid to be transferred into the output liquid pipe, finally, the control module 1 opens the switch of the communication channel between the electromagnetic valve 34 and the output liquid pipe 352, at the same time, the control motor assembly 21 carries the piston rod of the high-precision injector 33 to move along the linear guide assembly 24 toward the motor lead screw mounting seat 43, so as to inject or spot the liquid in the output liquid pipe 352 onto the designated target.
The foregoing merely illustrates the principles and preferred embodiments of the invention and many variations and modifications may be made by those skilled in the art in light of the foregoing description, which are within the scope of the invention.
Claims (10)
1. The utility model provides a high accuracy circulated multichannel syringe pump device which characterized in that: comprises a control module (1), a motion module (2) and a liquid distribution module (3) which are arranged on a base module (4),
the base module at least comprises a base support frame (42) and a base (41) arranged on the base support frame (42); wherein, an inclination angle alpha is arranged between the base mounting surface (421) of the base support frame (42) and the horizontal plane;
the motion module (2) at least comprises a linear guide rail assembly (24) arranged on a base (41), a sliding block injector mounting seat (23) arranged on the linear guide rail assembly (24), and a motor assembly (21) arranged on the sliding block injector mounting seat (23);
the liquid distribution module (3) at least comprises a liquid distributor (32) arranged on a base (41), a liquid inlet interface component (31), a liquid outlet joint component (35), an electromagnetic valve (34) and at least one high-precision injector (33) which are respectively arranged on the liquid distributor, wherein a piston rod of the high-precision injector (33) is connected with a sliding block injector mounting seat (23);
the control module (1) is respectively connected with the motor assembly (21) and the electromagnetic valve (34) and used for controlling the motion module (2) to drive the piston rod of the high-precision injector (33) to move through the motor assembly (21) and controlling the motion direction of liquid in the liquid distributor (32) through the electromagnetic valve (34), so that the liquid is sucked and injected.
2. A control device for a robot gun head according to claim 1, characterised in that: the inclination angle alpha is greater than or equal to 5 degrees and less than or equal to 20 degrees.
3. A control device for a robot gun head according to claim 3, characterised in that: the inclination angle α is 11 °.
4. The high precision recyclable multi-channel syringe pump apparatus of claim 1, wherein: the motion module further comprises a travel switch (26) arranged on the base (41), a motor mounting seat (22) arranged on the slide block injector mounting seat (23), and a travel switch ejector rod (25) arranged on the slide block injector mounting seat (23), wherein the travel switch (26) and the travel switch ejector rod (25) are installed in a contact mode.
5. The high precision recyclable multi-channel syringe pump apparatus of claim 4, wherein: the control module at least comprises a programmable control unit which is respectively connected with the motor assembly (21), the travel switch (26) and the electromagnetic valve (34) and is used for receiving external signals or controlling the reciprocating circular motion of a piston rod of the high-precision injector (33) by controlling the motor assembly (21) and the travel switch (26) according to preset parameters and guiding the motion direction of liquid in the liquid distributor by controlling the electric valve.
6. A high precision recyclable multi-channel syringe pump apparatus as described in any of claims 1-5 wherein: the electromagnetic valve (34) is arranged corresponding to the high-precision injector, wherein the electromagnetic valve is a high-sensitivity two-position three-way electromagnetic valve.
7. The high precision recyclable multi-channel syringe pump apparatus of claim 4, wherein: a liquid outlet fitting assembly (35) is provided in correspondence with the high precision syringe, the liquid outlet fitting assembly (35) including an output liquid tube (352) and a liquid outlet fitting (351) securing the output liquid tube (352) to the liquid distributor (32).
8. A high precision recyclable multi-channel syringe pump apparatus as claimed in claim 8 wherein the liquid dispenser is further connected to a stopper (36) and the inlet fitting assembly (31) comprises an inlet tube (352) for introducing liquid to the liquid dispenser and an inlet fitting for securing the inlet tube (352) to the liquid dispenser.
9. A high precision recyclable multi-channel syringe pump device according to claim 1 characterized in that the base module (4) further comprises a motor lead screw mounting seat (43) mounted on the base (41), a motor lead screw support bracket (44) and a fixed seat (45) mounted on the base support bracket (42).
10. A high precision recyclable multi-channel syringe pump device according to claim 9 characterized in that the motor assembly (21) comprises at least a high precision stepper motor (211), a rotary encoder (212) connected to the high precision stepper motor (211), and a motor lead screw (213) installed through the high precision stepper motor (211) and the rotary encoder (212), one end of the motor lead screw (213) is installed to the motor lead screw installation seat (43), and the other end is elastically installed to the motor lead screw support frame (44).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110075012.0A CN112755321A (en) | 2021-01-20 | 2021-01-20 | High-precision recyclable multi-channel injection pump device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110075012.0A CN112755321A (en) | 2021-01-20 | 2021-01-20 | High-precision recyclable multi-channel injection pump device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112755321A true CN112755321A (en) | 2021-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110075012.0A Pending CN112755321A (en) | 2021-01-20 | 2021-01-20 | High-precision recyclable multi-channel injection pump device |
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| CN (1) | CN112755321A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113665863A (en) * | 2021-07-30 | 2021-11-19 | 陕西邦邦生物技术服务有限责任公司 | High-precision adjustable multi-channel filling system and filling method |
| CN114632217A (en) * | 2022-03-01 | 2022-06-17 | 重庆国科医工科技发展有限公司 | Automatic drug delivery device based on micro-displacement sensor |
-
2021
- 2021-01-20 CN CN202110075012.0A patent/CN112755321A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113665863A (en) * | 2021-07-30 | 2021-11-19 | 陕西邦邦生物技术服务有限责任公司 | High-precision adjustable multi-channel filling system and filling method |
| CN114632217A (en) * | 2022-03-01 | 2022-06-17 | 重庆国科医工科技发展有限公司 | Automatic drug delivery device based on micro-displacement sensor |
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