CN107485762B - Injection pump - Google Patents
Injection pump Download PDFInfo
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- CN107485762B CN107485762B CN201710799989.0A CN201710799989A CN107485762B CN 107485762 B CN107485762 B CN 107485762B CN 201710799989 A CN201710799989 A CN 201710799989A CN 107485762 B CN107485762 B CN 107485762B
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- preheating
- brake
- cavity
- driving
- pump
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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
- A61M5/178—Syringes
- A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
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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
- A61M5/178—Syringes
- A61M5/31—Details
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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
- A61M5/44—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 having means for cooling or heating the devices or media
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/46—Inspecting cleaned containers for cleanliness
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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
- A61M5/178—Syringes
- A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
- A61M2005/2006—Having specific accessories
-
- 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
-
- 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
- A61M2205/3331—Pressure; Flow
-
- 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
- A61M2205/36—General characteristics of the apparatus related to heating or cooling
Abstract
The invention aims to provide a syringe pump which is used for solving the technical problem of liquid medicine injection. The emergency brake pump comprises a pump body, an injection system, an emergency brake system and a control system, wherein an injection cavity and an emergency brake cavity are arranged on the pump body; the injection system comprises a driving pneumatic pump, a resetting pneumatic pump, a driving pneumatic tube, a resetting pneumatic tube and a piston, wherein the piston can be arranged in the injection cavity in a back-and-forth moving mode and divides the injection cavity into a pneumatic cavity and a liquid storage cavity; the driving air pressure pipe and the reset air pressure pipe are respectively communicated with the air pressure cavity, the driving air pressure pipe is provided with an air inlet electric control valve, the reset air pressure pipe is provided with an air outlet electric control valve, and the air inlet electric control valve and the air outlet electric control valve are respectively and electrically connected with the control system. The invention has the beneficial effects that: low noise, high reliability and high safety.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to an injection pump.
Background
A syringe pump is one of commonly used medical devices, and in the prior art, the syringe pump is also called a screw pump because it is composed of a stepping motor and its driver, a screw, a bracket, and the like, and has a screw rod and a nut that reciprocate. The nut is connected with the piston of the injector, and the injector is used for containing liquid medicine, so that high-precision and stable non-pulsating liquid transmission is realized. However, the prior art syringe pump is noisy, and reliability and safety are still to be improved.
Disclosure of Invention
The invention aims to provide a syringe pump which is used for solving the technical problem of liquid medicine injection.
The technical scheme adopted by the invention for solving the technical problems is as follows:
an injection pump comprises a pump body, an injection system, an emergency braking system and a control system, wherein an injection cavity and an emergency braking cavity are arranged on the pump body;
the injection system comprises a driving pneumatic pump, a resetting pneumatic pump, a driving pneumatic tube, a resetting pneumatic tube and a piston, wherein the piston can be arranged in the injection cavity in a back-and-forth moving mode and divides the injection cavity into a pneumatic cavity and a liquid storage cavity; the driving air pressure pipe and the reset air pressure pipe are respectively communicated with the air pressure cavity, the driving air pressure pipe is provided with an air inlet electric control valve, the reset air pressure pipe is provided with an air outlet electric control valve, and the air inlet electric control valve and the air outlet electric control valve are respectively and electrically connected with the control system; the driving pneumatic pump and the resetting pneumatic pump are respectively arranged on the pump body, the air outlet end of the driving pneumatic pump is communicated with the driving pneumatic pipe, and the air inlet end of the resetting pneumatic pump is communicated with the resetting pneumatic pipe; an air pressure sensor is arranged in the air pressure cavity and is electrically connected with the control system; an ultrasonic sensor is arranged in the liquid storage cavity and is electrically connected with the control system; a liquid outlet and a liquid inlet are arranged on the liquid storage cavity;
the emergency braking system comprises a braking rod and an electromagnetic braking mechanism, the rear end of the braking rod is connected with the piston, the front end of the braking rod is positioned in the emergency braking cavity, and one side of the braking rod is provided with a braking convex tooth; a brake mounting plate is arranged in the emergency brake cavity, a brake through hole for passing through a brake rod is arranged on the brake mounting plate, and the electromagnetic brake mechanism is arranged on the brake mounting plate; the electromagnetic braking mechanism comprises a soft magnet, a braking plate and a braking reset spring, wherein the soft magnet is arranged on one side of the braking through hole, a coil is wound outside the soft magnet, the coil is connected with a power supply through a braking electric control switch, and the braking electric control switch is electrically connected with the control system; the brake plate is arranged at the other side of the brake through hole relative to the soft magnet, the rear end of the brake plate is connected with the brake return spring, and the rear end of the brake return spring is arranged on the brake mounting plate through a fixing plate; the front end of the brake plate is provided with a brake clamping plate, the outer end of the brake clamping plate is provided with a brake clamping tooth, and the brake clamping tooth is arranged corresponding to the brake convex tooth.
Furthermore, brake sliding rails are arranged at two ends of the brake plate, a brake sliding groove is arranged on the brake mounting plate, and the brake sliding rails are slidably arranged in the brake sliding groove.
Furthermore, the soft magnet adopts a U-shaped structure.
Furthermore, the device also comprises a preheating system, wherein a preheating cavity is arranged on the pump body, and the preheating system is arranged in the preheating cavity; the preheating system comprises a preheating bottom plate, a preheating driving motor, a preheating driving screw rod, a preheating driving screw nut, a preheating driving sliding block, a preheating plate and a temperature sensor, wherein the preheating bottom plate is arranged in the preheating cavity, preheating mounting seats are arranged at two ends of the preheating bottom plate, two ends of the preheating driving screw rod are rotatably arranged on the preheating mounting seats, and a preheating sliding groove is formed in the upper end of the preheating bottom plate in the longitudinal direction; the preheating driving motor is electrically connected with the control system, the preheating driving motor is installed on the preheating installation seat, and the power output end of the preheating driving motor is connected with the power input end of the preheating driving screw rod; the preheating driving screw nut is in threaded connection with the preheating driving screw rod, the preheating driving sliding block is installed on the preheating driving screw nut, a preheating sliding rail is arranged at the lower end of the preheating driving sliding block, and the preheating sliding block is installed in the preheating sliding groove in a sliding mode; the preheating plate is positioned at the outer side of the liquid storage cavity, one side of the preheating plate is connected with the preheating driving sliding block through a connecting frame, a preheating electric control switch is arranged on a power line of the preheating plate, and the preheating electric control switch is electrically connected with a control system; the temperature sensor is arranged in the liquid storage cavity and is electrically connected with the control system.
Further, the preheating driving motor adopts a stepping motor.
Furthermore, the preheating plate is of a circular ring structure and is sleeved outside the liquid storage cavity.
Furthermore, the device also comprises a self-cleaning system, and a self-cleaning cavity is arranged on the pump body; the self-cleaning system comprises a self-cleaning pump, a self-cleaning liquid inlet pipe, a self-cleaning liquid outlet pipe and a cleanliness detector, wherein a cleaning liquid is contained in the self-cleaning cavity; the self-cleaning pump is electrically connected with the control system; the liquid outlet end of the self-cleaning liquid inlet pipe is communicated with a liquid inlet on the liquid storage cavity, and the liquid inlet end of the self-cleaning liquid outlet pipe is communicated with a liquid outlet on the liquid storage cavity; the cleanliness detector is communicated with the self-cleaning liquid outlet pipe through a pipeline and is electrically connected with the control system.
The effect provided in the summary of the invention is only the effect of the embodiment, not all the effects of the invention, and one of the above technical solutions has the following advantages or beneficial effects:
the device adopts a pneumatic propulsion injection process, and has low noise. The air pressure sensor arranged on the device can detect and ensure that the air pressure is in a controllable interval, and when an accident occurs, the injection system can be stopped to work through the emergency braking system, so that the reliability and the safety are higher. The preheating system arranged in the device can accurately preheat the liquid medicine position, and realizes the controllability of preheating temperature, so that the patient is more comfortable in the injection process. The self-cleaning system in the device can clean the liquid storage cavity, and the cleanness of the device is ensured.
Drawings
FIG. 1 is a schematic longitudinal cross-sectional view of an embodiment of the present invention;
FIG. 2 is a schematic view taken along line A-A in FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 2;
in the figure: 1. a pump body; 2. an injection cavity; 3. a preheating chamber; 4. a self-cleaning chamber; 5. driving the pneumatic pump; 6. resetting the pneumatic pump; 7. driving the pneumatic tube; 8. resetting the air pressure pipe; 9. a pneumatic chamber; 10. a liquid storage cavity; 11. a piston; 12. a seal ring; 13. an air inlet electric control valve; 14. an air outlet electric control valve; 15. an air pressure sensor; 16. an ultrasonic sensor; 17. a liquid outlet; 18. a liquid inlet; 19. a brake lever; 20. braking the convex teeth; 21. a brake mounting plate; 22. a brake through hole; 23. soft magnetic iron; 24. a brake plate; 25. a brake return spring; 26. braking the slide rail; 27. a braking chute; 28. braking the clamping plate; 29. braking the latch; 30. preheating a bottom plate; 31. preheating a driving motor; 32. preheating a driving screw rod; 33. preheating a driving nut; 34. preheating a driving slide block; 35. preheating a plate; 36. a temperature sensor; 37. preheating the mounting base; 38. preheating the chute; 39. a self-cleaning pump; 40. a control box; 41. an emergency braking chamber; 42. a fixing plate; 43. and a liquid outlet port.
Detailed Description
In order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and techniques are omitted so as to not unnecessarily limit the invention.
As shown in fig. 1 to 3, a syringe pump includes a pump body 1, a syringe system, a preheating system, an emergency braking system, a self-cleaning system, and a control system. The pump body 1 is mainly used for mounting other functional components, and the pump body 1 is provided with an injection cavity 2, a preheating cavity 3, a self-cleaning cavity 4 and an emergency braking cavity 41.
The injection system is used for realizing extrusion driving of the liquid medicine and promoting the liquid medicine to smoothly enter the human body; the injection system comprises a driving pneumatic pump 5, a resetting pneumatic pump 6, a driving pneumatic pipe 7, a resetting pneumatic pipe 8 and a piston 11. The piston 11 can be arranged in the injection cavity 2 in a back-and-forth moving way, and the piston 11 divides the injection cavity 2 into an air pressure cavity 9 and a liquid storage cavity 10; the peripheral surface of the piston 11 is provided with a sealing ring 12 which is closely contacted with the inner cavity wall of the injection cavity 2. The driving air pressure pipe 7 and the reset air pressure pipe 8 are respectively arranged at the rear end of the air pressure cavity 9 and are communicated with the air pressure cavity 9; the driving air pressure pipe 7 is provided with an air inlet electric control valve 13, the resetting air pressure pipe 8 is provided with an air outlet electric control valve 14, and the air inlet electric control valve 13 and the air outlet electric control valve 14 are respectively and electrically connected with the control system. The driving pneumatic pump 5 is arranged at the rear end of the pump body 1, and the air outlet end of the driving pneumatic pump 5 is communicated with the driving pneumatic pipe 7 through a pipeline. And a power line of the driving pneumatic pump 5 is provided with a driving electric control switch which is electrically connected with the control system. The reset pneumatic pump 6 is arranged at the rear end of the pump body 1, and the air inlet end of the reset pneumatic pump 6 is communicated with the reset pneumatic tube 8 through a pipeline. And a reset electric control switch is arranged on a power line of the reset pneumatic pump 6 and is electrically connected with the control system. The rear end of the air pressure cavity 9 is provided with an air pressure sensor 15, the air pressure sensor 15 is used for detecting air pressure in the air pressure cavity 9, and the air pressure sensor 15 is electrically connected with the control system. When the air pressure sensor 15 detects that the air pressure exceeds a certain value, the control system stops driving the air pressure pump 5 to work, and the air inlet electric control valve 13 is closed; and simultaneously, the reset pneumatic pump 6 is started to work, and the air outlet electric control valve 14 is opened until the air pressure in the air pressure cavity 9 is within the standard air pressure range, so that the air pressure in the air pressure cavity 9 is stabilized, and the piston 11 is further stably pushed. An ultrasonic sensor 16 is arranged at the front end of the liquid storage cavity 10, and the ultrasonic sensor 16 is electrically connected with the control system; the ultrasonic sensor 16 is used for detecting the distance between the front end of the piston 11 and the front end of the liquid storage cavity 10, so that the storage amount of liquid medicine in the liquid storage cavity 10 is detected, when the liquid medicine is nearly exhausted, the control system controls and drives the air pressure pump 5 to stop working, and alarms through the control system, and the control system is provided with an alarm. The front end of the liquid storage cavity 10 is provided with a liquid outlet 17, and the liquid outlet 17 is communicated with an injection pipeline through a pipeline. A liquid inlet 18 is arranged on the liquid storage cavity 10, and the liquid inlet 18 is used for injecting liquid medicine into the liquid storage cavity 10; the liquid inlet 18 is provided with a liquid inlet valve.
When the air pressure in the air pressure cavity 9 is abnormal, the emergency braking system is used for braking the movement of the piston 11, so that the discomfort of a human body caused by the injection process is prevented. The emergency braking system comprises a braking rod 19 and an electromagnetic braking mechanism, wherein the rear end of the braking rod 19 is connected with the front end of the piston 11, the front end of the braking rod 19 penetrates through the front end of the liquid storage cavity 10 to enter the emergency braking cavity 41, and the braking rod 19 moves along with the piston 11. One side of the outer end part of the brake rod 19 is provided with a row of brake convex teeth 20 along the axial direction of the brake rod 19, and the brake convex teeth 20 are matched with the electromagnetic brake mechanism for use. A sealing element (such as a sealing ring) is arranged between the brake rod 19 and the front end cavity wall of the liquid storage cavity 10 to prevent leakage of the liquid medicine. A brake mounting plate 21 is arranged in the emergency brake cavity 41, and a brake through hole 22 for passing through the brake rod 19 is arranged on the brake mounting plate 21. The electromagnetic brake mechanism is mounted on the brake mounting plate 21 and is used for realizing emergency braking of the brake lever 19 and further limiting the movement of the piston 11. The electromagnetic braking mechanism comprises a soft magnet 23, a braking plate 24 and a braking return spring 25, wherein the soft magnet 23 is installed on one side of the braking through hole 22, the soft magnet 23 is of a U-shaped structure, a coil is wound outside the soft magnet 23 and is connected with a power supply through a braking electric control switch, and the braking electric control switch is electrically connected with the control system. The brake plate 24 is arranged at the other side of the brake through hole 22 opposite to the soft magnet 23, the rear end of the brake plate 24 is connected with the brake return spring 25, and the brake return spring 25 is arranged on the brake mounting plate 21 through the fixing plate 42. The two ends of the brake plate 24 are provided with brake sliding rails 26, the brake mounting plate 21 is provided with brake sliding grooves 27, and the brake sliding rails 26 are slidably mounted in the brake sliding grooves 27. The front end of the braking plate 24 is provided with a braking clamping plate 28, the outer end of the braking clamping plate 28 is provided with a braking clamping tooth 29, and the braking clamping tooth 29 is arranged corresponding to the braking convex tooth 20. When the electromagnetic braking mechanism needs to brake the brake rod 19, the coil of the soft magnet 23 is electrified, the soft magnet 23 generates magnetic force, the brake plate 24 is further adsorbed, the brake return spring 25 is stretched, the brake latch 29 is clamped with the brake convex tooth 20 on the brake rod 19, and the brake rod 19 stops moving under the clamping action. When the brake lever 19 does not need to brake, the coil is powered off, the soft magnet 23 loses magnetic force, and the brake plate 24 is separated from the brake lever 19 under the action of the reset force of the brake reset spring 25.
The preheating system is used for preheating the liquid medicine in the liquid storage cavity 10, so that the liquid medicine is preheated to be close to the body temperature (about 37 degrees) of a human body, and the human body is more comfortable in the infusion process. The preheating system is arranged in the preheating cavity 3 and comprises a preheating bottom plate 30, a preheating driving motor 31, a preheating driving screw rod 32, a preheating driving screw nut 33, a preheating driving slide block 34, a preheating plate 35 and a temperature sensor 36. The preheating bottom plate 30 is installed in the preheating cavity 3, preheating installation seats 37 are arranged at two ends of the preheating bottom plate 30, two ends of the preheating driving screw rod 32 are rotatably installed on the preheating installation seats 37, and a preheating chute 38 is arranged in the longitudinal direction of the upper end of the preheating bottom plate 30. The preheating driving motor 31 is a stepping motor, the stepping motor is electrically connected with the control system, the preheating driving motor 31 is installed on the preheating installation seat 37 on one side, and the power output end of the preheating driving motor 31 is connected with the power input end of the preheating driving screw rod 32. The preheating driving screw nut 33 is in threaded connection with the preheating driving screw rod 32, the preheating driving sliding block 34 is installed on the preheating driving screw nut 33, a preheating sliding rail is arranged at the lower end of the preheating driving sliding block 34, and the preheating sliding block is slidably installed in the preheating sliding groove 38. The preheating plate 35 is of a circular structure, the preheating plate 35 is sleeved on the outer side of the liquid storage cavity 10, one side of the preheating plate 35 is connected with the preheating driving sliding block 34 through a connecting frame, a preheating electric control switch is arranged on a power line of the preheating plate 35, and the preheating electric control switch is electrically connected with a control system. The temperature sensor 36 is installed in the liquid storage cavity 10, the temperature sensor 36 is electrically connected with the control system and is used for detecting the temperature of the liquid medicine, and when the temperature exceeds a certain value, the control system disconnects the preheating electric control switch and stops the preheating plate 35 from heating. The control system detects the distance between the front end of the piston 11 and the front end of the liquid storage cavity 10 according to the ultrasonic sensor 16 at the front end of the liquid storage cavity 10, so as to judge the position of the liquid medicine in the liquid storage cavity 10, and further control the preheating driving motor 31 to drive the preheating plate 35 to accurately heat the position of the liquid medicine in the liquid storage cavity 10.
After the injection is finished, the self-cleaning system is used for cleaning the interior of the liquid storage cavity 10 to ensure the cleaning of the interior of the liquid storage cavity 10, and comprises a self-cleaning pump 39, a self-cleaning liquid inlet pipe, a self-cleaning liquid outlet pipe and a cleanliness detector. The self-cleaning cavity 4 is used for containing cleaning liquid (such as clean water), and the self-cleaning cavity 4 is provided with a water inlet valve. The self-cleaning pump 39 is arranged at one side of the self-cleaning cavity 4, the liquid inlet end of the self-cleaning pump 39 is communicated with the self-cleaning cavity 4 through a pipeline, and the liquid outlet port 43 of the self-cleaning pump 39 is communicated with the self-cleaning liquid inlet pipe; the self-purging pump 39 is electrically connected to the control system. In the self-cleaning process, the liquid outlet end of the self-cleaning liquid inlet pipe is communicated with the liquid inlet 18 on the liquid storage cavity 10; the liquid inlet end of the self-cleaning liquid outlet pipe is communicated with a liquid outlet 17 on the liquid storage cavity 10. And the cleanliness detector is communicated with the self-cleaning liquid outlet pipe through a pipeline. The cleanliness detector is electrically connected with the control system and used for detecting whether the cleaned liquid meets the cleanliness requirement, and when the cleaned liquid meets the cleanliness requirement, the self-cleaning pump 39 is stopped by the control system.
The control system comprises a control box 40, and a controller, a control panel and a display which are arranged on the control box 40, wherein the control box 40 is arranged on one side of the pump body 1; the controller is respectively electrically connected with the control panel and the display, and is electrically connected with the detection component and the execution component. The control panel is provided with a plurality of corresponding control keys (such as a start key, a stop key and the like), and the display is used for displaying the working state of the device in real time.
The invention has the advantages that: the device adopts a pneumatic propulsion injection process, and has low noise. The air pressure sensor arranged on the device can detect and ensure that the air pressure is in a controllable interval, and when an accident occurs, the injection system can be stopped to work through the emergency braking system, so that the reliability and the safety are higher. The preheating system arranged in the device can accurately preheat the liquid medicine position, and realizes the controllability of preheating temperature, so that the patient is more comfortable in the injection process. The self-cleaning system in the device can clean the liquid storage cavity, and the cleanness of the device is ensured.
In addition to the technical features described in the specification, the technology is known to those skilled in the art.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and various modifications and variations can be made by those skilled in the art without inventive efforts based on the technical solution of the present invention.
Claims (5)
1. The injection pump is characterized by comprising a pump body, an injection system, an emergency braking system and a control system, wherein an injection cavity and an emergency braking cavity are arranged on the pump body; the injection system comprises a driving pneumatic pump, a resetting pneumatic pump, a driving pneumatic tube, a resetting pneumatic tube and a piston, wherein the piston can be arranged in the injection cavity in a back-and-forth moving mode and divides the injection cavity into a pneumatic cavity and a liquid storage cavity; the driving air pressure pipe and the reset air pressure pipe are respectively communicated with the air pressure cavity, the driving air pressure pipe is provided with an air inlet electric control valve, the reset air pressure pipe is provided with an air outlet electric control valve, and the air inlet electric control valve and the air outlet electric control valve are respectively and electrically connected with the control system; the driving pneumatic pump and the resetting pneumatic pump are respectively arranged on the pump body, the air outlet end of the driving pneumatic pump is communicated with the driving pneumatic pipe, and the air inlet end of the resetting pneumatic pump is communicated with the resetting pneumatic pipe; an air pressure sensor is arranged in the air pressure cavity and is electrically connected with the control system; an ultrasonic sensor is arranged in the liquid storage cavity and is electrically connected with the control system; a liquid outlet and a liquid inlet are arranged on the liquid storage cavity; the emergency braking system comprises a braking rod and an electromagnetic braking mechanism, the rear end of the braking rod is connected with the piston, the front end of the braking rod is positioned in the emergency braking cavity, and one side of the braking rod is provided with a braking convex tooth; a brake mounting plate is arranged in the emergency brake cavity, a brake through hole for passing through a brake rod is arranged on the brake mounting plate, and the electromagnetic brake mechanism is arranged on the brake mounting plate; the electromagnetic braking mechanism comprises a soft magnet, a braking plate and a braking reset spring, wherein the soft magnet is arranged on one side of the braking through hole, a coil is wound outside the soft magnet, the coil is connected with a power supply through a braking electric control switch, and the braking electric control switch is electrically connected with the control system; the brake plate is arranged at the other side of the brake through hole relative to the soft magnet, the rear end of the brake plate is connected with the brake return spring, and the rear end of the brake return spring is arranged on the brake mounting plate through a fixing plate; the front end of the brake plate is provided with a brake clamping plate, the outer end of the brake clamping plate is provided with a brake latch, and the brake latch is arranged corresponding to the brake convex tooth;
the two ends of the brake plate are provided with brake sliding rails, the brake mounting plate is provided with a brake sliding groove, and the brake sliding rails are slidably mounted in the brake sliding groove;
the injection pump also comprises a preheating system, wherein a preheating cavity is arranged on the pump body, and the preheating system is arranged in the preheating cavity; the preheating system comprises a preheating bottom plate, a preheating driving motor, a preheating driving screw rod, a preheating driving screw nut, a preheating driving sliding block, a preheating plate and a temperature sensor, wherein the preheating bottom plate is arranged in the preheating cavity, preheating mounting seats are arranged at two ends of the preheating bottom plate, two ends of the preheating driving screw rod are rotatably arranged on the preheating mounting seats, and a preheating sliding groove is formed in the upper end of the preheating bottom plate in the longitudinal direction; the preheating driving motor is electrically connected with the control system, the preheating driving motor is installed on the preheating installation seat, and the power output end of the preheating driving motor is connected with the power input end of the preheating driving screw rod; the preheating driving screw nut is in threaded connection with the preheating driving screw rod, the preheating driving sliding block is installed on the preheating driving screw nut, a preheating sliding rail is arranged at the lower end of the preheating driving sliding block, and the preheating sliding block is installed in the preheating sliding groove in a sliding mode; the preheating plate is positioned at the outer side of the liquid storage cavity, one side of the preheating plate is connected with the preheating driving sliding block through a connecting frame, a preheating electric control switch is arranged on a power line of the preheating plate, and the preheating electric control switch is electrically connected with a control system; the temperature sensor is arranged in the liquid storage cavity and is electrically connected with the control system.
2. A syringe pump according to claim 1, wherein said soft magnet is of U-shaped configuration.
3. The syringe pump of claim 1 wherein said pre-heat drive motor is a stepper motor.
4. The syringe pump of claim 1 wherein said pre-heater plate is a circular ring and is disposed outside of said reservoir.
5. The syringe pump of claim 1, wherein the syringe pump further comprises a self-cleaning system, and the pump body is provided with a self-cleaning chamber; the self-cleaning system comprises a self-cleaning pump, a self-cleaning liquid inlet pipe, a self-cleaning liquid outlet pipe and a cleanliness detector, wherein a cleaning liquid is contained in the self-cleaning cavity; the self-cleaning pump is electrically connected with the control system; the liquid outlet end of the self-cleaning liquid inlet pipe is communicated with a liquid inlet on the liquid storage cavity, and the liquid inlet end of the self-cleaning liquid outlet pipe is communicated with a liquid outlet on the liquid storage cavity; the cleanliness detector is communicated with the self-cleaning liquid outlet pipe through a pipeline and is electrically connected with the control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710799989.0A CN107485762B (en) | 2017-09-07 | 2017-09-07 | Injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710799989.0A CN107485762B (en) | 2017-09-07 | 2017-09-07 | Injection pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107485762A CN107485762A (en) | 2017-12-19 |
| CN107485762B true CN107485762B (en) | 2020-09-01 |
Family
ID=60652487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710799989.0A Active CN107485762B (en) | 2017-09-07 | 2017-09-07 | Injection pump |
Country Status (1)
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| CN108380602B (en) * | 2018-02-02 | 2020-11-10 | 武汉华星光电技术有限公司 | Injection pump cleaning equipment and method and injection pump |
| CN108969814B (en) * | 2018-07-09 | 2020-10-30 | 青岛大学附属医院 | Multifunctional medical negative pressure drainage device |
| CN110368312A (en) * | 2019-07-26 | 2019-10-25 | 张士俊 | A kind of liquid food syringe Electric assist device |
| CN111174633B (en) * | 2020-01-13 | 2021-06-25 | 绍兴林玖机械科技有限公司 | Self-descaling electric water heater |
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