CN110975059A - Linear peristaltic nutrition pump and using method thereof - Google Patents
Linear peristaltic nutrition pump and using method thereof Download PDFInfo
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- CN110975059A CN110975059A CN201911351536.7A CN201911351536A CN110975059A CN 110975059 A CN110975059 A CN 110975059A CN 201911351536 A CN201911351536 A CN 201911351536A CN 110975059 A CN110975059 A CN 110975059A
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- nutrition
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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
- A61M5/14228—Pumping with an aspiration and an expulsion action with linear peristaltic action, i.e. comprising at least three pressurising members or a helical member
-
- 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
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16804—Flow controllers
-
- 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
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16831—Monitoring, detecting, signalling or eliminating infusion flow anomalies
-
- 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
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16877—Adjusting flow; Devices for setting a flow rate
-
- 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
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16886—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body for measuring fluid flow rate, i.e. flowmeters
-
- 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
- A61M5/36—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 with means for eliminating or preventing injection or infusion of air into body
- A61M5/365—Air detectors
-
- 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
- A61M5/445—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 the media being heated in the reservoir, e.g. warming bloodbags
-
- 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
- A61M2230/00—Measuring parameters of the user
- A61M2230/30—Blood pressure
Abstract
The invention discloses a linear peristaltic nutrition pump, which comprises a display unit, a power unit, a nutrition pump translation pressure pipe device and a control unit, wherein the display unit is used for displaying the display unit; the display unit is arranged at the upper part of the nutrition pump and comprises a display screen and a matrix keyboard; the power unit is arranged in the middle of the nutrition pump and comprises a driving motor, a cam shaft seat, a cam square shaft, a driving gear, a transmission gear and a belt; the nutrition pump translation pressure pipe device is arranged in front of the power unit and connected with the power unit, and comprises a tower spring; the control unit comprises a commercial power socket, a battery, an integrated circuit board and a controller, and also discloses a use method, the invention has simple structure, convenient and fast installation of parts, 50% lower price than other products, 80% lower cost of consumable materials, and uniform and gentle force channel applied when the translational pressure pipe device extrudes the pipeline, does not damage nutrient components in the infusion, can be matched with most infusion pipes in the market, greatly reduces the infusion cost, and improves the product compatibility.
Description
Technical Field
The invention relates to the technical field of medical infusion equipment, in particular to a linear peristaltic nutrition pump and a using method thereof.
Background
At present, a rotary shaft type pressure pipe device is used in a domestic nutrition pump, infusion is spirally arranged in the pressure pipe device by means of three fan blade devices, and an infusion pipeline is scraped like a fan so as to deliver nutrient solution to the body of a patient. The nutrition pump has the advantages that special consumables must be used due to the problem of a transmission mode, and the special consumables are easy to wear and cause high cost. Secondly, the structure of control infusion velocity of flow includes the motor and presses the pipe device, nutrition pump pressure pipe device among the prior art is equipped with rectangular recess on nutrition pump door, and be equipped with the connecting hole on the long slot wall of rectangular recess, be equipped with the apron in the rectangular recess, the apron both ends are respectively through fastening locating part fastening in the rectangular recess, with the help of connecting hole position fixed connection axle on the apron, be equipped with resilient means in the apron, this type presses pipe device structure complicated, the part installation is difficult, and because the scraping of flabellum makes the pipeline atress big, the friction is serious, even cover the silica gel protective sheath on special consumptive material, very big increase the cost not mentioned, still serious to the loss of transfusion system.
Disclosure of Invention
Aiming at the problems, the invention provides a linear peristaltic nutrition pump and a using method thereof, which mainly solve the problems in the background technology.
The invention provides a linear peristaltic nutrition pump, which comprises a display unit, a power unit, a nutrition pump translation pressure pipe device and a control unit, wherein the display unit is used for displaying the display unit;
the display unit is arranged at the upper part of the nutrition pump and comprises a display screen and a matrix keyboard, the display screen is used for displaying the infusion set gauge of the nutrition pump and the infusion mode of the nutrition pump, and the matrix keyboard is used for selecting the infusion mode of the nutrition pump and the gauge selection of the infusion set;
the power unit is arranged in the middle of the nutrition pump and comprises a driving motor, a cam shaft seat, a cam square shaft, a driving gear, a transmission gear and a belt, the driving motor is fixed on a mounting foot plate which is arranged on the front shell of the nutrition pump, a driving gear is fixedly arranged on an output shaft of the driving motor, three positioning holes are arranged on the cam shaft seat, the camshaft seat is fixed on the front shell of the nutrition pump through the three positioning holes, the two side surfaces of the camshaft seat are provided with circular holes, bearings are respectively arranged in the round holes, the cam square shaft is arranged in the cam shaft seat through the bearings, a cam is arranged on the cam square shaft, a pump sheet is sleeved on the cam, the extending end of the cam square shaft penetrates through the cam shaft seat and is fixedly provided with a driven gear, the driving gear drives the driven gear through the belt so as to drive the cam square shaft to rotate;
the nutrition pump translation pressure pipe device is arranged in front of the power unit and connected with the power unit, the nutrition pump translation pressure pipe device comprises a tower spring, the tower spring is arranged in a tower spring pressing plate and fixed on a shifting fork through screws, the tower spring pressing plate is fixedly arranged in a damping pit on the side face of a door plate, the shifting fork and the door plate are arranged on the camshaft seat through a door shaft, the door plate and the pump piece are arranged oppositely, a channel capable of containing a transfusion pipeline is arranged between the door plate and the pump piece, and a liquid stop gate plate, a bubble sensor and a pressure sensor are sequentially arranged in the channel from left to right;
the heating device, the driving motor, the display screen, the matrix keyboard, the pressure sensor and the bubble sensor are electrically connected with the controller respectively.
The improved door structure is characterized in that a clamping hook is arranged at the upper end of the damping pit, a door lock sliding key is arranged at the position, corresponding to the clamping hook, of the door plate, the door lock sliding key is fixed on the door plate through a sliding key pin, one end of a door opening ejector rod penetrates through the side face of the door lock sliding key and tightly pushes against the clamping hook, a door opening shifting block is arranged at the other end of the door opening ejector rod, and the door opening shifting block is pressed to push open the clamping hook so as to open the door plate.
The further improvement is that the number of the cams is 12, and the pump sheets arranged on the cams do the wave-shaped motion of back and forth swing.
In a further improvement, the infusion modes of the infusion pump include at least one of the following modes: volume mode, time mode, weight mode, intermittent mode, hour mode, drop count mode, and enteral mode.
In a further refinement, the keys of the matrix keyboard comprise at least one of: number keys 0-9, power on/power off key, start/confirm key, stop/change key, secondary/fast push key.
The tower spring is integrally formed, is integrally in a three-arch bridge type symmetrical structure and comprises a rib top, wherein the rib top is positioned at the highest bulge in the middle of the tower spring, the shapes of the two sides of the rib top are matched with the damping pits, and tower shoulders with ascending symmetry are arranged on the two sides of the tower spring.
The tower spring is further improved in that the tower spring is made of steel through sintering, casting, heat treatment and rust prevention treatment.
The further improvement is that the tower spring is 60Si2Mn spring steel.
The further improvement is that the processing technology of the heat treatment comprises the quenching temperature of 870 +/-20 ℃, the oil cooling, the tempering temperature of 480 +/-50 ℃, the spheroidizing annealing of 850 ℃ and the oil cooling quenching.
The further improvement is that the rust prevention treatment is to spray a chemical protective layer on the surface of the tower spring by adopting rust prevention grease.
The improvement is that the heating device comprises a silicone tube and a thermistor, the inner diameter of the silicone tube is matched with the outer diameter of the infusion pipeline, the silicone tube is arranged on a channel for placing the infusion pipeline, a heat insulating layer is arranged on the silicone tube outer ring, a carbon fiber heating wire is arranged between the silicone tube and the heat insulating layer, and the controller controls the heating device to be started and closed.
The invention also provides a using method of the linear peristaltic nutrition pump, which comprises the following steps:
s1, clicking a start key to enable the nutrition pump to enter a working state, and displaying the last used infusion set gauge and the working mode on the display screen;
s2, confirming whether the used infusion set gauge is the same as the last infusion set gauge, and clicking a confirmation key to select if the used infusion set gauge is the same as the last infusion set gauge; if the infusion set is different, the product format of the infusion set is adjusted by clicking a selection key;
s3, pressing the door opening shifting block, opening the door panel, placing an infusion pipeline on the channel according to the left-in and right-out sequence, sleeving the heating device on the infusion pipeline, straightening the infusion pipeline and closing the door panel;
and S4, selecting a proper working mode, typing in the infusion volume, the infusion rate and the warming temperature through the number keys, and clicking the start key to start infusion.
The further improvement is that the temperature range of the heating temperature is 40-43 ℃.
Compared with the prior art, the invention has the beneficial effects that:
1. the translational pressure pipe device is simple in structure, convenient and fast to install parts, capable of reducing the price by 50% compared with other products, capable of reducing the material consumption cost by 80%, capable of enabling a force channel applied when the translational pressure pipe device extrudes a pipeline to be gentle and uniform, free of damage to nutritional ingredients in infusion, capable of being matched with most infusion pipes in the market, capable of greatly reducing the infusion cost and capable of improving the product compatibility;
2. the invention adopts a high-specification and high-precision tower spring structure and adopts a unique front and back wave type swinging propelling pump sheet to replace the traditional rotating shaft type fan blade to scrape the infusion pipeline, thereby greatly reducing the loss of infusion consumables and ensuring the long-time, high-precision and high-quality infusion of the nutrition pump;
3. the infusion speed regulation device also has an agile speed regulation function, under the condition of normal infusion, if doctors and nurses want to regulate the infusion speed, the speed regulation device can directly modify the speed through the keys without pausing, the speed regulation range is wide (the regulation can be carried out within the range of 0.1-6000 ml/h), and the potential safety hazard caused by forced pausing of the infusion when the infusion speed is regulated is greatly reduced;
4. the linear peristaltic nutrition pump can also keep the transfusion precision of intravenous administration at low flow rate, so that the nutrition pump can also be suitable for occasions such as low-speed transfusion for children and the like, has small and exquisite appearance, is convenient to carry, is quite suitable for the emergency situation of outdoor emergency intravenous transfusion, and also greatly improves the practicability of the nutrition pump;
5. the heating device provided by the invention adopts an external heating device to replace the traditional method that a heating instrument is additionally arranged for heating, and can be used for heating the infusion pipeline in a fully-surrounding manner, so that the comfort degree of a patient can be improved, the recovery of the patient can be promoted, and great convenience is provided for medical care.
Drawings
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
FIG. 1 is a schematic front perspective view of an embodiment of the present invention;
FIG. 2 is a schematic rear perspective view of an embodiment of the present invention;
FIG. 3 is a schematic structural view of a translational pipe crimping apparatus according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of a translational crimp apparatus according to another embodiment of the present invention;
FIG. 5 is a schematic perspective view of a power unit according to an embodiment of the present invention;
FIG. 6 is a schematic view of the position of the tower spring and the tower spring pressing plate according to an embodiment of the present invention;
FIG. 7 is a schematic perspective view of a tower spring according to an embodiment of the present invention;
wherein: 1. a display screen; 2. a matrix keyboard; 3. a door panel; 4. a liquid stop shutter; 5. a bubble sensor; 6. a pump sheet; 7. a door hook; 8. a pressure sensor; 9. a door opening shifting block; 10. a door shaft; 11. a shifting fork; 12. a tower spring; 13. a cover plate; 14. a drive motor; 15. a camshaft seat; 16. a cam square shaft; 17. a driven gear; 18. a belt; 19. a rib top; 20. a tower shoulder.
Detailed Description
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, so to speak, as communicating between the two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
Referring to fig. 1-7, a linear peristaltic nutrition pump comprises a display unit, a power unit, a nutrition pump translation pressure pipe device and a control unit;
the display unit is arranged at the upper part of the nutrition pump and comprises a display screen 1 and a matrix keyboard 2, the display screen 1 is used for displaying an infusion apparatus gauge of the nutrition pump and an infusion mode of the nutrition pump, and the matrix keyboard 2 is used for adjusting and controlling the infusion mode of the nutrition pump and selection of the infusion apparatus gauge;
the power unit is arranged in the middle of the nutrition pump and comprises a driving motor 14, a cam shaft seat 15, a cam square shaft 16, a driving gear, a transmission gear and a belt 18, the driving motor 14 is fixed on a mounting foot plate, the mounting foot plate is arranged on a front shell of the nutrition pump, the driving gear is fixedly mounted on an output shaft of the driving motor 14, three positioning holes are formed in the cam shaft seat 15, the cam shaft seat 15 is fixed on the front shell of the nutrition pump through the three positioning holes, circular holes are formed in two side faces of the cam shaft seat 15, bearings are respectively mounted in the circular holes, the cam square shaft 16 and the bearings are matched and arranged in the cam shaft seat 15, a cam is sequentially mounted on the cam square shaft 16, a pump sheet 6 is sleeved on the cam, and the extending end of the cam square shaft 16 extends out of one side face of the cam shaft seat 15, the extended end of the cam square shaft 16 is fixedly provided with the driven gear 17, and the driving gear drives the driven gear 17 through the belt 18 so as to drive the cam square shaft 16 to rotate;
the nutrition pump translation pressure pipe device is arranged in front of the power unit and connected with the power unit, the nutrition pump translation pressure pipe device comprises a tower spring 12, the tower spring 12 is installed inside a tower spring 12 pressing plate in a matching mode, the tower spring 12 is fixed on a shifting fork 11 through screws, the tower spring 12 pressing plate is fixedly installed in a damping pit on the side face of a door plate 3, the shifting fork 11 and the door plate 3 are installed on a cam shaft seat 15 through a door shaft 10, the door plate 3 is arranged opposite to the pump sheet 6, a channel capable of containing a transfusion pipeline is arranged between the door plate 3 and the pump sheet 6, and a liquid stop gate plate 4, a bubble sensor 5 and a pressure sensor 8 are sequentially arranged on the channel from left to right;
the heating device, the driving motor 14, the display screen 1, the matrix keyboard 2, the pressure sensor 8 and the bubble sensor 5 are respectively and electrically connected with the controller through an integrated circuit board.
It is understood that referring to fig. 1 and 2, in the embodiment of the present invention, the linear peristaltic nutrition pump further comprises a front housing, a rear housing, an infusion chamber for filling the infusion pipeline, and a door plate 3 for closing the infusion chamber, the transfusion cavity is arranged in the lower side of the front shell, the door plate 3 is just capable of closing the transfusion cavity, the nutrition pump translation pressure pipe device is arranged in the transfusion cavity, the rear part of the transfusion cavity, namely, the power unit is arranged in the rear shell and used for providing a power source for the nutrition pump translation pressure pipe device, the display unit is provided at an upper portion of the front case, the control unit is not particularly limited in its position in the embodiment of the present invention, the control unit only needs to be electrically connected with other units and devices, and the integrated circuit board can radiate the work of other units.
It can be understood that, referring to fig. 1, in the embodiment of the present invention, the display screen 1 of the display unit may be a resistive touch screen, a capacitive touch screen, a pressure-sensitive touch screen, or a common non-touch liquid crystal display screen 1, and the matrix keyboard 2 may be a virtual keyboard or a physical keyboard.
It can be understood that, referring to fig. 3 and 4, in the embodiment of the present invention, the nutrition pump translation pressure tube device is integrally disposed in the infusion cavity, and a liquid stop shutter 4, a bubble sensor 5, a tower spring 12 and a pressure sensor 8 are sequentially disposed therein from left to right, the liquid stop shutter 4 controls the ingress and egress of blood, and the transportation of nutrition liquid is stopped when the liquid stop shutter 4 falls down and presses against the infusion tube; in the embodiment of the present invention, the bubble sensor 5 may continuously monitor the fluid and detect bubbles therein by a non-invasive method, and in the embodiment of the present invention, the bubble sensor 5 may utilize an ultrasonic technology to identify whether there is a flow interruption in the nutrient solution, and correspondingly, if the bubble sensor 5 detects that there is a flow interruption in the nutrient solution, information may be transmitted to the controller through the integrated circuit board, and the controller prompts through the display unit, or alternatively, an early warning device may be additionally provided, so that the controller may early warn a user when receiving an abnormal infusion; the pressure sensor 8 can detect the blood pressure in the infusion process in real time, the controller is used for further measuring and calculating the infusion speed of the nutrient solution, and the nutrient solution is displayed through the display unit; referring to fig. 6, the tower spring 12 structure replaces four column springs in the prior art, the existing limiting mechanism is cancelled, the traditional hydraulic transmission pipe device is simplified, and the tower spring 12 adopted in the embodiment of the invention changes the swing effect of the original column spring, even if any one position is stressed, the whole stressed surface can integrally act, so that the tower spring 12 can be always kept on a horizontal plane, the stress of the infusion pipeline is uniform, the deformation of the whole pipeline is small, and the output flow rate of the nutrition pump and the infusion precision under long-time work can be ensured; and will tower spring 12 clamp plate set up in the shock attenuation pit, can reduce the whole volume of device on the one hand, can play certain shock attenuation buffering guard action to tower spring 12 on the one hand in transportation or under other circumstances, the suit that the heating apparatus can be movable is in heat for the nutrient solution on the transfer line.
It can be understood that, referring to fig. 5, in the embodiment of the present invention, the output shaft of the driving motor 14 drives the driving gear, further drives the belt 18, further drives the driven gear 17 and the cam square shaft 16 to rotate, the on/off and output frequency of the driving motor 14 are controlled by the controller, and the battery of the control unit can provide power for the motor to continuously provide power for the pump blade 6. Specifically, a signal plate can be installed at one end of the cam square shaft 16 where the driven gear 17 is installed, and the real-time rotating speed of the driving motor 14 is tested in real time through optical coupling.
Referring to fig. 3 and 4, as a preferred embodiment of the present invention, a hook is disposed at an upper end of the damping pit, a door lock sliding key is disposed at a position of the door panel 3 corresponding to the hook, the door lock sliding key is fixed on the door panel 3 through the sliding key pin, one end of a door opening push rod penetrates through a side surface of the door lock sliding key to tightly push the hook, and the other end of the door opening push rod is provided with a door opening shifting block 9, and the hook is pushed open by pressing the door opening shifting block 9 to open the door panel 3.
In a preferred embodiment of the present invention, the number of the cams is 12, and the moving direction of the pump blade 6 mounted on the cams is a wave-like motion of swinging back and forth.
It can be understood that, referring to fig. 4 and 5, in the embodiment of the present invention, 12 cams are arranged on the cam square shaft 16, and the pump blade 6 is correspondingly arranged on the cams, so that the pump blade 6 is in a wave-shaped motion manner of swinging back and forth, which can make the force applied by the pump blade 6 to the infusion pipeline uniform and gentle, and continuously pump the nutrient solution forward, and through the swinging back and forth motion, the pump blade 6 can be always kept on a relatively gentle horizontal plane, the infusion pipeline is uniformly stressed, the deformation of the whole pipeline is small, and the output flow rate of the nutrient pump and the infusion precision under long-time operation can be ensured.
As a preferred embodiment of the present invention, the infusion mode of the infusion pump includes at least one of the following modes: volume mode, time mode, weight mode, intermittent mode, hour mode, drop count mode, and enteral mode.
As a preferred embodiment of the present invention, the keys of the matrix keyboard 2 include at least one of: number keys 0-9, power on/power off key, start/confirm key, stop/change key, secondary/fast push key.
As a preferred embodiment of the present invention, the tower spring 12 is integrally formed, and has a three-arch bridge-type symmetrical structure as a whole, and includes a rib top 19, the rib top 19 is located at the highest projection in the middle of the tower spring 12, the shapes of both sides of the rib top 19 are matched with the shock absorption pits, and tower shoulders with equal height symmetry are disposed on both sides of the tower spring 12. 20
It can be understood that, in the embodiment of the present invention, the tower spring 12 has a three-arch bridge-type symmetrical structure, the middle arch is the rib top 19 and is located at the highest projection in the middle of the tower spring 12, the two symmetrical arches are the tower shoulders, the design of the tower spring 12 and the shape of the shock absorption pit are in complementary fit, so that the tower spring 12 can perfectly fit the shock absorption pit, and different from the conventional column spring structure when pumping into the infusion pipeline, the tower spring 12 can be always kept on a horizontal plane, the infusion pipeline is uniformly stressed, the overall pipeline deformation is small, and the output flow rate of the nutrition pump and the infusion precision under long-time operation can be ensured.
In a preferred embodiment of the present invention, the tower spring 12 is made of a steel material through a sintering molding process, a heat treatment process and an anti-rust process.
In a preferred embodiment of the present invention, the tower spring 12 is 60Si2Mn spring steel.
It is understood that in the embodiment of the present invention, the tower spring 12 is made of silicon manganese spring steel 60Si2Mn, which has good elasticity, strength and hardenability, can bear a large pressure load, has excellent processability, and can provide sufficient hardness and strength after processing.
As a preferred embodiment of the invention, the heat treatment process comprises the steps of quenching temperature of 870 +/-20 ℃, oil cooling, tempering temperature of 480 +/-50 ℃, spheroidizing annealing of 850 ℃ and oil cooling quenching.
It can be understood that in the embodiment of the invention, the specific steps of the heat treatment are that the quenching temperature is 870 ℃ +/-20 ℃ (the quenching temperature of the 60Si2Mn steel is normally 850 ℃ to 870 ℃), and oil cooling is carried out; then tempering at 480 +/-50 ℃ (480 +/-30 ℃ can be realized when special needs exist); wherein the heat treatment step also comprises spheroidizing annealing, wherein the spheroidizing annealing is firstly heated at 850 ℃, then oil cooling quenching is carried out, finally a short-time isothermal spheroidizing process is adopted, namely heating is carried out for 25 minutes at 800 +/-10 ℃, quenching is carried out to 700 +/-10 ℃, heat preservation is carried out for 1H, furnace cooling is carried out at the speed of 30-50 ℃/H to 600 ℃, and discharging is carried out, so that an ideal spheroidized tissue can be obtained. The tempering temperature is selected according to the hardness requirement of the die part, namely the hardness of the die part is 46HRC, the temperature is set to 400 ℃, the hardness of the die part is 40HRC, the temperature is set to 500 ℃, the hardness of the die part is 34HRC, the temperature is set to 600 ℃, a tempering brittleness area of about 270 ℃ and about 330 ℃ is avoided, and the tower spring 12 is required to have higher toughness and good dimensional stability, the tempering temperature is controlled to about 250 ℃, and the hardness is 45-55 HRC.
In a preferred embodiment of the present invention, the rust-proof treatment is to spray a chemical protective layer on the surface of the tower spring 12 with rust-proof grease.
It can be understood that, in the embodiment of the present invention, the rust-proof treatment uses water-soluble rust-proof grease, the water-soluble rust-proof oil using water as a solvent does not contain substances harmful to human bodies, such as aromatic hydrocarbons, lead, and the like, and no three wastes are discharged in the production, because the volume of the tower spring 12 itself is small, a dip-coating mode can be used, the surface cleaning is performed after the heat treatment, the tower spring is soaked in the rust-proof oil at normal temperature for 12 hours and then taken out for drying, the rust-proof oil is relatively thick and needs to be heated to a certain temperature, the rust-proof oil is in a flowing liquid state, and the rust-proof process avoids the defects of a chemical corrosion method and a metal protection film method in the.
It can be understood that, referring to fig. 7, in the embodiment of the present invention, on the premise that the tower spring 12 maintains the hardness after processing, the service life of the tower spring 12 is greatly increased, and the service life of the tower spring 12 can be ensured to reach more than 5 years under the conditions of high strength and full load (the limit value is that the uninterrupted operation can be performed at a flow rate of 5000 ml/h).
As a preferred embodiment of the present invention, the heating device includes a silicone tube and a thermistor, an inner diameter of the silicone tube matches an outer diameter of the infusion pipeline, the silicone tube is disposed on the channel for placing the infusion pipeline, a heat insulating layer is disposed on an outer ring of the silicone tube, a carbon fiber heating wire and the thermistor are disposed between the silicone tube and the heat insulating layer, the thermistor and the carbon fiber heating wire are electrically connected to the controller, and the controller controls the heating device to be turned on and off.
It can be understood that, in the embodiment of the present invention, the inner diameter of the silicone tube should be slightly larger than the outer diameter of the infusion pipeline, so as to prevent the silicone tube from being damaged due to the overheat temperature directly contacting the infusion pipeline, the silicone tube is disposed on the channel of the infusion pipeline, when in use, the infusion pipeline only needs to be inserted into the silicone tube, the controller controls the carbon fiber heating wire to heat and raise the temperature, so as to micro-heat the nutrient solution in the infusion pipeline, keep the nutrient solution to be delivered to the human body at a more appropriate temperature, and promote the recovery of the patient, specifically, the silicone tube is further provided with a plurality of thermistors, so as to monitor the heating temperature of the silicone tube in real time, prevent the temperature from exceeding the heating temperature range due to the excessive heat release of the carbon fiber, feed the temperature information back to the controller, and be controlled by the controller, so that the heating device of the present invention can greatly improve the accuracy of the temperature of, the heat insulation layer is arranged on the outer ring of the silica gel tube, and is made of heat insulation materials, so that the heating device can be prevented from influencing other components, and the safety of the heating device is enhanced.
And a method of using the linear peristaltic nutrition pump, comprising the steps of:
s1, clicking a start key to enable the nutrition pump to enter a working state, and displaying the last-used infusion set gauge and a working mode on the display screen 1;
s2, confirming whether the used infusion set gauge is the same as the last infusion set gauge, and clicking a confirmation key to select if the used infusion set gauge is the same as the last infusion set gauge; if the infusion set is different, the product format of the infusion set is adjusted by clicking a selection key;
s3, pressing the door opening shifting block 9, opening the door panel 3, placing an infusion pipeline on the channel according to the sequence of left-in and right-out, sleeving the heating device on the infusion pipeline, straightening the infusion pipeline and combining the door panel 3;
and S4, selecting a proper working mode, typing in the infusion volume, the infusion rate and the warming temperature through the number keys, and clicking the start key to start infusion.
As a preferred embodiment of the invention, the temperature range of the heating temperature is 40-43 ℃, and the temperature of the body temperature of the human body is closely related to the immunity of the human body, so that the proper temperature of the nutrient solution can not only provide comfortable treatment feeling for the patient, but also promote the recovery and fitness of the patient. The default heating temperature range of the nutrition pump is 40-43 ℃, wherein the effect is optimal when the heating temperature is regulated to 41 ℃, and the use safety of hospitals and patients is ensured by the double temperature control technology of temperature control of the heating body and temperature control of liquid flowing out of the heating body by the stabilizing device.
In the drawings, the positional relationship is described for illustrative purposes only and is not to be construed as limiting the present patent; it should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A linear peristaltic nutrition pump is characterized by comprising a display unit, a power unit, a nutrition pump translation pressure pipe device and a control unit;
the display unit is arranged at the upper part of the nutrition pump and comprises a display screen (1) and a matrix keyboard (2), the display screen (1) is used for displaying an infusion apparatus standard of the nutrition pump and an infusion mode of the nutrition pump, and the matrix keyboard (2) is used for selecting the infusion mode of the nutrition pump and the standard selection of the infusion apparatus;
the power unit is arranged in the middle of the nutrition pump and comprises a driving motor (14), a cam shaft seat (15), a cam square shaft (16), a driving gear, a transmission gear and a belt (18), the driving motor (14) is fixed on an installation foot plate, the installation foot plate is arranged on a front shell of the nutrition pump, the driving gear is fixedly arranged on an output shaft of the driving motor (14), three positioning holes are formed in the cam shaft seat (15), the cam shaft seat (15) is fixed on the front shell of the nutrition pump through the three positioning holes, circular holes are formed in two side faces of the cam shaft seat (15), bearings are respectively arranged in the circular holes, the cam square shaft (16) is arranged in the cam shaft seat (15) through the bearings, a cam is arranged on the cam square shaft (16), and a pump sheet (6) is sleeved on the cam, the extension end of the cam square shaft (16) penetrates through the cam shaft seat (15) and is fixedly provided with a driven gear (17), and the driving gear drives the driven gear (17) through the belt (18) so as to drive the cam square shaft (16) to rotate;
the nutrition pump translation pressure pipe device is arranged in front of the power unit and connected with the power unit, the nutrition pump translation pressure pipe device comprises a tower spring (12), the tower spring (12) is arranged inside a tower spring pressing plate, the tower spring (12) is fixed on a shifting fork (11) through screws, the tower spring pressing plate is fixedly arranged in a damping pit on the side face of a door plate (3), the shifting fork (11) and the door plate (3) are arranged on a cam shaft seat (15) through a door shaft (10), the door plate (3) is arranged opposite to the pump blade (6), a channel capable of placing a transfusion pipeline is arranged between the door plate (3) and the pump blade (6), and a liquid stop gate plate (4), a bubble sensor (5) and a pressure sensor (8) are sequentially arranged in the channel from left to right;
the heating device, the driving motor (14), the display screen (1), the matrix keyboard (2), the pressure sensor (8) and the bubble sensor (5) are electrically connected with the controller respectively.
2. The linear peristaltic nutrition pump as claimed in claim 1, wherein a hook is arranged at the upper end of the damping pit, a door lock sliding key is arranged at a position of the door plate (3) corresponding to the hook, the door lock sliding key is fixed on the door plate (3) through the sliding key pin, one end of a door opening ejector rod penetrates through the side surface of the door lock sliding key and tightly abuts against the hook, a door opening shifting block (9) is arranged at the other end of the door opening ejector rod, and the hook is pushed open by pressing the door opening shifting block (9) so as to open the door plate (3).
3. The linear peristaltic nutrition pump according to claim 1, wherein the number of cams is 12, and the pump blades (6) mounted on the cams make a wave-like motion of swinging back and forth.
4. The linear peristaltic nutrition pump of claim 1, wherein the infusion mode of the infusion pump includes at least one of: volume mode, time mode, weight mode, intermittent mode, hour mode, drop count mode, and enteral mode.
5. Linear peristaltic nutrition pump according to claim 1, characterized in that the keys of the matrix keyboard (2) comprise at least one of the following: number keys 0-9, power on/power off key, start/confirm key, stop/change key, secondary/fast push key.
6. The linear peristaltic nutrition pump as claimed in claim 1, wherein the tower spring (12) is integrally formed, and integrally presents a three-arch bridge type symmetrical structure, and comprises a rib top (19), the rib top (19) is located at the highest projection in the middle of the tower spring (12), the two sides of the rib top (19) are matched with the shock absorption pits in shape, and tower shoulders (20) with ascending symmetry are arranged at the two sides of the tower spring (12).
7. The linear peristaltic nutrition pump as set forth in claim 6, wherein the tower spring (12) is made of steel through sintering, heat treatment and rust prevention treatment, the tower spring (12) is made of 60Si2Mn spring steel, and the rust prevention treatment is a chemical protective layer sprayed on the surface of the tower spring (12) by using rust prevention grease.
8. The linear peristaltic nutrition pump according to claim 1, wherein the heating device comprises a silicone tube and a thermistor, the inner diameter of the silicone tube is matched with the outer diameter of the infusion pipeline, the silicone tube is arranged on the channel for placing the infusion pipeline, a heat insulating layer is arranged on the outer ring of the silicone tube, a carbon fiber heating wire and the thermistor are arranged between the silicone tube and the heat insulating layer, and the controller controls the heating device to be started and stopped.
9. A method of using a linear peristaltic nutrition pump as claimed in claims 1-8, comprising the steps of:
s1, clicking a start key to enable the nutrition pump to enter a working state, and displaying the last used infusion set gauge and a working mode on the display screen (1);
s2, confirming whether the used infusion set gauge is the same as the last infusion set gauge, and clicking a confirmation key to select if the used infusion set gauge is the same as the last infusion set gauge; if the infusion set is different, the product format of the infusion set is adjusted by clicking a selection key;
s3, pressing the door opening shifting block (9), opening the door panel (3), placing an infusion pipeline on the channel according to the left-in and right-out sequence, sleeving the heating device on the infusion pipeline, straightening the infusion pipeline and closing the door panel (3);
and S4, selecting a proper working mode, typing in the infusion volume, the infusion rate and the warming temperature through the number keys, and clicking the start key to start infusion.
10. Use of a linear peristaltic nutrition pump according to claim 9, wherein the warming temperature is in the temperature interval 40 ℃ to 43 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911351536.7A CN110975059A (en) | 2019-12-25 | 2019-12-25 | Linear peristaltic nutrition pump and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911351536.7A CN110975059A (en) | 2019-12-25 | 2019-12-25 | Linear peristaltic nutrition pump and using method thereof |
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| CN110975059A true CN110975059A (en) | 2020-04-10 |
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| CN201911351536.7A Pending CN110975059A (en) | 2019-12-25 | 2019-12-25 | Linear peristaltic nutrition pump and using method thereof |
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| US20120203198A1 (en) * | 2011-02-09 | 2012-08-09 | Searle Gary M | Nighttime Basal Dosing Device |
| US9883834B2 (en) * | 2012-04-16 | 2018-02-06 | Farid Amirouche | Medication delivery device with multi-reservoir cartridge system and related methods of use |
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