CN202605422U - Infusion pump with function of preventing peristaltic pump reversal - Google Patents
Infusion pump with function of preventing peristaltic pump reversal Download PDFInfo
- Publication number
- CN202605422U CN202605422U CN 201220016483 CN201220016483U CN202605422U CN 202605422 U CN202605422 U CN 202605422U CN 201220016483 CN201220016483 CN 201220016483 CN 201220016483 U CN201220016483 U CN 201220016483U CN 202605422 U CN202605422 U CN 202605422U
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- pump
- peristaltic pump
- motor
- magnet
- infusion pump
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Abstract
The utility model discloses an infusion pump with a function of preventing peristaltic pump reversal. The infusion pump includes a pump body, a peristaltic pump, a motor and a control mechanism. The peristaltic pump is arranged in the pump body of the infusion pump. The peristaltic pump is provided with a drive shaft and a plurality of peristaltic slide blocks which are serially disposed on the drive shaft. The drive shaft of the peristaltic pump is connected with the output shaft of the motor. The drive shaft is driven by the motor for synchronous rotation. The control mechanism can control the movement of the motor. At least three magnets are fixed according to a certain angle unevenly on a same circumference on the end face of the peristaltic pump drive shaft. The control mechanism includes a hall sensor and a signal processing circuit. The hall sensor is in electric connection with the signal processing circuit. The hall sensor is installed in the pump body. The installation position of the hall sensor corresponds to the position of the magnets. The infusion pump is simple in structure and low in cost, can judge the rotation direction of the peristaltic pump, and has the function of preventing the peristaltic pump reversal.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, specifically is meant a kind of infusion pump that prevents the peristaltic pump reverse function that has.
Background technology
Infusion pump is a kind of safety can be provided, reliably and accurately control the medical apparatus and instruments of venous transfusion.Compare with traditional gravity transfusion, use the infusion pump transfusion can realize the function that traditional gravity transfusion does not have:
The flow velocity that (1) improves administration and volume control precision (as＜± 5%), expansion administration flow rates is (like 0.1ml/h～1200ml/h);
(2) utilize infusion pump prompt operation function (like quick speed governing) to reach quick adjustment flow velocity and the purpose of striving for rescue opportunity;
(3) utilize the historical information memory function of infusion pump to reach the purpose of regulating the dispute of medical care trouble;
(4) utilize the built-in or external temperature function that adds to reach the purpose that improves the transfusion comfortableness, reduces medicinal liquid seepage probability;
(5) utilize infusion pump various warning functions (as pipeline bubble, syringe needle block, vein runs pin, pipeline is tired, drip warning such as sky) reach reduce labor intensity, improve clinical safety, the purpose of minimizing human ltc.
(6) utilize mechanics of communication, realize communication function.
The infusion pump of circulation in the market, the overwhelming majority all are to adopt chip for driving to realize the control to motor, and the chip for driving of motor generally all provides the control to the positive and negative both direction of motor.That is to say that chip for driving has been confirmed the rotation direction of motor under specific hardware circuit design, or, realize the forward or reverse of motor according to the instruction that master cpu sends.Yet whether hardware circuit design is reliable, or whether the instruction that chip for driving is received from master cpu is correct, all is the actual control effect of influence.Such as; The design original intention of hardware circuit is to hope that motor rotates (being assumed to counterclockwise) by a direction; But owing to certain unknown reason; Such as circuit disturbed, rosin joint appears in certain components and parts on the circuit or even come off or the like, in the use of reality, reversal development has appearred in motor.Again such as, when master cpu sent the motor steering control instruction, signal had received outside or circuit own and has disturbed, and causes the actual instruction of receiving of chip for driving incorrect, thereby caused motor to rotate by desired direction.
Like the infusion pump among the patent CN94243596.6 is main frame with the linear peristaltic pump; And the occlusion detection circuit has been installed, bubble detection circuit, heart rate detection circuit, the control of whole machine using satellite computer; All can report to the police to unusually having become etc. in the infusion process like bubble, obstruction, heart rate; Heart rate can onlinely be detected, and according to the situation of change of heart rate, the adjustment transfusion several times automatically.Alleviate nurse job intensity, improved the safety and the reliability of transfusion.In its patented technology, do not relate to the measure and the method for reversing of preventing.
In practical application, there is the infusion segment pump to possess anti-reverse function.The reverse-rotation preventing function of infusion pump is actually the process of a closed loop control; Through specific device, be decoded into the different pulse signal to the direction of rotation of motor, and then feed back to master cpu; Master cpu is learnt actual the turning to of motor according to the pulse signal that receives.If the switched in opposite of actual steering and expectation then stops transfusion, the output tip of the text, and send sound and light alarm.
As the core component in the infusion pump, peristaltic pump is a kind of liquid transporting apparatus of may command flow velocity.Make through the repeated compression elastic tube commonly that content moves along certain orientation in the pipe, its flow velocity is determined with compression speed by the diameter of pipe.If the order of compression changes, then the flow direction of tube fluid just changes.
The operation principle of peristaltic pump is similar to one of pinching of finger and is full of fluidic flexible pipe, along with moving of finger, forms negative pressure in the pipe, and liquid flows thereupon, and the sliding tube inner fluid moves forward along with pointing forward.Difference according to the working position shape is divided into the roller peristaltic pump and refers to formula blade peristaltic pump.
The roller peristaltic pump is exactly to replace finger with roller, turns to according to fixed, continues the flexible pipe of full of liquid is pushed, and makes liquid in pipe move forward along the flow direction of expectation; Finger formula blade peristaltic pump is the slide block with a series of vane types, according to certain sequence arrangement, and replaces finger tube wall to be pushed according to preset order in the flexible pipe outside of full of liquid, makes liquid in pipe move forward along the flow direction of expectation.For referring to formula blade peristaltic pump; What the extruding that slide block produces was moved is to be rotated by the cam with the slide block equal number to cause; The corresponding cam of each piece slide block; All cams all are installed on same the driving shaft, and the mobile order of slide block is determined with the cam structure size by putting in order of these cams.
On market the most common to some technology that prevent to reverse in; The direction that the device detection motor of processing through optics and photovoltaic principals rotates reaches the technology of judging the peristaltic pump direction of rotation, and it is made up of light source, code-disc (also being raster grid), optical system and four parts of circuit.The method that is adopted is roughly on the output shaft of motor, and an opaque code-disc of rotation synchronously is installed, the periphery of code-disc, and the unequal grid of the size that distributing in the both sides of these grids, is installed optical emitting element and optical receiver component respectively.So, in the rotation process of code-disc along with motor, the grid that the signal of the optical element on both sides constantly is rotated intercepts, and original so lasting signal has just produced with grid and rotated another intermittent signal of getting in touch surely.The rotation of positive and negative both direction, code-disc can produce the two pulse signals of phase phase difference 90 degree, and through comparison and analysis to these signals, the judgement to code-disc rotating speed and direction of rotation is made by system, and then judge the direction of rotation of motor.The device that this optics and photovoltaic principals are processed detects the method for motor direction of rotation and has used wide sending out, but it needs the special device that transmits and receives, and cost is higher.
The utility model content
The purpose of this utility model provides a kind of infusion pump that prevents the peristaltic pump reverse function that has, and this infusion pump is simple in structure, cost is low, can judge the rotation direction of peristaltic pump, and has the function that prevents the peristaltic pump counter-rotating.
The above-mentioned purpose of this utility model realizes through following technical scheme: a kind of have an infusion pump that prevents the peristaltic pump reverse function, and it comprises the pump housing, peristaltic pump, motor and controlling organization, and peristaltic pump is installed in the pump housing of infusion pump; Said peristaltic pump has power transmission shaft and is contained in a plurality of wriggling slide blocks on the power transmission shaft with axially going here and there; The wriggling slide block is used for extruding and interts at the intravital tube for transfusion of infusion pump pump, and the power transmission shaft of peristaltic pump links to each other with the output shaft of motor, is rotated synchronously by the motor-driven power transmission shaft; Said controlling organization can be controlled motor action; It is characterized in that: on the end face of said peristaltic pump power transmission shaft on same circumference according to inhomogeneous fixing at least three Magnet of certain angle, said controlling organization also comprises Hall element and signal processing circuit, Hall element is electrically connected with signal processing circuit; Said Hall element is installed in the said pump housing; The installation site of Hall element is corresponding with the position of said Magnet, and said Hall element can be sensed Magnet and induced signal is transferred to signal processing circuit, and said signal processing circuit is analyzed and handled after receiving the next signal of Hall element transmission; To judge the rotation direction of peristaltic pump power transmission shaft; And when detecting the signal of peristaltic pump power transmission shaft counter-rotating, send the signal that pressure stops, preventing the peristaltic pump counter-rotating to motor.
This utility model infusion pump is in the control system of control circuit and motor composition; Magnetic signal through be no less than three in peristaltic pump end face design takes place and testing agency, obtains the signal corresponding with direction of rotation, and passes through calculating and the analysis of control circuit to signal; Distinguish the direction of rotation of motor; When counter-rotating appears in motor, the operation of forced termination infusion pump, thereby the safety and the reliability of raising infusion pump.
In this utility model, the magnetic intensity of the distance of reaction of Hall element and the sensitivity of Hall element and Magnet is directly proportional, and the distance of reaction between said Hall element and the Magnet is preferably 5～10mm, more preferably 8～10mm.
In this utility model, said Magnet is three, and the center angle that has between the adjacent magnets is followed successively by 70 °, 120 °, 170 °.
In this utility model, said Magnet is four, and the center angle that has between the adjacent magnets is followed successively by 50 °, 80 °, 100 °, 130 °.
In this utility model, said Magnet is five, and the center angle that has between the adjacent magnets is followed successively by 50 °, 60 °, 70 °, 90 °, 90 °.
Compared with prior art, the utlity model has following remarkable result:
1, this utility model infusion pump does not need this element of code-disc (raster grid), has reduced cost and difficulty that installation brought.
2, this utility model infusion pump is because the stability of Magnet is better than optical element, and therefore, the stability of circuit strengthens, and with low cost.
3, this utility model infusion pump directly detects the power transmission shaft of peristaltic pump, rather than the output shaft of motor, more near the target that detects, has improved the effectiveness that detects.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment this utility model is explained further details.
Fig. 1 is the overall structure sketch map of this utility model infusion pump embodiment one;
Fig. 2 is the side view that has partial cutaway among this utility model infusion pump embodiment one, shows the installation site of peristaltic pump;
Fig. 3 is the overall structure sketch map of peristaltic pump among this utility model infusion pump embodiment one;
Fig. 4 is the end view of peristaltic pump among this utility model infusion pump embodiment one, shows that Magnet concerns in the position of peristaltic pump end face;
Fig. 5 is the different wave that the peristaltic pump rotating is exported among this utility model infusion pump embodiment one;
Fig. 6 is the end view of peristaltic pump among this utility model infusion pump embodiment two, shows that Magnet concerns in the position of peristaltic pump end face;
Fig. 7 is the end view of peristaltic pump among this utility model infusion pump embodiment three, shows that Magnet concerns in the position of peristaltic pump end face;
Description of reference numerals
1, wriggling slide block; 2, the pump housing; 3, Hall element; 4, Magnet; 5, power transmission shaft
The specific embodiment
Embodiment one
To a kind of infusion pump that prevents the peristaltic pump reverse function that has shown in Figure 5, it comprises the pump housing 2, peristaltic pump, motor and controlling organization like Fig. 1, and peristaltic pump is installed in the pump housing 2 of infusion pump; Peristaltic pump has power transmission shaft 5 and is contained in a plurality of wriggling slide blocks 1 on the power transmission shaft 5 with axially going here and there; Wriggling slide block 1 is used to push the tube for transfusion that interts in the infusion pump pump housing 2, and the power transmission shaft 5 of peristaltic pump links to each other with the output shaft of motor, is rotated synchronously by motor-driven power transmission shaft 5; Controlling organization can be controlled motor action; On the end face of peristaltic pump power transmission shaft 5 on same circumference according to inhomogeneous fixing three Magnet 4 of certain angle, the center angle that has between the adjacent magnets in these three Magnet 4 is followed successively by 70 °, 120 °, 170 °, controlling organization also comprises Hall element 3 and signal processing circuit; Hall element 3 is electrically connected with signal processing circuit; Hall element 3 is installed in the pump housing 2, and the installation site of Hall element 3 is corresponding with the position of Magnet 4, Hall element 3 and Magnet 4 between distance of reaction be 9mm; Hall element 3 can be sensed Magnet 4 and induced signal is transferred to signal processing circuit; Signal processing circuit is analyzed and is handled after receiving the next signal of Hall element 3 transmission, with the rotation direction of judgement peristaltic pump power transmission shaft 5, and when detecting the signal of peristaltic pump power transmission shaft 5 counter-rotatings; Send the signal that pressure stops to motor, prevent the peristaltic pump counter-rotating.
The principle of this utility model is through between Magnet 4 and the Hall element 3, near certain limit, is understanding the characteristics that produce signal, provides to circuit and analyzes required signal.Because on circumference on the end face of peristaltic pump power transmission shaft 5; The signal that produces during for positive and negative select is had any different, and on same circumference, fixes three Magnet 4 by the certain angle difference is uneven, in the position of correspondence; Fix Hall element 3 and signal processing circuit thereof; Adjust the distance of Magnet 4 and Hall element 3, when making each Magnet 4 near Hall element 3, circuit can detect corresponding signal.So, when peristaltic pump rotated, the Magnet 4 on the peristaltic pump driving shaft can once pass through the induction zone of Hall element 3, because the distribute spacing of Magnet 4 is distinguishing, therefore, and different choice directions, the signal of generation is just different.As shown in Figure 5, the peristaltic pump waveform of being exported that just changes, reverses is different, because motor and peristaltic pump rotate synchronously; Turn to identical; According to analysis and the processing of circuit, just can judge the direction of rotation of peristaltic pump, thereby also can draw the direction of rotation of motor signal.When Circuits System detects when being normal direction of rotation, keep detected state; When signal that detects counter-rotating or abnormal signal, system sends the signal that pressure stops to motor, and peristaltic pump is stopped.
In this utility model, the magnetic intensity of the distance of reaction of Hall element and the sensitivity of Hall element and Magnet 4 is directly proportional, and the distance of reaction between Hall element 3 and the Magnet 4 is preferably 5～10mm, more preferably 8～10mm.
Embodiment two
The end view of peristaltic pump is as shown in Figure 6 among the embodiment two of this utility model infusion pump, and different with embodiment one is, Magnet 4 is four, and the center angle that has between the adjacent magnets 4 is followed successively by 50 °, 80 °, 100 °, 130 °.
Embodiment three
The end view of peristaltic pump is as shown in Figure 7 among the embodiment three of this utility model infusion pump, and different with embodiment one is, Magnet 4 is five, and the center angle that has between the adjacent magnets 4 is followed successively by 50 °, 60 °, 70 °, 90 °, 90 °.
The foregoing description of this utility model is not the qualification to this utility model protection domain; The embodiment of this utility model is not limited thereto; According to the foregoing of this utility model,, do not breaking away under the above-mentioned basic fundamental thought of this utility model prerequisite according to the ordinary skill knowledge and the customary means of this area; Modification, replacement or the change of other various ways that the said structure of this utility model is made all drop within the protection domain of this utility model.
Claims (5)
1. one kind has the infusion pump that prevents the peristaltic pump reverse function; It comprises the pump housing, peristaltic pump, motor and controlling organization; Peristaltic pump is installed in the pump housing of infusion pump, and said peristaltic pump has power transmission shaft and is contained in a plurality of wriggling slide blocks on the power transmission shaft with axially going here and there, and the wriggling slide block is used for extruding and interts at the intravital tube for transfusion of infusion pump pump; The power transmission shaft of peristaltic pump links to each other with the output shaft of motor; Rotated synchronously by the motor-driven power transmission shaft, said controlling organization can be controlled motor action, it is characterized in that: on the end face of said peristaltic pump power transmission shaft on same circumference according to inhomogeneous fixing at least three Magnet of certain angle; Said controlling organization also comprises Hall element and signal processing circuit; Hall element is electrically connected with signal processing circuit, and said Hall element is installed in the said pump housing, and the installation site of Hall element is corresponding with the position of said Magnet.
2. according to claim 1 have an infusion pump that prevents the peristaltic pump reverse function, and it is characterized in that: the distance of reaction between said Hall element and the Magnet is 8～10mm.
3. according to claim 1 and 2 have an infusion pump that prevents the peristaltic pump reverse function, and it is characterized in that: said Magnet is three, and the center angle that has between the adjacent magnets is followed successively by 70 °, 120 °, 170 °.
4. according to claim 1 and 2 have an infusion pump that prevents the peristaltic pump reverse function, and it is characterized in that: said Magnet is four, and the center angle that has between the adjacent magnets is followed successively by 50 °, 80 °, 100 °, 130 °.
5. according to claim 1 and 2 have an infusion pump that prevents the peristaltic pump reverse function, and it is characterized in that: said Magnet is five, and the center angle that has between the adjacent magnets is followed successively by 50 °, 60 °, 70 °, 90 °, 90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220016483 CN202605422U (en) | 2012-01-06 | 2012-01-06 | Infusion pump with function of preventing peristaltic pump reversal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220016483 CN202605422U (en) | 2012-01-06 | 2012-01-06 | Infusion pump with function of preventing peristaltic pump reversal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202605422U true CN202605422U (en) | 2012-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220016483 Expired - Fee Related CN202605422U (en) | 2012-01-06 | 2012-01-06 | Infusion pump with function of preventing peristaltic pump reversal |
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| CN (1) | CN202605422U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104444A (en) * | 2013-01-29 | 2013-05-15 | 深圳玉升医疗科技有限公司 | Peristaltic device |
| CN105031762A (en) * | 2015-08-05 | 2015-11-11 | 苏州泽德医疗器械有限公司 | Transfusion apparatus |
| CN105363095A (en) * | 2015-11-20 | 2016-03-02 | 深圳影迈科技股份有限公司 | Infusion pump and control time sequence detection method of infusion pump |
| CN109998915A (en) * | 2014-07-21 | 2019-07-12 | 美敦力迷你迈德公司 | Intelligent connection interface |
| CN110141721A (en) * | 2019-04-30 | 2019-08-20 | 深圳市刚竹医疗科技有限公司 | Infusion device, infusion method, computer equipment and computer readable storage medium |
| WO2022043986A1 (en) | 2020-08-23 | 2022-03-03 | Red Sea Aquatics Development Ltd | Improvements in aquarium equipment |
| CN117256339A (en) * | 2023-11-14 | 2023-12-22 | 东莞市嘉航实业有限公司 | Medium and long distance shearing device and control method |
-
2012
- 2012-01-06 CN CN 201220016483 patent/CN202605422U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104444A (en) * | 2013-01-29 | 2013-05-15 | 深圳玉升医疗科技有限公司 | Peristaltic device |
| CN109998915A (en) * | 2014-07-21 | 2019-07-12 | 美敦力迷你迈德公司 | Intelligent connection interface |
| US11083838B2 (en) | 2014-07-21 | 2021-08-10 | Medtronic Minimed, Inc. | Smart connection interface |
| US11185627B2 (en) | 2014-07-21 | 2021-11-30 | Medtronic Minimed, Inc. | Smart connection interface |
| CN105031762A (en) * | 2015-08-05 | 2015-11-11 | 苏州泽德医疗器械有限公司 | Transfusion apparatus |
| CN105363095A (en) * | 2015-11-20 | 2016-03-02 | 深圳影迈科技股份有限公司 | Infusion pump and control time sequence detection method of infusion pump |
| CN105363095B (en) * | 2015-11-20 | 2018-08-03 | 深圳影迈科技股份有限公司 | The detection method of infusion pump and infusion pump control sequential |
| CN110141721A (en) * | 2019-04-30 | 2019-08-20 | 深圳市刚竹医疗科技有限公司 | Infusion device, infusion method, computer equipment and computer readable storage medium |
| WO2022043986A1 (en) | 2020-08-23 | 2022-03-03 | Red Sea Aquatics Development Ltd | Improvements in aquarium equipment |
| CN117256339A (en) * | 2023-11-14 | 2023-12-22 | 东莞市嘉航实业有限公司 | Medium and long distance shearing device and control method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Guangzhou Safeway Medical Science Technology Co.,Ltd. Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Guangzhou Safeway Medical Science Technology Co.,Ltd. Document name: Notification of Termination of Patent Right |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20160106 |
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| CF01 | Termination of patent right due to non-payment of annual fee |