CN105339021A - Syringe pump and syringe pump control method - Google Patents
Syringe pump and syringe pump control method Download PDFInfo
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- CN105339021A CN105339021A CN201480021138.8A CN201480021138A CN105339021A CN 105339021 A CN105339021 A CN 105339021A CN 201480021138 A CN201480021138 A CN 201480021138A CN 105339021 A CN105339021 A CN 105339021A
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- feed screw
- syringe
- halfnut
- motor
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
- A61M5/1452—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons
- A61M5/14546—Front-loading type injectors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
- A61M5/1452—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons
- A61M5/1458—Means for capture of the plunger flange
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
- A61M5/1452—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons
- A61M2005/14573—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons with a replaceable reservoir for quick connection/disconnection with a driving system
-
- 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
- A61M2205/14—Detection of the presence or absence of a tube, a connector or a container in an apparatus
-
- 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
- A61M2205/50—General characteristics of the apparatus with microprocessors or computers
- A61M2205/502—User interfaces, e.g. screens or keyboards
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- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
Whether or not a syringe is attached to a syringe pump is detected (Step SA1), and a motor is driven in cases in which it is detected that the syringe is attached (Step SA2). As a result, the causes of minor failures from among the causes of engagement failure between a feed screw and a half nut are automatically eliminated and the frequency of the occurrence of engagement failure is reduced, and in addition, the operability for users is improved and the occurrence of insufficient dosing is prevented.
Description
Technical field
The present invention relates to a kind of can by setting flow send the micro-injection pump of liquid and the control method of micro-injection pump in syringe.
Background technology
All the time, on-the-spot all use of medical treatment can accurately to the micro-injection pump of patient's liquid medicine injection.Micro-injection pump is configured to keep different size, different types of syringe, can by driving the piston press portion for pressing syringe piston, thus press lower piston, the medicinal liquid in syringe is sent (for example, referring to patent documentation 1) exactly.
That is, the driving mechanism of micro-injection pump possesses: the feed screw utilizing motor to rotate, drive, is snapped at the halfnut of feed screw, and for making halfnut be the declutcher control lever of the state leaving feed screw; Piston press portion is connected to halfnut.Further, if under the state of piston keeping institute's mounting of syringe with piston press portion, utilize motor that feed screw is rotated, then halfnut moves linearly along the axis of syringe, thus can by lower piston.When injecting liquid drug terminates and installs other syringes, or when the syringe of different size is installed, necessary mobile piston press section, it is made to aim at the piston position of syringe, now, declutcher control lever to be operated in advance, make halfnut leave feed screw, and can move freely vertically, the position in adjustment piston press portion.
In addition, described in technology as disclosed in Patent Document 1, in order to prevent feed screw and halfnut threaded portion because of wearing and tearing the problem such as precision reduction, ridge top generally uses smooth trapezoidal thread.
In addition, use during micro-injection pump and require to possess high security, therefore, be embedded with various alarm function, security function.Such as have injection to evade function etc., utilize the interlocking pattern of photoelectric sensor or jogging switches measurement feed screw and halfnut, when occur malocclusion time, give the alarm, even if or press medicinal liquid inject start button also cannot inject.
Prior art document
Patent documentation
[patent documentation 1] Japanese Patent Laid-Open 2006-105198 publication
Summary of the invention
The technical problem solved
Wherein, on micro-injection pump during mounting of syringe, declutcher control lever to be operated as mentioned above, make halfnut feed screw away from keyboard, the position in adjustment piston press portion, and then make halfnut and feed screw occlusion.But, because the threaded portion of feed screw and halfnut is trapezoidal thread, according to the axial location relation of feed screw and halfnut, against each other between the ridge flat top surfaces likely occurring feed screw and halfnut, the ridge of one side cannot enter the state of the thread groove of the opposing party, that is, there is malocclusion.In order to reduce the occurrence frequency of this malocclusion, considering the shape having machining screw tooth described in technology as disclosed in Patent Document 1, if but make trapezoidal thread, can abut with certain probability between the tabular surface at ridge top.
When there is malocclusion, by alert notification user, or Function effect is evaded in injection, does not perform injection.As for the reason causing malocclusion, major part is the reason of minor failure, such as, abutting between ridge flat top surfaces, and the great reasons such as screw thread damage are less.
But no matter be which kind of reason, user all must take corresponding treatment measures for malocclusion, therefore judge that this micro-injection is pump operated miscellaneous and operability is poor.
In addition, if user not to be noted malocclusion situation generation and start dosing techniques, can think and start administration but the situation of in fact not administration, administration can be caused in this case not enough.
The present invention develops in view of the above problems and forms, its object is to: the reason automatically getting rid of the minor failure caused in the reason of feed screw and halfnut malocclusion, reduce the occurrence frequency of malocclusion, thus improve the operability of user, and avoid the generation of the not enough situation of administration.
Technical scheme
To achieve these goals, the present invention makes feed screw rotate when being provided with syringe, thus against each other between the tabular surface can eliminating ridge top, and ridge is embedded in the thread groove of the opposing party.
1st invention is a kind of micro-injection pump, and it possesses: piston press portion, and its pressing is filled with the piston of the syringe of liquid;
Driving mechanism, it drives above-mentioned piston press portion; And
Control device, it controls above-mentioned driving mechanism; The feature of described micro-injection pump is,
Above-mentioned driving mechanism possesses: feed screw, make the motor that this feed screw rotates, be snapped at the halfnut of above-mentioned feed screw, and for this halfnut is being snapped at the switching member carrying out between the state of above-mentioned feed screw and the state leaving above-mentioned feed screw switching;
Above-mentioned control device is configured to: possess for detecting the syringe installment state testing agency whether being provided with syringe, when utilizing this syringe installment state testing agency to detect to be provided with syringe, carries out motor drived control to drive said motor.
According to this formation, utilize the switching member of driving mechanism to make halfnut be the state leaving feed screw, thus piston press portion can be made to move freely, not by the restriction of feed screw.Such as, after the position in adjustment piston press portion makes it aim at installed syringe, when utilizing switching member to make halfnut be the state being snapped at feed screw, against each other between the ridge flat top surfaces likely occurring halfnut and feed screw, halfnut cannot with the situation of feed screw occlusion.
And in the present invention, when being provided with syringe, control device CD-ROM drive motor, makes feed screw rotate.By the rotation of this feed screw, the abutment portion relative movement in the axial direction of the ridge of feed screw and the ridge of halfnut.By the relative movement of this abutment portion, the ridge of halfnut is embedded in the thread groove of feed screw, and halfnut is snapped at feed screw.Therefore, cause in the reason of feed screw and halfnut malocclusion, between ridge, the reason of this minor failure against each other is excluded automatically, and the occurrence frequency of malocclusion reduces.
2nd invention is the micro-injection pump as described in the 1st invention, wherein,
Above-mentioned control device is configured to: possess the interlocking pattern testing agency whether being snapped at above-mentioned feed screw for detecting above-mentioned halfnut, when utilizing this interlocking pattern testing agency to detect that above-mentioned halfnut is not snapped at above-mentioned feed screw, carry out motor drived control.
According to this formation, detect the situation that halfnut is not snapped at feed screw, CD-ROM drive motor when not being engaged.Therefore, the occurrence frequency of malocclusion reduces.
3rd invention is the micro-injection pump as described in the 2nd invention, it is characterized in that,
Said syringe installment state testing agency is configured to: whether the installment state detecting syringe is normal;
Above-mentioned control device is configured to: after the installment state utilizing said syringe installment state testing agency to carry out syringe detects, when detecting that the installment state of syringe is normal, utilize above-mentioned interlocking pattern testing agency to detect.
That is, the installment state that the reason of feed screw and halfnut malocclusion also comprises such as syringe is abnormal, the situation that the position in piston press portion is bad.In this situation, the probability of feed screw and halfnut occlusion also cannot be made higher even if carry out motor drived control.In the present invention, detect the installment state of syringe, when detecting normal, carry out motor drived control, thus useless control can be got rid of as much as possible, carry out and control accurately.
4th invention is the micro-injection pump as described in the 2nd or the 3rd invention, it is characterized in that, above-mentioned control device is configured to: possess for notifying that above-mentioned halfnut is not snapped at the notice mechanism of above-mentioned feed screw, after carrying out said motor drived control, above-mentioned interlocking pattern testing agency is utilized again to detect, when utilizing this interlocking pattern testing agency to detect that above-mentioned halfnut is not snapped at above-mentioned feed screw, utilize the above-mentioned halfnut of above-mentioned notice authority notification and above-mentioned feed screw malocclusion.
That is, after carrying out motor drived control, when halfnut is not snapped at feed screw; likely that driving mechanism exception or syringe are installed extremely; in this case utilize notice authority notification malocclusion, thus relevant abnormalities can be notified as early as possible, take respective handling measure.
5th invention be invent any one of the 1st to the 4th invention as described in micro-injection pump, it is characterized in that,
Above-mentioned control device is configured to: in said motor drived control, during said motor rotates, when utilizing above-mentioned interlocking pattern testing agency to detect that above-mentioned halfnut is snapped at above-mentioned feed screw, said motor is stopped the rotation.
According to this formation, when halfnut is snapped at feed screw, motor is stopped the rotation, thus during can suppressing motor drived control, piston move.
6th invention be invent any one of the 1st to the 5th invention as described in micro-injection pump, it is characterized in that,
Said motor drived control makes above-mentioned feed screw to the control of piston press sideway swivel.
According to this formation, when when motor drived control, driving force is delivered to piston, piston moves to syringe liquid infusion side, and therefore patient blood back can not occur.
7th invention is a kind of control method of micro-injection pump, and described micro-injection pump possesses: piston press portion, and its pressing is filled with the piston of the syringe of liquid; And
Driving mechanism, it drives above-mentioned piston press portion;
Above-mentioned driving mechanism has: feed screw, make the motor that this feed screw rotates, be snapped at the halfnut of above-mentioned feed screw, and for this halfnut is being snapped at the switching member carrying out between the state of above-mentioned feed screw and the state leaving above-mentioned feed screw switching; The control method of described micro-injection pump is characterised in that,
Detect after whether syringe being installed,
When being provided with syringe, driving said motor, thus above-mentioned feed screw is rotated.
According to this formation, the same with the 1st invention, when the reason due to minor failure causes halfnut and feed screw not to be engaged, the reason of this minor failure can be got rid of automatically, and therefore, the occurrence frequency of malocclusion reduces.
Beneficial effect
According to the 1st invention, carry out motor drived control when being provided with syringe, thus automatically can get rid of the reason of such minor failure against each other between ridge.Whereby, the occurrence frequency of malocclusion can be reduced, thus the operability of user can be improved, and the generation of the not enough situation of administration can be avoided.
According to the 2nd invention, carry out motor drived control when detecting that halfnut is not snapped at feed screw, thus conscientiously can reduce the occurrence frequency of malocclusion.
According to the 3rd invention, detect interlocking pattern when detecting that syringe installment state is normal, thus can control accurately according to the installment state of syringe.
According to the 4th invention, after carrying out motor drived control, notify malocclusion when halfnut is not snapped at feed screw, thus can notify that driving mechanism exception or syringe are installed abnormal as early as possible, improve safety.
According to the 5th invention, when motor drived control, when halfnut is snapped at feed screw, motor is stopped the rotation, thus during can suppressing motor drived control, piston move, and carries out administration more safely.
According to the 6th invention, make feed screw to piston press sideway swivel when motor drived control, thus can prevent patient from blood back occurring.
According to the 7th invention, the same with the 1st invention, the occurrence frequency of malocclusion can be reduced, thus the operability of user can be improved, and the generation of the not enough situation of administration can be avoided.
Accompanying drawing explanation
Fig. 1 is the axonometric chart of the micro-injection pump that embodiment of the present invention is correlated with.
Fig. 2 is the figure of the driving mechanism, piston press portion etc. observing micro-injection pump from rear side.
Fig. 3 is that the III-III alignment of Fig. 2 looks sectional view.
Fig. 4 is the axonometric chart of a part for the driving mechanism representing micro-injection pump.
Fig. 5 is that in halfnut Fig. 3 (a) when not being snapped at feed screw, V-V alignment looks sectional view.
Fig. 6 is the figure being equivalent to Fig. 4 after motor drived control.
Fig. 7 is the block diagram of micro-injection pump.
Fig. 8 is the flow chart of the rate-determining steps representing control device.
Fig. 9 is the flow chart of other control examples representing control device.
Detailed description of the invention
Below, embodiments of the present invention are described in detail based on accompanying drawing.In addition, the illustrative in nature of following preferred implementation is only illustration, and the meaning of unrestricted the present invention, its application thing or its purposes.
Fig. 1 is the axonometric chart of the micro-injection pump 1 that embodiment of the present invention is correlated with.Micro-injection pump 1 uses during the liquid such as patient's liquid medicine injection at medical treatment scene, installs the syringe (not shown) being filled with medicinal liquid, and presses the piston of syringe according to the speed preset, thus can inject the medicinal liquid in syringe.In addition, the power supply of micro-injection pump 1 is supplied by outside, and is built-in with not shown accumulator, also can pass through battery-operated.
Micro-injection pump 1 possesses: housing 10, in the piston press portion 20 of housing 10 outer pressing syringe piston, the driving mechanism 30 (as shown in Figure 2) of driven plunger press section 20, and the control device A (as shown in Figure 7) controlling driving mechanism 30.In the inside of housing 10, as shown in Figure 2, the framework 15 installing driving mechanism 30 is provided with.Cylinder guide 16 is fixed in framework 15 with the attitude extended along the left and right directions of micro-injection pump 1, the halfnut 33 (as described below) of described guide rod 16 for having along the left and right directions directs drive mechanism 30 of micro-injection pump 1.
As shown in Figure 1, on housing 10, rear side is formed with mounting table 10a, for loading the main part (being filled with the barrel of medicinal liquid) of syringe.On housing 10, front side is provided with various buttons (comprising the start button 11 shown in Fig. 7) for operating micro-injection pump 1 and display panels 12 etc.
In addition, in description of the present embodiment, when operating micro-injection pump 1, the side being in front side from the angle of user is defined as front side, the side being in rear side from the angle of user is defined as rear side, the left side of the angle from user is defined as left side, the right side of the angle from user is defined as right side.Piston is pressed towards left side from the right side of Fig. 1.
Be placed in the syringe on mounting table 10a, its liquid discharge side is positioned at left side, and the flange side of piston is positioned at right side.On housing 10, rear side is provided with syringe fixture 13, for being placed in the main part of the syringe on mounting table 10a from top pressing and keeping it.
At the rear side of housing 10, piston press portion 20 is arranged at right side, can move to the left from position shown in Fig. 1.The left surface in piston press portion 20 is provided with a pair flange maintenance pawl 21, for clamp piston flange and it is kept.In addition, the top in piston press portion 20 is provided with action bars 23, for operating pawl 21 and aftermentioned halfnut 33.
As shown in Figure 2, driving mechanism 30 possesses: feed screw 31, make the motor 32 that feed screw 31 rotates, be snapped at the halfnut 33 of feed screw 31, and for halfnut 33 is being snapped at the changer lever 34 (switching member) carrying out between the state of feed screw 31 and the state leaving feed screw 31 switching.
Feed screw 31 is continuously to two ends, the left and right landform screw thread person of forming in echelon on the metal bar outer peripheral face extended along the left and right directions of micro-injection pump 1.In the partial cross section figure of feed screw 31 shown in Fig. 5 and Fig. 6, the ridge of trapezoidal thread represents with symbol 31a, and thread groove symbol 31b represents.The shape of trapezoidal thread is well-known shape.
The both ends, left and right of the both ends of feed screw 31 framework 15 as shown in Figure 2 rotatably support.Motor 32 is connected to control device A, is controlled the switching, rotation amount, rotary speed etc. of stopping, rotation, direction of rotation by control device A.Motor 32 is fixed on the left end of framework 15.The power output of motor 32 is input to the left part of feed screw 31 by reduction gearing (not shown).
As shown in Figure 2 to 4, the leading section of changer lever 34 is provided with balladeur train 36.Balladeur train 36 is can not the mode of movement vertically install relative to changer lever 34, and in this case, changer lever 34 can sway relative to balladeur train 36.
Feed screw 31 runs through balladeur train 36.In addition, as shown in Figure 4, be formed in the bottom of balladeur train 36 inserted through hole 36a, for guide rod 16 inserted through.Guide rod 16 slides on the inner peripheral surface inserted through hole 36a of balladeur train 36, whereby, and can guide carriage 36 in left-right direction.
Halfnut 33 and balladeur train 36 form as one.The top of halfnut 33 is fixed, and can not move vertically, and also can not swing around axle relative to the leading section of changer lever 34.Therefore, if make changer lever 34 rotate around axle (arrow x direction), Fig. 3 (b) state is become from Fig. 3 (a) state, then halfnut 33 rotates thereupon, now, balladeur train 36 can rotate relative to changer lever 34, therefore, balladeur train 36 can not rotate because of the rotation of changer lever 34, is maintained resting state.
Halfnut 33 possesses: split nut portion 33A, and its shape is that the nut being threaded onto feed screw 31 shape is radially roughly divided into half; And for the split nut retaining member 33B of fixing split nut portion 33A.As shown in Figures 5 and 6, the inner peripheral surface of split nut portion 33A is formed with thread groove 33b and ridge 33a, is snapped at ridge 31a and the thread groove 31b of feed screw 31 respectively.In the present embodiment, feed screw 31 and halfnut 33 are trapezoidal thread, therefore can prevent the precision because of wearing and tearing from reducing.
Split nut retaining member 33B is installed on changer lever 34.Notch part 33c is formed with, with the outer peripheral face making split nut retaining member 33B leave feed screw 31 in split nut retaining member 33B.The object of design notch part 33c is, when utilizing changer lever 34 to make halfnut 33 become the rotation of Fig. 3 (b) state ground from Fig. 3 (a) state, split nut retaining member 33B does not contact with the outer peripheral face of feed screw 31.In addition, halfnut 33 by afterburning along the direction being snapped at feed screw 31 all the time, therefore, by giving the power of this active force of antagonism to changer lever 34, thus can become state shown in Fig. 3 (b) by not shown afterburning component.
As shown in Figure 2, changer lever 34 extends to the right from balladeur train 36, and its right part is provided with piston press portion 20.That is, piston press portion 20 is the state being connected to balladeur train 36 and halfnut 33 by changer lever 34, if halfnut 33 moves in left-right direction, then piston press portion 20 is mobile mutually commensurability in the same direction.
On the other hand, the right part of changer lever 34 is connected with aforesaid operations bar 23.This action bars 23 is moved to the rear side in Fig. 1, front side, thus changer lever 34 can be made to resist the active force of above-mentioned afterburning component, sway.Rotate changer lever 34 along direction shown in arrow X in Fig. 3, the ridge 33a of halfnut 33 and thread groove 33b, as shown in Fig. 3 (b), moves to the right side in this figure.Whereby, the ridge 33a of halfnut 33 and thread groove 33b leaves thread groove 31b and the ridge 31a of feed screw 31 respectively.On the other hand, when not applying above-mentioned operating physical force to action bars 23, under the active force of afterburning component, halfnut 33 rotates along the rightabout of arrow X, and the ridge 33a of halfnut 33 and thread groove 33b is snapped at ridge 31a and the thread groove 31b of feed screw 31.
In addition, as shown in Figure 7, control device A possesses photoelectric sensor (interlocking pattern testing agency) 40, whether is snapped at feed screw 31 for detecting halfnut 33.Photoelectric sensor 40 is configured to: by detecting the position of halfnut 33, thus whether detection halfnut 33 is snapped at feed screw 31; Be specially, when halfnut 33 is positioned at position shown in Fig. 3 (a), be judged as being snapped at feed screw 31; When halfnut 33 is positioned at position shown in position shown in Fig. 3 (b) or Fig. 5, be judged as not being snapped at feed screw 31.
In addition, interlocking pattern testing agency can detect halfnut 33 and whether be snapped at feed screw 31, and therefore, microswitch also can be used to replace photoelectric sensor 40, and the position of direct-detection halfnut 33, can also use other sensors to detect.
In addition, as shown in Figure 7, control device A also possesses syringe size detecting sensor 41, for detecting the size of syringe.Syringe size detecting sensor 41 is the sensors for detecting the syringe size be arranged on micro-injection pump 1, and this syringe size detecting sensor can be utilized to detect whether be provided with syringe.
In addition, control device A also possesses flange detecting sensor 42, for detect syringe flange whether keep by the flange maintenance pawl 21 in piston press portion 20.Flange detecting sensor 42 can be utilized to detect and whether syringe to be installed.
Moreover control device A also possesses piston detecting sensor 43, for detecting the presence or absence of syringe piston.Piston detecting sensor 43 can be utilized to detect and whether syringe to be installed.
Also said syringe size detection sensor 41, flange detecting sensor 42 and piston detecting sensor 43, therefore detailed is provided with in existing micro-injection pump.
Moreover, be also provided with siren (notice mechanism) 50 in this micro-injection pump 1.Siren 50 can be made up of such as display lamp or speaker etc., is controlled by control device A.When utilizing photoelectric sensor 40 to detect that halfnut 33 is not snapped at feed screw 31, when utilizing syringe size detecting sensor 41 to detect that installed syringe is not standard syringe, when utilizing flange detecting sensor 42 to detect that flange is not kept by flange maintenance pawl 21, when utilizing piston detecting sensor 43 to detect piston not in assigned position, siren 50 notifies correlation circumstance to user or surrounding people.
Next, with reference to the flow chart of Fig. 8, the control content of control device A is described.Control device A is configured to: process the sensor signal comprising the push-botton operation signal of start button 11, photoelectric sensor 40, syringe size detecting sensor 41, flange detecting sensor 42 and piston detecting sensor 43 etc., controls motor 32 and siren 50; Well-known microcomputer can be used to form control device A.
In step SA1 after the beginning of flow chart, control device A judges whether to be provided with syringe.In addition, the time started of this flow process is after the on and off switch of micro-injection pump 1 is set to ON by user.
The signal that step SA1 sends according to flange detecting sensor 42 judges.In this step SA1, when utilizing flange detecting sensor 42 to detect non-mounting of syringe on micro-injection pump 1, be judged as NO, again carry out identical detection.
In step SA1, when utilizing flange detecting sensor 42 to detect micro-injection pump 1 is provided with syringe, be judged as YES, enter step SA2.Step SA2 is motor drived control.
Namely, when syringe is installed to micro-injection pump 1, piston press portion 20 is moved in left-right direction so that when aiming at the piston of this syringe, by the operation of action bars 23, halfnut 33 is rotated around guide rod 16, becoming state shown in Fig. 3 (b), making halfnut 33 for leaving the state of feed screw 31.Whereby, halfnut 33 can move freely, thus piston press portion 20 can be moved to desired locations, when piston press portion 20 is positioned at desired locations, and finger unclamp operation bar 23.So under the active force of afterburning component, halfnut 33 will turn back to position shown in Fig. 3 (a).Now, according to the axial location of halfnut 33, as shown in Figure 5, the tabular surface that likely there will be the tabular surface of the ridge 33a of halfnut 33 and the ridge 31a of feed screw 31 abuts, and cannot turn back to the situation of position shown in Fig. 3 (a).
When there is position relationship shown in Fig. 5, do not give the alarm immediately, but in step SA4 CD-ROM drive motor 32, make it rotate ormal weight.If make motor 32 rotate, then feed screw 31 rotates, by the rotation of this feed screw 31, and the abutment portion relative movement in the axial direction of the ridge 31a of feed screw 31 and the ridge 33a of halfnut 33.By this relative movement, the ridge 33a of halfnut 33 is embedded in the thread groove 31b of feed screw 31, and as shown in Figure 6, halfnut 33 is snapped at feed screw 31.Therefore, cause in the reason of feed screw 31 and halfnut 33 malocclusion, between the tabular surface of ridge 31a, 33a, the reason of this minor failure against each other is excluded automatically, and the occurrence frequency of malocclusion reduces.
Afterwards, step SA3 is entered.In step SA3, detect start button 11 and whether be set to ON.If start button 11 is not set to ON, wait for that it is set to ON, when it is set to ON, enter step SA4.In step SA4, judge whether halfnut 33 and feed screw 31 are engaged.Step SA4 judges according to the signal of photoelectric sensor 40, when halfnut 33 and feed screw 31 are engaged, enters step SA6, starts administration.
In step SA6, control device A makes motor 32 rotate, and moves along the direction of pressing syringe piston to make piston press portion 20.The revolving force of motor 32 is delivered to feed screw 31, and feed screw 31 rotates.Because halfnut 33 is snapped at feed screw 31, therefore, halfnut 33 is guided on one side vertically (being left side in the present embodiment) mobile by guide rod 16.Because piston press portion 20 is connected to halfnut 33, therefore, piston press portion 20 moves to the left, whereby, with the piston of fixing speed pressing syringe, by the liquid infusion of syringe to patient.
When halfnut 33 and feed screw 31 are not engaged, enter step SA5, control siren 50, give the alarm.That is, even if make motor 32 rotate for eliminating malocclusion in step SA2, when halfnut 33 and feed screw 31 are not still engaged, are then likely that exception etc. appears in feed screw 31 or halfnut 33, therefore, give the alarm, notify surrounding people.
Based on the flow chart shown in Fig. 9, other examples of control method are described.In step SB1 after the beginning of flow chart, control device A judges that whether the installation of syringe is correct.This judgement comprises whether being provided with syringe.In addition, the time started of this flow process is after the on and off switch of micro-injection pump 1 is set to ON by user.
In step SB1, when utilizing syringe size detecting sensor 41 to detect that installed syringe is not standard syringe, when utilizing flange detecting sensor 42 to detect that flange is not kept by flange maintenance pawl 21, when utilizing piston detecting sensor 43 to detect piston not in assigned position, when utilizing these sensors 41 ~ 43 to detect non-mounting of syringe, when detect wherein at least one time, be judged as NO, namely the installation of syringe is incorrect, enter step SB2, control siren 50, give the alarm.
In step SB1, to the signal continuous observation about 2 seconds that syringe size detecting sensor 41, flange detecting sensor 42 and piston detecting sensor 43 send, if the installation of syringe is correct, is then judged as YES, enters step SB3.In step SB3, judge whether halfnut 33 and feed screw 31 are engaged.Step SB3 judges according to the signal of photoelectric sensor 40, and when halfnut 33 and feed screw 31 are engaged, the equal no problem of syringe side and micro-injection pump 1 side, enter step SB9, waiting for the start button 11 is set to ON.When start button 11 is set to ON, enter step SB8, start administration.
In step SB3, when judging that halfnut 33 and feed screw 31 are not engaged, enter step SB4, carry out motor drived control, and the occlusion of halfnut 33 and feed screw 31 is revised.
Afterwards, enter step SB5, waiting for the start button 11 is set to ON.When start button 11 is set to ON, enter step SB6, carry out the judgement identical with step SB3.That is, in step SB3, judge that halfnut 33 and feed screw 31 are not engaged, even if make motor 32 rotate for eliminating this malocclusion in step SB4, when halfnut 33 and feed screw 31 are not still engaged, likely then that exception etc. appears in feed screw 31 or halfnut 33, therefore, enter step SB7, equally with step SB2 to give the alarm.
When judging that in step SB6 halfnut 33 and feed screw 31 are engaged, enter step SB8, start administration.
Bright as noted earlier, micro-injection pump 1 relevant according to the present embodiment, such as after the position in adjustment piston press portion 20 makes it aim at installed syringe, against each other between the tabular surface of ridge 31a, 33a of feed screw 31 and halfnut 33, when halfnut 33 is not snapped at feed screw 31, control device A makes motor 32 rotate.Whereby, feed screw 31 rotates, by the rotation of this feed screw 31, and the abutment portion relative movement in the axial direction of the ridge 31a of feed screw 31 and the ridge 33a of halfnut 33.By the relative movement of this abutment portion, halfnut 33 is snapped at feed screw 31.Therefore, cause in the reason of feed screw 31 and halfnut 33 malocclusion, between ridge 31a, 33a, the reason of this minor failure against each other is excluded automatically, and the occurrence frequency of malocclusion reduces.Whereby, the operability of user can be improved, and the generation of the not enough situation of administration can be avoided.
In addition, when being judged as syringe is installed in step SA1, in step SA2, make motor 32 rotate, thus significantly can reduce the occurrence frequency of malocclusion.
In addition, when detecting that in step SB1 the installment state of syringe is normal, detect interlocking pattern in step SB3 after, carry out motor drived control, therefore, can control accurately according to the installment state of syringe.
Carry out motor drived control in step SB4 after; when detecting that in step SB6 halfnut 33 is not snapped at feed screw 31; in step SB7, notify malocclusion, thus can notify that driving mechanism 30 exception or syringe are installed abnormal as early as possible, improve safety.
Make feed screw 31 to piston press sideway swivel when the motor drived control of step SA2 or step SB4, thus can prevent patient from blood back occurring.
In addition, as the rotation amount of motor 32 in motor drived control, feed screw 31 preferably can be made to rotate the rotation amount of at least half-turn.Whereby, can revise most occlusion.In addition, also motor 32 can be made to rotate the stipulated time when motor drived control.
In addition, also control device A can be formed in such a way: when motor drived control, during motor 32 rotates, when utilizing photoelectric sensor 40 to detect that halfnut 33 is snapped at feed screw 31, before reaching at the rotation amount of motor 32 rotation amount preset, motor 32 is stopped the rotation.Whereby, during can suppressing motor drived control, the piston of syringe moves, and can carry out administration more safely.
In addition, when motor drived control, motor 32 also can be made to rotate to the opposition side of piston press side.In this case, the rotation amount of motor 32 is preferably reduced.
In addition, in above-mentioned flow chart, only carry out No. 1 motor drived control, compare with the situation of carrying out more than 2 times, the probability pressing piston redundantly can be reduced, thus the medicinal liquid injecting more than scheduled volume can be prevented.Also can carry out more than 2 times motor drived control, in this case, preferably reduce the rotation amount of motor 32.
In addition, also can control as follows: when motor drived control, make motor 32 to piston press sideway swivel, and then make it reverse.
Above-mentioned embodiment is all illustrate in all fields, restrictively cannot explain the present invention.Moreover, belong to the distortion in claims equivalency range, change all within the scope of the invention.
Industrial applicibility
As mentioned above, the control method of the present invention's micro-injection pump of being correlated with and micro-injection pump goes for the situation at the on-the-spot liquid medicine injection of medical treatment.
Description of reference numerals
1 micro-injection pump
10 housings
20 piston press portions
30 driving mechanisms
31 feed screws
32 motors
33 halfnuts
34 changer levers (switching member)
40 photoelectric sensors (interlocking pattern testing agency)
41 syringe size detecting sensors (syringe installment state testing agency)
42 flange detecting sensors (syringe installment state testing agency)
43 piston detecting sensors (syringe installment state testing agency)
A control device
Claims (7)
1. a micro-injection pump, it possesses: piston press portion, and its pressing is filled with the piston of the syringe of liquid;
Driving mechanism, it drives above-mentioned piston press portion; And
Control device, it controls above-mentioned driving mechanism; The feature of described micro-injection pump is,
Above-mentioned driving mechanism possesses: feed screw, make the motor that this feed screw rotates, be snapped at the halfnut of above-mentioned feed screw, and for this halfnut is being snapped at the switching member carrying out between the state of above-mentioned feed screw and the state leaving above-mentioned feed screw switching;
Above-mentioned control device is configured to: possess for detecting the syringe installment state testing agency whether being provided with syringe, when utilizing this syringe installment state testing agency to detect to be provided with syringe, carries out motor drived control to drive said motor.
2. micro-injection pump according to claim 1, is characterized in that,
Above-mentioned control device is configured to: possess the interlocking pattern testing agency whether being snapped at above-mentioned feed screw for detecting above-mentioned halfnut, when utilizing this interlocking pattern testing agency to detect that above-mentioned halfnut is not snapped at above-mentioned feed screw, carry out motor drived control.
3. micro-injection pump according to claim 2, is characterized in that,
Said syringe installment state testing agency is configured to: whether the installment state detecting syringe is normal;
Above-mentioned control device is configured to: after the installment state utilizing said syringe installment state testing agency to carry out syringe detects, when detecting that the installment state of syringe is normal, utilize above-mentioned interlocking pattern testing agency to detect.
4. the micro-injection pump according to Claims 2 or 3, is characterized in that,
Above-mentioned control device is configured to: possess for notifying that above-mentioned halfnut is not snapped at the notice mechanism of above-mentioned feed screw, after carrying out said motor drived control, above-mentioned interlocking pattern testing agency is utilized again to detect, when utilizing this interlocking pattern testing agency to detect that above-mentioned halfnut is not snapped at above-mentioned feed screw, utilize the above-mentioned halfnut of above-mentioned notice authority notification and above-mentioned feed screw malocclusion.
5. the micro-injection pump according to any one of claim 2 to 4, is characterized in that,
Above-mentioned control device is configured to: in said motor drived control, during said motor rotates, when utilizing above-mentioned interlocking pattern testing agency to detect that above-mentioned halfnut is snapped at above-mentioned feed screw, said motor is stopped the rotation.
6. micro-injection pump according to any one of claim 1 to 5, is characterized in that, said motor drived control makes above-mentioned feed screw to the control of piston press sideway swivel.
7. a control method for micro-injection pump, described micro-injection pump possesses: piston press portion, and its pressing is filled with the piston of the syringe of liquid; And
Driving mechanism, it drives above-mentioned piston press portion;
Above-mentioned driving mechanism has: feed screw, make the motor that this feed screw rotates, be snapped at the halfnut of above-mentioned feed screw, and for this halfnut is being snapped at the switching member carrying out between the state of above-mentioned feed screw and the state leaving above-mentioned feed screw switching; The control method of described micro-injection pump is characterised in that,
Detect after whether syringe being installed,
When being provided with syringe, driving said motor, thus above-mentioned feed screw is rotated.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013056178 | 2013-03-19 | ||
| JP2013-056178 | 2013-03-19 | ||
| PCT/JP2014/001592 WO2014148052A1 (en) | 2013-03-19 | 2014-03-19 | Syringe pump and syringe pump control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105339021A true CN105339021A (en) | 2016-02-17 |
| CN105339021B CN105339021B (en) | 2018-05-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480021138.8A Expired - Fee Related CN105339021B (en) | 2013-03-19 | 2014-03-19 | The control method of micro-injection pump and micro-injection pump |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6378668B2 (en) |
| CN (1) | CN105339021B (en) |
| SG (1) | SG11201507747RA (en) |
| WO (1) | WO2014148052A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109481782A (en) * | 2018-12-29 | 2019-03-19 | 深圳市好克医疗仪器股份有限公司 | Syringe pump |
| CN109675142A (en) * | 2018-12-26 | 2019-04-26 | 中南大学湘雅医院 | A kind of ICU section micro-injection pump installation |
| CN110267696A (en) * | 2017-02-08 | 2019-09-20 | 株式会社根本杏林堂 | The manufacturing method of injection device, actuator and injection device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7474191B2 (en) * | 2018-03-02 | 2024-04-24 | ミネベアミツミ株式会社 | Detection mechanism and syringe pump |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5954697A (en) * | 1998-03-02 | 1999-09-21 | Srisathapat; Chad | Threaded nut syringe plunger for use with a medication infusion pump |
| JP3120747B2 (en) * | 1997-02-12 | 2000-12-25 | 富士電機株式会社 | Syringe pump clutch mechanism |
| CN2566870Y (en) * | 2002-09-05 | 2003-08-20 | 北京思路高高科技发展有限公司 | Target control injection pump |
| CN1817375A (en) * | 2006-03-17 | 2006-08-16 | 浙江大学医学仪器有限公司 | Alarming transmission device for syring inaccurate installation |
| CN201042546Y (en) * | 2007-02-08 | 2008-04-02 | 林美娟 | Propulsion mechanism of microinjection pump |
| CN102266602A (en) * | 2010-12-31 | 2011-12-07 | 北京谊安医疗系统股份有限公司 | Real-time detection mechanism of injection system, and injection system with same |
| CN202086876U (en) * | 2011-05-23 | 2011-12-28 | 俞宪能 | Opening and closing device of lead screws and nuts for injection pump |
| CN202236677U (en) * | 2011-08-26 | 2012-05-30 | 深圳圣诺医疗设备有限公司 | Injection pump system |
| CN202526704U (en) * | 2012-02-28 | 2012-11-14 | 四川绵竹鸿基制药有限责任公司 | Medical liquid preparation apparatus |
| CN102887473A (en) * | 2012-09-21 | 2013-01-23 | 深圳圣诺医疗设备有限公司 | Sliding block control structure and injection pump advancing device comprising same |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3048545U (en) * | 1997-10-31 | 1998-05-15 | 船井電機株式会社 | Slide feeder |
| JP2000090600A (en) * | 1998-09-11 | 2000-03-31 | Kenwood Corp | Optical pickup feeding mechanism for mini disk reproducing device |
| JP2000350782A (en) * | 1999-06-10 | 2000-12-19 | Terumo Corp | Syringe pump and injecting method |
| JP6058873B2 (en) * | 2010-08-04 | 2017-01-11 | 株式会社根本杏林堂 | Portable injection device and control method of portable injection device |
-
2014
- 2014-03-19 JP JP2015506613A patent/JP6378668B2/en active Active
- 2014-03-19 SG SG11201507747RA patent/SG11201507747RA/en unknown
- 2014-03-19 CN CN201480021138.8A patent/CN105339021B/en not_active Expired - Fee Related
- 2014-03-19 WO PCT/JP2014/001592 patent/WO2014148052A1/en active Application Filing
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3120747B2 (en) * | 1997-02-12 | 2000-12-25 | 富士電機株式会社 | Syringe pump clutch mechanism |
| US5954697A (en) * | 1998-03-02 | 1999-09-21 | Srisathapat; Chad | Threaded nut syringe plunger for use with a medication infusion pump |
| CN2566870Y (en) * | 2002-09-05 | 2003-08-20 | 北京思路高高科技发展有限公司 | Target control injection pump |
| CN1817375A (en) * | 2006-03-17 | 2006-08-16 | 浙江大学医学仪器有限公司 | Alarming transmission device for syring inaccurate installation |
| CN201042546Y (en) * | 2007-02-08 | 2008-04-02 | 林美娟 | Propulsion mechanism of microinjection pump |
| CN102266602A (en) * | 2010-12-31 | 2011-12-07 | 北京谊安医疗系统股份有限公司 | Real-time detection mechanism of injection system, and injection system with same |
| CN202086876U (en) * | 2011-05-23 | 2011-12-28 | 俞宪能 | Opening and closing device of lead screws and nuts for injection pump |
| CN202236677U (en) * | 2011-08-26 | 2012-05-30 | 深圳圣诺医疗设备有限公司 | Injection pump system |
| CN202526704U (en) * | 2012-02-28 | 2012-11-14 | 四川绵竹鸿基制药有限责任公司 | Medical liquid preparation apparatus |
| CN102887473A (en) * | 2012-09-21 | 2013-01-23 | 深圳圣诺医疗设备有限公司 | Sliding block control structure and injection pump advancing device comprising same |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110267696A (en) * | 2017-02-08 | 2019-09-20 | 株式会社根本杏林堂 | The manufacturing method of injection device, actuator and injection device |
| CN109675142A (en) * | 2018-12-26 | 2019-04-26 | 中南大学湘雅医院 | A kind of ICU section micro-injection pump installation |
| CN109481782A (en) * | 2018-12-29 | 2019-03-19 | 深圳市好克医疗仪器股份有限公司 | Syringe pump |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2014148052A1 (en) | 2017-02-16 |
| SG11201507747RA (en) | 2015-10-29 |
| WO2014148052A1 (en) | 2014-09-25 |
| JP6378668B2 (en) | 2018-08-22 |
| CN105339021B (en) | 2018-05-29 |
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Address after: Hiroshima Japan Applicant after: JMS Co.,Ltd. Applicant after: NAMIKI PREC SINGAPORE Pte. Ltd. Applicant after: NAMIKI SEIMITSU HOUSEKI KABUSHIKIKAISHA Address before: Hiroshima Japan Applicant before: JMS Co.,Ltd. Applicant before: NAMIKI PREC SINGAPORE Pte. Ltd. Applicant before: NAMIKI SEIMITSU HOUSEKI Kabushiki Kaisha |
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