CN100554685C - Comprise and being used for and the pipe supporting member of cooperating and the peristaltic pump of counterpart - Google Patents
Comprise and being used for and the pipe supporting member of cooperating and the peristaltic pump of counterpart Download PDFInfo
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- CN100554685C CN100554685C CNB2005100814373A CN200510081437A CN100554685C CN 100554685 C CN100554685 C CN 100554685C CN B2005100814373 A CNB2005100814373 A CN B2005100814373A CN 200510081437 A CN200510081437 A CN 200510081437A CN 100554685 C CN100554685 C CN 100554685C
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- Prior art keywords
- peristaltic pump
- counterpart
- pipe
- supporting member
- moving jaws
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
- F04B49/065—Control using electricity and making use of computers
Abstract
Peristaltic pump (1) comprising: a force transducer (53,57), and it is used to survey applied force between supporting member (19) and the counterpart (24), and a pipe (6) remains between supporting member (19) and the counterpart (24); And a processing unit, the device whether it predetermined condition that comprises that the signal that is used for providing according to force transducer (53,57) determines that expression pipe (6) is correctly located between supporting member (19) and counterpart (24) has satisfied.
Description
Technical field
Present invention relates in general to the peristaltic pump field.
Say that especially it relates to a kind of peristaltic pump that comprises supporting member and counterpart, the tube grip that described peristaltic pump must act on is between described supporting member and described counterpart.
Background technique
Peristaltic pump especially for medical field is a kind of like this pump, and promptly it is provided with the rotor of band roller, and described roller is the cross section of pressure elasticity pipe gradually, so that liquid moves along described pipe.
Therefore, this peristaltic pump be used for not with situation that liquid contacts under, only make flow of fluid in the pipe by the operation pipe.Therefore, such peristaltic pump is applicable to and requires liquid for example to remain in the closed atmosphere any application of being polluted when avoiding working in gnotobasis.Peristaltic pump is generally suitable for operating in the unusual important environment of aseptic notion.Therefore, described peristaltic pump not only must be realized making flow of fluid and prevent that liquid is subjected to the function of environmental pollution, but also must avoid the pollution of pump to environment itself.Therefore, each member of peristaltic pump must be easy to clean, must guarantee to have good sealing simultaneously, for easy to clean, makes each member all detachably comparatively suitable.
Peristaltic pump generally includes a rotor and a moving jaws, wherein, described rotor comprises roller in its periphery, described moving jaws can be shown in an open position with closed position on, on described open position, described moving jaws moves away from described rotor, thereby, the resiliently deformable pipe that described peristaltic pump must act on can be placed between described moving jaws and the described rotor, on described closed position, described moving jaws moves to described rotor, thereby described pipe is clamped between at least one roller of curved surface on the described moving jaws and described rotor.
Above-mentioned this peristaltic pump is known for everybody in the prior art, wherein, described moving jaws comprises an excrescence that is formed by supporting member, and the pump housing is provided with a counterpart of settling like this, promptly when described moving jaws is on its open position, described support distal moves from described counterpart, when described moving jaws is on its closed position, described supporting member moves to described counterpart, thereby, when a pipe was assemblied in the described peristaltic pump, it was clamped between described supporting member and the described counterpart.But this holding action has the function of holding tube in the peristaltic pump operating process usually.
Whether the described pipe of visual examination was correctly located between described rotor and described moving jaws when present obtainable peristaltic pump usually can be on described moving jaws be in the closed position.Similarly, also can in the upstream of described peristaltic pump and/or the downstream side be visual or monitor automatically whether the liquid in the described pipe correctly flows.
Summary of the invention
The objective of the invention is to improve the peristaltic pump of the above-mentioned type.
For this reason, the invention provides a kind of peristaltic pump, it comprises a rotor and a moving jaws that roller is housed, and described moving jaws is provided with a supporting member, and can be in upper/lower positions:
Open position, on described open position, described moving jaws moves away from described rotor, therefore described supporting member also can move away from the fixing counterpart on the described peristaltic pump this moment, like this, the pipe that described peristaltic pump must act on can be assemblied between described moving jaws and the described rotor on the one hand, can be assemblied on the other hand between described supporting member and the described counterpart, and
Closed position, on described closed position, described moving jaws approaches described rotor and moves, thereby, described supporting member is moved to described counterpart, and like this, described pipe will be clamped between at least one roller of the curved surface of described moving jaws and described rotor on the one hand, can be clamped on the other hand between described supporting member and the described counterpart
Described peristaltic pump is characterised in that it also comprises:
A force transducer, it is used to survey applied force between described supporting member and the described counterpart; And
A processing unit, the device whether it predetermined condition that comprises that the signal that is used for providing according to described force transducer determines that the described pipe of expression is correctly located between described supporting member and described counterpart has satisfied.
Therefore, above-mentioned this peristaltic pump at any time all can obtain the information of relevant described pipe applied force when described pipe is assemblied in the described peristaltic pump.Represent that the above-mentioned power of combined elastic of the liquid that described Guan Yuqi carries and various measurement or monitoring parameter all can monitor in this way.
At first, described force transducer can provide about whether applying strong information between described supporting member and the described counterpart.
Therefore, described processing unit can obtain to represent that described pipe is whether in place and not be in the information that occurs misoperation on the appropriate location between described supporting member and the described counterpart owing to described pipe.
In order to obtain best result, described force transducer can be integrally formed in the described counterpart.
In this case, described counterpart can comprise one first assembly, and described first assembly comprises:
A base portion, it is provided with the device that is used to be fixed on the described peristaltic pump;
A test body, it comprises a curved part, and is rigidly connected on the described base portion by the one end, and comprises a contact on its other end; And
A foil gauge, it is attached on the described curved part of described test body.
Described counterpart also can comprise one second assembly, and it is identical with described first assembly, and is independent of described first assembly, so that two paths of binary channel pipe are carried out independent measurement.
According to a preferred feature of the present invention, described processing unit comprises a storage, wherein storing signal-pressure coefficient, and described processing unit is used for handling according to described signal-pressure coefficient the value of the signal that is provided by described force transducer, to obtain the pressure of flowing liquid in the described pipe.
Therefore, described force transducer can provide the information about the pressure of flowing liquid in described pipe.Then, described processing unit can obtain the scale factor by the power of liquid-pressure pick-up measurement.Therefore, above-mentioned this peristaltic pump can demonstrate the instantaneous pressure of flowing liquid in described pipe.
In order to improve measurement, can adopt following technical characteristics independently of one another:
Described processing unit can comprise a module that is used to compensate the creep of described pipe, and it can be used for periodically measuring the value of the signal that is provided by described force transducer and dynamically recalibrates described force transducer according to the minimum measured value of described signal;
Described processing unit can comprise a module that is used for the pulsation of the described peristaltic pump of filtering;
Described peristaltic pump can comprise an electronic shutoff device, and it is used for closing described moving jaws with variable velocity;
Described shutoff device can provide first or closing speed and second or the closing velocity lower than described closing speed;
Described contact can have one and be used for the flat supporting surface that contacts with described pipe; And
Described contact can be a rigid pipe that is connected on the described test body.
And by means of the following technical characteristics that can adopt independently of one another, described peristaltic pump can have other additional functions:
Described processing unit can be used for making the rotating speed of described rotor to be limited by the signal that described force transducer provides; And
Described processing unit is used in and stops described peristaltic pump when applied force surpasses predetermined threshold between described supporting member and the described counterpart.
Description of drawings
By referring to accompanying drawing and the following description that a preferred embodiment of the present invention that provides as limiting examples is done, other technologies feature and advantage of the present invention will become apparent, and accompanying drawing comprises:
Fig. 1 is the peristaltic pump of beamhouse operation and the perspective view of annex thereof;
Fig. 2 is the face upwarding view of protective cap that is placed on the top of described peristaltic pump shown in Figure 1;
Fig. 3 is the plan view of described peristaltic pump when described protective cap shown in Figure 2 has been pulled down shown in Figure 1;
Fig. 4 shows the visible rotor that roller is housed in top of the described peristaltic pump in Fig. 3;
Fig. 5 is the view similar to Fig. 3 when described rotor shown in Figure 4 has been pulled down;
Fig. 6 is the different perspective view of described peristaltic pump shown in Figure 1;
Fig. 7 is the view of the larger proportion of the empty frame part of V II among Fig. 6;
Fig. 8 is the longitudinal cross-section view on the top of the described peristaltic pump shown in Fig. 1 and 6, shows the placement of described pipe in described protective cap;
Fig. 9 is a perspective view, shows the hand assembled that makes described pipe be arranged in the described peristaltic pump shown in Fig. 1 and 6;
Figure 10 is the diagrammatic view similar to Fig. 9, shows the lateral adjustment of described pipe shown in Figure 9;
Figure 11 is the perspective view of the pump cover of described peristaltic pump shown in Figure 3;
Figure 12 is the perspective view similar to Figure 11, also shows described moving jaws shown in Figure 2;
Figure 13 be described assembly shown in Figure 12 one by roller is housed described rotor and the cross-sectional side elevational view on the plane of the cam that activates described moving jaws;
Figure 14 to 16 is plan views of described pump cover shown in Figure 12, shows the described moving jaws that is on the diverse location;
Figure 17 to 19 is respectively the view when the below of counterpart shown in Figure 12, side and the place ahead are seen, this counterpart is in the face of the supporting member of described moving jaws;
Figure 20 to 22 shows described counterpart in the mode similar to Figure 17 to 19, but what illustrate is to receive a situation after the Sealing that is used to seal described counterpart;
Figure 23 is the view of the longitudinal section of described counterpart shown in Figure 180, shows the cooperation relation between described counterpart, described supporting member and the described pipe, and this cooperation relation sees cross section in the figure; And
Figure 24 is the layout of expression described force transducer and described processing unit and they and the block diagram that is connected of some element of described peristaltic pump.
Embodiment
Fig. 1 shows the peristaltic pump 1 under a kind of application.
In the present embodiment, peristaltic pump 1 comprises annex, for example bottle stand 2 and liquid suction 3.This structure is used for by pipe liquid that bottle 4 is contained to two container 5 pumpings, and an end of described pipe is connected with bottle 4, and the other end is connected with container 5.
In above-mentioned example, pipe 6 comprises the path of two separation, and described two paths seal toward each other, and is connected to each other by the thing cover 7 that vertically spins that is easy to cut.
Fig. 2 is the face upwarding view of the protective cap 12 pulled down from peristaltic pump 1.Protective cap 12 comprises an involucrum 13 that is the cover cap form, and it is used for the movable component that cover cap pump cover 11, contacts them to prevent the user.Involucrum 13 comprises a straight trough 14, and it has the width that pipe 6 is slided therein.
A moving jaws 15 is fixed on the inwall of involucrum 13 by three screws 16.The overall shape of moving jaws 15 is a crescent-shaped, and the inwall of its curved part comprises a curved surface 17 that is circular shape.At each opposition side of described supporting surface 17, moving jaws 15 comprises a tooth 18 and a supporting member 19, and both are used to and manage 6 and cooperate as supporting surface 17.
Moving jaws 15 also comprises a hole 20 of passing the wall (see figure 1) of involucrum 13.
The circular hole 21 that is communicated with slotted hole 22 is formed in the thickness of moving jaws 15 equally.In Figure 13 of the section that shows slotted hole 22, obviously, slotted hole 22 comprises a step 22 ' at the roughly interior thickness place of moving jaws 15.Circular hole 21 does not comprise above-mentioned this step.
Fig. 3 shows the pump cover 11 when protective cap 12 has been pulled down.Pump cover 11 is plate shape, and 24, stop pin 25 of a counterpart (counter-member) and an axle 23 are installed on it regularly, and described axle 23 is used for being inserted in the hole 20 of moving jaws 15, so that described moving jaws rotates.
Fig. 4 shows the rotor of having pulled down from peristaltic pump 1 that roller is housed 26.Rotor 26 comprises two flanges 29, and three cylindrical roller 30 and two centering rollers 31 are installed between them, and described cylindrical roller 30 is even each other 120 ° of layouts at interval on the circumferential profile of flange 29.
Flange 29 as upper flange in Fig. 4 comprises a platform 32.
The layout of cylindrical roller 30, centering roller 31 and platform 32 is found among Figure 14.
Fig. 5 shows the described pump cover shown in Figure 3 when rotor 26 is pulled down.The figure shows a live axle 33, it drives rotor 26 and rotates, to realize the function of tonic chord of peristaltic pump 1.
Fig. 6 is the side perspective of peristaltic pump 1, and the empty frame part of V II among this figure shows the cooperation relation of pipe 6 and protective cap 12.
Fig. 7 is the view of the larger proportion of the empty frame part of V II among Fig. 6, and it shows the part that pipe 6 in interlock in the straight trough 14.The above-mentioned part of straight trough 14 is limited by the bottom 35 that is circular shape and two sidewalls of facing 36.Each sidewall in these sidewalls 36 includes 37, two boss 37 of a positive stop lug boss and settles face-to-face.
The above-mentioned part of visible straight trough 14 forms a locating piece among Fig. 7, and it is used for when pipe 6 is squeezed in wherein receiving tube 6 and makes the described pipe can be with respect to it along extending the longitudinal axis slip parallel with self.
Should be understood that, be squeezed in the above-mentioned part of straight trough 14 (see figure 9) to obtain assembly shown in Figure 7 if will manage 6, at first, till making pipe 6 slide into its underpass downwards always and boss 37 contacts along sidewall 36, boss 37 has produced one and has clamp-oned the hard spot (hard point) that must overcome fully for managing 6.Then, the user continues extruded tube 6, thereby can make the described underpass generation resiliently deformable of described pipe, and then, can make described underpass arrive the position of facing bottom 35.Spinning on thing cover 7 positions that are between two boss 37 of pipe 6, like this, just can be in straight trough 14 spacing to managing 6 on as shown in Figure 7 the direction of described part.
Although it is spacing in the housing case of described underpass by boss 37 to manage 6 described underpass, manage 6 and described locating piece between still maintain the gap, thereby, can make pipe 6 that foregoing slip (see figure 10) takes place.
Fig. 8 shows the cross section of the position of the pipe of just having described 6.
Figure 11 is the perspective view of the pump cover 11 in Fig. 3 structure.
Figure 12 shows the pump cover 11 when having assembled moving jaws 15; This described moving jaws that illustrates separates with protective cap 12, and purpose is that moving jaws 15 and the cooperation relation that is installed in the member on the pump cover 11 are shown.
Figure 13 is the viewgraph of cross-section of described assembly shown in Figure 12, and it shows the installation of plate 27 on pump cover 11 especially.
Figure 14 to 16 is at moving jaws 15 to be referred to that by off-centre bar 28 is the plan view of the described assembly shown in Figure 12 on three specific positions limiting of the position, angle of plate 27 time.
Off-centre shown in Figure 14 refers to that bar 28 is in can make moving jaws 15 be assemblied in position on the pump cover 11.
In Figure 15, moving jaws 15 is on the position identical with Figure 14, but off-centre refers to that bar 28 is in its lockable moving jaws 15 and prevents that moving jaws 15 is from the position that pump cover 11 is extracted.
Shown in Figure 16 is described moving jaws when referring to that by off-centre bar 28 cuts out.
Sequential positions shown in Figure 14 to 16 can not see that in the normal use of peristaltic pump 1 this zone by protective cap 12 cover caps that are assemblied in moving jaws 15 tops under the normal condition from the outside.
Figure 17 to 19 is mounted in the various different views of the counterpart 24 on the pump cover 11.
Referring to Figure 19, described counterpart comprises that one is gone up test body 41, following test body 42 and two flanges 43, and described two flanges 43 are joined to one another test body 41,42, and their shape is accompanyed or follow in the profile of test body 41,42.
Figure 18 shows the shape of the flange 43 of the sidewall that forms counterpart 24.Flange 43 is rigidly fixed on each test body 41,42 by a locating stud 44 and a set screw 45.
Figure 17 is a worm's eye view, also shows the surface that is fixed on the following test body 42 on the pump cover 11.Described surface comprises a cable eyelet 46 between two tapped holes 47 on each boss 48.
Be assembled under the situation in place at the locating stud 44 and the screw 45 that test body 41,42 are fixed on the flange 43, then test body 41,42 just can deform when contact 49,50 applies power.
Figure 20 to 22 is views similar to Figure 17 to 19 of counterpart 24; At this, counterpart 24 comprises an elastomer seal 51, and it is packed in flange 43 and is assembling in the space between the test body 41,42 of contact 49,50.The elasticity of described elastomer seal can provide seal action, simultaneously, test body 41,42 and flange 43 is relatively moved.The material of elastomer seal 51 must have with test body 41,42 compares insignificant rigidity with flange 43. Test body 41,42 can be that 45 high strength martensitic stainless steel is made by for example meeting French Standard AFNORZ40CNV 14 and being become HRC hardness by tempering/annealing in process, and flange 43 and contact 49,50 can be made by common stainless steel; In this case, elastomer seal 51 can be made by silicone.Generally speaking, all can clog such Sealing in all spaces between test body 41,42, contact 49,50 and the flange 43 and the eyelet, to obtain excellent sealing.
Figure 23 is the side view of the longitudinal section of counterpart 24, shows the shape of test body 41,42.
Each described test body comprises that respectively 52, one curved parts 53 of a base portion extend from described base portion 52, and described curved part 53 has a dovetail tongue-and-groove 54 in its end, and wherein the dovetail joint 55 on the corresponding contact 49,50 in interlock.Each base portion 52 comprises the transverse holes 56 and the eyelet 56 ' that is used for fixing the rear wall (not shown) that are used to insert locating stud 44 and screw 45 respectively.
Each test body 41,42 all has a foil gauge 57, and it is fixed on the inwall of curved part 53.Foil gauge 57 is used to measure the distortion of the curved part 53 that they install.This distortion can take place when applying power on one on the pump cover 11 and in contact 49,50 by the screw that is screwed in the tapped hole 47 in counterpart 24.
The distortion of curved part 53 that should be pointed out that the distortion of curved part 53 of a described test body and another described test body is relatively independent, and this is because test body 41,42 only connects at their base portion 52 places by means of flange 43.
Described foil gauge can for example connect into Wheatstone bridge in well-known mode in the mechanical engineering field.
Cable (not shown) by cable eyelet 46 couples together the control circuit of each foil gauge 57 with peristaltic pump 1.
Figure 24 is the diagram of processing unit 58, described processing unit 58 and counterpart 24 and each member of peristaltic pump 1 for example drive rotor 26 motor, drive eccentric refer to the motor of bar 28, peripheral input device for example control key 10 and peripheral output devices for example display device 9 be connected.
Processing unit 58 comprises that the module 59, one of a creep that is used for expansion pipe 6 are used to control the module of closing 60 of moving jaws 15 and the module 61 of a pulsation that is used for filtering peristaltic pump 1.
The operation of described processing unit will be described below, and its function can provide by suitable electronic circuit or by data programmed treatment device aptly.
Just peristaltic pump 1 mode of describing as described below is operated.
When peristaltic pump 1 starts; moving jaws 15 be in corresponding position shown in Figure 15, the position of the protective cap 12 shown in Fig. 9 and 10 on; and rotor 26 also is on the position shown in Figure 15, and platform 32 settles like this, promptly can form a linear passages between rotor 26 and moving jaws 15.Then, the locating piece of protective cap 12 and described linear passages align.
At first, pipe 6 is assembled on the peristaltic pump 1.For this reason, as shown in Figure 9, the user is with the hands gripping and is managing 6, is inserted into then in the straight trough 14.Because the existence of boss 37, as previously mentioned, for making on the correct position of managing in 6 locating pieces that arrive as shown in Figure 7 on the every end that is formed on straight trough 14, the above-mentioned extrusion operation in this operating method must overcome a hard spot.
Referring to Figure 10, the user then can be along either direction lateral sliding pipe 6, with basis and the length available of the pipe 6 annex (see figure 1) adjustment pipes 6 that are connected at the either side of protective cap 12.
In case implemented to finish aforesaid operations, the user just needn't consider to manage 6 orientation problems in peristaltic pump 1 again.
Use control key 10, show that the user wishes to start peristaltic pump 1, thereby, can rotate by means of its drive systems plate 27, and till moving jaws 15 arrives position shown in Figure 16, on this position, the tooth 18 of moving jaws 15 will be managed 6 the thing that spins and be overlapped 7 crampings on stop pin 25.
When arriving above-mentioned position, motor stall also causes high current.When detecting Peak current, motor stops.
When moving jaws 15 was closed, pipe 6 can be wrapped on the rotor 26, can slide in the described locating piece of protective cap 12 as requested simultaneously.
On the one hand by the cooperating of tooth 18 and locating stud 25, and on the other hand by the cooperating of supporting member 19 and counterpart 24, manage 6 either sides that can remain on rotor 26 at last, they lightly clamping and manage two paths of 6.
Owing to comprise that the system of worm gear 39 and worm screw 40 has irreversible drive characteristics, therefore, moving jaws 15 can remain on this closed position.The pitch of these members and helix angle are chosen in well-known mode in the mechanical engineering technology, thereby the rotation of worm screw 40 can drive worm gear 39, rotate but the rotation of worm gear 39 can not drive worm screw 40.
When pipe 6 inserted by this way, because roller 30 is mobile, rotor 26 can rotate, and begins to flow so that manage liquid contained in 6.
When peristaltic pump 1 just in the running; because moving jaws 15 is on the position shown in Figure 16; promptly on this position, the off-centre in the slotted hole 22 in the moving jaws 15 refer to that bar 28 and step 22 ' can prevent the separating of combination of described moving jaws and described protective cap, therefore can guarantee user's safety.When moving jaws 15 is on the position shown in Figure 15, promptly when motionless but peristaltic pump 1 power of rotor 26 improves, also protective cap 12 can not be pulled down.
On the other hand, when peristaltic pump 1 power descended, off-centre referred to that bar 28 can return to position shown in Figure 14, can remove the combination of described moving jaws and described protective cap like this, for example can clean the member of pump cover 11.
When described pipe has assembled and has made described pump cover to be in position shown in Figure 16, described processing unit at first confirm tube 6 existence and obtained correct placement.For this reason, the distortion of curved part 53 must by confirm counterpart 24 with in the closed position on the supporting member 19 of moving jaws 15 between distance confirm less than the width (seeing Figure 23) of managing 6.
If do not detect the existence of pipe 6, then peristaltic pump 1 can not start, and can demonstrate error message.
When described pipe is correctly located and described pump when operating, processing unit 58 can provide the instantaneous pressure of the liquid in each path independent of each other of pipe 6 to described peripheral output devices.
Described signal-pressure coefficient dependence experience in the following manner in the pre-calibration stage determines, a Guan Bingxiang with known features promptly is installed in peristaltic pump 1, and it applies known pressure.Then, read the voltage of exporting by foil gauge 57; Because the pressure corresponding with above-mentioned known voltage value is known, therefore can determine signal-pressure coefficient.The pipe that can be each new use is determined corresponding signal-pressure coefficient.Mean value can obtain by this way, promptly determines then all are managed effective average signal-pressure coefficient from test result by a plurality of pipes being carried out this test.
Processing unit 58 can use the measuring pressure of the liquid in the pipe 6 to realize following assistance application.
Processing unit 58 also comprises a module 59 that is used for the wriggling of expansion pipe 6, and it can improve measuring reliability.For this reason, module 59 with predetermined distance as every 20 milliseconds to once by the voltage measurement of foil gauge 57 output, and carry out a dynamic calibration, with the reference value of minimum voltage as the calibration zero pressure.
Processing unit 58 also comprises a module 60, and it is used to control closing of moving jaws 15, thereby promptly is used for moving the speed that can make pipe 6 when compression adjusting moving jaws 15 between supporting member 19 and counterpart 24 at moving jaws 15 to its closed position from its open position.Because the elasticity of pipe 6, tensioning moving jaws 15 can disturb pressure measurement too quickly.
Therefore, if interference has been suffered in pressure measurement, module 60 can slow down closing (even off-centre refers to that the motor of bar 28 slows down) of described moving jaws.
Processing unit 58 also comprises a module 61 that is used for the pulsation of filtering peristaltic pump 1.The moving of rotor 26 that acts on pipe 6 in the operating process of peristaltic pump 1 can be interfered the pressure measurement generation cycle, and the rotational frequency of rotor 26 is depended in these interference.
In the present embodiment, the rotating speed of rotor 26 is 240rpm, and rotor comprises three rollers, and described roller is corresponding to the angular frequency of 12Hz.1.5Hz cutoff frequency this moment can limit by suitable R C wave filter; This value has produced good result.
Processing unit 58 also can make the rotating speed of rotor 26 be limited by the measuring pressure of the liquid in the pipe 6.For example, if processing unit 58 has about managing the information of the maximum allowable pressure in 6, the rotating speed of described peristaltic pump can be increased to maximum value earlier, reduces on request when the pressure in pipe 6 approaches its maximum allowable value then.
Similarly, by finding the ANOMALOUS VARIATIONS in the fluid pressure, for example relevant with the obstruction of described pipe incorrect flowing appears in the processing unit 58 detectable liquid that go out to manage in 6.
Can imagine the remodeling body of the described device that employing do not depart from the scope of the present invention.Especially, pipe 6 can comprise single path or more than two path, counterpart comprises the test body identical with number of vias.
Claims (13)
1. peristaltic pump comprises: a rotor, and it is equipped with roller; And a moving jaws, it is provided with a supporting member, and described moving jaws can be shown in an open position and closed position, it is characterized in that:
On described open position, moving jaws moves away from rotor, and the fixing counterpart of support distal on peristaltic pump moves, like this, the pipe that described peristaltic pump must act on can be assemblied between moving jaws and the rotor on the one hand, can be assemblied between supporting member and the counterpart on the other hand, and
On described closed position, moving jaws approaches rotor and moves, and supporting member moves to described counterpart, like this, described pipe will be clamped between at least one roller of the curved surface of moving jaws and rotor on the one hand, can be clamped between supporting member and the counterpart on the other hand
Wherein, described peristaltic pump also comprises:
A force transducer, it is used to survey applied force between supporting member and the counterpart; And
A processing unit, it comprises and is used for determining the device whether predetermined condition of expression pipe correct location between supporting member and counterpart has satisfied at the described signal that provides according to force transducer before pump operated, if and described predetermined condition is not satisfied, then prevent described pump startup.
2. peristaltic pump as claimed in claim 1 is characterized in that, force transducer (53,57) is integrally formed in the counterpart (24).
3. peristaltic pump as claimed in claim 2 is characterized in that, counterpart (24) comprises one first assembly, and described first assembly comprises:
A base portion (52), it is provided with the device (47) that is used to be fixed on the peristaltic pump (1);
A test body (53), it comprises a curved part, and is rigidly connected on the base portion (52) by the one end, and comprises a contact (50) on its other end; And
A foil gauge (57), it is applied on the described curved part of test body (53);
Wherein, described test body (53) and described foil gauge (57) form described force transducer.
4. peristaltic pump as claimed in claim 3 is characterized in that, counterpart (24) comprises one second assembly, and it is identical with described first assembly, and is independent of described first assembly.
5. peristaltic pump as claimed in claim 1, it is characterized in that, processing unit (58) storage, wherein storing signal-pressure coefficient, and described processing unit (58) is used for handling by force transducer (53 according to described signal-pressure coefficient, the value of the signal that 57) provides is to obtain the pressure of flowing liquid in the pipe (6).
6. as the arbitrary described peristaltic pump of claim 1 to 5, it is characterized in that, processing unit (58) comprises a module (59) that is used for the creep of expansion pipe (6), it is used for periodically measuring by force transducer (53, the value of the signal that 57) provides is also dynamically recalibrated force transducer (53,57) according to the minimum measured value of described signal.
7. peristaltic pump as claimed in claim 1 is characterized in that, processing unit (58) comprises a module (61) that is used for the pulsation of filtering peristaltic pump (1).
8. peristaltic pump as claimed in claim 1 is characterized in that, processing unit (58) is used to make the rotating speed of rotor (26) to be limited by the signal that force transducer (53,57) provides.
9. peristaltic pump as claimed in claim 1 is characterized in that, processing unit (58) is used for stopping when applied force surpasses predetermined threshold between supporting member (19) and counterpart (24) peristaltic pump (1).
10. peristaltic pump as claimed in claim 1 is characterized in that, peristaltic pump (1) comprises an electronic shutoff device, and it is used for closing moving jaws (15) with variable velocity.
11. peristaltic pump as claimed in claim 10 is characterized in that, described shutoff device provides first or closing speed and second or the closing velocity lower than described closing speed.
12., it is characterized in that contact (49,50) has one and is used for and the flat supporting surface that contacts of pipe (6) as claim 3 or 4 described peristaltic pumps.
13., it is characterized in that contact (49,50) is a rigid pipe that is connected on the test body (53) as claim 3 or 4 described peristaltic pumps.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0407259A FR2872553B1 (en) | 2004-06-30 | 2004-06-30 | PERISTALTIC PUMP COMPRISING A SUPPORT MEMBER AND A BACK SUPPORT SUITABLE FOR COOPERATING WITH A TUBE |
| FR0407259 | 2004-06-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1715650A CN1715650A (en) | 2006-01-04 |
| CN100554685C true CN100554685C (en) | 2009-10-28 |
Family
ID=34947891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100814373A Active CN100554685C (en) | 2004-06-30 | 2005-06-30 | Comprise and being used for and the pipe supporting member of cooperating and the peristaltic pump of counterpart |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20060002799A1 (en) |
| EP (1) | EP1612423B1 (en) |
| JP (1) | JP4109685B2 (en) |
| CN (1) | CN100554685C (en) |
| AT (1) | ATE438802T1 (en) |
| DE (1) | DE602005015789D1 (en) |
| ES (1) | ES2331193T3 (en) |
| FR (1) | FR2872553B1 (en) |
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| FR2872554B1 (en) * | 2004-06-30 | 2008-09-19 | Millipore Corp | PERISTALTIC PUMP COMPRISING TUBE POSITIONING BODIES |
| US8251954B2 (en) * | 2005-04-27 | 2012-08-28 | Seiko Epson Corporation | Fluid transportation system and method of setting fluid ejection amount |
| JP4924235B2 (en) * | 2006-08-01 | 2012-04-25 | セイコーエプソン株式会社 | Fluid transport system, fluid transport device |
| US8062008B2 (en) | 2007-09-27 | 2011-11-22 | Curlin Medical Inc. | Peristaltic pump and removable cassette therefor |
| US7934912B2 (en) | 2007-09-27 | 2011-05-03 | Curlin Medical Inc | Peristaltic pump assembly with cassette and mounting pin arrangement |
| US8083503B2 (en) | 2007-09-27 | 2011-12-27 | Curlin Medical Inc. | Peristaltic pump assembly and regulator therefor |
| US8517990B2 (en) | 2007-12-18 | 2013-08-27 | Hospira, Inc. | User interface improvements for medical devices |
| DE202009011493U1 (en) * | 2009-08-26 | 2009-11-05 | Astrium Gmbh | peristaltic pump |
| US11578716B2 (en) | 2010-01-22 | 2023-02-14 | Blue-White Industries, Ltd. | Overmolded tubing assembly and adapter for a positive displacement pump |
| US20110180172A1 (en) | 2010-01-22 | 2011-07-28 | Blu-White Industries, Inc. | High pressure, high flow rate tubing assembly for a positive displacement pump |
| US9909579B2 (en) | 2014-06-09 | 2018-03-06 | Blue-White Industries, Ltd. | Overmolded tubing assembly and adapter for a positive displacement pump |
| US8858185B2 (en) | 2010-06-23 | 2014-10-14 | Hospira, Inc. | Fluid flow rate compensation system using an integrated conductivity sensor to monitor tubing changes |
| CA2844807C (en) | 2011-08-19 | 2022-07-26 | Hospira, Inc. | Systems and methods for a graphical interface including a graphical representation of medical data |
| DK2764246T3 (en) | 2011-09-21 | 2019-07-29 | Sanofi Aventis Deutschland | PERISTALTIC PUMP |
| US10022498B2 (en) | 2011-12-16 | 2018-07-17 | Icu Medical, Inc. | System for monitoring and delivering medication to a patient and method of using the same to minimize the risks associated with automated therapy |
| JP6306566B2 (en) | 2012-03-30 | 2018-04-04 | アイシーユー・メディカル・インコーポレーテッド | Air detection system and method for detecting air in an infusion system pump |
| ES2743160T3 (en) | 2012-07-31 | 2020-02-18 | Icu Medical Inc | Patient care system for critical medications |
| US9777720B2 (en) | 2013-03-14 | 2017-10-03 | Blue-White Industries, Ltd. | High pressure, high flow rate tubing assembly and adapter for a positive displacement pump |
| WO2014190264A1 (en) | 2013-05-24 | 2014-11-27 | Hospira, Inc. | Multi-sensor infusion system for detecting air or an occlusion in the infusion system |
| AU2014274122A1 (en) | 2013-05-29 | 2016-01-21 | Icu Medical, Inc. | Infusion system and method of use which prevents over-saturation of an analog-to-digital converter |
| ES2838450T3 (en) | 2013-05-29 | 2021-07-02 | Icu Medical Inc | Infusion set that uses one or more sensors and additional information to make an air determination relative to the infusion set |
| CN103790809A (en) * | 2014-01-17 | 2014-05-14 | 杭州泰林生物技术设备有限公司 | Peristaltic pump system |
| JP6636442B2 (en) | 2014-02-28 | 2020-01-29 | アイシーユー・メディカル・インコーポレーテッド | Infusion systems and methods utilizing dual wavelength optical in-pipe air detection |
| AU2015266706B2 (en) | 2014-05-29 | 2020-01-30 | Icu Medical, Inc. | Infusion system and pump with configurable closed loop delivery rate catch-up |
| US11022108B2 (en) | 2014-07-24 | 2021-06-01 | Merck Patent Gmbh | Rotor device for peristaltic pump |
| US11344668B2 (en) | 2014-12-19 | 2022-05-31 | Icu Medical, Inc. | Infusion system with concurrent TPN/insulin infusion |
| US10850024B2 (en) | 2015-03-02 | 2020-12-01 | Icu Medical, Inc. | Infusion system, device, and method having advanced infusion features |
| EP3454922B1 (en) | 2016-05-13 | 2022-04-06 | ICU Medical, Inc. | Infusion pump system with common line auto flush |
| CA3027176A1 (en) | 2016-06-10 | 2017-12-14 | Icu Medical, Inc. | Acoustic flow sensor for continuous medication flow measurements and feedback control of infusion |
| US11331426B2 (en) * | 2017-03-22 | 2022-05-17 | Icomes Lab Co., Ltd. | Infusion pump |
| US10089055B1 (en) | 2017-12-27 | 2018-10-02 | Icu Medical, Inc. | Synchronized display of screen content on networked devices |
| US20190388918A1 (en) * | 2018-06-25 | 2019-12-26 | Wessol, Llc | Variable pressure sprayer |
| US11278671B2 (en) | 2019-12-04 | 2022-03-22 | Icu Medical, Inc. | Infusion pump with safety sequence keypad |
| WO2022020184A1 (en) | 2020-07-21 | 2022-01-27 | Icu Medical, Inc. | Fluid transfer devices and methods of use |
| US11135360B1 (en) | 2020-12-07 | 2021-10-05 | Icu Medical, Inc. | Concurrent infusion with common line auto flush |
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- 2004-06-30 FR FR0407259A patent/FR2872553B1/en active Active
-
2005
- 2005-06-03 AT AT05291198T patent/ATE438802T1/en not_active IP Right Cessation
- 2005-06-03 ES ES05291198T patent/ES2331193T3/en active Active
- 2005-06-03 EP EP05291198A patent/EP1612423B1/en active Active
- 2005-06-03 DE DE602005015789T patent/DE602005015789D1/en active Active
- 2005-06-21 US US11/157,638 patent/US20060002799A1/en not_active Abandoned
- 2005-06-28 JP JP2005188169A patent/JP4109685B2/en active Active
- 2005-06-30 CN CNB2005100814373A patent/CN100554685C/en active Active
Patent Citations (7)
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| US3918854A (en) * | 1974-06-19 | 1975-11-11 | Alphamedics Mfg Corp | Peristaltic pump |
| US5103211A (en) * | 1989-11-02 | 1992-04-07 | Ivac Corporation | Apparatus for detecting fluid line occlusion |
| US5388972A (en) * | 1994-03-09 | 1995-02-14 | Medical Laboratory Automation, Inc. | Peristaltic pump with removable tubing of precise length |
| US5857843A (en) * | 1995-10-20 | 1999-01-12 | Harvest Technologies Llc | Peristaltic pump with removable rotor |
| US6164920A (en) * | 1996-09-30 | 2000-12-26 | Minnesota Mining And Manufacturing Company | Perfusion system with control network |
| CN2300740Y (en) * | 1997-02-24 | 1998-12-16 | 北京市历元电子仪器技贸公司 | Automatic setting and resetting device for creeping pump pipe |
| US20040037724A1 (en) * | 2000-12-12 | 2004-02-26 | Christian Haser | Peristaltic hose pump |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE438802T1 (en) | 2009-08-15 |
| JP4109685B2 (en) | 2008-07-02 |
| EP1612423B1 (en) | 2009-08-05 |
| FR2872553A1 (en) | 2006-01-06 |
| US20060002799A1 (en) | 2006-01-05 |
| JP2006017123A (en) | 2006-01-19 |
| CN1715650A (en) | 2006-01-04 |
| FR2872553B1 (en) | 2006-09-22 |
| ES2331193T3 (en) | 2009-12-23 |
| EP1612423A1 (en) | 2006-01-04 |
| DE602005015789D1 (en) | 2009-09-17 |
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| C14 | Grant of patent or utility model | ||
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Owner name: EMD MILLIPORE CORPORATION Free format text: FORMER NAME: MILLIPORE CORP. |
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Address after: Massachusetts, USA Patentee after: Millipore Corp. Address before: Massachusetts, USA Patentee before: Millipore Corp. |