CN100509070C - Medicine liquid flow rate controller for infusion set - Google Patents
Medicine liquid flow rate controller for infusion set Download PDFInfo
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- CN100509070C CN100509070C CNB200710106297XA CN200710106297A CN100509070C CN 100509070 C CN100509070 C CN 100509070C CN B200710106297X A CNB200710106297X A CN B200710106297XA CN 200710106297 A CN200710106297 A CN 200710106297A CN 100509070 C CN100509070 C CN 100509070C
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- casing
- infusion set
- flow rate
- liquid flow
- rate controller
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Abstract
The medicine liquid flow rate controller for infusion set includes one casing, one flow pushing device on the casing and with roller, one extruding mechanism matching with the roller in the flow pushing device and mounted on to the casing via a locator for being parallel to the roller, and one elastic unit fixed on the casing and connected to the movable part of the extruding mechanism. The present invention has the features of simple operation, accurate metering, simple structure and low manufacture cost.
Description
Technical field
The present invention is a kind of medicine liquid flow rate controller for infusion set.
Background technology
Venous transfusion is a kind of the most frequently used clinical treatment method, is a drug treatment technology commonly used of nursing speciality.Be equipped with suitable transfusion speed according to medicine is different with patient's situation clinically.Extraordinary patient of in hospital some or special medicaments necessarily require micro-low speed accurately to import, otherwise, if it is too fast to infuse, may cause poisoning, can cause edema and heart failure when more serious; Infusing, it is not enough then may dose to take place slowly, makes treatment influenced and increase unnecessary burden for patient and nursery work.The transfusion of disposable infusion set extension bottle is generally adopted in the routine clinical transfusion, and observes with eyes, relies on the adjusting flow regulator to control the speed that medicine drips.The higher trace of transfusion required precision is infused, and this mode can not reach requirement.The transfusion in the internal medicine of hospital, surgery, department of pediatrics, cardiology department, emergency department and operating room, especially ICU and CCU ward must accurately be infused under many circumstances.For solving the problem of accurate transfusion, lot of domestic and international medical institutions and scientific research institutions have dropped into great amount of manpower and material resources research very early.Commonly used is " finger-like control device " in the market, and it has a camshaft, and a plurality of (being generally 12) cam is arranged on the camshaft, and the characteristics of motion of these cams differs certain angle, and each cam links to each other with one " finger " (being slide block).During work, rotate, slide block is pumped according to a definite sequence and the characteristics of motion, push disposable infusion set successively, make liquid in the tube for transfusion with certain speed directed flow as ripple by the driven by motor camshaft.The device of this structure is because of being to rely on slide block to push the disposable infusion set flexible pipe successively, exist between each slide block at interval, make the flow velocity of medicinal liquid bigger fluctuation occur easily, the change in flow amplitude of transfusion device inner liquid medicine is reached, especially when low speed is infused, be difficult to accomplish accurately; In order to reach better slightly transfusion precision, it needs the transfusion device of the higher special use of supporting cost simultaneously, and the cost of special-purpose transfusion device generally is several times of general infusion set.Big and this two large problems of use cost height of transfusion error is having a strong impact on the use of precision infusion set control device.
Summary of the invention
The present invention be directed to and adopt disposable infusion set in the market the time for patient infusion, rely on the self-contained flow regulator of transfusion device to carry out manual adjustment or rely on existing transfusion device current velocity controller to carry out technology such as medicinal liquid flow rate regulation and all can not accomplish the problem that the flow velocity of disposable infusion set inner liquid medicine is accurately controlled is designed, the object of the present invention is to provide a kind of employing general infusion set and transfusion device is controlled cheaply, can accomplish the accurately medicine liquid flow rate controller for infusion set of control the flow velocity of medicinal liquid in transfusion device flexible pipe outside.The present invention is also applicable to aspect conveying and the meter fluid, and is essentially identical with the disposable infusion set operation principle, as the accurate control of disposable use blood exchange transfusion set velocity of blood flow.
The present invention includes casing and be installed on the casing, the impeller of band roller bearing, have pressing mechanism to cooperate with the roller bearing of impeller, pressing mechanism is installed on the casing by localizer, localizer can make pressing mechanism parallel with roller bearing; The movable part of pressing mechanism is connected with the fixedly connected elastic of casing with an end.During use, make the transfusion device flexible pipe by passing between impeller and the pressing mechanism, start impeller, make its rotation, roller bearing on the impeller acts on the transfusion device flexible pipe, cooperate with pressing mechanism the transfusion device flexible pipe is pushed at interval, thereby the mobile of the liquid in the transfusion device flexible pipe controlled, and then the flow velocity of control medicinal liquid.
Pressing mechanism among the present invention can be various ways, is pressing plate as pressing mechanism, and its localizer is the locating shaft that is arranged on pressing plate one end or middle part, and the other end of pressing plate is connected with elastic.Perhaps described pressing mechanism is a slide block, and its localizer is the guiding mechanism that is fixed on the casing, and this guiding mechanism can be slide rail or structures such as chute or slideway or slide bar.
According to the design needs, the impeller among the present invention can adopt circular configuration, and at this moment, the compressive plane that is mated the pressing mechanism of use can adopt plane or smooth surface.
The impeller outer rim also can be formed by connecting at interval by cambered surface and plane, and an one plane is cooperated with the compressive plane of pressing mechanism, and this moment, compressive plane should adopt plane form.
Impeller of the present invention can adopt prior art, and perhaps adopt a kind of in following several structure: a kind of structure of impeller comprises support and the rack-mount crawler belt that has roller bearing.Another kind of impeller comprises the support that has jack, is loaded in the jack by the roller support bar that has roller bearing, between roller support bar and the jack bottom spring is housed.
For preventing in when work because the motion of impeller makes the displacement of transfusion device flexible pipe, should be in casing or casing be outside equipped with the anti-displacement mechanism of transfusion device flexible pipe, the simplest method promptly is that pipe clamp is set.Pipe clamp can be fixed on the casing, also can be and the isolating mechanism of casing, and it can cooperate the displacement that prevents tube for transfusion with other fixed structure in casing or the casing.During concrete work, can use one or two pipe clamp.
The invention has the beneficial effects as follows, the one, because the form that has adopted the pressing mechanism that has localizer and elastic to combine with the impeller that has roller bearing, guaranteed that pressing mechanism and roller bearing are to the equidistant extruding of transfusion device flexible pipe on its cross-section location, realized that at an easy rate the liquid in the transfusion device flexible pipe is at the place of being extruded all the time by current floe condition, the flowing velocity that makes the transfusion device inner liquid medicine has become the influence that is subjected to the rolling speed of impeller roller bearing on the transfusion device flexible pipe by the influence that is subjected to gravity factors such as the perpendicular differential pressure between the liquid level in transfusion needle and the infusion bottle, thereby changes controllable pulling flow type transfusion into from relying on the gravity type transfusion that is subjected to the extraneous factor influence easily for general infusion set; The 2nd, owing to adopted localizer and elastic on the pressing mechanism, guaranteed the even extruding of pressing mechanism on the one hand to the transfusion device flexible pipe, make the rolling plug-flow of roller bearing on the transfusion device flexible pipe become very steady on the other hand again, thereby guaranteed the even of transfusion device flexible pipe inner liquid medicine flowing velocity, avoided the intermittence fluctuation of transfusion, for thereby the flowing velocity that can accurately control the transfusion device inner liquid medicine by the rolling speed of control roller bearing on the transfusion device flexible pipe provides the most basic technical guarantee, for use cheaply general infusion set can realize accurately transfusion provide may, thereby when quick and high accuracy transfusion service are provided for patient not extra increase patient's medical expense; Can adopt prior art that the motor that drives impeller is controlled in use,, simple to operate by control circuit directly in the instrument adjusted and show the flow of medicinal liquid, accurate measurement; In addition, the present invention has that overall structure is simple, the characteristics of low cost of manufacture, helps applying of this device.
Description of drawings
Fig. 1 is the front view of embodiment 1;
Fig. 2 is for implementing 1 lateral cutaway view;
Fig. 3 is the phantom of embodiment 1 clamp portion vertical view;
Fig. 4 is the cutaway view of embodiment 1 pipe clamp;
Fig. 5 is embodiment 2 front views;
Fig. 6 is embodiment 2 lateral cutaway views;
Fig. 7 is the cutaway view of tube for transfusion detent mechanism among the embodiment 2;
Fig. 8 is the left view of Fig. 7;
Fig. 9 is the front view of embodiment 3;
Figure 10 is the phantom of embodiment 3 vertical views;
Figure 11 is the phantom of the impeller of embodiment 4;
Wherein, 1. control instrument, 2. casing, 3. latch plate, 4. spring, 5. roller bearing, 6. impeller, 7. pressing plate, 8. locating shaft, 9. transfusion device, 10. pipe clamp, 11. leads, 12. motors, 13. rear chassis, 14. chutes, 15. roller support bars.
The specific embodiment
Shown in Fig. 1-4, present embodiment comprises casing 2, and casing 2 comprises a cavity, and motor 12 is arranged in the cavity, and has the control instrument 1 that is connected with motor 12 by lead 11 to be fixed on the casing 2.In the cavity outside one support is arranged, impeller 6 is installed on the support.Impeller 6 comprises two rotating shafts, and one of them rotating shaft is connected with motor 12.Crawler belt is installed in the rotating shaft, on the crawler belt by between centers every one group of roller bearing 5 is installed.Above the impeller 6 with on the casing 2 of two rotating shaft homonymies pressing plate 7 is being housed, an end of pressing plate 7 is by being connected with casing 2 with the locating shaft 8 of shaft parallel, and the other end cooperates with spring 4 lower ends, and the upper end of spring 4 is fixed on the plate body of fixedlying connected with casing 2.In casing 2 one sides, be provided with pipe clamp 10 with the corresponding position, gap of pressing plate 7 and impeller 6.Pipe clamp 10 is made up of two cards, and two cards connect by bolt, nut.
Locating shaft and elastic are arranged on the pressing plate, and locating shaft is fixed on the casing, and pressing plate can rotate around locating shaft; Impeller is positioned at the locating shaft next door, and its outward flange has roller bearing, and the axial line of all roller bearings all parallels with the axial line of locating shaft, and impeller drives roller bearing and does iterative motion by fixation locus; Pressing plate rotates to certain position around locating shaft and can closely be squeezed on the axle surface of roller bearing, and roller bearing can form one section rolling compressive plane at clamp surface under the induced effect of impeller; The part flexible pipe of transfusion device is placed on the contact position between pressing plate and the roller bearing, and the caliber centrage of three contact position transfusion device flexible pipe becomes cross-like to place with the axial line of roller bearing; Elastic one end on the pressing plate contacts with pressing plate, the other end contacts with latch plate, and formed by latch plate extruding and to promote the elastic force that pressing plate moves outward, pressing plate can be squeezed in the transfusion device flexible pipe on the roller bearing under this elastic force effect, roller bearing under this squeezed state when transfusion device flexible pipe outer wall rolls, the medicinal liquid that can promote in the flexible pipe flows out along the roller bearing pushing direction.The elastic force that produces when elastic acquires a certain degree, pressing plate just can make in the transfusion device flexible pipe liquid roller bearing and pressing plate mutually extruding place be disconnected, the liquid that is extruded the both sides, place can not be flowed mutually again, when roller bearing along the transfusion device flexible pipe with this kind squeezed state during to front slide, liquid in the transfusion device will flow along with the slip of roller bearing, like this, the flow velocity of liquid just depends on the sliding speed of impeller roller bearing on the transfusion device flexible pipe in the transfusion device.Impeller is connected with driver, driver is connected with control instrument by lead, like this, the sliding speed of impeller roller bearing on the transfusion device flexible pipe just depends on the characteristics of motion of driver, and the characteristics of motion of driver can be controlled by instrument, during this device real work, control instrument is controlled the sliding speed of impeller roller bearing on the transfusion device flexible pipe indirectly by the characteristics of motion of direct controlling and driving device, thereby has realized the accurate control to disposable infusion set inner liquid medicine flow velocity.
Shown in Fig. 5-8, present embodiment comprises casing 2, and casing 2 comprises a cavity, in the cavity outside one support is arranged, and impeller 6 is installed on the support.Impeller 6 comprises the circular support that has rotating shaft, in the lateral groove of support by between centers every one group of roller bearing 5 is installed, pressing plate 7 is housed on the casing above the impeller 62.The part that pressing plate 7 lower surfaces and impeller 6 are corresponding is curved, and its curvature is less than the curvature of circular support, and its span is greater than the diameter of circular support.One end of pressing plate 7 is by being connected with casing 2 with the axle of shaft parallel, and the other end cooperates with spring 4 lower ends, and the upper end of spring 4 is fixed on the plate body of fixedlying connected with casing 2.In casing 2 one sides, be provided with pipe clamp 10 with the corresponding position, gap of pressing plate 7 and impeller 6.Have step-like hole on the pipe clamp 10, pipe clamp 10 sides have tube for transfusion and place opening.The other parts of present embodiment are identical with embodiment 1, repeat no more.
Shown in Fig. 9,10, embodiment comprises casing 2, and a support is arranged on the casing 2, and impeller 6 is installed on the support, and the structure of impeller 6 is identical with embodiment 1.Be fixed with positioning runner 14 on the casing 2 of impeller 6 one sides, slide block is housed in the groove, slide block top cooperates with spring, and the upper end of spring is connected with plate body on being fixed on casing.The other parts of present embodiment are identical with embodiment 1, repeat no more.
As shown in figure 11, present embodiment comprises casing 2, and casing 2 comprises a cavity, in the cavity outside one support is arranged, and impeller 6 is installed on the support.Impeller 6 comprises the circular support that has rotating shaft, is arranged at intervals with the blind hole along radial direction on the support, and roller support bar 15 is housed in each blind hole, by axle roller bearing 5 is installed on the roller support bar 15.Roller support bar 15 and blind hole are connected by spring 4 between the bottom.The other parts of present embodiment are identical with embodiment 2, repeat no more.
Claims (9)
1, a kind of medicine liquid flow rate controller for infusion set, it is characterized in that: it comprises casing (2) and is installed in the impeller (6) that casing (2) goes up, is with roller bearing (5), there is pressing mechanism to cooperate with the roller bearing (5) of impeller (6), pressing mechanism is installed on the casing by localizer, and localizer can make pressing mechanism parallel with roller bearing (5); The fixedly connected elastic of the movable part of pressing mechanism and the same casing of an end (2) is connected.
2, medicine liquid flow rate controller for infusion set according to claim 1 is characterized in that: described pressing mechanism is pressing plate (7), and its localizer is the locating shaft (8) that is arranged on pressing plate one end or middle part, and the other end of pressing plate (7) is connected with elastic.
3, medicine liquid flow rate controller for infusion set according to claim 1 is characterized in that: described pressing mechanism is a slide block, and its localizer is the guiding mechanism that is fixed on the casing.
4, medicine liquid flow rate controller for infusion set according to claim 3 is characterized in that: described guiding mechanism is chute (14) or slide bar.
5, according to claim 1 or 2 or 3 or 4 described medicine liquid flow rate controller for infusion set, it is characterized in that: described impeller (6) is rounded, and the compressive plane of pressing mechanism is plane or smooth surface.
6, according to claim 1 or 2 or 3 or 4 described medicine liquid flow rate controller for infusion set, it is characterized in that: described impeller (6) is formed by connecting at interval by cambered surface and plane, and an one plane cooperates with the compressive plane of pressing mechanism, and compressive plane is the plane.
7, according to claim 1 or 2 or 3 or 4 described medicine liquid flow rate controller for infusion set, it is characterized in that: described impeller (6) comprises support and the rack-mount crawler belt that has roller bearing (5).
8, according to claim 1 or 2 or 3 or 4 described medicine liquid flow rate controller for infusion set, it is characterized in that: described impeller (6) comprises the support that has jack, be loaded in the jack by the roller support bar (15) that has roller bearing (5), between roller support bar (15) and the jack bottom spring (4) be housed.
9, according to claim 1 or 2 or 3 or 4 described medicine liquid flow rate controller for infusion set, it is characterized in that: in the casing (2) or casing (2) be outside equipped with transfusion device pipe clamp (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710106297XA CN100509070C (en) | 2006-05-22 | 2007-05-11 | Medicine liquid flow rate controller for infusion set |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610044210 | 2006-05-22 | ||
| CN200610044210.6 | 2006-05-22 | ||
| CNB200710106297XA CN100509070C (en) | 2006-05-22 | 2007-05-11 | Medicine liquid flow rate controller for infusion set |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101066482A CN101066482A (en) | 2007-11-07 |
| CN100509070C true CN100509070C (en) | 2009-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200710106297XA Expired - Fee Related CN100509070C (en) | 2006-05-22 | 2007-05-11 | Medicine liquid flow rate controller for infusion set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100509070C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103316399B (en) * | 2013-07-02 | 2015-01-21 | 浙江大学 | Creep-control infusion device and method thereof based on shape memory alloy spring driver |
| CN104922763B (en) * | 2015-07-09 | 2018-08-10 | 哈尔滨理工大学 | A kind of mechanical device of automatic replacement liquid |
| CN114602010A (en) * | 2022-01-27 | 2022-06-10 | 中国人民解放军海军特色医学中心 | Infusion heating device |
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2007
- 2007-05-11 CN CNB200710106297XA patent/CN100509070C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101066482A (en) | 2007-11-07 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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Granted publication date: 20090708 Termination date: 20130511 |