CN202096543U - Flow speed control device of transfusion apparatus - Google Patents
Flow speed control device of transfusion apparatus Download PDFInfo
- Publication number
- CN202096543U CN202096543U CN2011201832596U CN201120183259U CN202096543U CN 202096543 U CN202096543 U CN 202096543U CN 2011201832596 U CN2011201832596 U CN 2011201832596U CN 201120183259 U CN201120183259 U CN 201120183259U CN 202096543 U CN202096543 U CN 202096543U
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- Prior art keywords
- transfusion device
- squeezer
- bearing plate
- transfusion
- threaded
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Abstract
The utility model discloses a flow speed control device of a transfusion apparatus, which belongs to the technical field of auxiliary medical appliances and comprises a shell (2), a load-bearing plate (3) and a threaded squeezing mechanism. The load-bearing plate (3) and the threaded squeezing mechanism are fixedly mounted on the shell (2), and a gap for holding a transfusion apparatus hose (1) is disposed between the load-bearing plate (3) and the threaded squeezing mechanism. The distance between the transfusion apparatus hose and the load-bearing plate is adjusted via the threaded squeezing mechanism, squeezing strength of the transfusion apparatus hose is controlled, and the flow speed control device is accurate in adjustment and can realize accurate control of flow speed of liquid medicine of the transfusion apparatus. In addition, the flow speed control device is simple in structure, low in manufacturing cost and applicable to controlling flow speed of any existing transfusion apparatuses.
Description
Technical field
This utility model relates to a kind of transfusion device current velocity controller, belongs to medical assistance technique with the apparatus field.
Background technology
The speed of clinical patient transfusion will be confirmed according to medicine and patient's situation; Cancer patient, diabetics, old man, child and body constitution than weak person in when transfusion; The speed of transfusion and dosage need accurately control; It is too fast to infuse, and may cause poisoning, and can cause edema and heart failure when more serious; Infusing, it is not enough then maybe dose to take place slowly, makes treatment influenced and give patient and the unnecessary burden of nursery work increase.The transfusion of disposable infusion set extension bottle is generally adopted in the routine clinical transfusion, 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, develop successively and can accurately control the flow velocity of carrying medicinal liquid and the intelligent type medical transfusion control device of flow.This type device mainly contains two kinds of finger-like creeping device and plate-like creeping devices.
As shown in Figure 7, the finger-like creeping device 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, drive camshaft by motor and rotate, slide block is pumped according to a definite sequence and the characteristics of motion, push the venous transfusion pipe successively, make liquid in the tube for transfusion with the certain speed directed flow as ripple.
Pump case around the plate-like creeping device has in the circular arc has a centre wheel, and the edge of centre wheel distributes axisymmetricly the rotating squeegee roller of some is installed, and tube for transfusion is clipped between the circular arc inner peripheral surface of squeegee roller and pump case.During work, motor drives centre wheel and rotates, and the squeegee roller that centre wheel drives again around it rotates centre wheel picture " fixed star ".Squeegee roller picture " planet ".Squeegee roller is both around the centre wheel revolution, again around own axis rotation.Several squeegee rollers make liquid flow with certain direction along centre wheel order extruding tube for transfusion.
Above-mentioned two kinds of intelligent infusion flow rate control device all are to rely on to realize the control of flow velocity to the batch (-type) extruding plug-flow of transfusion device flexible pipe; Its principle is after pushing the plug-flow completion last time; The section of being extruded flexible pipe will restore to the original state rapidly to charge into the medicinal liquid of equal number, and the transfusion device current velocity controller pushes plug-flow more in the same manner and goes out the medicinal liquid in the flexible pipe.The plug-flow amount of supposing each medicinal liquid is constant, and the operating frequency that changes the transfusion device current velocity controller can realize the control to the transfusion device flow velocity.Such technological main points are that the section of being extruded flexible pipe will restore to the original state rapidly to charge into the medicinal liquid of equal number, will be no longer accurate otherwise measure after pushing the plug-flow completion last time.The identical transfusion device flexible pipe that necessarily requires of the quantity of the section of being squeezed inner liquid medicine will have better elastic when keeping pushing plug-flow at every turn; This technological deficiency makes such infusion flow rate control device need be equipped with the higher special-purpose transfusion device of the better price of elasticity; This has increased patient's burden on the one hand, has also limited the scope of application of infusion flow rate control device on the other hand; Secondly, the intelligent infusion flow rate control device complex structure of prior art, price is high, has limited the scope of its application.
The utility model content
To the above-mentioned defective that exists in the prior art; This utility model provides a kind of new transfusion device current velocity controller, and this device has been removed the elastic dependence of transfusion device flexible pipe, can realize the accurate control to any transfusion device medicinal liquid flow velocity; And simple in structure, cost of manufacture is low.
This utility model is realized through following technical scheme: a kind of transfusion device current velocity controller; It comprises housing, is fixedly mounted on bearing plate and screw thread pressing mechanism on the said housing, and the gap that supplies to place the transfusion device flexible pipe is arranged between said bearing plate and the said screw thread pressing mechanism.
This utility model in use; The transfusion device flexible pipe is placed between bearing plate and the screw thread pressing mechanism; Through the screw thread pressing mechanism regulate and bearing plate between distance, thereby realize the control of the crushing strength of transfusion device flexible pipe is reached the control to transfusion device medicinal liquid flow velocity.
Further scheme is, said screw thread pressing mechanism comprises the threaded frame that is connected with said housing, is arranged on the screwed screw putter in the said threaded frame and be arranged on the squeezer of said screw putter front end rotationally.It regulates the distance between squeezer and the bearing plate through the rotary threaded push rod, reaches the purpose of the crushing strength of control transfusion device flexible pipe.
In this utility model, the surface of said squeezer and transfusion device flexible pipe contact jaw can be plane or arc surface or taper surface.
In order to prevent that squeezer rotates when the transfusion device flexible pipe is pushed, influence is to the accurate control of transfusion device medicinal liquid flow velocity, and said housing is provided with the positioner that prevents that said squeezer from rotating.
In this utility model, can be between said squeezer and the said screw putter to the connection of top formula or through being threaded.
In order accurately to regulate the distance between squeezer and the bearing plate, thereby guarantee the accurate control to transfusion device medicinal liquid flow velocity, the rear end of said screw putter is provided with connected deceleration device.Can accurately regulate the rotational angle of screw putter through deceleration device, reach the distance between accurate adjusting squeezer and the bearing plate and then accurately control the purpose of transfusion device medicinal liquid flow velocity.
In order to realize automatic control, the rear end of said screw putter is connected with motor drive mechanism.
The beneficial effect of this utility model is: the one, through adopting bearing plate and screw thread pressing mechanism; Thereby make infusion flow rate control no longer rely on the elasticity of transfusion device flexible pipe; Flow speed control applicable to any existing transfusion device; As be used for the control of disposable infusion set medicinal liquid flow velocity, be used for the control of disposable use blood exchange transfusion set velocity of blood flow etc.; The 2nd, owing to adopted the screw thread pressing mechanism, the transfusion device flow velocity can be realized the control to flow velocity through the screw thread of regulating the screw thread pressing mechanism, and accuracy is high, and controllability is strong; The 3rd, this utility model can be through surveying the integrated use with automatic control technology with the transfusion device flow velocity of prior art, and realization is to the automatic control of transfusion device flow velocity; In addition, the utlity model has that overall structure is simple, the characteristics of low cost of manufacture, help applying of this device.
Description of drawings
Fig. 1 is the front view of embodiment 1;
Fig. 2 is that A-A among Fig. 1 is to enlarged diagram;
Fig. 3 is the front view of embodiment 2;
Fig. 4 is the front view of embodiment 3;
Fig. 5 is the front view of embodiment 4;
Fig. 6 is the front view of embodiment 5;
Fig. 7 is the structural representation of the finger-like creeping device of prior art;
Among the figure, 1, the transfusion device flexible pipe, 2, housing, 3, bearing plate, 4, squeezer, 5, threaded frame; 6, screw putter, 7, positioner, 8, instrument, 9, lead, 10, motor; 11, deceleration device, 12, camshaft, 13, slide block, 14, tube for transfusion, 15, liquid.
The specific embodiment
Embodiment through indefiniteness is further described this utility model below:
Like accompanying drawing 1, shown in Figure 2, a kind of transfusion device current velocity controller, it comprises housing 2, bearing plate 3, squeezer 4, threaded frame 5, screw putter 6.Bearing plate 3 is fixedly mounted on the housing 2 with threaded frame 5.Threaded frame 5 has axis hole, and screw putter 6 is assemblied in the axis hole of threaded frame 5 and is rotatable, and screw putter 6 has internal thread hole, and its front end is provided with squeezer 4, and squeezer 4 is threaded spinning in the screwed hole of screw putter 6.On housing 2, be provided with the positioner 7 that prevents that squeezer 4 from rotating.During use, transfusion device flexible pipe 1 is placed between bearing plate 3 and the squeezer 4.Rotary threaded push rod 6; Under threaded function; Squeezer 4 moves axially along screw putter 6, and the distance between squeezer 4 and the bearing plate 3 changes, behind the diameter of distance less than transfusion device flexible pipe 1 between squeezer 4 and the bearing plate 3; Both have just formed extruding to transfusion device flexible pipe 1, and this extruding can change the medicinal liquid flow velocity in the transfusion device flexible pipe.Continue rotary threaded push rod 6; Distance between squeezer 4 and the bearing plate 3 is more little, and its crushing strength to transfusion device flexible pipe 1 is just big more, and the medicinal liquid flow velocity in the transfusion device flexible pipe 1 is just low more; When the medicinal liquid flow velocity in the transfusion device flexible pipe 1 reached the expection setting value, screw putter 6 stopped the rotation.Medicinal liquid flow velocity in the transfusion device flexible pipe and the distance between squeezer 4 and the bearing plate 3 have the corresponding linear relation, between adjusting squeezer 4 and the bearing plate 3 apart from the medicinal liquid flow velocity in the scalable transfusion device flexible pipe.Screw putter 6 whenever rotates a circle on threaded frame 5 (promptly revolving three-sixth turn), and it can promote, and squeezer 4 advances or the distance of a slow astern pitch, and the distance between corresponding bearing plate 2 and the squeezer 3 will reduce or increase the distance of a pitch.Screw putter 6 is every rotation 1 degree on threaded frame 5, and its distance that changes between bearing plate 3 and the squeezer 4 is 300 sixtieths of a pitch distance.Structure of the present invention just with extremely difficult bearing plate of regulating 3 and the air line distance between the squeezer 4, has become conveniently adjusted anglec of rotation problem.
Squeezer 4 in the present embodiment can be plane or arc surface or taper surface with the surface of transfusion device flexible pipe 1 contact jaw.
Other parts in the present embodiment adopt prior art, repeat no more at this.
Shown in accompanying drawing 3, a kind of transfusion device current velocity controller, it comprises housing 2, bearing plate 3, squeezer 4, threaded frame 5, screw putter 6.Bearing plate 3 is fixedly mounted on the housing 2 with threaded frame 5.Threaded frame 5 has axis hole; Screw putter 6 is assemblied in the axis hole of threaded frame 5 and is rotatable, and screw putter 6 has internal thread hole, and its front end is provided with squeezer 4; Squeezer 4 is threaded spinning in the screwed hole of screw putter 6; The rear end of screw putter 6 is connected with motor 10, and motor 10 links to each other with instrument 8 through lead 9, and instrument 8 all is fixed on the housing 2 with motor 10.In order to prevent that squeezer 4 from rotating, and also is provided with the positioner 7 that prevents that squeezer 4 from rotating on housing 2.The anglec of rotation of screw putter 6 can be controlled through instrument.During this device real work; Control system is controlled the anglec of rotation of motor according to the detection signal of instrument 8, and motor 10 rotations drive screw putters 6 and rotate, under threaded function; Squeezer 4 moves axially along screw putter 6; Distance between bearing plate 3 and the squeezer 4 changes, thereby realizes the control to the crushing strength of transfusion device flexible pipe, the final accurate control that realizes transfusion device inner liquid medicine flow velocity.
Other part of present embodiment adopts prior art, repeats no more at this.
Shown in accompanying drawing 4, a kind of transfusion device current velocity controller, it comprises housing 2, bearing plate 3, squeezer 4, threaded frame 5, screw putter 6.Bearing plate 3 is fixedly mounted on the housing 2 with threaded frame 5.Be threaded the hole on the threaded frame 5, screw putter 6 has external screw thread and is assemblied in the screw of threaded frame 5.The front end of screw putter 6 is provided with squeezer 4, and squeezer 4 is that the top formula is provided with screw putter 6.In order to prevent that squeezer 4 from rotating, and also is provided with the positioner 7 that prevents that squeezer 4 from rotating on housing 2.During use, rotary threaded push rod 6, screw putter 6 moves axially, and promotes squeezer 4 and moves axially, thereby change the distance between squeezer 4 and the bearing plate 3, realizes the accurate control to transfusion device inner liquid medicine flow velocity.
Other parts of present embodiment adopt prior art, repeat no more at this.
Shown in accompanying drawing 5, present embodiment and embodiment 1 or embodiment 3 are basic identical, and difference is that the rear end of the screw putter 6 in the present embodiment is provided with deceleration device 11.Described deceleration device 11 is a gear reduction.The gear of rotational speed-reducing device 11 can drive screw putter 6 rotations.The speed reducing ratio of deceleration device 11 can be set according to actual needs, such as, speed reducing ratio is set at 30: 1, then, every rotation 1 circle of the driving gear of deceleration device 11 can drive screw putter 6 rotations a thirtieth circle.Like this, can realize more accurately regulating to the transfusion device flow velocity.
Other part of present embodiment is identical with embodiment 1 or embodiment 3, repeats no more at this.
Certainly, the deceleration device 11 in the present embodiment also can be arranged in the structure described in the embodiment 2, as: it is arranged between motor and the screw putter, then can realizes more accurate control automatically through motor.
Shown in accompanying drawing 6, present embodiment and embodiment 3 are basic identical, and difference is that the screw putter 6 in the present embodiment directly contacts with transfusion device flexible pipe 1, has save squeezer.
Other part of present embodiment is identical with embodiment 3, repeats no more at this.
Claims (7)
1. transfusion device current velocity controller; It is characterized in that: it comprises housing (2), is fixedly mounted on bearing plate (3) and screw thread pressing mechanism on the said housing (2), and the gap that supplies to place transfusion device flexible pipe (1) is arranged between said bearing plate (3) and the said screw thread pressing mechanism.
2. transfusion device current velocity controller according to claim 1 is characterized in that: said screw thread pressing mechanism comprises the threaded frame (5) that is connected with said housing (2), is arranged on the screwed screw putter (6) in the said threaded frame (5) and be arranged on the squeezer (4) of said screw putter (6) front end rotationally.
3. transfusion device current velocity controller according to claim 2 is characterized in that: said squeezer (4) is plane or arc surface or taper surface with the surface of transfusion device flexible pipe (1) contact jaw.
4. according to claim 2 or 3 described transfusion device current velocity controllers, it is characterized in that: said housing (2) is provided with the positioner (7) that prevents that said squeezer (4) from rotating.
5. according to claim 2 or 3 described transfusion device current velocity controllers, it is characterized in that: be between said squeezer (4) and the said screw putter (6) to the connection of top formula or through being threaded.
6. according to claim 2 or 3 described transfusion device current velocity controllers, it is characterized in that: the rear end of said screw putter (6) is provided with connected deceleration device.
7. according to claim 2 or 3 described transfusion device current velocity controllers, it is characterized in that: the rear end of said screw putter (6) is connected with motor drive mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201832596U CN202096543U (en) | 2011-06-02 | 2011-06-02 | Flow speed control device of transfusion apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201832596U CN202096543U (en) | 2011-06-02 | 2011-06-02 | Flow speed control device of transfusion apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202096543U true CN202096543U (en) | 2012-01-04 |
Family
ID=45382582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201832596U Expired - Fee Related CN202096543U (en) | 2011-06-02 | 2011-06-02 | Flow speed control device of transfusion apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202096543U (en) |
-
2011
- 2011-06-02 CN CN2011201832596U patent/CN202096543U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120104 Termination date: 20150602 |
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| EXPY | Termination of patent right or utility model |