CN101766848B - Infusion set - Google Patents
Infusion set Download PDFInfo
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- CN101766848B CN101766848B CN 200810246778 CN200810246778A CN101766848B CN 101766848 B CN101766848 B CN 101766848B CN 200810246778 CN200810246778 CN 200810246778 CN 200810246778 A CN200810246778 A CN 200810246778A CN 101766848 B CN101766848 B CN 101766848B
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- liquid
- cam
- piece
- transfusion
- infusion set
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Abstract
The invention provides an infusion device, which can be used for an infusion pump and comprises a transmission shaft, a liquor stopping block and at least one liquor pushing block, wherein the transmission shaft is connected with a driving device; the liquor stopping block comprises a first liquor stopping block and a second liquor stopping block and can be sleeved to the transmission shaft in a rotating way and periodically extrude an infusion tube along with the rotation of the transmission shaft so as to temporarily stop the flowing of liquor in the infusion tube; the at least one liquor pushing block is sleeved to the transmission shaft in the rotating way, periodically extrudes the infusion tube so as to push the liquor to flow in the infusion tube and is positioned between the firstand second liquor stopping blocks; and the lateral end face of the liquor pushing block extruding the infusion tube is a flat end face.
Description
Technical field
The present invention relates to medical apparatus and instruments, relate to particularly the infusion set that for example is used in the infusion pump.
Background technology
Utilize infusion pump to carry out in the infusion process, needing to guarantee transfusion speed stability and the amount of infusion in accurate control a period of time.In the extruding transfusion control device commonly used, mostly arrange a plurality of liquid sheets 1 that push away along tube for transfusion at present, these tops that push away liquid sheet 1 all are formed with protuberance 1a, to be used for pushing tube for transfusion, a typical transfusion control device of the prior art have been shown among Fig. 1.As shown in Figure 1, utilizing these to push away 1 pair of tube for transfusion of liquid sheet carries out from top to bottom, continuously pushes, thereby realize the automatic infusion operation, the protuberance 1a that pushes away liquid sheet 1 top in extrusion process constantly pushes tube for transfusion, after using for a long time, can cause the flexibility decrease of tube for transfusion, and then shortened the actual life of tube for transfusion.The more important thing is, because the distortion of tube for transfusion self can't recover, the precision (stability of transfusion speed and amount of infusion) that therefore can cause infusing reduces greatly, thereby the patient is produced adverse influence even causes personal injury.In addition, in infusion process, also need transfusion state is carried out Real-Time Monitoring, with guarantee whether tube for transfusion is correctly installed, whether the circuit of infusing straight, whether infusion process steady, these all can make a significant impact the transfusion precision.
Summary of the invention
The purpose of this invention is to provide a kind of infusion set, it can overcome above-mentioned problems of the prior art.
For purpose of the present invention, according to the invention provides a kind of infusion set, this infusion set can be used for infusion pump, and this infusion set comprises: power transmission shaft is connected to driving device; End the liquid piece, comprise that first ends only liquid piece of liquid piece and second, end the liquid piece and be set on the power transmission shaft rotationally, and along with the rotation period ground of power transmission shaft pushes tube for transfusion temporarily to stop medicinal liquid flowing in tube for transfusion; At least one pushes away the liquid piece, be set in rotationally on the power transmission shaft, push away liquid block periodicity ground extruding tube for transfusion and flow in tube for transfusion to promote medicinal liquid, push away the liquid piece and end the liquid piece with second only between the liquid piece first, and the side end face that pushes away the extruding tube for transfusion of liquid piece is smooth end face.
Preferably, according to infusion set of the present invention, wherein, push away to be provided with between liquid piece and the power transmission shaft pushing away the liquid cam, push away that the liquid cam securely is set on the power transmission shaft and rotate with power transmission shaft, push away liquid block periodicity ground and rotate thereby drive; End being provided with only liquid cam between liquid piece and the power transmission shaft, only the liquid cam securely is set on the power transmission shaft and with power transmission shaft and rotates, and ends the rotation of liquid block periodicity ground thereby drive; Wherein, push away liquid cam and to end the liquid cam different with respect to the setting angle of power transmission shaft.
Preferably, according to infusion set of the present invention, wherein, push away the liquid cam and end the liquid cam interconnecting.
Preferably, according to infusion set of the present invention, wherein, first end have respectively on the side of extruding tube for transfusion that liquid piece and second ends the liquid piece outstanding.
Preferably, also comprise sensor according to infusion set of the present invention, be arranged on first and push away liquid piece and second and push away at least one of liquid piece and be electrically connected to sensor circuit board.
Preferably, according to infusion set of the present invention, wherein, push away and be formed with groove in the liquid piece and extend through the through hole that pushes away the liquid piece from groove, sensor setting and is connected to sensor circuit board by through hole in groove.
Preferably, also comprise isolation cover according to infusion set of the present invention, hide to end the liquid piece and push away the liquid piece the extruding tube for transfusion the side end face and end the liquid piece and pushing away between liquid piece and the tube for transfusion.
Preferably, also comprise push liquid sheet according to infusion set of the present invention, be arranged on the outside of infusion set, tube for transfusion is in push liquid sheet and end the liquid piece and push away between the liquid piece.
Preferably, also comprise adjustment block according to infusion set of the present invention, be set on the power transmission shaft and with power transmission shaft and carry out periodic rotary by adjusting cam, adjust cam and second end the liquid piece end that the liquid cam links together and setting angle with push away the liquid cam and end the liquid cam different, adjust cam and be arranged on the second only downstream of liquid cam of liquid piece only along the flow direction of fluid.
Preferably, also comprise for the fixing keeper of tube for transfusion according to infusion set of the present invention, be arranged on the outside of infusion set and lay respectively at the upper and lower of infusion set.
The present invention has following technique effect:
According to infusion set according to the present invention adopt have a smooth side end face push away the liquid piece, so that push away the liquid piece extruding during tube for transfusion whole side end face all with the sidewall contact of tube for transfusion, thereby increased application of force area, and thereby reduced pressure, therefore can significantly reduce the damage to tube for transfusion, prolong the service life of tube for transfusion.
Should be appreciated that, above generality is described and the following detailed description is all enumerated and illustrative, and purpose is for to the claimed further instruction that the invention provides.
Description of drawings
Accompanying drawing consists of the part of this description, is used for helping further to understand the present invention.These accompanying drawings illustrate some embodiments of the present invention, and are used for illustrating principle of the present invention with description.Identical parts represent with identical label in the accompanying drawings.In the accompanying drawing:
Fig. 1 is the structural representation of typical infusion set of the prior art;
Fig. 2 is the sectional structure chart according to infusion set of the present invention;
Fig. 3 a, 3b are respectively the top view that pushes away the liquid cam and the A-A cutaway views of the infusion set of Fig. 1;
Fig. 4 a, 4b are respectively the top view and the A-A cutaway views that end the liquid cam of the infusion set of Fig. 1;
Fig. 5 is the main TV structure figure of the infusion set of Fig. 1;
Fig. 6 is the partial sectional view of the infusion set of Fig. 1, wherein shows to be arranged on the sensor that pushes away in the liquid piece;
Fig. 7 is the schematic plan of the infusion set among Fig. 1;
Fig. 8 is the schematic side elevation of the infusion set among Fig. 1; And
Fig. 9 a, 9b are top view and the A-A cutaway views of the adjustment cam of the infusion set among Fig. 1.
The specific embodiment
With reference to the accompanying drawings and in conjunction with the preferred embodiments the specific embodiment of the present invention is described.
At first with reference to Fig. 1, wherein show the according to the preferred embodiment of the invention overall cutaway view of infusion set, this infusion set comprises: power transmission shaft 1 is connected to the driving device (not shown), for example motor; First ends liquid piece 4 and second ends liquid piece 7, and these two are ended the liquid piece and all are set in rotationally on the power transmission shaft 1, and along with the rotation period ground extruding tube for transfusion 9 of power transmission shaft 1, temporarily to stop mobile in tube for transfusion of medicinal liquid; Two push away liquid piece 5,6, these two push away the liquid piece and also are set in rotationally on the power transmission shaft 1, and periodically push tube for transfusion 9, flow in tube for transfusion to promote medicinal liquid, push away liquid piece 5,6 and end liquid piece 4 with second only between the liquid piece 7 first, and these two side end faces that push away liquid piece 5,6 extruding tube for transfusion all are smooth end face.
As shown in Figure 1, two with smooth side end face push away liquid piece 5,6 in the process of extruding tube for transfusion 9, its whole side end face Dou Ding is pressed on the sidewall of tube for transfusion 9, in the situation that extruding force is identical, the pushing away the liquid piece and can reduce significantly to put on pressure on the tube for transfusion 9 of this structure, thereby alleviated the infringement to tube for transfusion 9, can guarantee that in infusion process over a long time tube for transfusion 9 has good elasticity, and the service life that prolongs tube for transfusion 9.Because tube for transfusion 9 can guarantee preferably elasticity, reduce distortion, thereby can improve the transfusion precision, guaranteed drug safety.Especially, when carrying when extrusion process had the medicinal liquid (for example can not by excessive compression) of specific (special) requirements, and in the blood transfusion process time, this infusion set can effectively be avoided the destruction to medicinal liquid and blood constituent, thereby has the better suitability.And then, because in extrusion process, push away liquid piece 5,6 whole side end face can both be to tube for transfusion 9 application of forces, by comparing with the infusion set of the prior art shown in Fig. 1, can be clear that, among the present invention one pushes away the liquid piece and can bring into play a plurality of in the infusion set with prior art and push away the identical effect of liquid piece, thereby has reduced widely the required quantity that pushes away the liquid piece, thereby has simplified the structure of infusion set.
Continuation is with reference to Fig. 2, push away liquid piece 5,6 and power transmission shaft 1 between be respectively arranged with and push away liquid cam 13,14, these two push away liquid cam 13,14 and securely are set on the power transmission shaft 1 and with power transmission shaft 1 and rotate, and push away liquid piece 5,6 and periodically rotate thereby drive; Similarly, first ends liquid piece 4 and second ends and is respectively arranged with first between liquid piece 7 and the power transmission shaft 1 and ends only liquid cam 15 of liquid cam 12 and second, these two are ended liquid cam 12,15 and also securely are set on the power transmission shaft 1 and with power transmission shaft 1 and rotate, and end liquid piece 4 and second and end liquid piece 7 and periodically rotate thereby drive respectively first.
Especially, such as Fig. 3, Fig. 4 as seen, two push away that liquid cam 13,14 ends liquid cam 12 from two, 15 structure is different, and then, no matter push away liquid cam 13,14 with end liquid cam 12, whether 15 structure identical, they should be different with respect to the setting angle of power transmission shaft 1, thereby so that two push away liquid piece 5,6 with two end liquid piece 4,7 under the drive of power transmission shaft 1 at different time point place extruding tube for transfusions 9, and in the situation that cam structure is different, pushing away the liquid piece is different from ending the liquid piece with respect to the forward travel distance (extruding degree) of tube for transfusion.Fig. 3 a, 3b show one of them structure that pushes away liquid cam 13, and Fig. 4 a, 4b show one of them structure of ending liquid cam 12.Further, it should be noted, although two push away liquid cam 13,14 structure is identical, two are ended liquid cam 12,15 structure is also identical, but, two push away the setting angle of liquid cam on power transmission shaft 1 is different, and two to end the setting angle of liquid cam on power transmission shaft 1 also be different, only have different setting angles and can guarantee to push away liquid piece 5,6 and end liquid piece 4,7 intermittently push tube for transfusion successively, concrete setting angle can be determined according to actual needs, this all is known to those skilled in the art, has not therefore repeated them here.
The setting angle that above-mentionedly push away the liquid cam, ends the liquid cam is to realize by the corresponding syndeton that they are linked together.Structure with reference to the cam shown in Fig. 3 a, 3b and 4a, the 4b, can see, only has only liquid cam accommodation hole 12a on the upper surface of liquid cam 12, has only liquid cam protuberance 12b on the lower surface, correspondingly, push away on the upper surface of liquid cam 13 and have the liquid of pushing away cam accommodation hole 13a, have the liquid of pushing away cam protuberance 13b on the lower surface.To push away liquid cam protuberance 13b insertion and end among the liquid cam accommodation hole 12a, just can determine to push away liquid cam 13 with respect to the position of ending liquid cam 12, thereby determine their relative setting angle.Similarly, each pushes away liquid cam and each and ends and all have same accommodation hole and protuberance on the liquid cam, just can liquid cam 13,14 and end liquid cam 12,15 and interconnect with corresponding to each other will be pushed away by these structures, as shown in Figure 2, thus also just determined their setting angles relative to each other.
With similar in the prior art, first ends liquid piece 4 and second only is formed with respectively the first protuberance 4a and the second protuberance 7a in the top of liquid piece 7, shown in Fig. 2,5, when first ended liquid piece 4 and second and end liquid piece 7 extruding tube for transfusion 9, these two protuberance 4a, 7a just compressed the sidewall of tube for transfusion 9.
Further, for transfusion state is carried out Real-Time Monitoring, to confirm infusion process whether steadily (being whether correctly stably motion of tube for transfusion 9), also comprise sensor 20,21 according to infusion set of the present invention, it is separately positioned on above-mentioned two and pushes away in the liquid piece 5,6, and all be connected to sensor circuit board 22 by wire, be clearly shown that such as Fig. 5,6.Particularly, push away and be formed with separately groove 5a, 6a in the liquid piece 5,6, and set out and extend through and push away liquid piece 5,6 through hole 5b, 6b along pushing away liquid piece 5,6 lateral from groove 5a, 6a respectively, sensor 20,21 just is separately positioned among groove 5a, the 6a, and is connected to sensor circuit board 22 by through hole 5b, 6b.
Preferably, shown in Fig. 2,6, also comprise isolation cover 3 according to infusion set of the present invention, its hide to end liquid piece 4,7 and push away liquid piece 5,6 sidepiece and these end liquid piece 4,7 and push away liquid piece 5,6 and tube for transfusion 9 between.This isolation cover 3 (for example can prevent medicinal liquid, from the medicinal liquid in the infusion pump, or artificial origin and enter the medicinal liquid of infusion set, or leak the medicinal liquid enter infusion set owing to tube for transfusion) enter in the crimping section of infusion set, namely, enter into only liquid piece 4,7 and push away between the liquid piece 5,6, thereby the periodicity that retardance ends the liquid piece and pushes away the liquid piece moves back and forth, and then unnecessary fault occurs.This isolation cover 3 can be made by elastomeric material or other materials that can prevent liquid infiltration.
Preferably, this infusion set also comprises push liquid sheet 10, and shown in Fig. 2,6, this push liquid sheet 10 is arranged on the outside of infusion set, and tube for transfusion 9 is in push liquid sheet 10 and end the liquid piece and push away between the liquid piece.When pushing away a side of liquid piece 5,6 extruding tube for transfusions 9, push liquid sheet 10 is from the opposite side pushing tube for transfusion 9 of tube for transfusion 9, thus promotion medicinal liquid flowing in tube for transfusion.
Further, as shown in Figure 2, this infusion set also comprises adjustment block 8, pushes away the liquid piece and end the liquid piece identical with above-mentioned, and this adjustment block 8 is set on the power transmission shaft 1 and with power transmission shaft 1 and carries out periodic rotary by adjusting cam 11.The effect of this adjustment block 8 is that amount of infusion is carried out the periodicity compensation adjustment, the structure of the adjustment cam 11 of the present embodiment has been shown among Fig. 9, the structural similarity that pushes away liquid cam 13 shown in itself and Fig. 3, it is different just adjusting the angle between accommodation hole and the protuberance on the cam 11 and accommodation hole and the angle between the protuberance that pushes away on the liquid cam 13, thereby so that adjusts cam 11 and to push away liquid cam 13 different with respect to the setting angle of power transmission shaft 1.
Preferably, this infusion set also comprises keeper 16,17, shown in Fig. 7,8, these two keepers 16,17 all are arranged on the shell of infusion set, and lay respectively at the upper and lower of infusion set, as shown in the figure, all be formed with locating slot between two keepers 16,17, schematically show the locating slot 17a of the keeper 17 that is arranged in infusion set top among Fig. 7, tube for transfusion 9 can be clamped in the above-mentioned locating slot, guaranteeing that tube for transfusion 9 is in the installation site of correct installation, and guarantee that the transfusion circuit is straight.
The below will be described the working method of this infusion set.
With reference to Fig. 6, power transmission shaft 1 rotates under the driving of motor, thereby driving fixed thereon first ends liquid cam 12, first and pushes away liquid cam 13, second and push away liquid cam 14, second and end liquid cam 15 and adjust cam 11 and carry out periodic rotary, and then drive first and end liquid piece 4, first and push away liquid piece 5, second and push away that liquid piece 6, second ends liquid piece 7 and adjustment block 8 is intermittently pushed tube for transfusion 9, push liquid sheet 10 also cooperates extruding tube for transfusion 9 therewith, thereby realizes the continuous transfusion operation.
When infusion process began, first ends liquid piece 4, first pushed away liquid piece 5, second and pushes away liquid piece 6 and do not push tube for transfusion 9, and second end liquid piece 7 extruding tube for transfusions 9, had this moment liquid to flow into tube for transfusion 9; Then, rotation along with power transmission shaft 1, first ends liquid piece 4 and second ends liquid piece 7 and all pushes tube for transfusion 9, does not push tube for transfusion 9 and push away liquid piece 5,6, has this moment a certain amount of liquid to be stored in first and ends liquid piece 4 and second and end in the closing pipe line of formation between the liquid piece 7; Then, second ends liquid piece 7 leaves tube for transfusion 9, the first and pushes away liquid piece 5 and move forward and push gradually tube for transfusion 9, the downward liquid flow in the above-mentioned closing pipe line, push away liquid piece 6 this moment second and also move forward gradually extruding tube for transfusion 9, thereby the liquid in the pipeline of original sealing is all flowed out; Subsequently, second ends liquid piece 7 at this extruding tube for transfusion 9, to stop liquid flow, has so far just finished a complete transfusion cycle.In this process, the motion of the forward stepping by adjustment block 8 is carried out the periodicity compensation adjustment to amount of infusion, guarantees the transfusion precision.Particularly, the adjustment cam 11 of adjustment block 8 and first pushes away liquid cam 12 interconnect (setting angle of the two is different), at all end of term adjustment block 8 extruding tube for transfusions 9 of last transfusion, and when next transfusion cycle begins, first end liquid piece 4 and again compress tube for transfusion 9, the cycle of carrying out in the interval of this twice extruding upgrades, and then the compensation of infusing, to guarantee better the transfusion precision.
In said process, installation situation and the transfusion stabilization situation of sensor 20 and 21 pairs of tube for transfusions 9 judge, the information exchange that obtains is crossed sensor circuit board 22 pass to the main control chip (not shown), thereby trigger alarm reminds medical personnel in time to process.
Be the preferred embodiments of the present invention only below, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All any modifications of doing within the spirit and principles in the present invention, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. infusion set, described infusion set is used for infusion pump, it is characterized in that, and described infusion set comprises:
Power transmission shaft (1) is connected to driving device;
End the liquid piece, comprise that first ends only liquid piece (7) of liquid piece (4) and second, the described liquid piece that ends is set on the described power transmission shaft rotationally, and along with the rotation period ground of described power transmission shaft pushes tube for transfusion temporarily to stop medicinal liquid flowing in described tube for transfusion;
At least one pushes away liquid piece (5,6), be set in rotationally on the described power transmission shaft, the described described tube for transfusion of liquid block periodicity ground extruding that pushes away flows in described tube for transfusion to promote medicinal liquid, the described liquid piece that pushes away ends the liquid piece with second only between the liquid piece described first, and the described side end face that pushes away the described tube for transfusion of extruding of liquid piece is smooth end face;
Described infusion set also comprises adjustment block (8), is set on the described power transmission shaft and with described power transmission shaft and carries out periodic rotary by adjusting cam (11), and the motion of the forward stepping by described adjustment block is carried out the periodicity compensation adjustment to amount of infusion.
2. infusion set according to claim 1 is characterized in that,
Described push away that liquid is determined and described power transmission shaft between be provided with and push away liquid cam (13,14), the described liquid cam that pushes away securely is set on the described power transmission shaft and with described power transmission shaft and rotates, and rotates thereby drive the described liquid block periodicity ground that pushes away;
Described ending is provided with only liquid cam (12,15) between liquid piece and the described power transmission shaft, described only liquid cam securely is set on the described power transmission shaft and with described power transmission shaft and rotates, and rotates thereby drive the described liquid block periodicity ground that ends;
Wherein, the described liquid cam that pushes away is different with respect to the setting angle of described power transmission shaft from the described liquid cam that ends.
3. infusion set according to claim 2 is characterized in that,
Describedly push away the liquid cam and the described liquid cam that ends interconnects.
4. infusion set according to claim 1 is characterized in that,
Described first ends on the example end of the described tube for transfusion of extruding that liquid piece and second ends the liquid piece and has respectively protuberance (4a, 7a).
5. infusion set according to claim 1 is characterized in that, the described liquid piece (5,6) that pushes away pushes away liquid piece and second by first and pushes away the liquid piece and form, and described infusion set also comprises:
Sensor (20,21) is arranged on described first and pushes away liquid piece and described second and push away at least one of liquid piece and be electrically connected to sensor circuit board.
6. infusion set according to claim 5 is characterized in that,
Described pushing away is formed with groove (5a, 6a) and extends through the described through hole (5b, 6b) that pushes away the liquid piece from described groove in the liquid piece, described sensor setting and is connected to described sensor circuit board by described through hole in described groove.
7. infusion set according to claim 1 is characterized in that, also comprises:
Isolation cover (3) hides described side end face of ending liquid piece and the described described tube for transfusion of extruding that pushes away the liquid piece and ends liquid piece and described pushing away between liquid piece and the described tube for transfusion described.
8. infusion set according to claim 1 is characterized in that, also comprises:
Push liquid sheet (10) is arranged on the outside of infusion set, and described tube for transfusion is determined and described pushing away between the liquid piece in described push liquid sheet and the described liquid that ends.
9. infusion set according to claim 2, it is characterized in that, described adjustment cam and described second end the liquid piece end that the liquid cam links together and setting angle pushes away the liquid cam and described to end the liquid cam different with described, described adjustment cam is arranged on the described second only downstream of liquid cam of ending the liquid piece along the flow direction of fluid.
10. infusion set according to claim 1 is characterized in that, also comprises:
The keeper (16,17) that is used for fixing described tube for transfusion is arranged on the outside of described infusion set and lays respectively at the upper and lower of described infusion set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810246778 CN101766848B (en) | 2008-12-29 | 2008-12-29 | Infusion set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810246778 CN101766848B (en) | 2008-12-29 | 2008-12-29 | Infusion set |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101766848A CN101766848A (en) | 2010-07-07 |
| CN101766848B true CN101766848B (en) | 2013-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810246778 Expired - Fee Related CN101766848B (en) | 2008-12-29 | 2008-12-29 | Infusion set |
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| Country | Link |
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| CN (1) | CN101766848B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102028991A (en) * | 2011-01-11 | 2011-04-27 | 毛爱民 | Method for returning transfusion tube by simultaneously and correspondingly accepting pressure at two sides |
| CN105688312B (en) * | 2016-03-11 | 2024-03-08 | 北京科联升华应用技术研究所 | Device for adjusting liquid medicine conveying flow |
| CN105878018B (en) * | 2016-07-01 | 2019-03-08 | 成都杰仕德科技有限公司 | The infusion bag pressurizing unit and dosage to make up a prescription for cillin bottle |
| CN112007237A (en) * | 2019-05-30 | 2020-12-01 | 比亚迪股份有限公司 | Infusion device |
| CN110585526A (en) * | 2019-10-29 | 2019-12-20 | 内蒙古民族大学附属医院 | Infusion device with non-return function for low-speed infusion |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1254296A (en) * | 1997-04-18 | 2000-05-24 | 雀巢制品公司 | Peristaltic pump |
| CN1474054A (en) * | 2002-07-06 | 2004-02-11 | B�����ʡ�÷���ɸ�����˾ | Creeping soft tube pump |
| CN2815379Y (en) * | 2005-04-21 | 2006-09-13 | 毛爱民 | Peristaltic transfusion pump combing in liquid-blocking coutrol strip with liquid pushing control strip |
| CN201026331Y (en) * | 2007-03-15 | 2008-02-27 | 范爱霞 | Automatic constant pressure squeezing clamp of transfusion bag |
-
2008
- 2008-12-29 CN CN 200810246778 patent/CN101766848B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1254296A (en) * | 1997-04-18 | 2000-05-24 | 雀巢制品公司 | Peristaltic pump |
| CN1474054A (en) * | 2002-07-06 | 2004-02-11 | B�����ʡ�÷���ɸ�����˾ | Creeping soft tube pump |
| CN2815379Y (en) * | 2005-04-21 | 2006-09-13 | 毛爱民 | Peristaltic transfusion pump combing in liquid-blocking coutrol strip with liquid pushing control strip |
| CN201026331Y (en) * | 2007-03-15 | 2008-02-27 | 范爱霞 | Automatic constant pressure squeezing clamp of transfusion bag |
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| CN101766848A (en) | 2010-07-07 |
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