CN102512726B - Microinfusion pump - Google Patents
Microinfusion pump Download PDFInfo
- Publication number
- CN102512726B CN102512726B CN 201210012879 CN201210012879A CN102512726B CN 102512726 B CN102512726 B CN 102512726B CN 201210012879 CN201210012879 CN 201210012879 CN 201210012879 A CN201210012879 A CN 201210012879A CN 102512726 B CN102512726 B CN 102512726B
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- Prior art keywords
- valve block
- nipple
- coupling
- communicated
- apopore
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Abstract
The invention discloses a microinfusion pump, which comprises a pump head, a liquid storage bag, a silica gel bag, an infusion conduit and a pressure control valve, wherein one end of the silica gel bag is communicated with the liquid storage bag, and the other end of the silica gel bag is communicated with the infusion conduit; a driving piece which can extrude the silica gel bag regularly, so that air pressure in the silica gel bag is changed is arranged on the pump head; the silica gel bag is communicated with the infusion conduit by the pressure control valve which is resistant to back flow and direct flow; the pressure control valve comprises an inner joint, an outer joint and a valve plate; a water inlet channel is formed on the inner joint and is communicated with the silica gel bag; a water outlet channel is formed on the outer joint and is communicated with the infusion conduit; the inner joint is hermetically connected with the outer joint, and an accommodating space which is used for communicating the water inlet channel and the water outlet channel is formed between the inner joint and the outer joint; the valve plate is made of an elastic material, and a water outlet hole is formed in the valve plate; and the valve plate is positioned in the accommodating space, so that the water inlet channel is separated from the water outlet channel. According to the microinfusion pump, the valve plate has a self-sealing capacity, so that situations of uncontrolled infusion and backflow of blood can be prevented under the pressure action of the pump head.
Description
Technical field
The present invention relates to the micro-peristaltic pump technical field in the medical apparatus and instruments, particularly a kind of microinfusion pump that is not subjected to gravity effect and can prevents blood back.
Background technology
The medical trace transfusion peristaltic pump that uses in the prior art, mostly formed by transfusion control device (abbreviation pump head) and transfusion bag, outlet pipeline and then control transfusion that pump head links to each other with transfusion bag by control, its operation principle is: at pump head when transfusion bag is combined, left valve block and right valve block on the pump head will be pressed on the silicon capsule of transfusion bag, make that the liquid in the liquid storing bag links to each other with the water outlet end; During use, by left valve block, right valve block and promote mainly the regular motion of sheet on the control pump head, thereby in silicon capsule, produce the purpose that pressure reaches transfusion.It is not in place through regular meeting clamping to take place when but pump head links to each other with transfusion bag in use; or situation about midway coming off; and then the valve block that causes pump head can not effectively stop the water in the transfusion bag to flow; when the pressure that is higher than human body or is lower than human body is arranged in the transfusion bag; out of control or the blood back of transfusion will take place, thereby produce dangerous.Therefore need a kind of pump transfusion bag that can not be subjected to gravity effect, to prevent infusing out of control and situation blood back.
Summary of the invention
The purpose of this invention is to provide a kind of microinfusion pump, it can stop flowing of the liquid that produces by setting pressure control valve on transfusion bag under gravity or the effect of blood of human body pressure, guarantee transfusion normally.
For achieving the above object, the technical scheme that the present invention takes is: a kind of microinfusion pump comprises pump head, liquid storing bag, silicon capsule and transfusion catheter; Pump head is provided with can regular extruding silicon capsule, makes the actuator that air pressure changes in the silicon capsule; Liquid storing bag is provided with outlet, and silicon capsule one end is connected with the outlet of liquid storing bag, and the other end is communicated with transfusion catheter; Also comprise pressure-control valve; Be connected by pressure-control valve between silicon capsule and the transfusion catheter;
Pressure-control valve comprises nipple, coupling and valve block;
Nipple is provided with intake tunnel, and the water inlet of intake tunnel is communicated with silicon capsule; Coupling is provided with exhalant canal, and the outlet of exhalant canal is communicated with transfusion catheter; Be tightly connected between nipple and the coupling, and between nipple and coupling, form an accommodation space that is communicated with intake tunnel and exhalant canal;
Valve block adopts elastomeric material to make, and which is provided with apopore; Valve block is positioned at above-mentioned accommodation space, and the valve block plane perpendicular to intake tunnel and exhalant canal axially, intake tunnel and exhalant canal are separated.
Further, the present invention also comprises shell, and transfusion bag, pump head, silicon capsule all place in the shell; The junction periphery of nipple and coupling in the pressure-control valve is provided with bayonet socket, pressure-control valve connects and fixes on shell by bayonet socket, makes nipple be positioned at shell, and the part of coupling is positioned at outside the shell, in use can not be shifted, avoid transfusion is impacted.
Preferably, among the present invention between nipple and the coupling for clamping, coupling is stuck in the nipple, and the access section makes accommodation space to external seal for being tightly connected, medicinal liquid can not ooze out from the junction of nipple and coupling.
The present invention is when using, at first with syringe by transfusion catheter to also in liquid storing bag that pump head is combined, do not inject medicinal liquid, after having annotated pump head is installed in the shell, the liquid medicine in can the driven silicon capsule when making actuator action on the pump head is toward the intake tunnel stream of nipple; Begin transfusion work then.
As a kind of improvement, the present invention also comprises flexible member; Valve block simultaneously with between the coupling is connected by flexible member, and another side props up the outlet of intake tunnel in the nipple.Preferably, above-mentioned flexible member is spring, also can be shell fragment or other forms, as long as can realize being against on the intake tunnel outlet of nipple, makes medicinal liquid to pass through by the apopore on the valve block.Under this mode, valve block need not by nipple and coupling stuck, and valve block relies on the elastic force of spring to prop up the intake tunnel outlet of nipple.
Further, the apopore on the middle valve plate of the present invention can be in-line or cross; If be cross, then the quantity of apopore can arrange one, also can have a plurality ofly, is clouded on the valve block; The length in valve block upper water-out hole is a factor that influences the self-styled ability of valve block, among the present invention, be preferably when apopore quantity is one, the length range of in-line apopore is: 0.01mm-30mm, and two arms length range separately that the cross apopore intersects is: 0.01mm-30mm; When apopore was a plurality of cross, two arms length range separately that intersects in the cross was: 0.01-30mm.
Because valve block adopts elastomeric material to make, so apopore has self-styled ability, when pump head pressure is big, can open automatically, make medicinal liquid normally to output to coupling and then to enter transfusion catheter from nipple; And when the pressure on valve block two sides all hour, the valve block maintenance is self-styled can leakage.
Preferably, the elastomeric material that middle valve plate of the present invention adopts is medical silica-gel or high-elastic PVC material, perhaps other elastomeric materials, elastic properties of materials is more good, then the self-styled ability of valve block is more good, and secondly, the thickness of valve block also is a factor that influences the self-styled ability of valve block, the thickness range of middle valve plate of the present invention is: 0.001mm-20mm comprises that laminated thickness, combination thickness are all in this scope.
Beneficial effect of the present invention is: be provided with the self-styled valve of anti back-flow, nipple wherein, coupling valve block are when guaranteeing normal infusion, because the apopore on the valve block has self-styled ability, under the effect of pump head pressure, can avoid causing blood back or infusing situation out of control under gravity or other pressure effects simultaneously.Material, thickness by the choose reasonable valve block among the present invention, and the length in valve block upper water-out hole make that the self-styled ability of valve block is better, for transfusion person's safety provides guarantee.
Description of drawings
Figure 1 shows that the specific embodiments of the invention structural representation;
Figure 2 shows that the self-styled valve arrangement sketch map of the anti back-flow of amplifying among Fig. 1;
Figure 3 shows that the another kind of form structure sketch map of the self-styled valve of anti back-flow;
Figure 4 shows that the first kind of form that sets out the water hole on the valve block;
Figure 5 shows that the second kind of form that sets out the water hole on the valve block;
Figure 6 shows that the third form that sets out the water hole on the valve block.
The specific embodiment
For content of the present invention is become apparent more, be further described below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, the present invention includes shell 3, be positioned at pump head 1, liquid storing bag 2, silicon capsule 4 and transfusion catheter 6 within the shell 3; Silicon capsule 4 is between pump head 1 and liquid storing bag 2; Pump head 1 is provided with can regular extruding silicon capsule 4, makes the actuator that air pressure changes in the silicon capsule 4; Pump head 1 is prior art, and actuator can be promoting mainly sheet 11 and being positioned at left valve block 12 and the right valve block 13 of promoting mainly sheet 11 both sides shown in Fig. 1; Liquid storing bag 2 is provided with outlet, and silicon capsule 4 one ends are connected with the outlet of liquid storing bag, and the other end is communicated with transfusion catheter 6; Also comprise pressure-control valve 5; Silicon capsule 4 is led between 6 pipes with transfusion and is connected by pressure-control valve 5;
Pressure-control valve 5 comprises nipple 51, coupling 52 and valve block 53;
Nipple 51 is provided with intake tunnel, and the water inlet of intake tunnel is communicated with silicon capsule 4; Coupling 52 is provided with exhalant canal, and the outlet of exhalant canal is communicated with transfusion catheter 6; Be tightly connected between nipple 51 and the coupling 52, and between nipple 51 and coupling 52, form an accommodation space 55 that is communicated with intake tunnel and exhalant canal, be used for ccontaining intake tunnel from nipple 51 by the medicinal liquid of valve block arrival coupling;
Valve block 53 adopts elastomeric material to make, and which is provided with apopore 531; Valve block 53 is positioned at above-mentioned accommodation space 55, and valve block 53 planes perpendicular to intake tunnel and exhalant canal axially, intake tunnel and exhalant canal are separated.
As shown in Figure 1, among the present invention between nipple 51 and the coupling 52 for clamping, coupling 52 is stuck in the nipple 51, and the access section is for being tightly connected, and makes 55 pairs of external seals of accommodation space, medicinal liquid can not ooze out from the junction of nipple and coupling.Nipple 51 is provided with bayonet socket with the junction periphery of coupling 52, pressure-control valve 5 connects and fixes on shell 3 by bayonet socket, make nipple 51 be positioned at shell 3, the part of coupling 52 is positioned at outside the shell 3, in use avoids because of displacement transfusion being impacted.
Arranging of middle valve plate 53 of the present invention can have various ways, in Fig. 2, valve block 53 is stuck between nipple 51 and coupling 52, perhaps valve block 53 connects coupling 52 by flexible member such as spring 54 as shown in Figure 3, active force lower disc 53 at spring 54 can be against on the intake tunnel outlet of nipple 51, makes medicinal liquid to pass through by the apopore on the valve block 53.
Among the present invention, because valve block adopts elastomeric material to make, so apopore has self-styled ability, can open automatically when pump head pressure is big, medicinal liquid can normally output to coupling and then enter transfusion catheter from nipple; And when the pressure on valve block two sides all hour, the valve block maintenance is self-styled can leakage.The factor that influences the self-styled ability of valve block mainly contains the thickness of the material of valve block, valve block, the length of apopore, and the material of valve block is preferably medical silica-gel or high-elastic PVC material, and elastic properties of materials is more good, and then the self-styled ability of valve block is more good; The thickness range of the preferred valve block of the present invention is: 0.001mm-20mm comprises combination thickness, multilayer build-up thickness.
In conjunction with Fig. 4 to Fig. 6, the apopore 531 on the middle valve plate 53 of the present invention can be in-line, as Fig. 4, perhaps is cross, as Fig. 5 and Fig. 6; If be cross, then the quantity of apopore can arrange one, also can have a plurality ofly, is clouded on the valve block, as shown in Figure 6; The length in valve block upper water-out hole is preferably: when apopore quantity was one, the length range of in-line apopore was: 0.01mm-30mm, and two arms length range separately that the cross apopore intersects is: 0.01mm-30mm; When apopore was a plurality of cross, two arms length range separately that intersects in the cross was: 0.01mm-30mm.
The present invention is when using, at first with syringe by transfusion catheter to also in liquid storing bag that pump head is combined, do not inject medicinal liquid, after having annotated pump head is installed in the shell, the liquid medicine in can the driven silicon capsule when making actuator action on the pump head is toward the intake tunnel stream of nipple; Begin transfusion work then.Nipple in the self-styled valve of anti back-flow, coupling valve block are when guaranteeing normal infusion, because the apopore on the valve block has self-styled ability, under the effect of pump head pressure, can avoid causing blood back or infusing situation out of control under gravity or other pressure effects simultaneously.Material, thickness by the choose reasonable valve block among the present invention, and the length in valve block upper water-out hole make that the self-styled ability of valve block is better, for transfusion person's safety provides guarantee.
Concrete case study on implementation only is preferable case study on implementation of the present invention described in the present invention, is not to limit practical range of the present invention.Be that all equivalences of doing according to the content of the present patent application claim change and modification, all should be as technology category of the present invention.
Claims (8)
1. a microinfusion pump comprises pump head, liquid storing bag, silicon capsule and transfusion catheter; Pump head is provided with can regular extruding silicon capsule, makes the actuator that air pressure changes in the silicon capsule; Liquid storing bag is provided with outlet, and silicon capsule one end is connected with the outlet of liquid storing bag, and the other end is communicated with transfusion catheter; It is characterized in that, also comprise pressure-control valve and shell; Be connected by pressure-control valve between silicon capsule and the transfusion catheter;
Pressure-control valve comprises nipple, coupling and valve block; The junction periphery of nipple and coupling in the pressure-control valve is provided with bayonet socket, and pressure-control valve connects and fixes on shell by bayonet socket;
Nipple is provided with intake tunnel, and the water inlet of intake tunnel is communicated with silicon capsule; Coupling is provided with exhalant canal, and the outlet of exhalant canal is communicated with transfusion catheter; Be tightly connected between nipple and the coupling, and between nipple and coupling, form an accommodation space that is communicated with intake tunnel and exhalant canal;
Valve block adopts elastomeric material to make, and which is provided with apopore; Valve block is positioned at above-mentioned accommodation space, and the valve block plane is axial perpendicular to intake tunnel and exhalant canal, and intake tunnel and exhalant canal are separated; And valve block simultaneously with between the coupling is connected by flexible member, and another side props up the outlet of intake tunnel in the nipple.
2. microinfusion pump according to claim 1 is characterized in that, is clamping between nipple and the coupling, and coupling is stuck in the nipple, and the access section is for being tightly connected.
3. microinfusion pump according to claim 1 is characterized in that, the apopore on the valve block is in-line, and the length range of apopore is: 0.01mm-30mm.
4. microinfusion pump according to claim 1 is characterized in that, the apopore on the valve block is cross.
5. microinfusion pump according to claim 1 is characterized in that, the apopore on the valve block is cross, and the quantity of apopore is more than 1.
6. microinfusion pump according to claim 1 is characterized in that, described flexible member is spring.
7. microinfusion pump according to claim 1 is characterized in that, the elastomeric material that valve block adopts is medical silica-gel or high-elastic PVC material.
8. microinfusion pump according to claim 1 is characterized in that, the thickness range of valve block is: 0.001mm-20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210012879 CN102512726B (en) | 2012-01-17 | 2012-01-17 | Microinfusion pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210012879 CN102512726B (en) | 2012-01-17 | 2012-01-17 | Microinfusion pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102512726A CN102512726A (en) | 2012-06-27 |
| CN102512726B true CN102512726B (en) | 2013-07-10 |
Family
ID=46283964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210012879 Expired - Fee Related CN102512726B (en) | 2012-01-17 | 2012-01-17 | Microinfusion pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102512726B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106267446B (en) * | 2016-09-05 | 2019-07-19 | 南通安诺医疗科技有限公司 | Safe medicine injecting pump adapted liquid bag |
| CN106730128B (en) * | 2016-12-01 | 2020-02-28 | 南通安诺医疗科技有限公司 | Safe medicine injection pump with displacement pressure detection function |
| CN113273983B (en) * | 2021-04-10 | 2023-12-15 | 南昌贝欧特医疗科技股份有限公司 | Invasive blood pressure monitoring system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GR1002892B (en) * | 1997-02-17 | 1998-04-10 | Micrel | Linear peristaltic pump |
| EP1166818A1 (en) * | 2000-06-29 | 2002-01-02 | Societe Des Produits Nestle S.A. | Medium cracking pressure valve |
| CN101374567B (en) * | 2006-01-17 | 2011-01-26 | 株式会社Jms | Water passage control device and medical infusion circuit using the same |
| CN101766851B (en) * | 2009-12-31 | 2012-09-26 | 北京鑫禾丰医疗技术有限公司 | Transfusion system |
| CN202446577U (en) * | 2012-01-17 | 2012-09-26 | 南京扬子医用制品有限公司 | Micro-infusion pump |
-
2012
- 2012-01-17 CN CN 201210012879 patent/CN102512726B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN102512726A (en) | 2012-06-27 |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: NANJING NINGCHUANG MEDICAL EQUIPMENT CO., LTD. XU Free format text: FORMER OWNER: XU ZHICHENG TIAN PEIHUA Effective date: 20130523 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20130523 Address after: 210038, 18, Hui Shi Road, Nanjing economic and Technological Development Zone, Jiangsu, China Applicant after: Nanjing Yangzi Medical Products Co., Ltd. Applicant after: Nanjing Ningchuang Medical Equipment Co., Ltd. Applicant after: Xu Zhicheng Address before: 210038, 18, Hui Shi Road, Nanjing economic and Technological Development Zone, Jiangsu, China Applicant before: Nanjing Yangzi Medical Products Co., Ltd. Applicant before: Xu Zhicheng Applicant before: Tian Peihua |
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| 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: 20130710 Termination date: 20170117 |
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| CF01 | Termination of patent right due to non-payment of annual fee |