CN104454472A - Piezoelectric micropump for injecting insulin - Google Patents
Piezoelectric micropump for injecting insulin Download PDFInfo
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- CN104454472A CN104454472A CN201310417797.0A CN201310417797A CN104454472A CN 104454472 A CN104454472 A CN 104454472A CN 201310417797 A CN201310417797 A CN 201310417797A CN 104454472 A CN104454472 A CN 104454472A
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- micropump
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Abstract
The invention discloses a piezoelectric micropump for injecting insulin, and relates to a structure improvement of the piezoelectric micropump. The invention provides the piezoelectric micropump for injecting the insulin; and the micropump is stable in working performance, and facilitates precise flow control. The micropump comprises a pump body, wherein the pump body consists of a water inlet in the lower part, a water outlet and a cavity in the upper part. The micropump is characterized in that an inlet valve and an outlet valve are arranged in openings, corresponding to the water inlet and the water outlet, in the lower part of the cavity; the inlet valve and the outlet valve are elastic plates; the inlet valve is arranged in the cavity corresponding to the water inlet; the outlet valve is arranged in an outlet, corresponding to the water outlet, outside the cavity; and the upper wall of the cavity consists of piezoelectric vibrators.
Description
Technical field
the present invention relates to a kind of improvement of piezoelectric micropump structure.
Background technique
the method of current intensification therapy of diabetes mellitus patients is mainly additional drawbacks every day (MDI) and insulin pump, wherein insulin pump is treated also known as continuous subcutaneous insulin infusion (CSII), be through the best means that clinical verification is considered to control blood sugar, the diabetes patient of existing more than 200,000 benefits from this in the world.
the insulin pump used clinically is Dou Shi conventional motion mechanism substantially, adopts one-level or secondary drive mechanism.But the conventional motion pattern that present insulin pump adopts is difficult to accomplish fine adjustment, real more fine and smooth simulation pancreas work also to have any problem.And existing insulin pump service behaviour is unstable and be not easy to precise control of flew.
Summary of the invention
the present invention is exactly for the problems referred to above, provides a kind of stable work in work and is easy to the piezoelectric micropump for insulin bolus of precise control of flew.
to achieve these goals, the present invention adopts following technological scheme, the present invention includes the pump housing, the pump housing is made up of the cavity on the water inlet of bottom, water outlet and top, its structure outline is: the opening of cavity bottom and water inlet and water outlet corresponding position is provided with inlet valve and outlet valve, inlet valve and outlet valve are a kind of elastic plate, and inlet valve is arranged in cavity and water inlet corresponding position, and outlet valve is be arranged on the outer outlet port corresponding to water outlet of cavity; The upper wall of cavity is made up of piezoelectric vibrator.
as a kind of preferred version, described piezoelectricity a period of time is composited by piezoelectric chip and metal substrate.
beneficial effect of the present invention.
the present invention includes the pump housing, the pump housing is made up of the cavity on the water inlet of bottom, water outlet and top, the opening of cavity bottom and water inlet and water outlet corresponding position is provided with inlet valve and outlet valve, inlet valve and outlet valve are a kind of elastic plate, inlet valve is arranged in cavity and water inlet corresponding position, and outlet valve is be arranged on the outer outlet port corresponding to water outlet of cavity; The upper wall of cavity is made up of piezoelectric vibrator.During work, piezoelectric vibrator produces upper and lower flexure vibrations under the effect of alternate electrical signal, causes the change of cavity internal volume and pressure, when piezoelectric vibrator is bent upwards, pump chamber volume increase, cavity fluid pressure reduce, at this moment inlet valve open, outlet valve close, fluid flows in chamber; On the contrary, when piezoelectric vibrator is bent downwardly, pump chamber volume reduces, pressure increases, and inlet valve cuts out, outlet valve is opened, and fluid is discharged in pump chamber.Such piezoelectric pump completes one and makes process from the pump complete Pumpman of draining that absorbs water in an electrical signal pulse process; This flow in process has electrical signal Pulse Width Control, therefore described piezoelectric micropump stable work in work and be easy to precise control of flew.
Accompanying drawing explanation
for technical problem solved by the invention, technological scheme and beneficial effect are clearly understood, below in conjunction with the drawings and the specific embodiments, the present invention is further elaborated.Should be appreciated that embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
fig. 1 is structural drawing of the present invention.
1 be water outlet, 2 be piezoelectric vibrator in figure, 3 be outlet valve, 4 be cavity, 5 be inlet valve, 6 be the pump housing, 7 for water inlet.
Embodiment
as shown in the figure, the present invention includes the pump housing 6, the pump housing 6 is made up of the cavity 4 on the water inlet 7 of bottom, water outlet 7 and top, the opening of cavity 4 bottom and water inlet 7 and water outlet 1 corresponding position is provided with inlet valve 5 and outlet valve 3, inlet valve 5 and outlet valve 3 are a kind of elastic plate, inlet valve 5 is arranged in cavity 4 and water inlet 7 corresponding position, and outlet valve 3 is for being arranged on the outer outlet port corresponding to water outlet 1 of cavity 4; The upper wall of cavity 4 is made up of piezoelectric vibrator 2.
described piezoelectricity a period of time 2 is composited by piezoelectric chip and metal substrate.
below in conjunction with accompanying drawing, one-off process of the present invention is described.
during work, piezoelectric vibrator 2 produces upper and lower flexure vibrations under the effect of alternate electrical signal, causes the change of cavity 4 internal volume and pressure.When piezoelectric vibrator 2 is bent upwards, pump chamber 4 volume increases, cavity fluid pressure reduces, and at this moment inlet valve 5 is opened, outlet valve 3 cuts out, and fluid flows in chamber; On the contrary, when piezoelectric vibrator 2 is bent downwardly, cavity 4 volume reduces, pressure increases, and inlet valve 5 cuts out, outlet valve 3 is opened, and fluid is discharged in cavity 4.Such piezoelectric pump completes one and to absorb water the complete working procedure of draining from pump in an electrical signal pulse process.
above content is the further description done the present invention in conjunction with concrete preferred implementation; can not assert that specific embodiment of the invention is confined to these explanations; for general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; some simple deduction or replace can also be made, all should be considered as belonging to the protection domain that claims that the present invention submits to are determined.
Claims (2)
1. the piezoelectric micropump for insulin bolus the present invention includes the pump housing (6), the pump housing (6) is made up of the cavity (4) on the water inlet (7) of bottom, water outlet (7) and top, the opening of cavity (4) bottom and water inlet (7) and water outlet (1) corresponding position is provided with inlet valve (5) and outlet valve (3), inlet valve (5) and outlet valve (3) are a kind of elastic plate, inlet valve (5) is arranged in cavity (4) and water inlet (7) corresponding position, and outlet valve (3) is for being arranged on cavity (4) the corresponding outlet port with water outlet (1) outward; The upper wall of cavity (4) is made up of piezoelectric vibrator (2).
2. the piezoelectric micropump for insulin bolus according to claim 1, is characterized in that piezoelectricity a period of time (2) is composited by piezoelectric chip and metal substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310417797.0A CN104454472A (en) | 2013-09-15 | 2013-09-15 | Piezoelectric micropump for injecting insulin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310417797.0A CN104454472A (en) | 2013-09-15 | 2013-09-15 | Piezoelectric micropump for injecting insulin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104454472A true CN104454472A (en) | 2015-03-25 |
Family
ID=52901067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310417797.0A Pending CN104454472A (en) | 2013-09-15 | 2013-09-15 | Piezoelectric micropump for injecting insulin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104454472A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106939882A (en) * | 2017-02-14 | 2017-07-11 | 珠海普生医疗科技有限公司 | A kind of pump of flow-controllable |
| CN107007906A (en) * | 2017-04-17 | 2017-08-04 | 深圳市体太赫兹科技有限公司 | The liquid infusion methods and system accurately controlled based on piezoelectricity |
| CN107080878A (en) * | 2017-04-17 | 2017-08-22 | 深圳市体太赫兹科技有限公司 | Infusion pump and infusion device based on Piezoelectric Driving |
| CN107795473A (en) * | 2016-09-05 | 2018-03-13 | 研能科技股份有限公司 | Fluid control device |
-
2013
- 2013-09-15 CN CN201310417797.0A patent/CN104454472A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107795473A (en) * | 2016-09-05 | 2018-03-13 | 研能科技股份有限公司 | Fluid control device |
| CN107795473B (en) * | 2016-09-05 | 2019-04-05 | 研能科技股份有限公司 | Fluid control device |
| CN106939882A (en) * | 2017-02-14 | 2017-07-11 | 珠海普生医疗科技有限公司 | A kind of pump of flow-controllable |
| CN107007906A (en) * | 2017-04-17 | 2017-08-04 | 深圳市体太赫兹科技有限公司 | The liquid infusion methods and system accurately controlled based on piezoelectricity |
| CN107080878A (en) * | 2017-04-17 | 2017-08-22 | 深圳市体太赫兹科技有限公司 | Infusion pump and infusion device based on Piezoelectric Driving |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150325 |
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| WD01 | Invention patent application deemed withdrawn after publication |