CN105031764A - Micro piezoelectric type infusion apparatus - Google Patents
Micro piezoelectric type infusion apparatus Download PDFInfo
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- CN105031764A CN105031764A CN201510246222.6A CN201510246222A CN105031764A CN 105031764 A CN105031764 A CN 105031764A CN 201510246222 A CN201510246222 A CN 201510246222A CN 105031764 A CN105031764 A CN 105031764A
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- micro piezoelectric
- piezoelectric
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- infusion set
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Abstract
The invention relates to an infusion apparatus, and in particular relates to a micro piezoelectric type infusion apparatus, which comprises an infusion cavity located inside a shell and a piezoelectric type oscillating power device arranged inside the infusion cavity, wherein a liquid inlet and a liquid outlet are respectively communicated with the infusion cavity; a micro piezoelectric type infusion unit further comprises a matrix switch partition board and a matrix switch membrane; by the matrix switch partition board, the infusion cavity is divided into an oscillating cavity and a diversion cavity; a diversion channel is formed by surrounding the matrix switch partition board and the shell; one end of the diversion channel is communicated with the liquid inlet and the other end is communicated with the liquid outlet, and the diversion channel is also communicated with the oscillating cavity; the matrix switch membrane is located inside the diversion channel; one or more matrix switch membranes are provided with unidirectional diversion sheets; and the unidirectional diversion sheets are consistent in diversion direction. The infusion apparatus disclosed by the invention effectively combines multistage series unidirectional matrix switches and ceramic piezoelectric technology, improves the low back pressure and instable flow direction of a single gas-liquid switch and guarantees the unicity and accuracy of gas-liquid flow direction.
Description
Technical field
The present invention relates to a kind of without support infusion set, particularly relate to a kind of micro piezoelectric transfusion device.
Background technology
The medical Transfusion device of present use forms infusion bottle by three parts, transfusion device and fixed support, fixed support is absolutely necessary, the medical Transfusion device use principle of present use is that the height pressure reduction of infusion bottle and the human body utilizing fixed support to be formed carries out infusing, again due to the restriction of height pressure reduction, its transfusion speed has certain limit, and be totally lost time of liquid of No. 7 syringe needle 500ml is 80-90 minutes.Need the disease of quick infusion clinically, as dewater, lose blood greatly etc. adopts two-tube transfusion more, field condition is due to support bracket fastened limitation simultaneously, can not infuse whenever and wherever possible, affects treatment time adversely.Present infusion set needs infusion support, and the shortcoming of this kind of infusion model takes up room greatly, mobile inconvenient, is especially not suitable for first aid, field treatment, field operations treatment.Although there also have inventor to design to be different from support infusion set, its pressuring method is nothing but adopt force (forcing) pump, this mode complex structure, and needs electric power energy, uses and has certain limitation; Another kind of pressuring method adopts pressurised airbag, and this mode cannot ensure the constant voltage of infusing, and easily causes malpractice.And at number of patent application be: 200910104927.9 invention and created names are: disclose a kind of infusion set in " vertical self-absorption type piezoelectric ceramic pump ", piezoelectric ceramic piece is adopted to realize the object of infusing although it discloses, and have employed check valve to ensure the unipolarity of flow direction, but its structure transfusion speed is slow, and it will ensure uprightly, to use inconvenience.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the shortcoming of prior art, provide a kind of have excellent unipolarity and accuracy without the quick micro piezoelectric transfusion device of support.
In order to solve above technical problem, the invention provides micro piezoelectric transfusion device, comprise micro piezoelectric transfusion unit, described micro piezoelectric transfusion unit comprises housing, be positioned at the inlet of shell end, the liquid outlet being positioned at shell end and the transfusing chamber being positioned at housing shake power set with the piezoelectric type being positioned at transfusing chamber, described inlet and liquid outlet connect with transfusing chamber respectively and are connected with transfusing chamber, described piezoelectric type concussion power set comprise piezoelectric ceramic piece, the liquid inputted for making inlet is depressed into liquid outlet and flows out, described micro piezoelectric transfusion unit also comprises matrix switch dividing plate and matrix switch film, transfusing chamber is divided into turbulence cavity and diversion cavity by described matrix beginning dividing plate, described matrix switch dividing plate and housing surround flow-guiding channel, described flow-guiding channel one end is connected with inlet, the other end is connected with liquid outlet, and described flow-guiding channel is also connected with turbulence cavity, described matrix switch film is positioned at flow-guiding channel, described matrix switch film is one or more matrix switch films with unidirectional flow, the water conservancy diversion direction of described unidirectional flow is consistent.
Being further defined to of technical solution of the present invention, described piezoelectric ceramic piece is pressed on matrix switch dividing plate, and described matrix switch dividing plate is pressed on matrix switch film.
Being further defined to of technical solution of the present invention, described piezoelectric type concussion power set also comprise isolating membrane, and described piezoelectric ceramic piece is pressed on isolating membrane, and described isolating membrane is pressed on matrix switch dividing plate.
Being further defined to of technical solution of the present invention, described micro piezoelectric transfusion unit comprises two or more, they are mutually connected and are divided into two groups, wherein one group be micro piezoelectric infusion set one and wherein another group for micro piezoelectric infusion set two, micro piezoelectric infusion set one and micro piezoelectric infusion set two produce concussion simultaneously, work in vacuum state or pressure state simultaneously.
Being further defined to of technical solution of the present invention, in the first micro piezoelectric transfusion unit of micro piezoelectric infusion set one, the position that described flow-guiding channel is connected with turbulence cavity is positioned at the position near liquid outlet; In second micro piezoelectric transfusion unit of micro piezoelectric infusion set two, the position that described flow-guiding channel is connected with turbulence cavity is positioned at the position near inlet.
Being further defined to of technical solution of the present invention, when by micro piezoelectric transfusion device horizontal positioned, described flow-guiding channel is positioned at horizontal direction, and liquid outlet is then positioned at left side, and inlet is then positioned at right side.
Being further defined to of technical solution of the present invention, micro piezoelectric infusion set one comprises three group of first micro piezoelectric transfusion unit, and micro piezoelectric infusion set two comprises three group of second micro piezoelectric transfusion unit.
Being further defined to of technical solution of the present invention, described micro piezoelectric infusion set one and micro piezoelectric infusion set two lay respectively at two rows.
The invention has the beneficial effects as follows: owing to adopting piezoelectric ceramic piece, simultaneously structure is simple to decrease the volume of transfusion device, can realize in addition infusing without support, can not infuse whenever and wherever possible under solving field condition.Owing to adopting unidirectional gas-liquid matrix switch, the unipolarity that guaranteeing infuses flows and accuracy, the rapidity of infusing can also be realized, reduce the problem affecting treatment time adversely, the present invention combines the unidirectional matrix switch of plural serial stage and piezoelectric ceramics technology effectively, the wherein application of thtee-stage shiplock single-way switch matrix, improves the low back pressure of single gas-liquid switch and the unstability of the flow direction, ensure that unicity and the accuracy in Liquid Flow direction; The application of piezoelectric ceramics sheet, ensure that microminiaturization and the low energy consumption of transfusion device.Improve unipolarity and the accuracy of micro gas-liquid flow device.The present invention can be applicable to without support rapid infusion apparatus, and its advantage is that volume is little, transfusion fast and reliable, and need not fixed support, facilitates transfusion patient movable, is specially adapted to field emergency and needs the patient of quick infusion.It is blank that the present invention has filled up domestic market, can be widely used in biology, medicine, and agricultural etc. needs the field of carrying out molecular biology experiment.
Accompanying drawing explanation
Fig. 1 is the schematic diagram under the vacuum state of micro piezoelectric transfusion unit in micro piezoelectric infusion set one;
Fig. 2 is the schematic diagram under the pressure state of micro piezoelectric transfusion unit in micro piezoelectric infusion set two;
Fig. 3 is the first embodiment schematic top plan view of micro piezoelectric transfusion device.
In figure, 1 piezoelectric ceramic piece; 2 isolating membrane; 3 matrix switch dividing plates; 4 matrix switch films; 5 drain pans; 6 liquid outlets; 7 inlets; 8 top covers.
Detailed description of the invention
Shown in Fig. 3, micro piezoelectric transfusion device, comprise the micro piezoelectric infusion set one and micro piezoelectric infusion set two that are positioned at two rows, described micro piezoelectric infusion set one comprises three group of first micro piezoelectric transfusion unit, and micro piezoelectric infusion set two comprises three group of second micro piezoelectric transfusion unit.As shown in Figure 1, described first, second micro piezoelectric transfusion unit comprises housing, described housing comprises top cover 8 and drain pan 5, described top cover 8 is placed on drain pan 5, its center is hollow, form transfusing chamber, namely this transfusing chamber is positioned at housing, inlet 7 and liquid outlet 6 is had respectively in the end, the left and right sides of housing, described inlet 7 and liquid outlet 6 connect with transfusing chamber respectively and are connected with transfusing chamber, first, second micro piezoelectric transfusion unit also comprises piezoelectric type concussion power set and unidirectional gas-liquid matrix switch, described unidirectional gas-liquid matrix switch comprises matrix switch dividing plate 3 and matrix switch film 4, described transfusing chamber is divided into turbulence cavity and diversion cavity by matrix switch dividing plate 3, described piezoelectric type concussion power set are positioned at turbulence cavity, the liquid inputted for making inlet is depressed into liquid outlet and flows out, described unidirectional gas-liquid matrix switch is arranged in diversion cavity, described piezoelectric type concussion power set comprise piezoelectric ceramic piece and isolating membrane, described piezoelectric ceramic piece is pressed on isolating membrane, described isolating membrane is pressed on matrix switch dividing plate.Described matrix switch dividing plate and drain pan surround flow-guiding channel, and described matrix switch dividing plate is pressed on matrix switch film.Described matrix switch film is positioned at flow-guiding channel, described flow-guiding channel one end is connected with inlet, the other end is connected with liquid outlet, and described flow-guiding channel is also connected with turbulence cavity, when by micro piezoelectric transfusion device horizontal positioned, micro piezoelectric transfusion device unit also horizontal positioned, described flow-guiding channel is positioned at horizontal direction, the liquid outlet of micro piezoelectric transfusion device is then positioned at left side, and the inlet of micro piezoelectric transfusion device is then positioned at right side.For in the first micro piezoelectric transfusion unit, the position that described flow-guiding channel is connected with turbulence cavity is positioned at the position near liquid outlet.For in the second micro piezoelectric transfusion unit, the position that described flow-guiding channel is also connected with turbulence cavity is positioned at the position near inlet.Described matrix switch film is one or more matrix switch films with unidirectional flow, and the water conservancy diversion direction of described unidirectional flow is consistent.
Operation principle for micro piezoelectric transfusion device is as follows: when piezoelectric patches shakes, earthquake intracavity produces vacuum and pressure alternately concussion, drive micro piezoelectric infusion set one and micro piezoelectric infusion set two to be in vacuum state or pressure state simultaneously, namely when micro piezoelectric infusion set one and assembly two produce vacuum, the micro piezoelectric infusion set one of front-seat thtee-stage shiplock is opened, the micro piezoelectric infusion set two of rear row's thtee-stage shiplock is closed, liquid is inputed in flow-guiding channel and turbulence cavity from inlet 7, and when second micro piezoelectric infusion set one and assembly produce pressure, the micro piezoelectric infusion set one of front-seat thtee-stage shiplock is closed, the micro piezoelectric infusion set two of rear row's thtee-stage shiplock is opened, make liquid from turbulence cavity press-in flow-guiding channel and liquid outlet thus liquid is flowed out from liquid outlet 6, circulation like this completes the output of liquid.
For with pre-structure, micro piezoelectric infusion set one and micro piezoelectric infusion set two also can select the micro piezoelectric transfusion unit of two or other number, in addition, matrix switch dividing plate of the present invention can be matrix switch duroplasts dividing plate, matrix switch film can be matrix switch pellosil, isolating membrane can be silica gel isolating membrane, and drain pan can be duroplasts drain pan.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of application claims.
Claims (8)
1. micro piezoelectric transfusion device, comprise micro piezoelectric transfusion unit, described micro piezoelectric transfusion unit comprises housing, be positioned at the inlet of shell end, the liquid outlet being positioned at shell end and the transfusing chamber being positioned at housing shake power set with the piezoelectric type being positioned at transfusing chamber, described inlet and liquid outlet connect with transfusing chamber respectively and are connected with transfusing chamber, described piezoelectric type concussion power set comprise piezoelectric ceramic piece, the liquid inputted for making inlet is depressed into liquid outlet and flows out, it is characterized in that: described micro piezoelectric transfusion unit also comprises matrix switch dividing plate and matrix switch film, transfusing chamber is divided into turbulence cavity and diversion cavity by described matrix beginning dividing plate, described matrix switch dividing plate and housing surround flow-guiding channel, described flow-guiding channel one end is connected with inlet, the other end is connected with liquid outlet, and described flow-guiding channel is also connected with turbulence cavity, described matrix switch film is positioned at flow-guiding channel, described matrix switch film is one or more matrix switch films with unidirectional flow, the water conservancy diversion direction of described unidirectional flow is consistent.
2. micro piezoelectric transfusion device according to claim 1, is characterized in that: described piezoelectric ceramic piece is pressed on matrix switch dividing plate, and described matrix switch dividing plate is pressed on matrix switch film.
3. micro piezoelectric transfusion device according to claim 2, is characterized in that: described piezoelectric type concussion power set also comprise isolating membrane, and described piezoelectric ceramic piece is pressed on isolating membrane, and described isolating membrane is pressed on matrix switch dividing plate.
4. micro piezoelectric transfusion device according to claim 1 and 2, it is characterized in that: described micro piezoelectric transfusion unit comprises two or more, they are mutually connected and are divided into two groups, wherein one group be micro piezoelectric infusion set one and wherein another group for micro piezoelectric infusion set two, micro piezoelectric infusion set one and micro piezoelectric infusion set two produce concussion simultaneously, work in vacuum state or pressure state simultaneously.
5. micro piezoelectric transfusion device according to claim 4, is characterized in that: in the first micro piezoelectric transfusion unit of micro piezoelectric infusion set one, and the position that described flow-guiding channel is connected with turbulence cavity is positioned at the position near liquid outlet; In second micro piezoelectric transfusion unit of micro piezoelectric infusion set two, the position that described flow-guiding channel is connected with turbulence cavity is positioned at the position near inlet.
6. micro piezoelectric transfusion device according to claim 5, is characterized in that: when by micro piezoelectric transfusion device horizontal positioned, described flow-guiding channel is positioned at horizontal direction, and liquid outlet is then positioned at left side, and inlet is then positioned at right side.
7. micro piezoelectric transfusion device according to claim 4, is characterized in that: micro piezoelectric infusion set one comprises three group of first micro piezoelectric transfusion unit, and micro piezoelectric infusion set two comprises three group of second micro piezoelectric transfusion unit.
8. micro piezoelectric transfusion device according to claim 7, is characterized in that: described micro piezoelectric infusion set one and micro piezoelectric infusion set two lay respectively at two rows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510246222.6A CN105031764B (en) | 2014-06-17 | 2015-05-15 | Micro piezoelectric infusion apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410268917X | 2014-06-17 | ||
| CN201410268917.XA CN104083815A (en) | 2014-06-17 | 2014-06-17 | Micro piezoelectric infusion apparatus |
| CN201510246222.6A CN105031764B (en) | 2014-06-17 | 2015-05-15 | Micro piezoelectric infusion apparatus |
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| Publication Number | Publication Date |
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| CN105031764A true CN105031764A (en) | 2015-11-11 |
| CN105031764B CN105031764B (en) | 2019-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410268917.XA Pending CN104083815A (en) | 2014-06-17 | 2014-06-17 | Micro piezoelectric infusion apparatus |
| CN201510246222.6A Active CN105031764B (en) | 2014-06-17 | 2015-05-15 | Micro piezoelectric infusion apparatus |
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| CN201410268917.XA Pending CN104083815A (en) | 2014-06-17 | 2014-06-17 | Micro piezoelectric infusion apparatus |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107126591A (en) * | 2017-04-17 | 2017-09-05 | 深圳市体太赫兹科技有限公司 | Dual chamber infusion pump and infusion device 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 |
| 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 |
| CN110665089B (en) * | 2019-09-20 | 2021-10-19 | 浙江师范大学 | Electrostatic peristaltic pump for blood conveying |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0134614A1 (en) * | 1983-08-15 | 1985-03-20 | Vitafin N.V. | Piezo-electrical micropump |
| US20040001767A1 (en) * | 2002-07-01 | 2004-01-01 | Peters Richard D. | Piezoelectric micropump with diaphragm and valves |
| CN101608610A (en) * | 2008-06-20 | 2009-12-23 | 微创医疗器械(上海)有限公司 | A kind of micropump |
| CN102691693A (en) * | 2012-05-23 | 2012-09-26 | 浙江师范大学 | Precision stepping hydraulic cylinder driven by piezo-electricity wafer |
| CN204864337U (en) * | 2015-05-15 | 2015-12-16 | 南京山诺生物科技有限公司 | Miniature piezoelectric type transfusion system |
-
2014
- 2014-06-17 CN CN201410268917.XA patent/CN104083815A/en active Pending
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2015
- 2015-05-15 CN CN201510246222.6A patent/CN105031764B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0134614A1 (en) * | 1983-08-15 | 1985-03-20 | Vitafin N.V. | Piezo-electrical micropump |
| US20040001767A1 (en) * | 2002-07-01 | 2004-01-01 | Peters Richard D. | Piezoelectric micropump with diaphragm and valves |
| CN101608610A (en) * | 2008-06-20 | 2009-12-23 | 微创医疗器械(上海)有限公司 | A kind of micropump |
| CN102691693A (en) * | 2012-05-23 | 2012-09-26 | 浙江师范大学 | Precision stepping hydraulic cylinder driven by piezo-electricity wafer |
| CN204864337U (en) * | 2015-05-15 | 2015-12-16 | 南京山诺生物科技有限公司 | Miniature piezoelectric type transfusion system |
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| Publication number | Publication date |
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| CN104083815A (en) | 2014-10-08 |
| CN105031764B (en) | 2019-01-25 |
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