CN109821100A - A kind of pneumatic infusion device of booster-type step by step - Google Patents
A kind of pneumatic infusion device of booster-type step by step Download PDFInfo
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- CN109821100A CN109821100A CN201910191214.4A CN201910191214A CN109821100A CN 109821100 A CN109821100 A CN 109821100A CN 201910191214 A CN201910191214 A CN 201910191214A CN 109821100 A CN109821100 A CN 109821100A
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- outlet plenum
- body cavity
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Abstract
The present invention relates to a kind of pneumatic infusion devices of booster-type step by step, belong to medical instruments field.Cabinet is equipped with cushion chamber and upper and lower access hole, and two sides are designed with outlet plenum and at least two from the body cavity for entering hole and being all sequentially reduced to bore dia out to cabinet up and down, and body cavity is equipped with snout cavity and venthole；Disengaging oral cavity and the valve block in it respectively constitute terminal valve；Upper cover and bottom plate are mounted in two sides above and below cabinet and piezoelectric actuator is crimped in each body cavity and constitutes compression chamber by sealed circle；Enter hole, each compression chamber and outlet plenum on top of the box and be connected into compression unit, the tripping in hole of the bottom of box, each compression chamber, outlet plenum and under portal and be connected into lower compression unit, upper and lower compression unit is connected through cushion chamber；In work, the deformation direction of two or so neighboring actuators is opposite in upper and lower compression unit；The blister cavities of upper cover is provided with the infusion bag with air cavity and medicine cavity, has syringe needle and flow valve on the perfusion tube of medicine cavity, and air cavity is by the road and switch valve is connect with above portalling.
Description
Technical field
The invention belongs to medical instruments fields, and in particular to a kind of pneumatic infusion device of booster-type step by step.
Background technique
Drug administration by injection mainly has intravenous injection, intramuscular injection and subcutaneous injection etc..Intravenous injection is also referred to as infusion administration, existing
Infusion device is mostly made of infusion bottle, perfusion tube and infusion support, and infusion bottle is hung on infusion support, is self-possessed by medical fluid and flows
And it is injected into the blood vessel of people through perfusion tube.This infusion mode can bring many problems in actual use: pass through side manually
Method adjusts flow, and flow control accuracy is inadequate；Patient walks about, go to the toilet when need other people to hold infusion bottle high, activity is inconvenient
And it can also make blood backflow when infusion bottle insufficient height；It needs patient or nursing staff to guard for a long time, such as finds not in time defeated
Liquid completion may also result in accident；Medical fluid is contacted with air, and there are also contaminated possibilities when surrounding air is unclean.In addition to above-mentioned
Outside immediate problem, also it can shorten transfusion time by reducing the methods of amount of solution, quickening transfusion speed sometimes, this is not only aggravated
Heart burden, also affects therapeutic effect: intramuscular injection is with subcutaneous injection by drug injection to flesh within the relatively short time
Meat is subcutaneous, and maximum drawback is that blood concentration differs greatly in an injection cycle, is unfavorable for the effective absorption and benefit of drug
With, because are as follows: most drugs have preferred concentration range in human body, when drug concentration is excessively high have toxic side effect, it is too low when
To not have therapeutic effect.Therefore, the microminiature Portable medicine controlled release that the drug injection time can be extended, keep reasonable drug concentration
Device or system is urgently needed for current medical field.
Summary of the invention
The present invention proposes that a kind of pneumatic infusion device of booster-type, embodiment of the present invention step by step are: being equipped in the middle part of cabinet
Cushion chamber, top are equipped with upper access hole, bottom is equipped with lower access hole, and cabinet is designed with outlet plenum and at least two bodies in two sides up and down
Chamber；Enter hole from above to be all sequentially reduced to the body lumen diameter above to portal and tripping in hole is portalled under, body cavity is equipped with snout cavity and goes out
Stomata；Top of the box, the snout cavity of diameter maximum body cavity is above entered, and hole is connected to cushion chamber, the venthole of diameter minimum body cavity passes through
Outlet plenum is connected to the b2 that above portals；The bottom of box, the snout cavity of diameter maximum body cavity is connected to tripping in hole, diameter minimum body cavity
Venthole through outlet plenum and under portal and be connected to cushion chamber；The snout cavity of the adjacent body cavity in remaining left and right is connected to venthole；Into
Outlet plenum and the valve block filled in it respectively constitute terminal valve, and valve block is cantilever valve or disc structure；Upper cover and bottom plate warp
Screw is mounted on cabinet or more two sides and sealing ring is crimped in outlet plenum, and the sealed circle of upper cover and bottom plate crimps driver
Compression chamber is constituted in each body cavity, sealing ring is located at driver two sides up and down, and driver is piezoelectric actuator, and driver is by substrate
It is formed with piezoelectric piece bonding, actuator surface is coated with insulated paint or is bonded with insulation film；Enter hole, each compression on top of the box
Chamber, outlet plenum and on portal and be connected into compression unit, the tripping in hole of the bottom of box, each compression chamber, outlet plenum and under portal string
It is unified into lower compression unit, upper and lower compression unit is connected through cushion chamber；In work, two or so neighboring actuators in upper and lower compression unit
Deformation direction it is opposite；The blister cavities of upper cover is provided with the infusion bag with air cavity and medicine cavity, on the perfusion tube of medicine cavity with syringe needle and
Flow valve, air cavity is by the road and switch valve is connect with above portalling；Upper and lower compression unit, which is that air cavity gas supply is preceding, first turns off the switch valve, to
Air pressure is then turned on after reaching setting value in cushion chamber.
By have there are three driver infusion device for, from upper tripping in hole to outlet plenum, inlet valve be successively defined as into
Mouth valve one, two and three, driver are successively defined as driver one, two and three, and compression chamber is successively defined as compression chamber one, two and
Three；Then descend the specific work process of compression unit II are as follows: upper half period, the downward bending deformation of driver one and three, driver two
It is bent upwards deformation, inlet valve one and three is opened, inlet valve two and outlet valve are closed, and compression chamber one and three sucks gas, compression
Gas is discharged in chamber two, this is suction process；Lower half period, the upward bending deformation of driver one and three, driver two are bent downwardly
Deformation, inlet valve one and three is closed, inlet valve two and outlet valve are opened, and gas is discharged in compression chamber one and three, compression chamber two sucks
Gas, this is discharge process；It passes through down and portals into slow after the step by step compression of gas experience compression chamber one, two and three in compression unit
Rush chamber；Similarly, upper compression unit sucks gas from cushion chamber, again through switch valve after compression chamber one, two and three step by step compression
And appendix enters air cavity, so that medicine cavity output medical fluid is squeezed, driving voltage or infusion of the medical fluid output speed by driver
Flow valve regulation on pipe.
In the present invention, the maximum gas pressure of the output of upper and lower compression unit is Pmax=P0ηp{(1+α)/(1-α)[β+(1+
α)/(1-α)]n-1- 1 }, in which: P0It is standard atmospheric pressure to lower compression unit, is the gas pressure in cushion chamber to upper compression unit
Power, ηpFor correction factor, α > 0 be compression ratio, the i.e. caused compression chamber volume variable quantity of driver deformation and compression chamber volume it
Than β > 1 is the radius ratio of two or so adjacent compression chambers, and n >=2 are the compression chamber quantity of up or down compression unit；It is maximum to obtain
Compression ratio, compression chamber height are equal to the deflection of driver central point, and driver is glued by equal thickness PZT4 chip and brass substrate
The height of compression chamber is when connecingηh、U0Respectively dynamic corrections coefficient and driving voltage, d31
For piezoelectric constant, hpFor piezoelectric patches thickness, riFor the inner circle radius of sealing ring in compression chamber radius, i.e. compression chamber.
Advantage and characteristic: gas pressure can be increased substantially using the method for accumulation compression；Using gas-powered medical fluid, easily
In accurately controlling transfusion speed by driving voltage, without erecting by overhang, it is moved easily and carries；Medical fluid does not connect with air
It touches, phenomena such as medical fluid is contaminated, gas enters blood vessel and backflow of blood will not occur, without guard in real time, securely and reliably.
Detailed description of the invention
Fig. 1 is the structural profile illustration of infusion device in a preferred embodiment of the present invention；
Fig. 2 is the structural schematic diagram of upper cover in a preferred embodiment of the present invention；
Fig. 3 is the structural schematic diagram of cabinet in a preferred embodiment of the present invention；
Fig. 4 is the top view of Fig. 3；
Fig. 5 is the structural schematic diagram of driver in a preferred embodiment of the present invention；
Fig. 6 is structural schematic diagram when infusion device works in a preferred embodiment of the present invention.
Specific embodiment
The middle part of cabinet b be equipped with cushion chamber b7, top be equipped with above enter hole b3 and on portal b2, bottom be equipped with tripping in hole b3 '
Portal b2 ' under, and the two sides cabinet b or more are designed with outlet plenum b6 and at least two body cavity b1i；Enter hole b3 to the b2 that above portals from above
It is all sequentially reduced with portal under the diameter of the body cavity b1i of b2 ' of tripping in hole b3 ', the roof or bottom wall of body cavity b1i is equipped with import
Chamber b4 and venthole b5；At the top of cabinet b, the snout cavity b4 of diameter maximum body cavity b1i is above entered hole b3 and is connected to cushion chamber b7, is straight
The venthole b5 of diameter minimum body cavity b1i is connected to through outlet plenum b6 with the b2 that above portals；The bottom cabinet b, diameter maximum body cavity b1i into
Oral cavity b4 is connected to tripping in hole b3 ', the venthole b5 of diameter minimum body cavity b1i through outlet plenum b6 and under portal b2 ' and cushion chamber
B7 connection；The snout cavity b4 of the adjacent body cavity b1i in remaining left and right is connected to venthole b5；In snout cavity b4 and outlet plenum b6 and its
The valve block e installed respectively constitutes inlet valve vi and outlet valve v, and valve block e is cantilever valve or disc structure；Upper cover a and bottom plate c
The two sides up and down of cabinet b are mounted on through screw and sealing ring is crimped in outlet plenum b6, and upper cover a and the sealed circle of bottom plate c will
Driver di, which is crimped in each body cavity b1i, constitutes compression chamber Ci, and sealing ring is located at the two sides driver di or more, and driver di is pressure
Electric drive, driver di are bonded by substrate di1 and piezoelectric patches di2, and the surface driver di is coated with insulated paint or is bonded with
Insulation film；Enter at the top of cabinet b hole b3, each compression chamber Ci, outlet plenum b6 and on the b2 that portals be connected into compression unit I,
The tripping in hole b3 ' of the bottom cabinet b, each compression chamber Ci, outlet plenum b6 and under the b2 ' that portals be connected into lower compression unit II, upper pushing
Contracting unit I and II connects through cushion chamber b7；Two or so adjacent compressions in work, in upper compression unit I or lower compression unit II
The deformation direction of driver di is opposite in chamber Ci；The blister cavities a2 of upper cover a is provided with the infusion bag y with air cavity y1 and medicine cavity y2, medicine
Syringe needle and flow valve m are had on the perfusion tube q of chamber y2, air cavity y1 is by the road and switch valve j is connect with the b2 that above portals；Compression up and down
Unit I and II, which are that air cavity y1 gas supply is preceding, first turns off the switch valve j, and air pressure is then turned on after reaching setting value in chamber b7 to be buffered.
In the present invention, the i representative in inlet valve vi, driver di and compression chamber Ci enters hole b3 from above or tripping in hole b3 ' is arrived
Outlet plenum b6 serial number, i=1,2,3 ...；For having the infusion device there are three driver di, inlet valve vi is successively defined as
One v1 of inlet valve, two v2 and three v3, driver di are successively defined as one d1 of driver, two d2 and three d3, and compression chamber Ci is successively fixed
Justice is one C1 of compression chamber, two C2 and three C3；Then descend the specific work process of compression unit II are as follows: upper half period, one d1 of driver
Be bent downwardly deformation with three d3, two d2 of driver is bent upwards deformation, inlet valve one v1 and three v3 open, two v2 of inlet valve and go out
Mouth valve v is closed, and compression chamber one C1 and three C3 suck gas, gas is discharged in two C2 of compression chamber, this is suction process；The lower half period,
Driver one d1 and three d3 are bent upwards deformation, two d2 of driver is bent downwardly deformation, inlet valve one v1 and three v3 closing, import
Valve two v2 and outlet valve v are opened, and gas is discharged in compression chamber one C1 and three C3, two C2 of compression chamber sucks gas, this is discharge process；
The b2 ' that portals, which is passed through down, after the step by step compression of gas experience one C1 of compression chamber, two C2 and three C3 in compression unit II enters cushion chamber b7；
Similarly, upper compression unit I sucks gas from cushion chamber b7, again through opening after one C1 of compression chamber, two C2 and three C3 step by step compression
It closes valve j and appendix enters air cavity y1, to squeeze medicine cavity y2 output medical fluid, medical fluid output speed passes through the driving of driver di
Flow valve m on voltage or perfusion tube q is adjusted.
In the present invention, the maximum gas pressure of the output of upper and lower compression unit I and II is Pmax=P0ηp{(1+α)/(1-α)
[β+(1+α)/(1-α)]n-1- 1 }, in which: P0It is standard atmospheric pressure to lower compression unit I, is cushion chamber to upper compression unit II
Gas pressure in b7, ηpFor correction factor, compression chamber Ci volume caused by α > 0 is compression ratio, i.e. driver di is deformed changes
The ratio between the volume of amount and compression chamber Ci, β > 1 are the radius ratio of two or so adjacent compression chamber Ci, and n >=2 are up or down compression unit
Compression chamber Ci quantity；To obtain maximum compression ratio, the height of compression chamber Ci is equal to the deflection of driver di central point, driving
The height of compression chamber Ci is when device di is formed by equal thickness PZT4 chip with brass substrate bonding
ηh、U0Respectively dynamic corrections coefficient and driving voltage, d31For piezoelectric constant, hpFor the thickness of piezoelectric patches di2, riFor compression chamber
The inner circle radius of sealing ring in Ci radius, i.e. compression chamber Ci.
Claims (1)
1. a kind of pneumatic infusion device of booster-type step by step, it is characterised in that: be equipped with cushion chamber in the middle part of cabinet, top is equipped with upper discrepancy
Hole, bottom are equipped with lower access hole, and cabinet is designed with outlet plenum and at least two body cavitys in two sides up and down；Enter from above hole to above portalling and
The body lumen diameter that tripping in hole is portalled under is all sequentially reduced, and body cavity is equipped with snout cavity and venthole；Top of the box, diameter are maximum
The snout cavity of body cavity is above entered, and hole is connected to cushion chamber, the venthole of diameter minimum body cavity is connected to through outlet plenum with above portalling；Case
Body bottom, the snout cavity of diameter maximum body cavity is connected to tripping in hole, the venthole of diameter minimum body cavity through outlet plenum and under portal
It is connected to cushion chamber；The snout cavity of the adjacent body cavity in remaining left and right is connected to venthole；Disengaging oral cavity and the valve block filled in it
Respectively constitute terminal valve；Upper cover and bottom plate are mounted in two sides above and below cabinet and sealing ring are crimped in outlet plenum, upper lid and bottom
Piezoelectric actuator is crimped in each body cavity by the sealed circle of plate constitutes compression chamber；Enter hole, each compression chamber, outlet on top of the box
Chamber and on portal and be connected into compression unit, the tripping in hole of the bottom of box, each compression chamber, outlet plenum and under portal and be connected into pushing
Contracting unit, upper and lower compression unit are connected through cushion chamber；In work, the deformation side of two or so neighboring actuators in upper and lower compression unit
To opposite；The blister cavities of upper cover is provided with the infusion bag with air cavity and medicine cavity, has syringe needle and flow valve, gas on the perfusion tube of medicine cavity
Chamber is by the road and switch valve is connect with above portalling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910191214.4A CN109821100B (en) | 2019-03-01 | 2019-03-01 | Step-by-step booster-type pneumatic infusion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910191214.4A CN109821100B (en) | 2019-03-01 | 2019-03-01 | Step-by-step booster-type pneumatic infusion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109821100A true CN109821100A (en) | 2019-05-31 |
| CN109821100B CN109821100B (en) | 2021-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910191214.4A Active CN109821100B (en) | 2019-03-01 | 2019-03-01 | Step-by-step booster-type pneumatic infusion device |
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| Country | Link |
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| CN (1) | CN109821100B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110665089A (en) * | 2019-09-20 | 2020-01-10 | 浙江师范大学 | Electrostatic peristaltic pump for blood conveying |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4344743A (en) * | 1979-12-04 | 1982-08-17 | Bessman Samuel P | Piezoelectric driven diaphragm micro-pump |
| CN1304324A (en) * | 1998-01-16 | 2001-07-18 | 坦德姆医疗公司 | Medication delivery apparatus |
| CN2673410Y (en) * | 2004-02-14 | 2005-01-26 | 王新明 | External wound serious patient fast pressurized transfusion device |
| CN1807887A (en) * | 2006-01-27 | 2006-07-26 | 吉林大学 | Integrated precise medicine transportation pump |
| CN102678528A (en) * | 2012-05-23 | 2012-09-19 | 浙江师范大学 | Series-parallel hybrid-driven piezoelectric pump |
| CN102762242A (en) * | 2010-02-12 | 2012-10-31 | 生物技术公司 | Micromechanic passive flow regulator |
| CN102979707A (en) * | 2012-12-06 | 2013-03-20 | 浙江师范大学 | Self-measurement piezoelectric stack pump |
| CN203564606U (en) * | 2013-12-03 | 2014-04-30 | 吉林大学 | Portable piezoelectric driving insulin pump |
| CN104936638A (en) * | 2012-11-30 | 2015-09-23 | 欧文蒙福德有限公司 | Display arrangements |
| KR20160104404A (en) * | 2015-02-26 | 2016-09-05 | 연세대학교 원주산학협력단 | Syringe adaptor |
| CN108175904A (en) * | 2018-01-31 | 2018-06-19 | 王桂娟 | A kind of intelligent transfusion ancillary equipment and control system |
-
2019
- 2019-03-01 CN CN201910191214.4A patent/CN109821100B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4344743A (en) * | 1979-12-04 | 1982-08-17 | Bessman Samuel P | Piezoelectric driven diaphragm micro-pump |
| CN1304324A (en) * | 1998-01-16 | 2001-07-18 | 坦德姆医疗公司 | Medication delivery apparatus |
| CN2673410Y (en) * | 2004-02-14 | 2005-01-26 | 王新明 | External wound serious patient fast pressurized transfusion device |
| CN1807887A (en) * | 2006-01-27 | 2006-07-26 | 吉林大学 | Integrated precise medicine transportation pump |
| CN102762242A (en) * | 2010-02-12 | 2012-10-31 | 生物技术公司 | Micromechanic passive flow regulator |
| CN102678528A (en) * | 2012-05-23 | 2012-09-19 | 浙江师范大学 | Series-parallel hybrid-driven piezoelectric pump |
| CN104936638A (en) * | 2012-11-30 | 2015-09-23 | 欧文蒙福德有限公司 | Display arrangements |
| CN102979707A (en) * | 2012-12-06 | 2013-03-20 | 浙江师范大学 | Self-measurement piezoelectric stack pump |
| CN203564606U (en) * | 2013-12-03 | 2014-04-30 | 吉林大学 | Portable piezoelectric driving insulin pump |
| KR20160104404A (en) * | 2015-02-26 | 2016-09-05 | 연세대학교 원주산학협력단 | Syringe adaptor |
| CN108175904A (en) * | 2018-01-31 | 2018-06-19 | 王桂娟 | A kind of intelligent transfusion ancillary equipment and control system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110665089A (en) * | 2019-09-20 | 2020-01-10 | 浙江师范大学 | Electrostatic peristaltic pump for blood conveying |
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| Publication number | Publication date |
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| CN109821100B (en) | 2021-04-30 |
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