CN109763966A - A kind of indirect type medicine delivery pump for cavity Piezoelectric Driving of connecting - Google Patents
A kind of indirect type medicine delivery pump for cavity Piezoelectric Driving of connecting Download PDFInfo
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- CN109763966A CN109763966A CN201910186900.2A CN201910186900A CN109763966A CN 109763966 A CN109763966 A CN 109763966A CN 201910186900 A CN201910186900 A CN 201910186900A CN 109763966 A CN109763966 A CN 109763966A
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- piezoelectric vibrator
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- pump chamber
- piezoelectric
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Abstract
The invention belongs to medicine delivery pump fields, more particularly to a kind of indirect type medicine delivery pump of cavity Piezoelectric Driving of connecting, including pump case, pump case is internally provided with lid, the left pump housing, intermediate, the right pump housing and end cap and is sequentially connected, end cap is mounted on pump case, flexible pocket is mounted on lid, and liquid medium is provided in flexible pocket；First pump chamber is made of the first piezoelectric vibrator and the left pump housing, and the second pump chamber is made of the second piezoelectric vibrator and the left pump housing, and third pump chamber is made of third piezoelectric vibrator and the right pump housing, and three cavitys are tandem；Flexible diaphragm is close to installation with drug storage capsule, conveys liquid medium in flexible pocket by series connection cavity Piezoelectric Driving and squeezes flexible diaphragm and medicament reservoir, realizes the conveying of drug indirectly；Medicament reservoir is disposable replacement component, by the setting of shut-off valve between access road and exit passageway, it can be achieved that the quick-replaceable of medicament reservoir.Characteristic and advantage: utilization ratio of drug is high；It is easy to maintain；Output pressure is big.
Description
Technical field
The invention belongs to medicine delivery pump fields, and in particular to a kind of indirect type drug conveying for cavity Piezoelectric Driving of connecting
Pump.
Background technique
Piezoelectric pump has many advantages, such as that structure is simple, small in size, low in energy consumption, control is accurate and without electromagnetic interference, accurate
Field of drug delivery is with a wide range of applications, and receives giving more sustained attention for researchers at home and abroad.People are promoting piezoelectricity
Output performance, stability and the applicability aspect of medicine delivery pump have been achieved for significantly being in progress, such as Chinese invention patent
Number be CN1807887 " integrated precise medicine transportation pump ", using multiple pressure electric tachometer indicator mode constitute membrane pump carry out drug it is defeated
It send, improves the output pressure and flow of medicine delivery pump；Chinese utility model patent number is the " a kind of humorous of CN204402805U
Vibration shape piezoelectricity membrane pump ", drug conveying is carried out using piezoelectric resonant effect, compact-sized and fan-out capability is strong.But existing piezoelectricity
Medicine delivery pump mostly uses direct loading mode (drug directly passes through pump chamber), has the disadvantage in that 1) utilization ratio of drug is low:
Drug can remain in pump chamber, substantially reduce the utilization rate of drug；2) maintenance difficulties are big: in drug replacement process, pump chamber and stream
Road will pass through stringent cleaning and sterilized maintenance, this is avoided the cross contamination of drug, and maintenance difficulties are big；3) replacement cost is high: one
After secondary property use, the Piezoelectric Driving part in piezoelectric pump is abandoned, it is at high cost and be also easy to produce environmental pollution.
Summary of the invention
Aiming at the problem that existing Piezoelectric Driving medicine delivery pump, the present invention proposes a kind of the indirect of cavity Piezoelectric Driving of connecting
Formula medicine delivery pump, hereinafter referred to as medicine delivery pump.
The technical solution adopted by the present invention is that: as shown in Figure 1, 2, 3, end cap is mounted on pump case by screw, in pump case
Portion is provided with lid, the left pump housing, intermediate, the right pump housing and end cap and is sequentially connected, and flexible pocket is mounted on lid；Drug storage
Device is detachable part, including drug storage capsule and matrix, and drug storage capsule is made of elastic material, drug storage capsule edge with
Matrix is connected, and medicament reservoir and medicine outlet are provided on matrix；The medicament reservoir is connected with the right pump housing；The lid
The first piezoelectric vibrator, second are separately installed between the left pump housing, between the left pump housing and intermediate, between intermediate and the right pump housing
Piezoelectric vibrator, third piezoelectric vibrator, the first piezoelectric vibrator, the second piezoelectric vibrator, third piezoelectric vibrator are by metal substrate and pressure
Electroceramics chip is bonded with one heart, and the diameter of piezoelectric ceramic wafer is less than metal substrate, the first piezoelectric vibrator, the second piezoelectricity
The metal substrate edge of oscillator is connected with the left pump housing, and the metal substrate edge of third piezoelectric vibrator is connected with the right pump housing；The left side
The pump housing is being provided with the first pump chamber towards the first piezoelectric vibrator side, and the first pump chamber is made of the first piezoelectric vibrator and the left pump housing,
The left pump housing is provided with the first check valve and second one-way valve；The left pump housing is being provided with second towards the second piezoelectric vibrator side
Pump chamber, the second pump chamber are made of the second piezoelectric vibrator and the left pump housing；The right pump housing is arranged towards third piezoelectric vibrator side
There is third pump chamber, third pump chamber is made of third piezoelectric vibrator and the right pump housing, and third check valve and the 4th are provided on the right pump housing
Check valve；First check valve controls the one-way flow of intake channel toward the first pump chamber, and second one-way valve controls the first pump chamber
Toward the one-way flow of the second pump chamber, third check valve controls one-way flow of second pump chamber toward third pump chamber, the 4th check valve control
One-way flow of the third pump chamber processed toward exit passageway；Second pump chamber is connected with third pump chamber by intermediate channel；It is described into
Mouthful one end of the channel is connected to liquid medium in flexible pocket, and the other end is divided into two branches, and a branch connect with the first pump chamber, a branch
It is connected to shut-off valve；Described exit passageway one end is connect with third pump chamber, and the other end is divided into two branches, a branch and flexible diaphragm
Connection, a branch are connected to shut-off valve；The on-off of shut-off valve the control access road and exit passageway, during loading,
Shut-off valve is in off state, i.e., during loading, intake channel is not connected to exit passageway；The flexible diaphragm edge and right pump
Body is connected, and flexible diaphragm is close to installation with drug storage capsule.
A kind of preferable working condition can be divided into original state, the first working condition, the second working condition, original state: cut
Only valve is closed, and the first piezoelectric vibrator, the second piezoelectric vibrator, third piezoelectric vibrator are in constant shape state；First working condition: the
One piezoelectric vibrator, third piezoelectric vibrator apply the voltage opposite with piezoelectric ceramic wafer polarization direction, and the second piezoelectric vibrator applies
Voltage identical with piezoelectric ceramic wafer polarization direction, the first piezoelectric vibrator, third piezoelectric vibrator are pressed to pump chamber outside sweep, second
Electric tachometer indicator is bent into pump chamber, and the first pump chamber, third pump chamber increase, and the second pump chamber reduces, the pressure in pump chamber
Under effect, the first check valve, third check valve are opened, second one-way valve, the 4th closed check valve, in flexible pocket liquid medium into
Enter that the first pump chamber, liquid medium enters third pump chamber in the second pump chamber；Second working condition: the first piezoelectric vibrator, third piezoelectricity
Oscillator applies voltage identical with piezoelectric ceramic wafer polarization direction, and the second piezoelectric vibrator applies and piezoelectric ceramic wafer polarization side
To opposite voltage, the first piezoelectric vibrator, third piezoelectric vibrator are bent into pump chamber, the second piezoelectric vibrator to pump chamber outside sweep,
First pump chamber, third pump chamber reduce, and the second pump chamber increases, under the effect of pressure in pump chamber, the first check valve, the
Three closed check valves, second one-way valve, the 4th check valve are opened, and liquid medium enters the second pump chamber in the first pump chamber, third pumps
The discharge of intracavity liquid medium, squeezes flexible diaphragm and medicament reservoir, drug start to export；Under the driving of alternating voltage signal,
First, second working condition is repeated in the continuous injection of achievable drug.After drug is used up in medicament reservoir, drug storage
Storage disposable integral replacing during integral replacing, shut-off valve is opened, exit passageway is connected to intake channel, is being squeezed
It acts on lower liquid medium to return in flexible pocket, after the installation is completed, shut-off valve be closed, medicine delivery pump returns original state.
Characteristic and advantage of the invention is: 1. utilization ratio of drug is high: use indirect type drug delivery methods, drug without
Pump chamber is crossed, is not in the case where drug is detained in pump chamber, drug is fully utilized；2. easy to maintain: being stored in drug
After drug is used up in device, cooperate shut-off valve (normally closed), (disposable) to drug storage container can integrally replace, without to pump
Chamber and runner carry out other processing, and user is easy to maintain；3. output pressure is big: it is driven by series connection cavity piezoelectric vibrator, therefore can
Obtain high pressure output.
Detailed description of the invention
Fig. 1 is the structure and its diagrammatic cross-section of medicine delivery pump in a kind of preferred embodiment of the present invention；
Fig. 2 is the first working state schematic representation of medicine delivery pump in a kind of preferred embodiment of the present invention；
Fig. 3 is the second working state schematic representation of medicine delivery pump in a kind of preferred embodiment of the present invention；
Icon: 1- flexible pocket；2- pump case；The first piezoelectric vibrator of 31-；The second piezoelectric vibrator of 32-；33- third piezoelectric vibrator；
300- piezoelectric ceramic wafer；301- metal substrate；4- second one-way valve；The 4th check valve of 5-；6- exit passageway；7- flexibility every
Film；8- end cap；9- medicament reservoir；91- flexibility drug capsule；92- matrix；920- drug storage chamber；921- medicine outlet；10-
The right pump housing；11- shut-off valve；12- third check valve；The 4th pump chamber of 13-；14- intermediate channel；15- intermediate；The second pump chamber of 16-；
The left pump housing of 17-；18- intake channel；The first check valve of 19-；The first pump chamber of 20-；21- lid.
Specific embodiment
Clear, complete description is carried out to technical solution of the present invention below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiment of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, belongs to protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integration connection；It can
To be mechanical connection, it is also possible to be electrically connected；It can be and be directly connected to, can also be indirectly connected with, be can be by intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood in this hair with concrete condition
Concrete meaning in bright.
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
Fig. 1, Fig. 2, Fig. 3 are please referred to, the medicine delivery pump implemented below in conjunction with attached drawing to the present invention elaborates.
End cap 8 is mounted on pump case 2 by screw, and pump case 2 is internally provided with lid 21, the left pump housing 17, intermediate 15, the right side
It the pump housing 10 and end cap 8 and is sequentially connected, flexible pocket 1 is mounted on lid 21；Medicament reservoir 9 is detachable part, including medicine
Object storage capsule 91 and matrix 92, drug storage capsule 91 are made of elastic material, and 91 edge of drug storage capsule is connected with matrix 92, base
Medicament reservoir 920 and medicine outlet 921 are provided on body 92；The medicament reservoir 9 is connected with the right pump housing 10；The lid
First is separately installed between 21 and the left pump housing 17, between the left pump housing 17 and intermediate 15, between intermediate 15 and the right pump housing 10
Piezoelectric vibrator 31, the second piezoelectric vibrator 32, third piezoelectric vibrator 33, the first piezoelectric vibrator 31, the second piezoelectric vibrator 32, third pressure
Electric tachometer indicator 33 is bonded with one heart by metal substrate 301 and piezoelectric ceramic wafer 300, and the diameter of piezoelectric ceramic wafer 300
Less than metal substrate 301, the first piezoelectric vibrator 31, the second piezoelectric vibrator 32 301 edge of metal substrate be connected with the left pump housing 17,
301 edge of metal substrate of third piezoelectric vibrator 33 is connected with the right pump housing 10；The left pump housing 17 is in the first piezoelectric vibrator of direction
31 sides are provided with the first pump chamber 20, and the first pump chamber 20 is made of the first piezoelectric vibrator 31 and the left pump housing 17, and the left pump housing 17 is arranged
There are the first check valve 19 and second one-way valve 4；The left pump housing 17 is being provided with the second pump towards 32 side of the second piezoelectric vibrator
Chamber 16, the second pump chamber 16 are made of the second piezoelectric vibrator 32 and the left pump housing 17；The right pump housing 10 is towards third piezoelectric vibrator
33 sides are provided with third pump chamber 13, and third pump chamber 13 is made of third piezoelectric vibrator 33 and the right pump housing 10, set on the right pump housing 10
It is equipped with third check valve 12 and the 4th check valve 5；First check valve 19 controls intake channel 18 toward the list of the first pump chamber 20
To circulation, second one-way valve 4 controls the one-way flow of the first pump chamber 20 toward the second pump chamber 16, the second pump of control of third check valve 12
One-way flow of the chamber 16 toward third pump chamber 13, one-way flow of the 4th check valve 5 control third pump chamber 13 toward exit passageway 6；Institute
It states the second pump chamber 16 and is connected with third pump chamber 12 by intermediate channel 14；Liquid in described 18 one end of intake channel and flexible pocket 1
Medium connection, the other end are divided into two branches, and a branch connect with the first pump chamber 20, a branch is connected to shut-off valve 11；It is described go out
Mouthful 6 one end of channel connect with third pump chamber 13, and the other end is divided into two branches, a branch is connected to flexible diaphragm 7, a branch and section
Only valve 11 is connected to；The shut-off valve 11 controls the on-off of access road 18 and exit passageway 6, during loading, shut-off valve 11
It is in off state, i.e., access road 18 is not connected to exit passageway 6；7 edge of flexible diaphragm is connected with the right pump housing 10, flexible
Diaphragm 7 is close to installation with drug storage capsule 91.
The concrete operating principle of the present embodiment, is described below:
A kind of preferable working condition can be divided into original state, the first working condition, the second working condition, original state: cut
Only valve 11 is closed, and the first piezoelectric vibrator 31, the second piezoelectric vibrator 32, third piezoelectric vibrator 33 are in constant shape state；First work
Make state: the first piezoelectric vibrator 31, third piezoelectric vibrator 33 apply the voltage opposite with 300 polarization direction of piezoelectric ceramic wafer,
Second piezoelectric vibrator 32 applies voltage identical with 300 polarization direction of piezoelectric ceramic wafer, the first piezoelectric vibrator 31, third piezoelectricity
Oscillator 33 is bent to pump chamber outside sweep, the second piezoelectric vibrator 32 into pump chamber, and the first pump chamber 20,13 volume of third pump chamber increase,
Second pump chamber, 16 volume reduces, and under the pressure effect in pump chamber, the first check valve 19, third check valve 12 are opened, and second is single
Closed to valve 4, the 4th check valve 5, in flexible pocket 1 liquid medium enter the first pump chamber 20, in the second pump chamber 16 liquid medium into
Enter third pump chamber 13；Second working condition: the first piezoelectric vibrator 31, third piezoelectric vibrator 33 apply and piezoelectric ceramic wafer 300
The identical voltage of polarization direction, the second piezoelectric vibrator 32 application voltage opposite with 300 polarization direction of piezoelectric ceramic wafer, first
Piezoelectric vibrator 31, third piezoelectric vibrator 33 are bent into pump chamber, the second piezoelectric vibrator 32 to pump chamber outside sweep, the first pump chamber 20,
13 volume of third pump chamber reduces, and 16 volume of the second pump chamber increases, under the pressure effect in pump chamber, the first check valve 19, third
Check valve 12 is closed, and second one-way valve 4, the 4th check valve 5 are opened, in the first pump chamber 20 liquid medium enter the second pump chamber 16,
Liquid medium is discharged in third pump chamber 13, squeezes flexible diaphragm 7 and medicament reservoir 9, drug start to export；Believe in alternating voltage
Number driving under, the first, second working condition is repeated in the continuous injection of achievable drug.Drug is used in medicament reservoir 9
After to the greatest extent, during integral replacing, shut-off valve 11 is opened for medicament reservoir disposable integral replacing, and exit passageway 6 and import are logical
Road 18 is connected to, and liquid medium is returned in flexible pocket 1 under squeezing action, and after the installation is completed, shut-off valve 11 is closed, drug conveying
Pump returns original state.
Claims (2)
1. a kind of indirect type medicine delivery pump for cavity Piezoelectric Driving of connecting, it is characterised in that: end cap is mounted on pump by screw
On shell, pump case is internally provided with lid, the left pump housing, intermediate, the right pump housing and end cap and is sequentially connected, and flexible pocket is mounted on lid
On；Medicament reservoir is detachable part, including drug storage capsule and matrix, and drug storage capsule is made of elastic material, drug
Storage capsule edge is connected with matrix, and medicament reservoir and medicine outlet are provided on matrix；The medicament reservoir and the right pump housing
It is connected；First is separately installed between the lid and the left pump housing, between the left pump housing and intermediate, between intermediate and the right pump housing
Piezoelectric vibrator, the second piezoelectric vibrator, third piezoelectric vibrator；First piezoelectric vibrator, the second piezoelectric vibrator, third piezoelectric vibrator
It is bonded with one heart by metal substrate and piezoelectric ceramic wafer, and the diameter of piezoelectric ceramic wafer is less than metal substrate；It is described
First piezoelectric vibrator, the second piezoelectric vibrator metal substrate edge be connected with the left pump housing, the Metal Substrate edges of boards of third piezoelectric vibrator
Edge is connected with the right pump housing；The left pump housing is being provided with the first pump chamber towards the first piezoelectric vibrator side, and the left pump housing is provided with the
One check valve and second one-way valve；The left pump housing is being provided with the second pump chamber towards the second piezoelectric vibrator side；The right pump
Body is being provided with third pump chamber towards third piezoelectric vibrator side, and third check valve and the 4th check valve are provided on the right pump housing；
Described intake channel one end is connected to liquid medium in flexible pocket, and the other end is divided into two branches, a branch connect with the first pump chamber,
One branch is connected to shut-off valve；Described exit passageway one end is connect with third pump chamber, and the other end is divided into two branches, a branch with it is soft
Property diaphragm connection, a branch is connected to shut-off valve；The on-off of shut-off valve the control access road and exit passageway, in loading mistake
Cheng Zhong, shut-off valve are in off state；The flexible diaphragm edge is connected with the right pump housing, and flexible diaphragm is close to peace with drug storage capsule
Dress.
2. the indirect type medicine delivery pump of series connection cavity Piezoelectric Driving according to claim 1, it is characterised in that: drug storage
Storage is disposable integral replacing component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910186900.2A CN109763966A (en) | 2019-03-03 | 2019-03-03 | A kind of indirect type medicine delivery pump for cavity Piezoelectric Driving of connecting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910186900.2A CN109763966A (en) | 2019-03-03 | 2019-03-03 | A kind of indirect type medicine delivery pump for cavity Piezoelectric Driving of connecting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109763966A true CN109763966A (en) | 2019-05-17 |
Family
ID=66458879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910186900.2A Pending CN109763966A (en) | 2019-03-03 | 2019-03-03 | A kind of indirect type medicine delivery pump for cavity Piezoelectric Driving of connecting |
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| CN (1) | CN109763966A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4443218A (en) * | 1982-09-09 | 1984-04-17 | Infusaid Corporation | Programmable implantable infusate pump |
| US4634430A (en) * | 1984-03-07 | 1987-01-06 | Fresenius Ag | Pump arrangement for medical purposes |
| DE3634725A1 (en) * | 1986-10-11 | 1988-04-14 | Holzer Walter | Dosing pump, e.g. for insulin |
| US20050245889A1 (en) * | 2002-08-28 | 2005-11-03 | Juergen Haecker | Disposable cassette |
| CN1807887A (en) * | 2006-01-27 | 2006-07-26 | 吉林大学 | Integrated precise medicine transportation pump |
| CN201416529Y (en) * | 2009-05-20 | 2010-03-03 | 泰安凯瑞特包装材料有限公司 | Pneumatic-hydraulic membrane pump for pharmacy |
| CN103573593A (en) * | 2013-11-01 | 2014-02-12 | 刘勇 | Piezoelectric flexible diaphragm pump |
| CN207004770U (en) * | 2017-04-25 | 2018-02-13 | 刘勇 | A kind of minisize fluid conveying device based on piezoelectricity air pump |
-
2019
- 2019-03-03 CN CN201910186900.2A patent/CN109763966A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4443218A (en) * | 1982-09-09 | 1984-04-17 | Infusaid Corporation | Programmable implantable infusate pump |
| US4634430A (en) * | 1984-03-07 | 1987-01-06 | Fresenius Ag | Pump arrangement for medical purposes |
| DE3634725A1 (en) * | 1986-10-11 | 1988-04-14 | Holzer Walter | Dosing pump, e.g. for insulin |
| US20050245889A1 (en) * | 2002-08-28 | 2005-11-03 | Juergen Haecker | Disposable cassette |
| CN1807887A (en) * | 2006-01-27 | 2006-07-26 | 吉林大学 | Integrated precise medicine transportation pump |
| CN201416529Y (en) * | 2009-05-20 | 2010-03-03 | 泰安凯瑞特包装材料有限公司 | Pneumatic-hydraulic membrane pump for pharmacy |
| CN103573593A (en) * | 2013-11-01 | 2014-02-12 | 刘勇 | Piezoelectric flexible diaphragm pump |
| CN207004770U (en) * | 2017-04-25 | 2018-02-13 | 刘勇 | A kind of minisize fluid conveying device based on piezoelectricity air pump |
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