CN109821099A - A kind of inflation extruding infusion set - Google Patents
A kind of inflation extruding infusion set Download PDFInfo
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- CN109821099A CN109821099A CN201910191213.XA CN201910191213A CN109821099A CN 109821099 A CN109821099 A CN 109821099A CN 201910191213 A CN201910191213 A CN 201910191213A CN 109821099 A CN109821099 A CN 109821099A
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Abstract
The present invention relates to a kind of inflation extruding infusion sets, belong to medical instruments field.Main body, which is equipped with, above to be entered hole, takes the boss of outlet plenum and the rotary table group of at least two from left to right contained rotary table quantity successively reductions；Main body blister cavities is provided with air bag and anther sac, and syringe needle and flow valve are housed on anther sac perfusion tube；Pedestal is equipped with the body cavity group of tripping in hole, the vestibule of leukorrhagia outlet plenum, the air storage chamber being connected to lower outlet plenum and body cavity composition；Disengaging oral cavity and valve block constitute terminal valve up and down up and down；Main body is on pedestal, it is intracavitary that partition is crimped on hole by boss, piezoelectric actuator is crimped in body cavity and respectively constitutes compression chamber up and down with main body and pedestal by the sealed circle of rotary table, compression chamber up and down in same body cavity group respectively and is unified into compression chamber group, upper and lower compression chamber group up and down and is connected into compression unit up and down parallel with one another；Upper access hole respectively through simultaneously, series valve be connected to air storage chamber, above enter Kong Jing equipped with intake valve, above portal and be connected to through delivery valve with the air bag with vent valve.
Description
Technical field
The invention belongs to medical instruments fields, and in particular to a kind of inflation extruding infusion set.
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 a kind of inflation extruding infusion set, and embodiment of the present invention is: bottom part body is equipped with above to enter
Hole, take outlet plenum and on the boss that portals and the rotary table group of at least two from left to right contained rotary table quantity successively reductions,
One rotary table of each rotary table group is equipped with enterprising oral cavity and upper venthole, only sets upper vent hole on other rotary tables；Leftmost side rotary table
Enterprising oral cavity in group with above enter hole and be connected to, the upper venthole in the rotary table group of the rightmost side is connected to through upper outlet chamber with above portalling；Together
Upper venthole in one rotary table group is connected to upper vent hole through upper intercommunicating pore, enterprising oral cavity in two or so adjacent rotary table groups and upper
Venthole connection；The blister cavities of body top is provided with air bag and anther sac, and blister cavities end is equipped with baffle, and baffle is placed in blister cavities side wall
In sliding slot, syringe needle and flow valve are housed on the perfusion tube of anther sac；Pedestal is equipped with tripping in hole, the vestibule of leukorrhagia outlet plenum, under
Portal with the air storage chamber of lower outlet plenum connection and distinguish equal body cavity group and body cavity with rotary table group and its contained rotary table quantity,
Air storage chamber is equipped with left and right through-hole；A body cavity in each body cavity group is equipped with lower inlet chamber and lower production well, on other body cavitys
It is provided only with lower venthole；Lower inlet chamber in the body cavity group of the leftmost side is connected to tripping in hole, the lower production well of rightmost side body cavity group with
Lower outlet plenum connection；Lower production well in same body cavity group is connected to lower venthole through lower intercommunicating pore, other two or so adjacent bodies
Lower inlet chamber in chamber group is connected to lower production well；Disengaging oral cavity and the valve block installed in it respectively constitute inlet and outlet up and down up and down
Valve, valve block are cantilever valve or disc structure；For main body through screw on pedestal, partition is crimped on vestibule through O-ring by boss
It is interior and separate upper and lower outlet plenum；Driver is crimped in body cavity by the sealed circle of rotary table, and sealing ring is located at driver or more two
Side, driver are made of the washer of two piezoelectric vibrators and its intermediate crimping, and piezoelectric vibrator is formed by substrate and piezoelectric piece bonding,
Piezoelectric patches is installed close to washer；Bending deformation direction when two piezoelectric vibrators are acted on by voltage in driver is identical and represents drive
The deformation direction of dynamic device；Driver and sealing ring and main body and pedestal respectively constitute compression chamber up and down, upper in same body cavity group
Lower compression chamber respectively and is unified into compression chamber group up and down, and upper and lower compression chamber group is connected into compression unit up and down respectively, and compression is single up and down
It is first in parallel；On enter hole by the road, series valve and left through-hole be connected to air storage chamber, above enter hole and intake valve be housed by the road；On portal
By the road, parallel valve and right through-hole are connected to air storage chamber, above portal by the road and delivery valve is connected to air bag, and air bag is also by the road
Vent valve is installed, series valve, intake valve, parallel valve, delivery valve and vent valve are switch valve；In work, same body cavity group
The deformation direction of inner driver is identical, and the deformation direction of driver is opposite in two adjacent body cavity groups；Upper and lower compression unit is right respectively
Gas accumulate step by step after compression alternately from discharge of portalling up and down.
For having the infusion device there are three upper and lower compression chamber group, from right to left, rotary table group is successively defined as rotary table group
One, two and three, body cavity group is successively defined as body cavity group one, two and three, and upper inlet valve is successively defined as upper inlet valve one, two and
Three, lower inlet valve is successively defined as lower inlet valve one, two and three, and upper compression chamber group is successively defined as compression chamber group one, two and
Three, lower compression chamber group is successively defined as lower compression chamber group one, two and three, then specific work process are as follows: in upper half, body cavity group one
Be bent downwardly with the driver in three, the driver in body cavity group two is bent upwards, upper inlet valve one and three, lower inlet valve two and
Lower outlet valve is opened, and upper inlet valve two, upper outlet valve and lower inlet valve one and three are closed, upper compression chamber group one and three, lower compression
Chamber two sucks gas, and gas is discharged in upper compression chamber group two, lower compression chamber one and three, this is to be drained through journey under upper suction；In lower half, body
Driver in chamber group one and three is bent upwards, the driver in body cavity group two is bent downwardly, upper inlet valve one and three, lower inlet
Valve two and lower outlet valve are closed, and upper inlet valve two, upper outlet valve and lower inlet valve one and three are opened, upper compression chamber group one and three,
Gas is discharged in lower compression chamber two, and upper compression chamber group two, lower compression chamber one and three suck gas, this is to be drawn through journey under upper row；It is above-mentioned
In the course of work, gas undergoes the accumulation step by step of upper compression chamber group three, two and one or lower compression chamber group three, two and one to hand over after compressing
Alternately portal discharge from up or down；When series valve and vent valve closing, intake valve and parallel valve and delivery valve are opened, compress up and down
Unit parallel output, flow are big, the occasion suitable for low viscosity medical fluid high speed infusion；Intake valve and parallel valve and vent valve close,
When series valve and delivery valve are opened, upper and lower compression unit series connection connection output, pressure are high, suitable for the infusion of big viscosity medical fluid high pressure
Occasion；When upper and lower compression unit series connection output, it is first shut off series valve and delivery valve, opens intake valve and parallel valve, make up and down
Compression unit elder generation parallel output changes the state of related switch valve again after gas storage room pressure rises cause setting value, makes pushing
The series connection output of contracting unit；The gas of step by step compression increases bag volume after entering air bag and squeezes anther sac, and anther sac internal pressure increases
Medical fluid is forced to export through perfusion tube, driving voltage or flow valve regulation of the output flow by piezoelectric vibrator；It is opened after infusion
Open gas, the replacement anther sac in vent valve releasing air bag.
In the present invention, the quantity of compression chamber group contained by upper and lower compression unit is equal, contained in the same body cavity group up and down
The quantity of compression chamber is equal, and height and the radius difference of upper and lower compression chamber are equal；The pressure of compression unit series connection output is up and down
2 times of the pressure of parallel output, the pressure of parallel output are equal to output pressure when upper compression unit works independently, maximum value
For Pmax=P0ηp{(1+α)/(1-α)[β+(1+α)/(1-α)]n-1- 1 }, in which: P0For standard atmospheric pressure, ηpFor efficiency factor, α
> 0 is the ratio between volume variable quantity and volume of upper compression chamber of the caused upper compression chamber of compression ratio, i.e. piezoelectric vibrator deformation, β > 1
For the minimum value of upper compression chamber ratio of number contained by each adjacent upper compression chamber group, n >=2 are upper compression chamber group contained by upper compression unit
Quantity；It is more containing upper compression chamber quantity when two adjacent upper compression chamber groups are interconnected, valve block i.e. therebetween is opened in work
Upper compression chamber group volume variable quantity be not less than the upper compression chamber group containing upper compression chamber negligible amounts volume variable quantity；To obtain
Maximum compression ratio is obtained, the height of upper compression chamber is equal to the deflection of piezoelectric vibrator central point, and piezoelectric vibrator is brilliant by equal thickness PZT4
The height of upper compression chamber is when piece is formed with brass substrate bondingηh、U0Respectively dynamic corrections system
Several and driving voltage, d31For piezoelectric constant, hpFor piezoelectric patches thickness, r is upper compression chamber radius.
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 composition diagrammatic cross-section of infusion device in a preferred embodiment of the present invention；
Fig. 2 is the A-A cross-sectional view of Fig. 1；
Fig. 3 is the structural schematic diagram of main body in a preferred embodiment of the present invention；
Fig. 4 is the bottom view of Fig. 3；
Fig. 5 is the structural schematic diagram of pedestal in a preferred embodiment of the present invention；
Fig. 6 is the top view of Fig. 6；
Fig. 7 is the structural schematic diagram of driver in a preferred embodiment of the present invention；
Fig. 8 is structural schematic diagram when infusion device works in a preferred embodiment of the present invention.
Specific embodiment
The bottom of main body a be equipped with above enter hole a1, take outlet plenum a6 and on portal a0 boss a3 and at least two by justifying
The rotary table group Ai that platform a2 is constituted, from left to right the quantity of rotary table a2 contained by each rotary table group Ai is successively reduced；The one of each rotary table group Ai
A rotary table a2 is equipped with enterprising oral cavity a4 and upper venthole a5, is provided only with upper vent hole a8 on other rotary table a2；Leftmost side rotary table
Group Ai in enterprising oral cavity a4 be connected to hole a1 is above entered, the upper venthole a5 in the rotary table group Ai of the rightmost side through upper outlet chamber a6 with it is upper
The a0 that portals connection；Upper venthole a5 in same rotary table group Ai is connected to upper vent hole a8 through upper intercommunicating pore a7, and two or so is adjacent
Enterprising oral cavity a4 in rotary table group Ai is connected to upper venthole a5；Enterprising oral cavity a4 and upper outlet chamber a6 and the valve block installed in it
It is cantilever valve or disc structure that e, which respectively constitutes upper inlet valve vi and upper outlet valve v, valve block e,；In blister cavities a9 at the top of main body a
Equipped with air bag x1 and anther sac x2, the end of blister cavities a9 is equipped with baffle j, and baffle j is placed in the sliding slot a10 of blister cavities a9 side wall, anther sac
Syringe needle and flow valve m are housed on the perfusion tube q of x2；Pedestal b is equipped with tripping in hole b1, the vestibule b3 of leukorrhagia outlet plenum b6, under
The b0 that portals with the lower outlet plenum b6 air storage chamber b9 being connected to and with rotary table group Ai and its contained rotary table a2 quantity distinguishes equal body
Chamber group Bi and body cavity b2, air storage chamber b9 are equipped with left through-hole b10 and right through-hole b11；On a body cavity b2 in each body cavity group Bi
Equipped with being provided only with lower venthole b8 on lower inlet chamber b4 and lower production well b5, other body cavity b2；Under in the body cavity group Bi of the leftmost side
Snout cavity b4 is connected to tripping in hole b1, and the lower production well b5 of rightmost side body cavity group Bi is connected to lower outlet plenum b6；Same body cavity group
Lower production well b5 in Bi is connected to lower venthole b8 through lower intercommunicating pore b7, the lower inlet in other two or so adjacent body cavity group Bi
Chamber b4 is connected to lower production well b5；Lower inlet chamber b4 and lower outlet plenum b6 and the valve block e filled in it respectively constitute lower inlet valve
Vi and lower outlet valve V；Through screw on pedestal b, partition p is crimped in vestibule b3 through O-ring and will be upper main body a by boss a3
Outlet plenum a6 is separated with lower outlet plenum b6；Driver D is crimped in body cavity b2 by the sealed circle of rotary table a2, and sealing ring is located at driving
The two sides device D or more, driver D are made of the washer d ' of two piezoelectric vibrator d and its intermediate crimping, and piezoelectric vibrator d is by substrate d1
It is bonded with piezoelectric patches d2, piezoelectric patches d2 is installed close to washer d ', and the surface of piezoelectric vibrator d is coated with insulated paint or is bonded with absolutely
Edge film；Bending deformation direction when two piezoelectric vibrator d are acted on by voltage in driver D is identical and represents the change of driver D
Shape direction；Driver D and sealing ring and main body a and pedestal b respectively constitute compression chamber c and lower compression chamber C, same body cavity group Bi
Interior upper compression chamber c is simultaneously unified into compression chamber group ci, lower compression chamber C and is unified into pushing contracting chamber group Ci, upper compression chamber group ci series connection
It is connected into lower compression unit at upper compression unit, lower compression chamber group Ci, upper and lower compression unit is in parallel；On enter hole a1 by the road, string
Connection valve z1 and left through-hole b10 is connected to air storage chamber b9, is above entered hole a1 and is equipped with intake valve z2 by the road；On portal a0 by the road,
Parallel valve y1 and right through-hole b11 are connected to air storage chamber b9, above portal a0 by the road and delivery valve y2 is connected to air bag x1, air bag x1
Vent valve y3 is also installed by the road, series valve z1, intake valve z2, parallel valve y1, delivery valve y2 and vent valve y3 are switch
Valve；In work, the deformation direction of same body cavity group Bi inner driver D is identical, the deformation side of driver D in two adjacent body cavity group Bi
To opposite；Upper and lower compression unit respectively to gas alternately portal from above after accumulation compression step by step a0 or under portal b0 row
Out.
In the present invention, rotary table group Ai, body cavity group Bi, upper inlet valve vi, lower inlet valve Vi, upper compression chamber group ci, lower compression
The serial number of i representative from right to left in chamber group Ci, i=1,2,3 ...；The n of appendix in represents serial number, n=1, and 2；To have
For the infusion device of three upper compression chamber group ci and three lower compression chamber group Ci, from right to left, rotary table group Ai is successively defined as
One A1 of rotary table group, two A2 and three A3, body cavity group Bi are successively defined as one B1 of body cavity group, two B2 and three B3, and upper inlet valve vi is successively
One v1 of upper inlet valve, two v2 and three v3 are defined as, lower inlet valve Vi is successively defined as one V1 of lower inlet valve, two V2 and three V3, on
Compression chamber group ci is successively defined as one c1 of compression chamber group, two c2 and three c3, and lower compression chamber group Ci is successively defined as lower compression chamber
A C1, two C2 and three C3 are organized, then specific work process are as follows: in upper half, the driver D in body cavity group one B1 and three B3 is turned under
Driver D bent, in two B2 of body cavity group is bent upwards, and upper inlet valve one v1 and three v3, two V2 of lower inlet valve and lower outlet valve V are opened
It opens, two v2 of upper inlet valve, upper outlet valve v and lower inlet valve one V1 and three V3 are closed, upper one c1 of compression chamber group and three c3, lower compression
Two C2 of chamber sucks gas, and gas is discharged in upper two c2 of compression chamber group, lower compression chamber one C1 and three C3, this is to be drained through journey under upper suction；Under
In half cycle, the driver D in body cavity group one B1 and three B3 is bent upwards, the driver D in two B2 of body cavity group is bent downwardly, enterprising
Mouth valve one v1 and three v3, two V2 of lower inlet valve and lower outlet valve V are closed, two v2 of upper inlet valve, upper outlet valve v and lower inlet valve one
V1 and three V3 is opened, and gas, upper two c2 of compression chamber group, lower compression is discharged in upper one c1 of compression chamber group and three c3, two C2 of lower compression chamber
Chamber one C1 and three C3 suck gas, this is to be drawn through journey under upper row；In the above-mentioned course of work, upper three c3 of compression chamber group of gas experience,
A two c2 and c1 or lower three C3 of compression chamber group, two C2 and a C1 accumulation step by step compression after alternately portal from above a0 or under portal
B0 discharge；When series valve z1 and vent valve y3 closing, intake valve z2 and parallel valve y1 and delivery valve y2 are opened, upper and lower compression unit
Parallel output, flow are big, the occasion suitable for low viscosity medical fluid high speed infusion；Intake valve z2 and parallel valve y1 and vent valve y3 is closed
It closes, when series valve z1 and delivery valve y2 are opened, upper and lower compression unit series connection connection output, pressure are high, are suitable for big viscosity medical fluid high pressure
The occasion of power infusion；When upper and lower compression unit series connection output, be first shut off series valve z1 and delivery valve y2, open intake valve z2 and
Parallel valve y1 makes compression unit elder generation parallel output up and down, changes related switch again after pressure in air storage chamber b9 rises cause setting value
The state of valve makes compression unit series connection output up and down；The gas of step by step compression makes the increase of air bag x1 volume simultaneously after entering air bag x1
Anther sac x2 is squeezed, anther sac x2 internal pressure increase forces medical fluid to export through perfusion tube q, the driving electricity that output flow passes through piezoelectric vibrator d
Pressure or flow valve m are adjusted；Gas, the replacement anther sac x2 in vent valve y3 releasing air bag x1 are opened after infusion.
In the present invention, lower compression chamber group Ci contained by the quantity of upper compression chamber group ci and lower compression unit contained by upper compression unit
Quantity it is equal, upper compression chamber c contained in the same body cavity group Bi is equal with the quantity of lower compression chamber C, and upper compression chamber c is under
Height and the radius difference of compression chamber C is equal；The pressure of upper and lower compression unit series connection output is 2 times of the pressure of parallel output,
The pressure of parallel output is equal to output pressure when upper compression unit works independently, maximum value Pmax=P0ηp{(1+α)/(1-
α)[β+(1+α)/(1-α)]n-1- 1 }, in which: P0For standard atmospheric pressure, ηpFor efficiency factor, α > 0 is that compression ratio, i.e. piezoelectricity shakes
The volume variable quantity of upper compression chamber c caused by sub- d deformation and the ratio between the volume of upper compression chamber c, β > 1 are each adjacent upper compression chamber
The minimum value of upper compression chamber c ratio of number contained by group ci, n >=2 are the quantity of upper compression chamber group ci contained by upper compression unit；Work
In, when two adjacent upper compression chamber group ci are interconnected, valve block e i.e. therebetween is opened, a fairly large number of upper compression containing upper compression chamber c
The volume variable quantity of chamber group ci is not less than the volume variable quantity of the upper compression chamber group ci containing upper compression chamber c negligible amounts；To obtain
Maximum compression ratio, the height of upper compression chamber c are equal to the deflection of piezoelectric vibrator d central point, and piezoelectric vibrator d is brilliant by equal thickness PZT4
The height of upper compression chamber c is when piece is formed with brass substrate bondingηh、U0Respectively dynamic corrections
Coefficient and driving voltage, d31For piezoelectric constant, hpFor the thickness of piezoelectric patches d2, r is the radius of upper compression chamber c.
Claims (1)
1. a kind of inflation extruding infusion set, it is characterised in that: main body be equipped with above enter hole, take outlet plenum and on portal
Boss and the rotary table group of at least two from left to right contained rotary table quantity successively reductions, a rotary table of each rotary table group are equipped with
Enterprising oral cavity and upper venthole only set upper vent hole on other rotary tables；Enterprising oral cavity in the rotary table group of the leftmost side and above enter Kong Lian
Logical, upper venthole in the rotary table group of the rightmost side is connected to through upper outlet chamber with above portalling；Upper venthole in same rotary table group and upper
Venthole is connected to through upper intercommunicating pore, and the enterprising oral cavity in two or so adjacent rotary table groups is connected to upper venthole；In the blister cavities of main body
Equipped with air bag and anther sac, blister cavities end is equipped with baffle, and syringe needle and flow valve are housed on the perfusion tube of anther sac；Pedestal is equipped with tripping in
Hole, the vestibule of leukorrhagia outlet plenum, portal under the air storage chamber being connected to lower outlet plenum and with rotary table group and its contained rotary table number
Amount difference equal body cavity group and body cavity；A body cavity in each body cavity group is equipped with lower inlet chamber and lower production well, Qi Tati
Lower venthole is provided only on chamber；Lower inlet chamber in the body cavity group of the leftmost side is connected to tripping in hole, the lower outlet of rightmost side body cavity group
Hole is connected to lower outlet plenum；Lower production well in same body cavity group is connected to lower venthole through lower intercommunicating pore, other two or so phases
Lower inlet chamber in adjacent body cavity group is connected to lower production well；Up and down disengaging oral cavity and its in install valve block respectively constitute up and down into
Outlet valve；For main body on the pedestal, partition is crimped on that hole is intracavitary, and driver is crimped on body cavity by the sealed circle of rotary table by boss
Interior, driver is made of the washer of two piezoelectric vibrators and its intermediate crimping；Driver and sealing ring and main body and pedestal are distinguished
Constitute compression chamber up and down, the compression chamber up and down in same body cavity group respectively and is unified into compression chamber group up and down, upper and lower compression chamber component
It is not connected into compression unit up and down, upper and lower compression unit is in parallel；On enter hole by the road and series valve is connected to air storage chamber, above enter hole
Intake valve is installed by the road；On portal by the road and parallel valve is connected to air storage chamber, above portal by the road and delivery valve and gas
Capsule connection, air bag are equipped with vent valve by the road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910191213.XA CN109821099B (en) | 2019-03-01 | 2019-03-01 | Inflatable extrusion type infusion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910191213.XA CN109821099B (en) | 2019-03-01 | 2019-03-01 | Inflatable extrusion type infusion device |
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| Publication Number | Publication Date |
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| CN109821099A true CN109821099A (en) | 2019-05-31 |
| CN109821099B CN109821099B (en) | 2021-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910191213.XA Active CN109821099B (en) | 2019-03-01 | 2019-03-01 | Inflatable extrusion type infusion device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1225023A (en) * | 1996-07-05 | 1999-08-04 | 诺沃挪第克公司 | Dose setting device |
| US20040073169A1 (en) * | 2000-09-28 | 2004-04-15 | Shai Amisar | Constant pressure apparatus for the administration of fluids intravenously |
| CN2673410Y (en) * | 2004-02-14 | 2005-01-26 | 王新明 | External wound serious patient fast pressurized transfusion device |
| US20080281278A1 (en) * | 2007-05-09 | 2008-11-13 | E-Z-Em, Inc. | Injector device, method, and computer program product for detecting a vacuum within a syringe |
| CN101528285A (en) * | 2006-10-26 | 2009-09-09 | 马林克罗特公司 | Medical fluid injector having a thermo-mechanical drive |
| CN102678528A (en) * | 2012-05-23 | 2012-09-19 | 浙江师范大学 | Series-parallel hybrid-driven piezoelectric pump |
-
2019
- 2019-03-01 CN CN201910191213.XA patent/CN109821099B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1225023A (en) * | 1996-07-05 | 1999-08-04 | 诺沃挪第克公司 | Dose setting device |
| US20040073169A1 (en) * | 2000-09-28 | 2004-04-15 | Shai Amisar | Constant pressure apparatus for the administration of fluids intravenously |
| CN2673410Y (en) * | 2004-02-14 | 2005-01-26 | 王新明 | External wound serious patient fast pressurized transfusion device |
| CN101528285A (en) * | 2006-10-26 | 2009-09-09 | 马林克罗特公司 | Medical fluid injector having a thermo-mechanical drive |
| US20080281278A1 (en) * | 2007-05-09 | 2008-11-13 | E-Z-Em, Inc. | Injector device, method, and computer program product for detecting a vacuum within a syringe |
| CN102678528A (en) * | 2012-05-23 | 2012-09-19 | 浙江师范大学 | Series-parallel hybrid-driven piezoelectric pump |
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| CN109821099B (en) | 2021-04-30 |
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