CA2418642A1 - Multiple channel magnetostrictive micropump - Google Patents
Multiple channel magnetostrictive micropump Download PDFInfo
- Publication number
- CA2418642A1 CA2418642A1 CA 2418642 CA2418642A CA2418642A1 CA 2418642 A1 CA2418642 A1 CA 2418642A1 CA 2418642 CA2418642 CA 2418642 CA 2418642 A CA2418642 A CA 2418642A CA 2418642 A1 CA2418642 A1 CA 2418642A1
- Authority
- CA
- Canada
- Prior art keywords
- micropump
- magnetostrictive
- header
- fluid
- cavities
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/14212—Pumping with an aspiration and an expulsion action
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
- A61M5/1452—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16804—Flow controllers
- A61M5/16827—Flow controllers controlling delivery of multiple fluids, e.g. sequencing, mixing or via separate flow-paths
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/02—General characteristics of the apparatus characterised by a particular materials
- A61M2205/0244—Micromachined materials, e.g. made from silicon wafers, microelectromechanical systems [MEMS] or comprising nanotechnology
Abstract
A multiple piston magnetostrictive micropump (1) is disclosed for pumping fluid from multiple intake ports (2,8,14,20) to multiple delivery ports (7,13,19,25) at low volumes and controlled flow rates. The pumping action is achieved by the coordinated sequential strain of magnetostrictive actuators (3,4,5,6) into cavities (29,30,31,32). The coordinated sequential strain of the magnetostrictive actuators (3,4,5,6) creates unidirectional flow of the fluid from one cavity to the next cavity until the fluid is delivered at delivery ports (7,13,19,25). The magnetostrictive actuators (3,4,5,6) preferably are of the FeDyTb elements composition type known as Terfenol-D
magnetostrictive materials providing greater magnetostriction and are isolated from the cavities (29,30,31,32) by thin seal layer (33). It is a further intent of this invention to provide accurate fluid volume mixtures at controlled flow rates by means of micromachined passage ways (27) embedded into micropump header (26).
magnetostrictive materials providing greater magnetostriction and are isolated from the cavities (29,30,31,32) by thin seal layer (33). It is a further intent of this invention to provide accurate fluid volume mixtures at controlled flow rates by means of micromachined passage ways (27) embedded into micropump header (26).
Description
MULTIPLE CHANNEL MAGNETOSTRICTIVE MICROPUMP
This invention pertains to the art of methods and apparatuses for pumping fluids from multiple inlet ports to multiple delivery outlet ports in low volumes, mixture rates and flow rates acid more specifically to methods and apparatuses for using a magnetostrictive driven pump to control the delivery of multiple fluids, such as medical, pharmaceutical and chemical fluids from multiple containers to multiple delivery points.
BACKGROUND OF THE INVENTION
Numerous fluid delivery applications found in such areas as medicine, chemistry, biochemistry, pharmaceutical research, electronics manufacturing and laboratory testing require micro scale fluid delivery control. Fluid delivery systems rely on a wide variety of pumps to move finite volumes of fluid from fluid containers to the delivery ports. Current pump designs and apparatus are based on plungers and diaphragms forcing fluid from precise cavities upon application of mechanical or electromechanical energy on such plungers or diaphragms. Such apparatuses perform ei~ciently in macro scale applications but tend to become less efficient when miniaturized to perform micro scale volumetric fluid delivery. Their design in micro scale applications involve moving parts and cantilevers leading to excessive wear due to friction, mechanical fatigue and premature lost of accuracy.
Other apparatuses include piezoelectric diaphragms, piezoelectric cantilevers and piezoelectric stacks used to force the fluid component out of preset cavities upon mechanical deflection or strain typical of piezoelectric elements. These apparatuses have long been limited in their applications due to the weak force and small displacement of the piezoelectric strain under voltage.
'\
i'
This invention pertains to the art of methods and apparatuses for pumping fluids from multiple inlet ports to multiple delivery outlet ports in low volumes, mixture rates and flow rates acid more specifically to methods and apparatuses for using a magnetostrictive driven pump to control the delivery of multiple fluids, such as medical, pharmaceutical and chemical fluids from multiple containers to multiple delivery points.
BACKGROUND OF THE INVENTION
Numerous fluid delivery applications found in such areas as medicine, chemistry, biochemistry, pharmaceutical research, electronics manufacturing and laboratory testing require micro scale fluid delivery control. Fluid delivery systems rely on a wide variety of pumps to move finite volumes of fluid from fluid containers to the delivery ports. Current pump designs and apparatus are based on plungers and diaphragms forcing fluid from precise cavities upon application of mechanical or electromechanical energy on such plungers or diaphragms. Such apparatuses perform ei~ciently in macro scale applications but tend to become less efficient when miniaturized to perform micro scale volumetric fluid delivery. Their design in micro scale applications involve moving parts and cantilevers leading to excessive wear due to friction, mechanical fatigue and premature lost of accuracy.
Other apparatuses include piezoelectric diaphragms, piezoelectric cantilevers and piezoelectric stacks used to force the fluid component out of preset cavities upon mechanical deflection or strain typical of piezoelectric elements. These apparatuses have long been limited in their applications due to the weak force and small displacement of the piezoelectric strain under voltage.
'\
i'
-2-A number of micropumps exist for delivering small amounts of fluid to a delivery point.
Some of the pump include a piezoelectric element which changes its dimension when it is stressed electrically by a voltage. U.S. patent No. 4,938,742 to xxxxx describes a micropump with piezoelectric valves. These valves contain a diaphragm covered by a single layer of piezoelectric material which limits the control and deflection of the valves.
U.S. Patent No. 5,611,676 to xxxxxxx describes the use of a cantilevered piezoelectric bimorph. A piezoelectric bimorph has two layer of a piezoelectric bimorph separated by a shim. The application of an electric field across the two layers of the bimorph causes one layer to expand while the other contracts. The net result is the curvature of the piezoelectric bimorph.
Other typical micropumps of this type are shown for example in the following Canada patents:
2,181,084Van Lintel 2,213,194Beckett 2,226,170Sohn, Zimet 2,354,076Jalink 2,356,342Zimlich, Bouton et Peters and United States of America. patents:
4,687,426Yoshimura 4,708,600Abujudom, II
et al.
4,938,742 4,939,405Okuyama, et al.
5,405,050Walsh 5,611,676 5,743,960Tisone 6,071,087Jalink, Jr., et al.
Though such apparatus have achieved some efficient applications, there has been a continuing need for improvement.
The present invention describes a new and improved method and apparatus that is simple in design, eff cient and compact. The new and improved magnetostrictive micropump provides increased fluid pumping control, accuracy and delivery capabilities at low energy consumption.
SUMMARY OF THE INVENTION
In accordance with the present invention, a new and improved magnetostrictive micropump is provided that pumps fluids from multiple containers to multiple delivery points in small, accurate amounts and at controlled flow rates and volumetric mixtures.
Some of the pump include a piezoelectric element which changes its dimension when it is stressed electrically by a voltage. U.S. patent No. 4,938,742 to xxxxx describes a micropump with piezoelectric valves. These valves contain a diaphragm covered by a single layer of piezoelectric material which limits the control and deflection of the valves.
U.S. Patent No. 5,611,676 to xxxxxxx describes the use of a cantilevered piezoelectric bimorph. A piezoelectric bimorph has two layer of a piezoelectric bimorph separated by a shim. The application of an electric field across the two layers of the bimorph causes one layer to expand while the other contracts. The net result is the curvature of the piezoelectric bimorph.
Other typical micropumps of this type are shown for example in the following Canada patents:
2,181,084Van Lintel 2,213,194Beckett 2,226,170Sohn, Zimet 2,354,076Jalink 2,356,342Zimlich, Bouton et Peters and United States of America. patents:
4,687,426Yoshimura 4,708,600Abujudom, II
et al.
4,938,742 4,939,405Okuyama, et al.
5,405,050Walsh 5,611,676 5,743,960Tisone 6,071,087Jalink, Jr., et al.
Though such apparatus have achieved some efficient applications, there has been a continuing need for improvement.
The present invention describes a new and improved method and apparatus that is simple in design, eff cient and compact. The new and improved magnetostrictive micropump provides increased fluid pumping control, accuracy and delivery capabilities at low energy consumption.
SUMMARY OF THE INVENTION
In accordance with the present invention, a new and improved magnetostrictive micropump is provided that pumps fluids from multiple containers to multiple delivery points in small, accurate amounts and at controlled flow rates and volumetric mixtures.
-3-According to one aspect of the present invention, a micropump for pumping fluids from containers to delivery points is disclosed that includes a micropu~np header, a micropump body and a micropump base. Passageways extend through the micropump header from the containers inlet ports to delivery points. The micropump body has rows of first, second, third and fourth cavities intersecting with passageways. The micropump body has rows of first, second, third and fourth cavities equal to number of passageways. A diaphragm seal separate the micropump header from the micropump body. The micropump base has rows of first, second, third and fourth magnetostrictive actuators secured to the micropump base and extending through the micropump body. The micropump body has rows of first, second, third and fourth cavities created by small dimensional gaps between micropump header, micropump body and micropump base magnetostrictive actuators.
The micropump body has rows of first, second, third and fourth cavities created between the mieropump header and diaphragm seal through bias magnetic pull of magnetostrictive actuators. An electrical apparatus supplies voltage to the first, second, third and fourth magnetostrictive actuators of first row causing the magnetostrictive actuators to raise and lower the diaphragm seal sequentially at predetermined intervals, thereby forcing flow of the fluid through the passageways of the first row.
According to another aspect of the present invention, a micropump for pumping fluids from containers to delivery points is disclosed that includes a micropump header, a micropump body and a micropump base. Passageways extend through the microp~.imp header from the containers inlet ports to delivery points. The micropump body has rows of first, second, third and fourth cavities intersecting with passageways. The micropump body has rows of first, second, third and fourth cavities equal to number of passageways. A diaphragm seal separate the micropump header from the micropump body. The micropump base has rows of first, second, third and fourth magnetostrictive actuators secured to the micropump base and extending through the micropurnp body. The micropump body has rows of first, second, third and fourth cavities created by small dimensional gaps between micropump header, micropump body and micropump base magnetostrictive actuators.
The micropump body has rows of first, second, third and fourth cavities created between the micropurnp header and diaphragm seal through bias magnetic pull of magnetostrictive actuators. An electrical apparatus supplies voltage to the first and second, third and fourth magnetostrictive actuators of second row causing the magnetostrictive actuators to raise and lower the diaphragm seal sequentially at predetermined intervals, thereby forcing flow of the fluid through the passageways of the second row.
According to another aspect of the present invention, a micropump for pumping fluids from containers to delivery points is disclosed that includes a micropump header, a micropump body and a micropump base. Passageways extend through the micropump header from the containers inlet ports to delivery points. The micropump body has rows of first, second, third and fourth cavities intersecting with passageways. The micropump body has rows of first, second, third and fourth cavities equal to number of passageways. A diaphragm seal separate the micropump header from the micropump body. The micropump base has rows of first, second, third and fourth magnetostrictive actuators secured to the micropump base and extending through the micropump body. The micropump body has rov,~s of first, second, third and fourth cavities created by small dimensional gaps between micropump header, micropump body and micropump base magnetostrictive actuators.
The micropump body has rows of f rst, second, third and fourth cavities created between the micropump header and diaphragm seal through bias magnetic pull of magnetostrictive actuators. An
The micropump body has rows of first, second, third and fourth cavities created between the mieropump header and diaphragm seal through bias magnetic pull of magnetostrictive actuators. An electrical apparatus supplies voltage to the first, second, third and fourth magnetostrictive actuators of first row causing the magnetostrictive actuators to raise and lower the diaphragm seal sequentially at predetermined intervals, thereby forcing flow of the fluid through the passageways of the first row.
According to another aspect of the present invention, a micropump for pumping fluids from containers to delivery points is disclosed that includes a micropump header, a micropump body and a micropump base. Passageways extend through the microp~.imp header from the containers inlet ports to delivery points. The micropump body has rows of first, second, third and fourth cavities intersecting with passageways. The micropump body has rows of first, second, third and fourth cavities equal to number of passageways. A diaphragm seal separate the micropump header from the micropump body. The micropump base has rows of first, second, third and fourth magnetostrictive actuators secured to the micropump base and extending through the micropurnp body. The micropump body has rows of first, second, third and fourth cavities created by small dimensional gaps between micropump header, micropump body and micropump base magnetostrictive actuators.
The micropump body has rows of first, second, third and fourth cavities created between the micropurnp header and diaphragm seal through bias magnetic pull of magnetostrictive actuators. An electrical apparatus supplies voltage to the first and second, third and fourth magnetostrictive actuators of second row causing the magnetostrictive actuators to raise and lower the diaphragm seal sequentially at predetermined intervals, thereby forcing flow of the fluid through the passageways of the second row.
According to another aspect of the present invention, a micropump for pumping fluids from containers to delivery points is disclosed that includes a micropump header, a micropump body and a micropump base. Passageways extend through the micropump header from the containers inlet ports to delivery points. The micropump body has rows of first, second, third and fourth cavities intersecting with passageways. The micropump body has rows of first, second, third and fourth cavities equal to number of passageways. A diaphragm seal separate the micropump header from the micropump body. The micropump base has rows of first, second, third and fourth magnetostrictive actuators secured to the micropump base and extending through the micropump body. The micropump body has rov,~s of first, second, third and fourth cavities created by small dimensional gaps between micropump header, micropump body and micropump base magnetostrictive actuators.
The micropump body has rows of f rst, second, third and fourth cavities created between the micropump header and diaphragm seal through bias magnetic pull of magnetostrictive actuators. An
-4-electrical apparatus supplies voltage to the first and second, third and fourth magnetostrictive actuators of third row causing the magnetostrictive actuators to raise and lower the diaphragm seal sequentially at predetermined intervals, thereby forcing flow o~f the fluid through the passageways of the third row.
According to another aspect of the present invention, a micropump for pumping fluids from containers to delivery points is disclosed that includes a micropump header, a micropurnp body and a micropump base. Passageways extend through the micropump header from the containers inlet ports to delivery points. The micropump body has rows of first, second, third and fourth cavities intersecting with passageways. The micropump body has rows of first, second, third and fourth cavities equal to number of passageways. A diaphragm seal separate the micropump header from the micropump body. The micropump base has rows of first, second, third and fourth magnetostrictive actuators secured to the micropump base and extending through the micropump body. The micropump body has rows of first, second, third and fourth cavities created by small dimensional gaps between micropump header, micropump body and micro:pump base rnagnetostrictive actuators.
The mieropump body has rows of first, second, third and fourth cavities created between the micropump header and diaphragm seal through bias magnetic pull of magnetostrictive actuators. An electrical apparatus supplies voltage to the first, second, third and fourth magnetostrictive actuators of fourth row causing the magnetostrictive actuators to raise and lower the diaphragm seal sequentially at predetermined intervals, thereby forcing flow of the fluid through the passageways of the fourth row.
According to another aspect of the present invention, a micropump for pumping fluids from containers to delivery points is disclosed that includes micropump header, mieropump body and micropump base. Micropump header includes four container inlet ports, four passage ways and four delivery ports. Micropump body includes four rows of first, second, third and fourth cavities.
Micropump base includes four rows of first, second, third and fourth magnetostrictive actuators for raising and lowering the diaphragm seal. An electrical apparatus supplies voltage to the first, second, third and fourth magnetostrictive actuator of each row sequentially at predetermined frequencies causing each row of magnetostrictive actuators to raise and lower the diaphragm seal sequentially at varying cycle rates, thereby forcing flow of the fluid through each passageways at varying flow rates.
The magnetostrictive actuators in the above-described micropump may be Terfenol-D
actuators or Terfenol-D powder composite elements.
'The micropump header in the above-described micropump may include interconnecting passageways causing volumetric fluid mixtures to the delivery ;ports.
Tie electrical apparatus in the above-described micropump may supply voltage to each magnetostrictive actuators at varying frequencies to adjust flowrate as a result of volumetric fluid mixture delivery.
One advantage of the present invention is that the micropump delivers multiple fluids at highly accurate and controlled micro to nano scale flow rates which is particularly advantageous far pharmaceutical, medical, biotech and microelectronics research and production.
According to another aspect of the present invention, a micropump for pumping fluids from containers to delivery points is disclosed that includes a micropump header, a micropurnp body and a micropump base. Passageways extend through the micropump header from the containers inlet ports to delivery points. The micropump body has rows of first, second, third and fourth cavities intersecting with passageways. The micropump body has rows of first, second, third and fourth cavities equal to number of passageways. A diaphragm seal separate the micropump header from the micropump body. The micropump base has rows of first, second, third and fourth magnetostrictive actuators secured to the micropump base and extending through the micropump body. The micropump body has rows of first, second, third and fourth cavities created by small dimensional gaps between micropump header, micropump body and micro:pump base rnagnetostrictive actuators.
The mieropump body has rows of first, second, third and fourth cavities created between the micropump header and diaphragm seal through bias magnetic pull of magnetostrictive actuators. An electrical apparatus supplies voltage to the first, second, third and fourth magnetostrictive actuators of fourth row causing the magnetostrictive actuators to raise and lower the diaphragm seal sequentially at predetermined intervals, thereby forcing flow of the fluid through the passageways of the fourth row.
According to another aspect of the present invention, a micropump for pumping fluids from containers to delivery points is disclosed that includes micropump header, mieropump body and micropump base. Micropump header includes four container inlet ports, four passage ways and four delivery ports. Micropump body includes four rows of first, second, third and fourth cavities.
Micropump base includes four rows of first, second, third and fourth magnetostrictive actuators for raising and lowering the diaphragm seal. An electrical apparatus supplies voltage to the first, second, third and fourth magnetostrictive actuator of each row sequentially at predetermined frequencies causing each row of magnetostrictive actuators to raise and lower the diaphragm seal sequentially at varying cycle rates, thereby forcing flow of the fluid through each passageways at varying flow rates.
The magnetostrictive actuators in the above-described micropump may be Terfenol-D
actuators or Terfenol-D powder composite elements.
'The micropump header in the above-described micropump may include interconnecting passageways causing volumetric fluid mixtures to the delivery ;ports.
Tie electrical apparatus in the above-described micropump may supply voltage to each magnetostrictive actuators at varying frequencies to adjust flowrate as a result of volumetric fluid mixture delivery.
One advantage of the present invention is that the micropump delivers multiple fluids at highly accurate and controlled micro to nano scale flow rates which is particularly advantageous far pharmaceutical, medical, biotech and microelectronics research and production.
-5-Another advantage of the present invention is that the micropump delivers multiple fluids, each having independent, highly accurate and controlled micro and nano scale flow rate.
Another advantage of the present invention is that the micropump delivers multiple volumetric fluid mixture from multiple fluid container inlets each having independant, highly accurate and controlled micro and nano scale flow rate.
In the drawings, which form part of this specification, Figure 1 is a cross-sectional view of the multiple channel magnetostrictive micropump.
Figure 2 is an exploded view of the multiple channel magnetostrictive micropump.
Figure 3 is a top view of the micropump body of figure 1 taken along line 3-3.
Figure 4 is a top view of the diaphragm seal.
Figure 5 is a bottom cross-sectional view of the micropump body of figure 1 taken along line 2-2.
Figure 6 is a bottom view of the micropurnp header of figure 1 taken along line 1-1 Figure 7 is a bottom view of an alternative embodiment of micropump header.
DETAILED DESCRIPTION OF THE INVENTION
In the particularly advantageous embodiment of the invention, figure 1 is a perspective and cross-sectional view of a multiple channel magnetostrietive micropump 1 for delivering highly accurate amounts of fluids from container inlet ports 2,8,14,20 to delivery points 7,13,19,25. The micropump 1 includes a micropump header 26, a micropump body 28, a micropump base 34 and a diaphragm seal 33. In a preferred embodiment, the micropump header 26 is preferably made of machined stainless steel material, the micropump body 28 and micropump base 34 are preferably made of moulded plastic such as glass fiber-reinforced nylon. 'The diaphragm seal 33 may be made of anti-contaminant and anti-microbial material.
With continuing reference to figure l, figure 2 is an exploded side view of micropump 1.
Magnetostrictive actuators 70,71,72,73 slide into electromagnetic coils 120,121,122,123 and into vertical electromagnetic shied 11 and into horizontal electromagnetic shields and secured to micropump base 34. The assembly of micropump base 34 into micropump body 28 creates a dimensional gap into micropump body cylinders 86,87,88,89 referred to as cavities 29,30,31,32.
Another advantage of the present invention is that the micropump delivers multiple volumetric fluid mixture from multiple fluid container inlets each having independant, highly accurate and controlled micro and nano scale flow rate.
In the drawings, which form part of this specification, Figure 1 is a cross-sectional view of the multiple channel magnetostrictive micropump.
Figure 2 is an exploded view of the multiple channel magnetostrictive micropump.
Figure 3 is a top view of the micropump body of figure 1 taken along line 3-3.
Figure 4 is a top view of the diaphragm seal.
Figure 5 is a bottom cross-sectional view of the micropump body of figure 1 taken along line 2-2.
Figure 6 is a bottom view of the micropurnp header of figure 1 taken along line 1-1 Figure 7 is a bottom view of an alternative embodiment of micropump header.
DETAILED DESCRIPTION OF THE INVENTION
In the particularly advantageous embodiment of the invention, figure 1 is a perspective and cross-sectional view of a multiple channel magnetostrietive micropump 1 for delivering highly accurate amounts of fluids from container inlet ports 2,8,14,20 to delivery points 7,13,19,25. The micropump 1 includes a micropump header 26, a micropump body 28, a micropump base 34 and a diaphragm seal 33. In a preferred embodiment, the micropump header 26 is preferably made of machined stainless steel material, the micropump body 28 and micropump base 34 are preferably made of moulded plastic such as glass fiber-reinforced nylon. 'The diaphragm seal 33 may be made of anti-contaminant and anti-microbial material.
With continuing reference to figure l, figure 2 is an exploded side view of micropump 1.
Magnetostrictive actuators 70,71,72,73 slide into electromagnetic coils 120,121,122,123 and into vertical electromagnetic shied 11 and into horizontal electromagnetic shields and secured to micropump base 34. The assembly of micropump base 34 into micropump body 28 creates a dimensional gap into micropump body cylinders 86,87,88,89 referred to as cavities 29,30,31,32.
-6-With continued reference to figure l, figure 3 is a cross-sectional view of micropump 1 of figure 1 taken along line 3-3. The micropump 1 has rows of cylinders (86,87,88,89) (90,91,92,93) required to receive rows of magnetostrictive actuators (70,'11,72,73) (74,75,76,77) secured onto micropump base 28.
With reference to figure 2, figure 4 is a diaphragm seal 33. Diaphragm seal 33 is secured between micropump header 26 and micropump body 28. Surface 16 is a thin layer of diaphragm seal 33 made of magnetized steel. Surface 17 is a thin uniform layer of anti-contaminant and anti-microbial coating achieved through vacuum deposition.
With continuing reference to Figure 1, figure 5 is a cross-sectional view of micropump 1 of figure 1 taken along line 2-2. Micropump body 28 includes printed circuit board 22 enabling electrical connections to electromagnetic coils 120 to 135. Figure 5 shows electromagnetic coils 123, 127, I 31,13 5. Printed circuit board 22 includes conductors 9,10,11,12 extending on solder side of printed circuit board from connector 15 to electromagnetic coils 120 to 135. Conductors 9,10,11,12 are connected to first lead of electromagnetic coils 120 to 13 5.
Printed circuit board 22 includes conductors 35,36,37,38 extending on component side of printed circuit board from connector 15 to electromagnetic coils 120 to 135. Conductors 35,36,37,38 are connected to second lead of electromagnetic coils 120 to 135. The method and apparatus for supplying voltage to electromagnetic coils as illustrated by figure 5 is particularly advantageous for control purposes and enables the sequential addressing and activation of electromal;netic coils in rows and columns such as a electromagnetic coils matrix. The method and apparatus for supplying voltage to electromagnetic coils 120 to 135 as illustrated by figure 5 is particularly advantageous for addressing each electromagnetic coil at different frequency cycles.
With continuing reference to Figure 1, figure 6 shows a bottom view of micrapump header 26 of figure 1 taken along line 1-1. Inlets bores 51;52,53,54 are machined into the micropump header 26 and include microfluidic valves 59,60,61,62 which are mechanically inserted into the inlet bores 51,52,53,54. Passageways 55,56,57,58 are micromachined into the bottom surface of the micropump header 26 and extend to delivery bores 63,64,65,66. The passageways 55,56,57,58 and all other micropump surfaces acting in direct contact with the fluids are compatible with the fluids to be pumped and delivered.
With continued reference to figure 6, the fluids are forced to flow across the micropump header 26 along four channels:
Inlet bore Valve Pas;>ageways Delivery bore First channel51 60 55 59 Second channel52 61 56 60 Third channel53 62 57 61 Fourth channel54 63 58 62 With continuing reference to Figure l, figure 7 shows a bottom view of an alternative embodiment micropump header 26 of figure I taken along line 1-1. Inlets bores 51,52,53,54 are machined into the micropump header 26 and include microfluidic valves 59,60,61,62 which are 7_ mechanically inserted into the inlet bores 51,52,53,54. Passageways 55,56,57,58 are micromachined into the bottom surface of the micropump header 2~: Passageway 56 extend to delivery bore 64.
Passageway 57 extend to delivery bore 65. Passageway SS extend beyond corresponding cylinder 88 of micropump body 28 and interconnect with passage way 56. Passageway 58 extend beyond corresponding cylinder 100 of micropump body 28 and interconnect with passage way 57. The micropump header embodiment illustrated by figure 7 allows for fluid mixtures.
The passageways 55,56,57,58 and all other micropump surfaces acting in direct contact with the fluids are compatible with the fluids to be pumped and delivered.
With reference to figure 2, figure 4 is a diaphragm seal 33. Diaphragm seal 33 is secured between micropump header 26 and micropump body 28. Surface 16 is a thin layer of diaphragm seal 33 made of magnetized steel. Surface 17 is a thin uniform layer of anti-contaminant and anti-microbial coating achieved through vacuum deposition.
With continuing reference to Figure 1, figure 5 is a cross-sectional view of micropump 1 of figure 1 taken along line 2-2. Micropump body 28 includes printed circuit board 22 enabling electrical connections to electromagnetic coils 120 to 135. Figure 5 shows electromagnetic coils 123, 127, I 31,13 5. Printed circuit board 22 includes conductors 9,10,11,12 extending on solder side of printed circuit board from connector 15 to electromagnetic coils 120 to 135. Conductors 9,10,11,12 are connected to first lead of electromagnetic coils 120 to 13 5.
Printed circuit board 22 includes conductors 35,36,37,38 extending on component side of printed circuit board from connector 15 to electromagnetic coils 120 to 135. Conductors 35,36,37,38 are connected to second lead of electromagnetic coils 120 to 135. The method and apparatus for supplying voltage to electromagnetic coils as illustrated by figure 5 is particularly advantageous for control purposes and enables the sequential addressing and activation of electromal;netic coils in rows and columns such as a electromagnetic coils matrix. The method and apparatus for supplying voltage to electromagnetic coils 120 to 135 as illustrated by figure 5 is particularly advantageous for addressing each electromagnetic coil at different frequency cycles.
With continuing reference to Figure 1, figure 6 shows a bottom view of micrapump header 26 of figure 1 taken along line 1-1. Inlets bores 51;52,53,54 are machined into the micropump header 26 and include microfluidic valves 59,60,61,62 which are mechanically inserted into the inlet bores 51,52,53,54. Passageways 55,56,57,58 are micromachined into the bottom surface of the micropump header 26 and extend to delivery bores 63,64,65,66. The passageways 55,56,57,58 and all other micropump surfaces acting in direct contact with the fluids are compatible with the fluids to be pumped and delivered.
With continued reference to figure 6, the fluids are forced to flow across the micropump header 26 along four channels:
Inlet bore Valve Pas;>ageways Delivery bore First channel51 60 55 59 Second channel52 61 56 60 Third channel53 62 57 61 Fourth channel54 63 58 62 With continuing reference to Figure l, figure 7 shows a bottom view of an alternative embodiment micropump header 26 of figure I taken along line 1-1. Inlets bores 51,52,53,54 are machined into the micropump header 26 and include microfluidic valves 59,60,61,62 which are 7_ mechanically inserted into the inlet bores 51,52,53,54. Passageways 55,56,57,58 are micromachined into the bottom surface of the micropump header 2~: Passageway 56 extend to delivery bore 64.
Passageway 57 extend to delivery bore 65. Passageway SS extend beyond corresponding cylinder 88 of micropump body 28 and interconnect with passage way 56. Passageway 58 extend beyond corresponding cylinder 100 of micropump body 28 and interconnect with passage way 57. The micropump header embodiment illustrated by figure 7 allows for fluid mixtures.
The passageways 55,56,57,58 and all other micropump surfaces acting in direct contact with the fluids are compatible with the fluids to be pumped and delivered.
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2418642 CA2418642A1 (en) | 2003-02-13 | 2003-02-13 | Multiple channel magnetostrictive micropump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2418642 CA2418642A1 (en) | 2003-02-13 | 2003-02-13 | Multiple channel magnetostrictive micropump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2418642A1 true CA2418642A1 (en) | 2004-08-13 |
Family
ID=32831593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2418642 Abandoned CA2418642A1 (en) | 2003-02-13 | 2003-02-13 | Multiple channel magnetostrictive micropump |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2418642A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113904521A (en) * | 2021-12-08 | 2022-01-07 | 杭州未名信科科技有限公司 | Multi-stage electroosmosis micropump |
-
2003
- 2003-02-13 CA CA 2418642 patent/CA2418642A1/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113904521A (en) * | 2021-12-08 | 2022-01-07 | 杭州未名信科科技有限公司 | Multi-stage electroosmosis micropump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6827559B2 (en) | Piezoelectric micropump with diaphragm and valves | |
| US8308452B2 (en) | Dual chamber valveless MEMS micropump | |
| Cao et al. | Design and simulation of an implantable medical drug delivery system using microelectromechanical systems technology | |
| Carrozza et al. | A piezoelectric-driven stereolithography-fabricated micropump | |
| US6786708B2 (en) | Laminated devices and methods of making same | |
| AU2009340060B2 (en) | Magnetically driven micropump | |
| US8807169B2 (en) | Flow control system for a micropump | |
| US11311878B2 (en) | Microfluidic device | |
| CN101354030B (en) | Micro-fluid pump with active control capability | |
| KR20010094732A (en) | Piezoelectric micropump | |
| CN101588838A (en) | Miniature valve | |
| WO2001020166A1 (en) | Dual diaphragm pump | |
| Meng et al. | A check-valved silicone diaphragm pump | |
| Lee et al. | Bidirectional pumping properties of a peristaltic piezoelectric micropump with simple design and chemical resistance | |
| CN102428273A (en) | Micropump | |
| CA2418642A1 (en) | Multiple channel magnetostrictive micropump | |
| Geipel et al. | Pressure-independent micropump with piezoelectric valves for low flow drug delivery systems | |
| Dolžan et al. | Self-priming bubble tolerant microcylinder pump | |
| Tracey et al. | Dual independent displacement-amplified micropumps with a single actuator | |
| US20090211643A1 (en) | Three dimensional micro-fluidic pumps and valves | |
| Kang et al. | A self-priming, high performance, check valve diaphragm micropump made from SOI wafers | |
| KR102140874B1 (en) | Self-generated Peristaltic Micro Pump with Curved Fluid Chamber and Method for Manufacturing the Curved Fluid Chamber | |
| Shabanian et al. | The deformable valve pump (DVP) | |
| AU2012244248B2 (en) | Magnetically driven micropump | |
| JP2002102768A (en) | Device and method for supplying fluid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |