US20090097995A1 - Syringe pump - Google Patents

Syringe pump Download PDF

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Publication number
US20090097995A1
US20090097995A1 US12/250,365 US25036508A US2009097995A1 US 20090097995 A1 US20090097995 A1 US 20090097995A1 US 25036508 A US25036508 A US 25036508A US 2009097995 A1 US2009097995 A1 US 2009097995A1
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US
United States
Prior art keywords
piston
syringe pump
linear actuator
pump according
cylinder
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
Application number
US12/250,365
Inventor
Young-Bog Ham
Jung-Ho Park
So-Nam Yun
Woo-Suk Seo
Tae-Young Chung
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Korea Institute of Machinery and Materials KIMM
Original Assignee
Korea Institute of Machinery and Materials KIMM
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Korea Institute of Machinery and Materials KIMM filed Critical Korea Institute of Machinery and Materials KIMM
Assigned to KOREA INSTITUTE OF MACHINERY & MATERIALS reassignment KOREA INSTITUTE OF MACHINERY & MATERIALS ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHUNG, TAE-YOUNG, HAM, YOUNG-BOG, PARK, JUNG-HO, SEO, WOO-SUK, YUN, SO-NAM
Publication of US20090097995A1 publication Critical patent/US20090097995A1/en
Abandoned legal-status Critical Current

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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
    • A61M5/145—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
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M5/14212—Pumping with an aspiration and an expulsion action
    • A61M5/14216—Reciprocating piston type
    • 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
    • A61M2205/0272—Electro-active or magneto-active materials
    • A61M2205/0294—Piezoelectric materials
    • 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
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
    • A61M5/31515—Connection of piston with piston rod

Definitions

  • the present invention relates to a syringe pump for suction and exhaustion of a fixed quantity, and more particularly to a syringe pump, which is capable of taking in and out a fixed quantity of liquid or powder (hereinafter, collectively referred to as “fluid”) more precisely by moving a piston using a linear actuator.
  • the above syringe pump uses the linear actuator which applies linear motion of a piezoelectric motor in order to move the piston, such that suction and exhaustion of the fluid can be performed more precisely through controlling of power supply with respect to the piezoelectric linear motor.
  • a fixed quantity feeder system is used to supply a precise quantity of chemical solution in a laboratory or medical substance as a medical instrument.
  • a stepping motor is generally used as a driving means for controlling the movement of a piston.
  • the conventional fixed quantity feeder system has such a complicated structure that manufacturing thereof is difficult. Furthermore, since the structure is hard to be in a compact size, handling of the system is inconvenient.
  • the stepping motor conventionally applied in the fixed quantity feeder system may sometimes cause vibration or resonance at certain frequency, thereby deteriorating the function of supplying a fixed quantity fluid.
  • the present invention has been made in view of the above problems, and it is an object of the present invention to provide a syringe pump, capable of controlling movement of a piston more precisely.
  • a syringe pump capable of controlling a moving distance of a piston more precisely by intermittently supplying power to a linear actuator that moves the piston, and accordingly precisely controlling quantity of fluid being taken in and out of a cylinder.
  • a syringe pump comprising a cylinder which includes a receiving space, a piston which is mounted in the cylinder to pump liquid or powder in and out of the cylinder, and a piezoelectric linear actuator which moves the piston in a reciprocating manner.
  • the piezoelectric linear actuator may comprise a piezoelectric motor constituted by piezoelectric mediums.
  • FIG. 1 is a sectional view of a syringe pump according to an embodiment of the present invention
  • FIG. 2 is an exploded perspective view showing a piston and an actuator of the syringe pump shown in FIG. 1 ;
  • FIG. 3 is a sectional view of a syringe pump according to another embodiment of the present invention.
  • FIG. 4 is an exploded perspective view showing a piston and an actuator of the syringe pump shown in FIG. 3 .
  • FIG. 1 is a sectional view of a syringe pump according to an embodiment of the present invention
  • FIG. 2 is an exploded perspective view showing a piston and an actuator of the syringe pump shown in FIG. 1 .
  • FIG. 3 is a sectional view of a syringe pump according to another embodiment of the present invention
  • FIG. 4 is an exploded perspective view showing a piston and an actuator of the syringe pump shown in FIG. 3 .
  • the syringe pump includes a linear actuator 3 .
  • the syringe pump comprises a cylinder 1 which includes a receiving space, a piston 2 which is mounted in the cylinder 1 to move liquid or powder in and out with respect to the cylinder 1 , and a linear motor 3 which moves the piston 2 in a reciprocating motion.
  • the cylinder 1 and the piston 2 are used to take in certain liquid or micro powder and exhaust the liquid or powder to a desired place, having a similar structure with a syringe.
  • the liquid and powder will be referred to as fluid.
  • the cylinder 1 is formed as a tube holding a receiving space 1 a for receiving the fluid. As shown in FIG. 1 and FIG. 3 , one end of the cylinder 1 is totally open while the other end is sealed but having an inlet and outlet hole to let the fluid move in and out.
  • the cylinder 1 further includes a needle connection part 11 having a small diameter at the inlet and outlet hole such that the fluid can be supplied to or taken in from a narrow space as desired. Additionally, a needle 4 is removably connected to the needle connection part 11 .
  • the needle 4 comprises a longitudinal fluid hole 4 a having a very small diameter, and a piston connection part 41 fixed to the needle connection part 11 .
  • the above cylinder 1 and needle 4 are structured in substantially the same manner as those of a general syringe. Therefore, the structure of the present invention can be achieved by adding a piston which includes the linear actuator 3 to the general conventional syringe.
  • the linear actuator 3 constituting the syringe pump, as shown in the drawings, is preferably implemented by a piezoelectric linear motor in order to reciprocate the piston 2 .
  • the piezoelectric linear motor is a sort of motor that applies the principle in that a piezoelectric element contracts and expands according to power supply. As shown in the drawings, the piezoelectric linear motor includes a plurality of legs extending and contracting in a certain direction like a motion of an inchworm in accordance with power supply, thereby moving by itself or moving other parts in a pushing manner. Since the piezoelectric linear motor is generally known and applied in the art, detailed description thereof will be omitted herein.
  • the piston 2 includes a connection recess 21 having a spherical shape for connection with a connection protrusion 31 having a spherical shape formed on a bottom surface of the linear actuator 3 , so that the linear actuator 3 can be directly connected with the piston 2 .
  • the linear actuator 3 shown in FIG. 1 and FIG. 2 can move the piston 2 by moving by itself.
  • FIG. 3 and FIG. 4 Another method for achieving connection between the piston 2 and the linear actuator 3 is illustrated in FIG. 3 and FIG. 4 .
  • a rod 5 may be additionally mounted between the piston 2 and the linear actuator 3 .
  • the rod 5 is used to connect the piston 2 to the linear actuator 3 and therefore, the piston 2 is moved as the rod 5 is moved up and down by the operation of the linear actuator 3 . That is, the linear actuator 3 pushes the rod 5 , while being fixed to the inner wall of the cylinder 1 .
  • the linear actuator 3 used in the embodiment of the present invention can also be easily adopted in existing syringe pumps.
  • connection protrusion 51 having a spherical shape is formed at an end of the rod 5 , facing the piston 2 so as to connect the rod 5 with the piston 2 .
  • the piston 2 is formed with the connection recess 21 of a spherical shape for force-fit with the connection protrusion 51 .
  • connection parts of the rod 5 and the piston 2 are structured in the form of the spherical protrusion and the spherical recess, respectively, the piston 2 can be moved vertically in the cylinder 1 even when the rod 5 is inclined to a certain direction.
  • a sealant member 2 a is mounted around the outer circumference of the piston 2 to prevent leakage of the fluid through a gap between the piston 2 and the cylinder 1 .
  • the linear actuator 3 may have various modified configurations according to the present invention. Also, the embodiment is illustrated in the drawings only by way of example, but does not limit the present invention.
  • control of a moving distance of a piston can be performed more precisely by intermittently supplying power to a linear actuator.
  • quantity of fluid taken in and out of a cylinder can be precisely controlled.
  • the piezoelectric linear motor is used as a linear actuator for operating the piston, the syringe pump can be achieved in a compacter size.

Abstract

A syringe pump is disclosed, which uses the linear actuator applying a linear motion of a piezoelectric linear motor in moving the piston, such that suction and exhaustion of the fluid can be performed more precisely through controlling of power supply with respect to the piezoelectric linear motor.
The syringe pump includes a cylinder which includes a receiving space, a piston which is mounted in the cylinder to pump liquid or powder in and out of the cylinder, and a piezoelectric linear actuator which moves the piston in a reciprocating manner. In addition, the piezoelectric linear actuator comprises a piezoelectric linear motor.

Description

    BACKGROUND
  • 1. Technical Field
  • The present invention relates to a syringe pump for suction and exhaustion of a fixed quantity, and more particularly to a syringe pump, which is capable of taking in and out a fixed quantity of liquid or powder (hereinafter, collectively referred to as “fluid”) more precisely by moving a piston using a linear actuator.
  • Especially, the above syringe pump uses the linear actuator which applies linear motion of a piezoelectric motor in order to move the piston, such that suction and exhaustion of the fluid can be performed more precisely through controlling of power supply with respect to the piezoelectric linear motor.
  • 2. Description of the Related Art
  • Generally, a fixed quantity feeder system is used to supply a precise quantity of chemical solution in a laboratory or medical substance as a medical instrument.
  • In such a fixed quantity feeder system, a stepping motor is generally used as a driving means for controlling the movement of a piston.
  • However, the conventional fixed quantity feeder system has such a complicated structure that manufacturing thereof is difficult. Furthermore, since the structure is hard to be in a compact size, handling of the system is inconvenient.
  • In addition, the stepping motor conventionally applied in the fixed quantity feeder system may sometimes cause vibration or resonance at certain frequency, thereby deteriorating the function of supplying a fixed quantity fluid.
    • BRIEF SUMMARY
  • Therefore, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a syringe pump, capable of controlling movement of a piston more precisely.
  • Especially, it is another object of the present invention to provide a syringe pump, capable of controlling a moving distance of a piston more precisely by intermittently supplying power to a linear actuator that moves the piston, and accordingly precisely controlling quantity of fluid being taken in and out of a cylinder.
  • More preferably, it is yet another object of the present invention to provide a syringe pump, capable of reducing the whole size of the pump by using the piezoelectric linear motor as a linear actuator.
  • In accordance with an aspect of the present invention, there is provided a syringe pump comprising a cylinder which includes a receiving space, a piston which is mounted in the cylinder to pump liquid or powder in and out of the cylinder, and a piezoelectric linear actuator which moves the piston in a reciprocating manner.
  • In addition, the piezoelectric linear actuator may comprise a piezoelectric motor constituted by piezoelectric mediums.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • The above and other objects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:
  • FIG. 1 is a sectional view of a syringe pump according to an embodiment of the present invention;
  • FIG. 2 is an exploded perspective view showing a piston and an actuator of the syringe pump shown in FIG. 1;
  • FIG. 3 is a sectional view of a syringe pump according to another embodiment of the present invention; and
  • FIG. 4 is an exploded perspective view showing a piston and an actuator of the syringe pump shown in FIG. 3.
    •  DETAILED DESCRIPTION
  • Hereinafter, an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings such that those who are skilled in the art can easily understand and implement the present invention.
  • FIG. 1 is a sectional view of a syringe pump according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view showing a piston and an actuator of the syringe pump shown in FIG. 1.
  • FIG. 3 is a sectional view of a syringe pump according to another embodiment of the present invention, and FIG. 4 is an exploded perspective view showing a piston and an actuator of the syringe pump shown in FIG. 3.
  • As shown in the drawings, the syringe pump includes a linear actuator 3.
  • More specifically, the syringe pump according to the embodiment of the present invention comprises a cylinder 1 which includes a receiving space, a piston 2 which is mounted in the cylinder 1 to move liquid or powder in and out with respect to the cylinder 1, and a linear motor 3 which moves the piston 2 in a reciprocating motion.
  • In the above-structured syringe pump with the piezoelectric linear motor, the cylinder 1 and the piston 2 are used to take in certain liquid or micro powder and exhaust the liquid or powder to a desired place, having a similar structure with a syringe. The liquid and powder will be referred to as fluid.
  • That is, the cylinder 1 is formed as a tube holding a receiving space 1 a for receiving the fluid. As shown in FIG. 1 and FIG. 3, one end of the cylinder 1 is totally open while the other end is sealed but having an inlet and outlet hole to let the fluid move in and out.
  • The cylinder 1 further includes a needle connection part 11 having a small diameter at the inlet and outlet hole such that the fluid can be supplied to or taken in from a narrow space as desired. Additionally, a needle 4 is removably connected to the needle connection part 11.
  • As shown in FIGS. 1 and 3, the needle 4 comprises a longitudinal fluid hole 4 a having a very small diameter, and a piston connection part 41 fixed to the needle connection part 11.
  • The above cylinder 1 and needle 4 are structured in substantially the same manner as those of a general syringe. Therefore, the structure of the present invention can be achieved by adding a piston which includes the linear actuator 3 to the general conventional syringe.
  • The linear actuator 3 constituting the syringe pump, as shown in the drawings, is preferably implemented by a piezoelectric linear motor in order to reciprocate the piston 2.
  • The piezoelectric linear motor is a sort of motor that applies the principle in that a piezoelectric element contracts and expands according to power supply. As shown in the drawings, the piezoelectric linear motor includes a plurality of legs extending and contracting in a certain direction like a motion of an inchworm in accordance with power supply, thereby moving by itself or moving other parts in a pushing manner. Since the piezoelectric linear motor is generally known and applied in the art, detailed description thereof will be omitted herein.
  • In the above structure, as shown in FIG. 1 and FIG. 2, the piston 2 includes a connection recess 21 having a spherical shape for connection with a connection protrusion 31 having a spherical shape formed on a bottom surface of the linear actuator 3, so that the linear actuator 3 can be directly connected with the piston 2.
  • In a case where the piston 2 is thus directly connected to the linear actuator 3, the piston 2 is moved as the linear actuator 3 moves along an inner wall of the cylinder 1.
  • In other words, the linear actuator 3 shown in FIG. 1 and FIG. 2 can move the piston 2 by moving by itself.
  • Another method for achieving connection between the piston 2 and the linear actuator 3 is illustrated in FIG. 3 and FIG. 4.
  • As shown in the drawings, a rod 5 may be additionally mounted between the piston 2 and the linear actuator 3.
  • More specifically, as shown in FIG. 3 and FIG. 4, the rod 5 is used to connect the piston 2 to the linear actuator 3 and therefore, the piston 2 is moved as the rod 5 is moved up and down by the operation of the linear actuator 3. That is, the linear actuator 3 pushes the rod 5, while being fixed to the inner wall of the cylinder 1.
  • Furthermore, when the piston 2 is connected thus using the rod 5, the linear actuator 3 used in the embodiment of the present invention can also be easily adopted in existing syringe pumps.
  • As shown in the drawings, a connection protrusion 51 having a spherical shape is formed at an end of the rod 5, facing the piston 2 so as to connect the rod 5 with the piston 2. In addition, the piston 2 is formed with the connection recess 21 of a spherical shape for force-fit with the connection protrusion 51.
  • Thus, since connection parts of the rod 5 and the piston 2 are structured in the form of the spherical protrusion and the spherical recess, respectively, the piston 2 can be moved vertically in the cylinder 1 even when the rod 5 is inclined to a certain direction.
  • In addition, a sealant member 2 a is mounted around the outer circumference of the piston 2 to prevent leakage of the fluid through a gap between the piston 2 and the cylinder 1.
  • In the above-structured syringe pump, the linear actuator 3 may have various modified configurations according to the present invention. Also, the embodiment is illustrated in the drawings only by way of example, but does not limit the present invention.
  • As can be appreciated from the above description, in accordance with a syringe pump according to the embodiment of the present invention, control of a moving distance of a piston can be performed more precisely by intermittently supplying power to a linear actuator. As a result, quantity of fluid taken in and out of a cylinder can be precisely controlled.
  • Especially, since the piezoelectric linear motor is used as a linear actuator for operating the piston, the syringe pump can be achieved in a compacter size.
  • Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims (10)

1. A syringe pump comprising:
a cylinder which includes a receiving space;
a piston which is mounted in the cylinder to pump liquid or powder in and out of the cylinder; and
a piezoelectric linear actuator which moves the piston in a reciprocating manner.
2. The syringe pump according to claim 1, wherein the piezoelectric linear actuator comprises a piezoelectric linear motor performing a linear motion.
3. The syringe pump according to claim 1, further comprising a rod mounted between the piston and the linear actuator.
4. The syringe pump according to claim 2, further comprising a rod mounted between the piston and the linear actuator.
5. The syringe pump according to claim 3, wherein the rod includes a connection protrusion formed in a spherical shape on a surface thereof facing the piston, and the piston includes a connection recess formed in a spherical shape and ball-jointed with the connection protrusion.
6. The syringe pump according to claim 4, wherein the rod includes a connection protrusion formed in a spherical shape on a surface thereof facing the piston, and the piston includes a connection recess formed in a spherical shape and ball-jointed with the connection protrusion.
7. The syringe pump according to claim 5, further comprising a sealant member mounted around the outer circumference of the piston.
8. The syringe pump according to claim 6, further comprising a sealant member mounted around the outer circumference of the piston.
9. The syringe pump according to claim 7, further comprising:
a needle connection part having a small diameter, being disposed an inlet and outlet end; and
a needle removably connected to the needle connection part.
10. The syringe pump according to claim 8, further comprising:
a needle connection part having a small diameter, being disposed an inlet and outlet end; and
a needle removably connected to the needle connection part.
US12/250,365 2007-10-15 2008-10-13 Syringe pump Abandoned US20090097995A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20070103742 2007-10-15
KR10-2007-0103742 2007-10-15

Publications (1)

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EP (1) EP2065062A1 (en)
JP (1) JP2009097516A (en)

Cited By (8)

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US20110216013A1 (en) * 2010-03-05 2011-09-08 Sony Ericsson Mobile Communications Ab Touch-sensitive input device, touch screen device, mobile device and method for operating a touch-sensitive input device
WO2011120587A1 (en) 2010-04-01 2011-10-06 AlpiMed Sàrl Inductively operated fluid dispensing device
US8403888B2 (en) 2010-04-15 2013-03-26 Teneo Innovations Inc. Device and electronic controller for syringe piston control
US20140051564A1 (en) * 2011-03-29 2014-02-20 Emd Millipore Corporation Method and device for centrifugation and filtration
US20160243308A1 (en) * 2013-10-07 2016-08-25 Sio2 Medical Products, Inc. Convertible plungers, film coated plungers and related syringe assemblies
US20180060362A1 (en) * 2016-08-30 2018-03-01 Oracle International Corporation Method and system for implementing distributed lobs
US10918800B2 (en) 2016-05-31 2021-02-16 Sio2 Medical Products, Inc. Convertible plungers and methods for assembling the same in a medical barrel
WO2022039926A1 (en) * 2020-08-19 2022-02-24 Portal Instruments, Inc. Shuttle nib for control stopper during injection

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RU2452872C2 (en) * 2010-07-15 2012-06-10 Андрей Леонидович Кузнецов Piezoelectric pump
US9360440B2 (en) * 2013-03-15 2016-06-07 X-Ray Optical Systems, Inc. Non-homogeneous sample handling apparatus and X-ray analyzer applications thereof
JP2015226578A (en) * 2014-05-30 2015-12-17 株式会社 ユニフローズ Syringe
RU2667476C2 (en) * 2016-12-05 2018-09-20 Общество с Ограниченной Ответственностью "РЭНК" ООО "РЭНК" Stepper piezoelectric motor
RU2715881C2 (en) * 2017-07-26 2020-03-05 Общество с Ограниченной Ответственностью "ДИНАМИЧЕСКИЙ УРОВЕНЬ" (ООО "ДИНАМИЧЕСКИЙ УРОВЕНЬ") Stepping piezoelectric motor
RU2715880C2 (en) * 2017-07-26 2020-03-05 Общество с Ограниченной Ответственностью "ДИНАМИЧЕСКИЙ УРОВЕНЬ" (ООО "ДИНАМИЧЕСКИЙ УРОВЕНЬ") Stepping piezoelectric motor

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US6981854B1 (en) * 2003-06-05 2006-01-03 Chemilizer Products, Inc. Small piston pump
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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110216013A1 (en) * 2010-03-05 2011-09-08 Sony Ericsson Mobile Communications Ab Touch-sensitive input device, touch screen device, mobile device and method for operating a touch-sensitive input device
US8789727B2 (en) 2010-04-01 2014-07-29 Alpimed Sarl Inductively operated fluid dispensing device
WO2011120587A1 (en) 2010-04-01 2011-10-06 AlpiMed Sàrl Inductively operated fluid dispensing device
US8403888B2 (en) 2010-04-15 2013-03-26 Teneo Innovations Inc. Device and electronic controller for syringe piston control
US9566540B2 (en) * 2011-03-29 2017-02-14 Emd Millipore Corporation Method and device for centrifugation and filtration
US20140051564A1 (en) * 2011-03-29 2014-02-20 Emd Millipore Corporation Method and device for centrifugation and filtration
US20160243308A1 (en) * 2013-10-07 2016-08-25 Sio2 Medical Products, Inc. Convertible plungers, film coated plungers and related syringe assemblies
US10561795B2 (en) * 2013-10-07 2020-02-18 Sio2 Medical Products, Inc. Convertible plungers, film coated plungers and related syringe assemblies
US10918800B2 (en) 2016-05-31 2021-02-16 Sio2 Medical Products, Inc. Convertible plungers and methods for assembling the same in a medical barrel
US11896807B2 (en) 2016-05-31 2024-02-13 Sio2 Material Products, Inc Convertible plungers and methods for assembling the same in a medical barrel
US20180060362A1 (en) * 2016-08-30 2018-03-01 Oracle International Corporation Method and system for implementing distributed lobs
US11907251B2 (en) * 2016-08-30 2024-02-20 Oracle International Corporation Method and system for implementing distributed lobs
WO2022039926A1 (en) * 2020-08-19 2022-02-24 Portal Instruments, Inc. Shuttle nib for control stopper during injection
US11786666B2 (en) 2020-08-19 2023-10-17 Portal Instruments, Inc. Shuttle nib for control of stopper during injection

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JP2009097516A (en) 2009-05-07
EP2065062A1 (en) 2009-06-03

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