A DEVICE FOR ADMINISTERING A FLUID PRODUCT

• US 20160368018A1
• Filed: 03/21/2014
• Published: 12/22/2016
• Est. Priority Date: 03/21/2014
• Status: Active Grant

• Current Assignee: Faulhaber Precistep SA
• Original Assignee: Faulhaber Precistep SA
• Inventors: MOSER, Yves, MONNIN, Jonas
• Granted Patent: US 10,086,399 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61M 5/31511 Piston or piston-rod constructions, e.g. connection of piston with piston-rod A61M5/5066 takes precedence
• CPC Class Codes: A61M 5/31513 Piston constructions to improve sealing or sliding
• CPC Class Codes: A61M 5/31515 Connection of piston with piston rod
• CPC Class Codes: B05B 11/02 Membranes or pistons acting on the contents inside the container, e.g. follower pistons
• CPC Class Codes: B05C 17/005 for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
• CPC Class Codes: B05C 17/00576 characterised by the construction of a piston as pressure exerting means, or of the co-operating container
• CPC Class Codes: B05C 5/02 the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
• CPC Class Codes: B23K 3/0638 for viscous material feeding, e.g. solder paste feeding B23K3/0623 takes precedence
• CPC Class Codes: B65D 83/0033 the piston being a follower-piston and the dispensing means comprising a hand-operated pressure-device at the opposite part of the container
• CPC Class Codes: G01F 11/021 of the piston type G01F11/04 takes precedence
• CPC Class Codes: H05K 3/3485 Applying solder paste, slurry or powder thick film methods for applying conductive paste or ink patterns H05K3/12

Abstract

A device for administering a fluid product, such as an industrial or a medical compound comprising: —a reservoir (18) in which a plunger (15) is axially movable; —an axially movable rod (16) on which a ferromagnetic rod connector (12) is attached, said ferromagnetic rod connector (12) being adapted for sliding cooperation within said reservoir (18); —wherein detachable mechanical connection between the plunger (15) and the ferromagnetic rod connector (12) is provided with a ferromagnetic plunger connector (13) attached to said plunger and a magnet (11), arranged for magnetic cooperation with said ferromagnetic connectors (12, 3) to provided a mechanical connection between the ferromagnetic connectors.

Claims

1. A device for administering a fluid product comprising:

a reservoir;

a plunger axially movable within said reservoir, said plunger comprising a ferromagnetic plunger connector;

an axially movable rod comprising a ferromagnetic rod connector;

a magnet, arranged for magnetic cooperation with said ferromagnetic connectors to provide a magnetic connection between the plunger connector and the rod connector.

2. A device according to claim 1, wherein said magnet is provided outside the reservoir.

3. A device according to claim 1, wherein said magnet is slidably movable along the reservoir.

4. A device according to of the claim 2, further comprising a guide element for guiding the displacement of said magnet along the reservoir.

5. A device according to claim 4, comprising a tube around said reservoir, said tube acting as said guide element.

6. A device according to claim 2, wherein said ferromagnetic plunger connector, said ferromagnetic rod connector and said magnet together establish a magnetic circuit, wherein said circuit can be interrupted by sliding said magnet along said reservoir in order to disconnect the ferromagnetic connectors.

7. A device according to claim 1, wherein said magnet comprises a permanent magnet.

8. A device according to claim 1, wherein said magnet comprises a coil.

9. A device according to claim 1, wherein said magnet is removable from said device.

10. A device according to claim 1, wherein said rod is rotatable relative to said reservoir and to said plunger.

11. A device according to claim 1, wherein said rod connector is provided with an extending head with reduced diameter.

12. A device according to claim 1, wherein the rod connector is attached to a threaded rod rotatably mounted into a fixed nut.

13. A device according to claim 1, further comprising an actuating module provided with a rotating stepper motor and a gear head.

14. A device according to claim 13, wherein the stepper motor and the gear head can slide into an inner volume of the actuating module, following the plunger motion.

15. Use of a device according to claim 1 for administering a glue, a lubricant, and/or a solder paste.

16. Use of a device according to claim 1 for administering a medical compound.

17. A process for administering a fluid product using a reservoir in which a plunger with a ferromagnetic plunger connector is axially movable, comprising the steps of:

providing an axially movable rod on which a ferromagnetic rod connector is attached;

inserting said movable rod into said reservoir, until said rod connector is in contact with said plunger connector;

placing at least one magnet into magnetic cooperation with the rod connector and with the plunger connector in order to provide a magnetic field connecting both connectors together;

using an actuating module to displace the plunger and thereby administrate said fluid;

removing said magnet from magnetic cooperation with said connectors;

disconnecting the two connectors from mutual cooperation;

removing the rod and rod connector from the administering device.

18. The method of claim 17, in which the compound is a medical compound and the administering module is a syringe.