SYRINGE DRIVE DEVICE

• US 20120016303A1
• Filed: 03/23/2010
• Published: 01/19/2012
• Est. Priority Date: 04/14/2009
• Status: Active Grant

• Current Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: Nakamura, Tohru, Mizuno, Osamu, Fujioka, Soichiro, Okuda, Akinobu, Tojo, Tsuyoshi, Ohta, Akihiro
• Granted Patent: US 8,647,305 B2
• Time in Patent Office: Days
• US Class Current: 604/131
• CPC Class Codes: A61M 2005/1403 Flushing or purging
• CPC Class Codes: A61M 5/007 for contrast media
• CPC Class Codes: A61M 5/1407 Infusion of two or more substances
• CPC Class Codes: A61M 5/14546 Front-loading type injectors
• CPC Class Codes: A61M 5/1456 with a replaceable reservoir comprising a piston rod to be moved into the reservoir, e.g. the piston rod is part of the removable reservoir
• CPC Class Codes: A61M 5/1782 Devices aiding filling of syringes in situ combination of a vial and a syringe for transferring or mixing their contents A61J1/2096, filling of medical containers in general B65B3/003

Abstract

A syringe drive device drives a syringe including a cylindrical cylinder and a piston. The cylinder includes a solution supply port at one end, and an opening at the other end. The piston is inserted into the cylinder through the opening. The syringe drive device includes a cylinder holder to rotatably hold the cylinder of the syringe, and a piston driver to drive the piston in its axial direction with respect to the cylinder held in the cylinder holder.

Claims

1-10. -10. (canceled)

11. A syringe drive device to hold and drive a syringe, the syringe including a cylinder and a piston inserted in the cylinder, the cylinder having a solution supply port at an eccentric position, the syringe drive device comprising:

a cylinder holder to hold the cylinder such that the cylinder can rotate around a plane perpendicular to a shaft of the cylinder;

a rotation aid to rotate the cylinder held in the cylinder holder by a predetermined angle around an axis of the cylinder; and

a piston driver to drive the piston in an axial direction thereof with respect to the cylinder held in the cylinder holder.

12. The syringe drive device of claim 11, wherein

the rotation aid vertically flips the eccentric position of the solution supply port of the cylinder by rotating the cylinder held in the cylinder holder by 180 degrees around the axis.

13. The syringe drive device of claim 11, wherein

the cylinder holder includes a hold-down bar in an upper part thereof;

at least one roller is located in a recess formed in the cylinder holder; and

the at least one roller is located on a bottom surface of the hold-down bar facing the cylinder holder.

14. The syringe drive device of claim 11, wherein

the cylinder is held in the cylinder holder with a gear provided near a flange of the cylinder.

15. The syringe drive device of claim 14, further comprising:

an operating rod near the cylinder holder, the operating rod rotating the cylinder to be engaged with the gear provided in the cylinder.

16. The syringe drive device of claim 11, wherein

the cylinder includes a gear provided on an outer periphery of a flange, the syringe drive device further comprising:

an operating rod to rotate the cylinder to be engaged with the gear provided on the outer periphery of the flange of the cylinder.

17. The syringe drive device of claim 15, wherein

the hold-down bar and the operating rod are slidably provided in an upper part of the cylinder holder.

18. The syringe drive device of claim 11, wherein

an operation button of a locking part to prevent rotation of the cylinder is disposed under the piston driver.

19. The syringe drive device of claim 11, wherein

the cylinder holder includes a locking part to prevent rotation of the cylinder.