DISPENSING CYLINDER, LARGE CAPACITY DISPENSING DEVICE AND METHOD OF USING LARGE CAPACITY DISPENSING DEVICE

• US 20110215118A1
• Filed: 04/18/2011
• Published: 09/08/2011
• Est. Priority Date: 04/15/2003
• Status: Abandoned Application

• Current Assignee: Universal Bio Research Co., Ltd (Precision System Science Co., Ltd)
• Original Assignee: Universal Bio Research Co., Ltd (Precision System Science Co., Ltd)
• Inventors: Hirahara, Yoshinao, TAJIMA, Hideji
• Application Number:
  US13/089,111
• Publication Number:
  US 20110215118A1
• Time in Patent Office: Days
• US Class Current: 222/386
• CPC Class Codes: G01N 35/0098 involving analyte bound to insoluble magnetic carrier, e.g. using magnetic separation magnetic particles used in immunoassays G01N33/54326; magnetic separation in general B03C
• CPC Class Codes: G01N 35/10 Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices G01N35/0099 takes precedence
• CPC Class Codes: G01N 35/1065 Multiple transfer devices
• CPC Class Codes: Y10T 436/2575 Volumetric liquid transfer

Abstract

The invention relates to a dispensing cylinder, a large capacity dispensing device, and a method of using a large capacity dispensing device, and aims at providing a dispensing cylinder, a large capacity dispensing device, and a method of using a large capacity dispensing device, with high quantitativity and capable of suppressing the scale of the device and efficiently utilizing working space, despite the relatively large volumes of fluid handled. The construction comprises: a small diameter section, a large diameter section which communicates with the small diameter section and is capable of holding fluids, a sliding section provided in a slidable manner within the large diameter section which enables fluid to be sucked and discharged to and from the large diameter section through the small diameter section, and a connection section which connects the sliding section in a detachable manner to a suction and discharge mechanism which drives the sliding section.

Claims

1. A dispensing cylinder comprising:

a small diameter section, a large diameter section which communicates with said small diameter section and is capable of holding fluids, a sliding section provided in a slidable manner within said large diameter section which enables fluid to be sucked and discharged to and from said large diameter section through said small diameter section, and a connection section which connects said sliding section in a detachable manner to a suction and discharge mechanism which drives said sliding section.

2. A dispensing cylinder according to claim 1, wherein said sliding section comprises;

a piston which slides inside said large diameter section, and a rod, one end of which is secured to said piston, and said connection section is provided at the other end of said rod.

3. A dispensing cylinder according to claim 2, wherein an engagement section is provided on the outside of said small diameter section of said dispensing cylinder so as to surround the top of said small diameter section, and an opening of a sheath which covers said small diameter section, is fitted to said engagement section.

4. A dispensing cylinder according to claim 1, wherein an engagement section is provided on the outside of said small diameter section of said dispensing cylinder so as to surround the top of said small diameter section, and an opening of a sheath which covers said small diameter section, is fitted to said engagement section.

5. A dispensing cylinder comprising:

a small diameter section, a large diameter section which communicates with said small diameter section and is capable of holding fluids, a sliding section provided in a slidable manner within said large diameter section which enables fluid to be sucked and discharged to and from said large diameter section through said small diameter section, and a connection section which connects said sliding section in a detachable manner to a suction and discharge mechanism which drives said sliding section;

wherein the sliding section comprises;

a disk-shaped piston which slides inside the large diameter section;

a rod, one end of which is secured to the piston, wherein the connection section is provided at the other end of the rod; and

a tube supported by an end of the large diameter section that axially opposes the small diameter section, the tube having a diameter and being positioned, relative to the rod, such that;

the rod passes through the inside of the tube,

relative axial movement between the rod and the tube is permitted,

the rod is substantially axially aligned with the large diameter section at the end of the large diameter section that axially opposes the small diameter section, and

the tube is axially positioned between the piston and the connection section and thereby prevents the piston from exiting the large diameter section through the end of the large diameter section that axially opposes the small diameter section.

6. A dispensing cylinder according to claim 5, wherein an engagement section is provided on the outside of said small diameter section of said dispensing cylinder so as to surround the top of said small diameter section, and an opening of a sheath which covers said small diameter section, is fitted to said engagement section.