Fluid transport driving unit and computer readable medium

• US 9,320,852 B2
• Filed: 07/08/2013
• Issued: 04/26/2016
• Est. Priority Date: 07/28/2011
• Status: Active Grant

• Current Assignee: Primetech Corporation
• Original Assignee: Primetech Corporation
• Inventors: Ogihara, Ryosuke
• Primary Examiner(s): Price, Nathan R
• Assistant Examiner(s): LEE, WENG WAH
• Application Number:
  US13/937,147
• Publication Number:
  US 20130296774A1
• Time in Patent Office: 1,023 Days
• Field of Search: 604/131, 604/151
• US Class Current: 1/1
• CPC Class Codes: A61M 2005/14268 with a reusable and a disposable component
• CPC Class Codes: A61M 2205/12 with interchangeable cassettes forming partially or totally the fluid circuit
• CPC Class Codes: A61M 2205/3569 sublocal, e.g. between console and disposable
• CPC Class Codes: A61M 5/14228 with linear peristaltic action, i.e. comprising at least three pressurising members or a helical member
• CPC Class Codes: A61M 5/14232 Roller pumps
• CPC Class Codes: A61M 5/14244 adapted to be carried by the patient, e.g. portable on the body
• CPC Class Codes: A61M 5/16827 controlling delivery of multiple fluids, e.g. sequencing, mixing or via separate flow-paths infusion of multiple fluids without using a controller A61M5/1407
• CPC Class Codes: A61M 5/172 electrical or electronic A61M5/16804, A61M5/16831 take precedence
• CPC Class Codes: A61M 5/1723 using feedback of body parameters, e.g. blood-sugar, pressure measurement of body parameters A61B5/00
• CPC Class Codes: F04B 43/082 the tubular flexible member being pressed against a wall by a number of elements, each having an alternating movement in a direction perpendicular to the axes of the tubular member and each having its own driving mechanism
• CPC Class Codes: F04B 43/1261 the rollers being placed at the outside of the tubular flexible member
• CPC Class Codes: F04B 49/06 Control using electricity regulating by means of floats actuating electric switches F04B49/04

Abstract

There are cases where a fluid transport apparatus cannot accurately discharge a set discharge amount of fluid, due to individual differences in components of the fluid transport apparatus, such as the diameter of an opening of an elastic tube. Therefore, in a fluid transport apparatus including a fluid transport cartridge and a fluid transport driving unit that are separable from each other, the fluid transport driving unit comprises a driving section that causes a drive mechanism to operate to transport fluid filling a transport path of an attached fluid transport cartridge to a discharge opening of the transport path; a receiving section that receives a characteristic value measured in advance for each of a plurality of the fluid transport cartridges; and a control section that controls the driving section based on the characteristic values received by the receiving sections.

Claims

1. A fluid transport driving unit comprising:

a drive mechanism including a cam body;

a driving section that causes the drive mechanism to operate to transport fluid filling a transport path of a fluid transport cartridge to a discharge opening of the transport path;

a receiving section that receives a characteristic value from among a plurality of characteristic values respectively measured in advance for each of a plurality of the fluid transport cartridges, the characteristic values being correction values for correcting variation based on individual differences among elastic tubes forming the transport paths;

a control section that controls the driving section based on the characteristic value received by the receiving section; and

a position fixing member having a convex portion that protrudes from an attachment surface of the fluid transport driving unit and has an arc shape with a circle of the arc being centered on a rotational center of the cam body, wherein

the fluid transport cartridge is attachable to and detachable from the fluid transport driving unit,

the cam body protrudes from the attachment surface and moves a pressing pin of the fluid transport cartridge pressing the elastic tube from the outside,

when the fluid transport cartridge is attached to the fluid transport driving unit, the cam body is housed in a cam-housing opening of the fluid transport cartridge and the convex portion engages with a through-hole of the fluid transport cartridge such that the position fixing member fixes the position of the cam body relative to the pressing pin, and

the control section controls a rotation amount of the cam body based on the correction value.

2. The fluid transport driving unit according to claim 1, wherein

the characteristic values are correction values for correcting variation in discharge amount of the fluid with respect to a driving amount of the driving section.

3. The fluid transport driving unit according to claim 1, comprising a pressure sensor that measures pressure of the elastic tube.

4. The fluid transport driving unit according to claim 3, wherein

the control section controls the driving section based on output of the pressure sensor.

5. The fluid transport driving unit according to claim 1, comprising a biometric information acquiring section that acquires biometric information of a subject to which the fluid transport driving unit is attached, wherein

the control section controls the driving section based on the biometric information.

6. The fluid transport driving unit according to claim 1, comprising a communicating section that wirelessly acquires a setting condition for controlling the driving section, wherein

the control section controls the driving section based on the setting condition.

7. A non-transitory computer readable medium storing thereon a program for controlling a fluid transport driving unit, the program causing a computer to perform operations comprising:

receiving a characteristic value from among a plurality of characteristic values respectively measured in advance for each of a plurality of fluid transport cartridges, the fluid transport cartridges each being attachable to and detachable from the fluid transport driving unit and having a transport path and a discharge opening, and the characteristic values being correction values for correcting variation based on individual differences among elastic tubes forming the transport paths; and

controlling, based on the received characteristic value, a rotation amount of a cam body included in a drive mechanism of the fluid transport driving unit to move a pressing pin of an attached fluid transport cartridge pressing the elastic tube from the outside, which causes the drive mechanism to operate to transport fluid filling the transport path of the attached fluid transport cartridge to the discharge opening, wherein

each of the plurality of fluid transport cartridges includes a position fixing member having a convex portion that protrudes from an attachment surface of the fluid transport driving unit and has an arc shape with a circle of the arc being centered on a rotational center of the cam body, and

when a fluid transport cartridge is attached to the fluid transport driving unit, the cam body is housed in a cam-housing opening of the fluid transport cartridge and the convex portion engages with a through-hole of the fluid transport cartridge such that the position fixing member fixes the position of the cam body relative to the pressing pin.