Patents by Inventor Ryoichi Akai

Ryoichi Akai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11331426
    Abstract: An infusion pump includes: infusion-tube pressing parts configured to press a flexible infusion tube; an infusion-tube receiving surface configured to serve as a receiving surface when the infusion-tube pressing parts press the infusion tube; and a restoration device provided between the infusion-tube pressing parts, the restoration device being configured to move together with the infusion-tube pressing parts along the infusion-tube receiving surface and to press two sides of the infusion tube pressed by the infusion-tube pressing parts, wherein the infusion-tube pressing parts is configured to move sequentially in a longitudinal direction of the infusion tube along the infusion-tube receiving surface to deliver a liquid in the infusion tube in one direction while pressing the infusion tube by sandwiching the infusion tube with the infusion-tube receiving surface.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: May 17, 2022
    Assignees: ICOMES LAB Co., Ltd., NITRO CORPORATION
    Inventors: Katsuya Kono, Ryoichi Akai, Shinji Akitomi
  • Publication number: 20200289749
    Abstract: A droplet measurement system, etc. is provided that is capable of measuring the volume of a droplet with high precision by means of image processing with a lighter arithmetic load than before.
    Type: Application
    Filed: November 11, 2016
    Publication date: September 17, 2020
    Inventors: Naoyuki ODASHIMA, Tadataka KAMIYAMA, Isao OHWADA, Harumi SANGAWA, Ryoichi AKAI
  • Publication number: 20200139044
    Abstract: An infusion pump includes: infusion-tube pressing parts configured to press a flexible infusion tube; an infusion-tube receiving surface configured to serve as a receiving surface when the infusion-tube pressing parts press the infusion tube; and a restoration device provided between the infusion-tube pressing parts, the restoration device being configured to move together with the infusion-tube pressing parts along the infusion-tube receiving surface and to press two sides of the infusion tube pressed by the infusion-tube pressing parts, wherein the infusion-tube pressing parts is configured to move sequentially in a longitudinal direction of the infusion tube along the infusion-tube receiving surface to deliver a liquid in the infusion tube in one direction while pressing the infusion tube by sandwiching the infusion tube with the infusion-tube receiving surface.
    Type: Application
    Filed: March 22, 2018
    Publication date: May 7, 2020
    Inventors: Katsuya KONO, Ryoichi AKAI, Shinji AKITOMI
  • Patent number: 9463275
    Abstract: An infusion pump has a primary finger with an inclined surface, which is obliquely inclined to an advancing and retracting direction, and a secondary finger with an inclined surface, which is slidable relative to the inclined surface of the primary finger. When the primary finger is advanced, the secondary finger is retracted in proportion to the variation (increasing) in an entire width of an infusion tube, and when the primary finger is retracted, the secondary finger is advanced in proportion the variation (decreasing) in the entire width of the infusion tube. This configuration can suppress the occurrence of any gap between a tip surface of the secondary finger and an outer peripheral surface of the infusion tube in the advancing and retracting process of the primary finger. Consequently, this prevents the infusion tube from meandering, and suppresses the reduction in the accuracy of the rate of infusion.
    Type: Grant
    Filed: September 11, 2012
    Date of Patent: October 11, 2016
    Assignee: NIPRO CORPORATION
    Inventors: Mitsutaka Ueda, Ryoichi Akai, Hidenori Takahashi
  • Patent number: 9022983
    Abstract: An infusion pump includes a pump body for holding a roller clamp 7, and a roller movement mechanism 3 for moving a roller 72 of the roller clamp 7 and operating in coordination with manipulation of a door lock mechanism. When the door lock mechanism is in an unlocked state, an infusion tube T is blocked by the roller clamp 72. This configuration reliably prevents free flow even if a door is not closed completely or if the door is accidentally left unlocked. After the finish of infusion treatment, the infusion tube T is blocked by the roller clamp 7 at the moment when the door lock mechanism is unlocked before the opening of the door. This configuration avoids a trouble of removing the infusion tube T from the infusion pump while a user forgets to block the infusion tube by the roller clamp 7.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: May 5, 2015
    Assignee: Nipro Corporation
    Inventors: Mitsutaka Ueda, Ryoichi Akai, Hidenori Takahashi
  • Publication number: 20140243745
    Abstract: An infusion pump has a primary finger with an inclined surface, which is obliquely inclined to an advancing and retracting direction, and a secondary finger with an inclined surface, which is slidable relative to the inclined surface of the primary finger. When the primary finger is advanced, the secondary finger is retracted in proportion to the variation (increasing) in an entire width of an infusion tube, and when the primary finger is retracted, the secondary finger is advanced in proportion the variation (decreasing) in the entire width of the infusion tube. This configuration can suppress the occurrence of any gap between a tip surface of the secondary finger and an outer peripheral surface of the infusion tube in the advancing and retracting process of the primary finger. Consequently, this prevents the infusion tube from meandering, and suppresses the reduction in the accuracy of the rate of infusion.
    Type: Application
    Filed: September 11, 2012
    Publication date: August 28, 2014
    Inventors: Mitsutaka Ueda, Ryoichi Akai, Hidenori Takahashi
  • Publication number: 20140100526
    Abstract: An infusion pump includes a pump body for holding a roller clamp 7, and a roller movement mechanism 3 for moving a roller 72 of the roller clamp 7 and operating in coordination with manipulation of a door lock mechanism. When the door lock mechanism is in an unlocked state, an infusion tube T is blocked by the roller clamp 72. This configuration reliably prevents free flow even if a door is not closed completely or if the door is accidentally left unlocked. After the finish of infusion treatment, the infusion tube T is blocked by the roller clamp 7 at the moment when the door lock mechanism is unlocked before the opening of the door. This configuration avoids a trouble of removing the infusion tube T from the infusion pump while a user forgets to block the infusion tube by the roller clamp 7.
    Type: Application
    Filed: May 22, 2012
    Publication date: April 10, 2014
    Inventors: Mitsutaka Ueda, Ryoichi Akai, Hidenori Takahashi