Patents by Inventor Masaki Hiramatsu

Masaki Hiramatsu 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).

  • Injection equipment and medical liquid injecting system having same
    Patent number: 8790306
    Abstract: Provided is a injection equipment capable of alleviating the force required of a user to inject a medical liquid. A housing chamber S1 for extrusion and a housing chamber S2 for injection are mutually connected so that, when one of the chambers S1, S2 expands, the other one of the chambers contracts. As a result of switching a switching valve 9 to an open position in a state where at least a predetermined amount of the medical liquid is filled in the housing chamber S2, the housing chamber S2 for injection is contracted based on the expansion of the housing chamber S1 for extrusion according to the discharge pressure of the medical liquid pump 2 so as to deliver a predetermined amount of medical liquid.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: July 29, 2014
    Assignee: Daiken Iki Kanbushiki Kaisha
    Inventors: Keiichi Yamada, Masayuki Uruma, Masaki Hiramatsu
  • INJECTION EQUIPMENT AND MEDICAL LIQUID INJECTING SYSTEM HAVING SAME
    Publication number: 20120253283
    Abstract: Provided is a injection equipment capable of alleviating the force required of a user to inject a medical liquid. A housing chamber S1 for extrusion and a housing chamber S2 for injection are mutually connected so that, when one of the chambers S1, S2 expands, the other one of the chambers contracts. As a result of switching a switching valve 9 to an open position in a state where at least a predetermined amount of the medical liquid is filled in the housing chamber S2, the housing chamber S2 for injection is contracted based on the expansion of the housing chamber S1 for extrusion according to the discharge pressure of the medical liquid pump 2 so as to deliver a predetermined amount of medical liquid.
    Type: Application
    Filed: December 15, 2010
    Publication date: October 4, 2012
    Applicant: DAIKEN IKI KABUSHIKI KAISHA
    Inventors: Keiichi Yamada, Masayuki Uruma, Masaki Hiramatsu