Patent application number | Description | Published |
20120148429 | FLUID CONVEYING DEVICE AND DRIVING METHOD FOR FLUID CONVEYING DEVICE - A fluid conveying device includes: a tube; a cam having protrusions; fingers arranged along the tube between the tube and the cam; a driving rotor which rotates the cam to sequentially push the fingers by the protrusions in a flowing direction of a fluid, repeatedly pressuring and opening of the tube, driving the cam; a detection unit which detects a rotating position of the cam; a control unit which calculates a cam rotation angle along a cumulative ejection volume, using a first approximation formula for an ejection area H where the cumulative ejection volume increases substantially in proportion to the rotation angle of the cam and a second approximation formula for a constant area J where the cumulative ejection volume little increases or decreases even if the cam rotates, driving the driving rotor until a rotating position of the cam corresponding to a designated cumulative ejection volume is reached. | 06-14-2012 |
20130294955 | FLUID TRANSPORTING APPARATUS AND FLUID TRANSPORTING METHOD - A fluid transporting apparatus includes a plurality of fingers arranged along a transporting direction in which fluid is transported by a tube having elasticity, the fingers reciprocatingly moving to compress or release the tube, and a driving section configured to move the plurality of fingers in a compressing direction. The fingers move in the compressing direction and crush the tube with ends of the fingers to transport the fluid on the inside of the tube in the transporting direction. The shape of the crushed tube is restored to fill the fluid in the inside of the tube. In a releasing action, in a state in which the ends of the fingers are in contact with the tube, movement of the fingers in a releasing direction is limited to a predetermined position. | 11-07-2013 |
20140116110 | LIQUID TRANSPORT APPARATUS AND BUBBLE DETERMINATION METHOD - A liquid transport apparatus includes a tube for transporting a liquid, plural fingers that push and block the tube, a cam that pushes the fingers in sequence so as to squeeze the tube to transport the liquid, a first electrode and a second electrode that are provided at the tube located further toward the downstream side than a region pushed by the plural fingers, and a determination unit that determines the presence/absence of a bubble on the basis of the impedance between the first electrode and the second electrode. | 05-01-2014 |
20140121598 | LIQUID TRANSPORT APPARATUS AND CATHETER COMING-OFF DETERMINATION METHOD - A liquid transport apparatus includes a tube for constituting a flow channel transporting a liquid, plural fingers that push and block the tube, a cam that pushes the fingers in sequence so as to squeeze the tube to transport the liquid, a catheter for injecting the liquid into a living body, a first electrode that is provided further toward the downstream side than a region pushed by the plural fingers and is made to come into contact with the liquid, a second electrode made to come into contact with the living body, and a determination unit that determines that the catheter comes off the living body on the basis of the impedance between the first electrode and the second electrode. | 05-01-2014 |
20140276380 | LIQUID TRANSPORTING APPARATUS AND LIQUID TRANSPORTING METHOD - A liquid transporting apparatus includes: a driving section that transports a liquid through a transporting tube for transporting the liquid; a catheter that injects the liquid that is transported into a living body; a determination section that determines whether the catheter detaches from the living body; and an operation section that is operated when the determination is started, in which if it is determined that the catheter detaches from the living body when the operation section is pressed, the transporting tube is filled with the liquid, and in which if it is determined that the catheter does not detaches from the living body when the operation section is operated, the liquid is transported. | 09-18-2014 |
20150112268 | FLUID INFUSER - A fluid infuser includes an introduction needle having a projection on a peripheral surface, and an infusion tube configured to cover the introduction needle. The projection of the introduction needle is installed at a position where the introduction needle comes into contact with the infusion tube, and includes a first surface and a second surface. The first surface is arranged at a picking end side of the introduction needle with respect to the second surface, and an angle of inclination of the first surface is larger than an angle of inclination of the second surface. The fluid infuser is configured to guide an infusion tube to an object of insertion adequately, and allow the introduction needle to be pulled out easily from the infusion tube. | 04-23-2015 |
20150112305 | FLUID TRANSPORT APPARATUS, FLUID INFUSING APPARATUS, AND TROUBLE DETERMINING METHOD FOR TRANSPORTING TUBE - A fluid transport apparatus includes: a first electrode provided on the insulating transporting tube which constitutes part of a flow channel in which conductive fluid is transported, and configured not to come into contact with the fluid in the flow channel a second electrode configured to come into contact with fluid in the flow channel; and a determining unit connected to the first electrode and the second electrode, and configured to determine a trouble of the transporting tube. Accordingly, the trouble of the transporting tube is determined. | 04-23-2015 |
20150125316 | FLUID CONVEYING DEVICE AND DRIVING METHOD FOR FLUID CONVEYING DEVICE - A fluid conveying device includes: a tube; a cam having protrusions; fingers arranged along the tube between the tube and the cam; a driving rotor which rotates the cam to sequentially push the fingers by the protrusions in a flowing direction of a fluid, repeatedly pressuring and opening of the tube, driving the cam; a detection unit which detects a rotating position of the cam; a control unit which calculates a cam rotation angle along a cumulative ejection volume, using a first approximation formula for an ejection area H where the cumulative ejection volume increases substantially in proportion to the rotation angle of the cam and a second approximation formula for a constant area J where the cumulative ejection volume little increases or decreases even if the cam rotates, driving the driving rotor until a rotating position of the cam corresponding to a designated cumulative ejection volume is reached. | 05-07-2015 |