Abstract: A cell peeling device includes a vibrator that emits an ultrasonic beam onto a cell aggregate across a container wall, a movement mechanism that moves the vibrator to shift a position thereof relative to a culture container, and a control unit that controls beam power output of the ultrasonic beam and the position of the vibrator, in which the control unit carries out mode switching of switching the beam power output of the ultrasonic beam between a first mode in which the cell aggregate is cut and a second mode in which a peeling portion of the cell aggregate, the peeling portion being formed in the first mode, is peeled from the container wall, and, in the first mode, makes a beam size of the beam power output smaller than a beam size in the second mode while makes an intensity of the beam power output larger than an intensity in the second mode.

Abstract: Provided is a liquid droplet generation method capable of generating liquid droplets having a diameter of 100 µm or more. The liquid droplet generation method for generating liquid droplets from a liquid layer 20 by using a plurality of transducers 18, the method including irradiating the liquid layer 20 with a plurality of ultrasonic waves from the plurality of transducers 18 to scatter primary liquid droplets 21A and 21B from the liquid layer 20, and causing the primary liquid droplets 21A and 21B being scattered to aggregate and grow into a secondary liquid droplet 22A.

Abstract: The present invention provides a chemical analyzer with highly reliable agitation performance, said chemical analyzer not only diagnosing the deterioration of a piezoelectric element, but also diagnosing the deformation and displacement of a reaction container and diagnosing the normality of the liquid quantity of a substance to be agitated in the reaction container. This chemical analyzer is characterized by comprising: an agitating mechanism that uses acoustic waves to agitate a sample and a reagent within a reaction container, generates acoustic waves using a piezoelectric element, and has an acoustic wave sensor for detecting the acoustic waves; and a controller that controls the agitating mechanism.

Abstract: This chemical analysis device is provided with: a plurality of ultrasonic elements; a waveform generator which generates an ultrasonic waveform; a determiner which determines the positions and the number of ultrasonic elements to be driven from among the plurality of ultrasonic elements; a variable matching circuit which, on the basis of the determination result, matches impedance between the waveform generator and each of the ultrasonic elements to be driven; and a switch which selects the ultrasonic elements to be driven from among the plurality of the ultrasonic elements.

Abstract: To provide a position measurement device capable of measuring a target position with high accuracy according to an ultrasonic image during treatment, a treatment system including the device, and a position measurement method. A first image is constructed according to an ultrasonic waveform acquired by an ultrasonic sensor 104C, a three-dimensional image acquired in advance and the first image are collated on the basis of sensor position information acquired by a sensor position measurement unit 105 to calculate sound velocities of each body tissue of a patient 100, a second image is constructed according to the ultrasonic waveform acquired by the ultrasonic sensor 104C using the calculated sound velocities of each body tissue of the patient 100, and a target tissue position is calculated according to the second image.

Abstract: The present invention provides a body tissue location measurement system in which a wide range and clear ultrasonic image can be obtained without distortion due to respiration through the effective use of an ultrasonic element. The system identifies a location of a target body tissue by means of ultrasonic waves and includes: ultrasonic elements closely attached to different parts of a body surface; and an external sensor for measuring a position of the ultrasonic elements. An ultrasonic propagation time is calculated based on a stored ultrasonic model and the ultrasonic element position. Further, an ultrasonic image is configured from the ultrasonic propagation time and an ultrasonic signal that is received from each element. Then, a target body tissue location is calculated from the ultrasonic image.