# US 10,765,401 B2 · Ultrasonic diagnostic device

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- Number: US 10,765,401 B2
- Document ID: US10765401B2
- Status: Granted
- Kind: B2
- Application number: 14/736,386
- Filed: 2015-06-11
- Published: 2015-12-17
- Granted: 2020-09-08
- Earliest claimed: 2014-06-12
- Assignees: Canon Medical Systems Corporation
- Applicants: Toshiba Medical Systems Corporation
- Inventors: Isao Uchiumi; Nobuyuki Iwama; Yasuo Miyajima; Hironobu Hongou; Takatoshi Okumura; Koichi Morikawa
- Web page: https://patentgrep.com/patent/US10765401B2

## CPC

- A61B 8/14: Echotomography
- A61B 8/5207: {involving processing of raw data to produce diagnostic data, e.g. for generating an image}
- A61B 8/54: {Control of the diagnostic device}
- A61B 8/4444: {related to the probe}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

An ultrasonic diagnostic device according to an embodiment includes an ultrasonic probe and transformer circuitry. The ultrasonic probe transmits ultrasonic waves to a subject and converts reflection waves reflected by the subject to a reflection wave signal. The transformer circuitry includes an auto transformer that transforms the reflection wave signal at a transformation ratio in accordance with a control signal based on information related to the ultrasonic probe among a plurality of transformation ratios.

## Claims

### Claim 1

An ultrasonic diagnostic device, comprising:
an ultrasonic probe configured to transmit ultrasonic waves to a subject and convert reflection waves reflected by the subject to a reflection wave signal;
transformer circuitry including an auto transformer configured to transform the reflection wave signal into a transformed reflection wave signal at a transformation ratio, which is determined in accordance with a control signal determined based on information related to the ultrasonic probe among a plurality of transformation ratios;
control signal transmission circuitry configured to transmit, to the transformer circuitry, the control signal, which is determined in accordance with a frequency which the ultrasonic probe is capable of handling; and
a switch provided at an input of the transformer circuitry, the switch being configured to switch whether the reflection wave signal is boosted by the transformer circuitry.

### Claim 2 (depends on 1)

The ultrasonic diagnostic device according to claim 1, further comprising limiter circuitry configured to limit a magnitude of an amplitude of the reflection wave signal transformed by the transformer circuitry.

### Claim 3 (depends on 2)

The ultrasonic diagnostic device according to claim 2, wherein
the limiter circuitry includes a first diode a cathode of which is connected to a transmission path through which the reflection wave signal flows and an anode of which is grounded and a second diode an anode of which is connected to the transmission path through which the reflection wave signal flows and a cathode of which is grounded, and
the transformer circuitry includes a capacitor provided at a position on the transmission path closer to the transformer circuitry relative to a position at which the first diode and the second diode are connected to the transmission path.

### Claim 4 (depends on 1)

The ultrasonic diagnostic device according to claim 1, wherein the control signal transmission circuitry transmits a signal for outputting the reflection wave signal without transforming the reflection wave signal as the control signal to the transformer circuitry, when a mode is specified in which image quality of an image based on the reflection wave signal is prioritized.

### Claim 5 (depends on 2)

The ultrasonic diagnostic device according to claim 2, wherein the control signal transmission circuitry transmits a signal for outputting the reflection wave signal without transforming the reflection wave signal as the control signal to the transformer circuitry, when a mode is specified in which image quality of an image based on the reflection wave signal is prioritized.

### Claim 6 (depends on 3)

The ultrasonic diagnostic device according to claim 3, wherein the control signal transmission circuitry transmits a signal for outputting the reflection wave signal without transforming the reflection wave signal as the control signal to the transformer circuitry, when a mode is specified in which image quality of an image based on the reflection wave signal is prioritized.

### Claim 7 (depends on 1)

The ultrasonic diagnostic device according to claim 1, wherein the ultrasonic probe is a high-frequency probe and the frequency that the ultrasonic probe is configured to handle is equal to or higher than 7 MHz.