公开(公告)号：US12036068B2

公开(公告)日：2024-07-16

申请号：US17416707

申请日：2020-01-07

Applicant: Hitachi, Ltd.

Inventor： Tomohiko Tanaka ,  Ryo Imai ,  Misaki Hiroshima ,  Kenichi Kawabata ,  Hiroshi Kuribara

IPC: A61B8/12 ,  A61B8/00 ,  A61B8/08 ,  A61B17/34

CPC classification number: A61B8/12 ,  A61B8/4218 ,  A61B8/445 ,  A61B8/4494 ,  A61B8/461 ,  A61B8/5207 ,  A61B8/54 ,  A61B17/3403 ,  A61B2017/3413

Abstract: In a transcatheter treatment support technique using a combination of a guide wire equipped with a photoacoustic technique and an ultrasonic imaging device, the ultrasonic imaging device estimates a front edge position of the guide wire using a difference between arrival times of photoacoustic waves arriving at an array of elements configuring an ultrasonic probe or a change of an image of the photoacoustic generation source, which depends on a distance of the photoacoustic generation source from an imaging region, and grasps a relationship between an imaging position and the front edge position of the guide wire using the estimation result. This enables visually grasping a relationship between a region (imaging region) from which an image is able to be obtained with reflective waves from a biological body with use of the ultrasonic probe and an insertion object present outside the region, particularly, the front edge of the guide wire.

公开(公告)号：US11317812B2

公开(公告)日：2022-05-03

申请号：US16223146

申请日：2018-12-18

Applicant: HITACHI, LTD.

Inventor： Shinsuke Onoe ,  Takahiro Matsuda ,  Yoshiho Seo ,  Satoshi Ouchi ,  Tomohiko Tanaka ,  Taiichi Takezaki ,  Ryo Imai

IPC: G01S17/08 ,  A61B5/00 ,  G02B26/10 ,  H01L41/04 ,  H01L41/09 ,  G01N29/24 ,  G01S7/481 ,  G02B26/08 ,  G01S17/89

Abstract: An optical scanning device includes: an optical scanning unit configured to repeatedly scan an irradiation destination of irradiation light to a predetermined trajectory; a light emission control unit configured to control light emission of the irradiation light to irradiate irradiation points to the predetermined trajectory; and a driving signal generation unit configured to generate a driving signal for driving the optical scanning unit, wherein the light emission control unit irradiates the irradiation points to the predetermined trajectory so that the irradiation points are substantially uniformly dispersed in a region in which a density of the irradiation points is relatively low in a region in which the irradiation light is irradiated.

公开(公告)号：US11986270B2

公开(公告)日：2024-05-21

申请号：US17215187

申请日：2021-03-29

Applicant: Hitachi, Ltd.

Inventor： Tomohiko Tanaka ,  Teiichiro Ikeda ,  Ryo Imai ,  Hirozumi Takeshima

IPC: A61B5/00 ,  A61B90/00 ,  A61B90/50 ,  A61N7/00 ,  B06B1/06

CPC classification number: A61B5/0095 ,  A61B90/37 ,  A61B90/50 ,  A61N7/00 ,  B06B1/06 ,  A61B2090/378 ,  A61N2007/0043

Abstract: Provided are an ultrasound imaging apparatus and a surgical operation support system for obtaining position information of a device outside an imaging area and presenting the position information to a user together with an ultrasound image. The surgical operation support system includes the ultrasound imaging apparatus, an ultrasonic source fixed to a therapeutic tool to be inserted into a subject body, a display device for displaying the ultrasound image and the position of the ultrasonic source. The ultrasound imaging apparatus is provided with a position estimator for estimating the position information of the ultrasonic source, and the position estimator analyzes a grating lobe artifact (false image) that is generated by the ultrasonic wave emitted from the ultrasonic source outside the imaging area, to estimate the position information of the ultrasonic source with respect to the imaging area.

公开(公告)号：US20240065556A1

公开(公告)日：2024-02-29

申请号：US18504471

申请日：2023-11-08

Applicant: Hitachi, Ltd. ,  FUJIFILM Healthcare Corporation

Inventor： Ryo Imai ,  Tomohiko Tanaka

IPC: A61B5/00 ,  A61B8/08 ,  B06B1/04 ,  G10K11/28

CPC classification number: A61B5/0095 ,  A61B8/0833 ,  B06B1/04 ,  G10K11/28 ,  G02B6/10

Abstract: To provide an ultrasonic transmission instrument that can uniformly transmit ultrasonic waves in each direction around the instrument, even when the instrument is made of a material through which the ultrasonic waves cannot be transmitted. In an ultrasonic transmission instrument according to the invention, a light transmission member is disposed at an emission end of an optical waveguide, and an outer peripheral member covers an outer periphery of the light transmission member and is made of a light absorbing material.

公开(公告)号：US11844587B2

公开(公告)日：2023-12-19

申请号：US16860556

申请日：2020-04-28

Applicant: HITACHI, LTD.

Inventor： Ryo Imai ,  Tomohiko Tanaka

IPC: A61B8/08 ,  G01N29/24 ,  A61B5/00 ,  B06B1/04 ,  G10K11/28 ,  G02B6/10

CPC classification number: A61B5/0095 ,  A61B8/0833 ,  B06B1/04 ,  G10K11/28 ,  B06B2201/76 ,  G01N29/2418 ,  G02B6/10

Abstract: To provide an ultrasonic transmission instrument that can uniformly transmit ultrasonic waves in each direction around the instrument, even when the instrument is made of a material through which the ultrasonic waves cannot be transmitted. In an ultrasonic transmission instrument according to the invention, a light transmission member is disposed at an emission end of an optical waveguide, and an outer peripheral member covers an outer periphery of the light transmission member and is made of a light absorbing material.

公开(公告)号：US11369273B2

公开(公告)日：2022-06-28

申请号：US16883335

申请日：2020-05-26

Applicant: Hitachi, Ltd.

Inventor： Ryo Imai ,  Tomohiko Tanaka

IPC: A61B5/00 ,  G02B6/38 ,  G02B6/42

Abstract: Provided is a guidewire connector that does not interfere with an introduction of another in-body insertion instrument and is capable of maintaining cleanliness of the guidewire when connecting a guidewire mounted with a photo-acoustic ultrasonic wave generator. The guidewire connector according to the present disclosure includes an adapter member detachably attached to an light emitting apparatus, and a wire fixing member attaching the guidewire to the adapter member, in which the wire fixing member has an outer diameter equal to or smaller than an outer diameter of the guidewire.

公开(公告)号：US09978004B2

公开(公告)日：2018-05-22

申请号：US15540362

申请日：2015-05-19

Applicant: HITACHI, LTD.

Inventor： Takao Watanabe ,  Shigeki Mori ,  Ryo Imai ,  Koichi Watanabe

IPC: B23K26/53 ,  G06K15/12 ,  G06K1/12 ,  B41M3/00 ,  G06K15/02

CPC classification number: G06K15/1276 ,  B23K26/0006 ,  B23K26/032 ,  B23K26/0624 ,  B23K26/0853 ,  B23K26/53 ,  B23K26/55 ,  B23K26/702 ,  B23K2103/54 ,  B41M3/00 ,  B41M5/26 ,  G06K1/121 ,  G06K15/023 ,  G06K15/1271 ,  G06K19/06037 ,  G06K19/06178

Abstract: It is an object of the present invention to improve visibility for observation with naked eyes or for camera shooting without spoiling the appearance during marking inside a transparent medium using a laser. By irradiating an inside of a transparent medium with a laser, the present invention forms a micro-denatured region in each of a first layer and a second layer inside the medium. The micro-denatured regions in the respective layers are arranged out of alignment with each other on a two-dimensional plane (refer to FIG. 1).

公开(公告)号：US09773521B2

公开(公告)日：2017-09-26

申请号：US15106879

申请日：2014-01-17

Applicant: HITACHI, LTD.

Inventor： Ryo Imai ,  Koichi Watanabe ,  Manabu Shiozawa

IPC: G11B7/1372 ,  G11B7/128 ,  G11C13/04 ,  G11B7/0045 ,  G11B7/0065 ,  G11B7/127 ,  G11B7/007 ,  G11B7/00 ,  G11B7/0033

CPC classification number: G11B7/128 ,  G11B7/0033 ,  G11B7/0045 ,  G11B7/0065 ,  G11B7/00772 ,  G11B7/127 ,  G11B7/1372 ,  G11B2007/0009 ,  G11C13/04

Abstract: In recording technologies for batch formation of a plurality of recording bits in a recording medium by forming a plurality of optical spots using an ultrashort pulse laser and a spatial optical modulator, the batch recordable bit number has an upper limit, resulting in restricted recording speed. The intensity of the optical spot is corrected to increase the batch recordable bit number for increasing the recording speed.

公开(公告)号：US20240009667A1

公开(公告)日：2024-01-11

申请号：US18335246

申请日：2023-06-15

Applicant: HITACHI, LTD.

Inventor： Saaya Shimizu ,  Ryo Imai ,  Yoshimitsu Yanagawa

IPC: B01L3/00 ,  B01L9/00

CPC classification number: B01L3/502715 ,  B01L3/50273 ,  B01L9/527 ,  B01L2200/027 ,  B01L2200/0605 ,  B01L2200/0689 ,  B01L2200/143 ,  B01L2400/0406 ,  B01L2400/0481

Abstract: Provided is a liquid feeding method for removing bubbles from a solution introduced into a fluidic device, wherein: the fluidic device includes a flow path of a volume v, a first chamber having a volume V1 and connected to a first side of the flow path, and a second chamber having a volume V2 and connected to a second side, being different from the first side, of the flow path; V1, V2, and v satisfy Formula (1) and Formula (2), α is a solubility of gas in the solution at a temperature of the second chamber, β is a solubility of gas in the solution at a temperature of the flow path, P0 is a pressure of a surrounding environment of the fluidic device, ΔP is a bubble internal pressure rise value, where ΔP=4σ/d, σ is a surface tension of the solution, and d is a diameter of the flow path; and the liquid feeding method includes: disposing the solution at a first position opposite to the flow path with respect to the second chamber; pressurizing and feeding the solution so that the solution is transferred through the second chamber toward the flow path; and pressurizing and introducing the solution from the second chamber into the flow path.