Guidewire connector and ultrasonic imaging apparatus

Patent metadata

Field	Value
Publication number	US-11369273-B2
Application number	US-202016883335-A
Country	US
Kind code	B2
Filing date	May 26, 2020
Priority date	Jul 18, 2019
Publication date	Jun 28, 2022
Grant date	Jun 28, 2022

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.

First claim

What is claimed is:

1. A guidewire connector that connects an apparatus configured to emit light and a guidewire configured to guide an in-body insertion instrument, in which
a first optical fiber that receives the light is disposed along the guidewire,
the guidewire connector comprising:
an adapter member detachably attached to the apparatus; and
a wire fixing member configured to fix the guidewire to the adapter member, wherein
the wire fixing member has an outer diameter equal to or smaller than an outer diameter of the guidewire.

2. The guidewire connector according to claim 1 , wherein
the adapter member includes a first hollow portion into which the guidewire is inserted,
the wire fixing member includes a first fixing mechanism protruding from an inner wall of the adapter member toward the first hollow portion, and
an inner diameter of the first hollow portion defined by the inner wall of the adapter member and a tip end of the first fixing mechanism is equal to or smaller than an outer diameter of the guidewire.

3. The guidewire connector according to claim 2 , wherein
the wire fixing member includes a clasp having a second hollow portion through which the first optical fiber passes,
the clasp has a recess to be fitted with the first fixing mechanism, and
an outer diameter of the recess is equal to or smaller than the outer diameter of the guidewire.

4. The guidewire connector according to claim 3 , wherein
the first fixing mechanism includes an elastic member protruding from an inner wall of the wire fixing member toward the first hollow portion, and
when the guidewire is inserted into the first hollow portion, the elastic member fixes the guidewire to the adapter member by pressing the first fixing mechanism to the recess in accordance with elastic force.

5. The guidewire connector according to claim 3 , wherein
the recess is formed so as to be rotationally symmetric about a rotation axis extending along a longitudinal direction of the guidewire, and
the wire fixing member fixes the guidewire such that the guidewire can be rotated along the rotation axis by fitting the first fixing mechanism and the recess.

6. The guidewire connector according to claim 1 , wherein
the wire fixing member fixes the guidewire such that the guidewire can be rotated along a rotation axis extending along a longitudinal direction of the guidewire.

7. The guidewire connector according to claim 1 , wherein
the wire fixing member is configured using a magnetic material that fixes the guidewire to the adapter member by magnetic force.

8. The guidewire connector according to claim 1 , wherein
the adapter member includes a bag configured to avoid contact between a non-clean site and a clean site.

9. The guidewire connector according to claim 1 , further comprising:
a lens configured to converge the light to a light introducing end of the first optical fiber.

10. The guidewire connector according to claim 1 , wherein
the wire fixing member is configured to be capable of fixing two of the guidewires or more to the adapter member respectively, and
the adapter member includes a second fixing mechanism configured to fix a rotational position of the adapter member to the apparatus.

11. The guidewire connector according to claim 1 , wherein the adapter member includes
a second optical fiber configured to propagate the light, and
an optical fiber connector connecting the second optical fiber to the apparatus, wherein
the optical fiber connector is configured to be detachable to the apparatus.

12. The guidewire connector according to claim 11 , wherein
the apparatus is configured to emit the light from two of the second optical fibers or more branched via an optical branching unit, and
the wire fixing member is configured such that, for each of the second optical fibers, another guidewire can be fixed to the adapter member.

13. An ultrasonic imaging apparatus configured to capture an image of a subject using an ultrasonic wave, the ultrasonic imaging apparatus comprising:
an ultrasonic oscillator formed of a light absorbing material that is configured to transmit the ultrasonic wave by absorbing light;
an ultrasonic probe configured to receive a reflected ultrasonic wave reflected from the subject;
an image generation unit configured to generate an ultrasonic image of the subject using the reflected ultrasonic wave received by the ultrasonic probe;
a light source configured to supply the light to the ultrasonic oscillator; and
a guidewire connector connecting the ultrasonic imaging apparatus and a guidewire configured to guide an in-body insertion instrument, wherein
a first optical fiber that receives the light is disposed along the guidewire, and
the guidewire connector includes
an adapter member detachably attached to the ultrasonic imaging apparatus, and
a wire fixing member fixing the guidewire to the adapter member, wherein
the wire fixing member has an outer diameter equal to or smaller than an outer diameter of the guidewire.

14. The ultrasonic imaging apparatus according to claim 13 , further comprising:
a sensor configured to detect whether the adapter member is attached to the ultrasonic imaging apparatus and detect whether the guidewire is attached to the adapter member; and
a blocking unit configured to block the light when the sensor detects that the adapter member is not attached to the ultrasonic imaging apparatus, or the guidewire is not attached to the adapter member.

Assignees

• Hitachi Ltd
• Fujifilm Healthcare Corp

Inventors

• Imai Ryo
• Tanaka Tomohiko

Classifications

• G02B6/3897

  Connectors fixed to housings, casing, frames or circuit boards (G02B6/44528 takes precedence) · CPC title

• A61B5/06

  Devices, other than using radiation, for detecting or locating foreign bodies {; Determining position of diagnostic devices within or on the body of the patient} · CPC title

• A61B8/0841

  for locating instruments · CPC title

• G02B6/3825

  with an intermediate part, e.g. adapter, receptacle, linking two plugs · CPC title

• A61B5/0095 Primary

  by applying light and detecting acoustic waves, i.e. photoacoustic measurements · CPC title