WO2013125493A1 - Dispositif d'acquisition d'image tomographique - Google Patents

Dispositif d'acquisition d'image tomographique Download PDF

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Publication number
WO2013125493A1
WO2013125493A1 PCT/JP2013/053892 JP2013053892W WO2013125493A1 WO 2013125493 A1 WO2013125493 A1 WO 2013125493A1 JP 2013053892 W JP2013053892 W JP 2013053892W WO 2013125493 A1 WO2013125493 A1 WO 2013125493A1
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WIPO (PCT)
Prior art keywords
tomographic image
main body
image acquisition
acquisition apparatus
unit
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Application number
PCT/JP2013/053892
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English (en)
Japanese (ja)
Inventor
狩野　渉
裕一 多田
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テルモ株式会社
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Publication of WO2013125493A1 publication Critical patent/WO2013125493A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/12—Diagnosis using ultrasonic, sonic or infrasonic waves in body cavities or body tracts, e.g. by using catheters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/08—Detecting organic movements or changes, e.g. tumours, cysts, swellings
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/13—Tomography
    • A61B8/14—Echo-tomography
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
    • A61B8/4444—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device related to the probe
    • A61B8/4455—Features of the external shape of the probe, e.g. ergonomic aspects
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
    • A61B8/4444—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device related to the probe
    • A61B8/4461—Features of the scanning mechanism, e.g. for moving the transducer within the housing of the probe
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
    • A61B8/4483—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device characterised by features of the ultrasound transducer

Definitions

  • the present invention relates to a tomographic image acquisition apparatus that is inserted into a living body to acquire a tomographic image and from which a treatment tool that performs a treatment on the living body protrudes.
  • Patent Document 1 describes a technique for projecting a puncture needle that shows an example of a treatment instrument that performs a treatment on a living body from an ultrasonic probe that shows an example of a tomographic image acquisition apparatus.
  • the protrusion angle at which the treatment tool protrudes by tilting the tip of the main body part regulate.
  • the protrusion angle at which the treatment tool protrudes is constant. Therefore, when there is a treatment target part to be treated at a position away from the wall surface of the bronchus or blood vessel or the like into which the main body part of the tomographic image acquisition apparatus is inserted, the treatment tool is operated by operating the position and posture of the tip of the main body part. It was necessary to adjust the protruding angle to protrude, and the work was very troublesome.
  • the projection angle was adjusted by operating the main body with a human hand, so that the surgeon can accurately reach the treatment target site. The ability of was greatly influenced.
  • An object of the present invention is to provide a tomographic image acquisition apparatus that can simplify the work in consideration of the above-mentioned problems and can accurately reach the treatment tool to the treatment target site without being affected by the ability of the operator. It is to provide.
  • a tomographic image acquisition apparatus of the present invention includes a tubular main body, a sensor unit, an insertion port, a projection port, a projection angle adjustment mechanism, and a control unit. And with.
  • the main body is inserted into the living body.
  • a sensor part is provided in the front-end
  • the insertion port is provided in the main body, and a treatment tool for performing treatment on a treatment target site in a living body is inserted.
  • the projecting port is provided in the main body, and projects the distal end of the treatment instrument inserted into the main body.
  • the protrusion angle adjusting mechanism is provided in the protrusion and adjusts the protrusion angle of the treatment instrument. And a control part produces
  • the projecting angle of the treatment tool can be changed without changing the position and posture of the main body, so that the operation can be simplified.
  • the control unit automatically adjusts the protrusion angle of the treatment tool based on the tomographic image, the treatment tool can accurately reach the treatment target region without being affected by the ability of the operator. .
  • FIG. 10A shows a tomographic image acquisition apparatus according to a fourth embodiment of the present invention.
  • FIG. 10A is a cross-sectional view showing a state in which the first sensor is inserted into the main body, and FIG.
  • FIG. 10B shows that the second sensor is inserted into the main body. it is a sectional view showing a state.
  • FIG. 11A is a sectional view and FIG. 11B is a front view showing a modification of the fixing mechanism of the tomographic image acquisition apparatus according to the fourth embodiment of the present invention.
  • FIG. 1 is a schematic configuration diagram showing a tomographic image acquisition apparatus of this example
  • FIG. 2 is a cross-sectional view showing a main part of the tomographic image acquisition apparatus of this example.
  • a tomographic image acquisition apparatus 1 shown in FIG. 1 is an apparatus that acquires a tomographic image in a living body and projects a treatment tool that performs a treatment on the living body.
  • the tomographic image acquisition apparatus 1 includes an ultrasonic probe 2 that is inserted into a living body, an image diagnosis unit 7, and a motor drive unit 8 that indicates a rotation drive unit.
  • the ultrasonic probe 2 has a main body portion 11 formed in a tubular shape, a sensor portion 12 built in the main body portion 11, and a drive shaft 13 (see FIG. 2).
  • a treatment tool 3 for performing treatment on a living body is attached to the ultrasonic probe 2 so as to be movable back and forth.
  • Examples of the treatment tool 3 include a biopsy device that collects tissue of a treatment target site in a living body, a guide wire that marks the position of the treatment target site, and / or guides the biopsy device, a stylet, and the like. .
  • the main body 11 is formed in an elongated and substantially cylindrical shape, and both ends thereof are closed.
  • the shape of the main body 11 is not limited to a substantially cylindrical shape, and various other shapes such as a rectangular tube shape or an elliptical cross section cut in a direction orthogonal to the axial direction are applied. can.
  • the front end of the main body 11 in the axial direction, that is, the side to be inserted into the living body is formed in a substantially hemispherical shape so as to be easily inserted into the lumen of the living body. Further, the main body 11 has flexibility in order to bend according to the bending of the lumen.
  • An insertion port 14 is formed on the base end side of the main body 11, and a projection port 15 is formed on the front end side of the main body 11.
  • the insertion port 14 and the projection port 15 communicate with each other through the insertion hole 16. Then, the treatment instrument 3 is inserted into the main body 11 from the insertion port 14.
  • the treatment tool 3 inserted into the insertion port 14 is inserted through the insertion hole 16. Further, the distal end portion of the treatment instrument 3 inserted through the insertion hole 16 protrudes from the protrusion port 15 to the outside of the main body portion 11.
  • the axial direction of the main body 11 is defined as the first direction X, and the direction orthogonal to the first direction X in the plane formed by the first direction X and the direction in which the treatment instrument 3 protrudes is the second direction. described as Y.
  • the main body 11 is provided with a protrusion angle adjusting mechanism 17 that adjusts the protrusion angle ⁇ of the treatment instrument 3.
  • the protrusion angle adjustment mechanism 17 includes an adjustment piece 21, an operation wire 22, an urging member 23, and an adjustment drive unit (not shown).
  • the adjusting piece 21 adjusts the protrusion angle of the treatment tool 3 from the protrusion 15 by bending the tip of the treatment tool 3 by contacting the treatment tool 3.
  • the adjustment piece 21 is formed in the shape of a tongue piece, and is arranged on the distal end side of the main body portion 11 in the protruding port 15.
  • a support shaft 24 is attached to one end of the adjustment piece 21 on the protruding port 15 side. Further, the adjustment piece 21 is rotatably supported by the main body 11 by the support shaft 24. Then, the adjustment piece 21 rotates along a plane formed by the first direction X and the second direction Y.
  • the treatment instrument 3 comes into contact with the contact surface 21a on the opposite side of the tip of the main body 11 in the adjustment piece 21.
  • the contact surface 21 a of the adjustment piece 21 is erected along the second direction Y, and the direction in which the opening of the protrusion 15 and the insertion hole 16 extend (first It is orthogonal to the direction X).
  • a biasing member 23 is attached to the other end of the adjustment piece 21 opposite to the end where the support shaft 24 is provided.
  • the urging member 23 is formed from a tension coil spring. The urging member 23 is fixed to the other end of the adjustment piece 21, and always urges the other end of the adjustment piece 21 toward the distal end side of the main body 11.
  • an operation wire 22 is attached to the other end of the adjustment piece 21.
  • the operation wire 22 is provided so as to be movable back and forth along the first direction X in which the main body 11 extends.
  • the end of the operation wire 22 opposite to the adjustment piece 21 is connected to the adjustment drive unit.
  • the adjustment drive unit When the adjustment drive unit is driven and the operation wire 22 is operated (pulled) toward the proximal end in the axial direction of the main body 11, the other end of the adjustment piece 21 protrudes against the urging force of the urging member 23.
  • the adjustment piece 21 rotates in a direction approaching the mouth 15 (see FIG. 7). That is, the adjustment piece 21 is inclined with respect to the first direction X.
  • protrusion angle the angle at which the treatment instrument 3 protrudes from the protrusion 15
  • the example which formed the adjustment piece 21 of the protrusion angle adjustment mechanism 17 in the shape of a tongue piece was demonstrated in this example, it is not limited to this.
  • a sensor unit 12 that transmits and receives signals is rotatably provided at the tip of the main body unit 11.
  • the sensor unit 12 is disposed closer to the distal end side of the main body 11 than the protrusion 15 provided in the main body 11.
  • the sensor unit 12 is provided so as to be biased in a direction away from the projecting port 15 with respect to the axis direction of the main body unit 11 in the second direction Y.
  • the position where the sensor unit 12 is provided is not limited to the position deviated from the axis center.
  • the sensor unit 12 may be arranged at the axial center of the main body unit 11, and the position where the sensor unit 12 is provided is not particularly limited.
  • the sensor unit 12 includes a substantially cylindrical ultrasonic transducer that transmits ultrasonic waves to a living body, and a receiver that receives a reflected ultrasonic signal reflected from the living body. That is, the tomographic image acquisition apparatus 1 of this example is an apparatus that acquires a tomographic image in a living body as an ultrasound image. A drive shaft 13 is attached to the sensor unit 12.
  • the drive shaft 13 is inserted through the main body portion 11 from the distal end portion to the proximal end portion.
  • the drive shaft 13 is connected to a motor drive unit 8 (see FIG. 3) provided at the proximal end portion of the main body portion 11 in the axial direction.
  • a motor drive unit 8 (see FIG. 3) provided at the proximal end portion of the main body portion 11 in the axial direction.
  • the rotational force is transmitted to the sensor unit 12 via the drive shaft 13.
  • the sensor unit 12 rotates about the first direction X as a rotation center.
  • the tomographic image acquisition apparatus 1 of this example has a scanning range of 360 degrees around the side surface of the main body 11, that is, in a direction orthogonal to the first direction X.
  • the ultrasonic image is acquired in the range of 360 degrees by rotating the sensor unit 12
  • the present invention is not limited to this.
  • the sensor unit 12 may not be rotated, or ultrasonic transducers may be arranged in an arc shape to acquire an ultrasonic image within a range of 360 degrees or less. That is, the present invention only needs to acquire an in-vivo tomographic image including the treatment target region M1.
  • the ultrasonic probe 2 is used while being inserted into a guide sheath 6.
  • the guide sheath 6 is formed in a tube shape with both ends open and has flexibility.
  • the guide sheath 6 is for guiding the ultrasonic probe 2 to the central part of the bronchus N1 and supporting the insertion of the ultrasonic probe 2.
  • a balloon 6 a that has elasticity and can be inflated and contracted is provided at the distal end of the guide sheath 6 in the axial direction.
  • the balloon 6a When the balloon 6a is inflated with the guide sheath 6 inserted into the lumen of the living body, the balloon 6a comes into close contact with the wall surface of the lumen (see FIG. 5).
  • the example which provided the balloon 6a in the guide sheath 6 was demonstrated in this example, it is not limited to this, You may provide the balloon 6a in the front-end
  • the balloon 6 a may be provided on at least one of the ultrasonic probe 2 and the guide sheath 6.
  • a balloon 6 a may be provided on the side surface of the main body 11 so as to surround the sensor unit 12. In this case, a liquid capable of transmitting ultrasonic vibration is injected into the balloon 6a.
  • FIG. 3 is a block diagram showing a control system of the tomographic image acquisition apparatus 1.
  • the image diagnosis unit 7 includes a control unit 31 and an image display unit 32.
  • the control unit 31 includes an angle adjustment signal transmission / reception unit 33, an ultrasonic signal transmission / reception unit 34, a motor control circuit 35, and a signal processing unit 36.
  • the angle adjustment signal transmission / reception unit 33 is connected to the protrusion angle adjustment mechanism 17 in the ultrasonic probe 2. Further, the angle adjustment signal transmitting / receiving unit 33 is connected to the signal processing unit 36. The angle adjustment signal transmission / reception unit 33 receives the angle adjustment signal calculated by the signal processing unit 36. Further, the angle adjustment signal transmission / reception unit 33 transmits the received angle adjustment signal to the protrusion angle adjustment mechanism 17. And the protrusion angle adjustment mechanism 17 drives the adjustment drive part based on the received angle adjustment signal, and adjusts the angle of the adjustment piece 21 (refer FIG. 2).
  • the angle adjustment signal transmission / reception unit 33 receives angle information of the adjustment piece 21 (see FIG. 2) from the protrusion angle adjustment mechanism 17 and transmits it to the signal processing unit 36.
  • the ultrasonic signal transmission / reception unit 34 is connected to the sensor unit 12 and the signal processing unit 36 of the ultrasonic probe 2.
  • the ultrasonic signal transmitting / receiving unit 34 is connected to the sensor unit 12 via the drive shaft 13 via a rotary joint 41 described later.
  • the ultrasonic signal transmission / reception unit 34 receives an ultrasonic oscillation signal from the signal processing unit 36 and transmits the received ultrasonic oscillation signal to the sensor unit 12.
  • the sensor unit 12 oscillates the ultrasonic transducer based on the ultrasonic oscillation signal from the ultrasonic signal transmission / reception unit 34.
  • the reflected ultrasonic signal received by the receiver of the sensor unit 12 is sent from the sensor unit 12 to the ultrasonic signal transmitting / receiving unit 34. Then, the ultrasonic signal transmitting / receiving unit 34 transmits the received reflected ultrasonic signal to the signal processing unit 36.
  • the signal processing unit 36 is connected to the image display unit 32.
  • the signal processing unit 36 is connected to the motor drive unit 8 through the motor control circuit 35.
  • the motor drive unit 8 includes a rotary joint 41 and a rotation drive device 42.
  • the rotation drive device 42 is connected to the drive shaft 13 of the ultrasonic probe 2 via the rotary joint 41.
  • the rotation drive device 42 includes a radial scanning motor 43 and an encoder unit 44.
  • the radial scanning motor 43 is driven to rotate based on a rotation signal sent from the signal processing unit 36 via the motor control circuit 35.
  • the rotational force of the radial scanning motor 43 is transmitted to the drive shaft 13 and the sensor unit 12 of the ultrasonic probe 2 via the rotary joint 41. Further, the rotation information of the radial scanning motor 43 is detected by the encoder unit 44.
  • the encoder unit 44 transmits the detected rotation information of the radial scanning motor 43 to the signal processing unit 36 via the motor control circuit 35.
  • the signal processing unit 36 generates an ultrasonic tomographic image based on the reflected ultrasonic image signal received by the sensor unit 12 and the rotation information of the radial scanning motor 43 received from the encoder unit 44.
  • the ultrasonic tomographic image generated by the signal processing unit 36 is displayed on the image display unit 32.
  • an ultrasonic endoscope apparatus was demonstrated as a tomographic image acquisition apparatus in this example, it is not limited to this.
  • an optical coherence tomography apparatus (provided with a light irradiating unit that irradiates light to a living body and a light receiving unit that receives light reflected from the living body and using light interference)
  • Optical Coherent Tomography may be applied.
  • the tomographic image acquisition apparatus may be any apparatus that can acquire a tomographic image in a living body.
  • FIG. 4 is an explanatory diagram showing a state in which the ultrasonic probe 2 is inserted into the living body.
  • the guide sheath 6 is omitted.
  • FIG. 5 is a side view showing a state in which the distal end portion of the ultrasonic probe 2 is inserted to the vicinity of the treatment target site.
  • 6 is a diagram illustrating an example of a tomographic image displayed on the image display unit 32 of the image diagnostic unit 7
  • FIG. 7 is a cross-sectional view illustrating a state where the treatment tool 3 is punctured into a treatment target site.
  • the ultrasonic probe 2 is inserted from the oral cavity P of the patient R into the bronchus N1 of the lung Q showing an example of a living body. At this time, the ultrasonic probe 2 is inserted through the cylindrical hole of the guide sheath 6 as shown in FIGS.
  • the balloon 6a provided at the distal end of the guide sheath 6 is inflated, and the balloon 6a is brought into close contact with the wall surface of the bronchus N1. Thereby, the periphery of the bronchi N1 ahead of the balloon 6a is occluded.
  • a liquid that is an ultrasonic transmission medium is injected into the distal side of the bronchi N1 from the balloon 6a. Examples of the liquid to be injected include physiological saline.
  • the air layer that obstructs the propagation of ultrasonic waves can be removed by filling the peripheral side of the bronchi N1 with liquid. As a result, a clear ultrasonic image can be acquired by the ultrasonic probe 2.
  • the ultrasonic probe 2 is inserted up to the treatment target site M1, that is, a location where a so-called nodule is found.
  • pouring the liquid was demonstrated, you may inject
  • the sensor unit 12 is driven to receive the reflected ultrasonic signal reflected from the bronchus N1. Then, the sensor unit 12 transmits the received reflected ultrasonic signal to the control unit 31 of the image diagnostic unit 7. At this time, when the motor drive unit 8 is driven, the sensor unit 12 and the drive shaft 13 rotate around the first direction X (see FIG. 7). The rotation information of the sensor unit 12 is sent from the encoder unit 44 to the control unit 31.
  • the control unit 31 generates an ultrasonic tomographic image from the reflected ultrasonic signal and the rotation information of the sensor unit 12.
  • the generated ultrasonic tomographic image is displayed on the image display unit 32. Thereby, an ultrasonic image in a range of 360 degrees around the side surface of the main body 11, that is, in a direction orthogonal to the first direction X can be acquired.
  • the position of the ultrasonic probe 2 is adjusted so that the treatment target site M1 is captured on the ultrasonic image obtained by the ultrasonic probe 2.
  • the image display unit 32 of the image diagnosis unit 7 displays a cross-sectional image of the main body 11 of the ultrasonic probe 2 and the bronchi N1 as shown in FIG. 6, for example.
  • An ultrasonic image including a tomographic image is displayed.
  • the sensor unit 12 is disposed at a position deviated from the axis of the main body unit 11 in the second direction Y, that is, away from the projecting port 15 in the second direction Y.
  • the position of the projection port 15 from which the treatment tool 3 projects can be easily determined. Then, the surgeon rotates the ultrasonic probe 2 so that the protruding port 15 faces the treatment target site M1 side in the second direction Y.
  • the image display unit 32 may display a mark P indicating the side of the main body 11 where the protrusion 15 is provided, that is, the position where the treatment instrument 3 protrudes. In this case, even if the sensor unit 12 is provided at the axial center of the main body unit 11, the position of the protruding port 15 can be easily determined.
  • the surgeon designates a treatment target part M1 to be treated from the displayed ultrasonic image, and inputs position information of the treatment target part M1 to the image diagnosis unit 7 (see FIG. 3). Based on the input position information, the control unit 31 of the image diagnostic unit 7 measures the distance D in the second direction Y from the outer wall of the side surface of the main body 11 to the central part of the treatment target site M1.
  • control unit 31 may automatically search the treatment target part M1 from the ultrasonic image and measure the distance D. good. Further, when the treatment target part M1 is designated, the control is performed when the treatment target part M1 is not located in the plane A (see FIG. 6) formed in the first direction X and the direction in which the treatment tool 3 protrudes.
  • the unit 31 may display on the image display unit 32 that the ultrasonic probe 2 needs to be rotated.
  • the distance L in the first direction X from the sensor unit 12 to the projection port 15 from which the treatment instrument 3 projects is always constant.
  • the information on the distance L is set in the control unit 31 in advance.
  • control part 31 calculates protrusion angle (theta) which makes the treatment tool 3 protrude from the distance D and the distance L.
  • the control unit 31 generates an angle adjustment signal based on the calculated protrusion angle ⁇ , and transmits the generated angle adjustment signal to the protrusion angle adjustment mechanism 17. And as shown in FIG. 7, the protrusion angle adjustment mechanism 17 drives an adjustment drive part based on the received angle adjustment signal.
  • the adjustment drive unit is driven, the operation wire 22 is pulled by the adjustment drive unit.
  • the adjustment piece 21 rotates around the support shaft 24 against the urging force of the urging member 23. Thereby, the angle of the adjustment piece 21 is adjusted.
  • the control unit 31 includes the lower limit distance D1 in the second direction Y from the outer wall of the side surface of the main body 11 to the lower limit position where treatment is possible in the treatment target site M1, and the The upper limit distance D2 in the second direction Y from the outer wall of the side surface portion to the upper limit position at which treatment is possible in the treatment target site M1 is measured. Then, the protrusion angle range ⁇ 1 to ⁇ 2 may be calculated from the measured lower limit distance D1 and upper limit distance D2 and the distance L. In this way, by providing a range for the protrusion angle ⁇ , the accuracy of angle adjustment by the protrusion angle adjusting mechanism 17 can be set low.
  • the treatment instrument 3 is inserted into the insertion port 14 of the ultrasonic probe 2. Note that when the ultrasonic probe 2 is inserted into the bronchi N1 and the guide sheath 6, the treatment tool 3 may be inserted through the insertion hole of the ultrasonic probe 2 in advance.
  • the treatment tool 3 is bent by coming into contact with the contact surface 21a of the adjustment piece 21, and its traveling direction is adjusted. Therefore, the distal end portion of the treatment instrument 3 protrudes from the protrusion port 15 at a protrusion angle ⁇ .
  • the protrusion angle ⁇ of the treatment instrument 3 is set so that the treatment instrument 3 reliably reaches the treatment target site M1. Therefore, when the treatment tool 3 is further inserted into the bronchi N1, the distal end portion of the treatment tool 3 reaches the treatment target site M1.
  • the operation of the tomographic image acquisition apparatus 1 of this example is completed.
  • the control unit 31 automatically calculates the protrusion angle ⁇ of the treatment instrument 3 from the ultrasonic image acquired by the sensor unit 12. Therefore, the optimal protrusion angle ⁇ of the treatment instrument 3 can be automatically set without being affected by the ability of the operator.
  • the projection angle ⁇ of the treatment tool 3 can be set more accurately. Thereby, it can control that the arrival part of treatment implement 3 shifts from treatment object part M1.
  • the protrusion angle adjustment mechanism is automatically operated based on the calculated protrusion angle ⁇ . Therefore, the protrusion angle of the treatment tool 3 can be changed without changing the position and posture of the distal end portion of the main body 11, and the work can be simplified.
  • FIG. 8 is a cross-sectional view showing the main part of the tomographic image acquisition apparatus according to the second embodiment.
  • the difference between the tomographic image acquisition apparatus 51 according to the second embodiment and the tomographic image acquisition apparatus 1 according to the first embodiment is the configuration of the protrusion angle adjustment mechanism in the ultrasonic probe. Therefore, here, the protrusion angle adjusting mechanism will be described, and the same reference numerals are given to the portions common to the tomographic image acquisition apparatus 1, and the redundant description will be omitted.
  • the ultrasonic probe 52 in the tomographic image acquisition apparatus 51 is provided with a protrusion angle adjusting mechanism 57.
  • the protrusion angle adjustment mechanism 57 includes an adjustment piece 61, a first operation wire 62, a second operation wire 63, a support shaft 64, and an adjustment drive unit (not shown).
  • the adjustment piece 61 is formed in the shape of a tongue piece, and is disposed on the distal end side of the main body 11 in the protruding port 15.
  • a first operation wire 62 is attached to one end of the adjustment piece 61 on the protruding port 15 side.
  • a second operation wire 63 is attached to the other end of the adjustment piece 61 opposite to the one end.
  • a support shaft 64 is provided at an intermediate portion between one end and the other end of the adjustment piece 61.
  • the adjustment piece 61 is rotatably supported on the main body 11 by a support shaft 64. Then, the adjustment piece 61 rotates along a plane that is locked in the first direction X and the second direction Y.
  • the first operation wire 62 and the second operation wire 63 are arranged to be movable back and forth along the first direction X in which the main body 11 extends.
  • An adjustment drive unit is connected to the end of the first operation wire 62 and the second operation wire 63 opposite to the adjustment piece 61.
  • the adjustment piece 61 rotates around the support shaft 64.
  • the angle with the first direction X on the contact surface 61a of the adjustment piece 61 is increased. That is, the adjustment piece 61 rotates in a direction in which the contact surface 61 a is orthogonal to the first direction X.
  • the adjustment piece 61 rotates about the support shaft 64 in the direction opposite to the above-described direction.
  • the angle of the contact surface 61a of the adjustment piece 61 with the first direction X is small. That is, the adjustment piece 61 rotates in a direction in which the contact surface 61 a is parallel to the first direction X.
  • FIG. 9 is a schematic configuration diagram of a tomographic image acquisition apparatus according to the third embodiment.
  • the difference between the tomographic image acquisition apparatus 71 according to the third embodiment and the tomographic image acquisition apparatus 1 according to the first embodiment is the position of the insertion port provided in the main body of the ultrasonic probe. is there. Therefore, here, the ultrasonic probe will be described, and the same reference numerals are given to portions common to the tomographic image acquisition apparatus 1, and duplicate description will be omitted.
  • the ultrasonic probe 72 in the tomographic image acquisition apparatus 71 has a main body portion 81 and a sensor portion 12 built in the main body portion 81. In the vicinity of the sensor portion 12 at the distal end portion of the main body portion 81, a protruding port 85 from which the treatment instrument 3 protrudes is formed.
  • an insertion port 84 for inserting the treatment instrument 3 is provided in the vicinity of the projection port 85 in the main body 81.
  • the insertion port 84 is formed closer to the proximal end side in the axial direction of the main body 81 than the projection port 85.
  • the insertion port 84 and the projection port 85 communicate with each other through the insertion hole 86.
  • the insertion hole 86 of the ultrasonic probe 72 according to the third embodiment is set shorter than the insertion hole 16 of the ultrasonic probe 2 according to the first embodiment. Then, the treatment tool 3 is inserted only into the distal end portion of the main body portion 81.
  • the ultrasonic probe 72 is left with the treatment tool 3 left.
  • the extraction work can be easily performed.
  • the length of the treatment tool 3 used in the tomographic image acquisition apparatus 71 according to the third embodiment is smaller than that of the treatment tool 3 used in the tomographic image acquisition apparatus 1 according to the first embodiment. Can be shortened.
  • the ultrasonic probe 72 is inserted into the living body after the treatment instrument 3 is inserted into the ultrasonic probe 72.
  • FIGS. 10A and 10B are cross-sectional views of a tomographic image acquisition apparatus according to the fourth embodiment.
  • the tomographic image acquisition apparatus 301 according to the fourth embodiment is different from the tomographic image acquisition apparatus 1 according to the first embodiment in that the sensor unit can be attached to and detached from the main body of the ultrasonic probe. such is the point. Therefore, here, the main body part and the sensor part of the ultrasonic probe will be described, the same reference numerals are given to the parts common to the tomographic image acquisition apparatus 1, and the duplicate description will be omitted.
  • the main body portion 311 of the tomographic image acquisition apparatus 301 is provided with the protrusion angle adjusting mechanism 17 and the insertion hole 16 through which the treatment instrument 3 is inserted.
  • an insertion hole 314 into which the first sensor portion 312 and the second sensor portion 313 are detachably inserted is formed.
  • the insertion hole 314 penetrates the main body 311 along the axial direction. Therefore, an opening of the insertion hole 314 is formed at the tip of the main body portion 311 in the axial direction.
  • the first sensor unit 312 is a sensor that is made of, for example, a camera and can visually recognize the front of the main body unit 311 in the axial direction.
  • the first sensor unit 312 is attached to the distal end of the bendable insertion member 312a in the axial direction.
  • the second sensor unit 313 includes an ultrasonic transducer that transmits an ultrasonic wave to a living body and a receiver that receives a reflected ultrasonic signal reflected from the living body.
  • the second sensor unit 313 can acquire an in-vivo tomographic image as an ultrasonic image.
  • the second sensor portion 313 is attached to the distal end of the bendable insertion member 313a in the axial direction.
  • the main body 311 and the second sensor unit 313 are provided with a fixing mechanism 315 that fixes the second sensor unit 313 at a predetermined position of the insertion hole 314.
  • the fixing mechanism 315 includes a main body side magnet 315 a provided in the insertion hole 314 of the main body portion 311 and a sensor side magnet 315 b provided in the second sensor portion 313.
  • the main body side magnet 315a and the sensor side magnet 315b are attracted and fixed to a predetermined position of the insertion hole 314 by attracting each other by the magnetic force.
  • the example which provided the magnet for both the main-body part 311 and the 2nd sensor part 313 was demonstrated as the fixing mechanism 315, it is not limited to this.
  • at least one of the main body portion 311 and the second sensor portion 313 may be provided with a magnet, and the other of the main body portion 311 and the second sensor portion 313 may be provided with a ferromagnetic material made of iron or the like.
  • the tomographic image acquisition apparatus 301 First, as shown to FIG. 10A, it inserts in the insertion hole 314 of the main-body part 311 using the 1st sensor part 312 which is a sensor which can visually recognize the front. Next, the main body 311 is guided to a target site in the living body using image information from the first sensor unit 312.
  • the first sensor unit 312 is pulled out from the insertion hole 314.
  • the 2nd sensor part 313 which acquires a tomographic image in a living body is inserted in an insertion hole.
  • the main body side magnet 315a and the sensor side magnet 315b are attracted and fixed.
  • the second sensor unit 313 can be fixed at a predetermined position in the insertion hole 314.
  • the other configuration is the same as that of the tomographic image acquisition apparatus 1 according to the first embodiment described above, description thereof is omitted. Also by the tomographic image acquisition apparatus 301 having such a main body 311, the same operations and effects as those of the tomographic image acquisition apparatus 1 according to the first embodiment described above can be obtained.
  • FIGS. 11A and 11B are diagrams showing a modification of the fixing mechanism of the tomographic image acquisition apparatus 301 according to the fourth embodiment.
  • the fixing mechanism 315B includes an engaging protrusion 316 provided in the insertion hole 314B of the main body 311B, an engaging protrusion 316, and an engaging groove 317.
  • the engagement groove 317 is provided in the second sensor unit 313B.
  • the engagement protrusion 316 protrudes from the wall surface of the insertion hole 314B toward the radial center.
  • the second sensor portion 313B is fixed at a predetermined position in the insertion hole 314B.
  • the engagement groove 317 is not provided in the first sensor unit. Therefore, the first sensor portion is not fixed at the position where the engagement protrusion 316 is provided in the insertion hole 314B.
  • the engaging groove 317 may be provided in the first sensor unit and fixed at the same position as the second sensor unit 313B.
  • the diameter of the first sensor unit is sufficiently larger than the diameter of the second sensor unit 313B. You may make it small and set to the magnitude
  • the present invention is not limited to this.
  • a cylindrical member that accommodates the second sensor portion in the cylindrical hole may be provided, and a fixing mechanism may be provided on the cylindrical member. You may enable it to support the 2nd sensor part rotatably in the axial direction within the cylinder hole of this cylindrical member.
  • the present invention is not limited to the embodiment described above and shown in the drawings, and various modifications can be made without departing from the scope of the invention described in the claims.
  • the living body into which the main body portion is inserted is not limited to the bronchi.
  • it can be applied to the treatment of living bodies in the digestive system such as the large intestine, the small intestine, the esophagus, the urinary system such as the urinary tract, and the other parts such as blood vessels.
  • a protrusion angle adjustment mechanism may be provided in all of the plurality of protrusions, or a protrusion angle adjustment mechanism may be provided in at least one of the plurality of protrusions.

Abstract

Ce dispositif d'acquisition d'image tomographique (1) dispose d'un corps principal tubulaire (11), d'un bloc capteur (12), d'un orifice d'insertion (14), d'un trou de saillie (15), d'un mécanisme de réglage (17) de l'angle de saillie, et d'une unité de commande (31). Le bloc capteur (12) est prévu au niveau de la pointe du corps principal (11), qui est introduite dans le sujet, et transmet et reçoit des signaux dans/à partir du corps du sujet. Le mécanisme de réglage (17) de l'angle de saillie est prévu au niveau du trou de saillie (15) et règle l'angle (θ) au niveau duquel un instrument servant au traitement (3) fait saillie. L'unité de commande (31) génère des images tomographiques en se basant sur les signaux reçus par le bloc capteur (12) et fait fonctionner le mécanisme de réglage (17) de l'angle de saillie en fonction de ces images.
PCT/JP2013/053892 2012-02-24 2013-02-18 Dispositif d'acquisition d'image tomographique WO2013125493A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012038698 2012-02-24
JP2012-038698 2012-02-24

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56158646A (en) * 1980-05-09 1981-12-07 Olympus Optical Co Ultrasonic diagnostic apparatus
JPS6216744A (ja) * 1985-07-16 1987-01-24 株式会社島津製作所 超音波診断装置
JPH0759776A (ja) * 1993-08-23 1995-03-07 Aloka Co Ltd 体腔内用超音波探触子
JP2004033485A (ja) * 2002-07-03 2004-02-05 Olympus Corp 超音波プローブ
JP2009005769A (ja) * 2007-06-26 2009-01-15 Olympus Medical Systems Corp 超音波プローブ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56158646A (en) * 1980-05-09 1981-12-07 Olympus Optical Co Ultrasonic diagnostic apparatus
JPS6216744A (ja) * 1985-07-16 1987-01-24 株式会社島津製作所 超音波診断装置
JPH0759776A (ja) * 1993-08-23 1995-03-07 Aloka Co Ltd 体腔内用超音波探触子
JP2004033485A (ja) * 2002-07-03 2004-02-05 Olympus Corp 超音波プローブ
JP2009005769A (ja) * 2007-06-26 2009-01-15 Olympus Medical Systems Corp 超音波プローブ

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