JP2003164455A - Ultrasonic endoscope and bronchus tube therefor - Google Patents

Ultrasonic endoscope and bronchus tube therefor

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Publication number
JP2003164455A
JP2003164455A JP2001367602A JP2001367602A JP2003164455A JP 2003164455 A JP2003164455 A JP 2003164455A JP 2001367602 A JP2001367602 A JP 2001367602A JP 2001367602 A JP2001367602 A JP 2001367602A JP 2003164455 A JP2003164455 A JP 2003164455A
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JP
Japan
Prior art keywords
ultrasonic
distal end
endoscope
portion
ultrasonic probe
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Withdrawn
Application number
JP2001367602A
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Japanese (ja)
Inventor
Toshihiro Sei
俊広 静
Original Assignee
Olympus Optical Co Ltd
オリンパス光学工業株式会社
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Publication date
Application filed by Olympus Optical Co Ltd, オリンパス光学工業株式会社 filed Critical Olympus Optical Co Ltd
Priority to JP2001367602A priority Critical patent/JP2003164455A/en
Publication of JP2003164455A publication Critical patent/JP2003164455A/en
Application status is Withdrawn legal-status Critical

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Abstract

<P>PROBLEM TO BE SOLVED: To provide an ultrasonic endoscope suited for use in a bronchus while making its insertion part as narrow as possible to provide a forward field of view and allow safe puncturing operation, and a bronchus tube for the ultrasonic endoscope. <P>SOLUTION: An ultrasonic probe part 7 is provided at the front end of a hard front end portion 6 disposed at the distal end of an elongate insertion part 2 for insertion into a bronchus, and an optical block 8 provided with an observing optical system 9 of forward strabismus, an illuminating optical system 10, and a forceps exit 11 of a channel for an end-therapy accessory is disposed at the rear end of the insertion part 2. The ultrasonic probe part 7 is offset relative to the optical block 8 in a direction opposite to the direction in which an ultrasonic transducer 12 disposed in the ultrasonic probe part 7 radiates ultrasonic waves. <P>COPYRIGHT: (C)2003,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bronchial ultrasonic endoscope which can be inserted into a narrow bronchus, and a tracheal tube for the ultrasonic endoscope. 2. Description of the Related Art Generally, as an ultrasonic endoscope, for example, Japanese Patent Application Laid-Open No. 1-124444 discloses a puncture ultrasonic endoscope provided with a puncture needle and capable of puncturing under the guidance of an ultrasonic image. A mirror is shown. In a conventional ultrasonic endoscope for this type of puncture, an ultrasonic probe is disposed on the distal end side of the distal end hard portion in order to observe the puncture needle with both the optical image and the ultrasonic image. An optical block having a treatment tool ejection port for projecting a puncture needle is provided at a base end side of the hard portion. The viewing direction of the optical observation system housed in the optical block is directed to the side. Japanese Patent Application Laid-Open No. 5-344973 discloses that an observation optical system of an ultrasonic endoscope for puncturing is configured to have a front perspective, and the puncture needle can be optically observed by the observation optical system having a front perspective. However, an ultrasonic endoscope having a configuration capable of observing the distal end direction of the endoscope to some extent is shown. [0004] Problems to be solved by the invention
In the device disclosed in Japanese Patent Application Laid-Open No. 4 (1999) -1995, a puncture needle can be captured by an ultrasonic image and an optical image. However, the optical field of view of this ultrasonic endoscope is a so-called side view, and the distal end direction of the insertion portion of the endoscope cannot be optically observed. Therefore, when the insertion section of the endoscope is inserted, an optical field of view in the distal direction cannot be obtained, so that there is a problem that the operation of inserting the insertion section of the endoscope becomes difficult. In particular, in a bronchoscope which is inserted into a bronchus of a human body, there is a strong demand that an optical field of view in the distal direction of the insertion portion of the endoscope can be obtained because the bronchus into which the insertion portion of the endoscope is inserted is thin. . Further, even when the viewing direction of the observation optical system is arranged obliquely forward as in the apparatus disclosed in Japanese Patent Application Laid-Open No. Hei 5-344733, the ultrasonic probe is arranged ahead of the observation optical system. Therefore, there is a problem that a direction (generally a down direction) of the ultrasonic probe in the visual field of the observation optical system is blocked by the ultrasonic probe, and a visual field in the distal direction cannot be sufficiently obtained. In general, in an ultrasonic endoscope for bronchi, since the bronchi are narrow, it is important to optically observe the front when the endoscope is inserted to enhance the safety of the procedure. However, in order to obtain a sufficient visual field in the direction of the distal end of the observation optical system, it is necessary to make the ultrasonic probe extremely thin or to sufficiently separate the observation optical system from the ultrasonic probe in the radial direction. . Here, since it is technically difficult to make the ultrasonic probe sufficiently thin, there is a problem in that it is difficult to obtain a sufficient visual field in the distal direction of the observation optical system. On the other hand, when the observation optical system is sufficiently separated from the ultrasonic probe in the radial direction, it is necessary to increase the size of the observation optical system at the hard end portion. As described above, when the observation optical system for the distal end hard portion is enlarged, there is a problem that the insertion portion of the endoscope becomes thick. However, since the bronchi have a very narrow lumen structure, when the insertion portion of the endoscope is made thicker,
There is a problem that it not only leads to pain for the patient but also makes it difficult to secure the airway. The present invention has been made in view of the above circumstances, and an object of the present invention is to make the insertion section of an endoscope as narrow as possible, obtain a front view, and perform a puncture operation safely. Another object of the present invention is to provide an ultrasonic endoscope which can be suitably used for bronchi and a tracheal tube for the ultrasonic endoscope. According to a first aspect of the present invention, a distal end hard portion is disposed at a distal end of an elongated insertion portion to be inserted into a bronchus, and an ultrasonic wave is disposed on the distal end side of the distal end hard portion. An optical block is disposed on a probe portion and a base end side, respectively, and an ultrasonic probe for scanning an ultrasonic scanning plane substantially parallel to an axial direction of the insertion portion is disposed on the ultrasonic probe portion, The block is provided with a front oblique observation optical system, an illumination optical system, and a channel for a treatment tool arranged to protrude the treatment tool on the ultrasonic scanning plane, and the ultrasonic probe is an ultrasonic probe. An ultrasonic endoscope characterized in that the ultrasonic probe section is offset with respect to the optical block in a direction opposite to a direction in which light is emitted.
According to the first aspect of the present invention, the ultrasonic probe is offset with respect to the optical block in a direction opposite to the direction in which the ultrasonic probe emits ultrasonic waves, so that the observing optical system having a front oblique view allows the treatment tool ( In addition to observing the needle), the field of view of the insertion section of the endoscope in the forward direction is widened to make it easier to see, and the insertion section of the endoscope is made as thin as possible. According to a second aspect of the present invention, a rigid distal end is provided at the distal end of an elongated insertion portion to be inserted into the bronchus, an ultrasonic probe portion at the distal end side of the rigid distal end portion, and an optical block at the proximal end side. Are respectively disposed, and an ultrasonic probe for scanning an ultrasonic scanning plane substantially parallel to the axial direction of the insertion portion is disposed on the ultrasonic probe portion, and a front oblique observation optical system is provided on the optical block. An illumination optical system, and a tracheal tube main body for inserting the insertion portion of an ultrasonic endoscope provided with a channel for a treatment tool arranged to project the treatment tool on the ultrasonic scanning plane. The length of the tracheal tube body is at least about the length from the patient's mouth to the distal end of the insertion section of the endoscope, and its cross-sectional shape is set to a flat shape. In the body Kutomo a tracheal tube for ultrasonic endoscope being characterized in that disposed ultrasonic transmitting portion near the tip portion of the endoscope. According to the second aspect of the present invention, by inserting the insertion portion of the ultrasonic endoscope into the tracheal tube, even when an angle operation or the like is performed in the bronchus, the distal end hard portion locally compresses the trachea. Without
More secure. In addition, since ultrasonic observation and puncture can be performed through the tracheal tube, there is no step on the hard end of the trachea pressing against the tracheal wall due to the reaction force of needle insertion at the time of puncture. Since the tracheal tube is interposed between the insertion portion of the mirror and the trachea, the compressive force on the trachea is dispersed. Also,
By making the cross-sectional shape of the tracheal tube flat,
A gap is formed in the tracheal tube having a substantially circular cross section in the direction of the minor axis of the trachea tube, so that the airway can be reliably secured. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows an overall configuration of an ultrasonic endoscope 1 according to the present embodiment. In the ultrasonic endoscope 1, an operation unit 3 on a hand side is connected to a base end of an elongated insertion unit 2 inserted into a bronchus of a human body. Further, a curved portion 5 is connected to the distal end of the elongated flexible portion 4 of the insertion portion 2, and a distal end hard portion 6 is attached to the distal end thereof. The flexible portion 4 and the curved portion 5 have a substantially circular cross-sectional shape. Further, as shown in FIG. 2, the distal end hard portion 6 includes an ultrasonic probe portion 7 on the distal end side and an optical block 8 on the proximal end side. Since the rear end side of the optical block 8 is connected to the bending portion 5,
Its cross section is circular. The optical block 8 houses an observation optical system 9 and an illumination optical system 10 side by side, as shown in FIG. Here, the observation optical system 9 is formed by a front oblique observation optical system with an optical field of view obliquely forward as indicated by reference numeral V in FIG. Further, in the optical block 8, a forceps outlet 11, which is an opening on the distal end side of a forceps channel disposed in the insertion section 2, is also arranged obliquely forward. The forceps outlet 11 is arranged near a position where the observation optical system 9 and the illumination optical system 10 are juxtaposed. The ultrasonic probe section 7 includes an array type ultrasonic transducer (ultrasonic probe) arranged in an arc shape.
12 are incorporated. Here, as shown in FIG. 2, the ultrasonic scanning surface 13 that is ultrasonically scanned by the ultrasonic transducer 12 is a surface that is substantially parallel to the axial direction of the insertion unit 2, and the ultrasonic scanning range S is: It has a fan shape. The fan-shaped center line is approximately perpendicular to the axial direction of the insertion section 2 or slightly inclined toward the distal end. And FIG.
The forceps outlet 11 of the optical block 8 is arranged on substantially the same plane as the ultrasonic scanning surface 13 as shown in FIG. As shown in FIG. 3, the ultrasonic probe section 7 is located on the opposite side (lower side in FIGS. 2 and 3) of the ultrasonic scanning range S with respect to the base end side of the optical block 8. Is offset by the offset amount e1. In other words, when the distal end hard portion 6 of the endoscope 1 is viewed from the front, the ultrasonic probe unit 7
It is arranged so that it protrudes downward from the inside. Further, the step between the ultrasonic probe section 7 and the optical block 8 due to the offset of the ultrasonic probe section 7 is smoothly connected by the inclined surface-like connecting section 14 as shown in FIG. A ring-shaped groove 16 for mounting the balloon 15 is provided on the distal end side and the proximal end side of the ultrasonic probe section 7. The balloon 15 is made of rubber having a cylindrical shape. A ring-shaped band portion 17 is formed at the opening at both ends of the cylinder of the balloon 15. The band portion 17 is formed to have a smaller diameter than the diameter of the groove portion 16 so that when the band portion 17 is fitted into the groove portion 16, it becomes watertight by tightening. The ultrasonic probe unit 7 includes
A conduit (not shown) for supplying and discharging water is opened inside the balloon 15. The operation unit 3 on the hand side of the ultrasonic endoscope 1
Is provided with an eyepiece section 18 at the terminal section. Further, an outer peripheral portion of the operation section 3 is connected to an operation lever 19 for operating the bending section 5 at an angle, a forceps port 20, and a pipe (not shown) for supplying and discharging water to the inside of the balloon 15. And a base end of the universal cord 22 is connected. A connector portion for connecting to a light source device (not shown) and an ultrasonic observation device (not shown) is provided at a distal end portion of the universal cord 22. The puncture needle 23 can be inserted into the forceps channel from the forceps port 20 of the operation unit 3. The ultrasonic endoscope 1 of the present embodiment is provided with a tracheal tube 24 into which the insertion section 2 is inserted. The tracheal tube 24 has a tracheal tube main body 25 made of a flexible ultrasonic-permeable resin tube. Further, the length of the tracheal tube 24 is
It is slightly shorter than the insertion section 2 of the ultrasonic endoscope 1. For example, at the time of use (during puncturing), the proximal end of the tracheal tube 24 is outside the mouth of the patient, and the distal end is set to a length such that the distal end of the insertion section 2 does not project. The cross-sectional shape of the tracheal tube 24 is non-circular and flat and elliptical as shown in FIG. The major axis of the cross-sectional shape of the tracheal tube 24 is set to be substantially the same as or smaller than the diameter of the trachea H of the human body. Therefore, when the tracheal tube 24 is inserted into the patient's trachea H, a gap is formed between the substantially circular trachea H and the flat elliptical tracheal tube 24, and this gap becomes an airway. As shown in FIG. 3, the inner diameter of the tracheal tube 24 is set to a long diameter and a short diameter suitable for allowing the distal end hard portion 6 of the ultrasonic endoscope 1 to pass therethrough. Next, the operation of the above configuration will be described.
When the ultrasonic endoscope 1 according to the present embodiment is used, the insertion section of the ultrasonic endoscope 1 is placed in a state where the tracheal tube 24 is put on the insertion section 2 of the ultrasonic endoscope 1 in advance as shown in FIG. 2 is inserted into the patient's trachea H. Here, since the tracheal tube 24 has a flat cross-sectional shape, the tracheal tube 24 is inserted between the substantially circular trachea H and the flat oval tracheal tube 24 during the insertion of the ultrasonic endoscope 1. A gap is formed in the minor axis direction. Thereafter, when the distal end hard portion 6 reaches the target site, the tracheal tube 24 is advanced until the distal end of the tracheal tube 11 exceeds the distal end of the insertion portion 2 of the endoscope 1. Subsequently, the degassed water 26 is sent to the balloon 15 as shown in FIG. In this state, the bending portion 5 is bent by operating the operation lever 19 of the ultrasonic endoscope 1, and the distal end hard portion 6 of the endoscope 1 is moved upward (up direction) in FIG. The trachea H, the tracheal tube 24 and the balloon 8 are brought into close contact with each other. Further, in this state, the puncture target H2 is drawn on the image by ultrasonic observation. Thereafter, the puncture needle 23 is inserted into the forceps channel of the ultrasonic endoscope 1 and protrudes from the forceps outlet 11.
At this time, the puncture needle 23 pierces the trachea H through the tracheal tube 24 under the guidance of the ultrasonic image, and punctures the puncture target H2 near the trachea H. In this state, a syringe or the like is connected to the puncture needle 23 for suction, and cells at the target site for puncture are sucked into the needle 23. Therefore, the above configuration has the following effects. That is, the ultrasonic endoscope 1 of the present embodiment
Then, the distal end hard part 6 is constituted by the ultrasonic probe part 7 and the optical block 8, and the ultrasonic probe part 7 is
, The optical field of view V of the observation optical system 9 having a front oblique view.
Is not interrupted by the ultrasonic probe 7.
Therefore, a sufficiently wide optical field of view V can be obtained also in the direction of the distal end of the insertion section 2 of the endoscope 1, so that the insertion section 2 of the endoscope 1 can be easily inserted. Further, since it is not necessary to adjust the thickness of the optical block 8 to the outer diameter of the ultrasonic probe section 7, it is not necessary to make the optical block 8, the curved portion 5, the flexible portion 4 and the like particularly thick. Therefore, the ultrasonic endoscope 1 can be inserted and the endoscope 1 can be inserted.
Even when the tracheal tube 24 having a length reaching the distal end of the insertion section 2 is combined, the ultrasonic probe section 7 is offset from the cross section of the rear end of the optical block 8 so as to protrude downward in FIG. The distal hard portion 6 disposed in the state
It is difficult to apply a local compressive force to the trachea H even when performing an angle operation in the inside, and it is safer. Further, since the tracheal tube 24 is made of an ultrasonic-permeable resin, ultrasonic observation and puncture of the puncture needle 23 through the tracheal tube 24 become possible. Accordingly, when the distal end hard portion 6 receives a reaction force of the puncture of the puncture needle 23 during the puncture of the puncture needle 23, a step or the like of the distal end hard portion 6 does not press against the wall surface of the trachea H and no obstacle occurs. . Further, even when the currently used ultrasonic endoscope 1 is replaced with another endoscope, when the ultrasonic endoscope 1 is pulled out from the trachea H, the ultrasonic probe of the hard distal end portion 6 is used. Since the offset portion between the portion 7 and the optical block 8 does not directly rub the trachea H, the burden on the trachea H is small. In the present embodiment, the tracheal tube 24
Has a flat elliptical cross section, so that the tracheal tube 24
Is inserted into the trachea H of the patient, a gap can be formed between the substantially circular trachea H and the flat oval tracheal tube 24, and this gap can be used as an airway, It can be surely secured. The present invention is not limited to the above embodiment. For example, in the tracheal tube 24 of the first embodiment, a material at least near the distal end of the tracheal tube body 25 may be made optically transparent. In this modification, since the vicinity of the distal end of the tracheal tube 24 is transparent, the wall surface of the trachea H can be optically observed even when the wall surface of the trachea H does not adhere to the observation optical system 9 when the puncture needle 23 is punctured. It becomes. Therefore, the presence or absence of bleeding from the wall of the trachea H can be optically confirmed, which has the effect of increasing safety. Further, it goes without saying that various modifications can be made without departing from the spirit of the present invention. next,
Other characteristic technical matters of the present application are additionally described as follows. (Appendix 1) In an ultrasonic endoscope for a bronchi and an endotracheal tube for an ultrasonic endoscope for a bronchus, an ultrasonic probe that scans an ultrasonic scanning plane parallel to an insertion axis; A distal end rigid portion is provided at the distal end of the channel / insertion portion for the treatment instrument, which is arranged so that the treatment instrument protrudes on a flat surface. The distal end hard portion includes an ultrasonic probe at the distal end and an optical block at the proximal end. It is composed of The optical block is provided with a front oblique observation optical system and an illumination optical system. The ultrasonic probe unit is offset with respect to the optical block in a direction opposite to a direction in which the ultrasonic probe emits ultrasonic waves. Further, the tracheal tube for inserting the ultrasonic endoscope has a length from at least the patient's mouth to the distal end of the endoscope, and at least a material near the distal end is ultrasonically permeable, -Its cross-sectional shape is flat. A bronchial ultrasound endoscope, and a tracheal tube for a bronchial ultrasound endoscope. (Appendix 2) An ultrasonic endoscope for a bronchi and an endotracheal tube for an ultrasonic endoscope for a bronchus, an ultrasonic probe scanning an ultrasonic scanning plane parallel to an insertion axis; A distal end hard portion is provided at the distal end of the channel / insertion portion for the treatment tool arranged so as to protrude the treatment tool on the sound wave scanning plane. It is composed of an optical block. The optical block is provided with a front oblique observation optical system and an illumination optical system. The ultrasonic probe unit is offset with respect to the optical block in a direction opposite to a direction in which the ultrasonic probe emits ultrasonic waves. Further, the tracheal tube for inserting the ultrasonic endoscope has a length from at least the patient's mouth to the distal end of the endoscope, and at least a material near the distal end is ultrasonically permeable, -Its cross-sectional shape is flat. A bronchial ultrasound endoscope, and a tracheal tube for a bronchial ultrasound endoscope. (Appendix 3) In addition to the above configuration, the bronchial ultrasonic endoscope and the endotracheal ultrasonic endoscope according to Appendix 2, wherein the tracheal tube is made of an optically transparent material. Tracheal tube for endoscope. (Prior Art of Supplementary Items 1 to 3) Prior Art 1 Japanese Patent Application Laid-Open No. 1-124444 discloses an ultrasonic endoscope that can perform puncture under the guidance of an ultrasonic image. . In this prior art, the puncture needle can be captured by an ultrasonic image and an optical image, but the optical field of view is so-called side view, and the endoscope distal direction cannot be optically observed. At the time of insertion, it is easier to insert and therefore more secure if an optical field of view in the distal direction is obtained. Particularly in bronchial endoscopes, since the bronchi are thin, there is a strong demand for obtaining an optical field in the distal direction. Prior art 1 has a problem in this respect. -Prior art 2 Japanese Patent Laid-Open No. 5-344973 In prior art 2, the optical system is configured to have a front perspective,
While the puncture needle can be optically observed, the tip direction can also be observed (to some extent). However, in order to obtain a sufficient visual field in the direction of the tip, it is necessary to make the ultrasonic probe extremely thin, or to make the observation optical system sufficiently far from the ultrasonic probe in the radial direction. Otherwise, a certain direction (generally the down direction) of the ultrasonic probe in the field of view is blocked by the ultrasonic probe, and a sufficient visual field in the distal direction cannot be obtained. Since it is technically difficult to make the ultrasonic probe sufficiently thin, it is impossible to form a bronchial ultrasonic endoscope with a narrow and forward visual field sufficiently by this prior art. (Problems to be Solved by Additional Items 1 to 3)
In the ultrasonic endoscope for puncture for the purpose of puncture,
In order to observe the puncture needle with both the optical image and the ultrasonic image, an ultrasonic probe part is arranged on the distal side of the rigid distal part, and an optical block having a treatment tool ejection port is arranged on the proximal side of the rigid distal part. The viewing direction of the optical observation system contained therein is directed obliquely forward. However, since the ultrasonic probe is located ahead of the observation optical system, the field of view is obstructed, and a sufficient field of view in front cannot be obtained. In an ultrasonic endoscope for bronchi, since the bronchi are narrow, it is important to optically observe the front especially when the endoscope is inserted to enhance the safety of the procedure. On the other hand, since the bronchus have a very narrow lumen structure, it is difficult to make the insertion section of the endoscope thicker.
It must be avoided not only because it can lead to patient distress, but also because it can make it difficult to open the airway. According to the prior art, there is no alternative but to sacrifice the optical field of view in the distal direction or make the endoscope thick. (Objects of Supplementary Items 1 to 3) An object of the present invention is to provide a bronchial ultrasonic endoscope for puncture, in which an endoscope insertion portion is formed as thin as possible and a front view can be obtained. It is to be. (Means for Solving the Problem of Additional Item 1)
In an ultrasonic endoscope for bronchi and an endotracheal tube for ultrasonic endoscopy for bronchi, an ultrasonic probe that scans an ultrasonic scanning plane parallel to the insertion axis; and a treatment tool on the ultrasonic scanning plane A distal end hard portion is provided at the distal end of the channel / insertion portion for the treatment tool arranged to protrude, and the distal end hard portion is configured by an ultrasonic probe at the distal end and an optical block at the proximal end. The optical block is provided with a front oblique observation optical system and an illumination optical system. The ultrasonic probe unit is offset with respect to the optical block in a direction opposite to a direction in which the ultrasonic probe emits ultrasonic waves. (Operation of Additional Item 1) With the above configuration,
Not only can the treatment tool (needle) be observed by the observation optical system, but also a wide field of view in the forward direction of the endoscope can be obtained. In addition, the optical block section, the curved section, the flexible section, and the like do not need to be thickened. (Means for Solving the Problem in Additional Item 2)
Further, the tracheal tube for inserting the ultrasonic endoscope has a length from at least the patient's mouth to the distal end of the endoscope, and at least a material near the distal end is ultrasonically permeable, -Its cross-sectional shape is flat. (Operation of Supplementary Item 2) With the above configuration,
Even when an angle operation or the like is performed in the bronchus, the distal end hard portion does not locally compress the trachea, which is safer. In addition, since ultrasonic observation and puncture can be performed through the tracheal tube, a step or the like of a hard distal end portion does not press against the tracheal wall due to a reaction force of needle insertion at the time of puncture. (Because the tracheal tube is interposed, the compression force on the trachea is dispersed.)
Further, since the tracheal tube is flattened, a gap is formed between the trachea tube and the trachea having a substantially circular cross section in the minor axis direction of the tracheal tube, and the airway can be reliably secured. According to the first aspect of the present invention, the ultrasonic probe is offset with respect to the optical block in the direction opposite to the direction in which the ultrasonic probe emits ultrasonic waves. The insertion section is made as thin as possible, and a visual field on the front side can be obtained, so that the puncturing operation can be performed safely and can be suitably used for bronchi. According to the second aspect of the present invention, the insertion section of the ultrasonic endoscope is inserted into the tracheal tube, so that the insertion section of the ultrasonic endoscope is operated in the bronchus even when the angle operation is performed. In addition, the distal end hard portion does not locally compress the trachea, which is safer. In addition, since ultrasonic observation and puncture can be performed through the tracheal tube, there is no step on the hard end of the trachea that presses the tracheal wall due to the reaction force of the needle insertion at the time of puncture. Since the tracheal tube is interposed between the insertion portion of the mirror and the trachea, the compressive force on the trachea is dispersed. In addition, by making the cross-sectional shape of the tracheal tube a flat shape, a gap is formed in the tracheal tube having a substantially circular cross-section in the minor axis direction of the trachea, and the airway can be reliably secured.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing the overall configuration of a puncture ultrasonic endoscope according to a first embodiment of the present invention. FIG. 2 is a vertical cross-sectional view showing a configuration of a main part near a distal end of an insertion unit in the ultrasonic endoscope for puncture according to the first embodiment. FIG. 3 is a front view showing the configuration of a main part near the distal end of the insertion section in the ultrasonic endoscope for puncture according to the first embodiment; FIG. 4 is a longitudinal sectional view of a main part for describing a puncturing operation of the puncture needle by the puncture ultrasonic endoscope according to the first embodiment; [Description of Signs] 2 Insertion part 6 Tip hard part 7 Ultrasonic probe part 8 Optical block 9 Observation optical system 10 Illumination optical system 11 Forceps outlet (channel for treatment instrument) 12 Ultrasonic transducer (ultrasonic probe)

Continuation of front page    F term (reference) 4C061 AA07 BB03 BB08 CC06 DD03                       FF35 FF40 FF43                 4C301 AA02 BB02 DD30 EE13 EE16                       EE19 FF05 FF15 FF17 GA01                       GA03 GB06 GC02 GC15                 4C601 BB23 DD30 EE11 EE13 EE16                       FE01 FE02 FF03 GA01 GA03                       GB01 GB03 GB04 GC01 GC02                       GC09 GC10 GC11 GC13 GC17

Claims (1)

  1. Claims: 1. A distal end hard portion is disposed at a distal end of an elongated insertion portion inserted into a bronchus, an ultrasonic probe portion is disposed at a distal side of the distal end hard portion, and an optical probe is disposed at a proximal end side. An ultrasonic probe for scanning an ultrasonic scanning plane substantially parallel to the axial direction of the insertion section is disposed on the ultrasonic probe section, and an observation optical system having a front perspective is provided on the optical block. And an illumination optical system, and a channel for a treatment tool disposed so as to project the treatment tool on the ultrasonic scanning plane, and a direction opposite to a direction in which the ultrasonic probe emits ultrasonic waves. An ultrasonic endoscope wherein the ultrasonic probe section is offset with respect to the optical block. 2. An elongated insertion portion to be inserted into the bronchus, a distal end hard portion is disposed at a distal end portion, an ultrasonic probe portion is disposed at a distal end side of the distal end hard portion, and an optical block is disposed at a proximal end side. An ultrasonic probe that scans an ultrasonic scanning plane that is substantially parallel to the axial direction of the insertion section in the ultrasonic probe section; an observation optical system having a front perspective view on the optical block; and an illumination optical system. A tracheal tube main body for inserting the insertion portion of an ultrasonic endoscope provided with a channel for a treatment tool disposed so as to protrude the treatment tool on the ultrasonic scanning plane; The length of the main body is at least about the length from the patient's mouth to the distal end of the insertion section of the endoscope, and its cross-sectional shape is set to a flat shape. Sight A tracheal tube for an ultrasonic endoscope, wherein an ultrasonic transmitting portion is provided near a distal end of the mirror.
JP2001367602A 2001-11-30 2001-11-30 Ultrasonic endoscope and bronchus tube therefor Withdrawn JP2003164455A (en)

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Cited By (8)

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JP2006122533A (en) * 2004-11-01 2006-05-18 Pentax Corp Ultrasonic endoscope for bronchus
JP2006141574A (en) * 2004-11-18 2006-06-08 Pentax Corp Ultrasonic endoscope for bronchi
WO2012067010A1 (en) * 2010-11-15 2012-05-24 オリンパスメディカルシステムズ株式会社 Ultrasound endoscope
KR101312433B1 (en) * 2005-06-03 2013-09-27 이노바셀 바이오테크놀로지 아게 Injection Appliance and Method
US9295455B2 (en) 2012-04-20 2016-03-29 Terumo Kabushiki Kaisha Biopsy system and biopsy method
JP2016059471A (en) * 2014-09-16 2016-04-25 富士フイルム株式会社 Hood for ultrasonic endoscope and ultrasonic endoscope
CN105996967A (en) * 2016-08-01 2016-10-12 苏州卓特医疗科技有限公司 Focus-adjustable optoacoustic bi-mode endoscope probe
JP2017064514A (en) * 2017-01-18 2017-04-06 富士フイルム株式会社 Hood for ultrasonic endoscope and ultrasonic endoscope

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006122533A (en) * 2004-11-01 2006-05-18 Pentax Corp Ultrasonic endoscope for bronchus
JP2006141574A (en) * 2004-11-18 2006-06-08 Pentax Corp Ultrasonic endoscope for bronchi
JP4619099B2 (en) * 2004-11-18 2011-01-26 Hoya株式会社 Bronchial ultrasound endoscope
KR101312433B1 (en) * 2005-06-03 2013-09-27 이노바셀 바이오테크놀로지 아게 Injection Appliance and Method
WO2012067010A1 (en) * 2010-11-15 2012-05-24 オリンパスメディカルシステムズ株式会社 Ultrasound endoscope
JP5148779B2 (en) * 2010-11-15 2013-02-20 オリンパスメディカルシステムズ株式会社 Ultrasound endoscope
CN103052357A (en) * 2010-11-15 2013-04-17 奥林巴斯医疗株式会社 Ultrasound endoscope
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JP2016059471A (en) * 2014-09-16 2016-04-25 富士フイルム株式会社 Hood for ultrasonic endoscope and ultrasonic endoscope
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JP2017064514A (en) * 2017-01-18 2017-04-06 富士フイルム株式会社 Hood for ultrasonic endoscope and ultrasonic endoscope

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