JP2004275358A - Capsule type medical device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a capsule type medical device setting a capsule part in a body cavity into a prescribed working state and performing a targeting diagnosis and treatment. <P>SOLUTION: The capsule ultrasonic endoscope 1, when a drive motor 17 is driven to rotate an ultrasonic vibrator 11, generates an inertia force A1 relative to the longitudinal central axis of the capsule part 10, rotates a rotating weight 19 inversely to the rotating direction of the ultrasonic vibrator 11 by an output rotating shaft 18a of a rotating direction inversion mechanism 18 to generate an inertia force B1 being inverse to the inertia force A1 and having a similar intension, and prevents the rotation of the capsule part 10 of the capsule ultrasonic endoscope 1. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a capsule medical device that performs a diagnosis or a treatment using a capsule unit introduced into a body cavity.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a medical method has been known in which a capsule portion configured for medical use is introduced into a body cavity to collect information on a lesion in the body cavity and to administer a drug solution.
[0003]
For example, Japanese Patent Application Laid-Open No. 2001-112709 discloses a capsule endoscope in which an image sensor as an imaging device is provided in a capsule portion, and a captured image captured by the image sensor is displayed on a display device as an external device for observation. Has been proposed.
[0004]
Also, in an ultrasonic diagnostic apparatus that transmits and receives an ultrasonic signal for observation to and from a living tissue and obtains an ultrasonic tomographic image for diagnosis from an echo signal from the living tissue, for example, JP-A-2002-306491 discloses There has been proposed a medical capsule that enables ultrasonic diagnosis of a site where diagnosis is difficult with an ultrasonic probe.
[0005]
Furthermore, in recent years, capsule-type medical devices that send a capsule portion configured for medical use into a body cavity to collect information on a lesion in the body cavity and administer a medical solution to perform treatment have been studied. .
[0006]
As shown in FIG. 13, in a conventional capsule ultrasonic endoscope 201, a capsule section 210 is constituted by a main body housing 221 and a transducer cover 222, and an ultrasonic transducer 211 and a transducer holding The member 212, the vibrator shaft 213, the slip ring 214, the encoder 215, the drive motor 216, and the like are housed. Then, by driving the ultrasonic motor 211 with the driving motor 216 in the driving state, the ultrasonic oscillator 211 is rotated in the radial direction which is a direction orthogonal to the longitudinal center axis of the capsule portion 210 as shown by an arrow in FIG. By transmitting and receiving the sound wave beam 260 and transmitting the ultrasonic image signal processed in the capsule unit 210 to an ultrasonic observation device (not shown), which is an external device, the display device as shown in FIG. An in-vivo ultrasonic tomographic image centered on the center of the screen 251 is displayed.
[0007]
[Patent Document 1] JP-A-2001-112709 (pages 2-4, FIG. 1-11)
[0008]
[Patent Document 2] JP-A-2002-306491 (page 2-5, FIG. 1-5)
[Problems to be solved by the invention]
However, in the capsule ultrasonic endoscope 201 having the configuration shown in FIG. 13, the ultrasonic transducer 211 is introduced to introduce the capsule ultrasonic endoscope 201 into the body cavity 250 for observation as shown in FIG. When rotated, the entire capsule portion 210 rotates as indicated by arrow A due to the inertial force due to the rotation of the ultrasonic transducer 211. Then, as shown in FIG. 15, a problem occurs that the affected part images 252 and 253 displayed at positions away from the center of the screen 251 rotate and move as indicated by the arrow B with the rotation of the capsule part 210. I do.
[0009]
On the other hand, in a capsule endoscope provided with a conventional imaging device, there is no occurrence of a problem that the capsule portion rotates as in the capsule ultrasonic endoscope 201, but, for example, the nozzle provided in the capsule portion has an affected part. When the nozzle faces in a direction different from the above, there is a problem that the nozzle cannot be opposed to the affected part by adjusting the direction of the capsule part from outside the body.
[0010]
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a capsule medical device that can perform a target diagnosis, a treatment, and the like by setting a capsule portion in a body cavity to a desired working state.
[0011]
[Means for Solving the Problems]
The capsule medical device of the present invention is a capsule medical device that performs a diagnosis or a treatment by introducing a capsule portion into a body cavity,
In the capsule part, there is provided a working state adjusting means for adjusting a diagnosis state or a treatment state in the body cavity to an optimum state.
[0012]
The working condition adjusting means includes a drive motor disposed in the capsule portion, and a rotary weight rotated by the drive motor.
[0013]
According to this configuration, by appropriately rotating the drive motor in the capsule part introduced into the body cavity and rotating the rotary weight, the working state such as diagnosis or treatment by the capsule part is adjusted to an optimal state.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(1st Embodiment)
1 to 5 relate to a first embodiment of the present invention, FIG. 1 is a cross-sectional view illustrating the configuration of a capsule ultrasonic endoscope, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, and FIG. 1 is a cross-sectional view taken along the line BB of FIG. 1, FIG. 4 is a view for explaining a state of observation in a body cavity by a capsule ultrasonic endoscope, and FIG. 5 is an ultrasonic tomogram displayed on a screen obtained by the capsule ultrasonic endoscope It is a figure explaining an image. The capsule medical device according to the present embodiment is a capsule ultrasonic endoscope in which an ultrasonic transducer is arranged in a capsule portion.
[0015]
As shown in FIGS. 1 to 3, the capsule ultrasonic endoscope 1 has a capsule portion in which a substantially tubular capsule body portion 20 is integrated with a body cover 21 and a transducer cover 22 having hemispherical ends. 10 is provided. Inside the capsule part 10, an ultrasonic vibrator 11, a vibrator holding member 12, a vibrator shaft 13, an O-ring 14, a slip ring 15, an encoder 16, a drive motor 17, a rotation direction reversing mechanism part 18, and a rotary weight 19 are provided. Etc. are accommodated.
[0016]
The body cover 21 is fixedly arranged on one end of the capsule body 20 in a watertight manner, and the vibrator cover 22 is fixedly arranged on the other end in a watertight manner. A central through-hole having a central large-diameter hole 20a and a central small-diameter hole 20b is formed in the center of the capsule body 20.
[0017]
The O-ring 14 is disposed in the central small diameter hole 20b. The O-ring 14 is in close contact with the outer peripheral surface of the vibrator shaft 13 and the inner peripheral surface of the central small-diameter hole 20b to ensure liquid tightness and also supports the vibrator shaft 13. Then, an ultrasonic transmission medium 31 is filled in an inner space formed by the transducer cover 22, the capsule body 20, and the O-ring 14. Reference numeral 32 denotes an acoustic lens formed on the surface of the ultrasonic transducer 11 and formed, for example, with a convex surface.
[0018]
On the other hand, the slip ring 15, the encoder 16 and the drive motor 17 are arranged and fixed in the central large-diameter hole 20a. An ultrasonic vibrator 11 is disposed at a distal end of a vibrator shaft 13 projecting from the capsule body 20 toward the vibrator cover 22 via a vibrator holding member 12. The vibrator shaft 13 is rotatably supported substantially concentrically with the central axis in the longitudinal direction of the capsule section 10 by, for example, a ball bearing provided on the slip ring 15.
[0019]
As a result, the ultrasonic transducer 11 is disposed on the longitudinal center axis in the capsule section 10 and rotates to transmit an ultrasonic beam in a direction perpendicular to the longitudinal axis center axis of the capsule section 10. In the radial direction. That is, the capsule ultrasonic endoscope 1 is configured to perform a radial scan for obtaining an ultrasonic tomographic image in a direction perpendicular to the central axis of the capsule section 10 by rotating the ultrasonic transducer 11. .
[0020]
In the internal space formed by the capsule main body 20 and the main body cover 21, the other end of the drive motor 17, the rotation direction reversing mechanism 18, and the rotary weight 19 are arranged.
[0021]
On the other end face of the drive motor 17, a rotation direction reversing mechanism section 18 having an output rotation shaft 18a is provided. The rotation direction reversing mechanism 18 is provided with, for example, a gear train (not shown) for reversing the rotational force of the rotation shaft 17a of the drive motor 17 and transmitting a desired torque to the output rotation shaft 18a.
[0022]
The oscillating weight 19 is fixed to the rotating portion 43 formed of a highly rigid material such as stainless steel in a cylindrical shape and disposed on the output rotating shaft 18a by means such as bonding on the outer peripheral surface of the rotating portion 43. For example, it is composed of a tubular weight 44 made of a member having a large specific gravity such as lead or tungsten.
[0023]
A rotating part 43 constituting the rotating weight 19 is attached to the output rotating shaft 18a of the rotating direction reversing mechanism 18. Specifically, in a state where the output rotary shaft 18a is disposed in a through hole 43a formed at the center of the rotary unit 43, the rotary unit 43 is screwed with, for example, a screw (not shown) and the rotary unit 43 is connected to the output rotary shaft. 18a. Thus, the rotary weight 19 is rotatably disposed in the capsule portion 10.
[0024]
The capsule body 20 is provided with a power unit 48 for supplying power to the drive motor 17 and the like, for example, and a circuit board 49. The circuit board 49 transmits and receives ultrasonic waves to and from the ultrasonic vibrator 11 through the slip ring 15, and a drive motor rotation control circuit for controlling the rotation of the drive motor 17 by electric power supplied from the electric power means 48. Transmission / reception circuit, a signal processing circuit for processing a signal received from the transmission / reception circuit, a wireless transmission circuit for performing predetermined processing on an ultrasonic image signal processed by the signal processing circuit, and wirelessly transmitting the ultrasonic image signal to an ultrasonic observation apparatus (not shown). Is provided.
[0025]
The input / output cable (not shown) of the ultrasonic vibrator 11 is electrically connected to a cable on the output side of the slip ring 15 through a ring portion (not shown) of the slip ring 15 which is a rotary signal transmission means and a metal brush. Conducted. The rotating shaft 17a and the vibrator shaft 13 are mechanically integrated.
[0026]
The operation of the capsule ultrasonic endoscope 1 configured as described above will be described.
When the power unit 48 in the capsule unit 10 is set in a power supply state, a drive signal is output from a drive motor rotation control circuit on the circuit board 49, and the rotation shaft 17a of the drive motor 17 is rotated. As a result, the vibrator shaft 13 rotates and the ultrasonic vibrator 11 enters a rotating state, and the output rotation shaft 18a of the rotation direction reversing mechanism 18 rotates in the opposite direction to the rotation shaft 17a, The rotary weight 19 integrated with the output rotary shaft 18a is rotated in a direction opposite to the rotation direction of the ultrasonic transducer 11.
[0027]
At this time, as shown in FIG. 4, in the capsule ultrasonic endoscope 1, when the ultrasonic transducer 11 is rotated, the inertia force A1 for rotating the capsule section 10 with respect to the longitudinal center axis is generated. On the other hand, when the rotation weight 19 is rotated by the rotation of the output rotation shaft 18 a of the rotation direction reversing mechanism 18, the rotation of the ultrasonic transducer 11 with respect to the longitudinal center axis of the capsule part 10 is performed. It rotates in the direction opposite to the direction, and generates an inertia force B1 having the same magnitude in the direction opposite to the inertia force A1. This prevents the capsule unit 10 of the capsule ultrasonic endoscope 1 from being rotated.
[0028]
Further, a transducer drive signal is output to the ultrasonic transducer 11 from the transmission / reception circuit on the circuit board 49. This transducer drive signal is supplied to the ultrasonic transducer 11 via the slip ring 15 or the like. Then, an ultrasonic pulse is repeatedly transmitted from the ultrasonic transducer 11 toward the living tissue to perform radial scanning, and the ultrasonic pulse receives an echo signal reflected from the living tissue, and receives the echo signal. The ultrasonic image signal generated by the signal processing circuit is transmitted wirelessly to the ultrasonic observation apparatus.
[0029]
As a result, an ultrasonic tomographic image is displayed on the screen 51 of the display device, which is an external device, as shown in FIG. At this time, since the capsule portion 10 is prevented from being rotated, the affected part images 52 and 53 displayed at positions away from the center of the screen 51 rotate and move on the screen 51. It is displayed at a predetermined position in a stationary state without any change.
[0030]
As described above, in the capsule portion provided with the ultrasonic vibrator, the ultrasonic vibrator rotates in the direction opposite to the rotation direction of the ultrasonic vibrator in conjunction with the drive motor for rotating the ultrasonic vibrator. The rotation of the capsule portion of the capsule ultrasonic endoscope can be prevented by providing the rotating weight that generates the inertial force that cancels the inertial force generated by the rotation of the capsule. As a result, the behavior of the capsule ultrasonic endoscope around the rotation axis during the ultrasonic observation is stabilized, and a good ultrasonic tomographic image in a stationary state can be obtained to perform ultrasonic diagnosis.
[0031]
6 and 7 relate to an application example of a rotating weight constituting the capsule ultrasonic endoscope of the first embodiment, FIG. 6 is a sectional view showing another configuration of the capsule ultrasonic endoscope, and FIG. FIG. 7 is a sectional view taken along line CC of FIG. 6.
As shown in FIGS. 6 and 7, in the capsule ultrasonic endoscope 6 of the present embodiment, the configuration of the capsule ultrasonic endoscope 1 and the rotary weight 61 of the first embodiment shown in FIGS. Is different.
[0032]
Specifically, the rotary weight 61 is composed of a cylindrical rotary portion 63 and an arc-shaped weight 64 fixed to the outer peripheral surface of the rotary portion 63 by bonding or the like. The rotating portion 63 is formed of a material having high rigidity such as stainless steel, and the weight 64 is formed of a material having a large specific gravity such as lead or tungsten. A through hole 63a is formed at the center of the rotating portion 63. The output rotating shaft 18a is arranged in the through hole 63a and screwed and fixed. It is integrally fixed to the shaft 18a.
[0033]
Therefore, the rotation of the rotation shaft 17 a of the drive motor 17 causes the output rotation shaft 18 a and the rotating weight 61 to rotate in the direction opposite to the rotation direction of the ultrasonic transducer 11. At this time, since the weight 64 is disposed in a part of the rotating part 63, the rotating weight 61 is rotationally accelerated in a direction opposite to the rotation direction of the ultrasonic vibrator 11, and the rotational direction of the ultrasonic vibrator 11 is rotated. Generates an inertial force in the opposite direction.
[0034]
Other configurations and operations are the same as those of the first embodiment, and the same members are denoted by the same reference numerals and description thereof will be omitted.
Thus, the same effect as in the first embodiment can be obtained.
[0035]
Note that the configuration of the oscillating weight is not limited to the above-described two embodiments. For example, as shown in FIG. 8 which illustrates another configuration of the oscillating weight of the capsule ultrasonic endoscope, as shown in FIG. The rotating weight 71 of the endoscope 7 is made up of a plurality of low specific gravity members 73 formed of, for example, stainless steel having a predetermined sectional shape, and a high specific gravity member 74 such as lead or tungsten having a higher specific gravity than the stainless steel. The capsule ultrasonic endoscope may be configured as a cylindrical member 72 integrally formed in a predetermined arrangement state, or as shown in FIG. 9 illustrating another configuration of the rotary weight of the capsule ultrasonic endoscope. 8, a large specific gravity member 83 is formed as a rotating weight 81, and a cylindrical member 82 in which a high specific gravity member 84, such as lead or tungsten, having a higher specific gravity than the stainless steel is partially disposed. To It may be.
Thus, the same operation and effect as those of the above-described embodiment can be obtained.
[0036]
(2nd Embodiment)
10 to 12 relate to a second embodiment of the present invention, FIG. 10 is a cross-sectional view illustrating the configuration of a capsule endoscope, FIG. 11 is a cross-sectional view taken along line DD of FIG. 10, and FIG. It is explanatory drawing which shows the observation in a body cavity with a mirror, and a treatment state. The capsule medical device according to the present embodiment is a capsule endoscope provided with an observation optical system in a capsule portion.
[0037]
As shown in FIGS. 10 and 11, the capsule section 110 of the capsule endoscope 101 includes a capsule body section 120, a rotating weight side cover 121, and an imaging element side cover 122. Inside the capsule section 110, an objective lens 111, a solid-state image sensor 112, and an optical frame 113, which constitute an observation optical system, for example, two chemical liquid tanks 114 and 115, a circuit board 116, a drive motor 117, and a rotating weight 19 and an LED lighting 141 serving as a light emitting element.
[0038]
In the capsule body 120, an objective lens 111, a solid-state imaging device 112, an optical frame 113, chemical solution tanks 114 and 115, a circuit board 116, and a drive motor 117 are arranged. An objective lens 111 and a solid-state imaging device 112 are mounted on the inner peripheral surface side of the optical frame 113. The optical frame 113 is disposed in a concave portion 142 formed on one end surface side of the capsule body 120. I have. Further, the LED lighting 141 is arranged on one end surface of the capsule main body 120.
[0039]
The imaging element side cover 122 is formed of a transparent member having predetermined optical characteristics, transmits the illumination light from the LED illumination 141, and forms a subject image from a subject illuminated by the illumination light. The solid-state imaging device 112 is guided to the imaging surface of the solid-state imaging device 112 through the objective lens 111. An unillustrated input / output cable of the solid-state imaging device 112 is connected to the circuit board 116.
[0040]
The chemical liquid tanks 114 and 115 are provided, for example, on the rear side of the imaging device 112 with the central axis of the capsule unit 110 interposed therebetween. A circuit board 116 is disposed behind these chemical liquid tanks 114 and 115. Predetermined liquid medicines for treating the affected part are stored in the liquid medicine tanks 114 and 115, respectively. The chemicals stored in the chemical tanks 114 and 115 are ejected from the respective nozzles 131 and 132 based on a control signal output from the circuit board 116.
[0041]
At predetermined positions of the capsule main body 120, nozzle holes 133 and 134 are formed, which are flow paths through which the chemicals ejected from the nozzles 131 and 132 pass. The nozzle holes 133 and 134 are formed at positions that are line-symmetric with respect to the longitudinal center axis of the capsule body 120, and are inclined, for example, at approximately 45 ° with respect to the longitudinal center axis of the capsule portion 110. Is formed.
[0042]
In addition, openings 135 and 136 communicating with the nozzle holes 133 and 134 are formed at predetermined positions of the imaging element side cover 122 constituting the capsule unit 110. Therefore, the chemicals ejected from the nozzles 131 and 132 pass through the nozzle holes 133 and 134 and are ejected outward from the respective openings 135 and 136.
[0043]
The drive motor 117 is integrally attached and fixed to the other end surface of the capsule main body 120 by a screw (not shown). The drive motor 117 has a rotation shaft 117a at a position coinciding with the central axis in the longitudinal direction of the capsule section 110, and the rotation shaft 117a is rotated by supplying electric power. A rotary weight 19 similar to the configuration shown in FIGS. 1 and 3 of the first embodiment is directly attached and fixed to the rotary shaft 117a.
[0044]
The circuit board 116 controls the solid-state imaging device 112 and transmits an electric signal output from the solid-state imaging device 112 to an observation device (not shown) by a wireless transmission circuit or an external device (not shown). A control circuit for receiving the instruction signal and controlling the solid-state imaging device 112, the drive motor 117, and the nozzles 131 and 132 and the like are provided.
[0045]
The capsule endoscope 101 opens the nozzles 131 and 132 and the nozzle holes 133 and 134 by bonding the rotating weight side cover 121, the imaging element side cover 122, and the capsule body 120 with a water-resistant adhesive. The inside excluding the holes 135 and 136 is in a liquid-tight state.
[0046]
The operation of the capsule endoscope 101 configured as described above will be described.
As shown in FIG. 12, when the capsule endoscope 101 is introduced into the body cavity 150 of the patient, an operator transmits a photographing instruction signal to the capsule endoscope 101, thereby the solid-state imaging device 112 In the, the subject image formed on the imaging surface is photoelectrically converted, and the imaging signal is subjected to signal processing by a signal processing circuit on the circuit board 116, and then transmitted to an external endoscope observation device via a wireless transmission circuit. Sent to. Thus, an endoscope image is displayed on the screen of the display device of the endoscope observation device.
[0047]
The operator observes the endoscope image displayed on the screen. At this time, if the treatment section 151 is found, the positional relationship between the opening 135 or the opening 136 and the treatment section 151 is determined. Here, when the positional relationship between the opening 135 or the opening 136 and the treatment section 151 is not the opposite positional relationship, a rotation drive instruction signal for rotating the drive motor 117 of the capsule endoscope 101 is output.
[0048]
Then, in the capsule endoscope 101, when the rotation of the drive motor 117 is started, an inertial force is generated with respect to the central axis in the longitudinal direction of the capsule section 110, for example, as indicated by an arrow C, and the capsule body section 110 Rotate around the central axis in the longitudinal direction. That is, the positional relationship between the opening 135 or the opening 136 and the treatment section 151 changes.
[0049]
Here, the operator performs an on / off operation of the drive motor 117 by appropriately outputting a rotation drive instruction signal while observing the endoscope image displayed on the screen. When the direction of the opening 135 or 136 formed in the capsule body 110 is adjusted to the positional relationship in which the treatment section 151 is opposed to the opening, the liquid instruction to eject the liquid medicine from the opening 135 or the opening 136. Output a signal. Then, as shown by the arrow D from the opening 135 or the opening 136, a treatment in which the chemical 152 in the chemical tank 114 or the chemical tank 115 is sprayed on the treatment section 151 can be performed.
[0050]
In this manner, by disposing the rotating weight that rotates by driving the drive motor inside the capsule portion, the rotation angle of the capsule portion located in the body cavity with respect to the longitudinal center axis can be freely changed. As a result, for example, a medical solution is effectively sprayed on the treatment section, thereby greatly improving the medical effect.
[0051]
In this embodiment, the oscillating weight has the same configuration as the oscillating weight shown in FIGS. 1 to 3 of the first embodiment. However, this oscillating weight is replaced with the oscillating weight of FIGS. 6 to 9 of the first embodiment. The same operation and effect can be obtained even with the rotary weight having the configuration shown in FIG.
[0052]
It should be noted that the present invention is not limited to only the above-described embodiments, and various modifications can be made without departing from the spirit of the invention.
[0053]
[Appendix]
According to the above-described embodiment of the present invention, the following configuration can be obtained.
[0054]
(1) In a capsule medical device for performing a diagnosis or a treatment by introducing a capsule portion into a body cavity,
A capsule medical device provided with a working state adjusting means for adjusting a diagnosis state or a treatment state in a body cavity to an optimum state in the capsule part.
[0055]
(2) The work condition adjusting means includes:
A drive motor arranged in the capsule portion,
2. The capsule medical device according to claim 1, comprising: a rotary weight rotated by the drive motor.
[0056]
(3) When the capsule unit has an ultrasonic vibrator rotated by the drive motor,
3. The capsule medical device according to claim 2, wherein a rotation direction reversing mechanism for rotating the rotary weight in a direction opposite to a rotation direction of the ultrasonic transducer is provided between the drive motor and the rotary weight.
[0057]
(4) When the capsule portion has an observation optical system and a chemical liquid tank for filling a chemical liquid and a nozzle for ejecting the chemical liquid from the chemical liquid tank,
3. The capsule medical device according to claim 2, wherein the oscillating weight is directly attached to a rotating shaft of the drive motor.
[0058]
(5) A capsule ultrasonic wave introduced into a body cavity in which an ultrasonic transducer for transmitting and receiving ultrasonic waves to obtain an ultrasonic tomographic image of a body cavity and a drive motor for rotating the ultrasonic transducer are arranged in a capsule portion. In an endoscope,
In the capsule part,
A rotation direction reversing mechanism that is connected to the drive motor and rotates in a direction opposite to the rotation direction of the drive motor;
A capsule ultrasonic endoscope provided with a rotating weight rotated by the rear part of the rotating direction reversing machine.
[0059]
(6) An observation optical system for obtaining a captured image of the inside of the body cavity, a medicinal solution tank storing the medicinal solution, and a nozzle for ejecting the medicinal solution stored in the medicinal solution tank are introduced into the body cavity in which the capsule portion is disposed. In a capsule endoscope,
In the capsule part,
A drive motor having a rotation axis;
A capsule endoscope provided with a rotary weight attached to a rotary shaft of the drive motor.
[0060]
【The invention's effect】
As described above, according to the present invention, it is possible to provide a capsule medical device capable of performing a target diagnosis, a treatment, and the like by setting a capsule portion in a body cavity to a desired working state.
[Brief description of the drawings]
FIGS. 1 to 5 relate to a first embodiment of the present invention, and FIG. 1 is a cross-sectional view illustrating a configuration of a capsule ultrasonic endoscope. FIG. 2 is a cross-sectional view taken along line AA of FIG. FIG. 3 is a cross-sectional view taken along the line BB of FIG. 1; FIG. 4 is a diagram illustrating a state of observation inside a body cavity by a capsule ultrasonic endoscope; FIG. 5 is displayed on a screen obtained by the capsule ultrasonic endoscope; FIGS. 6 and 7 relate to an application example of a rotating weight constituting a capsule ultrasonic endoscope of the first embodiment, and FIG. 6 is a view illustrating capsule ultrasonic endoscopy. FIG. 7 is a cross-sectional view showing another configuration of the mirror. FIG. 7 is a cross-sectional view taken along the line CC of FIG. 6. FIG. 8 is a view for explaining another configuration of the rotary weight of the capsule ultrasonic endoscope. FIGS. 10 to 12 relate to a second embodiment of the present invention, and FIGS. 10 to 12 show the inside of a capsule. FIGS. FIG. 11 is a cross-sectional view for explaining the configuration of the mirror. FIG. 11 is a cross-sectional view taken along the line DD in FIG. 10. FIG. 12 is an explanatory view showing the state of observation and treatment in a body cavity by a capsule endoscope. FIG. 13 to FIG. FIG. 14 is a cross-sectional view illustrating a configuration of a capsule ultrasonic endoscope according to a conventional example. FIG. 14 is a view illustrating a state of observation in a body cavity by the capsule ultrasonic endoscope. FIG. 15 is obtained by a capsule ultrasonic endoscope. For explaining an ultrasonic tomographic image displayed on a screen to be displayed
DESCRIPTION OF SYMBOLS 1 ... Capsule ultrasonic endoscope 10 ... Capsule part 11 ... Ultrasonic vibrator 13 ... Vibrator shaft 15 ... Slip ring 16 ... Encoder 17 ... Driving motor 18 ... Rotation direction reversing mechanism part 19 ... Rotating weight 20 ... Capsule body part 21: vibrator cover 22: body cover

Claims (2)

In a capsule medical device for introducing a capsule part into a body cavity and performing diagnosis or treatment,
A capsule type medical device, wherein a working state adjusting means for adjusting a diagnosis state or a treatment state in a body cavity to an optimum state is provided in the capsule part. The work condition adjusting means includes:
A drive motor arranged in the capsule portion,
The capsule medical device according to claim 1, further comprising: a rotating weight rotated by the driving motor.

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