JPH0361452B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an ultrasonic diagnostic apparatus having an ultrasonic probe in an insertion section.

[Technical background of the invention and its problems]

Conventionally, a diagnostic method is known in which an ultrasound cross-sectional image of an organ is obtained using an ultrasound probe provided on an endoscope introduced into a body cavity. In this case, if an air phase is present between the ultrasound probe and the organ, the transmission of ultrasound waves will be insufficient, making it impossible to obtain a good diagnostic image. Therefore, in order to remove the air layer around the ultrasound probe, the ultrasound probe is surrounded by a balloon, the balloon is inflated with liquid, and the balloon is brought into close contact with the wall inside the body cavity.

However, in this method using a balloon, the balloon often does not necessarily come into close contact with the entire wall surface of the body cavity, and is therefore inferior in reliability. In particular, when this method is used within the stomach, its drawbacks become noticeable.

[Purpose of the invention]

The present invention was made with attention to the above circumstances, and
The purpose is to provide an ultrasonic diagnostic device in which the ultrasonic medium water reaches the ultrasonic probe and smoothly fills the space between the ultrasonic probe and the object to be examined. It is in.

[Summary of the invention]

The present invention provides an ultrasonic probe and a water inlet for sending out ultrasonic medium water in the insertion section, and at least part of the water inlet is located within the range occupied by the ultrasonic probe in the longitudinal axis direction of the insertion section. This is an ultrasonic diagnostic device characterized in that a.

Further, the present invention includes an ultrasonic probe in the insertion section;
The ultrasonic diagnostic apparatus is characterized in that a water inlet for sending out ultrasonic medium water is provided, and the water inlet is provided with means for weakening the outflow force of the ultrasonic medium water.

[Embodiments of the invention]

Embodiments of the present invention will be described below. 1 to 7 show a first embodiment. Reference numeral 1 in FIG. 1 indicates a first endoscope as an example of an ultrasonic diagnostic apparatus. 2 is a second endoscope, 3 is a puncture needle, and in this Figure 1, the subject is given both endoscopes 1 and 2, and, for example, the puncture needle 3 is inserted into the body of the pancreas. It shows the place. Note that the target organ for ultrasonic puncture using this ultrasonic diagnostic apparatus is the stomach or its surrounding organs.

FIG. 2 shows the first endoscope 1 and its peripheral equipment. That is, in addition to the first endoscope 1, it includes a light source device 4, a water tank 5, an ultrasonic observation device 6, and a water pump 7. The first endoscope 1 includes a long insertion section 8 to be inserted into a living body cavity, an operation section 9 connected to the proximal end of the insertion section 8, and an eyepiece section 10 provided on the operation section 9. Consisting of a universal cord 11 and a connector 12 provided at the extending end of the universal cord 11, the connector 1
2 is connected to a light source device 4.
The insertion section 8 is formed by connecting a distal end portion 15 to the distal end of a flexible tube 13 via a curved tube 14. The outer skin of the flexible tube 13 is made of, for example, urethane resin, and its outer surface is coated with a slippery urethane coating material to make it slippery. curved pipe 1
Reference numeral 4 has a core material formed by connecting a plurality of curved pieces 16, and a waterproof rubber tube 17 as an outer skin is fitted around the outer periphery of the core material. The main body of the tip portion 15 is made of a hard material, and an ultrasonic probe 18 is provided on the lower side surface thereof. This ultrasonic probe 18 is attached with a damper material 19 interposed therebetween, and a signal cable 20 is connected thereto. This signal cable 20 passes through the insertion section 8 and the operation section 9, is led out of the endoscope 1, and is electrically connected to the ultrasonic observation device 6. This ultrasonic observation device 6 includes an ultrasonic probe 18
The ultrasound images received are displayed on the screen. By the way, as shown in FIG. 2, the diagnostic width l1 of the ultrasound probe 18 is 30 mm. The longer this diagnostic width l1 is, the more desirable it is because a wider range can be observed and diagnosed, but on the other hand, the hard tip 15
The length of the must be made that much longer,
Normally, as mentioned above, around 30 mm is appropriate because it becomes difficult to pass through the examinee's throat. Furthermore, the higher the frequency of the ultrasonic probe 18, the better the resolution, but the distance the ultrasonic waves reach becomes shorter.
The depth of diagnosis becomes shallow. Therefore, in this example, the depth is 5 MHz to 7.5 MHz, and the depth that is best visualized at that time is l4 = 20 to l5 = 30.
It will be around mm.

In addition, the ultrasonic probe 18 and the damper material 19
It is surrounded by signal cables 20 in three directions around it, as shown in FIG. As shown in FIG. 3, the cross-sectional shape of the tip portion 15 is a rectangle with rounded corners. Compared to a circular shape, this shape has a smaller cross-sectional area when the same internal organs are placed, and can reduce pain for the subject. Further, the tip portion of the tip portion 15 is approximately
It is cut out at a 45 degree angle. This inclined surface 21 is provided with an observation window 22, an air/water supply nozzle 23 directed toward the observation window 22, and an illumination window 24.

On the other hand, an illumination lamp 25 is installed in the light source device 4, and the light emitted from this illumination lamp 25 is
The light is emitted from the illumination window 24 through the light guide fiber 26 of the endoscope. In addition, the observation window 22
The optical image that enters the objective optical system 27 from above is observed at the eyepiece 10 through an image guide fiber 28 provided within the insertion section 8, as shown in FIG. The observation optical system consisting of the observation window 22 and the objective optical system 27 has a viewing direction of 45 degrees with respect to the longitudinal direction of the insertion section 8, and a viewing angle of 150 degrees.
It is now possible to observe a range from 30 degrees above the front to 30 degrees below and backwards. by the way,
The distal end portion 15 of the first endoscope 1 serving as an ultrasonic diagnostic apparatus is provided with an ultrasonic probe 18, and therefore becomes considerably long. Therefore, it is extremely difficult to insert the tube into the descending limb of the duodenum if the front cannot be seen. In addition, since the direction of ultrasound examination is to the side (downward in this example), it is important to be able to see the side and back side in order to maintain orientation and know which side you are looking at. . This is necessary when performing ultrasound diagnosis of the stomach wall, for example, when examining the degree of cancer progression, or when accurately facing the ultrasound probe 18 to a lesion. Note that it is desirable that the viewing angle is 120 degrees or more.

The light source device 4 is further provided with an air pump 30. This air supply pump 30 pressurizes the inside of the water supply tank 5 described above, and also
It is connected to an air supply pipe line 31 piped inside. Further, a water supply pipe line 32 is installed inside the first endoscope 1, and one end of this water supply pipe line 32 is immersed in water in the water supply tank 5. The other end of the water supply pipe 32 merges with the other end of the air supply pipe 31 and communicates with the air and water supply nozzle 23 . The air supply pipe line 31 and the water supply pipe line 32 are controlled to open and close by an air/water supply switching valve 33 provided in the operating section 9, so that it is possible to select between air supply and water supply to the air and water supply nozzle 23. A suction changeover valve 34 is provided in the operating section 9 in parallel with the air/water supply changeover valve 33, and is adapted to control the suction operation through a suction channel (not shown).

As shown in FIG. 2, another water passage 35 is piped to the first endoscope. One end of this water passage 35 is connected to a connection mouthpiece 36 provided on the operating section 9, and the other end is connected to a plurality of, for example, three, water supply ports 37 provided on the distal end portion 15 of the insertion section 8. These water supply ports 37 are arranged in a straight line along the longitudinal axis of the insertion section 8, and are installed on the upper side opposite to the installation side of the ultrasonic probe 18. In addition, the installation range of the water inlet 37... is the ultrasonic probe 1.
It overlaps with diagnostic width 1 of 8. Each water supply port 37 is formed into a wide-mouthed tapered shape. Therefore, the deaerated water does not gush out forcefully.

As shown in FIG.
When you step on the button, the pump 38 operates and the deaerated water tank 41
Degassed water is supplied from the supply tube 41a to the water passage 35.

By the way, ultrasonic waves for ultrasonic diagnosis are extremely attenuated and cannot be transmitted in the air, so the ultrasonic probe 18 must be placed in water to transmit them, but ordinary water does not penetrate air. Contains a lot and is not suitable. Therefore, deaerated water produced by sufficiently boiling is used. However, it is not necessary to fill the entire stomach with deaerated water, and it is sufficient to submerge the ultrasound probe 18 in water as shown in FIG. It is desirable that the particles flow around the side circumference of the tip portion 15 and accumulate quickly without scattering. Otherwise, air will easily get mixed in with the degassed water. In addition, if the degassed water flows over the entire length of the ultrasound probe 18 when the ultrasound probe 18 is placed on the stomach wall, it is possible to easily obtain good images over the entire diagnostic range. . In this embodiment, since the water inlets 37 are provided at positions overlapping (parallel to) the diagnostic width l1 of the ultrasonic probe 18, the water inlets 37...
7. Immediately send the degassed water to the ultrasonic probe 1.
Reach the 8th plane. Further, since a plurality of water supply ports 37 are provided, degassed water can easily reach the entire length of the ultrasonic probe 18. Furthermore, since the outlet of the water supply port 37 is tapered and wide, the degassed water does not gather force and spout out, and the water is gently transmitted along the side circumference of the tip 15 to the surface of the ultrasonic probe 18. can be immersed. Note that when the water pump 7 is in use, the water pump 7 is directly electrically connected to the living body through deaerated water. Therefore, the water pump 7 is designed to be electrically safe so that the subject will not receive an electric shock.

On the other hand, an ultrasonic puncture needle guide port 42 consisting of a hole penetrating diagonally as shown in FIG. 43 is provided. This ultrasonic puncture needle guide port 42 faces into the inspection plane by the ultrasonic probe 18, and is inclined at about 50 degrees with respect to the longitudinal axis direction of the insertion section 8. For this reason,
The needle body 54 (described later) of the puncture needle 3 that has passed through the ultrasound puncture needle guide port 42 is located in the target area where the ultrasound image is clearest, that is, l from the surface of the ultrasound probe 18.
It is designed to reach near the center of the diagnostic width l1 at a distant front point of about 25 mm. The inner diameter of the ultrasonic puncture needle guide port 42 differs depending on the outer diameter of the puncture needle 3. Since the tapered portion 43 is provided at the entrance of the ultrasound puncture needle guide port 42, the puncture needle 3 can be easily introduced into the ultrasound puncture needle guide port 42. Also,
The ultrasonic puncture needle guide port 42 is connected to the ultrasonic probe 18
It was placed on the tip side. Therefore, when trying to insert the puncture needle 3 into the ultrasonic puncture needle guide port 42,
There is no possibility of making a hole in the rubber tube 17. Furthermore, compared to providing the ultrasonic puncture needle guide port 42 closer to the user's hand than the ultrasonic probe 18, the length of the distal end portion 15 can be shortened, thereby reducing the pain of the subject. Further, the observation window 22 and the illumination window 24 were provided not on the distal end surface and upper surface of the distal end portion 15 as shown in FIGS. 4 and 5, but on the inclined surface 21 inclined downward at 45 degrees. Therefore, when the puncture needle 3 is inserted into the ultrasonic puncture needle guide port 42, the puncture needle 3 does not damage the observation window 22 or the illumination window 24.

On the other hand, as shown in FIG. 6, the second endoscope is a direct-viewing endoscope, and like the first endoscope 1, it has an operating section 9, an eyepiece section 10, and a universal cord 1.
1, a connector 12, a flexible tube 13, a curved tube 14, a tip 15, etc. However, the material of the outer skin of the flexible tube 13 is a Teflon tube different from that of the flexible tube 13 of the first endoscope 1. Furthermore, although not shown, similar to the first endoscope 1, an air supply pipe 3
1. A water supply pipe 32 is provided, and an air and water supply nozzle 23 is provided facing the observation window 22. Furthermore, a puncture needle insertion channel 44 is provided inside the insertion section 8 over the entire length from the operation section 9 . The insertion opening 45 has a cylindrical shape, into which the proximal hard part 46 of the puncture needle 3 is inserted. The length of the insertion port 45 is, for example, about 130 mm. Further, the distal end portion 15 has a storage opening 47 that passes through the distal end portion 15 in the longitudinal axis direction.
There is. The length of the storage port 47 is approximately 60 mm. The insertion port 45 and the storage port 47 are connected by a flexible tube 48 such as a Teflon tube, and when the insertion portion 8 is straightened, the insertion port 45 and the storage port 4
7. The flexible tube 48 is approximately straight. Therefore, the puncture needle 3 can be inserted from the operating section side. The inner diameter of the storage opening 47 and the flexible tube 48 is approximately 2 mm. A screw 49 is formed near the entrance side end of the insertion port 45, and this screw 49
A screw 50 is screwed into. Further, a click member 51 is provided on the opposite side of the screw 50, and a click member 51 is provided on the opposite side of the screw 50.
The click member 51 is provided so as to be movable forward and backward along the diameter line 5, and this click member 51 is urged inward by a spring 52. The opposite side of this spring 52 is locked with a lid 53.

By the way, the puncture needle 3 has a needle body 54, a soft sheath 55 with the needle body 54 attached to the tip, a proximal hard part 46 attached to the proximal end of the soft sheath 55,
It consists of a soft tube 56 attached to the tip of the hard part 6 on the proximal side and a cap 57 as a connection port for an instrument attached to the other end of the soft tube 56. The needle body 54 has an outer diameter of 0.4 to 0.6.
It is approximately 50mm long and made of stainless steel. The soft sheath 55 is made of a Teflon tube, and the end of the needle body 54 is fitted inside the distal end of the soft sheath 55 and is bonded and fixed. Further, the end surface of the soft sheath 55 constitutes an abutment protrusion 58 . The outer diameter of this bulging protrusion is 1.8 mm or less. The length of the proximal hard part 46 is approximately 170 mm, and an annular V-groove 59 is provided around the entire circumference near the distal end of the proximal hard part 46. A plurality of lines 60 are further provided on the side peripheral surface of the hard portion 46 on the proximal side. line 6
0 is a shallow V-groove in which paint is poured, and the one on the most distal side matches the proximal end surface of the insertion port 45 when the V-groove 59 matches the click member 51 of the second endoscope 2. This is located at a point approximately 10 mm from the distal end surface of the hard portion 46 on the proximal side, not including the mouthpiece for connecting the soft sheath 55. That is, in the clicked state, the fitting length between the insertion port 45 and the hard portion 46 on the proximal side is 10 mm. The second line 60 is located 50 mm from the first line, and thereafter, seven lines 60 are provided at 10 mm intervals, making a total of nine lines 60. That is, the second line 60 indicates that the needle body 54 has protruded 50 mm from the click position, and almost the entire length of the needle body 54 has come out from the storage opening 47. This indicates that approximately 120 mm protrudes from endoscope 2.
The flexible tube 56 is made of a thick silicone tube, and the cap 57 is provided with a taper for a syringe as defined by LIS. A syringe 61 as a suction device is connected to the cap 57. In addition, a suction passage 62 is provided along the entire length of the puncture needle 3, and a suction passage 62 is provided along the entire length of the puncture needle 3.
The negative pressure generated by 1 reaches the tip of the needle body 54. A protective sleeve 63 shown in FIG. 7 can be fitted onto the needle body 54. The outer diameter of the protective sac 63 is approximately 1.5 mm. The protective sac 63 is fitted when the puncture needle 3 is inserted.
It is removed before inserting the second endoscope 2 into the body cavity.

Next, the operation of the first embodiment will be explained.

First, the subject is given the minimum amount of anesthesia necessary and drugs are administered to stop peristalsis. Then, the water passage 35 of the first endoscope 1 as an ultrasonic diagnostic apparatus whose insertion section 8 has been sufficiently disinfected is filled with degassed water in advance, and the endoscope 1 is inserted radially. Observation window 2
Look closely at the inside of the stomach that can be seen from 2 and use the ultrasound probe 18.
After determining the position where the ultrasound probe 18 is to be applied and applying the ultrasound probe 18 to that area, an ultrasound diagnosis is performed while the foot switch 40 is turned on and degassed water is flowed to guide the ultrasound probe to the puncture point of the lesion. At this time, it is preferable to display the puncture position or puncture direction on the display of the ultrasound observation device 6 in advance.

Next, the insertion section 8 of the second endoscope 2, the inside of the puncture needle insertion channel 44, and the puncture needle 3 are sufficiently sterilized, the insertion section 8 is straightened, and the needle body 54 is covered with the protective sac 63. The puncture needle 3 is inserted into the puncture needle insertion channel 44. After the click is activated, the puncture needle 3 is further pushed out from the second endoscope 2, the protective sac 63 is removed, and the puncture needle 3 is returned to the click position. In this way, the needle body 54
This prevents damage to the flexible tube 48. At this time, the needle body 54 is located in the storage opening 47. The proximal hard part 46 is locked to the insertion port 45 using the screw 50. This prevents the needle body 54 from inadvertently protruding from the storage opening 47 during insertion and injuring the subject. Since the flexible tube 13 and the curved tube 14 are covered with a soft sheath 55, the flexible tube 1
Even if the puncture needle 3 or the curved tube 14 is bent, the puncture needle 3 will not break. Note that at this time, the position of the needle body 54 is slightly moved back and forth inside the storage opening 47, but the needle body 54 is located inside the storage opening 47.
It will never come out. Connect the syringe 61 to the mouthpiece 57 with the syringe 61 inserted, and give the subject a second injection.
Insert the endoscope 2. At that time, the first endoscope 1
If the flexible tubes 13 of the second endoscope 2 and the second endoscope 2 are both coated with the same coating, the flexible tubes 13 may touch each other and the position of the ultrasound probe 18 may be greatly shifted. In the embodiment, the material of the outer cover is changed, and the flexible tube 1 of the second endoscope 2 is
This doesn't happen because 3 is made of Teflon, which has good slipperiness. In other words, if the materials are different, it will be difficult to stick to them. The material of the outer skin may be selected by changing the above example. After the second endoscope 2 has been inserted to a certain extent, unnecessary lights of the first endoscope 1 are turned off. This will eliminate the glare.

Next, insert the storage port 47 into the ultrasonic puncture needle guide port 4.
It is also an extension of 2. At this time, the distance between the first endoscope 1 and the second endoscope 2 is preferably about 60 mm. Therefore, loosen the screw 50 and insert the puncture needle 3 into the second position.
Push it out little by little from the endoscope 2. When the needle body 54 is pushed out about 55 mm, it completely comes out of the storage opening 47. Further, the puncture needle 3 is pushed out, and the needle body 54 is inserted into the tapered part 4.
3, and further insert it into the ultrasonic puncture needle guide port 42. If the tip end of the needle body 54 enters the ultrasonic puncture needle guide port 42 while the rear side of the needle body 54 is in the storage port 47, the needle body 54 will move when the first endoscope 1 and the second endoscope 2 move.
Please be careful as it may break. During the puncture, administer general anesthesia as necessary to prevent the target from moving and minimize the effects of breathing. The puncture needle 3 is further pushed out, and the tip of the needle body 54 finally penetrates the stomach wall and reaches the pancreas, capturing the lesion. At that time, even if the puncture needle 3 is pushed out too far, the abutment protrusion 58 hits the entrance of the ultrasound puncture needle guide port 42, so the tip of the needle body 54 passes through the examination area and advances into the blind area. It is safe without any problems. Here, after locking the screw 50 to prevent the puncture needle 3 from moving forward or backward, the syringe 61 is operated to suction and biopsy the lesion. Soft tube 56
Due to the presence of the syringe 61, even when the syringe 61 is operated, the movement is not transmitted to the proximal hard part 46 or the needle body 54. Then, the screw 50 is released, the puncture needle 3 is quickly pulled out to the click position, and the needle body 54 is stored in the storage opening 47. A click feeling indicates that the needle body 54 has been stored in the storage opening 47. The second endoscope 2 and the first endoscope 1 are removed. Note that since the needle body 54 is extremely thin, puncturing will not cause major bleeding. In addition, bacteria in the stomach attaches to the pancreas, which can be dealt with by administering antibiotics.

A second embodiment is shown in FIGS. 8 to 10.

In this embodiment, the distal end portion 15 of the first endoscope 1 as an ultrasonic diagnostic device is formed into a hemispherical shape to improve insertability. Also, the viewing direction is side-viewing, and it is used when not inserted into the duodenum. In other words, the observation window 22 and the illumination window 24 are
It is provided on the lower side of 5. Additionally, a tapered portion 43 is provided at the entrance of the ultrasonic puncture needle guide port 42;
This tapered portion 43 is arranged slightly above the distal end surface, while the observation window 22 and the illumination window 24 are provided on the lower surface side and are spaced apart.
2. Damage to the lighting window 24 is avoided as much as possible.

A third embodiment is shown in FIG. In this embodiment, a first endoscope 1 as an ultrasonic diagnostic device is provided with a plurality of ultrasonic puncture needle guide ports 42,
Further, the inspection direction of the ultrasound probe 18 is tilted toward the ultrasound puncture needle guide port 42 side. By tilting the inspection direction of the ultrasonic probe 18 diagonally forward in this way, the length of the tip 15 can be shortened.
The patient's pain is reduced. Furthermore, the guiding directions of the ultrasonic puncture needle guide ports 42, 42 are different, and by selecting one of the ultrasonic puncture needle guide ports 42, the leading direction of the puncture needle 3 can be selected. In other words, in this type of endoscopic ultrasonic examination, it is difficult to freely control the ultrasonic probe 18 to aim at the lesion. Therefore, it is necessary to accurately direct the ultrasound puncture needle guide port 42 toward the lesion, but this may result in poor visualization. Therefore, the ultrasonic puncture needle guide port 42
This increased the degree of freedom in orientation and improved the success rate of puncture.

A fourth embodiment is shown in FIG. In this embodiment, a water-permeable porous membrane 64 is provided at the water inlet 37 of the first endoscope 1 as an ultrasonic diagnostic device, and degassed water is allowed to seep out by passing through the porous membrane 64. This is what I did. In this way, the degassed water can easily reach the side peripheral surface of the tip portion 15 and reach the surface of the ultrasonic probe 18 in a good manner.

A fifth embodiment is shown in FIG. In this embodiment, the ultrasonic probe 18 of the first endoscope 1 as an ultrasonic diagnostic device is installed close to one side, and the water supply port 37 is provided next to the open space so as to face the examination direction of the ultrasonic probe 18. It is something that For this reason,
Degassed water tends to accumulate between the ultrasound probe 18 and the stomach wall, and the visualization is that much better. Although not shown, an ultrasonic puncture needle guide port 42 is also provided along with the ultrasonic probe 18 to one side.

A sixth embodiment is shown in FIG. In this embodiment, a V-shaped lateral groove 65 is provided along the left and right sides on the top surface of the distal end 15 of the first endoscope 1 as an ultrasonic diagnostic device, and a water passage 35 is opened in the side wall of the lateral groove 65. It is something that Therefore, the degassed water flows from side to side in the horizontal groove 65 and reaches the ultrasonic probe 18 along the side circumferential surface of the tip portion 15 .

15 and 16 show a seventh embodiment of the invention. In this embodiment, the water supply port 37 of the first endoscope 1 as an ultrasonic diagnostic device is formed in the shape of a long groove, and its longitudinal direction is arranged parallel to the longitudinal direction of the distal end portion 15. be. Moreover, it is installed on the opposite side to the installation position of the ultrasonic probe 18. That is, it is provided on the upper side surface of the tip portion 15. Further, the water passage 35 is provided within the tip portion 15 so as to be located between the ultrasonic probe 18 and the water supply ports 37 . And, it is connected to the bottom wall position at the center of the water supply port 37. However, water supply port 3
It may be connected to the side wall of 7.

An eighth embodiment is shown in FIG. This is an ultrasonic puncture needle guide port 42 and a guide member 73 having a tapered portion 43 in the first endoscope 1 as an ultrasonic diagnostic device, which are detachably attached to the distal end portion 15. That is, the tip portion 15 is provided with a screw hole, and the guide member 73 is screwed by the screw 74.
is fixed. If the thickness of the needle body 54 of the puncture needle 3 is thin, the strength will be weak, and if it is thick, damage to the subject will become a problem. Furthermore, when puncturing hard cancers, a thick and short needle is effective since this is hard. In this way, the thickness of the needle body 54 is preferably changed depending on the case. At that time, if a guide member 73 having an inner diameter of the ultrasonic puncture needle guide port 42 that is enlarged to the thickness of each needle body 54 is provided, a first It is economical because there is no need to prepare several endoscopes 1.

Note that the ultrasonic probe 18 may be of an electronic sector scan type, and in this case, a wider range of inspection is possible.

〔Effect of the invention〕

As explained above, the present invention provides an ultrasonic probe and a water inlet for delivering ultrasonic medium water near the tip of the insertion section, and performs ultrasonic diagnosis by bringing the ultrasonic probe into contact with a target area. In the diagnostic device, the ultrasonic probe is provided on a part of the circumferential surface of the insertion section along the axial direction, and the water supply port is located on the circumference of the insertion section at a position facing the ultrasonic probe. Since the ultrasonic medium water is provided in the ultrasonic probe, the ultrasonic medium water easily reaches the ultrasonic probe and smoothly fills the gap between the ultrasonic probe and the object to be inspected.

Further, in the present invention, since the water supply port is provided with a means for weakening the outflow force of the ultrasonic medium water, even if the water supply amount is increased, the degassed water flows from the water supply port with force and is unrelated to the ultrasonic probe. It will not gush out anywhere. In other words, it can be smoothly sent to the ultrasound probe along the outer circumferential wall of the insertion section.

[Brief explanation of drawings]

FIG. 1 is a usage state diagram showing an embodiment of the present invention, FIG. 2 is a diagram schematically illustrating the configuration around the first endoscope, and FIG. 3 is along the line - in FIG. 2. 4 is a sectional view of the observation optical system at the distal end of the first endoscope, FIG. 5 is a sectional view of the illumination optical system at the distal end, and FIG. 6 is a sectional view of the illumination optical system at the distal end of the first endoscope. 7 is a cross-sectional view of the needle body portion of the puncture needle, and FIG. 8 is a cross-sectional view of the tip of the first endoscope in the second embodiment. 9 is a sectional view of the observation optical system at the tip, FIG. 10 is a sectional view of the illumination optical system at the tip, and FIG. 11 is a sectional view of the illumination optical system at the tip. A sectional view of the distal end of the endoscope, FIG. 12 is a cross-sectional view of the distal end of the first endoscope of the fourth embodiment, and FIG. 13 is a cross-sectional view of the distal end of the first endoscope of the fifth embodiment. 14 is a cross-sectional view of the first endoscope of the sixth embodiment; FIG. 15 is an explanatory diagram of the configuration of the distal end of the first endoscope of the seventh embodiment; FIG. 16 is a longitudinal sectional view thereof, and FIG. 17 is a sectional view of the distal end portion of the second endoscope of the eighth embodiment. 1...First endoscope, 2...Second endoscope, 3
... Puncture needle, 8 ... Insertion part, 15 ... Tip part, 1
8... Ultrasonic probe, 35... Conduit, 36...
... Water passage, 64... Porous membrane.

Claims (1)

[Scope of Claims] 1. An ultrasonic diagnostic device that includes an ultrasonic probe and a water inlet for sending out ultrasonic medium water near the tip of the insertion section, and performs ultrasonic diagnosis by bringing the ultrasonic probe into contact with a target area. The ultrasonic probe is provided on a part of the circumferential surface of the insertion section along the axial direction, and the water supply port is provided on the circumference of the insertion section at a position facing the ultrasonic probe. An ultrasonic diagnostic device characterized by: 2. The ultrasonic diagnostic apparatus according to claim 1, wherein the water supply port and the ultrasonic probe are each formed into an elongated shape, and their longitudinal directions are parallel to each other. 3. The ultrasonic diagnostic apparatus according to claim 1 or 2, wherein the water supply port is divided into a plurality of parts. 4. In an ultrasonic diagnostic device in which the insertion portion is provided with an ultrasonic probe and a water inlet for sending out ultrasonic medium water, the water inlet is provided with means for weakening the outflow force of the ultrasonic medium water. An ultrasonic diagnostic device featuring: 5. The ultrasonic diagnostic apparatus according to claim 4, wherein the means for weakening the outflow force of the ultrasonic medium water is formed such that the water inlet is made wider on the outside. 6 The water supply port has an opening formed in a groove shape,
6. The ultrasonic diagnostic apparatus according to claim 5, wherein openings at both longitudinal ends of the water supply port are located on a side wall of the insertion section close to the ultrasonic probe. 7. The ultrasonic diagnostic apparatus according to claim 4 or 5, wherein the means for weakening the outflow force of the ultrasonic medium water comprises covering the water inlet with a water-permeable porous member. 8. The ultrasonic diagnostic apparatus according to claim 4, 5, 6, or 7, wherein the water supply port is divided into a plurality of parts.