JPH074372B2 - Ultrasound endoscope - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to improvement of an ultrasonic endoscope in which an ultrasonic transducer is attached to a distal end hard portion.

[Prior Art] Generally, for example, an ultrasonic transducer that transmits and receives ultrasonic waves is attached to a distal end hard portion of an insertion portion of an endoscope, and the ultrasonic transducer of the distal end hard portion is used to scan ultrasonic waves to, for example, a body cavity. 2. Description of the Related Art An ultrasonic endoscope that obtains a tomographic image of a wall is known.
By the way, in this type of ultrasonic endoscope, when the ultrasonic transducer is attached to the distal end hard portion, the rear end side of the distal end hard portion is cut out, and the ultrasonic vibration is applied to the rear end side notch portion of the distal end hard portion. After fixing the child, the gap between the ends was filled with a resin such as an adhesive.

[Problems to be Solved by the Invention] In the conventional configuration, in the ultrasonic endoscope, when the ultrasonic transducer is attached to the distal end hard portion, the rear end side of the distal end hard portion is cut out, and this distal end is cut off. After fixing the ultrasonic transducer to the cutout part on the rear end side of the hard part, the gap at the end was filled with resin such as adhesive, so the gap was large and the part filled with adhesive etc. In many cases, when the separate insertion tube or the like is fixed to the fixed portion of the ultrasonic transducer, the separate insertion tube or the like is completely fixed by an adhesive. Therefore, after assembling the ultrasonic endoscope, it is difficult to separate the distal end hard part from a separate insertion tube or the like, and it is also difficult to remove the ultrasonic transducer from the distal end hard part. There was a problem that disassembling and repairing the endoscope would be difficult.

This invention makes it possible to easily separate a distal end hard portion that holds an ultrasonic transducer and a separate insertion tube, etc., and improve the workability of assembly work and repair work. It is intended to provide an endoscope.

[Means for Solving the Problems] As shown in FIGS. 1 (a) and 1 (b), the present invention is a concave ultrasonic transducer holding portion 5 for holding an ultrasonic transducer 2 on a hard tip portion 1. Also, the ultrasonic transducer holding portion 5 is formed with the ultrasonic transducer mounting notch 7 connected along the wiring direction of the signal cable 6 of the ultrasonic transducer 2, and the ultrasonic transducer 2 is The embedded member 8 is provided so as to fill the space formed by the cutout portion 7 in the state where the ultrasonic transducer holding portion 5 is mounted.

[Operation] After the ultrasonic transducer 2 is embedded in the concave ultrasonic transducer holding portion 5 of the hard tip portion 1, the ultrasonic transducer mounting notch 7 connected to the ultrasonic transducer holding portion 5 is formed. By inserting the embedding member 8 into the, the distal end hard portion 1 holding the ultrasonic transducer 2 and the separate insertion tube or the like are separably connected by means such as screwing. .

Embodiments Embodiments of the present invention will be described below with reference to the drawings.
2 to 21 show a first embodiment of the present invention. In FIG. 2, 11 is an ultrasonic endoscope. In this ultrasonic endoscope 11, a sub operation unit 14 is arranged between the hand operation unit 12 and the insertion unit 13. Further, a universal cord 15 is connected to the hand operation unit 12. An endoscope connector 16 is attached to the tip of the universal cord 15. An electric connector 18 is connected to the endoscope connector 16 via an electric cable cord 17. The endoscope connector 16 of the universal cord 15 is connected to a light source device (not shown), and the electrical connector 18 of the electric cable cord 17 is an ultrasonic observation device (not shown).
It is designed to be connected to.

Further, a distal end hard portion 21 is connected to the distal end of the flexible portion 19 of the insertion portion 13 via a curved portion 20. As shown in FIGS. 3 and 4, an array type ultrasonic transducer 23 is mounted inside the tip rigid portion main body 22 in the tip rigid portion 21. In this case, the tip end surface of the tip hard part main body 22 is formed in a state of being inclined at an appropriate angle θ (about 15 °) with respect to the direction orthogonal to the axial direction. As shown in FIG. 5, a suction / forceps port 24 is formed on the distal end surface of the distal end hard portion main body 22, and the distal end surface of the observation optical system 25 and the air supply / water supply nozzle 26 are arranged. Has been done. In addition, a concave portion 27 is formed on the side surface of the tip hard portion main body 22, and the ultrasonic transmitting / receiving surface 23a on the surface side of the ultrasonic transducer 23 is exposed to the outside on the inner bottom portion of the concave portion 27. Have been installed in. Further, in the recessed portion 27 of the tip hard portion main body 22, inclined chamfered portions 28a, 28b are formed on the front side surface and the rear side surface so that the distance between the front and the rear gradually increases from the inner bottom side toward the outer side.
When the electronic sector type vertical tomographic ultrasonic transducer 23 is attached to the tip hard part main body 22, the both sides of the recess 27 of the tip hard part main body 22 block the diagnostic range of the vertical tomography type. The chamfered portions 28a and 28b prevent the chamfering.

Further, the distal end hard part body 22 has a first holder 29 for holding the ultrasonic transducer 23 and a second holder for holding the observation optical system 25.
30 and 30 are provided respectively. In this case, the second holding body 30 is formed by the tip portion of the tip rigid portion main body 22, and the first holding body 29 is arranged behind the second holding body 30. Further, as shown in FIG. 6 to FIG. 9 and FIG. 12 to FIG. 14, the first holding member 29 has a relatively large opening area which is penetrated from the front end face side to the rear end face side. A hole 31 is formed, and this insertion hole 31
A treatment instrument insertion channel 32, a light guide of the observation optical system 25, an optical fiber bundle 33 such as an image guide, an air supply / water supply pipe 34, and the like are provided so as to be inserted therein.
Further, the insertion hole 31 is formed in a state of communicating with the ultrasonic transducer holding portion 35 that holds the ultrasonic transducer 23. In this case, the ultrasonic transducer 23 held by the ultrasonic transducer holding unit 35
As shown in FIG. 7, a partition plate 36 is disposed between and the insertion hole 31. Further, an adhesive having good thermal conductivity, for example, epoxy mixed with powder of SiC (silicon carbide) is provided on the joint surface between the ultrasonic oscillator 23 and the ultrasonic oscillator holding portion 35 of the first holding body 29. System adhesive "has been applied. Further, a cutout portion 37 is formed in a front portion of the ultrasonic transducer holding portion 35 in the first holding body 29 in a state of being connected to the ultrasonic transducer holding portion 35.
Are formed. An embedding member 38 is embedded in the cutout portion 37. This embedded member 38 is the first
The first holding member 29 is embedded in the notch 37 of the holding member 29 by the embedding member fixing screws 39, 39 shown in FIG.
It is fixed to.

On the other hand, the second holder 30 that holds the observation optical system 25 has the first
A tubular outer fitting portion 40 that is fitted onto the outer peripheral surface of the distal end portion of the holding body 29 of
And a screw insertion hole 41 is formed. The second holding body fixing screw 42 inserted into the screw insertion hole 41 is the screw hole 38a of the embedding member 38 of the first holding body 29.
It is designed to be screwed inside. Then, the second holding body 30 is attached / detached to / from the first holding body 29 side by the second holding body fixing screw 42 in a state where the outer fitting portion 40 is fitted onto the outer peripheral surface of the tip end portion of the first holding body 29. They are connected (dividable). In addition,
A seal member 43 is provided between the inner peripheral surface of the outer fitting portion 40 of the second holding body 30 and the outer peripheral surface of the distal end portion of the first holding body 29, and the second holding body fixing screw 42. An O-ring 44 is also interposed between the second holding body 30 and the second holding body 30, and the seal member 43 and the O-ring 44 are provided between the second holding body 30 and the first holding body 29 side. Watertightness and airtightness are ensured.

Further, the air / water feeding nozzle 26 disposed on the tip surface of the second holding body 30 is connected to the air / water feeding pipe 34 as shown in FIG. Further, the distal end surface of the observation optical system 25 is disposed between the suction / forceps port 24 and the air / water feeding nozzle 26 as shown in FIG. Also, the outlet of the air / water nozzle 26
As shown in FIG. 15, 26a is arranged so as to face the front end surface side of the observation optical system 25. Then, water, air or the like supplied through the air / water pipe 34 is blown out from the outlet 26a of the air / water nozzle 26 toward the front end surface side of the observation optical system 25. Furthermore, an optical fiber bundle 33 such as a light guide or an image guide forming the observation optical system 25.
As shown in FIG. 13, a ring-shaped light guide portion 33b is arranged at the outer peripheral portion of the image guide portion 33a, and the image guide portion 33a and the light guide portion 33b are provided in one optical fiber bundle 33, respectively. Has been formed. in this case,
An objective lens 45 is arranged on the front end surface of the observation optical system 25 so as to face the front end of the image guide portion 33a of the optical fiber bundle 33, and the light guide portion 33 of the optical fiber bundle 33 is arranged.
The tip portion of b is extended to the outer peripheral position of the objective lens 45. Then, the light guide portion 33 of the optical fiber bundle 33
The light sent via b is directed at an appropriate angle θ (about 15 °) from the tip end surface of the light guide portion 33b toward the mounting surface side of the ultrasonic transducer 23 with respect to the direction orthogonal to the axial direction of the tip rigid portion main body 22. ) It is designed to be irradiated in a tilted state.

In addition, ring-shaped balloon mounting grooves 46a, 46b are provided at both ends of the outer peripheral surface of the tip rigid portion main body 22. In this case, one balloon mounting groove 46a is formed on the outer peripheral surface of the second holding body 30, and the other balloon mounting groove 46b is formed on the outer peripheral surface of the first holding body 29. Further, O-ring portions are formed at both ends of the balloon 47 made of an elastic material having elasticity such as rubber. The O-rings of the balloon 47 are mounted in the balloon mounting grooves 46a and 46b, respectively, and the balloon 47 covers the entire outer peripheral surface of the hard tip body 22. Further, on the outer peripheral surface of the first holding body 29, a recessed communication groove 48 extending in the circumferential direction is formed between the mounting portion of the ultrasonic transducer 23 and the balloon mounting groove 46b. . Further, the first holding body 29
As shown in FIG. 16, a balloon water injection hole 49 having one end connected to the communication groove 48 and a balloon suction hole 50 having the same structure as the balloon water injection hole 49 are formed on the base end side of the balloon. . In this case, one ends of the balloon water injection pipe 51 and the balloon suction pipe 52 are connected to the other ends of the balloon water injection hole 49 and the balloon suction hole 50, respectively. Then, the balloon water injection pipe 51, the balloon water injection hole 49, and the balloon water injection port between the balloon water injection hole 49 and the communication groove 48.
Water is supplied to the inside of the communication groove 48 via 49a, and water is further supplied to the inside of the balloon 47 via this communication groove 48. At the time of supplying water into the balloon 47, the air inside the balloon 47 is connected to the communication groove. Suction is performed from the balloon suction port 50a between the balloon 48 and the balloon suction hole 50 through the balloon suction hole 50 and the balloon suction tube 52 in this order.

Further, the hand operation section 12 includes a bending operation knob 53 for bending the bending section 20 of the insertion section 13, an eyepiece section 54, an air / water supply piston 55,
Suction pistons 56 are provided respectively. in this case,
A release switch for remotely operating equipment such as a camera is provided near the air / water feeding piston 55 and the suction piston 56.
57 and a freeze switch 58 for stopping the image on the monitor TV of the ultrasonic observation apparatus, etc. are arranged respectively, and a treatment instrument insertion port 59 is provided in the vicinity of the connection portion with the sub operation portion 14 in a protruding manner. Has been done. Further, each piston body of the air / water feeding piston 55 and the suction piston 56 is mounted in the cylinder so as to be movable in the axial direction.
In this case, a water inlet, an air inlet, a water outlet, and an air outlet are formed in the cylinder of the air / water feeding piston 55, and an air discharge hole is formed in the piston body of the air / water feeding piston 55. There is. Then, in the state where the piston body of the air / water feeding piston 55 is held at the projected normal position, the water inlet and the water outlet are closed, and the air inlet and the air outlet are held open, respectively, and the piston body is held. The air discharge hole is maintained in a state of being communicated with the air passage in the cylinder of the air / water feeding piston 55. In addition, the air / water supply piston 55
When the piston body is pushed in from the projected normal position, the air inlet and the air outlet are switched to the closed state, and the water inlet and the water outlet are switched to the open state. Further, the cylinder of the suction piston 56 has an inlet and an outlet. Then, in the state where the piston body of the suction piston 56 is held in the projected normal position, the inlet and the outlet are held in a blocked state, and the piston body of the suction piston 56 is projected from the normal position. In the pushed-in state, the inlet and the outlet are switched to a communication state.

Further, as shown in FIG. 17, a water supply mouthpiece 60, a suction mouthpiece 61, an electric contact 62, etc. are respectively arranged on the outer peripheral surface of the endoscope connector 16, and the tip end surface of the endoscope connector 16 is A connecting end portion of the light guide portion 33b of the optical fiber bundle 33 and an air supply pipe 63 are provided on the respective ends. And
When the endoscope connector 16 is connected to the light source device, the connection end of the light guide portion 33b is connected to the light output end of the light source device, and the air supply pipe 63 is connected to the air supply mechanism in the light source device. It has become so. A water supply tank (not shown) is connected to the water supply mouthpiece 60, and a suction device (not shown) is connected to the suction mouthpiece 61. in this case,
The water supply mouthpiece 60 is connected to the water inlet of the air / water supply piston 55 via the water supply passage arranged in the universal cord 15, and the air supply pipe 63 is connected via the air supply passage in the universal cord 15. It is connected to the air inlet of the air / water feeding piston 55. Furthermore, the suction cap 61 is a universal cord 15
It is connected to the outlet of the suction piston 56 via the suction passage inside.

Then, the air sent from the air supply source in the light source device by the air supply / water supply piston 55 to the hand operation part 12 side through the endoscope connector 16 and the universal cord 15 is discharged from the air supply hole of the air supply / water supply piston 55. The normal position where it escapes to the outside through the air supply / water supply piston 55, and the exhaust hole of the air supply / water supply piston 55 is closed by the user's fingers, etc., and the air supply in the endoscope connector 16 and universal cord 15 The air sent to the hand operation part 12 side via the passage to the air supply / water supply pipe 34 side in the insertion part 13 or the air exhaust hole of the air supply / water supply piston 55 to the user's finger, etc. The air / water feeding piston 55 is pushed in the closed state to close the air feeding path in the universal cord 15, and the air sent from the air supply source in the light source device is fed to the water connector of the endoscope connector 16. Water tank connected to 60 The water supplied from this water supply tank is supplied to the air supply / water supply pipe 34 side in the insertion part 13 via the universal cord 15 and the water supply passage in the hand operation part 12 by introducing it into the water supply tank. It is designed so that it can be selectively switched to the water supply position. Further, the suction piston 56 is adapted to open and close the suction passage.

Further, a water supply switching cock 64, a suction switching cock 65 and a luer lock mouthpiece 66 are arranged in the sub operation portion 14, respectively. In this case, the water supply switching cock 64 and the suction switching cock 65 are respectively provided with a cock body and a rotating member rotatably mounted in the cock body. Further, the cock body of the water supply switching cock 64 is formed with first, second, and third connection ends, and the suction switching cock 65 is formed with fourth, fifth, and sixth connection ends, respectively. Has been done.
Then, the first connection end of the water supply switching cock 64 and the air supply /
The water outlet of the water supply piston 55, the second connection end and the air / water supply pipe 34, and the third connection end and the balloon water injection pipe 51 are connected, respectively, Between the fourth connection end of the suction switching cock 65 and the inlet of the suction piston 56, the fifth connection end and the treatment instrument insertion channel 32.
And the sixth connection end and the balloon suction tube 52 are connected to each other. Also, a water supply switching cock
The rotating member 64 includes a first connecting hole for connecting the first connecting end and the second connecting end, and the first connecting end and the second connecting hole via the first connecting hole. The second connecting portion connecting the first connecting end portion and the third connecting end portion in a state where the rotating member is rotated by a predetermined angle from the optical system cleaning position where the connecting end portion is connected. Connecting holes are formed respectively, and the first connecting end portion and the third connecting end portion are connected from the optical system cleaning position via the second connecting hole with the turning operation of the turning member. It is possible to selectively switch to the pouring position in the connected balloon. A connecting member is provided between the second connecting end of the water supply switching cock 64 and the air / water pipe 34, and the air / water pipe 34 and the air / water pipe 34 are connected via this connecting member. The water outlet piston 55 is connected to the air outlet.
Further, a rotation connecting member of the suction switching cock 65 has a third connecting hole for connecting the fourth connecting end and the fifth connecting end, and a fourth connecting hole through the third connecting hole. The fourth connecting end and the sixth connecting end are in a state in which the rotating member is rotated by a predetermined angle from the endoscope suction position where the end and the fifth connecting end are connected. Fourth connection holes are formed to connect between the fourth connection end portion and the sixth connection end portion from the endoscope suction position via the third connection hole along with the rotation operation of the rotation member. It is possible to selectively switch to the suction position inside the balloon where the connection with the connection end is connected.

Further, as shown in FIGS. 18 and 19, the electric connector 18 connected to the endoscope connector 16 via the electric cable cord 17 seals the contact portion 18a of the electric connector 18 in a watertight state as shown in FIGS. 18 and 19. Can be detachably attached. In addition, a matching coil for electrically matching the ultrasonic transducer 23 and the ultrasonic observation device is mounted inside the electric connector 18. Then, the frequency of the ultrasonic transducer 23 that is different for each model of the ultrasonic endoscope 11, the ultrasonic wave in accordance with the change in conditions such as the length from the hard end portion 21 of the ultrasonic endoscope 11 to the electrical connector 18 The electrical matching between each model of the endoscope 11 and the ultrasonic observation device is adjusted in advance by the matching coil in the electrical connector 18. Further, inside the electrical connector 18, the characteristics of each probe (ultrasonic endoscope 11) model (internal or external type, ultrasonic transducer 23 attached to the distal end hard portion 21)
The probe detection means that indicates the frequency, the distinction between the electronic sector type and the electronic linear type, and the electronic sector type tomographic direction (distinction of the longitudinal tomographic ultrasonic transducer 23a or the transverse layer ultrasonic transducer 23b) is attached. Has been done. In this case, the probe detection means is formed by an electric circuit, a change in resistance value, ON / OFF of contact pins, a storage unit (ROM), and the like.

The signal cable of the ultrasonic transducer 23 (AL shielded wire)
As shown in FIGS. 9 to 11, the bundle 68 is disposed so as to be covered with a protective tube 69 such as a silicon tube. Further, as shown in FIGS. 20 and 21, the bending tube of the bending portion 20 is provided on the outer peripheral surface of the rear end portion of the first holding body 29.
The pipe 20a is fixed by the bending pipe fixing screw 70 in the externally fitted state.

Then, when the ultrasonic endoscope 11 is used, the insertion portion 13 is inserted into the body cavity, and the rotating member of the water supply switching cock 64 of the sub-operation portion 14 is injected into the balloon while the distal end hard portion 21 is guided to the target portion. The rotation member of the position / suction switching cock 65 is rotated to the suction position inside the balloon, and at the same time, the operation unit at hand.
12 The air / water feeding piston 55's air exhaust hole is blocked by the user's fingers, etc. The water feeding position where the piston body of the air / water feeding piston 55 is pushed in, and the suction piston
The piston body of 56 is pushed and switched to the operated suction position to inject water into the balloon 47. Then, while the balloon 47 is filled with water, the ultrasonic transducer 23 scans ultrasonic waves to obtain, for example, a tomographic image of the body cavity wall.

Therefore, in the structure described above, the ultrasonic transducer holder 35 is connected to the front side portion of the concave ultrasonic transducer holder 35 formed in the first holder 29 of the hard tip body 22. The cutout portion 37 is formed in this state, and the embedded member 38 is fixed in a state where the embedded member 38 is embedded in the space formed by the cutout portion 37 with the ultrasonic transducer 23 mounted on the ultrasonic transducer holding portion 35. Since it is fixed to the first holding body 29 with the screws 39, 39, when the ultrasonic transducer 23 is attached and detached, the embedded member 38
By removing the first holding body 29 from the first holding body 29.
The ultrasonic transducer 23 is provided with a notch 37 for attaching the ultrasonic transducer, which is connected to the ultrasonic transducer holder 35, to form a space for moving the ultrasonic transducer 23 along the wiring direction of the signal cable bundle 69. Therefore, at the time of attaching / detaching the ultrasonic transducer 23, the operation can be performed while moving the ultrasonic transducer 23 along the wiring direction of the signal cable bundle 69.
The work of attaching and detaching the ultrasonic transducer 23 can be performed relatively easily.

Further, while the embedding member 38 is embedded in the space formed by the cutout portion 37 of the first holding body 29, the embedding member 38 is fixed to the first holding body 29 by the embedding member fixing screws 39, 39. In a state where the outer fitting portion 40 of the second holding body 30 is fitted onto the outer peripheral surface of the tip end portion of the first holding body 29,
The second holding body 30 is detachably connected to the first holding body 29 side by the holding body fixing screw 42, and the bending tube 20a of the bending portion 20 is attached to the outer peripheral surface of the rear end portion of the first holding body 29. The bending tube 20a is fixed to the first holding body 2 by the bending tube fixing screw 70 in a state of being fitted externally.
Since it is detachably fixed to the 9 side, it is possible to easily assemble and disassemble the entire tip hard part 21 as the screws 39, 42, 70 are attached and detached. Also, the work such as maintenance and inspection can be facilitated.

Further, since the first holding member 29 and the embedding member 38 and the embedding member 38 and the second holding member 30 are fixed by the embedding member fixing screws 39 and 39 and the second holding member fixing screw 42, respectively. It is possible to form a highly accurate mating surface between each of these parts, and it is possible to improve the watertightness of the inside of the distal end hard portion 21.

Also, the signal cable of the ultrasonic transducer 23 (AL shield wire)
Since the bundle 68 of the above is arranged in a state of being covered with the protective tube 69 such as a silicon tube, the protective tube 69
It is possible to prevent interference between the bundle 68 of the respective signal cables (AL shielded wires) and other parts, and improve the durability.

The present invention is not limited to the above embodiment. For example, as in the second embodiment shown in FIG. 22, the notch 71 is formed in the rear portion of the ultrasonic transducer holding portion 35 of the first holding body 29 while being connected to the ultrasonic transducer holding portion 35. It may be formed so that the embedding member 72 is embedded in the notch 71. In this case, the bending tube 20a attached to the rear of the first holding body 29 of the tip rigid portion main body 22 is fixed to the bending tube fixing screw 70.
Thus, the first holding body 29 and the embedded member 38 can be securely fixed. Further, as in the third embodiment shown in FIG. 23, the ultrasonic transducer holding section in the first holding body 29 is used.
The notch 81 may be formed in the back side portion of the 35 in a state of being connected to the ultrasonic transducer holder 35, and the embedding member 82 may be embedded in the notch 81. Furthermore, it goes without saying that various modifications can be made without departing from the scope of the present invention.

[Effects of the Invention] According to the present invention, a concave ultrasonic transducer holding portion for holding an ultrasonic transducer on the distal end hard portion and the ultrasonic transducer holding portion in the wiring direction of the signal cable of the ultrasonic transducer are provided. An embedded member that forms notches for mounting ultrasonic transducers that are connected along each other, and that fills the space formed by the notches when the ultrasonic transducers are attached to the ultrasonic transducer holders. Since it is provided, it is possible to easily separate the distal end hard portion that holds the ultrasonic transducer and the separate insertion tube or the like, and it is possible to improve workability such as assembly work and repair work.

[Brief description of drawings]

FIG. 1 (a) is a plan view showing a schematic configuration of the essential part of the present invention, FIG. 1 (b) is a longitudinal sectional view thereof, and FIGS. 2 to 21 show a first embodiment of the present invention. FIG. 2 is a plan view showing the appearance of the entire ultrasonic endoscope, FIG. 3 is a vertical cross-sectional view showing the schematic configuration of the distal end hard portion, FIG. 4 is the same plan view, and FIG. 6 is a sectional view taken along line VI-VI of FIG. 3, and FIG. 7 is a sectional view of FIG.
FIG. 8 is a sectional view taken along line VII-VII, FIG. 8 is a sectional view taken along line VIII-VIII of FIG. 3, FIG. 9 is a sectional view taken along line IX-IX of FIG. 3, and FIG.
Fig. 11 is a sectional view taken along line XX, Fig. 11 is a sectional view taken along line XI-XI in Fig. 3,
12 is a sectional view taken along line XII-XII in FIG. 6, and FIG. 13 is XII in FIG.
14 is a sectional view taken along line XIV-XIV in FIG. 6,
FIG. 15 is a sectional view taken along line XV-XV in FIG. 5, FIG. 16 is a longitudinal sectional view showing a balloon water supply channel, FIG. 17 is a side view showing an endoscope connector, and FIG. 18 is a side view showing an electric connector. Fig. 19 is a plan view of the same, Fig. 20 is an exploded perspective view of a hard end portion, and Fig. 21 is a perspective view of essential parts showing a state in which the second holding body is removed from the first holding body. 22 is a vertical sectional view showing a schematic structure of a main part of a second embodiment of the present invention, and FIG. 23 is a vertical sectional view of a main part showing a third embodiment. 1,21,71,101 …… Hard tip part, 2,23,72 …… Ultrasonic transducer, 3,29 …… First holder, 5,35 …… Ultrasonic transducer holding part, 6,68… … Signal cables, 7,37,71,81 …… Notches, 8,
38,72,82 ... Embedded members.

Claims (1)

[Claims] 1. An ultrasonic endoscope in which an ultrasonic transducer is attached to a hard tip portion, a concave ultrasonic transducer holding portion for holding the ultrasonic transducer in the hard tip portion, and the ultrasonic transducer. Forming notches for mounting ultrasonic transducers on the transducer holders along the wiring direction of the signal cable of the ultrasonic transducers, and attaching the ultrasonic transducers to the ultrasonic transducer holders. An ultrasonic endoscope comprising an embedding member that fills the space formed by the cutout when mounted on the endoscope.