JP3139340B2 - Ultrasonic probe - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ultrasonic probe which is inserted into a body cavity to perform an ultrasonic inspection, and more particularly, to an ultrasonic transducer having a plurality of ultrasonic transducers arranged in a line.
The present invention relates to an ultrasonic probe which is mounted on a rotating body having a rotation axis in a direction orthogonal to the transmission / reception surface and rotates the rotating body so that an ultrasonic tomographic image in a desired direction can be obtained.

[0002]

2. Description of the Related Art As an ultrasonic probe, an ultrasonic transducer having a number of ultrasonic transducers arranged in a row is rotated,
A multi-plane ultrasonic probe capable of acquiring ultrasonic tomographic images in various directions is disclosed in, for example, JP-A-6-2.
As shown in Japanese Patent No. 61901, it is conventionally known. Therefore, an ultrasonic probe according to the related art will be described with reference to FIGS.

FIG. 1 shows an entire configuration of an ultrasonic probe. In the figure, 1 is an insertion portion into a body cavity,
The insertion portion 1 includes a distal end portion main body 1a, an angle portion 1b, and a flexible portion 1c from the distal end side. The tip body 1a is provided with an ultrasonic transducer 2, and the angle section 1b is capable of performing a bending operation to orient the tip body 1a provided with the ultrasound transducer 2 in a desired direction. . The flexible portion 1c has a flexible structure that bends in an arbitrary direction along an insertion path into a body cavity. The proximal end of the flexible portion 1 c in the insertion portion 1 is connected to the main body operation portion 3. Further, a cable cord 4 extends to the main body operation unit 3.
Is provided with a connector section 5 which is detachably connected to an ultrasonic observation apparatus (not shown).

As shown in FIG. 2, the ultrasonic transducer 2 has a number of strip-shaped ultrasonic transducers 2a arranged in a row. When the ultrasonic transducer 2 is operated, a virtual line is shown in the figure. direction of the ultrasonic scan line shown in F ₁ is obtained. The ultrasonic transducer 2, O and can be rotated around a, when rotated by a predetermined angle, the direction of the ultrasonic scan line shown in phantom F ₂ is obtained. Therefore, if the ultrasonic scanning is performed at a predetermined angle while rotating the ultrasonic transducer 2, the body is three-dimensionally grasped within a predetermined cylindrical (in the case of linear scanning) or conical (in the case of sector scanning) range in the body. Tissue tomography information that can be obtained can be obtained.

FIGS. 3 and 4 show an ultrasonic transducer 2.
1 shows a rotation drive mechanism. First, FIG.
The numeral 10 indicates a casing of the distal end portion main body 1a, in which the ultrasonic transducer 2 is provided. The ultrasonic transducer 2 is composed of a laminated body, and the lowermost layer of the laminated body is a backing material 11, and the ultrasonic transducer 2 a is laminated on the backing material 11. An acoustic matching layer 12 is provided on the ultrasonic transducer 2a, and an acoustic lens 13 is provided on the acoustic matching layer 12. The backing material 11 of the ultrasonic transducer 2 is fixed on the rotating body 14. The acoustic lens 13 faces the acoustic window 15 attached to the opening 10a provided in the casing 10, and the acoustic window 15
A sealing member 16 is attached between the casing 10 and the casing 10 and between the casing 10 and the acoustic lens 13, and the gap between the acoustic lens 13 and the acoustic window 15 is sealed. A transmission medium is enclosed.

[0006] In order to rotate the ultrasonic transducer 2, a rotating shaft 17 is fixedly mounted on the casing 10 at a center position of the rotating body 14 and extends in a direction perpendicular to the transmitting / receiving surface of the ultrasonic transducer 2. The fitted rotating member 14 is rotatably supported on the rotating shaft 17. The rotating body 14 is driven to rotate by remote control. For this reason, the rotating body 14 has a pair of operation wires 18,
18 is connected and pulls one operation wire,
By pushing out the other operation wire, the rotating body 14
Will rotate. In the figure, reference numeral 19 denotes a flat cable connected to each ultrasonic transducer 2a of the ultrasonic transducer 2.

[0007] The operation wire 17 extends to the inside of the main body operation section 3 via the angle section 1b and the flexible section 1c.
Then, as is apparent from FIG.
Are connected to a slack absorbing member 21 provided in a casing 20 of the main body operating section 3, a second operating wire 22 is connected to the slack absorbing member 21, and the second operating wire 22 is connected to a pulley. The end is fixed to the pulley 23. The pulley 23 has a rotating shaft 2
4 are connected to each other.
And a knob 25 as operating means is connected to a lead-out portion from the casing 20. Therefore, when the knob 25 is rotated, the pair of second operation wires 2
2 is pushed and pulled, the force of the second operation wire on the pulling side is loosened, and the rotational force is transmitted to the rotating body 14 via the slack absorbing member and the operation wire. At this time, the other second operation wire is pushed out, so that no pulling force acts on the operation wire connected to the second operation wire via the slack absorbing member.

As described above, the operation of the knob 25 causes the ultrasonic transducer 2 to rotate, so that the ultrasonic scanning direction changes. Therefore, it is necessary to acquire information on which direction of ultrasonic scanning is currently being performed, and for this purpose, a mechanism for detecting the rotation angle of the pulley 23 is provided. The rotation angle detecting mechanism has a bevel gear 26 connected to the pulley 23 and a driven bevel gear 27 that meshes with the bevel gear 26. The driven bevel gear 27 is attached to an input shaft 28a of an encoder 28. Have been.
Therefore, when the pulley 23 rotates, the rotating body 1 is rotated.
When the pulley 23 rotates, the bevel gear 26 rotates with the rotation of the pulley 23, and this rotation is transmitted to the driven-side bevel gear 27, and rotates following the rotation of the bevel gear 26. Since it is detected by the encoder 28, the pulley 23
Can be detected.

Here, in the casing 20 of the main body operation unit 3, the pulley 23 must be rotatably supported, and the encoder 28 must be fixed. For this purpose, a support plate 29 is provided in the casing 20 and the support plate 29 is provided.
, The pulley 23 and the encoder 28 are fixed. Although not shown, a pulley and the like constituting a bending operation mechanism for bending the angle portion 1b are also rotatably supported by the support plate 29.

[0010]

As before mentioned [0005] The support plate is provided in the casing, hitting the mounting various members provided to the main body operation portion, via a bevel gear transmission mechanism the rotation of the pulley In this case, the rotation angle detection mechanism must be provided on the side of the support plate where the pulley is provided, and the bending operation mechanism for the angle section is also provided on the same side of the support plate. There is a disadvantage that various members are concentrated on a part of the main body, and a large dead space is generated in a part on the opposite side, and there is a disadvantage that the size and size of the main body operation unit cannot be reduced. Also,
The use of the bevel gear transmission mechanism for detecting the rotation of the pulley by the encoder has problems that the configuration is complicated and the size and weight are increased.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and it is an object of the present invention to simplify the configuration of a rotation angle detecting mechanism for detecting an ultrasonic scanning direction, and to mount it compactly and rationally. Is to do so.

[0012]

In order to achieve the above-mentioned object, the present invention provides an ultrasonic transducer having a plurality of ultrasonic transducers arranged in a row, and the ultrasonic transducer having a rotation axis in a direction orthogonal to a transmitting / receiving surface thereof. Attach to the body,
In order to perform the rotating operation of the rotating body, the rotating body extends from the insertion section into the main body operating section and includes an operating wire attached to the rotating operating mechanism, wherein the rotating operating mechanism includes an operating wire. A pulley whose end is wound, connected to the pulley, and led out of the casing of the main body operation unit
And a supporting plate provided in the casing.
The pulley is rotatably held on one side of this support plate.
And the pulley of the support plate is provided in the casing.
A predetermined space is formed on the side opposite to the mounting part of
The rotation angle detecting means is provided in the inside, and the input shaft of the rotation angle detecting means extends through the support plate toward the mounting portion side of the pulley.
Interlocking rotating hand that rotates the input shaft integrally with the rotating shaft.
It is characterized in that it is configured to be connected to a step .

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A rotation operation mechanism of an ultrasonic transducer has a pulley around which an operation wire is wound and a rotation shaft connected to the pulley, and as an operation means for rotating the rotation shaft. For example, a knob is provided. The pulley needs to be rotatably supported within the casing of the main body operation unit. The main body operation unit has a structure that its casing can be opened and closed for maintenance and the like. Since it is not possible to open and close the surface on which the rotation axis extends, it is necessary to open and close the wall on the side opposite to the side on which the rotation axis extends. Therefore, the pulley cannot be fixed directly to the casing. For this purpose, a support plate is provided in the main body operation unit, and the support plate fixedly supports a pulley constituting a rotation operation mechanism of the ultrasonic transducer and a pulley constituting a bending operation mechanism of the angle unit. To be configured.

A pulley constituting a rotation operation mechanism of the ultrasonic transducer is provided on one side of the support plate. The pulleys constituting the bending operation mechanism of the angle portion can be provided separately from the pulleys for the rotation operation. However, providing them coaxially makes the configuration in the main body operation unit more compact. Anyway, both pulleys are located only on one side of the support plate, and a predetermined space is formed between the opposite surface of the support plate and the inner wall of the casing. Therefore, the encoder is mounted on the side coaxial with the pulley and on the side opposite to the side where the pulley is provided with the support plate interposed therebetween. Then, the input shaft of the encoder is penetrated through the support plate, inserted into the inside of the pulley, and connected to the pulley or the rotary shaft of the rotary operation mechanism of the ultrasonic transducer connected thereto via the interlocking rotating means. Thus, when the rotation shaft rotates, the input shaft of the encoder rotates, and the rotation angle can be detected.

The interlocking rotation means may use a fixing means such as a bolt for connecting the input shaft of the encoder to the pulley or the rotation shaft. Interlocking mechanism, spline,
It is preferable to use an interlocking rotating means that can be separated like a key or the like and can be separated by displacing the input shaft in the axial direction. Means other than these can be used. In short, it is only necessary that the input shaft follow the rotation of the rotating shaft accurately.

[0016]

An embodiment of the present invention will be described below with reference to FIG. In the following description, since the configuration of the distal end main body provided with the ultrasonic transducer in the insertion portion is not particularly different from that of the above-described conventional technology, in the following description, the superposition provided in the main body operation section will be described. Only the rotating operation mechanism of the acoustic transducer will be described, and the same or equivalent members in the insertion section as those in the related art will be described using the same reference numerals.

First, in FIG. 5, reference numeral 30 denotes a rotating operation wire for rotating the ultrasonic transducer 2, and 31 denotes a bending operation wire for bending the angle portion 1b. 3
1 is provided in a pair, and these are members corresponding to the second operation wire in the above-mentioned prior art, and are respectively extended in the insertion portion 1 via the slack absorbing members 32 and 33 in the middle. The rotating operation wire 30 is the rotating body 1
4 and the bending operation wire 31 is connected to the angle ring at the tip of the angle portion 1b or the tip body 1a. Then, the rotation operation wire 30 and the bending operation wire 3
The base end of the first unit is fixedly provided so as to be wound around pulleys 34 and 35, respectively.

In the casing 37 of the main body operation section 36,
A support plate 38 is provided. The support plate 38 allows the inside of the main body operation unit 36 to be divided into two chambers 3 on the left and right.
6a and 36b. Pulleys 34, 35
Is provided in the chamber 36a on one side, and the pulley 34 around which the rotary operation wire 30 is wound is directly disposed on the support plate 38. A pulley pressing member 39 is provided between the pulley 34 and the pulley 35 around which the bending operation wire 31 is wound, and above the pulley 35. Here, though not shown, the pulley pressing member 39 is provided with a through hole for leading out the rotation operation wire 30 and the bending operation wire 31.

The pulley 34, a partition wall portion 39a provided between the pulleys 34 and 35 of the pulley holding member 39, and the pulley 35
In addition, coaxial hollow shafts 40 to 43 are connected to a cover portion 39 b of the pulley holding member 39 which covers the upper portion of the pulley 35. The hollow shaft 40 connected to the pulley 34 has the smallest diameter, and the hollow shaft 41 connected to the partition 39a.
Is in sliding contact with the inner surface of the The hollow shaft 41 is in sliding contact with the inner surface of a hollow shaft 42 connected to the pulley 35, and the hollow shaft 42
Is in sliding contact with the hollow shaft 43 connected to the cover 39b. Of these four hollow shafts 40 to 43, the hollow shaft 4
Reference numerals 0 and 42 denote rotatable hollow rotary shafts.
A hollow support shaft 43 rotatably supports the movable hollow shafts 40 and 42.

Each of the four hollow shafts 40 to 43 extends outside from the casing 37 of the main body operating portion 36, and is connected to a rotary operation knob 45 via a connecting member 44 at the tip of the hollow rotary shaft 40. Have been. Accordingly, when the rotary operation knob 45 is rotated, the rotational force is transmitted to the hollow rotary shaft 40 via the connecting member 44, and the hollow rotary shaft 40 rotates following the rotary shaft 40 to rotate the pulley 34. An annular friction plate 46 is fixedly provided on the connecting member 44 and screwed to the hollow rotary shaft 40. Further, a flange portion 41a is provided at the tip of the hollow support shaft 41, and when the connecting member 44 is screwed into and out of the hollow rotary shaft 40, the pressing force of the friction plate 46 against the flange portion 41a changes. ,
The resistance to the rotation operation of the rotation operation knob 45 can be adjusted.

The hollow rotary shaft 42 is connected to a bending operation knob 48 via a rotary drum 47. Therefore, when the bending operation knob 48 is rotated, the rotation force is applied to the rotating drum 4.
7, the pulley 35 connected to the hollow rotary shaft 42 rotates, and the pair of bending operation wires 31 is pushed and pulled, so that the angle portion 1b is bent. A rotary drum 50 connected to a lock lever 49 is fitted to the hollow support shaft 43, and an annular holder 51 screwed to the hollow support shaft 43 rotates with the rotary drum 50. An annular friction member 52 is fixedly provided on the annular holder 51, and the friction member 52 can be brought into contact with and separated from the rotating drum 47. With this configuration, when the lock lever 49 is rotated around the axis of the hollow support shaft 43, the annular holder 51 rotates following the rotation of the lock lever 49. , The friction member 52 is pressed against the rotating drum 50. As a result, the bending operation knob 48 is locked at a desired rotation position.

When the rotary operation knob 45 is rotated, the pulley 34 is rotated, and a pair of rotary operation wires 30 wound around the pulley 34 are pushed and pulled, so that the rotating body 14 is rotated and the ultrasonic transducer 2 is rotated. The scanning direction changes,
In order to detect the scanning direction of the ultrasonic transducer 2, a chamber 36b on the opposite side to the side where the pulleys 34, 35 and the like are provided across the support plate 38 in the main body operation unit 36
Is provided with an encoder 53. This encoder 5
3 is inserted into the support plate 38, faces the inside of the chamber 36 a, and is fixed to the support plate 38 by tightening the nut 54.

The input shaft 55 of the encoder 53 extends to an intermediate position in the hollow rotary shaft 40, and a minus groove 55a is formed on the distal end surface thereof. On the other hand, a transmission shaft 56 is fitted on the upper side inside the hollow rotary shaft 40, and a chamfered portion 56a is formed at the upper end of the transmission shaft 56,
The chamfered portion 56a is inserted in a state in which the chamfered portion 56a is brought into surface contact with the connecting member 44, whereby the transmission shaft 56 rotates integrally with the hollow rotary shaft 40. And
A projection 57 is provided at the lower end of the transmission shaft 56, and the projection 57 is engaged with the minus groove 55 a of the input shaft 55, and is in an uneven fitting state.

Accordingly, the rotation operation knob 45 is operated to rotate,
When the scanning direction of the ultrasonic transducer 2 is changed by rotating the rotating body 14, the encoder 5 is transmitted via the transmission shaft 56.
3 is transmitted to the input shaft 55, and the input shaft 5
With the rotation of 5, the rotation angle of the rotating body 14 is detected.
As a result, the scanning direction of the ultrasonic transducer 2 is detected by the encoder 53, and the detected data is displayed on, for example, a monitor of an ultrasonic observation device.

With the above-described configuration, the operator holds the main body operation section 36 and holds the bending operation knob 4
By operating 8, the angle portion 1b of the insertion portion 1 is curved, and the distal end main body 1a on which the ultrasonic transducer 2 is mounted can be directed in a desired direction. Further, by operating the ultrasonic transducer 2 in a state where the distal end main body 1a is guided to a site where an ultrasonic inspection is to be performed, each ultrasonic transducer 2a constituting the ultrasonic transducer 2 is sequentially operated. Thus, linear or sector scanning is performed.

In order to change the scanning direction of the ultrasonic transducer 2, the rotation operation knob 45 is operated, the rotation operation wire 30 is pushed and pulled, and the rotating body 14 is rotated by a desired angle in either the left or right direction. Thereby, the direction of the scanning line in the ultrasonic transducer 2 can be changed. Here, the rotating body 14 does not need to be rotated once, and it is sufficient that the rotating body 14 can be rotated back and forth by approximately 180 °. Then, by performing ultrasonic scanning at desired angles while rotating the rotating body 14, ultrasonic image data that can be grasped three-dimensionally can be obtained.

Rotating operation knob 45 and bending operation knob 48
Is usually operated by a finger of the hand of the operator holding the main body operation section 36. If these two knobs 45 and 48 are provided coaxially, the main body operation section 36 is switched during operation. It is not necessary to perform the operation, and the operation can be performed with the touch of the finger.

When the scanning direction of the ultrasonic transducer 2 is changed by operating the rotary operation knob 45 and rotating the rotating body 14, the ultrasonic scanning direction with respect to the axis of the insertion section 1 is displayed on the monitor of the ultrasonic observation apparatus. You. For this,
An encoder 53 is provided, and when the rotation operation knob 45 is operated, the hollow rotary shaft 40 rotates. The transmission shaft 56 rotates following the rotation of the hollow rotary shaft 40. The transmission shaft 56 has a ridge 57 that is fitted into the input shaft 55 of the encoder 53 and the minus groove 55a.
Is transmitted to the input shaft 55 and the encoder 5
3, the rotation angle of the hollow rotary shaft 40 is detected. Here, the rotation of the hollow rotary shaft 40 is controlled by the ultrasonic transducer 2.
The scanning direction of the ultrasonic transducer 2 is detected, and the display of the ultrasonic scanning direction on the monitor is controlled based on the detection signal.

Here, the above-described members and other members are provided in the main body operation unit 36.
5, the rotation operation wire 30, the bending operation wire 31 and the like are formed by two chambers 36a defined by a support plate 38,
36b, it is arranged on one chamber 36a side, and various members are concentrated on this chamber 36a side. Here, pulleys 34, 35 are attached to the support plate 38, and the rotating operation wires 30,
Since the positions of the bending operation wire 31 and the hollow shafts 40 to 43 are restricted, the arrangement of the support plate 38 in the main body operation unit 36 is limited. Therefore, some space exists on the chamber 36b side. Therefore, in order to effectively use the space on the side of the chamber 36b, the encoder 53 is disposed on the side of the chamber 36b. Thus, the arrangement of the members in the main body operation unit 36 is dispersed, and the dead space can be effectively used. Therefore, the configuration of the main body operation unit 36 can be reduced in size and size. However, since the wall of the casing 37 on the side of the chamber 36b is openable for maintenance or the like, the encoder 53 cannot be fixed to this wall. Therefore, the encoder 53 is fixed to the support plate 38. This facilitates alignment of the input shaft 55 with the transmission shaft 56.

A transmission shaft 56 that rotates integrally with the hollow rotary shaft 40
(The hollow rotary shaft 40 and the transmission shaft 56 are formed as separate members from the viewpoint of easiness of manufacture and assembly.
The two shafts 40 and 56 can also be formed integrally) is located on the chamber 36a side, and the encoder 53 is
6b. Therefore, the input shaft 55 of the encoder 53 is extended through the support plate 38 defining the chambers 36a and 36b, extended toward the chamber 36a, and inserted into the hollow rotary shaft 40. Axis alignment with the rotating shaft 40 can be performed. In order to rotate the transmission shaft 56 and the input shaft 55 in conjunction with each other inside the hollow rotary shaft 40, a minus groove 55a and a ridge 57
The concave and convex fitting is performed by the following. Therefore, to remove the encoder 53 at the time of maintenance or the like, the nut 53 fixing the encoder 53 to the support plate 38 may be detached, and the encoder 53 may be pulled out. Become.
Further, the encoder 53 is connected to the ultrasonic transducer 2
Hollow rotary shaft 40 that is rotated when changing the scanning direction of
Since the transmission means such as the bevel gear transmission means is not interposed between them in a substantially directly connected state, as a whole,
The configuration of the rotation angle detection mechanism is simplified, and the rotation angle detection mechanism is lightweight and compact.

[0031]

As described above, according to the present invention, the pulley to which the operating wire for rotating the rotating body provided with the ultrasonic transducer is connected is rotated on the support plate provided in the casing of the main body operating section. The rotation angle detecting means is provided on the side opposite to the pulley mounting portion with the support plate interposed therebetween, and the input shaft of the rotation angle detecting means extends through the support plate to the pulley mounting portion side. And the rotation axis is connected via the interlocking rotation means, so that the configuration of the rotation angle detection mechanism for detecting the ultrasonic scanning direction by the ultrasonic transducer is simplified, and it is compact and rationally mounted. It has the effect of being able to do so.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an overall configuration of a conventional multi-plane ultrasonic probe.

FIG. 2 is an operation explanatory view showing an operation state of an ultrasonic transducer in the ultrasonic probe.

FIG. 3 is a sectional view of a distal end portion of an insertion section in the ultrasonic probe of FIG.

FIG. 4 is a sectional view of a main body operation unit of the ultrasonic probe of FIG. 1;

FIG. 5 is a sectional view of a main body operation unit of the ultrasonic probe according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insertion part 1a Tip main body 1b Angle part 1c Flexible part 2 Ultrasonic transducer 2a Ultrasonic transducer 30 Rotation operation wire 31 Bending operation wire 34, 35 Pulley 36 Main body operation part 36a, 36b Chamber 37 Casing 38 Support plate 40-43 Hollow shaft 45 Rotation operation knob 48 Bending operation knob 53 Encoder 54 Nut 55 Input shaft 55a Negative groove 56 Transmission shaft 56a Chamfered portion 57 Ridge

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hisashi Nakamura 1385-1 Shimoishigami, Otawara-shi, Tochigi Nishi Plant, Toshigi (72) Inventor Yasutaka Nagai 1385-1 Shimoishigami, Otawara-shi, Tochigi Toshiba, Inc. Nasu Factory (56) References JP-A-6-261901 (JP, A) JP-A-5-272989 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) A61B 8/12

Claims (5)

(57) [Claims] An ultrasonic transducer in which a plurality of ultrasonic transducers are arranged in a row is mounted on a rotating body having a rotation axis in a direction orthogonal to a transmitting / receiving surface thereof, and a rotating body of the rotating body is attached to a tip of an insertion portion. In order to perform an operation, an operation wire extending from the insertion section into the main body operation section and having an operation wire attached to a rotation operation mechanism is provided, wherein the end of the operation wire is wound around the rotation operation mechanism. A pulley and a cable connected to the pulley,
A rotating shaft led out of the shing , and a support plate provided in the casing, and one side of the support plate
The pulley is rotatably held in the casing, and the pulley of the support plate is mounted in the casing.
A predetermined space is formed on the opposite side of the
A shift angle detecting means is provided, and an input shaft of the rotation angle detecting means extends through the support plate toward the mounting portion of the pulley, and the input shaft is linked to an interlocking rotating means that rotates integrally with the rotary shaft.
An ultrasonic probe characterized by being connected . 2. The rotating shaft comprises a hollow rotating shaft,
The interlocking rotation means comprises a transmission shaft provided inside the hollow rotation shaft.
The ultrasonic probe according to claim 1, wherein the ultrasonic probe is formed.
Bu. 3. The input shaft has an axis with respect to the transmission shaft.
Configuration that can be separated by displacement in the
The ultrasonic probe according to claim 2, wherein: 4. An end face of the input shaft and an end face of the transmission shaft.
4. The structure according to claim 3, wherein the projections and depressions are fitted to each other.
An ultrasonic probe as described. 5. The ultrasonic transducing device according to claim 1, wherein:
The angle part is connected to the tip part where the
In order to bend the angle portion, the main body operation portion
Is provided with a pulley around which the bending operation wire is wound.
The rotation axis of the pulley is a hollow rotation axis.
In, the rotation axis of the rotation operation mechanism, this hollow rotation axis
A contractor characterized by being provided so as to be coaxial.
The ultrasonic probe according to claim 1.