Ultrasonic endoscope probe and ultrasonic endoscope

Abstract

The ultrasonic endoscope probe comprises an insertion portion, an ultrasonic transducer and a needle outlet are arranged at the head end of the insertion portion, the ultrasonic transducer comprises a plurality of transducer array elements arranged continuously, and all the transducer array elements form a first convex array area and a second convex array area. The joints of the first convex array area and the second convex array area are tangent, the tangent point is the most convex point of the side, facing the needle outlet, of the ultrasonic transducer, the end, away from the second convex array area, of the first convex array area is close to the needle outlet, and the curvature of the first convex array area is smaller than that of the second convex array area. The curvature of the first convex array area is smaller than that of the second convex array area, so that the most convex point is far away from the needle outlet to avoid the puncture needle, the needle outlet angle of the puncture needle is small, puncture on the part close to the axial direction of the insertion part is facilitated, the component force of the puncture force of the puncture needle in the axial direction of the insertion part is increased, and puncture is facilitated; the ultrasonic transducer in the forward direction of the head end is small in size, and miniaturization of the ultrasonic transducer is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, and more specifically, to an ultrasonic endoscope probe. In addition, the utility model also relates to an ultrasonic endoscope comprising the ultrasonic endoscope probe. Background Art

[0002] Ultrasonic endoscopes are widely used in clinical medicine. Ultrasonic endoscopes include an insertion portion. In the prior art, the puncture needle of the insertion portion deviates from the axial direction of the insertion portion at a large angle, that is, the puncture needle exits at a large angle, so that it is difficult to puncture some special parts that are relatively close to the axial direction of the insertion portion, for example, it is difficult to puncture special parts such as the fundus of the stomach.

[0003] Therefore, how to reduce the needle exit angle of the puncture needle is a problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0004] In view of this, an object of the utility model is to provide an ultrasonic endoscope probe, the puncture needle of which has a small needle exit angle.

[0005] Another object of the utility model is to provide an ultrasonic endoscope comprising the ultrasonic endoscope probe mentioned above, which has the same beneficial effects as the ultrasonic endoscope probe mentioned above.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An ultrasonic endoscope probe comprises an insertion portion, wherein the head end of the insertion portion is provided with an ultrasonic transducer and a needle exit port for a puncture needle to enter and exit, the ultrasonic transducer comprises a plurality of continuously arranged transducer array elements, all of the transducer array elements form a first convex array area and a second convex array area, the first convex array area and the second convex array area are tangent at their connection, and the tangent point is the most convex point of the ultrasonic transducer on the side where the needle exit port is located, the end of the first convex array area away from the second convex array area is close to the needle exit port, and the curvature of the first convex array area is smaller than the curvature of the second convex array area.

[0008] Optionally, the curvature of the second convex array area is a multiple of the curvature of the first convex array area.

[0009] Optionally, the second convex array area is semicircular in shape, the lower outer edge of the second convex array area at one end away from the first convex array area is tangent to the lower outer edge of the insertion part, and the diameter of the second convex array area is less than or equal to the distance of the needle outlet relative to the lower outer edge of the insertion part.

[0010] Optionally, an ultrasonic boundary line of the first convex array area away from the field of view of the second convex array area intersects with an edge of the insertion portion.

[0011] Optionally, an objective lens is provided at the head end, and a first side boundary of the field of view of the objective lens covers a region corresponding to the axial direction of the insertion portion; and a second side boundary of the field of view of the objective lens covers an edge portion of the insertion portion.

[0012] Optionally, the head end is provided with a rotatable lifting device, which is located inside the insertion part and below the puncture needle. After the puncture needle passes through the instrument channel for its passage, it is placed on the top of the lifting device so that the needle outlet direction of the puncture needle can be adjusted by rotating the lifting device.

[0013] Optionally, an instrument channel connected to the needle outlet is provided inside the insertion portion for allowing the puncture needle to pass through, and the instrument channel is at an angle of 0-20 degrees relative to the center line of the insertion portion.

[0014] Optionally, the head end is provided with an inclined surface which is arranged to be inclined relative to the axial direction of the insertion portion, and the needle outlet is arranged on the inclined surface.

[0015] Optionally, an acoustic lens is provided on the periphery of the ultrasonic transducer.

[0016] An ultrasonic endoscope comprises the ultrasonic endoscope probe mentioned above.

[0017] The ultrasonic endoscope probe provided by the utility model has a transducer array element of an ultrasonic transducer having two convex array areas, namely, a first convex array area and a second convex array area. Since the tangent point of the first convex array area and the second convex array area is the most convex point on the side where the needle exit is located, and the first convex array area is closer to the needle exit than the second convex array area, the curvature of the first convex array area is smaller than the curvature of the second convex array area. Therefore, compared with a single convex array area, the utility model uses two convex array areas with different curvatures, which is equivalent to using the curvature of the first convex array area being smaller than the curvature of the second convex array area, and lengthening The distance from the most convex point to the needle outlet is reduced, so that the most convex point of the ultrasonic transducer is far away from the needle outlet, which is conducive to the most convex point avoiding the puncture needle, so that the puncture needle is closer to the axial direction of the insertion part after coming out of the needle outlet, that is, the angle of the puncture needle deviating from the axial direction of the insertion part is reduced, so that the puncture needle has a small needle outlet angle, which is conducive to puncturing special parts that are relatively close to the axial direction of the insertion part, for example, puncturing the fundus of the stomach; and because the puncture needle has a small needle outlet angle, the puncture needle is closer to the axial direction of the insertion part, so the component of the puncture force of the puncture needle in the axial direction of the insertion part can be increased, making it easier to puncture. In addition, the second convex array area is far away from the needle outlet and is located in the front of the head end. Since the curvature of the second convex array area is greater than the curvature of the first convex array area, the size of the ultrasonic transducer in the front of the head end is small, which is conducive to the miniaturization of the ultrasonic transducer. That is, the ultrasonic endoscope probe ensures that the puncture needle has a small needle outlet angle while making the size of the ultrasonic transducer small.

[0018] The ultrasonic endoscope provided by the utility model comprises the ultrasonic endoscope probe mentioned above and has the above beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0020] Figure 1 A cross-sectional view of an ultrasonic endoscope probe provided by a specific embodiment of the utility model;

[0021] Figure 2 for Figure 1 The schematic diagram of the principle of the ultrasonic endoscope probe is shown;

[0022] Figure 3 The figure is a schematic diagram of realizing the first convex array area and the second convex array area based on two tangent circles.

[0023] Figures 1 to 3 The reference numerals in the figures are as follows:

[0024] 1 is the insertion part, 11 is the head end, 111 is the inclined surface, 12 is the edge part, 13 is the instrument channel, 2 is the ultrasonic transducer, 21 is the first convex array area, 22 is the second convex array area, 23 is the most convex point, 24 is the ultrasonic field of view, 241 is the ultrasonic boundary line, 25 is the acoustic lens, 3 is the puncture needle, 4 is the objective lens, 41 is the first side boundary, 42 is the second side boundary, and 5 is the forceps lifter. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] The core of the utility model is to provide an ultrasonic endoscope probe, the puncture needle of which has a small needle exit angle. Another core of the utility model is to provide an ultrasonic endoscope including the ultrasonic endoscope probe, which has the same beneficial effects as the ultrasonic endoscope probe.

[0027] Please combine Figure 1 and Figure 2 An embodiment of the utility model provides an ultrasonic endoscope probe, including an insertion part 1, a head end 11 of the insertion part 1 is provided with an ultrasonic transducer 2 and a needle outlet for a puncture needle 3 to enter and exit, the ultrasonic transducer 2 includes a plurality of continuously arranged transducer array elements, all of which form a first convex array area 21 and a second convex array area 22, the first convex array area 21 and the second convex array area 22 are tangent at the connection, and the tangent point is the most convex point 23 of the ultrasonic transducer 2 on the side where the needle outlet is located, the end of the first convex array area 21 away from the second convex array area 22 is close to the needle outlet, and the curvature of the first convex array area 21 is smaller than the curvature of the second convex array area 22.

[0028] That is to say, the transducer array element of the ultrasonic transducer 2 of the ultrasonic endoscope probe has two convex array areas, namely, a first convex array area 21 and a second convex array area 22. The first convex array area 21 and the second convex array area 22 can constitute a single array element, in which case the transducer array element can be a single array element. In some embodiments, the first convex array area 21 and the second convex array area 22 can also belong to different array elements, in which case the transducer array element can be a dual array element.

[0029] Since the tangent point of the first convex array area 21 and the second convex array area 22 is the most convex point 23 on the side where the needle outlet is located, and the first convex array area 21 is closer to the needle outlet than the second convex array area 22, the curvature of the first convex array area 21 is smaller than the curvature of the second convex array area 22. Therefore, compared with a single convex array area, this embodiment uses two convex array areas with different curvatures, which is equivalent to using the curvature of the first convex array area 21 being smaller than the curvature of the second convex array area 22, thereby lengthening the distance from the most convex point 23 to the needle outlet, so that the most convex point 23 of the ultrasonic transducer 2 Being away from the needle exit port is conducive to making the most convex point 23 avoid the puncture needle 3, so that the puncture needle 3 is closer to the axial direction of the insertion part 1 after coming out of the needle exit port, that is, reducing the angle of the puncture needle 3 deviating from the axial direction of the insertion part 1, so that the puncture needle 3 has a small needle exit angle, which is conducive to puncturing special parts that are relatively close to the axial direction of the insertion part 1, for example, puncturing the fundus of the stomach; and, because the puncture needle 3 has a small needle exit angle, the puncture needle 3 is closer to the axial direction of the insertion part 1, so the puncture force of the puncture needle 3 in the axial direction of the insertion part 1 can be increased, making it easier to puncture. In addition, the second convex array area 22 is far away from the needle exit port and is located in front of the head end 11. Since the curvature of the second convex array area 22 is greater than the curvature of the first convex array area 21, the size of the ultrasonic transducer 2 in front of the head end 11 is small, which is conducive to the miniaturization of the ultrasonic transducer 2. That is, the ultrasonic endoscope probe ensures that the puncture needle 3 has a small needle exit angle while making the size of the ultrasonic transducer 2 small.

[0030] It should be noted that this embodiment does not limit the specific relationship between the curvature of the first convex array area 21 and the curvature of the second convex array area 22, as long as the curvature of the first convex array area 21 is smaller than the curvature of the second convex array area 22.

[0031] In some embodiments, the curvature of the second convex array area 22 may be a multiple of the curvature of the first convex array area 21. Specifically, the curvature of the second convex array area 22 is twice the curvature of the first convex array area 21. Figure 2 and Figure 3 The shapes of the first convex array area 21 and the second convex array area 22 can be realized based on two tangent circles. In this embodiment, the radius of the larger circle of the two tangent circles is twice the radius of the smaller circle. The first convex array area 21 is a part of the larger circle. Figure 3 The arc segment between AB represents the first convex array area 21, and the second convex array area 22 is a part of the small circle, such as Figure 3 The arc segment between BC represents the second convex array area 22.

[0032] Of course, in other embodiments, the curvature of the first convex array area 21 and the curvature of the second convex array area 22 may also have other proportional relationships, and those skilled in the art may set them according to actual needs.

[0033] Further, to expand the ultrasound field of view 24, please refer to Figure 2 In some embodiments, the second convex array area 22 is in the shape of a semicircle. That is, the second convex array area 22 starts from the tangent point with the first convex array area 21 and forms a semicircular convex array in the direction away from the first convex array area 21, that is, the second convex array area 22 covers the front of the head end 11 at 180 degrees, and the second convex array area 22 forms a 180-degree field of view, which increases the ultrasonic scanning range, expands the ultrasonic field of view 24, and can obtain more comprehensive information; at the same time, the semicircular second convex array area 22 makes the front of the head end 11 more rounded, thereby improving the insertability of the insertion portion 1.

[0034] Furthermore, in some embodiments, the lower outer edge of the second convex array area 22 at one end away from the first convex array area 21 is tangent to the lower outer edge of the insertion portion 1, and the diameter of the second convex array area 22 is less than or equal to the distance of the needle outlet relative to the lower outer edge of the insertion portion 1. In this way, the height of the most convex point 23 where the first convex array area 21 and the second convex array area 22 are tangent can be made lower than or equal to the height of the needle outlet, so as to better avoid the puncture needle 3. In this case, the puncture needle 3 can be made to pass through in a direction parallel to the center line of the insertion portion 1, that is, the needle outlet angle of the puncture needle 3 is 0 degrees.

[0035] Of course, in other embodiments, the diameter of the second convex array area 22 may also be greater than the preset value of the distance between the needle outlet and the lower outer edge of the insertion portion 1. In this case, the puncture needle 3 can be tilted out of the needle outlet, so that the puncture needle 3 has a certain needle outlet angle to avoid interference between the puncture needle 3 and the most convex point 23 of the ultrasonic transducer 2. In addition, please continue to refer to Figure 2 In some embodiments, the ultrasonic boundary line 241 of the first convex array area 21 away from the field of view of the second convex array area 22 intersects with the edge 12 of the insertion portion 1. Figure 1 , the head end 11 is provided with an inclined surface 111 arranged in an axial direction of the insertion portion 1, and the edge portion 12 may be the portion where the inclined surface intersects with the outer edge of the insertion portion 1. It can be understood that the visual field boundary line of the end where the first convex array area 21 and the second convex array area 22 are tangent coincides with the visual field boundary line of the corresponding tangent end of the second convex array area 22, that is, the connection where the first convex array area 21 and the second convex array area 22 are tangent forms a continuous visual field, and the overall ultrasonic visual field 24 of the first convex array area 21 and the second convex array area 22 is as shown in FIG. Figure 2As shown, it is greater than or equal to 180 degrees; the ultrasound boundary line 241 of the ultrasound field of view 24 of the first convex array area 21 away from the second convex array area 22 intersects with the edge 12 of the insertion portion 1, that is, the field of view of the first convex array area 21 can see the edge 12 of the insertion portion 1, and the field of view covers the area where the puncture needle 3 is located, so that the field of view of the ultrasonic transducer 2 can see the puncture needle 3 in real time. Optionally, for the array element closest to the needle outlet in the first convex array area 21, its extended line of direction can intersect with the edge 12, so that the field of view of the first convex array area 21 can cover the edge 12 of the insertion portion 1.

[0036] In addition, please continue to refer to Figure 2 In some embodiments, the head end 11 is provided with an objective lens 4, and the first side boundary 41 of the field of view of the objective lens 4 covers the area corresponding to the axial direction of the insertion portion 1. In other words, the objective lens 4 can see the axial part of the field of view of the mirror body, reducing the difficulty of insertion. After the most convex point 23 of the ultrasonic transducer 2 is away from the needle outlet, it is also beneficial to make the most convex point 23 avoid the field of view of the objective lens 4, and avoid the most convex point 23 of the ultrasonic transducer 2 blocking the field of view of the objective lens 4. By reasonably setting the position of the objective lens 4, the first side boundary 41 of the field of view of the objective lens 4 can cover the area corresponding to the axial direction of the insertion portion 1, that is, the objective lens 4 can see the field of view of the part corresponding to the axial direction of the insertion portion 1, thereby reducing the difficulty of insertion.

[0037] Further, in some embodiments, the second side boundary 42 of the field of view of the objective lens 4 covers the edge 12 of the insertion portion 1. That is, the objective lens 4 can see the edge 12 of the insertion portion 1, has a wide field of view, and can obtain more comprehensive information.

[0038] In addition, in order to facilitate the adjustment of the needle exit direction of the puncture needle 3, please refer to Figure 1 In some embodiments, the head end 11 is provided with a rotatable forceps lifter 5, which is located inside the insertion portion 1 and below the puncture needle 3. The puncture needle 3 passes through the instrument channel 13 for passing through and is placed on the top of the forceps lifter 5, so that the exit direction of the puncture needle 3 can be adjusted by rotating the forceps lifter 5. In other words, in this embodiment, by rotating the forceps lifter 5, the top of the forceps lifter 5 pushes the puncture needle 3 to change its angle as the forceps lifter 5 rotates, thereby achieving the purpose of adjusting the exit direction of the puncture needle 3. It should be noted that this embodiment does not limit the specific setting method of the rotatable forceps lifter 5, as long as the forceps lifter 5 is rotatable and can drive the puncture needle 3 to adjust the exit direction.

[0039] For further information, please refer to Figure 1In some embodiments, the insertion portion 1 is provided with an instrument channel 13 connected to the needle outlet, and the instrument channel 13 is used for the puncture needle 3 to pass through. That is, the puncture needle 3 in this embodiment passes through the instrument channel 13 inside the insertion portion 1, and the instrument channel 13 guides the puncture needle 3, which is conducive to the puncture needle 3 passing through the needle outlet for puncture. Of course, other required instruments can also be placed in the instrument channel 13 for diagnosis and treatment.

[0040] Further, in some embodiments, the instrument channel 13 is at an angle of 0-20 degrees relative to the center line of the insertion portion 1, that is, the instrument channel 13 in this embodiment can be tilted, and it has a certain angle relative to the center line of the insertion portion 1, so that the puncture needle 3 has a certain angle after passing through the instrument channel 13. In this embodiment, the instrument channel 13 is at an angle of 0-20 degrees relative to the center line of the insertion portion 1, that is, the needle exit angle of the puncture needle 3 is within the range of 0-20 degrees.

[0041] The inventors have found that in order to lift the puncture needle 3 to a larger angle, the size of the lifting clamp 5 often needs to be larger. Further, in some embodiments, the instrument channel 13 is at an angle of 5-15 degrees relative to the center line of the insertion portion 1. This embodiment can make the puncture needle 3 have an initial needle exit angle when it is removed, and the overall angle range required for lifting is smaller, which can avoid the use of a large-sized lifting clamp 5, thereby reducing the size of the lifting clamp 5, which is conducive to ensuring the miniaturization of the probe.

[0042] Furthermore, in some embodiments, the exit angle of the puncture needle 3 is 10 degrees, that is, the exit angle of the puncture needle 3 is relatively small, which is conducive to making the puncture needle 3 close to the axial direction of the insertion part 1 after exiting from the needle outlet, so that the puncture needle 3 can puncture a special part that is relatively close to the axial direction of the insertion part 1, for example, puncture the fundus of the stomach; and, because the exit angle of the puncture needle 3 is small, the puncture needle 3 is closer to the axial direction of the insertion part 1, so the puncture force of the puncture needle 3 in the axial direction of the insertion part 1 can be increased, making it easier to puncture. In addition, in order to facilitate the removal of the needle, such as Figure 1 As shown, in some embodiments, the head end 11 is provided with an inclined surface 111 inclined relative to the axial direction of the insertion part 1, and the needle outlet is provided on the inclined surface 111. It can be understood that when the puncture needle 3 has a certain needle outlet angle, the puncture needle 3 has a certain angle relative to the axial direction of the insertion part 1. Therefore, in order to facilitate the needle outlet angle of the puncture needle 3, the present embodiment provides an inclined surface 111 inclined relative to the axial direction of the insertion part 1 at the head end 11, and the needle outlet is provided on the inclined surface 111 to ensure the needle outlet angle of the puncture needle 3 and facilitate the needle outlet.

[0043] It should be noted that the present embodiment does not limit the specific inclination angle of the inclined surface 111, and those skilled in the art may set it according to actual needs.

[0044] In addition, please continue to refer to Figure 1 In some embodiments, an acoustic lens 25 is provided at the periphery of the ultrasonic transducer 2. The acoustic lens 25 is used to focus the ultrasonic beam.

[0045] In addition to the above-mentioned ultrasonic endoscope probe, the present invention also provides an ultrasonic endoscope including the ultrasonic endoscope probe disclosed in the above-mentioned embodiment. For the structures of other parts of the ultrasonic endoscope, please refer to the prior art and will not be described in detail herein.

[0046] The focus of this embodiment is to use the ultrasonic endoscopic probe disclosed in any of the above embodiments, which has the same beneficial effects as the above ultrasonic endoscopic probe, and will not be repeated here.

[0047] In addition to the above-mentioned ultrasonic endoscope probe and ultrasonic endoscope, the utility model also provides an ultrasonic endoscope system including the ultrasonic endoscope disclosed in the above-mentioned embodiment. For the structures of other parts of the ultrasonic endoscope system, please refer to the existing technology or future developed technology, which will not be described in detail in this article.

[0048] The focus of this embodiment is to use the above-mentioned ultrasonic endoscope, which has the ultrasonic endoscope probe disclosed in any one of the above-mentioned embodiments. Therefore, the ultrasonic endoscope system also has the same beneficial effects as the above-mentioned ultrasonic endoscope probe, which will not be repeated here.

[0049] It should also be noted that, in this specification, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0050] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0051] The ultrasonic endoscope probe and ultrasonic endoscope provided by the utility model are introduced in detail above. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. An ultrasonic endoscope probe, characterized in that: The invention comprises an insertion part (1), wherein the head end (11) of the insertion part (1) is provided with an ultrasonic transducer (2) and a needle exit port for a puncture needle (3) to enter and exit, wherein the ultrasonic transducer (2) comprises a plurality of transducer array elements arranged in series, wherein all the transducer array elements form a first convex array region (21) and a second convex array region (22), wherein the first convex array region (21) and the second convex array region (22) are tangent at their connection, and the tangent point is the most convex point (23) of the ultrasonic transducer (2) on the side where the needle exit port is located, wherein the end of the first convex array region (21) away from the second convex array region (22) is close to the needle exit port, and the curvature of the first convex array region (21) is smaller than the curvature of the second convex array region (22).

2. The ultrasonic endoscope probe according to claim 1, characterized in that: The curvature of the second convex array area (22) is in a multiple relationship with the curvature of the first convex array area (21).

3. The ultrasonic endoscope probe according to claim 1, characterized in that: The shape of the second convex array area (22) is semicircular, the lower outer edge of the second convex array area (22) away from the first convex array area (21) is tangent to the lower outer edge of the insertion part (1), and the diameter of the second convex array area (22) is less than or equal to the distance between the needle outlet and the lower outer edge of the insertion part (1).

4. The ultrasonic endoscope probe according to claim 1, characterized in that: An ultrasonic boundary line (241) of the first convex array area (21) away from the field of view of the second convex array area (22) intersects with an edge portion (12) of the insertion portion (1).

5. The ultrasonic endoscope probe according to claim 1, characterized in that: The head end (11) is provided with an objective lens (4), and a first side boundary (41) of the field of view of the objective lens (4) covers an area corresponding to the axial direction of the insertion portion (1); and a second side boundary (42) of the field of view of the objective lens (4) covers an edge portion (12) of the insertion portion (1).

6. The ultrasonic endoscope probe according to any one of claims 1 to 5, characterized in that: The head end (11) is provided with a rotatable lifting clamp (5), and the lifting clamp (5) is located inside the insertion part (1) and below the puncture needle (3). After the puncture needle (3) passes through the instrument channel (13) for its passage, it is placed on the top of the lifting clamp (5), so that the needle exit direction of the puncture needle (3) can be adjusted by rotating the lifting clamp (5).

7. The ultrasonic endoscope probe according to any one of claims 1 to 5, characterized in that: An instrument channel (13) connected to the needle outlet is provided inside the insertion portion (1) for allowing the puncture needle (3) to pass through. The instrument channel (13) is at an angle of 0-20 degrees relative to the center line of the insertion portion (1).

8. The ultrasonic endoscope probe according to any one of claims 1 to 5, characterized in that: The head end (11) is provided with an inclined surface (111) which is arranged obliquely relative to the axial direction of the insertion portion (1), and the needle outlet is arranged on the inclined surface (111).

9. The ultrasonic endoscope probe according to any one of claims 1 to 5, characterized in that: An acoustic lens (25) is provided on the outer periphery of the ultrasonic transducer (2).

10. An ultrasonic endoscope, characterized in that: The ultrasonic endoscope probe comprises the ultrasonic endoscope probe according to any one of claims 1 to 9.

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