Front end part, ultrasonic endoscope and endoscope system

Abstract

The utility model provides a front end part, an ultrasonic endoscope and an endoscope system. The endoscope system comprises image processing equipment, light source equipment, display equipment and the ultrasonic endoscope, the ultrasonic endoscope comprises a connecting part, an operating part and an inserting part, wherein the inserting part comprises a front end part. The front end part is connected with the front end of a bending part in the ultrasonic endoscope and comprises a connecting cylinder and a rear end seat sleeved outside the connecting cylinder; a limiting part is formed on the outer wall of the connecting cylinder, the rear end seat is connected with the bent part through a fastener, and the fastener can be matched with the limiting part in an abutting or inserting mode in the circumferential direction so as to form circumferential limiting matching or connection between the connecting cylinder and the rear end seat. According to the ultrasonic endoscope, a screw between the rear end seat and the connecting cylinder is omitted, the hard length of the front end part is greatly reduced, so that when the bending part is bent, the front end part cannot affect the insertion of the insertion part into each corner in a human body, the treatment effect of the ultrasonic endoscope is improved, and the application range of the ultrasonic endoscope is widened.

Description

Technical Field

[0001] The present application belongs to the technical field of medical devices, and more specifically, to a front end portion, an ultrasonic endoscope, and an endoscope system. Background Art

[0002] As a new type of medical diagnostic equipment, the ultrasonic endoscope integrates ultrasonic imaging and optical imaging functions. When used, the ultrasonic endoscope can not only scan in real time through ultrasonic imaging to obtain ultrasonic images of different internal tissues of the human body, but also scan through optical imaging to obtain the surface morphological characteristics of internal tissues of the human body, effectively improving the efficiency and quality of medical diagnosis.

[0003] The insertion part is the part of the ultrasonic endoscope that is used to enter the human body through the natural orifice of the human body or the incision formed by surgery. The insertion part includes the front end, the bending part and the flexible part connected in sequence, wherein the front end is the hardest and non-bendable part of the insertion part. When the bending part is bent, if the length of the front end is too long, the front end will be tilted to a higher position, resulting in the problem that the corners of the stomach, especially the "greater curvature of the stomach", cannot be inspected and treated. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a front end portion, an ultrasonic endoscope and an endoscope system to solve the technical problem in the prior art that the front end is too long, resulting in many parts being unable to be detected and treated.

[0005] To achieve the above-mentioned purpose, the technical solution adopted in the present application is: in the first aspect, a front end portion is provided, which is configured to be connected to the front end of the bending portion in the ultrasonic endoscope, and the front end portion includes a connecting tube and a rear end seat sleeved outside the connecting tube; the outer wall of the connecting tube forms a limiting portion, and the rear end seat is connected to the bending portion through a fastener, and the fastener can be circumferentially abutted or plug-fitted with the limiting portion to form a circumferential limiting fit or connection between the connecting tube and the rear end seat.

[0006] In one embodiment, the limiting portion includes a limiting groove, and the fastener can extend into the limiting groove to abut against the inner wall of the limiting groove to form a circumferential rotation limit for the connecting cylinder and the rear end seat.

[0007] In one embodiment, the limiting groove has two first inner walls distributed along the circumference of the connecting tube and forming an angle with each other, and the two first inner walls are used to respectively abut and cooperate with different positions on the end surface of the fastener away from the rear end seat.

[0008] In one embodiment, the angle between the first inner wall and the axial direction of the fastener is in the range of 30°-60°.

[0009] In one embodiment, the limiting groove further has a second inner wall, and the second inner wall is used to abut and cooperate with the fastener along the axial direction of the connecting cylinder.

[0010] In one embodiment, a protrusion is protruding from the outer wall of the connecting tube, and the limiting groove is formed on the protrusion.

[0011] In one embodiment, the inner wall of the rear end seat is formed with a first step surface, and the outer wall of the connecting tube is formed with a second step surface, and the first step surface and the second step surface can abut against each other to limit the rear end seat from moving toward the rear end relative to the connecting tube.

[0012] In one embodiment, the front end portion further includes a front end seat and an ultrasonic sensor, the front end seat is connected to the front end of the connecting tube, and the ultrasonic sensor is sleeved outside the connecting tube and axially limited between the front end seat and the rear end seat.

[0013] In one embodiment, the connecting tube is connected to the front end seat via a pin.

[0014] In a second aspect, the present application also provides an ultrasonic endoscope, comprising a connecting portion, an operating portion and an insertion portion, wherein the insertion portion includes the above-mentioned front end portion.

[0015] In a third aspect, the present application also provides an endoscope system, including an image processing device, a light source device, a display device and the above-mentioned ultrasonic endoscope.

[0016] The beneficial effects of the ultrasonic endoscope, ultrasonic endoscope and endoscope system provided by the present application are: a connection between the rear end seat and the bending part is formed by a fastener, and a circumferential limiting fit or connection between the rear end seat and the connecting tube is formed by a fastener and a limiting part, thereby eliminating the screws between the rear end seat and the connecting tube, and eliminating the need to connect the rear end seat to the bending part and the connecting tube respectively through two fasteners, thereby greatly reducing the rigid length of the front end part, so that when the bending part is bent, the insertion of the insertion part into various corners of the human body will not be affected by the front end part, thereby improving the therapeutic effect and scope of use of the ultrasonic endoscope. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A schematic diagram of the structure of an ultrasonic endoscope provided in an embodiment of the present application;

[0019] Figure 2 A schematic diagram of the structure of the front end portion of the ultrasonic endoscope provided in an embodiment of the present application;

[0020] Figure 3 A schematic axial cross-sectional view of the front end portion of an ultrasonic endoscope provided in an embodiment of the present application;

[0021] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure of AA;

[0022] Figure 5 for Figure 3 Schematic diagram of the cross-sectional structure of the middle BB;

[0023] Figure 6 A schematic diagram of the three-dimensional structure of a connecting tube at the front end of an ultrasonic endoscope provided in an embodiment of the present application;

[0024] Figure 7 This is a schematic diagram of the structure of the connecting tube at the front end of the ultrasonic endoscope provided in an embodiment of the present application from another angle.

[0025] Among them, the reference numerals in the figure are:

[0026] 1. Insertion part; 100. Front end; 110. Connecting tube; 111. Bump; 112. Limiting groove; 1121. First inner wall; 1122. Second inner wall; 1111. Second step surface; 113. Limiting part; 114. Second pin hole; 115. Through groove; 116. Connecting part; 120. Rear seat; 121. First step surface; 122. Cable cavity; 130. Front seat; 131. First pin hole; 132. Slot; 133. Functional port; 140. Ultrasonic sensor; 150. Front cover; 160. Fastener; 170. Pin; 200. Bending part; 210. Connector; 300. Flexible part; 2. Operating part; 3. Connecting part; 4. Ultrasonic cable. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0028] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0029] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] An ultrasonic endoscope generally includes a connecting portion, an operating portion and an insertion portion. Among them, the connecting portion is mainly used to connect the operating portion and the insertion portion. The operating portion is responsible for controlling the movement and operation of the endoscope. The insertion portion is used to enter the human body through the natural channels of the human body or the incision formed by surgery. The insertion portion includes a front end portion, a bending portion and a flexible portion connected in sequence, wherein the front end portion is a hard and non-bendable portion of the insertion portion. When the bending portion is bent, if the length of the front end portion is too long, the front end portion will be tilted to a higher position, which will eventually make it impossible to inspect and treat various corners of the human body. For example, it will make it impossible to inspect and treat various corners of the stomach, especially the "greater curvature of the stomach".

[0032] In order to solve the above problems, the embodiment of the present application provides a front end portion 100, an ultrasonic endoscope and an endoscope system, by forming a limiting portion 113 on the outer wall of the connecting tube 110, and the fastener 160 connecting the rear end seat 120 and the bending portion 200 is abutted against the limiting portion 113 to form a connection between the connecting tube 110 and the rear end seat 120. In this arrangement, the screw locking structure between the rear end seat 120 and the connecting tube 110 is eliminated, and the rigid length of the front end portion 100 is greatly reduced, so that when the bending portion 200 is bent, the insertion of the insertion portion 1 into various corners of the human body will not be affected by the front end 100, thereby improving the treatment effect and scope of use of the ultrasonic endoscope.

[0033] For ease of description, in the embodiment of the present application, the end of each structure in the front end portion 100 away from the bending portion 200 is called the front end, and the end of each structure in the front end portion 100 facing the bending portion 200 is called the rear end.

[0034] See also Figures 1 to 4, the front end portion 100 provided in the embodiment of the present application is now described. The front end portion 100 is configured to be connected to the front end of the curved portion 200 in the ultrasonic endoscope, and the front end portion 100 includes a connecting tube 110 and a rear end seat 120 sleeved outside the connecting tube 110, and the outer wall of the connecting tube 110 forms a limited portion 113, and the rear end seat 120 is connected to the curved portion 200 through a fastener 160, and the fastener 160 can be circumferentially abutted or plugged with the limited portion 113 to form a circumferential limited fit or connection between the connecting tube 110 and the rear end seat 120.

[0035] Among them, it should be noted that the connection between the rear end seat 120 and the bending portion 200 here refers to a connection with mutual pulling force between the rear end seat 120 and the bending portion 200, for example, a connection that can fix two components and there will be no relative movement between the two. When the two are connected, the corresponding parts of the rear end seat 120 and the bending portion 200 are relatively fixed and no relative movement occurs. This connection does not include a connection in which the rear end seat 120 and the bending portion 200 are merely in contact.

[0036] In addition, in actual applications, since the connecting tube 110 is very thin, the stability of the connecting tube 110 itself is poor, and the front end of the connecting tube 110 is generally connected to the front end seat 130 or the rear end seat 120. Therefore, it is necessary to form a circumferential limit fit or connection between the rear end of the connecting tube 110 and the rear end seat 120, so that the front end and the rear end of the connecting tube 110 can rotate synchronously, thereby avoiding the connection tube 110 from being deformed due to torsional deformation.

[0037] The front end portion 100 provided in the embodiment of the present application forms a connection between the rear end seat 120 and the bending portion 200 through the fastener 160, and also forms a circumferential limiting fit or connection between the rear end seat 120 and the connecting tube 110 through the fastener 160 and the limiting portion 113, thereby eliminating the screws between the rear end seat 120 and the connecting tube 110, and eliminating the need to connect the rear end seat 120 to the bending portion 200 and the connecting tube 110 respectively through two fasteners, thereby greatly reducing the rigid length of the front end portion 100, so that when the bending portion 200 is bent, the insertion of the insertion portion 1 into various corners of the human body will not be affected by the front end portion 100, thereby improving the therapeutic effect and scope of use of the ultrasonic endoscope.

[0038] In one embodiment, see Figure 3 and Figure 5 The front end portion 100 also includes a front end seat 130 connected to the front end of the connecting tube 110 , the front end seat 130 is connected to the rear end seat 120 , and the fastener 160 abuts against the limiting portion 113 to form a circumferential rotation restriction between the connecting tube 110 and the rear end seat 120 .

[0039] Among them, the connection between the front end seat 130 and the connecting tube 110 here refers to a connection between the connecting tube 110 and the front end seat 130 with mutual pulling force, for example, a connection that can fix two components together, and there will be no relative movement between the two. When an external force drives the rear end seat 120 to move, the connecting tube 110 moves with the front end seat 130. This connection does not include a connection in which the connecting tube 110 and the front end seat 130 are merely in contact.

[0040] The front end portion 100 and the rear end seat 120 may be directly connected or indirectly connected via other structures.

[0041] In addition, it should be noted that the fastener 160 is in contact with the limiting portion 113 to limit the circumferential rotation of the connecting tube 110 and the rear end seat 120, where the circumferential direction is the direction surrounding the axial direction of the connecting tube 110, that is, the circumferential direction of the connecting tube 110. When the circumferential rotation of the connecting tube 110 and the rear end seat 120 is limited, the corresponding parts of the rear end seat 120 and the connecting tube 110 rotate synchronously.

[0042] In this embodiment, the front end of the connecting tube 110 is connected to the front end seat 130, so that the front end of the connecting tube 110 is relatively fixed with the front end seat 130, and the front end of the connecting tube 110 can rotate along with the front end seat 130; at the same time, a circumferential rotation restriction is formed by the fastener 160 used to connect the rear end seat 120 and the bending portion 200 and the limiting portion 113 on the connecting tube 110, so that the rear end of the connecting tube 110 rotates along with the rear end seat 120, thereby avoiding the problem of torsional deformation of the connecting tube 110 due to inconsistent rotation of the front end and the rear end when the insertion portion 1 rotates.

[0043] In one embodiment, see Figure 3 The front end portion 100 further includes an ultrasonic sensor 140, which is sleeved outside the connecting tube 110. The ultrasonic sensor 140 is located between the front seat 130 and the rear seat 120 along the axial direction of the connecting tube 110. The ultrasonic sensor 140 is used for real-time scanning of ultrasonic imaging to obtain ultrasonic images of different internal tissues of the human body, thereby assisting medical diagnosis. The ultrasonic sensor 140 is connected to the ultrasonic host through an ultrasonic cable 4.

[0044] During assembly, in order to ensure the assembly reliability of the ultrasonic sensor 140, glue can also be applied to the position where the ultrasonic sensor 140 is connected to the front end seat 130, the rear end seat 120, and the connecting tube 110 to ensure the assembly reliability of the ultrasonic sensor 140, while also making the front end seat 130 and the rear end seat 120 indirectly connected.

[0045] In one embodiment, see Figure 3The bending portion 200 includes a connecting member 210 , a front end of the connecting member 210 is sleeved outside the rear end seat 120 , and the connecting member 210 is fixedly connected to the rear end seat 120 by a fastener 160 .

[0046] In one embodiment, see Figure 3 , Figure 4 , Figure 6 and Figure 7 The limiting portion 113 includes a limiting groove 112 , and the fastener 160 can extend into the limiting groove 112 to abut against the inner wall of the limiting groove 112 to form a circumferential rotation limit for the connecting tube 110 and the rear end seat 120 .

[0047] During assembly, the rear end seat 120 is sleeved outside the connecting tube 110, and the rear end seat 120, the connecting tube 110 and the bending portion 200 are positioned relative to each other. Then, the fastener 160 is sequentially passed through the connecting piece 210 of the bending portion 200 and the rear end seat 120, and the fastener 160 is rotated so that the fastener 160 locks the connecting piece 210 and the rear end seat 120. In the locked state, the bottom end of the fastener 160 extends into the limiting groove 112, and the outer wall of the bottom end of the fastener 160 abuts against the inner wall of the limiting groove 112, thereby limiting the circumferential rotation of the connecting tube 110 and the rear end seat 120.

[0048] In the above embodiment, it is only necessary to form the limiting groove 112 on the outer wall of the connecting tube 110 to form the connection between the connecting tube 110 and the rear end seat 120. The structure is simple, the machining accuracy of the limiting groove 112 is not high, and the matching accuracy between the fastener 160 and the limiting groove 112 is not high, thereby reducing the difficulty of machining and manufacturing the front end 100 and reducing the cost. It can be understood that in other embodiments of the present application, the limiting portion 113 can also be set as a protrusion, and a groove can be formed at the bottom end of the fastener 160, and the connection between the rear end seat 120 and the connecting tube 110 can be formed by the concave-convex matching between the protrusion and the groove; in addition, the fastener 160 and the limiting portion 113 can not only form a circumferential limit, but also form a fixed connection between the connecting tube 110 and the rear end seat 120, which is not limited here.

[0049] In one embodiment, see Figure 7 The limiting groove 112 has two first inner walls 1121 distributed along the circumference of the connecting tube 110. The two first inner walls 1121 are arranged at an angle to each other. The two first inner walls 1121 are used to respectively abut and cooperate with different positions on the end surface of the fastener 160 away from the rear end seat 120.

[0050] Among them, by setting two first inner walls 1121 at an angle to each other, different positions of the fastener 160 can be abutted and limited by the two first inner walls 1121, thereby achieving the positioning and centering of the fastener 160 and ensuring the circumferential limiting effect.

[0051] In one embodiment, see Figure 7 The angle between the first inner wall 1121 and the axial direction of the fastener 160 is in the range of 30°-60°. For example, the angle between the first inner wall 1121 and the axial direction of the fastener 160 can be 30°, 35°, 40°, 45°, 50°, 55° or 60°, etc. The axial direction of the fastener 160 is parallel to the radial direction of the connecting tube 110, that is, the fastener 160 connects the curved portion, the rear end seat 120 and the connecting tube 110 along the radial direction of the connecting tube 110. After the fastener 160 is locked, the outer peripheral edge of the bottom end of the fastener 160 generally abuts against the two first inner walls 1121, and the axial direction of the fastener 160 is arranged parallel to the center plane of the two first inner walls 1121. When the angle between the first inner wall 1121 and the axial direction of the fastener 160 is larger, the resistance of the first inner wall 1121 to the fastener 160 is larger, and the centering effect of the two first inner walls 1121 on the fastener 160 is worse; when the angle between the first inner wall 1121 and the axial direction of the fastener 160 is smaller, the resistance of the first inner wall 1121 to the fastener 160 is smaller, but the height of the limiting groove 112 along the axial direction of the fastener 160 to accommodate the fastener 160 of the same outer diameter is larger, resulting in a large depth of the limiting groove 112, which in turn leads to a large outer diameter of the connecting tube 110 and a large space occupied. In this regard, the present application limits the angle range between the first inner wall 1121 and the axial direction of the fastener 160 , thereby ensuring that the fastener 160 can be centered in the case of a shallow limiting groove 112 .

[0052] In a preferred embodiment, the angle between the first inner wall 1121 and the axial direction of the fastener 160 is 45°, that is, the two first inner walls 1121 form an angle of 90° with each other, thereby ensuring the centering and positioning effect of the two first inner walls 1121 on the fastener 160, while also ensuring that the depth of the limiting groove 112 will not be too deep, and the outer diameter of the connecting tube 110 will not be increased.

[0053] In one embodiment, see Figure 3 and Figure 7 The limiting groove 112 also has a second inner wall 1122, which is used to abut and cooperate with the fastener 160 along the axial direction of the connecting tube 110. In this way, the fastener 160 can be axially limited when the fastener 160 is locked, thereby achieving axial limitation of the connecting tube 110 and the rear end seat 120 at the fastener 160 to improve the connection strength between the connecting tube 110 and the rear end seat 120.

[0054] In one embodiment, see Figure 7 The limiting groove 112 has a second inner wall 1122, which is disposed toward the rear end of the connecting tube 110 and is used to limit the fastener 160 toward the front end. Figure 3 and Figure 7 The limiting groove 112 axially penetrates the rear end of the connecting tube 110, so that the limiting groove 112 can be easily processed. It can be understood that in other embodiments of the present application, the limiting groove 112 can also be provided with two oppositely arranged second inner walls 1122, and the two second inner walls 1122 are respectively abutted against the fastener 160 for limiting, which is not the only limitation here.

[0055] In one embodiment, see Figure 3 , Figure 6 and Figure 7 , a protrusion 111 is convexly provided on the outer wall of the connecting tube 110, and a limiting groove 112 is formed on the protrusion 111. In this embodiment, in order to meet the depth of the limiting groove 112, the side wall of the connecting tube 110 needs to be thickened. If the side wall of the connecting tube 110 is thickened, not only the hardness of the entire front end portion 100 is increased, but also the front end portion 100 is made more bulky. In this embodiment, by protruding a protrusion 111 at a position corresponding to the limiting groove 112 on the outer wall of the connecting tube 110, and forming the limiting groove 112 on the protrusion 111, in this way, not only the functional requirements of the limiting groove 112 can be met, but also the entire connecting tube 110 will not be thickened, thereby avoiding the problem of the bulkiness of the front end portion 100.

[0056] The thickness of the protrusion 111 is limited according to the depth of the limiting groove 112 .

[0057] In one embodiment, see Figure 3 and Figure 4 A threaded hole is formed on the rear end seat 120, a through hole is formed on the connecting member 210, and the fastener 160 passes through the through hole and the threaded hole in sequence to lock the rear end seat 120 and the connecting member 210 together.

[0058] Alternatively, the fastener 160 can be a screw, a bolt or a stud. In addition, in other embodiments, the fastener 160 can also be a pin, and at this moment, the threaded hole on the rear end seat 120 can be changed into a through hole, thereby the thickness of the rear end seat 120 can be reduced.

[0059] In one embodiment, see Figure 4The front end portion 100 is provided with two fasteners 160, and the two fasteners 160 are symmetrically arranged along the circumference of the connecting tube 110. The connecting tube 110, the rear end seat 120 and the connecting piece 210 are connected at different positions along the circumference by the two fasteners 160, thereby ensuring the firmness and stability of the connection between the three.

[0060] Also, see Figure 4 The rear end seat 120 is formed with a plurality of cable cavities 122 which are spaced apart in sequence along the circumferential direction, and these cable cavities 122 are used for passing the ultrasonic cable 4 to limit the position of the ultrasonic cable 4. The threaded holes and the cable cavities 122 are staggered along the circumferential direction of the rear end seat 120, so that the fasteners 160 will not cause structural interference with the cables.

[0061] In one embodiment, see Figure 3 The inner wall of the rear end seat 120 is formed with a first step surface 121, and the outer wall of the connecting tube 110 is formed with a second step surface 1111. The first step surface 121 and the second step surface 1111 can abut against each other to limit the rear end seat 120 from moving toward the rear end relative to the connecting tube 110.

[0062] Specifically, during assembly, the ultrasonic sensor 140 and the rear end seat 120 are generally sleeved on the connecting tube 110, and then the connecting tube 110 is connected to the front end seat 130. However, during assembly, if there is no axial limit between the rear end seat 120 and the connecting tube 110, the rear end seat 120 will be displaced on the connecting tube 110 when the connecting tube 110 and the front end seat 130 are connected, which is inconvenient for assembly. In this embodiment, by setting the first step surface 121 and the second step surface 1111, the rear end seat 120 is axially limited after being sleeved on the connecting tube 110, and will not slide axially during the assembly process.

[0063] Specifically, the first step surface 121 is arranged toward the rear end of the rear end seat 120, and the second step surface 1111 is arranged toward the front end of the upper connecting tube 110. When the first step surface 121 and the second step surface 1111 are abutted against each other, the first step surface 121 is located on the front side of the second step surface 1111, thereby limiting the rear end seat 120 from moving toward the rear end relative to the connecting tube 110.

[0064] In one embodiment, see Figure 3 and Figure 6, the second step surface 1111 is formed on the protrusion 111, that is, the rear end seat 120 is limited by the protrusion 111 abutting against the first step surface 121 on the rear end seat 120. In this way, a protrusion 111 can not only realize the function of the limiting groove 112, but also realize the function of the second step surface 1111, which has a simple structure and reduces the manufacturing cost. In addition, since the first step surface 121 needs to be formed on the inner wall of the rear end seat 120, it is necessary to remove material from the position of the rear end seat 120 corresponding to the protrusion 111, so that the formation of the protrusion 111 does not increase the outer diameter of the entire front end portion 100.

[0065] In one embodiment, see Figure 5 and Figure 6 , the connecting tube 110 is connected to the front seat 130 through a pin 170. Specifically, a first pin hole 131 is formed on the front seat 130, and a second pin hole 114 is formed on the connecting tube 110. The pin 170 is driven into the second pin hole 114 through the first pin hole 131, thereby fixing the connecting tube 110 and the front seat 130 together. In this embodiment, since the front seat 130 and the connecting tube 110 are connected by the pin 170, it is only necessary to form the first pin hole 131 and the second pin hole 114 on the front seat 130 and the connecting tube 110, and there is no need to set a threaded hole on the connecting tube 110, so that the thickness of the connecting tube 110 can be thinner than at least two turns of thread (about 4mm) in the prior art, thereby greatly reducing the thickness of the entire front end portion 100, which is conducive to the insertion operation of the front end portion 100 in the human body. It can be understood that in other embodiments of the present application, the connecting tube 110 and the front end seat 130 may also be fastened by screws, riveted by rivets, or connected by mortise and tenon, etc., which is not the only limitation here.

[0066] In one embodiment, see Figures 5 to 7 The front end seat 130 is formed with a slot 132 that passes through its rear end surface, and the slot 132 is arc-shaped. The front end of the connecting tube 110 is formed with at least one through slot 115, and the through slot 115 passes through the connecting tube 110 along the radial direction of the connecting tube 110. The through slot 115 passes through the front end of the connecting tube 110, and the through slot 115 divides the front end of the connecting tube 110 into at least two plug-in parts 116, and the plug-in parts 116 are arc-shaped. At least two plug-in parts 116 are respectively inserted into the slot 132, and the circumferential limit connection and the axial limit connection between the connecting tube 110 and the front end seat 130 are formed through the plug-in cooperation between the slot 132 and the plug-in parts 116, and then the plug-in parts 116 are locked on the front end seat 130 by the pin 170 to ensure the reliability of the connection between the connecting tube 110 and the front end seat 130.

[0067] For details, please refer to Figure 5In order to realize the functions of the ultrasonic endoscope, the insertion part 1 needs to be installed with functional components such as imaging components, pipeline components and light source components, and these components need to pass through the connecting tube 110 and form a connection with the front end seat 130. Correspondingly, the front end seat 130 needs to form functional ports 133 corresponding to these functional components. In order to realize the functional diversification of the ultrasonic endoscope, the more the number and types of functional components, the better. However, the more the number of functional components, the larger the space they occupy in the connecting tube 110. At the same time, the more functional ports 133 on the front end seat 130, which will eventually lead to a large outer diameter of the entire front end 100. In this embodiment, by slotting the front end of the connecting tube 110, the outer diameter of the connecting tube 110 can be made small enough without causing structural interference with the functional ports 133 on the front end seat 130.

[0068] In addition, in the present application, since the connecting tube 110 is very thin and at least two through slots 115 are provided at the front end, the stability of the connecting tube 110 itself is poor. When the insertion portion 1 rotates, the front seat 130 at the front end of the connecting tube 110 will drive the connecting tube 110 to rotate together through the pin 170 at the front end of the connecting tube 110. This long cantilever structure is easily deformed under the action of torque. In the embodiment of the present application, the front end and the rear end of the connecting tube 110 can be rotated synchronously through the connection between the fastener 160 and the limiting portion 113, so that the connecting tube 110 can be prevented from being deformed due to torsion.

[0069] In one embodiment, see Figure 3 The front end portion 100 further includes a front end cover 150 , and the front end cover 150 is disposed on the outside of the front end seat 130 to form an appearance structure of the front end portion 100 .

[0070] Second, see Figure 1 The embodiment of the present application also provides an ultrasonic endoscope, comprising a connecting portion 3, an operating portion 2 and an insertion portion 1. The insertion portion 1, the operating portion 2 and the connecting portion 3 are sequentially connected, the insertion portion 1 is used to be inserted into the patient's body, and the operator controls the insertion portion 1 to work in the patient's body through the operating portion 2.

[0071] The insertion portion 1 includes the front end portion 100 , the bending portion 200 , and the flexible portion 300 . The front end portion 100 , the bending portion 200 , and the flexible portion 300 are connected in sequence, and the flexible portion 300 is connected to the operation portion 2 .

[0072] The ultrasonic sensor 140 may include an ultrasonic probe and a position sensor.

[0073] In addition, the endoscope is also provided with an imaging component, a light source component and a pipeline component. Among them, the imaging component is used to obtain an optical image of the lesion site of the human body, and the light source component is used for lighting, so that the imaging component can obtain an optical image. The pipeline component can be used to transport water and gas to the head end of the insertion part 1 to achieve the cleaning of the light source component and the imaging component. The pipeline component can also achieve the cleaning and gas injection of the human digestive tract, and is used to transport tools to the head end of the insertion part 1 to achieve surgery, or to aspirate tissue fluid in the patient's body. The connecting part 3 is used to achieve the communication connection between the imaging component and the image processing device, to achieve the electrical connection between the light source component and the light source device, and also to achieve the connection between the pipeline component and the water source and the gas source.

[0074] In the third aspect, the embodiment of the present application also provides an endoscope system, including an image processing device, a light source device, a display device and an ultrasonic endoscope. The ultrasonic endoscope is provided with an imaging component, a light source component and an ultrasonic sensor 140, wherein the light source device is used to provide a light source for the light source component in the endoscope to ensure that the endoscope can obtain images of the lesion site of the human body, the image processing device is communicatively connected with the imaging component in the endoscope, the image processing device is used to receive the optical image information transmitted by the imaging component and process the optical image information, the external ultrasonic host is used to receive the ultrasonic image information transmitted by the ultrasonic sensor 140 and process the ultrasonic image information, the display device is communicatively connected with the image processing device and the ultrasonic host 5 respectively, and the display device is used to display the processed ultrasonic image and optical image for the doctor to observe and assist the operation.

[0075] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A front end portion (100) configured to be connected to the front end of a curved portion (200) in an ultrasonic endoscope, characterized in that: The front end portion (100) comprises a connecting tube (110) and a rear end seat (120) sleeved outside the connecting tube (110); the outer wall of the connecting tube (110) forms a limiting portion (113), and the rear end seat (120) is connected to the bending portion (200) via a fastener (160); the fastener (160) can be circumferentially abutted or plug-fitted with the limiting portion (113) to form a circumferential limiting fit or connection between the connecting tube (110) and the rear end seat (120).

2. The front end portion (100) according to claim 1, characterized in that: The limiting portion (113) comprises a limiting groove (112), and the fastener (160) can extend into the limiting groove (112) to abut against the inner wall of the limiting groove (112) to form a circumferential rotation limit for the connecting tube (110) and the rear end seat (120).

3. The front end portion (100) according to claim 2, characterized in that: The limiting groove (112) has two first inner walls (1121) distributed along the circumference of the connecting tube (110) and forming an angle with each other, and the two first inner walls (1121) are used to respectively abut and cooperate with different positions on the end surface of the fastener (160) away from the rear end seat (120).

4. The front end portion (100) according to claim 3, characterized in that: The angle between the first inner wall (1121) and the axial direction of the fastener (160) ranges from 30° to 60°.

5. The front end portion (100) according to claim 3, characterized in that: The limiting groove (112) further has a second inner wall (1122), and the second inner wall (1122) is used for abutting and cooperating with the fastener (160) along the axial direction of the connecting tube (110).

6. The front end portion (100) according to claim 2, characterized in that: A protrusion (111) is convexly provided on the outer wall of the connecting tube (110), and the limiting groove (112) is formed on the protrusion (111).

7. The front end portion (100) according to any one of claims 1 to 6, characterized in that: The inner wall of the rear end seat (120) is formed with a first step surface (121), and the outer wall of the connecting tube (110) is formed with a second step surface (1111), and the first step surface (121) and the second step surface (1111) can abut against each other to limit the rear end seat (120) from moving toward the rear end relative to the connecting tube (110).

8. The front end portion (100) according to any one of claims 1 to 6, characterized in that: The front end portion (100) further comprises a front end seat (130) and an ultrasonic sensor (140), wherein the front end seat (130) is connected to the front end of the connecting tube (110), and the ultrasonic sensor (140) is sleeved outside the connecting tube (110) and axially limited between the front end seat (130) and the rear end seat (120); The connecting tube (110) is connected to the front end seat (130) via a pin (170).

9. An ultrasonic endoscope, characterized in that: It comprises a connecting portion (3), an operating portion (2) and an inserting portion (1), wherein the inserting portion (1) comprises a front end portion (100) according to any one of claims 1 to 8.

10. An endoscope system, characterized in that: It comprises an image processing device, a light source device, a display device and the ultrasonic endoscope as claimed in claim 9.

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