Endoscope tip, endoscope, and endoscope system

Abstract

The invention provides a front end part of an endoscope, the endoscope and an endoscope system. The endoscope system comprises the endoscope; the endoscope comprises a connecting part, an operating part and an inserting part, wherein the inserting part comprises a front end part; the front end portion comprises: a main body, the peripheral side surface of which has an assembly port to which a side cover is mounted; the rotating shaft is rotationally arranged in the main body; the clamp lifting device is fixedly connected to the rotating shaft; the transmission part is fixedly connected to the rotating shaft; a first supporting section of the rotating shaft is rotationally supported on the main body and is positioned between the clamp lifting device and the transmission part; along the axial direction of the rotating shaft, one end of the rotating shaft fixedly connected with the transmission part and the side cover are in clearance arrangement; in the axial direction of the rotating shaft, the first projection of the assembling opening covers the second projection of the rotating shaft, and the rear end face of the body is provided with a rear end opening used for disassembling and assembling the transmission part. The structure of the front end part is simplified, the diameter of the front end part is reduced, and discomfort caused by the large outer diameter of the front end part is reduced; the assembling opening is designed to be only used for assembling the rotating shaft, the size of the assembling opening is reduced, and the decontamination risk is reduced.

Description

Technical Field

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

[0002] In clinical practice, endoscopes are often used to examine patients in order to obtain high-definition images of pathological sites or extract tissues of pathological sites for clinical diagnosis through optical imaging, ultrasonic detection and other technologies. Endoscopes are mainly composed of a connection part, an operating part and an insertion part. The connection part is mainly used to connect to an external light source device, an ultrasonic processing unit, etc. The operating part is mainly used to control the extraction of the treatment instrument, the bending of the insertion part, etc., and the insertion part is used to insert into the human body for inspection.

[0003] In the related art, the structure of the front end portion of the insertion portion is relatively complex, so that the outer diameter of the front end portion cannot be further reduced, resulting in discomfort when the front end portion is inserted into the patient's body cavity. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a front end portion of an endoscope, an endoscope, and an endoscope system to solve the technical problem of the relatively complex structure of the front end portion existing in the prior art.

[0005] To achieve the above objectives, in the first aspect, the technical solution adopted by the present application is: a front end portion is provided, comprising:

[0006] A main body, wherein the peripheral side of the main body has an assembly opening, and the assembly opening is installed with a side cover;

[0007] A rotating shaft, rotatably disposed in the main body;

[0008] A clamp lifting device, fixedly connected to the rotating shaft;

[0009] A transmission member, fixedly connected to the rotating shaft;

[0010] The first support section of the rotating shaft is rotatably supported by the main body, and the first support section is located between the lifting clamp and the transmission member along the axial direction of the rotating shaft; along the axial direction of the rotating shaft, a gap is set between one end of the rotating shaft fixed with the transmission member and the side cover;

[0011] Along the axial direction of the rotating shaft, the first projection of the assembly opening covers the second projection of the rotating shaft, and the rear end surface of the main body has a rear port for disassembling and assembling the transmission member.

[0012] In some embodiments, the rotating shaft includes a first connecting section, a first supporting section and a second connecting section connected in sequence along its axial direction, the transmission member is fixedly connected to the first connecting section, the forceps lifting device is fixedly connected to the second connecting section, and the first supporting section is rotatably supported by the main body.

[0013] In some embodiments, the rotating shaft further includes a second supporting segment, the second supporting segment is connected to an end of the second connecting segment facing away from the first supporting segment, and the second supporting segment is rotatably supported by the main body.

[0014] In some embodiments, the forceps lifting device includes a rotating portion and a lifting portion, the rotating portion is fixedly connected to the second connecting section, and the lifting portion is connected to the rotating portion;

[0015] Along the axial direction of the rotating shaft, a first center plane of the rotating portion deviates from a second center plane of the lifting portion, and a first width of the rotating portion is less than half of a second width of the lifting portion.

[0016] In some embodiments, along the axial direction of the rotating shaft, one end of the rotating shaft to which the forceps lifter is fixed is provided with a gap between the end and the main body.

[0017] In some embodiments, along the axial direction of the rotating shaft, the third projection of the transmission member at least partially extends beyond the first projection of the assembly opening;

[0018] And / or, along the axial direction of the rotating shaft, the first projection area of ​​the assembly opening is smaller than the third projection area of ​​the transmission member

[0019] In some embodiments, the first projection is circular or quasi-circular.

[0020] In some embodiments, a center line of the assembly opening coincides with a center line of the rotating shaft.

[0021] In some embodiments, the difference between the inner diameter of the assembly opening and the maximum outer diameter of the rotating shaft ranges from 0.12 mm to 0.18 mm.

[0022] In some embodiments, the side cover is received in the assembly opening, and an outer peripheral wall of the side cover is bonded to an inner peripheral wall of the assembly opening.

[0023] In some embodiments, the assembly port includes a large diameter portion and a small diameter portion connected along the axial direction, and a step surface is connected between the large diameter portion and the small diameter portion; the side cover includes a cover body portion and an extension portion connected along the axial direction, the cover body portion is received in the large diameter portion and stopped at the step surface, and the extension portion is inserted into the small diameter portion and is set with a gap with the rotating shaft.

[0024] In some embodiments, the difference between the inner diameter of the small diameter portion and the maximum outer diameter of the shaft is in the range of 0.12 mm to 0.18 mm.

[0025] In some embodiments, the difference between the inner diameter of the large diameter portion and the inner diameter of the small diameter portion ranges from 0.2 mm to 0.3 mm.

[0026] In some embodiments, the outer peripheral surface of the extension portion includes a fool-proof plane.

[0027] In some embodiments, the end surface of the rotating shaft fixedly connected to the transmission member is flush with the end surface of the transmission member.

[0028] In a second aspect, the present application also provides an endoscope, comprising a connecting portion, an operating portion and an insertion portion, wherein the insertion portion includes the above-mentioned front end portion.

[0029] In a third aspect, the present application also provides an endoscope system, including an image processing device, a light source device and the above-mentioned endoscope.

[0030] The beneficial effects of the front end portion of the endoscope, the endoscope and the endoscope system provided by the present application are as follows: by rotatably supporting the first supporting section of the rotating shaft to the main body, the first supporting section is located between the lifting forceps and the transmission member along the axial direction of the rotating shaft, and along the axial direction of the rotating shaft, a gap is set between the side cover and the end of the rotating shaft fixed with the transmission member, that is, the end of the rotating shaft fixed with the transmission member will not form a bearing support with the side cover / main body, and there is no need to extend the rotating shaft axially relative to the transmission member to form a connection with the side cover, thereby simplifying the structure between the rotating shaft, the side cover and the main body, simplifying the structure of the front end portion, reducing the diameter of the front end portion, and reducing the discomfort caused by the large outer diameter of the insertion portion. In addition, along the axial direction of the rotating shaft, the first projection of the assembly port covers the second projection of the rotating shaft, and the rear end face of the main body has a rear port for disassembly and assembly of the transmission member, that is, the design of the assembly port can be used only for disassembly and assembly of the rotating shaft, and there is no need to use the assembly port for disassembly and assembly of the rotating shaft and the transmission member at the same time as in the related art, so that the size of the assembly port only needs to meet the assembly of the rotating shaft, so that the caliber of the assembly port can be reduced, and a good sealing effect is formed while minimizing the lateral opening, and at the same time, the risk of disinfection is effectively reduced. In addition, the reduction of the assembly port makes the outer surface of the side cover more flush with the outer peripheral surface of the main body, that is, the surface of the front end is smoother, reducing the discomfort caused by the insertion of the front end into the body cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] 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.

[0032] Figure 1 A schematic diagram of the structure of an endoscope provided in an embodiment of the present application;

[0033] Figure 2A schematic diagram of the three-dimensional structure of the front end portion of the endoscope provided in an embodiment of the present application;

[0034] Figure 3 A schematic diagram of the side structure of the front end portion of the endoscope provided in an embodiment of the present application;

[0035] Figure 4 Another side structural diagram of the front end portion of the endoscope provided in an embodiment of the present application;

[0036] Figure 5 A schematic diagram of the AA cross-sectional structure of the front end portion of the endoscope provided in an embodiment of the present application;

[0037] Figure 6 A schematic diagram of the assembly of the rotating shaft, the forceps lifting device and the transmission member in the endoscope provided in the embodiment of the present application;

[0038] Figure 7 A schematic diagram of the structure of the rotating shaft of the endoscope provided in an embodiment of the present application;

[0039] Figure 8 A schematic diagram of the structure of the forceps lifting device in the endoscope provided in an embodiment of the present application;

[0040] Fig. 9 A schematic diagram of the structure of a side cover in an endoscope provided in an embodiment of the present application;

[0041] Fig.10 Schematic diagram of the AA cross-sectional structure of the front end portion of an endoscope provided in other embodiments of the present application.

[0042] Among them, the reference numerals in the figure are:

[0043] 1. Insertion portion; 100. Front end portion; 110. Main body; 111. Assembly port; 1111. Large diameter portion; 1112. Small diameter portion; 1113. Step surface; 112. Rear port; 113. First cavity; 114. Second cavity; 115. First bearing hole; 116. Second bearing hole; 120. Rotating shaft; 121. First connecting section; 122. First supporting section; 123. Second connecting section; 124. Second supporting section; 125. Threaded hole; 126. Annular groove; 130, lifting forceps; 131, rotating part; 132, lifting part; 140, transmission part; 141, sleeve part; 142, installation part; 150, side cover; 151, cover body; 152, extension part; 1521, fool-proof plane; 160, sealing ring; 170, back cover; 200, bending part; 300, flexible part; 400, ultrasonic probe; 2, operating part; 3, connecting part; 4, ultrasonic cable; 5, wire rope; X1, first direction. DETAILED DESCRIPTION

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] In clinical practice, endoscopes are often used to examine patients in order to obtain high-definition images of pathological sites or extract tissues of pathological sites for clinical diagnosis through optical imaging, ultrasonic detection and other technologies. Endoscopes are mainly composed of a connection part, an operating part and an insertion part. The connection part is mainly used to connect to an external light source device, an ultrasonic processing unit, etc. The operating part is mainly used to control the extraction of the treatment instrument, the bending of the insertion part, etc., and the insertion part is used to insert into the human body for inspection.

[0049] The front end of the insertion part generally includes a main body, a rotating shaft, a forceps lifter and a transmission member. The transmission member and the forceps lifter are respectively installed on the rotating shaft. The transmission member is connected to the control mechanism in the operating part through a steel wire. The control mechanism drives the transmission member to rotate through the steel wire, thereby driving the rotating shaft and the forceps lifter to rotate. The forceps lifter rotates to change the direction in which the biopsy forceps and lithotripsy baskets and other diagnostic and treatment accessories inserted through the channel tube extend out from the channel opening. However, the assembly structure of the rotating shaft, the forceps lifter and the transmission member in the main body is relatively complex, resulting in a larger outer diameter of the front end. When the front end is inserted into the patient's body cavity, it is easy to cause discomfort, and the movement flexibility of the insertion part is not high, which affects the inspection effect.

[0050] To this end, the embodiment of the present application provides a front end portion 100 of an endoscope, an endoscope, and an endoscope system, which, on the one hand, reduces the outer diameter of the front end portion 100 as much as possible by simplifying the support cooperation between the rotating shaft 120 and the main body 110, thereby reducing the discomfort caused by the front end portion 100 being inserted into the patient's body cavity. On the other hand, the assembly port 111 on the peripheral side of the main body 110 is used for disassembly and assembly of the rotating shaft 120, and the transmission member 140 is disassembled and assembled through the rear port 112 on the rear end face of the main body 110, so that the size of the assembly port 111 can be greatly reduced, and the influence of the assembly port 111 and the side cover 150 in the assembly port 111 on the surface of the entire front end portion 100 is reduced, thereby reducing the discomfort caused by the front end portion 100 being inserted into the patient's body cavity.

[0051] See also Figures 1 to 5 The front end portion 100 of the endoscope provided in the embodiment of the present application is now described in detail. The front end portion 100 includes a main body 110, a rotating shaft 120, a forceps lifter 130, a transmission member 140 and a side cover 150. The circumferential side surface of the main body 110 has an assembly opening 111, and the assembly opening 111 is installed with a side cover 150; the rotating shaft 120 is rotatably arranged in the main body 110; the forceps lifter 130 is fixedly connected to the rotating shaft 120; the transmission member 140 is fixedly connected to the rotating shaft 120; the first supporting section 122 of the rotating shaft 120 is rotatably supported by the main body 110, and the first supporting section 122 is located between the forceps lifter 130 and the transmission member 140 along the axial direction of the rotating shaft 120; along the axial direction of the rotating shaft 120, one end of the rotating shaft 120 to which the transmission member 140 is fixed is arranged with a gap between the side cover 150; along the axial direction of the rotating shaft 120, the first projection of the assembly opening 111 covers the second projection of the rotating shaft 120, and the rear end face of the main body 110 has a rear port 112 for disassembling and assembling the transmission member 140.

[0052] It should be noted that the rotating shaft 120 is rotatably disposed in the main body 110, which means that the rotating shaft 120 is disposed in the main body 110, and the rotating shaft 120 can rotate in the main body 110 under the action of an external force. For example, the rotating shaft 120 and the main body 110 can be rotatably connected by rotating the cylindrical surfaces.

[0053] It should be noted that the forceps lifter 130 is fixedly connected to the rotating shaft 120, which means that after assembly, the forceps lifter 130 and the rotating shaft 120 can be relatively fixed. Specifically, the forceps lifter 130 and the rotating shaft 120 are fixed along the circumferential direction so that the forceps lifter 130 and the rotating shaft 120 can rotate synchronously, and the forceps lifter 130 and the rotating shaft 120 are fixed along the axial direction so that the forceps lifter 130 and the rotating shaft 120 will not move along the axial direction. The forceps lifter 130 and the rotating shaft 120 can be disassembled from each other, so as to facilitate the detachment of the rotating shaft 120 and the forceps lifter 130 from the main body 110 respectively. In addition, the fixed connection between the transmission member 140 and the rotating shaft 120 has the same meaning as above, and will not be repeated here.

[0054] The forceps lifter 130 and the transmission member 140 are respectively fixed to the rotating shaft 120 and are arranged at intervals along the axial direction of the rotating shaft 120. The first support section 122 of the rotating shaft 120 is rotatably supported by the main body 110. The first support section 122 is located between the forceps lifter 130 and the transmission member 140 along the axial direction of the rotating shaft 120, that is, the rotating shaft 120 is rotatably connected to the main body 110 through the first support section 122 located between the forceps lifter 130 and the transmission member 140. The transmission member 140 is arranged to be connected to the control mechanism of the operating part 2 through the wire rope 5, and the control mechanism drives the transmission member 140, the rotating shaft 120 and the forceps lifter 130 to rotate in the main body 110 through the wire rope 5.

[0055] It should be noted that, along the axial direction of the rotating shaft 120, a gap is set between one end of the rotating shaft 120 to which the transmission member 140 is fixed and the side cover 150, which means that there is a gap between the side cover 150 and the end surface of the rotating shaft 120, so that the rotating shaft 120 can rotate flexibly in the main body 110, and the side cover 150 will not cause structural interference to the rotation of the rotating shaft 120. At the same time, the distance between the side cover 150 and the rotating shaft 120 is not large, so as to ensure that the entire front end portion 100 is compactly arranged along the axial direction. In other words, the meaning of the gap setting in this application is the same as the gap fit.

[0056] It should be noted that, along the axial direction of the shaft 120, the first projection of the assembly opening 111 covers the second projection of the shaft 120, which means that the second projection of the shaft 120 falls within the first projection of the assembly opening 111, and the range of the first projection of the shaft 120 can be less than or equal to the range of the second projection of the assembly opening 111, so that the shaft 120 can be taken out through the assembly opening 111 along its axial direction to realize the disassembly of the shaft 120.

[0057] It should be noted that the main body 110 is generally cylindrical, the peripheral side surface of the main body 110 refers to the side surface of the main body 110 along the peripheral direction, the rear end surface of the main body 110 refers to the end surface of the main body 110 facing the operating part 2, and the front end surface of the main body 110 refers to the end surface of the main body 110 away from the operating part 2. Among them, the assembly port 111 is provided on the peripheral side surface of the main body 110, and the rear port 112 is provided on the rear end surface of the main body 110. When disassembling and assembling, the transmission member 140 can be first installed into the main body 110 from the rear port 112 of the main body 110, and then the rotating shaft 120 can be installed into the main body 110 from the assembly port 111 on the peripheral side surface of the main body 110.

[0058] The front end portion 100 provided in the embodiment of the present application is rotatably supported by the first supporting section 122 of the rotating shaft 120 on the main body 110, and the first supporting section 122 is located between the lifting forceps 130 and the transmission member 140 along the axial direction of the rotating shaft 120, and along the axial direction of the rotating shaft 120, a gap is set between the side cover 150 and the end of the rotating shaft 120 fixedly connected with the transmission member 140, that is, the end of the rotating shaft 120 fixedly connected with the transmission member 140 will not form a bearing support with the side cover 150 / the main body 110, and there is no need to extend the rotating shaft 120 axially relative to the transmission member 140 to form a connection with the side cover 150, thereby simplifying the structure between the rotating shaft 120, the side cover 150 and the main body 110, simplifying the structure of the front end portion 100, reducing the diameter of the front end portion 100, and reducing the discomfort caused by the large outer diameter of the insertion portion 1. In addition, along the axial direction of the rotating shaft 120, the first projection of the assembly port 111 covers the second projection of the rotating shaft 120, and the rear end face of the main body 110 has a rear port 112 for disassembling and assembling the transmission member 140, that is, the design of the assembly port 111 can be used only for the disassembly and assembly of the rotating shaft 120, and there is no need to use the assembly port 111 for the disassembly and assembly of the rotating shaft 120 and the transmission member 140 at the same time as in the related art, so that the size of the assembly port 111 only needs to meet the assembly of the rotating shaft 120, so that the caliber of the assembly port 111 can be reduced, and a good sealing effect can be formed while minimizing the lateral opening, and the risk of decontamination is effectively reduced. At this time, if the first projection of the assembly port 111 is set to be circular or quasi-circular, it is only necessary to design the minimum inner diameter of the assembly port 111 to be slightly larger than the maximum outer diameter of the rotating shaft 120, which not only further reduces the caliber of the assembly port 111, but also makes the surface of the assembly port 111 smooth and without square corners, and is not prone to problems such as reduced sealing effect and increased decontamination risk due to processing and use. In addition, the reduction of the assembly opening 111 makes the outer surface of the side cover 150 more flush with the outer peripheral surface of the main body 110, that is, the surface of the front end portion 100 is smoother, reducing the discomfort caused by the front end portion 100 being inserted into the body cavity.

[0059] In some embodiments, see Figures 5 to 7 The rotating shaft 120 includes a first connecting section 121, a second connecting section 123 and a first supporting section 122. The first connecting section 121, the first supporting section 122 and the second connecting section 123 are connected in sequence along the axial direction of the rotating shaft 120. The transmission member 140 is fixed to the first connecting section 121, the lifting forceps 130 is fixed to the second connecting section 123, the first supporting section 122 is supported by the main body 110 and forms a rotational connection with the main body 110, and the end surface of the first connecting section 121 and the side cover 150 are arranged along the axial gap of the rotating shaft 120.

[0060] In some embodiments, see Figures 5 to 7, the rotating shaft 120 also includes a second supporting section 124, and the second supporting section 124 is connected to the end of the second connecting section 123 away from the first supporting section 122, that is, the rotating shaft 120 includes the first connecting section 121, the first supporting section 122, the second connecting section 123 and the second supporting section 124 connected in sequence along its axial direction, the transmission member 140 is fixed to the first connecting section 121, the forceps lifting device 130 is fixed to the second connecting section 123, and the first supporting section 122 and the second supporting section 124 are respectively rotatably supported by the main body 110. In this embodiment, the rotating shaft 120 is supported by the main body 110 through the first supporting section 122 and the second supporting section 124, so as to ensure the support stability of the rotating shaft 120 in the main body 110, and ensure the rotation stability of the rotating shaft 120, the transmission member 140 and the forceps lifting device 130.

[0061] In some embodiments, see Figure 5 The axial length of the second support section 124 is smaller than that of the first support section 122, and the first support section 122 serves as the main support portion of the rotating shaft 120 and the main body 110. Since the transmission member 140 and the forceps lifter 130 are respectively located on opposite sides of the first support section 122, the first support section 122 is used as the main support portion of the rotating shaft 120, which can ensure the force stability of the rotating shaft 120 and the rotation stability of the transmission member 140 and the forceps lifter 130. The second support section 124 can reduce the axial length of the rotating shaft 120 as much as possible while enhancing the supporting strength of the main body 110 on the rotating shaft 120, so as to reduce the influence of the rotating shaft 120 on the outer diameter of the entire front end portion 100.

[0062] In some embodiments, see Figure 6 and Figure 8The forceps lifting device 130 includes a rotating portion 131 and a lifting portion 132. The rotating portion 131 is fixed to the second connecting section 123 of the rotating shaft 120. The lifting portion 132 is connected to the rotating portion 131. The lifting portion 132 is used to lift the diagnosis and treatment accessory to a preset angle when the rotating portion 131 rotates. Along the axial direction of the rotating shaft 120, the first center plane of the rotating portion 131 deviates from the second center plane of the lifting portion 132, and the first width of the rotating portion 131 is less than half of the second width of the lifting portion 132. Among them, the first center plane and the second center plane are both planes perpendicular to the axial direction of the rotating shaft 120, and the first center plane is the plane of the rotating portion 131 along the axial center position of the rotating shaft 120, the second center plane is the plane of the lifting portion 132 along the axial center position of the rotating shaft 120, the first width is the axial width dimension of the rotating portion 131 along the rotating shaft 120, and the second width is the axial width dimension of the lifting portion 132 along the rotating shaft 120. In this embodiment, by setting the center planes of the rotating portion 131 and the lifting portion 132 offset from each other and reducing the first width of the rotating portion 131, the axial length of the second connecting section 123 of the rotating shaft 120 can be reduced, the total length of the rotating shaft 120 can be reduced, and the outer diameter of the entire front end portion 100 can be reduced. In addition, the reduction of the second connecting section 123 can relatively increase the length of the first supporting section 122, and thus ensure the supporting stability of the rotating shaft 120 in the main body 110.

[0063] In some embodiments, see Figure 5 The main body 110 has a first cavity 113, a second cavity 114, a first bearing hole 115 and a second bearing hole 116. The assembly port 111 and the rear port 112 are respectively connected to the first cavity 113, and a side cover 150 is installed at the assembly port 111, and a rear cover 170 is installed at the rear port 112. The first cavity 113 and the second cavity 114 are spaced apart along the axial direction of the rotating shaft 120, the first bearing hole 115 extends axially from the first cavity 113 to the second cavity 114, and the second bearing hole 116 is formed by being concave in the axial direction from the inner side wall of the second cavity 114. After assembly, the transmission member 140 is assembled in the first cavity 113, the forceps lifting device 130 is assembled in the second cavity 114, and the rotating shaft 120 is sequentially penetrated through the transmission member 140, the first bearing hole 115, the forceps lifting device 130 and the second bearing hole 116. The main body 110, the side cover 150, the rear cover 170 and the rotating shaft 120 together enclose a sealed first cavity 113, and the transmission member 140 is rotatably disposed in the first cavity 113. The second cavity 114 is communicated with the outside of the main body 110, and the forceps lifting device 130 is rotatably disposed in the second cavity 114.

[0064] Optionally, the second supporting hole 116 is a circular hole, and the second supporting section 124 is rotatably supported in the second supporting hole 116. In other embodiments, the second supporting hole 116 may also be a semicircular hole, a third of a circular hole or other non-complete circular hole, the second supporting hole 116 is connected to the second cavity 114, and the second supporting section 124 is supported in the second supporting hole 116.

[0065] In some embodiments, see Figure 5 and Figure 6 Two sealing rings 160 are abutted between the outer circumferential wall of the first supporting section 122 and the inner circumferential wall of the first supporting hole 115. The two sealing rings 160 are spaced apart along the axial direction of the rotating shaft 120. The two sealing rings 160 are arranged to seal the rotating shaft 120 and the main body 110, thereby preventing the fluid in the second cavity 114 from entering the first cavity 113 through the space between the rotating shaft 120 and the main body 110, thereby ensuring the sealing of the first cavity 113. It can be understood that in other embodiments of the present application, according to the different lengths of the first supporting section 122, one or three sealing rings 160 may also be arranged outside the first supporting section 122, which is not limited here.

[0066] In some embodiments, see Figure 7 The outer peripheral wall of the first supporting section 122 is concavely provided with two annular grooves 126 arranged at intervals, and the two sealing rings 160 are respectively accommodated and limited in the annular grooves 126.

[0067] In the present application, the shape of the assembly opening 111 can be designed arbitrarily in theory, as long as it satisfies the assembly of the rotating shaft 120. In actual design, in order to achieve sealing and reduce the risk of decontamination, the shape of the assembly opening 111 needs to be optimized.

[0068] As an example, see Figure 4 and Figure 5 The first projection is circular, that is, the inner circumference of the assembly port 111 is a cylindrical surface, and the outer circumference of the side cover 150 is also a cylindrical surface. This arrangement makes it easy to process the inner circumference of the assembly port 111, and the surface is smooth without square corners. It is not easy to cause the sealing effect to decrease due to processing and use, and the risk of disinfection to increase.

[0069] As another example, the first projection is quasi-circular, where quasi-circular refers to a shape similar to a circle but not a regular circle, such as an ellipse. That is, the inner circumference of the assembly port 111 is a quasi-cylindrical surface, and the outer circumference of the side cover 150 is also a quasi-cylindrical surface without square corners, which can also reduce the risk of disinfection. Of course, in other embodiments, the first projection of the assembly port 111 can also be a closed curve, a square or other regular shape, which is not limited here.

[0070] In some embodiments, along the axial direction of the rotating shaft 120, the third projection of the transmission member 140 at least partially extends beyond the first projection of the assembly opening 111. That is, when designing the shape and size of the assembly opening 111, it is only necessary to consider that the first projection of the assembly opening 111 covers the second projection of the rotating shaft 120, and it is not necessary to cover the third projection of the transmission member 140 with the first projection of the assembly opening 111, so that the size of the assembly opening 111 is as small as possible. At this time, the assembly opening 111 is designed to be circular or quasi-circular, which can ensure a good sealing effect and make the surface of the front end portion 100 smooth, reducing the discomfort of insertion.

[0071] Optionally, the transmission member 140 includes a covering portion and an extension portion, wherein the covering portion is the portion of the transmission member 140 covered by the assembly opening 111, and the extension portion is the portion of the transmission member 140 extending outside the assembly opening 111. Along the first direction, the ratio of the first length of the extension portion to the first length of the transmission member 140 is in the range of 1 / 3-2 / 3.

[0072] Specifically, the transmission member 140 includes a sleeve portion 141 sleeved on the rotating shaft 120 and a mounting portion 142 for mounting the wire rope 5. The first direction X1 is a direction perpendicular to the axial direction of the rotating shaft 120, and the first direction X1 is a distribution direction of the sleeve portion 141 and the mounting portion 142.

[0073] In some embodiments, see Figure 5 , along the axial direction of the rotating shaft 120, the first projection area of ​​the assembly opening 111 is smaller than the third projection area of ​​the transmission member 140. Along the axial direction of the rotating shaft 120, the first projection area of ​​the assembly opening 111 is larger than the second projection area of ​​the rotating shaft 120. The first projection area of ​​the assembly opening 111 may be larger than the projection area of ​​the sleeve 141 or smaller than the projection area of ​​the sleeve 141. However, the first projection area of ​​the assembly opening 111 is smaller than the third projection area of ​​the entire transmission member 140, so as to reduce the first projection area of ​​the assembly opening 111 as much as possible while satisfying the assembly of the rotating shaft 120.

[0074] In some embodiments, along the axial direction of the rotating shaft 120 , the third projection of the transmission member 140 at least partially extends beyond the first projection of the assembly opening 111 ; and along the axial direction of the rotating shaft 120 , the first projection area of ​​the assembly opening 111 is smaller than the third projection area of ​​the transmission member 140 .

[0075] In some embodiments, the center line of the assembly opening 111 coincides with the center line of the rotating shaft 120. With this arrangement, when the rotating shaft 120 is disassembled and assembled, the center line of the rotating shaft 120 can be aligned with the center line of the assembly opening 111, and the rotating shaft 120 can be accurately and quickly assembled into the main body 110, thereby improving the assembly efficiency and assembly accuracy of the rotating shaft 120. It can be understood that in other embodiments, the center line of the assembly opening 111 and the center line of the rotating shaft 120 can also be slightly offset, as long as the rotating shaft 120 can be assembled into the main body 110 through the assembly opening 111.

[0076] In some embodiments, see Figure 4 , the center line of the rotating shaft 120 is arranged to cross perpendicularly with the center axis of the main body 110, that is, the center line of the rotating shaft 120 passes through the center point of one of the radial cross sections of the main body 110. In this way, the center line of the assembly port 111 also passes through the center point of one of the radial cross sections of the main body 110, so that the assembly port 111 is symmetrically arranged on the peripheral side of the main body 110, that is, the difficulty of processing the assembly port 111 can be reduced, and the influence of the formation of the assembly port 111 and the assembly of the side cover 150 on the surface regularity of the front end portion 100 can be reduced, and the discomfort of inserting the front end portion 100 can be reduced. Of course, in other embodiments, the center line of the rotating shaft 120 can also deviate from the center axis of the main body 110, which is not limited here.

[0077] In one embodiment, the difference between the minimum inner diameter of the assembly port 111 and the maximum outer diameter of the rotating shaft 120 ranges from 0.12 mm to 0.18 mm. For example, the difference between the minimum inner diameter of the assembly port 111 and the outer diameter of the rotating shaft 120 may be 0.12 mm, 0.125 mm, 0.13 mm, 0.135 mm, 0.14 mm, 0.145 mm, 0.15 mm, 0.155 mm, 0.16 mm, 0.165 mm, 0.17 mm, 0.175 mm or 0.18 mm. In this embodiment, by limiting the difference between the minimum inner diameter of the assembly port 111 and the maximum outer diameter of the rotating shaft 120 within a certain range, the inner diameter of the assembly port 111 can be made as small as possible while allowing the processing errors of the assembly port 111 and the rotating shaft 120, so as to achieve the purpose of reducing the difficulty of decontamination.

[0078] The assembly opening 111 may be a straight cylindrical structure or a variable diameter structure. In addition, the outer diameter of the shaft 120 also changes gradually along the axial direction. Therefore, the difference between the minimum inner diameter of the assembly opening 111 and the maximum outer diameter of the shaft 120 needs to be limited.

[0079] In addition, when the cross section of the assembly opening 111 is not circular, the inner diameter of the assembly opening 111 refers to the first width between two points of the cross section of the assembly opening 111 passing through the center thereof, and when there are different first widths, the smallest first width is selected for calculation. Similarly, when the cross section of the rotating shaft 120 is not circular, the outer diameter of the rotating shaft 120 refers to the second width between two points of the cross section of the rotating shaft 120 passing through the center thereof, and when there are different second widths, the largest second width is selected for calculation.

[0080] In some embodiments, see Figure 5 and Fig. 9 The assembly port 111 includes a large diameter portion 1111 and a small diameter portion 1112 connected in the axial direction, and a step surface 1113 is connected between the large diameter portion 1111 and the small diameter portion 1112; the side cover 150 includes a cover body portion 151 and an extension portion 152 connected in the axial direction, the cover body portion 151 is received in the large diameter portion 1111 and stopped at the step surface 1113, and the extension portion 152 is inserted into the small diameter portion 1112 and is provided with a gap with the rotating shaft 120. The setting of the step surface 1113 can limit the axial position of the side cover 150 to prevent the side cover 150 from falling into the interior of the main body 110 and being unable to be disassembled.

[0081] In some embodiments, the difference between the inner diameter of the small diameter portion 1112 and the maximum outer diameter of the rotating shaft 120 ranges from 0.12 mm to 0.18 mm. For example, the difference between the inner diameter of the small diameter portion 1112 and the outer diameter of the rotating shaft 120 may be 0.12 mm, 0.125 mm, 0.13 mm, 0.135 mm, 0.14 mm, 0.145 mm, 0.15 mm, 0.155 mm, 0.16 mm, 0.165 mm, 0.17 mm, 0.175 mm or 0.18 mm, etc. In this embodiment, by limiting the difference between the inner diameter of the small diameter portion 1112 and the outer diameter of the rotating shaft 120 within a certain range, the inner diameter of the small diameter portion 1112 can be as small as possible under the premise of allowing the processing errors of the small diameter portion 1112 and the rotating shaft 120, so as to achieve the purpose of reducing the difficulty of decontamination.

[0082] In some embodiments, the difference between the inner diameter of the large diameter portion 1111 and the inner diameter of the small diameter portion 1112 is in the range of 0.2 mm to 0.3 mm. For example, the difference between the inner diameter of the large diameter portion 1111 and the inner diameter of the small diameter portion 1112 can be 0.2 mm, 0.21 mm, 0.22 mm, 0.23 mm, 0.24 mm, 0.25 mm, 0.26 mm, 0.27 mm, 0.28 mm, 0.29 mm or 0.3 mm, etc., so that the area of ​​the step surface 1113 is reduced as much as possible, so as to reduce the inner diameter of the large diameter portion 1111 as much as possible, so as to achieve the purpose of reducing the difficulty of decontamination, under the premise that the area of ​​the step surface 1113 is sufficient to support the limiting side cover 150.

[0083] In some embodiments, the inner diameter of the large diameter portion 1111 ranges from 0.32 mm to 0.48 mm, for example, the inner diameter of the large diameter portion 1111 may be 0.32 mm, 0.33 mm, 0.34 mm, 0.35 mm, 0.36 mm, 0.37 mm, 0.38 mm, 0.39 mm, 0.40 mm, 0.41 mm, 0.42 mm, 0.43 mm, 0.44 mm, 0.45 mm, 0.46 mm, 0.47 mm or 0.48 mm. In this embodiment, by limiting the inner diameter of the large diameter portion 1111 to a certain range, on the one hand, the inner diameter of the assembly port 111 can be as small as possible while allowing the machining errors of the assembly port 111 and the rotating shaft 120, so as to achieve the purpose of reducing the difficulty of decontamination.

[0084] In some embodiments, see Fig. 9 The outer circumferential surface of the extension portion 152 includes an anti-mistake plane 1521. In the actual design and manufacturing process, the assembly port 111 is formed on the circumferential surface of the main body 110, and the side cover 150 is assembled on the circumferential surface of the main body 110. Therefore, the structures of the side cover 150 and the assembly port 111 are different along the circumferential direction. The setting of the anti-mistake plane 1521 can avoid the situation that the side cover 150 and the assembly port 111 have inconsistent assembly directions, avoid the situation that the surface of the front end portion 100 is uneven due to incorrect assembly direction, and improve the comfort of the front end portion 100 when inserted into the body cavity.

[0085] In some embodiments, the side cover 150 is received in the assembly opening 111, and the outer peripheral wall of the side cover 150 is bonded to the inner peripheral wall of the assembly opening 111. The side cover 150 is fixed by bonding, which can firmly assemble the side cover 150 on the main body 110 on the one hand, and can also form a seal between the side cover 150 and the main body 110 on the other hand, that is, the transmission member 140 can be sealed and assembled in the first cavity 113, and the sealing ring between the side cover 150 and the main body 110 can be eliminated, so that the outer diameter of the side cover 150 can be further reduced, that is, the inner diameter of the assembly opening 111 can be further reduced, so as to achieve the purpose of reducing the difficulty of decontamination.

[0086] Optionally, the side cover 150 is made of a material with good biocompatibility to ensure the safety of the side cover 150 .

[0087] In some embodiments, see Figure 5 The end surface of the rotating shaft 120 fixedly connected with the transmission member 140 is flush with the end surface of the transmission member 140, that is, the rotating shaft 120 does not protrude relative to the transmission member 140, so that the axial dimension of the rotating shaft 120 is as small as possible. In addition, the rotating shaft 120 and the transmission member 140 can also be axially limited by the inner end surface of the side cover 150 at the same time, so that the axial limiting structure of the rotating shaft 120 and the transmission member 140 can be reduced, the structure of the front end portion 100 is simplified, and the volume is reduced.

[0088] In some embodiments, see Figure 4 The end surface of the rotating shaft 120 facing the assembly opening 111 has a threaded hole 125. Through the arrangement of the threaded hole 125, when the rotating shaft 120 is disassembled, a threaded hole disassembly tool can be inserted into the threaded hole 125 to remove the rotating shaft 120, and the disassembly is convenient.

[0089] In other embodiments of the present application, please refer to Fig.10 Along the axial direction of the rotating shaft 120, the end surface of the rotating shaft 120 fixed with the forceps lifting device 130 is provided with a gap between the main body 110. That is, the rotating shaft 120 is mainly supported by the first supporting section 122 and the main body 110, and the transmission member 140 and the forceps lifting device 130 are respectively provided on opposite sides of the first supporting section 122, thereby improving the rotation balance of the rotating shaft 120.

[0090] In another embodiment of the present application, the assembly opening 111 is a cylindrical surface without a step surface 1113 inside, and the inner diameter of the assembly opening 111 remains unchanged along the axial direction. At this time, it is only necessary to ensure that the difference between the inner diameter of the assembly opening 111 and the outer diameter of the rotating shaft 120 is within the range of 0.12mm-0.18mm.

[0091] Second, see Figure 1 The embodiment of the present application also provides an endoscope, including 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, and the insertion portion 1 is used to extend into the patient's body. The operator controls the insertion portion 1 to work in the patient's body through the operating portion 2.

[0092] The insertion portion 1 includes the front end portion 100, the bending portion 200 and the flexible portion 300, which are connected in sequence, and the flexible portion 300 is connected to the operation portion 2. Figure 3 and Figure 4 The insertion portion 1 further includes an ultrasonic probe 400, which is used for real-time ultrasonic imaging scanning to obtain ultrasonic images of different internal tissues of the human body, thereby assisting medical diagnosis. The ultrasonic probe 400 is connected to the ultrasonic host through an ultrasonic cable 4. Of course, in other embodiments, the endoscope may not include the ultrasonic probe 400, such as a duodenoscope.

[0093] 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.

[0094] In a third aspect, the embodiment of the present application further provides an endoscope system, including an image processing device, a light source device, and an endoscope. An imaging component and a light source component are provided in the endoscope, 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 lesions in the human body, the image processing device is connected in communication with the imaging component in the endoscope, the image processing device is used to receive optical image information transmitted by the imaging component and process the optical image information, the display device is connected in communication with the image processing device, and the display device is used to display the processed optical image for the doctor to observe and assist the operation.

[0095] 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. The front end portion (100) of the endoscope, It is characterized in that include: A main body (110), wherein a peripheral side surface of the main body (110) is provided with an assembly opening (111), and a side cover (150) is installed at the assembly opening (111); A rotating shaft (120) rotatably disposed in the main body (110); A clamp lifting device (130) fixedly connected to the rotating shaft (120); A transmission member (140) fixedly connected to the rotating shaft (120); The first supporting section (122) of the rotating shaft (120) is rotatably supported on the main body (110), and the first supporting section (122) is located between the lifting clamp (130) and the transmission member (140) along the axial direction of the rotating shaft (120); along the axial direction of the rotating shaft (120), one end of the rotating shaft (120) fixedly connected with the transmission member (140) is provided with a gap with the side cover (150); Along the axial direction of the rotating shaft (120), the first projection of the assembly opening (111) covers the second projection of the rotating shaft (120), and the rear end surface of the main body (110) has a rear port (112) for disassembling and assembling the transmission member (140).

2. The front end portion (100) of the endoscope according to claim 1, It is characterized in that The rotating shaft (120) includes a first connecting section (121), a first supporting section (122) and a second connecting section (123) which are connected in sequence along its axial direction; the transmission member (140) is fixedly connected to the first connecting section (121); the forceps lifting device (130) is fixedly connected to the second connecting section (123); and the first supporting section (122) is rotatably supported by the main body (110).

3. The front end portion (100) of the endoscope according to claim 2, It is characterized in that The rotating shaft (120) further comprises a second supporting section (124), wherein the second supporting section (124) is connected to an end of the second connecting section (123) which is away from the first supporting section (122), and the second supporting section (124) is rotatably supported by the main body (110).

4. The front end portion (100) of the endoscope according to claim 1, It is characterized in that Along the axial direction of the rotating shaft (120), one end of the rotating shaft (120) to which the forceps lifting device (130) is fixedly connected is spaced apart from the main body (110).

5. The front end portion (100) of the endoscope according to any one of claims 1 to 4, It is characterized in that Along the axial direction of the rotating shaft (120), a third projection of the transmission member (140) at least partially extends beyond the first projection of the assembly opening (111); And / or, along the axial direction of the rotating shaft (120), a first projection area of ​​the assembly opening (111) is smaller than a third projection area of ​​the transmission member (140).

6. The front end portion (100) of the endoscope according to any one of claims 1 to 4, It is characterized in that The first projection is circular or quasi-circular.

7. The front end portion (100) of the endoscope according to any one of claims 1 to 4, It is characterized in that The center line of the assembly opening (111) coincides with the center line of the rotating shaft (120).

8. The front end portion (100) of the endoscope according to any one of claims 1 to 4, It is characterized in that The difference between the minimum inner diameter of the assembly opening (111) and the maximum outer diameter of the rotating shaft (120) is in the range of 0.12 mm to 0.18 mm.

9. The front end portion (100) of the endoscope according to any one of claims 1 to 4, It is characterized in that The assembly port (111) includes a large diameter portion (1111) and a small diameter portion (1112) connected in the axial direction, and a step surface (1113) is connected between the large diameter portion (1111) and the small diameter portion (1112); the side cover (150) includes a cover body portion (151) and an extension portion (152) connected in the axial direction, the cover body portion (151) is received in the large diameter portion (1111) and stopped at the step surface (1113), and the extension portion (152) is inserted into the small diameter portion (1112) and is provided with a gap with the rotating shaft (120).

10. The front end portion (100) of the endoscope according to claim 9, It is characterized in that The difference between the inner diameter of the small diameter portion (1112) and the maximum outer diameter of the rotating shaft (120) is in the range of 0.12 mm to 0.18 mm.

11. The front end portion (100) of the endoscope according to claim 9, It is characterized in that The difference between the inner diameter of the large diameter portion (1111) and the inner diameter of the small diameter portion (1112) is in the range of 0.2 mm to 0.3 mm.

12. The front end portion (100) of the endoscope according to claim 9, It is characterized in that The outer peripheral surface of the extension portion (152) includes an anti-foolproof plane (1521).

13. The front end portion (100) of the endoscope according to any one of claims 1 to 4, It is characterized in that The side cover (150) is received in the assembly opening (111), and the outer peripheral wall of the side cover (150) is bonded to the inner peripheral wall of the assembly opening (111).

14. The front end portion (100) of the endoscope according to any one of claims 1 to 4, It is characterized in that The end surface of the rotating shaft (120) fixedly connected to the transmission member (140) is flush with the end surface of the transmission member (140).

15. The front end portion (100) of the endoscope according to claim 2 or 3, It is characterized in that The forceps lifting device (130) comprises a rotating part (131) and a lifting part (132), wherein the rotating part (131) is fixedly connected to the second connecting section (123), and the lifting part (132) is connected to the rotating part (131); Along the axial direction of the rotating shaft (120), the first center plane of the rotating portion (131) deviates from the second center plane of the lifting portion (132), and the first width of the rotating portion (131) is less than half of the second width of the lifting portion (132).

16. Endoscope, It is characterized in that The endoscope comprises a connecting portion (3), an operating portion (2), and an insertion portion (1), wherein the insertion portion (1) comprises a front end portion (100) of the endoscope according to any one of claims 1 to 15.

17. Endoscopic system, It is characterized in that It comprises an image processing device, a light source device and the endoscope as claimed in claim 16.

Images