An angle rotation mechanism for a digestive endoscope

Abstract

The present invention discloses an angle rotation mechanism for a digestive endoscope, belonging to the technical field of digestive endoscopes. It includes a grip, one side of the grip is fixedly connected with a connecting pipe, a catheter is installed under the grip, a rotating device for dead-angle rotation is installed in the catheter, an endoscope body is fixedly connected under the rotating device, and a protection device for preventing accidental touch is connected to one side of the grip; in the present invention, if reverse rotation is required, the operator only needs to release the upper control button and press the lower control button, then the motor can be reversed, thereby driving the entire structure to rotate in the opposite direction, and the endoscope body gradually returns to the initial position. The optimization of this structural design enables the operator to more easily and freely control the dead-angle rotation of the endoscope body, thereby achieving high-precision diagnostic and therapeutic operations in a complex digestive tract environment, effectively reducing the operation difficulty and improving the accuracy of the examination.

Description

Technical Field

[0001] The present invention belongs to the technical field of digestive endoscopes, and particularly relates to an angle rotation mechanism of a digestive endoscope. Background Art

[0002] A digestive endoscope is a medical device specifically used for digestive tract examination and treatment, and is widely used to observe the internal conditions of parts such as the esophagus, stomach, small intestine, and large intestine. Its front end is equipped with a high-definition camera and a powerful light source, which can capture images inside the digestive tract in real time and transmit them to a display screen, enabling doctors to clearly identify the location, nature, and size of lesions. In addition, the digestive endoscope is also provided with multiple surgical tool channels to support various minimally invasive operations such as tissue resection, hemostasis, and biopsy. This design not only improves the accuracy of diagnosis but also enables doctors to perform multiple treatments in one procedure, significantly reducing the pain and recovery time of patients. With the development of technology, modern digestive endoscopes have also incorporated new technologies such as endoscopic ultrasound and electronic endoscopes, further improving the accuracy and safety of examination and treatment.

[0003] Currently, most digestive endoscopes adopt a swinging structure to adjust the viewing angle, allowing the endoscope head to swing up, down, left, and right within a certain range to observe lesions in the digestive tract. However, when a full range of observation is required, the swinging range is limited, and the operator often needs to manually rotate the catheter to expand the viewing angle. This operation requires skilled skills and high stability to avoid missing key details, but frequent manual adjustment will increase the burden on doctors and affect the examination efficiency. Therefore, the focus of endoscopic technology improvement lies in achieving more convenient full-range viewing angle adjustment to reduce the operator's operation burden while maintaining image quality.

[0004] Based on this, the present invention designs an angle rotation mechanism of a digestive endoscope to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to propose an angle rotation mechanism of a digestive endoscope to solve the problem that when a full range of observation is required, the swinging range is limited, and the operator often needs to manually rotate the catheter to expand the viewing angle. This operation requires skilled skills and high stability to avoid missing key details, but frequent manual adjustment will increase the burden on doctors and affect the examination efficiency.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] An angle rotation mechanism for a digestive endoscope, including a grip, one side of the grip is fixedly connected with a connecting tube, a catheter is installed under the grip, a rotating device for omnidirectional rotation is installed in the catheter, an endoscope body is fixedly connected under the rotating device, a protection device for preventing accidental touch is connected to one side of the grip, a damping device for increasing the resistance of the rotating device is connected outside the rotating device, and an inflation device for expanding the inspection area is sleeved outside the catheter;

[0008] The rotating device includes two control buttons, the control buttons are connected through the grip, the same wire is connected in both control buttons, one end of the wire is fixedly connected with an electric motor, the output end of the electric motor is fixedly connected with a rotating shaft, an installation plate is rotatably connected outside the rotating shaft, the installation plate is welded in the catheter, a fixing block is connected under the installation plate, a frame body is fixedly connected outside the fixing block, the rotating shaft is rotatably connected in the fixing block, a rotating plate is fixedly connected under the rotating shaft, a rotating rod is fixedly connected under the rotating plate, a movable plate is hinged outside the rotating rod through a pin shaft, the movable plate is hinged in the frame body through a pin shaft, a sphere is fixedly connected under the rotating rod, and the sphere is rotatably connected in the catheter.

[0009] As a further description of the above technical solution:

[0010] Half of the area of the sphere is arranged outside the catheter, and the sphere is made of rubber material with sealing performance.

[0011] As a further description of the above technical solution:

[0012] The endoscope body is fixedly connected outside the sphere, and a signal line for conducting electricity is fixedly connected inside the endoscope body.

[0013] As a further description of the above technical solution:

[0014] Two vertical plates are symmetrically arranged under the electric motor, and the vertical plates are connected to the installation plate.

[0015] As a further description of the above technical solution:

[0016] The protection device includes a protection shell, the protection shell is fixedly connected outside the grip, a partition for dividing the area is connected inside the protection shell, and the two control buttons are respectively arranged in two areas inside the protection shell.

[0017] As a further description of the above technical solution:

[0018] The damping device includes two connecting plates, the connecting plates are connected to the installation plate, an expansion rod is fixedly connected to the opposite surfaces of the two connecting plates, one end of the expansion rod is connected with an arc-shaped plate, and a pulling-back spring is sleeved outside the expansion rod.

[0019] As a further description of the above technical solution:

[0020] One end of the retraction spring is connected inside the arc plate, and the other end of the retraction spring is connected inside the connection plate.

[0021] As a further description of the above technical solution:

[0022] The inflation device includes a two-way air pump and a collar. The two-way air pump is connected inside the grip. Two air pump buttons are connected to the outside of the two-way air pump. The air pump buttons penetrate and are connected inside the grip. The collar is sleeved outside the catheter. Two annular airbags are penetrated and connected inside the collar. The same circular ring is connected below the two annular airbags. A through hole is provided inside the collar.

[0023] As a further description of the above technical solution:

[0024] An opening is provided outside the catheter, and the collar is sleeved at the opening. A cavity for injecting air into the annular airbag is provided inside the collar.

[0025] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0026] 1. In the present invention, when angle adjustment is required, after the operator presses the upper control button, the electric motor is started, driving the rotating shaft to rotate clockwise or counterclockwise. The rotational force of the rotating shaft is transmitted to the rotating plate, causing the rotating plate to rotate synchronously with it. This linkage further drives the rotating rod to rotate. The rotating rod rotates flexibly within a certain range through the pin shaft inside the movable plate, and at the same time drives the movable plate to swing inside the frame body through the pin shaft. During this layer-by-layer transmission process, the rotating rod gradually drives the sphere to rotate inside the catheter, so that the angle of the endoscope body is adjusted accordingly, so that the operator can observe the tissue structures in all directions of the digestive tract more clearly, thereby greatly enhancing the overall view of the endoscope body; if reverse rotation is required, the operator only needs to release the upper control button and press the lower control button to reverse the motor, thereby driving the entire structure to rotate in the opposite direction, and gradually restoring the endoscope body to the initial position. The optimization of this structural design enables the operator to control the rotation of the endoscope body more easily and freely, so as to achieve high-precision diagnosis and treatment operations in a complex digestive tract environment, effectively reducing the operation difficulty and improving the accuracy of the examination.

[0027] 2. In the present invention, in a relatively narrow inspection space, such as a contracted gastric cavity, the steering adjustment of the endoscope body may be limited, which affects the operation space and angle adjustment to a certain extent. In this case, the operator can start the two-way air pump by pressing the air pump button on the device. At this time, the two-way air pump smoothly delivers gas into the catheter and gradually injects it into the annular airbag through the preset through holes. As the annular airbag inflates and expands, the originally narrow inspection area will gradually be expanded by the annular airbag, thereby creating a more spacious space for the multi-angle rotation of the endoscope body, greatly improving the flexibility and controllability of the operation. After the inspection is completed, the operator only needs to press another air pump button to trigger the reverse action of the two-way air pump, so that the gas in the annular airbag is quickly pumped out, and the annular airbag returns to its original state. This design not only facilitates the endoscope body to penetrate into more complex areas during inflation, further expanding the observation perspective, but also significantly improves the convenience and safety when the endoscope body is withdrawn from the catheter. In addition, the sealing performance of the annular airbag structure during release and inflation can ensure that the gas only acts on the required area, avoiding interference with surrounding tissues, thus effectively guaranteeing the efficiency, safety and accuracy of the entire operation process. This flexible inflation and exhaust mechanism enables the endoscope body to flexibly respond in various complex narrow environments, greatly improving the doctor's operation experience and the accuracy of the inspection.

[0028] 3. In the present invention, during the rotation process, the designed pulling-back spring applies a continuous elastic force to the arc-shaped plate, causing a frictional effect when the arc-shaped plate rotates around the rotating shaft. This frictional force can provide appropriate resistance to the rotating shaft, forming a damping effect, preventing the endoscope body from getting out of control due to too fast rotation, and at the same time effectively improving the operation stability and ensuring the smoothness and safety of the observation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a three-dimensional structural schematic diagram of an angle rotation mechanism of a digestive endoscope proposed by the present invention;

[0030] Figure 2 is a three-dimensional structural schematic diagram of a grip of an angle rotation mechanism of a digestive endoscope proposed by the present invention;

[0031] Figure 3 is a three-dimensional structural schematic diagram of a rotating device of an angle rotation mechanism of a digestive endoscope proposed by the present invention;

[0032] Figure 4 is an angle rotation mechanism of a digestive endoscope proposed by the present invention Figure 3 is an enlarged structural schematic diagram of part A in;

[0033] Figure 5 is a three-dimensional structural schematic diagram of a damping device of an angle rotation mechanism of a digestive endoscope proposed by the present invention;

[0034] Figure 6 This is a three-dimensional structural schematic diagram of an air inflation device for the angle rotation mechanism of a digestive endoscope proposed by the present invention;

[0035] Figure 7 This is a three-dimensional structural schematic diagram of an annular airbag for the angle rotation mechanism of a digestive endoscope proposed by the present invention;

[0036] Figure 8 This is an angle rotation mechanism of a digestive endoscope proposed by the present invention Figure 7 The enlarged structural schematic diagram of part B in;

[0037] Legend description:

[0038] 1. Grip; 2. Connecting pipe; 3. Duct; 4. Rotating device; 401. Control button; 402. Wire; 403. Electric motor; 404. Rotating shaft; 405. Mounting plate; 406. Fixed block; 407. Frame; 408. Rotating plate; 409. Rotating rod; 410. Movable plate; 411. Sphere; 5. Endoscope body; 6. Protection device; 61. Protection shell; 62. Partition; 7. Damping device; 71. Connecting plate; 72. Telescopic rod; 73. Arc plate; 74. Pull-back spring; 8. Air inflation device; 81. Two-way air pump; 82. Air pump button; 83. Collar; 84. Through hole; 85. Annular airbag; 86. Ring. Specific embodiments

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the protection scope of the present invention.

[0040] Please refer to Figures 1-8 , the present invention provides a technical solution: an angle rotation mechanism of a digestive endoscope, including a grip 1, a connecting pipe 2 is fixedly connected to one side of the grip 1, a duct 3 is installed under the grip 1, a rotating device 4 for omnidirectional rotation is installed in the duct 3, an endoscope body 5 is fixedly connected under the rotating device 4, a protection device 6 for preventing accidental touch is connected to one side of the grip 1, a damping device 7 for increasing the resistance to the rotating device 4 is connected outside the rotating device 4, and an air inflation device 8 for expanding the inspection area is sleeved outside the duct 3.

[0041] The all-round rotation device 4 adopts a multi-axis structure design, enabling the endoscope body 5 to rotate flexibly at multiple angles, providing a more comprehensive and detailed observation perspective for digestive tract lesions. This design allows the operator to quickly adjust the angle of the endoscope body 5 in a complex anatomical environment, ensuring comprehensive coverage and accurate observation during the examination. The protective device 6 effectively prevents accidental touches, enabling doctors to focus on observation and treatment during operation without being affected by irrelevant interferences, significantly enhancing the safety of operating the endoscope body 5 and reducing potential risks to patients and medical staff. In addition, the damping device 7 provides appropriate resistance when the endoscope body 5 rotates, adding a sense of touch and precise control during operation. When the operator rotates the endoscope body 5, they can more steadily fine-tune the direction to ensure accuracy and stability. Thanks to these optimized designs, doctors can observe and operate more confidently in the face of complex anatomical structures, further improving the quality and safety of the diagnosis and treatment process.

[0042] Specifically, as Figures 2-3 shown, the rotation device 4 includes two control buttons 401. The control buttons 401 are connected through the grip 1. The same wire 402 is connected inside both control buttons 401. One end of the wire 402 is fixedly connected to an electric motor 403. The output end of the electric motor 403 is fixedly connected to a rotating shaft 404. An installation plate 405 is rotatably connected to the outside of the rotating shaft 404. The installation plate 405 is welded inside the catheter 3. A fixed block 406 is connected below the installation plate 405. A frame 407 is fixedly connected to the outside of the fixed block 406. The rotating shaft 404 is rotatably connected inside the fixed block 406. A rotating plate 408 is fixedly connected below the rotating shaft 404. A rotating rod 409 is fixedly connected below the rotating plate 408. A movable plate 410 is hinged to the outside of the rotating rod 409 through a pin shaft. The movable plate 410 is hinged inside the frame 407 through a pin shaft. A sphere 411 is fixedly connected below the rotating rod 409. The sphere 411 is rotatably connected inside the catheter 3. Half of the area of the sphere 411 is outside the catheter 3, and the sphere 411 is made of a rubber material with sealing properties. The endoscope body 5 is fixedly connected to the outside of the sphere 411. A signal wire for conducting electricity is fixedly connected inside the endoscope body 5. Two vertical plates are symmetrically arranged below the electric motor 403, and the vertical plates are connected to the installation plate 405.

[0043] The sealing design of the sphere 411 effectively prevents gas leakage and ensures safety during the operation of the endoscope body 5. The selection of its rubber material not only has a good sealing effect but also can adapt to the shape and environmental changes in the digestive tract, helping to reduce friction and potential damage to the surrounding tissues, thereby improving the safety of the examination and the comfort of the patient. In addition, the hinge structure between the movable plate 410 and the rotating rod 409 enables the endoscope body 5 to rotate flexibly among multiple angles, achieving a more comprehensive observation of the lesion site. This flexible design further enhances the accuracy of the operation, provides a more convenient perspective control for the doctor, and makes the examination process more efficient and reliable.

[0044] Specifically, as Figure 2 shown, the protection device 6 includes a protective shell 61, which is fixedly connected to the outside of the grip 1. A partition 62 for dividing areas is connected inside the protective shell 61, and the two control buttons 401 are respectively arranged in the two areas inside the protective shell 61.

[0045] The design of the protective shell 61 provides an independent and safe environment for the operation, ensuring the effective isolation of the operation area from the hand, reducing interference and the risk of accidental touch during the operation. This structure allows the operator to focus more on the control of the endoscope body 5, thereby improving the safety and accuracy of the operation. At the same time, the partition 62 separates different operation areas, enabling the operator to avoid accidentally touching non-target control buttons 401 when performing different operations. This design effectively prevents the deviation of the viewing angle due to accidental touch during the observation process, helps to reduce the operation burden of the operator, makes the whole process more smooth, and thus improves the overall efficiency and accuracy of the examination of the endoscope body 5.

[0046] Specifically, as Figure 5 shown, the damping device 7 includes two connecting plates 71, which are connected to the mounting plate 405. Opposite surfaces of the two connecting plates 71 are fixedly connected with telescopic rods 72. One end of the telescopic rod 72 is connected with an arc-shaped plate 73, and a pulling-back spring 74 is sleeved outside the telescopic rod 72. One end of the pulling-back spring 74 is connected inside the arc-shaped plate 73, and the other end of the pulling-back spring 74 is connected inside the connecting plate 71.

[0047] The damping device 7 cooperates with the telescopic rod 72 and the return spring 74 so that the return spring 74 applies continuous elastic force to the arc plate 73, thereby ensuring that the arc plate 73 always applies moderate friction to the rotating shaft 404. This design provides appropriate resistance for the rotation of the endoscope body 5, so that the operator can feel more stable when rotating the endoscope body 5, avoiding excessive rotation or loss of control of the endoscope body 5 due to excessive operation. The structure of the arc plate 73 further optimizes the distribution of force, evenly disperses the force on the rotating shaft 404, and prevents excessive concentration of local stress, thereby improving the overall durability of the equipment and extending its service life. In addition, the arc plate 73 effectively buffers speed changes during rotation, avoiding the risk of tissue damage caused by rapid rotation. This smooth and controllable rotation method not only protects the patient's tissue structure, but also significantly improves the safety and comfort of operating the endoscope body 5, making the entire inspection process smoother and safer.

[0048] Specifically, Figures 6-8 As shown, the inflation device 8 includes a two-way air pump 81 and a ring 83. The two-way air pump 81 is connected inside the handle 1. Two air pump buttons 82 are connected outside the two-way air pump 81. The air pump button 82 is connected through the handle 1. The ring 83 is sleeved outside the catheter 3. Two annular air bags 85 are connected through the ring 83. The two annular air bags 85 are connected to the same circular ring 86. A through hole 84 is provided in the ring 83. An opening is provided outside the catheter 3, and the ring 83 is sleeved at the opening. A cavity is provided in the ring 83 for injecting air into the annular air bags 85.

[0049] The efficient design of the two-way air pump 81 ensures that the gas injection and extraction process is rapid, reducing the operation time, which is particularly important in emergency situations and helps to quickly adjust the observation range of the endoscope body 5. The two-way air pump 81 can be started by pressing the air pump button 82. If it is released, it can be stopped, which is convenient to operate. The structural optimization of the ring 83 reduces the air flow resistance, improves the efficiency of inflation and exhaust, and makes the entire inflation device 8 work more smoothly. Due to the special shape design of the annular airbag 85, energy consumption is also reduced, making the inflation efficiency higher. The two-way air pump 81 of the inflation device 8 can flexibly and quickly adjust the inflation state of the annular airbag 85, thereby effectively expanding the inspection area. This flexible inflation function enables the operator to quickly adapt to various anatomical environments and improves the efficiency and accuracy of the inspection. The design of the annular airbag 85 can effectively open the narrow area during the expansion process, and the gap design in the annular airbag 85 is reasonable to ensure that it will not affect the normal operation of the surrounding organs. This design not only optimizes the inspection environment, but also reduces the pressure and potential damage to the tissue, ensuring the safety and effectiveness of the entire inspection process.

[0050] Working principle, during use: When the need arises to adjust the angle of the digestive endoscope body 5, the operator can activate the electric motor 403 by pressing the upper control button 401. The rotation of the electric motor 403 directly drives the rotation of the rotating shaft 404. The movement of the rotating shaft 404 causes the rotating plate 408 to rotate synchronously. The rotating plate 408 is connected to a rotating rod 409, and the rotating rod 409 is connected to the movable plate 410 through a pin shaft. This design ensures that the rotation of the rotating rod 409 can be effectively transmitted to the movable plate 410, causing it to shake correspondingly within the frame 407. During the rotation of the rotating rod 409, the sphere 411 rotates within the catheter 3, thereby driving the endoscope body 5 to rotate. If the angle needs to be adjusted in the reverse direction, the operator only needs to release the upper control button 401 and then press the lower control button 401, and the electric motor 403 will quickly reverse. This two-way control design provides great flexibility, enabling the operator to adjust the angle of the endoscope body 5 at any time according to the inspection requirements. During the rotation process, the return spring 74 exerts an elastic force on the arc-shaped plate 73, causing the arc-shaped plate 73 to move synchronously. The two arc-shaped plates 73 then exert a frictional force on the rotating shaft 404. This frictional force slows down the rotation speed of the rotating shaft 404, achieving a damping effect and effectively preventing operation errors caused by too fast rotation. This design provides better control ability during detailed inspections, especially when observing narrow areas, enabling the operator to more precisely adjust the position of the endoscope body 5. When inspecting in a relatively narrow space, such as a contracted gastric cavity, the steering adjustment of the endoscope body 5 may be restricted to a certain extent. To improve this, the operator can press the air pump button 82 on the device to activate the two-way air pump 81. At this time, the two-way air pump 81 delivers gas to the catheter 3 and injects it into the annular airbag 85 through the through hole 84. After inflation, the annular airbag 85 expands the surrounding narrow area, increasing the operating space for the endoscope body 5. The implementation of this process allows the operator to smoothly adjust the angle of the endoscope body 5 in a restricted environment, avoiding operation obstacles caused by insufficient space. When the inspection is completed, the operator only needs to press another air pump button 82, and the two-way air pump 81 will extract the gas from the annular airbag 85, causing the annular airbag 85 to return to its initial state. This design ensures that the endoscope body 5 can quickly return to its original state after the inspection, facilitating the continuation of the next operation or the smooth withdrawal of the catheter 3. Thus, the adjustment process of the endoscope body 5 is completed.

[0051] As described above, it is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, making equivalent substitutions or changes, should be covered within the protection scope of the present invention.

Claims

1. An angle rotation mechanism for a digestive endoscope, comprising a handle (1), characterized in that: A connecting tube (2) is fixedly connected to one side of the handle (1), a catheter (3) is installed under the handle (1), a rotating device (4) for performing rotation without blind spots is installed inside the catheter (3), an endoscope body (5) is fixedly connected under the rotating device (4), a protective device (6) for preventing accidental touch is connected to one side of the handle (1), a damping device (7) for increasing resistance to the rotating device (4) is connected to the outside of the rotating device (4), and an inflation device (8) for expanding the inspection area is provided on the outer shell of the catheter (3); The rotating device (4) comprises two control buttons (401), the control buttons (401) are connected through the handle (1), the two control buttons (401) are connected to the same wire (402), one end of the wire (402) is fixedly connected to an electric motor (403), the output end of the electric motor (403) is fixedly connected to a rotating shaft (404), the rotating shaft (404) is rotatably connected to a mounting plate (405), the mounting plate (405) is welded in the conduit (3), and a fixing block (405) is connected below the mounting plate (405). 06), the fixed block (406) is fixedly connected to a frame (407) outside, the rotating shaft (404) is rotatably connected inside the fixed block (406), a rotating plate (408) is fixedly connected below the rotating shaft (404), a rotating rod (409) is fixedly connected below the rotating plate (408), a movable plate (410) is hinged to the outside of the rotating rod (409) via a pin, the movable plate (410) is hinged to the frame (407) via a pin, a ball (411) is fixedly connected below the rotating rod (409), and the ball (411) is rotatably connected inside the catheter (3).

2. The angle rotation mechanism of a digestive endoscope according to claim 1, characterized in that: A half area of ​​the spherical body (411) is arranged outside the catheter (3), and the spherical body (411) is made of a rubber material having sealing properties.

3. The angle rotation mechanism of a digestive endoscope according to claim 1, characterized in that: The endoscope body (5) is fixedly connected to the outside of the sphere (411), and a signal line for conducting electricity is fixedly connected inside the endoscope body (5).

4. The angle rotation mechanism of a digestive endoscope according to claim 1, characterized in that: Two vertical plates are symmetrically arranged below the electric motor (403), and the vertical plates are connected to the mounting plate (405).

5. The angle rotation mechanism of a digestive endoscope according to claim 1, characterized in that: The protective device (6) comprises a protective shell (61), the protective shell (61) being fixedly connected to the outside of the handle (1), a partition (62) for dividing areas being connected inside the protective shell (61), and the two control buttons (401) being respectively arranged in two areas inside the protective shell (61).

6. The angle rotation mechanism of a digestive endoscope according to claim 1, characterized in that: The damping device (7) comprises two connecting plates (71), the connecting plates (71) being connected to the mounting plate (405), the opposite surfaces of the two connecting plates (71) being fixedly connected to telescopic rods (72), one end of the telescopic rods (72) being connected to an arc-shaped plate (73), and the outer sleeve of the telescopic rods (72) being provided with a pull-back spring (74).

7. The angle rotation mechanism of a digestive endoscope according to claim 6, characterized in that: One end of the return spring (74) is connected to the arc-shaped plate (73), and the other end of the return spring (74) is connected to the connecting plate (71).

8. The angle rotation mechanism of a digestive endoscope according to claim 1, characterized in that: The inflation device (8) comprises a two-way air pump (81) and a collar (83). The two-way air pump (81) is connected inside the handle (1). Two air pump buttons (82) are connected outside the two-way air pump (81). The air pump buttons (82) are connected through the handle (1). The collar (83) is sleeved outside the catheter (3). Two annular air bags (85) are connected through the collar (83). The two annular air bags (85) are connected below the same circular ring (86). A through hole (84) is provided inside the collar (83).

9. The angle rotation mechanism of a digestive endoscope according to claim 8, characterized in that: The catheter (3) is provided with an opening on the outside, and the collar (83) is sleeved on the opening. The collar (83) is provided with a cavity inside for facilitating the injection of gas into the annular airbag (85).

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