Insertion portion and endoscope
By designing a deflectable insertion section and a negative pressure suction valve, the problem of limited endoscopic suction channel area was solved, enabling greater flow and insertion of larger instruments, thus improving the diagnostic and treatment efficiency of endoscopy.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- HUNAN VATHIN MEDICAL INSTR CO LTD
- Filing Date
- 2026-01-13
- Publication Date
- 2026-07-30
AI Technical Summary
The limited cross-sectional area of the endoscope's suction channel restricts the flow rate and the passage of larger diameter medical devices, affecting the efficiency of diagnostic and treatment procedures.
An insertion section is designed, including an insertion tube, a front end assembly, and a drive mechanism. By driving the front end assembly to deflect, the area of the opening in the axial direction of the insertion section is increased. Combined with a negative pressure suction valve and a transmission mechanism, flexible control of the opening and increased flow rate are achieved.
It improves the suction flow rate of the endoscope and the ability to insert large-volume medical devices, enhancing the flexibility and efficiency of diagnostic and treatment procedures.
Smart Images
Figure CN2026072150_30072026_PF_FP_ABST
Abstract
Description
An insertion part and an endoscope Technical Field
[0001] This application relates to the field of medical devices, and more particularly to an insertion device and an endoscope. Background Technology
[0002] Endoscopes are used for direct observation and diagnosis of the condition of internal tissues and organs. During disease treatment, medical staff often need to use the suction channel of the endoscope to aspirate sputum, blood clots, and other substances to perform diagnostic and treatment procedures. To facilitate smooth insertion of the endoscope into the body, its size should not be too large.
[0003] In addition, a camera module is integrated at the distal end of the endoscope's insertion section. This camera module provides visual images to facilitate diagnosis and treatment by medical personnel. However, this also significantly reduces the cross-sectional area of the endoscope's suction channel. This greatly limits the flow rate of the endoscope's suction channel and also limits the possibility of successfully inserting larger diameter medical instruments through the endoscope's instrument tube. Summary of the Invention
[0004] In view of the shortcomings of the above-mentioned related technologies, this application provides an insertion part and an endoscope to solve the above-mentioned technical problems.
[0005] This application provides an insertion part for an endoscope. The insertion part includes an insertion tube, a front end assembly, and a first driving mechanism. The insertion tube has a first channel extending from the proximal end to the distal end of the insertion tube. The front end assembly has a device mounting part, a second channel penetrating the front end assembly, and an opening disposed on the distal sidewall of the second channel. The device mounting part partially obstructs the first channel. The second channel communicates with the first channel. The opening is located on the side of the second channel away from the device mounting part, and the bottom of the opening extends to the proximal end of the device mounting part. The front end assembly is rotatably engaged with the distal end of the insertion tube. The first driving mechanism is connected to the front end assembly and is used to drive the front end assembly to deflect toward a first side of the insertion tube, which is the side of the insertion tube away from the opening.
[0006] To achieve the above and other related objectives, this application provides an endoscope, including an insertion portion as described above and a negative pressure suction valve, the negative pressure suction valve being connected to a first channel.
[0007] The technical solution adopted in this application achieves the following beneficial effects: The device mounting section can be used to mount devices such as cameras and lighting lamps. The insertion section can be inserted into the patient's body up to the affected area. In the insertion section, the first channel and the second channel can perform suction or insert medical devices. During this process, the drive mechanism can drive the device mounting section to deflect, thereby increasing the area of the opening in the axial direction of the insertion section. This configuration increases the area at the opening, reduces the impact of the device mounting section and the camera module mounted on it on the cross-sectional area of the first channel, increases the flow rate of the insertion section, and improves the effectiveness and efficiency of the insertion section. In addition, the first channel can insert larger medical devices, improving the adaptability of the insertion section and expanding its application scenarios. Attached Figure Description
[0008] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0009] Figure 1 is a schematic diagram of the structure of an endoscope shown in an exemplary embodiment of this application;
[0010] Figure 2 is a schematic diagram of the structure of the insertion part shown in an exemplary embodiment of this application;
[0011] Figure 3 is a cross-sectional view of the insertion portion shown in an exemplary embodiment of this application;
[0012] Figure 4 is a cross-sectional view of another insertion portion shown in an exemplary embodiment of this application;
[0013] Figure 5 is a cross-sectional view of another insertion portion shown in an exemplary embodiment of this application;
[0014] Figure 6 is a cross-sectional view of yet another insertion portion shown in an exemplary embodiment of this application;
[0015] Figure 7 is a cross-sectional view of the insertion portion after rotation, as shown in an exemplary embodiment of this application;
[0016] Figure 8 is a schematic diagram of the active bending segment and front-end component shown in an exemplary embodiment of this application;
[0017] Figure 9 is a schematic diagram of the insertion part from another perspective, illustrating an exemplary embodiment of this application;
[0018] Figure 10 is a schematic diagram of the structure of the first rotating section, the second rotating section, and the front end assembly shown in an exemplary embodiment of this application;
[0019] Figure 11 is a schematic diagram of another first rotating section, second rotating section, and front end assembly, illustrating an exemplary embodiment of this application;
[0020] Figure 12 is a schematic diagram illustrating the structure of a first rotating section, a second rotating section, and a front end assembly in another exemplary embodiment of this application;
[0021] Figure 13 is a schematic diagram of the structure of another endoscope shown in an exemplary embodiment of this application;
[0022] Figure 14 is an enlarged view of point a in Figure 13.
[0023] In the diagram: 1. Endoscope; 100. Insertion section; 110. Insertion tube; 111. First channel; 120. Front end assembly; 121. Device mounting section; 122. Second channel; 123. Opening; 124. Front end seat; 125. Camera module; 130. First drive mechanism; 131. Locking section; 140. Second drive mechanism; 150. Active bending section; 151. First rotating joint; 152. Second rotating joint; 153. First arc-shaped groove; 154. Second arc-shaped groove; 155. First arc-shaped slit; 160. First side; 170. Second side; 180. Third side; 200. Negative pressure suction valve; 210. Transmission component; 300. Traction rope; 400. Traction wheel; 500. Operating section. Detailed Implementation
[0024] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0025] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. The words "and / or" in the specification and claims indicate at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.
[0026] In the various embodiments of this application, "near end" and "far end" refer to the distance of each component from the user in the usage environment. The end closer to the user is designated as the "near end", and the end farther from the user is designated as the "far end".
[0027] This application provides an insertion part 100, as shown in Figure 1. The insertion part 100 is used for an endoscope 1 and can be inserted into the human body to perform medical operations. For example, the endoscope 1 may also include an operating part 500, and the proximal end of the insertion part 100 is connected to the operating part 500.
[0028] Please refer to Figures 2 and 3. The insertion part 100 includes an insertion tube 110, a front end component 120, and a first drive mechanism 130. The front end component 120 is connected to the distal end of the insertion part 100, and the first drive mechanism 130 is connected to the front end component 120.
[0029] Please refer to Figure 3. The insertion tube 110 has a first channel 111, which extends from the proximal end of the insertion tube 110 to the distal end. For example, the insertion tube 110 has a hollow structure, and the first channel 111 can be used for injecting media, inserting treatment instruments, etc. The treatment instruments can be biopsy forceps, laser devices, etc. This embodiment does not impose specific limitations.
[0030] Endoscope 1 may be equipped with a camera module 125 to observe the internal condition of the human body. However, the camera module 125 may obstruct or occupy the first channel 111 of the insertion part 100, resulting in a limited cross-sectional area of the first channel 111, which in turn severely restricts the passage and actual flow rate of the first channel 111. In this embodiment, please continue to refer to FIG3. The front end assembly 120 includes a device mounting part 121, a second channel 122, and an opening 123. The opening 123 is disposed on the distal sidewall of the second channel 122 and communicates with the second channel 122. The second channel 122 penetrates the front end assembly 120 and communicates with the first channel 111, so that media can be injected into the opening 123, or a treatment instrument can be inserted into the opening 123.
[0031] Please refer to Figure 3. The device mounting section 121 can be used to mount camera module 125, lighting module, etc., but this embodiment is not limited to these. Figure 3 shows a schematic diagram of the structure of camera module 125 and device mounting section 121. Device mounting section 121 partially blocks the first channel 111, and opening 123 is located on the side of second channel 122 away from device mounting section 121. Device mounting section 121 and opening 123 are relatively independent. Media or handling instruments can extend from opening 123 without interfering with the normal operation of device mounting section 121 and other components mounted on device mounting section 121.
[0032] As shown in Figure 3, the bottom of the opening 123 extends to the proximal end of the device mounting portion 121. The bottom of the opening 123 can be the end of the opening 123 furthest from the device mounting portion 121, and the top of the opening 123 can also be the end of the opening 123 furthest from the device mounting portion 121. For example, the end face forming the opening 123 is configured as a bevel so that the top of the opening 123 extends to the distal end of the front end assembly 120, and the bottom of the opening 123 can extend to the proximal end of the device mounting portion 121 in the axial direction of the insertion portion 100. The front end assembly 120 is rotatably engaged with the distal end of the insertion tube 110. A first drive mechanism 130 is connected to the front end assembly 120 and is used to drive the front end assembly 120 to deflect towards a first side 160 of the insertion tube 110. The first side 160 of the insertion tube 110 is the side of the insertion tube 110 furthest from the opening 123. For example, please refer to Figures 3 and 4. Figure 3 is a structural schematic diagram of the device mounting portion 121 before deflection, and Figure 4 is a structural schematic diagram of the device mounting portion 121 after deflection. The first drive mechanism 130 can drive the front end assembly 120 to deflect towards the first side 160 of the insertion tube 110, and the deflection direction is shown as L2 in Figure 4. During this process, the orientation of the opening 123 changes, and the projected area of the opening 123 on the axis of the insertion portion 100 increases. For example, d1 in Figure 3 is smaller than d2 in Figure 4, and the projected area of the opening 123 on the axial direction of the insertion portion 100 (as shown by L1 in Figure 4) increases significantly after deflection. This arrangement allows the opening 123, which is limited by the spatial layout, to have its projected area significantly increased as the front end assembly 120 deflects, thereby improving the throughput and flow rate of the opening 123.
[0033] Understandably, the bottom of the opening 123 extends to the proximal end of the device mounting portion 121. In the axial direction of the insertion portion 100, the line connecting the device mounting portion 121 and the bottom of the opening 123 is inclined along the direction from the device mounting portion 121 to the opening 123. As the orientation of the opening 123 changes, the angle of inclination between the line connecting the device mounting portion 121 and the bottom of the opening 123 and the radial direction of the insertion portion 100 gradually decreases. In the axial direction of the insertion portion 100, the area of the device mounting portion 121 obstructing the first channel 111 gradually decreases to improve the throughput and flow rate of the opening 123.
[0034] Preferably, referring to Figure 5, the front end assembly 120 and the insertion tube 110 are rotatably engaged, with a rotation axis between them. The bottom of the opening 123 extends to one side of the rotation axis near the proximal end of the insertion portion 100. Exemplarily, the front end assembly 120 and the insertion tube 110 are pivotally engaged, and the rotation axis between them can be the axis of the pivot. This arrangement allows the bottom of the opening 123 to extend to one side of the rotation axis near the proximal end of the insertion portion 100. The bottom of the opening 123 does not rotate with the pivot relative to the insertion tube 110, while the top of the opening 123 rotates with the pivot toward the device mounting portion 121. The two ends of the opening 123 move in opposite directions, causing the opening 123 to deform. The deformed opening 123 increases in size, further improving its throughput and flow rate.
[0035] In this embodiment, referring to FIG6, the insertion part 100 may further include a second driving mechanism 140, which is connected to the front end assembly 120 and is used to drive the front end assembly 120 to deflect towards the side of the insertion tube 110 closer to the opening 123. This arrangement allows for flexible control of the rotation of the front end assembly 120, so that the device mounting part 121 and its camera module 125 face different directions for observation by medical personnel. In addition, the orientation of the opening 123 changes accordingly, so that the opening 123 can be oriented in different directions to aspirate or inject media.
[0036] In this embodiment, the front-end component 120 can switch between a first position and a second position. For example, as shown in FIG3, when the front-end component 120 is in the first position, the front-end component 120 is coaxial with the insertion tube 110, and the front-end component 120 is in a rotational limiting engagement with the insertion part 100. As shown in FIG4, when the front-end component 120 is in the second position, the front-end component 120 is deflected relative to the insertion tube 110 to the side of the insertion tube 110 away from the opening 123, thereby increasing the projected area of the opening 123 in the insertion tube 110 and improving the throughput and flow rate of the opening 123.
[0037] In one embodiment, referring to Figure 6, the first drive mechanism 130 and the second drive mechanism 140 can be used to drive the front-end assembly 120 to switch the front-end assembly 120 between a first position and a second position. Further, the second drive mechanism 140 and the first drive mechanism 130 are respectively disposed on opposite sides of the insertion tube 110, and the first drive mechanism 130 and the second drive mechanism 140 apply opposite forces to the front-end assembly 120. As shown in Figure 4, the first drive mechanism 130 drives the front-end assembly 120 to deflect towards the side away from the opening 123. As shown in Figure 7, the second drive mechanism 140 drives the front-end assembly 120 to deflect towards the side closer to the opening 123, with the deflection direction shown as L3 in Figure 7. This arrangement allows for flexible control of the deflection direction of the front-end assembly 120, improving the throughput and flow rate of the opening 123, or restoring it to its original state, to adapt to different implementation scenarios.
[0038] In addition, as shown in Figure 7, the end face forming the opening 123 can be a bevel. The second drive mechanism 140 can rotate the device mounting portion 121 toward the axis of the insertion portion 100, so that the surface of the device mounting portion 121 away from the opening 123 is inclined relative to the axis of the insertion portion 100. This arrangement allows the front end assembly 120 to be approximately tapered, with the top of the front end assembly 120 approximately located on the axis of the insertion portion 100. The tapered front end assembly 120 has a guiding function, allowing the insertion portion 100 to be inserted along its own axis, thereby improving the insertion effect of the insertion portion 100.
[0039] In this embodiment, referring to Figure 8, the insertion tube 110 may further include an active bending section 150. The active bending section 150 can be rotated relative to the insertion portion 100 under the operation of a medical professional. The active bending section 150 is used to deflect toward a first side 160 and / or a second side 170 of the insertion portion 100. This configuration allows the active bending section 150 to rotate along two axes; in other words, the active bending section 150 can rotate toward the first side 160 closer to or farther from the insertion portion 100 (as shown by L4 in Figure 8). The active bending section 150 can also rotate toward the second side 170 closer to or farther from the insertion portion 100 (as shown by L5 in Figure 8), enabling the active bending section 150 to achieve four-way rotation. The four-way rotating active bending section 150 allows doctors to easily bypass obstacles within the body and accurately locate the area requiring examination or treatment during endoscopic examinations or surgeries, allowing medical professionals to observe and analyze the patient's internal condition more meticulously.
[0040] As shown in Figure 9, the first side 160 is one side of the first radial direction of the insertion tube 110, and the second side 170 is one side of the second radial direction of the insertion tube 110. The first radial direction and the second radial direction are perpendicular to each other. It can be understood that the first radial direction can be the diameter of the insertion tube 110 extending vertically, and the second radial direction can be the diameter of the insertion tube 110 extending horizontally; the two are perpendicular to each other. For example, the first side 160 can be the lower side of the insertion part 100, and the second side 170 can be the left side of the insertion part 100.
[0041] Please refer back to Figure 8. The first drive mechanism 130 is connected to the active bending section 150, and the first drive mechanism 130 drives the active bending section 150 to deflect towards the first side 160 or the second side 170. By receiving operations from the physician, the first drive mechanism 130 can respond quickly and accurately, driving the active bending section 150 to deflect in the desired direction in a smooth and controllable manner. This setup significantly improves the flexibility and accuracy of endoscopic examinations and surgeries. When the first channel 111 and the second channel 122 are in operation, the first drive mechanism 130 drives the active bending section 150 to deflect towards the first side 160 to improve the flow and passage of the opening 123. When the insertion part 100 needs to penetrate into narrow and tortuous cavities, medical personnel manipulate the first drive mechanism 130 to bend towards the first side 160 or the second side 170 to drive the active bending section 150 to deflect at the optimal angle and position, further improving the safety and efficiency of endoscopic examinations and surgeries.
[0042] In this embodiment, referring to Figure 10, the active bending segment 150 may include a first rotating joint 151 and a second rotating joint 152. The distal end of the first rotating joint 151 is rotatably connected to the front end assembly 120, and the second rotating joint 152 is rotatably connected to the proximal end of the first rotating joint 151. Exemplarily, the first rotating joint 151 and the front end assembly 120 are rotatably connected via a first pivot, allowing the camera module 125 and the opening 123 of the front end assembly 120 to face different directions. The second rotating joint 152 is rotatably connected to the first rotating joint 151 via a second pivot, further increasing the rotation range of the front end assembly 120 to enhance the working range of the camera module 125 and the opening 123. This configuration not only improves the observation capabilities of the endoscope 1, enabling it to capture more details, but also provides doctors with a wider treatment operation space.
[0043] Referring again to Figure 9, the first side 160 and the third side 180 can be two mutually distant sides of the insertion part 100. For example, the first side 160 can be the lower side of the insertion part 100, the second side 170 can be the left side of the insertion part 100, and the third side 180 can be the upper side of the insertion part 100, and the second side 170 can be perpendicular to the third side 180.
[0044] When it is necessary to control the insertion part 100 to rotate toward the third side 180, the front end assembly 120 bends toward the third side 180 relative to the first rotating joint 151. The device mounting part 121 may squeeze the opening 123, causing the opening 123 to close or partially close, affecting the normal suction of the opening 123. In this embodiment, referring to FIG11, when the insertion part 100 is straight, the resistance of the first rotating joint 151 to rotate toward the third side 180 of the insertion tube 110 relative to the second rotating joint 152 is the first resistance. The third side 180 of the insertion tube 110 and the first side 160 of the insertion tube 110 are opposite sides of the insertion tube 110. The resistance of the front end assembly 120 to rotate toward the third side 180 of the insertion tube 110 relative to the first rotating joint 151 is the second resistance, which is greater than the first resistance. For example, as shown in FIG11, relative to the first rotating joint 151, the front end assembly 120 can only rotate toward the first side 160, or the front end assembly 120 can only rotate toward the third side 180 by a small amount. The bottom of the opening 123 can extend between the front end component 120 and the first rotating section 151. When the front end component 120 bends toward the third side 180 relative to the first rotating section 151, this arrangement can preferentially rotate the first rotating section 151 relative to the second rotating section 152, so as to realize the overall rotation of the first rotating section 151 and the front end component 120, avoiding the bottom and top of the opening 123 from moving towards each other, and maintaining the passage and flow of the opening 123.
[0045] In a more specific embodiment, referring to Figure 12, the front-end component 120 may include a front-end seat 124, which is integrally formed with the active bending section 150. In other words, the front-end component 120 and the active bending section 150 can be integrally formed by injection molding or other methods, and the active bending section 150 can be integrally cut, resulting in a faster molding rate and lower manufacturing cost.
[0046] Specifically, a first arcuate groove 153 is disposed between the first rotating section 151 and the front end assembly 120. The first arcuate groove 153 is located on the first side 160 of the active bending section 150 and extends circumferentially along the insertion portion 100. A second arcuate groove 154 and a first arcuate slit 155 are disposed between the first rotating section 151 and the second rotating section 152. The second arcuate groove 154 is located on the third side 180 of the active bending section 150, and the first arcuate slit 155 is located on the first side 160 of the active bending section 150. The second arcuate groove 154 and the first arcuate slit 155 can be distributed circumferentially along the insertion portion 100. The arrangement of the first arcuate slit 155 can make the area of the active bending section 150 between the first rotating section 151 and the second rotating section 152 smaller, and the cross-sectional area of the active bending section 150 between the first rotating section 151 and the front end assembly 120 larger. With the same or similar materials and shapes, the cross-sectional area between the first rotating section 151 and the front end assembly 120 is larger, making it more difficult for them to deform. As a result, the second resistance is greater than the first resistance, thus enabling the first rotating section 151 to rotate relative to the second rotating section 152, maintaining the passage and flow of the opening 123.
[0047] In other words, the connection between the front-end assembly 120 and the front-end seat 124 is the first connection, and the connection between the first rotating joint 151 and the second rotating joint 152 is the second connection. The stiffness of the first connection is greater than that of the second connection. For example, the cross-sectional area of the first connection is larger than that of the second connection. Compared to the second connection, the first connection has higher stiffness and weaker deformation capacity. Because the first connection has a weaker deformation capacity than the second connection, it requires a greater force to deform, thus the second resistance is greater than the first resistance. This arrangement allows for preferential rotation of the first rotating joint 151 relative to the second rotating joint 152 to maintain the passage and flow of the opening 123.
[0048] Preferably, when the active bending section 150 is in a straightened state, the portions of the first rotating joint 151 and the second rotating joint 152 forming the first arc-shaped slit 155 abut against each other. Relative to the second rotating joint 152, the first arc-shaped slit 155 restricts the first rotating joint 151 from rotating towards the first side 160, but does not restrict it from rotating away from the first side 160. When the insertion portion 100 needs to rotate towards the first side 160, this arrangement allows the front end assembly 120 to rotate, preventing the first rotating joint 151 from rotating relative to the second rotating joint 152, thus avoiding interference from the first side 160 with the area change of the opening 123, effectively improving the usability.
[0049] For example, referring to Figure 12, the width of the first arc-shaped slit 155 is smaller than that of the first arc-shaped groove 153. When it is necessary to control the insertion part 100 to rotate toward the third side 180, the groove walls forming the first arc-shaped slit 155 separate, so that the groove walls forming the second arc-shaped groove 154 converge, realizing the first rotating joint 151 bending toward the third side 180 relative to the second rotating joint 152. However, when it is necessary to control the insertion part 100 to rotate toward the first side 160, the groove walls forming the first arc-shaped slit 155 quickly abut against each other, making it difficult for the first rotating joint 151 to rotate toward the first side 160 relative to the second rotating joint 152. During this period, the groove walls forming the first arc-shaped groove 153 converge with each other, realizing the deflection of the front end assembly 120 toward the first side 160 of the first rotating joint 151. This setting can drive the front end assembly 120 to rotate toward the first side 160, thereby increasing the area of the opening 123 and preventing the first arc-shaped slit 155 from interfering with the rotation of the front end assembly 120.
[0050] To achieve the above and other related objectives, this application provides an endoscope 1, as shown in Figures 1 and 12, including the aforementioned insertion portion 100 and a negative pressure suction valve 200, which is connected to a first channel 111. The endoscope 1 can be a bronchoscope, pyeloscope, esophagoscope, gastroscope, colonoscope, otoscope, rhinoscope, oral endoscope, laryngoscope, colposcope, laparoscope, arthroscope, etc. This application does not specifically limit the type of endoscope 1.
[0051] In this embodiment, the negative pressure suction valve 200 is connected to the first drive mechanism 130. When the negative pressure suction valve 200 is opened, the first drive mechanism 130 drives the front end assembly 120 to deflect toward the first side 160 of the insertion part 100. This deflection of the front end assembly 120 toward the first side 160 of the insertion part 100 causes a change in the orientation of the opening 123, rapidly increasing its cross-sectional area. When the negative pressure suction valve 200 injects flushing fluid to clean the observation area or assist in diagnosis, the enlarged opening 123 also accelerates the injection speed of the medium, improving operational efficiency. In other words, the activation of the negative pressure suction valve 200 automatically and synchronously adjusts the state of the front end assembly 120 and the opening 123, ensuring a faster and more efficient process for suctioning or injecting the medium, simplifying the operation, and improving the injection or suction efficiency of the insertion part 100.
[0052] In a more specific embodiment, the negative pressure suction valve 200 is provided with a transmission member 210, which is pulsatorically connected to the first drive mechanism 130. When the negative pressure suction valve 200 is open, the transmission member 210 drives the first drive mechanism 130, which in turn drives the front end assembly 120 to synchronously increase the flow rate of the opening 123. For example, the negative pressure suction valve 200 has a valve body that is slidably disposed relative to the operating part 500 of the endoscope 1. Medical personnel need to press the valve body to open the negative pressure suction valve 200. The transmission member 210 is connected to the valve body. Simultaneously with the valve body being pressed, the first drive mechanism 130 is also driven by the transmission member 210 to achieve synchronous movement of the negative pressure suction valve 200 and the front end assembly 120.
[0053] In another embodiment, referring to Figures 13 and 14, the endoscope 1 may further include a traction wheel 400 and a traction rope 300, which are connected to each other. The traction rope 300 is adapted to drive the insertion portion 100 to deflect. A medical professional moves the traction wheel 400, which drives the traction rope 300, which in turn drives the insertion portion 100 to deflect. The distal end of the insertion portion 100 is rotatably configured to allow it to enter a curved cavity.
[0054] The first drive mechanism 130 is a traction rope 300, which is connected to the traction wheel 400. The first drive mechanism 130 can drive the insertion part 100 to deflect towards the first side 160 or towards the third side 180. Furthermore, medical personnel can directly operate the first drive mechanism 130 by manipulating the traction wheel 400 to deflect the front end component 120. This configuration integrates the function of the first drive mechanism 130 into the traction rope 300, reducing the number of components in the endoscope 1 and improving the assembly efficiency of the endoscope 1.
[0055] Referring to Figure 14, the first drive mechanism 130 may further include a locking part 131, which may be a spring, rack, etc. For example, the traction wheel 400 may be a gear. The locking part 131 has teeth that mesh with the traction wheel 400, thus enabling it to engage with the traction wheel 400. When the negative pressure suction valve 200 is open, the locking part 131 locks the traction wheel 400; when the negative pressure suction valve 200 is closed, the locking part 131 releases the traction wheel 400. For example, the negative pressure suction valve 200 has a valve body that slides relative to the operating part 500 of the endoscope 1. Medical personnel need to press the valve body to open the negative pressure suction valve 200. The locking part 131 simultaneously locks the traction wheel 400 to prevent rotation of the traction wheel 400 and thus avoid affecting the deflection of the insertion part 100. The transmission member 210 is connected to the valve body, and the traction rope 300 is located in the movement path of the transmission member 210. When the valve body is pressed, the traction rope 300 is also driven by the transmission component 210, realizing the synchronous movement of the negative pressure suction valve 200 and the front end component 120.
[0056] The technical solution adopted in this application achieves the following beneficial effects: The device mounting part 121 can be used to mount devices, such as cameras, lighting lamps, etc. The insertion part 100 can be inserted into the patient's body up to the affected area. In the insertion part 100, the first channel 111 and the second channel 122 can perform suction or insert medical devices. During this process, the drive mechanism can drive the device mounting part 121 to deflect, thereby increasing the area of the opening 123 in the axial direction of the insertion part 100. This setting can increase the area at the opening 123, reduce the impact of the device mounting part 121 and the camera module 125 mounted on the device mounting part 121 on the cross-sectional area of the first channel 111, increase the flow rate of the insertion part 100, and improve the use effect and working efficiency of the insertion part 100. In addition, the first channel 111 can insert larger volume medical devices, improve the adaptability of the insertion part 100, and expand the application scenarios of the insertion part 100.
[0057] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.
[0058]
Claims
1. An insertion part, characterized in that, The insertion portion is used for an endoscope, and the insertion portion includes: An insertion tube having a first channel extending from the proximal end of the insertion tube to the distal end of the insertion tube, the insertion tube including a first rotating joint and a second rotating joint, the second rotating joint being rotatably connected to the proximal end of the first rotating joint; A front-end assembly is rotatably connected to the distal end of the first rotating joint. The front-end assembly has a device mounting portion, a second channel penetrating the front-end assembly, and an opening disposed on the distal sidewall of the second channel. The device mounting portion partially obscures the first channel. The second channel communicates with the first channel. The opening is located on the side of the second channel away from the device mounting portion, and the bottom of the opening extends to the proximal end of the device mounting portion. The front-end assembly rotatably engages with the distal end of the insertion tube. A first driving mechanism is connected to the front end assembly and is used to drive the front end assembly to deflect toward a first side of the insertion tube, wherein the first side of the insertion tube is the side of the insertion tube away from the opening. When the insertion part is straight, the resistance to the first rotating joint rotating toward the third side of the insertion tube relative to the second rotating joint is the first resistance, the third side and the first side are opposite sides of the insertion tube, and the resistance to the front end assembly rotating toward the third side of the insertion tube relative to the first rotating joint is the second resistance, the second resistance is greater than the first resistance.
2. The insertion part according to claim 1, characterized in that, The front end assembly and the insertion tube are rotatably engaged and have a rotation axis, with the bottom of the opening extending to the side of the rotation axis adjacent to the proximal end of the insertion portion. And / or, the insertion part further includes a second driving mechanism, the second driving mechanism being connected to the front end assembly, and the second driving mechanism being used to drive the front end assembly to deflect toward the side of the insertion tube closer to the opening.
3. The insertion part according to claim 1, characterized in that, The front end component can switch between a first position and a second position. When the front end component is in the first position, the front end component is coaxial with the insertion tube and the front end component is rotated and limited in conjunction with the insertion part. When the front end component is in the second position, the front end component is deflected relative to the insertion tube to the side of the insertion tube away from the opening.
4. The insertion part according to claim 1, characterized in that, The insertion tube further includes an active bending section, which is used to deflect toward the first side and / or the second side of the insertion portion. The first side is one side of the first radial direction of the insertion tube, and the second side is one side of the second radial direction of the insertion tube. The first radial direction is perpendicular to the second radial direction.
5. The insertion part according to claim 4, characterized in that, The first driving mechanism is connected to the active bending section, and the first driving mechanism drives the active bending section to deflect to the first side or the second side.
6. The insertion portion according to claim 5, characterized in that, The front end assembly includes a front end seat, which is integral with the active bending section. A first arc-shaped groove is disposed between the first rotating joint and the front end assembly. The first arc-shaped groove is located on the first side of the active bending section and extends circumferentially along the insertion portion. A second arc-shaped groove and a first arc-shaped slit are disposed between the first rotating joint and the second rotating joint. The second arc-shaped groove is disposed on the third side of the active bending section, and the first arc-shaped slit is disposed on the first side of the active bending section. The first arc-shaped slit and the second arc-shaped groove are distributed along the circumference of the insertion part. The connection part connecting the front end component and the front end seat is the first connection part, and the connection part connecting the first rotating joint and the second rotating joint is the second connection part. The stiffness of the first connection part is greater than that of the second connection part. When the active bending section is in a straightened state, the portions of the first rotating joint and the second rotating joint that form the first arc-shaped cut mutually abut against each other.
7. An endoscope, characterized in that, include: The insertion portion as described in any one of claims 1-6; as well as A negative pressure suction valve, which is connected to the first channel.
8. The endoscope according to claim 7, characterized in that, The negative pressure suction valve is connected to the first drive mechanism. When the negative pressure suction valve is opened, the first drive mechanism drives the front end assembly to deflect toward the first side of the insertion part.
9. The endoscope according to claim 8, characterized in that, The endoscope also includes a traction wheel. The first drive mechanism is a traction rope suitable for driving the insertion part to deflect. The traction rope is connected to the traction wheel. The first drive mechanism also includes a locking part. When the negative pressure suction valve is open, the locking part can lock the traction wheel. When the negative pressure suction valve is closed, the locking part can release the traction wheel.