Insertion portion and endoscope

Abstract

The present invention discloses an insertion portion and an endoscope, relating to the technical field of endoscopes. The insertion portion includes a first tube section, a second tube section and a driving mechanism. The proximal end of the first tube section is rotatably connected to the distal end of the second tube section. The driving mechanism is connected to the first tube section, and the driving mechanism can drive the first tube section to rotate relative to the second tube section around the axis of the distal end of the second tube section. Since the second tube section is directly driven by the driving mechanism, the transmission path of the force for driving the second tube section to rotate is shorter, thereby making the process of driving the second tube section to rotate more sensitive and more sufficient. It ensures that the endoscope can perform precise, sensitive and sufficient rotational adjustment during operation, improves the accuracy and flexibility of inspection and treatment, and solves the problem in the prior art that the distal end of the insertion portion is difficult to rotate sufficiently when controlling the turning of the distal end of the insertion portion by rotating the insertion portion of the handle, which affects the smooth progress of the operation.

Description

Technical Field

[0001] The present invention relates to the field of endoscopes, and in particular to an insertion portion and an endoscope. Background Art

[0002] An endoscope is a medical optical instrument that enters the body through a natural body cavity (such as the oral cavity, nasal cavity, anus) or a small incision of the human body, directly observes the internal conditions of internal organs, and can perform operations such as biopsy, hemostasis, and resection.

[0003] When performing a stone removal operation assisted by an endoscope, the endoscope needs to enter the complex internal environment of the kidney through a sheath. During this process, a snake-like bend usually occurs between the sheath and the insertion portion of the endoscope, greatly increasing the difficulty of the surgical operation.

[0004] To adapt to different spatial positions and observation angles, the operator usually relies on manually operating the rotation of the insertion portion of the handle or the axial rotation of the distal insertion portion. However, when transmitting the axial rotation to the distal end, the transmission effect of such means is very poor, which greatly affects the flexibility and precision of the operator during the surgical operation.

[0005] Especially when dealing with a complex and tortuous structure such as the kidney, the above operation limitations are particularly obvious. The traditional manual control method not only increases the labor intensity of the operator, but also may cause insufficient rotation of the distal end of the insertion portion of the endoscope, further affecting the smooth progress of the operation.

[0006] Therefore, how to achieve more effective and precise rotation control when the distal end of the insertion portion of the endoscope turns has always been an important challenge faced by the related technical field of endoscopes. Summary of the Invention

[0007] The present invention discloses an insertion portion and an endoscope to at least partially improve the above technical problems.

[0008] To solve the above problems, the present invention adopts the following technical solutions:

[0009] On the one hand, an embodiment of the present application provides an insertion portion applied to an endoscope. The insertion portion includes a first tube segment, a second tube segment, and a driving mechanism. The proximal end of the first tube segment is rotatably connected to the distal end of the second tube segment. The driving mechanism is connected to the first tube segment, and the driving mechanism can drive the first tube segment to rotate relative to the second tube segment around the axis of the distal end of the second tube segment.

[0010] On the other hand, an embodiment of the present application further provides an insertion portion, including the above-mentioned insertion portion. The endoscope further includes a handle portion and an operating member disposed on the handle portion. The operating member is connected to the driving mechanism, and the operating member can drive the driving mechanism to drive the first pipe section to rotate relative to the second pipe section around the axis of the distal end of the second pipe section.

[0011] The technical solution adopted by the present invention can achieve the following beneficial effects:

[0012] The insertion portion provided by the embodiment of the present application drives the first pipe section to rotate relative to the second pipe section around the axis of the distal end of the second pipe section by setting a driving mechanism. In the embodiment of the present application, since the second pipe section is directly driven by the driving mechanism, the transmission path of the force driving the second pipe section to rotate is shorter. As a result, the process of the connecting member driving the second pipe section to rotate is more sensitive and more sufficient. It ensures that the endoscope can perform precise, sensitive and sufficient rotational adjustment during operation, improves the accuracy and flexibility of inspection and treatment, and solves the problem in the prior art that the distal end of the insertion portion is difficult to rotate sufficiently when controlling the turning of the distal end of the insertion portion by rotating the insertion portion of the handle, which affects the smooth progress of the operation. Applying the above-mentioned insertion portion to the endoscope can also solve the above problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0014] Figure 1 FIG. 1 shows a schematic structural diagram of an endoscope in an embodiment of the present application.

[0015] Figure 2 FIG. 2 shows a schematic structural diagram of the endoscope in another perspective in an embodiment of the present application.

[0016] Figure 3 FIG. 3 shows a schematic diagram of another perspective of a part of the structure of the endoscope in an embodiment of the present application.

[0017] Figure 4 FIG. 4 shows a cross-sectional view of the endoscope in an embodiment of the present application.

[0018] Figure 5 FIG. 5 shows a schematic diagram of the structure of an insertion portion in an embodiment of the present application.

[0019] Figure 6 FIG. 6 shows a partial structural schematic diagram of the insertion portion in an embodiment of the present application.

[0020] Figure 7 The exploded view of a partial structure of an insertion part in an embodiment of the present application is shown.

[0021] Figure 8 The sectional view of a partial structure of an insertion part in an embodiment of the present application is shown.

[0022] Figure 9 The exploded view of a connecting member in an insertion part in an embodiment of the present application is shown.

[0023] Figure 10 The exploded view of a connecting member in an insertion part in an embodiment of the present application from another perspective is shown.

[0024] Figure 11 is Figure 4 the enlarged view of part A in

[0025] In the figure: 1. Insertion part; 110. First structural member; 111. First guiding structure; 120. Second structural member; 121. Second guiding structure; 122. Limiting structure; 123. Positioning structure; 130. Driving mechanism; 131. Connecting member; 132. Driving member; 133. First connecting structure; 134. Second connecting structure; 140. Gasket; 160. Reset structure; 170. Damping structure; 20. Traction rope; 30. Sleeve; 310. First connecting portion; 320. Second connecting portion; 60. First pipe section; 70. Second pipe section; 2. Handle portion; 3. Outer shell; 4. Operating member; 5. Traction wheel; 100. Endoscope. Detailed implementation manners

[0026] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other implementation manners obtained by those of ordinary skill in the art without creative efforts shall fall within the scope protected by the present invention.

[0027] The terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such used data may be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order different from those illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually of the same category, and do not limit the number of objects. For example, the first object may be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally represents an "or" relationship between the associated objects before and after.

[0028] In various embodiments of the present application, "proximal" and "distal" refer to the relative positions of each component with respect to the user in the usage environment. Among them, the end closer to the user is designated as "proximal", and the end farther from the user is designated as "distal".

[0029] Here, the inventive concept of the present application is described as follows:

[0030] An endoscope is a medical optical instrument that enters the body through a natural body cavity (such as the oral cavity, nasal cavity, anus) or a small incision of the human body to directly observe the internal conditions of internal organs, and can perform operations such as biopsy, hemostasis, and resection.

[0031] When performing a stone removal operation assisted by an endoscope, the endoscope needs to enter the complex internal environment of the kidney through a sheath. During this process, a snake-like bend usually occurs between the sheath and the insertion part of the endoscope, greatly increasing the difficulty of the surgical operation.

[0032] In order to adapt to different spatial positions and observation angles, the operator usually relies on manually operating the rotation of the proximal part of the insertion handle or the axial rotation of the distal insertion part. However, when transmitting the axial rotation to the distal end, the transmission effect of such means is very poor, which greatly affects the flexibility and accuracy of the operator during the surgical operation.

[0033] Especially when dealing with a complex and tortuous structure such as the kidney, the above operation limitations are particularly obvious. The traditional manual control method not only increases the labor intensity of the operator, but also may cause insufficient rotation of the distal end of the insertion part of the endoscope, further affecting the smooth progress of the operation.

[0034] The inventor found that the root cause of the above problems lies in:

[0035] 1. When the operator rotates the proximal part of the insertion handle, the insertion part is often bent, resulting in friction between the insertion part and the sheath, and thus making it difficult for the rotational force to be transmitted to the distal end of the insertion part.

[0036] 2. The force applied by the operator to the proximal part of the insertion part to rotate the distal end of the insertion part is too far from the distal end of the insertion part, resulting in difficulty in transmitting the rotational force to the distal end of the insertion part.

[0037] Based on this, the inventor provides an insertion part, which can connect a driving mechanism with a first pipe section, and the driving mechanism can drive the first pipe section to rotate relative to the second pipe section around the axis of the distal end of the second pipe section, thereby enabling the turning of the snake bone joint.

[0038] The following combines the attached Figures 1 to 11 , and through specific embodiments and their application scenarios, an insertion part 1 and an endoscope 100 provided by the present application are described in detail.

[0039] Please refer to Figure 1 , an endoscope 100 is provided in an embodiment of the present application. In the embodiment of the present application, the endoscope 100 can be a bronchoscope, a pyeloscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a nasal endoscope, an oral endoscope, a laryngoscope, a vaginoscope, a laparoscope, an arthroscope, etc. The embodiment of the present application does not specifically limit the type of the endoscope 100.

[0040] The endoscope 100 may include: a handle portion 2 and an insertion portion 1 that are connected to each other. The handle portion 2 includes a housing 3, and the housing 3 can be used to accommodate other components such as electronic modules disposed in the handle portion 2. The housing 3 can refer to the related structure in the prior art and will not be elaborated here.

[0041] Please also refer to Figure 5 and Figure 6 , the insertion portion 1 may include: a first tube segment 60, a second tube segment 70, and a driving mechanism 130. The proximal end of the first tube segment 60 may be rotatably connected to the distal end of the second tube segment 70. The driving mechanism 130 may be connected to the first tube segment 60, and the driving mechanism 130 may drive the first tube segment 60 to rotate relative to the second tube segment 70 around the axis of the distal end of the second tube segment 70.

[0042] The embodiment of the present application does not limit the specific form and structure of the first tube segment 60 and the second tube segment 70. For example, in one embodiment, one of the first tube segment 60 and the second tube segment 70 may be an intubation tube or a mounting tube connected to the intubation tube, and the other may be a curved tube.

[0043] Preferably, in this embodiment, the first tube segment 60 is a mounting tube and the second tube segment 70 is a curved tube. It can be understood that generally the hardness of the intubation tube is relatively low, while the hardness of the mounting tube and the curved tube is relatively high. Therefore, if the first tube segment 60 is set as the intubation tube, there will be a problem of difficult assembly. Therefore, the mounting tube and the curved tube with relatively high hardness are used as the basic components for assembling the first tube segment 60 and the second tube segment 70. In this way, during the actual production and assembly process, after the first tube segment 60 and the second tube segment 70 are assembled, the first tube segment 60 and the second tube segment 70 are then installed with the intubation tube, which is beneficial to reducing the assembly difficulty of the entire insertion portion 1.

[0044] In this embodiment, the first pipe section 60 may be provided with a first structural member 110, the second pipe section 70 may be provided with a second structural member 120, and the first structural member 110 and the second structural member 120 are nested and rotatably engaged. In a specific embodiment, the first structural member 110 may be a mounting pipe, and the second structural member 120 may be a snake bone joint. It should be noted that, in this embodiment, a positioning structure 123 may be further provided on the outer surface of the first structural member 110, and the positioning structure 123 may be used to abut against the intubation tube. As described above, when the assembled first pipe section 60 and second pipe section 70 are assembled with the intubation tube, it can be indicated that the assembled first pipe section 60 and second pipe section 70 are assembled in place with the intubation tube by making the intubation tube abut against the positioning structure 123.

[0045] In addition, the embodiments of the present application do not limit the setting manner of the first structural member 110 and the first pipe section 60, nor do they limit the setting manner of the second structural member 120 and the second pipe section 70. In one embodiment, the first structural member 110 may be integrally formed with the first pipe section 60 or may be separately provided. Similarly, the second structural member 120 may be integrally formed with the second pipe section 70 or may be separately provided, and specific settings can be made according to actual situations.

[0046] As described above, in this embodiment, the driving mechanism 130 may include a connecting member 131. One of the first structural member 110 and the second structural member 120 has a first guiding structure 111 axially provided along the insertion portion 1, and the other has a second guiding structure 121 spirally provided around the axis of the insertion portion 1. The connecting member 131 may be slidably engaged with the first guiding structure 111 and the second guiding structure 121 respectively, and the connecting member 131 may move axially along the insertion portion 1 under the guidance of the first guiding structure 111 and drive the second guiding structure 121 to rotate relative to the first guiding structure 111.

[0047] The embodiments of the present application also do not limit the specific forms of the first guiding structure 111 and the second guiding structure 121. For example, in one embodiment, the first guiding structure 111 may be provided as a hole or a groove, and the second guiding structure 121 may also be provided as a hole or a groove. Specific settings can be made according to actual situations and are not limited herein.

[0048] Moreover, in a preferred embodiment, the first guiding structure 111 is provided so as not to penetrate through both ends of the first structural member 110, and the second guiding structure 121 also does not penetrate through both ends of the second structural member 120, which can prevent the connecting member 131 from falling off during the process of moving relative to the first structural member 110 and the second structural member 120.

[0049] In addition, the embodiments of the present application do not limit the number and arrangement of the first guiding structures 111 either. For example, in one embodiment, the number of the first guiding structures 111 can be set to be greater than or equal to two, and the first guiding structures 111 can be evenly distributed along the circumferential direction of the first structural member 110, so that the contact areas between the connecting member 131 and the first guiding structures 111 are equal, and the contact positions are more symmetrical, which is convenient for the connecting member 131 to move relative to the first structural member 110. Similarly, the number of the second guiding structures 121 can also be set to be greater than or equal to two, and the second guiding structures 121 can also be evenly distributed along the circumferential direction of the second structural member 120. For specific details, reference can be made to the relevant description of the first guiding structures 111, which will not be elaborated here.

[0050] Please also refer to Figures 6 - 8 , in a specific embodiment, the first guiding structure 111 is a strip-shaped groove axially arranged along the insertion portion 1, and at least part of the connecting member 131 is located in the strip-shaped groove and is in sliding fit with the strip-shaped groove. The second guiding structure 121 is a spiral groove spirally arranged around the axis of the insertion portion 1, and at least part of the connecting member 131 is located in the spiral groove and is in sliding fit with the spiral groove.

[0051] Please also refer to Figure 9 and Figure 10 , the connecting member 131 can have a first connection structure 310 and a second connection structure 320. The first connection structure 310 can be used for sliding fit with the first guiding structure 111, and the second connection structure 320 can be used for sliding fit with the second guiding structure 121.

[0052] The embodiments of the present application do not limit the specific form and structure of the connecting member 131 either. For example, in this embodiment, the connecting member 131 can be set as an annular structure, and the first connection structure 133 and the second connection structure 134 can be set as bumps protruding from the outer surface or the inner surface of the connecting member 131. In some other embodiments, the connecting member 131 can also be set as a block structure, etc., which can be specifically set according to the actual situation.

[0053] It should be noted that the embodiments of the present application do not limit the specific connection manner between the first connection structure 133 and the connector 131, nor do they limit the specific connection manner between the second connection structure 134 and the connector 131. Taking the connection manner between the first connection structure 133 and the connector 131 as an example, the first connection structure 133 and the connector 131 can be integrally formed, or can be detachably arranged, such as threaded connection or snap connection, etc., which can facilitate the assembly between the connector 131 and the first pipe section 60. Specifically, it can be set according to the actual situation. The connection manner between the second connection structure 134 and the connection frame can refer to the connection manner between the first connection structure 133 and the connector 131, and will not be elaborated here.

[0054] In this embodiment, the connector 131 can be arranged such that when the connector 131 is subjected to a force in the axial direction, the connector 131 can axially move relative to the first structural member 110 and the second structural member 120, and can drive the second structural member 120 to axially rotate relative to the first structural member 110.

[0055] In this embodiment, during the process of driving the second structural member 120 to rotate, a force in the axial direction is directly applied to the connector 131, and then the connector 131 drives the second structural member 120 to rotate through its own axial movement. In the embodiments of the present application, the transmission path of the force for driving the second structural member 120 to transmit is shorter, so that the process of the connector 131 driving the second structural member 120 to rotate is more sensitive and more sufficient.

[0056] In addition, the embodiments of the present application do not limit the specific arrangement of the connector 131. For example, in one embodiment, the connector 131 can be arranged inside the first structural member 110 and the second structural member 120. For another example, in another embodiment, the connector 131 can also be arranged between the first structural member 110 and the second structural member 120.

[0057] Please refer to again Figures 8 - 10, Continuing from the above, in this embodiment, the connecting member 131 can be disposed inside the first structural member 110 and the second structural member 120. That is to say, in this embodiment, the first structural member 110, the second structural member 120, and the connecting member 131 are in a nested relationship layer by layer. In this implementation manner, the first structural member 110 and the second structural member 120 are the same element. The first guiding structure 111 axially extends on the side wall of the first structural member, and the second guiding structure 121 threadedly extends on the side wall of the second structural member 120. And one of the first guiding structure 111 and the second guiding structure 121 that is located inside is a hole, so that it is convenient for the first structural member 110 to pass through the first guiding structure 111 or the second guiding structure 121 and contact the second guiding structure 121 or the first guiding structure 111, thereby facilitating the sliding fit between the first structural member 110 and the first guiding structure 111 and the sliding fit between the first structural member 110 and the second guiding structure 121.

[0058] That is to say, in this embodiment, the specific positions of the first structural member 110 and the second structural member 120 are not restricted either. For example, in one implementation manner, the first structural member 110 can be sleeved outside the second structural member 120. In another implementation manner, the second structural member 120 can also be sleeved outside the first structural member 110, which can be specifically set according to the actual situation.

[0059] In this embodiment, when the connecting member 131 is subjected to a force in the axial direction, the connecting member 131 will axially move relative to the first structural member 110 and the second structural member 120. And since the second guiding structure 121 opened on the side wall of the second structural member 120 is threadedly arranged, during the process of the connecting member 131 axially moving relative to the second structural member 120, it will drive the second structural member 120 to rotate axially relative to the first structural member 110. And in this embodiment, the connecting member 131 can directly apply a force to the second structural member 120 to make the second structural member 120 rotate. Therefore, in this embodiment, the path of force transmission is shorter, and the operation of driving the second structural member 120 to rotate by controlling the axial movement of the connecting member 131 is more accurate and sensitive.

[0060] In addition, in another embodiment, the first guiding structure 111 extends threadedly on the side wall of the first structural member 110, and the second guiding structure 121 also extends threadedly on the side wall of the second structural member 120. The connecting member 131 can be disposed between the first structural member 110 and the second structural member 120. In this embodiment, since the movement of the connecting member 131 is along the axial direction of the first structural member 110 and the first guiding structure 111 extends threadedly on the side wall of the first structural member 110, a torque for causing the connecting member 131 to rotate circumferentially relative to the first structural member 110 and a torque for driving the second structural member 120 to rotate circumferentially relative to the first structural member 110 will be generated. At this time, the force exerted on the second structural member 120 by the connecting member 131 is a tangential force, which is a force for driving the second structural member 120 to rotate circumferentially relative to the first structural member 110. Therefore, the second structural member 120 is not subjected to a force in the axial direction, and thus the second structural member 120 will not move axially relative to the first structural member 110.

[0061] Please refer to again Figure 8 , in a specific embodiment, the first structural member 110 is further provided with a limiting structure 122 for restricting the axial movement of the second structural member 120. The end of the second structural member 120 can abut against the limiting structure 122, so as to prevent the connecting member 131 from driving the second structural member 120 to move axially simultaneously during the axial movement.

[0062] It should be noted that the specific form of the limiting structure 122 is not limited in the embodiments of the present application. For example, in this embodiment, the limiting structure 122 can be an annular step provided in the first structural member 110. Also, for example, in some other embodiments, the limiting structure 122 can also be a plurality of block-shaped steps provided in the first structural member 110, etc., which can be specifically limited according to actual situations.

[0063] Considering that the direct abutment between the first structural member 110 and the second structural member 120 may cause a large frictional force during the circumferential rotation of the second structural member 120 relative to the first structural member 110, which will in turn affect the rotation of the second structural member 120 relative to the first structural member 110, and the long-term friction between the second structural member 120 and the first structural member 110 may also cause damage to the first structural member 110 and the second structural member 120.

[0064] Therefore, please continue to refer to Figure 8, in this embodiment, the insertion portion 1 may further include a gasket 140. The gasket 140 may be disposed between the limiting structure 122 and the second structural member 120. The gasket 140 can play a role in reducing the friction coefficient between the second structural member 120 and the first structural member 110, so that the second structural member 120 can rotate more smoothly relative to the first structural member 110. At the same time, the gasket 140 can also play a role in protecting the first structural member 110 and the second structural member 120.

[0065] It can be understood that in some other embodiments, the limiting structure 122 may also be set as the gasket 140. That is to say, in this embodiment, the gasket 140 may be integrally formed with the first structural member 110, which can reduce the volume of the entire insertion portion 1 to a certain extent.

[0066] Please refer to Figure 5 , in one embodiment, the driving mechanism 130 may further include: a driving member 132. The driving member 132 may be connected to the connecting member 131. The specific form and structure of the driving member 132 are not limited in the embodiments of the present application. For example, in one embodiment, the driving member 132 may be set as a rope-like structure, so that the driving member 132 can be pulled by the operator and provide a force for the connecting member 131 to move along the axial direction of the insertion portion 1. Further, in one embodiment, the driving member 132 may include a pull rope and a sleeve 30. The sleeve 30 may be sleeved on the pull rope and connected to the second pipe section 70. The pull rope and the sleeve 30 may be slidably matched, and the distal end of the pull rope is connected to the connecting member 131.

[0067] The number and connection position of the driving members 132 are not limited in the embodiments of the present application. For example, in one embodiment, multiple groups of driving members 132 may be provided. The multiple groups of driving members 132 may be evenly connected to the connecting member 131. In this embodiment, two groups of driving members 132 are taken as an example, and the connection points of the two groups of driving members 132 and the connecting member 131 may be located on the same diameter of the cross-section of the connecting member 131, so that when the operator pulls the driving member 132, the force on the connecting member 131 is more uniform.

[0068] Continuing from the foregoing, please also refer to Figure 2 、 Figure 3 and Figure 5 , in this embodiment, the driving member 132 may extend to the handle portion 2, and in this embodiment, the handle portion 2 may further be provided with an operating member 4. The operating member 4 may be used to connect to the driving mechanism 130, specifically connect to the driving member 132, and may be used for the operator to toggle, so as to apply a force to the driving member 132 to make the driving member 132 move in the axial direction, so as to drive the driving member 132 to drive the first pipe section 60 to rotate relative to the second pipe section 70 around the axis of the distal end of the second pipe section 70.

[0069] In a preferred embodiment, the operating member 4 can be arranged at the distal end of the handle portion 2 and extend out of the housing 3. It can be understood that when the operator holds the handle portion 2, the thumb is usually directed toward the proximal end of the handle portion 2 to turn the traction wheel 5 arranged at the proximal end of the handle portion 2 for pulling the traction rope 20. Therefore, setting the operating member 4 at the distal end of the handle portion 2 can make it easier for the operator to turn the operating member 4, avoiding interference between the operator and the traction wheel 5 and the operating member 4.

[0070] Furthermore, in one embodiment, a damping structure 170 may be provided between the operating member 4 and the housing 3, so that after the operator moves the operating member 4, the operating member 4 can be kept at a specified position, and the second structural member 120 can be kept at a specified rotation angle, so that it is convenient for the operator to perform the operation. It should be noted that the embodiment of the present application does not limit the specific form of the damping structure 170. For example, in this embodiment, the damping structure 170 may be a damping sheet. In other embodiments, a rough structure may be provided on the contact surface between the housing 3 and the operating member 4 to form the damping structure 170, etc., and the specific configuration may be based on the actual situation.

[0071] Also, please refer again to Figure 5 In other embodiments, the insertion part 1 may further include: a reset structure 160, one end of which may be connected to the connecting member 131, and the other end of which may be connected to at least one of the first structural member 110 and the second structural member 120. The embodiment of the present application does not limit the specific form of the reset structure 160. For example, in some embodiments, the reset structure 160 may be a spring or a spring. When the operator moves the operating member 4 in one direction so that the connecting member 131 moves along the axial direction, the reset structure 160 will be stretched. When the operator moves the operating member 4 in the opposite direction, the reset structure 160 may pull the connecting member 131 back to its original position to achieve the reset of the connecting member 131. In a more specific embodiment, the reset structure 160 may be set as a spring, and the driving member 132 may be inserted into the reset structure 160, which may further reduce the volume of the entire insertion part 1 and help increase the available space inside the insertion part 1.

[0072] Please also see Figure 4 and Figure 11, Continuing from the above, in this embodiment, the first pipe section 60 may have an active bending section. The insertion part 1 may further have a traction rope 20 and a sleeve 30. The sleeve 30 may be sleeved on the traction rope 20. It can be understood that when the insertion part 1 bends or rotates, elements inside the insertion part 1, such as the instrument pipe and the sleeve 30, will bend or rotate together. During this process, friction will occur between the sleeve 30 and other elements such as the instrument pipe. Therefore, setting the traction rope 20 inside the sleeve 30 can avoid or reduce the frictional force on the traction rope 20, and thus can reduce the possibility of damage to the traction rope 20.

[0073] It can be understood that when the insertion part 1 bends or rotates, the sleeve 30 and the traction rope 20 arranged inside the sleeve 30 will also be stretched. Therefore, in order to adapt to the influence of the insertion part 1 on the sleeve 30 during the bending process, the present application embodiment also provides a redundant part for the sleeve 30.

[0074] Specifically, the distal end of the sleeve 30 may be connected to the proximal end of the active bending section, and the distal end of the traction rope 20 may be connected to the distal end of the active bending section. And the sleeve 30 may be connected to the first pipe section 60 at the first connection part 310, and the sleeve 30 may be connected to the second pipe section 70 at the second connection part 320. The length of the sleeve 30 between the first connection part 310 and the second connection part 320 is the first dimension, and the sleeve 30 forms a redundant section at the connection of the first pipe section 60 and the second pipe section 70. That is to say, in this embodiment, providing a redundant section for the sleeve 30 enables the sleeve 30 to adapt to the change in length during the bending process of the insertion part 1.

[0075] In summary, for the insertion part 1 provided by the embodiment of the present application, the driving mechanism 130 is set to drive the first pipe section 60 to rotate relative to the second pipe section 70 around the axis of the distal end of the second pipe section 70. In the embodiment of the present application, since the second pipe section 70 is directly driven by the driving mechanism 130, the transmission path of the force for driving the second pipe section 70 to rotate is shorter. As a result, the process of the connecting member 131 driving the second pipe section 70 to rotate is more sensitive and more sufficient. It ensures that the endoscope 100 can perform precise, sensitive and sufficient rotation adjustment during the operation process, improves the accuracy and flexibility of inspection and treatment, and solves the problem in the prior art that the distal end of the insertion part 1 is difficult to rotate sufficiently when controlling the distal end of the insertion part 1 to turn by rotating the handle of the insertion part 1, which affects the smooth progress of the operation. Applying the above insertion part 1 to the endoscope 100 can also solve the above problems.

[0076] It should be noted that, in this document, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of additional identical elements in the process, method, article or device comprising such element.

[0077] In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, the features described with reference to certain examples may be combined in other examples.

[0078] As described above, the above are only specific embodiments 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 can easily think of changes or substitutions, which should be covered within the protection scope of the present invention.

Claims

1. An insertion part, characterized in that, Applied to an endoscope, the insertion portion includes a first tube section, a second tube section, and a driving mechanism. The proximal end of the first tube section is rotatably connected to the distal end of the second tube section. The driving mechanism is connected to the first tube section, and the driving mechanism can drive the first tube section to rotate relative to the second tube section around the axis of the distal end of the second tube section. The driving mechanism includes a connecting member. The first tube section is provided with a first structural member, and the second tube section is provided with a second structural member. The first structural member and the second structural member are nested and rotatably engaged. And, Among the first structural member and the second structural member, one has a first guiding structure arranged along the axial direction of the insertion portion, and the other has a second guiding structure arranged in a spiral around the axis of the insertion portion. The connecting member is respectively slidably engaged with the first guiding structure and the second guiding structure, and the connecting member can move axially along the insertion portion under the guidance of the first guiding structure and drive the second guiding structure to rotate relative to the first guiding structure.

2. The insertion part according to claim 1, characterized in that, The first guiding structure is a strip-shaped groove arranged along the axial direction of the insertion portion. At least part of the connecting member is located in the strip-shaped groove and is slidably engaged with the strip-shaped groove, and / or the second guiding structure is a spiral groove arranged in a spiral around the axis of the insertion portion. At least part of the connecting member is located in the spiral groove and is slidably engaged with the spiral groove.

3. The insertion part according to claim 1, characterized in that, The first structural member is separately provided from the first tube section. And / or, the second structural member is separately provided from the second tube section. And / or, the number of the first guiding structures is greater than or equal to two, and the first guiding structures are evenly distributed along the circumferential direction of the first structural member. And / or, the number of the second guiding structures is greater than or equal to two, and the second guiding structures are evenly distributed along the circumferential direction of the second structural member. And / or, the connecting member has a first connecting structure and a second connecting structure. The first connecting structure is connected to the first guiding structure and can be slidably engaged with the first guiding structure. The second connecting structure is connected to the second guiding structure and can be slidably engaged with the second guiding structure. And / or, the connecting member has a first connecting structure and a second connecting structure. The first connecting structure is connected to the first guiding structure and can be slidably engaged with the first guiding structure. The second connecting structure is connected to the second guiding structure and can be slidably engaged with the second guiding structure. And, the first connecting structure is threadedly connected to the connecting member, and / or the second connecting structure is threadedly connected to the connecting member. And / or, the first structural member is further provided with a limiting structure for restricting the axial movement of the second structural member. The end of the second structural member abuts against the limiting structure. And / or, the insertion portion further includes: a gasket, and the gasket is arranged between the limiting structure and the second structural member. And / or, the connecting member is a ring structure.

4. The insertion portion according to claim 1, wherein Alternatively, the first structural member is sleeved outside the second structural member, the second guiding structure penetrates through the tube wall of the second structural member, and at least part of the connecting member penetrates through the second guiding structure and is slidably engaged with the first guiding structure and the second guiding structure respectively; Alternatively, the second structural member is sleeved outside the first structural member, the first guiding structure penetrates through the tube wall of the first structural member, and at least part of the connecting member penetrates through the first guiding structure and is slidably engaged with the first guiding structure and the second guiding structure respectively; Alternatively, the connecting member is disposed between the first structural member and the second structural member.

5. The insertion part according to any one of claims 1-4, characterized in that, The driving mechanism further includes: a driving member, which is connected to the connecting member and is used to drive the connecting member to move along the axial direction of the insertion portion.

6. The insertion part according to claim 5, characterized in that The driving member includes: a pulling rope and a sleeve, the sleeve is sleeved on the pulling rope and is connected to the second pipe section, the pulling rope is slidably engaged with the sleeve, and the distal end of the pulling rope is connected to the connecting member; And / or, the driving mechanism further includes: a reset structure, one end of the reset structure is connected to the connecting member, the other end is connected to at least one of the first structural member and the second structural member, and the reset structure can drive the connecting member to move axially along the insertion portion; And / or, multiple groups of the driving members are provided, and multiple groups of the driving members are evenly connected to the connecting member.

7. The insertion part according to claim 6, characterized in that, The insertion portion further includes: a towing rope and a tube sleeve, the first pipe section has an active bending section, the tube sleeve is sleeved on the towing rope, and the distal end of the sleeve is connected to the proximal end of the active bending section, the distal end of the towing rope is connected to the distal end of the active bending section, the tube sleeve and the first pipe section are connected at a first connection portion, the sleeve and the second pipe section are connected at a second connection portion, the length of the sleeve between the first connection portion and the second connection portion is a first dimension, the distance between the first connection portion and the second connection portion is a second dimension, the first dimension is greater than the second dimension, and the sleeve forms a redundant portion at the connection of the first pipe section and the second pipe section.

8. An endoscope, characterized in that, Including the insertion portion according to any one of claims 1-7, the endoscope further includes a handle portion and an operating member disposed on the handle portion, the operating member is connected to the driving mechanism, and the operating member can drive the driving mechanism to drive the first pipe section to rotate relative to the second pipe section around the axis of the distal end of the second pipe section.

9. The endoscope according to claim 8, wherein, The operating member is disposed at the distal end of the handle portion.

Images