Insertion portion and endoscope

Abstract

The invention discloses an insertion part and an endoscope, and relates to the technical field of endoscopes. The insertion part comprises a first pipe section, a second pipe section and a driving mechanism, the near end of the first pipe section is rotationally connected with the far end of the second pipe section, the driving mechanism is connected with the first pipe section, and the driving mechanism can drive the first pipe section to rotate around the axis of the far end of the second pipe section relative to the second pipe section. The second pipe section is directly driven by the driving mechanism, so that the transmission path of the force for driving the second pipe section to rotate is shorter, and the process of driving the second pipe section to rotate by the connecting piece is more sensitive and more sufficient. The endoscope can be accurately, sensitively and fully rotated and adjusted in the operation process, the accuracy and flexibility of examination and treatment are improved, and the problems that in the prior art, the far end of the insertion part is difficult to fully rotate due to the fact that steering of the far end of the insertion part is controlled by rotating the insertion part of the handle, and smooth operation is affected are solved.

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 natural cavities (such as the mouth, nose, and anus) or tiny incisions to directly observe the internal conditions of internal organs and perform biopsy, hemostasis, resection and other operations.

[0003] During endoscopic-assisted stone removal surgery, 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.

[0004] In order to adapt to different spatial positions and observation angles, the surgeon usually relies on manual rotation of the handle insertion part or axial rotation of the distal insertion part. However, this method has a poor transmission effect when transmitting axial rotation to the distal end, which greatly affects the surgeon's flexibility and accuracy during surgical operations.

[0005] The above operation limitations are particularly obvious when dealing with a complex and tortuous structure such as the kidney. 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 is turned has always been an important challenge facing the field of endoscope-related technologies. 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] In order to solve the above problems, the present invention adopts the following technical solutions: On the one hand, an embodiment of the present application provides an insertion portion, which is applied to an endoscope, and 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.

[0009] On the other hand, an embodiment of the present application also provides an insertion part, including the above-mentioned insertion part, the endoscope also includes a handle part and an operating member arranged on the handle part, the operating member is connected to the driving mechanism, and the operating member can drive the driving mechanism to 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] The technical solution adopted by the present invention can achieve the following beneficial effects: The insertion part provided in the embodiment of the present application drives the first tube segment to rotate relative to the second tube segment around the axis of the distal end of the second tube segment by setting a driving mechanism. In the embodiment of the present application, since the second tube segment is directly driven by the driving mechanism, the transmission path of the force driving the second tube segment to rotate is shorter, thereby making the process of the connector driving the second tube segment to rotate more sensitive and more sufficient. It ensures that the endoscope can perform accurate, sensitive and sufficient rotation 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 part is difficult to fully rotate due to the insertion part controlling the distal end steering of the insertion part by rotating the handle, which affects the smooth progress of the operation. The above-mentioned problem can also be solved by applying the above-mentioned insertion part to the endoscope. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0012] Figure 1 A schematic structural diagram of an endoscope in one embodiment of the present application is shown.

[0013] Figure 2 A structural schematic diagram of another viewing angle of an endoscope in one embodiment of the present application is shown.

[0014] Figure 3 A schematic diagram showing a partial structure of an endoscope in an embodiment of the present application from another viewing angle.

[0015] Figure 4 A cross-sectional view of an endoscope in one embodiment of the present application is shown.

[0016] Figure 5 A schematic diagram showing the structure of an insertion portion in an embodiment of the present application is shown.

[0017] Figure 6 A partial structural schematic diagram of an insertion portion in an embodiment of the present application is shown.

[0018] Figure 7 An exploded view of a partial structure of an insertion portion in an embodiment of the present application is shown.

[0019] Figure 8 A cross-sectional view showing a partial structure of an insertion portion in an embodiment of the present application.

[0020] Fig. 9 An exploded view of a connector in an insert portion in an embodiment of the present application is shown.

[0021] Fig.10 An exploded view from another perspective of a connector in an insertion portion in an embodiment of the present application is shown.

[0022] Fig.11 for Figure 4 Enlarged view of point A in the middle.

[0023] 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 part; 320, second connecting part; 60, first pipe section; 70, second pipe section; 2, handle part; 3, housing; 4, operating member; 5, traction wheel; 100, endoscope. DETAILED DESCRIPTION

[0024] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0025] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0026] In each embodiment of the present application, "proximal end" and "distal end" refer to the position of each component relative to the user in the use environment, wherein the end closer to the user is designated as the "proximal end" and the end farther from the user is designated as the "distal end".

[0027] The inventive concept of the present application is described here: An endoscope is a medical optical instrument that enters the body through natural cavities (such as the mouth, nose, and anus) or tiny incisions to directly observe the internal conditions of internal organs and perform biopsy, hemostasis, resection and other operations.

[0028] During endoscopic-assisted stone removal surgery, 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.

[0029] In order to adapt to different spatial positions and observation angles, the surgeon usually relies on manual rotation of the handle insertion part or axial rotation of the distal insertion part. However, this method has a poor transmission effect when transmitting axial rotation to the distal end, which greatly affects the surgeon's flexibility and accuracy during surgical operations.

[0030] The above operation limitations are particularly obvious when dealing with a complex and tortuous structure such as the kidney. 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.

[0031] The inventors found that the root cause of the above reasons is: 1. When the operator rotates the proximal end of the insertion part of the operating handle, the insertion part is often bent, resulting in friction between the insertion part and the sheath, which makes it difficult to transmit the rotational force to the distal end of the insertion part.

[0032] 2. The force applied by the operator to the proximal end of the insertion part to rotate the distal end of the insertion part is too far away from the distal end of the insertion part, making it difficult to transmit the rotational force to the distal end of the insertion part.

[0033] Based on this, the inventor provides an insertion part, which can connect a driving mechanism 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, thereby realizing the turning of the snake bone segment.

[0034] The following is combined with Figures 1 to 11 , an insertion portion 1 and an endoscope 100 provided in the present application are described in detail through specific embodiments and their application scenarios.

[0035] See also Figure 1 An embodiment of the present application provides an endoscope 100. 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 rhinoscope, a stomatoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, etc. The embodiment of the present application does not specifically limit the type of the endoscope 100.

[0036] The endoscope 100 may include a handle portion 2 and an insertion portion 1 connected to each other. The handle portion 2 includes a housing 3, which may be used to accommodate other components such as an electronic module disposed in the handle portion 2, wherein the housing 3 may refer to the relevant structure in the prior art, which will not be described in detail herein.

[0037] Please also see 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.

[0038] The embodiment of the present application does not limit the specific form and structure of the first pipe segment 60 and the second pipe segment 70. For example, in one embodiment, one of the first pipe segment 60 and the second pipe segment 70 can be a cannula or a mounting pipe connected to the cannula, and the other can be a bent pipe.

[0039] Preferably, in the present embodiment, the first pipe segment 60 is a mounting tube, and the second pipe segment 70 is a bending tube. It is understandable that the hardness of the insertion tube is usually low, while the hardness of the mounting tube and the bending tube is high. Therefore, if the first pipe segment 60 is set as an insertion tube, it will be difficult to assemble. Therefore, the mounting tube and the bending tube with higher hardness are used as basic elements to assemble the first pipe segment 60 and the second pipe segment 70. In this way, in the actual production and assembly process, the first pipe segment 60 and the second pipe segment 70 can be assembled first, and then the first pipe segment 60 and the second pipe segment 70 can be installed with the insertion tube, which is conducive to reducing the difficulty of assembling the entire insertion part 1.

[0040] In this embodiment, the first pipe section 60 may be provided with a first structural member 110, and 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 rotationally matched. In a specific embodiment, the first structural member 110 may be a mounting tube, and the second structural member 120 may be a snake bone joint. It is worth noting that in this embodiment, the outer surface of the first structural member 110 may also be provided with a positioning structure 123, and the positioning structure 123 may be used to abut against the cannula. Based on the above, when the first pipe section 60 and the second pipe section 70 are assembled and assembled with the cannula, the cannula may be abutted against the positioning structure 123 to indicate that the assembled first pipe section 60 and the second pipe section 70 are assembled in place with the cannula.

[0041] In addition, the embodiment of the present application does not limit the arrangement of the first structural member 110 and the first pipe segment 60, nor does it limit the arrangement of the second structural member 120 and the second pipe segment 70. In one embodiment, the first structural member 110 can be integrally formed with the first pipe segment 60 or can be separately arranged, and similarly, the second structural member 120 can be integrally formed with the second pipe segment 70 or can be separately arranged, and the specific arrangement can be based on actual conditions.

[0042] As mentioned 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 guide structure 111 arranged axially along the insertion portion 1, and the other has a second guide structure 121 spirally arranged around the axis of the insertion portion 1, the connecting member 131 can be slidably matched with the first guide structure 111 and the second guide structure 121 respectively, and the connecting member 131 can move along the axial direction of the insertion portion 1 under the guidance of the first guide structure 111, and drive the second guide structure 121 to rotate relative to the first guide structure 111.

[0043] The embodiments of the present application also do not limit the specific forms of the first guide structure 111 and the second guide structure 121. For example, in one embodiment, the first guide structure 111 can be set to a hole or a groove, and the second guide structure 121 can also be set to a hole or a groove. The specific settings can be made according to actual conditions and are not limited here.

[0044] Moreover, in a preferred embodiment, the first guide structure 111 is configured not to pass through both ends of the first structural member 110, and the second guide structure 121 also does not pass through both ends of the second structural member 120, thereby preventing the connecting member 131 from falling off during the movement relative to the first structural member 110 and the second structural member 120.

[0045] In addition, the embodiment of the present application does not limit the number and arrangement of the first guide structures 111. For example, in one embodiment, the number of the first guide structures 111 can be set to be greater than or equal to two, and the first guide structures 111 can be evenly distributed along the circumferential direction of the first structural member 110, so that the contact area between the connecting member 131 and the first guide structure 111 is equal, and the contact position is more symmetrical, thereby facilitating the movement of the connecting member 131 relative to the first structural member 110. Similarly, the number of the second guide structures 121 can also be set to be greater than or equal to two, and the second guide structures 121 can also be evenly distributed along the circumferential direction of the second structural member 120. For details, please refer to the relevant description of the first guide structure 111, which will not be repeated here.

[0046] Please also see Figure 6-Figure 8In a specific embodiment, the first guide structure 111 is a strip groove arranged along the axial direction of the insertion part 1, and at least a part of the connecting member 131 is located in the strip groove and slides with the strip groove. The second guide structure 121 is a spiral groove arranged spirally around the axis of the insertion part 1, and at least a part of the connecting member 131 is located in the spiral groove and slides with the spiral groove.

[0047] Please also see Fig. 9 and Fig.10 The connecting member 131 may have a first connecting structure 310 and a second connecting structure 320 . The first connecting structure 310 may be used for sliding cooperation with the first guiding structure 111 , and the second connecting structure 320 may be used for sliding cooperation with the second guiding structure 121 .

[0048] The embodiment of the present application also does not limit the specific form and structure of the connecting member 131. For example, in the present embodiment, the connecting member 131 can be set as a ring structure, and the first connecting structure 133 and the second connecting 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 set according to actual conditions.

[0049] It should be noted that the embodiment of the present application does not limit the specific connection method between the first connection structure 133 and the connecting member 131, nor does it limit the specific connection method between the second connection structure 134 and the connecting member 131. Taking the connection method between the first connection structure 133 and the connecting member 131 as an example, the first connection structure 133 can be integrally formed with the connecting member 131, or it can be detachably arranged, such as threaded connection or clamping, etc., so that it is convenient to assemble the connecting member 131 with the first pipe section 60. It can be set specifically according to actual conditions. The connection method between the second connection structure 134 and the connecting frame can refer to the connection method between the first connection structure 133 and the connecting member 131, and will not be repeated here.

[0050] In this embodiment, the connecting member 131 can be configured such that when the connecting member 131 is subjected to an axial force, the connecting member 131 can move axially relative to the first structural member 110 and the second structural member 120, and can drive the second structural member 120 to rotate axially relative to the first structural member 110.

[0051] In this embodiment, in the process of driving the second structural member 120 to rotate, an axial force is directly applied to the connecting member 131, and then the connecting member 131 drives the second structural member 120 to rotate through its own axial movement. In this embodiment of the application, the transmission path of the force driving the second structural member 120 is shorter, so that the process of the connecting member 131 driving the second structural member 120 to rotate is more sensitive and more sufficient.

[0052] In addition, the embodiments of the present application do not limit the specific setting of the connecting member 131. For example, in one embodiment, the connecting member 131 can be set inside the first structural member 110 and the second structural member 120. For example, in another embodiment, the connecting member 131 can also be set between the first structural member 110 and the second structural member 120.

[0053] Please refer again Figure 8-Figure 10 , as mentioned above, in this embodiment, the connecting member 131 can be arranged inside the first structural member 110 and the second structural member 120, that is, in this embodiment, the first structural member 110, the second structural member 120 and the connecting member 131 are in a nested relationship. In this embodiment, the first structural member 110 and the second structural member 120 are the same element, the first guide structure 111 extends axially on the side wall of the first structural member, the second guide structure 121 extends threadedly on the side wall of the second structural member 120, and one of the first guide structure 111 and the second guide structure 121 located on the inner side is a hole, so that the first structural member 110 can pass through the first guide structure 111 or the second guide structure 121, and contact with the second guide structure 121 or the first guide structure 111, thereby facilitating the sliding cooperation between the first structural member 110 and the first guide structure 111 and the sliding cooperation between the first structural member 110 and the second guide structure 121.

[0054] That is to say, in this embodiment, the specific positions of the first structural member 110 and the second structural member 120 are also not limited. For example, in one embodiment, the first structural member 110 can be mounted outside the second structural member 120, and in another embodiment, the second structural member 120 can also be mounted outside the first structural member 110. The specific settings can be made according to actual conditions.

[0055] In this embodiment, when the connecting member 131 is subjected to a force in the axial direction, the connecting member 131 will move axially relative to the first structural member 110 and the second structural member 120, and since the second guide structure 121 opened on the side wall of the second structural member 120 is threaded, during the axial movement of the connecting member 131 relative to the second structural member 120, the second structural member 120 will be driven to rotate in the axial direction 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 rotate the second structural member 120, and thus in this embodiment, the force transmission path 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 precise and sensitive.

[0056] In addition, in another embodiment, the first guide structure 111 extends along the side wall thread of the first structural member 110, the second guide structure 121 also extends along the side wall thread of the second structural member 120, and the connecting member 131 can be arranged 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 guide structure 111 extends along the side wall thread of the first structural member 110, the connecting member 131 generates a torque for circumferential rotation 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. At this time, the force from the connecting member 131 on the second structural member 120 is a tangential force, which is a force used to drive the second structural member 120 to rotate relative to the first structural member 110 in the circumferential direction. Therefore, the second structural member 120 is not subjected to force in the axial direction, and thus the second structural member 120 does not move in the axial direction relative to the first structural member 110.

[0057] Please refer again Figure 8 In a specific embodiment, the first structural member 110 is also provided with a limiting structure 122 for limiting 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 at the same time during the axial movement.

[0058] It should be noted that the embodiment of the present application does not limit the specific form of the limiting structure 122. For example, in the present embodiment, the limiting structure 122 can be an annular step arranged in the first structural member 110. For example, in other embodiments, the limiting structure 122 can also be a plurality of block-shaped steps arranged in the first structural member 110, etc., which can be specifically limited according to actual conditions.

[0059] Considering that the first structural member 110 and the second structural member 120 are in direct contact with each other, a large friction force may be generated during the rotation of the second structural member 120 relative to the first structural member 110 in the circumferential direction, which may affect the rotation of the second structural member 120 relative to the first structural member 110. In addition, 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.

[0060] Therefore, please continue to read Figure 8In this embodiment, the insertion part 1 may further include a gasket 140, which may be disposed between the limiting structure 122 and the second structural member 120. The gasket 140 may reduce the friction coefficient between the second structural member 120 and the first structural member 110, thereby enabling the second structural member 120 to rotate more smoothly relative to the first structural member 110. At the same time, the gasket 140 may also protect the first structural member 110 and the second structural member 120.

[0061] It is understandable that in some other embodiments, the limiting structure 122 can also be set as a gasket 140, that is, in this embodiment, the gasket 140 can be integrally formed with the first structural member 110, which can reduce the volume of the entire insertion portion 1 to a certain extent.

[0062] See also Figure 5 In one embodiment, the driving mechanism 130 may further include: a driving member 132, which may be connected to the connecting member 131. The embodiment of the present application does not limit the specific form and structure of the driving member 132. For example, in one embodiment, the driving member 132 may be configured as a rope-like structure, so that the driving member 132 can be pulled by the operator and provide a force to 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 drawstring and a sleeve 30. The sleeve 30 may be sleeved on the drawstring and connected to the second pipe section 70. The drawstring and the sleeve 30 may be slidably matched, and the distal end of the drawstring is connected to the connecting member 131.

[0063] The embodiment of the present application does not limit the number and connection position of the driving members 132. For example, in one embodiment, the driving members 132 may be provided in multiple groups, and 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 provided 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 on 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 even.

[0064] Please also refer to Figure 2 , Figure 3 and Figure 5 In the present embodiment, the driving member 132 may extend to the handle portion 2, and in the present embodiment, the handle portion 2 may also be provided with an operating member 4, which may be used to be connected to the driving mechanism 130, and specifically connected to the driving member 132, and may be used for the operator to turn it to apply a force to the driving member 132 to cause the driving member 132 to move in an axial direction, so as to drive the driving member 132 to 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] Please also see Figure 4 and Fig.11As mentioned above, in the present embodiment, the first tube section 60 may have an active bending section, and the insertion portion 1 may also have a traction rope 20 and a sleeve 30, and the sleeve 30 may be sleeved on the traction rope 20. It can be understood that, as the insertion portion 1 bends or rotates, the components located inside the insertion portion 1, such as the instrument tube, the sleeve 30, etc., will bend or rotate together. During this process, the sleeve 30 will cause friction with other components such as the instrument tube. Therefore, setting the traction rope 20 in the sleeve 30 can avoid or reduce the friction on the traction rope 20, thereby reducing the possibility of damage to the traction rope 20.

[0069] It is understandable that during the bending or rotation of the insertion part 1, the sleeve 30 and the traction rope 20 disposed in the sleeve 30 will also be stretched. Therefore, in order to adapt to the impact of the insertion part 1 on the sleeve 30 during the bending process, the embodiment of the present application also provides a redundant part for the sleeve 30.

[0070] Specifically, the distal end of the sleeve 30 can be connected to the proximal end of the active bending section, and the distal end of the traction rope 20 can be connected to the distal end of the active bending section. In addition, the sleeve 30 can be connected to the first pipe section 60 at the first connecting portion 310, and the sleeve 30 can be connected to the second pipe section 70 at the second connecting portion 320. The length of the sleeve 30 between the first connecting portion 310 and the second connecting portion 320 is a first size, and the sleeve 30 forms a redundant section at the connection between the first pipe section 60 and the second pipe section 70. That is, in this embodiment, the redundant section of the sleeve 30 can enable the sleeve 30 to adapt to the change in length of the insertion portion 1 during the bending process.

[0071] In summary, the insertion portion 1 provided in the embodiment of the present application drives 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 by setting a driving mechanism 130. In the embodiment of the present application, since the second tube segment 70 is directly driven by the driving mechanism 130, the transmission path of the force driving the second tube segment 70 to rotate is shorter, thereby making the process of the connector 131 driving the second tube segment 70 to rotate more sensitive and more sufficient. It ensures that the endoscope 100 can perform accurate, sensitive and sufficient rotation 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 1 is difficult to fully rotate due to the insertion portion 1 controlling the distal end of the insertion portion 1 by rotating the handle, which affects the smooth progress of the operation. The above-mentioned problem can also be solved by applying the above-mentioned insertion portion 1 to the endoscope 100.

[0072] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0073] In addition, it should be noted 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 a reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

[0074] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An insertion portion, characterized in that: 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 pipe segment, and the driving mechanism can drive the first pipe segment to rotate relative to the second pipe segment around the axis of the distal end of the second pipe segment.

2. The insertion portion according to claim 1, characterized in that: The driving mechanism comprises a connecting member, the first pipe section is provided with a first structural member, the second pipe section is provided with a second structural member, the first structural member and the second structural member are nested and rotationally matched, 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 part, and the other has a second guiding structure spirally arranged around the axis of the insertion part. The connecting member slides with the first guiding structure and the second guiding structure respectively, and the connecting member can move along the axial direction of the insertion part under the guidance of the first guiding structure, and drive the second guiding structure to rotate relative to the first guiding structure.

3. The insertion portion according to claim 2, characterized in that: The first guiding structure is a strip groove arranged axially along the insertion part, at least a portion of the connecting member is located in the strip groove and slidingly cooperates with the strip groove, and / or the second guiding structure is a spiral groove arranged spirally around the axis of the insertion part, at least a portion of the connecting member is located in the spiral groove and slidingly cooperates with the spiral groove.

4. The insertion portion according to claim 2, characterized in that: The first structural member and the first pipe section are separately arranged. And / or, the second structural member and the second pipe section are separately provided; 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 matched with the first guiding structure, and the second connecting structure is connected to the second guiding structure and can be slidably matched 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 matched with the first guiding structure, the second connecting structure is connected to the second guiding structure and can be slidably matched 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 limiting the axial movement of the second structural member, and an end of the second structural member abuts against the limiting structure; And / or, the inserting portion further comprises: a gasket, the gasket being arranged between the limiting structure and the second structural member; And / or, the connecting piece is a ring structure.

5. The insertion portion according to claim 2, characterized in that: Or, the first structural member is sleeved outside the second structural member, the second guide structure penetrates the tube wall of the second structural member, and at least a portion of the connecting member penetrates the second guide structure and slides with the first guide structure and the second guide structure respectively; Or, the second structural member is sleeved outside the first structural member, the first guide structure penetrates the tube wall of the first structural member, and at least a portion of the connecting member penetrates the first guide structure and slides with the first guide structure and the second guide structure respectively; Alternatively, the connecting member is disposed between the first structural member and the second structural member.

6. The insertion portion according to any one of claims 2 to 5, 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.

7. The insertion portion according to claim 6, characterized in that The driving member comprises: a pull rope and a sleeve, wherein the sleeve is sleeved on the pull rope and connected to the second pipe section, the pull rope is slidably matched with the sleeve, and the distal end of the pull rope is connected to the connecting member; And / or, the driving mechanism further comprises: a reset structure, one end of which is connected to the connecting member, and the other end of which 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 along the axial direction of the insertion portion; And / or, the driving members are provided in multiple groups, and the multiple groups of driving members are evenly connected to the connecting members.

8. The insertion portion according to claim 7, characterized in that: The insertion part also includes: a traction rope and a sleeve, the first tube segment has an active bending segment, the sleeve is sleeved on the traction rope, and the distal end of the sleeve is connected to the proximal end of the active bending segment, the distal end of the traction rope is connected to the distal end of the active bending segment, the sleeve and the first tube segment are connected at a first connecting part, the sleeve and the second tube segment are connected at a second connecting part, the length of the sleeve between the first connecting part and the second connecting part is a first size, the distance between the first connecting part and the second connecting part is a second size, the first size is greater than the second size, and the sleeve forms a redundant part at the connection between the first tube segment and the second tube segment.

9. An endoscope, characterized in that: The endoscope comprises an insertion portion as described in any one of claims 1 to 8, and further comprises a handle portion and an operating member arranged on the handle portion, wherein the operating member is connected to the driving mechanism, and the operating member can drive the driving mechanism to 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.

10. The endoscope according to claim 9, characterized in that The operating member is arranged at the distal end of the handle portion.

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