Endoscope guiding device and endoscope

Abstract

The present invention relates to the technical field of endoscopes, and in particular to an endoscope guiding device and an endoscope, comprising a guiding member, wherein a working channel for placing an endoscope insertion portion is provided in the guiding member, a controllable bending section is provided at the distal end of the guiding member, the rigidity of the controllable bending section in a first plane is less than the rigidity of the controllable bending section in a second plane, the first plane and the second plane are different planes passing through a rotation axis, and a connecting structure is provided on the guiding member. The present invention can not only meet the requirement of being able to quickly and accurately extend into a target position through an operation area opening, but also increase the observation and operation space of the endoscope insertion portion at the target position, reduce the number of operation area openings required for a complete operation, improve the efficiency of minimally invasive surgery, and reduce the pain and damage of patients; and a guiding device can adapt to multiple endoscope insertion portions of different sizes, effectively improving the convenience of using the device.

Description

Technical Field

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

[0002] As an important medical device in modern minimally invasive surgery, the operator can insert the endoscope into the human body to detect and operate the human body cavity environment. At the same time, by operating the endoscope handle located outside the human body, the bending angle of the active bending part at the front end of the insertion part can be adjusted, so that it can be deflected in a predetermined direction, helping people obtain a larger observation and operation space.

[0003] Existing endoscopic technology can be inserted into the human body through natural channels or surgical openings. When using the surgical opening method, in order to ensure that the endoscope insertion part can be quickly and accurately inserted into the target position, a guide sheath is required to guide the endoscope insertion part. In the process of realizing the present invention, the applicant found that since the guide sheath needs to maintain a certain rigidity to constrain the endoscope insertion part to ensure that the endoscope insertion part can be quickly and accurately inserted into the target position, the observation and operation space corresponding to a single surgical opening is small. Therefore, in actual application, multiple surgical openings are generally required to achieve complete observation or operation of the human body cavity. Opening multiple surgical openings will cause the operation to take a long time and cause great damage to the human body. Summary of the Invention

[0004] The purpose of this application is to provide an endoscope guiding device and an endoscope to solve the above technical problems existing in the prior art, mainly including the following two aspects:

[0005] In a first aspect, the present application provides a guiding device for an endoscope, comprising a guiding member, wherein a working channel for placing an insertion portion of an endoscope is provided in the guiding member, a controllable bending section is provided at the distal end of the guiding member, and the stiffness of the controllable bending section in a first plane is less than the stiffness of the controllable bending section in a second plane, so as to achieve coordinated bending of the controllable bending section with bending deformation of the insertion portion of the endoscope occurring in the first plane, and constraint of the controllable bending section with bending deformation of the insertion portion of the endoscope occurring in the second plane, wherein the first plane and the second plane are different planes passing through a rotation axis, and a connecting structure is provided on the guiding member, wherein the connecting structure is used to achieve a rotational connection between the guiding member and the insertion portion of the endoscope, and the guiding member rotates around the rotation axis.

[0006] Furthermore, a sliding groove is provided on the inner wall of the guide member, and the connecting structure includes a sliding member that cooperates with the sliding groove, and the sliding member is detachably connected to the endoscope insertion portion.

[0007] Furthermore, the sliding groove is an arc-shaped or annular structure.

[0008] Furthermore, the arc corresponding to the sliding stroke of the sliding member in the sliding groove is 90°, and the first plane and the second plane are arranged perpendicular to each other.

[0009] Furthermore, the connection structure further includes a limiting member, which is connected to the guiding member and is used to constrain the sliding stroke of the sliding member in the sliding groove.

[0010] Furthermore, the guide member is provided with a drainage channel arranged along the axial direction of the guide member.

[0011] Furthermore, a drainage interface is provided on the proximal peripheral wall of the guide member, and the drainage interface is communicated with the drainage channel.

[0012] Furthermore, a plurality of notches are provided on the peripheral wall of the controllable bending section, and the notches are arranged in sequence along the axial direction of the guide member, and the notches pass through the first plane.

[0013] Furthermore, the guide member includes an inner tube body and an outer tube body which are sequentially arranged from the inside to the outside, the working channel is arranged in the inner tube body, and the drainage channel is arranged between the inner tube body and the outer tube body.

[0014] Furthermore, a reinforcing rib is provided between the inner tube body and the outer tube body, and in the cross section of the guide member, the reinforcing rib is staggered with the notch.

[0015] Furthermore, the reinforcing ribs are arranged corresponding to the second plane.

[0016] Furthermore, the notch is communicated with the drainage channel.

[0017] Furthermore, a sliding groove is provided at the proximal end of the guide member, and the connecting structure includes a sliding member that cooperates with the sliding groove, and the sliding member is detachably connected to the endoscope handle and / or the insertion portion.

[0018] The second aspect of the present application provides an endoscope, comprising an endoscope handle, an endoscope insertion portion, and the above-mentioned guiding device, wherein the proximal end of the endoscope insertion portion is connected to the distal end of the endoscope handle, and the endoscope insertion portion includes an active bending section located at the distal end, and the active bending section is at least partially arranged to correspond to the controllable bending section.

[0019] Compared with the prior art, the present invention has at least the following technical effects:

[0020] The present invention provides a guide member capable of rotating relative to the endoscope insertion part, so that after the guide device is rotated, in the first state, the controllable bending section limits the active bending section of the endoscope insertion part, so that the guide device and the endoscope insertion part generally maintain a certain rigidity during the insertion process, so as to ensure that they can be quickly and accurately inserted into the target position through the surgical area opening; and in the second state of the guide device after rotation, the controllable bending section of the guide member can also follow the active bending section to produce adaptive directional bending, thereby effectively increasing the observation and operation space of the endoscope insertion part at the target position, and increasing the endoscope observation and operation space corresponding to a single surgical area opening, thereby effectively reducing the number of surgical area openings required to perform a complete operation, improving the efficiency of minimally invasive surgery, and reducing patient pain and damage; and one guide device can be adapted and installed for use of multiple endoscope insertion parts of different sizes, thereby improving the convenience of using the guide device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention or the description of the prior art. 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 any creative work.

[0022] Figure 1 It is a schematic structural diagram of the guiding device of the present invention;

[0023] Figure 2 is a front view of the guiding device of the present invention;

[0024] Figure 3 yes Figure 2 AA section view in the figure;

[0025] Figure 4 It is a schematic diagram of the internal structure of the guiding device of the present invention;

[0026] Figure 5 It is a schematic structural diagram of the endoscope of the present invention;

[0027] Figure 6 2. It is a schematic structural diagram of the endoscope of the present invention (when the guiding device is separated from the insertion portion of the endoscope, the second plane corresponds to the third plane);

[0028] Figure 7 2. It is a schematic structural diagram of the endoscope of the present invention (when the guiding device is separated from the insertion portion of the endoscope, the first plane corresponds to the third plane);

[0029] Figure 8 Schematic diagram of the guiding device of the present invention cooperating with the insertion portion of the endoscope to produce adaptive bending deformation;

[0030] In the figure,

[0031] 10. Guiding device; 100. Guide member; 110. Controllable bending section; 111. Notch; 121. Inner tube body; 122. Outer tube body; 123. Reinforcement rib; 130. Working channel; 140. Drainage channel; 150. Drainage interface; 161. First plane; 162. Second plane; 171. Sliding groove; 172. Sliding member; 20. Endoscope handle; 30. Endoscope insertion part; 310. Active bending section; 311. Connection point. DETAILED DESCRIPTION

[0032] The following description provides many different embodiments or examples for implementing different features of the present invention. The components and arrangements described in the following specific examples are only used to simplify the present invention and are only used as examples, not to limit the present invention.

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention for which protection is sought, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] In the present invention, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood broadly. For example, they can refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and they can refer to internal connectivity between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances. Furthermore, terms such as "first," "second," and "third" are used solely for descriptive purposes and are not to be construed as indicating or implying relative importance.

[0035] In the present invention, unless otherwise expressly specified or limited, a first feature being above or below a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] In addition, in the present invention, "proximal" and "distal" refer to the far and near positions of the structure relative to the human body in the use environment, so as to facilitate the description of the positional relationship between components and facilitate understanding; for the same component, "proximal" and "distal" are the relative positional relationship of the component, not absolute; therefore, it should be understood from the perspective of realizing the principles of the present invention, and should not deviate from the essence of the present invention.

[0037] Example 1:

[0038] The present application embodiment provides an endoscope guiding device 10, such as Figures 1 to 4 As shown, it includes a guide member 100, in which a working channel 130 for accommodating an endoscope insertion portion 30 is provided, and a controllable bending section 110 is provided at the distal end of the guide member 100, and the stiffness of the controllable bending section 110 in the first plane 161 is less than the stiffness of the controllable bending section 110 in the second plane 162, so as to realize the coordinated bending of the controllable bending section 110 with the bending deformation of the endoscope insertion portion 30 occurring on the first plane 161, and the constraint of the controllable bending section 110 on the bending deformation of the endoscope insertion portion 30 occurring on the second plane 162, the first plane 161 and the second plane 162 are different planes passing through the rotation axis, and the guide member 100 is provided with a connecting structure, which is used to realize the rotational connection between the guide member 100 and the endoscope insertion portion 30, and the guide member 100 rotates around the rotation axis.

[0039] Existing endoscopic technology can be inserted into the human body through natural channels or surgical openings. However, when using the surgical opening method, since the endoscope insertion part 30 is relatively soft and easy to bend, in order to ensure that the endoscope insertion part 30 can be quickly and accurately inserted into the target position, it is necessary to use a guide sheath to guide the endoscope insertion part 30, and use the rigidity of the guide sheath to constrain the endoscope insertion part 30 to prevent the endoscope insertion part 30 from bending during the deepening process, thereby ensuring that the endoscope insertion part 30 can be quickly and accurately inserted into the target position. At the same time, since the human body cavity space is small and complex, the endoscope insertion part 30 is actually in a confined space at the target position, and the endoscope insertion part 30 also needs to extend the guide sheath to produce bending deformation. Therefore, the observation and operation space corresponding to a single surgical opening is small. Therefore, in actual application, in order to ensure the complete implementation of the operation, multiple surgical openings are generally required to achieve complete observation of the human body cavity. Or operation, and opening multiple surgical openings will cause the operation to take longer time and increase the damage to the human body; in this embodiment, the structure of the guide member 100 is improved so that the guide member 100 can rotate relative to the endoscope insertion part 30 to realize the rotation of the guide member 100 around the rotation axis. Since the active bending section 310 of the endoscope insertion part 30 is generally controlled by the traction ropes on both sides to control the active bending section 310 to be directional bent on the third plane, for the fourth plane that is perpendicular to the third plane and intersects with the central axis of the active bending section 310, it is difficult for the active bending section 310 to bend and deform on the fourth plane. Therefore, during use, after opening a surgical opening, the guide member 100 is rotated to make the second plane 162 of the controllable bending section 110 correspond to the third plane of the active bending section 310. Preferably, the second plane 162 of the controllable bending section 110 coincides with the third plane of the active bending section 310, as shown in FIG. Figure 7 As shown, the controllable bending section 110 is used to limit the active bending section 310 of the endoscope insertion part 30, and the bending deformation of the endoscope insertion part 30 on the second plane 162 is constrained to avoid it from undergoing a large bending deformation. Generally, the guide member 100 and the endoscope insertion part 30 maintain a certain rigidity during the insertion process, so as to ensure that they can be quickly and accurately inserted into the target position through the surgical opening. After the guide member 100 and the endoscope insertion part 30 are inserted into the target position of the human body cavity, the guide member 100 is rotated so that the first plane 161 of the guide member 100 corresponds to the third plane of the active bending section 310. Preferably, the first plane 161 of the controllable bending section 110 coincides with the third plane of the active bending section 310, as shown in FIG. Figure 6As shown, when the active bending section 310 of the endoscope insertion part 30 is controlled by the traction rope to perform directional bending in the third plane, the controllable bending section 110 of the guide 100 can also follow the active bending section 310 to produce adaptive directional bending, thereby effectively increasing the observation and operation space of the endoscope insertion part 30 at the target position, and increasing the endoscopic observation and operation space corresponding to a single surgical opening, thereby effectively reducing the number of surgical openings required to perform a complete operation, improving the efficiency of minimally invasive surgery, and reducing patient pain and injury; in addition, by providing a connection structure for rotatably connecting with the endoscope insertion part 30 on the guide 100, one guiding device 10 can be adapted to multiple endoscope insertion parts 30 of different lengths and sizes, so as to ensure that during the installation process, the controllable bending section 110 can always correspond to the active bending section 310, thereby improving the ease of use of the guiding device 10. For example, when the guiding device 10 is designed to be ten units in length, for an endoscope insertion part 30 with a length of ten units When the endoscope insertion portion 30 passes through the guiding device 10, the guiding device 10 is directly abutted against the endoscope handle 20, so that the controllable bending section 110 and the active bending section 310 can be ensured to correspond; when the guiding device 10 is designed to be ten units long, for when the endoscope insertion portion 30 is fifteen units long, when the endoscope insertion portion 30 passes through the guiding device 10, the distal end of the endoscope insertion portion 30 is directly flush with the distal end of the guiding device 10, so that the controllable bending section 110 and the active bending section 310 can be ensured to correspond to each other. 110 corresponds to the active bending section 310, the controllable bending section 110 can be controlled to correspond to the active bending section 310; similarly, for the case where the length of the endoscope insertion part 30 is more than ten units, the distal end of the endoscope insertion part 30 can be made flush with the distal end of the guiding device 10 during the process of the endoscope insertion part 30 passing through the guiding device 10, so as to realize the correspondence between the controllable bending section 110 and the active bending section 310, thereby ensuring that the guiding device 10 can adjust the stiffness state of the endoscope insertion part 30.

[0040] Specifically, if Figure 3As shown, the first plane 161 and the second plane 162 are perpendicular to each other. Since the third plane and the fourth plane of the active bending section 310 of the endoscope insertion portion 30 are arranged perpendicular to each other, when the guide member 100 is rotated to make the second plane 162 of the controllable bending section 110 correspond to the third plane of the active bending section 310 (first state), the first plane 161 of the controllable bending section 110 is synchronously corresponding to the fourth plane of the active bending section 310. Then, when the second plane 162 of the controllable bending section 110 constrains the active bending section 310 to bend, the fourth plane of the active bending section 310 also constrains the first plane 161 of the controllable bending section 110 to bend. In other words, the controllable bending section 110 and the active bending section 310 constrain each other. Approximately, the rigidity of the guide member 100 and the endoscope insertion part 30 during the insertion process is further improved, ensuring that the insertion process is stable and accurate; and when the guide member 100 is rotated to make the first plane 161 of the controllable bending section 110 correspond to the third plane of the active bending section 310 (the second state), the second plane 162 of the controllable bending section 110 is synchronously corresponding to the fourth plane of the active bending section 310, and then when the controllable bending section 110 follows the active bending section 310 to generate an adaptive directional bending deformation, the fourth plane of the active bending section 310 will not constrain the bending deformation, that is, the controllable bending section 110 and the active bending section 310 can synchronously generate directional bending under the drive of the traction rope, thereby improving the range of motion of the endoscope insertion part in a confined space.

[0041] In some embodiments, the first plane 161 and the second plane 162 do not need to be set to a mutually perpendicular structure, and the state switching of the guiding device 10 can also be achieved.

[0042] Specifically, the guide member 100 is further provided with a drainage channel 140 arranged along the axial direction of the guide member 100. After the endoscope insertion portion 30 is guided and extended into the target location of the human body using the guide device 10, a functional fluid can be sprayed toward the target location of the human body cavity through the instrument tube of the endoscope insertion portion 30, acting on the target location of the human body cavity. The functional fluid is then recovered using the drainage channel 140 to prevent the functional fluid from being retained in the human body cavity. It should be noted that the functional fluid can be a gas, a liquid, a solid particle, or a combination thereof, and specifically can be a gaseous medical agent, a liquid medical agent, or a solid particle medical agent.

[0043] In some embodiments, the drainage channel 140 may be used to deliver the functional fluid to a target location in the human body cavity, and then the instrument tube of the endoscope insertion portion 30 may be used for recovery or sample collection.

[0044] Specifically, a drainage interface 150 is provided on the proximal peripheral wall of the guide member 100, and the drainage interface 150 is in communication with the drainage channel 140. When the drainage channel 140 is used to collect functional fluids or samples, the drainage interface 150 can be connected to a negative pressure device, which is used to drive and reduce the pressure at the drainage interface 150, thereby forming a pressure differential across the drainage channel 140. Under the action of the pressure differential, the functional fluid or sample is collected through the drainage channel 140.

[0045] In some embodiments, the drainage interface 150 may also be provided on the endoscope handle 20 so that the drainage interface 150 is connected to the drainage channel 140 through a pipe.

[0046] Specifically, a plurality of notches 111 are provided on the peripheral wall of the controllable bending section 110. The notches 111 are sequentially arranged along the axial direction of the guide member 100, and the notches 111 pass through the first plane 161. The provision of the notches 111 increases the elastic modulus of the controllable bending section 110 in the first plane 161, allowing the controllable bending section 110 to more easily cooperate with the active bending section 310 in generating directional bending deformation in the first plane 161.

[0047] Specifically, the guide member 100 includes an inner tube body 121 and an outer tube body 122, which are arranged sequentially from the inside out. The working channel 130 is disposed in the inner tube body 121, and the drainage channel 140 is disposed between the inner tube body 121 and the outer tube body 122. By arranging the drainage channel 140 between the inner tube body 121 and the outer tube body 122, the drainage channel 140 and the endoscope insertion portion 30 are effectively isolated, reducing interference with the normal use of the endoscope insertion portion 30 by the drainage channel 140, improving the stability and safety of the device, and facilitating the collection of functional fluids or samples by the drainage channel 140.

[0048] In some embodiments, the guide member 100 can also be configured to include a left tube body and a right tube body arranged parallel to each other, the working channel 130 is arranged in the left tube body along the length direction of the left tube body, and the drainage channel 140 is arranged in the right tube body along the length direction of the right tube body, so as to further isolate the working channel 130 and the drainage channel 140.

[0049] Specifically, a reinforcing rib 123 is disposed between the inner tube 121 and the outer tube 122. On the cross-section of the guide member 100, the reinforcing rib 123 is offset from the notch 111. The reinforcing rib 123 further increases the rigidity of the guide device 10 during insertion into a human body cavity, ensuring that the endoscope insertion portion 30 can be quickly and accurately inserted into the target position. Furthermore, offsetting the reinforcing rib 123 from the notch 111 on the cross-section of the guide member 100 reduces the resistance of the reinforcing rib 123 to the adaptive directional bending of the controllable bending section 110 and strengthens the constraint on the bending deformation of the endoscope insertion portion 30 occurring on the second plane 162 by the controllable bending section 110, thereby improving the ease of use of the device.

[0050] Specifically, the reinforcing ribs 123 are arranged corresponding to the second plane 162 . In some embodiments, the reinforcing ribs 123 are preferably arranged on the second plane 162 , or the reinforcing ribs 123 may be arranged roughly corresponding to the second plane 162 .

[0051] In some embodiments, the notch 111 is connected to the drainage channel 140. To increase the amount of functional fluid or sample collected by the drainage channel 140 and the effective collection area, the notch 11 can be configured to be connected to the drainage channel 140, allowing the functional fluid or sample in the human body cavity to enter the drainage channel 140 through the notch 111, thereby effectively increasing the amount of functional fluid or sample collected per unit time and the effective collection area.

[0052] Specifically, a sliding groove 171 is provided at the proximal end of the guide member 100 , and the connection structure includes a sliding member 172 that cooperates with the sliding groove 171 , and the sliding member 172 is detachably connected to the endoscope handle 20 .

[0053] In some embodiments, the sliding groove 171 is an arc-shaped structure, and the sliding stroke of the sliding member 172 in the sliding groove 171 corresponds to an arc of 90°, and the first plane 161 and the second plane 162 are perpendicular to each other, and the third plane and the fourth plane of the active bending section 310 of the endoscope insertion portion 30 are perpendicular to each other. At the end point of the first sliding stroke, the second plane 162 of the controllable bending section 110 corresponds to the third plane of the active bending section 310, and the first plane 161 of the controllable bending section 110 corresponds to the fourth plane of the active bending section 310, and then at the first sliding stroke, The controllable bending section 110 and the active bending section 310 at the end point restrain each other to maintain rigidity; when the guide member 100 is rotated to rotate the sliding member 172 to the second end point of the sliding stroke, the first plane 161 of the controllable bending section 110 corresponds to the third plane of the active bending section 310, and at the same time, the second plane 162 of the controllable bending section 110 corresponds to the fourth plane of the active bending section 310, so that the controllable bending section 110 follows the active bending section 310 to produce adaptive directional bending deformation, thereby ensuring accurate control and positioning of the rotation position of the guide member 100 and improving the convenience and safety of equipment use.

[0054] In some embodiments, the sliding groove 171 can also be provided with an annular structure. In addition, in order to ensure accurate control and positioning of the rotational position of the guide member 100, a limiter can be added to limit the sliding stroke of the sliding member 172 in the sliding groove 171 to an arc of 90°. The limiter can be a stop block provided in the sliding groove 171, or it can be a stop block connected to the proximal end of the guide member 100 and partially corresponding to the sliding groove 171. No specific limitation is made here.

[0055] In some embodiments, the sliding groove 171 and the sliding member 172 can also be set as an annular structure. At the same time, in order to ensure accurate control and positioning of the rotation position of the guide member 100, a limit member can be added to limit the sliding stroke of the sliding member 172 in the sliding groove 171 to an arc of 90°.

[0056] In some embodiments, the slider 172 may be detachably connected to the endoscope insertion portion 30 .

[0057] It should be noted that when the sliding member 172 is detachably connected to the endoscope handle 20 and / or the endoscope insertion part 30, the detachable connection is a prior art, and can specifically be a threaded connection, a snap connection, an interference fit or a slide rail fit connection, which is not specifically limited here.

[0058] In some embodiments, the controllable bending section 110 can be made of the same material and the thickness of the peripheral wall close to the first plane 161 can be greater than the thickness of the peripheral wall close to the second plane 162, so that the elastic modulus of the controllable bending section 110 in the first plane 161 is greater than the elastic modulus of the controllable bending section 110 in the second plane 162; the material of the peripheral wall of the controllable bending section close to the first plane and the material of the peripheral wall of the controllable bending section close to the second plane can also be set to be different, so that the elastic modulus of the controllable bending section 110 in the first plane 161 is greater than the elastic modulus of the controllable bending section 110 in the second plane 162.

[0059] Example 2:

[0060] The present application embodiment provides an endoscope, such as Figure 5 As shown, it includes an endoscope handle 20, an endoscope insertion part 30, and the guiding device 10 in Example 1, the proximal end of the endoscope insertion part 30 is connected to the distal end of the endoscope handle 20, and the endoscope insertion part 30 includes an active bending section 310 located at the distal end, and the active bending section 310 is at least partially arranged to correspond to the controllable bending section 110. During use, after the surgical opening is opened, the guide member 100 is rotated to make the second plane 162 of the controllable bending section 110 correspond to the third plane of the active bending section 310. When the second plane 162 of the controllable bending section 110 is used to constrain the bending deformation of the active bending section 310, it is ensured that the guiding device 10 and the endoscope insertion part 30 can be quickly and accurately extended into the target position of the human body cavity through the surgical opening; after the endoscope insertion part 30 reaches the target position of the human body cavity, the guide member 100 is rotated to make the first plane 161 of the controllable bending section 110 correspond to the third plane of the active bending section 310, so that the controllable bending section 110 can follow the active bending section 310 to produce adaptive directional bending deformation. At this time, the operator can use the endoscope handle 20 to drive the traction rope (the technology and structure of using the endoscope handle to drive the traction rope are existing technologies and will not be elaborated here) to drive the active bending section 310 to produce directional bending deformation, and the controllable bending section 110 can cooperate with the active bending section 310 to synchronously produce directional bending under the drive of the traction rope, thereby effectively improving the range of movement of the endoscope insertion part 30 in a confined space, increasing the observation and operation space of the endoscope insertion part 30 at the target position, and increasing the endoscope observation and operation space corresponding to a single surgical area opening, thereby effectively reducing the number of surgical area openings required to perform a complete operation, improving the efficiency of minimally invasive surgery, and reducing patient pain and injury.

[0061] Specifically, the active bending section 310 is a serpentine structure including multiple serpentine units, and the connection points 311 between the traction rope and adjacent serpentine units are set correspondingly, that is, the connection points 311 between the serpentine units are set correspondingly to the fourth plane, thereby preventing the active bending section 310 from bending and deforming on the fourth plane.

[0062] It should be noted that the endoscope in the embodiments of the present application 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 embodiments of the present application do not impose any specific restrictions on the type of endoscope.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A guiding device for an endoscope, characterized in that: The invention comprises a guide member (100), wherein a working channel (130) for accommodating an endoscope insertion portion (30) is arranged in the guide member (100), and a controllable bending section (110) is arranged at the distal end of the guide member (100), wherein the rigidity of the controllable bending section (110) in a first plane (161) is smaller than the rigidity of the controllable bending section (110) in a second plane (162), so as to realize that the controllable bending section (110) can control the endoscope insertion portion (30) in the first plane (161). ), and the controllable bending section (110) constrains the bending deformation of the endoscope insertion part (30) on the second plane (162), the first plane (161) and the second plane (162) are different planes passing through the rotation axis, and a connecting structure is provided on the guide member (100), and the connecting structure is used to realize the rotation connection between the guide member (100) and the endoscope insertion part (30), and the guide member (100) rotates around the rotation axis.

2. The guiding device according to claim 1, characterized in that: A sliding groove (171) is provided on the inner wall of the guide member (100), and the connection structure comprises a sliding member (172) matched with the sliding groove (171), and the sliding member (172) is detachably connected to the endoscope insertion part (30).

3. The guiding device according to claim 2, characterized in that: The sliding groove (171) is an arc-shaped or annular structure.

4. The guiding device according to claim 3, characterized in that: The sliding stroke of the sliding member (172) in the sliding groove (171) corresponds to an arc of 90°, and the first plane (161) and the second plane (162) are arranged perpendicular to each other.

5. The guiding device according to claim 4, characterized in that: The connection structure further comprises a limiting member, which is connected to the guide member (100) and is used to restrict the sliding stroke of the sliding member (172) in the sliding groove (171).

6. The guiding device according to any one of claims 1 to 5, characterized in that: The guide member (100) is also provided with a drainage channel (140) arranged along the axial direction of the guide member (100).

7. The guiding device according to claim 6, characterized in that: A drainage interface (150) is provided on the proximal peripheral wall of the guide member (100), and the drainage interface (150) is communicated with the drainage channel (140).

8. The guiding device according to claim 6, characterized in that: A plurality of notches (111) are arranged on the peripheral wall of the controllable bending section (110), the notches (111) are arranged in sequence along the axial direction of the guide member (100), and the notches (111) pass through the first plane (161).

9. The guiding device according to claim 8, characterized in that: The notch (111) is in communication with the drainage channel (140).

10. An endoscope, characterized in that: It comprises an endoscope handle (20), an endoscope insertion part (30), and a guiding device (10) as claimed in any one of claims 1 to 9, wherein the proximal end of the endoscope insertion part (30) is connected to the distal end of the endoscope handle (20), and the endoscope insertion part (30) comprises an active bending section (310) located at the distal end, and the active bending section (310) is at least partially arranged to correspond to the controllable bending section (110).

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