A guiding sheath and endoscope assembly

Abstract

The present application relates to the field of endoscopes. The present application discloses a guide sheath and an endoscope assembly for an endoscope, comprising: a tube body having an installation channel for inserting an insertion portion of an endoscope; a guide terminal, the guide terminal being arranged at the distal end of the tube body, the guide terminal being deflected relative to the distal end of the tube body toward a first radial side of the tube body, and the guide terminal having a transparent portion at least distributed in an area corresponding to an optical device of the insertion portion; a driving member, the driving member being arranged at the tube body, the driving member being connected to the guide terminal, and being used to drive the guide terminal to deflect relative to the distal end of the tube body toward a first radial side of the tube body, so as to form an opening connected to the installation channel between the guide terminal and the distal end of the tube body. In the present application, by providing a guide terminal having a transparent portion, and by causing the driving member to drive the guide terminal to deflect, the steps of inserting an endoscope into a human body can be simplified. Without pulling out the sheath, the endoscope can be freely operated in the human body.

Description

Technical Field

[0001] The present application relates to the technical field of endoscopes, and in particular to a guide sheath and an endoscope assembly. Background Art

[0002] As one of the important medical instruments in modern surgical operations, the insertion part of the endoscope can enter the human body through the human cavity or surgical incision, and the lesion site in the patient's body can be observed through the camera module at the far end of the insertion part.

[0003] During use, the endoscope is usually used in conjunction with a rigid hard endoscope because the insertion portion of the endoscope is easy to bend. Specifically, the hard endoscope is first inserted into the bladder and ureter through the urethra; then the guide wire is passed through the working channel of the hard endoscope to the renal pelvis; the hard endoscope is withdrawn, leaving only the guide wire in the urinary tract; the ureteral sheath and the sheath core in the sheath are then inserted through the guide wire; the sheath core in the ureteral sheath is pulled out; and then the insertion portion of the endoscope is inserted from the ureteral sheath.

[0004] The insertion and use process of the endoscope in the related art is complicated and it is easy to cause damage to the human body cavity during the insertion process. Summary of the invention

[0005] The present application provides a guide sheath and an endoscope assembly, which are at least used to solve the problem of complex endoscope insertion process.

[0006] In a first aspect, an embodiment of the present application provides a guide sheath that can be used in an endoscope. The guide sheath includes: a tube body having a mounting channel for inserting an insertion portion of an endoscope. A guide terminal, the guide terminal is disposed at the distal end of the tube body, the guide terminal can be offset to a first radial side of the tube body relative to the distal end of the tube body, and the guide terminal has a transparent portion distributed at least in an area corresponding to the optical device of the insertion portion. A drive member, the drive member is disposed on the tube body, the drive member is connected to the guide terminal, and is used to drive the guide terminal to offset to a first radial side of the tube body relative to the distal end of the tube body, so as to form an opening connected to the mounting channel between the guide terminal and the distal end of the tube body.

[0007] In a second aspect, an embodiment of the present application provides an endoscope assembly, including an insertion portion and the aforementioned guide sheath, wherein the insertion portion is inserted into the tube body, and the distal end of the insertion portion is inserted into the guide terminal.

[0008] Beneficial effects of this application:

[0009] In the embodiment of the present application, by providing a transparent portion on the guide end, the optical device at the distal end of the endoscope can be imaged through the guide end through the transparent portion, without the need to pull out the sheath and then insert the endoscope separately. In addition, when the transparent portion is not sufficient to meet the imaging requirements of the distal end of the endoscope, the guide end can be offset to the first side of the radial direction of the tube body under the drive of the driving member. At this time, an opening is formed between the guide end and the distal end of the tube body, and the insertion portion of the endoscope can extend forward through the opening until the guide sheath is extended. In the case of no need to pull out the sheath, the passive bending section at the distal end of the insertion portion of the endoscope can be freely bent in the human body without being constrained by the sheath, so as to perform multi-angle operation. In the whole process, the sheath and the endoscope perform their functions respectively, avoiding repeated insertion and extraction of the sheath or endoscope into the human cavity, causing damage to the human cavity, simplifying the endoscope insertion steps, and greatly improving the efficiency and convenience of the endoscope in use scenarios such as surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0011] In the attached picture:

[0012] Figure 1 A schematic diagram of the matching structure of an endoscope and a guide sheath disclosed in some embodiments of the present application;

[0013] Figure 2 A schematic diagram of the structure of a guide sheath disclosed in some embodiments of the present application;

[0014] Figure 3 A schematic diagram of a structure in which a guide sheath is deviated toward a first side according to some embodiments of the present application;

[0015] Figure 4 A schematic diagram of a structure in which another guide sheath tube is offset toward a first side according to some embodiments of the present application;

[0016] Figure 5 A schematic diagram of the structure of a connector disclosed in some embodiments of the present application;

[0017] Figure 6 This is a schematic structural diagram of the guide sheath tube deforming along the deformation groove disclosed in some embodiments of the present application.

[0018] Description of reference numerals:

[0019] 100-tube body, 200-guide end, 300-driving part, 400-opening, 500-auxiliary driving part, 600-operating handle,

[0020] 110-connecting member, 210-transparent portion, 220-deformation groove, 310-first sleeve, 320-first groove,

[0021] 510 - first position, 520 - second position, 530 - second sleeve, 531 - free section, 540 - second groove, 541 - avoidance groove. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0023] In order to facilitate understanding of the embodiments of the present application, the relevant technologies are first introduced in conjunction with application scenarios.

[0024] The insertion portion of the endoscope can enter the human body through a human cavity or a surgical incision, and the lesion site in the patient's body can be observed through a camera module at the far end of the insertion portion.

[0025] During use, since the insertion portion of the endoscope is easy to bend, it needs to be used in conjunction with a rigid hard endoscope.

[0026] The applicant discovered during the implementation process that the existing endoscope has a complicated insertion and use process and is prone to cause damage to the human body cavity during the insertion process.

[0027] In view of this, the present application proposes a guide sheath and an endoscope assembly, Figure 1-Figure 6 , describe in detail the technical solutions disclosed in each embodiment of this application.

[0028] In the embodiment of the present application, the guide sheath is used for an endoscope, and includes a tube body 100 and a guide tip 200. The tube body 100 is the main structure of the guide sheath, and has an installation channel inside for inserting the endoscope insertion part. The installation channel can also be used to insert other medical devices.

[0029] For example, Figure 1 As shown, the endoscope includes an operating handle 600 and an insertion portion, and the aforementioned guide sheath is disposed outside the insertion tube.

[0030] The guide end 200 is disposed at the distal end of the tube body 100, and the insertion portion of the endoscope can be inserted along the tube body 100, and the optical device at the distal end thereof is placed in the transparent portion 210 of the guide end 200. Specifically, the transparent portion 210 of the guide end 200 is a transparent structure that can transmit light, and the optical device can image the external environment through the transparent portion 210 on the guide end 200, so as to provide the operator with the image captured by the aforementioned optical device in real time during use.

[0031] The optical device in the present application may include an imaging component, a light source component, etc., wherein the imaging component is a camera, etc., and the light source component is an LED, etc., which are not limited here.

[0032] In some embodiments, the guide tip 200 may be a hollow structure, and the insertion portion of the endoscope may be inserted along the tube body 100, and the optical device at the distal end thereof may be placed in the hollow position of the guide tip 200, corresponding to the transparent portion 210. By providing a hollow structure, on the one hand, the production materials of the guide tip 200 may be saved, and its production cost may be reduced. On the other hand, placing the optical device in the hollow position greatly reduces the interval and shielding between the optical device and the external part to be observed, and further improves the efficiency and quality of the optical device imaging.

[0033] The guide tip 200 can be driven by the driving member 300 to deviate toward a first side in the radial direction of the tube body 100 relative to the distal end of the tube body 100, such as Figure 3 As shown, when the pipe body 100 is deflected by the driving member 300 , an opening 400 is formed between the distal end of the pipe body 100 and the guide end head 200 , and the opening 400 is communicated with the installation channel in the pipe body 100 .

[0034] The driving member 300 is disposed on the pipe body 100, and the driving member 300 is fixedly connected to the guide end head 200. For example, the driving member 300 can be welded, glued, fused, etc. to the guide end head 200.

[0035] Specifically, Figure 3 As shown, the driving member 300 is movably disposed on the tube body 100, can move relative to the tube body 100, and drive the guide end 200 to deviate relative to the distal end of the tube body 100 toward the first side of the radial direction of the tube body 100. Exemplarily, the driving member 300 can be spirally wound around the tube body 100 along the circumferential direction, and when the driving member 300 is pulled, the guide end 200 deviates accordingly.

[0036] Specifically, when the guide tip 200 is offset relative to the tube body 100 to form an opening 400, the distal end of the endoscope insertion portion can continue to be inserted forward through the opening 400, break away from the restriction of the guide sheath, and be inserted into the human tissue. At this time, the distal end of the endoscope insertion portion can be freely bent inside the human body to enable the optical component to observe different parts from multiple angles.

[0037] Therefore, the guide tip 200 provided by the present application is provided with a transparent part 210 at a position corresponding to the optical device, and the interior of the human body cavity can be illuminated or imaged by the optical device, so as to obtain a clearer image of the human body and the position information of the guide tip 200, which is convenient for the operator to perform visual operation. During use, the orientation is calibrated in time to facilitate the insertion of the guide sheath into the human body. At the same time, by setting a driving member 300 to drive the guide tip 200 to deviate, an opening 400 is formed at its offset position. At this time, the distal end of the endoscope insertion part can enter the human tissue through the opening 400. On the one hand, the guide tip 200 at the front end of the sheath will not limit the bending operation of the distal end of the endoscope insertion part, and can further expand the imaging area of ​​the endoscope optical component, which is convenient for the operator to observe the human lesions. On the other hand, the endoscope and the guide sheath can be operated in coordination, and there is no need to frequently insert and withdraw the endoscope or the guide sheath during use, which causes unnecessary damage to the human tissue, optimizes the operation procedure, and reduces the steps of inserting the guide sheath and the endoscope during the operation. In addition, the guide sheath also creates a pathway for the human body, making it easier for doctors to insert other medical devices to meet more diagnostic and treatment needs.

[0038] In some embodiments, the guide end 200 is connected to the first radial side of the tube body 100 by rotation. At this time, the driving member 300 drives the guide end 200 to rotate along the connection point between the guide end 200 and the tube body 100, thereby limiting the deviation path of the guide end 200 to the smallest spatial range to the greatest extent. Exemplarily, the guide end 200 and the first radial side of the tube body 100 can be connected to each other by rotation in a hinged manner.

[0039] In some embodiments, the guide sheath further comprises a connector 110. The connector 110 is respectively connected to the distal end of the tube body 100 and the guide tip 200. The connection methods include but are not limited to welding, gluing, etc. The connector 110 can adapt to the guide tip 200 and the distal end of the tube body 100 to rotate along the first radial side of the tube body 100 by deformation.

[0040] The connecting member 110 should be a member that can be bent repeatedly. Exemplarily, the connecting member 110 can be made of various materials such as rubber and plastic.

[0041] The connecting piece 110 connects the tube body 100 and the guide end 200, providing a fulcrum for the guide end 200 to rotate relative to the tube body 100, thereby preventing the tube body 100 and the guide end 200 from being misaligned or offset, which would affect the normal use of the guide sheath.

[0042] In some embodiments, the connector 110 includes an elastic portion (not shown in the figure), and when the guide end 200 rotates to the first side of the radial direction of the tube body 100, at least part of the elastic portion undergoes elastic deformation. As the guide end 200 deviates, the elastic portion undergoes elastic deformation and deforms in the direction in which the guide end 200 deviates.

[0043] Specifically, the elastic part can be a member with elastic force such as a spring or an elastic rope. When the driving member 300 drives the guide end 200 to rotate toward the first side of the radial direction of the tube body 100, the elastic part undergoes elastic deformation and stores energy. When the force of the driving member 300 on the guide end 200 is released or reduced, the elastic potential energy at the elastic part is released and drives the guide end 200 to move in the direction of reducing the opening 400.

[0044] Exemplarily, when the guide tip 200 rotates to the first radial side of the tube body 100 , the elastic portion is stretched, and at this time, the elastic portion has elastic potential energy of contraction.

[0045] When the operator needs to close the opening 400 between the guide terminal 200 and the tube body 100, he only needs to release the force of the driving member 300 on the guide terminal 200. At this time, due to the elastic deformation of the elastic part itself, the elastic part has rebound potential energy. Driven by the elastic potential energy, the elastic part can move the guide terminal 200 in the direction of reducing the opening 400, and finally close the opening 400. By arranging the elastic part on the connecting member 110, the elastic force of the elastic part can help the guide terminal 200 return to the initial position, simplifying the operation of closing the opening 400, greatly improving the operability of controlling the size of the opening 400 between the guide terminal 200 and the tube body 100, and optimizing the user experience.

[0046] In some embodiments, the connecting member 110 may be made entirely of elastic material, or partially of elastic material.

[0047] In some embodiments, the elastic portion of the connector 110 can also be stretched when the guide end 200 rotates relative to the tube body 100. At this time, there is a gap in the connection between the guide end 200 and the distal end of the tube body 100, and the extrusion deformation between the guide end 200 and the tube body 100 will also be reduced.

[0048] Furthermore, an inclined surface may be provided at the connection portion between the tube body 100 and the guide end head 200. In this case, the inclined surface will form a rotation space at the connection portion between the tube body 100 and the guide end head 200 to prevent the edge of the guide end head 200 from being squeezed with the distal end face of the tube body 100 when the guide end head 200 rotates relative to the tube body 100, thereby forming a rotation resistance. Specifically, a first inclined surface is provided at the rotation connection portion between the tube body 100 and the guide end head 200, and the first inclined surface is inclined toward a first side of the radial direction of the tube body 100 along the direction from the distal end to the proximal end of the tube body 100.

[0049] In some embodiments, a second inclined surface may be provided at the rotational connection portion between the guide tip 200 and the tube body 100 , and the second inclined surface is inclined toward the first radial side of the guide tip 200 from the proximal end to the distal end of the guide tip 200 .

[0050] Specifically, the first inclined surface and the second inclined surface may exist at the same time, or only one of them may be provided. The inclination angles of the first inclined surface and the second inclined surface may be set as required, and are not limited here.

[0051] In the specific implementation process, in order to make the rotation space meet the deflection requirements of the guide end head 200, the inclination angle of the first inclined surface and the second inclined surface can be greater than 30 degrees. Correspondingly, if the first inclined surface and the second inclined surface are set at the same time, the inclination angles of both can be relatively reduced. When only one of the inclined surfaces is set, the inclination angle can be relatively increased.

[0052] By providing an elastic part on the connecting member 110, elastic force is provided for the connecting member 110, so that after rotation, the connecting member 110 can automatically rebound with the help of elastic potential energy to close the opening 400. The operation of the rotation control of the guide terminal 200 is optimized, and at the same time, the control steps of closing or opening the opening 400 between the guide terminal 200 and the tube body 100 are simplified, so that the size of the opening 400 can be adjusted semi-automatically. Furthermore, the elastic part of the connecting member 110 can also provide a rotation space for the rotation of the guide terminal 200 through its elastic deformation, reduce the extrusion wear between the guide terminal 200 and the distal end of the tube body 100, and reduce the rotation resistance of the guide terminal 200.

[0053] By setting a first inclined surface and / or a second inclined surface corresponding to the rotational connection portion between the tube body 100 and the guide end 200, the space reserved by the inclined surface is used as a rotation space for the guide end 200 to rotate, so that when the guide end 200 rotates at the connection portion, it will not encounter excessive resistance to hinder the movement of the guide end 200, further optimizing the smoothness of the rotation of the guide end 200 and improving the operability of the guide end 200 relative to the tube body 100.

[0054] In some embodiments, the driving member 300 can move along the axial direction of the tube body 100. Exemplarily, the driving member 300 is arranged on the tube body 100 in a variety of ways, such as spiral winding, curved winding, etc. The driving member 300 only needs to be able to move relative to the tube body 100 in the axial direction, and the specific movement trajectory is not limited.

[0055] Exemplarily, since the guide terminal 200 is connected to the driving member 300, when the driving member 300 moves toward the proximal end of the tube body 100, the guide terminal 200 is simultaneously subjected to a pulling force, causing the guide terminal 200 to move. At this time, since the guide terminal 200 is connected to the tube body 100, the guide terminal 200 is restricted from moving toward the proximal end of the tube body 100, so the guide terminal 200 can only rotate relative to the force point (i.e., the connection point between the guide terminal 200 and the driving member 300). At this time, the guide terminal 200 deviates toward the first radial side of the tube body 100, forming an opening 400 connected to the installation channel.

[0056] In some embodiments, a first sleeve 310 is disposed outside the driving member 300 , the first sleeve 310 is sleeved on the driving member 300 , and then the first sleeve 310 is fixedly connected to the tube body 100 .

[0057] At this time, the motion track of the driving member 300 is limited in the first sleeve 310, and no movement other than along the first sleeve 310 can occur. Furthermore, the first sleeve 310 is connected to the tube body 100, so the driving member 300 sleeved therein can only move on the tube body 100 along the direction in which the first sleeve 310 is set.

[0058] In addition to limiting the motion trajectory of the driver 300, the first sleeve 310 can also protect the driver 300 and the tube body 100. Since the driver 300 needs to move along the axial direction of the tube body 100, it is inevitable that there will be uninterrupted friction resistance between the two. During repeated movements, the friction resistance will cause wear to the tube body 100 and the driver 300. By providing the first sleeve 310, while limiting the motion trajectory of the driver 300, it can also protect it, so as to prevent the driver 300 from being worn, broken, etc. due to the interaction of forces between the driver 300 and the tube body 100 during the pulling process, thereby affecting the normal use of the driver 300.

[0059] In some embodiments, the first sleeve 310 can be made of plastic, rubber or other materials. Exemplarily, the first sleeve 310 has a certain rigidity, for example, the first sleeve 310 is made of plastic. At this time, the first sleeve 310 cannot be deflected arbitrarily under the action of external force to limit the motion trajectory of the driving member 300. Exemplarily, when the first sleeve 310 is made of a flexible material, such as rubber, the first sleeve 310 can be connected to the tube body 100 by wire to limit its position by wire connection.

[0060] Since the first sleeve 310 cannot move freely under external force, the positional relationship between the distal end of the first sleeve 310 and the distal end of the tube body 100, and the connection position between the guide end 200 and the driving member 300 will affect the deflection angle of the guide end 200 relative to the tube body 100.

[0061] Exemplarily, when the distal end of the first sleeve 310 is flush with the distal end of the tube body 100, the driving member 300 is pulled toward the proximal end of the tube body 100. At this time, the moving distance of the driving member 300 that can be pulled is only the distance between the connecting position of the driving member 300 and the guide terminal 200 and the bottom of the guide terminal 200. That is, when the driving member 300 is pulled, the guide terminal 200 deflects, and when the connecting part of the guide terminal 200 and the driving member 300 abuts against the distal end of the first sleeve 310, at this time, the driving member 300 can no longer move toward the proximal end, and the deflection angle of the guide terminal 200 can no longer be increased. If the connecting part of the driving member 300 and the guide terminal 200 is close to the bottom of the guide terminal 200, at this time, the distance that the driving member 300 can move is very short, and the angle that can drive the guide terminal 200 to deflect is naturally very small, and the size of the opening 400 may not meet more usage requirements of the operator.

[0062] In some embodiments, along the axial direction of the tube body 100, the length of the distal end portion of the tube body 100 beyond the first sleeve 310 is a first length. Along the extension direction of the guide tip 200, the distance between the connection point of the guide tip 200 and the driving member 300 and the connection point of the guide tip 200 and the tube body 100 is a second length. The first length should be greater than the second length, thereby increasing the deflection angle of the guide tip 200.

[0063] In some embodiments, the driving member 300 is disposed on the tubular body 100 along the axial direction of the tubular body 100. At this time, the moving path of the driving member 300 on the tubular body 100 is the shortest. When the driving member 300 moves toward the proximal end of the tubular body 100, the displacement of the driving member 300 is the smallest, and the driving force required is also the smallest, which greatly improves the driving efficiency of the driving member 300 and optimizes the user experience. Correspondingly, the first sleeve 310 is sleeved on the driving member 300 and is also axially disposed on the tubular body 100. At this time, the driving member 300 moves smoothly in the axial direction of the tubular body 100 without additional resistance caused by the curved path.

[0064] In some embodiments, a first groove 320 is disposed on the tube body 100 . The first sleeve 310 is at least partially disposed in the first groove 320 .

[0065] The first groove 320 is used to install the first sleeve 310, and the depression depth of the first groove 320 is related to the diameter of the first sleeve 310. Specifically, the depression depth of the first groove 320 is greater than or equal to the diameter of the first sleeve 310. Exemplarily, the diameter of the first sleeve 310 is less than or equal to the depression depth of the first groove 320, and the first sleeve 310 is completely sunken into the first groove 320. On the outer surface of the tube body 100, the first tube body 100 will not form a protrusion, thereby affecting the flatness of the surface of the tube body 100.

[0066] When the guide sheath needs to be inserted into the human body for use, if the surface of the guide sheath is uneven, it is easy to cause scratches on human tissues and easily damage human tissues. In addition, since the guide sheath needs to move in the human body cavity, if the surface of its tube body 100 is uneven, it will cause unnecessary resistance during the movement of the guide sheath, affecting the movement of the guide sheath in the human body. Therefore, by installing the first sleeve 310 through the first groove 320, the flatness of the surface of the tube body 100 can be greatly increased, which is convenient for the guide sheath to move inside the human body. Furthermore, the flat surface of the tube body 100 is also conducive to the insertion and use of the guide sheath in other animals or instruments.

[0067] In some embodiments, the guide sheath further comprises at least one auxiliary drive member 500. Figure 3 , 5 As shown in FIG. 6 , the auxiliary driving member 500 may be disposed on the pipe body 100 along the circumferential direction. For example, the auxiliary driving member 500 may be symmetrically distributed on both sides of the driving member 300. The auxiliary driving member 500 and the guide end head 200 may be connected by various methods such as gluing and welding.

[0068] In a specific implementation process, the connection position of the auxiliary driving member 500 and the guide end head 200 is the first position 510, and the connection position of the driving member 300 and the guide end head 200 is the second position 520. The first position 510 and the second position 520 are spaced apart in the circumferential direction of the guide end head 200. The spacing distance between the first position 510 and the second position 520 in the circumferential direction of the guide end head 200 should be at least greater than 0.

[0069] In the above embodiment, the first position 510 and the second position 520 are spaced apart in the circumferential direction of the guide terminal 200. The driving member 300 and the auxiliary driving member 500 can be used to pull the guide terminal 200 at multiple angles to fix it to the distal end of the tube body 100, thereby avoiding unnecessary deviation of the guide terminal 200 under the action of external force and improving the reliability of the docking between the guide terminal 200 and the distal end of the tube body 100. Specifically, during the process of inserting the guide sheath into the human body, the guide terminal 200 often needs to be squeezed by human tissue. The above embodiment arranges the first position 510 and the second position 520 at intervals, so that there are multiple connection points between the guide terminal 200 and the tube body 100 in the circumferential direction, which is beneficial to prevent the guide terminal 200 from being opened under the action of external force, and can avoid the guide terminal from deviating from the distal end of the tube body 100 in the radial direction, so as to facilitate entering the cavity.

[0070] For example, the circumferential angle between the first position 510 and the second position 520 may be greater than 45 degrees. Preferably, the circumferential angle between the first position 510 and the second position 520 is 90 degrees, so that the guide tip 200 can be better fixed to the distal end of the tube body 100 .

[0071] By providing the auxiliary driving member 500, the circumferential connection portion between the guide terminal 200 and the distal end of the tube body 100 is increased, the relative position of the guide terminal 200 and the distal end of the tube body 100 is further limited, the possibility of accidental displacement of the guide terminal 200 is reduced, the connection strength between the guide terminal 200 and the distal end of the tube body 100 is greatly improved, and the operability and stability of the size control of the opening 400 are achieved.

[0072] Since the guide end 200 is fixedly connected to the auxiliary connecting member 110, when the guide end 200 is deflected, the auxiliary driving member 500 will move accordingly. Therefore, the auxiliary driving member 500 can also move along the axial direction of the tube body 100. The auxiliary driving member 500 is arranged in a similar manner to the driving member 300, and will not be described in detail here.

[0073] Since the guide end 200 is deflected toward the first radial side of the tube body 100, when the guide end 200 rotates, the portion of the distal end of the auxiliary driving member 500 close to the connection position with the guide end 200 will bend toward the first radial side of the tube body 100 to adapt to the deflection of the guide end 200. Therefore, at least a portion of the distal end of the auxiliary driving member 500 can be bent.

[0074] Similar to the driving member 300, since the auxiliary driving member 500 needs to move along the axial direction of the tube body 100, in order to better limit its moving path and avoid unnecessary misalignment and friction, a second sleeve 530 can be arranged outside the auxiliary driving member 500. The second sleeve 530 is connected to the tube body 100, and the connection methods include but are not limited to gluing, welding, etc.

[0075] Similar to the first sleeve 310 , the second sleeve 530 serves to limit the moving path of the auxiliary driving member 500 . Therefore, the second sleeve 530 is fixedly connected relative to the pipe body 100 .

[0076] In some embodiments, a corresponding free section 531 is disposed at least partially at the distal end of the second sleeve 530 .

[0077] like Figure 5 , 6 As shown, the free section 531 refers to a tube section that can be flexibly bent. The free section 531 located at the far end of the second sleeve 530 can bend along with the bending action of the auxiliary driving member 500.

[0078] By arranging the second sleeve 530 on the outside of the auxiliary drive member 500, the moving path of the auxiliary drive member 500 can be limited in the axial direction to prevent it from being misplaced or offset. At the same time, the second sleeve 530 can also protect the auxiliary drive member 500, avoiding unnecessary friction between it and the tube body 100 and damaging the auxiliary drive member 500. Furthermore, a free section 531 that can move freely is arranged at the far end of the second sleeve 530, avoiding the stress concentration problem generated by the edge of the second sleeve 530 and the auxiliary drive member 500 during the bending process, and reducing the wear of the auxiliary drive member 500.

[0079] Similar to the arrangement of the driving member 300, since the auxiliary driving member 500 and the second sleeve 530 sleeved outside thereof also protrude circumferentially relative to the tube body 100, a second groove 540 may be correspondingly arranged, and the auxiliary driving member 500 may be arranged in the second groove 540. Specifically, the concave depth of the second groove 540 is greater than or equal to the diameter of the second sleeve 530.

[0080] In some embodiments, the distal end of the second groove 540 further includes an avoidance groove 541. Figure 3 , 5 As shown, the avoidance groove 541 is connected to the second groove 540 and is recessed into the tube body 100. When the free section 531 is bent, the avoidance groove 541 is located on the bending path of the free section 531. That is, during the entire bending process of the free section 531, the outer peripheral wall of the free section 531 does not exceed the outer peripheral wall of the tube body 100.

[0081] By providing the second groove 540 and the avoidance groove 541 corresponding to the free section 531, the auxiliary driving component 500 will not cause the surface of the guide sheath to bulge when it moves or bends. On the one hand, it protects human tissue from friction damage caused by the auxiliary driving component 500 moving back and forth. On the other hand, it can also protect the auxiliary driving component 500 so that it has an independent moving space inside the human tissue, and the movement trajectory is not restricted by the position of the human tissue, which greatly improves the operability of the auxiliary driving component 500 and the stability of its movement.

[0082] In some embodiments, the guide tip 200 may be a solid structure or a hollow structure. When the guide tip 200 is a hollow structure, there is a cavity inside it.

[0083] For example, when the guide tip 200 is a hollow structure, Figure 6 As shown, the guide terminal 200 is provided with deformation grooves 220 distributed along its axial direction to adapt to the deformation of the guide terminal 200. The deformation grooves 220 can be located on the outer peripheral wall and / or the inner peripheral wall of the guide terminal 200, and there is no limitation on this. However, in the specific implementation process, in order to ensure that the outer surface of the guide terminal 200 is smooth so that it can be inserted into the human body more conveniently, the deformation grooves 220 can be provided on the inner peripheral wall of the guide terminal 200.

[0084] like Figure 6 As shown, when the guide terminal 200 rotates 180 degrees under the action of the driving member 300, the opening 400 at the far end of the tube body 100 is fully opened. At this time, by pulling the auxiliary driving member 500, a force in the direction of the tube body 100 is provided in the circumferential direction of the guide terminal 200. Since there is a notch at the position where the deformation groove 220 is located on the guide terminal 200, its strength and rigidity are weaker than the side wall without the deformation groove 220. Therefore, the guide terminal 200 will be compressed inward along the position where the deformation groove 220 is located until the hollow part inside the guide terminal 200 is completely squeezed and disappears, and the space occupied by the guide terminal 200 is greatly reduced, making it more convenient for operators to operate in the human body space, and the impact on the human body is also smaller during the operation.

[0085] Furthermore, the auxiliary driver 500 needs to drive the guide end 200 to collapse in the direction of the tube body 100. Therefore, the distance between the first position 510 where the auxiliary driver 500 is connected to the guide end 200 and the central axis of the tube body 100 is greater than or equal to the distance between the deformation groove 220 and the central axis of the tube body 100.

[0086] In the specific implementation process, the deformation groove 220 can be set according to the stress characteristics when it is compressed, so as to facilitate the compression operation of the guide end 200. That is, the deformation groove 220 is opened in the part that is subjected to pressure and tension when it is compressed, so as to reduce the resistance that needs to be overcome when it is deformed, reduce the force consumed when it is compressed, and facilitate its compression.

[0087] In other embodiments, in addition to providing the deformation groove 220 , the circumferential strength of the guide tip 200 may also be adjusted by changing the thickness of the side wall of the guide tip 200 .

[0088] When the guide end 200 is compressed, the thickness of the side wall of the guide end 200 that is subjected to pressure or tension is correspondingly reduced. At this time, since the thickness of the side wall is thinner, its strength and rigidity are correspondingly reduced, and the side wall is more likely to bend than other parts. This method can also achieve a similar technical effect as the deformation groove 220.

[0089] Similarly, the thinner side wall on the guide tip 200 should be correspondingly arranged at a position closer to the central axis of the tube body 100 than the first position 510 to achieve the technical effect brought by the aforementioned deformation groove 220 .

[0090] In some embodiments, while the deformation groove 220 is provided, the thickness of the side wall of the guide end head 200 corresponding to the deformation groove 220 can be reduced to achieve a better bending effect.

[0091] The embodiment of the present application also includes an endoscope assembly, including an insertion portion and the aforementioned guide sheath, the insertion portion is inserted into the tube body 100, and the distal end of the insertion portion is inserted into the guide terminal 200.

[0092] Note that the endoscope involved in the embodiments of the present application may 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.

[0093] The above embodiments of the present application focus on describing the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0094] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A guide sheath for an endoscope, characterized in that: include: A tube body (100) having a mounting channel for inserting an insertion portion of the endoscope; A guide tip (200), the guide tip (200) being arranged at the distal end of the tube body (100), the guide tip (200) being displaceable relative to the distal end of the tube body (100) toward a first side in a radial direction of the tube body (100), and the guide tip (200) having a transparent portion (210) at least distributed in a region corresponding to the optical device of the insertion portion; a driving member (300), the driving member (300) being disposed on the tube body (100), the driving member (300) being connected to the guide end head (200) and being used for driving the guide end head (200) to deviate relative to the distal end of the tube body (100) toward a first side in a radial direction of the tube body (100), so as to form an opening (400) communicating with the installation channel between the guide end head (200) and the distal end of the tube body (100); The guide sheath tube further comprises at least one auxiliary driving member (500), the auxiliary driving member (500) being axially arranged on the tube body (100) and connected to the guide terminal (200), the connection position of the auxiliary driving member (500) and the guide terminal (200) being a first position (510), the connection position of the driving member (300) and the guide terminal (200) being a second position (520), the first position (510) and the second position (520) being spaced apart in the circumferential direction of the guide terminal (200); The guide end head (200) is provided with deformation grooves (220) distributed along the axial direction of the guide end head (200); when the auxiliary driving member (500) moves toward the proximal end, the guide end head (200) is deformed based on the deformation grooves (220).

2. The guide sheath according to claim 1, characterized in that: The guide end (200) is connected to the first radial side of the tube body (100) by rotation, and the guide sheath also includes a connecting piece (110), and the connecting piece (110) is respectively connected to the distal end of the tube body (100) and the guide end (200), and the connecting piece (110) adapts to the rotation of the guide end (200) and the distal end of the tube body (100) along the first radial side of the tube body (100) by deformation.

3. The guide sheath according to claim 2, characterized in that: The connecting member (110) comprises an elastic portion, and when the guide end head (200) is rotated to a first radial side of the tube body (100), at least a portion of the elastic portion undergoes elastic deformation, and the elastic portion can drive the guide end head (200) to move in a direction of reducing the opening (400); And / or, a first inclined surface is provided at the rotationally connected portion between the tube body (100) and the guide end head (200), and the first inclined surface is inclined toward a first radial side of the tube body (100) along a direction from the distal end to the proximal end of the tube body (100); And / or, a second inclined surface is provided at the rotationally connected portion between the guide end (200) and the tube body (100), and along the direction from the proximal end to the distal end of the guide end (200), the second inclined surface is inclined toward the first radial side of the guide end (200).

4. The guide sheath according to claim 1, characterized in that: The driving member (300) is capable of moving axially along the tube body (100), driving the guide end head (200) to deviate along a first radial side of the tube body (100); The guide sheath further comprises a first sleeve (310), wherein the first sleeve (310) is sleeved on the driving member (300), and the first sleeve (310) is connected to the tube body (100).

5. The guide sheath according to claim 4, characterized in that: Along the axial direction of the tube body (100), the length of the distal end portion of the tube body (100) beyond the first sleeve (310) is a first length, and along the extension direction of the guide end head (200), the distance between the connection point of the guide end head (200) and the driving member (300) and the connection point of the guide end head (200) and the tube body (100) is a second length, and the first length is greater than or equal to the second length. And / or, the driving member (300) is arranged on the tube body (100) along the axial direction of the tube body (100), And / or, a first groove (320) is provided on the tube body (100), and the first sleeve (310) is at least partially disposed in the first groove (320).

6. The guide sheath according to claim 1, characterized in that: The auxiliary driving member (500) is capable of axially moving along the tube body (100), and a small portion of the distal end side of the auxiliary driving member (500) is capable of bending toward the first side of the tube body (100) to accommodate the guide end head (200) being offset along the first radial side of the tube body (100); The guide sheath further comprises a second sleeve (530), wherein the second sleeve (530) is sleeved on the auxiliary drive member (500), and the second sleeve (530) is connected to the tube body (100), and the distal end of the second sleeve (530) comprises a free section (531), and the free section (531) can be bent along the distal end side of the auxiliary drive member (500) toward a radial first side of the tube body (100).

7. The guide sheath according to claim 6, characterized in that: The tube body (100) has a second groove (540) arranged along the axial direction of the tube body (100); the second sleeve (530) is at least partially arranged in the second groove (540); the far end of the second groove (540) comprises an avoidance groove (541); the avoidance groove (541) is connected to the second groove (540) and extends circumferentially to the outer peripheral wall of the tube body (100); the avoidance groove (541) is arranged on the curved path of the free section (531).

8. The guide sheath according to claim 7, characterized in that: The thickness of the side wall of the guide tip (200) between the first position (510) and the second position (520) is smaller than the thickness of other side walls.

9. An endoscope assembly, characterized in that: It comprises an insertion portion and the guide sheath according to any one of claims 1 to 8, wherein the insertion portion is inserted into the tube body (100), and the distal end of the insertion portion is inserted into the guide terminal (200).

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