Distal member, endoscope and visual sheath instrument

Abstract

The present invention discloses a distal member, an endoscope and a visible sheath instrument, relating to the technical field of endoscopes. The distal member includes: a body and a blocking member. By providing a shuttle channel extending from the distal end to the proximal end along the longitudinal axis in one of the body and the object member, and the other is for being inserted into the shuttle channel and movable along the extending direction of the shuttle channel, an insertion gap between the body and the object member forms a suction channel, and a blocking member is provided at the distal port of the shuttle channel to block a partial area of the distal port of the suction channel, so that the negative pressure suction force from the distal end towards the proximal end in the suction channel converges at the distal port of the shuttle channel, which is beneficial to improving the extraction efficiency of the suction channel, and solves the problem that the negative pressure suction sheath has an unsatisfactory extraction efficiency for stones in the prior art.

Description

Technical Field

[0001] The present invention relates to the field of endoscopes, and particularly to a distal member, an endoscope, and a visible sheath instrument. Background Art

[0002] An endoscope is a commonly used medical device, which is an inspection instrument that can directly enter the natural ducts of the human body and can provide sufficient diagnostic information for surgeons to treat diseases.

[0003] During the process of treating kidney stones, generally, an endoscope and a negative pressure aspiration sheath need to be used in cooperation. Among them, the endoscope provides a delivery channel, which is used to deliver water and a lithotripsy optical fiber or a stone retrieval basket, etc. Water can pass through the delivery channel and be sent into the kidney, and the water and stones are sucked out of the kidney through the suction cavity of the negative pressure aspiration sheath.

[0004] Currently, the relatively ideal relationship when the commonly used negative pressure aspiration sheath is used in cooperation with an endoscope is as Figure 1 shown. There is a large gap between the two, and large stones can pass through or have a good lithotripsy passing efficiency. However, the suction efficiency or suction capacity of the lithotripsy is still not ideal. Summary of the Invention

[0005] The present invention discloses a distal member, an endoscope, and a visible sheath instrument to at least partially improve the above technical problems.

[0006] To solve the above problems, the present invention adopts the following technical solutions:

[0007] On the one hand, an embodiment of the present application provides a distal member, including: a body and a blocking member. The body extends from the distal end to the proximal end along the longitudinal axis, and the body is used for inserting and mating with an object member. A shuttle channel extending from the distal end to the proximal end along the longitudinal axis is provided inside one of the body and the object member, and the other is used for inserting into the shuttle channel and can move along the extension direction of the shuttle channel. The insertion and mating gap between the body and the object member forms a suction cavity. The blocking member is disposed at the distal end of the body and is used for blocking a part of the distal port of the suction cavity at the distal port of the shuttle channel to form a suction port, so that the negative pressure suction force from the distal end towards the proximal end located in the suction cavity converges at the suction port.

[0008] In one embodiment, the blocking member is configured to converge the negative pressure suction force from the distal end towards the proximal end located in the suction cavity at the suction port in a continuous region that is continuous along the circumferential direction of the body.

[0009] In one embodiment, the maximum radial dimension of the insertion and mating gap is located within the continuous region.

[0010] In one embodiment, the distal member further includes: a telescopic tube, which is movably arranged at the distal end of the suction channel and connected to the body. The telescopic tube extends along and penetrates the suction channel. The telescopic tube is movably arranged inside the suction channel and on the side of the blocking member, and the telescopic tube can selectively extend out of the suction port.

[0011] In one embodiment, the peripheral edge of the tube wall of the telescopic tube surrounds the boundary of the continuous region.

[0012] In one embodiment, when the body is a sheath tube provided with the shuttle channel and the object member is the insertion part of an endoscope, there is a notch penetrating the tube wall at the tube wall of the telescopic tube. The notch communicates with the suction channel, and the notch can selectively extend out of the distal port of the suction channel. The notch faces the object member;

[0013] And / or, when the body is a sheath tube provided with the shuttle channel and the object member is the insertion part of an endoscope, the proximal surface of the telescopic tube and / or the proximal surface of the blocking member are inclined to guide the object member to be inserted into the distal end of the body;

[0014] And / or, when the body is a sheath tube provided with the shuttle channel and the object member is the insertion part of an endoscope, the distal member further includes a driving member. The driving member is connected to the telescopic tube and is used to drive the telescopic tube to move along the axial direction of the suction channel, and to make the telescopic tube extend out of the distal port of the suction channel or to retract the telescopic tube into the suction channel.

[0015] In one embodiment, when the body is the insertion part of an endoscope and the object member is a sheath tube provided with the shuttle channel, the body includes: a lens module and an instrument channel. In the radial direction of the shuttle channel, the instrument channel is arranged farther away from the suction channel than the lens module;

[0016] And / or, when the body is the insertion part of an endoscope and the object member is a sheath tube provided with the shuttle channel, there is a notch penetrating the tube wall at the tube wall of the telescopic tube. The notch communicates with the suction channel, and the notch can selectively extend out of the distal port of the suction channel. The notch faces the object member, and the notch faces the center line of the shuttle channel;

[0017] And / or, when the body is the insertion part of an endoscope and the object member is a sheath tube provided with the shuttle channel, the distal member further includes a driving member. The driving member is connected to the telescopic tube and is used to drive the telescopic tube to move along the axial direction of the suction channel, and to make the telescopic tube extend out of the distal port of the suction channel or to retract the telescopic tube into the suction channel.

[0018] In one embodiment, the body and the object member are limited in the radial direction of the shuttle channel, and one of the body and the object member is attached to the inner surface of the other.

[0019] And / or, the blocking member is located in the shuttle channel and extends from the circumferential direction with a smaller gap between the body and the object member to the circumferential direction with a larger gap, and crosses the first axis of one of the body and the object member located in the shuttle channel, and the first axis is a perpendicular line in the direction of the common diameter on the distal end surface of the body and the object member.

[0020] On the other hand, an embodiment of the present application further provides an endoscope, including a handle portion and the distal member as described above, and the handle portion is connected to the insertion portion.

[0021] In still another aspect, an embodiment of the present application further provides a visual mirror sheath instrument, including a sheath tube and the endoscope as described above.

[0022] The technical solution adopted by the present invention can achieve the following beneficial effects:

[0023] The distal member provided by the embodiment of the present application is provided with a shuttle channel extending from the distal end to the proximal end along the longitudinal axis in one of the body and the object member, the other is located in the shuttle channel and can move along the extending direction of the shuttle channel, and the insertion gap between the body and the object member forms a suction channel, and a blocking member is provided at the distal port of the shuttle channel to block a partial area of the distal port of the suction channel, so that the negative pressure suction force from the distal end to the proximal end in the suction channel converges at the distal port of the shuttle channel, which is beneficial to improving the extraction efficiency of the suction channel, and solves the problem that the negative pressure suction sheath has an unsatisfactory extraction efficiency for stones in the prior art. Applying the above-mentioned distal member to an endoscope can also solve the foregoing problem, and applying the above-mentioned endoscope to a visual mirror sheath instrument can also solve the foregoing problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art can also obtain other drawings without creative efforts based on these drawings.

[0025] Figure 1 A schematic diagram of the distal end surface structure of the cooperation between the insertion portion and the sheath tube in the prior art is shown;

[0026] Figure 2 A schematic diagram of the structure of a distal member in an embodiment of the present application is shown;

[0027] Figure 3 is Figure 2 An enlarged view of location C in ;

[0028] Figure 4 A cross-sectional view of a partial area where a distal member cooperates with an object member in an embodiment of the present application;

[0029] Figure 5 Shows a schematic structural diagram of another distal member in an embodiment of the present application;

[0030] Figure 6 is Figure 5 An enlarged view of location B in ;

[0031] Figure 7 A cross-sectional view of a partial area where another distal member cooperates with an object member in an embodiment of the present application;

[0032] Figure 8 Shows a schematic structural diagram of a partial area where a distal member cooperates with an object member in an embodiment of the present application;

[0033] Figure 9 Shows a schematic structural diagram of the distal end face where a distal member cooperates with an object member in an embodiment of the present application;

[0034] Figure 10 Shows a schematic structural diagram of the distal end face where another distal member cooperates with an object member in an embodiment of the present application;

[0035] Figure 11 Shows a schematic structural diagram of a partial structure where the insertion part of a distal member extends out of the sheath tube in an embodiment of the present application;

[0036] Figure 12 Shows a schematic diagram of another perspective of a partial structure where the insertion part of a distal member extends out of the sheath tube in an embodiment of the present application;

[0037] Figure 13 Shows a schematic structural diagram of a visual mirror sheath instrument provided by an embodiment of the present application;

[0038] Figure 14 is Figure 13 An enlarged view of location A in .

[0039] In the figure: 1. distal member; 10. endoscope; 110. insertion portion; 120. handle portion; 130. lens module; 140. instrument channel; 150. lighting module; 20. sheath tube; 210. negative pressure connection nozzle; 30. shuttle channel; 310. suction channel; 40. telescopic tube; 410. notch; 50. first surface; 60. driving member; 70. blocking member; 2. visual mirror sheath instrument. Detailed implementation manners

[0040] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation manners obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0041] The terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same type, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally indicates an "or" relationship between the associated objects before and after.

[0042] In the embodiments of the present application, "proximal" and "distal" refer to the relative distances of each component from the user in the usage environment. Among them, the end closer to the user is designated as "proximal", and the end farther from the user is designated as "distal".

[0043] The inventive concept of the present application is described here:

[0044] An endoscope is a commonly used medical device, which is an inspection device that can directly enter the natural ducts of the human body and can provide sufficient diagnostic information for the surgeon to treat diseases.

[0045] During the process of treating kidney stones, generally, an endoscope and a negative pressure aspiration sheath need to be used in cooperation. Among them, the endoscope provides a delivery channel, and the delivery channel is used to deliver water and deliver a lithotripsy optical fiber or a stone retrieval basket, etc. Water can pass through the delivery channel to be sent into the kidney, and the water and stones are sucked out of the kidney through the suction channel of the negative pressure aspiration sheath.

[0046] Such as Figure 1As shown, in the prior art, when the insertion part 110 cooperates with the negative pressure suction sheath (sheath tube 20), the insertion part 110 will occupy part of the space of the negative pressure suction sheath (sheath tube 20), which will result in extremely limited space left for the suction channel 310. And since the end face of the insertion part 110 is usually a circular structure, this will cause the end face shape of the suction channel 310 to be irregular, resulting in differences in the dimensions of various parts of the end face of the suction channel. During the process of sucking the calculus, it is easy to get stuck at the small end face position of the suction channel.

[0047] In addition, when the negative pressure connected to the rear end of the negative pressure suction sheath (sheath tube 20) is constant, due to the existence of a small-sized area in the end face of the aforementioned suction channel 310, this area is not helpful for sucking the calculus and there is also a possibility of side effects. However, this area shares the negative pressure from the rear end of the negative pressure suction sheath (sheath tube 20), so this part of the negative pressure is not fully utilized.

[0048] In either case, it will lead to a significant reduction in the efficiency of sucking the calculus.

[0049] Based on this, the inventor provides a distal member, an endoscope and a visual mirror sheath instrument. A blocking member is arranged at the distal end of the body of the distal member, and the blocking member is used to block a partial area of the far port of the suction channel formed by the insertion of the body and the object member, so that the negative pressure suction force from the distal end to the proximal end in the suction channel can be increased, which is beneficial to improving the efficiency of sucking the calculus.

[0050] The following combines the attached Figures 1 to 14 , and through specific embodiments and their application scenarios, a distal member 1, an endoscope 10 and a visual mirror sheath instrument 2 provided by the present application are described in detail.

[0051] Please also refer to Figures 1 - 7 , the embodiment of the present application provides a distal member 1. The distal member 1 can be used to cooperate with or form an endoscope 10. The distal member 1 can include: a body and a blocking member 70.

[0052] The body can extend from the distal end to the proximal end along the longitudinal axis. The body can be used to be inserted and matched with the object member. A shuttle channel 30 extending from the distal end to the proximal end along the longitudinal axis is arranged inside one of the body and the object member, and the other is used to be inserted into the shuttle channel 30 and can move along the extending direction of the shuttle channel 30. The insertion and matching gap between the body and the object member forms a suction channel 310.

[0053] It should be noted that the embodiments of the present application do not limit the specific form of the main body. For example, in one implementation, the main body can be the sheath tube 20, and correspondingly, the object component can be the insertion part 110. Another example is that in another implementation, the main body can be the insertion part 110, and correspondingly, the object component can be the sheath tube 20, which can be specifically set according to the actual situation.

[0054] The blocking component 70 can be arranged at the distal end of the main body, and is used to partially block a part of the distal port of the suction channel 310 at the distal port of the shuttle channel 30 to form a suction port, so that the negative pressure suction force from the distal end to the proximal end in the suction channel 310 converges at the suction port. That is to say, in this embodiment, the suction port can converge the negative pressure suction force from the distal end to the proximal end in the suction channel 310, which can make the negative pressure suction force more concentrated, and thus is beneficial to sucking stones.

[0055] Please refer to Figures 8 - 10 , it should be noted that the embodiments of the present application do not limit the specific structure of the suction channel 310. For example, in some implementations, the end face of the object component is usually a circular end face, and the end face of the main body is usually also a circular end face. Therefore, the end face of the suction channel 310 can be the remaining part after removing a small circular end face from a large circular end face, that is, a structure similar to a crescent shape or an annular structure. The specific end face shape of this part may change as the main body moves within the object component. During the movement of the main body relative to the object component, there may be a narrow area, which is not conducive to sucking stones.

[0056] Therefore, in this embodiment, after the blocking component 70 blocks a part of the suction channel 310, the suction efficiency of the suction channel 310 can be improved. The specific blocked area is the narrow area on the end face of the suction channel 310, and the large-sized area is reserved to facilitate better sucking of stones.

[0057] In one implementation, the blocking component 70 can be arranged to converge the negative pressure suction force from the distal end to the proximal end in the suction channel 310 at the suction port in a continuous area that is continuous along the circumference of the main body. That is to say, in this implementation, the suction channel 310 is a continuous area and there is only one suction channel 310. Therefore, this can avoid the situation where stones are stuck between adjacent suction channels 310, and thus is beneficial to improving the suction efficiency of stones.

[0058] For example, in this embodiment, after being blocked by the blocking member 70, the cross-section of the suction channel 310 is formed by two relatively large arcs and two relatively small arcs arranged oppositely. It should be noted that in this embodiment, the minimum dimension of the distance between the main body and the object member, that is, the minimum dimension of the suction channel 310, is greater than or equal to 4 mm. For example, it can be 4 mm, 4.5 mm, 5 mm, etc. This can enable the suction channel 310 to suck most of the calculi and prevent the suction channel 310 from getting stuck or blocked during the process of sucking calculi.

[0059] In a preferred implementation manner, the position with the maximum radial dimension of the mating clearance between the main body and the object member is located in the continuous region, which can define the maximum passing capacity of the suction channel 310 and reduce the possibility of the suction channel 310 being blocked by calculi.

[0060] Specifically, the maximum radial dimension of the mating clearance between the main body and the object member is the absolute value of the difference in diameters between the main body and the object member. When the main body and the object member are not in contact and are not coaxial, the suction channel 310 surrounds the outer periphery of one of the main body and the object member located inside. At this time, there is a maximum value and a minimum value for the dimension of the mating clearance between the main body and the object member in the radial direction. Since the position with the largest dimension of the mating clearance between the main body and the object member in the radial direction can suck calculi better than the position with the smallest dimension of the mating clearance between the main body and the object member in the radial direction, the blocking member 70 can block a partial area of the outer periphery of one of the main body and the object member located inside and retain the position with the maximum radial dimension of the mating clearance between the main body and the object member, which can further improve the suction efficiency of calculi.

[0061] Please continue to refer to Figure 9 and Figure 10 , it can be understood that since the movement of one of the main body and the object member located in the shuttle channel 30 in the shuttle channel 30 in the radial direction of the shuttle channel 30 will also affect the dimension of the end face of the suction channel 310, specifically, the dimension of a partial area of the end face of the suction channel 310 will become larger or smaller as the main body moves, which is also not conducive to sucking calculi. In an implementation manner, the main body and the object member are limited in the radial direction of the shuttle channel 30, and one of the main body and the object member is attached to the inner surface of the other, which can ensure that the dimension of the suction channel 310 is always at the maximum value, and in this implementation manner, the position of the suction channel 310 will not change, thus being more conducive to sucking calculi.

[0062] The embodiments of the present application also do not limit the specific position and specific shape structure of the blocking member 70. For example, in one embodiment, the blocking member 70 may be located in the shuttle channel 30 and extend from the axial direction with a smaller gap between the main body and the object member to the axial direction with a larger gap. It can be understood that since the main body and the object member are in an insertion combination, the blocking member 70 can wrap around one of the main body and the object member located in the shuttle channel 30. In addition, the embodiments of the present application also do not limit the connection manner between the blocking member 70 and the main body or the object member. For example, it may be integrally formed or detachably connected, etc., and can be specifically set according to the actual situation.

[0063] Further, in one embodiment, the blocking member 70 can wrap around one of the main body and the object member located in the shuttle channel 30 and cross the first axis of one of the main body and the object member located in the shuttle channel 30, where the first axis is the perpendicular line in the common diameter direction on the distal end surface of the main body and the object member. That is to say, in this embodiment, the blocking member 70 can also play a fixing role on one of the main body and the object member located in the shuttle channel 30.

[0064] Please refer to Figures 8 - 12 , in some embodiments, the distal member 1 may further include a telescopic tube 40. The telescopic tube 40 can be connected to the main body, and the telescopic tube 40 can be movably arranged in the suction channel 310 and selectively extend out of the distal port of the suction channel 310. That is to say, the operator can operate the distal member 1 and control the telescopic tube 40 to extend out of the suction channel 310 and abut the telescopic tube 40 against the stone. This can facilitate the lithotripsy operation on the stone, and when the stone is broken, the vortex travel can be shortened, and thus the stone suction efficiency can be greatly improved.

[0065] It should be noted that, in this embodiment, the tube wall of the telescopic tube 40 can surround along the boundary of the aforementioned continuous region, which can eliminate the gap between the telescopic tube 40 and the suction channel 310, and thus ensure that the size of the telescopic tube 40 is at the maximum value, which is beneficial to improving the stone suction efficiency.

[0066] For the convenience of description, the following will separately describe in detail the two cases where the main body is the sheath tube 20 and the main body is the insertion part 110. In one embodiment, the main body is the sheath tube 20 and the object member is the insertion part 110. The main body is sleeved on the periphery of the object member, and the shuttle channel 30 can be arranged inside the main body. Please refer to Figure 13 and Figure 14 , specifically, in one embodiment, the main body may have a negative pressure connection nozzle 210. The negative pressure connection nozzle 210 can be at the proximal end of the main body. The negative pressure connection nozzle 210 can communicate with the suction channel 310, and the negative pressure connection nozzle 210 can be used to connect with an external device providing negative pressure.

[0067] Referring to the foregoing, please refer here to Figure 11 and Figure 12 , further, in one embodiment, the telescopic tube 40 may have a notch 410, the notch 410 may communicate with the suction channel 310, the notch 410 may selectively extend out of the distal port of the suction channel 310, the notch 410 may face the object member, and the notch 410 may also be used to suck stones, so that both the end face and the side face of the telescopic tube 40 may have suction force, thereby improving the efficiency of sucking stones. At the same time, the areas that the end face of the telescopic tube 40 and the notch 410 can radiate to are different, so there will be no waste of the negative pressure at the rear end.

[0068] In a more specific embodiment, the notch 410 may also communicate with the distal end face of the telescopic tube 40, that is, in this embodiment, the notch 410 may be used to increase the suction range of the end face of the telescopic tube 40. At the same time, in this embodiment, there is only one path for the telescopic tube 40 to suck stones. Compared with the foregoing embodiment, this can make the negative pressure provided at the rear end of the sheath tube 20 more concentrated and not dispersed. It should be noted that the specific shape and structure of the notch 410 are not limited in the embodiments of the present application. For example, in one embodiment, the notch 410 may be set as a directional notch 410, and in another embodiment, the notch 410 may also be set as a fan-shaped notch 410, etc., which can be specifically set according to the actual situation.

[0069] Please refer again to Figure 13 and Figure 14 , in another embodiment, the distal member 1 may further include a driving member 60, the driving member 60 may be connected to the telescopic tube 40, and the driving member 60 may be used to drive the telescopic tube 40 to move along the axial direction of the suction channel 310, and to make the telescopic tube 40 extend out of the distal port of the suction channel 310 or to receive the telescopic tube 40 in the suction channel 310. The specific form and structure of the driving member 60 are not limited in the embodiments of the present application. For example, in some embodiments, the driving member 60 may be in the form of a rod to drive the telescopic tube 40 to move, and in other embodiments, the driving member 60 may also be a motor or a cylinder, etc., which can be specifically set according to the actual situation.

[0070] In one embodiment, the surface of the proximal end of the telescopic tube 40 and / or the proximal surface of the sealing member 70 may be inclined. For the convenience of description, the foregoing inclined surface will be defined as the first surface 50 hereinafter.

[0071] It can be understood that during the installation of the body on the object component, it is necessary to extend from the proximal end of the object component and protrude from the distal end of the object component. The telescopic tube 40 is usually only arranged near the distal end of the object component and does not extend towards the proximal end of the object component to save materials and reduce costs. Therefore, the proximal end of the telescopic tube 40 is arranged inside the object component. Since the structural stiffness of the body is relatively low, after the body is inserted into the object component, it is difficult to control the specific orientation of the distal end of the body, and thus there may be a problem that the distal end of the body abuts against the proximal end of the telescopic tube 40, making it difficult for the body to be inserted.

[0072] Therefore, in this embodiment, setting the first surface 50 as an inclined surface can enable the first surface 50 to play a guiding role for the object component, which can facilitate the insertion of the object component to the designated position of the body. At the same time, due to the inclined setting of the first surface 50, less material of the telescopic tube 40 can be used, and thus the cost can be reduced.

[0073] In another implementation manner, the body is the insertion part 110, the object component is the sheath tube 20, the object component is sleeved on the periphery of the body, and the shuttle channel 30 can be arranged inside the object component. As described above, further, in one implementation manner, the telescopic tube 40 can have a notch 410. In this implementation manner, only the body and the object component are swapped, and the specific position and form of the notch 410 can refer to the specific description in the foregoing implementation manner, which will not be elaborated here. It can be understood that a driving member 60 can also be arranged in this implementation manner, and the specific form of the driving member 60 can also refer to the specific description in the foregoing implementation manner, which will not be elaborated here.

[0074] Please refer to again Figure 9 and Figure 10 , in this implementation manner, the body can include an illumination module 150, a lens module 130, and an instrument channel 140. The illumination module 150 and the lens module 130 can be arranged inside the body and extend to the distal end face of the body. The illumination module 150 can be used to emit light, and the lens module 130 can be used to acquire images. The instrument channel 140 can penetrate the body and is used for a medical instrument to protrude from the end face of the body. The specific form of the medical instrument is not limited in this application. For example, it can be a stone retrieval net or an optical fiber, etc. At the same time, the instrument channel 140 can also be used for water injection. When the surgeon performs a calculus operation on the patient, water can be injected into the lesion of the patient through the instrument channel 140, and then the water and the calculus can be discharged together through the suction channel 310.

[0075] The embodiments of the present application do not limit the arrangement of the lighting module 150, the lens module 130, and the instrument channel 140 on the end face of the insertion portion 110. For example, in one embodiment, there may be two lighting modules 150, and the two lighting modules 150 may be respectively arranged on both sides of the lens module 130, so that the operator can observe the conditions on both sides of the lens module 130 more clearly. At the same time, the lens module 130 and the instrument channel 140 may be arranged on the same diameter of the body, so as to make full use of the space on the distal end face of the body, thereby facilitating the reduction of the size of the body, etc., and specifically can be set according to the actual situation.

[0076] Further, in a more specific embodiment, in the radial direction of the shuttle channel 30, the instrument channel 140 may be arranged farther away from the suction channel 310 than the lens module 130 and the lighting module 150. In this way, after the instrument channel 140 injects water into the lesion of the patient, there is sufficient time and space for movement to take out the stones in the patient's body, avoiding the situation that the water in the instrument channel 140 is directly sucked away by the suction channel 310 due to the instrument channel 140 being too close to the suction channel 310, thereby making it difficult to suck out the stones. Therefore, the above settings of the instrument channel 140, the lens module 130, and the lighting module 150 can play the role of promoting the suction of stones.

[0077] Please refer to again Figure 11 , in one embodiment, the body can be movably arranged in the radial direction of the object member, so that the body can selectively extend out of the end face of the object member, which can make the applicability of the distal member 1 higher. The operator can selectively extend the body out of the end face of the object member according to different situations and select a more optimal way to perform the operation. It can be understood that in this embodiment, the axial length of the sealing member 70 needs to be greater than or equal to the length that the body can extend out of the object member to avoid the failure of the sealing member 70.

[0078] The embodiments of the present application further provide an endoscope 10, which may include a handle portion 120 and the distal member 1 as described above. Among them, the body is the insertion portion 110, and the object member is the sheath 20. The handle portion 120 can be connected to the body. In a more specific embodiment, the handle portion 120 can be detachably connected to the body, for example, by snap connection or threaded connection, etc., and specifically can be set according to the actual situation. Since the endoscope 10 provided by the embodiments of the present application applies the aforementioned distal member 1, it can also play the role of improving the suction efficiency of the suction channel 310.

[0079] Please refer to again Figure 13, embodiments of the present application further provide a visual mirror sheath instrument 2, which may include a sheath tube 20 and the aforementioned endoscope 10. The sheath tube 20 may be sleeved on the outer surface of the insertion portion 110. Since the visual mirror sheath instrument 2 provided by the embodiments of the present application applies the aforementioned distal member 1, it can also improve the suction efficiency of the suction channel 310.

[0080] It should be noted that in this text, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including that element.

[0081] In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed. It may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0082] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention.

Claims

1. A distal member, characterized in that: include: A body, the body extending from the distal end to the proximal end along the longitudinal axis, the body being used to be mated with the object component, one of the body and the object component is provided with a shuttle channel extending from the distal end to the proximal end along the longitudinal axis, the other being used to be inserted into the shuttle channel and movable along the extension direction of the shuttle channel, and a mating gap between the body and the object component forming a suction cavity; as well as A blocking member is disposed at the distal end of the body and is used to block a portion of the distal end of the suction cavity at the distal end of the shuttle channel to form a suction port, so that the negative pressure suction force from the distal end toward the proximal end in the suction cavity converges at the suction port in a continuous area that is circumferentially coherent with the body.

2. The distal member according to claim 1, characterized in that The maximum radial dimension of the mating gap is located within the continuous area.

3. The distal member according to claim 2, characterized in that The distal component also includes: a telescopic tube, which is movably arranged at the distal end of the suction cavity and connected to the main body, the telescopic tube extends along and passes through the suction cavity, the telescopic tube is movably arranged in the suction cavity and on the side of the blocking component, and the telescopic tube can selectively extend out of the suction port.

4. The distal member according to claim 3, characterized in that The tube wall of the telescopic tube surrounds the boundary of the continuous area.

5. The distal member according to claim 3, characterized in that: When the body is a sheath provided with the shuttle channel, and the target component is an insertion portion of an endoscope, the wall of the telescopic tube is provided with a notch penetrating the wall, the notch is communicated with the suction cavity, the notch can selectively extend out of the distal end of the suction cavity, and the notch faces the target component; And / or, when the body is a sheath tube provided with the shuttle channel and the object component is an insertion portion of an endoscope, the proximal surface of the telescopic tube and / or the proximal surface of the blocking component are inclined to guide the object component to be inserted into the distal end of the body; And / or, when the main body is a sheath tube in which the shuttle channel is provided and the object component is an insertion portion of an endoscope, the distal component further comprises a driving member, wherein the driving member is connected to the telescopic tube, and the driving member is used to drive the telescopic tube to move along the axial direction of the suction cavity, and to make the telescopic tube extend out of the distal end of the suction cavity or to make the telescopic tube be received in the suction cavity.

6. The distal member according to claim 3, characterized in that When the body is an insertion portion of an endoscope and the object component is a sheath tube in which the shuttle channel is provided, the body comprises: a lens module and an instrument channel, wherein in the radial direction of the shuttle channel, the instrument channel is provided away from the suction cavity compared to the lens module; And / or, when the body is an insertion portion of an endoscope and the object component is a sheath tube in which the shuttle channel is provided, the tube wall of the telescopic tube has a notch penetrating the tube wall, the notch is communicated with the suction cavity, the notch can selectively extend out of the distal end of the suction cavity, the notch faces the object component, and the notch is arranged toward the center line of the shuttle channel; And / or, when the main body is the insertion part of an endoscope and the object component is a sheath tube in which the shuttle channel is set, the distal component also includes a driving member, which is connected to the telescopic tube, and the driving member is used to drive the telescopic tube to move along the axial direction of the suction cavity, and to make the telescopic tube extend out of the distal end of the suction cavity or to make the telescopic tube be received in the suction cavity.

7. The distal member according to claim 1 or 2, characterized in that: The body and the object member are arranged at upper limits in the radial direction of the shuttle channel, and one of the body and the object member is attached to the inner surface of the other; And / or, the blocking member is located in the shuttle channel and extends from the circumferential direction of the small gap between the main body and the object member to the circumferential direction of the large gap, and crosses the first axis of one of the main body and the object member located in the shuttle channel, and the first axis is a perpendicular line of the common diameter direction on the distal surfaces of the main body and the object member.

8. An endoscope, characterized in that: It comprises a handle portion and a distal member according to any one of claims 4 to 7, wherein the handle portion is connected to the body.

9. A visual scope sheath device, characterized in that: It comprises a sheath tube and the endoscope as claimed in claim 8.

Images