Wetting assembly for wetting insertion tube and medical device

Abstract

The invention discloses a wetting assembly for wetting an insertion tube and a medical device, and belongs to the technical field of medical instruments. The insertion pipe is used for being inserted into the cavity channel, the wetting assembly is provided with a containing cavity, the containing cavity is used for storing liquid and provided with an opening, and the liquid stored in the containing cavity can flow out through the opening; the wetting assembly is used for being movably matched with the insertion pipe, and under the condition that the wetting assembly is assembled to the insertion pipe, the insertion pipe is located on a flowing path of liquid flowing out of the opening. The wetting assembly is movably matched with the insertion pipe, the liquid is stored in the containing cavity in the wetting assembly, under the condition that the wetting assembly is assembled to the insertion pipe, the liquid in the containing cavity can flow out of the opening of the containing cavity, and the insertion pipe is located outside the flowing path of the liquid, so that the surface of the insertion pipe can be coated with the liquid; therefore, the outer wall of the insertion tube can be kept in a wet state, friction force between the outer wall of the insertion tube and the inner wall of the cavity is reduced, and insertion resistance of the insertion tube is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, and in particular to a wetting assembly for wetting an insertion tube and a medical device. BACKGROUND

[0002] In related art, the surfaces of instruments with insertion tubes, such as endoscopes and ureteral sheaths, are coated with a hydrophilic coating. Before use, the hydrophilic coating needs to be activated by soaking, so as to reduce the friction between the instrument and the inner wall of the body cavity, protect the inner wall of the cavity, and reduce the insertion resistance.

[0003] However, in actual use, during some surgical procedures, as the use time of the instrument increases, the friction between the insertion tube and the inner wall of the body cavity increases, resulting in an increase in the insertion resistance of the instrument, which affects the intraoperative operation of the doctor. SUMMARY

[0004] The purpose of the present application is to provide a wetting assembly for wetting an insertion tube and a medical device, which solves the above technical problems existing in the prior art.

[0005] The present application is implemented as follows: In a first aspect, the present application provides a wetting assembly for weting an insertion tube, the insertion tube being used for insertion into a cavity, the wetting assembly having a containing cavity, the containing cavity being used for storing a liquid, and the containing cavity having an opening, the liquid stored in the containing cavity being able to flow out through the opening; the wetting assembly is used for active cooperation with the insertion tube, and in the case where the wetting assembly is assembled to the insertion tube, the insertion tube is located on the flow path of the liquid flowing out of the opening.

[0006] In a second aspect, the present application provides a medical device, comprising an insertion tube and the wetting assembly provided in the first aspect, the wetting assembly being used for sleeving outside the insertion tube.

[0007] The technical solution provided by the present application can achieve the following beneficial effects: In the present application, the wetting assembly is arranged to be active with the insertion tube, and the containing cavity in the wetting assembly is used to store a liquid, in the case where the wetting assembly is assembled to the insertion tube, the liquid in the containing cavity can flow out from the opening of the containing cavity, and the insertion tube is located outside the flow path of the liquid, so that the liquid can be coated on the surface of the insertion tube, so that the outer wall of the insertion tube can be kept in a wet state, the friction between the outer wall of the insertion tube and the inner wall of the cavity is reduced, and the insertion resistance of the insertion tube is reduced.

[0008] In addition, the wetting component cooperates with the insertion tube. The wetting component can be put on the position of the insertion tube close to the cavity opening to moisten the portion of the insertion tube exposed outside the cavity, thereby ensuring that even after the insertion tube is used for a long time, the portion of the insertion tube adjacent to the cavity opening can still remain moist, thereby avoiding the situation where the friction between the insertion tube and the cavity is large when the position of the insertion tube relative to the cavity is adjusted, resulting in increased insertion resistance of the insertion tube and affecting the doctor's operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0010] Figure 1 This is a schematic diagram of the overall structure of the wetting assembly provided in some embodiments of the present application from a first perspective; Figure 2 is a schematic diagram of the overall structure of the wetting assembly provided in some embodiments of the present application from a second perspective; Figure 3 is a cross-sectional view of a wetting assembly provided by some embodiments of the present application; Figure 4 is a schematic diagram of the disassembly of the wetting component provided in some embodiments of the present application; Figure 5 is a schematic diagram of the cooperation between the wetting assembly and the insertion tube provided in some embodiments of the present application; Figure 6 is a cross-sectional view of the mating structure of the wetting assembly and the insertion tube provided in some embodiments of the present application; Figure 7 This application is about Figure 6 Detail of point A.

[0011] In the figure: 10-wetting component, 100-adsorption layer, 110-insertion channel, 200-housing, 210-through hole, 220-sub-housing, 230-resetting member, 240-pressing portion, 250-slider, 260-slide groove, 261-assembly groove, 262-connecting groove, 263-guide groove, 20-insertion tube. DETAILED DESCRIPTION

[0012] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described in detail below. Obviously, the described embodiments are only some, but not all of the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the protection scope of the present application.

[0013] In the embodiments of the present application, "proximal end" and "distal end" refer to the relative positions of the endoscope and its accessories in the use environment relative to the user, wherein the end closer to the user is designated as the "proximal end", and the end farther from the user is designated as the "distal end".

[0014] In the use process of the instruments with insertion tubes such as endoscopes and ureteral sheaths, even if the insertion tube has woken up the hydrophilic coating by soaking before use, after a long time of use, the insertion resistance of the insertion tube will increase when adjusting the relative positions of the insertion tube and the cavity, especially when the insertion tube is further inserted into the cavity, which affects the intraoperative operation of the doctor.

[0015] The inventors have found that in the use process of the insertion tube, the hydrophilic coating of the part of the insertion tube exposed outside the cavity will gradually dry, thereby causing the insertion resistance of the insertion tube to increase when further inserted into the cavity.

[0016] Therefore, the embodiments of the present application provide a wetting assembly for wetting an insertion tube. The insertion tube 20 is used for insertion into a cavity. The insertion tube 20 can be a curved tube of an endoscope, a sheath tube of a ureteral sheath, or an insertable tube segment of other instruments. For example, the cavity into which the insertion tube 20 is inserted can be, but is not limited to, a natural cavity, an artificial cavity of a human or animal body, and a gap or hole of a device product.

[0017] The wetting assembly 10 can refer to Figures 1 to 4 As shown, the wetting assembly 10 has a receiving cavity, which is a cavity structure, for storing liquid. The receiving cavity has an opening, and the stored liquid in the receiving cavity can flow out through the opening. The wetting assembly 10 is used in active cooperation with the insertion tube 20. When the wetting assembly 10 is assembled to the insertion tube 20, the insertion tube 20 is located on the flow path of the liquid flowing out of the opening.

[0018] In some embodiments, the receiving cavity can be pre-provided with a liquid for lubrication to directly lubricate the outer wall of the insertion tube 20. In other embodiments, the liquid for lubrication in the receiving cavity can be a liquid for waking up the hydrophilic coating on the surface of the insertion tube 20, and the liquid can be entered into the receiving cavity in the process of waking up the hydrophilic coating on the surface of the insertion tube 20 by immersing the insertion tube 20 in the liquid.

[0019] The wetting assembly 10 stores liquid in the accommodating cavity. When the wetting assembly 10 is assembled to the insertion tube 20, the insertion tube 20 is located in the flow path of the liquid flowing out of the accommodating cavity through the opening, so that the liquid can be coated on the surface of the insertion tube 20 to wet the insertion tube 20.

[0020] In the embodiments provided in the present application, the wetting assembly 10 and the insertion tube 20 are flexibly arranged, and the movement of the wetting assembly 10 relative to the insertion tube 20 can be controlled to wet the pipe section of the insertion tube 20 that needs to be wetted. The wetting assembly 10 can be used to wet the insertion tube 20 during the entire use process of the insertion tube 20. The use of the wetting assembly 10 enables the outer wall of the insertion tube 20 to maintain a wet state, thereby reducing the friction between the outer wall of the insertion tube 20 and the inner wall of the cavity, and reducing the insertion resistance of the insertion tube 20.

[0021] During the use of the insertion tube 20, the wetting assembly 10 can be arranged at a position close to the cavity opening of the insertion tube 20. The wetting assembly 10 can wet the part of the insertion tube 20 exposed outside the cavity opening, so as to ensure that this part of the pipe section is in a wet state. When it is necessary to further extend the insertion tube 20 into the cavity, the friction between the insertion tube 20 and the cavity can be reduced, and the doctor can more easily operate the insertion tube 20.

[0022] The movable connection between the wetting assembly 10 and the insertion tube 20 can be that the wetting assembly 10 is connected to the insertion tube 20 in advance. After the insertion tube 20 is inserted into the target cavity, the wetting assembly 10 is located outside the cavity to wet the part of the insertion tube 20 at the cavity opening. The wetting assembly 10 can also be assembled to the insertion tube 20 before further extending the insertion tube 20, and then the wetting assembly 10 is used to wet the insertion tube 20.

[0023] In some embodiments of the present application, the wetting assembly 10 can be arranged on the insertion tube 20 in the following manners. Figure 3 and Figure 4 As shown in FIGS. 1 to 3, the wetting assembly 10 includes an adsorption layer 100 arranged in the accommodating cavity. The adsorption layer 100 is made of a porous material, and the adsorption layer 100 is used to adsorb the liquid stored in the accommodating cavity. The adsorption layer 100 is a porous material and has a plurality of pores. The pores in the adsorption layer 100 can store liquid and have a certain adsorption property for the liquid. The adsorption layer 100 has a plurality of pores, and the overall adsorption layer 100 is relatively soft. The adsorption layer 100 can reduce the probability of damage to the outer wall surface of the insertion tube 20 caused by the friction between the adsorption layer 100 and the insertion tube 20. In addition, the adsorption layer 100 can be squeezed. By squeezing the adsorption layer 100, the flow of the liquid can be controlled, thereby prolonging the use time of the wetting assembly 10. The adsorption layer 100 can be made of sponge or other materials with a porous structure, such as cotton.

[0024] In some preferred embodiments of the present application, the wetting assembly 10 can be arranged on the insertion tube 20 in the following manners. Figure 3and Figure 4 As shown in FIG. 1, the wetting assembly 10 further comprises a shell 200, a containing cavity is arranged in the shell 200, the adsorption layer 100 is located in the shell 200, the hardness of the shell 200 is greater than the hardness of the adsorption layer 100, the shell 200 is used to movably wrap outside the insertion tube 20, and the shell wall of the shell 200 is provided with a plurality of through holes 210. The shell 200 can move along the axial direction of the insertion tube 20 outside the insertion tube 20, and the position of the adsorption layer 100 is adjusted.

[0025] The hardness of the shell 200 is greater than the hardness of the adsorption layer 100, which can play a certain protective role on the adsorption layer 100, avoiding the case that the protective layer is accidentally extruded to discharge liquid and affect the wetting effect on the insertion tube 20. At the same time, the shell 200 can also cover the adsorption layer 100, reducing the evaporation of the liquid adsorbed by the adsorption layer 100.

[0026] The through holes 210 on the shell wall of the shell 200 are mainly used to provide a flow channel for the liquid in the adsorption layer 100. In the case of assembling the wetting assembly 10 to the insertion tube 20, the insertion tube 20 and the wetting assembly 10 are soaked in clean water as a whole, and the clean water can enter the containing cavity through the through holes 210 on the shell 200 and be adsorbed by the adsorption layer 100.

[0027] In some specific embodiments, the adsorption layer 100 is limited and matched with the shell 200 in the axial direction of the shell 200, so that the position of the adsorption layer 100 can be directly controlled by controlling the movement of the shell 200, thereby avoiding the separation of the adsorption layer 100 and the shell 200.

[0028] In some preferred embodiments of the present application, referring to Figure 3 As shown in FIG. 1, the adsorption layer 100 encloses to form an insertion channel 110 for the insertion tube 20 to pass through. When the adsorption layer 100 is used with the insertion tube 20, the adsorption layer 100 is wrapped outside the insertion tube 20, and referring to Figure 7 As shown in FIG. 1, the adsorption layer 100 moves along the axial direction of the insertion tube 20, which can simultaneously wet one circle of the insertion tube 20, improve the wetting effect, and also increase the contact area of the adsorption layer 100 with the insertion tube 20, thereby improving the wetting efficiency of the wetting assembly 10 on the insertion tube 20.

[0029] Further, the inner diameter of the insertion channel 110 is smaller than the size of the opening at both ends of the shell 200. The opening at both ends of the shell 200 is used for the insertion tube 20 to pass through, so that the shell 200 can be sleeved to the outside of the insertion tube 20. When the insertion tube 20 is assembled with the wetting assembly 10, because the adsorption layer 100 is sleeved outside the insertion tube 20, and the adsorption layer 100 is located in the accommodation cavity of the shell 200, the insertion tube 20 is also inserted into the shell 200. The inner diameter of the insertion channel 110 is smaller than the size of the opening at both ends of the shell 200. The size of the insertion channel 110 is small, and when the insertion tube 20 is inserted into the wetting assembly 10, the probability that the end of the insertion tube 20 touches the shell 200 is small, which can reduce the probability that the insertion tube 20 is damaged in the assembly process of the insertion tube 20 and the wetting assembly 10. At the same time, in the use process of the wetting assembly 10, it can also prevent the shell 200 from scratching the outer wall of the insertion tube 20, so as to cause the structure of the outer wall of the insertion tube 20 to be damaged. It is also shown that the wetting assembly 10 can also avoid damaging the hydrophilic coating wrapped outside the outer wall of the insertion tube 20.

[0030] In addition, the inner diameter of the insertion channel 110 is smaller than the size of the opening at both ends of the shell 200, so that in the soaking and awakening process of the hydrophilic coating outside the insertion tube 20, the liquid used to soak and awaken the hydrophilic coating can enter the accommodation cavity along the gap between the inner wall of the insertion channel 110 and the outer wall of the insertion tube 20.

[0031] In some embodiments of the present application, reference can be made to Figures 1 to 4 As shown, the shell 200 includes two coaxially sleeved sub-shells 220, and both of the two sub-shells 220 are limitedly matched with the adsorption layer 100 in the first direction, the first direction is the axial direction of the shell 200, and the two sub-shells 220 are slidingly matched along the first direction to compress the adsorption layer 100 located in the shell 200.

[0032] The two sub-shells 220 can slide along the first direction, and move closer to each other or move away from each other. At the same time, because both of the two sub-shells 220 are limitedly matched with the adsorption layer 100 in the first direction, the adsorption layer 100 can be driven to move correspondingly during the process that the two sub-shells 220 move closer to each other or move away from each other, so that the adsorption layer 100 is compressed when the two sub-shells 220 move closer to each other.

[0033] The two sub-housings 220 can compress the adsorption layer 100, so as to increase the speed of the adsorption layer 100 in absorbing liquid. In the case of immersing the wetting assembly 10 into liquid, the two sub-housings 220 move relative to each other to compress the adsorption layer 100, so as to expel the air in the pores of the adsorption layer 100. Since the air in the pores of the adsorption layer 100 has been expelled, the compressed adsorption layer 100 can quickly absorb liquid in the process of recovering, so as to increase the speed of the adsorption layer 100 in absorbing liquid. Meanwhile, the probability of the adsorption layer 100 not being immersed by liquid can be reduced, and the adsorption effect of the adsorption layer 100 on liquid can be improved.

[0034] In addition, in the process of wetting the insertion tube 20 by using the wetting assembly 10, the two sub-housings 220 can be controlled to compress the adsorption layer 100, so as to expel the liquid absorbed by the adsorption layer 100, thereby wetting the insertion tube 20 and improving the wetting effect on the insertion tube 20.

[0035] In some preferred embodiments of the present application, the ends of the two sub-housings 220 away from each other are limited by the adsorption layer 100 in the first direction. With the mutual approach of the two sub-housings 220, the adsorption layer 100 can be compressed as a whole, so as to improve the compression effect on the adsorption layer 100, thereby improving the efficiency of the adsorption layer 100 in absorbing liquid and improving the coating efficiency of the adsorption layer 100 on the insertion tube 20.

[0036] In some other embodiments of the present application, the inner walls of the two sub-housings 220 can be provided with protrusions, which are clamped in the adsorption layer 100. With the movement of the sub-housings 220, the protrusions can drive the adsorption layer 100 to move, so as to achieve the effect of compressing the adsorption layer 100.

[0037] In some preferred embodiments, the outer housing 200 further comprises a reset member 230. As shown in FIGS. 1, 2 and 3, the reset member 230 is connected between the two sub-housings 220, and the reset member 230 is used to drive the two sub-housings 220 to reset. In the case that an external force drives the two sub-housings 220 to approach each other, the reset member 230 is compressed. The compressed reset member 230 can drive the two sub-housings 220 to move away from each other, so as to reset the two sub-housings 220. In some specific embodiments, the reset member 230 can be a spring, which is sleeved outside the adsorption layer 100, so as to avoid direct contact between the spring and the insertion tube 20. Figure 3 Figure 4

[0038] ​​In some embodiments, the wetting assembly 10 is sleeved on the insertion tube 20 for use, part of the insertion tube 20 extends into the cavity, and part of the insertion tube 20 is located outside the cavity. The wetting assembly 10 is sleeved on the part of the insertion tube 20 located outside the cavity. The wetting assembly 10 is mainly used to wet the part of the insertion tube 20 close to the cavity opening, so as to avoid the insertion tube 20 not wetted directly inserted into the cavity. Therefore, in actual use, the wetting assembly 10 is usually directly close to the cavity opening to ensure that the part of the insertion tube 20 close to the cavity is always in a wet state.

[0039] Reference Figures 1 to 4 As shown in the drawings, one of the two sub-housings 220 is connected with a pressing portion 240 at the end away from the other sub-housing 220. The pressing portion 240 is used to expand the size of the end face of the sub-housing 220, and the pressing portion 240 is located at the distal end of the outer shell 200. In use of the wetting assembly 10, the distal end of the wetting assembly 10 is the end away from the operator. The wetting assembly 10 is sleeved on the insertion tube 20, and the distal end of the outer tube is close to the corresponding cavity opening of the insertion tube 20 and directly abuts against the skin around the cavity opening. Since the pressing portion 240 is arranged to expand the size of the end face of the sub-housing 220, the stress per unit area of the skin around the cavity opening can be reduced, thereby improving the comfort of the human body.

[0040] In the actual use of the wetting assembly 10, one end of the wetting assembly 10 abuts against the skin around the cavity opening. In the case of needing to improve the wetting effect of the wetting assembly 10, the sub-housing 220 located at the proximal end of the outer shell 200 is pressed to drive the sub-housing 220 to move close to the sub-housing 220 located at the distal end of the outer shell 200, thereby extruding the adsorption layer 100. Preferably, the end face of the sub-housing 220 located at the proximal end of the outer shell 200 is also provided with a pressing portion 240, which is more convenient for the operator to control the relative positions of the two sub-housings 220.

[0041] In some preferred embodiments of the present application, among the two sub-housings 220, the sliding resistance between one of the two sub-housings 220 adjacent to the proximal end side of the insertion tube 20 and the insertion tube 20 is a first sliding resistance, and the sliding resistance between the other of the two sub-housings 220 away from the proximal end side of the insertion tube 20 and the insertion tube 20 is a second sliding resistance. The first sliding resistance is greater than the second sliding resistance.

[0042] The sub-housing 220 adjacent to the proximal end side of the insertion tube 20 is the sub-housing 220 located at the proximal end of the outer shell 200. The sub-housing 220 away from the proximal end side of the insertion tube 20 is the sub-housing 220 located at the distal end of the outer shell 200. The first sliding resistance is greater than the second sliding resistance, that is, the sub-housing 220 at the proximal end is less likely to move relative to the insertion tube 20, and the sub-housing 220 at the distal end is more likely to move relative to the insertion tube 20.

[0043] In the actual use of the insertion tube 20, when it is necessary to continue to insert the insertion tube 20 into the cavity, the operator controls the forward movement of the insertion tube 20. After the sub-housing 220 is abutted to the cavity, the distal sub-housing 220 cannot continue to move, and the relative movement between the insertion tube 20 and the sub-housing 220 occurs. At the same time, due to the large frictional resistance between the proximal sub-housing 220 and the insertion tube 20, the proximal sub-housing 220 is not easy to move relative to the insertion tube 20, and the proximal sub-housing 220 can move synchronously with the insertion tube 20, so that the proximal sub-housing 220 can gradually approach the distal sub-housing 220, thereby compressing the adsorption layer 100 in the shell 200, so that the liquid adsorbed in the pores of the adsorption layer 100 can be squeezed out and coated on the outside of the insertion tube 20, thereby lubricating the insertion tube 20.

[0044] In this way, when the insertion tube 20 is continuously inserted into the cavity, the wetting assembly 10 can automatically lubricate the insertion tube 20 without additional operation, and the adsorption layer 100 can be directly squeezed by moving the insertion tube 20, thereby further improving the convenience of the operation of the doctor during the operation.

[0045] In some embodiments, the sliding resistance of the two sub-housings 220 approaching each other is a third sliding resistance, and the third sliding resistance is less than the difference between the first sliding resistance and the second sliding resistance.

[0046] In some embodiments, the materials of the two sub-housings 220 are different. Specifically, the friction coefficient between the sub-housing 220 adjacent to the proximal side of the insertion tube 20 and the insertion tube 20 is a first friction coefficient. The friction coefficient between the sub-housing 220 adjacent to the distal side of the insertion tube 20 and the insertion tube 20 is a second friction coefficient, and the first friction coefficient is greater than the second friction coefficient, so that the first sliding resistance is greater than the second sliding resistance.

[0047] In some embodiments, a resistance member is arranged between the sub-housing 220 adjacent to the proximal side of the insertion tube 20 and the insertion tube 20, so that the first sliding resistance is greater than the second sliding resistance. For example, the resistance member can be, but is not limited to, a rubber member.

[0048] Reference Figure 3 and Figure 4As shown, the two sub-housings 220 are provided with sliding structures at the wall surfaces close to each other. The sliding structure includes a sliding block 250 provided on one of the wall surfaces and a sliding groove 260 provided on the other wall surface, the sliding block 250 is slidingly installed in the sliding groove 260, and the sliding block 250 and the end of the sliding groove 260 are limited in cooperation in the first direction to prevent the two sub-housings 220 from separating from each other. The sliding structure is provided between the two sub-housings 220 to improve the smoothness of sliding between the two sub-housings 220, and at the same time, the relative positions of the two sub-housings 220 are limited to avoid the situation that the two sub-housings 220 separate from each other.

[0049] In some preferred embodiments, with reference to Figure 4 As shown, the sliding groove 260 includes an assembly groove 261, a guide groove 263, and a connecting groove 262. The connecting groove 262 communicates the assembly groove 261 and the guide groove 263. One end of the assembly groove 261 is open at the end of the corresponding sub-housing 220 close to the other sub-housing 220. The extension direction of the connecting groove 262 is intersected with the first direction, and the guide groove 263 is extended along the first direction. The end of the sliding block 250 close to the other sub-housing 220 is limited in cooperation with the guide groove 263 in the first direction.

[0050] The sliding block 250 can be directly inserted into the assembly groove 261 from the outside, slide along the assembly groove 261, and move into the guide groove 263 through the connecting groove 262. Since the extension direction of the connecting groove 262 is intersected with the first direction, in the case that the two sub-housings 220 move relative to each other in the first direction, the sliding block 250 will not deviate from the guide groove 263 into the connecting groove 262, thereby ensuring the stability of the sliding connection between the two sub-housings 220.

[0051] The embodiment of the present application provides a medical device, which comprises an insertion tube 20 and the wetting assembly 10 provided by any of the above embodiments, and the wetting assembly 10 is used to be sleeved outside the insertion tube 20. Preferably, the wetting assembly 10 is directly sleeved outside the insertion tube 20 and located at the proximal end region of the insertion tube 20, which can be referred to Figure 5 and Figure 6 As shown. In use, the distal tube segment of the insertion tube 20 needs to be inserted into the cavity. The wetting assembly 10 is arranged at the proximal end region of the insertion tube 20, and after the insertion tube 20 is inserted into the cavity, the wetting assembly 10 can be as close as possible to the cavity opening, avoiding subsequent adjustment of the position of the wetting assembly 10 or excessive adjustment of the position of the wetting assembly 10, thereby simplifying the operation of the wetting assembly 10 and improving the convenience of the operation of the doctor in the operation.

[0052] It should be noted that, in this document, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises a", "comprising", or "comprises" does not, without more constraints, preclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0053] The above description is only specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered by the protection scope of the present application.

Claims

1. A wetting assembly for wetting an insertion tube, characterized in that The insertion tube (20) is used to be inserted into the cavity, the wetting component (10) has a receiving cavity, the receiving cavity is used to store liquid, and the receiving cavity has an opening, and the liquid stored in the receiving cavity can flow out through the opening; The wetting component (10) is used to movably cooperate with the insertion tube (20); when the wetting component (10) is assembled to the insertion tube (20), the insertion tube (20) is located on the flow path of the liquid flowing out of the opening.

2. A wetting assembly for wetting an insertion tube according to claim 1, characterized in that: The wetting component (10) comprises an adsorption layer (100), the adsorption layer (100) is arranged in the accommodating cavity, the adsorption layer (100) is made of a porous material, and the adsorption layer (100) is used to adsorb the liquid stored in the accommodating cavity.

3. A wetting assembly for wetting an insertion tube according to claim 2, characterized in that: The wetting assembly (10) further comprises a shell (200), the accommodating cavity is arranged in the shell (200), the hardness of the shell (200) is greater than the hardness of the adsorption layer (100), the shell (200) is used to be movably mounted on the outside of the insertion tube (20), the adsorption layer (100) is located in the shell (200), and the shell wall of the shell (200) is provided with a plurality of through holes (210); And / or, the adsorption layer (100) encloses and forms an insertion channel (110) for the insertion tube (20) to pass through, and the inner diameter of the insertion channel (110) is smaller than the opening size at both ends of the shell (200).

4. A wetting assembly for wetting an insertion tube according to claim 3, characterized in that: The housing (200) comprises two coaxially sleeved sub-housings (220), both of the sub-housings (220) being positionally engaged with the adsorption layer (100) in a first direction, the first direction being the axial direction of the housing (200), and the two sub-housings (220) being slidably engaged along the first direction to compress the adsorption layer (100) located within the housing (200).

5. A wetting assembly for wetting an insertion tube according to claim 4, characterized in that: The housing (200) further comprises a reset member (230), wherein the reset member (230) is connected between the two sub-housings (220), and the reset member (230) is used to drive the two sub-housings (220) to reset; And / or, a pressing portion (240) is connected to the end surface of one of the sub-shells (220) away from the other sub-shell (220), the pressing portion (240) is used to expand the end surface size of the sub-shell (220), and the pressing portion (240) is located at the distal end of the housing (200); And / or, the ends of the two sub-shells (220) that are away from each other are in position-limiting cooperation with the adsorption layer (100) in the first direction; And / or, in the two sub-shells (220), the sliding resistance between the one adjacent to the proximal end of the insertion tube (20) and the insertion tube (20) is a first sliding resistance, and the sliding resistance between the one away from the proximal end of the insertion tube (20) and the insertion tube (20) is a second sliding resistance, and the first sliding resistance is greater than the second sliding resistance.

6. A wetting assembly for wetting an insertion tube according to claim 4, characterized in that: A sliding structure is provided at the wall surfaces of the two sub-shells (220) close to each other, and the sliding structure includes a slider (250) provided on one of the wall surfaces and a slide groove (260) provided on the other wall surface. The slider (250) is slidably installed in the slide groove (260), and the slider (250) and the end of the slide groove (260) are engaged in a limit position in a first direction to prevent the two sub-shells (220) from separating from each other.

7. A wetting assembly for wetting an insertion tube according to claim 6, characterized in that: The slide groove (260) includes an assembly groove (261), a guide groove (263) and a connecting groove (262), wherein the connecting groove (262) communicates with the assembly groove (261) and the guide groove (263), one end opening of the assembly groove (261) is located at the end of the corresponding sub-shell (220) close to the other sub-shell (220), the extension direction of the connecting groove (262) is arranged to intersect with the first direction, the guide groove (263) is extended along the first direction, and the slider (250) and the end of the guide groove (263) close to the other sub-shell (220) are engaged in the first direction limit position.

8. A wetting assembly for wetting an insertion tube according to claim 3, characterized in that: In the axial direction of the housing (200), the adsorption layer (100) and the housing (200) are positionally matched.

9. A medical device, characterized in that: The invention comprises an insertion tube (20) and a wetting component (10) according to any one of claims 1 to 8, wherein the wetting component (10) is used for being sleeved on the outside of the insertion tube (20).

10. A medical device according to claim 9, characterized in that: The wetting component (10) is sleeved outside the insertion tube (20) and is located in the proximal region of the insertion tube (20).

Images