Multilane Polyp Trap

Abstract

A multi-lane polyp trap includes a collecting unit (200) including a cup body (100), a fixed base (210), and a trapping chamber (220), the fixed base being mounted within the cup body (100), the trapping chambers being detachably attached to the fixed base and evenly spaced along the circumferential direction, the collecting unit (200) having a first engaging portion (211) on the fixed base, and a cover body (300) rotatably mounted on the cup body and detachably connected to the cup body, having first and second catheters (310, 320) mounted thereon, the first catheter being provided with the second engaging portion (311). The trap allows the second catheter to accurately correspond to the position limiting groove to ensure communication, and has a tactile indication for a medical professional, which notifies the medical professional that the second catheter has reached a predetermined position, thereby reducing the number of operating steps required by the medical professional, improving surgical efficiency, and enhancing the quality of tissue samples.

Description

[Technical Field]

[0001] TECHNICAL FIELD This application relates to the technical field of polyp collectors, and in particular to multi-lane polyp traps. [Background technology]

[0002] A polyp refers to a neoplasm that grows on the surface of human tissue. In modern medicine, neoplasms that grow on the surface of human mucosa are generally referred to as polyps, including hyperplasia, inflammation, hamartoma, adenoma, and other tumors. For many polyps, endoscopic resection is the treatment of choice, which mainly involves inserting an endoscope into the body and using tools such as cutters, electric scalpels, and biopsy forceps to completely remove the polyp from the mucosal surface.

[0003] Conventional multi-lane polyp traps require physicians to perform additional steps or operations to determine whether polyps can enter the collector. If an error or oversight occurs during surgery, the collection of polyps may be insufficient, requiring additional surgery or specimen collection to correct the error. This reduces the efficiency of surgery and makes it difficult for physicians to obtain accurate pathological evaluation results, which may have a detrimental effect on patient safety. Summary of the Invention [Problem to be solved by the invention]

[0004] The present application aims to solve at least one of the problems in the prior art, and to this end, the present application provides a multi-lane polyp trap that can simplify the operation process, improve surgical efficiency, enable doctors to accurately obtain target tissue samples, and improve the quality of the tissue samples.

[0005] The multi-lane polyp trap of the present application is a collection unit including a cup body, a fixed base, and several trapping chambers, the fixed base being provided within the cup body, the several trapping chambers being detachably provided on the upper side of the fixed base, the several trapping chambers being evenly arranged along the circumferential direction of the fixed base, a cavity being formed between the lower side of the fixed base and the cup body, a through hole being opened in the center of the fixed base, and several first engagement portions being provided on the inner wall of the through hole; and a lid body rotatably provided on the cup body, the lid body being detachably attached to the cup body. The end of the first catheter away from the cover is connectable to the endoscope, the other end of the first catheter extends through the through-hole into the cavity, and several second engaging portions engageable with the first engaging portion are provided on the outer wall of the first catheter. The end of the second catheter away from the cover is connected to the cover, and when the cover is rotated, several second engaging portions and several first engaging portions alternately engage, thereby sequentially connecting the second catheter to several trapping chambers.

[0006] The multi-lane polyp trap of the present embodiment has at least the following beneficial effects: during a resection operation, an endoscope connected to a first catheter enters the human body, and after a medical professional uses a tool to remove a polyp, the polyp is forced along the pipe into a second catheter by the action of an air pump, and finally falls into the position-limiting groove corresponding to the second catheter. After the previous collection of polyps is completed, the medical professional rotates the cover to separate the four second engaging parts from the four first engaging parts, and then re-engages them, thereby quickly fixing the second catheter and the position-limiting groove, thereby ensuring that the second catheter and the unused position-limiting grooves are accurately connected to each other. The engagement of the second engaging parts with the first engaging parts provides a tactile indication to the medical professional, informing the medical professional that the second catheter has reached the predetermined position. This reduces the number of operating steps required by the medical professional, improves surgical efficiency, enables doctors to accurately obtain target tissue samples, and further improves the quality of the tissue samples.

[0007] According to some embodiments of the present application, several elastic members are provided on the fixed base, several elastic members are located within the cavity, several elastic members are evenly arranged around the first catheter, several first engagement portions are provided in one-to-one correspondence with several elastic members, several first engagement portions are respectively located on the sides of several elastic members closer to the first catheter, several second engagement portions are provided at the ends located in the cavity of the first catheter, and several second engagement portions are located on the side of the first catheter closer to the elastic members.

[0008] According to some embodiments of the present application, the cover body is further provided with several third engagement portions, which are evenly arranged around the first catheter, a sleeve is provided on the fixed base, the first catheter extends through the sleeve into the cavity, and several fourth engagement portions corresponding to the several third engagement portions are provided on the side of the sleeve closer to the cover body, so that when the cover body is rotated, the second catheter and several trapping chambers are sequentially and alternately connected, and several third engagement portions and several fourth engagement portions are respectively engaged correspondingly and alternately.

[0009] According to some embodiments of the present application, several protrusions are provided on the side wall of the lid body near the cup wall of the cup body, an annular groove is provided on the cup wall of the cup body near the lid body, and several notches corresponding to the several protrusions are opened on the upper side of the annular groove, and the several protrusions enter the annular groove through the several notches, and when the lid body is rotated, the several protrusions are moved in a direction restricted by the annular groove, thereby rotatably connecting the lid body and the cup body.

[0010] According to some embodiments of the present application, the fixed base is provided with some limiting blocks, which are for limiting the position of the trapping chamber on the fixed base.

[0011] According to some embodiments of the present application, some first through-holes are drilled in the bottoms of some trapping chambers, some second through-holes are drilled in the fixed base, and there are gaps between some of the trapping chambers and the fixed base.

[0012] According to some embodiments of the present application, the lid is provided with markings for indicating the communication status of the second catheter with some of the trapping chambers.

[0013] According to some embodiments of the present application, the second engagement portion is a straight groove provided along the extension direction of the first catheter, and the first engagement portion is a protrusion corresponding to the straight groove.

[0014] According to some embodiments of the present application, the first catheter is provided at an end remote from the connection to the endoscope with a pilot portion for guiding the first catheter through the fixed base and into the cup body.

[0015] According to some embodiments of the present application, a first catheter is provided with a first transition section, the cross-sectional area of ​​which gradually decreases in a direction away from the cover body, and a second catheter is provided with a second transition section, the cross-sectional area of ​​which gradually decreases in a direction away from the cover body.

[0016] Additional aspects and advantages of the present application will be set forth in part in the description that follows, and in part will be obvious from the description, or may be learned by practice of the present application. The present invention will be described in more detail below in conjunction with the drawings and examples. [Brief explanation of the drawings]

[0017] [Figure 1] FIG. 1 is a schematic diagram illustrating the configuration of a multi-lane polyp trap according to an embodiment of the present application. [Figure 2] FIG. 2 is a schematic diagram illustrating the configuration of a collection unit in FIG. [Figure 3] FIG. 2 is a schematic diagram illustrating the configuration of the lid body and the collection unit in FIG. [Figure 4] FIG. 2 is a schematic diagram illustrating the configuration of the lid body in FIG. [Figure 5] FIG. 2 is a cross-sectional view of FIG. [Figure 6] FIG. 2 is a schematic diagram illustrating the configuration of a collection unit and a cup body in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0018] This section describes in detail specific embodiments of the present application, and preferred embodiments of the present application are illustrated in the drawings. However, the role of the drawings is to supplement the written explanation of the specification with figures so that each technical feature and overall technical solution of the present application can be intuitively and visually understood, and they should not be construed as limiting the protection scope of the present application.

[0019] In the description of this application, descriptions regarding orientation, such as "upper," "lower," "front," "rear," "left," and "right," indicate orientations or positional relationships based on the drawings, and are intended solely for the convenience and simplification of the description of this application. They do not indicate or imply that the indicated devices or elements necessarily have a specific orientation or must be configured or operated in a specific orientation, and therefore should not be understood as limitations on this application.

[0020] In the description of this application, "some" means one or more, "plurality" means two or more, "greater than", "less than", "more than", etc. should be understood to be exclusive of the numerical value, and "greater than", "less than", "within", etc. should be understood to be inclusive. References to "first", "second", etc. are intended only to distinguish technical features and should not be understood to indicate or imply relative importance, to imply the number of technical features shown, or to imply the context of technical features.

[0021] In the description of this application, unless otherwise specified, terms such as "provided," "attached," and "connected" should be interpreted broadly, and a person skilled in the art can reasonably determine the specific meaning of the above terms in this application in relation to the specific content of the technical solutions.

[0022] A multi-lane polyp trap according to an embodiment of the present invention will be described with reference to FIGS.

[0023] As shown in FIGS. 1 to 6, the multi-lane polyp trap of the embodiment of the present application comprises a collection unit 200 including a cup body 100, a fixed base 210, and several trapping chambers 220, the fixed base 210 being provided in the cup body 100, the several trapping chambers 220 being detachably provided on the upper side of the fixed base 210, the several trapping chambers 220 being evenly arranged along the circumferential direction of the fixed base 210, a cavity 230 being formed surrounded by the lower side of the fixed base 210 and the cup body 100, a through hole being opened in the center of the fixed base 210, and several first engagement portions 211 being provided on the inner wall of the through hole, and a lid body 300 being rotatably provided on the cup body 100, the lid body 300 being rotatably provided on the cup body 100. 100, and a first catheter 310 and a second catheter 320 are provided on the cover 300, the first catheter 310 and the cover 300 are arranged coaxially, the end of the first catheter 310 remote from the cover 300 is connectable to the endoscope, the other end of the first catheter 310 passes through the through hole and extends into the cavity 230, several second engagement portions 311 are provided on the outer wall of the first catheter 310 and are engageable with the first engagement portion 211, and the end of the second catheter 320 remote from the cover 300 is provided with the cover 300 to be connected to an air pump, and when the cover 300 is rotated, several second engagement portions 311 and several first engagement portions 211 alternately engage, thereby sequentially connecting the second catheter 320 to several trapping chambers 220.

[0024] As shown in Figures 1 and 2, any horizontal cross section of the cup body 100 is circular, and the cup body 100 is provided with a fixed base 210, which is a circular plate corresponding to the inner diameter of the cup body 100, and four trapping chambers 220 are detachably provided on the upper side of the fixed base 210, and the four trapping chambers 220 are uniformly distributed around the axis of the fixed base 210, forming a cavity 230 surrounded by the underside of the fixed base 210 and the cup body 100, and four first engagement portions 211 are provided on the fixed base 210. The lid body 300 is rotatably attached to the cup body 100, and is detachably connected to the cup body 100. A first catheter 310 and a second catheter 320 are provided on the lid body 300. The upper end of the first catheter 310 is connected to the endoscope, and the lower end extends through the fixed base 210 to the lower cavity 230. Four second engagement portions 311 are provided on the first catheter 310, and the four second engagement portions 311 can engage with the four first engagement portions 211 in a one-to-one correspondence. The second catheter 320 extends upward and has an air pump connected to its upper end, which is used to receive fallen polyps. During the resection operation, the endoscope connected to the first catheter 310 is inserted into the human body, and the medical staff uses a tool to remove a polyp. Then, the air pump pushes the polyp along the pipe into the second catheter 320, and finally, the polyp falls into the position-limiting groove corresponding to the second catheter 320. After the previous polyp collection is completed, the medical staff rotates the cover 300 to separate the four second engaging portions 311 from the four first engaging portions 211, and then re-engage them, thereby ensuring that the second catheter 320 accurately communicates with the unused position-limiting grooves. The engagement between the second engaging portions 311 and the first engaging portions 211 provides the medical staff with a tactile indication that the second catheter 320 has reached the desired position. This reduces the number of operating steps required by the medical staff, improves surgical efficiency, enables doctors to accurately obtain target tissue samples, and improves the quality of the tissue samples.

[0025] Specifically, the cup body 100, lid 300, first catheter 310, second catheter 320, and trapping chamber 220 are all made of transparent materials to allow medical personnel to directly observe the polyp tissue collection process. The trapping chambers 220 may be multiple, such as two, three, or five, and are evenly spaced around the fixed base 210. The first and second engagement portions 211 and / or the second engagement portion 311 must be configured in a number corresponding to the number of trapping chambers 220. This ensures that the second catheter 320 and the trapping chambers 220 communicate with each other sequentially, allowing medical personnel to receive tactile or auditory information that the trapping chambers have reached the desired location. The multiple trapping chambers 220 allow for the collection of multiple polyp tissues without the need to replace the multi-lane polyp trap, simplifying operation. Of course, the more trapping chambers 220 are installed, the less space the trapping chambers 220 have to accommodate polyps; however, since polyps are typically abnormal tissues whose shape and location can make effective sample collection difficult, appropriately sized trapping chambers 220 provide better control and precision, allowing physicians to accurately obtain targeted tissue samples and improving the quality and reliability of sample collection.

[0026] In some specific embodiments of the present application, several elastic members 212 are provided on the fixed base 210, several elastic members 212 are located within the cavity 230, several elastic members 212 are evenly arranged around the first catheter 310, several first engagement portions 211 are provided in one-to-one correspondence with several elastic members 212, several first engagement portions 211 are respectively located on the side of several elastic members 212 closer to the first catheter 310, several second engagement portions 311 are provided at the end located in the cavity of the first catheter 310, and several second engagement portions 311 are located on the side of the first catheter 310 closer to the elastic members 212.

[0027] As shown in Figure 3, four elastic members 212 are provided on the underside of the fixed base 210, and the four elastic members 212 are arranged in a ring shape around the first catheter 310. Each of the four elastic members 212 is provided with a first engagement portion 211, and the first engagement portion 211 is located on the side of the elastic member 212 closer to the first catheter 310. Correspondingly, four second engagement portions 311 are provided, and the four second engagement portions 311 are provided on the side closer to the elastic member 212 at one end that penetrates the fixed base 210 of the first catheter 310. When the cover body 300 is rotated, the four elastic members 212 deform along the axial direction away from the first catheter 310, allowing the first catheter 310 to rotate relative to the fixed base 210 as the cover body 300 rotates, and the four second engagement portions 311 are engaged alternately with the four first engagement portions 211.Therefore, when the second catheter 320 reaches a predetermined position and sequentially communicates with the trapping chamber 220, the four second engagement portions 311 are again engaged with the four first engagement portions 211 one by one, allowing medical personnel to obtain information in real time during use.

[0028] In some specific embodiments of the present application, the cover body 300 is further provided with several third engagement portions 340, which are evenly arranged around the first catheter 310, a sleeve 213 is provided on the fixed base 210, the first catheter 310 extends through the sleeve 213 into the cavity 230, and several fourth engagement portions 214 corresponding to the several third engagement portions 340 are provided on the side of the sleeve 213 closer to the cover body 300, and when the cover body 300 is rotated, the second catheter 320 and several trapping chambers 220 are sequentially and alternately connected, and several third engagement portions 340 and several fourth engagement portions 214 are respectively engaged correspondingly and alternately.

[0029] As shown in FIGS. 2, 4 and 5, four third engagement portions 340 are provided on the underside of the cover 300, and the four third engagement portions 340 are evenly arranged around the first catheter 310. A sleeve 213 is provided on the fixed base 210, and the first catheter 310 passes through the sleeve 213 and enters the cavity 230. Four fourth engagement portions 214 corresponding to the four third engagement portions 340 are provided on the upper side of the sleeve 213, and the four fourth engagement portions 214 can be alternately engaged with the four third engagement portions 340, thereby enabling the cover 300 to be inserted into the cavity 230. During the rotation process, the four third engagement portions 340 on the underside of the cover body 300 also rotate along with the rotation of the cover body 300, and each time the second catheter 320 reaches the appropriate position and communicates with one of the four trapping chambers 220, the four third engagement portions 340 re-engage with the four fourth engagement portions 214, thereby improving the reliability of the engagement and the consistency of the corresponding communications between the second catheter 320 and the trapping chambers 220, while further helping medical personnel understand the structural state and reducing the risk of accidents due to incorrect operation.

[0030] In this specific embodiment, the third engagement portion 340 is a groove, more specifically, the third engagement portion 340 is a groove whose vertical cross section is trapezoidal, and the fourth engagement portion 214 is a protrusion, which is a trapezoidal protrusion corresponding to the third engagement portion 340. The slope of the trapezoidal protrusion plays a transitional role in the engagement of the structures, ensuring the engagement between the protrusion and the groove, and allowing the protrusion and the groove to separate from each other by rotating the cover 300 to proceed to the next engagement. Of course, conversely, the third engagement portion 340 may be a protrusion, and the fourth engagement portion 214 may be a groove corresponding to the third engagement portion 340.

[0031] In some specific embodiments of the present application, several protrusions 330 are provided on the side wall of the lid body 300 closer to the cup wall of the cup body 100, and an annular groove 110 is provided on the cup wall of the cup body 100 closer to the lid body 300, and several notches 111 corresponding to the several protrusions 330 are opened on the upper side of the annular groove 110, and the several protrusions 330 enter the annular groove 110 through the several notches 111, and when the lid body 300 is rotated, the several protrusions 330 are moved in a direction restricted by the annular groove 110, thereby rotatably connecting the lid body 300 and the cup body 100.

[0032] 4 to 6 , two protrusions 330 are provided on the annular side wall of the lid 300 on the side closest to the cup wall of the cup body 100, an annular groove 110 is provided on the cup wall of the cup body 100 on the side closest to the side wall of the lid 300, and two notches 111 corresponding to the two protrusions 330 are provided on the upper side of the annular groove 110. In this specific embodiment, the two protrusions 330 are provided opposite each other, and the two notches 111 are provided opposite each other correspondingly. When the lid 300 caps the cup body 100 from top to bottom, the two protrusions 330 first pass through the corresponding two notches 111 and enter the annular groove 110, and then the lid 300 is rotated, allowing the two protrusions 330 to move along the restricted path in the annular groove 110, thereby realizing a detachable rotational connection between the lid 300 and the cup body 100. Of course, multiple protrusions 330 may be provided, such as one, three, or four, and multiple notches 111 must also be provided correspondingly, such as one, three, or four, so that several protrusions 330 pass through several notches 111 and enter the annular groove 110.

[0033] Conversely, several protrusions 330 may be provided on the cup wall of the cup body 100 on the side closer to the lid body 300, and an annular groove 110 may be provided on the side wall of the lid body 300 on the side closer to the cup wall of the cup body 100, with several notches 111 opened above the annular groove 110 corresponding to the several protrusions 330, and the several protrusions 330 enter the annular groove 110 through the several notches 111, and when the lid body 300 is rotated, the protrusions 330 can likewise be moved in a direction restricted by the annular groove 110, and the lid body 300 and the cup body 100 are rotatably connected.

[0034] In some specific embodiments of the present application, the fixed base 210 is provided with several limiting blocks 215 , which are for limiting the position of the trapping chamber 220 on the fixed base 210 .

[0035] In some specific embodiments of the present application, some first through holes 221 are drilled at the bottom of some trapping chambers 220, some second through holes 216 are drilled in the fixed base 210, and there are gaps between some trapping chambers 220 and the fixed base 210.

[0036] 2 and 3, several limiting blocks 215 are provided on the fixed base 210, and in this specific embodiment, each trapping chamber 220 corresponds to four limiting blocks 215, and each trapping chamber 220 is inserted into a position limited by the four limiting blocks 215. A number of first through holes 221 are drilled at the bottom of each trapping chamber 220, and a number of second through holes 216 are also drilled in the fixed base 210. Specifically, an annular rib is formed on the edge of the fixed base 210, the trapping chamber 220 is suspended on the annular rib, and the position of the trapping chamber 220 is restricted by several restricting blocks 215, forming a gap between the trapping chamber 220 and the fixed base 210. Thus, when a polyp falls into the trapping chamber 220, the double filtration by the first through-hole 221 and the second through-hole 216 filters out substances other than polyp tissue into the cavity 230, ensuring that medical personnel can effectively collect and store the polyp tissue and preventing it from being lost or contaminated during the collection process.

[0037] In some specific embodiments of the present application, the lid 300 is provided with markings 350 for indicating the communication status between the second catheter 320 and some of the trapping chambers 220 .

[0038] 3, a marking portion 350 is provided on the side wall of the cover 300, and when the cover 300 is rotated to align the second catheter 320 with the trapping chamber 220, the marking portion 350 points toward the trapping chamber 220. In this specific embodiment, the marking portion 350 is a frame-like structure, and triangular protrusions are provided on the top and left and right sides of the frame-like structure, and all of the triangular protrusions point toward the trapping chamber 220 exposed in the center of the frame-like structure, providing medical personnel with a visible confirmation structure to determine the alignment between the second catheter 320 and the trapping chamber 220, further enhancing the usability of the multi-lane polyp trap.

[0039] In some specific embodiments of the present application, the second engagement portion 311 is a straight groove provided along the extension direction of the first catheter 310.

[0040] As shown in FIG. 3 , the second engagement portion 311 is a straight groove extending in the direction of extension of the first catheter 310, and the corresponding first engagement portion 211 is a protrusion that can move along the straight groove. Because the cover 300 and the cup 100 move vertically relative to each other during relative rotation between them, the elongated groove increases the contact area with the protrusion, providing more contact points and enhancing the stability and tightness of the connection. Furthermore, during the insertion of the first catheter 310 through the sleeve 213, the straight groove guides the protrusion, allowing it to slide more easily into the straight groove, improving positioning accuracy, reducing deviations and errors during assembly, and simplifying the assembly installation and removal processes.

[0041] In some specific embodiments of the present application, the end of the first catheter 310 away from the connection to the endoscope is provided with a pilot portion 312 for guiding the first catheter 310 through the fixed base 210 and into the cup body 100.

[0042] As shown in Figures 3 and 4, a pilot section 312 is provided at the lower end of the first catheter 310, and the cross-sectional area of ​​the pilot section 312 gradually increases from bottom to top. The pilot section 312 can guide the direction of the first catheter 310 when the first catheter 310 is inserted into the sleeve 213 of the fixed base 210.

[0043] In some specific embodiments of the present application, the first catheter 310 is provided with a first transition portion 313, the cross-sectional area of ​​which gradually decreases along the direction away from the cover body 300, and the second catheter 320 is provided with a second transition portion 321, the cross-sectional area of ​​which gradually decreases along the direction away from the cover body 300.

[0044] As shown in Figures 1, 3 and 4, the first catheter 310 has a first transition section 313 at its upper end, and the cross-sectional area of ​​the first transition section 313 gradually decreases from bottom to top. The second catheter 320 has a second transition section 321 at its upper end, and the cross-sectional area of ​​the second transition section 321 gradually decreases from bottom to top. When the first catheter 310 and the second catheter 320 need to be connected to equipment via a tube, the installation of the first transition portion 313 and the second transition portion 321 ensures a secure connection between the connection ports, thereby reducing the risk of gas or liquid leakage. When the second catheter 320 is connected to an air pump, the second transition portion 321 provides a larger contact area to withstand pressure or tension, reducing the risk of the connection ports loosening or falling off. The installation of the first transition portion 313 and the second transition portion 321 also simplifies the installation process, allowing the two connection ports to be more easily aligned during installation, reducing difficulties and errors during installation, and contributing to improving work efficiency and reducing problems caused by installation errors.

[0045] Although the embodiments of the present application have been described in detail above with reference to the drawings, the present application is not limited to the above embodiments, and a person skilled in the art may make various modifications within the scope of his or her knowledge without departing from the spirit of the present application. [Explanation of symbols]

[0046] Cup body 100, annular groove 110, notch 111; collecting unit 200, fixed base 210, first engaging portion 211, elastic member 212, sleeve 213, fourth engaging portion 214, limiting block 215, second through-hole 216, trapping chamber 220, first through-hole 221, cavity 230; Cover body 300, first catheter 310, second engagement portion 311, pilot portion 312, first transition portion 313, second catheter 320, second transition portion 321, convex portion 330, third engagement portion 340, and marking portion 350.

Claims

1. 1. A multi-lane polyp trap, comprising: A cup body (100), a collecting unit (200) including a fixed base (210) and several trapping chambers (220), the fixed base (210) being provided in the cup body (100), the several trapping chambers (220) being detachably provided on the upper side of the fixed base (210), the several trapping chambers (220) being evenly arranged along the circumferential direction of the fixed base (210), a cavity (230) being surrounded by the underside of the fixed base (210) and the cup body (100), a through hole being opened in the center of the fixed base (210), and several first engagement portions (211) being provided on the inner wall of the through hole; a lid (300) rotatably attached to the cup body (100), the lid (300) being detachably connected to the cup body (100); a first catheter (310) and a second catheter (320) being attached to the lid (300); the first catheter (310) and the lid (300) being coaxially attached; an end of the first catheter (310) remote from the lid body (300) being connectable to an endoscope; the other end of the first catheter (310) extending through the through-hole into the cavity (230); several second engaging portions (311) engageable with the first engaging portions (211) being provided on the outer wall of the first catheter (310); and an end of the second catheter (320) remote from the lid body (300) being connected to an air pump; A multi-lane polyp trap characterized in that when the cover body (300) is rotated, some of the second engagement portions (311) and some of the first engagement portions (211) alternately engage with each other, thereby sequentially connecting the second catheter (320) to some of the trapping chambers (220).

2. 2. The multi-lane polyp trap according to claim 1, wherein the fixed base (210) is provided with several elastic members (212), some of the elastic members (212) are located within the cavity (230), some of the elastic members (212) are evenly arranged around the first catheter (310), some of the first engagement portions (211) are provided in one-to-one correspondence with some of the elastic members (212), some of the first engagement portions (211) are located on the sides of some of the elastic members (212) closer to the first catheter (310), some of the second engagement portions (311) are provided at ends of the first catheter (310) located in the empty chamber, and some of the second engagement portions (311) are located on the sides of the first catheter (310) closer to the elastic members (212).

3. 2. The multi-lane polyp trap of claim 1, further comprising: a plurality of third engagement portions (340) on the cover (300), the plurality of third engagement portions (340) being evenly arranged around the first catheter (310); a sleeve (213) on the fixed base (210); the first catheter (310) extending through the sleeve (213) into the cavity (230); and a plurality of fourth engagement portions (214) corresponding to the plurality of third engagement portions (340) being provided on a side of the sleeve (213) closer to the cover (300). When the cover (300) is rotated, the second catheter (320) and the plurality of trapping chambers (220) are sequentially and alternately connected, and the plurality of third engagement portions (340) and the plurality of fourth engagement portions (214) are engaged with each other in a corresponding manner.

4. 2. The multi-lane polyp trap of claim 1, wherein the lid body (300) has a side wall on a side closer to the cup wall of the cup body (100), an annular groove (110) on the cup wall of the cup body (100) on a side closer to the lid body (300), and a plurality of notches (111) corresponding to the plurality of protrusions (330) are opened above the annular groove (110), and some of the protrusions (330) enter the annular groove (110) through some of the notches (111). When the lid body (300) is rotated, some of the protrusions (330) are moved in a direction restricted by the annular groove (110), thereby rotatably connecting the lid body (300) and the cup body (100).

5. 2. The multi-lane polyp trap according to claim 1, characterized in that the fixed base (210) is provided with several limiting blocks (215), and the several limiting blocks (215) are for limiting the position of the trapping chamber (220) on the fixed base (210).

6. A multi-lane polyp trap as described in claim 1, characterized in that several first through holes (221) are opened at the bottom of several of the trapping chambers (220), several second through holes (216) are opened in the fixed base (210), and there are gaps between some of the trapping chambers (220) and the fixed base (210).

7. The multi-lane polyp trap of claim 1, characterized in that the lid body (300) is provided with a marking portion (350), which is intended to indicate the communication state between the second catheter (320) and several of the trapping chambers (220).

8. 2. The multi-lane polyp trap of claim 1, wherein the second engagement portion (311) is a straight groove provided along the extension direction of the first catheter (310), and the first engagement portion (211) is a protrusion corresponding to the straight groove.

9. 2. The multi-lane polyp trap of claim 1, wherein the first catheter (310) is provided at an end thereof away from the connection to the endoscope with a pilot portion (312) for guiding the first catheter (310) through the fixed base (210) and into the cup body (100).

10. The multi-lane polyp trap of claim 1, characterized in that the first catheter (310) is provided with a first transition section (313), the cross-sectional area of ​​which gradually decreases along the direction away from the cover body (300), and the second catheter (320) is provided with a second transition section (321), the cross-sectional area of ​​which gradually decreases along the direction away from the cover body (300).

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