Colorectal tumor extraction device for natural orifice

Abstract

The utility model provides a colorectal tumor extraction device for a natural orifice. The colorectal tumor extraction device comprises a guide piece, a guide sleeve rod and a guide push rod, wherein the guide piece comprises a supporting sleeve and a limiting piece; two ends of the guide sleeve rod are opened; and a fetching bag is arranged at one end of the guide push rod and is movably mounted in the guide sleeve rod. During use, the supporting sleeve extends into the body through a natural orifice (anus) of a patient, and then the guide sleeve rod extends into the body of the patient from the check valve; when the guide sleeve rod is in place, the guide push rod is pushed forwards until the fetching bag is pushed out of an inner cavity of the guide sleeve rod and is unfolded; then, the large tumor is placed into the object taking bag through a medical instrument and a guide push rod; and after collection is completed, the guide push rod and the guide sleeve rod are pulled out, then the limiting piece is detached, and the fetching bag is pulled out. The large tumor is taken out through the natural orifice of the patient, a large incision is prevented from being cut in the abdomen of the patient, trauma of an operation to the patient is effectively relieved, and the postoperative recovery time can be shortened.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field, concretely relates to a kind of for natural cavity's colorectal neoplasm extraction device. BACKGROUND

[0002] Colorectal neoplasm refers to the tumor occurring in colon or rectum site. Colorectal neoplasm includes benign tumor and malignant tumor, wherein malignant tumor, i.e. colorectal cancer, is one of important diseases threatening human life and health. The treatment mode of colorectal neoplasm mainly includes surgical treatment, radiotherapy, chemotherapy and immunotherapy, etc. For early-stage patients, surgical resection is the preferred treatment mode, which achieves the purpose of radical cure by completely resecting tumor and its surrounding tissue. For middle-late stage patients, in addition to surgical treatment, it also needs to combine radiotherapy, chemotherapy and immunotherapy, etc. comprehensive treatment means to improve treatment effect and patient survival rate.

[0003] Colorectal neoplasm surgery is an important means for treating colorectal neoplasm, and its main mode includes open surgery and laparoscopic minimally invasive surgery. However, open surgery needs to cut a large incision on the abdomen of patient to expose the surgical area, which will cause great trauma to patient and the postoperative recovery time is longer. Therefore, laparoscopic minimally invasive surgery gradually becomes the mainstream choice for colorectal neoplasm treatment due to its advantages of small trauma and fast postoperative recovery. Laparoscopic minimally invasive surgery is to place laparoscope and its related instruments into abdominal cavity through multiple small incisions (usually 5-10 mm in diameter) on the abdomen of patient, and the surgeon completes surgical operation under the direct vision of laparoscope. In the process of surgery, the surgeon can clearly observe the structure in abdominal cavity through laparoscope, so as to accurately resect tumor tissue. However, the problem now is that the incision of laparoscopic minimally invasive surgery is small, and it is difficult to smoothly take out large tumor when facing large tumor due to small incision.

[0004] Therefore, how to design a colorectal neoplasm extraction device for natural cavity, which can smoothly take out large tumor in laparoscopic minimally invasive surgery, is a technical problem that has not been solved in the prior art. UTILITY MODEL CONTENT

[0005] Therefore, the technical problem to be solved by the utility model is to overcome the technical defect that the incision of laparoscopic minimally invasive surgery in the prior art is small, and it is difficult to smoothly take out large tumor when facing large tumor due to small incision, so as to provide a colorectal neoplasm extraction device for natural cavity, which can smoothly take out large tumor in laparoscopic minimally invasive surgery.

[0006] To this end, the utility model provides a kind of for natural cavity's colorectal tumor extraction device, comprising: guide, with internal accommodating space, and with the top opening and bottom opening of internal accommodating space communication, including support cover and with the limiting piece detachable connection of support cover;

[0007] The insertion end of the support cover is adapted to be inserted into the human body, and the free end of the limiting piece is communicated with a check valve;The check valve is used to seal the guide;

[0008] Guide sleeve rod, hollow and both ends open, one end can pass through the check valve and extend from the insertion end of the support cover;

[0009] Guide push rod, one end is provided with a bag, and is movably mounted in the inner cavity of the guide sleeve rod;

[0010] The bag has a retracted state inside the inner cavity of the guide sleeve rod, and an expanded state pushed out of the inner cavity of the guide sleeve rod.

[0011] As a preferred scheme, the support cover is of elastic material, and the insertion end is fixedly provided with an elastic support ring.

[0012] As a preferred scheme, the support cover and the limiting piece are detachably connected by a connecting structure;

[0013] The connecting structure comprises:

[0014] The first connecting member is fixedly connected to the other end of the support cover, has a first through hole through the middle part, and the first through hole is communicated with the internal accommodating space of the support cover;

[0015] The second connecting member is fixedly connected to the other end of the limiting piece, has a second through hole communicated with the first through hole, and the second through hole is communicated with the internal accommodating space of the limiting piece;

[0016] At least two clamps are movably mounted on the second connecting member, and the clamps can clamp and fixedly connect the first connecting member and the second connecting member.

[0017] As a preferred scheme, the first connecting member comprises a first connecting portion and a first fixing portion integrally formed on the top surface of the first connecting portion;

[0018] The second connecting member comprises a second connecting portion, a second fixing portion integrally formed on the bottom surface of the second connecting portion, and a plug-in portion integrally formed on the top surface of the second connecting portion;The bottom of the second fixing portion is fixedly provided with a clamping portion.

[0019] As a preferred scheme, further comprising:

[0020] A first elastic fixing ring is capable of being sleeved on the first fixing part;

[0021] The other end of the supporting sleeve is sleeved on the first fixing part, the first elastic fixing ring is sleeved on the outer wall of the other end of the supporting sleeve, the other end of the supporting sleeve is pressed and fixed on the first fixing part, and the supporting sleeve is fixedly connected with the first connecting piece.

[0022] As a preferred solution, further comprising:

[0023] A second elastic fixing ring is capable of being sleeved on the second fixing part;

[0024] The limiting piece is made of elastic material, the other end of the limiting piece is sleeved on the second fixing part, the second elastic fixing ring is sleeved on the outer wall of the other end of the limiting piece, the other end of the limiting piece is pressed and fixed on the second fixing part, the clamping part is clamped on the inner wall of the limiting piece, and the limiting piece is fixedly connected with the second connecting piece;

[0025] The inserting part is inserted into the first through hole, and the first connecting piece and the second connecting piece are clamped and fixed, so that the supporting sleeve is fixedly connected with the limiting piece.

[0026] As a preferred solution, the check valve comprises:

[0027] The main body is provided with an inner cavity with two open ends, a plurality of fixing slots are formed in the circumferential outer wall of one end, and a plurality of long slot grooves are formed in a section of the inner wall;

[0028] The first valve body is made of elastic material, and an inner concave first valve flap is integrally formed on the inner wall, and a long slot opening is formed in the middle of the first valve flap; a plurality of clamping blocks are fixedly arranged on the circumferential outer wall of the first valve body, and the clamping blocks are matched and clamped with the long slot grooves, so that the first valve body is clamped and fixed in the inner cavity of the main body;

[0029] The fixing piece is made of elastic material, and is provided with an inner cavity with an end opening, a first middle through hole penetrating the inner bottom wall is formed, and an annular connecting piece is fixedly arranged on the circumferential outer wall of the end opening, and a plurality of insertion holes are formed in the annular connecting piece;

[0030] The second valve body is made of elastic material, and an inner concave second valve flap is integrally formed on the inner wall, the second valve flap is evenly divided into at least six fan-shaped blocks by a plurality of vertical lines, and a second middle through hole penetrating the middle is formed; the second valve body is installed in the inner cavity of the fixing piece, and the outer wall abuts against the inner wall of the fixing piece;

[0031] The fixed cap is hollow and open at both ends, a plurality of connecting columns are fixedly arranged on the inner side wall, the connecting columns are inserted and fixed with the fixed slots through the insertion holes, and the fixed part is fixedly connected inside the inner cavity of the main part.

[0032] As a preferred solution, the bag opening of the taking bag is provided with an annular connecting sleeve;

[0033] The elastic steel ring is movably mounted in the annular connecting sleeve.

[0034] As a preferred solution, a pulling rope is further included, one end of the pulling rope is connected in series in the annular connecting sleeve, and the other end of the pulling rope extends to the outside of the inner cavity of the guide sleeve rod.

[0035] As a preferred solution, a first limiting handle is fixedly arranged on the other end of the guide sleeve rod.

[0036] A second limiting handle is fixedly arranged on the other end of the guide push rod.

[0037] The technical solution provided by the utility model has the following advantages:

[0038] The utility model discloses a natural cavity's colorectal tumor taking device, including guide, guide sleeve rod and guide push rod, wherein the guide has the inside containing space, and with the inside containing space intercommunication's top opening and bottom opening, including support sleeve and with support sleeve detachable connection's limiting piece, the insertion end of support sleeve is suitable for inserting into human body, and the free end of limiting piece is communicated with check valve, and check valve is used for sealing guide, guide sleeve rod is hollow and open at both ends, and one end can pass through check valve and extend from the insertion end of support sleeve, one end of guide push rod is provided with taking bag, and the movable installation is in the inner cavity inside guide sleeve rod, and taking bag has the inside contraction state of guide sleeve rod inner cavity and the unfolded state of being pushed out the inner cavity of guide sleeve rod.

[0039] When taking out the large tumor in the patient's body, first, the support sleeve is inserted into the body through the natural cavity (anus) of the patient, then the guide sleeve rod is inserted from the check valve, and the correct position of the guide sleeve rod inserted into the patient's body is ensured by observing the laparoscope, when the guide sleeve rod reaches the predetermined position, the guide push rod is pushed forward until the taking bag is pushed out of the inner cavity of the guide sleeve rod and unfolded, then, the field of view of the laparoscope is used to cooperate with the medical instrument and the guide push rod to put the large tumor into the taking bag, after the collection of the large tumor is completed, the guide push rod and the guide sleeve rod are pulled out, the limiting piece is detached, and the taking bag is pulled out from the inner cavity of the support sleeve. BRIEF DESCRIPTION OF DRAWINGS

[0040] In order to more clearly illustrate the technical scheme in the prior art or the specific embodiment of the present application, the drawings used in the description of the prior art or the specific embodiment will be briefly introduced as follows.

[0041] Figure 1 is the overall structure schematic diagram of the natural cavity colorectal tumor removal device.

[0042] Figure 2 is Figure 1 the sectional view.

[0043] Figure 3 is Figure 2 the structure enlarged schematic diagram of the A part in

[0044] Figure 4 is Figure 1 the explosion structure schematic diagram of the guide and the connecting structure in

[0045] Figure 5 is Figure 1 the explosion structure schematic diagram of the check valve in

[0046] Figure 6 is Figure 5 the other perspective view of

[0047] Reference signs: 1, guide; 2, support sleeve; 21, elastic support ring; 3, limiting piece; 4, check valve; 41, main body; 42, fixed slot; 43, first valve body; 44, first valve flap; 45, long strip opening; 46, clamping block; 47, fixing piece; 48, annular connecting piece; 49, insertion hole; 5, guide sleeve rod; 51, first limiting handle; 6, guide push rod; 61, taking bag; 62, annular connecting sleeve; 63, elastic steel ring; 64, pull rope; 65, second limiting handle; 7, first connecting piece; 71, first connecting part; 72, first fixed part; 73, first elastic fixed ring; 8, second connecting piece; 81, clamping; 82, second connecting part; 83, second fixed part; 84, insertion part; 85, clamping part; 86, second elastic fixed ring; 9, second valve body; 91, second valve flap; 92, fixed cap; 93, connecting column. DETAILED DESCRIPTION

[0048] In order for those skilled in the art to better understand the present scheme, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0049] It should be noted that the terms "first," "second," and the like in the claims and description of this application are used to distinguish similar objects, and are not used to describe a particular order or precedence. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to those steps or units explicitly listed, but may also include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.

[0050] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to having a specific orientation, or to be constructed and operated in a specific orientation. Moreover, in addition to being used to indicate orientations or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain cases. For those skilled in the art, the specific meanings of these terms in the present application can be understood according to the specific circumstances. In addition, the term "multiple" should mean two or more. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other unless there is a conflict.

[0051] The present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments. Example

[0052] This embodiment provides a colorectal tumor removal device for natural cavity, such as Figures 1-6 As shown, it includes: a guide member 1, a guide sleeve rod 5 and a guide push rod 6; wherein the guide member 1 has an internal accommodating space, and a top opening and a bottom opening connected to the internal accommodating space, including a support sleeve 2 and a limit member 3 detachably connected to the support sleeve 2; the insertion end of the support sleeve 2 is suitable for insertion into the human body, and the free end of the limit member 3 is connected to a check valve 4; the check valve 4 is used to seal the guide member 1; the guide sleeve rod 5 is hollow and open at both ends, and one end can pass through the check valve 4 and extend from the insertion end of the support sleeve 2; a retrieval bag 61 is provided at one end of the guide push rod 6, which is movably mounted inside the inner cavity of the guide sleeve rod 5; the retrieval bag 61 has a contracted state located inside the inner cavity of the guide sleeve rod 5, and an expanded state pushed out of the inner cavity of the guide sleeve rod 5.

[0053] When a large tumor in a patient's body is removed, the support sleeve 2 is first inserted into the body through the patient's natural cavity (anus), then the guide sleeve rod 5 is extended from the check valve 4, and the correct position of the guide sleeve rod 5 extending into the patient's body is ensured by observing the laparoscope; when the guide sleeve rod 5 reaches the predetermined position, the guide push rod 6 is pushed forward until the retrieval bag 61 is pushed out of the inner cavity of the guide sleeve rod 5 and unfolded; then, using the field of view of the laparoscope, the medical device and the guide push rod 6 are used to put the large tumor into the retrieval bag 61; after the collection of the large tumor is completed, the guide push rod 6 and the guide sleeve rod 5 are pulled out, and the limiting piece 3 is removed, and the retrieval bag 61 is pulled out from the inner cavity of the support sleeve 2. The present embodiment is a natural cavity colorectal tumor removal device, which removes the large tumor through the patient's natural cavity, avoids making a large incision on the patient's abdomen, effectively reduces the trauma of the operation on the patient, and can shorten the recovery time after the operation.

[0054] The support sleeve 2 is made of elastic material, and the insertion end is fixedly provided with an elastic support ring 21. The support sleeve 2 has the characteristic of not being extruded to close the internal space, and the elastic support ring 21 supports the insertion end of the support sleeve 2, which can facilitate the pushing or pulling of the retrieval bag 61.

[0055] As shown in Figure 4 , the support sleeve 2 and the limiting piece 3 are detachably connected through a connecting structure; the connecting structure includes a first connecting piece 7 and a second connecting piece 8; wherein the first connecting piece 7 is fixedly connected with the other end of the support sleeve 2, has a first through hole penetrating the middle part, and the first through hole is in communication with the internal space of the support sleeve 2; the second connecting piece 8 is fixedly connected with the other end of the limiting piece 3, has a second through hole in communication with the first through hole, and the second through hole is in communication with the internal space of the limiting piece 3; at least two clamps 81 are movably mounted on the second connecting piece 8 in opposite directions, and the clamps 81 can clamp and fixedly connect the first connecting piece 7 and the second connecting piece 8. When the collection of the large tumor is completed, the clamps 81 are opened, the limiting piece 3 and the second connecting piece 8 are removed, and the retrieval bag 61 is pulled out from the inside of the support sleeve 2 and the first connecting piece 7.

[0056] As shown in Figure 3 and 4 , the first connecting piece 7 includes a first connecting part 71 and a first fixing part 72 integrally formed on the top surface of the first connecting part 71; the second connecting piece 8 includes a second connecting part 82, a second fixing part 83 integrally formed on the bottom surface of the second connecting part 82, and a plug-in part 84 integrally formed on the top surface of the second connecting part 82; the bottom of the second fixing part 83 is fixedly provided with a clamping part 85.

[0057] Further comprising a first elastic fixing ring 73 capable of sleeving on the first fixing part 72; the other end of the supporting sleeve 2 is sleeved on the first fixing part 72, the first elastic fixing ring 73 is sleeved on the outer wall of the other end of the supporting sleeve 2, the other end of the supporting sleeve 2 is extruded and fixed on the first fixing part 72, so that the supporting sleeve 2 is fixedly connected with the first connecting piece 7.

[0058] Further comprising a second elastic fixing ring 86 capable of sleeving on the second fixing part 83; the limiting piece 3 is of elastic material, the other end is sleeved on the second fixing part 83, the second elastic fixing ring 86 is sleeved on the outer wall of the other end of the limiting piece 3, the other end of the limiting piece 3 is extruded and fixed on the second fixing part 83, the clamping part 85 is clamped on the inner wall of the limiting piece 3, so that the limiting piece 3 is fixedly connected with the second connecting piece 8; the inserting part 84 is inserted into the first through hole, the first connecting piece 7 and the second connecting piece 8 are clamped and fixed by the clamp 81, so that the supporting sleeve 2 is fixedly connected with the limiting piece 3.

[0059] As Figure 5 and 6As shown, the check valve 4 comprises a main body 41, a first valve body 43, a fixing member 47, a second valve body 9 and a fixing cap 92; wherein the main body 41 is provided with an inner cavity with two open ends, a plurality of fixing slots 42 are formed on the circumferential outer wall of one end, and a plurality of long slot grooves are formed on a section of the inner wall; the first valve body 43 is made of elastic material, and an inner concave first valve flap 44 is integrally formed on the inner wall, and a long slot opening 45 is formed in the middle of the first valve flap 44; a plurality of clamping blocks 46 are fixedly arranged on the circumferential outer wall of the first valve body 43, and the clamping blocks 46 are matched and clamped with the long slot grooves, so that the first valve body 43 is clamped and fixed inside the inner cavity of the main body 41; the fixing member 47 is made of elastic material, and is provided with an inner cavity with an open end, a first middle through hole is formed on the inner bottom wall, and an annular connecting member 48 is fixedly arranged on the circumferential outer wall of the open end, and a plurality of insertion holes 49 are formed on the annular connecting member 48; the second valve body 9 is made of elastic material, and an inner concave second valve flap 91 is integrally formed on the inner wall, and the second valve flap 91 is evenly divided into at least six fan-shaped blocks by a plurality of vertical lines, and a second middle through hole is formed in the middle; the second valve body 9 is installed inside the inner cavity of the fixing member 47, and the outer wall abuts against the inner wall of the fixing member 47; the fixing cap 92 is hollow and has two open ends, a plurality of connecting columns 93 are fixedly arranged on the inner side wall, the connecting columns 93 pass through the insertion holes 49 and the fixing slots 42 to be inserted and fixed, and the fixing member 47 is fixedly connected inside the inner cavity of the main body 41. The check valve 4 is used to seal the guide member 1 to prevent abdominal gas leakage; when collecting large tumors, after placing the guide member 1 in place, the guide sleeve rod 5 is inserted inward from the fixing cap 92 of the check valve 4, and then inserted inward after passing through the second valve flap 91, the fixing member 47 and the first valve flap 44.

[0060] As shown in Figure 1 and 2 As shown, the bag opening of the taking bag 61 is provided with an annular connecting sleeve 62; one end of the guide push rod 6 is fixedly provided with an elastic steel ring 63, the elastic steel ring 63 has a broken part and is movably installed in the annular connecting sleeve 62. When the guide push rod 6 pushes the taking bag 61 out of the inner cavity of the guide sleeve rod 5, the elastic steel ring 63 expands and drives the taking bag 61 to expand; when the collection of large tumors is completed, the guide push rod 6 is pulled out, the elastic steel ring 63 is separated from the taking bag 61, and the guide push rod 6 is pulled out together with the elastic steel ring 63.

[0061] A pull rope 64 is further included, one end of the pull rope 64 is connected in series in the annular connecting sleeve 62, and the other end extends to the outside of the inner cavity of the guide sleeve rod 5. When the taking bag 61 is taken out, the taking bag 61 is pulled out through the pull rope 64.

[0062] The other end of the guide sleeve rod 5 is fixedly provided with a first limiting handle 51; the other end of the guide push rod 6 is fixedly provided with a second limiting handle 65. The first limiting handle 51 and the second limiting handle 65 are used for limiting the guide sleeve rod 5 and the guide push rod 6.

[0063] The device for taking out colorectal tumors in natural cavities in the embodiment is used as follows: when taking out a large tumor in a patient's body, the support sleeve 2 is first inserted into the body through the patient's natural cavity (anus), then the guide sleeve rod 5 is inserted from the check valve 4, and the correct position of the guide sleeve rod 5 inserted into the patient's body is ensured by observing the laparoscope; when the guide sleeve rod 5 reaches the predetermined position, the guide push rod 6 is pushed forward until the taking-out bag 61 is pushed out of the inner cavity of the guide sleeve rod 5 and unfolded; then, the field of view of the laparoscope is used to put the large tumor into the taking-out bag 61 in cooperation with medical instruments and the guide push rod 6; after the collection of the large tumor is completed, the guide push rod 6 and the guide sleeve rod 5 are pulled out first, then the clamping clip 81 is opened, the limiting piece 3 and the second connecting piece 8 are removed, and then the taking-out bag 61 is pulled out from the inside of the support sleeve 2 and the first connecting piece 7 through the pull rope 64; when the taking-out bag 61 is pulled out, the support sleeve 2 is taken out.

[0064] Obviously, the above embodiment is only an example for clearly illustrating, but not a limitation of the embodiments. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments need not and cannot be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the technical solutions.

Claims

1. A colorectal tumor removal device for natural cavity, characterized in that: The utility model relates to a guide device for the human body, comprising: a guide (1) having an internal accommodation space, and a top opening and a bottom opening in communication with the internal accommodation space, comprising a support sleeve (2) and a limiting piece (3) detachably connected with the support sleeve (2); the insertion end of the support sleeve (2) is adapted to be inserted into the human body, and the free end of the limiting piece (3) is in communication with a check valve (4); the check valve (4) is used for sealing the guide (1); a guide sleeve rod (5) is hollow and open at both ends, and one end can pass through the check valve (4) and extend out of the insertion end of the support sleeve (2); a guide push rod (6) is movably installed inside the inner cavity of the guide sleeve rod (5), and one end of the guide push rod (6) is provided with a taking bag (61); the taking bag (61) has a retracted state inside the inner cavity of the guide sleeve rod (5), and an unfolded state pushed out of the inner cavity of the guide sleeve rod (5).

2. The device for natural orifice colorectal tumor extraction according to claim 1, wherein: The support sleeve (2) is made of elastic material, and the insertion end is fixedly provided with an elastic support ring (21).

3. The device for natural orifice colorectal tumor extraction according to claim 1, wherein: The support sleeve (2) and the limiting piece (3) are detachably connected through a connecting structure; the connecting structure comprises: a first connecting piece (7) fixedly connected with the other end of the support sleeve (2) and having a first through hole penetrating the middle part, the first through hole being in communication with the internal accommodation space of the support sleeve (2); a second connecting piece (8) fixedly connected with the other end of the limiting piece (3) and having a second through hole in communication with the first through hole, the second through hole being in communication with the internal accommodation space of the limiting piece (3); at least two clamps (81) are oppositely movably installed on the second connecting piece (8), and the clamps (81) can clampingly fixedly connect the first connecting piece (7) and the second connecting piece (8).

4. The device for natural orifice colorectal tumor extraction according to claim 3, wherein: The first connecting piece (7) comprises a first connecting part (71) and a first fixed part (72) integrally formed on the top surface of the first connecting part (71); the second connecting piece (8) comprises a second connecting part (82), a second fixed part (83) integrally formed on the bottom surface of the second connecting part (82), and a plug-in part (84) integrally formed on the top surface of the second connecting part (82); the bottom of the second fixed part (83) is fixedly provided with a clamping part (85).

5. The device for natural orifice colorectal tumor extraction according to claim 4, wherein, Further comprising: a first elastic fixing ring (73) capable of being sleeved on the first fixed part (72); the other end of the support sleeve (2) is sleeved on the first fixed part (72), the first elastic fixing ring (73) is sleeved on the outer wall of the other end of the support sleeve (2), the other end of the support sleeve (2) is pressed and fixed on the first fixed part (72), so that the support sleeve (2) is fixedly connected with the first connecting piece (7).

6. The device for natural orifice colorectal tumor extraction according to claim 4, wherein, Further comprising: a second elastic fixing ring (86) capable of being sleeved on the second fixed part (83); The limiting piece (3) is of elastic material, and the other end is sleeved on the second fixed part (83). The second elastic fixed ring (86) is sleeved on the outer wall of the other end of the limiting piece (3), and the other end of the limiting piece (3) is pressed and fixed on the second fixed part (83). The clamping part (85) is clamped on the inner wall of the limiting piece (3), so that the limiting piece (3) is fixedly connected with the second connecting piece (8). The inserting part (84) is inserted into the first through hole, and the first connecting piece (7) and the second connecting piece (8) are clamped and fixed by the clamp (81), so that the supporting sleeve (2) is fixedly connected with the limiting piece (3).

7. The device for natural orifice colorectal tumor extraction according to claim 1, wherein, The check valve (4) comprises: The main body piece (41) is provided with an inner cavity with two open ends. A plurality of fixed insertion grooves (42) are formed on the circumferential outer wall of one end. A section of the inner wall is provided with a plurality of long strip clamping grooves. The first valve body (43) is of elastic material, and the inner wall is integrally formed with a concave first valve clack (44). A long strip opening (45) is formed in the middle of the first valve clack (44). A plurality of clamping blocks (46) are fixedly arranged on the circumferential outer wall of the first valve body (43). The clamping blocks (46) are matched and clamped with the long strip clamping grooves, so that the first valve body (43) is clamped and fixed inside the inner cavity of the main body piece (41). The fixed piece (47) is of elastic material, and is provided with an inner cavity with an open end. A first middle through hole is formed in the inner bottom wall. An annular connecting piece (48) is fixedly arranged on the circumferential outer wall of the open end. A plurality of insertion holes (49) are formed in the annular connecting piece (48). The second valve body (9) is of elastic material, and the inner wall is integrally formed with a concave second valve clack (91). The second valve clack (91) is evenly divided into at least six fan-shaped blocks by a plurality of vertical lines. A second middle through hole is formed in the middle. The second valve body (9) is installed inside the inner cavity of the fixed piece (47), and the outer wall abuts against the inner wall of the fixed piece (47). The fixed cap (92) is hollow and has two open ends. A plurality of connecting columns (93) are fixedly arranged on the inner side wall. The connecting columns (93) are inserted and fixed with the fixed insertion grooves (42) through the insertion holes (49), so that the fixed piece (47) is fixedly connected inside the inner cavity of the main body piece (41).

8. The device according to claim 1, wherein: The bag opening of the taking bag (61) is provided with an annular connecting sleeve (62). An elastic steel ring (63) is fixedly arranged on one end of the guide push rod (6). The elastic steel ring (63) has a fracture and is movably installed in the annular connecting sleeve (62).

9. The device according to claim 8, wherein: A pull rope (64) is further included. One end of the pull rope (64) is connected in series in the annular connecting sleeve (62), and the other end extends to the outside of the inner cavity of the guide sleeve rod (5).

10. The device according to claim 1, wherein: A first limiting handle (51) is fixedly arranged on the other end of the guide sleeve rod (5). A second limiting handle (65) is fixedly arranged on the other end of the guide push rod (6).

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