A device for removing foreign bodies from the digestive tract

Abstract

The present application discloses a device for removing foreign bodies from the digestive tract, which includes an elastic membrane, a fixed tube, an adjusting member disposed in the fixed tube and slidably connected to the fixed tube, and a plurality of support rods. The elastic membrane includes a connecting area and a working area provided with a magnetic part. The connecting area is disposed around the working area and is connected to the fixed tube through a plurality of support rods. The adjusting member is connected to the adjusting part of the working area and can drive the bottom of the wrapping cavity to move; the adjusting member can move along the axial direction of the fixed tube. When the adjusting member drives the adjusting part to move away from the fixed tube, a working protrusion capable of adsorbing foreign bodies is formed in the working area; when the adjusting member drives the adjusting part to move towards the fixed tube, the working area changes from the working protrusion to a working cavity capable of wrapping the foreign body. The present application utilizes the working area that can switch between the working protrusion and the working cavity, uses magnetic adsorption to adsorb metal foreign bodies in the digestive tract, and wraps and removes the foreign bodies.

Description

Technical Field

[0001] This application belongs to the technical field of medical devices, and specifically relates to a device for removing foreign bodies from the digestive tract. Background Art

[0002] Swallowing foreign bodies means that a patient accidentally or deliberately swallows substances that cannot be digested. Some foreign bodies can be naturally excreted from the digestive tract, but for sharp foreign bodies or foreign bodies stuck in the digestive tract, they need to be removed from the digestive tract in a timely manner. Especially for some rusty iron nails, iron sheets and other foreign bodies, they are very likely to damage the inner wall of the esophagus or gastric mucosa, causing digestive tract ulcers, making the local mucosa erode, and even having the risk of massive bleeding in the digestive tract. Therefore, when removing foreign bodies from the digestive tract, sharp foreign bodies should be avoided from scratching the digestive tract.

[0003] In current clinical operations, an endoscope forceps is mostly used to clamp foreign bodies in the digestive tract, and then the foreign body is dragged out of the digestive tract through the endoscope forceps. However, during this process, doctors need to spend a lot of energy to find the foreign body in the digestive tract; when dragging the foreign body, it is also necessary to avoid the sharp part of the foreign body from scratching the digestive tract. Summary of the Invention

[0004] In order to be able to remove magnetic foreign bodies in the digestive tract and avoid damage to the digestive tract during the removal process, this application provides a device for removing foreign bodies from the digestive tract.

[0005] A device for removing foreign bodies from the digestive tract includes an elastic membrane, a fixed tube, an adjusting member disposed in the fixed tube and slidably connected to the fixed tube, and a plurality of support rods. The elastic membrane includes a connecting area and a working area provided with a magnetic part. The connecting area is disposed around the working area and is connected to the fixed tube through a plurality of support rods. The adjusting member is connected to an adjusting part of the working area and can drive the working area to move; the adjusting member can move along the axial direction of the fixed tube. When the adjusting member drives the adjusting part to move away from the fixed tube, the working area forms a working protrusion capable of adsorbing foreign bodies; when the adjusting member drives the adjusting part to move closer to the fixed tube, the working area changes from the working protrusion to a working cavity capable of wrapping the foreign body.

[0006] When the elastic membrane becomes a working protrusion under the action of the adjusting member, the magnetic part of the working area can have a magnetic attraction effect with foreign bodies such as iron sheets and iron nails in the digestive tract, and foreign bodies such as iron sheets are adsorbed on the working protrusion. When the working protrusion gradually changes into a working cavity, the iron sheet is brought into the working cavity by the magnetic attraction part, so that the elastic membrane can wrap the foreign body and avoid damage to the digestive tract during the removal of the foreign body.

[0007] In one embodiment of this application, when the elastic membrane does not undergo elastic deformation and is in a natural state, the working area encloses a working cavity.

[0008] When the elastic membrane does not undergo elastic deformation, under the action of its own shape and elasticity, it can naturally form a working cavity. Thus, when a foreign object enters the working cavity and the elastic membrane wraps the foreign object and takes the foreign object out of the body, the state of the working cavity can be maintained without the acting force of the adjusting member, avoiding the situation that the adjusting member gives the elastic membrane a wrong acting force and causing the foreign object to fall out of the working cavity.

[0009] In an embodiment of the present application, the projection of the elastic membrane on the cross-section of the fixing tube is circular, the projection of the working area on the cross-section of the fixing tube is circular, the projection of the adjusting part on the cross-section of the fixing tube is located at the central position of the projection of the working area on the cross-section of the fixing tube, and the projection of the connecting area on the cross-section of the fixing tube surrounds the working area.

[0010] By the way that the projection of the elastic membrane on the cross-section of the fixing tube is circular, the projection of the working area on the cross-section of the fixing tube is circular, the projection of the adjusting part on the cross-section of the fixing tube is located at the central position of the projection of the working area on the cross-section of the fixing tube, and the projection of the connecting area on the cross-section of the fixing tube surrounds the working area, the distance from the edge of the elastic membrane to the working area is equal, which is convenient for foreign objects in all directions to be adsorbed by the working protrusions.

[0011] In an embodiment of the present application, a plurality of support rods are arranged in an array around the axis of the fixing tube.

[0012] In an embodiment of the present application, the adjusting part is connected with a clamp assembly, and the operating wire capable of controlling the opening and closing of the clamp jaws in the clamp assembly passes through the adjusting part, the fixing tube and is connected with the operating handle.

[0013] When the working protrusions are formed in the working area, the clamp assembly can clamp foreign objects with a relatively large weight or foreign objects in some special positions, and carry the foreign objects to the working protrusions, and cooperate with the magnetic attraction of the magnetic part to firmly fix the foreign objects. When the working cavity is formed by the working protrusions, the elastic membrane wraps the clamp jaws of the clamp assembly and the foreign objects clamped by it, which is convenient for taking the foreign objects out of the body.

[0014] In an embodiment of the present application, the clamp assembly does not have a magnetic attraction effect with the magnetic part.

[0015] In an embodiment of the present application, the magnetic part and the adjusting part are oppositely arranged, and the magnetic part, the adjusting part and the adjusting member are coaxially arranged with respect to the axis of the fixing tube.

[0016] In an embodiment of the present application, the digestive tract foreign object removing device further includes an isolation membrane, the isolation membrane is connected with the connecting area and the fixing tube, the isolation membrane, the elastic membrane and the fixing tube enclose an isolation cavity, the support rods are arranged in the isolation cavity, and the adjusting member passes through the isolation cavity and is connected with the adjusting part; when the working cavity is formed in the working area, the working cavity is arranged in the isolation cavity.

[0017] On the one hand, the isolation membrane can prevent human tissue from entering between the support rods and prevent human tissue from being damaged by the support rods. On the other hand, the isolation membrane and the elastic membrane form two layers of barriers. When foreign matter is too sharp and pierces the elastic membrane, the isolation membrane can isolate the foreign matter from contact with the digestive tract tissue and prevent foreign matter from damaging the tissue.

[0018] In one embodiment of the present application, the support rod is elastic; the digestive tract foreign body removal device also includes a sheath, and the fixed tube is arranged in the sheath and can move along the sheath; when the fixed tube moves in the direction of entering the sheath, the adjusting part enters the sheath, and the support rod and the elastic membrane undergo elastic deformation and are retracted in the sheath; when the fixed tube moves away from the sheath, it drives the support rod and the elastic membrane to leave the sheath, and the support rod and the elastic membrane change from a retracted state to an expanded state under the action of their own elasticity.

[0019] In one embodiment of the present application, the digestive tract foreign body removal device also includes an operating handle, the operating handle includes an operating body and a first operating member slidably connected to the operating body and a second operating member slidably connected to the first operating member, the operating body is connected to the sheath tube through a spring tube; the first operating member is connected to the fixed tube through a first operating line to drive the fixed tube to move along the sheath tube; the second operating member is connected to the adjusting member through a second operating line to drive the adjusting member to move along the axis of the fixed tube.

[0020] This application has at least the following beneficial effects:

[0021] 1. When the elastic membrane becomes a working protrusion under the action of the adjusting part, the magnetic part of the working area can produce magnetic attraction with foreign objects such as iron sheets and nails in the digestive tract, and the iron sheets and other foreign objects are adsorbed on the working protrusion. When the working protrusion gradually turns into a working cavity, the iron sheet is brought into the working cavity by the magnetic attraction part, so that the elastic membrane can wrap the foreign object to avoid damage to the digestive tract during the removal of the foreign object.

[0022] 2. When the elastic membrane does not undergo elastic deformation, a working cavity can be naturally formed under the action of its own shape and elasticity. Therefore, after a foreign object enters the working cavity, the elastic membrane wraps the foreign object and takes the foreign object out of the body. In this process, the state of the working cavity can be maintained without the force of the adjusting part, thereby avoiding the situation where the adjusting part applies the wrong force to the elastic membrane, causing the foreign object to fall out of the working cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of an exemplary embodiment of the present application;

[0024] Figure 2 is a schematic structural diagram of an exemplary embodiment of the working cavity in this application;

[0025] Figure 3It is a schematic structural diagram of a schematic implementation manner when the working cavity in the present application is switched to a working protrusion;

[0026] Figure 4 It is a schematic structural diagram of a schematic implementation manner of the working protrusion in the present application;

[0027] Figure 5 It is a schematic structural diagram of a schematic implementation manner when the working cavity in the present application accommodates foreign objects;

[0028] Figure 6 It is a schematic structural diagram of a schematic implementation manner of the isolation film in the present application;

[0029] Figure 7 It is a schematic structural diagram of a schematic implementation manner of the operating handle in the present application;

[0030] Figure 8 It is a schematic structural diagram of a schematic implementation manner of the jaws in the clamp assembly of the present application.

[0031] In the figure:

[0032] 101, elastic film; 102, working area; 103, working protrusion; 104, working cavity; 105, magnetic part; 106, adjusting part; 107, connecting area; 108, support rod; 109, isolation film;

[0033] 201, adjusting member;

[0034] 301, fixed tube;

[0035] 401, sheath tube; 402, spring tube;

[0036] 501, first connecting rod; 502, second connecting rod; 503, clamp jaw;

[0037] 601, operating handle, 602, first operating member; 603, first operating wire; 604, second operating member; 605, second operating wire; 606, third operating member; 607, third operating wire; 608, first guide rail;

[0038] 701, foreign object. Specific embodiments

[0039] For a clearer understanding of the technical features, purposes, and effects of the present application, the specific embodiments of the present application are now described with reference to the accompanying drawings. The same reference numerals in each figure represent components with the same or similar structures but the same functions.

[0040] In this text, "schematic" means "serving as an example, instance, or illustration", and any illustration or implementation described as "schematic" in this text should not be construed as a more preferred or advantageous technical solution.

[0041] To simplify the drawings, only the parts relevant to this application are schematically shown in each figure, and they do not represent the actual structure of the product. Additionally, to simplify the drawings for easier understanding, for components with the same structure or function in some figures, only one of them is schematically shown, or only one of them is labeled.

[0042] Please refer to Figures 1 to 8 to understand this application.

[0043] Refer to Figure 1 、 Figure 2 For example, the digestive tract foreign body removal device includes an elastic membrane 101, a fixed tube 301, and an adjusting member 201 disposed within the fixed tube 301 and slidably connected to the fixed tube 301. The adjusting member 201 is capable of moving along the axial direction of the fixed tube 301. The digestive tract foreign body removal device further includes a plurality of support rods 108. The elastic membrane 101 includes a connection region 107 and a working region 102 provided with a magnetic portion 105. The connection region 107 is disposed around the working region 102 and is connected to the fixed tube 301 through the plurality of support rods 108. The adjusting member 201 is connected to the adjusting portion 106 of the working region 102 and can drive the working region 102 to move; the elastic membrane 101 can be made of a magnetic rubber provided with magnetic particles, and the magnetic particles are distributed in the working region 102. Of course, the elastic membrane 101 can also be made of other materials having magnetism and elasticity, which will not be elaborated here.

[0044] In an embodiment of the present application, the projection of the elastic membrane 101 on the cross-section of the fixed tube 301 is circular, the projection of the working region 102 on the cross-section of the fixed tube 301 is circular, the projection of the adjusting portion 106 on the cross-section of the fixed tube 301 is located at the central position of the projection of the working region 102 on the cross-section of the fixed tube 301, the projection of the connection region 107 on the cross-section of the fixed tube 301 is disposed around the working region 102, and the annular connection region 107 is connected to the fixed tube 301 through the plurality of support rods 108.

[0045] The adjusting member 201 is capable of moving along the axial direction of the fixed tube 301. When the adjusting member 201 drives the adjusting portion 106 to move away from the fixed tube 301, refer to Figure 3 ,the support rods 108 restrict the movement of the connection region 107 so as to Figure 3The description is made in the indicated direction. The adjusting member 201 only drives the working area 102 to move upward. The elasticity of the elastic membrane 101 itself causes controllable elastic deformation of the working area 102 and the connecting area 107. Finally, the working area 102 is higher than the connecting area 107, and the working area 102 forms a working protrusion 103. See Figure 4 , a magnetic part 105 is provided in the working area 102. The magnetic part 105 can have a magnetic interaction with the magnetic metal, so that the working protrusion 103 can adsorb foreign objects 701 in the digestive tract. And due to the shape setting of the working protrusion 103 and the fact that the connecting area 107 has no magnetism, the foreign object 701 can only be connected to the working protrusion 103 under the magnetic attraction and will not be adsorbed on other components of this application; thus, the connection position of the foreign object 701 and the elastic membrane 101 is fixed; when the adjusting member 201 drives the adjusting part 106 to move in the direction close to the fixed tube 301, Figure 4 The description is made in the indicated direction. The working area 102 moves downward, and the working protrusion 103 formed by the working area 102 sinks to form a cavity. The working area 102 is transformed from the working protrusion 103 into a working cavity 104. During this process, for the foreign object 701 adsorbed on the working protrusion 103, due to the shape transformation of the working area 102, the working area 102 wraps the foreign object 701. Finally, under the adsorption of the magnetic part 105, the foreign object 701 enters the working cavity 104 formed by the working area 102. See Figure 5 , medical staff can take out the working cavity 104 to take out the foreign object 701.

[0046] During this process, due to the magnetic attraction, medical staff do not need to specifically clamp the foreign object 701 hidden in the folds of the digestive tract. And under the support of the adjusting member 201, the working protrusion 103 has a certain rigidity and can enter the folds relatively easily. The magnetic force of the magnetic part can be controlled to ensure the reliability and safety during the process of adsorbing the foreign object 701. It can both adsorb the foreign object 701 and avoid the situation of damaging the digestive tract due to excessive magnetic force during the process of adsorbing the foreign object 701. The magnetic part 105 can also be an electromagnet, and the electromagnet is electrically connected to an external control device through a wire, so as to control the magnetic force of the magnetic part 105 by controlling the magnitude of the current.

[0047] See Figure 1 , further, a plurality of support rods 108 are arranged in an array around the axis of the fixed tube 301 to ensure that when the elastic membrane 101 deforms, the support rods 108 can stably provide support force to the elastic membrane 101 and limit the position change of the connecting area 107, ensure that the working area 102 can have a stable shape change, and ensure the adsorption and wrapping of the foreign object 701 by the working area 102.

[0048] In an embodiment of the present application, the magnetic part 105 and the adjusting part 106 are oppositely arranged, and the magnetic part 105, the adjusting part 106, and the adjusting member 201 are coaxially arranged with respect to the axis of the fixed tube 301. Refer to Figure 3 , after the magnetic part 105 adsorbs the foreign object 701, the foreign object 701 can be located at the central position of the deformed working area 102. Thus, during the process of the working area 102 changing from the working protrusion 103 to the working cavity 104, the adjusting member 201 can always drive the foreign object 701 to move through the adjusting part 106 and the magnetic part 105, ensuring that the working cavity 104 can wrap the foreign object 701.

[0049] Those skilled in the technical field to which the present application belongs can understand that the projected shapes of the elastic membrane 101 and the working area 102 in the cross-section of the fixed tube 301 are not necessarily limited to circular shapes, and can also be square. The connecting area 107 is arranged around the working area 102, and the projection of the connecting area 107 in the cross-section of the fixed tube 301 is a square ring. Of course, other shapes are also possible and will not be elaborated here.

[0050] Those skilled in the technical field to which the present application belongs can understand that the installation position of the magnetic part 105 in the present application can be set at the bottom of the working cavity 104. Or, when the working area 102 is formed by magnetic rubber, the magnetic part 105 is provided on both the bottom and the wall of the working cavity. The installation position of the magnetic part 105 is subject to fixing the foreign object 701 and will not be elaborated here.

[0051] Refer to Figure 2 , in an embodiment of the present application, when the elastic membrane 101 does not undergo elastic deformation and is in a natural state, the working area 102 encloses the working cavity 104.

[0052] When the elastic membrane 101 does not undergo elastic deformation, under the action of its own shape and elasticity, it can naturally form the working cavity 104. Thus, after the foreign object 701 enters the working cavity 104, when the elastic membrane 101 wraps the foreign object 701 and takes the foreign object 701 out of the body, the state of the working cavity 104 can be maintained without the acting force of the adjusting member 201, avoiding the situation where the adjusting member 201 gives the elastic membrane 101 a wrong acting force, resulting in the foreign object 701 falling out of the working cavity 104. And when the elastic membrane 101 enters the digestive tract, the magnetic part 105 provided in the working area 102 is located in the working cavity 104, which can avoid the premature magnetic attraction between the foreign object 701 and the magnetic part 105, or the occurrence of uncontrollable contact, so that the contact position between the foreign object 701 and the magnetic part 105 is incorrect.

[0053] When the working area 102 transitions between the working cavity 104 and the working protrusion 103, the elasticity of the elastic membrane 101 enables it to maintain a certain shape during the transition, which is convenient for adsorbing and wrapping the foreign matter 701. In addition, the elasticity of the elastic membrane 101 enables it to adapt to the shapes of different foreign matter 701 when wrapping the foreign matter 701. The elastic membrane 101 can fit the foreign matter 701 to prevent the foreign matter 701 from scratching the digestive tract.

[0054] See also Figure 6 In one embodiment of the present application, the digestive tract foreign body removal device also includes an isolation membrane 109, which is connected to the connecting area 107 and the fixed tube 301. The isolation membrane 109, the elastic membrane 101 and the fixed tube 301 form an isolation cavity, the support rod 108 is arranged in the isolation cavity, and the adjustment member 201 passes through the isolation cavity and is connected to the adjustment part 106; when the working area 102 forms the working cavity 104, the working cavity 104 is arranged in the isolation cavity.

[0055] On the one hand, the isolation membrane 109 can prevent human tissue from entering between the support rods 108 and prevent human tissue from being damaged by the support rods 108. On the other hand, the isolation membrane 109 and the elastic membrane 101 form two layers of barriers. When the foreign body 701 is too sharp and pierces the elastic membrane 101, the isolation membrane 109 can isolate the foreign body 701 from contact with the digestive tract tissue and prevent the foreign body 701 from damaging the tissue.

[0056] See also Figure 7 In one embodiment of the present application, the support rod 108 is elastic; the digestive tract foreign body removal device also includes a sheath tube 401, and the fixed tube 301 is arranged in the sheath tube 401 and can move along the sheath tube 401; when the fixed tube 301 moves in the direction of entering the sheath tube 401, the adjusting member 201 enters the sheath tube 401, and the support rod 108 and the elastic membrane 101 undergo elastic deformation and are retracted in the sheath tube 401, making it convenient for the elastic membrane 101, the support rod 108 and the elastic membrane 101 to be retracted in the sheath tube 401 and enter the digestive tract through the instrument channel of the endoscope; when the fixed tube 301 leaves the sheath tube 401, it drives the support rod 108 and the elastic membrane 101 to leave the sheath tube 401, and the support rod 108 and the elastic membrane 101 change from the retracted state to the expanded state under the action of their own elasticity, so that the elastic membrane 101 can cover a larger area, making it convenient for the elastic membrane 101 to absorb and wrap the foreign body 701. When the elastic membrane 101 is connected to the isolation membrane 109 , the isolation membrane 109 can also move in and out of the sheath tube 401 along with the fixing tube 301 .

[0057] Further, the digestive tract foreign body removal device further includes an operating handle. The operating handle includes an operating body, a first operating member 602 slidably connected to the operating body, and a second operating member 604 slidably connected to the first operating member 602. The first operating member 602 is connected to a first guide rail 608, and the second operating member 604 is slidably connected to the first guide rail 608. The operating body communicates with the sheath 401 through a flexible tube 402. The first operating member 602 is connected to the fixed tube 301 through a first operating wire 603 passing through the flexible tube 402 to drive the fixed tube 301 to move along the sheath 401, so that the fixed tube 301 enters and exits the sheath 401. The second operating member 604 is connected to the adjusting member 201 through a second operating wire 605 passing through the flexible tube 402. When the second operating member 604 moves along the first operating member 602, the position of the adjusting member 201 is adjusted through the second operating wire 605 to drive the adjusting member 201 to move along the axis of the fixed tube 301, so as to switch the working area 102 between the working protrusion 103 and the working cavity 104. In the way that the second operating member 604 and the first operating member 602 are slidably connected, the second operating member 604 can move along the operating body with the first operating member 602, avoiding relative movement between the fixed tube 301 and the adjusting member 201, resulting in the adjusting member 201 driving the working area 102 to move relative to the fixed tube 301, and finally causing the wrong switching of the working area 102.

[0058] See Figure 7 , in an embodiment of the present application, the adjusting part 106 is connected with a clamp assembly, and the clamp assembly does not have a magnetic attraction effect with the magnetic part 105, avoiding the clamp assembly from affecting the magnetic part 105 to adsorb the foreign body 701; the operating wire capable of controlling the opening and closing of the clamp jaws in the clamp assembly passes through the adjusting part 106, the fixed tube 301 and is connected with the operating handle. See Figure 8 , the clamp assembly includes four connecting rods and a clamp arm 503 connected to two of the connecting rods. The four connecting rods include two second connecting rods 502 pivotally connected to each other and two first connecting rods 501 connected to the clamp arm 503. The two first connecting rods 501 are pivotally connected, one of the first connecting rods 501 and one of the second connecting rods 502 are pivotally connected, and the other first connecting rod 501 and the other second connecting rod 502 are pivotally connected. The two first connecting rods 501 are respectively connected with the clamp arm 503. The two clamp arms 503 can approach or move away from each other simultaneously. The two clamp arms 503 form a jaw. A third operating wire 607 is connected to the pivotal connection of the two second connecting rods 502. The operating body is further slidably connected with a third operating member 606 connected to the third operating wire 607. When the third operating member 606 moves, the pivotal connection of the two second connecting rods 502 moves away from or close to the operating body through the third operating wire 607, so as to control the opening and closing of the jaw.

[0059] In order to more stably remove the foreign object 701, the foreign object 701 can be clamped by the jaws, and the magnetic part 105 is used to fix the foreign object 701. Finally, under the dual action of the magnetic part 105 and the jaws, the foreign object 701 is firmly fixed, and the working area 102 wraps the foreign object 701, and then the foreign object 701 is safely removed.

[0060] Of course, another operating body can be set, and the third operating member 606 and the third operating wire 607 are connected to the operating body, which will not be elaborated here.

[0061] It should be understood that although this specification is described according to various embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0062] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present application, and they are not intended to limit the protection scope of the present application. Any equivalent implementation or change made without departing from the technical spirit of the present application, such as the combination, division or repetition of features, should be included in the protection scope of the present application.

Claims

1. A device for removing foreign bodies from the digestive tract, characterized in that, The invention comprises an elastic membrane, a fixed tube, an adjusting member disposed in the fixed tube and slidably connected to the fixed tube, and a plurality of support rods. The elastic membrane comprises a connecting area and a working area provided with a magnetic portion. The working area is made of magnetic rubber and the magnetic portions are distributed throughout the working area. The connecting area is disposed around the working area and is connected to the fixed tube via a plurality of support rods. The adjusting member is connected to the adjusting portion of the working area and can drive the working area to move. The adjusting member is movable along the axis of the fixed tube. When the adjusting member drives the adjusting portion to move away from the fixed tube, the working area forms a working protrusion capable of absorbing foreign matter. When the adjusting member drives the adjusting portion to move toward the fixing pipe, the working area is transformed from the working protrusion into a working cavity capable of wrapping foreign matter; When the elastic membrane does not undergo elastic deformation and is in a natural state, the working area encloses the working cavity.

2. The digestive tract foreign body removal device according to claim 1, characterized in that: The projection of the elastic membrane on the cross section of the fixed tube is circular, the projection of the working area on the cross section of the fixed tube is circular, the projection of the adjustment portion on the cross section of the fixed tube is located at the center of the projection of the working area on the cross section of the fixed tube, and the projection of the connection area on the cross section of the fixed tube is arranged around the working area.

3. The digestive tract foreign body removal device according to claim 2, characterized in that: A plurality of support rods are arranged in an array around the axis of the fixed tube.

4. The digestive tract foreign body removal device according to claim 1, characterized in that: The adjusting portion is connected to a clamp assembly, and an operating wire in the clamp assembly that can control the opening and closing of the clamp jaws passes through the adjusting portion, the fixing tube and is connected to an operating handle.

5. The digestive tract foreign body removal device according to claim 4, characterized in that: The clamp assembly does not generate magnetic attraction with the magnetic portion.

6. The digestive tract foreign body removal device according to claim 1, characterized in that: The digestive tract foreign body removal device further includes an isolation membrane, the isolation membrane being connected to the connection area and the fixed tube, the isolation membrane, the elastic membrane, and the fixed tube forming an isolation cavity, the support rod being disposed in the isolation cavity, and the adjustment member passing through the isolation cavity and connected to the adjustment portion; When the working area forms a working cavity, the working cavity is arranged in the isolation cavity.

7. The digestive tract foreign body removal device according to claim 1, characterized in that: The support rod is elastic; The digestive tract foreign body removal device further comprises a sheath tube, wherein the fixing tube is arranged in the sheath tube and can move along the sheath tube; When the fixing tube moves in the direction of entering the sheath tube, the adjusting member enters the sheath tube, and the supporting rod and the elastic membrane undergo elastic deformation and are retracted into the sheath tube; When the fixed tube moves away from the sheath tube, it drives the support rod and the elastic membrane away from the sheath tube. Under the action of their own elasticity, the support rod and the elastic membrane change from the retracted state to the deployed state.

8. The digestive tract foreign body removal device according to claim 7, wherein the digestive tract foreign body removal device further comprises an operating handle, the operating handle includes an operating body, a first operating member slidably connected to the operating body, and a second operating member slidably connected to the first operating member, and the operating body communicates with the sheath tube through a spring tube; the first operating member is connected to the fixed tube through a first operating wire to drive the fixed tube to move along the sheath tube; the second operating member is connected to the adjusting member through a second operating wire to drive the adjusting member to move along the axis of the fixed tube.

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