Airway foreign body taking-out device and equipment

Abstract

The invention provides an airway foreign matter taking-out device and equipment, and belongs to the technical field of foreign matter taking-out equipment. The device comprises a conveying catheter and an object taking part, the object taking part is arranged on the conveying catheter, and the object taking part is located at the end, stretching into the trachea, of the conveying catheter; an object taking net is arranged in the object taking part, the object taking net can expand to open a mesh net to take foreign matters, and meshes can be contracted to lock the foreign matters. Through the arrangement of the conveying catheter and the fetching net in the fetching part, the foreign matter in the trachea can be conveniently and effectively captured, and through the special design of the fetching net and the cooperation of the endoscope, the annular sliding block, the auxiliary block, the silk thread and other components, the purpose of fine adjustment of the position of the conveying catheter in the auxiliary components such as the artificial airway component is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of foreign body removal equipment, and in particular to an airway foreign body removal device and equipment. Background Art

[0002] Tracheal foreign bodies are a common emergency that seriously threatens the life and health of patients, especially in children. Relevant studies have shown that among the 397 cases of tracheal and bronchial foreign bodies in children selected from a hospital during 2010-2019, children under 5 years old accounted for as high as 50.6%. In actual medical scenarios, this is just the tip of the iceberg. It is estimated that the number of cases of tracheal foreign bodies in the country can reach tens of thousands each year, of which children account for about 60%-70%. These children are lively, curious, and have immature swallowing reflexes, so they are prone to inhaling foreign bodies into the trachea while playing or eating. There are various types of foreign bodies, such as peanuts, beans, melon seeds, and small toy parts. Taking the emergency department of a certain hospital as an example, more than 10 children with respiratory foreign bodies were treated in just one week during the Spring Festival last year. At the same time, other hospitals also frequently receive children with tracheal foreign bodies, ranging in age from about 1 year old to more than 10 years old. It seriously affects the health and life safety of children and brings a heavy burden to families.

[0003] However, traditional methods for removing foreign bodies from the trachea mainly include using tools such as tweezers and pliers to directly clamp them, or using suction devices to absorb them. Tools that directly clamp foreign bodies are extremely difficult to operate when faced with foreign bodies with irregular shapes and fragile textures. It is difficult for doctors to accurately control the force and angle during the clamping process, which can easily cause the foreign body to break. Once the foreign body is broken, its fragments may be further dispersed in the trachea, turning the original single foreign body into multiple smaller foreign bodies, greatly increasing the complexity and difficulty of removal. This not only prolongs the operation time, but may also cause more serious damage to the tracheal tissue due to multiple operations. Especially for children, the process of removing foreign bodies from the trachea is extremely cruel and painful, seriously affecting the physical and mental health of child patients.

[0004] In summary, in the existing tracheal foreign body removal technology, the fragility of foreign bodies is the most direct and urgent technical problem to be solved, which directly affects the success rate of foreign body removal and the patient's prognosis. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] The technical problem to be solved by the present invention is to provide an airway foreign body removal device and a removal apparatus thereof, so as to solve the technical problem that it is difficult to accurately grasp fragile foreign bodies using traditional methods.

[0007] (II) Technical solution

[0008] In order to achieve the above objectives, this utility model is implemented through the following technical solutions:

[0009] In the first aspect, the present application first proposes an airway foreign body removal device, comprising: a delivery catheter and a retrieval part, wherein the retrieval part is arranged on the delivery catheter, and the retrieval part is close to one end of the delivery catheter extending into the trachea; the retrieval part is provided with a retrieval net, and the retrieval net can expand to open the mesh to retrieve foreign bodies, and can shrink the mesh to lock foreign bodies.

[0010] Preferably, the retrieval net is a single-layer retrieval net or a double-layer retrieval net.

[0011] In one embodiment, when the retrieval net is a single-layer retrieval net, there are at least two situations:

[0012] The single-layer retrieval net is a first retrieval net, the mesh of the first retrieval net close to the end where the delivery tube extends into the trachea is smaller, the mesh of the first retrieval net far from the end where the delivery tube extends into the trachea is larger, and the end of the first retrieval net with larger mesh is used to allow foreign matter to enter the first retrieval net after expansion); or

[0013] The single-layer retrieval net is the second retrieval net, and the second retrieval net is provided with an inlet at one end close to the delivery tube extending into the trachea. The length of the inlet is less than half of the overall length of the second retrieval net, and the width of the inlet is less than or equal to half of the circumference of the cross-section of the retrieval net.

[0014] In another embodiment, the retrieval net is a double-layer retrieval net. When the retrieval net is a double-layer retrieval net, the device further includes:

[0015] An external taking net is fixedly connected to the delivery conduit, and an opening is provided on the external taking net;

[0016] An inner access net, which is extended into the trachea away from the delivery tube and is rotatably connected to the delivery tube, and the other end is stably connected to the head end of the delivery tube, the inner access net is provided with an opening, and the opening on the outer access net is adapted to the opening on the inner access net;

[0017] A rotating block is stably connected to one end of the internal retrieval net, and the rotating block is rotatably connected to the conveying conduit;

[0018] A limit block, fixedly connected to the rotating block;

[0019] A limiting groove is provided in the conveying conduit, the limiting groove is matched with the limiting block, the limiting groove is used to limit the rotation track of the limiting block, and the limiting groove and the limiting block are used to limit the rotation angle of the internal object taking net.

[0020] Preferably, the airway foreign body removal device further comprises:

[0021] The drawing wire is arranged in the conveying conduit, and the drawing wire is used to control the expansion of the object taking part.

[0022] More preferably, the airway foreign body removal device further comprises:

[0023] The endoscope is arranged at the end of the object-taking part which is away from the delivery catheter and extends into the trachea, and the endoscope is used to observe the internal conditions of the trachea.

[0024] Furthermore, an endoscope is arranged on the delivery catheter, and the endoscope is located at the end of the sampling portion that is away from the delivery catheter and extends into the trachea, and the endoscope and the sampling portion do not interfere with each other. The endoscope is used to observe the internal situation of the trachea, wherein the endoscope should have a high-resolution imaging system, and the optical performance of its lens should be excellent, and it should be able to provide clear and true images of the inside of the trachea, and the image resolution should not be lower than 1080p; the outer diameter of the endoscope should be as small as possible to reduce the occupation of the internal space of the delivery catheter, but at the same time to ensure the normal operation of its internal optical and electronic components, and its outer diameter can generally be controlled within the range of 3-5m.

[0025] In a second aspect, the present application further proposes an airway foreign body removal device, which comprises any of the airway foreign body removal devices described above, and further comprises:

[0026] The artificial airway component is sleeved on the periphery of the delivery catheter and is slidably connected to the delivery catheter. The artificial airway component is used to provide external support and guidance for the delivery catheter to maintain the patency and stability of the airway.

[0027] Furthermore, the airway foreign body removal device also includes:

[0028] An auxiliary block is disposed in the artificial airway component;

[0029] The annular slider is slidably connected to the long strip through groove opened in the auxiliary block. The annular slider is slidably connected to the conveying conduit, and the annular slider is used to drive the conveying conduit to move.

[0030] Furthermore, the airway foreign body removal device also includes:

[0031] There are several silk threads, one end of which is stably connected to the annular slider, and the other end of which passes through the artificial airway component and is connected to a pull ring 10. The silk threads are used to control the annular slider to slide in the long strip through groove.

[0032] Preferably, the artificial airway components include an endotracheal tube, a laryngeal mask, a nasopharyngeal airway, and an oropharyngeal airway.

[0033] (III) Beneficial effects

[0034] 1. The present application proposes an airway foreign body removal device, comprising a delivery catheter and a removal part, wherein the removal part is arranged on the delivery catheter and is close to one end of the delivery catheter extending into the trachea; a removal net is arranged inside the removal part, and the removal net can expand and open the mesh to capture foreign bodies, and shrink the mesh to lock foreign bodies. The airway foreign body removal device solves the technical problems that traditional methods are difficult to accurately capture foreign bodies and foreign bodies are fragile, and has a better removal effect.

[0035] 2. The present application proposes an airway foreign body removal device. When the removal net is set as a single layer, the first removal net is set to have a smaller mesh at one end and a larger mesh at the other end. When handling softer foreign bodies, the larger mesh provides convenient conditions for irregular and fragile foreign bodies to enter the removal net. Since these foreign bodies have irregular shapes, the larger mesh allows them to enter the removal net smoothly from more angles and directions; the smaller mesh can effectively prevent the irregular and fragile foreign bodies that have been caught in the net from leaking out of the gaps. Even if there are some external forces during the removal process, the small mesh can limit the movement of the foreign bodies and prevent them from escaping from the net; thereby enhancing the adaptability of the removal device to irregular and fragile foreign bodies, and improving the success rate of removing such foreign bodies and the convenience of operation; or

[0036] The second retrieval net is provided with an entry port of a specific size near one end of the endoscope. This design provides a way for foreign matter to enter, and by reasonably controlling the length and width of the entry port, it can prevent foreign matter from escaping from other directions while ensuring the retrieval efficiency.

[0037] 3 The present application proposes an airway foreign body removal device, in which the removal net is set as a double layer, the outer removal net and the inner removal net realize the rotation and opening adaptation at a specific angle through stable connection, rotation connection and the cooperation of the rotating block, the limit block and the limit groove; and this multi-dimensional and multi-level removal net design can capture foreign bodies from multiple angles and methods, providing multiple guarantees for the successful removal of foreign bodies and greatly improving the ability to deal with complex situations.

[0038] 4. The airway foreign body removal device proposed in this application, the design of the sliding connection between the artificial airway component and the delivery catheter, and the arrangement of related structures such as auxiliary blocks, annular sliders, long strip grooves and silk threads in the artificial airway component, provide great flexibility for the movement of the delivery catheter. During the operation, medical staff can easily adjust the position of the delivery catheter according to actual needs, so that the removal part can approach the foreign body more accurately. This flexible controllability can better adapt to the tracheal anatomical structure and foreign body position of different patients, and also help to maintain the stability of the operation during the removal process, reducing operational difficulties or additional damage to the patient caused by improper catheter position.

[0039] 5. The artificial airway components of the airway foreign body removal device proposed in this application can be replaced with endotracheal tubes, laryngeal masks, nasopharyngeal airways, oropharyngeal airways, which expands the scope of application of the device. In different clinical scenarios, the most suitable type of artificial airway can be selected according to the patient's specific conditions, such as age, condition, airway condition, etc. This interchangeability enables the airway foreign body removal device to work on more types of patients, while avoiding repeated intubation of patients, improving the clinical application value of the device and patient satisfaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0041] Figure 1 This is a schematic diagram of the structure of the airway foreign body removal device in Example 1 of the present application;

[0042] Figure 2 for Figure 1 A partial enlarged view of the structure at A in FIG.

[0043] Figure 3 This is a schematic diagram of the structure of the airway foreign body removal device according to the second embodiment of the present application;

[0044] Figure 4 for Figure 3 A partial enlarged view of the structure at position C in FIG.

[0045] Figure 5 This is a schematic diagram of the structure of the airway foreign body removal device according to the third embodiment of the present application;

[0046] Figure 6 It is a schematic diagram of the structure of the external access network and the internal access network in Example 3;

[0047] Figure 7 for Figure 6 A local enlarged view of the structure at D in FIG.

[0048] Figure 8 This is a schematic diagram of the structure of the airway foreign body removal device in Example 5 of the present application;

[0049] Fig. 9 This is a schematic diagram of the structure of the airway foreign body removal device in Example 6 of the present application;

[0050] Fig.10 This is a schematic diagram of the structure of the airway foreign body removal device in Example 7 of the present application;

[0051] Fig.11 It is a partial structural schematic diagram of the artificial airway component 6 in the fourth to eighth embodiments of the present application;

[0052] Fig.12 for Fig.11 A partial enlarged view of the structure at B in the middle;

[0053] In the figure: 1-delivery catheter; 2-collection part; 201-first collection net; 202-second collection net; 203-external collection net; 204-internal collection net; 3-drawing; 4-endoscope; 5-rotating block; 501-limiting block; 6-artificial airway component; 7-auxiliary block; 701-long strip groove; 8-annular slider; 9-silk thread; 10-pull ring. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solution and advantages of the practical embodiment clearer, the technical solution in the practical embodiment is clearly and completely described. Obviously, the described embodiment is a part of the practical embodiment, not all of the embodiments. Based on the embodiments in this practical, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this practical.

[0055] The embodiment of the present application provides an airway foreign body removal device and equipment thereof, which solves the technical problems that the traditional method is difficult to accurately grasp foreign bodies and the operation precision is insufficient. In actual use, the tracheal foreign body is efficiently grasped, and the purpose of moving the delivery catheter is controlled by precise operation.

[0056] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0057] Embodiment 1:

[0058] Reference Figure 1 A device for removing foreign bodies from an airway comprises: a delivery catheter 1 and a removal portion 2, wherein the removal portion 2 is arranged on the delivery catheter 1, and the removal portion 2 is located at one end of the delivery catheter 1 extending into the trachea; a removal net is arranged in the removal portion 2, and the removal net can expand to open the mesh to remove foreign bodies, and can shrink the mesh to lock foreign bodies.

[0059] The material of the delivery catheter 1 has good biocompatibility, flexibility and certain strength, and the inner diameter and outer diameter tolerances should be controlled within a very small range to ensure close fit with the object-retrieving part 2 and smooth insertion into the trachea. The material of the object-retrieving net should be harmless to the human body, not prone to allergic reactions, and have certain elasticity and toughness, such as medical polymer materials. The initial size and expandability of the mesh should be set according to actual needs to meet the needs of grabbing different types of foreign bodies.

[0060] In a preferred embodiment, the retrieval net can be set as a single-layer retrieval net or a double-layer retrieval net according to actual needs. Figure 1-4 As shown in , the retrieval net is a single-layer retrieval net, and Figure 5-7 The middle part is a double-layer retrieval net.

[0061] In one embodiment, the retrieval network is the first retrieval network 201, see Figure 1-2 As shown, at this time, the delivery catheter 1 provides a delivery channel and support for entering the patient's trachea for the foreign body removal operation. The object-removing portion 2 is located at the end of the delivery catheter 1 that extends into the trachea, and is used to grab foreign bodies. In a preferred embodiment, the object-removing portion 2 is located at the end of the delivery catheter 1 that extends into the trachea, and is located between the head end and other parts of the delivery catheter 1. The head end is used to gather and fix the part of the first object-removing net 201 close to the head end. The first object-removing net 201 can expand and contract. When expanded, the mesh is opened to take in foreign bodies. When contracted, the foreign bodies are locked to prevent the foreign bodies from breaking and falling during the removal process, thereby ensuring the integrity and success rate of foreign body removal.

[0062] In this embodiment, after the first retrieval net 201 is expanded, it is close to the end of the delivery catheter 1 extending into the trachea ( Figure 1 The mesh of the first retrieval net 201 at the lower end of the delivery conduit 1 is relatively small. At the same time, the mesh of the first retrieval net 201 at the end far from the delivery conduit 1 extending into the trachea is relatively large. The end of the first retrieval net 201 with relatively large mesh is convenient for foreign bodies to enter after expansion, especially for foreign bodies of relatively large sizes. The smaller mesh near the end of the delivery conduit 1 can prevent foreign bodies from escaping from this side, and has a good blocking effect on foreign bodies that have been captured by the net. This mesh design with gradually changing sizes increases the adaptability of the retrieval net to foreign bodies of different sizes, and improves the comprehensiveness and efficiency of retrieval.

[0063] Furthermore, the airway foreign body removal device further includes a wire drawing 3, which is disposed in the cavity of the delivery catheter 1, and the wire drawing 3 is used to control the expansion and opening of the object removal part 2. The wire drawing 3 disposed in the delivery catheter 1 is a key component for controlling the expansion of the object removal part 2. By operating the wire drawing 3, the medical staff can accurately control the expansion degree of the object removal part 2, thereby timely adjusting the state of the object removal net according to the size and position of the foreign body, ensuring that the object removal part 2 is in the best working state during the object removal process.

[0064] Preferably, the material of the wire drawing 3 has high strength and good flexibility, for example, medical stainless steel wire or high-strength medical synthetic fiber material can be selected to ensure that it will not break during repeated use. In addition, the diameter of the wire drawing 3 should be moderate, ensuring that its strength is sufficient to withstand the tension when the object taking part 2 expands and contracts, but not too thick to excessively affect the space in the delivery catheter.

[0065] Furthermore, the airway foreign body removal device further comprises an endoscope 4, which is disposed at a suitable position on the delivery catheter 1 for observing the internal conditions of the trachea. Preferably, the endoscope 4 is located at the end of the extraction part 2 away from the delivery catheter 1 extending into the trachea, and the endoscope 4 and the extraction part 2 do not interfere with each other. In specific implementation, the endoscope 4 is located on the extraction part 2 or on the end of the delivery catheter 1, for details, see Figure 2 .

[0066] The endoscope 4 installed on the delivery catheter 1 and not interfering with the retrieval part 2 is used to observe the internal situation of the trachea in real time. It allows medical staff to clearly see the position, size, shape and surrounding tissue conditions of foreign bodies in the trachea, thereby facilitating medical staff to more accurately operate the retrieval device, avoiding unnecessary damage to the inner wall of the trachea and other surrounding tissues during the retrieval process, thereby improving the safety and accuracy of the operation.

[0067] The working principle of the airway foreign body removal device of this embodiment and related preferred embodiments is:

[0068] During use, when it is necessary to remove foreign matter, first insert the delivery catheter 1 into the patient's trachea, and the removal part 2 thereof will then enter the trachea. Medical staff can control the expansion and opening of the removal part 2 through the wire drawing 3 in the delivery catheter 1. After the first removal net 201 in the removal part 2 expands and opens the mesh, foreign matter can enter smoothly because the mesh far from the inner end of the trachea is larger, while the smaller mesh near the inner end of the trachea can prevent foreign matter from escaping. After the net takes out the foreign matter, the removal net automatically recovers, shrinks the mesh to lock the foreign matter, and ensures the integrity and success rate of foreign matter removal. During the entire removal process, the internal conditions of the trachea, including the location, size, shape and surrounding tissue conditions of the foreign matter, can be observed through the endoscope 4, so as to more accurately control the removal device and avoid damaging the surrounding tissue.

[0069] Embodiment 2:

[0070] See also Figure 3-4 , which is different from the above embodiment in that the retrieval net of the above airway foreign body retrieval device is a second retrieval net 202, which is close to the end of the delivery catheter 1 extending into the trachea ( Figure 3The lower end of the middle delivery conduit 1 is provided with an inlet, the length of which is less than half of the overall length of the second retrieval net 202, and the width of which is less than or equal to half of the circumference of the cross section of the retrieval net. The length and width of the inlet should be reasonably designed according to the common size of foreign bodies in the trachea, ensuring that it can meet the requirements of foreign body entry without being too large to affect the structural stability of the retrieval net.

[0071] The inlet of the second retrieval net 202 near one end of the endoscope 4 provides a path and channel for foreign matter to enter the retrieval net. The specific length and width of the inlet are reasonably designed according to the size of common tracheal foreign matter, which not only ensures that foreign matter can enter smoothly, but also maintains the structural stability of the retrieval net, increases the success rate of retrieval and the adaptability of the retrieval net to different types of foreign matter. Among them, the shape of the mesh can be circular, elliptical or polygonal, etc., but it is necessary to ensure that the shape is stable during the expansion and contraction process, and the retrieval net will not be deformed to cause the foreign matter to escape or get stuck.

[0072] In addition, the length of the inlet can be designed according to the length distribution of common tracheal foreign bodies. For example, for common foreign bodies in children, the width of the inlet should be determined according to the circumference of the retrieval net and the maximum cross-sectional area of ​​the foreign body. For example, for a circular retrieval net, if its circumference is 20 mm, the width of the inlet can be set between 5-10 mm. The edge of the inlet should be smoothed to avoid scratching the foreign body or causing it to get stuck when entering. This can be achieved by grinding or special coating processes.

[0073] The working principle of the airway foreign body removal device of this embodiment and related preferred embodiments is:

[0074] During use, first, the delivery catheter 1 is inserted into the patient's trachea so that the retrieval part 2 is in a suitable position in the trachea; then, the medical staff controls the expansion of the retrieval part 2 through the wire drawing 3 in the delivery catheter 1, and the second retrieval net 202 is then ready to retrieve the object. During the retrieval process, since the second retrieval net 202 is provided with an inlet at one end close to the endoscope 4, foreign matter can enter the second retrieval net 202 through this inlet to achieve net retrieval of the foreign matter.

[0075] Embodiment three:

[0076] See also Figure 5-7, which is different from the above-mentioned embodiment, is that the retrieval net at the retrieval part 2 has two layers, namely, an inner retrieval net 204 and an outer retrieval net 203. The outer retrieval net 203 is stably connected to the delivery catheter 1; the inner retrieval net 204 is rotatably connected to the delivery catheter 1 at one end thereof that is away from the delivery catheter 1 and extends into the trachea, and the other end is stably connected to the head end of the delivery catheter 1. An opening is provided on the outer retrieval net 203, and an opening is also provided on the inner retrieval net 204, and the opening on the outer retrieval net 203 is adapted to the opening on the inner retrieval net 204. In order to coordinate the use of the inner retrieval net 204 and the outer retrieval net 203, the device proposed in this embodiment also includes:

[0077] The rotating block 5 is stably connected to one end of the internal object-taking net 204, and the rotating block 5 is rotatably connected to the conveying conduit 1; the limit block 501 is stably connected to the rotating block 5; the limit groove is opened in the conveying conduit 1, the limit groove is adapted to the limit block 501, the limit groove is used to limit the rotation trajectory of the limit block 501, and the limit groove and the limit block 501 cooperate together to limit the rotation angle of the internal object-taking net 204.

[0078] The outer retrieval net 203 is stably connected to the delivery catheter 1, and the inner retrieval net 204 is rotatably connected to part of the delivery catheter 1, and both are provided with openings and are adapted; the inner retrieval net 204 is driven to rotate by the rotating block 5 in the delivery catheter 1, so that the two openings can overlap or separate, thereby achieving the capture and locking of foreign objects; the limit block 501 and the limit groove accurately limit the rotation angle of the inner retrieval net 204, ensuring the accuracy and stability of the operation, and can effectively capture foreign objects of special shapes or positions.

[0079] In this embodiment, the external access net 203 and the internal access net 204 can be made of medical alloy materials with shape memory function or high-performance medical plastics, such as nickel-titanium alloy or polyetheretherketone (PEEK) materials, to ensure that they can still return to the original design shape after long-term use and multiple expansion, contraction and rotation operations. The opening positions on the external access net 203 and the internal access net 204 should be optimized according to the structure of the delivery catheter and the location where foreign matter may appear. The size of the opening can be determined according to the size range of common foreign matter. The rotating block 5 can be made of medical ceramics or metal materials with higher hardness, such as zirconia ceramics or titanium alloys. It can be connected to the internal access net 204 by welding or high-strength mechanical connection. Its material can be selected from high-strength materials that are the same as or compatible with the delivery catheter 1.

[0080] The working principle of the airway foreign body removal device of this embodiment and related preferred embodiments is:

[0081] During use, the delivery catheter 1 is first inserted, and then the wire drawing 3 controls the expansion of the object extraction part 2, and then the rotating block 5 is rotated to drive the internal object extraction net 204 to rotate, so that the openings of the external object extraction net 203 and the internal object extraction net 204 overlap, which is convenient for foreign matter to enter. After that, the rotation is stopped, and the external object extraction net 203 and the internal object extraction net 204 are rotated and reset, so that the mesh wires of the external object extraction net 203 and the internal object extraction net 204 are alternately arranged (for example, the mesh of the external object extraction net 203 corresponds to the mesh wire of the internal object extraction net 204, and the mesh wire of the external object extraction net 203 corresponds to the mesh of the internal object extraction net 204) to achieve the blocking of the opening. During the rotation process, the limit block 501 and the limit groove cooperate to ensure that the rotation angle of the internal object extraction net 204 is accurate, ensuring stable and effective operation, and then the rotation is stopped to prevent foreign matter from escaping. In the above process, the endoscope 4 is used to observe the internal situation to assist accurate operation.

[0082] Embodiment 4:

[0083] See also Figure 8-12 The present application also discloses an airway foreign body removal device, which includes the airway foreign body removal device described in any of the above embodiments, and also includes an artificial airway component 6, which is used in conjunction with the airway foreign body removal device described in any of the above embodiments. The artificial airway component 6 is sleeved on the periphery of the delivery catheter 1, and the artificial airway component 6 is slidably connected to the delivery catheter 1, providing a ready-made artificial airway for the airway foreign body removal device to enter the patient's trachea, and can facilitate the airway foreign body removal device to enter the airway and achieve foreign body removal while maintaining the patient's airway unobstructed and stable. In this way, the airway foreign body removal device can be inserted from the inside of the established artificial airway tool, reducing the pain of repeated direct intubation of the patient.

[0084] The material of the artificial airway component 6 in this embodiment is soft, comfortable and biocompatible, such as medical silicone rubber, and the surface in contact with the patient is smooth and burr-free to avoid irritation to the airway mucosa. The size of the artificial airway component 6 can be designed according to patients of different ages and body shapes, including children's type, adult type and other specifications.

[0085] The artificial airway component 6, which is sleeved on the periphery of the delivery catheter 1 and slidably connected thereto, provides external access channel support and guidance for the delivery catheter 1. It can maintain the patency and stability of the patient's airway, reduce the displacement and shaking of the delivery catheter 1 during operation, protect the surrounding tissues of the trachea from damage, and reduce the interference of external factors on the delivery catheter 1 and the retrieval operation.

[0086] Embodiment five:

[0087] In this embodiment, if Figure 8As shown, the artificial airway component 6 is a tracheal tube, and the airway foreign body removal device in the above-mentioned embodiments 1 to 3 and related preferred embodiments is inserted into the tracheal tube to form the airway foreign body removal device of this embodiment. Figure 8 shown.

[0088] In clinical practice, some patients will have an artificial airway established through endotracheal intubation, one end of which is inserted into the patient's trachea and the other end is connected to a ventilator or anesthesia machine, etc. At this time, when foreign bodies need to be removed, an airway foreign body removal device is inserted into the patient's trachea through the endotracheal tube to remove the foreign body.

[0089] Embodiment six:

[0090] In this embodiment, if Fig. 9 As shown, the artificial airway component 6 is a laryngeal mask, and the airway foreign body removal device in the above-mentioned embodiments 1 to 3 and related preferred embodiments is inserted into the laryngeal mask to form the airway foreign body removal device of this embodiment, specifically as shown in Fig. 9 shown.

[0091] In clinical practice, some patients will establish an artificial airway through a laryngeal mask, with one end of the laryngeal mask against the patient's glottis and the other end connected to a ventilator or anesthesia machine, etc. At this time, when foreign bodies need to be removed, an airway foreign body removal device is inserted into the patient's trachea through the laryngeal mask to remove the foreign body.

[0092] Embodiment seven:

[0093] In this embodiment, if Fig.10 As shown, the artificial airway component 6 is an oropharyngeal airway, and the airway foreign body removal device in the above-mentioned embodiments 1 to 3 and related preferred embodiments is inserted into the oropharyngeal airway to form the airway foreign body removal device of this embodiment, specifically as shown in FIG. Fig.10 shown.

[0094] In clinical practice, some patients will establish an artificial airway through an oropharyngeal airway, one end of which is inserted into the patient's trachea and the other end is located at the patient's glottis. When removing foreign objects at this time, an airway foreign body removal device is inserted through the oropharyngeal airway and extended into the patient's trachea to remove the foreign objects.

[0095] In addition, the artificial airway component 6 may also be a nasopharyngeal airway or other related tools, equipment or structures for establishing an artificial airway for a patient, which will not be described in detail here.

[0096] It should be noted that in actual application, the artificial airway component 6 is selected as a tracheal tube, laryngeal mask, oropharyngeal airway, or nasopharyngeal airway, which needs to be selected according to the actual situation of the patient, and the size of the artificial airway component 6 should be designed in various specifications according to patients of different age groups and body shapes, and its material should be soft, comfortable and have good biocompatibility, such as medical silicone or polyurethane material. When selecting, a comprehensive assessment should also be made based on factors such as the size of the patient's nasal or oral cavity, ventilation function, and the presence or absence of anatomical abnormalities. For example, for the nasopharyngeal airway, its length and diameter should match the patient's nasal anatomical structure to ensure that it can be inserted smoothly without causing damage to the nasal mucosa; for the oropharyngeal airway, its shape and size should be suitable for the oral structure, and can effectively maintain airway patency while avoiding compression of oral tissue.

[0097] Embodiment eight:

[0098] In this embodiment, see Figure 11-12 As shown, in order to facilitate the airway foreign body removal device in the above-mentioned embodiments four to seven and related preferred embodiments to more smoothly pass through the artificial airway components 6 such as the tracheal tube, laryngeal mask, oropharyngeal airway, nasopharyngeal airway, etc. into the patient's trachea, so as to smoothly approach the foreign body, a preferred way is that the airway foreign body removal device in any of the above-mentioned embodiments four to seven also includes: an auxiliary block 7 and an annular slider 8.

[0099] The auxiliary block 7 is arranged in the artificial airway component 6; the annular slider 8 is slidably connected to the long strip through groove 701 provided in the auxiliary block 7, and the long strip through groove 701 is used to define the radial movement trajectory of the annular slider 8 in the artificial airway component 6. The annular slider 8 is slidably connected to the delivery catheter 1, and the annular slider 8 is used to drive the delivery catheter 1 to move along the axial direction of the artificial airway component 6.

[0100] The auxiliary block 7 is arranged in the artificial airway component 6 to provide a stable installation base and movement space for the annular slider 8; the annular slider 8 slides radially along the artificial airway component 6 in the auxiliary block 7, which can realize the smooth movement of the delivery catheter 1 in the artificial airway component 6, making it convenient for medical staff to adjust the position of the delivery catheter 1 more accurately.

[0101] Among them, the material of the auxiliary block 7 can be selected from the same or similar medical plastic material as the artificial airway component 6, and its internal structure should be designed to accommodate the annular slider 8 and ensure the smooth sliding of the annular slider 8, such as a circular, rounded rectangular or elliptical inner cavity; the annular slider 8 can be made of medical polymer materials with a low friction coefficient, such as polytetrafluoroethylene (PTFE) or ultra-high molecular weight polyethylene (UHMWPE), and the matching clearance between its outer diameter and the inner cavity of the auxiliary block 7 should be controlled between 0.1-0.3mm to ensure smooth sliding without obvious shaking; the connection method of the annular slider 8 and the delivery catheter 1 should ensure flexible relative sliding between the two, and at the same time will not loosen or detach, which can be achieved through a special card slot or clamping structure.

[0102] Embodiment nine:

[0103] In order to further ensure that the annular slider 8 drives the delivery catheter 1 to slide along the radial direction of the artificial airway component 6 more smoothly and conveniently for precise control, a more preferred method is that the airway foreign body removal device in any of the above-mentioned embodiments 4 to 8 also includes: silk thread 9. There are a plurality of silk threads 9, and one end of the silk thread 9 is stably connected to the annular slider 8, and the other end passes through the through hole opened along the axial direction inside the artificial airway component 6 and extends to the outer end of the artificial airway component 6 (that is, the end away from the artificial airway component 6 and close to the patient's trachea), and is connected to a pull ring 10. Figure 11-12 As shown, the wire 9 is used to control the annular slider 8 to slide in the long strip through groove 701, which is a transition section from radial to axial in the artificial airway component 6. The through hole is smoothly set, or a small steering wheel is added to smoothly transition the pulling force of the pull ring 10.

[0104] The long strip through groove 701 limits the moving track of the annular slider 8, ensuring that it can only move in a predetermined direction, thereby ensuring the accuracy of the movement of the delivery catheter 1. One end of the wire 9 is connected to the annular slider 8, and the other end passes through the artificial airway component 6 and is connected to the pull ring. The medical staff controls the tension of the wire 9 by pulling the pull ring 10, driving the annular slider 8 to slide in the long strip through groove 701, thereby achieving accurate adjustment of the position of the delivery catheter 1.

[0105] Among them, the width of the long strip through groove 701 should be designed according to the size and movement accuracy requirements of the annular slider 8 to ensure that the annular slider 8 slides smoothly in the through groove without getting stuck; the length of the long strip through groove 701 should be determined according to the expected movement range of the delivery catheter 1 in the artificial airway component 6 to ensure that the demand for position adjustment of the delivery catheter 1 during the object collection operation can be met; the silk thread 9 should be made of high-strength, low-elasticity medical materials, such as medical polyester fiber, and it can be ensured that it will not break during the pulling process and can accurately transmit the pulling force; the size and shape of the pull ring 10 should be convenient for medical staff to operate, and can be designed to be round or elliptical.

[0106] The working principle of the airway foreign body removal device of embodiments 4 to 9 and related preferred embodiments is as follows:

[0107] When in use, the artificial airway component 6 is first sleeved on the periphery of the delivery catheter 1, and it is slidably connected with the delivery catheter 1 to provide external support and guidance for the delivery catheter 1, maintain the smooth and stable airway, reduce displacement and shaking, protect the tissues around the trachea, and reduce external interference. When the position of the delivery catheter 1 needs to be adjusted, by pulling the pull ring 10, the silk thread 9 connected to the annular slider 8 in the artificial airway component 6 is driven, the tension of the silk thread 9 is controlled, and the annular slider 8 is driven to move, thereby realizing the smooth movement of the delivery catheter 1 in the artificial airway component 6 and accurately adjusting its position. When the artificial airway component 6 is actually selected, the artificial airway component 6 can be selected as a tracheal tube, laryngeal mask, oropharyngeal airway, nasopharyngeal airway, etc. according to the specific conditions such as the patient's age, airway anatomical structure, and condition, so as to increase the flexibility and applicability of the equipment, ensure the smoothness of the airway, and make the foreign body removal operation go smoothly.

[0108] The figures depicted in the accompanying drawings are example figures, and their purpose is only to more intuitively demonstrate the key structure and connection relationship of an airway foreign body removal device of the present invention; in actual applications, the appearance and size of the device can be adjusted and optimized according to specific needs.

[0109] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the above preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0110] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An airway foreign body removal device, comprising a delivery catheter (1) and a removal portion (2), characterized in that: The object-retrieving portion (2) is arranged on the delivery catheter (1) and is close to the end of the delivery catheter (1) extending into the trachea; a object-retrieving net is arranged inside the object-retrieving portion (2), and the object-retrieving net can expand to open the mesh to retrieve foreign objects, and can shrink the mesh to lock foreign objects.

2. The airway foreign body removal device according to claim 1, characterized in that: The retrieval net is a single-layer retrieval net or a double-layer retrieval net.

3. The airway foreign body removal device according to claim 2, characterized in that: When the object-taking net is a single-layer object-taking net, it comprises: The single-layer object retrieval net is a first object retrieval net (201), the mesh of the end of the first object retrieval net (201) close to the delivery catheter (1) extending into the trachea is smaller, and the mesh of the end of the first object retrieval net (201) away from the delivery catheter (1) extending into the trachea is larger, and the end of the first object retrieval net (201) with the larger mesh is used to allow foreign matter to enter the first object retrieval net (201) after expansion; or The single-layer retrieval net is a second retrieval net (202), and the second retrieval net (202) is provided with an inlet near one end of the delivery conduit (1) extending into the trachea.

4. The airway foreign body removal device according to claim 2, characterized in that: The object-taking net is a double-layer object-taking net, and the double-layer object-taking net comprises: an outer object-taking net (203) and an inner object-taking net (204); The external object taking net (203) is fixedly connected to the delivery catheter (1), and an opening is provided on the external object taking net (203); one end of the internal object taking net (204) extending into the trachea away from the delivery catheter (1) is rotatably connected to the delivery catheter (1), and the other end is fixedly connected to the head end of the delivery catheter (1), and an opening is provided on the internal object taking net (204), and the opening on the external object taking net (203) is matched with the opening on the internal object taking net (204); The device further comprises: a rotating block (5) which is fixedly connected to one end of the internal object taking net (204), and the rotating block (5) is rotatably connected to the inside of the conveying conduit (1); The limit block (501) is fixedly connected to the rotating block (5); the limit groove is provided in the conveying conduit (1); the limit groove is adapted to the limit block (501), and the limit groove is used to limit the rotation trajectory of the limit block (501).

5. The airway foreign body removal device according to any one of claims 1 to 4, characterized in that: The airway foreign body removal device also includes: The drawing wire (3) is arranged in the conveying conduit (1) and is used to control the expansion of the taking part (2).

6. The airway foreign body removal device according to claim 5, characterized in that: The airway foreign body removal device also includes: The endoscope (4) is arranged at the end of the object-retrieving portion (2) that is away from the delivery catheter (1) and extends into the trachea.

7. An airway foreign body removal device, comprising the airway foreign body removal device according to any one of claims 1 to 6, characterized in that: The device also includes: The artificial airway component (6) is sleeved on the periphery of the delivery catheter (1), and the artificial airway component (6) is slidably connected to the delivery catheter (1).

8. The airway foreign body removal device according to claim 7, characterized in that: Also includes: An auxiliary block (7) is arranged in the artificial airway component (6); The annular slider (8) is slidably connected to the long strip through groove (701) provided in the auxiliary block (7); the annular slider (8) is sleeved on the periphery of the conveying conduit (1) and is slidably connected to the conveying conduit (1).

9. The airway foreign body removal device according to claim 8, characterized in that: Also includes: A plurality of silk threads (9), one end of each of the silk threads (9) is stably connected to the annular slider (8), and the other end of each of the silk threads (9) passes through the artificial airway component (6) and is then connected to a pull ring 10.

10. The airway foreign body removal device according to claim 7, characterized in that: The artificial airway components (6) include a tracheal tube, a laryngeal mask, an oropharyngeal airway, and a nasopharyngeal airway.

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