Airway foreign body taking-out device and equipment

Abstract

The utility model 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, foreign matters in the trachea can be conveniently and effectively captured, and through the special design of the fetching net and the cooperation of an endoscope, an annular sliding block, an auxiliary block, a silk thread and other components, the purpose of fine adjustment of the position of the conveying catheter in the auxiliary components such as an artificial airway component is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a foreign matter taking out equipment technical field especially relates to a gas passage foreign matter taking out device and equipment. BACKGROUND

[0002] Tracheal foreign matter is a common emergency that seriously threatens the life and health of patients, especially in the children group. Related research shows that in the selected 397 cases of children tracheal and bronchial foreign matter cases in a hospital during 2010-2019, children under the age of 5 accounted for as high as 50.6%. In the actual medical scene, this is only the tip of the iceberg, according to estimates, the number of cases of tracheal foreign matter in the country every year can reach tens of thousands, of which children patients account for about 60%-70%. These children are easy to inhale foreign matter into the trachea during play or eating because of their lively and curious nature and immature swallowing reflex. Foreign matter is diverse, common ones include peanuts, beans, melon seeds, toy small parts, etc. Taking the emergency department of a hospital as an example, only last spring festival week, more than 10 cases of children with respiratory tract foreign matter were treated. At the same time, other hospitals also frequently receive children with tracheal foreign matter, aged from 1 to more than 10 years old. It seriously affects the health and life safety of children and brings heavy burden to families.

[0003] However, the traditional tracheal foreign matter taking out method mainly includes using tweezers, forceps and other tools to directly clamp or using suction devices to suck. The tool for directly clamping foreign matter has great difficulty in operation when facing irregular-shaped and fragile foreign matter. Doctors are difficult to accurately control the force and angle during clamping, which is easy to cause foreign matter to break. Once the foreign matter breaks, its fragments may further scatter in the trachea, making the original single foreign matter become multiple smaller foreign matters, greatly increasing the complexity and difficulty of taking out. This not only prolongs the operation time, but also may cause more serious damage to the tracheal tissue due to multiple operations. Especially for children, the tracheal foreign matter taking out process is extremely cruel and painful, which seriously affects the physical and mental health of children patients.

[0004] In summary, in the existing tracheal foreign matter taking out technology, the problem of fragile foreign matter is the most direct and urgent technical problem, which directly affects the success rate of foreign matter taking out and the prognosis of patients. UTILITY MODEL CONTENT

[0005] (I) Technical problem solved

[0006] The technical problem to be solved by the utility model is to provide a gas passage foreign matter taking out equipment and taking out device to solve the technical problem that the traditional method is difficult to accurately grasp fragile foreign matter.

[0007] (II) Technical scheme

[0008] To achieve the above object, the utility model discloses the following technical scheme:

[0009] In a first aspect, the application first proposes a kind of airway foreign body extraction device, comprising: delivery catheter and object taking part, above-mentioned object taking part is set on delivery catheter, and above-mentioned object taking part is close to the end of delivery catheter and stretches into trachea;Object taking net is equipped in above-mentioned object taking part, the object taking net can be expanded and open mesh net takes foreign matter, and can contract mesh and lock foreign matter.

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

[0011] In one embodiment, when the object taking net is a single-layer object taking net, at least two cases are included:

[0012] The single-layer object taking net is a first object taking net, the mesh of the first object taking net close to the end of the delivery catheter and stretching into the trachea is smaller, the mesh of the first object taking net away from the end of the delivery catheter and stretching into the trachea is larger, and the end of the first object taking net with larger mesh is used to make foreign matter enter the first object taking net after expansion;Or

[0013] The single-layer object taking net is a second object taking net, the end of the second object taking net close to the end of the delivery catheter and stretching into the trachea is provided with an object inlet, the length of the object inlet is less than one-half of the overall length of the second object taking net, and the width of the object inlet is less than or equal to one-half of the cross-sectional circumference of the object taking net.

[0014] In another embodiment, when the object taking net is a double-layer object taking net, the device further includes:

[0015] An outer object taking net is fixedly connected to the delivery catheter, and the outer object taking net is provided with an opening;

[0016] An inner object taking net is stably connected to the head end of the delivery catheter away from the end of the delivery catheter and stretching into the trachea, and the inner object taking net is provided with an opening, and the opening of the outer object taking net is matched with the opening of the inner object taking net;

[0017] A rotating block is stably connected to one end of the inner object taking net, and the rotating block is rotatably connected to the delivery catheter;

[0018] A limiting block is fixedly connected to the rotating block;

[0019] A limiting groove is formed in the delivery catheter, the limiting groove is matched with the limiting block, the limiting groove is used for limiting the rotating track of the limiting block, and the limiting groove and the limiting block are used for limiting the rotating angle of the inner object taking net.

[0020] Preferably, the airway foreign body extraction device further includes:

[0021] A pull wire is arranged in the delivery catheter, and the pull wire is used to control the expansion of the object taking part.

[0022] More preferably, the airway foreign matter taking-out device further comprises:

[0023] An endoscope is arranged at the end of the object taking part away from the delivery catheter and extending into the trachea, and the endoscope is used to observe the internal condition of the trachea.

[0024] Further, the endoscope is arranged on the delivery catheter, and the endoscope is at the end of the object taking part away from the delivery catheter and extending into the trachea, and the endoscope does not interfere with the object taking part, and the endoscope is used to observe the internal condition of the trachea, wherein the endoscope should have a high-resolution imaging system, and the optical performance of the lens should be excellent, and the endoscope can provide clear and real images of the internal condition of the trachea, and the image resolution is not less 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, the normal work of the internal optical and electronic elements should be ensured, and generally, the outer diameter of the endoscope can be controlled in the range of 3-5 mm.

[0025] In a second aspect, the application further provides an airway foreign matter taking-out device, which comprises the airway foreign matter taking-out device described above, and further comprises:

[0026] An artificial airway part is sleeved on the periphery of the delivery catheter, and the artificial airway part is in sliding connection with the delivery catheter, and the artificial airway part is used to provide external support and guidance for the delivery catheter, and maintain the patency and stability of the airway.

[0027] Further, the airway foreign matter taking-out device further comprises:

[0028] An auxiliary block is arranged in the artificial airway part.

[0029] A ring-shaped sliding block is in sliding connection with a long-slot through groove arranged in the auxiliary block, and the ring-shaped sliding block is in sliding connection with the delivery catheter, and the ring-shaped sliding block is used to drive the movement of the delivery catheter.

[0030] Further, the airway foreign matter taking-out device further comprises:

[0031] A plurality of pull wires are arranged, and one end of the pull wire is in stable connection with the ring-shaped sliding block, and the other end of the pull wire penetrates through the artificial airway part and is connected with a pull ring 10, and the pull wire is used to control the sliding of the ring-shaped sliding block in the long-slot through groove.

[0032] Preferably, the artificial airway part comprises a tracheal catheter, a laryngeal mask, a nasopharyngeal airway, and an oropharyngeal airway.

[0033] (Three) beneficial effects

[0034] 1. The airway foreign body removal device provided by the application comprises a delivery catheter and a foreign body removal part, wherein the foreign body removal part is arranged on the delivery catheter and is close to the end of the delivery catheter extending into the trachea; the foreign body removal part is provided with a foreign body removal net, and the foreign body removal net can be expanded to open the mesh to remove foreign bodies and can be contracted to lock foreign bodies. The airway foreign body removal device solves the technical problems that the conventional method is difficult to accurately grasp foreign bodies and the foreign bodies are fragile, and has better foreign body removal effect.

[0035] 2. When the foreign body removal net is arranged as a single layer, the first foreign body removal net is arranged such that one end of the mesh is smaller and the other end is larger. When dealing with soft foreign bodies, the larger mesh provides a convenient condition for irregular and fragile foreign bodies to enter the foreign body removal net. Since the foreign bodies are irregular in shape, the larger mesh can allow them to smoothly enter the foreign body removal net from more angles and directions. The smaller mesh can effectively prevent irregular and fragile foreign bodies that have been caught in the mesh from leaking out of the gap. Even if there is some external force during the foreign body removal process, the small mesh can limit the movement of the foreign bodies and prevent them from escaping from the mesh. Thus, the adaptability of the foreign body removal device to irregular and fragile foreign bodies is enhanced, and the success rate of removing such foreign bodies and the convenience of operation are improved.

[0036] The second foreign body removal net is provided with a specific size of a foreign body inlet close to the end of the endoscope. This design provides a way for foreign bodies to enter, and by reasonably controlling the length and width of the foreign body inlet, the foreign body removal efficiency can be ensured while preventing the foreign bodies from escaping from other directions.

[0037] 3. When the foreign body removal net is arranged as a double layer, the outer foreign body removal net and the inner foreign body removal net are stably connected, rotationally connected, and cooperated with the rotating block, the limiting block and the limiting slot to realize the rotation at a specific angle and the opening adaptation. The multi-dimensional and multi-level foreign body removal net design captures foreign bodies from multiple angles and ways, providing multiple safeguards for successfully removing foreign bodies and greatly improving the ability to deal with complex situations.

[0038] 4. The airway foreign body removal device provided by the application is provided with a design that the artificial airway part is slidably connected with the delivery catheter and a design that the artificial airway part is provided with an auxiliary block, an annular sliding block, a long strip-shaped through slot and a wire and other related structures, which provides 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 the actual needs, so that the foreign body removal part can more accurately approach the foreign bodies. This flexible controllability can better adapt to the tracheal anatomical structures and foreign body positions of different patients, and also helps to maintain the stability of the operation during the foreign body removal process, reducing the operation difficulties or additional harm to the patient caused by improper catheter position.

[0039] 5. The airway foreign body removal device proposed in this application allows for the replacement of artificial airway components with endotracheal tubes, laryngeal masks, nasopharyngeal airways, and oropharyngeal airways, thus expanding the device's applicability. In different clinical scenarios, the most suitable type of artificial airway can be selected based on the patient's specific condition, such as age, illness, and airway status. This replaceability enables the airway foreign body removal device to function effectively in a wider range of patients, while avoiding repeated intubation and improving the device's clinical application value and patient satisfaction. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

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

[0042] Figure 2 for Figure 1 A magnified view of the structure at point A in the image;

[0043] Figure 3 This is a schematic diagram of the airway foreign body removal device according to Embodiment 2 of this application;

[0044] Figure 4 for Figure 3 A magnified view of the structure at point C in the image;

[0045] Figure 5 This is a schematic diagram of the airway foreign body removal device according to Embodiment 3 of this application;

[0046] Figure 6 This is a schematic diagram of the structure of the outer and inner retrieval nets in Example 3;

[0047] Figure 7 for Figure 6 A magnified view of the structure at point D in the image;

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

[0049] Figure 9 This is a schematic diagram of the airway foreign body removal device in Embodiment Six of this application;

[0050] Figure 10 This is a schematic diagram of the airway foreign body removal device in Embodiment 7 of this application;

[0051] Figure 11 This is a schematic diagram of the six parts of the artificial airway component in Embodiments 4 to 8 of this application;

[0052] Figure 12 for Figure 11 A magnified view of the structure at point B in the middle;

[0053] In the figure: 1-Delivery tube; 2-Retrieval section; 201-First retrieval net; 202-Second retrieval net; 203-Outer retrieval net; 204-Inner retrieval net; 3-Wire puller; 4-Endoscope; 5-Rotating block; 501-Limiting block; 6-Artificial airway component; 7-Auxiliary block; 701-Long strip-shaped channel; 8-Annular slider; 9-Wire; 10-Pull ring. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in this utility model are described clearly and completely. Obviously, the described embodiments are only some, not all, of the embodiments in this utility model. All other embodiments obtained by those skilled in the art based on the embodiments in this utility model without creative effort are within the scope of protection of this utility model.

[0055] This application provides an airway foreign body removal device and apparatus, solving the technical problems of traditional methods' difficulty in accurately grasping foreign bodies and insufficient operational precision. In practical use, it achieves efficient grasping of tracheal foreign bodies, while simultaneously enabling precise operational control of the delivery tube for movement.

[0056] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0057] Example 1:

[0058] Reference Figure 1 A foreign body removal device for the airway includes: a delivery conduit 1 and a retrieval part 2, wherein the retrieval part 2 is disposed on the delivery conduit 1 and is located at the end of the delivery conduit 1 that extends into the trachea; the retrieval part 2 is provided with a retrieval net, which can expand to open the mesh to retrieve the foreign body and can retract the mesh to lock the foreign body.

[0059] The material of the delivery conduit 1 has good biocompatibility, flexibility and certain strength, and the inner diameter and outer diameter size tolerance should be controlled within a very small range to ensure the close fit with the object taking part 2 and the smooth insertion in the trachea. The material of the object taking net is selected to be harmless to the human body, not easy to cause allergic reaction and has certain elasticity and toughness, such as medical polymer material. The initial size of the mesh and the expandable multiple need to be set according to the actual demand to meet the grasping demand of different types of foreign matters.

[0060] In a preferred embodiment, the object taking net can be set as a single-layer object taking net or a double-layer object taking net according to the actual demand. Figures 1-4 The object taking net is a single-layer object taking net as shown in Figures 5-7 , and is a double-layer object taking net.

[0061] In one embodiment, the object taking net is a first object taking net 201, as shown in Figures 1-2 , at this time, the delivery conduit 1 provides a delivery channel and support for the foreign matter taking operation to enter the trachea of the patient. The object taking part 2 is located at the end of the delivery conduit 1 extending into the trachea for grasping foreign matters. In a preferred embodiment, the object taking part 2 is located at the end of the delivery conduit 1 extending into the trachea and is in the middle of the head end and other parts of the delivery conduit 1, and the head end is used to fold and fix the part of the first object taking net 201 close to the head end. The first object taking net 201 can expand and contract, and when it expands, the mesh opens to take in foreign matters, and when it contracts, it locks the foreign matters to prevent the foreign matters from breaking and falling during the taking process, thereby ensuring the integrity and success rate of the foreign matter taking.

[0062] In this embodiment, after the first object taking net 201 expands, the mesh close to the end of the delivery conduit 1 extending into the trachea (the lower end of the delivery conduit 1 in Figure 1 ) is small, and at the same time, the mesh far from the end of the delivery conduit 1 extending into the trachea is large. The end of the first object taking net 201 with large mesh is convenient for the foreign matters to enter after expansion, especially for larger size foreign matters. The small mesh close to the end of the delivery conduit 1 can prevent the foreign matters from escaping from this side, and has a good blocking effect on the foreign matters that have been taken by the net. The design of the mesh with gradually changing size increases the adaptability of the object taking net to different size foreign matters, and improves the comprehensiveness and efficiency of the object taking.

[0063] Further, the above-mentioned airway foreign matter taking device further comprises a pull wire 3 arranged in the cavity of the delivery conduit 1, which is used to control the expansion of the object taking part 2. The pull wire 3 arranged in the delivery conduit 1 is a key component for controlling the expansion of the object taking part 2. The medical staff can accurately control the expansion degree of the object taking part 2 by operating the pull wire 3, so as to timely adjust the state of the object taking net according to the size and position of the foreign matter, and ensure that the object taking part 2 is in the best working state during the object taking process.

[0064] Preferably, the material of the pull wire 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 pull wire 3 should be moderate, which can ensure that it has sufficient strength to withstand the tension when the retrieval portion 2 expands and contracts, and also cannot be too thick to excessively affect the space inside the delivery catheter.

[0065] Further, the above-mentioned airway foreign body retrieval device further comprises an endoscope 4 arranged at a suitable position on the delivery catheter 1 for observing the internal condition of the trachea. Preferably, the endoscope 4 is located at the end of the retrieval portion 2 away from the delivery catheter 1 extending into the trachea, and the endoscope 4 and the retrieval portion 2 do not interfere with each other. In specific implementation, the endoscope 4 is located on the retrieval portion 2 or on the end of the delivery catheter 1, which can be specifically referred to Figure 2 .

[0066] The above-mentioned endoscope 4 arranged on the delivery catheter 1 and not interfering with the retrieval portion 2 is used for real-time observation of the internal condition of the trachea, which can allow medical personnel to clearly see the position, size, shape of the foreign body in the trachea and the condition of the surrounding tissue, thereby facilitating medical personnel to more accurately control the retrieval device and avoiding unnecessary damage to the surrounding tissue such as the inner wall of the trachea during the retrieval process, thereby improving the safety and accuracy of the operation.

[0067] The working principle of the airway foreign body retrieval device of the present embodiment and related preferred embodiments is as follows:

[0068] In use, when the foreign body needs to be retrieved, the delivery catheter 1 is first inserted into the trachea of the patient, and the retrieval portion 2 enters the trachea along with it. Medical personnel can control the expansion of the retrieval portion 2 by the pull wire 3 in the delivery catheter 1. After the first retrieval net 201 in the retrieval portion 2 expands and opens the mesh, the foreign body can enter smoothly due to the larger mesh away from the inner end of the trachea, and the smaller mesh near the inner end of the trachea can prevent the foreign body from escaping. After the foreign body is retrieved by the net, the retrieval net automatically recovers and locks the foreign body in the contracted mesh, thereby ensuring the integrity and success rate of the foreign body retrieval. During the entire retrieval process, the internal condition of the trachea, including the position, size, shape of the foreign body and the condition of the surrounding tissue, can be observed through the endoscope 4, thereby more accurately controlling the retrieval device and avoiding damage to the surrounding tissue.

[0069] Embodiment Two:

[0070] Referring to Figures 3-4 The difference between the above-mentioned embodiment and the above-mentioned embodiment is that the retrieval net of the above-mentioned airway foreign body retrieval device is a second retrieval net 202, and the second retrieval net 202 is located at the end of the delivery catheter 1 extending into the trachea Figure 3The inlet opening is provided at the lower end of the delivery conduit 1, and has a length less than half of the overall length of the second retrieval net 202 and a width less than or equal to half of the circumference of the cross section of the retrieval net. The length and width of the inlet opening should be reasonably designed according to the common sizes of tracheal foreign bodies, to ensure that the foreign bodies can enter the retrieval net, and the structure stability of the retrieval net is not affected.

[0071] The inlet opening at the end of the second retrieval net 202 close to the endoscope 4 provides a path for the foreign bodies to enter the retrieval net. The specific length and width of the inlet opening are reasonably designed according to the common sizes of tracheal foreign bodies, to ensure that the foreign bodies can enter smoothly, and the structure stability of the retrieval net is maintained, to increase the success rate of retrieval and the adaptability of the retrieval net to different types of foreign bodies. The shape of the mesh can be circular, oval or polygonal, but it should be stable in shape during expansion and contraction, and the deformation of the retrieval net should not cause the foreign bodies to escape or get stuck.

[0072] In addition, the length of the inlet opening 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 opening should be determined according to the circumference of the retrieval net and the maximum cross-sectional area of the foreign body. For a circular retrieval net with a circumference of 20 mm, the width of the inlet opening can be set between 5-10 mm. The edges of the inlet opening should be smoothed to avoid scratching the foreign body or causing the foreign body to get stuck when the foreign body enters. Polishing or special coating process can be used to achieve this.

[0073] The working principle of the airway foreign body retrieval device of the present embodiment and related preferred embodiments is as follows:

[0074] In use, first, the delivery conduit 1 is inserted into the trachea of the patient, 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 pull wire 3 in the delivery conduit 1, and the second retrieval net 202 is ready for retrieval. During the retrieval process, since the second retrieval net 202 is provided with an inlet opening close to one end of the endoscope 4, the foreign body can enter the second retrieval net 202 through the inlet opening, to achieve the net retrieval of the foreign body.

[0075] Embodiment three:

[0076] Referring to Figures 5-7The difference from the above embodiment is that the retrieval net at the retrieval section 2 has two layers: an inner retrieval net 204 and an outer retrieval net 203. The outer retrieval net 203 is stably connected to the delivery conduit 1; the inner retrieval net 204, with one end extending into the trachea away from the delivery conduit 1, is rotatably connected to the delivery conduit 1, and the other end is stably connected to the head end of the delivery conduit 1. The outer retrieval net 203 has an opening, and the inner retrieval net 204 also has an opening, with the opening on the outer retrieval net 203 matching the opening on the inner retrieval net 204. To facilitate the use of the inner retrieval net 204 and the outer retrieval net 203, the device proposed in this embodiment further includes:

[0077] A rotating block 5 is stably connected to one end of the inner retrieval net 204, and the rotating block 5 is rotatably connected to the conveying conduit 1; a limiting block 501 is stably connected to the rotating block 5; a limiting groove is formed in the conveying conduit 1, the limiting groove is adapted to the limiting block 501, the limiting groove is used to limit the rotation trajectory of the limiting block 501, and the limiting groove and the limiting block 501 work together to limit the rotation angle of the inner retrieval net 204.

[0078] The outer retrieval net 203 is stably connected to the conveying conduit 1, and the inner retrieval net 204 is partially rotatably connected to the conveying conduit 1. Both have openings and are compatible. The inner retrieval net 204 is rotated by the rotating block 5 inside the conveying conduit 1, which can make the two openings overlap or separate, so as to capture and lock foreign objects. The limiting block 501 and the limiting groove precisely limit the rotation angle of the inner retrieval net 204 to ensure the accuracy and stability of the operation, and can effectively capture foreign objects with special shapes or positions.

[0079] In this embodiment, the external retrieval net 203 and the internal retrieval 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) material, to ensure that they can still return to their original design shape after long-term use and multiple expansion, contraction and rotation operations. The opening positions on the external retrieval net 203 and the internal retrieval net 204 should be optimized according to the structure of the delivery catheter and the possible location of foreign objects. The opening size can be determined according to the size range of common foreign objects. The rotating block 5 can be made of medical ceramic or metal materials with high hardness, such as zirconia ceramic or titanium alloy. Its connection with the internal retrieval net 204 can be achieved by welding or high-strength mechanical connection. Its material can be the same as or compatible with the delivery catheter 1 and is a high-strength material.

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

[0081] During use, the delivery tube 1 is first inserted, then the pull wire 3 controls the expansion of the retrieval section 2. Next, the rotating block 5 rotates the inner retrieval mesh 204, causing the openings of the outer retrieval mesh 203 and the inner retrieval mesh 204 to overlap, facilitating the entry of foreign objects. Afterward, rotation stops, and the outer and inner retrieval meshes 203 and 204 rotate back to their original positions, alternating the mesh lines of the outer and inner meshes (for example, the mesh openings of the outer mesh 203 correspond to the mesh lines of the inner mesh 204, and vice versa), thus blocking the opening. During rotation, the limiting block 501 and the limiting groove cooperate to ensure the accurate rotation angle of the inner retrieval mesh 204, ensuring stable and effective operation. Rotation is then stopped to prevent the foreign object from escaping. During the above process, the endoscope 4 is used to observe the internal condition to assist in accurate operation.

[0082] Example 4:

[0083] See Figures 8-12 This application also discloses an airway foreign body removal device, which includes the airway foreign body removal apparatus described in any of the above embodiments, and further includes an artificial airway component 6, which is used in conjunction with the airway foreign body removal apparatus described in any of the above embodiments. The artificial airway component 6 is sleeved around the delivery tube 1 and is slidably connected to the delivery tube 1, providing a ready-made artificial airway for the airway foreign body removal device to enter the patient's trachea. This facilitates the entry of the airway foreign body removal device into the airway while maintaining the patency and stability of the patient's airway, thus enabling the removal of the foreign body. This allows the use of an existing artificial airway tool, through which the airway foreign body removal device can be inserted, reducing the patient's pain from repeated direct intubation.

[0084] In this embodiment, the artificial airway component 6 is made of a soft, comfortable, and biocompatible material, such as medical-grade silicone rubber. Its surface in contact with the patient is smooth and burr-free to avoid irritating the airway mucosa. The size of the artificial airway component 6 can be designed according to patients of different ages and body types, including various sizes such as pediatric and adult models.

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

[0086] Example 5:

[0087] In this embodiment, as Figure 8As shown, the artificial airway component 6 is a tracheal tube. The airway foreign body removal device from embodiments one to three and their related preferred embodiments is inserted into the tracheal tube, together forming the airway foreign body removal device of this embodiment, as detailed below. Figure 8 As shown.

[0088] In clinical practice, some patients require an artificial airway established through endotracheal intubation. One end of the endotracheal tube is inserted into the patient's trachea, and the other end is connected to a ventilator or anesthesia machine. When it is necessary to remove a foreign body, an airway foreign body removal device is inserted into the patient's trachea through the endotracheal tube to remove the foreign body.

[0089] Example 6:

[0090] In this embodiment, as Figure 9 As shown, the artificial airway component 6 is a laryngeal mask airway. The airway foreign body removal device from embodiments one to three and their related preferred embodiments is inserted into the laryngeal mask airway, together forming the airway foreign body removal device of this embodiment, as detailed below. Figure 9 As shown.

[0091] In clinical practice, some patients require a laryngeal mask airway to establish an artificial airway. One end of the laryngeal mask is placed against the patient's glottis, and the other end is connected to a ventilator or anesthesia machine. When it is necessary to remove a foreign object, the airway foreign body removal device is inserted through the laryngeal mask into the patient's trachea to remove the foreign object.

[0092] Example 7:

[0093] In this embodiment, as Figure 10 As shown, the artificial airway component 6 is an oropharyngeal airway. The airway foreign body removal device from Embodiments 1 to 3 and their related preferred embodiments is inserted into the oropharyngeal airway, together forming the airway foreign body removal device of this embodiment, as detailed below. Figure 10 As shown.

[0094] In clinical practice, some patients require an artificial airway established through an oropharyngeal airway. One end of this airway is inserted into the patient's trachea, and the other end is located at the glottis. When removing a foreign body in this case, an airway foreign body removal device is inserted through the oropharyngeal airway and into the patient's trachea to remove the foreign body.

[0095] In addition, artificial airway component 6 can also be other related tools, equipment or structures for establishing an artificial airway for patients, such as a nasopharyngeal airway, which will not be elaborated here.

[0096] It should be noted that in practical applications, the choice of artificial airway component 6—whether it be an endotracheal tube, laryngeal mask airway, oropharyngeal airway, or nasopharyngeal airway—must be based on the patient's specific condition. Furthermore, the size of artificial airway component 6 should be designed in various specifications to accommodate patients of different ages and body types. Its material should be soft, comfortable, and biocompatible, such as medical-grade silicone or polyurethane. During selection, a comprehensive assessment should be conducted based on factors such as the size of the patient's nasal or oral cavity, ventilation function, and the presence of anatomical abnormalities. For example, for a nasopharyngeal airway, its length and diameter should match the patient's nasal anatomy to ensure smooth insertion without damaging the nasal mucosa; for an oropharyngeal airway, its shape and size should be suitable for the oral cavity structure to effectively maintain airway patency while avoiding compression of oral tissues.

[0097] Example 8:

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

[0099] An auxiliary block 7 is disposed within the artificial airway component 6; an annular slider 8 is slidably connected to an elongated through-slot 701 formed inside the auxiliary block 7, the elongated through-slot 701 defining the radial movement trajectory of the annular slider 8 within the artificial airway component 6. The annular slider 8 is slidably connected to the delivery conduit 1, and the annular slider 8 drives the delivery conduit 1 to move axially along the artificial airway component 6.

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

[0101] The auxiliary block 7 can be made of medical plastic material that is the same as or similar to that of the artificial airway component 6. Its internal structure should be designed to accommodate the annular slider 8 and ensure that the annular slider 8 slides smoothly. For example, it can be a circular, rounded rectangular or elliptical inner cavity. The annular slider 8 can be made of medical polymer material with a low coefficient of friction, such as polytetrafluoroethylene (PTFE) or ultra-high molecular weight polyethylene (UHMWPE). The fit clearance between its outer diameter and the inner cavity of the auxiliary block 7 should be controlled between 0.1-0.3 mm to ensure smooth sliding and no obvious shaking. The connection between the annular slider 8 and the delivery catheter 1 should ensure that the relative sliding between the two is flexible and that there is no loosening or separation. This can be achieved through special slots or clamping structures.

[0102] Example 9:

[0103] To further ensure smoother and more precise control when the annular slider 8 drives the delivery tube 1 to slide radially along the artificial airway component 6, a more preferred embodiment is that the airway foreign body removal device in any of the embodiments four to eight further includes: a thread 9. Several threads 9 are present, with one end stably connected to the annular slider 8, and the other end extending through a through-hole axially formed inside the artificial airway component 6 to the outer end of the artificial airway component 6 (i.e., the end furthest from the artificial airway component 6 and closer to the patient's trachea), and connected to a pull ring 10. Figures 11-12 As shown, the wire 9 is used to control the sliding of the annular slider 8 in the elongated through groove 701. In the artificial airway component 6, the transition section from radial to axial is used to smoothly set the through hole, or a small steering wheel is added to smoothly transition the pulling force of the pull ring 10.

[0104] The elongated groove 701 defines the movement trajectory 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 thread 9 is connected to the annular slider 8, and the other end passes through the artificial airway component 6 and is connected to a pull ring. Medical personnel control the tension of the thread 9 by pulling the pull ring 10, which drives the annular slider 8 to slide within the elongated groove 701, thereby achieving precise adjustment of the position of the delivery catheter 1.

[0105] The width of the elongated groove 701 should be designed according to the size and motion accuracy requirements of the annular slider 8 to ensure that the annular slider 8 slides smoothly in the groove without getting stuck. The length of the elongated groove 701 should be determined according to the expected range of movement of the delivery tube 1 in the artificial airway component 6 to ensure that the position adjustment of the delivery tube 1 can be met during the retrieval operation. The thread 9 should be made of high-strength, low-elasticity medical materials, such as medical polyester fiber, and should be able to ensure 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 as circular or elliptical.

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

[0107] In use, the artificial airway component 6 is first fitted around the delivery tube 1, slidingly connected to it to provide external support and guidance, maintaining airway patency and stability, reducing displacement and swaying, protecting surrounding tracheal tissues, and minimizing external interference. When the position of the delivery tube 1 needs adjustment, pulling the pull ring 10 moves the thread 9 connected to the annular slider 8 inside the artificial airway component 6, controlling the tension of the thread 9, which in turn moves the annular slider 8, thus achieving smooth movement of the delivery tube 1 within the artificial airway component 6 and precise adjustment of its position. The artificial airway component 6 can be selected based on the patient's age, airway anatomy, condition, etc., including endotracheal tubes, laryngeal masks, oropharyngeal airways, nasopharyngeal airways, etc., increasing the flexibility and applicability of the equipment, ensuring airway patency, and facilitating smooth foreign body removal.

[0108] The figures shown in the accompanying drawings are illustrative and are intended only to more intuitively demonstrate the key structure and connection relationships of the airway foreign body removal device of this utility model; in practical applications, the appearance and size of the device can be adjusted and optimized according to specific needs.

[0109] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details have been described in detail in the above preferred embodiments; however, those skilled in the art can fully understand this utility model even without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0110] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A foreign body removal device for the airway, comprising a delivery conduit (1) and a retrieval part (2), characterized in that: The object retrieval part (2) is located on the delivery conduit (1) and close to the end of the delivery conduit (1) that extends into the trachea; the object retrieval part (2) is provided with an object retrieval net, which can expand to open the mesh to retrieve foreign objects and can retract the mesh to lock the foreign objects.

2. The airway foreign body removal device according to claim 1, characterized in that: The retrieval net can be 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 retrieval net is a single-layer retrieval net, it includes: The single-layer retrieval net is a first retrieval net (201). The mesh size of the first retrieval net (201) is smaller at the end near the delivery conduit (1) that extends into the trachea, and larger at the end away from the delivery conduit (1) that extends into the trachea. The end of the first retrieval net (201) with larger mesh size is used to allow foreign objects to enter the first retrieval net (201) after expansion; or The single-layer retrieval net is the second retrieval net (202), and the second retrieval net (202) has an inlet at the end near the delivery conduit (1) that extends into the trachea.

4. The airway foreign body removal device according to claim 2, characterized in that: The object retrieval net is a double-layer object retrieval net, which includes an outer object retrieval net (203) and an inner object retrieval net (204); The external retrieval net (203) is fixedly connected to the delivery conduit (1), and the external retrieval net (203) has an opening; the inner retrieval net (204) extends into the trachea away from the delivery conduit (1) at one end and is rotatably connected to the delivery conduit (1), and the other end is fixedly connected to the head end of the delivery conduit (1), the inner retrieval net (204) has an opening, and the opening on the external retrieval net (203) is adapted to the opening on the inner retrieval net (204); The device also includes a rotating block (5), which is fixedly connected to one end of the inner retrieval net (204), and the rotating block (5) is rotatably connected to the delivery conduit (1); A limiting block (501) is fixedly connected to a rotating block (5); a limiting groove is formed inside a conveying conduit (1); the limiting groove is adapted to the limiting block (501), and the limiting groove is used to limit the rotation trajectory of the limiting block (501).

5. The airway foreign body removal device according to any one of claims 1-4, characterized in that, The airway foreign body removal device also includes: The drawing wire (3) is placed inside the delivery conduit (1) to control the expansion of the picking part (2).

6. The airway foreign body removal device according to claim 5, characterized in that, The airway foreign body removal device also includes: An endoscope (4) is positioned at the end of the retrieval section (2) that extends into the trachea away from the delivery tube (1).

7. A foreign body removal device for the airway, comprising the foreign body removal apparatus according to any one of claims 1-6, characterized in that, The device also includes: An artificial airway component (6) is fitted around the delivery conduit (1), and the artificial airway component (6) is slidably connected to the delivery conduit (1).

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

9. The airway foreign body removal device according to claim 8, characterized in that, Also includes: Several threads (9) are provided, one end of which is stably connected to an annular slider (8), and the other end passes through the artificial airway component (6) and is 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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