Temporary support for airway and use method
Through the design of the L-shaped support tube and expansion assembly, the temporary supporter of the airway gradually expands under the action of oxygen, solving the problem of supporter displacement, providing stable support, reducing damage, adapting to airway changes, and simplifying operation.
Patent Information
- Application Number
- CN202510411441.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2025-08-01
AI Technical Summary
Existing airway supporters are prone to displacement or fall off during movement of patients, resulting in adverse effects and lack of regulatory functions.
A temporary supporter for airways is designed, using an L-shaped support tube and expansion assembly. Through the polyurethane foam layer and expansion ball expanded with oxygen, it gradually expands to fit the airway tightly and provide stable support.
No external energy required, simplifies operation, reduces damage to the airway wall, improves safety and stability, adapts to different airway sizes and shapes, and is easy to remove.
Smart Images
Figure CN120392371A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the field of medical devices, and specifically relates to a temporary airway support device and its usage method. Background Art
[0002] As a key medical device for treating airway stenosis or collapse, the tracheal support device works by implanting a support with certain tension and elasticity into the diseased part of the airway to expand the narrowed or collapsed airway, thereby maintaining airway patency or blocking a ruptured fistula. According to the anatomical characteristics and lesion conditions of different parts of the trachea and bronchi, a support device of the corresponding size is selected. Under the guidance of a bronchoscope, a suitable support device is implanted at the lesion site and appropriately adjusted according to the contractility, irregularity, and stenosis degree of the airway.
[0003] The existing airway support devices are usually fixed devices without an adjustment function. Although such support devices can effectively expand the airway and restore airway patency, thereby improving the patient's breathing function. However, in daily life, with the patient's various movements, such as breathing, swallowing, speaking, and other activities, the support device may shift, causing adverse effects.
[0004] In summary, how to solve the problem that the fixed support device may shift with the patient's movement has become an urgent problem to be solved. Therefore, it is necessary to propose a temporary airway support device and its usage method. Summary of the Invention
[0005] To solve the above problems, the purpose of the present invention is to provide a temporary airway support device and its usage method. Through the outward expansion of the support component, it can be closely attached to the airway, thereby forming a stable support to prevent displacement or detachment caused by external forces, thus improving the safety and stability of the device.
[0006] To achieve the above purpose, the technical solution of the present invention is as follows: A temporary airway support device includes an L-shaped support tube, and an opening is formed along the length direction of the vertical end of the support tube; an expansion component for increasing the diameter of the support tube is arranged inside the side wall of the support tube.
[0007] The expansion component includes a first expansion layer that expands upon contact with oxygen and a plurality of second expansion layers. The first expansion layer and the plurality of second expansion layers form the support tube; a plurality of sliding grooves are formed inside the first expansion layer and the plurality of second expansion layers, and blocking blocks are slidably fitted inside the sliding grooves. The sliding grooves on the first expansion layer are all communicated with the inside of the support tube; a plurality of storage holes are formed on each of the second expansion layers; the blocking blocks on the first expansion layer are all fixedly connected with pull wires; adjacent first expansion layer and second expansion layer are communicated with each other through the sliding grooves; a support component for providing support to the support tube is arranged outside the support tube.
[0008] The following principles and beneficial effects are achieved by adopting the above scheme:
[0009] Basic principle: By placing the support device in a narrow airway, since a number of sliding grooves are provided in the first expansion layer, and blocking blocks are slidably fitted in the sliding grooves, the blocking blocks can be pulled into the storage holes of the second expansion layer by pulling the guy wires fixedly connected to the blocking blocks. At this time, the first expansion layer will contact oxygen through the sliding grooves, and when the oxygen contacts the first expansion layer, a reaction will occur and it will expand. When the first expansion layer gradually expands, it will gradually push the blocking blocks of the second expansion layer into the storage holes of the adjacent second expansion layer, so that the second expansion layer is communicated with the structural pores of the first expansion layer through the sliding grooves. When communicated, the second expansion layer will contact oxygen and expand outwards; and so on to realize the gradual expansion of the support tube in the narrow airway. In this process, the support components outside the support tube also gradually expand outwards, thereby providing corresponding support for the support tube in the narrow airway; and shaping the narrow airway, and taking out the support device after the shaping is completed. [[ID= five]]
[0010] Beneficial effects: 1. The present invention can automatically expand without external energy or complex equipment, simplifies the operation process, and reduces the workload of doctors. At the same time, it has a lower cost and provides better treatment effects. The mechanism of layer-by-layer expansion can effectively avoid excessive expansion at one time, thereby reducing damage to the airway wall and improving the safety of treatment.
[0011] 2. The design of the L-shaped support tube in the present invention can better adapt to the structures of the human trachea and main bronchi, expand the narrow airway, ensure air circulation, and relieve the dyspnea of patients. By controlling the expansion degree of the support tube, it can adapt to the sizes and shapes of the airways of different patients and provide personalized support effects.
[0012] 3. As a temporary solution, this support device can be removed after completing its mission, avoiding the long-term complications that may be brought by permanent implants. The expansion of the support components helps to shape the airway. After the airway returns to normal, the support device can be easily taken out, increasing the convenience of the device.
[0013] 4. The design of the opening of the L-shaped support tube divides it into a fixed branch and a self-variable branch. The fixed branch is located at the transverse end of the support tube, and the self-variable branch is located at the vertical end of the support tube. The self-variable branch can be adjusted according to the size of the airway to reduce the shear force and angle of the support tube; it can change its direction and size with the changes of bronchial lesions, avoiding the formation of an angle between the support tube and the airway wall after being installed, thereby reducing the granulation tissue formed by its friction with the airway wall.
[0014] Furthermore, the support components include a number of expansion balls that expand when encountering oxygen. The expansion balls are fixedly connected to the outer side wall of the support tube, and channels communicating the expansion balls with the storage holes are provided in the second expansion layer; the sizes of adjacent expansion balls are all different.
[0015] Beneficial effects: When the support tube expands outwards, since channels connecting the expansion balls and the storage holes are provided in the second expansion layer, the oxygen inside the support tube will be transmitted to the expansion balls on the outside through the storage holes and the structural pores of the second expansion layer. When the expansion balls come into contact with oxygen, an expansion reaction will occur, causing the expansion balls to expand outwards and come into close contact with the airway to form a support. Since the adjacent expansion balls are of different sizes, during the expansion process of the support tube, it will gradually expand outwards. Therefore, at this time, the smaller expansion balls can fill the gaps after the support tube expands. This expansion reaction enables the expansion balls to adapt to the shape and size of the airway and form a tight fit. This tightly fitting structure enables the support tube to form a stable support in the airway, effectively preventing the support tube from shifting or falling off due to external forces, thereby improving the safety and stability of the device.
[0016] Furthermore, the materials for making the first expansion layer, the second expansion layer and the expansion balls are all selected as polyurethane foam.
[0017] Beneficial effects: Polyurethane foam is composed of specific isocyanates and polyether polyols, and a specific catalyst is added; it will react and expand when it comes into contact with oxygen. When polyurethane foam is used as a medical material, after appropriate modification and treatment, it can exhibit good biocompatibility and has a certain degree of flexibility and elasticity, enabling it to adapt to the dynamic changes of the airway and provide stable support without damaging the surrounding tissues.
[0018] Furthermore, a number of partition plates are fixedly connected inside the side wall of the support tube.
[0019] Beneficial effects: The support tube is divided into multiple regions by a number of fixedly connected partition plates, enabling the support tube to expand from multiple surfaces during expansion, making the expansion more uniform and reducing the damage to the airway wall caused by local overpressure.
[0020] Furthermore, ventilation plates are fixedly connected at the connections between the inside of the support tube and the sliding grooves.
[0021] Beneficial effects: The ventilation plates are used to prevent the support tube from expanding excessively into the inside of the support tube during expansion, thereby blocking the airflow in the internal support tube and ensuring that the patient can breathe normally when using the support tube.
[0022] Furthermore, sealing silica gels are fixedly connected at the positions where the first expansion layer, the second expansion layer and the expansion balls are in contact with the outside; isolation layers are fixedly connected to the inner wall of the first expansion layer, the connection between the first expansion layer and the second expansion layer, and between adjacent second expansion layers.
[0023] Benefits: The polyurethane foam expands when exposed to oxygen. The addition of a sealing silicone and insulating layer prevents the stent from prematurely expanding before reaching the designated area. This prevents the stent from expanding in the wrong position within the airway, reduces accidental damage to the airway wall, and thus improves treatment safety.
[0024] Furthermore, a method for using a temporary airway support device comprises the following steps:
[0025] Step 1, Preliminary Preparation: The patient is examined to determine the installation position, size, and length of the supporter; the supporter, bronchoscope with a biopsy hole, guidewire, and delivery device are prepared; and the patient is anesthetized;
[0026] Step 2: Stent placement: The patient lies supine, and the doctor uses a bronchoscope to enter the airway through the nasal cavity. Under the guidance of the bronchoscope, the guide wire is delivered to the installation site. The delivery device is inserted along the guide wire and marked.
[0027] Step 3: Stent release: Release the stent to the installation position using the conveyor according to the markings on the conveyor. During the release process, the stent completely covers and props up the lesion at the installation position. If the stent is not in the appropriate installation position, adjust it.
[0028] Step 4, postoperative care: observe the patient's vital signs after surgery; give antibiotics, expectorants and antitussive drugs; arrange for the patient to have regular checkups, and remove the support device after the lesion area is reshaped.
[0029] Furthermore, in step one, the examination method is one or more of X-ray, CT scan and bronchoscopy.
[0030] Furthermore, in step 2, a guide wire is placed into the distal bronchus through the biopsy hole of the bronchoscope.
[0031] Furthermore, in step three, after the support device is released to the installation position, the support device is released by pulling the pull wire to gradually expand the diseased area.
[0032] Beneficial Effects: Based on detailed imaging and endoscopic examinations, the selection and placement of the stent can be personalized to ensure optimal treatment outcomes. The gradual release mechanism, controlled by a traction wire, effectively reduces accidental damage to the airway wall during stent release, ensuring treatment safety. If the stent placement is found to be inappropriate during release, adjustments can be made promptly. This flexibility ensures the adaptability and effectiveness of treatment plans, effectively reducing treatment failures or complications caused by improper placement. BRIEF DESCRIPTION OF THE DRAWINGS
[0033] Figure 1 This is an axonometric view of a temporary airway support device according to an embodiment of the present invention.
[0034] Figure 2 This is a front cross-sectional view of the airway temporary support device according to an embodiment of the present invention.
[0035] Figure 3 This is a flowchart of the usage method of the airway temporary support device according to an embodiment of the present invention.
[0036] The reference numerals in the accompanying drawings of the specification include: support tube 1, second expansion layer 2, blocking block 3, storage hole 4, pulling wire 5, expansion ball 6, partition plate 7, ventilation plate 8, first expansion layer 9. Detailed Description of the Invention
[0037] The following is a further detailed description through specific embodiments:
[0038] Embodiment 1:
[0039] Basically as shown in the attached Figure 1 and Figure 2 figures:
[0040] An airway temporary support device includes an L-shaped support tube 1. Through the design of the L-shaped support tube 1, it can better adapt to the structure of the human trachea and main bronchus. An opening is provided along the length direction of the vertical end of the support tube 1; the design of the opening of the L-shaped support tube 1 divides it into a fixed branch and a self-variable branch. The fixed branch is located at the horizontal end of the support tube 1, and the self-variable branch is located at the vertical end of the support tube 1. The self-variable branch can be adjusted according to the size of the airway to reduce the shear force and angulation of the support tube 1; it can change its orientation and size with the changes of bronchial lesions, avoiding the formation of an angle between the support tube 1 and the airway wall after it is inserted, thereby reducing the granulation tissue formed by its friction with the airway wall.
[0041] An expansion component is provided inside the side wall of the support tube 1 for increasing the diameter of the support tube 1. The expansion component can expand the narrowed airway, ensure air circulation, and relieve the dyspnea of the patient.
[0042] The expansion component includes a first expansion layer 9 that expands upon contact with oxygen and a plurality of second expansion layers 2. The materials for making the first expansion layer 9 and the second expansion layers 2 are both selected as polyurethane foam; the first expansion layer 9 and the plurality of second expansion layers 2 form the support tube 1; a plurality of chutes are provided inside both the first expansion layer 9 and the plurality of second expansion layers 2, and blocking blocks 3 are slidably fitted inside the chutes. The chutes on the first expansion layer 9 are all communicated with the inside of the support tube 1; a plurality of storage holes 4 are provided on each of the second expansion layers 2; pulling wires 5 are fixedly bonded to the blocking blocks 3 on the first expansion layer 9; adjacent first expansion layer 9 and second expansion layers 2 are communicated with each other through the chutes; a support component is provided outside the support tube 1 for providing support to the support tube 1.
[0043] The support component includes several expansion balls 6 that expand upon contact with oxygen. The material used for making the expansion balls 6 is polyurethane foam. The expansion balls 6 are fixedly bonded to the outer wall of the support tube 1. Channels through which the expansion balls 6 communicate with the storage holes 4 are provided in the second expansion layer 2. The sizes of adjacent expansion balls 6 are all different.
[0044] The specific implementation process is as follows:
[0045] First, when the patient needs to use it, by placing the support device in the narrow airway, since several sliding grooves are provided in the first expansion layer 9 and blocking blocks 3 are slidably fitted in the sliding grooves, the blocking blocks 3 can be pulled into the storage holes 4 of the second expansion layer 2 by pulling the wire ropes 5 fixedly bonded to the blocking blocks 3. At this time, the first expansion layer 9 will come into contact with oxygen through the sliding grooves, and when the oxygen contacts the first expansion layer 9, a reaction will occur and it will expand. When the first expansion layer 9 gradually expands, it will gradually push the blocking blocks 3 of the second expansion layer 2 into the storage holes 4 of the adjacent second expansion layer 2, so that the second expansion layer 2 is communicated with the structural pores of the first expansion layer 9 through the sliding grooves. When they are communicated, the second expansion layer 2 will come into contact with oxygen and expand outwards; and so on to realize the gradual expansion of the support tube 1 in the narrow airway.
[0046] Take Figure 2 as an example. The diameter of the support tube 1 before expansion is 5.0 mm, and the airway to be shaped needs to be expanded to 10.0 mm. At this time, the support tube 1 with the corresponding number of layers is selected. When the first expansion layer 9 contacts oxygen and expands, causing the support tube 1 to expand to 6.0 mm, the blocking blocks 3 of the second expansion layer 2 will be supported into the corresponding storage holes 4. At this time, the oxygen contacts the second expansion layer 2 and expands, and so on, until when it expands to 10.0 mm, the support tube 1 stops expanding after expanding to the corresponding number of layers.
[0047] During this expansion process, when the support tube 1 expands outwards, since channels through which the expansion balls 6 communicate with the storage holes 4 are provided in the second expansion layer 2, the oxygen inside the support tube 1 will be transmitted to each other through the storage holes 4 and the structural pores of the second expansion layer 2, and thus transmitted to the outer expansion balls 6. When the expansion balls 6 contact oxygen, an expansion reaction will occur, so that the expansion balls 6 expand outwards and are in close contact with the airway to form a support. Since the sizes of adjacent expansion balls 6 are different, during the expansion process of the support tube 1, it will gradually expand outwards. Therefore, at this time, the smaller expansion balls 6 can fill the gaps after the expansion of the support tube 1. This expansion reaction enables the expansion balls 6 to adapt to the shape and size of the airway and form a tight fit. This tightly fitting structure enables the support tube 1 to form a stable support in the airway, and can effectively prevent the support tube 1 from being displaced or falling off due to external forces, thereby improving the safety and stability of the device. During the process of providing support for the airway and shaping the narrow airway, after the shaping is completed, the support device is taken out, which increases the convenience of the device.
[0048] The present invention can automatically expand without external energy or complex equipment, simplifies the operation process, and reduces the workload of doctors. At the same time, it has a lower cost and provides better treatment effects. The mechanism of layer-by-layer expansion can effectively avoid excessive expansion at one time, thereby reducing damage to the airway wall and improving the safety of treatment. By controlling the degree of expansion of the support tube 1, it can adapt to the size and shape of the airways of different patients and provide personalized support effects.
[0049] The polyurethane foam is composed of specific isocyanates and polyether polyols, and a specific catalyst is added; it will react and expand when it comes into contact with oxygen. When used as a medical material, the polyurethane foam can exhibit good biocompatibility after appropriate modification and treatment, and has a certain flexibility and elasticity, can adapt to the dynamic changes of the airway, and provide stable support without damaging the surrounding tissues.
[0050] Example 2:
[0051] Basically as shown in the attached Figure 1 and Figure 2 shown:
[0052] The difference from the above is that a number of partitions 7 are fixedly bonded inside the side wall of the support tube 1.
[0053] Specific implementation process: The support tube 1 is divided into multiple regions by a number of fixedly bonded partitions 7, so that the support tube 1 can expand from multiple surfaces when expanding, making the expansion more uniform and reducing damage to the airway wall caused by local overpressure.
[0054] Example 3:
[0055] Basically as shown in the attached Figure 1 and Figure 2 shown:
[0056] The difference from the above is that ventilation plates 8 are fixedly bonded at the connections between the inside of the support tube 1 and the sliding grooves.
[0057] Specific implementation process: The ventilation plates 8 are used to prevent the support tube 1 from expanding excessively into the inside of the support tube 1 during expansion, which may block the airflow in the internal support tube 1, ensuring that the patient can breathe normally when using the support tube 1.
[0058] Example 4:
[0059] Basically as shown in the attached Figure 1 and Figure 2 shown:
[0060] Differently from the above, at the positions where the first expansion layer 9, the second expansion layer 2 and the expansion balls 6 contact the outside, a sealing silica gel is fixedly bonded; an insulating layer is fixedly bonded to the inner wall of the first expansion layer 9, the connection between the first expansion layer 9 and the second expansion layer 2, and between adjacent second expansion layers 2.
[0061] Specific implementation process: The polyurethane foam is of the type that expands when encountering oxygen. The purpose of adding the sealing silica gel and the insulating layer is to ensure that the support tube 1 does not expand prematurely before reaching the designated area. Prevent the support tube 1 from expanding at the wrong position in the airway and reduce accidental damage to the airway wall, thereby improving the safety of treatment.
[0062] Example 5:
[0063] Basically as shown in the appendix Figure 3 shown:
[0064] Differently from the above, a method for using a temporary airway support device includes the following steps:
[0065] Step 1, preliminary preparation: The patient undergoes an X-ray examination to determine the installation position, size and length of the support device; prepare the support device, a bronchoscope with a biopsy hole, a guide wire and a delivery device; and provide anesthesia for the patient.
[0066] Step 2, stent placement: The patient takes a supine position, and the doctor uses the bronchoscope to enter the airway through the nasal cavity; under the guidance of the bronchoscope, the guide wire is sent to the installation position through the biopsy hole of the bronchoscope; the delivery device is sent along the guide wire and marked.
[0067] Step 3, stent release: According to the mark on the delivery device, the support device is released to the installation position through the delivery device; during the release process, the support device completely covers and expands the diseased part at the installation position through the traction wire 5; if the installation position of the support device is inappropriate, adjustment is carried out.
[0068] Step 4, postoperative treatment: Observe the patient's vital signs after the operation; and give antibiotics, expectorants and antitussive drugs; arrange for the patient to have regular follow-up examinations, and after the shaping of the diseased part is completed, the support device is removed.
[0069] Specific implementation process: Through detailed imaging and endoscopic examinations, the selection and placement position of the support device can be personalized to ensure good treatment effects. The step-by-step release mechanism controlled by the traction wire 5 can effectively reduce accidental damage to the airway wall during the release of the support device and ensure the safety of treatment. During the release process of the support device, if it is found that the installation position is inappropriate, it can be adjusted in time. This flexibility ensures the adaptability and effectiveness of the treatment plan and effectively reduces treatment failures or complications caused by improper installation positions.
[0070] The above are only embodiments of the present invention. Specific structures and common knowledge such as characteristics that are well-known in the art are not described in detail herein. Those of ordinary skill in the art know all the common general technical knowledge in the technical field to which the invention pertains before the filing date or the priority date, are able to learn all the prior art in this field, and have the ability to apply the conventional experimental means before this date. Those of ordinary skill in the art can, under the inspiration given by this application, combine their own abilities to improve and implement this solution. Some typical well-known structures or well-known methods should not become obstacles for those of ordinary skill in the art to implement this application. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can still be made, and these should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope claimed in this application shall be subject to the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to interpret the content of the claims.
Claims
1. An airway temporary support device, comprising a support tube in an L shape, characterized in that: The vertical end of the support tube is provided with an opening along its length direction; an expansion assembly for increasing the diameter of the support tube is arranged inside the side wall of the support tube; The expansion assembly includes a first expansion layer that expands when encountering oxygen and several second expansion layers. The first expansion layer and the several second expansion layers form the support tube; several sliding grooves are opened in both the first expansion layer and the several second expansion layers, and blocking blocks are slidably fitted in the sliding grooves. The sliding grooves on the first expansion layer are all communicated with the inside of the support tube; several storage holes are opened on each of the second expansion layers; the blocking blocks on the first expansion layer are all fixedly connected with pull wires; the adjacent first expansion layer and the second expansion layer are communicated with each other through the sliding grooves; a support assembly for providing support to the support tube is arranged outside the support tube.
2. The airway temporary support device according to claim 1, characterized in that: The support assembly includes several expansion balls that expand when encountering oxygen. The expansion balls are fixedly connected with the outer side wall of the support tube, and channels for communicating the expansion balls with the storage holes are opened in each of the second expansion layers; the sizes of adjacent expansion balls are all different.
3. The airway temporary support device according to claim 2, wherein: The first expansion layer, the second expansion layer and the expansion balls are all made of polyurethane foam.
4. The airway temporary support device according to claim 3, characterized in that: Several partition plates are fixedly connected inside the side wall of the support tube.
5. The airway temporary support device according to claim 4, characterized in that: Ventilation plates are fixedly connected at the positions where the inside of the support tube is communicated with the sliding grooves.
6. The airway temporary support device according to claim 5, characterized in that: Sealing silica gels are fixedly connected at the positions where the first expansion layer, the second expansion layer and the expansion balls are in contact with the outside; isolation layers are fixedly connected between the inner wall of the first expansion layer, the connection between the first expansion layer and the second expansion layer, and between adjacent second expansion layers.
7. A method for using a temporary airway support device, characterized in that: It includes the following steps: Step 1, preliminary preparation: The patient determines the installation position, size and length of the support device through examinations; Prepare the support device, a bronchoscope with a biopsy hole, a guide wire and a delivery device; and provide anesthesia for the patient; Step 2, stent placement: The patient takes a supine position, and the doctor uses the bronchoscope to enter the airway through the nasal cavity; the guide wire is delivered to the installation position under the guidance of the bronchoscope; the delivery device is sent along the guide wire and marked; Step 3, stent release: According to the mark on the delivery device, the support device is released to the installation position through the delivery device; during the release process, the support device completely covers and expands the diseased part at the installation position; if the installation position of the support device is inappropriate, adjustment is carried out; Step 4, postoperative treatment: Observe the patient's vital signs after the operation; and give drugs for antibiotics, expectoration and cough suppression; arrange for the patient to have regular reexaminations, and after the shaping of the diseased part is completed, the support device is taken out.
8. The method for using the temporary airway support device according to claim 7, characterized in that: In Step 1, the examination method is one or more of X-ray, CT scan and bronchoscope.
9. The method for using the temporary airway support device according to claim 8, characterized in that: In Step 2, the guide wire is placed into the distal bronchus through the biopsy hole of the bronchoscope.
10. The method for using the airway temporary support device according to claim 9, characterized in that: In Step 3, after the support device is released to the installation position, the support device is released by pulling the pull wire to gradually expand the diseased part.