Multi-balloon imbedded nasopharynx filling device

Abstract

The invention discloses a multi-balloon imbedded nasopharyngeal tamponade device, which comprises a tamponade body, the tamponade body comprises a flexible outer layer and a support catheter, the support catheter extends along the axial direction, and the flexible outer layer wraps the support catheter; the ends, facing the filling body, of the air bag units extend to form inflation openings, and the multiple air bag units are arranged between the flexible outer layer and the supporting catheter and distributed in the circumferential direction; the air inflation assembly is arranged at one end of the filling body and communicates with the air inflation opening, and the air inflation assembly can be used for independently inflating each air bag unit; a breathing channel is formed in the packing body and penetrates through the flexible outer layer and the supporting catheter. The technical scheme can adapt to the irregular nasopharyngeal cavity form, multi-point independent pressure regulation and control are provided to achieve uniform compression hemostasis, and meanwhile smooth ventilation of the nasal cavity is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a multi-balloon nasopharyngeal packing device. Background Technology

[0002] Nasopharyngeal hemorrhage is a common emergency in otolaryngology, and rapid, effective, and safe nasopharyngeal packing is a crucial aspect of treatment. Currently, widely used nasopharyngeal packing devices include Vaseline gauze, expandable sponges, and single or double balloon packers. However, these devices have significant limitations in practical application, making it difficult to simultaneously meet the multiple needs of precise hemostasis, patient comfort, and maintaining basic ventilation.

[0003] Traditional Vaseline gauze packing requires medical staff to manually insert it layer by layer into the nasopharynx. This procedure is cumbersome and time-consuming. Uneven packing pressure can easily lead to excessive local pressure, causing severe pain, secondary damage to the nasal mucosa, and even hemostasis failure or recurrence of bleeding due to inadequate packing. Furthermore, gauze packing completely obstructs the nasal airway, forcing patients to rely on mouth breathing for extended periods, which can easily induce complications such as dry mouth, sore throat, and breathing discomfort, significantly reducing the patient's experience and treatment adherence.

[0004] Existing balloon tamponade devices, such as single-balloon or double-balloon tamponade systems, while partially addressing the issue of ease of operation, still suffer from the common problem of insufficient ventilation. These devices often employ a single or double-balloon structure with a fixed balloon shape, making them unsuitable for the diverse individual differences and irregular anatomical features of the nasopharynx, such as variations in bony structures and mucosal folds. This results in insufficient adhesion between the balloon and the nasal cavity wall, easily creating compression blind spots and hindering uniform pressure for hemostasis. Furthermore, once inflated, the balloons in these devices typically completely seal the nasal passage, leaving the patient's breathing still obstructed. Additionally, while some devices possess balloon pressure regulation capabilities, they lack the ability to independently and precisely control the pressure of each balloon, failing to adjust the pressure intensity for specific bleeding sites. This leads to the defects of excessive local pressure causing tissue ischemia and necrosis, or insufficient pressure resulting in incomplete hemostasis. Inflatable sponges and other materials also present similar problems; they obstruct the airway after inflation, and may cause secondary damage due to adhesions during removal. Summary of the Invention

[0005] The main objective of this invention is to provide a multi-balloon nasopharyngeal packing device that is designed to adapt to irregular nasopharyngeal morphology, provide multi-point independent pressure control to achieve uniform compression hemostasis, and at the same time ensure unobstructed nasal ventilation.

[0006] To achieve the above objectives, the present invention proposes a multi-balloon nasopharyngeal packing device, which includes: A plug body, the plug body comprising a flexible outer layer and a supporting conduit, the supporting conduit extending axially, the flexible outer layer being wrapped around the outside of the supporting conduit; An airbag unit, wherein the airbag unit extends toward one end of the packing body and has an inflation port, and a plurality of the airbag units are disposed between the flexible outer layer and the support conduit and are distributed circumferentially; An inflation assembly is disposed at one end of the filling body and communicates with the inflation port, the inflation assembly being capable of independently inflating each of the airbag units; The packing body is provided with a breathing channel, which extends through the flexible outer layer and the supporting conduit.

[0007] In some embodiments of the present invention, the inflation assembly includes a rotating inflation component and an indexing positioning mechanism; The rotating inflatable component includes an inflation tube and a rotating inflation ring. The rotating inflation ring has a hollow inflation cavity. One end of the inflation tube is connected to an external air source, and the other end is connected to the inflation cavity. The rotating inflatable ring is movably sleeved on the support tube and can rotate relative to the support tube; The rotating inflation ring has a through hole on the side facing the inflation port for docking with the inflation port; The indexing and positioning mechanism is disposed between the rotating inflation ring and the supporting guide tube, and is used to align the through hole with the inflation port of each of the airbag units one by one.

[0008] In some embodiments of the present invention, the indexing and positioning mechanism includes a positioning post and an elastic positioning element; Multiple positioning posts are fixedly arranged circumferentially on the front of the rotating inflation ring, and correspond one-to-one with the inflation ports of the multiple airbag units with the same circumferential spacing. The elastic positioning element is fixedly mounted on the support guide tube. The elastic positioning element includes a movable block and a compression spring. The top of the movable block is provided with a semi-circular groove. The movable block elastically abuts against the positioning post via the compression spring; The through hole corresponds axially to the position of one of the positioning pins; As the rotating air ring rotates, the positioning pins sequentially compress the elastic positioning elements.

[0009] In some embodiments of the present invention, the multi-balloon nasopharyngeal packing device further includes an elastic sealing assembly, which includes a retaining ring and a self-tightening seal. The fixing ring is fixedly sleeved on the support guide tube and is located behind the rotating inflation ring; The self-tightening seal is disposed between the fixed ring and the rotating air ring, with the rear end of the self-tightening seal abutting against the fixed ring and the front end of the self-tightening seal elastically pressing against the rear side of the rotating air ring.

[0010] In some embodiments of the present invention, the self-tightening seal includes a movable sleeve, an elastic element, and a fixed sleeve; The fixing sleeve is fixedly fitted onto the supporting guide tube and is located behind the fixing ring; The movable sleeve is movably sleeved on the support guide tube, and the front end of the movable sleeve abuts against the rear side of the rotating inflation ring. The elastic element is a compression spring, which is sleeved on the support guide tube. One end of the compression spring abuts against the fixed sleeve, and the other end of the compression spring abuts against the movable sleeve.

[0011] In some embodiments of the present invention, the self-tightening seal is further provided with an axial guide structure; The axial guide structure includes a slide bar disposed on the fixed sleeve and a limiting groove disposed on the movable sleeve; The slide bar extends axially, the limiting groove is formed axially, and the slide bar slides in conjunction with the limiting groove.

[0012] In some embodiments of the present invention, the multi-balloon nasopharyngeal packing device further includes an inflation positioning ring, which is fixedly sleeved on the support catheter and located in front of the rotating inflation ring. The inflatable positioning ring has multiple openings, each opening corresponding to an inflation port of the airbag unit, and the inflation port passes through the opening and faces the rotating inflatable ring. The rotating inflation ring abuts axially against the inflation positioning ring.

[0013] In some embodiments of the present invention, a ventilation duct is fixedly installed in the breathing channel; the ventilation duct passes through the supporting duct axially. The flexible outer layer has two outer layer through grooves, and the support conduit has two corresponding inner core through holes. One end of the ventilation conduit is connected to the outer layer through groove, and the other end is connected to the inner core through hole.

[0014] In some embodiments of the present invention, the airbag unit includes an airbag body and a flexible air tube communicating with the airbag body; The airbag is fixed to the inner surface of the flexible outer layer; one end of the flexible air tube is connected to the airbag, and the other end extends through the support conduit to the inflation assembly.

[0015] In some embodiments of the present invention, a contact pad is also fixedly installed at the rear end of the filler.

[0016] The present invention relates to a device that, when inserted into the nasopharynx, consists of a flexible outer layer that wraps around a supporting catheter, with multiple balloon units distributed circumferentially between them. An inflation assembly is located at one end of the packing and communicates with the independent inflation port of each balloon unit. A breathing channel extends throughout the entire packing. Through the deformable nature of the flexible outer layer, the device can initially adapt to the shape of the nasal cavity; the breathing channel maintains nasal ventilation, preventing complete obstruction of breathing. The inflation assembly can independently inflate each balloon unit, allowing for selective adjustment of the inflation degree of each balloon postoperatively based on bleeding conditions or anatomical differences at different sites. This achieves precise and uniform compression hemostasis, avoiding the defects of excessive local pressure or inadequate packing in traditional packing methods. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the multi-balloon nasopharyngeal packing device of the present invention; Figure 2 This is a partial structural schematic diagram of the multi-balloon nasopharyngeal packing device of the present invention; Figure 3 This is a cross-sectional schematic diagram of the packing body of the present invention; Figure 4 This is a schematic diagram of the structure of the elastic sealing assembly of the present invention; Figure 5 This is a partial structural schematic diagram of the elastic sealing assembly of the present invention; Figure 6 This is a schematic diagram of the structure of the rotating inflator of the present invention; Figure 7 This is a schematic diagram of the structure of the elastic positioning element of the present invention; Figure 8 This is a schematic diagram of the airbag unit of the present invention.

[0019] Explanation of icon numbers: 100. Packing material; 110. Flexible outer layer; 120. Support tube; 200. Airbag unit; 210. Airbag body; 220. Flexible air tube; 300. Inflation assembly; 310. Rotary inflator; 311. Inflation tube; 312. Rotary inflator ring; 312A. Through hole; 320. Indexing and positioning mechanism; 321. Positioning post; 322. Elastic positioning element; 322A. Movable block; 322B. Compression spring; 400. Breathing channel; 410. Ventilation tube; 500. Elastic sealing assembly; 510. Fixing ring; 520. Self-tightening seal; 521. Movable sleeve; 522. Elastic element; 523. Fixing sleeve; 530. Slider; 540. Guide groove; 600. Inflation positioning ring; 700. Contact pad; The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0022] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, the user should consider such a combination of technical solutions to be non-existent and not within the scope of protection claimed by this invention.

[0023] See appendix Figure 1-8 This invention proposes a multi-balloon nasopharyngeal packing device, which includes: The packing body 100 includes a flexible outer layer 110 and a support conduit 120, the support conduit 120 extending axially, and the flexible outer layer 110 wrapping around the outside of the support conduit 120. The airbag unit 200 has an inflation port extending toward one end of the packing body 100. Multiple airbag units 200 are disposed between the flexible outer layer 110 and the support tube 120 and are distributed circumferentially. An inflation assembly 300 is disposed at one end of the filling body 100 and connected to the inflation port. The inflation assembly 300 is capable of independently inflating each airbag unit 200. The tampon 100 is provided with a breathing channel 400, which penetrates the flexible outer layer 110 and the support tube 120.

[0024] Based on the aforementioned technical features, when this device is inserted into the nasopharynx, the flexible outer layer 110 wraps around the support catheter 120, with multiple balloon units 200 distributed circumferentially between them. An inflation assembly 300 is located at one end of the packing body 100 and communicates with the independent inflation port of each balloon unit 200. A breathing channel 400 extends through the entire packing body 100. Through the deformable nature of the flexible outer layer 110, the device can initially adapt to the nasal cavity shape; the breathing channel 400 maintains nasal ventilation for the patient, avoiding complete nasal obstruction. The inflation assembly 300 can independently inflate each balloon unit 200, allowing for selective adjustment of the inflation degree of each balloon postoperatively based on bleeding conditions or anatomical differences at different sites. This achieves precise and uniform compression hemostasis, avoiding the defects of excessive local pressure or inadequate packing in traditional packing methods.

[0025] Furthermore, the inflation assembly 300 includes a rotating inflation component 310 and an indexing and positioning mechanism 320; the rotating inflation component 310 includes an inflation tube 311 and a rotating inflation ring 312, the rotating inflation ring 312 having a hollow inflation cavity, one end of the inflation tube 311 being connected to an external air source, and the other end communicating with the inflation cavity; the rotating inflation ring 312 is movably sleeved on the support guide tube 120 and can rotate relative to the support guide tube 120; the rotating inflation ring 312 has a through hole 312A on the side facing the inflation port for docking with the inflation port; the indexing and positioning mechanism 320 is disposed between the rotating inflation ring 312 and the support guide tube 120, for positioning and aligning the through hole 312A with the inflation ports of each airbag unit 200 one by one.

[0026] The inflation assembly 300 consists of a rotating inflation ring 312 and an indexing and positioning mechanism 320. The rotating inflation ring 312 is movably sleeved on the support conduit 120, and its hollow interior forms an inflation chamber. An external air source supplies air to the inflation chamber through an inflation tube 311. The rotating inflation ring 312 has a through hole 312A on the side facing the inflation port of the balloon unit 200. The indexing and positioning mechanism 320 is located between the rotating inflation ring 312 and the support conduit 120, and can guide the rotating inflation ring 312 to rotate sequentially, so that the through hole 312A is aligned with the inflation port of different balloon units 200 in turn. Through the circumferential rotation of the rotating inflation ring 312 and the sequential alignment of the indexing and positioning mechanism 320, the doctor only needs one inflation ring to achieve sequential and independent inflation of multiple balloon units 200. This "single-ring multi-control" structure greatly simplifies the operation complexity of the device and avoids the bulkiness and operational confusion caused by setting up a separate inflation tube 311 for each balloon. Meanwhile, the one-to-one connection between the through hole 312A and the inflation port ensures that there is no gas leakage and no pressure loss during the inflation process.

[0027] The indexing and positioning mechanism 320 includes positioning posts 321 and elastic positioning elements 322. Multiple positioning posts 321 are circumferentially fixed on the front side of the rotating inflation ring 312, and correspond one-to-one with the inflation ports of multiple airbag units 200 at equal circumferential intervals. The elastic positioning element 322 is fixedly mounted on the support guide tube 120. The elastic positioning element 322 includes a movable block 322A and a compression spring 322B. The top of the movable block 322A has a semi-circular groove. The movable block 322A elastically abuts against the positioning posts 321 through the compression spring 322B. The through hole 312A corresponds axially to the position of one of the positioning posts 321. When the rotating inflation ring 312 rotates, the positioning posts 321 sequentially press against the elastic positioning elements 322.

[0028] The indexing and positioning mechanism 320 includes multiple positioning posts 321 and an elastic positioning element 322. The positioning posts 321 are circumferentially fixed to the front of the rotating inflation ring 312, with their circumferential intervals corresponding one-to-one with the inflation ports of the airbag units 200. The elastic positioning element 322 is fixed to the support guide tube 120 and consists of a movable block 322A and a compression spring 322B. The movable block 322A has a semi-circular groove at its top. The through hole 312A corresponds axially to one of the positioning posts 321. When the rotating inflation ring 312 rotates, the positioning posts 321 sequentially press the movable block 322A downwards, and the compression spring 322B stores force; when the positioning post 321 slides into the semi-circular groove, the compression spring 322B rebounds, producing a "click" tactile feedback. This indexing and positioning mechanism 320 provides the operator with clear tactile and auditory feedback; each "click" indicates that the through hole 312A has been aligned with the inflation port of the next airbag unit 200. This positioning feedback allows for blind operation without visual inspection, making it particularly suitable for scenarios with limited visibility deep within the nasopharynx. Simultaneously, consistent circumferential spacing ensures precise angle adjustments for each rotation, preventing inflation failure or gas leakage due to alignment deviations.

[0029] Specifically, the multi-balloon nasopharyngeal packing device also includes an elastic sealing assembly 500, which includes a retaining ring 510 and a self-tightening seal 520. The retaining ring 510 is fixedly sleeved on the support catheter 120 and located behind the rotating inflation ring 312. The self-tightening seal 520 is disposed between the retaining ring 510 and the rotating inflation ring 312. The rear end of the self-tightening seal 520 abuts against the retaining ring 510, and the front end of the self-tightening seal 520 elastically presses against the rear side of the rotating inflation ring 312.

[0030] The elastic sealing assembly 500 includes a retaining ring 510 and a self-tightening seal 520. The retaining ring 510 is fixedly sleeved on the support conduit 120 and located behind the rotating inflation ring 312. The self-tightening seal 520 is disposed between the retaining ring 510 and the rotating inflation ring 312, with its rear end abutting against the retaining ring 510 and its front end elastically pressing against the rear side of the rotating inflation ring 312. The self-tightening seal 520 uses its own elasticity to press the rotating inflation ring 312 forward (towards the inflation port), ensuring that the front side of the rotating inflation ring 312 always maintains tight contact with the inflation port of the cuff unit 200. Even if the device is subjected to slight vibration or patient head movement during use, this elastic compression can automatically compensate for gaps, prevent air leakage at the inflation port, and ensure the stability of the set pressure of each cuff. In addition, this structure provides pre-tightening force when the device is not inflated, avoiding initial seal failure due to assembly tolerances.

[0031] In this embodiment, the self-tightening seal 520 includes a movable sleeve 521, an elastic element 522, and a fixed sleeve 523; the fixed sleeve 523 is fixedly sleeved on the support conduit 120 and located behind the fixed ring 510; the movable sleeve 521 is movably sleeved on the support conduit 120, and the front end of the movable sleeve 521 abuts against the rear side of the rotating inflation ring 312; the elastic element 522 is a compression spring 322B, which is sleeved on the support conduit 120, with one end of the compression spring 322B abutting against the fixed sleeve 523 and the other end of the compression spring 322B abutting against the movable sleeve 521.

[0032] The self-tightening seal 520 is specifically composed of a movable sleeve 521, a compression spring 322B, and a fixed sleeve 523. The fixed sleeve 523 is fixed to the support guide tube 120 and located behind the fixed ring 510. The movable sleeve 521 is slidably fitted onto the support guide tube 120, with its front end abutting against the rear side of the rotating inflation ring 312. The compression spring 322B is fitted onto the support guide tube 120, with one end abutting against the fixed sleeve 523 and the other end abutting against the movable sleeve 521, constantly pushing the movable sleeve 521 forward; this three-piece structure converts elastic force into stable axial thrust. The preload of the compression spring 322B can be precisely set to ensure that the movable sleeve 521 applies sufficient but not excessive pressure to the rotating inflation ring 312. The sliding fit between the movable sleeve 521 and the support guide tube 120 makes the friction of the rotating inflation ring 312 controllable during rotation, ensuring both sealing performance and smooth rotational operation. Compared to the integrated elastic pad, this structure has a longer lifespan and more uniform pressure. At the same time, by simply removing the rotating air ring from the outside to overcome the preload of the compression spring 322B, a sealed connection with the airbag unit 200 can be achieved, allowing for the deflation of the airbag unit 200. This makes it easy and painless to safely remove the entire device from the nasal cavity.

[0033] Furthermore, the self-tightening seal 520 is also provided with an axial guide structure; the axial guide structure includes a slide bar 530 provided on the fixed sleeve 523 and a limiting groove provided on the movable sleeve 521; the slide bar 530 extends axially, the limiting groove is opened axially, and the slide bar 530 slides in conjunction with the limiting groove.

[0034] The axial guide structure includes a slide bar 530 on the fixed sleeve 523 and a limiting groove on the movable sleeve 521, both extending axially and slidingly engaged. The engagement of the slide bar 530 and the limiting groove restricts the movable sleeve 521 to move only axially and prevents it from rotating relative to the support guide tube 120. This ensures that the front end of the movable sleeve 521 always contacts the rear side of the rotating inflation ring 312 with a positive plane, preventing uneven wear or jamming due to circumferential deflection. Simultaneously, this guide structure also prevents the movable sleeve 521 from tilting under the action of the compression spring 322B, ensuring the axial consistency of the elastic clamping force and thus improving the reliability of the seal.

[0035] The multi-balloon nasopharyngeal packing device also includes an inflation positioning ring 600, which is fixedly sleeved on the support catheter 120 and located in front of the rotating inflation ring 312. The inflation positioning ring 600 has multiple openings, each corresponding to the inflation port of an airbag unit 200. The inflation port passes through the opening and faces the rotating inflation ring 312. The rotating inflation ring 312 abuts axially against the inflation positioning ring 600.

[0036] The inflation positioning ring 600 is fixedly sleeved on the support guide tube 120 and located in front of the rotating inflation ring 312. It has multiple openings, each corresponding to the inflation port of an airbag unit 200, with the inflation port passing through the opening and facing the rotating inflation ring 312. The rotating inflation ring 312 axially abuts against the inflation positioning ring 600. The inflation positioning ring 600 serves a dual purpose: firstly, it fixes and restricts the inflation ports of each airbag unit 200 to a specific circumferential position, preventing displacement or twisting during use; secondly, it acts as a forward stop for the rotating inflation ring 312, forming an axial limit on the rotating inflation ring 312 together with the rear elastic sealing component 500. When the rotating inflation ring 312 is pushed forward by the elastic seal, its front side abuts against the inflation positioning ring 600, thereby precisely controlling the gap between the inflation ring and the inflation port, ensuring a constant axial distance between the through hole 312A and the inflation port.

[0037] Specifically, a ventilation tube 410 is fixedly installed within the breathing channel 400; the ventilation tube 410 axially penetrates the supporting tube 120; two outer layer through grooves are formed on the flexible outer layer 110, and two corresponding inner core through holes 312A are formed on the supporting tube 120. One end of the ventilation tube 410 communicates with the outer layer through grooves, and the other end communicates with the inner core through holes 312A. The ventilation tube 410 is fixedly installed within the breathing channel 400, and this tube axially penetrates the supporting tube 120. Two outer layer through grooves are formed on the flexible outer layer 110, and two corresponding inner core through holes 312A are formed on the supporting tube 120. One end of the ventilation tube 410 communicates with the outer layer through grooves, and the other end communicates with the inner core through holes 312A.

[0038] The ventilation tube 410 forms a breathing pathway independent of the cuff system. When the device is inserted into the nasopharynx, air can enter the ventilation tube 410 through one outer channel, flow out through the support tube 120 through another outer channel, thus achieving bidirectional airflow exchange. Patients do not need to breathe through their mouths, reducing complications such as dry mouth and sore throat. Simultaneously, the ventilation tube 410 is integrated within the support tube 120, without occupying additional nasal space or interfering with the independent inflation of the cuff unit 200.

[0039] The airbag unit 200 includes an airbag body 210 and a flexible air tube 220 communicating with the airbag body 210. The airbag body 210 is fixed to the inner surface of the flexible outer layer 110. One end of the flexible air tube 220 is connected to the airbag body 210, and the other end extends through the support conduit 120 to the inflation assembly 300. The airbag body 210 is fixed to the inner surface of the flexible outer layer 110, and one end of the flexible air tube 220 is connected to the airbag body 210, while the other end extends through the support conduit 120 to the inflation assembly 300. Fixing the airbag body 210 to the inner surface of the flexible outer layer 110 allows the airbag to directly push the flexible outer layer 110 outward when inflated, thereby conforming to the nasal mucosa and achieving uniform pressure. The flexible air tube 220 runs through the interior of the support conduit 120, preventing the tubing from becoming entangled or compressed between the flexible outer layer 110 and the support conduit 120. Each inflation tube 311 extends independently to the inflation assembly 300, ensuring that the inflation and deflation of each airbag do not interfere with each other. This separate layout makes the device easy to assemble, and the inflation tubes 311 are protected by the support conduit 120, making them less prone to bending and blockage.

[0040] In this embodiment, a contact pad 700 is also fixedly installed at the rear end of the tampon 100. When the device is inserted posteriorly through the nostril, the contact pad 700 first abuts against the posterior wall or roof of the nasopharynx, providing cushioning and limiting. The soft material of the pad prevents the hard structure from directly damaging the mucosa, while providing an axial positioning reference for the entire device and preventing excessive insertion. During device placement, the pad continuously disperses the pressure on the posterior wall, improving patient comfort and reducing the risk of agitation and bleeding caused by foreign body sensation.

[0041] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A multi-balloon nasopharyngeal packing device, characterized in that, The multi-balloon nasopharyngeal packing device includes: A plug body, the plug body comprising a flexible outer layer and a supporting conduit, the supporting conduit extending axially, the flexible outer layer being wrapped around the outside of the supporting conduit; An airbag unit, wherein the airbag unit extends toward one end of the packing body and has an inflation port, and a plurality of the airbag units are disposed between the flexible outer layer and the support conduit and are distributed circumferentially; An inflation assembly is disposed at one end of the filling body and communicates with the inflation port, the inflation assembly being capable of independently inflating each of the airbag units; The packing body is provided with a breathing channel, which extends through the flexible outer layer and the supporting conduit.

2. The multi-balloon nasopharyngeal packing device as described in claim 1, characterized in that, The inflation assembly includes a rotating inflation component and an indexing and positioning mechanism. The rotating inflatable component includes an inflation tube and a rotating inflation ring. The rotating inflation ring has a hollow inflation cavity. One end of the inflation tube is connected to an external air source, and the other end is connected to the inflation cavity. The rotating inflatable ring is movably sleeved on the support tube and can rotate relative to the support tube; The rotating inflation ring has a through hole on the side facing the inflation port for docking with the inflation port; The indexing and positioning mechanism is disposed between the rotating inflation ring and the supporting guide tube, and is used to align the through hole with the inflation port of each of the airbag units one by one.

3. The multi-balloon nasopharyngeal packing device as described in claim 2, characterized in that, The indexing and positioning mechanism includes a positioning column and an elastic positioning element; Multiple positioning posts are fixedly arranged circumferentially on the front of the rotating inflation ring, and correspond one-to-one with the inflation ports of the multiple airbag units with the same circumferential spacing. The elastic positioning element is fixedly mounted on the support guide tube. The elastic positioning element includes a movable block and a compression spring. The top of the movable block is provided with a semi-circular groove. The movable block elastically abuts against the positioning post via the compression spring; The through hole corresponds axially to the position of one of the positioning pins; As the rotating air ring rotates, the positioning pins sequentially compress the elastic positioning elements.

4. The multi-balloon nasopharyngeal packing device as described in claim 2, characterized in that, The multi-balloon nasopharyngeal packing device also includes an elastic sealing assembly, which includes a retaining ring and a self-tightening seal. The fixing ring is fixedly sleeved on the support guide tube and is located behind the rotating inflation ring; The self-tightening seal is disposed between the fixed ring and the rotating air ring, with the rear end of the self-tightening seal abutting against the fixed ring and the front end of the self-tightening seal elastically pressing against the rear side of the rotating air ring.

5. The multi-balloon nasopharyngeal packing device as described in claim 4, characterized in that, The self-tightening seal includes a movable sleeve, an elastic element, and a fixed sleeve; The fixing sleeve is fixedly fitted onto the supporting guide tube and is located behind the fixing ring; The movable sleeve is movably sleeved on the support guide tube, and the front end of the movable sleeve abuts against the rear side of the rotating inflation ring. The elastic element is a compression spring, which is sleeved on the support guide tube. One end of the compression spring abuts against the fixed sleeve, and the other end of the compression spring abuts against the movable sleeve.

6. The multi-balloon nasopharyngeal packing device as described in claim 5, characterized in that, The self-tightening seal is also provided with an axial guide structure; The axial guide structure includes a slide bar disposed on the fixed sleeve and a limiting groove disposed on the movable sleeve; The slide bar extends axially, the limiting groove is formed axially, and the slide bar slides in conjunction with the limiting groove.

7. The multi-balloon nasopharyngeal packing device as described in claim 2, characterized in that, The multi-balloon nasopharyngeal packing device also includes an inflation positioning ring, which is fixedly sleeved on the support catheter and located in front of the rotating inflation ring. The inflatable positioning ring has multiple openings, each opening corresponding to an inflation port of the airbag unit, and the inflation port passes through the opening and faces the rotating inflatable ring. The rotating inflation ring abuts axially with the inflation positioning ring.

8. The multi-balloon nasopharyngeal packing device as described in claim 1, characterized in that, A ventilation tube is fixedly installed in the breathing channel; the ventilation tube passes through the supporting tube axially. The flexible outer layer has two outer layer through grooves, and the support conduit has two corresponding inner core through holes. One end of the ventilation conduit is connected to the outer layer through groove, and the other end is connected to the inner core through hole.

9. The multi-balloon nasopharyngeal packing device as described in claim 1, characterized in that, The airbag unit includes an airbag body and a flexible air tube communicating with the airbag body; The airbag is fixed to the inner surface of the flexible outer layer; one end of the flexible air tube is connected to the airbag, and the other end extends through the support conduit to the inflation assembly.

10. The multi-balloon nasopharyngeal packing device as described in claim 1, characterized in that, A contact pad is also fixedly installed at the rear end of the filling body.

Images