Nasopharynx supporting device

Abstract

The invention relates to the technical field of medical instruments, in particular to a nasopharynx supporting device which comprises a hollow main pipe body, one end of the main pipe body is fixedly connected with a conical head, the conical head is conical, the interior of the main pipe body is rotationally connected with a rotating rod, and the side, close to the conical head, of the inner wall of the main pipe body is fixedly connected with a fixing base. One end of the rotating rod is rotationally connected to the fixing base in a clamped mode, an expansion assembly is arranged outside the fixing base, the expansion assembly completes supporting work in the nasopharynx through rotation of the rotating rod, a supporting assembly is arranged in the middle of the interior of the main catheter body, and the supporting assembly is driven through work of the expansion assembly. The rotating rod is used for improving the overall stability of the expansion assembly after being supported in the nasopharynx, and the interior of the rotating rod is hollow. Compared with the prior art, the nasopharynx supporting device solves the problem that in the prior art, the nasopharynx supporting device is difficult to improve the comfort level and integrate the drug delivery function while being stably fixed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a nasopharyngeal support device. BACKGROUND

[0002] As a kind of key medical device, nasopharyngeal support device is widely used in the treatment of nasopharyngeal cavity stenosis or atresia caused by congenital disease, infection, tumor or postoperative recovery, etc. The main function of this kind of device is to expand the narrow nasopharyngeal passage by mechanical support, maintain the patency of the airway, and prevent the patient from developing difficult ventilation or even asphyxia. The traditional nasopharyngeal support device usually contains a catheter and a support structure such as a balloon arranged thereon. After being placed in the nasal cavity, the balloon is inflated to prop open the nasopharynx, thereby improving respiration.

[0003] The existing nasopharyngeal support device relies on external straps or similar mask devices to fix the support device body on the patient's head to prevent it from shifting or slipping. The above fixing method has been applied in clinical practice, but its inherent design defects significantly affect the patient's long-term use experience and treatment convenience. Firstly, the head-mounted strap fixation not only brings continuous compression to the patient's face and head, but also severely limits the patient's daily activities, especially during sleep or bed rest. The fixed strap is prone to shift or tighten due to body position changes, which exacerbates the patient's discomfort and reduces the comfort of use. Secondly, when local medication is needed for nasopharyngeal lesions during treatment, the traditional nasopharyngeal support device lacks an integrated drug delivery channel. Medical staff often need to disassemble the entire support device before performing the medication operation, and then reassemble and fix it after completing the operation. This cumbersome operation process not only increases the workload of medical staff, but also increases the risk of nasal mucosa damage in patients due to frequent insertion and removal operations, and may disrupt the continuity of support treatment, affecting the treatment effect.

[0004] Furthermore, we disclose a nasopharyngeal support device to meet the actual needs of the existing nasopharyngeal support device, which is difficult to achieve stable fixation, improve comfort and integrate drug delivery function. SUMMARY

[0005] Therefore, the purpose of the present application is to provide a nasopharyngeal support device to solve the problem that the existing nasopharyngeal support device is difficult to achieve stable fixation while improving comfort and integrating drug delivery function.

[0006] Based on the above purpose, the application provides a nasopharynx support device, which comprises a hollow main pipe body, one end of the main pipe body is fixedly connected with a tapered head, the tapered head is tapered, a rotating rod is rotatably connected inside the main pipe body, a fixed seat is fixedly connected to one side of the inner wall of the main pipe body close to the tapered head, one end of the rotating rod is rotatably connected in the fixed seat, and an expansion assembly is arranged outside the fixed seat, the expansion assembly completes the support work inside the nasopharynx by rotating the rotating rod, a support assembly is arranged in the middle part of the inner wall of the main pipe body, the support assembly is driven by the work of the expansion assembly, and is used for increasing the overall stability of the expansion assembly after supporting inside the nasopharynx, the inside of the rotating rod is hollow, a medicine delivery pipe is arranged in the inside of the rotating rod, a medicine delivery assembly is arranged in the inside of the tapered head, the medicine delivery assembly is communicated with the medicine delivery pipe and is used for jetting and drug delivery work on the nasopharynx lesion.

[0007] Preferably, the expansion assembly comprises a plurality of connecting rods rotatably connected outside the fixed seat, one end of the connecting rod away from the fixed seat is rotatably connected with a contact ball, the contact ball is made of flexible material, the middle part of the connecting rod is provided with a waist-shaped slot, the main pipe body is uniformly distributed with an opening slot with the same number of connecting rods along the circumference, and the connecting rod is located inside the opening slot.

[0008] Preferably, the expansion assembly further comprises a movable seat sleeved outside the rotating rod on one side of the fixed seat, one side of the outer wall of the rotating rod is provided with an external thread, the movable seat is threadedly connected with the rotating rod through the external thread on the outer wall of the rotating rod, a plurality of first jacks are uniformly and interval rotatably connected to the outer wall of the movable seat, the number of the first jacks is the same as that of the connecting rods, the upper end of the first jack is rotatably connected with a second jack through a rotating shaft, the outside of the second jack is provided with a torsion spring, and the upper end of the second jack is rotatably connected in the waist-shaped slot on the connecting rod.

[0009] Preferably, the middle part of the inner wall of the main pipe body is fixedly connected with a baffle on both sides, the internal space formed by the two baffles is a piston cavity, the support assembly comprises a piston plate slidably connected inside the piston cavity, the middle part of the piston plate is slidably connected with the outer wall of the rotating rod and is provided with a sliding sealing structure, the side end face of the piston plate close to the movable seat is fixedly connected with a sliding rod on both sides, and one end of the sliding rod away from the piston plate penetrates the baffle and is fixedly connected with the movable seat.

[0010] Preferably, a plurality of support air bags are uniformly and interval arranged at the position of the outer wall of the piston cavity, the support air bags are communicated with the piston cavity, and a blocking strip is fixedly connected to one end of the inner wall of the piston cavity inside the support air bag close to the piston plate.

[0011] Preferably, the external part of the supporting air bag is uniformly and fixedly connected with a plurality of protruding strips made of flexible material.

[0012] Preferably, the medicine delivery assembly comprises a flow dividing ball fixedly connected to the inside of the cone head, a plurality of medicine delivery nozzles are uniformly and fixedly installed on the side of the flow dividing ball away from the main pipe body, the spray angles of the medicine delivery nozzles are all different, and the output ends of the medicine delivery nozzles penetrate the cone head.

[0013] Preferably, a plurality of through holes are uniformly and fixedly arranged in the middle part of the outer wall of the cone head, and an absorption layer is arranged on the inner wall of the cone head, which is used to absorb liquid entering the inside of the cone head through the through holes.

[0014] Preferably, a limiting plate is fixedly connected to the side of the outer wall of the medicine delivery pipe away from the flow dividing ball, and the outer part of the limiting plate is clamped and rotationally connected to the inside of the rotating rod.

[0015] Preferably, one end of the rotating rod penetrating to the outside of the main pipe body is fixedly connected with a driving ring used to manually drive the rotating rod to rotate, and the end of the medicine delivery pipe protruding to the outside of the rotating rod is provided with an interface used to be connected with an external medicine delivery pipeline.

[0016] The beneficial effects of the present application are as follows: 1. The nasopharyngeal support device deeply integrates the expansion function and the fixing function, significantly improves the treatment efficiency and patient comfort, when the operator rotates the rotating rod to drive the expansion assembly to expand, the axial movement of the movable seat will synchronously drive the connecting rod to push the piston plate, and the gas in the piston cavity is pressed into the supporting air bag, this process makes the supporting air bag automatically expand while expanding the nasopharynx, and forms a flexible surface contact with the inner wall of the nasal cavity, so that the reliable fixation of the support device in the nasal cavity is realized, this built-in fixation method completely discards the traditional external bandage or adhesive tape, effectively avoids the problems of facial skin compression, marks and allergic reactions, etc., the flexible protruding strips on the surface of the supporting air bag further increase the fixing stability while dispersing the contact pressure with the nasal cavity tissue, so that the fixation is more comfortable, and more importantly, the fixation action and the expansion action are derived from the same operation, which realizes "one step to the destination", not only simplifies the operation process of the medical staff, but also ensures that the instrument is anchored stably at the moment when the nasopharyngeal passage is successfully expanded, greatly reduces the displacement risk caused by unstable fixation, and is suitable for patients who need to wear the support device for a long time.

[0017] 2、The nasopharyngeal support device integrates the drug delivery system inside the support body, realizing direct and accurate drug delivery while maintaining the support state, solving the pain point of repeated removal and wearing of traditional treatment devices, and the core is the communication design of the medicine delivery pipe penetrating the rotating rod, the shunt ball in the cone head and the multi-angle medicine delivery nozzle, after the support device is normally placed and fixed, the medical staff can inject liquid medicine into the medicine delivery pipe through the external interface, the liquid medicine is distributed by the shunt ball and sprayed by the medicine delivery nozzle with different angles, which can cover multiple sides of the nasopharyngeal lesion and realize accurate drug delivery, this design enables drug treatment to be carried out without interruption of support treatment, ensuring the continuity of the treatment process, avoiding secondary damage and pain to the nasal mucosa of the patient caused by frequent removal and placement of the support device, and greatly reducing the work burden of medical staff, at the same time, the through hole and the absorption layer of the cone head can timely drain and absorb nasal secretions, keep the local environment relatively clean, and further improve the comfort of the patient during the drug delivery process. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present application or prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only a part of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present application. Figure 2 It is a schematic diagram of the internal three-dimensional structure of the present application. Figure 3 It is a schematic diagram of the local three-dimensional structure of the present application. Figure 4 It is a schematic diagram of the three-dimensional structure of the expansion assembly of the present application. Figure 5 It is a schematic diagram of the internal local three-dimensional structure of the main pipe body of the present application. Figure 6 It is a schematic diagram of the installation of the limiting plate of the present application.

[0020] The marks in the figure are: 1, main pipe body; 2, cone head; 3, support air bag; 4, rotating rod; 5, partition; 6, piston cavity; 7, fixed seat; 8, connecting rod; 9, first top rod; 10, second top rod; 11, contact ball; 12, medicine delivery pipe; 13, open slot; 14, movable seat; 15, through hole; 16, shunt ball; 17, medicine delivery nozzle; 18, absorption layer; 19, waist-shaped slot; 20, interface; 21, rotating shaft; 22, sliding rod; 23, piston plate; 24, baffle; 25, protruding strip; 26, driving ring; 27, limiting plate. DETAILED DESCRIPTION

[0021] The purposes, technical solutions and advantages of the present application will become more apparent after reading the following detailed description of the embodiments.

[0022] It should be noted that, unless otherwise defined, technical terms or scientific terms used in the present application shall have the common meaning understood by one of ordinary skill in the art to which the present application pertains. The terms "first", "second", and similar terms used in the present application do not denote any order, quantity, or importance, but are merely used to distinguish different components. The terms "include", "contain", and similar terms mean that the elements or objects before the terms encompass the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connect" or "connected" and similar terms do not mean physical or mechanical connection, but can include electrical connection, whether direct or indirect. The terms "upper", "lower", "left", "right", and the like merely indicate relative positional relationships, which can change when the absolute positions of the described objects change.

[0023] As shown in Figures 1 to 6 A nasopharyngeal support device includes a hollow main pipe body 1, one end of the main pipe body 1 is fixedly connected with a tapered head 2, the tapered head 2 is tapered, a rotating rod 4 is rotatably connected inside the main pipe body 1, a fixed seat 7 is fixedly connected to one side of the inner wall of the main pipe body 1 close to the tapered head 2, one end of the rotating rod 4 is rotatably connected in the fixed seat 7, and an expansion assembly is arranged outside the fixed seat 7, the expansion assembly completes the support work inside the nasopharynx by rotating the rotating rod 4, a support assembly is arranged in the middle of the main pipe body 1, the support assembly is driven by the work of the expansion assembly, and is used to increase the overall stability of the expansion assembly after supporting inside the nasopharynx, the rotating rod 4 is hollow, a medicine delivery pipe 12 is arranged inside the rotating rod 4, a medicine delivery assembly is arranged inside the tapered head 2, the medicine delivery assembly is in communication with the medicine delivery pipe 12 and is used to perform jetting and drug delivery work on the nasopharyngeal lesion; The nasopharyngeal support device integrates the expansion assembly, the support assembly and the medicine delivery assembly in the inside of the main pipe body 1. When in use, first, the taper head 2 at the front end of the main pipe body 1 is placed at the lower end of the patient's nasal cavity. The taper of the taper head 2 facilitates the insertion of the main pipe body 1 into the patient's nasal cavity. After the main pipe body 1 is inserted into the patient's nasal cavity, it is continuously inserted inward, so that the end of the main pipe body 1 close to the taper head 2 is located at the patient's nasopharynx. At this time, the multiple connecting rods 8 in the middle of the expansion assembly can be driven to rotate around the fixed seat 7 by rotating the rotating rod 4, so that the contact balls 11 at the tail end of the connecting rods 8 contact the narrow position of the patient's nasopharynx. When the connecting rods 8 continue to rotate, the expansion and support work of the nasopharynx is completed. Then, when the expansion assembly is working, the support assembly can be driven to work. The support assembly is driven by the movement of the movable seat 14 in the expansion assembly. When the expansion assembly expands, the piston plate 23 in the support assembly can move in the piston cavity 6. When the expansion assembly expands, the movement of the piston plate 23 pushes the gas in the piston cavity 6 into the support air bag 3 outside, so that the support air bag 3 expands and contacts the inner wall of the nasal cavity, completing the fixation of the entire support device on the patient's nose. When the support device needs to be administered when worn, the medicine liquid can be sent into the medicine delivery pipe 12, and then sprayed to the lesion position of the patient's nasopharynx by the medicine spraying head 17 on the shunt ball 16 at the tail end of the medicine delivery pipe 12.

[0024] Further, as shown in Figure 1 、 Figure 2 and Figure 4 , the expansion assembly includes multiple connecting rods 8 rotatably connected outside the fixed seat 7. The end of the connecting rod 8 away from the fixed seat 7 is rotatably connected with a contact ball 11. The contact ball 11 is made of flexible material. The middle part of the connecting rod 8 is provided with a waist-shaped slot 19. The main pipe body 1 is uniformly distributed with the same number of opening slots 13 as the connecting rods 8. The connecting rod 8 is located inside the opening slot 13. The expansion assembly further includes a movable seat 14 sleeved outside the rotating rod 4 on one side of the fixed seat 7. The outer wall of the rotating rod 4 is provided with external threads. The movable seat 14 is threadedly connected with the rotating rod 4 through the external threads on the outer wall of the rotating rod 4. The outer wall of the movable seat 14 is uniformly and spacedly rotatably connected with multiple first jacks 9. The number of the first jacks 9 is the same as the number of the connecting rods 8. The upper end of the first jack 9 is rotatably connected with a second jack 10 through a rotating shaft 21. The outside of the second jack 10 is provided with a torsion spring. The upper end of the second jack 10 is slidingly connected in the waist-shaped slot 19 on the connecting rod 8; When the front end of the main body 1 is inserted into the narrow position of the nasopharynx of the patient, the user can manually rotate the rotating rod 4, and since the outer wall of the rotating rod 4 is provided with external threads, the movable seat 14 can move forward and backward, and when expansion is needed, the movable seat 14 needs to be moved towards the fixed seat 7, and when the movable seat 14 moves, the first top rod 9 and the second top rod 10 rotating on the upper end of the movable seat 14 will push the lower end of the connecting rod 8 to rotate around the fixed seat 7, so that the upper end of the connecting rod 8 moves outward to complete the expansion action, and when the second top rod 10 pushes the connecting rod 8 to rotate, the end of the second top rod 10 connected with the connecting rod 8 will slide in the waist-shaped slot on the connecting rod 8, ensuring that the linear movement of the movable seat 14 can normally drive the connecting rod 8 to rotate around the fixed seat 7, and a rotating shaft 21 is arranged between the first top rod 9 and the second top rod 10, and the outside of the rotating shaft 21 is provided with a torsional spring, and under normal circumstances, the first top rod 9 and the second top rod 10 will be in the same straight line under the action of the torsional force of the torsional spring, and when the contact ball 11 contacts the nasopharynx of the patient with a large pressure and the movable seat 14 still moves forward, the first top rod 9 and the second top rod 10 will rotate relative to each other, so that the connecting rod 8 will not rotate due to the movement of the movable seat 14, which reduces the possibility of damage to the nasopharynx of the patient caused by the first use of the rotating rod 4 to drive the expansion assembly to expand by inexperienced personnel; When the connecting rod 8 rotates to a certain position, the contact ball 11 on the upper end of the connecting rod 8 will contact the inner wall of the nasopharynx of the patient, the contact ball 11 is made of liquid silicone rubber material, has super soft hardness of Shore A 10-30 degrees, can provide excellent touch, has high resilience and low compression permanent deformation characteristics, ensures that it is not easy to deform after long-term use, its surface is smooth and not easy to adhere to the tissue, and is convenient for cleaning and disinfection, at this time, the rotating rod 4 can continue to rotate, which can drive the connecting rod 8 to continue to rotate, and then the support work of the nasopharynx is completed through the resistance of the contact ball 11, the narrow nasopharynx passage is expanded, and the respiratory tract of the patient is ensured to be unobstructed, since the contact ball 11 is made of flexible material, the material will not cause damage to the patient when contacting the nasopharynx of the patient, and the use safety is improved, and in addition, since the movable seat 14 and the rotating rod 4 are connected by thread transmission, the connection mode has a self-locking effect, and when the rotating rod 4 is removed, the expansion assembly will not shrink, realizing the driving mode of the expansion assembly "locking with use", and improving the use convenience.

[0025] Further, as Figure 2 , Figure 5As shown, the inner middle part of the main pipe body 1 is fixedly connected with the partition plate 5, the internal space composed of the two partition plates 5 is the piston cavity 6, the support assembly includes the piston plate 23 which is slidingly connected in the piston cavity 6, the middle part of the piston plate 23 is slidingly connected with the outer wall of the rotating rod 4 and is provided with a sliding sealing structure, the side end face of the piston plate 23 close to the movable seat 14 is fixedly connected with the sliding rod 22 on both sides of the middle part, the ends of the two sliding rods 22 away from the piston plate 23 are penetratingly connected with the movable seat 14, the outer wall of the main pipe body 1 located at the piston cavity 6 is uniformly and spacedly provided with a plurality of support air bags 3, the plurality of support air bags 3 are communicated with the piston cavity 6, the inner wall of the piston cavity 6 is fixedly connected with the blocking strip 24 on the end close to the piston plate 23 inside the support air bag 3, the blocking strip 24 is used for limiting the movement of the piston plate 23, the outer part of the support air bag 3 is uniformly and spacedly fixedly connected with a plurality of protruding strips 25, the protruding strips 25 are made of flexible material; When the movable seat 14 moves, the two slide rods 22 on the side close to the partition plate 5 will move synchronously, one end of the two slide rods 22 extends into the piston cavity 6 formed by the two partition plates 5, and is fixedly connected with the piston plate 23, when the movable seat 14 moves, the piston plate 23 can move synchronously, the inner and outer walls of the piston plate 23 are tightly fitted with the outer wall of the rotating rod 4 and the inner wall of the main pipe body 1, so that when the piston plate 23 moves, the gas in the piston cavity 6 will be squeezed, when the movable seat 14 moves to the side close to the fixed seat 7 to realize the expansion action, at this time, the piston plate 23 also moves to the fixed seat 7, the gas in the piston cavity 6 is squeezed and pushed into the supporting air bag 3, so that the supporting air bag 3 expands, when the supporting air bag 3 expands, it also expands outward, when the supporting air bag 3 expands to a certain volume, the outside of the supporting air bag 3 will contact the inner wall of the patient's nasal cavity, and the fixing work of the support device on the patient's nose is completed, when the supporting air bag 3 continues to expand, the part of the supporting air bag 3 in contact with the nasal cavity deforms, increasing the contact area, further improving the support stability, and the convex strip 25 made of flexible material can reduce the damage of the supporting air bag 3 to the inside of the nasal cavity, and improve the use comfort, when the expansion assembly contracts, the movable seat 14 moves reversely and drives the piston plate 23 to move reversely synchronously, the gas in the supporting air bag 3 is sucked back into the piston cavity 6, so that the supporting air bag 3 contracts, that is, the supporting work of the support device is cancelled, in order to ensure the gas tightness of the piston plate 23 sliding in the piston cavity 6, the sliding sealing structure adopts an axial lip-shaped sealing ring to realize dynamic sealing, specifically, rectangular cross-section grooves are respectively arranged at the outer edge and the center of the piston plate 23 and the matching hole of the rotating rod 4, and a sealing ring made of fluorine rubber is nested and installed, the inner and outer lips of the sealing ring have a pre-compression rate of 15%-25% after installation, which ensures that the leakage rate is less than 0.1 mL / min under a working gas pressure of 0-10 kpa (according to GB / T 13871.1 standard test), at the same time, the dynamic friction coefficient between the sealing ring and the inner wall of the piston cavity 6 and the outer surface of the rotating rod 4 is controlled within the range of 0.08-0.12, so that the piston plate 23 can smoothly slide under the drive of the movable seat 14, and has excellent sealing performance and low friction resistance; According to the in-vitro nasal cavity test (according to YY / T 1554-2017 medical device nasal cavity application standard), the supporting air bag 3 can generate a radial supporting force of 0.5-1.5 N when the inflation pressure is 3-5 kpa, under this pressure range, the contact area between the air bag and the nasal mucosa reaches 6-8 cm², the friction coefficient is 0.3-0.5 (measured on an artificial mucosa model), the effective resistance to axial displacement threshold is greater than 10 N (simulating cough / sneezing impact force), and the air bag inflation volume is controlled within 0.5-1 mL (corresponding to the diameter expansion to 8-12 mm), which not only ensures the stability but also avoids excessive compression leading to mucosal ischemia, The displacement accuracy of the movable seat 14 in the expansion assembly is ±0.1 mm / turn (controlled by the thread pitch), which ensures that the support force increases linearly. Experiments show that, from the initial state to full expansion (contact ball 11 displacement of 8 mm), the internal pressure of the support air bag 3 synchronously rises from 0 kpa to 5 kpa, the mechanical efficiency of the linkage system is more than 85%, and the self-locking structure has no slip under static load.

[0026] Further, as shown in Figures 1 to 5 The medicine delivery assembly includes a flow distribution ball 16 fixedly connected inside the tapered head 2. The flow distribution ball 16 is uniformly and spacedly provided with a plurality of medicine delivery nozzles 17 on the side away from the main body 1. The spray angles of the plurality of medicine delivery nozzles 17 are all different. The output ends of the medicine delivery nozzles 17 penetrate through the tapered head 2. A plurality of through holes 15 are uniformly and spacedly provided in the middle of the outer wall of the tapered head 2. An absorption layer 18 is arranged on the inner wall of the tapered head 2. The absorption layer 18 is used to absorb the liquid entering the inside of the tapered head 2 through the through holes 15. A limiting plate 27 is fixedly connected to the outer wall of the medicine delivery pipe 12 on the side away from the flow distribution ball 16. The outer part of the limiting plate 27 is rotatably connected to the inside of the rotating rod 4. When the support needs to perform spray delivery work when being worn, the liquid medicine is injected into the inside of the medicine delivery pipe 12 through the external pipeline or the syringe. The tail end of the medicine delivery pipe 12 communicates with the flow distribution ball 16. When the liquid medicine enters the flow distribution ball 16, it will be distributed to the medicine delivery nozzles 17 of different angles. When the medicine is continuously delivered to the inside of the flow distribution ball 16, the original liquid medicine in the inside of the flow distribution ball 16 will be sprayed out through the medicine delivery nozzles 17. Since the angles of the medicine delivery nozzles 17 are different, the medicine delivery work to the nasopharyngeal lesion is as complete as possible. In normal use, the mucus and other liquid secreted by the patient's nasopharynx can flow into the inside of the tapered head 2 through the through holes 15. The liquid flowing into the inside of the tapered head 2 can be absorbed by the absorption layer 18. This arrangement can reduce the liquid residue in the patient's nasopharynx, improve the comfort of the patient, and the position and direction of the medicine delivery nozzles 17 and the through holes 15 are not the same, so the liquid medicine sprayed out by the medicine delivery nozzles 17 will not be excessively absorbed by the absorption layer 18, causing poor drug efficacy. The absorption layer 18 is made of high molecular water-absorbing fiber and spunlace non-woven fabric composite material. The specific structure is that the base layer is made of medical absorbent cotton or viscose fiber spunlace non-woven fabric, which ensures softness and skin friendliness. High molecular water-absorbing fiber is compounded on the surface or inside. The working principle of the absorption layer 18 is that the high molecular water-absorbing fiber can quickly absorb and lock a large amount of liquid, and the spunlace non-woven fabric structure is fluffy and soft, which will not bring a hard feeling to the nasal cavity. This composite structure can realize the functions of rapid flow guide and high-efficiency water locking. The flow range of the medicine delivery nozzle 17 is 0.05-0.1 mL / s (under 10-15 kpa input pressure), the atomized particle size median D50 = 30-50 μm (measured by Malvern laser particle size analyzer), ensuring that the medicine liquid covers the lesion area and has no dripping, the pressure loss in the internal flow channel of the shunt ball 16 is <2 kpa, and the flow difference between multiple nozzles is <10%. The absorption rate of the absorption layer 18 to simulated nasal cavity secretions is 0.2 mL / s, and the saturated absorption amount is ≥5 mL, meeting the YY / T 0471 contact wound dressing standard.

[0027] Further, as shown in Figure 6 The end of the rotating rod 4 penetrating to the outside of the main pipe body 1 is fixedly connected with a driving ring 26 for manually driving the rotating rod 4 to rotate, and the end of the medicine delivery pipe 12 extending to the outside of the rotating rod 4 is provided with an interface 20 for connecting with an external medicine delivery pipeline; In actual use, the user can drive the rotating rod 4 in the main pipe body 1 by rotating the driving ring 26 to complete the driving work of the expansion assembly and the supporting assembly, and when the medicine delivery operation is needed, the interface 20 outside the medicine delivery pipe 12 is connected with the medicine delivery pipeline to facilitate the jet medicine delivery work.

[0028] It should be understood by those skilled in the art that the above discussion of any embodiment is only exemplary and is not intended to imply that the scope (including claims) of the present application is limited to these examples; under the idea of the present application, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above. In order to be brief, they are not provided in details.

[0029] The present application is intended to cover all such alternatives, modifications and variations as fall within the broad scope of the appended claims. Accordingly, any and all such modifications, variations, omissions, and equivalents are intended to be encompassed by the present application.

Claims

1. A nasopharyngeal support device, characterized in that: The device includes a hollow main tube (1), one end of which is fixedly connected to a cone (2). The cone (2) is cone-shaped. A rotating rod (4) is rotatably connected inside the main tube (1). A fixed seat (7) is fixedly connected to the inner wall of the main tube (1) near the cone (2). One end of the rotating rod (4) is engaged and rotatably connected to the fixed seat (7). An expansion component is provided outside the fixed seat (7). The expansion component uses the rotation of the rotating rod (4) to complete the support work inside the nasopharynx. A support component is provided in the middle of the main tube (1). The support component is driven by the work of the expansion component and is used to increase the overall stability of the expansion component after it is supported inside the nasopharynx. The inside of the rotating rod (4) is hollow. A drug delivery tube (12) is provided inside the rotating rod (4). A drug delivery component is provided inside the cone (2). The drug delivery component is connected to the drug delivery tube (12) and is used to spray drug delivery to the nasopharyngeal lesion.

2. The nasopharyngeal support device according to claim 1, characterized in that: The expansion assembly includes multiple connecting rods (8) rotatably connected to the outside of the fixed base (7). The end of the connecting rod (8) away from the fixed base (7) is engaged and rotatably connected to a contact ball (11). The contact ball (11) is made of flexible material. A waist-shaped groove (19) is opened in the middle of the connecting rod (8). The main body (1) has an opening groove (13) with the same number as the connecting rod (8) evenly distributed in the circumferential direction. The connecting rod (8) is located inside the opening groove (13).

3. A nasopharyngeal support device according to claim 2, characterized in that: The expansion assembly also includes a movable seat (14) sleeved on the outside of the rotating rod (4) and located on one side of the fixed seat (7). The outer wall of the rotating rod (4) is provided with an external thread. The movable seat (14) is threaded to the rotating rod (4) through the external thread on the outer wall of the rotating rod (4). The outer wall of the movable seat (14) is evenly spaced and rotatably connected with a plurality of first push rods (9). The number of first push rods (9) is the same as the number of connecting rods (8). The upper end of the first push rod (9) is rotatably connected to a second push rod (10) through a rotating shaft (21). The outside of the second push rod (10) is provided with a torsion spring. The upper end of the second push rod (10) is engaged and slidably connected in the waist-shaped groove (19) on the connecting rod (8).

4. A nasopharyngeal support device according to claim 1, characterized in that: The inner middle part of the main body (1) is fixedly connected to two partitions (5), and the internal space formed by the two partitions (5) is the piston chamber (6). The support assembly includes a piston plate (23) slidably connected inside the piston chamber (6). The middle part of the piston plate (23) is slidably connected to the outer wall of the rotating rod (4) and is provided with a sliding sealing structure. The piston plate (23) is fixedly connected to two sliding rods (22) on both sides of the middle part of the end face near the movable seat (14). The ends of the two sliding rods (22) away from the piston plate (23) pass through the partitions (5) and are fixedly connected to the movable seat (14).

5. A nasopharyngeal support device according to claim 4, characterized in that: The main body (1) is provided with a plurality of support airbags (3) evenly spaced on the outer wall of the piston cavity (6). The plurality of support airbags (3) are connected to the piston cavity (6). A stop bar (24) is fixedly connected to the inner wall of the piston cavity (6) at the end of the support airbag (3) near the piston plate (23). The stop bar (24) is used to limit the movement of the piston plate (23).

6. A nasopharyngeal support device according to claim 5, characterized in that: The support airbag (3) is fixedly connected with a plurality of protruding strips (25) at uniform intervals on the outside, and the protruding strips (25) are made of flexible material.

7. A nasopharyngeal support device according to claim 1, characterized in that: The drug delivery assembly includes a diverter ball (16) fixedly connected inside the cone (2). Multiple drug delivery nozzles (17) are evenly spaced on the side of the diverter ball (16) away from the main body (1), and the spray angles of the multiple drug delivery nozzles (17) are different. The output end of the drug delivery nozzle (17) passes through the cone (2).

8. A nasopharyngeal support device according to claim 7, characterized in that: The outer wall of the cone (2) is provided with a plurality of through holes (15) evenly spaced apart. The inner wall of the cone (2) is provided with an absorption layer (18), which is used to absorb the liquid that enters the cone (2) through the through holes (15).

9. A nasopharyngeal support device according to claim 8, characterized in that: A limiting plate (27) is fixedly connected to the side of the outer wall of the delivery tube (12) away from the diverter ball (16), and the external locking of the limiting plate (27) is rotatably connected to the inside of the rotating rod (4).

10. A nasopharyngeal support device according to claim 9, characterized in that: The rotating rod (4) has a drive ring (26) fixedly connected to one end of the main tube (1) for manually driving the rotating rod (4) to rotate. The end of the drug delivery tube (12) extending out of the rotating rod (4) is provided with an interface (20) for connecting to an external drug delivery pipeline.

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