An external auditory canal postoperative anti-stenosis dilating stent

Abstract

The application discloses an expansion stent for preventing stenosis after external auditory canal operation and belongs to the technical field of external auditory canal postoperative care. The position of the adjusting ring is adjusted by operating the locking assembly, so that the five hollow rods can be in contact with the inner wall of the external auditory canal. Since the internal structure of the external auditory canal is not a regular circle, the multiple hollow rods are in contact with the internal structure of the external auditory canal in sequence during movement, thereby preventing long-term stenosis or recurrence of the external auditory canal. When the dynamic adjustment is performed according to the individual differences and growth changes of the external auditory canal, the gas is introduced into the hollow rods, the gas entering the internal structure of the hollow rods can extrude the multiple rubber air rings, the rubber air rings can be inflated and in contact with the inner wall of the external auditory canal, the sensing module is used for monitoring the pressure and deformation data in the external auditory canal in real time, the expansion state can be dynamically adjusted according to the individual differences and growth changes of the external auditory canal, the expansion effect is improved, and the rubber air rings are used for flexibly supporting the external auditory canal, so that the external auditory canal is not damaged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of postoperative care of external auditory canal, in particular to an expansion stent for preventing stenosis after external auditory canal surgery. BACKGROUND

[0002] The stenosis prevention support system for children after external auditory canal shaping surgery mainly uses hard supports or fixed devices to avoid external auditory canal stenosis. However, these support systems generally have the following problems:

[0003] Poor adaptability: existing support systems are usually fixed size or manually adjustable, which is difficult to dynamically adjust according to the individual differences and growth changes of the children's external auditory canal; Insufficient comfort: hard supports are usually rigid, which may cause discomfort and affect the daily life of children.

[0004] Easily damaged: fixed support systems may cause secondary damage to the external auditory canal due to lack of flexibility, especially in the case of active children; Maintenance is not convenient: existing support systems often need frequent inspection and adjustment during use, increasing the difficulty of care and medical costs.

[0005] Limited effect: due to the adaptability and comfort problems of existing systems, long-term stenosis or recurrence of the external auditory canal cannot be effectively avoided. SUMMARY

[0006] The purpose of the present application is to provide an expansion stent for preventing stenosis after external auditory canal surgery to solve the problems of existing support systems being generally fixed size or manually adjustable, which is difficult to dynamically adjust according to the individual differences and growth changes of the children's external auditory canal, and the fixed support system may cause secondary damage to the external auditory canal due to lack of flexibility and insufficient comfort.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0008] The utility model provides an expansion support for preventing stenosis after external auditory canal operation, including base, one side of base is equipped with base plate, is equipped with adjusting ring between base plate and base, five slide holes are seted up on adjusting ring, fixed column is connected in the slide hole and slides, both ends of fixed column are fixedly connected in the opposite side of base plate and base, five deflection sub -assemblies are equipped with in the side of base close to base plate, the end of deflection sub -assembly is rotatably connected on base through pin shaft, and deflection sub -assembly is located between base and side plate, one end of five deflection sub -assemblies is installed with support sub -assembly, support sub -assembly penetrates the middle part of side plate, and the other end of five support sub -assemblies penetrates the middle part of base and is installed with dynamic adjusting sub -assembly, the end of dynamic adjusting sub -assembly is connected with swivel joint.

[0009] As a further scheme of the utility model, the deflection sub-assembly includes a deflection frame and a connecting rod. The deflection frame is substantially triangular, and a first end of the outer side is rotatably connected to one side of the base through a pin shaft. One end of the connecting rod is rotatably connected to a second end of the deflection frame, and an end of the connecting rod away from the deflection frame is rotatably connected to one side of the base through a pin shaft. The connecting rod is inclinedly arranged on the base. The support sub-assembly is installed on a third end of the deflection frame close to the center of the base.

[0010] As a further scheme of the utility model, the support sub-assembly includes a hollow rod. A bearing is sleeved on the outer wall of the hollow rod. The bearing is clamped on the third end of the deflection frame close to the center of the side plate. A sensing module is installed on the side of the outer wall of the hollow rod close to the bearing. The sensing module includes a micro pressure sensor and a displacement sensor and is used for monitoring the pressure and deformation data in the external auditory canal in real time.

[0011] As a further scheme of the utility model, a plurality of rubber air rings are arranged on the outer wall of the hollow rod. The rubber air rings are in communication with the inside of the hollow rod. One end of the hollow rod penetrating the bearing is provided with a swivel joint. The end of the dynamic adjusting sub-assembly is connected with the swivel joint.

[0012] As a further scheme of the utility model, the dynamic adjusting sub-assembly includes an air box. The air box is installed on the side of the base away from the side plate. A micro air pump is in communication with the bottom of the air box. The micro air pump is installed on one side of the base. The air box is annularly designed and is connected with five air hoses on the inner wall. The other ends of the air hoses are in communication with the ends of the support sub-assemblies.

[0013] As a further scheme of the present application, the locking assembly comprises a fixed block, the bottom of the fixed block is fixedly connected with a connecting block, the bottom of the connecting block is fixed with the adjusting ring, the two sides of the connecting block are respectively provided with a clamping plate and a sliding block, the sliding block is slidingly connected in the slide, and the slide is designed in a ring shape.

[0014] As a further scheme of the present application, the bottom of the clamping plate is provided with a plurality of teeth and is clamped in a tooth groove, the top of the clamping plate is fixedly connected with a sliding rod on both sides, the sliding rod penetrates and slides in the fixed block, the top end of the two sliding rods is fixedly connected with a handle, and a spring is sleeved on the sliding rod, and the two ends of the spring are fixedly connected with the opposite surfaces of the fixed block and the clamping plate.

[0015] As a further scheme of the present application, the limiting assembly comprises a rubber sleeve, the rubber sleeve is installed on the side of the side plate away from the base, the rubber sleeve is provided with an air bag ring outside, the air bag ring is provided with anti-skid lines outside, and the side of the air bag ring close to the side plate is installed with a connecting pipe, one end of the connecting pipe penetrates the side plate and the base and is installed with a one-way valve and an exhaust valve, and the one-way valve is located above the exhaust valve.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] 1、The five supporting assemblies are pushed into the external auditory canal, so that the rubber sleeve in the limiting assembly can enter the concha cavity, the position of the adjusting ring is adjusted by operating the locking assembly, the hollow rods in the supporting assemblies can be expanded synchronously, the five hollow rods can contact the inner wall of the external auditory canal, the internal structure of the external auditory canal is not a regular circle, the hollow rods can rotate in the bearing when contacting the internal structure of the external auditory canal, thereby reducing the friction between the hollow rods and the inner wall of the external auditory canal, and the external auditory canal is protected, when the individual differences and growth changes of the external auditory canal are dynamically adjusted, the micro air pump is controlled to work to inflate the air box, when the air pressure in the air box increases, the gas can be introduced into the hollow rod through the breather hose, the end of the hollow rod is connected with the breather hose through the rotary joint, so that the conduction between the hollow rod and the breather hose is not affected during the rotation of the hollow rod, and the gas entering the hollow rod can extrude the rubber air rings, so that the rubber air rings can be inflated and contact the inner wall of the external auditory canal, the sensing module comprises a micro pressure sensor and a displacement sensor and is used for monitoring the pressure and deformation data in the external auditory canal in real time, so that the expansion state can be dynamically adjusted according to the individual differences and growth changes of the external auditory canal, the expansion effect is improved, and the external auditory canal is flexibly supported by the rubber air rings, so that the external auditory canal is not damaged.

[0018] 2. This invention pushes the support component into the external auditory canal, allowing the rubber sleeve to enter the concha cavity. An external pressurization mechanism connects to a one-way valve, and gas is introduced into the airbag ring through the one-way valve and connecting tube. This causes the airbag ring to expand and contact the inner wall of the concha cavity. The outer wall of the airbag ring has anti-slip textures, providing a certain degree of anti-slip effect and preventing the rubber sleeve from slipping out of the concha cavity, thus limiting the expansion support. When adjusting the air pressure of the airbag ring, because the one-way valve is located above the exhaust valve, opening the exhaust valve allows the gas in the airbag ring to be discharged through the exhaust valve via the connecting tube. This facilitates adjustment of the airbag ring's expansion size, making it suitable for limiting concha cavities of different sizes.

[0019] 3. When expanding the external auditory canal, this invention involves lifting the handle to move the locking plate upwards via two sliding rods, causing the teeth under the locking plate to disengage from the grooves outside the base. At this time, the fixing block, connecting block, and adjusting ring are in a free-moving state. Next, pushing the handle forward causes the handle to deflect the connecting block and adjusting ring via the fixing block. The fixing post on one side of the base can slide in the sliding hole in the adjusting ring, which serves to support and limit the adjusting ring, improving the stability of the adjusting ring's rotation. During the rotation of the adjusting ring, it can pull multiple connecting rods to deflect, allowing the hollow rods in the support assembly to unfold synchronously, thereby providing multi-directional support for the external auditory canal and preventing long-term stenosis or recurrence of the external auditory canal.

[0020] 4. In this invention, when removing the expansion bracket from the external auditory canal, the handle is lifted so that the two sliding rods drive the retaining plate to disengage from the tooth groove. The handle is then pushed in the opposite direction, causing the handle to deflect the connecting block and the adjusting ring through the fixing block. The adjusting ring can push the deflection frame through the connecting rod, causing multiple deflection frames to drive multiple hollow rods to move synchronously towards the center of the base, so that the hollow rods can move away from the external auditory canal. Then, the exhaust valve outside the connecting tube is opened, allowing the gas in the airbag to be discharged through the connecting tube from the exhaust valve, so that the airbag can return to its original shape and no longer be tightly attached to the concha cavity. This makes the entire expansion bracket loose in the patient's ear, thus facilitating the removal of the bracket. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments 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 these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0023] Figure 2 This is a rear view structural schematic diagram of the present invention;

[0024] Figure 3 Structure diagram of the adjusting ring of the present application;

[0025] Figure 4 Structure diagram of the deflection assembly of the present application;

[0026] Figure 5 Structure diagram of the present application Figure 4 Structure diagram of the present application

[0027] Figure 6 Structure diagram of the present application

[0028] Figure 7 Structure diagram of the dynamic adjusting assembly of the present application;

[0029] Figure 8 Structure diagram of the locking assembly of the present application.

[0030] In the drawings, the components represented by the respective reference numbers are listed as follows:

[0031] 1, base; 2, side plate; 3, adjusting ring; 4, deflection assembly; 401, deflection frame; 402, connecting rod; 5, support assembly; 501, hollow rod; 502, bearing; 503, sensing module; 504, rubber air ring; 505, rotary joint; 6, dynamic adjusting assembly; 601, air box; 602, air hose; 603, micro air pump; 7, locking assembly; 701, fixed block; 702, connecting block; 703, sliding block; 704, sliding rod; 705, clamping plate; 706, spring; 707, handle; 8, slide; 9, tooth groove; 10, limiting assembly; 101, rubber sleeve; 102, air bag ring; 103, connecting pipe; 104, one-way valve; 105, exhaust valve; 11, remote control module; 12, sliding hole; 13, fixed column. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0033] Please refer to Figures 1-8 The present application provides a technical solution:

[0034] The utility model provides an ear canal postoperative anti-stenosis expansion support, including base 1, one side of base 1 is equipped with side plate 2, is equipped with adjusting ring 3 between side plate 2 and base 1, five slide holes 12 are formed in adjusting ring 3, fixed column 13 is slidably connected in slide hole 12, and the both ends of fixed column 13 are fixedly connected on the opposite side of base 1 and side plate 2, and fixed column 13 can slide in slide hole 12 in adjusting ring 3, and the function of supporting and limiting adjusting ring 3 is played, and the stability of the rotation of adjusting ring 3 is improved.

[0035] The side of base 1 close to side plate 2 is equipped with five deflection assemblies 4, the end of deflection assembly 4 is rotatably connected on base 1 through pin shaft, and deflection assembly 4 is located between base 1 and side plate 2, and the end of five deflection assemblies 4 close to each other is equipped with support assembly 5, and support assembly 5 penetrates the middle part of side plate 2.

[0036] Among them, deflection assembly 4 includes deflection frame 401 and connecting rod 402, deflection frame 401 is roughly triangular, and the first end of outside is rotatably connected on the side of base 1 through pin shaft, one end of connecting rod 402 is rotatably connected on the second end of deflection frame 401, and the end of connecting rod 402 away from deflection frame 401 is rotatably connected on the side of base 1 through pin shaft, and connecting rod 402 is inclinedly arranged on base 1.

[0037] Among them, support assembly 5 is installed on the third end of deflection frame 401 close to the center of base 1, and support assembly 5 includes hollow rod 501, bearing 502 is sleeved on the outer wall of hollow rod 501, bearing 502 is clamped on the third end of deflection frame 401 close to the center of side plate 2, sensing module 503 is installed on the side of the outer wall of hollow rod 501 close to bearing 502, and sensing module 503 includes micro pressure sensor and displacement sensor and is used for real-time monitoring the pressure and deformation data in the external auditory canal.

[0038] Adjusting ring 3 can pull multiple connecting rods 402 to deflect in the process of rotating, because the end of connecting rod 402 is rotatably connected with deflection frame 401, connecting rod 402 can pull hollow rod 501 to deflect through deflection frame 401, so that hollow rod 501 can be expanded synchronously and contact with the external auditory canal, and the expansion effect on the external auditory canal is improved by supporting the external auditory canal at multiple points. Because the inside of the external auditory canal is not regular circular, multiple hollow rods 501 contact the inside of the external auditory canal in sequence in the process of moving, and hollow rod 501 can rotate in bearing 502 when contacting the inside of the external auditory canal, thereby reducing the friction between hollow rod 501 and the inner wall of the external auditory canal, and the protection effect on the external auditory canal is played.

[0039] As a further scheme of the present application, the other end of the five supporting assemblies 5 penetrates the middle part of the base 1 and is provided with a dynamic adjustment assembly 6, which is installed on the side of the base 1 away from the side plate 2. Specifically, the hollow rod 501 is externally provided with a plurality of rubber air springs 504, which are in communication with the inside of the hollow rod 501, and the end of the hollow rod 501 penetrating the bearing 502 is provided with a rotary joint 505, and the end of the dynamic adjustment assembly 6 is connected with the rotary joint 505.

[0040] The dynamic adjustment assembly 6 comprises an air box 601 installed on the side of the base 1 away from the side plate 2, the bottom of the air box 601 is communicated with a micro air pump 603 installed on the side of the base 1, the air box 601 is designed in a ring shape and the inner wall is connected with five air hoses 602, the other end of the air hose 602 is communicated with the end of the rotary joint 505, and a remote control module 11 is installed on the side of the base 1, which comprises a master control chip and a Bluetooth communication module, supports connection with the mobile terminal of the doctor or nursing staff, and is used for adjusting the parameters of the dynamic adjustment assembly 6 and monitoring the use state. The end of the hollow rod 501 is connected with the air hose 602 through the rotary joint 505, so that the conduction work between the hollow rod 501 and the dynamic adjustment assembly 6 will not be affected during the rotation of the hollow rod 501; the external auditory canal is flexibly supported by the rubber air spring 504, which will not cause damage to the external auditory canal.

[0041] According to the individual differences and growth changes of the external auditory canal, the micro air pump 603 is controlled to work to inflate the inside of the air box 601, when the internal pressure of the air box 601 increases, the gas can be introduced into the hollow rod 501 through the air hose 602, after the gas enters the inside of the hollow rod 501, it can extrude a plurality of rubber air springs 504, so that the rubber air springs 504 can be inflated and contact with the inner wall of the external auditory canal, and the expansion state can be dynamically adjusted according to the individual differences and growth changes of the external auditory canal, and the expansion effect is improved.

[0042] As a further scheme of the present application, the top of the base 1 and the side plate 2 is provided with a locking assembly 7, the outer wall of the side plate 2 is provided with a slide 8, and the outer wall of the base 1 is provided with a plurality of tooth grooves 9, the locking assembly 7 is installed in the slide 8 and the tooth groove 9, and the middle part below the locking assembly 7 is fixed with the top of the adjustment ring 3.

[0043] The locking assembly 7 comprises a fixed block 701, the bottom of the fixed block 701 is fixedly connected with a connecting block 702, the bottom of the connecting block 702 is fixed with the adjusting ring 3, the two sides of the connecting block 702 are respectively provided with a clamping plate 705 and a sliding block 703, the sliding block 703 is slidingly connected in the slide 8, and the slide 8 is designed in a ring shape; the bottom of the clamping plate 705 is provided with a plurality of teeth, and the teeth are clamped in the tooth groove 9. The two sides of the top of the clamping plate 705 are fixedly connected with a sliding rod 704, the sliding rod 704 penetrates through the fixed block 701 and slides in the fixed block 701, the top ends of the two sliding rods 704 are fixedly connected with a handle 707, and the sliding rod 704 is sleeved with a spring 706, and the two ends of the spring 706 are fixedly connected with the opposite surfaces of the fixed block 701 and the clamping plate 705.

[0044] When the fixed block 701 moves, the sliding block 703 can slide in the ring-shaped slide 8, the slide 8 limits the sliding block 703, and the stability of the adjusting ring 3 driven to rotate by the connecting block 702 is improved. The two sliding rods 704 drive the clamping plate 705 to move upwards, so that the teeth under the clamping plate 705 are separated from the tooth groove 9 outside the base 1, at this time, the fixed block 701, the connecting block 702 and the adjusting ring 3 are in a free state, and the adjusting ring 3 is conveniently and flexibly adjusted. The spring 706 supports the clamping plate 705, so that the clamping plate 705 can drive the teeth at the bottom to be clamped into the tooth groove 9 outside the base 1, the clamping plate 705 is limited, the fixed block 701 cannot drive the adjusting ring 3 to rotate through the connecting block 702, and the position of the adjusting ring 3 and the hollow rod 501 is locked, thereby conveniently and stably supporting the external auditory canal.

[0045] As a further scheme of the application, the side plate 2 is provided with a limiting assembly 10 away from the base 1, and the end of the limiting assembly 10 penetrates through the side plate 2 and the base 1.

[0046] The limiting assembly 10 comprises a rubber sleeve 101, the rubber sleeve 101 is installed on the side of the side plate 2 away from the base 1, the rubber sleeve 101 is provided with an air bag ring 102, the air bag ring 102 is provided with anti-skid lines, and the side of the air bag ring 102 close to the side plate 2 is provided with a connecting pipe 103, one end of the connecting pipe 103 penetrates through the side plate 2 and the base 1 and is provided with a one-way valve 104 and an exhaust valve 105, and the one-way valve 104 is located above the exhaust valve 105.

[0047] The gas is introduced into the air bag ring 102 through the one-way valve 104 and the connecting pipe 103, so that the air bag ring 102 is inflated and in contact with the inner wall of the concha cavity. When the pressure charging mechanism is removed, the exhaust valve 105 is closed, so that the gas in the air bag ring 102 cannot be discharged from the exhaust valve 105 through the connecting pipe 103, and the one-way valve 104 can only guide the gas into the connecting pipe 103. When the inflation of the one-way valve 104 is stopped, the one-way valve 104 is closed, so that the one-way valve 104, the exhaust valve 105 and the connecting pipe 103 are in a closed state, the one-way valve 104 can prevent the gas in the air bag ring 102 from being discharged, and the air bag ring 102 is in an inflated state. The anti-skid pattern on the outer wall of the air bag ring 102 plays a certain anti-skid role, preventing the rubber sleeve 101 from slipping out of the concha cavity.

[0048] When the air pressure of the air bag ring 102 is adjusted, the one-way valve 104 is located above the exhaust valve 105. After the exhaust valve 105 is opened, the gas in the air bag ring 102 can be discharged from the exhaust valve 105 through the connecting pipe 103, and the size of the air bag ring 102 can be adjusted conveniently, so that it is suitable for the limiting work of different sizes of concha cavities.

[0049] From the above, it is known that:

[0050] After the gas enters the hollow rod 501, it can press the plurality of rubber air rings 504, so that the rubber air rings 504 can be inflated and in contact with the inner wall of the external auditory canal. Because the sensing module 503 includes a micro pressure sensor and a displacement sensor and is used for real-time monitoring of the pressure and deformation data in the external auditory canal, the expansion state can be dynamically adjusted according to the individual differences and growth changes of the external auditory canal, and the expansion effect is improved;

[0051] The gas is introduced into the air bag ring 102 through the one-way valve 104 and the connecting pipe 103, so that the air bag ring 102 is inflated and in contact with the inner wall of the concha cavity. Because the air bag ring 102 is additionally provided with anti-skid patterns on the outer wall, a certain anti-skid effect is achieved, preventing the rubber sleeve 101 from slipping out of the concha cavity, and playing a role in limiting the expansion support;

[0052] When the air pressure of the air bag ring 102 is adjusted, the one-way valve 104 is located above the exhaust valve 105. After the exhaust valve 105 is opened, the gas in the air bag ring 102 can be discharged from the exhaust valve 105 through the connecting pipe 103, and the size of the air bag ring 102 can be adjusted conveniently, so that it is suitable for the limiting work of different sizes of concha cavities;

[0053] During the rotation of the adjusting ring 3, the plurality of connecting rods 402 can be pulled to deflect, so that the hollow rod 501 in the supporting assembly 5 can be expanded synchronously, and the external auditory canal can be supported in multiple directions, preventing the external auditory canal from being long-term narrow or recurring.

[0054] The working principle of the present application is as follows:

[0055] By pushing the five supporting assemblies 5 into the external auditory canal, the rubber sleeve 101 in the limiting assembly 10 can enter the inside of the concha cavity. When the limiting assembly 10 is used to limit the expansion stent, the one-way valve 104 is connected by the external pressure charging mechanism, and the gas is introduced into the air bag ring 102 through the one-way valve 104 and the connecting pipe 103, so that the air bag ring 102 expands and contacts with the inner wall of the concha cavity. Because the outer wall of the air bag ring 102 is additionally provided with anti-skid lines, it has a certain anti-skid effect, preventing the rubber sleeve 101 from slipping out of the concha cavity, and playing a limiting role on the expansion stent. When adjusting the air pressure of the air bag ring 102, because the one-way valve 104 is located above the exhaust valve 105, after opening the exhaust valve 105, the gas in the air bag ring 102 can be discharged from the exhaust valve 105 through the connecting pipe 103, and the expansion size of the air bag ring 102 can be adjusted to adapt to the limiting work of different sizes of concha cavities;

[0056] When expanding the external auditory canal, lifting the handle 707 drives the clamping plate 705 to move upwards through the two sliding rods 704, so that the teeth under the clamping plate 705 are separated from the tooth groove 9 outside the base 1. At this time, the fixed block 701, the connecting block 702 and the adjusting ring 3 are in a free state. Then, the handle 707 is pushed forward, so that the handle 707 drives the connecting block 702 and the adjusting ring 3 to deflect through the fixed block 701. The fixed column 13 on one side of the base 1 can slide in the sliding hole 12 in the adjusting ring 3, which plays a supporting and limiting role on the adjusting ring 3, improves the stability of the rotation of the adjusting ring 3, and pulls the plurality of connecting rods 402 to deflect in the process of rotation of the adjusting ring 3. Because the end of the connecting rod 402 is rotationally connected with the deflection frame 401, the connecting rod 402 can pull the supporting assembly 5 to deflect through the deflection frame 401, so that the hollow rod 501 in the supporting assembly 5 can be expanded synchronously, and the five hollow rods 501 can contact with the inner wall of the external auditory canal. Because the inside of the external auditory canal is not a regular circle, the plurality of hollow rods 501 contact with the inside of the external auditory canal in sequence in the process of movement, and the hollow rod 501 can rotate in the bearing 502 when contacting with the inside of the external auditory canal, thereby reducing the friction between the hollow rod 501 and the inner wall of the external auditory canal, and playing a protective role on the external auditory canal;

[0057] After the adjustment of the hollow rod 501 is completed, the handle 707 is loosened, the clamping plate 705 is supported by the elastic force of the spring 706, the clamping plate 705 can drive the bottom teeth to be clamped into the tooth groove 9 outside the base 1, the clamping plate 705 is limited, the fixing block 701 cannot drive the adjusting ring 3 to rotate through the connecting block 702, and the position of the adjusting ring 3 and the hollow rod 501 is locked, so that the external auditory canal is stably supported, and the external auditory canal is prevented from being long-term narrow or recurring. In addition, when the dynamic adjustment is performed according to the individual differences and growth changes of the external auditory canal, the micro air pump 603 is controlled to work to inflate the air box 601, when the air pressure in the air box 601 increases, the gas can be introduced into the hollow rod 501 through the breather hose 602. Because the end of the hollow rod 501 is connected with the breather hose 602 through the rotary joint 505, the conduction between the hollow rod 501 and the breather hose 602 will not be affected during the rotation of the hollow rod 501. After the gas enters the hollow rod 501, the plurality of rubber air rings 504 can be extruded, so that the rubber air rings 504 can be inflated and contact the inner wall of the external auditory canal. Because the sensing module 503 includes a micro pressure sensor and a displacement sensor and is used for monitoring the pressure and deformation data in the external auditory canal in real time, the expansion state can be dynamically adjusted according to the individual differences and growth changes of the external auditory canal, the expansion effect is improved, and the external auditory canal is flexibly supported by the rubber air ring 504, so that the external auditory canal is not damaged;

[0058] When the expansion support is taken out of the external auditory canal, the handle 707 is lifted to drive the clamping plate 705 to be separated from the tooth groove 9 through the two sliding rods 704, the handle 707 is reversely pushed to drive the connecting block 702 and the adjusting ring 3 to be deflected through the fixing block 701, the adjusting ring 3 can drive the deflection frame 401 to be pushed through the connecting rod 402, so that the plurality of hollow rods 501 can be driven to move close to the center of the base 1 synchronously, the hollow rod 501 can be away from the external auditory canal, the exhaust valve 105 outside the connecting pipe 103 is opened, the gas in the airbag ring 102 can be discharged from the exhaust valve 105 through the connecting pipe 103, the airbag ring 102 can restore the original state and not tightly adhere to the concha cavity, so that the entire expansion support is in a loose state at the patient's ear, and then the support is taken out.

Claims

1. An expansion stent for preventing stenosis after external auditory canal surgery, comprising a base (1), characterized in that: A base plate is provided on one side of the base (1), and an adjusting ring (3) is provided between the base plate and the base (1). Five sliding holes (12) are provided on the adjusting ring (3), and a fixed column (13) is slidably connected in the sliding hole (12). The two ends of the fixed column (13) are fixedly connected to the opposite surfaces of the base (1) and the side plate (2). Five deflection components (4) are provided on the side of the base (1) near the side plate (2). The ends of the deflection components (4) are rotatably connected to the base (1) by a pin, and the deflection components (4) are located between the base (1) and the side plate (2). Support components (5) are installed at the ends of the five deflection components (4) that are close to each other. The support components (5) penetrate through the middle of the side plate (2), and the other ends of the five support components (5) are connected to the side plate (2). The end of the base (1) is through the middle and a dynamic adjustment component (6) is installed. The dynamic adjustment component (6) is installed on the side of the base (1) away from the side plate (2). A locking component (7) is installed on the top of the base (1) and the side plate (2). A slide (8) is opened on the outer wall of the side plate (2). Several toothed grooves (9) are opened on the outside of the base (1). The locking component (7) is installed in the slide (8) and the toothed grooves (9). The middle part of the locking component (7) is fixed to the top of the adjustment ring (3). A limit component (10) is installed on the side of the side plate (2) away from the base (1). The end of the limit component (10) penetrates the side plate (2) and the base (1). A remote control module (11) is installed on one side of the base (1). The deflection assembly (4) includes a deflection frame (401) and a connecting rod (402). The deflection frame (401) is approximately triangular, and its outer first end is rotatably connected to one side of the base (1) via a pin. One end of the connecting rod (402) is rotatably connected to the second end of the deflection frame (401), and the end of the connecting rod (402) away from the deflection frame (401) is rotatably connected to one side of the base (1) via a pin. The connecting rod (402) is inclined on the base (1). The support assembly (5) is installed at the third end of the deflection frame (401) near the center of the base (1). The support assembly (5) includes a hollow rod (501), a bearing (502) is sleeved on the hollow rod (501), the bearing (502) is snapped into the third end of the deflection frame (401) near the center of the side plate (2), and a sensing module (503) is installed on the outer wall of the hollow rod (501) near the bearing (502). The sensing module (503) includes a miniature pressure sensor and a displacement sensor and is used to monitor the pressure and deformation data in the external auditory canal in real time. The hollow rod (501) is provided with several rubber air rings (504), the rubber air rings (504) are connected to the interior of the hollow rod (501), and a rotary joint (505) is installed at one end of the hollow rod (501) that passes through the bearing (502). The end of the dynamic adjustment component (6) is connected to the rotary joint (505). The dynamic adjustment component (6) includes an air box (601), which is installed on the side of the base (1) away from the side plate (2). The bottom of the air box (601) is connected to a micro air pump (603), which is installed on one side of the base (1). The air box (601) is annular and has five ventilation hoses (602) connected to its inner wall. The other end of the ventilation hoses (602) is connected to the end of the support component (5).

2. The dilation stent for preventing stenosis after external auditory canal surgery according to claim 1, characterized in that: The locking component (7) includes a fixing block (701), and a connecting block (702) is fixedly connected to the bottom of the fixing block (701). The bottom of the connecting block (702) is fixed to the adjusting ring (3). A card plate (705) and a slider (703) are respectively provided on both sides of the connecting block (702). The slider (703) is slidably connected in the slide (8), and the slide (8) is a ring design.

3. The dilation stent for preventing stenosis after external auditory canal surgery according to claim 2, characterized in that: The bottom of the card plate (705) is provided with several teeth and is engaged in the tooth groove (9). The top two sides of the card plate (705) are respectively fixedly connected to the slide rods (704). The slide rods (704) slide through the fixed block (701). The top ends of the two slide rods (704) are fixedly connected to the handles (707). The slide rods (704) are fitted with springs (706). The two ends of the springs (706) are respectively fixedly connected to the opposite surfaces of the fixed block (701) and the card plate (705).

4. The dilation stent for preventing stenosis after external auditory canal surgery according to claim 1, characterized in that: The limiting component (10) includes a rubber sleeve (101), which is installed on the side of the side plate (2) away from the base (1). An airbag ring (102) is provided outside the rubber sleeve (101). The airbag ring (102) is provided with anti-slip texture. A connecting pipe (103) is installed on the side of the airbag ring (102) close to the side plate (2). One end of the connecting pipe (103) passes through the side plate (2) and the base (1) and is equipped with a one-way valve (104) and an exhaust valve (105). The one-way valve (104) is located above the exhaust valve (105).

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