Flexible supporting structure and trachea cannula with same

Abstract

The invention relates to the technical field of trachea cannulas, in particular to a flexible supporting structure and a trachea cannula with the flexible supporting structure, the flexible supporting structure comprises a framework, an air cavity, a skin, an oxygen supply tube, an air supply chamber and an oxygen outlet tube, the skin is driven by inflation of the framework to expand and be clamped and fixed, and meanwhile, the skin is extruded and attached to the inner wall of a trachea due to air pressure to achieve uniform attachment; the support structure is high in flexibility, high in biocompatibility and small in extrusion foreign body sensation, the oxygen supply tube is arranged in a telescopic mode and is wrapped by the framework and the skin, the possibility that the tip end and the tube body stabs the trachea wall in the insertion process is reduced, and the use safety is improved; the trachea tail end mucus secretions are synchronously removed and collected, the oxygen deficit condition caused by the fact that oxygen cannot be supplied in the intubation process is avoided, the clamping teeth can adjust the limiting effect along with the position change of the oxygen outlet pipe, and the situation that the temporarily adsorbed and stored mucus rebounds and flows out due to the fact that the oxygen outlet pipe rebounds after stretching out is prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tracheal intubation, in particular to a flexible support structure and a tracheal tube with the same. BACKGROUND

[0002] In emergency, by accurately placing the catheter through the glottis into the trachea, a safe and effective airway passage can be quickly established, which creates ideal conditions for airway management, ventilation and oxygen supply, respiratory suction and prevention of gastric content regurgitation and aspiration, etc. However, during use, the patient may have involuntary limb movements, coughing and other conditions. If the tracheal tube is not fixed, the catheter is prone to displacement or even dislocation. Meanwhile, a stable tracheal tube position is the basis for ensuring the effect of mechanical ventilation. Only when the tracheal tube is fixed well, the gas delivered by the breathing machine can accurately enter the lungs to maintain normal gas exchange. Finally, the fixed tracheal tube can better isolate the airway from the digestive tract, reduce the risk of gastric content regurgitation into the airway causing aspiration, protect the respiratory tract from foreign matter, and reduce the probability of complications such as lung infection.

[0003] The existing Chinese patent application with publication number CN108498929A discloses a tracheal tube, which comprises a main catheter provided with a ventilation channel for ventilation, and a device channel, a cleaning channel and a suction channel located at the periphery of the ventilation channel respectively; a connecting head for connecting a breathing machine and sealingly connected with the end of the main catheter, the connecting head is provided with an air inlet channel communicated with the ventilation channel; a first connecting pipe for inserting a device and communicated with the device channel, the end of the first connecting pipe is provided with a first sealing valve; a second connecting pipe communicated with the cleaning channel, the end of the second connecting pipe is provided with a second sealing valve; a third connecting pipe communicated with the suction channel, the end of the third connecting pipe is provided with a third sealing valve. The main catheter is provided with the ventilation channel, the device channel, the cleaning channel and the suction channel which are not communicated with each other, which can provide gas for emergency, perform microsurgery through the device channel, clean and suck out endocrine substances, and each item of emergency does not affect each other. Each channel is connected with an independent connecting pipe, which can be opened and used or closed when not in use. However, the above fixing method still adopts the air bag type fixing method. After being filled with air, the air bag long-term compresses the airway, which causes strong foreign body sensation and compression sensation due to large contact area, resulting in tissue damage and reducing patient comfort.

[0004] During the insertion of the tracheal tube, if the posture is incorrect or the operation is improper, the end of the trachea may touch the tracheal wall, causing direct injury and tissue damage. Therefore, the tip of the tracheal end needs to be isolated and protected, so as to avoid airway damage even in the case of misoperation. SUMMARY

[0005] In view of the problems existing in the prior art, the present application is proposed.

[0006] To solve the above technical problems, the present application provides the following technical solutions: a flexible support structure, at least two skeletons arranged in a circumferential array, each of the skeletons is internally provided with a hollow air cavity, and the skeleton is inflated by injecting air into the air cavity;

[0007] a skin which is attached to the outer wall of the skeleton, the skin moves and stretches to form an oval spherical shape along with the expansion of the skeleton, and the skin is extruded and attached to the tracheal wall when the inner surface of the skin is filled with gas.

[0008] As a preferred scheme of the flexible support structure of the present application, wherein: the skeleton is a semi-elliptical structure, and a plurality of skeletons are combined by splicing to form a complete elliptical profile; the skin is in a sealed state covering the outer wall of each skeleton to form a closed space; and a gas permeable hole is provided on one side of the outer wall of the skin for balancing the air pressure inside and outside the flexible support structure.

[0009] The present application also discloses a tracheal tube, and the specific technical scheme comprises: an oxygen supply tube, the outer wall of the oxygen supply tube is simultaneously and sealingly connected with each of the skeletons, and the outer wall of the oxygen supply tube is attached to the skin to form a sealed cavity; a gas supply chamber, the gas supply chamber is arranged on the oxygen supply tube, and each of the air cavities is respectively communicated with the gas supply chamber through an independent channel; and an oxygen outlet tube, the oxygen outlet tube is arranged in a slidable and telescopic manner at one end of the oxygen supply tube close to an oxygen outlet.

[0010] As a preferred scheme of the tracheal tube of the present application, wherein: in an initial state where the air cavities are not inflated, the skeletons and the skin jointly enclose a semi-closed space, and the oxygen outlet tube is covered in the semi-closed space; when the air cavities are inflated, the skeletons and the skin are pushed outward under the action of air pressure, and simultaneously push the oxygen outlet tube to slide outward along the axial direction of the oxygen supply tube.

[0011] As a preferred scheme of the tracheal tube of the present application, wherein: a receiving cavity is formed in the inside of the oxygen supply tube, the oxygen outlet tube is slidably arranged in the receiving cavity, and a sealing pad is arranged between the end of the oxygen supply tube and the oxygen outlet tube.

[0012] As a preferred scheme of the tracheal tube of the present application, wherein: a separation ring is arranged at one end of the oxygen outlet tube which is slid into the oxygen supply tube, the separation ring is used to separate the receiving cavity into two independent spaces, a first elastic member is arranged between the separation ring and the sealing pad, and the first elastic member is used to control the sliding of the oxygen outlet tube.

[0013] As a preferred scheme of the tracheal tube of the present application, wherein: a first air passage is formed through the oxygen supply tube, two ends of the first air passage are respectively connected with two ends of the oxygen outlet tube, a second air passage is formed in the sealing pad, and the second air passage is communicated with both sides of the sealing pad;

[0014] The accommodating cavity is provided with a limiting slot near one side of the outer wall of the oxygen supply pipe, and a limiting tooth is arranged in the limiting slot in an array, the outer wall of the separation ring is provided with a limiting block, the limiting block is slidingly arranged in the limiting slot, and a clamping tooth is slidingly arranged on the limiting block.

[0015] As a preferred scheme of the tracheal tube, the limiting tooth is a rectangular hole, a rotating cavity is arranged in the limiting block, a rotating column is coaxially arranged at the lower end of the clamping tooth, and a reciprocating groove is arranged on the outer wall of the rotating column.

[0016] As a preferred scheme of the tracheal tube, a movable rod is vertically and slidingly arranged on the inner wall of the rotating cavity, a sliding column is arranged on the movable rod, and the sliding column is slidingly and connectingly arranged in the reciprocating groove.

[0017] As a preferred scheme of the tracheal tube, a switch rod is arranged on the end surface of the movable rod, a balance spring is arranged between the movable rod and the bottom surface of the rotating cavity, a limiting hoop is further fixedly arranged on the inner wall of the rotating cavity, the rotating column is rotatably arranged on the limiting hoop, the switch rod vertically penetrates the separation ring and is provided with a fan plate.

[0018] The tracheal tube has the following advantages: the skin is inflated and clamped and fixed by the inflation of the framework, the framework is preliminarily limited in contact, the skin is pressed and attached to the inner wall of the trachea due to the air pressure, uniform attachment is achieved, the damage to the tracheal wall is smaller, the support structure has high softness and high biocompatibility, the extrusion foreign body sensation caused is smaller, the possibility of tissue damage is reduced, the oxygen supply pipe is telescopic and is covered by the framework and the skin, the possibility of the sharp end and the pipe body of the oxygen supply pipe scratching the tracheal wall during insertion is reduced, the use safety is improved, the mucus secretion at the end of the trachea is synchronously cleaned and collected during the telescoping of the oxygen outlet pipe, and the hypoxia caused by the inability to supply oxygen during intubation is avoided, the clamping tooth adjusts the limiting effect according to the position change of the oxygen outlet pipe, and the oxygen outlet pipe is prevented from rebounding after being stretched out, so that the temporarily adsorbed mucus is prevented from rebounding and flowing out. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creating labor. Among them:

[0020] Figure 1 It is an internal structure diagram of the skin in the embodiment 2 of the present application.

[0021] Figure 2 It is an internal structure diagram of the skin in the embodiment 1 of the present application.

[0022] Figure 3 Figure 1 is a schematic diagram of the expanded state of a flexible support structure according to an embodiment of the present application;

[0023] Figure 4 Figure 2 is a schematic diagram of the internal structure of the contracted state of a flexible support structure according to an embodiment of the present application;

[0024] Figure 5 Figure 3 is a schematic diagram of the expanded state of a flexible support structure according to another embodiment of the present application;

[0025] Figure 6 Figure 4 is a schematic diagram of the structure of a tracheal tube according to the present application;

[0026] Figure 7 Figure 5 is a schematic diagram of the internal structure of the accommodating cavity according to the present application;

[0027] Figure 8 Figure 6 is a schematic diagram of the broken view of the oxygen supply tube according to the present application;

[0028] Figure 9 Figure 7 is a schematic diagram of the region structure of the limiting block according to the present application;

[0029] Figure 10 Figure 8 is a schematic diagram of the cooperation structure of the limiting tooth and the limiting block according to the present application;

[0030] Figure 11 Figure 9 is a schematic diagram of the reciprocating groove structure according to the present application.

[0031] Reference signs: 100, framework; 101, air cavity; 102, skin; 201, air permeable hole;

[0032] 300, oxygen supply tube; 301, gas supply chamber; 302, oxygen outlet tube; 3001, accommodating cavity; 3003, partition ring; 3004, first elastic member; 3005, first air passage; 3006, second air passage; 3007, limiting groove; 3008, limiting tooth; 3009, limiting block; 3011, clamping tooth; 3012, rotating cavity; 3013, reciprocating groove; 3014, movable rod; 3015, sliding column; 3016, switching rod; 3017, fan plate; 3018, balance spring; 3019, limiting hoop; 3021, rotating column. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0034] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0035] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0036] Example 1

[0037] Reference Figures 1-6 This is the first embodiment of the present invention. This embodiment provides a flexible support structure. The inflation of the skeleton 100 causes the skin 102 to expand and lock in place. The skeleton 100 provides initial positioning, and the skin 102 is squeezed and adhered to the inner wall of the trachea due to air pressure, achieving uniform coverage. This results in less damage to the tracheal wall, high flexibility of the support structure, high biocompatibility, less foreign body sensation caused by compression, and reduced possibility of tissue damage.

[0038] Specifically, a flexible support structure includes:

[0039] At least two skeletons 100 arranged in a circular array, each skeleton 100 having a hollow air cavity 101 inside, the skeleton 100 expanding by injecting air into the air cavity 101;

[0040] The skin 102 is attached to the outer wall of the skeleton 100. The skin 102 moves as the skeleton 100 expands and stretches to form an elliptical sphere. When the inner surface of the skin 102 is filled with gas, it is squeezed and attached to the tracheal wall.

[0041] Among them, such as Figure 1 As shown, the more skeletons 100 there are, the better the support effect, but the pressure on the inner wall of the trachea will also increase accordingly. The fewer skeletons 100 there are, the less pressure on the inner wall of the trachea will be, but the support effect will also be reduced, the coverage effect on the trachea will also be reduced, and it is easy to cause misalignment and slippage. The optimal number of skeletons 100 is 5-8.

[0042] Even better, in terms of materials, the frame 100 is preferably made of medical-grade polyurethane material, which ensures that it is not easy to break during the inflation process and that the frame 100 maintains a stable structure and performance after multiple inflations and deflations; at the same time, its biocompatibility will not cause immune rejection in the human body, reduce the foreign body sensation when it fits the trachea, and improve patient comfort.

[0043] Preferably, as shown in Figure 3 each skeleton 100 is arranged in an equidistant circumferential array around the center, ensuring uniform and stable support force when inflated, when air is injected into the air cavity 101, the volume of the air cavity 101 increases due to the filling of the gas, thereby expanding the skeleton 100, and the expansion of the structure is achieved by inflation, ensuring the uniformity and stability of the support, and compared with the existing airbag, which is completely attached to the inner wall of the trachea, the foreign body sensation and compression sensation are reduced, and the possibility of mucosal damage caused by long-term compression is reduced.

[0044] More preferably, the material of the skin 102 is selected from medical silicone with good flexibility and ductile elasticity, and in this technical solution, the outer diameter of the elliptical spherical shape is attached to the wall of the patient's airway, which can better fit the contour of the supported part and more evenly distribute the pressure, avoiding damage to the tissue caused by excessive local pressure, and can effectively prevent the invasion of surrounding substances, playing a role similar to the airbag of the tracheal tube in preventing aspiration of secretions.

[0045] Further, as shown in Figure 4 the skeleton 100 has two ends, and the outer diameter of the right end is larger than that of the left end; and the skeleton 100 is arc-shaped, and the outer diameter size gradually changes from the end with a larger outer diameter to the end with a smaller outer diameter, and the right end of each skeleton 100 is connected to each other, and the skin 102 has elasticity.

[0046] As shown in Figure 4 each skeleton 100 is arranged in a petal shape, and the right end with a larger outer diameter is connected to each other and the air cavities 101 in it are connected to each other, thereby ensuring that the expansion speed of each skeleton 100 is consistent, and further ensuring that the skin 102 is evenly stretched;

[0047] At the same time, as shown in Figure 2 after the skeleton 100 is inflated, the end with a smaller outer diameter, i.e. Figure 2 the right end, has an arc close to 0°, ensuring a smoother contact surface with the inner wall of the trachea, reducing the foreign body sensation.

[0048] At the same time, as shown in Figure 2 since the position where the skeleton 100 actually contacts the tracheal wall is the end with a smaller outer diameter, i.e. Figure 2 the right end, which has a relatively flat angle and a small area, and the skeleton 100 is isolated and buffered by the skin 102, the extrusion force on the inner wall is very small, so compared with the conventional inflatable airbag, the contact area is smaller and the damage to the tracheal wall is smaller.

[0049] More preferably, as shown in Figure 6As shown, this flexible support structure is used to fix the oxygen supply tube 300. The oxygen supply tube 300 is inserted from the end with the larger outer diameter of the skeleton 100, that is, the right end. The trachea and each skeleton 100 are connected in a closed manner to prevent gas backflow and also to prevent the mucus above from falling and blocking the bronchus. The oxygen supplied by the oxygen supply tube 300 flows out from the end with the smaller outer diameter of the skeleton 100, that is, the left end. At the same time, the air pressure increases, pushing the skin 102 to adhere to the surface of the trachea. Since the thickness of the skin 102 is much lower than that of conventional airbags and it is highly flexible and biocompatible, the resulting squeezing foreign body sensation is also smaller, and the possibility of tissue damage is also reduced.

[0050] Example 2

[0051] Reference Figures 1-5 This is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but the difference is that the skeleton 100 is a half-ellipse shape, and the skeletons 100 are assembled into a complete ellipse. The skin 102 is provided with ventilation holes 201 to further increase the contact area of ​​the skin 102 and prevent misalignment and sliding.

[0052] Specifically, the skeleton 100 has a semi-elliptical structure, and multiple skeletons 100 are spliced ​​together to form a complete elliptical outline; the skin 102 covers the outer wall of each skeleton 100 in a sealed state to form a closed space; a vent 201 is provided on one side of the outer wall of the skin 102 to balance the air pressure inside and outside the flexible support structure, such as... Figure 5 As shown, in this embodiment, the skin 102 is in Figure 5 There is a vent 201 on the lower right side of the middle.

[0053] Among them, such as Figure 6 As shown, the oxygen supply tube 300 extends along the axis of the flexible support structure and penetrates to the outside. The vent 201 is opened at the oxygen outlet position in the oxygen supply tube 300. The skin 102 is first supported by the expanded skeleton 100 to form its outline. Then, some of the backflowing gas enters the interior of the flexible support structure through the vent 201 and pushes the skin 102 to continue to expand until it fits against the inner wall of the trachea. Because the skin 102 is very thin, the contact area between the skin 102 and the inner wall of the trachea is increased, preventing misalignment and slippage. Therefore, the pressure on the airway is smaller, and the damage to the patient is less.

[0054] Example 3

[0055] Reference Figures 1-11 This is the third embodiment of the present invention. This embodiment provides a tracheal intubation tube, including the above-mentioned flexible support structure. The oxygen supply tube 300 is telescopically configured and is covered by the skeleton 100 and the skin 102, which reduces the possibility of the tip and tube body puncturing the tracheal wall during insertion and improves the safety of use.

[0056] Specifically, an endotracheal intubation device includes:

[0057] The oxygen supply pipe 300 has its outer wall sealed to each of the skeletons 100, and its outer wall is fitted with the skin 102 to form a sealed cavity.

[0058] The air supply chamber 301 is installed on the oxygen supply pipe 300, and each air chamber 101 is connected to the air supply chamber 301 through an independent channel.

[0059] Oxygen outlet pipe 302 is installed in a sliding and telescopic manner at one end of oxygen supply pipe 300 near the oxygen outlet.

[0060] In the initial state where the air chamber 101 is not inflated, the skeleton 100 and the skin 102 together form a semi-enclosed space, and the oxygen outlet pipe 302 is covered in the semi-enclosed space. When the air chamber 101 is inflated, the skeleton 100 and the skin 102 are pushed outward under the action of air pressure, and at the same time, the oxygen outlet pipe 302 is pushed outward along the axis of the oxygen supply pipe 300.

[0061] Among them, such as Figure 4 As shown, when the skeleton 100 and the skin 102 are in the contracted state, they completely surround the end of the oxygen supply tube 300, thereby preventing the tip of the oxygen delivery tube 302 from touching the airway and causing damage when the endotracheal tube is inserted into the airway. The skeleton 100 and the skin 102 are very soft when not inflated, so even if they touch the airway, they will not cause damage. At the same time, they can also act as a buffer layer, so even if the oxygen delivery tube 302 enters the airway in an off-center position, it can also cushion and prevent damage to the airway membrane.

[0062] Better, such as Figure 6 As shown, during the insertion process, the tip of the oxygen outlet tube 302 on the lower left side will extend and retract completely into the oxygen supply tube 300. The oxygen supply tube 300 is then covered by the skeleton 100 and the skin 102, minimizing the possibility of the tip of the oxygen outlet tube 302 puncturing the inner wall of the airway.

[0063] Preferably, in this embodiment, the oxygen outlet tube 302 is controlled by an air pump to slide in and out of the oxygen supply tube 300. When not inflated, the oxygen outlet tube 302 falls completely into the oxygen supply tube 300. When inflated, it slides out automatically. At the same time, even when the oxygen outlet tube 302 slides to its maximum stroke, it is still within the space covered by the skeleton 100 and the skin 102.

[0064] When in use, first insert the endotracheal tube normally. During this process, because the tip of the oxygen delivery tube 302 is double-protected, the pressure and scratches on the inner wall of the trachea are reduced to the greatest extent, and the foreign body sensation is reduced. After insertion, the air pump inflates the tube, causing the frame 100 and the skin 102 to extend and fix the endotracheal tube. At the same time, the oxygen delivery tube 302 slides outward from the oxygen supply tube 300 to supply oxygen.

[0065] Example 4

[0066] refer to Figures 1-11 This is the fourth embodiment of the present invention, which is based on embodiment 3. The difference is that during the extension and retraction of the oxygen supply tube 302, the mucus secretions at the end of the trachea are cleared and collected simultaneously, and the hypoxia caused by the inability to supply oxygen during intubation is avoided.

[0067] Specifically, the oxygen supply pipe 300 has a receiving cavity 3001 inside, the oxygen outlet pipe 302 is slidably disposed in the receiving cavity 3001, and a sealing gasket is provided between the end of the oxygen supply pipe 300 and the oxygen outlet pipe 302.

[0068] Among them, such as Figure 8 As shown, the oxygen supply pipe 300 is a hollow pipe that can contain gas, and an annular cavity, namely the receiving cavity 3001, is opened inside the pipe wall. The thickness between the receiving cavity 3001 and the outer wall of the oxygen supply pipe 300 is equal to the thickness between the receiving cavity 3001 and the inner wall of the oxygen supply pipe 300, thereby ensuring the structural strength of the oxygen supply pipe 300 itself.

[0069] Meanwhile, the oxygen outlet pipe 302 is slidably disposed within the receiving cavity 3001, and the thickness of the annular groove of the receiving cavity 3001 is twice the thickness of the wall of the oxygen outlet pipe 302. In use, the inner wall of the oxygen outlet pipe 302 is fitted against the side with the smaller diameter of the inner wall of the receiving cavity 3001. The outer wall of the oxygen outlet pipe 302, together with the receiving cavity 3001 and the sealing gasket, forms a sealed chamber. The sealing gasket is also an annular gasket and is fixedly disposed on the inner wall of the oxygen supply pipe 300.

[0070] Better, such as Figure 9 As shown, the oxygen outlet tube 302 slides into one end of the oxygen supply tube 300, that is... Figure 9 A partition ring 3003 is provided at one end of the left side of the middle receiving cavity 3001. The partition ring 3003 is used to divide the receiving cavity 3001 into two independent spaces. A first elastic element 3004 is provided between the partition ring 3003 and the sealing gasket. The first elastic element 3004 is used to control the sliding of the oxygen outlet pipe 302.

[0071] Among them, such as Figure 9 As shown, in this embodiment, the limiting block 3009 and the limiting tooth 3008 can slide together, and the gap between them is very small, so it can be approximated as a sealed and airtight seal (even if there is leakage, the amount of air is very small and can be ignored compared to the entire receiving cavity 3001). At the same time, the limiting block 3009 and the limiting tooth 3008 in this embodiment are both made of medical plastic material, which has a certain degree of elasticity and is easy to seal.

[0072] Furthermore, such as Figure 7 and Figure 8As shown, a first airway 3005 is provided through the oxygen supply pipe 300, and the two ends of the first airway 3005 are respectively connected to the two ends of the oxygen outlet pipe 302. A second airway 3006 is provided on the sealing gasket, and the second airway 3006 connects the two sides of the sealing gasket.

[0073] In this embodiment, the first elastic element 3004 is a spring. In the initial state, the oxygen outlet pipe 302 is completely retracted into the receiving cavity 3001, and one end of the oxygen outlet pipe 302 is attached to the inner wall of the bottom surface of the receiving cavity 3001, thereby reducing the volume of the space on the left side of the partition ring 3003 to 0. At this time, the first elastic element 3004 applies a pulling force to the oxygen outlet pipe 302, causing the oxygen outlet pipe 302 to pop outward.

[0074] like Figure 8 As shown, given the small diameter of the second airway 3006 and its limited gas flow, when the oxygen delivery tube 302 shifts, the separating ring 3003 moves accordingly, causing a change in the volume of space on both sides of the receiving cavity 3001. Specifically, the volume of space on the left increases, creating a negative pressure effect and forming suction, allowing the first airway 3005 at the tip of the oxygen delivery tube 302 to draw in some airway secretions for storage in the left cavity. At the same time, the oxygen stored in the right space is pushed out along the second airway 3006 under the action of the separating ring 3003, effectively alleviating the hypoxia caused by the inability to supply oxygen during repeated intubation.

[0075] Meanwhile, a limiting groove 3007 is provided on the side of the receiving cavity 3001 near the outer wall of the oxygen supply pipe 300. Limiting teeth 3008 are arranged in an array in the limiting groove 3007. A limiting block 3009 is provided on the outer wall of the separating ring 3003. The limiting block 3009 is slidably disposed in the limiting groove 3007. A locking tooth 3011 is slidably disposed on the limiting block 3009.

[0076] In this embodiment, the locking tooth 3011 and the limiting tooth 3008 engage; as Figure 9 As shown, when the frame 100 is inflated, the air pump starts and pushes the locking tooth 3011 down and separates it from the limiting tooth 3008, thereby releasing the limiting of the separating ring 3003; thus, the oxygen outlet pipe 302 can move under the pull of the spring, realizing the absorption of residual secretions and the release of stored transition oxygen.

[0077] In other embodiments, the limiting tooth 3008 has two surfaces: a right-angled surface and a blunt surface. The locking tooth 3011 is also in the shape of a right-angled trapezoid. The locking tooth 3011 slides upward and contacts the limiting tooth 3008. At this time, the right-angled surface of the limiting tooth 3008 and the right-angled surface of the locking tooth 3011 engage with each other, thereby making the limiting block 3009 also synchronously limited and engaged, and the separating ring 3003 and the oxygen outlet pipe 302 cannot move.

[0078] Preferably, the tooth 3011 is made of magnetic material, and the area on the skeleton 100 corresponding to the initial position of the tooth 3011 is also provided with magnetic material, so that when the skeleton 100 is in the un-inflated state, the magnetic attraction on the skeleton 100 slides upward and is clamped with the limiting tooth 3008; when the skeleton 100 is inflated, the magnetic attraction is reduced, the tooth 3011 is pulled back to the original position by the elastic element arranged between the tooth 3011 and the limiting block 3009, thereby releasing the clamping of the tooth 3011, and the oxygen outlet pipe 302 is released from the clamping, and slowly moves out.

[0079] Embodiment 5

[0080] Reference Figures 1-11 For the fifth embodiment of the present application, the embodiment is based on the previous embodiment, and the difference is that the limiting tooth 3008 is a rectangular hole, and the tooth 3011 adjusts the limiting effect by following the position change of the oxygen outlet pipe 302, thereby preventing the oxygen outlet pipe 302 from rebounding after being stretched out, and causing the temporarily adsorbed mucus to rebound and flow out.

[0081] Specifically, a rotating cavity 3012 is arranged in the limiting block 3009, and a rotating column 3021 is coaxially arranged at the lower end of the tooth 3011, and a reciprocating groove 3013 is arranged on the outer wall of the rotating column 3021.

[0082] The inner wall of the rotating cavity 3012 is vertically slidably provided with a movable rod 3014, and the movable rod 3014 is provided with a sliding column 3015, and the sliding column 3015 is slidably connected with the reciprocating groove 3013.

[0083] As shown in Figure 11 , the end surface of the movable rod 3014 is provided with a switching rod 3016, the movable rod 3014 and the bottom surface of the rotating cavity 3012 are provided with a balance spring 3018, the inner wall of the rotating cavity 3012 is further fixedly provided with a limiting hoop 3019, the rotating column 3021 is rotatably arranged on the limiting hoop 3019, and the switching rod 3016 vertically slides through the partition ring 3003 and is provided with a fan plate 3017.

[0084] As shown in Figure 11 , the movable rod 3014 is an L-shaped frame rod, the switching rod 3016 extends downward along the axis direction of the rotating column 3021 until it penetrates into the first air duct 3005, the first air duct 3005 is provided with a circular hole, and the fan plate 3017 is slidably arranged in the circular hole.

[0085] Preferably, when the air pressure in the first air duct 3005 changes, the fan plate 3017 is pushed to move up and down, thereby driving the switching rod 3016 and the movable rod 3014 to move, and finally driving the rotating column 3021 and the tooth 3011 to rotate through the sliding of the sliding column 3015 in the reciprocating groove 3013, and the tooth 3011 can slide up and down along the axis direction of the rotating column 3021, but cannot rotate relatively.

[0086] More preferably, as shown, since the tooth 3011 is a right-angled trapezoidal shape and the limiting tooth 3008 is a rectangular hole, the right-angled surface of the tooth 3011 will be locked and unable to move when it is in contact with the limiting tooth 3008, and the tooth 3011 can slide along the inclined surface to another limiting tooth 3008 when the inclined surface is in contact with the limiting tooth 3008, realizing continuous movement. Figure 9

[0087] Further, the balance spring 3018 is a spring, which is used to balance the gravity of the movable rod 3014, so as to ensure that the change of the air pressure in the first air channel 3005 can more directly drive the fan plate 3017 to move up and down, and the spring can also serve as a buffer.

[0088] The reciprocating groove 3013 is arranged on the surface of the rotating column 3021, and the reciprocating groove 3013 is a broken line groove, one of the broken line edges has a small angle and is relatively flat, and the other broken line edge has a large angle and is relatively steep. There are two reciprocating grooves 3013 on the rotating column 3021, and the two reciprocating grooves 3013 are connected at the head and tail, so that when the sliding column 3015 rotates along the reciprocating groove 3013, the rotating column 3021 will rotate by 180°, and when the oxygen outlet pipe 302 slides to the maximum stroke, the outer wall of the oxygen supply pipe 300 at the corresponding position of the tooth 3011 is also provided with a magnetic adsorption material, which adsorbs the tooth 3011 to rise.

[0089] In summary, as shown in the initial state, the right-angled surface of the tooth 3011 is connected to the right side of the limiting tooth 3008, thereby limiting the oxygen outlet pipe 302, and when the skeleton 100 is opened, the magnetic attraction force is weakened, the tooth 3011 falls, and the fan plate 3017 falls to drive the switching rod 3016 and the movable rod 3014 to descend, and the sliding column 3015 moves downward, and the rotating column 3021 rotates to realize 180° rotation of the tooth 3011, and the right-angled surface and the inclined surface realize position exchange. Figure 11 When the oxygen outlet pipe 302 reaches the maximum stroke, the negative pressure disappears, the suction force decreases, and under the driving of the balance spring 3018, the sliding column 3015 returns to the initial position, and the tooth 3011 rotated by 180° is attracted by the magnetic adsorption material at this position and approaches the limiting tooth 3008, and the right-angled surface of the tooth 3011 is again attached to the left side of the limiting tooth 3008 and locked, so that the oxygen outlet pipe 302 is limited and prevented from retracting and the temporarily adsorbed mucus from rebounding and flowing out.

[0090]

[0091] ​​It is important to note that the constructions and arrangements of the application shown in the various exemplary embodiments are illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in the application. For example, elements shown as integrally formed can be constructed of multiple parts or elements, the position of elements can be reversed or otherwise varied, and the nature or number of elements can be altered or varied. Accordingly, all such modifications are intended to be included within the scope of the present application. The order or sequence of any process or method steps can be varied or re-sequenced without departing from the subject matter. Any "device" or "structure" as used herein is intended to be synonymous with "structure" or "means" for performing a function. In the claims, means-plus-function clauses are intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes, and omissions can be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present application. Accordingly, the present application is not limited to the particular embodiments described in the specification but extends to any embodiments that would fall within the scope of the appended claims.

[0092] It should be noted that the above examples are only used to illustrate the technical solutions of the present application but not limit the present application. Although the present application is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A flexible support structure, characterized in that, include: At least two skeletons (100) arranged in a circular array, each skeleton (100) having a hollow air cavity (101) inside, the skeleton (100) expanding by injecting air into the air cavity (101); The skin (102) is attached to the outer wall of the skeleton (100). The skin (102) moves with the expansion of the skeleton (100) and stretches to form an ellipsoid. The inner surface of the skin (102) is squeezed and attached to the tracheal wall when the gas is filled.

2. The flexible support structure as described in claim 1, characterized in that: The skeleton (100) is a semi-elliptical structure, and multiple skeletons (100) are spliced ​​together to form a complete elliptical outline; the skin (102) is sealed and covers the outer wall of each skeleton (100) to form a closed space; a vent (201) is provided on one side of the outer wall of the skin (102) to balance the air pressure inside and outside the flexible support structure.

3. An endotracheal tube, comprising a flexible support structure as described in any one of claims 1-2, characterized in that: An oxygen supply tube (300) is provided, the outer wall of which is simultaneously sealed to each of the skeletons (100), and the outer wall of the oxygen supply tube (300) is fitted with the skin (102) to form a sealed cavity; An air supply chamber (301) is provided on the oxygen supply pipe (300), and each of the air chambers (101) is connected to the air supply chamber (301) through an independent channel; An oxygen outlet pipe (302) is provided at one end of the oxygen supply pipe (300) near the oxygen outlet in a sliding and telescopic manner.

4. The endotracheal intubation tube as described in claim 3, characterized in that: In the initial state when the air chamber (101) is not inflated, the skeleton (100) and the skin (102) together form a semi-enclosed space, and the oxygen outlet pipe (302) is covered in the semi-enclosed space. When the air chamber (101) is inflated, the skeleton (100) and the skin (102) are pushed outward under the action of air pressure, and at the same time, the oxygen outlet pipe (302) is pushed outward along the axial direction of the oxygen supply pipe (300).

5. The endotracheal intubation tube as described in claim 4, characterized in that: The oxygen supply pipe (300) has a receiving cavity (3001) inside, and the oxygen outlet pipe (302) is slidably disposed in the receiving cavity (3001). A sealing gasket is provided between the end of the oxygen supply pipe (300) and the oxygen outlet pipe (302).

6. The endotracheal intubation tube as described in claim 5, characterized in that: The oxygen outlet tube (302) is provided with a partition ring (3003) at one end of the oxygen supply tube (300) that slides into the oxygen supply tube (300). The partition ring (3003) is used to divide the receiving cavity (3001) into two independent spaces. A first elastic element (3004) is provided between the partition ring (3003) and the sealing gasket. The first elastic element (3004) is used to control the sliding of the oxygen outlet tube (302).

7. The endotracheal intubation tube as described in claim 6, characterized in that: The oxygen supply pipe (300) has a first airway (3005) extending through it, and the two ends of the first airway (3005) are respectively connected to the two ends of the oxygen outlet pipe (302). The sealing gasket has a second airway (3006) extending through it, and the second airway (3006) connects the two sides of the sealing gasket. A limiting groove (3007) is provided on one side of the receiving cavity (3001) near the outer wall of the oxygen supply pipe (300). A limiting tooth (3008) is arranged in an array in the limiting groove (3007). A limiting block (3009) is provided on the outer wall of the separating ring (3003). The limiting block (3009) is slidably disposed in the limiting groove (3007). A locking tooth (3011) is slidably provided on the limiting block (3009).

8. The endotracheal tube as described in claim 7, characterized in that: The limiting tooth (3008) is a rectangular hole, the limiting block (3009) has a rotating cavity (3012) inside, the lower end of the locking tooth (3011) is coaxially provided with a rotating column (3021), and the outer wall of the rotating column (3021) is provided with a reciprocating groove (3013).

9. The endotracheal intubation tube as described in claim 8, characterized in that: A movable rod (3014) is vertically slidably provided on the inner wall of the rotating cavity (3012), and a sliding column (3015) is provided on the movable rod (3014). The sliding column (3015) is slidably connected to the reciprocating groove (3013).

10. The endotracheal intubation tube as described in claim 9, characterized in that: The end face of the movable rod (3014) is provided with a switching rod (3016), and a balance spring (3018) is provided between the movable rod (3014) and the bottom surface of the rotating cavity (3012). A limiting hoop (3019) is also fixedly provided on the inner wall of the rotating cavity (3012). The rotating column (3021) is rotatably mounted on the limiting hoop (3019). The switching rod (3016) slides vertically through the separating ring (3003) and is provided with a fan plate (3017).

Images