CN111569213A - A safety tracheal tube assembly structure - Google Patents

Abstract

The invention relates to the technical field of medical supplies and discloses a safety type tracheal catheter assembly structure which comprises a catheter body, wherein a cuff is fixed on the outer side of the lower end of the catheter body, an air guide tube is connected onto the cuff, an air guide nozzle is connected to the outer end of the air guide tube, a supporting bag sleeve capable of axially elastically deforming is arranged on the outer side of the lower end of the catheter body, a corrugated protective film is sleeved between two ends of the outer side of the supporting bag sleeve, an inflation tube is connected onto the supporting bag sleeve, and the outer end of the inflation tube is connected with the inflation. The invention can effectively prevent the head of the catheter body from scraping the inner wall of the respiratory tract to cause the damage of the inner wall of the respiratory tract when in use, and is safer to use.

Description

A safety tracheal tube assembly structure

technical field

The invention relates to the technical field of medical supplies, in particular to a structure of a safe tracheal tube assembly.

Background technique

Tracheal intubation is an important rescue technique commonly used in emergency work, and it is one of the widely used, effective and fast methods in respiratory management. At present, the tracheal intubation commonly used in the market is divided into common intubation, Cole-type intubation, tracheotomy intubation for children, suction catheter for respiratory tract and other types. After the endotracheal tube is inserted into a suitable position, the cuff is inflated to inflate the cuff, and the surface of the cuff is in contact with the respiratory tract for support, thereby positioning the endotracheal tube. However, the front end of the tracheal tube is usually wedge-shaped or pointed (for example, the head of the tracheal tube in Patent Nos. 2017105320476 and 2018107190081 is wedge-shaped), because the glottis above the human airway is narrow, the space in the airway is larger than the glottis. In the process of continuous insertion of the head of the tracheal tube after passing through the glottis, the head of the tracheal tube is in a suspended state, and the head of the tracheal tube is easily scratched with the inner wall of the respiratory tract, thus easily causing damage to the inner wall of the respiratory tract.

SUMMARY OF THE INVENTION

In order to solve the problem that the head of the tracheal catheter in the prior art is easily scraped with the inner wall of the respiratory tract and causes damage to the interior of the respiratory tract when the head of the tracheal catheter is inserted into the respiratory tract, the present invention provides a device that can effectively prevent the head of the catheter body from scratching the inner wall of the respiratory tract, and is more convenient to use. Safe safety type endotracheal tube assembly structure.

In order to achieve the above object, the present invention adopts the following technical solutions:

A safety tracheal catheter assembly structure includes a catheter body, a cuff is fixed on the outer side of the lower end of the catheter body, an air guide tube is connected to the cuff, and an air guide nozzle is connected to the outer end of the air guide tube. The outer side of the lower end of the catheter body is provided with an axially elastically deformable support bag sleeve, a corrugated protective film is sleeved between the two outer ends of the support bag sleeve, and an inflatable tube is connected to the support bag sleeve, and the inflatable tube is The outer end is connected with an inflation nozzle. When in use, pass the lower end of the catheter body through the glottis, and then inflate the support sleeve through the inflation nozzle and the inflation tube, and the support sleeve expands along the axial direction, so as to wrap the head of the catheter body, and then inflate the catheter body. Continue to insert into the airway. During the insertion, the catheter body is protected by the corrugated protective film (supporting sleeve) without damaging the airway. When the head of the catheter body moves to the appropriate position in the airway, the support sleeve will be supported by the air nozzle and air tube. The gas inside is expelled, at this time, the support cuff shrinks along the axial direction, the head of the catheter body is exposed, and then the cuff is inflated through the air guide nozzle and the trachea tube. The catheter body is positioned, and then oxygen is introduced through the catheter body for breathing; when it needs to be taken out, the support cuff is inflated, so that the support cuff axially stretches and covers the head of the catheter body, and then the cuff is deflated to deflate the cuff. Finally, the whole is taken out from the respiratory tract and the glottis. During the process of inserting and pulling out the respiratory tract, the head of the catheter body is protected by the corrugated protective film, so it will not damage the respiratory tract and is safer to use.

Preferably, the cross section of the head of the catheter body is circular, the cross section of the middle part of the catheter body is oval, the center of the catheter body is provided with a diversion channel, and the head of the catheter body is a wedge-shaped structure, One side of the head of the catheter body is provided with a Murphy hole; the middle part of the catheter body is provided with positioning through holes on both sides of the diversion channel, wherein the air guide tube passes through one positioning through hole, and the inflation tube passes through the other Positioning through holes; the upper end of the duct body is provided with a duct extension section, the cross section of the duct extension section is oval, the major diameter of the duct extension section is perpendicular to the major diameter of the duct body, and the outer end of the duct extension section is provided with a Conduit connector. Since human lips are opened up and down, and the glottis is open left and right, the major diameter of the catheter body is parallel to the gap of the glottis, which is convenient for inserting into the glottis, and the major diameter of the extended section of the catheter is parallel to the gap of the lips, thereby reducing the size of the lips. opening for improved comfort.

Preferably, the outer ends of the air guide tube and the inflation tube are provided with an indicating balloon; the outer side of the catheter body is provided with a scale. The indicating bladder is used to indicate air pressure and the scale is used to indicate the depth of insertion.

Preferably, the cuff includes an inner support sleeve and a cuff body, a closed annular air cavity is enclosed between the inner support sleeve and the cuff body, the inner support sleeve is fixed to the outer side of the front end of the catheter body, and the inner support sleeve is fixed to the outer side of the front end of the catheter body. The support sleeve is provided with two connecting through holes, the lower end of the air guide tube extends into the connecting through hole and is connected to the annular air cavity, and the lower end of the inflatable tube passes through the connecting through hole and is connected to the support bag sleeve.

Preferably, the outer sides of both ends of the support bag cover extend outward to form connecting convex rings, the connecting convex ring on the upper end of the supporting bag cover is fixed with the lower end of the inner support sleeve, and a number of elastic cables are arranged between the two connecting convex rings. An axial expansion cavity is arranged in the support bag sleeve, and the lower end of the inflatable tube is communicated with the axial expansion cavity. After inflation in the axial expansion chamber, it expands along the axial direction, and the support bag is elongated, so as to cover and protect the head of the catheter body; after the gas in the axial expansion chamber is released, the tension of the elastic cable makes the support bag The sleeve shrinks along the axial direction, and at this time, the Murphy hole at the head of the catheter body is completely exposed, which is convenient for the catheter body to guide air.

Preferably, an annular gap is formed between the support sleeve and the head of the catheter body, and a number of flexible membrane flaps distributed along the circumferential direction are arranged between the inner annular wall and the outer annular wall of the axial expansion cavity. The inner side and the inner ring wall are integral structures, and the outer side of the flexible membrane flap and the outer ring wall are integral structures. The flexible membrane flap is used to weaken the circumferential expansion of the support cuff after inflation, so that the axial expansion cavity in the support cuff is more conducive to axial expansion after inflation.

Preferably, the lower end of the inner ring wall of the axial expansion chamber protrudes inward to form an elastic convex ring, and the flexible membrane flap corresponding to the elastic convex ring is provided with a through hole; the wall thickness of the elastic convex ring is smaller than that of the inner ring wall. thick. When the axial expansion cavity is inflated with gas, it will continue to inflate the axial expansion cavity. Since the wall thickness of the elastic convex ring is small and the interior is not pulled by the flexible valve flap, the elastic convex ring will continue to be inflated after being inflated. It expands inwardly and hugs the outer wall of the catheter body, so as to stably protect the head of the catheter body and prevent the lower end of the support sleeve from rubbing against the inner wall of the respiratory tract and shrinking.

Therefore, the device of the present invention can effectively prevent the head of the catheter body and the inner wall of the respiratory tract from scratching and cause damage to the inner wall of the respiratory tract during use, and is safer to use.

Description of drawings

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic diagram of the state of the present invention after passing through the glottis.

FIG. 3 is a schematic diagram of the final use state of the present invention.

FIG. 4 is a schematic diagram of the connection of the catheter body, the balloon sleeve, and the support balloon sleeve.

FIG. 5 is a schematic cross-sectional view at A-A in FIG. 1 .

FIG. 6 is a schematic view of the structure of the support cuff.

7 is a cross-sectional view of the support cuff.

FIG. 8 is a cross-sectional view at B-B in FIG. 6 .

In the figure: catheter body 1, diversion channel 100, Murphy hole 101, positioning through hole 102, catheter extension 103, cuff 2, inner support sleeve 20, cuff body 21, annular air cavity 22, connecting through hole 23 , catheter joint 3, airway tube 4, air guide nozzle 5, support bag 6, connecting convex ring 60, elastic cable 61, axial expansion cavity 62, inner ring wall 620, outer ring wall 621, annular gap 63, flexible Membrane flap 64 , elastic convex ring 65 , through hole 66 , corrugated protective film 7 , inflation tube 8 , inflation nozzle 9 , indicating air bag 10 .

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

As shown in Figure 1, Figure 4 and Figure 5, a safety type tracheal catheter assembly structure includes a catheter body 1, a cuff 2 is fixed on the outer side of the lower end of the catheter body 1, and an airway tube 4 is connected to the cuff 2. The airway tube The outer end of 4 is connected with a gas guide nozzle 5, the outer side of the lower end of the catheter body 1 is provided with a support bag 6 that can be axially elastically deformed, and a corrugated protective film 7 is sleeved between the outer ends of the support bag 6, which supports the bag. The sleeve is connected with an inflatable tube 8, the outer end of the inflatable tube is connected with an inflatable nozzle 9, the outer ends of the airway tube 4 and the inflatable tube 8 are all provided with an indicator airbag 10, the outer side of the catheter body 1 is provided with a scale; The cross section of the head is circular, the cross section of the middle part of the catheter body 1 is oval, the center of the catheter body is provided with a diversion channel 100, the head of the catheter body 1 has a wedge-shaped structure, and the head side of the catheter body is in a wedge shape. Murphy holes 101 are provided, and the middle part of the conduit body 1 is provided with positioning through holes 102 on both sides of the diversion channel, wherein the air conduit 5 passes through one positioning through hole, and the inflation tube 8 passes through another positioning through hole; The upper end of the conduit body 1 is provided with a conduit extension section 103, the cross section of the conduit extension section 103 is oval, the major diameter of the conduit extension section 103 is perpendicular to the major diameter of the conduit body 1, and the outer end of the conduit extension section 103 is provided with a Conduit connector 3.

As shown in FIG. 4 , the cuff 2 includes an inner support sleeve 20 and a cuff body 21. A closed annular air cavity 22 is enclosed between the inner support sleeve and the cuff body, and the inner support sleeve 20 is fixed to the outside of the front end of the catheter body. The inner support sleeve 20 is provided with two connecting through holes 23, the lower end of the air guide tube 4 extends into the connecting through hole 23 and is connected to the annular air cavity 22, and the lower end of the inflatable tube 8 passes through the connecting through hole and is connected to the support bag sleeve 6 Connection; as shown in Figure 4, Figure 6, Figure 7, Figure 8, the outer sides of the two ends of the support bag cover 6 extend outward to form a connection convex ring 60, and the connection convex ring at the upper end of the support bag cover is fixed with the lower end of the inner support cover. A number of elastic cables 61 are arranged between the two connecting convex rings 60 , an axial expansion cavity 62 is arranged in the support sleeve 6 , and the lower end of the inflation tube 8 is communicated with the axial expansion cavity; An annular gap 63 is formed between the heads, and between the inner annular wall 620 and the outer annular wall 621 of the axial expansion cavity 62 are a number of flexible membrane flaps 64 distributed along the circumferential direction, the inner side of the flexible membrane flap 64 and the inner annular wall are: One-piece structure, the outer side of the flexible membrane flap and the outer ring wall are one-piece structure, the lower end of the inner ring wall of the axial expansion cavity 62 protrudes inward to form an elastic convex ring 65, and the flexible membrane flap 64 corresponding to the elastic convex ring is on the A through hole 66 is provided; the wall thickness of the elastic convex ring is smaller than that of the inner ring wall, and in this embodiment, the wall thickness of the elastic convex ring is half the wall thickness of the inner ring wall.

With reference to the accompanying drawings, the principle of the present invention is as follows: before use, the state of the cuff and the support cuff is as shown in Figure 1 , the support cuff and the cuff are both in a contracted state, and the volume of the head of the catheter body is the smallest at this time, which is easy to wear After passing through the glottis, the lower end of the catheter body shown in Figure 1 is passed through the glottis. At this time, the support bag is inflated through the inflation nozzle and the inflation tube. Cover the head and continue to inflate the support bag. Due to the small wall thickness of the elastic convex ring 65, it will bulge and deform inward preferentially after inflation, so as to hold and position the front end of the catheter body. At this time, the cuff and support The state of the cuff is shown in Figure 2; the catheter body is then inserted into the respiratory tract. During the insertion, the catheter body is protected by the corrugated protective film (supporting the cuff) and will not damage the respiratory tract. When it is in position, the gas in the support cuff is expelled through the inflatable nozzle and the inflatable tube. At this time, the support cuff shrinks along the axial direction, and the head of the catheter body is exposed. Inflate, the cuff is inflated and contacted with the inner wall of the respiratory tract to support, and then the catheter body is positioned. At this time, the state is shown in Figure 3, and then oxygen is introduced through the catheter body for breathing; similarly, when the trachea body needs to be taken out after use, the trachea body needs to be taken out. The support cuff is inflated, and the cuff is deflated. At this time, the catheter body is in the state shown in Figure 2, and the catheter is pulled out. When the head of the catheter body moves to the position of the glottis, the support cuff is deflated. When the catheter body is in the state shown in Figure 1, the whole body is finally pulled out from the glottis and taken out from the oral cavity. When the catheter body is inserted into the airway and taken out from the airway, the head of the catheter body is covered by the corrugated protective film 7 and the support bag 6, so as to effectively prevent the head of the catheter body from scratching the inner wall of the airway, thereby effectively preventing the catheter body from scratching. To prevent the catheter body from damaging the inner wall of the respiratory tract, the overall use is safer.

The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention in order to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims (7)

1. a safety type tracheal catheter assembly structure, comprising a catheter body, the outer side of the lower end of the catheter body is fixed with a cuff, the cuff is connected with an air guide tube, and the outer end of the air guide tube is connected with an air guide nozzle, It is characterized in that, the outer side of the lower end of the catheter body is provided with an axially elastically deformable support bag sleeve, a corrugated protective film is sleeved between the outer ends of the support bag sleeve, and the support bag sleeve is connected with an inflatable sleeve. The outer end of the inflation tube is connected with an inflation nozzle. 2. A safety type tracheal catheter assembly structure according to claim 1, wherein the cross section of the head of the catheter body is circular, the cross section of the middle part of the catheter body is oval, and the catheter body has an oval cross section. There is a guide channel in the center of the guide tube, the head of the guide tube body is in a wedge-shaped structure, and a Murphy hole is arranged on one side of the head part of the guide tube body; the middle part of the guide tube body is located on both sides of the guide channel. Through holes, wherein the air duct passes through one positioning through hole, and the inflatable tube passes through the other positioning through hole; the upper end of the duct body is provided with a duct extension section, the cross section of the duct extension section is oval, and the size of the duct extension section is large. The diameter is perpendicular to the major diameter of the duct body, and the outer end of the duct extension is provided with a duct joint. 3 . The structure of a safety tracheal catheter assembly according to claim 1 or 2 , wherein the outer ends of the trachea tube and the inflation tube are provided with indicating balloons; the outer side of the catheter body is provided with a scale. 4 . 4. A safety type tracheal catheter assembly structure according to claim 1 or 2, wherein the cuff comprises an inner support sleeve and a cuff body, and a seal is formed between the inner support sleeve and the cuff body. The inner support sleeve is fixed to the outer side of the front end of the catheter body, the inner support sleeve is provided with two connecting through holes, and the lower end of the air guide pipe extends into the connecting through holes to connect with the annular air cavity, The lower end of the inflatable tube is connected with the support bag sleeve after passing through the connecting through hole. 5 . The structure of a safety type tracheal tube assembly according to claim 4 , wherein the outer sides of both ends of the support sleeve extend outward to form connecting convex rings, and the connecting convex ring at the upper end of the support sleeve is connected to the inner support. 6 . The lower end of the sleeve is fixed, a plurality of elastic cables are arranged between the two connecting convex rings, the support bag sleeve is provided with an axial expansion cavity, and the lower end of the inflation tube is communicated with the axial expansion cavity. 6. The structure of a safety tracheal catheter assembly according to claim 5, wherein an annular gap is formed between the support sleeve and the head of the catheter body, and the inner ring wall and the outer ring of the axial expansion cavity are A plurality of flexible membrane flaps distributed along the circumferential direction are arranged between the walls, the inner side of the flexible membrane flap and the inner ring wall have an integrated structure, and the outer side of the flexible membrane flap and the outer ring wall have an integrated structure. 7 . The structure of a safety tracheal tube assembly according to claim 6 , wherein the lower end of the inner ring wall of the axial expansion chamber bulges inward to form an elastic convex ring, and the flexible valve flap corresponding to the elastic convex ring A through hole is arranged on the upper part; the wall thickness of the elastic convex ring is smaller than the wall thickness of the inner ring wall.

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