CN115671470A - Tracheal catheter easy for clinical operation - Google Patents

Abstract

The invention belongs to the technical field of medical facilities, and particularly discloses a tracheal catheter easy for clinical operation, which comprises a catheter main body, an adapter and a limiting mechanism, wherein the wall of the catheter main body is divided into a plurality of smooth wall sections and a plurality of corrugated wall sections along the circumferential direction of the catheter main body, the smooth wall sections and the corrugated wall sections are elastic and are arranged at intervals, the limiting mechanism is used for limiting the corrugated wall to enable the corrugated wall to be in a contraction state, and the adapter is inserted into the tail part of the catheter main body after the limitation on the corrugated wall is removed; the limiting mechanism comprises limiting rods, the limiting rods are fixed on the limiting support, and the distance between the front ends of the limiting rods and the head of the catheter main body is not smaller than the insertion length of the catheter main body. The pipe diameter of endotracheal tube is variable, is adapted to the patient of trachea variation in size, and can avoid fish tail sound gate in order to aim at the sound gate fast, in addition, through reducing endotracheal tube and tracheal area of contact, effectively reduces the intubate resistance.

Description

Tracheal catheter easy for clinical operation

Technical Field

The invention relates to the technical field of medical facilities, in particular to a tracheal catheter easy for clinical operation.

Background

In the process of tracheal intubation, a video laryngoscope is generally adopted for assistance, so that the glottis of a patient is exposed, and then an endotracheal tube can be aligned to the glottis opening with the assistance of the endotracheal tube for intubation, but the following defects exist in practical use:

1) The prior tracheal catheter can not adjust the diameter of the wall, the model of the tracheal catheter which can be operated can be selected only according to the exposure degree of the oral cavity and the airway when the tracheal catheter is inserted into the airway of a patient, and for some patients with difficult opening degree or limited operable space of the oral cavity, the tracheal catheter with smaller model needs to be selected to meet the flexibility of intubation action, thereby achieving the purpose of smoothly inserting the tracheal catheter into the glottis, but respiratory tract injury can be caused by increasing the resistance of the airway, and the smooth performance and quick and effective rescue of anesthesia are seriously influenced;

2) When the trachea cannula is inserted, the head end of the tracheal catheter can abut against the front wall of the upper end of the trachea, and the wall of the tracheal catheter can contact and rub the inner wall of the trachea, so that the mucosa of the trachea can be easily damaged, and the trachea can be damaged and inflamed; and the area of the tube wall of the tracheal catheter contacting the inner wall of the trachea is large, so that the frictional resistance for pushing the tracheal catheter along the trachea is large, and the intubation is not facilitated.

3) When the glottis of a patient is incompletely exposed, due to the space limitation of the inner wall of the oral cavity, a doctor cannot quickly and accurately align the tip of the tracheal catheter to the glottis, the position of the tracheal catheter needs to be adjusted for many times, the intubation efficiency is low, and tissues around the glottis are easily damaged in the process, so that edema, hemorrhage, even arytenoid dislocation and other complications occur.

Disclosure of Invention

Aiming at the problems in the prior art, the invention aims to provide a tracheal catheter easy for clinical operation, the diameter of the tracheal catheter can be changed, the diameter of the tracheal catheter can be reduced during intubation, the tracheal catheter is suitable for patients with different opening degrees and limited operable space in the oral cavity, airway pressure increase and respiratory tract injury caused by forced selection of a smaller tracheal catheter can be avoided, the orientation of the tracheal catheter can be adjusted more flexibly, the glottic opening can be quickly aligned, tissues around the glottic opening can be prevented from being damaged, in addition, the contact area between the tracheal catheter and a trachea after the diameter of the tracheal catheter is reduced, intubation resistance is effectively reduced, intubation efficiency is improved, and the symptoms of tracheal injury, inflammation and the like caused by damage to tracheal mucosa can be relieved.

In order to achieve the purpose, the technical scheme of the invention is as follows:

the tracheal catheter easy to operate clinically comprises a catheter main body, an adapter and a limiting mechanism, wherein the adapter is used for being connected with a breathing machine, the wall of the catheter main body is divided into a plurality of sections of smooth walls and a plurality of sections of elastic corrugated walls along the circumferential direction of the catheter main body, the smooth wall sections and the corrugated wall sections are arranged at intervals, the corrugations of the corrugated walls extend along the length direction of the catheter main body, the corrugated walls are elastic, the limiting mechanism is used for limiting the corrugated walls to enable the corrugated walls to be in a contraction state, and in operation, the adapter is plugged with the tail of the catheter main body after the corrugated walls are limited;

the limiting mechanism comprises limiting rods which are respectively inserted into wave troughs on the outer sides of the corrugated walls, the outer ends of the limiting rods are fixed on a limiting support, the distance between the front end of each limiting rod and the head of the catheter main body is the insertion length of the catheter main body into the trachea, and the limiting support is provided with a pull ring.

Furthermore, the catheter comprises a plurality of support rings formed by connecting spring wires end to end, wherein the support rings are uniformly distributed along the length direction of the catheter main body at equal intervals, the support rings are positioned in the tube wall of the catheter main body, and the part of the spring wires positioned on the corrugated wall is bent and extended along the corrugated direction on the corrugated wall.

Furthermore, an elastic film sleeve is sleeved outside the catheter main body and is in a tight state, and a hydrophilic coating is coated on the outer wall of the elastic film sleeve.

Further, the front end of the limiting rod is provided with an elastic rod extending along the length direction of the catheter main body, the diameter of the elastic rod is gradually reduced, the diameter of one end, away from the limiting rod, of the elastic rod is the smallest, and the total length of the part, inserted into the catheter main body, of the elastic rod and the limiting rod is not larger than the length of the catheter main body.

Further, still include the flexible hose and drive flexible hose flexible drive arrangement, the inner wall of the most advanced of pipe main part is kept away from the inner wall of one side of most advanced through flexible hose connection pipe main part, just flexible hose is arranged in the hole of pipe main part.

Furthermore, the flexible hose is a corrugated pipe, one end of the corrugated pipe is closed, the other end of the corrugated pipe is connected with a first pipeline arranged in the catheter main body, the first pipeline is connected with a driving device, and the driving device is used for inflating and deflating the first pipeline.

Further, the drive device comprises an injector, the first pipeline extends along the catheter main body and extends out of the catheter main body to be connected with the first medical injection connector, and the first medical injection connector is in insertion fit with a nipple of the injector.

The device comprises a guide pipeline, a hard pipe sleeve, a plurality of annular grooves and a suction device, wherein the guide pipeline is inserted into the oral cavity of a patient, the outer end of the guide pipeline is provided with a flange part, the outer sleeve of the guide pipeline is sleeved with the hard pipe sleeve, the outer side of the guide pipeline is provided with the annular grooves extending along the circumferential direction of the guide pipeline, the inner wall of the hard pipe sleeve is matched with the annular grooves to form a closed annular air passage, the hard pipe sleeve and the guide pipeline are bonded or fixed in a thermoplastic forming mode, the flange and the guide pipeline are integrally formed, a plurality of air suction holes used for communicating inner holes of the guide pipeline are uniformly distributed in the circumferential direction of the annular air passage, the annular air passage is connected with the suction device, and the flange part is provided with a lace;

further, one side of the flange part close to the lip of the patient is provided with a first annular air bag, and the first air bag is provided with an inflation inlet.

Further, the suction device comprises a filtering component, a sterilization component, a vacuum pump and a gas storage tank which are sequentially connected through pipes, and the filtering component is connected with the annular gas passage through a second pipeline.

Furthermore, the wave crest at the inner side of the corrugated wall is provided with a first reinforcing rib extending along the length direction of the catheter main body.

Compared with the prior art, the tracheal catheter easy for clinical operation provided by the invention has the advantages that the structure is different, the operation is convenient, the corrugated wall is arranged on the wall of the catheter main body, the reduction of the diameter of the catheter main body before intubation can be realized by matching with the limiting mechanism, the limitation of the limiting mechanism on the corrugated wall can be released after intubation is finished, so that the diameter of the catheter main body is expanded and recovered to the normal size under the action of elastic deformation of the corrugated wall, the diameter of the tracheal catheter can be changed, the diameter of the tracheal catheter is reduced during intubation, the tracheal catheter is suitable for patients with different opening degrees and limited operable space in oral cavities, the airway pressure increase and respiratory tract injury caused by forced selection of a tracheal catheter with a smaller model are avoided, the orientation of the tracheal catheter can be adjusted more flexibly, the doorway can be aligned with sound quickly, the tissue around the glottis is avoided being damaged, in addition, the intubation resistance is effectively reduced by reducing the contact area between the tracheal catheter and the trachea after the diameter reduction, the intubation efficiency is improved, and the symptoms such as tracheal injury and inflammation caused by damage to the tracheal mucosa can be reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a front view of an embodiment of an endotracheal tube which is easy to operate clinically;

FIG. 2 is a full sectional view of FIG. 1;

FIG. 3 is a front view of a second embodiment of an endotracheal tube which is easy to operate clinically;

FIG. 4 is a full cross-sectional view of FIG. 3;

FIG. 5 is a schematic structural view of the catheter body of FIG. 1;

FIG. 6 is a schematic structural view of a limiting mechanism;

FIG. 7 is an enlarged view of a portion A of FIGS. 2 and 4;

FIG. 8 is a schematic view of the structure of the guide duct;

FIG. 9 is a cross-sectional view B-B of the first embodiment of the catheter body of FIG. 5;

FIG. 10 is a schematic view of the support ring of FIG. 9;

FIG. 11 is a cross-sectional view B-B of the second embodiment of the catheter body of FIG. 5;

in the figure: 1. tip, 2 catheter body, 201 smooth wall, 202 corrugated wall, 3 cuff, 4 elastic film sleeve, 5 first pipe, 6 first medical injection joint, 7 syringe, 8 rubber sealing washer, 9 adapter, 10 first reinforcing rib, 11 second reinforcing rib, 12, a suction hole, 13, a flange part, 14, a hard pipe sleeve, 15, an annular groove, 16, a guide pipeline, 17, a first air bag, 18, a second pipeline, 19, a corrugated pipe, 20, a limiting rod, 21, an elastic rod, 22, a limiting bracket, 23, a pull ring and 24, a spring wire.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It should be apparent that the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, 2, 5, 7, 9 and 10, an endotracheal tube easy for clinical operation as a preferred embodiment of the present invention includes a tube body 2, an adapter 9 and a limiting mechanism for connecting a ventilator, wherein the adapter 9 is a conventional component, and in order to improve the tube body 2, specifically, the tube wall of the tube body 2 is divided into a plurality of smooth wall sections 201 and a plurality of corrugated wall sections 202 having elasticity along the circumference thereof, the smooth wall sections 201 and the corrugated wall sections 202 are arranged at intervals and connected in sequence, and the corrugations of the corrugated wall 202 extend along the length direction of the tube body 2, and the corrugated wall 202 has elasticity, so as to ensure that the corrugated wall 202 has the capability of recovering deformation after being folded, which can be realized by the material of the corrugated wall 202, and how to select the material to realize the elastic deformation capability of the corrugated wall 202, which is common knowledge of those skilled in the art, transparent medical rubber material or silica gel material can be selected in actual operation, and can be shaped by vulcanization process; the limiting mechanism is used for limiting the corrugated wall 202 to enable the corrugated wall 202 to be in a contraction state, namely the limiting mechanism is used for limiting the corrugated wall 202 to enable the corrugated wall 202 to be in a compressed and folded state, so that the pipe diameter of the conduit body 2 is reduced, and in operation, the adapter 9 is inserted into the tail of the conduit body 2 after the corrugated wall 202 is limited, namely the adapter 9 is installed at the tail of the conduit body 2 only after the limiting mechanism is operated to remove the limitation on the corrugated wall 202, so that the adapter 9 is stably connected with the tail of the conduit body 2, the conduit body 2 with the reduced pipe diameter is not provided with the adapter 9, and the conduit body 2 and the adapter 9 are kept in a medium interference fit, so that the adapter 9 is effectively prevented from falling off from the conduit body 2 in the use process, in addition, in other embodiments, the tail of the conduit body 2 is provided with an internal thread, the adapter 9 is in threaded connection with the tail of the conduit body 2, the adapter is not limited to the adapter, and preferably, a rubber sealing gasket 8 is arranged at one end of the conduit body 9 which is abutted against the conduit body 2, so that the internal thread can extrude the sealing gasket 8 to improve the sealing performance of the rubber sealing gasket, and the sealing gasket 8;

wherein, as shown in fig. 6, the limiting mechanism includes limiting rods 20 respectively inserted into the troughs outside the corrugated walls 202, the outer ends of the limiting rods 20 are all fixed to the limiting brackets 22, the limiting brackets 22 are located at the tail of the catheter main body 2, so that the staff can control the limiting brackets 22 to insert and extract the limiting rods 20, specifically, the distance between the limiting rods 20 and the axis of the catheter main body 2 is set to be smaller than the distance between the troughs and the axis of the catheter main body 2 in a natural state, and then the troughs can be pulled to be close to the axis of the catheter main body 2 after the limiting rods 20 are inserted into the troughs, so as to compress the corrugated walls 202, thereby reducing the pipe diameter of the catheter main body 2, and the distance between the front ends of the limiting rods 20 and the head of the catheter main body 2 is the insertion length of the catheter main body 2 into the trachea, and the insertion length of the adult tracheal catheter into the trachea is about 5cm, the insertion length between the front end of the catheter main body and the incisor is 20-24cm, and the insertion depth is the common knowledge of medical personnel in the field of anesthesia, when in specific operation, the front end of the control limiting rod can be positioned between the black marking lines on the side surface of the front end of the catheter main body, the black marking lines are the structures of the catheter main body and are used for assisting a doctor to control the insertion depth of the catheter main body, generally, when in intubation, a glottis is positioned between the two black marking lines on the catheter main body 2, so that the insertion length can be controlled, it needs to be noted that the insertion length is less than 1/4 of the total length of the catheter main body 2, the limiting rod 20 can drive the pipe diameter close to the head of the catheter main body 2 to be reduced, so that the pipe diameter of the tracheal catheter is integrally reduced, and the wave crest on the inner side of the corrugated wall 202 is provided with a first reinforcing rib 10 extending along the length direction of the catheter main body 2, avoid gag lever post 20 to disturb the pipe main part 2 insert trachea section bending deformation, thereby guarantee not to influence pipe main part 2 insert the trachea section through bending deformation entering trachea, it needs to pay attention to, under the intensity support of first strengthening rib 10 and smooth wall 201, can drive the pipe diameter of being close to pipe main part 2 head and reduce, realize whole pipe diameter that reduces endotracheal tube, and preferably, spacing support 22 is equipped with pull ring 23, so that the staff pulls out gag lever post 20 from pipe main part 2's afterbody after the intubate is accomplished.

When the tracheal catheter easy for clinical operation provided by the invention is applied, the corrugated wall 202 is arranged on the wall of the catheter main body 2, and the limit mechanism is matched to reduce the pipe diameter of the catheter main body 2 before intubation, the limit of the limit mechanism on the corrugated wall 202 can be released after intubation is completed, so that the pipe diameter of the catheter main body 2 is expanded and restored to a normal size under the action of elastic deformation of the corrugated wall 202, the pipe diameter of the tracheal catheter can be changed, the pipe diameter of the tracheal catheter is reduced during intubation, the tracheal catheter is suitable for patients with different opening degrees and limited operable space in oral cavities, the increase of airway pressure and airway injury caused by forced selection of a tracheal catheter with a smaller model are avoided, the process of replacing tracheal catheters with different models is omitted, the orientation of the tracheal catheter can be adjusted more flexibly, the glottis can be quickly aligned to avoid damaging tissues around the glottis, in addition, the intubation resistance is effectively reduced by reducing the contact area between the tracheal catheter with the reduced pipe diameter and a trachea of a human body, the intubation resistance is improved, and the symptoms such as tracheal injury and inflammation caused by tracheal mucosa can be reduced.

In addition, the ability of the head portion of the catheter main body 2 to bend and deform slightly due to the first beads 10 extending in the longitudinal direction of the catheter main body 2 being provided at the peaks inside the corrugated wall 202 can be eliminated by reducing the diameter of the catheter main body 2 to achieve more convenient steering of the head portion of the catheter main body 2.

It should be noted that the insertion and extraction may be performed to adjust the length of the stop rod 20 inserted into the catheter body 2.

And in actual practice, the presence of the first reinforcing ribs 10 extending in the longitudinal direction of the catheter main body 2 at the peaks inside the corrugated wall 202 has little, if any, negligible effect on the bending capability of the head portion of the catheter main body 2, and in particular, the effect can be further reduced by reducing the number and thickness of the first reinforcing ribs 10.

As shown in fig. 9 and 10, as a first embodiment of the catheter main body, a plurality of support rings formed by connecting spring wires 24 end to end are further included, and the plurality of support rings are uniformly distributed along the length direction of the catheter main body 2 at equal intervals, wherein the support rings are located in the tube wall of the catheter main body 2, and a portion of the spring wire 24 located on the corrugated wall 202 is bent and extended along the corrugated direction on the corrugated wall 202, that is, the shape in the wave crest or the wave trough is bent into a V shape, so that the corrugations and the shape of the spring wire 24 are adapted, specifically, the support rings formed by connecting the spring wires 24 end to end can be placed in an injection mold according to a predetermined position in the process of producing the catheter main body 2, so that the support rings and the catheter main body 2 can be integrally arranged, and the specific injection molding process is common knowledge of a worker in the field of injection molding, which is not described in detail, and the plurality of the support rings are uniformly distributed along the length direction of the catheter main body 2 at equal intervals, that the ability of the corrugated wall 202 to restore the deformation of the corrugated wall 202 is improved, that the outer wall of the catheter main body 2 after the intubation is completed, the intubation tube, the outer wall of the endotracheal tube 2 is enlarged, and the outer wall of the trachea can be sealed to avoid the trachea can be sealed with the trachea tube 2; the pipe diameter of the conduit body 2 is enlarged as much as possible, so that the air inflow is improved; in addition, the support ring can be added on the tube wall of the main body 2 of the catheter to improve the strength and elasticity of the tracheal catheter, so that the main body 2 of the catheter is prevented from bending in the intubation process.

As shown in fig. 11, as a second embodiment of the catheter main body, instead of providing the V-shaped spring wire 24 in the corrugated wall 202, the first rib 10 and the second rib 11 may be molded by an integral injection molding process, specifically, by providing the corrugated wall 202 with the second rib 11 extending from the peak to the valley, connecting the second rib 11 to the first rib 10, and further improving the ability of the corrugated wall 202 to recover elastic deformation by the cooperation of the first rib 10 and the second rib 11.

For better technical effect, based on the above embodiment, the catheter main body 2 is externally sleeved with the elastic film sleeve 4, the elastic film sleeve 4 is in a tight state, the elastic film sleeve 4 is used for shielding the crease of the corrugated wall 202, so as to ensure the smoothness of the outer wall of the catheter main body 2, avoid scratching the inner wall of the trachea, reduce the friction force between the catheter main body 2 and the trachea, facilitate intubation, the outer wall of the elastic film sleeve 4 is wrapped with a hydrophilic coating, the surface of the catheter main body 2 is subjected to modification treatment, the hydrophilic coating has a functional coating with good biocompatibility, and in a dry state, the coating has a thickness within 5 microns, has good toughness, is uniformly adhered to the surface of the elastic film sleeve 4, is colorless and transparent, and is not easy to observe by naked eyes; in a wet state, the hydrophilic coating is activated by water to form colorless and transparent hydrogel, the hydrogel coating is highly lubricated and can bear repeated friction, the friction damage to the inner wall of the trachea in the intubation process is further reduced, and the insertion of the head end into the trachea is facilitated, wherein the elastic film sleeve 4 can be made of medical rubber or medical silica gel, which is also common knowledge of technical personnel in the field, and the elastic film sleeve 4 is ensured to have great elastic deformation allowance, and the elasticity of the elastic film sleeve 4 is small, namely the binding force on the catheter main body 2 is small, so that the corrugations can be unfolded under the elastic action of the corrugated wall 202, and the effect of expanding the inner diameter of the catheter main body 2 is achieved.

On the basis of the above embodiment, as shown in fig. 6, the front end of the limiting rod 20 is provided with an elastic rod 21 extending along the length direction of the catheter main body 2, the elastic rod 21 can elastically deform, the diameter of the elastic rod 21 gradually decreases, and the diameter of the end of the elastic rod 21 away from the limiting rod 20 is the smallest, wherein the elastic rod 21 does not protrude out of the end of the front end of the catheter main body 2, so as to avoid the elastic rod from extending out to scratch or interfere with the propulsion of the catheter main body 2, that is, the elastic rod 21 is matched with the limiting rod 20 to limit the head of the catheter main body 2, so as to strengthen the constraint on the head of the catheter main body 2, and improve the pipe diameter reduction degree of the head of the catheter main body 2; it should be noted that the resilient rod 21 has elastic deformation capability, which does not affect the head deformation capability of the catheter main body 2 and does not interfere with the insertion of the head of the catheter main body 2 into the trachea by deformation.

It should be noted that the bending degrees of the stopper rod 20 and the elastic rod 21 are the same as the bending degree of the catheter main body 2.

Specifically, the elastic rod 21 and the limiting rod 20 are made of rubber, the hardness of the limiting rod 20 is improved by increasing the diameter of the limiting rod 20, the diameter of the elastic rod 21 is reduced to reduce the hardness of the elastic rod and enable the elastic rod to have elastic deformation capacity, and in specific production, the elastic rod 21 and the limiting rod 20 can be integrally produced and processed, but the elastic rod is not limited to the elastic rod 21 and the limiting rod 20, and the elastic rod 21 and the limiting rod 20 can be thin elastic metal rods, and the diameter of the thin elastic metal rods can be set to meet the requirements of the elastic rod 21 and the limiting rod 20 in terms of adjusting performance.

On the basis of the above embodiment, as shown in fig. 2, 4, and 7, the tracheal intubation device further includes a flexible hose and a driving device for driving the flexible hose to stretch, an inner wall of the tip 1 of the catheter body 2 is connected to an inner wall of one side of the catheter body 2 away from the tip 1 through the flexible hose, and the flexible hose is located in an inner hole of the catheter body 2, wherein the number of the corrugated walls 202 is one pair, the pair of the corrugated walls 202 is symmetrically arranged on two sides of the tip 1, the number of the corrugations on each corrugated wall 202 is 1, the driving device is used to control the flexible hose to stretch and contract, so as to drive the corrugated walls 202 of the head to compress or extend, so as to change the orientation (or inclination angle) of the tip 1, thereby realizing accurate adjustment of the orientation of the tip 1 to the exposed glottic ostium, avoiding damage to tissues around the glottic ostium, enabling rapid intubation, and in the intubation process, according to the resistance of the tip 1 sensed by hand, so as to flexibly change the direction by adjusting the tip 1, adapt to a bending channel formed by the retroflexion of the airway and the pharyngeal flexion and effectively avoid damage to the upper end of the tracheal intubation, thereby greatly improving the tracheal intubation efficiency and reducing the hard front wall of the tracheal intubation;

it should be noted that, in the process of extending the telescopic hose, the tip 1 may be driven to deviate in the direction away from the axis of the catheter main body 2; in the process of shortening the telescopic hose, the tip 1 can be driven to deviate towards the direction close to the axis of the catheter main body 2.

On the basis of the above embodiment, the flexible hose is a corrugated tube 19, one end of the corrugated tube 19 is closed, the other end of the corrugated tube 19 is connected with a first pipeline 5 arranged in the catheter main body 2, the first pipeline 5 is connected with a driving device, the driving device is used for inflating and deflating the first pipeline 5, and then the driving device is used for inflating and deflating the first pipeline 5 so as to drive the corrugated tube 19 to stretch and retract, and drive the tip 1 to deviate from the axis of the catheter main body 2, thereby adjusting the orientation of the tip 1; when the device works, the turning of the tip 1 can be realized according to the position of the exposed sound door, and the inclination angle of the tip 1 is further adjusted to be aligned with the sound door, so that the catheter main body 2 can conveniently enter the sound door, the intubation efficiency and accuracy are greatly improved, and the inner wall of an trachea is prevented from being scratched; in addition, the opening of the head of the catheter main body 2 can be reduced during intubation by controlling the bellows 19 to shrink, so that a necking structure is formed, and intubation is facilitated.

On the basis of the above embodiment, the driving device includes the injector 7, one end of the first pipeline 5 extends along the catheter main body 2 and extends out of the catheter main body 2 to be connected with the first medical injection connector 6, the first medical injection connector 6 is in plug-in fit with the nipple of the injector 7, and when the driving device works, after the nipple of the injector 7 is inserted into the first medical injection connector 6, the first pipeline 5 is inflated and deflated by pushing and pulling the injector 7, so that the bellows 19 is driven to stretch and retract.

For better technical effect, on the basis of the above embodiments, in the second embodiment, as shown in fig. 3, 4 and 8, the second embodiment further includes a guiding tube 16 inserted into the oral cavity of the patient, the outer end of the guiding tube 16 is provided with a flange portion 13, the flange portion 13 is tightly attached to the lips of the patient, the guiding tube 16 inserted into the oral cavity of the patient is limited to prevent the guiding tube 16 from sliding into the oral cavity of the patient, the guiding tube 16 is externally sleeved with a hard tube sleeve 14, the outer side of the guiding tube 16 is provided with an annular groove 15 extending along the circumferential direction of the guiding tube, the inner wall of the hard tube sleeve 14 and the annular groove 15 cooperate to form a closed annular airway, wherein the hard tube sleeve 14 and the guiding tube 16 are bonded or fixed by thermal plastic molding, the flange and the guiding tube 16 are integrally molded, and the annular airway is circumferentially and is uniformly provided with a plurality of suction holes 12 for communicating the inner hole of the guiding tube 16, specifically, the suction holes 12 are provided at the bottom of the annular groove 15, the annular airway is connected with a suction device, the suction device is selected as a negative pressure suction device for sucking the gas in the guiding tube 16, further preventing the gas in the oral cavity from being spread, the ears of the patient from being tied, and preventing the patient from being tied off, and the ears of the patient from being tied off, and the patient, the patient being tied off the patient, and preventing the patient from being tied off the patient's head 13, and the patient's head, and preventing the patient's head being tied off.

It should explain, through the interior gas of negative pressure suction device suction guide pipeline 16 to avoid the gas that carries the germ of patient's exhalation excessive, block the propagation of germ, and then can be applied to the new crown patient of treatment with this device, with when carrying out trachea cannula to new crown patient, effectively block the propagation chain between patient and the medical personnel, can realize effectually treating the patient, can realize protecting medical personnel again.

On the basis of the above embodiment, the suction device includes a filtering component, a sterilization component, a vacuum pump and a gas storage tank which are sequentially connected by pipes, the filtering component is connected with the annular gas passage through a second pipe 18, the vacuum pump is used for pumping out the gas in the oral cavity of the patient, so that the gas is temporarily stored in the gas storage tank after sequentially passing through the filtering component and the sterilization component, the gas is sequentially filtered and sterilized, and the gas in the gas storage tank can be subsequently subjected to deep treatment to thoroughly eliminate germs carried in the gas, wherein the filtering component includes a coarse filter, a medium filter and a high efficiency filter which are sequentially connected, and are common filters in the medical field, the specific structure and principle are not described in detail any more, and the sterilization component can adopt an ultraviolet sterilization lamp and a disinfectant atomization spraying device which are organically combined to perform sterilization treatment on the gas; it should be added that, patients using the tracheal catheter all adopt general anesthesia and cannot breathe independently, and the gas in the oral cavity of the patient can be prevented from overflowing only by sucking the oral cavity of the patient, and because the oral cavity is in a negative pressure state in the sucking process, the gas in the oral cavity cannot be exhaled from the nasal cavity, but the external gas enters the oral cavity from the nasal cavity; but for better security, the nasal cavity of the patient can be closed by holding the nose of the patient with a nose clip during intubation.

On the basis of the above embodiment, one side of the flange part 13 close to the lips of the patient is provided with the annular first air bag 17, the first air bag 17 is provided with an inflation port, and when the first air bag 17 is inflated in operation, the first air bag 17 is expanded to eliminate the gap between the flange part 13 and the lips of the patient, so that sealing is realized, gas in the oral cavity of the patient is prevented from being exhaled from the gap between the flange part 13 and the lips of the patient, and the mucous membranes of the lips of the patient can be protected from being damaged by compression.

After the intubate is accomplished, accessible sticky tape is fixed in flange portion 13 with pipe main part 2, need not to be fixed in patient face, improves patient's comfort level, utilizes flange portion 13 to support pipe main part 2, guarantees that it is stable, avoids pipe main part 2 to rock.

And the first pipe 5 and the second pipe 18 both extend from the side of the catheter main body 2, so that the adaptor 9 at the tail end of the catheter main body 2 is not interfered to connect the oxygen supply device.

It should be noted that the cuff 3 of the catheter body 2 is adhered to the elastic film sleeve 4, and both the elastic film sleeve 4 and the cuff 3 have elastic force, so that the normal use of the catheter body 2 and the cuff 3 is not affected.

Finally, it should also be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

In the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (11)

1. A tracheal catheter easy for clinical operation comprises a catheter main body and an adapter used for connecting a breathing machine, and is characterized by further comprising a limiting mechanism, wherein the wall of the catheter main body is divided into a plurality of sections of smooth walls and a plurality of sections of elastic corrugated walls along the circumferential direction of the catheter main body, the smooth wall sections and the corrugated wall sections are arranged at intervals, corrugations of the corrugated walls extend along the length direction of the catheter main body, the corrugated walls have elasticity, the limiting mechanism is used for limiting the corrugated walls to enable the corrugated walls to be in a contraction state, and in operation, the adapter is plugged with the tail of the catheter main body after the corrugated walls are limited;

the limiting mechanism comprises limiting rods which are respectively inserted into wave troughs on the outer sides of the corrugated walls, the outer ends of the limiting rods are fixed on a limiting support, the distance between the front ends of the limiting rods and the head of the catheter main body is the insertion length of the catheter main body into the trachea, and the limiting support is provided with a pull ring.

2. The endotracheal tube of claim 1, further comprising a plurality of support rings formed by spring wires connected end to end, and the support rings are uniformly spaced along the length of the tube body, wherein the support rings are disposed in the wall of the tube body, and the portions of the spring wires disposed on the corrugated wall extend in a bending manner along the corrugated direction of the corrugated wall.

3. An endotracheal tube according to claim 1 or 2, characterized in that the tube body is externally sheathed with an elastic film sleeve, the elastic film sleeve is in a tight state, and the outer wall of the elastic film sleeve is coated with a hydrophilic coating.

4. The endotracheal tube according to claim 1, wherein the stopper rod has a front end provided with an elastic rod extending in a longitudinal direction of the tube body, the elastic rod having a diameter gradually decreasing and having a smallest diameter at an end thereof remote from the stopper rod, wherein the elastic rod does not protrude from an end of the front end of the tube body.

5. The endotracheal tube easy for clinical operation according to claim 1, further comprising a flexible tube and a driving means for driving the flexible tube to be flexible, wherein an inner wall of the tip of the tube main body is connected to an inner wall of a side of the tube main body away from the tip through the flexible tube, and the flexible tube is disposed in the inner hole of the tube main body, wherein the number of the corrugated walls is one pair, and the pair of the corrugated walls are symmetrically disposed at both sides of the tip, and the number of the corrugations on each of the corrugated walls is 1.

6. The endotracheal tube according to claim 5, wherein the flexible tube is a bellows, one end of which is closed and the other end of which is connected to a first tube provided in the main body of the endotracheal tube, and the first tube is connected to a driving device for inflating and deflating the first tube.

7. An endotracheal tube according to claim 6, characterized in that the drive means comprises an injector, and in that the end of the first tube remote from the bellows extends along the main tube body and beyond the main tube body to be connected to a first medical injection connector, which is fitted with a nipple of the injector.

8. The endotracheal tube easy for clinical operation according to claim 1, further comprising a guide tube for inserting through the mouth of the patient, wherein a flange portion is provided at an outer end of the guide tube, and the guide tube is sleeved with a hard tube sleeve, an annular groove extending along a circumferential direction of the guide tube is provided at an outer side of the guide tube, an inner wall of the hard tube sleeve and the annular groove cooperate to form a closed annular airway, wherein the hard tube sleeve and the guide tube are bonded or fixed by thermoplastic molding, the flange and the guide tube are integrally molded, and a plurality of suction holes for communicating with an inner hole of the guide tube are uniformly distributed along a circumferential direction of the annular airway, the annular airway is connected with a suction device, and the flange portion is provided with a lace.

9. An endotracheal tube according to claim 8, characterized in that the flange portion is provided with a first annular cuff at a side thereof adjacent the patient's lips, said first cuff being provided with an inflation port.

10. The endotracheal tube easy for clinical operation according to claim 9, wherein the suction means comprises a filter assembly, a sterilization assembly, a vacuum pump and an air reservoir which are sequentially connected by a tube, and the filter assembly is connected with the annular airway through a second tube.

11. An endotracheal tube according to claim 1, characterized in that the peaks inside the corrugated wall are provided with first stiffening ribs extending in the longitudinal direction of the tube body.

Images