CN219423498U - Tube body for nerve monitoring tracheal cannula and nerve monitoring tracheal cannula thereof - Google Patents

Abstract

The utility model relates to a tube body for nerve monitoring trachea cannula and the nerve monitoring trachea cannula, which comprises the following components: the electrode guide wire penetrates through the first opening of the tube body, passes through the channel, penetrates out of the third opening and is connected with an electrode connecting wire; the electrode wire is in contact connection with the silver paste conductive coating at the second opening through a conductive substance and is connected with the electrode connecting wire to form an electric loop. According to the utility model, the conductive coating is printed on the outer wall of the channel of the pipe body, the second opening is arranged, the conductive substance is injected into the channel through the second opening, the conductive coating is connected with the electrode wire through the conductive substance to form a contact electrode with stable contact, the electrode wire is fixedly connected with the electrode connecting wire through the pipe-shaped connecting piece, a stable electric loop is formed, and even if the pipe body is greatly deformed and bent, the electrode wire and the electrode connecting wire are not caused to fall off, so that the stability of electric loop transmission electric signals can be effectively improved.

Description

Tube body for nerve monitoring tracheal cannula and nerve monitoring tracheal cannula thereof

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a tube body for a nerve monitoring tracheal cannula and the nerve monitoring tracheal cannula.

Background

The nerve monitoring tracheal cannula is a product used in the operation of preventing and treating the unobstructed respiratory tract, can provide the unobstructed ventilation airway of a patient, is also used for being connected with a proper nerve monitor, and can be used as a tool for monitoring the EMG signal of the laryngeal muscles of the patient in the operation; the monitoring principle is as follows: the tubular body is used as a main body structure, the inflatable cuff is arranged at the lower section of the tubular body and can be inflated through the cuff inflation tube to expand the inflatable cuff so as to realize positioning of the intubation tube, the electrode connecting wire is used for connecting the contact electrode to the nerve monitor and forming an electrode loop, when the vocal cords are provided with myoelectricity to vibrate, the contact electrode can generate myoelectricity signals, and at the moment, the contact electrode transmits the myoelectricity signals to the myoelectricity display screen through the interface box to amplify, and then the myoelectricity is recorded and an alarm is given.

The existing nerve monitoring trachea cannula (patent number: CN 201920822639.6) consists of a tube body, an inflatable cuff, an inflatable tube and an electrode connecting wire. The gas tube and the electrode connecting wire of the patent are respectively accommodated in a gas tube groove and a wire groove which are formed in the tube wall, the contact electrode is connected with the electrode connecting wire by adopting a conductive carbon film to form an electric loop, wherein the conductive carbon film is wrapped and tightly attached on the tube wall by adopting a soft adhesive tape, and the structure has the following defects:

1: when the nerve monitoring trachea cannula is bent, the electrode connecting wire is easy to separate from the conductive carbon film and is difficult to identify by naked eyes, and when the nerve monitoring trachea cannula is used in an operation, the transmission of an electric signal is interrupted or the monitoring is invalid.

2. Because the electrode wire connection needs four heart yearns to constitute, four heart yearns hold in same wire casing, offer the electrode wire casing that holds four heart yearns on the pipe wall, can necessarily lead to the pipe wall thickening, not enough softness increases the risk of scratch patient's tissue.

3. Because the fixed part of the soft adhesive tape needs to be in close contact with the throat of a patient for a long time, the soft adhesive tape is easy to fall off, and then the conductive carbon film falls off from the tube wall, so that the transmission of an electric signal is influenced while the danger is generated for the patient.

Disclosure of Invention

The utility model aims at providing a tube body of a nerve monitoring tracheal cannula, which enables contact stability of a contact electrode and an electrode connecting wire to be higher and is not easy to damage tissues of a patient.

The second object of the utility model is to provide a nerve monitoring tracheal cannula based on the tube body structure.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

in one aspect, the present utility model provides a tube for a nerve monitoring endotracheal tube, comprising: the pipe body, its characterized in that is in the pipe wall department of pipe body is followed pipe body length direction from the distal end position, has seted up the passageway that runs through the pipe body, set gradually first opening, second opening and third opening along pipe body length direction from the distal end position of pipe body on the outer wall of passageway.

Further, an arc-shaped bulge structure is arranged in the circumferential direction of the pipe body, the arc-shaped bulge structure penetrates through the length direction of the pipe body, and a channel penetrating through the arc-shaped bulge structure is formed in the pipe wall of the arc-shaped bulge structure along the length direction of the pipe body from a far end position.

Further, the outer wall of the channel is printed with a silver paste conductive coating, the silver paste conductive coating covers the second opening, and the width of the silver paste conductive coating in the circumferential direction of the pipe body is 3mm-8 mm.

Further, the length of the silver paste conductive coating in the length direction of the pipe body is 20mm-35 mm.

Further, the channels are provided in at least 1 pair.

Further, the spacing between the pairs of 2 channels is between 3mm and 10 mm.

Further, the height of the arc-shaped protruding structures is not more than 0.5mm.

In another aspect, the present utility model also provides a nerve monitoring endotracheal tube, comprising: the electrode guide wire penetrates through the first opening of the tube body, passes through the channel, penetrates out of the third opening and is connected with an electrode connecting wire; the electrode wire is in contact connection with the silver paste conductive coating at the second opening through a conductive substance and is connected with the electrode connecting wire to form an electric loop.

Further, the electrode guide wire penetrates out of the third opening and is connected with the electrode connecting wire, and the joint of the electrode guide wire and the electrode connecting wire is fixed on the pipe wall by adopting a pipe-shaped connecting piece.

Further, an inflation channel is formed in the pipe wall of the pipe body, the inflation channel is connected with the outer wall of the upper section of the pipe body, the inflation pipe is communicated with the air bag through the inflation channel, the air bag is provided with an inner cavity tightly matched with the pipe body, the pipe body can penetrate through the inner cavity of the air bag, the air bag can be fixed at any position of the pipe body, one end of the outer wall of the air bag forms a spherical top with the inner cavity, the other end of the outer wall of the air bag forms a tail with gradually reduced section diameter with the inner cavity, the air bag is in a water-drop-shaped structure, the outer wall of the air bag and the inner cavity are integrally formed into a sealed inflatable air chamber, and the tail of the air bag is arranged at the lower section of the pipe body.

By adopting the method and the structure, the utility model has the following beneficial effects:

1. the utility model is provided with the channel in the pipe wall, and the electrode guide wire is arranged in the channel, so that the channel can protect the electrode guide wire from being influenced by bending and the patient from being injured by the external pipe wall of the electrode guide wire; the outer wall of the channel of the pipe body is printed with a conductive coating, a second opening is arranged, a conductive substance is injected into the channel through the second opening, the conductive coating is connected with an electrode guide wire through the conductive substance to form a contact electrode which is firmly contacted, the electrode guide wire and an electrode connecting wire are fixedly connected through a pipe-shaped connecting piece, a stable electric loop is formed, and even if the pipe body is bent in a larger deformation manner, the electrode guide wire and the electrode connecting wire cannot fall off, so that the stability of electric loop transmission electric signals can be effectively improved.

2. The arc-shaped bulge structure is arranged in the circumferential direction of the pipe body, the inner diameter size of the channel can be increased only by locally increasing the wall thickness of the pipe body, so that the electrode guide wire with larger diameter or the electrode guide wire with spiral shape can penetrate, the conductive substance contacts the electrode guide wire with larger diameter or the electrode guide wire with spiral shape, the contact area between the conductive substance and the electrode guide wire can be increased, the contact effect between the conductive substance and the electrode guide wire is improved, the contact stability of an electric loop is further improved, and the stability of electric signal transmission is improved.

3. The contact electrode adopts a mode of printing a silver paste coating on the outer side of the tube wall, so that the hidden danger that the traditional exposed electrode wire type contact electrode is easy to scratch the throat tissues of a patient is avoided, meanwhile, a printing process is adopted, two ends are not required to be fixed, the falling risk is avoided, and the safety of the intubation tube is further improved.

The utility model will become more apparent from the following description taken in conjunction with the accompanying drawings which illustrate embodiments of the utility model.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the structure of a pipe body of the utility model;

FIG. 2 is a schematic cross-sectional view of the pipe body of the present utility model provided with an arc-shaped protrusion structure in the circumferential direction;

FIG. 3 is a schematic cross-sectional view of a pipe body with an oval channel section according to the utility model;

FIG. 4 is a schematic cross-sectional view of a tube body with a flat channel section according to the present utility model;

FIG. 5 is a schematic diagram of the overall structure of the nerve monitoring tracheal cannula of the present utility model;

FIG. 6 is an enlarged view of a portion I of the present utility model;

FIG. 7 is a schematic diagram of staggered printing structure of the silver paste conductive coating;

FIG. 8 is a schematic view of the connection part of the electrode wire and the electrode wire according to the present utility model;

FIG. 9 is a schematic view of an electrode wire of the present utility model in a spiral configuration;

FIG. 10 is a schematic view of a drop type air bag structure according to the present utility model;

fig. 11 is a schematic connection diagram of the tubular connector of the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 2, the present utility model provides a tube body for nerve monitoring tracheal intubation, wherein the tube body 1 comprises a phenanthrene hole, an inflation channel and an inflation hole, which are all provided in a general tube body, and further comprises: a channel 2 penetrating the tube body 1 is formed at the tube wall of the tube body 1 along the length direction of the tube body from the distal end position, and a first opening 22, a second opening 23 and a third opening 24 are sequentially formed on the outer wall of the channel 2 along the length direction of the tube body from the distal end position of the tube body 1.

The distal end position in this embodiment refers to the end of the tracheal cannula that is near the position of the balloon.

An electrode guide wire can be arranged in the channel 2 of the tube body 1, penetrates through the first opening 22 and penetrates out of the third opening 24;

the second opening 23 may be filled with a conductive substance to form a conductive connection with the electrode wire in the channel 2.

Further, since the pipe wall of the pipe body is thinner, the inner diameter range of the channel 2 is limited on the thinner pipe wall, and the channel 2 with too small inner diameter is not easy to penetrate into an electrode wire or the electrode wire penetrated is too thin, and the conductivity is reduced, so that in order to increase the inner diameter size of the channel 2, the arc-shaped protruding structure 11 is arranged in the circumferential direction of the pipe body 1, the arc-shaped protruding structure 11 penetrates through the length direction of the pipe body 1, and the channel 2 penetrating through the arc-shaped protruding structure 11 is arranged at the pipe wall of the arc-shaped protruding structure 11 along the length direction of the pipe body 1 from the far end position.

It should be noted that the height of the arc-shaped protruding structure is not more than 0.5mm, so that friction damage to a human body is avoided when the arc-shaped protruding structure contacts the human body.

When the nerve monitoring trachea cannula is used, the contact electrode is required to be in contact with the laryngeal nerve of a patient, an electromyographic signal can be generated when the vocal cord muscle is provided with electromyographic vibration, and the electromyographic signal is transmitted to the nerve monitor by the contact electrode, so that the use effect of the nerve monitoring trachea cannula can be influenced by the capacity of the contact electrode for acquiring and transmitting the electromyographic signal.

In order to avoid the contact electrode from falling off in the use process and improve the contact stability of the contact electrode and the laryngeal nerve, in the embodiment, the silver paste conductive coating 4 is printed on the outer wall of the channel 2, and the silver paste conductive coating 4 printed on the arc-shaped bulge structure 11 is in close contact with the laryngeal muscles of the patient, so that clear myoelectric signals can be received more sensitively; the silver paste conductive coating printed on the pipe wall has strong stability and soft contact property, is not easy to fall off, can reduce the damage to the contact of a patient, and further improves the safety of the cannula.

The silver paste conductive coating 4 covers the second opening 23, and can form continuous circuit connection with the conductive substance injected into the second opening 23;

the width of the silver paste conductive coating 4 in the circumferential direction of the tube body 1 is 3-8 mm, the width of the silver paste conductive coating 4 in the circumferential direction of the tube body 1 is increased, the contact area of a contact electrode and the laryngeal muscles of a patient can be increased, the acquisition range of myoelectric signals is enlarged, and the acquisition of stronger and clearer myoelectric signals is facilitated.

The length of the silver paste conductive coating 4 is not suitable to be too long, and when the tube body 1 is bent, the overlong conductive coating can cause tiny breakage on the surface of the coating, which is difficult to identify by naked eyes, and the transmission stability of electromyographic signals is affected, so that the length of the silver paste conductive coating 4 in the length direction of the tube body 1 is between 20mm and 35mm, and the distance between the silver paste conductive coating and an air bag is between 20mm and 30 mm.

The channels 2 are at least provided with 1 pair, preferably 2 pairs, each pair comprises 2 channels 2, and the contact points and the contact areas of the contact electrodes and patients can be increased by arranging the 2 pairs of channels 2, so that the electromyographic signal acquisition capacity of the contact electrodes is improved.

The interval between each pair of channels 2 cannot be too large, and the excessive interval may cause that the paired contact electrodes cannot simultaneously contact the laryngeal nerve, and further cannot form a conductive loop, and the nerve monitoring capability is lost, so that the interval between the paired 2 channels 2 is controlled to be 3mm-10 mm.

The number of the second openings 23 provided in the channel 2 is at least 1, so that a conductive substance is conveniently injected to connect the silver paste coating and the electrode wire.

Referring to fig. 2 to fig. 4, the shape of the interface of the tube body 1 of the channel 2 can be circular, elliptical or flat, so that the channel can conveniently penetrate into a plurality of linear electrode guide wires or electrode guide wires with spiral structures, so that the conductive substance can be fully contacted with the electrode guide wires, the contact area between the conductive substance and the electrode guide wires is increased, the contact effect between the conductive substance and the electrode guide wires is improved, the contact stability of an electric loop is further improved, and the stability of electric signal transmission is improved.

The inner wall of the pipe body 1 is fixedly provided with a steel wire lining, so that the strength of the pipe body 1 is enhanced, and the pipe body 1 can keep the shape from being folded under the action of external force deformation.

Referring to fig. 7, since the insertion depth of the tube body 1 in the airway of different patients is different, the contact position between the contact electrode and the laryngeal nerve of the patient is also different, so the silver paste conductive coating 4 in this embodiment is designed in a dislocation manner, and the situation that the transmission of the myoelectric signal is interrupted due to the fact that the silver paste conductive coating 4 is not in contact with the laryngeal nerve at the same time can be avoided.

The structure of the conductive coating dislocation design can ensure that the nerve monitoring trachea cannula can stably acquire the electromyographic signals under the condition of different trachea nerve distributions, improve the acquisition quality of the electromyographic signals and avoid the interruption of the acquisition of the electromyographic signals.

The tube body provided by the embodiment is used for nerve monitoring trachea cannula, and can be used as a main structure of the nerve monitoring trachea cannula to form an independent product.

Referring to fig. 5 to 10, the present utility model also provides a nerve monitoring tracheal cannula based on the tube body 1, which comprises a balloon 5, an inflation tube 8, an indication balloon 9, a one-way valve 10 and a joint 11, and further comprises: the electrode wire 21 penetrates from the first opening 22 of the tube body 1, passes through the channel 2, penetrates out from the third opening 24, the penetrating end is connected with the electrode connecting wire 6, the penetrating end is fixed with the first opening 22 by glue, and the electrode wire 21 is in contact connection with the silver paste conductive coating 4 at the second opening 23 through a conductive substance and is connected with the electrode connecting wire 6 to form an electric loop.

Referring to fig. 6 and 9, the electrode wire 21 may be a linear or threaded structure or a combination of two structures, and in this embodiment, the electrode wire with a threaded structure is preferred, so that the contact area between the electrode wire and the conductive material can be increased, the conductivity between the electrode wire and the conductive material can be enhanced, and the transmission quality of the electromechanical signal can be improved.

One or more electrode guide wires 21 can be used, the contact area between the electrode guide wires and the conductive substance can be increased, the conductive performance between the electrode guide wires and the conductive substance is enhanced, and the transmission quality of the electromechanical signals is improved.

The conductive substance is formed by solidifying conductive adhesive or silver paste.

Referring to fig. 8, the electrode wire 21 passes through the third opening 24 and is connected with the electrode connecting wire 6, and the connection part between the electrode wire 21 and the electrode connecting wire 6 is fixed on the pipe wall by adopting a pipe-shaped connecting piece.

Referring to fig. 11, the fixing manner of the electrode wire 21 and the electrode wire 6 of the present embodiment is described:

after the electrode wire 21 passes through the third opening 24, the electrode wire 21 is fixed on the tube body 1 by using a first clamping ring 71 with external threads, a section of electrode wire 21 is reserved to be connected with the electrode connecting wire 6, the electrode connecting wire 6 is fixed on the tube body 1 by using a second clamping ring 72 with external threads, and finally, a tubular connecting piece 73 with internal threads matched with the external threads of the clamping rings is fixed with the first clamping ring and the second clamping ring in a threaded fastening mode, so that the joint of the electrode wire 21 and the electrode connecting wire 6 is stably fixed in the tubular connecting piece 73, and by adopting the fixing mode, even if the tube body is bent in a large deformation mode, the contact electrode and the electrode connecting wire cannot fall off, and the stability of electric loop transmission electric signals can be effectively improved;

on the other hand, the tubular connecting piece 73 is fixed with the first clamping ring 71 and the second clamping ring 72 in a threaded fastening mode, and when needed, the tubular connecting piece 73 can be removed to check the connection condition of the electrode wire 21 and the electrode connecting wire 6, so that the operation is simple and convenient.

The air bag 5 is a cylindrical air bag or a spherical air bag or a water drop type air bag.

A preferred embodiment of the balloon shape is described below with reference to fig. 10;

the inflatable tube is characterized in that an inflation channel 3 is formed in the tube wall of the tube body 1, an inflation tube 8 penetrates through the second inflation hole 32 of the tube body 1 and is communicated with the air bag 5, the air bag 5 is a water drop type air bag, the air bag 5 is provided with an inner cavity tightly matched with the tube body 1, the tube body 1 can penetrate through the inner cavity of the air bag 5, the air bag 5 can be fixed at any position of the tube body 1, one end of the outer wall of the air bag 5 and the inner cavity form a spherical top, the other end of the outer wall of the air bag 5 and the inner cavity form a tail with gradually reduced section diameter, the air bag 5 is of a water drop type structure, the outer wall of the air bag 5 and the inner cavity are integrally formed into a sealed inflatable air chamber, and the tail of the air bag 5 is arranged at the lower section of the tube body 1.

The appearance structure of the air bag 5 is in a water drop shape, the diameter of the air bag 5 is gradually reduced from the upper end to the bottom end of the pipe body 1, the air bag 1 is gradually reduced in diameter, the air bag 5 can be tightly attached to different air pipe diameters, if the air passage of a patient is thicker than the conventional air passage, the insertion depth of the air bag 5 can be increased when the air bag 5 is used, and the maximum diameter of the air bag 5 is positioned at the corresponding air passage and is tightly attached to the air passage; if the airway of the patient is thinner than the conventional airway, the insertion depth of the air bag 5 can be reduced, so that the maximum diameter of the air bag 5 is positioned at the adaptive airway and is tightly attached to the airway; the sealing effect of the air bag is not affected;

the diameter of the air bag 5 is gradually reduced from the upper end to the bottom end of the tube body 1, compared with a common cylindrical air bag or a spherical air bag, the structure of the air bag 5 is suitable for the physiological structure from thick to thin of the human trachea, the contact area with the respiratory tract of a patient is small, the small-section trachea cannot be extruded, and the airway mucosa is not easy to damage.

The application method of the utility model comprises the following steps:

the lower end of the utility model is inserted into a proper position from the respiratory tract of a patient, the air bag 5 is inflated and fixed in the trachea by utilizing a single valve 10, the silver paste conductive coating 4 is ensured to be fully contacted with the laryngeal nerve, the silver paste conductive coating 4 sequentially transmits the acquired myoelectric signals to an electrode guide wire 21 and an electrode connecting wire 6 through conductive substances, and the electrode connecting wire 6 is connected with an external monitor to transmit the myoelectric signals to the external monitor.

Of course, the present utility model is capable of other various embodiments and its several details are capable of modification and variation in light of the present utility model by one skilled in the art without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims (10)

1. A body for nerve monitoring trachea cannula, its constitution includes: the pipe body, its characterized in that is in the pipe wall department of pipe body is followed pipe body length direction from the distal end position, has seted up the passageway that runs through the pipe body, set gradually first opening, second opening and third opening along pipe body length direction from the distal end position of pipe body on the outer wall of passageway.

2. The tube body for a nerve monitoring tracheal cannula according to claim 1, wherein an arc-shaped bulge structure is arranged in the circumferential direction of the tube body, the arc-shaped bulge structure penetrates through the length direction of the tube body, and the channel penetrating through the arc-shaped bulge structure is formed at the tube wall of the arc-shaped bulge structure from a far end position along the length direction of the tube body.

3. A tube for a nerve monitoring endotracheal tube as claimed in claim 1 or claim 2 wherein the outer wall of the channel is printed with a silver paste conductive coating, the silver paste conductive coating covering the second opening, the silver paste conductive coating having a width in the circumferential direction of the tube of between 3mm and 8 mm.

4. A tube for a nerve monitoring endotracheal tube according to claim 3 wherein the length of the silver paste conductive coating in the length direction of the tube is between 20mm-35 mm.

5. A tube for a nerve monitoring endotracheal tube according to claim 1 or claim 2 wherein the channels are provided in at least 1 pair.

6. A tube for a nerve monitoring endotracheal tube according to claim 5 wherein the spacing between the pairs of 2 passages is between 3mm and 10 mm.

7. A tube for a nerve monitoring endotracheal tube according to claim 2 wherein the height of the arcuate raised structures is no more than 0.5mm.

8. A nerve-monitoring tracheal tube, comprising: a tube body and an electrode guide wire according to claim 3, wherein the electrode guide wire penetrates from a first opening of the tube body, passes through the channel, penetrates from a third opening and is connected with an electrode connecting wire; the electrode wire is in contact connection with the silver paste conductive coating at the second opening through a conductive substance and is connected with the electrode connecting wire to form an electric loop.

9. The nerve monitoring endotracheal tube of claim 8, wherein the electrode wire is threaded out of the third opening and connected to an electrode wire, and the connection of the electrode wire and the electrode wire is secured to the tube wall using a tubular connector.

10. The nerve monitoring tracheal cannula of claim 9, wherein the nerve monitoring tracheal cannula comprises an air bag, the air bag is provided with an inner cavity tightly matched with the tube body, the tube body can pass through the inner cavity of the air bag to enable the air bag to be fixed at any position of the tube body, one end of the outer wall of the air bag and the inner cavity form a spherical top, the other end of the outer wall of the air bag and the inner cavity form a tail with gradually reduced section diameter, the air bag is in a water drop-shaped structure, the outer wall of the air bag and the inner cavity are integrally formed into a sealed inflatable air chamber, and the tail of the air bag is arranged at the lower section of the tube body.