Recurrent laryngeal nerve monitoring trachea

Abstract

The utility model discloses a recurrent laryngeal nerve monitoring trachea, and relates to the technical field of medical intubation, the recurrent laryngeal nerve monitoring trachea comprises an inner tube body, the outer peripheral surface of the inner tube body is provided with a plurality of axial grooves; the sleeve bag is arranged on the inner tube body in a sleeving mode, and an air guide tube connected with the sleeve bag is contained in the corresponding axial groove; the outer tube sleeve is arranged on the peripheral face of the inner tube body in a sleeving mode, the sleeve bag is limited between the shoulder face of the inner tube body and the end face of the outer tube sleeve, an annular monitoring electrode assembly with the position capable of being adjusted in the axial direction is arranged on the outer tube sleeve, and wires connected with the monitoring electrode assembly are contained in the corresponding axial grooves. The device has the technical advantages of being low in manufacturing cost, environmentally friendly and more reliable in contact.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical intubation, in particular to a recurrent laryngeal nerve monitoring trachea. BACKGROUND

[0002] Recurrent laryngeal nerve (RLN) injury is a serious complication of thyroid surgery. The incidence of recurrent laryngeal nerve palsy caused by such surgery is 2% to 17%. Therefore, it is very important to find the cause of recurrent laryngeal nerve injury and avoid the injury. Since the 1970s, Flisberg first used electromyography (EMG) to monitor and identify the recurrent laryngeal nerve during surgery, thereby more effectively reducing the rate of recurrent laryngeal nerve injury. The principle of electromyography is that the biological stimulating electrode and the surface electrode are used as guides, when the response of the nerve to the electric stimulus changes, the muscle movement it dominates produces biological electrical activity, through certain instruments such as amplification, display, listening, and photography, etc. steps, so as to display the corresponding electromyography wave. That is, the surface electromyography electrode is placed at the vocal cord together with the tracheal catheter, and the other nerve stimulating needle electrode is used to find the recurrent laryngeal nerve. When the recurrent laryngeal nerve is found, the latter has a strong response to the electric current, making the muscle it dominates contract strongly to produce vibration, and the electrode on the surface of the muscle synchronously records the compound muscle action potential (CMAP) of the laryngeal muscle. At this time, the surgeon can observe certain electromyography waveform and listen to a special warning sound, thereby realizing intraoperative monitoring and identification of the recurrent laryngeal nerve.

[0003] The surface electromyography electrode of the recurrent laryngeal nerve monitoring trachea in the prior art is set by printing or embedding, and the wire connected with the electrode and the inflation tube connected with the air bag are arranged on the outer wall of the trachea or in the wall of the trachea. When arranged on the outer wall of the trachea, the smoothness of the trachea is poor, so the comfort is poor, and the wire may leak due to improper operation, which is dangerous to use. When arranged in the wall of the trachea, the process is complex, the combination installation procedure is complex, the production cost is high, and the fixed size of the surface electromyography electrode may not be stable enough in contact with the recurrent laryngeal nerve due to human body differences. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the present application provides a recurrent laryngeal nerve monitoring trachea to solve the technical problems of high cost of the trachea in the prior art and insufficient contact caused by the fixed size of the surface electromyography electrode after being made.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A recurrent laryngeal nerve monitoring trachea comprises:

[0007] An inner tube body, wherein a plurality of axial grooves are provided on the outer circumference of the inner tube body;

[0008] The cuff is mounted on the inner tube body, and the airway tube connected to the cuff is accommodated in the corresponding axial groove;

[0009] An outer tube sleeve is sleeved on the outer circumferential surface of the inner tube body, and the cuff is limited between the shoulder surface of the inner tube body and the end surface of the outer tube sleeve. The outer tube sleeve is provided with an annular monitoring electrode assembly whose position can be adjusted axially, and the wire connected to the monitoring electrode assembly is accommodated in the corresponding axial groove.

[0010] Furthermore, a locking shaft is provided on the monitoring electrode assembly, and a corresponding locking hole which is detachably plugged into and fits with the locking shaft is provided on the outer tube sleeve.

[0011] Furthermore, the monitoring electrode assembly includes an electrode ring, and an annular groove for installing the ring is provided on the outer peripheral surface of the outer sleeve, and the outer diameter of the ring is larger than the outer diameter of the outer sleeve.

[0012] Furthermore, the monitoring electrode assembly includes a ring, and the outer peripheral surface of the outer tube sleeve has an annular groove for the installation of the ring. The outer diameter of the ring is the same as the outer diameter of the outer tube sleeve. The ring has a plurality of through holes distributed along the circumferential direction, and an electrode sheet is provided in the through hole. The limiting foot of the electrode sheet is inserted into the avoidance groove on the inner wall of the through hole, and an elastic member is provided between the electrode sheet and the outer tube sleeve.

[0013] Furthermore, the locking shaft is fixedly connected to the corresponding electrode sheet, and the elastic member is a spring sleeved on the locking shaft.

[0014] Furthermore, a guide block capable of moving along the corresponding axial groove is provided on the inner wall of the outer sleeve.

[0015] Furthermore, one end of the outer tube sleeve close to the cuff is bonded to the inner tube body through gel, and the bonding position of the outer tube sleeve is staggered with the annular groove.

[0016] It can be seen from the above technical solution that the advantages of the utility model are:

[0017] 1. In the present application, an axial groove is machined on the outer surface of the inner tube body, and an outer tube sleeve is installed to form an installation channel for concealing the wires and the air guide tube, which makes the production and installation simple, and enables the parts to be separately recovered for reuse or recycling.

[0018] 2. In this application, a floating electrode sheet is used to enable the surface electromyography electrode to adapt within a certain size range, thereby achieving higher contact stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated in and constitute a part of this application illustrate embodiments of the application and to explain them without imposing on the application undue limitations.

[0020] Figure 1 The structural schematic diagram of the inner tube body of the application.

[0021] Figure 2 The structural schematic diagram of the outer tube sleeve of the application. Figure 1 The local enlarged view of A in the structural schematic diagram of the application.

[0022] Figure 3 The structural schematic diagram of the inner tube body of the application. Figure 2 The local enlarged view of B in the structural schematic diagram of the application.

[0023] Figure 4 The structural schematic diagram of the inner tube body of the application.

[0024] Figure 5 The structural schematic diagram of the outer tube sleeve of the application.

[0025] The structural schematic diagram of the outer tube sleeve of the application. DETAILED DESCRIPTION

[0026] To make the purpose, technical scheme and advantages of the application more clear, the application is further described in detail below in combination with embodiments and drawings. Herein, the illustrative embodiments of the application and their descriptions are used to explain the application, but not as the limitation of the application.

[0027] Reference Figures 1 to 5 As Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 shown, the embodiment provides a recurrent laryngeal nerve monitoring trachea, including an inner tube body 1, a cuff 3, an outer tube sleeve 2 sleeved on the outer peripheral surface of the inner tube body 1, a plurality of circumferentially distributed axial grooves 11 are arranged on the outer peripheral surface of the inner tube body 1, the axial grooves 11 can be machined by using existing process, such as using chiseling or cutting process; the cuff 3 is sleeved on the inner tube body 1, and the airway 6 connected with the cuff 3 is accommodated in the corresponding axial groove 11 to realize hidden installation; the cuff 3 is limited between the shoulder surface of the inner tube body 1 and the end surface of the outer tube sleeve 2, the outer tube sleeve 2 is provided with a ring-shaped monitoring electrode assembly 4 which can be adjusted in axial direction, and the wire 5 connected with the monitoring electrode assembly 4 is accommodated in the corresponding axial groove 11 to realize hidden installation.

[0028] One installation mode of the monitoring electrode assembly 4 is that the monitoring electrode assembly 4 and the outer sleeve 2 can be installed before combined installation. The monitoring electrode assembly 4 can be slid along the outer sleeve 2 by using the variability and softness of the outer sleeve 2. After the outer sleeve 2 is sleeved on the inner tube body 1, the inner tube body 1 makes the outer sleeve 2 not easy to deform, thereby increasing the friction between the outer sleeve 2 and the monitoring electrode assembly 4 or using the annular grooves 21 at different positions on the outer circumferential surface of the outer sleeve 2 to be clamped with the monitoring electrode assembly 4 to realize the locking of the monitoring electrode assembly 4.

[0029] In the embodiment of the application, another installation mode of the monitoring electrode assembly 4 is that the monitoring electrode assembly 4 is provided with a locking shaft 43, and the outer sleeve 2 is provided with a corresponding locking hole 22 which is separable and matched with the locking shaft 43 to realize the position locking of the monitoring electrode assembly 4, thereby the spacing size of the monitoring electrode assembly 4 to the cuff 3 can be adjusted according to different patients.

[0030] In the application, one structure scheme of the monitoring electrode assembly 4 is that the monitoring electrode assembly 4 includes an electrode sleeve ring 41, the locking shaft 43 is arranged on the inner wall of the sleeve ring 41, the locking shaft 43 is connected with the wire 5, the outer circumferential surface of the outer sleeve 2 has the annular groove 21 for installing the sleeve ring 41, the locking hole 22 is located on the bottom wall of the annular groove 21, the outer diameter of the sleeve ring 41 is greater than the outer diameter of the outer sleeve 2, the contact reliability is improved, and the corners of the sleeve ring 41 are arc processed.

[0031] In the application, another structure scheme of the monitoring electrode assembly 4 is that the monitoring electrode assembly 4 includes the sleeve ring 41, the outer circumferential surface of the outer sleeve 2 has the annular groove 21 for installing the sleeve ring 41, the outer diameter of the sleeve ring 41 is the same as the outer diameter of the outer sleeve 2, the sleeve ring 41 has a plurality of through holes 411 which are distributed in the circumferential direction, the electrode sheet 42 is arranged in the through hole 411, the limiting foot of the electrode sheet 42 is inserted into the avoiding groove 412 on the inner wall of the through hole 411 to prevent the electrode sheet 42 from being separated from the sleeve ring 41, and the elastic member is arranged between the electrode sheet 42 and the outer sleeve 2.

[0032] Specifically, the periphery of the electrode sheet 42 is in an arc bending shape, the corners of the electrode sheet 42 are prevented from causing harm to the human body, and the limiting foot is connected to the bending part to prevent the electrode sheet 42 from being separated from the sleeve ring 41.

[0033] In the embodiment, preferably, the locking shaft 43 is fixedly connected to the inner wall of the corresponding electrode sheet 42, the locking shaft 43 is connected with the wire 5, and the elastic member is a spring sleeved on the locking shaft 43.

[0034] In order to prevent the outer sleeve 2 from rotating in the circumferential direction, the inner wall of the outer sleeve 2 has the guide block 23 which can move along the corresponding axial groove 11 to limit the installation direction of the outer sleeve 2.

[0035] In this embodiment, the end of the outer sleeve 2 close to the sleeve cap 3 is connected to the inner tube body 1 by gel, and the adhesive position of the outer sleeve 2 is arranged in a staggered manner with the annular groove 21, wherein the gel is the gel used in tooth repair.

[0036] When using the gel, the gel is applied to the corresponding position of the inner tube body 1 before the outer sleeve 2 is sleeved in place, and the outer sleeve 2 is stationary after being moved into position, and fixedly bonded.

[0037] In this application, the end of the outer sleeve 2 can also be shrunk tightly by heat shrinkage process to realize the connection of the outer sleeve 2 and the inner tube body 1.

[0038] After the application is used, the adhesive part of the outer sleeve 2 can be cut off by scissors or other tools, so that the outer sleeve 2 can be removed, the inner tube body 1 can be cut into segments, and the sleeve cap 3 can be removed, realizing the separate recovery of the corresponding parts. The monitoring electrode assembly 4 can be removed for disinfection for repeated use, and other parts can be recycled for separate recovery and recycling, saving resources.

[0039] The above only describes the preferred embodiments of the application and is not intended to limit the application. For those skilled in the art, the embodiments of the application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A recurrent laryngeal nerve monitoring trachea, characterized in that: include: An inner tube body (1), wherein a plurality of axial grooves (11) are provided on the outer peripheral surface of the inner tube body (1); A cuff (3), wherein the cuff (3) is sleeved on the inner tube body (1), and an airway tube (6) connected to the cuff (3) is accommodated in the corresponding axial groove (11); An outer tube sleeve (2) is sleeved on the outer circumferential surface of the inner tube body (1), the cuff (3) is limited between the shoulder surface of the inner tube body (1) and the end surface of the outer tube sleeve (2), and the outer tube sleeve (2) is provided with an annular monitoring electrode assembly (4) whose position can be adjusted along the axial direction, and a wire (5) connected to the monitoring electrode assembly (4) is accommodated in the corresponding axial groove (11).

2. The recurrent laryngeal nerve monitoring trachea according to claim 1, characterized in that: The monitoring electrode assembly (4) is provided with a locking shaft (43), and the outer tube sleeve (2) is provided with a corresponding locking hole (22) that is detachably plugged into and engaged with the locking shaft (43).

3. The recurrent laryngeal nerve monitoring trachea according to claim 2, characterized in that: The monitoring electrode assembly (4) comprises an electrode collar (41); the outer peripheral surface of the outer sleeve (2) is provided with an annular groove (21) for mounting the collar (41); and the outer diameter of the collar (41) is larger than the outer diameter of the outer sleeve (2).

4. The recurrent laryngeal nerve monitoring trachea according to claim 2, characterized in that: The monitoring electrode assembly (4) comprises a collar (41), an annular groove (21) for mounting the collar (41) is provided on the outer peripheral surface of the outer sleeve (2), the outer diameter of the collar (41) is the same as the outer diameter of the outer sleeve (2), the collar (41) has a plurality of through holes (411) distributed along the circumference, an electrode sheet (42) is provided in the through hole (411), and a limiting foot of the electrode sheet (42) is inserted into a avoiding groove (412) located on the inner wall of the through hole (411), and an elastic member is provided between the electrode sheet (42) and the outer sleeve (2).

5. The recurrent laryngeal nerve monitoring trachea according to claim 4, characterized in that: The locking shaft (43) is fixedly connected to the corresponding electrode sheet (42), and the elastic member is a spring sleeved on the locking shaft (43).

6. The recurrent laryngeal nerve monitoring trachea according to claim 1, characterized in that: The inner wall of the outer sleeve (2) is provided with a guide block (23) capable of moving along the corresponding axial groove (11).

7. The recurrent laryngeal nerve monitoring trachea according to claim 4, characterized in that: One end of the outer tube sleeve (2) close to the cuff (3) is bonded to the inner tube body (1) via gel, and the bonding position of the outer tube sleeve (2) is offset from the annular groove (21).

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