Flexible patch electrode for monitoring recurrent laryngeal nerves

Abstract

The utility model provides a flexible patch electrode for monitoring recurrent laryngeal nerves, which comprises a flexible basement membrane, a fixing sheet, release paper and a plug, the front surface of the flexible basement membrane is coated with conductive paste, the fixing sheet is attached to the front surface of the flexible basement membrane, and the release paper is attached to the back surface of the flexible basement membrane; a circuit in the plug is electrically connected with the conductive paste, and the plug is connected with external monitoring equipment; the flexible substrate film is divided into a signal acquisition area, a connection area and a joint area; the device is further provided with an insulating layer for preventing short circuit and a carbon paste layer for preventing oxidation and corrosion of the conductive paste, the insulating layer and the carbon paste layer both cover the upper layer of the conductive paste, the insulating layer is arranged in the connecting area, and the carbon paste layer is arranged in the collecting area and the connector area. And a reinforcing sheet convenient for mounting and connecting with the plug 7 is arranged on the back surface of the flexible substrate film in the joint area. According to the utility model, the problems of infirm adhesion, edge warping and the like caused by a harder base material are avoided, a patient is prevented from being scratched, and undesirable phenomena such as wrinkles, bubbles and the like caused by a soft base material can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of intraoperative nerve monitoring, specifically relates to a flexible patch electrode for monitoring recurrent laryngeal nerve. BACKGROUND

[0002] Recurrent laryngeal nerve is an important nerve of larynx, responsible for controlling the production of sound and breathing. In laryngeal surgery, recurrent laryngeal nerve may be damaged, causing hoarseness, coughing and other complications, and in severe cases, it may endanger the life safety of the patient, so it is necessary to use a recurrent patch electrode to monitor nerve activity.

[0003] When the recurrent patch electrode is inserted into the larynx of the patient together with the tracheal tube, the recurrent metal electrode forms a loop with the vocal cord muscle, and when the vocal cord muscle has muscle tremor, it will generate a muscle electrical signal, which can quickly and accurately identify the position and shape of the recurrent laryngeal nerve when used with a muscle electrical evoked device, improving the accuracy of the operation and ensuring the functional integrity of the recurrent laryngeal nerve during the operation. However, the current market recurrent patch electrode is usually hard, and the edge is easy to be warped in the human body, which can cause the laryngeal nerve of the patient to be scratched during the operation and cause certain clinical risks.

[0004] Based on the above, the utility model provides a flexible patch electrode for monitoring recurrent laryngeal nerve to solve the above problems. UTILITY MODEL CONTENT

[0005] The utility model aims at the shortage of prior art, provides a kind of flexible patch electrode for monitoring recurrent laryngeal nerve, using flexible substrate, solve the current market recurrent patch electrode substrate hard and easy to warp, the problem of scratching patient in the operation process, improve the security of use.In addition, the problem of not easy to paste of soft substrate is solved by composite base layer structure.

[0006] In order to realize the above technical purpose, the utility model adopts the following technical scheme:

[0007] The utility model provides a kind of flexible patch electrode for monitoring recurrent laryngeal nerve, including flexible base film, fixed sheet, release paper and plug;The positive surface of the flexible base film is coated with conductive paste, the fixed sheet is detachably attached to the positive surface of the flexible base film, and the release paper is detachably attached to the back of the flexible base film;The circuit in the plug is electrically connected with the conductive paste, and the plug is connected with external monitoring equipment.

[0008] As a further preferred embodiment of the utility model, the flexible base film is divided into a signal acquisition area, a connection area and a connector area;The conductive paste is continuously distributed in the signal acquisition area, the connection area and the connector area.

[0009] As a further optimization of the utility model, the device is further provided with an insulation layer for preventing short circuit, which covers the upper layer of the conductive paste.

[0010] As a further optimization of the utility model, the insulation layer is arranged in the connection area of the flexible base film.

[0011] As a further optimization of the utility model, the device is further provided with a carbon paste layer for preventing oxidation and corrosion of the conductive paste, which is coated on the upper layer of the conductive paste.

[0012] As a further optimization of the utility model, the carbon paste layer is arranged in the collection area and the joint area of the flexible base film.

[0013] As a further optimization of the utility model, the plug is connected with the joint area of the flexible base film on one side and connected with the external monitoring device on the other side.

[0014] As a further optimization of the utility model, the device is further provided with a reinforcing sheet, which is arranged in the joint area of the flexible base film and fixed on the back of the flexible base film.

[0015] As a further optimization of the utility model, the fixing sheet is arranged in the signal collection area and the connection area of the flexible base film, and is attached to the front of the flexible base film through the adhesive layer.

[0016] As a further optimization of the utility model, the release paper is arranged in the signal collection area and the connection area of the flexible base film, the back of the flexible base film is covered with back adhesive, and the release paper is attached to the back of the flexible base film through the back adhesive.

[0017] The utility model has the advantages of:

[0018] (1) The novel laryngeal return patch electrode provided by the utility model is used in cooperation with a tracheal cannula, the base material adopts a flexible film, has better softness and adhesion, avoids problems such as poor adhesion and edge lifting caused by the fact that the base material is relatively hard, and reduces the risk of scratching the patient;

[0019] (2) The fixing sheet is attached to the front of the flexible base film through the adhesive layer, the structure design in the form of the fixing sheet can improve the usability when the flexible patch electrode is pasted to the tracheal cannula, and can reduce adverse phenomena such as wrinkles and bubbles caused by the fact that the base material is relatively soft;

[0020] (3) The utility model is provided with an insulation layer and a carbon paste layer, which can prevent electrode short circuit and improve the oxidation resistance and corrosion resistance of the flexible electrode;

[0021] (4) The utility model has the advantages of reasonable design, simple structure, convenient operation and strong practicality. BRIEF DESCRIPTION OF DRAWINGS:

[0022] Figure 1 is a whole decomposition structure schematic view of the flexible patch electrode of the embodiment of the present application;

[0023] Figure 2 is a connection area sectional view of the flexible patch electrode of the embodiment of the present application;

[0024] The marks in the drawings are:

[0025] 1, flexible substrate film; 2, conductive paste; 3, insulating layer; 4, back adhesive; 5, release paper; 6, reinforcing sheet; 7, plug; 8, fixing sheet. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of protection of the present application.

[0027] Embodiment 1

[0028] The embodiment of the present application provides a flexible patch electrode for monitoring recurrent laryngeal nerve, which comprises a flexible substrate film 1, a fixing sheet 8, a release paper 5 and a plug 7. Among them, the flexible substrate film 1 is selected from a flexible film with high biological compatibility and good mechanical flexibility, which can ensure that the flexible electrode can be attached to the complex curved surface of the neck and avoid scratching the patient.

[0029] Specifically, referring to Figure 1 , the flexible substrate film 1 is divided into a signal acquisition area, a connection area and a joint area, the front surface of the flexible substrate film 1 is coated with conductive paste 2, and the conductive paste 2 is continuously distributed in the signal acquisition area, the connection area and the joint area. The conductive paste 2 has excellent electrochemical performance and biological stability, and can effectively capture the nerve electrical signal.

[0030] Referring to Figures 1-2 , in the embodiment, the fixing sheet 8 is detachably attached to the front surface of the flexible substrate film 1, and the release paper 5 is detachably attached to the back surface of the flexible substrate film 1. The line in the plug 7 is electrically connected with the conductive paste 2, the plug 7 is connected with the joint area of the flexible substrate film 1 on one hand, and connected with the external monitoring equipment on the other hand.

[0031] Referring to Figures 1-2In the embodiment, the release paper 5 is arranged on the signal acquisition area and the connecting area of the flexible substrate film 1, and the back of the flexible substrate film 1 in the area is covered with the back adhesive 4, and the release paper 5 is attached to the back of the flexible substrate film 1 through the back adhesive 4. In use, the release paper 5 in the signal acquisition area is first torn off, and is attached to the tracheal tube, and the flexible substrate film 1 in the connecting area is attached to the tracheal tube in a spiral winding manner, and attention should be paid to avoid blocking the scale values of the tracheal tube during the attachment process.

[0032] Referring to Figures 1-2 In the embodiment, the fixed sheet 8 is arranged on the signal acquisition area and the connecting area of the flexible substrate film 1, and the fixed sheet 8 is attached to the front of the flexible substrate film 1 through the adhesive layer. The purpose of arranging the fixed sheet 8 is to support the flexible substrate film 1, and to solve the problem that the flexible film is easily deformed and is inconvenient to paste. After the release paper 5 is torn off, the fixed sheet 8 on the front plays a supporting role, and avoids adverse phenomena such as wrinkles and bubbles of the flexible substrate film 1 caused by the soft material when the flexible substrate film 1 is pasted on the surface of the tracheal tube. When the signal acquisition area and the connecting area of the flexible substrate film 1 are pasted, the fixed sheet 8 on the front of the flexible substrate film 1 is torn off, and the electrode body is exposed.

[0033] Embodiment 2

[0034] The main structure of the embodiment is the same as that of embodiment 1, and the difference lies in that the embodiment further comprises an insulating layer 3 for preventing short circuit and a carbon paste layer for preventing the conductive paste 2 from being oxidized and corroded.

[0035] Specifically, referring to Figures 1-2 In the embodiment, the insulating layer 3 is arranged in the connecting area of the flexible substrate film 1, and covers the upper layer of the conductive paste 2. The arrangement of the insulating layer 3 can prevent short circuit, and can also enhance the mechanical strength of the flexible electrode.

[0036] The carbon paste layer is arranged in the acquisition area and the connecting area of the flexible substrate film 1, and is coated on the upper layer of the conductive paste 2, which can improve the oxidation resistance and corrosion resistance of the flexible electrode.

[0037] Embodiment 3

[0038] The main structure of the embodiment is the same as that of embodiment 2, and the difference lies in that the embodiment further comprises a reinforcing sheet 6.

[0039] Specifically, referring to Figure 1 The reinforcing sheet 6 is arranged in the connecting area of the flexible substrate film 1, and is fixed to the back of the flexible substrate film 1. The reinforcing sheet 6 is inseparable from the flexible substrate film 1, which is convenient for installation and connection with the plug 7, and ensures the tensile strength, enhances the connection strength between the flexible substrate film 1 and the plug 7, and prevents poor contact or breakage caused by external force during the operation.

[0040] Embodiment 4

[0041] The embodiment provides an application method of the flexible patch electrode for monitoring the recurrent laryngeal nerve described in Embodiment 3, in particular:

[0042] The flexible patch electrode is matched with a tracheal cannula. First, the release paper 5 is torn off, and the signal acquisition area of the flexible substrate film 1 is pasted on the tracheal cannula through the back adhesive 4, then the connection area of the flexible substrate film 1 is pasted on the tracheal cannula in a spiral winding mode, and attention should be paid to avoiding blocking the scale value of the cannula during the pasting process. During the pasting process, the fixing sheet 8 on the front surface of the flexible substrate film 1 serves as a support to avoid wrinkles and bubbles and other adverse phenomena caused by the soft material of the flexible substrate film 1 during pasting on the surface of the cannula.

[0043] When the signal acquisition area and the connection area of the flexible substrate film 1 are pasted, the fixing sheet 8 on the front surface of the flexible substrate film 1 is torn off, and the electrode body is exposed. Finally, the plug 7 is connected with the external monitoring device, and thus the installation of the flexible patch electrode is completed.

[0044] The utility model discloses a flexible patch electrode for monitoring the recurrent laryngeal nerve, adopts flexible substrate film, has better softness and fit degree, avoids the problem of not firm, warping and other problems caused by the relatively hard base material, reduces the risk of scratching the patient. The structure design of the fixing sheet can improve the usability of the patch electrode during pasting, and reduce the adverse phenomena such as wrinkles and bubbles caused by the soft base material.

[0045] The above is only the preferred embodiment of the utility model, the protection scope of the utility model is not only limited to the above-mentioned embodiment, all technical solutions under the idea of the utility model belong to the protection scope of the utility model, it should be pointed out that for ordinary skilled person in the art, a number of improvements and decorations without departing from the principle of the utility model should be regarded as the protection scope of the utility model.

Claims

1. A flexible patch electrode for monitoring the recurrent laryngeal nerve, characterized in that: It comprises a flexible base film (1), a fixing sheet (8), a release paper (5) and a plug (7); The front side of the flexible base film (1) is coated with a conductive paste (2), the fixing sheet (8) is detachably attached to the front side of the flexible base film (1), and the release paper (5) is detachably attached to the back side of the flexible base film (1); The circuit in the plug (7) is electrically connected to the conductive paste (2), and the plug (7) is connected to an external monitoring device.

2. The flexible patch electrode for monitoring the recurrent laryngeal nerve according to claim 1, characterized in that: The flexible base membrane (1) is divided into a signal collection area, a connection area and a connector area; The conductive paste (2) is continuously distributed in the signal collection area, the connection area and the joint area.

3. The flexible patch electrode for monitoring the recurrent laryngeal nerve according to claim 2, characterized in that: An insulating layer (3) for preventing short circuit is also provided, and the insulating layer (3) covers the upper layer of the conductive paste (2).

4. The flexible patch electrode for monitoring the recurrent laryngeal nerve according to claim 3, characterized in that: The insulating layer (3) is arranged in the connection area of ​​the flexible base film (1).

5. The flexible patch electrode for monitoring the recurrent laryngeal nerve according to claim 2, characterized in that: A carbon paste layer is also provided to prevent oxidation and corrosion of the conductive paste (2), and the carbon paste layer is coated on the upper layer of the conductive paste (2).

6. The flexible patch electrode for monitoring the recurrent laryngeal nerve according to claim 5, characterized in that: The carbon slurry layer is arranged in the collection area and the joint area of ​​the flexible base membrane (1).

7. The flexible patch electrode for monitoring the recurrent laryngeal nerve according to claim 2, characterized in that: The plug (7) is connected to the connection area of ​​the flexible substrate membrane (1) on the one hand, and is connected to an external monitoring device on the other hand.

8. The flexible patch electrode for monitoring the recurrent laryngeal nerve according to claim 2, characterized in that: A reinforcing sheet (6) is also provided, and the reinforcing sheet (6) is provided in the joint area of ​​the flexible base membrane (1) and fixed on the back side of the flexible base membrane (1).

9. The flexible patch electrode for monitoring the recurrent laryngeal nerve according to claim 2, characterized in that: The fixing sheet (8) is arranged in the signal collection area and the connection area of ​​the flexible base membrane (1), and the fixing sheet (8) is attached to the front surface of the flexible base membrane (1) via an adhesive layer.

10. The flexible patch electrode for monitoring the recurrent laryngeal nerve according to claim 2, characterized in that: The release paper (5) is arranged in the signal collection area and the connection area of ​​the flexible base film (1); the back of the flexible base film (1) is covered with a back adhesive (4); and the release paper (5) is attached to the back of the flexible base film (1) via the back adhesive (4).

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