Electrical sheet assembly and electrical nerve stimulation device

Abstract

The utility model relates to an electrical sheet subassembly and nerve electrical stimulation device, including electrical sheet, conducting wire, sheath tube and gasbag, the distal end of conducting wire is connected with the proximal end of electrical sheet, sheath tube and gasbag all sleeve the outside of conducting wire, the distal end of sheath tube is connected with the proximal end of gasbag, and the distal end of sheath tube is connected with the proximal end of gasbag. The far end of the air bag is connected with the near end of the electric sheet, an air channel is formed between the sheath tube and the wire, and the air channel is communicated with the air bag. The electric sheet is implanted into the vagus nerve in a mode of guiding a puncture needle through ultrasound, and an open operation is not needed to dissect the free vagus nerve, so that the trauma of a patient is reduced, a general anesthesia operation and a relatively large operative incision are avoided, rapid later rehabilitation is facilitated, and the opportunity of vagus nerve electrical stimulation treatment is provided for the patient who cannot bear the general anesthesia operation.

Description

Technical Field

[0001] The utility model belongs to the field of medical technology, and specifically relates to an electric sheet component and a nerve electrical stimulation device. Background Art

[0002] Vagus nerve stimulation (VNS) involves tying electrodes to the vagus nerve. A pulse generator placed under the skin in the chest stimulates the vagus nerve through the electrodes tied to the nerve. Through the vagus nerve, the electrical stimulation reaches various parts of the brain. Clinically, vagus nerve stimulation has been used to treat intractable epilepsy that is not suitable for surgical resection of the lesion.

[0003] During the operation, a straight incision is made on the inner side of the sternocleidomastoid muscle in the anterior neck to expose the deep carotid sheath, the vagus nerve is dissected and freed, and then the electrode is placed on the vagus nerve, led out through a wire, and connected to a pulse generator. During the above process, general anesthesia and open surgery are required on the patient's neck, which will leave a larger surgical incision and is not conducive to the patient's rapid recovery. Utility Model Content

[0004] In view of this, the utility model provides an electric sheet assembly and a nerve electrical stimulation device, which implants the electric sheet into the vagus nerve by means of an ultrasound-guided puncture needle, eliminating the need for open surgery to dissect the free vagus nerve, reducing the patient's trauma, avoiding general anesthesia and larger surgical incisions, facilitating rapid post-operative recovery, and providing patients who cannot withstand general anesthesia with the opportunity for vagus nerve electrical stimulation treatment.

[0005] The technical solution adopted by the utility model is:

[0006] An electric sheet assembly for stimulating the vagus nerve comprises an electric sheet, a wire, a sheath and an airbag, wherein the distal end of the wire is connected to the proximal end of the electric sheet, and the sheath and the airbag are both sleeved on the outside of the wire, wherein the distal end of the sheath is connected to the proximal end of the airbag, and the distal end of the airbag is connected to the proximal end of the electric sheet, an airway is formed between the sheath and the wire, and the airway is connected to the airbag.

[0007] Preferably, from far to near, the airbag includes a first diameter-changing section, a constant diameter section and a second diameter-changing section connected in sequence, the diameter of the first diameter-changing section gradually increases, the diameter of the second diameter-changing section gradually decreases, and the diameter of the proximal end of the first diameter-changing section, the diameter of the constant diameter section and the diameter of the distal end of the second diameter-changing section are equal.

[0008] The utility model also relates to a nerve electrical stimulation device, comprising a puncture needle, a push rod and the aforementioned electric sheet assembly, wherein a puncture channel is formed in the puncture needle, the electric sheet assembly is inserted into the puncture channel, the electric sheet is located at the distal end of the puncture channel, the proximal end of the wire passes through the proximal end of the puncture channel, the proximal end of the sheath tube passes through the proximal end of the puncture channel, the push rod is inserted into the puncture channel, and the distal end of the push rod abuts against the proximal end of the electric sheet.

[0009] Preferably, a socket is provided at the proximal end of the electrical sheet, and the distal end of the push rod is plugged into the socket.

[0010] Preferably, the number of the jacks is two, the wire is connected to the center position of the proximal end of the electrical sheet, and the two jacks are located on both sides of the center position;

[0011] The number of the push rods is two, and the two push rods are plugged into the two sockets respectively.

[0012] Preferably, the distal end of the electrical sheet is sharp.

[0013] Preferably, the needle head of the puncture needle is provided with a bevel.

[0014] Beneficial effects of the utility model:

[0015] During surgery, the electric sheet assembly needs to be used in conjunction with the puncture needle and the push rod. The needle tip of the puncture needle is inserted into the skin. After the needle tip of the puncture needle is inserted to a certain depth, the push rod is used to push the electric sheet to the distal end, so that part of the electric sheet is exposed from the puncture needle, so that the exposed part of the electric sheet can contact the tissue at the tip of the puncture needle. The puncture needle is continued to be inserted, and it is ensured that the position of the push rod relative to the puncture needle remains unchanged. Since the proximal end of the electric sheet is limited by the push rod, the position of the electric sheet relative to the puncture needle remains unchanged, so that during the process of inserting the puncture needle, the electric sheet can stimulate the surrounding tissues in real time, and the vagus nerve is stimulated. Electromyographic monitoring of the effector muscle cricothyroid muscle is used to facilitate the operator to determine whether the needle tip and electrode of the puncture needle have reached the vicinity of the vagus nerve. After the needle tip reaches the vagus nerve, the push rod is used to push the electrode at the proximal end of the electrode patch and pull the puncture needle toward the proximal end, while keeping the push rod stationary. Due to the limitation of the push rod, the electrode patch will not move proximally with the puncture needle, thereby exposing most of the electrode patch and no longer being protected by the puncture needle. The tissue will clamp the electrode patch, thereby fixing the position of the electrode patch relative to the vagus nerve. Then the puncture needle and push rod are withdrawn to achieve the purpose of implanting the electrode patch in the vagus nerve.

[0016] After the puncture needle and the push rod are removed, a sinus tract will be formed in the tissue, and the electric patch is located at the distal end of the sinus tract. The radial dimension of the sinus tract is approximately the same as that of the puncture needle. The electric patch can be located in the puncture needle because the size of the electric patch is smaller than the size of the sinus tract, which makes it possible for the electric patch to be displaced in the sinus tract, so that the electric patch cannot be located in the predetermined position. In order to solve this problem, after the puncture needle and the push rod are removed, air is inflated into the airbag to expand the airbag, and the outer wall of the airbag and the sinus tract are squeezed against each other, so that the airbag will not move relative to the sinus tract. Since the airbag is connected to the electric patch, the position of the electric patch is limited to prevent displacement of the electric patch.

[0017] When the utility model is used for vagus nerve stimulation, there is no need to make an incision in the patient's neck. Instead, the electric patch can be implanted in the designated position by inserting a puncture needle, which reduces the patient's trauma, avoids the patient from having to endure general anesthesia and a long surgical incision, and facilitates the patient's later recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and other purposes, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0019] Figure 1 It is a schematic diagram of the structure of the electric chip assembly;

[0020] Figure 2 is a cross-sectional view of an electric chip assembly;

[0021] Figure 3 is a first structural schematic diagram of a nerve electrical stimulation device;

[0022] Figure 4 is a second structural schematic diagram of the neural electrical stimulation device;

[0023] Figure 5 is a third structural schematic diagram of the neural electrical stimulation device;

[0024] Figure 6 4 is a schematic diagram of the structure of the neural electrical stimulation device.

[0025] In the figure: 1. Electrode; 2. Guide wire; 3. Sheath; 4. Air bag; 5. Puncture needle; 6. Push rod;

[0026] 11. jack; 12. first side; 13. second side;

[0027] 31. Airway;

[0028] 41. first diameter-reducing section; 42. constant diameter section; 43. second diameter-reducing section;

[0029] 51, oblique mouth; 511, first endpoint; 512, second endpoint. DETAILED DESCRIPTION

[0030] The present invention is described below based on embodiments, but the present invention is not limited to these embodiments. In the following detailed description of the present invention, some specific details are described in detail. In order to avoid confusing the essence of the present invention, known methods, processes, procedures, and components are not described in detail.

[0031] In addition, persons of ordinary skill in the art will appreciate that the drawings provided herein are for illustration purposes and are not necessarily drawn to scale.

[0032] Unless the context clearly requires otherwise, throughout the specification and claims, the words "include", "comprising" and similar words should be interpreted in an inclusive sense rather than an exclusive or exhaustive sense; that is, in the sense of "including but not limited to".

[0033] In the description of the present invention, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0034] In the present invention, the direction is defined by the surgical process, the side away from the operator during the surgery is called "far", and the side close to the operator is called "near".

[0035] See also Figure 1-Figure 6 The utility model provides an electric sheet assembly for stimulating the vagus nerve, the electric sheet assembly comprising an electric sheet 1, a wire 2, a sheath 3 and an airbag 4, the distal end of the wire 2 is connected to the proximal end of the electric sheet 1, the sheath 3 and the airbag 4 are both sleeved on the outside of the wire 2, wherein the distal end of the sheath 3 is connected to the proximal end of the airbag 4, the distal end of the airbag 4 is connected to the proximal end of the electric sheet 1, an airway 31 is formed between the sheath 3 and the wire 2, and the airway 31 is connected to the airbag 4.

[0036] During surgery, the electric sheet assembly needs to be used in conjunction with the puncture needle 5 and the push rod 6. A puncture channel is formed in the puncture needle 5, and the electric sheet assembly is inserted into the puncture channel. The electric sheet 1 is located at the distal end of the puncture channel, the proximal end of the wire 2 passes through the proximal end of the puncture channel, and the proximal end of the sheath 3 passes through the proximal end of the puncture channel. The push rod 6 is inserted into the puncture channel, and the distal end of the push rod 6 abuts against the proximal end of the electric sheet 1.

[0037] During the operation, the puncture needle 5 is inserted into the skin ( Figure 3After the needle tip of the puncture needle 5 is inserted to a certain depth (e.g., 1 cm), the push rod 6 pushes the electrode sheet 1 to the far end so that part of the electrode sheet 1 is exposed from the puncture needle 5, e.g., 10% of the electrode sheet 1 is exposed from the needle tip ( Figure 4 ), so that the exposed part of the electric sheet 1 can contact the tissue at the tip of the puncture needle 5, continue to insert the puncture needle 5, and ensure that the position of the push rod 6 relative to the puncture needle 5 remains unchanged. Due to the limitation of the proximal push rod 6 of the electric sheet 1, the position of the electric sheet 1 relative to the puncture needle 5 remains unchanged, so that during the insertion of the puncture needle 5, the surrounding tissues can be stimulated in real time through the electric sheet 1. By monitoring the electromyogram of the cricothyroid muscle, the vagus nerve effect muscle, the operator can easily determine whether the needle tip and the electrode of the puncture needle 5 have reached the vicinity of the vagus nerve. After the needle tip reaches the vagus nerve, the push rod 6 is used to push the electric sheet 1 at the proximal end of the electric sheet 1, and the puncture needle 5 is pulled proximally, and the push rod 6 is kept stationary. Due to the limitation of the push rod 6, the electric sheet 1 will not move proximally with the puncture needle 5, so that most of the electric sheet 1 is exposed, for example, 80% of the electric sheet 1 is exposed ( Figure 5 As shown in the figure, the electrode patch 1 is no longer protected by the puncture needle 5, and the tissue will clamp the electrode patch 1, so that the position of the electrode patch 1 is fixed relative to the vagus nerve, and then the puncture needle 5 and the push rod 6 are withdrawn, so that the purpose of implanting the electrode patch 1 in the vagus nerve can be achieved.

[0038] After the puncture needle 5 and the push rod are removed, a sinus tract will be formed in the tissue. At this time, the electric patch 1 is located at the distal end of the sinus tract. The radial dimension of the sinus tract is roughly the same as the radial dimension of the puncture needle 5. The electric patch 1 can be located in the puncture needle 5 because the size of the electric patch 1 is smaller than the size of the sinus tract, which makes it possible for the electric patch 1 to be displaced in the sinus tract, so that the electric patch 1 cannot be located in the predetermined position (the distal end of the sinus tract, which is also near the vagus nerve); in order to solve this problem, after the puncture needle 5 and the push rod are removed, the proximal end of the sheath 3 and the proximal end of the guide wire 2 are both located outside the body, and an airway 31 is formed between the two. Air is inflated into the airbag 4 through the airway 31, causing the airbag 4 to expand, and the outer wall of the airbag 4 is squeezed against the sinus tract, so that the airbag 4 will not move relative to the sinus tract. Since the airbag 4 is connected to the electric patch 1, the position of the electric patch 1 is limited to prevent the electric patch 1 from being displaced.

[0039] From far to near, the airbag 4 includes a first diameter-changing section 41, a constant diameter section 42 and a second diameter-changing section 43 which are connected in sequence. The diameter of the first diameter-changing section 41 gradually increases, and the diameter of the second diameter-changing section 43 gradually decreases. The diameter of the proximal end of the first diameter-changing section 41, the diameter of the constant diameter section 42 and the diameter of the distal end of the second diameter-changing section 43 are equal.

[0040] After the airbag 4 is inflated, the equal-diameter section 42 is columnar (the diameters of the equal-diameter section 42 are equal at all locations) and contacts the sinus tract.

[0041] The utility model also relates to a nerve electrical stimulation device, including a puncture needle 5, a push rod 6 and the aforementioned electric sheet assembly, wherein a puncture channel is formed in the puncture needle 5, the electric sheet assembly is inserted into the puncture channel, the electric sheet 1 is located at the distal end of the puncture channel, the proximal end of the wire 2 passes through the proximal end of the puncture channel, the proximal end of the sheath 3 passes through the proximal end of the puncture channel, the push rod 6 is inserted into the puncture channel, and the distal end of the push rod 6 abuts against the proximal end of the electric sheet 1.

[0042] The working process of the neural electrical stimulation device has been described in the previous article and will not be repeated here.

[0043] The proximal end of the electric sheet 1 is provided with a plug hole 11, and the distal end of the push rod 6 is plugged into the plug hole 11. This allows the push rod 6 to be easily separated from the electric sheet 1. After the electric sheet 1 reaches the specified position, the tissue will clamp the electric sheet 1. Therefore, when the push rod 6 is withdrawn toward the proximal end, since the electric sheet 1 is clamped by the tissue and the push rod 6 is plugged into the plug hole 11, the push rod 6 can smoothly move toward the rear end and be separated from the electric sheet 1.

[0044] There are two jacks 11 , the wire 2 is connected to the center of the proximal end of the electrical sheet 1 , and the two jacks 11 are located on both sides of the center.

[0045] There are two push rods 6 , and the two push rods 6 are plugged into the two insertion holes 11 respectively.

[0046] The two push rods 6 are connected to the electric sheet 1 at the same time, so when the two push rods 6 rotate circumferentially, they can drive the electric sheet 1 to rotate circumferentially, thereby adjusting the angle of the electric sheet 1 to ensure that the electrodes on the electric sheet 1 can face the vagus nerve.

[0047] The distal end of the electric sheet 1 is sharp. After the puncture needle 5 is exposed through the portion of the electric sheet 1, when the puncture needle 5 and the push rod 6 are pushed toward the distal side, the distal end of the electric sheet 1 is located at the farthest end of the entire nerve electrical stimulation device. Therefore, the distal end of the electric sheet 1 is set to be sharp, so that the electric sheet 1 can easily break the tissue and finally reach the vagus nerve.

[0048] The needle head of the puncture needle 5 is provided with an oblique opening 51, and the oblique opening 51 has a first end point 511 and a second end point 512, wherein the first end point 511 is the end point at the farthest end of the oblique opening 51, and the second end point 512 is the end point at the closest end of the oblique opening 51, and the line between the first end point 511 and the second end point 512 is an auxiliary line. The electric sheet 1 is a plate-like structure, so that the outer peripheral surface of the electric sheet 1 has two first surfaces 12 with a larger area and two second surfaces 13 with a smaller area, the two first surfaces 12 are arranged oppositely, and the two second surfaces 13 are arranged oppositely, and the angle of the electric sheet 1 is adjusted by two push rods 6, so that the first surface 12 is perpendicular to the auxiliary surface (the auxiliary surface refers to the surface that passes through the axis of the puncture needle and the auxiliary line at the same time), and the second surface 13 is parallel to the auxiliary surface, so that the larger first surface 12 can be exposed from the oblique opening 51, and when the puncture needle 5 is inserted into the tissue, the position and direction of the electric sheet 1 are controlled by controlling the puncture needle 5, so that the electric sheet 1 can be convenient for electrical stimulation of the vagus nerve.

[0049] It should be understood that the above-mentioned embodiments are merely illustrative and not restrictive. Without departing from the basic principles of the present invention, various obvious or equivalent modifications or substitutions that can be made by technicians in this field to the above details will be included in the scope of the claims of the present invention.

Claims

1. An electric chip assembly, characterized in that: Used to stimulate the vagus nerve, it includes an electric sheet, a wire, a sheath and an airbag, wherein the distal end of the wire is connected to the proximal end of the electric sheet, and the sheath and the airbag are both sleeved on the outside of the wire, wherein the distal end of the sheath is connected to the proximal end of the airbag, and the distal end of the airbag is connected to the proximal end of the electric sheet, an airway is formed between the sheath and the wire, and the airway is connected to the airbag.

2. The electric chip assembly according to claim 1, characterized in that: From far to near, the airbag includes a first diameter-changing section, a constant diameter section, and a second diameter-changing section connected in sequence. The diameter of the first diameter-changing section gradually increases, and the diameter of the second diameter-changing section gradually decreases. The diameter of the proximal end of the first diameter-changing section, the diameter of the constant diameter section, and the diameter of the distal end of the second diameter-changing section are equal.

3. A neural electrical stimulation device, characterized in that: It comprises a puncture needle, a push rod and the electric sheet assembly according to claim 1 or 2, wherein a puncture channel is formed in the puncture needle, the electric sheet assembly is inserted into the puncture channel, the electric sheet is located at the distal end of the puncture channel, the proximal end of the guide wire passes through the proximal end of the puncture channel, the proximal end of the sheath tube passes through the proximal end of the puncture channel, the push rod is inserted into the puncture channel, and the distal end of the push rod abuts against the proximal end of the electric sheet.

4. The neural electrical stimulation device according to claim 3, characterized in that: The proximal end of the electric sheet is provided with a plug hole, and the distal end of the push rod is plugged into the plug hole.

5. The neural electrical stimulation device according to claim 4, characterized in that: The number of the jacks is two, the wire is connected to the center position of the proximal end of the electrical sheet, and the two jacks are located on both sides of the center position; The number of the push rods is two, and the two push rods are plugged into the two sockets respectively.

6. The neural electrical stimulation device according to claim 5, characterized in that: The distal end of the electric sheet is sharp.

7. The neural electrical stimulation device according to claim 3, characterized in that: The needle head of the puncture needle is provided with an oblique opening.

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