Electrical nerve stimulation device
The electroplate was implanted into the vagus nerve through ultrasound-guided puncture needle, which solved the problem that existing vagus nerve stimulation surgery required open surgery, achieved electrical vagus nerve stimulation without general anesthesia and large incisions, and promoted rapid recovery of patients.
Patent Information
- Application Number
- CN202421194039.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-29
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-05-29
AI Technical Summary
Existing vagus nerve stimulation requires open surgical dissection of the free vagus nerve, which causes patients to undergo general anesthesia and large surgical incisions, affecting rapid recovery.
The electric film is implanted into the vagus nerve via ultrasound-guided puncture needle to avoid open surgery and reduce the risk of trauma and anesthesia.
No general anesthesia and large incisions are required to reduce patient trauma, promote rapid recovery, and provide opportunities for vagus nerve stimulation treatment for patients who cannot withstand general anesthesia.
Smart Images
Figure CN222788315U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of medical technology, and in particular relates to 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 a nerve electrical stimulation device, which implants an electrical patch into the vagus nerve by means of an ultrasound-guided puncture needle. There is no need for open surgery to dissect the free vagus nerve, which reduces the trauma of the patient, avoids general anesthesia and larger surgical incisions, facilitates rapid post-operative recovery, and provides 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] A neural electrical stimulation device for stimulating the vagus nerve comprises a puncture needle, an electric sheet, a wire and a push rod, wherein a puncture channel is formed in the puncture needle, the distal end of the wire is connected to the proximal end of the electric sheet, the electric sheet is arranged in the puncture channel, the wire is passed through the puncture channel, the proximal end of the wire passes through the proximal end of the puncture channel, the push rod is passed through the puncture channel, and the distal end of the push rod abuts against the proximal end of the electric sheet.
[0007] Preferably, the push rod includes a push piece and a push rod, the push piece is an annular structure, a avoidance hole is provided in the center of the push piece, the push rod is a rod-shaped structure, the distal end of the push rod is connected to the push piece, the outer diameter of the push piece matches the inner diameter of the puncture channel, and the proximal end of the electric sheet abuts against the push piece; the wire passes through the avoidance hole.
[0008] Preferably, a mounting groove is provided on the distal side of the push piece, and the proximal end of the electric piece is plug-connected to the mounting groove.
[0009] Preferably, a slide groove is provided in the puncture channel, and the slide groove extends along the length direction of the puncture channel. A slider cooperating with the slide groove is provided on the push piece, and the two ends of the slide groove are respectively a first end and a second end, wherein the first end is the proximal end of the slide groove, and the second end is the distal end of the slide groove; the push rod has a first station and a second station in the puncture channel,
[0010] At the first station, the slider is in contact with the first end, and the electric sheet is completely located in the puncture channel;
[0011] At the second station, the slider abuts against the second end, and most of the electrical sheet extends out of the distal end of the puncture channel.
[0012] Preferably, the electric sheet is plate-shaped, the cross section of the electric sheet is rectangular, and the mounting groove is rectangular;
[0013] The needle head of the puncture needle is provided with an oblique opening, and the oblique opening has a first end point and a second end point, wherein the first end point is the end point of the oblique opening at the farthest end, and the second end point is the end point of the oblique opening at the nearest end, and the line between the first end point and the second end point is an auxiliary line, and the auxiliary line is perpendicular to the long axis direction of the mounting groove.
[0014] Preferably, the number of the slide grooves is two, and in the axial direction of the puncture channel, the positions of the two slide grooves are consistent, and the lengths of the two slide grooves are equal. The number of the sliders is also two, and the two sliders are slidably matched with the two slide grooves respectively.
[0015] Preferably, in the radial direction of the puncture channel, the two slide grooves are arranged opposite to each other.
[0016] Preferably, there are two push rods, and in the radial direction of the push plate, the two push rods are arranged opposite to each other.
[0017] Beneficial effects of the utility model:
[0018] During the operation, 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 electrode sheet is pushed to the distal end through the push rod, so that part of the electrode sheet is exposed from the puncture needle, so that the exposed part of the electrode 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. Due to the restriction of the proximal push rod of the electrode sheet, the position of the electrode sheet relative to the puncture needle remains unchanged, so that during the process of inserting the puncture needle, the electrode sheet can stimulate the surrounding tissues in real time, and the cricothyroid muscle, the muscle of the vagus nerve effector muscle, can be stimulated. Electrogram monitoring 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 patch 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. The puncture needle and push rod are then withdrawn to achieve the purpose of implanting the electrode patch in the vagus nerve.
[0019] When using the neuroelectric stimulation device of the utility model to perform 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 undergoing general anesthesia and a long surgical incision, and facilitates the patient's later recovery. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] 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:
[0021] Figure 1 It is a schematic diagram of the structure of the neural electrical stimulation device at the first workstation;
[0022] Figure 2 It is a schematic diagram of the structure of the nerve electrical stimulation device when a part of the electric sheet is exposed to the needle;
[0023] Figure 3 It is a schematic diagram of the structure of the neural electrical stimulation device at the second workstation;
[0024] Figure 4 It is a schematic diagram of the structure of the ejector rod and the electric sheet;
[0025] Figure 5 It is a cross-sectional view of the puncture needle.
[0026] In the figure: 1. puncture needle; 2. ejector rod; 3. guide wire; 4. electric sheet;
[0027] 11. Oblique mouth;
[0028] 21. Push piece; 22. Push rod; 23. Avoidance hole; 24. Mounting slot;
[0029] 41. First side; 42. Second side;
[0030] 111. First endpoint; 112. Second endpoint. DETAILED DESCRIPTION
[0031] 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.
[0032] 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.
[0033] 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".
[0034] 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.
[0035] 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".
[0036] See also Figure 1-Figure 5 The utility model provides a neural electrical stimulation device for stimulating the vagus nerve, comprising a puncture needle 1, an electric sheet 4, a wire 3 and a push rod 2, wherein a puncture channel is formed in the puncture needle 1, the distal end of the wire 3 is connected to the proximal end of the electric sheet 4, the electric sheet 4 is arranged in the puncture channel, the wire 3 is inserted into the puncture channel, the proximal end of the wire 3 passes through the proximal end of the puncture channel, the push rod 2 is inserted into the puncture channel, and the distal end of the push rod 2 abuts against the proximal end of the electric sheet 4.
[0037] During the operation, the electric sheet 4 is pre-set in the puncture channel, the wire 3 is led out from the proximal end of the puncture channel, and the push rod 2 is inserted into the puncture channel from the proximal end of the puncture channel until the distal end of the push rod 2 abuts against the proximal end of the electric sheet 4. At this time, the electric sheet 4 is still completely in the puncture channel. In this state, the puncture needle 1 is inserted into the patient's tissue (fat tissue). After a certain depth of insertion (for example, 1 cm), during this process, the relative positions of the puncture needle 1, the electric sheet 4 and the push rod 2 remain unchanged. At this time, the needle tip of the puncture needle 1 has not reached the vagus nerve. The position of the puncture needle 1 is kept unchanged, and the push rod 2 is pushed toward the distal side. The push rod 2 pushes the electric sheet 4 to move toward the distal side and makes a part of the electric sheet 4 expose the needle tip, for example, 10% of the electric sheet 4 exposes the needle tip. In this way, the electric sheet 4 can perform external electrical stimulation and monitor the electromyogram of the cricothyroid muscle, the vagus nerve effector muscle. If the electric sheet 4 does not contact the vagus nerve, there will be no muscle feedback. When the sheet 4 contacts the vagus nerve, there will be a corresponding reaction, thereby judging whether the electric sheet 4 is delivered in place, and continuing to push the puncture needle 1 and the push rod 2 toward the distal side (the relative positions of the puncture needle 1 and the push rod 2 remain unchanged), the push rod 2 will push the electric sheet 4 to move toward the distal end together, until the electric sheet 4 reaches the vicinity of the vagus nerve (the electric sheet 4 can electrically stimulate the vagus nerve and produce corresponding muscle reactions, which can be specifically judged by electromyography); after reaching the vicinity of the vagus nerve, the puncture needle 1 is pulled toward the proximal end, and the push rod 22 is kept stationary. Due to the limitation of the push rod 22, the electric sheet 4 will not move toward the proximal end with the puncture needle 1, so that most of the electric sheet 4 is exposed from the needle tip, for example, 80% of the electric sheet 4 is exposed, and most of the electric sheet 4 is no longer protected by the puncture needle 1, and the tissue will clamp the electric sheet 4, so that the position of the electric sheet 4 is fixed relative to the vagus nerve, and then the puncture needle 1 and the push rod 2 are withdrawn, and the purpose of implanting the electric sheet 4 at the vagus nerve can be achieved.
[0038] After the puncture needle 1 and the push rod 2 are withdrawn, a sinus tract will be formed in the tissue, the distal end of the sinus tract is an electric patch 4, and the wire 3 is led out of the body along the sinus tract so as to be connected to the pulse generator.
[0039] In the process of implanting the electric patch 4, there is no need to make an incision in the patient's neck. Instead, the electric patch 4 can be implanted in the designated position by inserting the puncture needle 1, which reduces the patient's trauma, avoids leaving a long surgical incision, and facilitates the patient's later recovery.
[0040] The push rod 2 includes a push piece 21 and a push rod 22. The push piece 21 is a ring-shaped structure. A avoidance hole 23 is provided in the center of the push piece 21. The push rod 22 is a rod-shaped structure. The distal end of the push rod 22 is connected to the push piece 21. The outer diameter of the push piece 21 matches the inner diameter of the puncture channel. The proximal end of the electric sheet 4 abuts against the push piece 21. The wire 3 passes through the avoidance hole 23.
[0041] The push rod 22 is fixedly connected to the push piece 21. The push piece 21 is in a circular shape with an avoidance hole 23 formed in the middle. Therefore, when the electric sheet 4 is supported by the push rod 2, the push piece 21 is in direct contact with the electric sheet 4. The connection point between the wire 3 and the electric sheet 4 is just located in the avoidance hole 23. Therefore, the wire 3 can just pass through the avoidance hole 23 and ensure that when the push rod 2 is withdrawn, the push piece 21 will not drag the wire 3, thereby ensuring that the position of the electric sheet 4 is at the predetermined position.
[0042] The setting of the push piece 21 can form a larger contact surface facing the distal side, ensuring that the push rod 2 can contact the electric piece 4 to limit the position of the electric piece 4 and ensure the smooth progress of the operation.
[0043] A mounting groove 24 is provided on the distal side of the push piece 21 , and the proximal end of the electric piece 4 is plug-connected with the mounting groove 24 .
[0044] The electric sheet 4 is inserted into the mounting groove 24 so that the electric sheet 4 will not flip over in the puncture channel. Therefore, the angle of the electric sheet 4 can be adjusted by controlling the angle of the push rod 2 (the angle of the push sheet 21) to ensure that the electrodes on the electric sheet 4 can face the vagus nerve.
[0045] A slide groove is provided in the puncture channel, and the slide groove extends along the length direction of the puncture channel. A sliding block cooperating with the slide groove is provided on the push piece 21, and the two ends of the slide groove are respectively a first end and a second end, wherein the first end is the proximal end of the slide groove, and the second end is the distal end of the slide groove; the push rod 22 has a first station and a second station in the puncture channel.
[0046] At the first station, the slider is in contact with the first end, and the electrical sheet 4 is completely located in the puncture channel.
[0047] At the second station, the slider abuts against the second end, and most of the electrical sheet 4 extends out of the distal end of the puncture channel.
[0048] A slider is connected to the outer periphery of the push piece 21, and the slider cooperates with the slide groove so that the push piece 21 cannot rotate in the circumferential direction, and the electric piece 4 is inserted into the mounting groove 24 so that the circumferential angle of the electric piece 4 is fixed. Therefore, when the electric piece 4 is pushed toward the distal side, it is ensured that the electric piece 4 is pushed out at a specified angle so that the electrode on the subsequent electric piece 4 is just facing the vagus nerve.
[0049] During the operation, the push rod 22 is in the first working position. At this time, the electric sheet 4 is completely in the puncture channel. After being inserted into the patient's tissue, the push rod 2 is pushed toward the distal side, so that a part of the electric sheet 4 is exposed from the needle tip. Then, the relative position of the push rod 2 and the puncture needle 1 remains unchanged, and the two are pushed toward the distal side together until the electric sheet 4 reaches the vagus nerve, and the puncture needle 1 is pulled toward the rear end side. The push rod 22 is kept stationary, and the slide groove moves toward the rear end side relative to the slider until the second end of the slide groove abuts against the slider (second working position). At this time, most of the electric sheet 4 is exposed from the needle tip, and the puncture needle 1 continues to be pulled toward the rear end side. Since the slider abuts against the second end, the push rod 2 can be driven to move toward the rear end together, thereby achieving the purpose of withdrawing the puncture needle 1 and the push rod 2 at the same time.
[0050] The electric sheet 4 is plate-shaped, the cross section of the electric sheet 4 is rectangular, and the mounting groove 24 is rectangular;
[0051] The needle head of the puncture needle 1 is provided with an oblique opening 11, and the oblique opening 11 has a first endpoint 111 and a second endpoint 112, wherein the first endpoint 111 is the farthest endpoint of the oblique opening 11, and the second endpoint 112 is the closest endpoint of the oblique opening 11, and the line between the first endpoint 111 and the second endpoint 112 is an auxiliary line, and the auxiliary line is perpendicular to the long axis direction of the mounting groove 24.
[0052] Since the electric sheet 4 is a plate-like structure, the outer peripheral surface of the electric sheet 4 has two first surfaces 41 with larger areas and two second surfaces 42 with smaller areas. The two first surfaces 41 are arranged opposite to each other, and the two second surfaces 42 are arranged opposite to each other. The first surface 41 intersects with the auxiliary line, and the second surface 42 is parallel to the auxiliary line, so that the larger first surface 41 can be exposed from the oblique mouth 11. When the puncture needle 1 is inserted into the tissue, the position and direction of the electric sheet 4 can be controlled by controlling the puncture needle 1, so that the electric sheet 4 can electrically stimulate the vagus nerve.
[0053] There are two slide grooves, and in the axial direction of the puncture channel, the positions of the two slide grooves are consistent, and the lengths of the two slide grooves are equal. There are also two sliders, and the two sliders are respectively slidably matched with the two slide grooves.
[0054] The two slide grooves can improve the stability of the push piece 21 when it slides, avoid the push piece 21 from rotating when it slides, and ensure that the electric piece 4 extends out of the puncture needle 1 at a specified angle.
[0055] In the radial direction of the puncture channel, the two slide grooves are arranged opposite to each other.
[0056] There are two push rods 22, and the two push rods 22 are arranged opposite to each other in the radial direction of the push plate 21. Two push rods 22 are also arranged to improve the structural stability of the entire push rod 2.
[0057] 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. A neural electrical stimulation device, characterized in that: Used to stimulate the vagus nerve, it includes a puncture needle, an electric sheet, a wire and a push rod, a puncture channel is formed in the puncture needle, the distal end of the wire is connected to the proximal end of the electric sheet, the electric sheet is arranged in the puncture channel, the wire is inserted into the puncture channel, the proximal end of the wire 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.
2. The neural electrical stimulation device according to claim 1, characterized in that: The push rod includes a push piece and a push rod. The push piece is an annular structure. A avoidance hole is provided in the center of the push piece. The push rod is a rod-shaped structure. The distal end of the push rod is connected to the push piece. The outer diameter of the push piece matches the inner diameter of the puncture channel. The proximal end of the electric sheet abuts against the push piece. The wire passes through the avoidance hole.
3. The neural electrical stimulation device according to claim 2, characterized in that: A mounting groove is provided on the distal side of the push piece, and the proximal end of the electric piece is plug-connected with the mounting groove.
4. The neural electrical stimulation device according to claim 3, characterized in that: A slide groove is provided in the puncture channel, and the slide groove extends along the length direction of the puncture channel. A slider matching the slide groove is provided on the push piece, and the two ends of the slide groove are respectively a first end and a second end, wherein the first end is the proximal end of the slide groove, and the second end is the distal end of the slide groove; the push rod has a first station and a second station in the puncture channel, At the first station, the slider is in contact with the first end, and the electric sheet is completely located in the puncture channel; At the second station, the slider abuts against the second end, and most of the electrical sheet extends out of the distal end of the puncture channel.
5. The neural electrical stimulation device according to claim 4, characterized in that: The electric sheet is plate-shaped, the cross section of the electric sheet is rectangular, and the mounting groove is rectangular; The needle head of the puncture needle is provided with an oblique opening, and the oblique opening has a first end point and a second end point, wherein the first end point is the end point of the oblique opening at the farthest end, and the second end point is the end point of the oblique opening at the nearest end, and the line between the first end point and the second end point is an auxiliary line, and the auxiliary line is perpendicular to the long axis direction of the mounting groove.
6. The neural electrical stimulation device according to claim 4, characterized in that: There are two slide grooves, and in the axial direction of the puncture channel, the positions of the two slide grooves are consistent, and the lengths of the two slide grooves are equal. There are also two sliders, and the two sliders are respectively slidably matched with the two slide grooves.
7. The neural electrical stimulation device according to claim 6, characterized in that: In the radial direction of the puncture channel, the two slide grooves are arranged opposite to each other.
8. The neural electrical stimulation device according to claim 2, characterized in that: The number of the push rods is two, and the two push rods are arranged opposite to each other in the radial direction of the push plate.