Electrode skin fixing device

Abstract

The invention relates to the field of medical apparatus and instruments, and discloses an electrode skin fixing device, comprising: a base on which at least one electrode accommodating structure for accommodating and limiting an electrode is arranged; the screw cap is rotatably connected with the base; and the clamping mechanism is arranged between the rotary cover and the base, and when the rotary cover rotates to the locking position relative to the base, the clamping mechanism can apply pressing force to the electrode arranged in the electrode containing structure from at least one direction. According to the fixing device, the base, the rotary cover, the clamping mechanism and the locking mechanism form the fixing device matched with the neural electrode, the electrode can be stably fixed, the fixing holes symmetrically protruding in the two ends of the base are matched with a suture line to be sutured with the skin of a patient, and meanwhile when the rotary cover is rotated to the locking position, the electrode is fixed. The upper wave-shaped tooth opening and the lower wave-shaped tooth opening form horizontal clamping force through staggered protrusions, the center top ball exerts vertical pressure, and it is ensured that the electrode is kept stable on the skin.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and more particularly to electrode skin fixation devices. Background Technology

[0002] Neurostimulation is an important technique for treating a variety of refractory neurological diseases, especially in the field of short-term stimulation, such as trigeminal nerve stimulation, spinal cord stimulation, and peripheral nerve stimulation, which show promising application prospects. This type of treatment typically involves percutaneous implantation of electrodes precisely positioned in the target nerve region, applying electrical pulses to modulate nerve function.

[0003] A search revealed that CN210408422U discloses a concentric needle electrode, which includes an insulating shell. A medical wire is fixedly connected to the upper surface of the insulating shell, and a pressing connector is fixedly connected to the bottom of the insulating shell. A groove is opened at the bottom of the pressing connector, and a threaded adapter is sleeved inside the groove. A locking block is fixedly connected to the outer surface of the threaded adapter.

[0004] However, in current clinical practice, there is a lack of a dedicated skin fixation system that can be used with neuroelectrodes. Existing fixation methods are not secure and are cumbersome to operate, resulting in poor patient comfort. They also make it difficult to ensure that the electrodes remain stable throughout the treatment cycle, which can last from several hours to several days. The electrodes are prone to displacement due to patient movement or accidental traction, which directly leads to inaccurate stimulation of the target point and seriously affects the treatment effect. Summary of the Invention

[0005] (a) Technical problems to be solved In response to the shortcomings of existing technologies, this invention solves the problems of unstable and cumbersome fixation methods of fixation devices, poor patient comfort, difficulty in ensuring that electrodes remain stable throughout the treatment cycle of several hours to several days, and easy displacement due to patient movement or accidental traction. Electrode displacement directly leads to inaccurate stimulation target points, seriously affecting the treatment effect.

[0006] (II) Technical Solution To achieve the above objectives, the present invention is implemented through the following technical solutions.

[0007] Electrode skin fixation device, including: A base having at least one electrode receiving structure for accommodating and limiting electrodes; A screw cap that is rotatably connected to the base; A clamping mechanism is disposed between the cap and the base. When the cap is rotated relative to the base to the locked position, the clamping mechanism can apply a clamping force to the electrode placed in the electrode receiving structure from at least one direction to fix the electrode.

[0008] In one embodiment, the electrode receiving structure includes a first groove and a second groove disposed on opposite sides of the base, and a through hole penetrating the center of the base.

[0009] Preferably, the extending direction of the first groove and the second groove is consistent with the insertion direction of the electrode, and the electrode passes through the through hole and is installed in the first groove or the second groove.

[0010] In one embodiment, the clamping mechanism includes a cooperating wave-shaped tooth structure.

[0011] In one embodiment, the wavy tooth structure includes an upper wavy tooth disposed on the inner surface of the screw cap and a lower wavy tooth disposed on the inner surface of the base.

[0012] Preferably, the occlusal surfaces of the upper wavy teeth and the lower wavy teeth are arranged in a staggered protrusion structure.

[0013] In one embodiment, the clamping mechanism further includes a central ball located at the center of the screw cap, the central ball being configured to apply vertical pressure to the electrode surface when in the locked position.

[0014] In one embodiment, it further includes a locking mechanism disposed between the cap and the base for engaging and locking the cap and the base when the cap is rotated to the locked position.

[0015] In a preferred embodiment, the locking mechanism includes a cooperating snap-fit ​​structure.

[0016] In a preferred embodiment, the snap-fit ​​structure includes a snap-fit ​​groove disposed on the cap and a snap-fit ​​protrusion disposed on the base.

[0017] (III) Beneficial Effects This invention provides an electrode skin fixation device. Compared with the prior art, it has the following advantages: The device, consisting of a base, a screw cap, a clamping mechanism, and a locking mechanism, provides stable fixation for the nerve electrode. The base is sutured to the patient's skin via symmetrically protruding fixing holes at both ends. When the screw cap is rotated to the locked position, the upper and lower wavy teeth create a horizontal clamping force through staggered protrusions, while the central apex ball applies vertical pressure, ensuring the electrode remains stable on the skin. The screw cap is locked by vertically inserting it into the base and rotating it clockwise. Furthermore, the fixing holes in the base provide clear suture access points, eliminating the need for additional tools and simplifying the installation and disassembly process. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0020] Figure 2 This is a schematic diagram of the locked state of the present invention.

[0021] Figure 3 This is a schematic diagram of the screw cap structure of the present invention.

[0022] Figure 4 This is a schematic diagram of the base structure of the present invention.

[0023] Figure 5 This is a schematic diagram of the assembly process of the present invention.

[0024] Figure 6 This is a cross-sectional view of the locked state of the present invention.

[0025] The attached figures are labeled as follows: 1. Screw cap; 2. Base; 3. Center ball; 4. Upper wavy thread; 5. Snap-fit ​​groove; 6. First groove; 7. Fixing hole; 8. Lower wavy thread; 9. Snap-fit ​​protrusion; 10. Second groove; 11. Through hole. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Reference Figures 1-6 Electrode skin fixation device, including: The base 2 has at least one electrode receiving structure thereon for accommodating and limiting the electrode; The screw cap 1 is rotatably connected to the base 2; A clamping mechanism is disposed between the cap 1 and the base 2. When the cap 1 is rotated relative to the base 2 to the locked position, the clamping mechanism can apply a clamping force to the electrode placed in the electrode receiving structure from at least one direction to fix the electrode.

[0028] In the above technical solution, the electrode housing structure first pre-limits the electrode to prevent electrode displacement during the locking process. Combined with the multi-directional clamping force of the clamping mechanism, it can effectively prevent the electrode from shifting during the operation and postoperative treatment, ensuring that the electrode is always positioned in the target stimulation area, meeting the requirements of short-term nerve electrical stimulation for precise electrode positioning. The operation of the rotating locking of the cap 1 is simple. It only needs to be rotated 45 degrees clockwise to lock, and rotated 45 degrees in the opposite direction to unlock. This makes it easy for medical staff to quickly complete the installation and removal of the device and improve the efficiency of treatment operations.

[0029] In one embodiment, the electrode receiving structure includes a first groove 6 and a second groove 10 disposed on opposite sides of the base 2, and a through hole 11 penetrating the center of the base 2; the extending direction of the first groove 6 and the second groove 10 is consistent with the insertion direction of the electrode, and the electrode passes through the through hole 11 and is installed in the first groove 6 or the second groove 10.

[0030] Specifically, the through hole 11 through the center of the base 2 provides a guide channel for electrode insertion; the first groove 6 and the second groove 10 are located on opposite sides of the base 2 and extend in the same direction as the electrode insertion direction, so that the electrode can be placed naturally against the inner wall of the groove after passing through the through hole 11. At the same time, the design of the first groove 6 and the second groove 10 can flexibly select the installation slot according to the actual implantation position of the electrode, adapting to different treatment scenarios and electrode layout requirements.

[0031] In one embodiment, the clamping mechanism includes a cooperating wave-shaped tooth structure.

[0032] Furthermore, the wavy tooth structure includes an upper wavy tooth 4 disposed on the inner surface of the cap 1 and a lower wavy tooth 8 disposed on the inner surface of the base 2.

[0033] Specifically, the occlusal surfaces of the upper wavy tooth 4 and the lower wavy tooth 8 are arranged in a staggered protrusion structure.

[0034] The wavy tooth structure provides a firm and uniform clamping force for the electrode, preventing the electrode from shifting or rotating. The upper wavy tooth 4 and the lower wavy tooth 8, through the interlocking of the staggered protrusions, can adapt to electrodes of different diameters when the cap 1 is rotated 45 degrees clockwise to the locked position. The wavy tooth design has a certain degree of adaptability, and the staggered protrusions can adapt to electrodes of different diameters within a certain range, improving versatility.

[0035] In one embodiment, the clamping mechanism further includes a central ball 3 disposed at the center of the cap 1, the central ball 3 being configured to apply vertical pressure to the electrode surface when in the locked position.

[0036] Specifically, when the cap 1 is rotated to the locked position, the central ball 3 applies vertical pressure to the electrode surface, which can effectively limit the vertical displacement of the electrode in the direction perpendicular to the plane of the base 2, and prevent the electrode from axially moving due to treatment operations or slight patient movements; the vertical pressure can make the electrode fit more tightly against the inner wall of the first groove 6 or the second groove 10 of the base 2 and the edge of the through hole 11, reduce the gap between the electrode and the receiving structure, reduce the risk of the electrode shaking in the gap, and ensure the accuracy of electrode positioning.

[0037] In one embodiment, it further includes a locking mechanism disposed between the cap 1 and the base 2, for locking the cap 1 and the base 2 when the cap 1 is rotated to the locked position.

[0038] Furthermore, the locking mechanism includes a matching snap-fit ​​structure.

[0039] Specifically, the buckle structure includes a buckle groove 5 on the cap 1 and a buckle protrusion 9 on the base 2.

[0040] In the above technical solution, the locking mechanism can quickly lock the cap 1 and the base 2, improving the ease of operation of the device. After the cap 1 is vertically inserted into the base 2, it only needs to be rotated clockwise to complete the locking. After locking, the tight fit between the buckle groove 5 and the buckle protrusion 9 can effectively limit the relative rotation and axial separation of the cap 1 and the base 2, ensuring that the clamping mechanism continuously applies a stable horizontal clamping force and vertical pressure to the electrode.

[0041] Furthermore, the base 2 is provided with two symmetrically arranged protrusions, each with a fixing hole 7 for suturing to the patient's skin with sutures and achieving a tight fit. This prevents the base 2 from loosening or shifting and ensures that the base 2 can be firmly fixed to the patient's skin.

[0042] The following is a brief introduction to the operating principle and method of the electrode skin fixation device proposed in this application: Depending on the electrode implantation location, the first groove 6 or the second groove 10 of the base 2 is selected as the electrode installation slot. After the electrode implantation operation is completed, one end of the implanted electrode is inserted and exited through the central through hole 11 of the base 2. Then, the exited electrode is embedded into the pre-prepared first groove 6 or the second groove 10, so that the electrode fits against the inner wall of the groove. The side wall of the groove is used to complete the initial positioning of the electrode and reduce the shaking of the electrode outside the insertion direction.

[0043] Place the base 2 on the electrode inlet / outlet on the patient's skin, ensuring that the central through hole 11 of the base 2 is aligned with the electrode insertion path; take a surgical suture, pass it through the symmetrical protruding fixing holes 7 at both ends of the base 2, and suture the suture to the patient's skin to fix it, so that the base 2 fits tightly against the skin surface and prevents the base 2 from becoming loose or tilted.

[0044] Hold the cap 1 and insert it vertically into the latch at one end of the base 2, ensuring that the latching groove 5 of the cap 1 and the latching protrusion 9 of the base 2 are in the initial engagement state; rotate the cap 1 clockwise until you hear a click sound of the latch engaging. At this point, the cap 1 and the base 2 are locked together, thus completing the fixation of the electrode.

[0045] In summary, compared with the prior art, the electrode skin fixation device proposed in this application has the following advantages: The base 2, the cap 1, the clamping mechanism and the locking mechanism constitute a fixing device for the nerve electrode, which can stably fix the electrode. The fixing holes 7 with symmetrical protrusions at both ends of the base 2 are used to suture the electrode to the patient's skin. At the same time, when the cap 1 is rotated to the locked position, the upper wavy teeth 4 and the lower wavy teeth 8 form a horizontal clamping force through the staggered protrusions, and the central top ball 3 applies vertical pressure to ensure that the electrode remains stable on the skin.

[0046] The buckle can be locked by inserting the cap 1 vertically into the base 2 and rotating it clockwise. The fixing hole 7 of the base 2 provides clear stitching operation points, which can simplify the installation and disassembly process of the device without the need for additional tools.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0048] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electrode skin fixation device, characterized in that, include: The base (2) is provided with at least one electrode receiving structure for accommodating and limiting the electrode; The screw cap (1) is rotatably connected to the base (2); The clamping mechanism is disposed between the cap (1) and the base (2). When the cap (1) is rotated relative to the base (2) to the locked position, the clamping mechanism can apply a clamping force to the electrode placed in the electrode receiving structure from at least one direction to fix the electrode.

2. The electrode skin fixation device according to claim 1, characterized in that, The electrode receiving structure includes a first groove (6) and a second groove (10) disposed on opposite sides of the base (2), and a through hole (11) penetrating the center of the base (2).

3. The electrode skin fixation device according to claim 2, characterized in that, The extension direction of the first groove (6) and the second groove (10) is consistent with the insertion direction of the electrode. The electrode passes through the through hole (11) and is installed in the first groove (6) or the second groove (10).

4. The electrode skin fixation device according to claim 1, characterized in that, The clamping mechanism includes a corrugated tooth structure that cooperates with each other.

5. The electrode skin fixation device according to claim 4, characterized in that, The wavy tooth structure includes an upper wavy tooth (4) disposed on the inner surface of the screw cap (1) and a lower wavy tooth (8) disposed on the inner surface of the base (2).

6. The electrode skin fixation device according to claim 5, characterized in that, The upper wavy tooth (4) and the lower wavy tooth (8) have a staggered convex structure on their occlusal surfaces.

7. The electrode skin fixation device according to claim 1, characterized in that, The clamping mechanism also includes a central top ball (3) located at the center of the screw cap (1), the central top ball (3) being configured to apply vertical pressure to the electrode surface when in the locked position.

8. The electrode skin fixation device according to claim 1, characterized in that, Also includes: A locking mechanism is provided between the cap (1) and the base (2) to achieve locking between the cap (1) and the base (2) when the cap (1) is rotated to the locking position.

9. The electrode skin fixation device according to claim 8, characterized in that, The locking mechanism includes a matching snap-fit ​​structure.

10. The electrode skin fixation device according to claim 9, characterized in that, The buckle structure includes a buckle groove (5) on the cap (1) and a buckle protrusion (9) on the base (2).

Images