Sacral nerve stimulating electrode assembly and guiding device thereof
By introducing limiting components and guiding devices into the sacral nerve stimulation electrode assembly, the problem of electrode displacement in subcutaneous tissue was solved, achieving higher stimulation accuracy, reducing surgical risks, and improving patients' quality of life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2026-04-03
AI Technical Summary
The sacral nerve stimulation electrode assembly is prone to displacement in the subcutaneous tissue, resulting in poor stimulation effect on the sacral nerve.
A sacral nerve stimulation electrode assembly was designed, comprising a stimulation electrode, a first limiting component, and a second limiting component. The first and second limiting components restrict the movement of the stimulation electrode along its axial direction, and a guiding device is used to ensure stable implantation of the electrode in the subcutaneous tissue.
It improves the accuracy of sacral nerve stimulation, reduces the risk of secondary surgery due to postoperative electrode displacement, alleviates patients' pain and financial burden, and improves their quality of life.
Smart Images
Figure CN224070967U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of medical device technology, and in particular to a sacral nerve stimulation electrode assembly and its guiding device. Background Technology
[0002] The sacral nerve stimulation electrode assembly is connected to the sacral nerve stimulator and is implanted into the sacral foramen. The sacral nerve stimulator discharges through the sacral nerve stimulation electrode assembly to stimulate the sacral nerve, effectively controlling and treating moderate to severe overactive bladder or idiopathic urinary retention.
[0003] When using a sacral nerve stimulator to stimulate the sacral nerve, the sacral nerve stimulation electrode assembly connected to it needs to be implanted into the subcutaneous tissue of the human body and extend into the sacral nerve sheath.
[0004] However, the sacral nerve stimulation electrode assembly is prone to displacement in the subcutaneous tissue, resulting in poor stimulation effect on the sacral nerve. Utility Model Content
[0005] This application provides a sacral nerve stimulation electrode assembly and guiding device to solve the problem that the sacral nerve stimulation electrode assembly is prone to displacement in subcutaneous tissue, resulting in poor stimulation effect on the sacral nerve.
[0006] This application provides a sacral nerve stimulation electrode assembly, including:
[0007] Stimulating electrodes are used to stimulate the sacral nerve;
[0008] A first limiting component is disposed on the stimulation electrode, and the first limiting component is located at the near-target end of the stimulation electrode;
[0009] A second limiting component is disposed on the stimulation electrode, the first limiting component is located at the near-target end of the stimulation electrode, and the second limiting component is disposed facing or away from the first limiting component.
[0010] The first limiting component and the second limiting component are used to restrict the movement of the stimulation electrode along its axial direction.
[0011] In one feasible implementation, the first limiting component includes a plurality of first limiting members, which are sequentially arranged along a first direction of the stimulation electrode.
[0012] In one feasible implementation, the second limiting component includes a plurality of second limiting members, which are sequentially arranged along a second direction of the stimulation electrode.
[0013] In one feasible implementation, the first limiting member includes a fixing seat and at least one limiting protrusion, the fixing seat being fixedly connected to the stimulation electrode, and at least one of the limiting protrusions being inclined along the circumference of the fixing seat.
[0014] In one feasible implementation, the first limiting member includes a plurality of limiting protrusions, which are evenly distributed along the circumference of the fixing seat.
[0015] In one feasible implementation, the first limiting member and the second limiting member are configured to have the same structure.
[0016] In one feasible implementation, the materials of the first limiting component and the second limiting component are configured as elastic materials.
[0017] In one feasible implementation, the first limiting component and the second limiting component are configured to be made of polyurethane material.
[0018] Secondly, embodiments of this application provide a sacral nerve stimulation electrode assembly guide device, which is used to embed the aforementioned sacral nerve stimulation electrode assembly into subcutaneous tissue.
[0019] In one feasible implementation, the sacral nerve stimulation electrode assembly guide device has a guide hole, the diameter of the guide hole cross-section gradually decreasing along the direction of movement of the sacral nerve stimulation electrode assembly, so as to change the shape of the first limiting component and the second limiting component.
[0020] In one feasible implementation, the guide device for the sacral nerve stimulation electrode assembly is configured to be made of a rigid, transparent plastic material.
[0021] This application provides a sacral nerve stimulation electrode assembly, including a stimulation electrode, a first limiting component, and a second limiting component. The stimulation electrode is used to stimulate the sacral nerve; the first limiting component is disposed on the stimulation electrode and located near the target end of the stimulation electrode; the second limiting component is disposed on the stimulation electrode, with the first limiting component located near the target end of the stimulation electrode, and the second limiting component is positioned opposite or away from the first limiting component; the first and second limiting components restrict the movement of the stimulation electrode along its axial direction, thereby solving the problem that the stimulation electrode is prone to displacement in subcutaneous tissue, resulting in poor stimulation effect on the sacral nerve.
[0022] This application also provides a sacral nerve stimulation electrode assembly guide device, which is used to embed the sacral nerve stimulation electrode assembly described in any of the above-mentioned embodiments into the subcutaneous tissue. It includes a sacral nerve stimulation electrode assembly of any of the above-mentioned technical solutions, and thus has all the beneficial effects of the sacral nerve stimulation electrode assembly of any of the above-mentioned technical solutions, which will not be repeated here. Attached Figure Description
[0023] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain this application and do not constitute an undue limitation of the present invention. In the drawings:
[0024] Figure 1 This is a schematic diagram of the sacral nerve stimulation electrode assembly according to an embodiment of this application;
[0025] Figure 2 yes Figure 1 A schematic diagram of the structure of the first and second limiting components;
[0026] Figure 3 This is a schematic diagram of a sacral nerve stimulation electrode assembly and a sacral nerve stimulation electrode assembly guide device according to an embodiment of this application;
[0027] Figure 4 yes Figure 3 A schematic diagram of the guiding device for the sacral nerve stimulation electrode assembly.
[0028] Explanation of reference numerals in the attached figures:
[0029] 100 - Stimulation electrode; 200 - First limiting component; 300 - Second limiting component; 400 - Sacral nerve stimulation electrode assembly guide device;
[0030] 210 - First limiting component; 310 - Second limiting component; 410 - Guide hole;
[0031] 211-Fixed base; 212-Limiting protrusion. Detailed Implementation
[0032] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application.
[0033] In the description of the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0034] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0035] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0036] The sacral nerve stimulation electrode assembly is connected to the sacral nerve stimulator and is implanted into the sacral foramen. The sacral nerve stimulator discharges through the sacral nerve stimulation electrode assembly to stimulate the sacral nerve, effectively controlling and treating moderate to severe overactive bladder or idiopathic urinary retention.
[0037] When using a sacral nerve stimulator to stimulate the sacral nerve, the sacral nerve stimulation electrode assembly connected to it needs to be implanted into the subcutaneous tissue of the human body and extend into the sacral nerve sheath.
[0038] However, the sacral nerve stimulation electrode assembly is prone to displacement in the subcutaneous tissue, resulting in poor stimulation effect on the sacral nerve.
[0039] To address the aforementioned problems, this application provides a sacral nerve stimulation electrode assembly and a guiding device. The solution provided by this application will be described in detail below with reference to the accompanying drawings.
[0040] Figure 1 This is a schematic diagram of the sacral nerve stimulation electrode assembly according to an embodiment of this application.
[0041] Reference Figure 1 As shown in the illustration, this application provides a sacral nerve stimulation electrode assembly, including a stimulation electrode 100, a first limiting component 200, and a second limiting component 300. The stimulation electrode 100 is used to stimulate the sacral nerve; the first limiting component 200 is disposed on the stimulation electrode 100 and is located at the near-target end of the stimulation electrode 100. The near-target end refers to the end used to stimulate the sacral nerve.
[0042] The second limiting component 300 is disposed on the stimulating electrode 100, and the first limiting component 200 is located near the target point end of the stimulating electrode 100. The second limiting component 300 is disposed facing or away from the first limiting component 200. The first limiting component 200 and the second limiting component 300 are used to restrict the movement of the stimulating electrode 100 along its axial direction, thereby solving the problem of easy displacement of the stimulating electrode in the subcutaneous tissue, avoiding the displacement of the contact point of the sacral nerve stimulating electrode assembly from the target point of the required stimulation, greatly improving the accuracy of sacral nerve stimulating electrode assembly stimulation; further reducing the risk of patients needing a second surgery due to postoperative displacement of the stimulating electrode, alleviating the patient's pain and economic burden, and improving the quality of life.
[0043] For example, the stimulation electrode 100 is a metal wire, and the positions where the first limiting component 200 and the second limiting component 300 are located on the stimulation electrode 100 can be configured with an intermediate insulating material. The first limiting component 200 and the second limiting component 300 can be bonded to the stimulation electrode 100.
[0044] Reference Figure 1 As shown, exemplarily, the first limiting component 200 includes a plurality of first limiting members 210, which are sequentially arranged along a first direction of the stimulating electrode 100. The second limiting component 300 includes a plurality of second limiting members 310, which are sequentially arranged along a second direction of the stimulating electrode 100. It should be noted that both the first and second directions are directions extending along the stimulating electrode 100, and the first and second directions are opposite. The first direction can be referred to... Figure 1 As shown in direction a, the second direction can be referenced. Figure 1 As shown in direction b. The first limiting component 200 is used to limit the displacement of the stimulation electrode 100 in the first direction, and the second limiting component 300 is used to limit the displacement of the stimulation electrode 100 in the second direction.
[0045] Figure 2 yes Figure 1 A schematic diagram of the structure of the first limiting member 210.
[0046] Reference Figure 2As shown, exemplarily, the first limiting member 210 includes a fixing base 211 and at least one limiting protrusion 212. The fixing base 211 is fixedly bonded to the stimulating electrode 100, and the at least one limiting protrusion 212 is inclined along the circumference of the fixing base 211. That is, the limiting protrusion 212 protrudes from the side of the fixing base 211. In other examples, the fixing base 211 and the limiting protrusion 212 are made of polyurethane and are integrally molded. The limiting protrusion 212 can extend into the subcutaneous tissue to prevent the stimulating electrode 100 from shifting.
[0047] In other examples, the first limiting member 210 includes a plurality of limiting protrusions 212, which are evenly distributed along the circumference of the fixing seat 211, thereby providing a larger gripping force and ensuring the fixing effect of the stimulation electrode 100.
[0048] Continue to refer to Figure 1 As shown, in some examples, the second limiting member 310 has the same structure as the first limiting member 210.
[0049] The first limiting member 210 and the second limiting member 310 have the same structure, only their installation directions are opposite. In this application, for ease of distinction, they are specifically named the first limiting member 210 and the second limiting member 310. In other examples, the first limiting member 210 and the second limiting member 310 have different structures; for example, the materials of the first limiting member 210 and the second limiting member 310 are different, or the number of their limiting protrusions 212 is different. For example, the material of the second limiting component 300 can be configured as an elastic material, facilitating deformation to embed into subcutaneous tissue and restrict the displacement of the stimulating electrode 100. For example, polyurethane material.
[0050] Figure 3 This is a schematic diagram of a sacral nerve stimulation electrode assembly and a sacral nerve stimulation electrode assembly guide device 400 according to an embodiment of this application; Figure 4 yes Figure 3 A schematic diagram of the sacral nerve stimulation electrode assembly guide device 400.
[0051] Reference Figure 3 and Figure 4 As shown, in a second aspect, embodiments of this application provide a sacral nerve stimulation electrode assembly guide device 400, which is used to embed a sacral nerve stimulation electrode assembly into subcutaneous tissue. The sacral nerve stimulation electrode assembly guide device 400 has a guide hole 410. Along the direction of movement of the sacral nerve stimulation electrode assembly, the diameter of the guide hole 410 gradually decreases to change the shape of the first limiting component 200 and the second limiting component 300, thereby allowing the first limiting component 210 and the second limiting component 310 to embed into the subcutaneous tissue. It should be noted that the direction of movement of the stimulation electrode can be referred to... Figure 4As shown in direction c in the diagram. That is to say, the guide hole 410 is tapered.
[0052] The sacral nerve stimulation electrode assembly guide device 400 ensures the normal implantation of the stimulation electrode 100. It allows the first limiting member 210 and the second limiting member 310 on the stimulation electrode 100 to deform during the implantation process, so that they can be successfully implanted into the subcutaneous tissue, ensuring that the stimulation electrode 100 is securely fixed.
[0053] The distal end of the stimulating electrode 100 enters the guide hole 410 through the large opening end of the sacral nerve stimulating electrode assembly guide device 400, until the distal end of the stimulating electrode 100 enters the sheath through the small opening end of the guide hole 410. As the stimulating electrode 100 passes through the guide hole 410, the sacral nerve stimulating electrode assembly moves along the guide hole 410 from the radial direction to the small diameter direction, and the diameter of the guide hole 410 gradually decreases. The first limiting component 200 and the second limiting component 300 of the stimulating electrode 100 are both subjected to an inward compressive force from the inner wall of the sacral nerve stimulating electrode assembly guide device 400. The limiting protrusions on the first limiting component 200 and the second limiting component 300 tend to tighten from the outside to the inside. During the process of entering the sheath through the sacral nerve stimulating electrode assembly guide device 400, the two components will not undergo structural deformation that would reduce their anchoring force, thus protecting the integrity of the stimulating electrode 100 after the sacral nerve electrode is implanted.
[0054] In some examples, the sacral nerve stimulation electrode assembly guide device 400 is made of a rigid, transparent plastic material, making it fully visible whether the shape of the first limiting component 200 and the second limiting component 300 of the sacral nerve stimulation electrode assembly deforms as they move within the guide device 400. Understandably, the sacral nerve stimulation electrode assembly guide device 400 allows for quick connection to the catheter sheath without compromising ease of operation.
[0055] It is readily understood that, based on the several embodiments provided in this application, those skilled in the art can combine, split, or reorganize the embodiments of this application to obtain other embodiments, none of which exceed the protection scope of this application.
[0056] The above detailed embodiments further illustrate the purpose, technical solution, and beneficial effects of the embodiments of this application. It should be understood that the above are merely specific embodiments of the embodiments of this application and are not intended to limit the protection scope of the embodiments of this application. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solutions of the embodiments of this application should be included within the protection scope of the embodiments of this application.
Claims
1. A sacral nerve stimulation electrode assembly, comprising: include: Stimulation electrode (100) is used to stimulate the sacral nerve; A first limiting component (200) is disposed on the stimulation electrode (100), and the first limiting component (200) is located at the near-target end of the stimulation electrode (100); A second limiting component (300) is disposed on the stimulation electrode (100), the first limiting component (200) is located at the near-target end of the stimulation electrode (100), and the second limiting component (300) is disposed facing or away from the first limiting component (200). The first limiting component (200) and the second limiting component (300) are used to restrict the movement of the stimulation electrode (100) along its axial direction.
2. The sacral nerve stimulation electrode assembly of claim 1, wherein, The first limiting component (200) includes a plurality of first limiting members (210), which are arranged sequentially along a first direction of the stimulation electrode (100).
3. The sacral nerve stimulation electrode assembly of claim 2, wherein, The second limiting component (300) includes a plurality of second limiting members (310), which are arranged sequentially along the second direction of the stimulation electrode (100).
4. The sacral nerve stimulation electrode assembly of claim 2, wherein, The first limiting member (210) includes a fixing seat (211) and at least one limiting protrusion (212). The fixing seat (211) is fixedly connected to the stimulation electrode (100), and at least one limiting protrusion (212) is inclined along the circumference of the fixing seat (211).
5. The sacral nerve stimulation electrode assembly of claim 4, wherein, The first limiting member (210) includes a plurality of limiting protrusions (212), which are evenly distributed along the circumference of the fixing seat (211).
6. The sacral nerve stimulation electrode assembly of claim 3, wherein, The first limiting member (210) and the second limiting member (310) are configured to have the same structure.
7. The sacral nerve stimulation electrode assembly of claim 1, wherein, The first limiting component (200) and the second limiting component (300) are made of elastic material.
8. The sacral nerve stimulation electrode assembly of claim 6, wherein, The first limiting component (200) and the second limiting component (300) are made of polyurethane material.
9. A sacral nerve stimulation electrode assembly guide device, characterized by, The sacral nerve stimulation electrode assembly guide device is used to implant the sacral nerve stimulation electrode assembly as described in any one of claims 1-8 into the subcutaneous tissue.
10. The sacral nerve stimulation electrode assembly guide of claim 9, wherein, The sacral nerve stimulation electrode assembly guide device (400) has a guide hole (410). Along the direction of movement of the sacral nerve stimulation electrode assembly, the diameter of the cross section of the guide hole (410) gradually decreases to change the shape of the first limiting component (200) and the second limiting component (300).
11. The sacral nerve stimulation electrode assembly guide of claim 9, wherein, The sacral nerve stimulation electrode assembly guide device (400) is made of rigid transparent plastic material.