Connecting sheath and electrode assembly

Abstract

The utility model discloses a connecting sheath and an electrode assembly. The connecting sheath is used for being arranged at the joint of an electrode wire and an extension wire and comprises a sheath body and a wire bunching part. A channel used for containing an electrode wire and an extension wire is formed in the sleeve body, and the sleeve body is provided with a first connecting end and a second connecting end which are opposite. The wire binding part is arranged on the outer side of the first connecting end and / or the second connecting end in the circumferential direction of the sleeve body and used for containing a binding wire and binding and fixing the sleeve body of the first connecting end and / or the second connecting end to the electrode wire and / or the extension wire. When the connecting sheath is bound, a binding wire is wound along the first concave part and the second concave part, so that a doctor can conveniently identify the number of binding turns of the binding wire, and it is ensured that the binding wire of enough turns can be bound at the two ends of the sheath body to ensure that the positions of the connecting sheath on an electrode wire and a connecting wire are stable; and meanwhile, the binding wire is accommodated in the first concave part and / or the second concave part to form a dense winding structure, so that the binding wire can be ensured to be stable on the sleeve body.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a connecting sheath and electrode assembly. Background Technology

[0002] In most current DBS (Deep Brain Stimulation) systems, extension leads transmit signals by connecting the IPG (Implantable Pulse Generator) and electrode leads. The connection between the extension lead and the electrode leads is typically sealed and waterproofed by adding a protective sleeve and securing both ends with cable ties.

[0003] In the prior art, protective sleeves used for connecting extension wires and electrode wires are mostly made by adding raised O-shaped ribs to the outer wall or by having a smooth inner wall or raised O-shaped ribs on the inner wall. Moreover, the inner wall is mostly clearance-fitted with the extension wire or electrode wire to reduce the installation force when inserted into the protective sleeve.

[0004] (1) When O-shaped ribs are added to the outer wall of the protective sheath, on the one hand, the sutures cross the protruding ribs, and the doctor is not sure how many times to tie them, which can easily lead to them not being tied tightly; on the other hand, the exposed part of the sutures protrudes more from the outer surface of the sheath, which can easily cause the diameter of the body to increase after the extension wire is tied, affecting the patient's comfort.

[0005] (2) When the inner wall of the protective sleeve is smooth, the protective sleeve itself is in close fit with the extension wire or electrode wire. In the compression area after tying, gaps are easily formed, causing tissue fluid leakage and product failure.

[0006] (3) When there are O-shaped ribs on the inner wall of the protective sleeve, it is difficult to insert the electrode wire or extension wire due to the interference fit of the ribs.

[0007] To address at least one of the aforementioned problems, this application proposes a connecting sheath and an electrode assembly. Utility Model Content

[0008] The purpose of this invention is to provide a connecting sheath and electrode assembly, which makes it easier for doctors to determine the number of ligatures, improves the stability of the ligatures on the connecting sheath, and avoids the ligatures being exposed and affecting patient comfort.

[0009] The objective of this utility model is achieved through the following technical solution:

[0010] This application provides a connecting sleeve for use at the connection between an electrode wire and an extension wire, including a sleeve body and a wire bundle portion.

[0011] The sleeve has a channel inside for accommodating the electrode wire and the extension wire, and the sleeve has a first connecting end and a second connecting end opposite to each other.

[0012] The wire harness is arranged circumferentially around the sleeve body outside the first connecting end and / or the second connecting end, for accommodating the binding wire, and the binding wire is used to bind and fix the sleeve body having the first connecting end and / or the second connecting end to the electrode wire and / or extension wire.

[0013] The wire harness includes a first recess and / or a second recess provided at the first connecting end and / or the second connecting end, and the wire is used to tie and fix both ends of the sleeve along the first recess and / or the second recess.

[0014] Preferably, when the sleeve is tied and fixed to the electrode wire and / or extension wire, the binding wire in the first recess and / or the second recess does not protrude from the outer surface of the sleeve at the first connection end and / or the second connection end.

[0015] Preferably, the first recess is at least one ring-shaped inner groove located on the outer side of the first connecting end; and / or,

[0016] The second recess is at least one ring of second annular inner grooves provided on the outside of the second connecting end.

[0017] Preferably, the first annular groove and / or the second annular groove are circular or elliptical grooves formed along the outer surface of the sleeve.

[0018] Preferably, the first recess is at least one turn of a first spiral groove located on the outer side of the first connecting end; and / or,

[0019] The second recess is a second spiral groove located on the outer side of the second connecting end.

[0020] Preferably, the sealing portion is disposed inside the first connection end and / or the second connection end, for forming a seal between the electrode wire and / or the extension wire at the first connection end and / or the second connection end respectively when the electrode wire and / or the extension wire are accommodated in the channel.

[0021] Preferably, the sealing portion includes a first protrusion and a second protrusion; the first protrusion is disposed at the first connecting end, and the second protrusion is disposed at the second connecting end.

[0022] Preferably, the first protrusion and the first recess are respectively disposed on the inner and outer sides of the first connecting end, so that a certain pressure is applied to the first protrusion during the process of binding and fixing the sleeve to the electrode wire along the first recess; and / or,

[0023] The second protrusion and the second concave portion are respectively disposed on the inner and outer sides of the second connecting end, so that a certain pressure is applied to the first protrusion during the process of binding and fixing the sleeve to the extension wire along the second concave portion.

[0024] Preferably, the electrode wire has a first connector end, and the extension wire has a second connector end that matches the first connector end, wherein the first connector end and the second connector end cooperate within a channel between the first protrusion and the second protrusion.

[0025] Preferably, the first protrusion is at least one ring of first annular raised ribs disposed inside the first connecting end; and / or,

[0026] The second protrusion is at least one ring of second annular raised ribs disposed on the inner side of the second connecting end.

[0027] Preferably, the sleeve has a central axis, and the width of the first annular protruding rib and the second annular protruding rib along the central axis of the sleeve is L1, and L1 is greater than or equal to 0.1 mm.

[0028] Preferably, both sides of the connection between the first and second annular raised ribs and the sleeve body are rounded to allow the electrode wires and extension wires to pass smoothly through the first and second annular raised ribs, respectively; and / or,

[0029] The first and second annular raised ribs are connected to the sleeve body with rounded corners on both sides with a radius R, and R is greater than or equal to 0.1mm.

[0030] Preferably, the inner diameter of the first annular protruding rib is d0, the inner diameter of the first connecting end is d1, and the outer diameter of the first joint end is greater than d0 and less than d1.

[0031] The inner diameter of the second annular protruding rib is D0, the inner diameter of the second connecting end is D1, and the outer diameter of the second joint end is greater than D0 and less than D1.

[0032] Preferably, the first protrusion is at least one spiral raised rib disposed inside the first connecting end; and / or,

[0033] The second protrusion is at least one ring of second spiral protrusion ribs disposed inside the second connecting end.

[0034] Preferably, the sleeve has a central axis, and the width of the connection between the first spiral protruding rib and the second spiral protruding rib along the central axis of the sleeve and the sleeve is L2, and L2 is greater than or equal to 0.1mm.

[0035] Preferably, the inner diameter of the first spiral protrusion is d2, the inner diameter of the first connecting end is d3, and the outer diameter of the first joint end is greater than d2 and less than d3.

[0036] The inner diameter of the second spiral protrusion is D2, the inner diameter of the second connecting end is D3, and the outer diameter of the second joint end is greater than D2 and less than D3.

[0037] This utility model also provides an electrode assembly, including the aforementioned connecting sleeve.

[0038] Compared with the prior art, the beneficial effects of this utility model include at least the following:

[0039] When the connecting sheath is applied, the ligature is wrapped around the first and second recesses, which makes it easy for doctors to identify the number of ligature turns and ensures that the sheath can be wrapped with enough ligature turns at both ends to ensure the stability of the connecting sheath on the electrode wire and the connecting wire. At the same time, the ligature is contained in the first and / or second recesses to form a tight winding structure, which can ensure the stability of the ligature on the sheath and prevent the ligature from coming loose during the winding process.

[0040] Furthermore, during the process of binding the ligature along the first and / or second recesses to form a tightly wound structure for fixing the sheath, the ligature will not protrude from the outer surface of the connecting sheath after binding, preventing the overall circumference of the connecting sheath from increasing after binding. This is especially important after implantation into the tissue, as it can avoid increasing the patient's foreign body sensation and affecting the patient's comfort. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the structure of a connecting sleeve provided in an embodiment of this utility model;

[0042] Figure 2 This is a utility model Figure 1 A cross-sectional view of the provided connecting sleeve;

[0043] Figure 3 This is a utility model Figure 2 A schematic diagram of the structure of the first connecting end of the provided connecting sleeve;

[0044] Figure 4 This is a utility model Figure 2 A schematic diagram of the structure of the second connecting end of the provided connecting sleeve;

[0045] Figure 5 This is a schematic diagram of the structure of the first connecting end of another connecting sleeve provided in an embodiment of this utility model;

[0046] Figure 6 This is a schematic diagram of the structure of the second connecting end of another connecting sleeve provided in an embodiment of this utility model;

[0047] Figure 7 This is a schematic diagram of another connecting sleeve provided in an embodiment of the present utility model;

[0048] Figure 8 This is a utility model Figure 7 A cross-sectional view of the provided connecting sleeve;

[0049] Figure 9 This is a utility model Figure 8 A schematic diagram of the structure of the first connecting end of the provided connecting sleeve;

[0050] Figure 10 This is a utility model Figure 8 A schematic diagram of the structure of the second connecting end of the connecting sleeve provided in the embodiment;

[0051] Figure 11 This is a schematic diagram of the assembly structure of a connecting component provided in an embodiment of the present utility model;

[0052] Figure 12 This is a utility model Figure 11 A schematic diagram of the disassembly structure of the provided connection components.

[0053] In the picture:

[0054] 1. Sleeve body;

[0055] 101. First connecting end; 1011. First annular inner groove position; 1012. First spiral inner groove position; 1013. First annular protruding rib position; 1014. First spiral protruding rib position;

[0056] 102. Second connecting end; 1021. Second annular inner groove position; 1022. Second spiral inner groove position; 1023. Second annular protruding rib position; 1024. Second spiral protruding rib position;

[0057] 103. Passage;

[0058] 2. Electrode wires; 201. First connector end;

[0059] 3. Extension wire; 301. Second connector end. Detailed Implementation

[0060] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0061] The terms used to describe position and direction in this utility model are all illustrated with the accompanying drawings, but changes can be made as needed, and all such changes are included within the protection scope of this utility model.

[0062] Firstly, referring to Figures 1 to 10 This application provides a connecting sleeve for placement at the connection between the electrode wire 2 and the extension wire 3, comprising a sleeve body 1 and a wire harness portion. The sleeve body 1 can be a hollow tube, and there are no specific limitations on the material of the sleeve body 1; it can be made of materials commonly used in the art, such as medical-grade polyurethane or silicone rubber.

[0063] Specifically, the sleeve 1 has a channel 103 inside for accommodating the electrode wire 2 and the extension wire 3. The channel 103 can be the inner cavity of a hollow tube. The sleeve 1 has a first connecting end 101 and a second connecting end 102. The sleeve 1 can be configured with one end larger and the other end smaller. Specifically, in this application, the first connecting end 101 can be a small port and the second connecting end 102 can be a large port. This application uses this configuration as an example for illustration.

[0064] The suture bundle is arranged circumferentially around the outer side of the first connecting end 101 and / or the second connecting end 102 of the sleeve body 1, and is used to accommodate the suture. The suture is used to bind and fix the sleeve body 1 with the first connecting end 101 and / or the second connecting end 102 to the electrode lead wire 2 and / or the extension lead wire 3. The suture can be a surgical suture with good antibacterial properties and chemical stability, including but not limited to polypropylene, so that the sleeve body 1 can remain stable in the tissue for a long time after binding and fixing.

[0065] The wire harness includes a first recess and / or a second recess located at the first connecting end 101 and / or the second connecting end 102. A binding wire is used to secure both ends of the sleeve 1 along the first and / or second recesses. Specifically, after the binding wire secures the sleeve 1 to the electrode wire 2 and / or the extension wire 3 along the first and / or second recesses of the first connecting end 101 and / or the second connecting end 102, the binding wire is only wound within the first and / or second recesses, and the binding wire is located within the wire harness.

[0066] Therefore, when the connecting sheath is tied, the ligature is wrapped along the first and second recesses, which makes it easy for doctors to identify the number of ligature turns and ensures that the two ends of the sheath 1 can be tied with a sufficient number of ligature turns to ensure the stability of the connecting sheath on the electrode wire 2 and the extension wire 3. At the same time, the ligature is contained in the first and / or second recesses to form a tight winding structure, which can ensure the stability of the ligature on the sheath 1 and prevent the ligature from coming loose during the winding process.

[0067] In some alternative embodiments, refer to Figures 1 to 10When the sleeve 1 is secured to the electrode lead 2 and / or extension lead 3, the ties within the first and / or second recesses do not protrude from the outer surface of the sleeve 1 at the first connecting end 101 and / or the second connecting end 102. Therefore, during the process of securing the sleeve 1 by binding the ties along the first and / or second recesses to form a tightly wound structure, the ties will not protrude from the outer surface of the connecting sheath after binding, preventing the overall circumference of the connecting sheath from increasing after binding. This is especially beneficial after implantation into tissues, avoiding increased foreign body sensation and improving patient comfort.

[0068] As a preferred method, refer to Figures 1 to 6 The first recess is at least one ring of first annular inner groove positions 1011 disposed on the outer side of the first connecting end 101. And / or, the second recess is at least one ring of second annular inner groove positions 1021 disposed on the outer side of the second connecting end 102. In practical applications, at least one loop of binding wire is tied within each first annular inner groove position 1011 and each second annular inner groove position 1021.

[0069] Therefore, by setting annular grooves at both ends of the sleeve 1 of the connecting sheath, the ligature is wound along the annular grooves at both ends when the connecting sheath is tied. This makes it easy for doctors to identify the number of ligature turns, ensuring that the sleeve 1 can be tied with a sufficient number of ligature turns to ensure the stability of the connecting sheath position. At the same time, the ligature is contained in the annular groove to form a tight winding structure, which can ensure the stability of the ligature on the sleeve 1 and prevent the ligature from loosening during the winding process. Moreover, the sleeve 1 will not bulge out of the outer surface of the connecting sheath after being tied with the ligature, preventing the overall circumference of the connecting sheath from increasing after tying. Especially after implantation into the tissue, this can avoid increasing the patient's foreign body sensation and affecting the patient's comfort.

[0070] It should be noted that in practical applications, the number of rings in the first annular inner groove position 1011 and the second annular inner groove position 1021 can be increased or decreased according to the actual application scenario. The number of binding wires tied in each first annular inner groove position 1011 and the second annular inner groove position 1021 can also be increased or decreased according to the actual application scenario. However, it is necessary to ensure the stability of the position of the sleeve 1 on the electrode wire 2 and the extension wire 3, and at the same time, it is necessary to prevent the binding wires from protruding from the outer surface of the sleeve 1 and to prevent the circumference of the connecting sheath from increasing.

[0071] In a specific application, the first annular groove 1011 and / or the second annular groove 1021 are circular or elliptical annular grooves formed along the outer surface of the sleeve 1. Specifically, when the first annular groove 1011 and / or the second annular groove 1021 are circular grooves on the sleeve 1, the plane containing the annular groove is parallel to the plane containing the end of the sleeve 1; when the first annular groove 1011 and / or the second annular groove 1021 are elliptical annular grooves on the sleeve 1, the plane containing the annular groove intersects with the plane containing the end of the sleeve 1. However, regardless of whether the annular groove is circular or elliptical, the binding wire can be wound around its interior to secure both ends of the sleeve 1.

[0072] As a preferred method, refer to Figures 7 to 10 The first recess is a first spiral groove 1012 located on the outer side of the first connecting end 101. And / or, the second recess is a second spiral groove 1022 located on the outer side of the second connecting end 102. Thus, by providing spiral grooves at both ends of the sleeve 1 of the connecting sheath, the ligature is wound along the spiral grooves at both ends when the connecting sheath is tied. This makes it easy for doctors to identify the number of ligature turns, ensuring that the sleeve 1 can be tied with a sufficient number of ligature turns to ensure the stability of the connecting sheath position. At the same time, the ligature is contained in the annular groove to form a tight winding structure, which can ensure the stability of the ligature on the sleeve 1 and prevent the ligature from loosening during winding. Moreover, the sleeve 1 will not protrude from the outer surface of the connecting sheath after being tied with the ligature, preventing the overall circumference of the connecting sheath from increasing after tying. Especially after implantation into the tissue, this can avoid increasing the patient's foreign body sensation and affecting the patient's comfort.

[0073] It should be noted that in practical applications, the number of turns of the first spiral groove position 1012 and the second spiral groove position 1022 can be increased according to the actual application scenario. The number of binding wires tied in each first spiral groove position 1012 and the second spiral groove position 1022 can also be increased or decreased according to the actual application scenario. However, it is necessary to ensure the stability of the sleeve 1 on the electrode wire 2 and the extension wire 3, and at the same time, prevent the binding wires from protruding from the outer surface of the sleeve 1 and prevent the circumference of the connecting sheath from increasing.

[0074] Furthermore, in other embodiments, the first and second recesses can also be a combination of annular grooves and threaded grooves. For example, the first recess can be an annular groove and the second recess a threaded groove, or the first recess can be a threaded groove and the second recess an annular groove. In this way, the ligature, through the combination of annular and threaded grooves, can also secure both ends of the sleeve 1 to the electrode wire 2 and the extension wire 3. This also essentially achieves the effect of stabilizing the position of the connecting sheath when using either annular or threaded grooves simultaneously, and avoiding the increase in ligature diameter that could affect patient comfort.

[0075] In some alternative embodiments, refer to Figures 1 to 8 A sealing portion is disposed inside the first connecting end 101 and / or the second connecting end 102, for forming a seal between the electrode wire 2 and / or the extension wire 3 at the first connecting end 101 and / or the second connecting end 102 respectively when the electrode wire 2 and / or the extension wire 3 are accommodated in the channel 103. Specifically, a first sealing surface can be formed at the connection between the first connecting end 101 of the sleeve 1 and the electrode wire 2, and a second sealing surface can be formed at the connection between the second connecting end 102 of the sleeve 1 and the extension wire 3. After the electrode wire 2 and the extension wire 3 are inserted into the channel 103, when the first connecting end 101 and the second connecting end 102 are tied with a binding wire, the sealing portion can prevent gaps from forming between the first connecting end 101 and / or the second connecting end 102 of the sleeve 1 during the tying process, thereby achieving a seal at the end of the connecting sheath, preventing tissue fluid from leaking into the channel 103 and affecting the signal connection of the electrode wire 2 and the extension wire 3, and avoiding adverse effects such as product malfunction.

[0076] As a preferred method, refer to Figures 1 to 10 The sealing part includes a first protrusion and / or a second protrusion; the first protrusion is disposed at the first connecting end 101; and / or, the second protrusion is disposed at the second connecting end 102. The first protrusion and / or the second protrusion can be correspondingly matched with the outer surface of the electrode wire 2 and / or the extension wire 3 to avoid gaps at the end of the sleeve 1 when it is fixed, and to prevent leakage of tissue fluid.

[0077] In a specific application, refer to Figure 5 and Figure 6The first convex portion and the first concave portion are respectively disposed on the inner and outer sides of the first connecting end 101, so that a certain pressure is applied to the first convex portion during the process of binding and fixing the sleeve 1 to the electrode wire 2 along the first concave portion, that is, aligning the first convex portion and the first concave portion on the inner and outer sides of the sleeve 1; and / or, the second convex portion and the second concave portion are respectively disposed on the inner and outer sides of the second connecting end 102, so that a certain pressure is applied to the first convex portion during the process of binding and fixing the sleeve 1 to the extension wire 3 along the second concave portion, that is, aligning the second convex portion and the second concave portion on the inner and outer sides of the sleeve 1. Thus, the first convex portion and the second convex portion are respectively aligned with the first concave portion and the second concave portion at both ends of the sleeve 1, so that the binding force of the binding wire wrapped along the first concave portion and the second concave portion acts directly on the first convex portion and the second convex portion, improving the sealing effect of the first sealing surface and the second sealing surface formed between the electrode wire 2 and the extension wire 3.

[0078] In addition, the first protrusion and the first concave part can also be set to be misaligned on the inner and outer sides of the sleeve 1, that is, set in an alternating manner. The second protrusion and the second concave part can also be set to be misaligned on the inner and outer sides of the sleeve 1, that is, set in an alternating manner. This can also enhance the sealing effect of the sealing surface.

[0079] In this embodiment, refer to Figure 12 The electrode lead 2 has a first connector end 201, and the extension lead 3 has a second connector end 301 that matches the first connector end 201. The first connector end 201 and the second connector end 301 cooperate within a channel 103 between a first protrusion and a second protrusion, so that the two connector ends can be positioned between a first sealing surface and a second sealing surface to achieve isolation from external tissue fluid. Specifically, when the electrode lead 2 is connected to the extension lead 3, the first connector end 201 and the second connector end 301 need to pass through the first protrusion or the second protrusion respectively within the channel 103, and form a first sealing surface and a second sealing surface respectively after passing through the corresponding protrusion, thereby achieving a seal at both ends of the connection sheath and preventing tissue fluid leakage from affecting the signal connection of the connector ends.

[0080] As a preferred method, refer to Figures 1 to 6The first protrusion can specifically be at least one ring of first annular raised ribs 1013 disposed inside the first connecting end 101. And / or, the second protrusion is at least one ring of second annular raised ribs 1023 disposed inside the second connecting end 102. In specific applications, the above-mentioned annular raised ribs are disposed around the circumference of the channel 103, and can be specifically configured as circular annular ribs or elliptical annular ribs, and can be integrally structured with the sleeve body 1. Thus, when the tying wire is tied along the first annular inner groove 1011 and the second annular inner groove 1021, the first annular raised ribs 1013 and the second annular raised ribs 1023 can prevent the areas where the two ends of the connecting sheath are squeezed from forming gaps, avoiding tissue fluid from leaking into the sleeve body 1 through the gaps and causing product failure. At the same time, the tying force of the tying wire helps to improve the sealing effect of the sealing surface formed by the first annular raised ribs 1013 and the second annular raised ribs 1023, further preventing tissue fluid leakage.

[0081] In practical applications, the choice between circular and elliptical annular ribs can be adapted to the shape of the annular groove. When the annular groove is circular, the corresponding annular rib is circular; conversely, when the groove is elliptical, the rib is elliptical. This enhances the binding force of the binding wire wound along the annular groove, improving the fixation of the annular rib and helping to maintain good sealing performance of the sealing surface.

[0082] Furthermore, the annular raised ribs can also be configured to not correspond to the annular concave ribs. For example, when the annular concave rib is set as a circular groove, the annular raised rib can be set as an elliptical annular raised rib; conversely, when the annular concave rib is set as an elliptical groove, the annular raised rib can be set as a circular annular raised rib. While this configuration does not produce the same level of sealing as when the annular raised ribs and annular concave ribs are configured in a corresponding manner, it still achieves a long-term sealing effect within the patient's tissues during use.

[0083] In a specific application, refer to Figure 3 and Figure 5 The sleeve 1 has a central axis. The width of the first annular raised rib 1013 and the second annular raised rib 1023 along the central axis of the sleeve 1 is L1, and L1 is greater than or equal to 0.1mm, so as to ensure that the first sealing surface and the second sealing surface have a good sealing effect, so as to form additional sealing protection at both ends of the connecting sheath.

[0084] In a specific application, refer to Figures 3 to 6Both sides of the connection between the first annular raised rib 1013 and the second annular raised rib 1023 and the sleeve 1 are rounded to allow the electrode wire 2 and the extension wire 3 to pass smoothly through the first annular raised rib 1013 and the second annular raised rib 1023, respectively. In practice, when the electrode wire 2 and the extension wire 3 are inserted into the channel 103, the connector end is prevented from passing over the corresponding annular raised rib to avoid affecting the fit between the two connector ends.

[0085] In practical applications, the first annular raised rib 1013 and the second annular raised rib 1023 are rounded at both sides of their connection with the sleeve 1 with a radius R, where R is greater than or equal to 0.1 mm. Specifically, during the insertion of the electrode wire 2 and the extension wire 3 into the channel 103, the rounded transition with a radius R greater than or equal to 0.1 mm on both sides of the annular raised ribs allows for a smooth transition between the two annular raised ribs and the channel 103, facilitating the smooth passage of the first connector end 201 and the second connector end 301 over the annular raised ribs and making wire insertion and removal convenient.

[0086] In practical applications, refer to Figures 3 to 6 The inner diameter of the first annular protruding rib 1013 is d0, the inner diameter of the first connecting end 101 is d1, and the outer diameter of the first joint end 201 is greater than d0 and less than d1; the inner diameter of the second annular protruding rib 1023 is D0, the inner diameter of the second connecting end 102 is D1, and the outer diameter of the second joint end 301 is greater than D0 and less than D1. Specifically, when the electrode wire 2 and the extension wire 3 are inserted into the channel 103, the first connector end 201 is inserted into the channel 103 from the first connecting end 101 with an inner diameter of d1, and passes through the first annular protrusion rib 1013 with an inner diameter of d0 in the channel 103. The second connector end 301 is inserted into the channel 103 from the second connecting end 102 with an inner diameter of D1, and passes through the second annular protrusion rib 1023 with an inner diameter of D0 in the channel 103. This allows the two connector ends to mate within the channel 103 between the two annular protrusion ribs, and forms sealing surfaces on both sides of the mating connection, thus achieving a seal on both sides of the connection between the electrode wire 2 and the extension wire 3.

[0087] As a preferred method, refer to Figures 7 to 10The first protrusion can specifically be at least one turn of the first spiral raised rib 1014 disposed inside the first connecting end 101. And / or, the second protrusion is at least one turn of the second spiral raised rib 1024 disposed inside the second connecting end 102. In specific applications, the above-mentioned spiral raised ribs are disposed along the circumference of the channel 103 and can be integrally structured with the sleeve 1. Thus, when the tying wire is tied along the first spiral inner groove 1012 and the second spiral inner groove 1022, the first spiral raised rib 1014 and the second spiral raised rib 1024 can prevent the areas where the two ends of the connecting sheath are squeezed from forming gaps, avoiding tissue fluid from leaking into the sleeve 1 through the gaps and causing product failure. At the same time, the tying force of the tying wire helps to form a sealing effect of the first spiral raised rib 1014 and the second spiral raised rib 1024 forming a sealing surface, further preventing tissue fluid leakage.

[0088] In a specific application, refer to Figure 9 and Figure 10 The sleeve 1 has a central axis. The width of the connection between the first spiral raised rib 1014 and the second spiral raised rib 1024 and the sleeve 1 along the central axis is L2, and L2 is greater than or equal to 0.1mm. In this way, during the process of inserting the electrode wire 2 and the extension wire 3 into the channel 103, the arc-shaped structure of the surface of the spiral raised rib makes it easy for the first connector end 201 and the second connector end 301 to smoothly pass over the spiral raised rib, which facilitates the insertion and removal of the wires.

[0089] In practical applications, refer to Figure 9 and Figure 10 The inner diameter of the first spiral protrusion rib 1014 is d2, the inner diameter of the first connecting end 101 is d3, and the outer diameter of the first joint end 201 is greater than d2 and less than d3; the inner diameter of the second spiral protrusion rib 1024 is D2, the inner diameter of the second connecting end 102 is D3, and the outer diameter of the second joint end 301 is greater than D2 and less than D3. Specifically, when the electrode wire 2 and the extension wire 3 are inserted into the channel 103, the first connector end 201 is inserted into the channel 103 from the first connecting end 101 with an inner diameter of d3, and passes over the first spiral protrusion rib 1014 with an inner diameter of d2 within the channel 103. The second connector end 301 is inserted into the channel 103 from the second connecting end 102 with an inner diameter of D3, and passes over the second spiral protrusion rib 1024 with an inner diameter of D2 within the channel 103. This achieves the two matching connector ends engaging within the channel 103 between the two spiral protrusion ribs, and forming sealing surfaces on both sides of the engagement joint, thus achieving a seal on both sides of the connection between the electrode wire 2 and the extension wire 3.

[0090] Secondly, referring to Figures 10 to 12This utility model also provides an electrode assembly, including a connecting sheath. It may further include an electrode lead 2 and an extension lead 3. The electrode lead 2 has a first connector end 201, and the extension lead 3 has a second connector end 301. The connecting sheath is installed at the connection between the first connector end 201 and the second connector end 301. Thus, when the connecting sheath is used for tying, the ligature is wound along the first and second recesses, making it easy for the doctor to identify the number of ligature turns. This ensures that both ends of the sheath 1 can be tied with a sufficient number of ligature turns to guarantee the stability of the connecting sheath's position on the electrode lead 2 and the extension lead 3. Simultaneously, the ligature is contained within the first and / or second recesses to form a tightly wound structure, ensuring the stability of the ligature on the sheath 1 and preventing it from loosening during winding.

[0091] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention, and all such changes should fall within the protection scope of the claims of the present invention.

Claims

1. A connection sheath for being arranged at the connection of an electrode lead (2) and an extension lead (3), characterized in that The utility model relates to a kind of connecting sheaths, including: A sleeve body (1) is internally provided with a passage (103) for accommodating the electrode lead wire (2) and the extended lead wire (3), and the sleeve body (1) has opposite first connecting end (101) and second connecting end (102); A bundle part is arranged outside the first connecting end (101) and / or second connecting end (102) along the circumference of the sleeve body (1), for accommodating a binding wire, and the binding wire is used to bind and fix the sleeve body (1) with the first connecting end (101) and / or second connecting end (102) on the electrode lead wire (2) and / or extended lead wire (3); Wherein, the bundle part includes a first recess and / or a second recess arranged at the first connecting end (101) and / or second connecting end (102), and the binding wire binds and fixes the two ends of the sleeve body (1) along the first recess and / or second recess.

2. The connection jacket according to claim 1, characterized in that When the sleeve body (1) is bound and fixed on the electrode lead wire (2) and / or extended lead wire (3), the binding wire in the first recess and / or second recess does not protrude from the outer surface of the sleeve body (1) of the first connecting end (101) and / or second connecting end (102).

3. The connection jacket of claim 1, wherein, The first recess is at least one first annular inner groove (1011) arranged outside the first connecting end (101);And / or, The second recess is at least one second annular inner groove (1021) arranged outside the second connecting end (102).

4. The connecting jacket according to claim 3, characterized in that The first annular inner groove (1011) and / or second annular inner groove (1021) are circular or elliptical annular grooves arranged along the outer surface of the sleeve body (1).

5. The connection jacket of claim 1, wherein, The first recess is at least one first spiral inner groove (1012) arranged outside the first connecting end (101);And / or, The second recess is at least one second spiral inner groove (1022) arranged outside the second connecting end (102).

6. The connection jacket of claim 1, wherein, The connecting sheath further includes a sealing part arranged inside the first connecting end (101) and / or second connecting end (102), for forming a seal between the electrode lead wire (2) and / or extended lead wire (3) at the first connecting end (101) and / or second connecting end (102) respectively when the electrode lead wire (2) and / or extended lead wire (3) is accommodated in the passage (103).

7. The connecting jacket according to claim 6, characterized in that The sealing part includes a first protrusion and a second protrusion;The first protrusion is arranged at the first connecting end (101), and the second protrusion is arranged at the second connecting end (102).

8. The connecting jacket according to claim 7, characterized in that The first protrusion and the first recess are respectively arranged inside and outside the first connecting end (101), so that a certain pressure is applied to the first protrusion during the process of binding and fixing the sleeve body (1) on the electrode lead wire (2) along the first recess by the binding wire;And / or, The second protrusion and the second recess are respectively arranged inside and outside the second connecting end (102), so that a certain pressure is applied to the first protrusion during the process of binding and fixing the sleeve body (1) on the extended lead wire (3) along the second recess by the binding wire.

9. The connecting jacket of claim 7, wherein, The electrode lead wire (2) has a first joint end (201), the extension lead wire (3) has a second joint end (301) matched with the first joint end (201), and the first joint end (201) is matched with the second joint end (301) in the passage (103) between the first and second protrusions.

10. The connecting jacket according to claim 9, characterized in that The first protrusion is at least one first annular protruding rib (1013) arranged inside the first connecting end (101); and / or, The second protrusion is at least one second annular protruding rib (1023) arranged inside the second connecting end (102).

11. The connecting jacket according to claim 10, characterized in that The sleeve (1) has a central axis, the width of the first and second annular protruding ribs (1013, 1023) along the central axis of the sleeve (1) is L1, and L1 is greater than or equal to 0.1 mm.

12. The connecting jacket of claim 10, wherein, The first and second annular protruding ribs (1013, 1023) are rounded on both sides of the connection with the sleeve (1) to smoothly pass the electrode lead wire (2) and the extension lead wire (3) through the first and second annular protruding ribs (1013, 1023), respectively; and / or, The first and second annular protruding ribs (1013, 1023) are rounded on both sides of the connection with the sleeve (1) with a radius R, and R is greater than or equal to 0.1 mm.

13. The connecting jacket of claim 11, wherein, The inner diameter of the first annular protruding rib (1013) is d0, the inner diameter of the first connecting end (101) is d1, and the outer diameter of the first joint end (201) is greater than d0 and less than d1. The inner diameter of the second annular protruding rib (1023) is D0, the inner diameter of the second connecting end (102) is D1, and the outer diameter of the second joint end (301) is greater than D0 and less than D1.

14. The connecting jacket of claim 9, wherein, The first protrusion is at least one first spiral protruding rib (1014) arranged inside the first connecting end (101); and / or, The second protrusion is at least one second spiral protruding rib (1024) arranged inside the second connecting end (102).

15. The connecting jacket according to claim 14, characterized in that The sleeve (1) has a central axis, the width of the first and second spiral protruding ribs (1014, 1024) along the central axis of the sleeve (1) at the connection with the sleeve (1) is L2, and L2 is greater than or equal to 0.1 mm.

16. The connecting jacket of claim 14, wherein, The inner diameter of the first spiral protruding rib (1014) is d2, the inner diameter of the first connecting end (101) is d3, and the outer diameter of the first joint end (201) is greater than d2 and less than d3; the inner diameter of the second spiral protruding rib (1024) is D2, the inner diameter of the second connecting end (102) is D3, and the outer diameter of the second joint end (301) is greater than D2 and less than D3.

17. An electrode assembly, characterized by, The connection sleeve includes the connection sleeve according to any one of claims 1 to 16.

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