Electrode attachment catheter

Abstract

The utility model provides an electrode attachment catheter which is applied to minimally invasive interventional equipment, the electrode attachment catheter comprises a supporting assembly and a plurality of electrode pieces, the whole supporting assembly is arranged in the minimally invasive interventional equipment and connected with a catheter in the minimally invasive interventional equipment, the supporting assembly comprises a sleeve and a mandrel, and the electrode pieces are arranged in the sleeve and connected with the catheter in the minimally invasive interventional equipment. The outer wall of the sleeve is fixedly connected with the multiple electrode parts, the multiple electrode parts are distributed in the circumferential direction of the sleeve, the core shaft is arranged in the sleeve in a sliding and sleeving mode, and the two ends of the core shaft are connected with equipment catheters in the minimally invasive intervention equipment respectively; the multiple electrode parts are distributed in the circumferential direction of the sleeve, and the second end of each electrode part in the multiple electrode parts is electrically connected with an external power supply circuit so that a conductive area can be formed at the first end of the electrode part after the second ends of the electrode parts are powered on. The electrode attaching conduit provided by the utility model is simple in overall structure and easy to realize, and meanwhile, the processing and mounting cost of the conduit and an electrode piece on the conduit can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical catheter technology, and in particular to an electrode-attached catheter. Background Technology

[0002] Currently, cardiovascular stenosis lesions are complex and diverse in clinical practice. During interventional treatment of cardiovascular stenosis, electrodes need to be connected to some catheters on the operating device to form a conductive area through the electrodes to complete the treatment of the lesion. In the traditional electrode connection process, the electrode tube is often connected to the outside of the catheter first, and one end of the power line is stripped to expose the copper wire. Then, the copper wire is inserted into the electrode tube, and finally the electrode tube is flattened, with one end of the electrode tube pressing on the wire insulation and the other end pressing on the copper wire. When the end of the copper wire passes through the electrode tube, the passed part is cut off. Because the outer diameter of the electrode tube is small and the copper wire is also very thin, the insertion and cutting operations are often difficult, resulting in low processing efficiency. At the same time, the cutting operation is also prone to damaging the catheter, resulting in high processing costs. In addition, in the traditional process, the position of the electrode on the catheter is usually fixed, which has poor adaptability in use. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an electrode attachment conduit with a simple and easy-to-implement overall structure, so as to reduce the processing and installation costs of the conduit and the electrode components on the conduit.

[0004] To address the aforementioned technical problems, embodiments of this utility model provide an electrode attachment catheter, applied in minimally invasive interventional devices, comprising:

[0005] A support assembly, which is integrally housed within a minimally invasive interventional device and connected to an internal catheter of the device, comprises a cannula and a mandrel. Multiple electrodes are fixedly connected to the outer wall of the cannula and distributed circumferentially along the cannula. The mandrel is slidably fitted inside the cannula, and its two ends are respectively connected to an internal catheter of the minimally invasive interventional device.

[0006] The plurality of electrode elements are distributed circumferentially along the sleeve, and the second end of each of the plurality of electrode elements is electrically connected to an external power supply line so that a conductive area is formed at the first end of the electrode element after the second end of the electrode element is energized.

[0007] In one embodiment, a sliding sleeve is provided between the sleeve and the mandrel.

[0008] In one embodiment, the length of the mandrel is greater than the length of the sleeve.

[0009] In one embodiment, the sleeve is cylindrical, the mandrel is cylindrical, and the inner diameter of the cylindrical sleeve is larger than the outer diameter of the cylindrical mandrel.

[0010] In one embodiment, the electrode attachment catheter further includes:

[0011] At least two unused electrode tubes are fixedly connected to the outer wall of the sleeve.

[0012] In one embodiment, at least two vacant electrode tubes are sequentially distributed along the axial direction of the sleeve in a straight line.

[0013] In one embodiment, each of the plurality of electrode elements includes:

[0014] An electrode tube, one side of which is fixedly connected to the outer wall of the sleeve; and

[0015] A power supply line, one end of which is inserted into the electrode tube and fixed to one end of the electrode tube after fatigue failure, and the other end of which is placed outside the other end of the electrode tube and laid in the sleeve and electrically connected to the power supply line.

[0016] In one embodiment, the power supply line includes:

[0017] Metal wire; and

[0018] At least two protective sheaths are provided, spaced apart, on the metal wire, with each end of the metal wire covered by one of the two protective sheaths. One end of the metal wire, together with the protective sheaths, is inserted into the electrode tube until the electrode tube covers the section of the metal wire on the conductive line that is not covered by the protective sheaths. The wall of one end of the electrode tube is attached and fixed to the end of the metal wire that is not covered by the protective sheaths, and the wall of the other end of the electrode tube is attached and fixed to the protective sheaths.

[0019] In one embodiment, the electrode tube has a through hole for the power line to pass through, and the inner diameter of the through hole is larger than the outer diameter of the protective sheath.

[0020] In one embodiment, the outer diameter of the electrode tube of at least one of the empty electrode tubes and the length of each of the plurality of electrode elements are 0.28 mm and 1 mm respectively.

[0021] The above-described solution of this utility model has at least the following beneficial effects:

[0022] The electrode attachment catheter provided in the above embodiments of this utility model is applied in a minimally invasive interventional device, comprising: a support assembly, the support assembly being integrally placed within the minimally invasive interventional device and connected to a catheter inside the device; the support assembly including: a sheath and a mandrel; a plurality of electrode elements are fixedly connected to the outer wall of the sheath and distributed circumferentially along the sheath; the mandrel is slidably sleeved inside the sheath, and both ends of the mandrel are respectively connected to a device catheter inside the minimally invasive interventional device; and a plurality of electrode elements, distributed circumferentially along the sheath, with the second end of each electrode element electrically connected to an external power supply line, so that a conductive area is formed at the first end of the electrode element after energization at the second end. The electrode attachment catheter provided by this utility model has a simple and easy-to-implement overall structure, and can reduce the processing and installation costs of the catheter and the electrode elements on it. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural schematic diagram of the electrode attachment conduit provided in an embodiment of the present invention;

[0024] Figure 2 This is a three-dimensional structural schematic diagram of the electrode component provided in an optional embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the power supply line and electrode tube installation provided in an optional embodiment of this utility model;

[0026] Figure 4 This is a schematic diagram of a power supply circuit provided in an optional embodiment of the present invention;

[0027] Figure 5 This is an installation diagram of multiple electrode tubes and power lines provided in an optional embodiment of this utility model.

[0028] Explanation of reference numerals: 10. Electrode attachment conduit; 11. Sleeve; 2. Electrode component; 21. Electrode tube; 22. Power line; 221. Metal wire; 222. Protective sheath; 12. Mandrel; 3. Unused electrode tube. Detailed Implementation

[0029] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0030] In the following description, certain specific details are set forth for the purpose of illustrating various disclosed embodiments in order to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the art will recognize that embodiments may be practiced without one or more of these specific details. In other instances, well-known apparatuses, structures, and techniques associated with this application may not have been shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0031] Throughout this specification, references to "an embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Therefore, the appearance of "in an embodiment" or "an embodiment" in various places throughout the specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0032] In the following description, in order to clearly demonstrate the structure and working method of the present invention, a number of directional terms will be used. However, terms such as "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", and "down" should be understood as convenient terms and not as limiting terms.

[0033] like Figure 1 As shown, an embodiment of this utility model proposes an electrode attachment catheter 10, which is applied in a minimally invasive interventional device. The electrode attachment catheter 10 may include a support assembly and multiple electrode elements 2. The support assembly is placed entirely within the minimally invasive interventional device and connected to the device catheter inside the device. The multiple electrode elements 2 are distributed circumferentially along the support assembly. The second end of each electrode element 2 is electrically connected to an external power supply line, so that a conductive area is formed at the first end of the electrode element 2 after the second end of the electrode element 2 is energized.

[0034] In this embodiment, the support component is placed inside the minimally invasive interventional device and connected to the catheter inside the device. The two ends of the support component should match the catheter inside the device for easy installation. The support component serves as a support structure for multiple electrode components 2 and can be cylindrical in shape. The multiple electrode components 2 are distributed circumferentially along the support component and at different positions on the component, so that they can form conductive areas at different positions during use. Furthermore, the separate arrangement of the multiple electrode components 2 on the support component facilitates the assembly of the support component and the electrode components 2.

[0035] Preferably, multiple electrode components 2 can be adhered to the outside of the support assembly by dispensing adhesive.

[0036] Here, the support assembly may include a cannula 11 and a mandrel 12. Multiple electrode elements 2 are fixedly connected to the outer wall of the cannula 11 and the multiple electrode elements 2 are distributed along the circumference of the cannula 11; the mandrel 12 is slidably sleeved inside the cannula 11, and the two ends of the mandrel 12 are respectively connected to the device catheter inside the minimally invasive interventional device.

[0037] Preferably, the cannula 11 can be configured as a cylinder, and the mandrel 12 can be configured as a cylinder, with the inner diameter of the cylindrical cannula 11 being larger than the outer diameter of the cylindrical mandrel 12. More preferably, the length of the mandrel 12 is greater than the length of the cannula 11, so that the mandrel 12 can slide inside the cannula 11, thereby facilitating the change of the position of the electrode 2 on the cannula 11 inside the minimally invasive interventional device to adapt to the needs of different treatment areas.

[0038] In one feasible example of this utility model, a sliding sleeve can be provided between the sleeve 11 and the mandrel 12 so that the sleeve 11 as a whole can slide and be fixed on the mandrel 12.

[0039] like Figure 1 As shown, in an optional embodiment of this utility model, the electrode attachment conduit 10 may further include at least two empty electrode tubes 3, which are fixedly connected to the outer wall of the sleeve 11.

[0040] Preferably, at least two empty electrode tubes 3 are arranged in a straight line along the axial direction of the sleeve 11.

[0041] In this embodiment, at least two unused electrode tubes 3 are axially and linearly distributed on the sleeve 11 so as to facilitate the simultaneous installation of the at least two unused electrode tubes 3 through a power line; after the power line is installed, it is also convenient to electrically connect each of the two unused electrode tubes 3 to other multiple electrode components 2 on the sleeve 11 according to the specific needs of operation, or to directly connect the sleeve 11 to an external power supply line.

[0042] like Figure 2 As shown, in an optional embodiment of this utility model, each of the plurality of electrode components 2 includes an electrode tube 21 and a power supply line 22. One side of the electrode tube 21 is bonded and fixed to the outer wall of the sleeve 11; one end of the power supply line 22 is inserted into the electrode tube 21 and fixed to one end of the electrode tube 21 after fatigue breakage, and the other end of the power supply line 22 is placed outside the other end of the electrode tube 21 and laid in the sleeve 11 and electrically connected to the power supply line.

[0043] In an optional embodiment of this utility model, the outer diameter of the electrode tube 21 of at least one empty electrode tube 3 and each of the plurality of electrode components 2 can be 0.28 mm and the length can be 1 mm.

[0044] In this embodiment, such as Figure 3 As shown, one end of the power line 22 is inserted into the electrode tube 21, and after it passes out of the electrode tube 21, the exposed metal wire at one end of the power line 22 can be clamped with pliers and repeatedly bent to cause the metal wire in the power line 22 to fatigue break, so as to avoid damage to the mandrel 12 and the sleeve 11 caused by directly cutting the metal wire on the sleeve 11. Since the metal wire is thin, breaking it by fatigue bending reduces the difficulty of operation compared with directly cutting the metal wire.

[0045] like Figure 4 As shown, in an optional embodiment of this utility model, the power line includes a metal wire 221 and at least two protective sheaths 222; at least two protective sheaths 222 are spaced apart on the metal wire 221 and both ends of the metal wire 221 are covered by the two protective sheaths 222 respectively; when installing the electrode and the sleeve 11, one end of the metal wire 221 together with the protective sheaths 222 is inserted into the electrode tube 21 until the electrode tube 21 covers the metal wire segment on the power line that is not covered by the protective sheaths 222, and the tube wall of one end of the electrode tube 21 is attached and fixed to the end of the metal wire that is not covered by the protective sheaths 222, and the tube wall of the other end of the electrode tube 21 is attached and fixed to the protective sheaths 222.

[0046] Preferably, the electrode tube 21 has a through hole for the power line 22 to pass through, and the inner diameter of the through hole is larger than the outer diameter of the protective sheath 222, so that the power line can be inserted into the electrode tube 21 as a whole, which facilitates the installation of the electrode tube 21 and the power line.

[0047] In this embodiment, the protective sheath 22 covers the metal wire 221, and both ends of the metal wire 221 are covered by two sections of protective sheath 222 to increase the outer diameter of the metal wire 221 and facilitate subsequent operations; multiple sections of protective sheath 222 are distributed at intervals on the metal wire 222 to expose a section of the metal wire, which facilitates the installation of the electrode tube 21.

[0048] When installing the electrode and the sleeve 11, the electrode tube 21 can be first attached to the outside of the sleeve 11. One end of the metal wire 221, together with the protective sheath 222, is inserted into the electrode tube 21 until the electrode tube 21 covers the exposed metal wire segment. At this time, the electrode tube 21 is flattened so that one end of the electrode tube 21 is pressed on the protective sheath 221 and the inner wall of the tube is in contact with the protective sheath 221. At the same time, the other end of the electrode tube 21 is pressed on the metal wire 221.

[0049] Furthermore, the excess metal wire 221 protruding from the electrode tube 21 is clamped and repeatedly bent multiple times to cause the metal wire to fatigue and break. Compared with existing cutting operations, repeatedly bending the metal wire to cause fatigue and breakage can reduce the difficulty and cost of operation, and can also avoid cutting damage to the sleeve 11.

[0050] like Figure 5 As shown, preferably, when installing the electrode 2 and the sleeve 11, multiple metal wires 222 can be directly stripped from a power line 22 and exposed at intervals. Then, multiple electrode tubes 21 are threaded through and flattened. The exposed metal wires of the electrode tubes 21 are repeatedly bent to obtain multiple electrode 2 at the same time, thereby improving the processing efficiency of the electrode 2. Subsequently, the multiple installed electrode 2 are respectively adhered to different positions on the sleeve 11 to meet the usage requirements.

[0051] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. An electrode attachment catheter, used in minimally invasive interventional devices, characterized in that, include: A support assembly, the entire support assembly being placed within the minimally invasive interventional device and connected to the device catheter inside the minimally invasive interventional device, the support assembly comprising: a cannula (11) and a mandrel (12), wherein multiple electrode elements (2) are fixedly connected to the outer wall of the cannula (11) and the multiple electrode elements (2) are distributed circumferentially along the cannula (11), the mandrel (12) is slidably sleeved inside the cannula (11), and both ends of the mandrel (12) are respectively connected to the device catheter inside the minimally invasive interventional device; and Multiple electrode elements (2) are distributed circumferentially along the sleeve (11). The second end of each of the multiple electrode elements (2) is electrically connected to an external power supply line so that a conductive area is formed at the first end of the electrode element after the second end of the electrode element is energized.

2. The electrode attachment catheter according to claim 1, characterized in that, A sliding sleeve is provided between the sleeve (11) and the mandrel (12).

3. The electrode attachment catheter according to claim 1, characterized in that, The length of the mandrel (12) is greater than the length of the sleeve (11).

4. The electrode attachment catheter according to claim 1, characterized in that, The sleeve (11) is cylindrical, the mandrel (12) is cylindrical, and the inner diameter of the cylindrical sleeve (11) is larger than the outer diameter of the cylindrical mandrel (12).

5. The electrode attachment catheter according to claim 1, characterized in that, Also includes: At least two empty electrode tubes (3) are fixedly connected to the outer wall of the sleeve (11).

6. The electrode attachment catheter according to claim 5, characterized in that, At least two of the empty electrode tubes (3) are arranged in a straight line along the axial direction of the sleeve (11).

7. The electrode attachment catheter according to claim 1, characterized in that, Each of the plurality of electrode elements (2) includes: Electrode tube (21), one side of which is fixedly connected to the outer wall of sleeve (11); and The power supply line (22) has one end inserted into the electrode tube (21) and fixed to one end of the electrode tube (21) after fatigue failure. The other end of the power supply line (22) is placed outside the other end of the electrode tube (21) and laid on the sleeve (11) and electrically connected to the power supply line.

8. The electrode attachment conduit according to claim 7, characterized in that, The power lines include: Metal wire (221); and At least two protective sheaths (222) are spaced apart and sleeved on the metal wire (221), with each end of the metal wire (221) covered by one of the two protective sheaths (222). One end of the metal wire (221) together with the protective sheaths (222) is inserted into the electrode tube (21) until the electrode tube (21) covers the metal wire segment on the power line that is not covered by the protective sheaths (222). The tube wall at one end of the electrode tube (21) is attached and fixed to the end of the metal wire that is not covered by the protective sheaths (222), and the tube wall at the other end of the electrode tube (21) is attached and fixed to the protective sheaths (222).

9. The electrode attachment conduit according to claim 8, characterized in that, The electrode tube (21) has a through hole for the power line (22) to pass through, and the inner diameter of the through hole is larger than the outer diameter of the protective sheath (222).

10. The electrode attachment conduit according to claim 5, characterized in that, The outer diameter of the electrode tube (21) of at least one of the empty electrode tubes (3) and each of the plurality of electrode elements (2) is 0.28 mm and the length is 1 mm.

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