Welding structure and welding method of electrode conduit

Abstract

The invention relates to the technical field of electrode catheters, in particular to a welding structure and a welding method of an electrode catheter.The welding structure comprises a plug body, a plurality of metal piece terminals are embedded in the plug body, each metal piece terminal is sleeved with a wiring nose, and the top face of each wiring nose is higher than the top face of the corresponding metal piece terminal; a signal line is inserted into the top of the wiring nose, and the metal piece terminal, the signal line and the wiring nose are connected through welding; according to the invention, the signal line and the metal piece terminal which are originally connected through spot welding are changed into molten pool welding through the wiring nose, so that the welding strength is improved, and the welding process is easier.

Description

Technical Field

[0001] The present invention relates to the technical field of electrode catheters, and in particular to a welding structure and a welding method of an electrode catheter. Background Art

[0002] A ventilator is a device that provides respiratory support for the human body. When the human body inhales, the ventilator needs to provide gas flow and pressure support immediately; when the human body exhales, the positive pressure of the ventilator will hinder the normal exhalation of the person, so it is necessary to detect the state of the human body's exhalation and immediately reduce or cancel the positive pressure of the ventilator.

[0003] The electrode catheter is an implantable device for collecting human respiratory signals. During the manufacturing process of the electrode catheter, it is necessary to collect bioelectric signals from the human diaphragm, mainly the concentration of various ions in the body, so the signal lines involved are very small in size. These tiny signal lines need to be connected to conventional metal terminals.

[0004] In the production process of existing electrode catheters, the signal wire and the metal terminal need to be welded together. Figure 1 As shown, 11 is the main plastic part of the male plug connector of the electrode catheter, 12 is the metal terminal embedded in the main plastic part, which is generally a conductive metal such as copper; 13 is a signal line with a diameter of 0.03mm and a material of stainless steel. Since the signal line 13 is made of stainless steel and the metal terminal is copper, it is difficult to get tin when using conventional tin wire for welding. Therefore, the existing technology mainly uses special stainless steel solder, and the welding can only be completed by manually clamping one end of the signal line with the assistance of tweezers.

[0005] However, even if special stainless steel solder is used, the fluidity of stainless steel solder is very poor, the welding temperature is high, and the signal line is too thin to be clamped, resulting in unsatisfactory welding effect. Even if the welding is completed, since the end of the signal line 13 is connected to the metal terminal 12 at a point and the signal line is too thin, it is very easy for the signal line to fall off during other signal line welding and subsequent other operations.

[0006] A connection method and connection structure of a copper alloy shunt and a signal line with application number CN200810071402.5 discloses a method of connecting a shunt to one end of the signal line with a connecting terminal, wherein one end of the connecting terminal presses the wire core with the insulation stripped off, and the other end presses the insulation part of the signal line to form a signal line assembly; then, one end of the signal line assembly with the connecting terminal is connected to the welding protrusion of the copper alloy shunt by welding, riveting or screw connection; it discloses a method and structure for welding the shunt and the signal line together, but the welding is still through point contact, and the welding process is complicated and the operation is not very convenient. Summary of the invention

[0007] The technical problem to be solved by the present invention is that the process of welding the signal line and the metal terminal together is relatively difficult and the signal line is easy to fall off after welding.

[0008] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0009] First, a welding structure of an electrode catheter is provided, including a plug body, wherein a plurality of metal terminals are embedded in the plug body, each of the metal terminals is provided with a wiring nose, the top surface of the wiring nose is higher than the top surface of the metal terminal, a signal line is inserted into the top of the wiring nose, and the metal terminal, the signal line and the wiring nose are connected by welding.

[0010] The wire nose can extend the welding length on the signal line, making the welding between the signal line and the metal terminal more stable and making the welding process more convenient.

[0011] Furthermore, the top surface of the wiring nose is at least 4 mm higher than the top surface of the metal terminal.

[0012] Furthermore, the end face of the wiring nose is in contact with and fits with the end face of the plug body.

[0013] Simply put the wiring nose on the metal terminal, and the top surface of the wiring nose can be higher than the top surface of the metal terminal. It is simple to use and easy to operate.

[0014] Furthermore, the end surface of the wiring nose in contact with the plug body is provided with an outward-turned skirt.

[0015] The skirt is used to make the contact between the wiring nose and the plug body more stable, and also makes it easier for the wiring nose to be put on the metal terminal.

[0016] Furthermore, it also includes a fixing plate, and fixing holes are provided on the fixing plate at positions corresponding to the wiring lugs.

[0017] The fixing plate is used to fix the distance between each wiring lug to prevent the wiring lugs from contacting each other, so that the device is more stable in use and has a better use effect.

[0018] Furthermore, a middle hole is provided on the fixing plate, a through slot communicating with the middle hole is provided on the fixing hole, and a removal hole communicating with the middle hole is provided on a side surface of the fixing plate.

[0019] The fixing plate can be smoothly separated from the signal line by using the through slot and the removal hole, so that the fixing plate can be removed, making the device more convenient to use.

[0020] Furthermore, the diameter of the signal line is smaller than the diameter of the metal terminal.

[0021] Furthermore, the wiring nose and the metal terminal are both made of copper, and the signal line is made of stainless steel.

[0022] The present invention also provides a welding method, which is characterized in that it includes a metal terminal, a cylindrical wiring nose, and a signal line, and the welding steps are as follows:

[0023] S1: Put the terminal lug on the metal terminal;

[0024] S2: Make the top surface of the wiring nose extend beyond the top surface of the metal terminal by a certain distance and fix it;

[0025] S3: Insert the signal wire into the top of the wiring nose and make contact with the top surface of the metal terminal;

[0026] S4: Place a piece of solder into the top of the lug;

[0027] S5: melt the solder to form a molten pool that fills the terminal nose;

[0028] S6: Wait for the molten pool to cool and solidify.

[0029] Furthermore, the top surface of the wiring nose in S2 exceeds the top surface of the metal terminal by at least 4 mm.

[0030] The present invention has the following beneficial effects: the present invention utilizes the wiring nose so that the signal line and the metal terminal that were originally connected together by spot welding are welded together by a molten pool, thereby increasing the connection parts on the signal line and making the welding structure more stable; at the same time, the provision of the wiring nose also makes it easier to weld together welding parts with different sizes, and only the solder needs to be melted during the welding process, thus saving welding time and avoiding the occurrence of looseness after welding; at the same time, the provision of the fixing plate also prevents the wiring noses from contacting each other, thereby improving the stability of the device, making the welding process easier, effectively improving the welding efficiency and reducing the cost.

[0031] A welding method provided by the present invention also has the above advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0033] Figure 1 This is a connection diagram between a metal terminal and a signal line in the prior art;

[0034] Figure 2This is a schematic diagram of the structure of the wiring nose of this embodiment;

[0035] Figure 3 This is a schematic diagram of the connection between the wiring nose and the metal terminal of this embodiment;

[0036] Figure 4 is a top view of the fixed plate of this embodiment;

[0037] Figure 5 This is a schematic diagram of the installation of the fixed plate of this embodiment;

[0038] Figure 6 for Figure 5 A top view of

[0039] Figure 7 It is a cross-sectional view of the signal line of this embodiment being inserted into the wiring nose;

[0040] Figure 8 This is a schematic diagram of placing solder in this embodiment;

[0041] Fig. 9 Schematic diagram of the solder melting into a molten pool in this embodiment;

[0042] Fig.10 This is a schematic diagram of the fixed plate moving upward and contacting the signal line in this embodiment;

[0043] Fig.11 This is a schematic diagram of the signal line moving toward the middle hole in this embodiment;

[0044] Fig.12 This is a schematic diagram of the present embodiment after the fixing plate is removed. DETAILED DESCRIPTION

[0045] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0046] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0047] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0048] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] The present invention provides a welding structure of an electrode catheter, such as Figure 1 As shown, it includes a plug body 11, which is made of plastic, wherein a plurality of metal terminals 12 are embedded in the plug body 11, the metal terminals 12 are made of copper, and signal wires 13 are welded to the ends of the metal terminals 12, the signal wires 13 are made of stainless steel. In this embodiment, the diameter of the signal wire 13 is about 0.03 mm, and the diameter of the metal terminals 12 is about 1 mm.

[0050] During the welding process, due to the large difference in diameter between the signal line 13 and the metal terminal 12, the welding point is easily caused to fall off. In order to strengthen the welding point between the signal line 13 and the metal terminal 12, such as Figure 2 , Figure 3 and Fig. 9 As shown, the metal terminals 12 are each provided with a cylindrical wiring nose 14, the top surface of the wiring nose 14 exceeds the top surface of the metal terminal 12, the top of the wiring nose 14 is extended with a signal line 13, and the end of the signal line 13, the inner wall of the end of the wiring nose 14 and the top of the metal terminal 12 are connected by welding.

[0051] In the present embodiment, since the top of the wiring nose 14 exceeds the top of the metal terminal 12, more welding points can be connected to the signal line 13 during the welding process, and the added welding portion on the signal line 13 is the distance that the wiring nose 14 exceeds the end surface of the metal terminal 13. In the present embodiment, the top surface of the wiring nose 14 exceeds the end surface of the metal terminal 12 by at least 4 mm.

[0052] In order to prevent the connection noses 14 from contacting each other during the welding process, Figure 4 , Figure 5 and Figure 6 As shown, it also includes a fixing plate 15, wherein fixing holes 151 are opened at the positions of the fixing plate 15 corresponding to the wiring noses 14. During the welding process, after the wiring noses 14 are plugged into the metal terminal 12, the wiring noses 14 are passed through the corresponding fixing holes 15, and the positions of the wiring noses 14 are fixed by the fixing plate 15, which can effectively prevent the wiring noses 14 from contacting each other.

[0053] Meanwhile, in other embodiments, for the convenience of operation, the wiring lugs 14 can be first inserted into the fixing holes 151 for fixing, and then all the wiring lugs 14 are inserted into the corresponding metal terminals 12 as a whole, which is more convenient for operation.

[0054] After welding is completed, since the signal line 13 is already connected to the metal terminal 12, it is impossible to move upward to remove the fixing plate 15. In order to facilitate the removal of the fixing plate 15, the fixing plate 151 is annular, and a middle hole 153 is provided on the fixing plate 151. A through groove 152 that penetrates the middle hole 153 is provided on the side of the fixing hole 151. A removal hole 154 that penetrates the middle hole 153 is provided on the side of the fixing plate 151. In this embodiment, Fig.10 , Fig.11 and Fig.12 As shown, after welding is completed, the fixing plate 151 is moved upward to make the signal line 13 contact with the fixing hole 151, and then the signal line 13 passes through the groove 152 and enters the middle hole 153, and then the signal lines 13 are bundled or removed one by one through the removal hole 154. At this time, the fixing plate 15 can be removed to complete the welding work.

[0055] In this embodiment, if Figure 2 and Figure 3 As shown, in order to facilitate the installation of the wiring nose 14, the end face of the wiring nose 14 contacts the end face 111 of the plug body 11, and the end face of the wiring nose 14 contacting the plug body 11 is provided with an outward-turned skirt 141, and the outer diameter of the skirt 141 is smaller than the center distance between adjacent metal terminals 12, so as to avoid the connection between two adjacent wiring noses 14.

[0056] In this embodiment, in order to better connect the welding points, the material of the wiring lug 14 is copper.

[0057] The present invention also provides a welding method, such as Figure 1-Figure 12 As shown, it includes a metal terminal 12, a cylindrical wiring nose 14, and a signal line 13. The welding steps are as follows:

[0058] S1: Put the terminal lug 14 onto the metal terminal 12;

[0059] S2: Make the top surface of the wiring nose 14 exceed the top surface of the metal terminal 12 by a certain distance, and fix the wiring nose 14, generally the exceeding distance is not less than 4mm;

[0060] S3: insert the signal line 13 into the top of the wiring nose 14 and make contact with the top surface of the metal terminal 12;

[0061] S4: Put a piece of solder 16 into the top of the wiring nose 14. The solder can be conventional soldering.

[0062] S5: melting the solder 16 to form a molten pool 164 that fills the terminal lug 14. Specifically, the solder 16 is exposed to the terminal lug 14 by contacting the solder 16 with the electric iron. Due to the effect of heat conduction, the entire solder 16 can be melted to form the molten pool 164.

[0063] S6: After the molten pool 164 cools and solidifies, the end of the signal line 13, the end of the metal terminal 12 and the inner wall of the end of the wiring nose 14 are welded together.

[0064] In the present method, if there are multiple evenly distributed metal terminals 12 that need to be welded, in order to conveniently fix the distance between the wiring noses 14, a fixing plate 15 is also installed in S2 to fix the wiring noses 14, and a fixing hole 151 is provided at the position of the fixing plate 15 corresponding to the wiring nose 14, and a middle hole 153 is provided on the fixing plate 15. A through groove 152 that penetrates the middle hole 153 is provided on the fixing hole 151 for allowing the signal line 13 to pass through, and a removal hole 154 that penetrates the middle hole 153 is provided on the side of the fixing plate 15, so that the signal line 13 is completely separated from the fixing plate 15.

[0065] It should be understood that the above description of the specific embodiments of the present invention is only for illustrating the technical route and features of the present invention, and its purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, but the present invention is not limited to the above specific implementation methods. Any changes or modifications made within the scope of the claims of the present invention should be included in the protection scope of the present invention.

Claims

1. A welding structure of an electrode catheter, characterized in that: The invention comprises a plug body (11), wherein a plurality of metal terminals (12) are embedded in the plug body (11), each of the metal terminals (12) is provided with a wiring nose (14), the top surface of the wiring nose (14) is higher than the top surface of the metal terminal (12), a signal line (13) is inserted into the top of the wiring nose (14), and the metal terminal (12), the signal line (13) and the wiring nose (14) are connected by welding.

2. The welding structure of an electrode catheter according to claim 1, characterized in that: The top surface of the wiring nose (14) is at least 4 mm higher than the top surface of the metal terminal (12).

3. The welding structure of an electrode catheter according to claim 1, characterized in that: The end surface of the wiring nose (14) contacts and fits with the end surface of the plug body (11).

4. The welding structure of an electrode catheter according to claim 3, characterized in that: The end surface of the wiring nose (14) in contact with the plug body (11) is provided with an outward-turned skirt (141).

5. The welding structure of an electrode catheter according to claim 1, characterized in that: It also comprises a fixing plate (15), and fixing holes (151) are provided on the fixing plate (15) at positions corresponding to the wiring lugs (14).

6. The welding structure of an electrode catheter according to claim 5, characterized in that: The fixing plate (15) is provided with a middle hole (153), the fixing hole (151) is provided with a through groove (152) which is in communication with the middle hole (153), and the side surface of the fixing plate (15) is provided with a removal hole (154) which is in communication with the middle hole (153).

7. The welding structure of an electrode catheter according to claim 1, characterized in that: The diameter of the signal line (13) is smaller than the diameter of the metal terminal (12).

8. The welding structure of an electrode catheter according to claim 1, characterized in that: The wiring nose (14) and the metal terminal (12) are both made of copper, and the signal line (13) is made of stainless steel.

9. A welding method, characterized in that: The device comprises a metal terminal (12), a cylindrical wiring nose (14), and a signal line (13), and the welding steps are as follows: S1: Sleeve the wiring lug (14) onto the metal terminal (12); S2: Make the top surface of the wiring nose (14) protrude a certain distance from the top surface of the metal terminal (12) and fix it; S3: insert the signal wire (13) into the top of the wiring nose (14) and make contact with the top surface of the metal terminal (12); S4: Place a piece of solder (16) into the top end of the terminal nose (14); S5: melting the solder (16) to form a molten pool (164) that fills the terminal nose (14); S6: Waiting for the molten pool (164) to cool and solidify.

10. A welding method according to claim 9, characterized in that: The top surface of the wiring nose (14) in S2 exceeds the top surface of the metal terminal (12) by at least 4 mm.

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