Medical guide wire inner core electrolytic processing device and processing method

Abstract

The application discloses a medical guide wire inner core electrolytic processing device and a processing method. The device comprises a device frame, an inner core electrolytic processing unit, two sets of inner core rotating units and an electrode feeding unit. The inner core electrolytic processing unit is arranged on the device frame. The inner core rotating units are arranged on the device frame and are respectively located on the two sides of the inner core electrolytic processing unit. During processing, the guide wire inner core blank penetrates through the inner core electrolytic processing unit and is connected to the two sets of inner core rotating units. The inner core rotating units fix and drive the guide wire inner core blank penetrating through the inner core rotating units. The electrode feeding unit is arranged on the device frame and is used for feeding the processing electrode in the electrode feeding unit to the inner core electrolytic processing unit to process the guide wire inner core blank. The processing device can realize one-time processing and forming of two guide wire inner cores, so that the processing efficiency of the medical guide wire inner core is effectively improved. The processing device and the processing method can simultaneously ensure the processing qualified rate and the processing efficiency of the guide wire inner core.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electrolytic machining and medical equipment technology, in particular to a medical guide wire inner core electrolytic machining device and method. BACKGROUND

[0002] The medical guide wire is a kind of disposable surgical consumables indispensable for interventional medical treatment at present, mainly playing a supporting and guiding role. The medical guide wire is mainly composed of a cladding layer and a metal guide wire inner core. The material of the guide wire inner core is mainly stainless steel and nickel-titanium alloy material. In order to improve the flexibility of the guide wire and reduce the damage to the blood vessel, the front end of the guide wire inner core needs to have a long tapered structure that gradually tapers. Therefore, this greatly increases the processing difficulty of the guide wire inner core. The existing technology usually uses a centerless grinding machine to process the tapered surface (tapered structure) at the end of the guide wire inner core. However, due to the small size, the machining precision is difficult to guarantee. At the same time, under the action of mechanical grinding force, the guide wire inner core is prone to breakage during processing, or the processed guide wire inner core is prone to bending, resulting in low processing qualification rate and other problems.

[0003] Electrochemical machining is a non-contact machining method based on the principle of electrochemical anodic dissolution to remove materials. It has the advantages of no cutting force in processing, no tool wear, good processing surface quality, etc., and is suitable for efficient and precise machining of difficult-to-machine materials such as stainless steel, titanium alloy, and high-temperature alloy. Therefore, the present application proposes a medical guide wire inner core electrolytic machining method and designs a special processing equipment to solve the problem of processing the medical guide wire inner core. SUMMARY

[0004] The purpose of the present application is to solve the problem of low processing qualification rate of medical guide wire products caused by the easy breakage or bending of the guide wire inner core during the processing of the existing medical guide wire inner core. The present application designs a device specially used for electrolytic machining of medical guide wire inner core, solves the problem faced by the existing processing technology, and improves the processing qualification rate of medical guide wire products.

[0005] The present application is realized by the following technical solutions:

[0006] A medical guide wire inner core electrolytic machining device, characterized in that the processing device comprises: a device frame, an inner core electrolytic machining unit, two groups of inner core rotating units, and an electrode feeding unit;

[0007] The inner core electrolytic machining unit is arranged on the device frame;

[0008] The two groups of inner core rotating units are arranged on the device frame and are located on the two sides of the inner core electrolytic machining unit, respectively;

[0009] When electrolytic processing is performed: the guide wire inner core blank penetrates the inner core electrolytic processing unit and is connected to two sets of inner core rotating units, which are used to fix and drive the guide wire inner core blank penetrating therein to rotate;

[0010] The electrode feeding unit is arranged on the device frame, and the electrode feeding unit is used to feed the processing electrode arranged therein into the inner core electrolytic processing unit to perform electrolytic processing on the guide wire inner core blank.

[0011] Specifically, the processing electrode has the functions of shaping processing and cutting, and cuts the guide wire inner core blank after processing.

[0012] Further, a medical guide wire inner core electrolytic processing device: the processing device further comprises a processing platform, which is fixedly arranged on the device frame;

[0013] The inner core electrolytic processing unit, the two sets of inner core rotating units, and the electrode feeding unit are arranged on the processing platform.

[0014] Specifically, the two sets of inner core rotating units arranged on the processing platform are also located on the two sides of the inner core electrolytic processing unit. The processing platform is designed to be made of marble.

[0015] Further, a medical guide wire inner core electrolytic processing device: the inner core electrolytic processing unit comprises an electrolytic processing tank and an electrolyte flow channel arranged on the processing platform; the electrolytic processing tank is provided with an inner core processing fine groove penetrating both ends, an electrolyte inlet, and an electrolyte outlet; the electrolyte discharged through the electrolyte outlet flows into the electrolyte flow channel; the processing platform is provided with a drain port communicating with the electrolyte flow channel.

[0016] Specifically, an inner core cutting fine groove can also be arranged in the electrolytic processing tank. The inner core processing fine groove and the inner core cutting fine groove are arranged vertically. The guide wire inner core blank processed is cut off from the inner core cutting fine groove, and two processed guide wire inner cores can be obtained at one time, which is more efficient.

[0017] Further, a medical guide wire inner core electrolytic processing device: the processing device further comprises an inner core tensioning unit arranged on the processing platform;

[0018] One set of inner core rotating units is fixedly arranged on the processing platform, and the other set is fixedly arranged on the inner core tensioning unit; the inner core tensioning unit is used to drive the inner core rotating units to move, so that the guide wire inner core blank is in a tensioned state during processing.

[0019] Specifically, in the electrolytic machining process of the guide wire inner core blank, the inner core tensioning unit is driven to move along the axial direction of the guide wire inner core blank, which drives the inner core rotating unit to move axially, and then the guide wire inner core blank is in a tensioned state, which is beneficial to the smooth progress of the electrolytic machining.

[0020] Further, a medical guide wire inner core electrolytic machining device is provided, wherein the inner core tensioning unit comprises a first sliding plate, a first sliding rail, a first lead screw and a first driving device.

[0021] The first sliding rail is fixedly arranged on the machining platform, the first sliding plate is slidingly arranged on the first sliding rail, the first lead screw is connected with the first sliding plate, and the first driving device is used to drive the first lead screw to rotate, so that the first sliding plate slides on the first sliding rail.

[0022] The lead screw structure formed by the first lead screw and the first sliding plate can accurately control the axial movement precision of one of the inner core rotating units, so that the guide wire inner core blank is in a tensioned state but not too tight during the machining process.

[0023] Further, a medical guide wire inner core electrolytic machining device is provided, wherein the two groups of inner core rotating units each comprise a rotating device and a clamping device.

[0024] The two rotating devices are arranged on the machining platform and the first sliding plate respectively, and the clamping device is arranged on the rotating device and used to fix the guide wire inner core blank.

[0025] Specifically, the clamping device can be arranged on the rotating end of the rotating device to drive the guide wire inner core blank to rotate during machining.

[0026] Further, a medical guide wire inner core electrolytic machining device is provided, wherein the inner core rotating unit further comprises an inner core supporting tube arranged on the rotating device, and the inner core supporting tube is used to provide support for the guide wire inner core blank.

[0027] Specifically, the inner core supporting tube and the clamping device can be arranged on the two ends of the rotating device respectively.

[0028] Further, a medical guide wire inner core electrolytic machining device is provided, wherein the electrode feeding unit comprises a horizontal feeding unit, a vertical feeding unit and a machining electrode.

[0029] The horizontal feeding unit is slidingly arranged on the machining platform, the vertical feeding unit is slidingly arranged on the horizontal feeding unit, and the machining electrode is arranged on the vertical feeding unit and used for electrolytic machining of the guide wire inner core blank.

[0030] During electrolytic machining, the machining position of the shaping electrode corresponds to the center of the guide wire inner core blank.

[0031] The horizontal feeding direction of the horizontal feeding unit is perpendicular to the axial direction of the guide wire inner core blank, and the vertical feeding direction of the vertical feeding unit is perpendicular to the guide wire inner core blank.

[0032] Further, the medical guide wire inner core electrolytic machining device comprises a second sliding plate, a second sliding rail, a second screw rod and a second driving device.

[0033] The third sliding rail and the third driving device are fixedly arranged on the second sliding plate, the electrode mounting seat is slidingly arranged on the third sliding rail, and the third screw rod is rotationally arranged on the second sliding plate and connected with the electrode mounting seat in a screw rod mode.

[0034] The shaping electrode and the cutting electrode are arranged on the electrode mounting seat and have a mounting distance therebetween, and the shaping electrode and the cutting electrode are respectively provided with an electricity leading hole.

[0035] Specifically, the second sliding plate has an L-shaped structure with vertical and horizontal extension directions, the third sliding rail is arranged along the vertical extension direction of the second sliding plate, and the electrode mounting seat can move in the vertical direction.

[0036] Specifically, the forming electrode is processed with two bevels, and a straight line segment with a slightly larger thickness than the cutting electrode exists between the two bevels. The forming electrode is located above the guide wire inner core blank, and the thickness of the forming electrode processing end is about 2-3 times the diameter of the guide wire inner core. The forming electrode installation end is provided with an electricity leading hole (screw hole) for leading electricity. The working end of the cutting electrode is in the form of a thin sheet, and the cutting electrode is also provided with an electricity leading hole (screw hole) for leading electricity. A certain installation distance (about 10 mm) is left between the forming electrode and the cutting electrode to avoid affecting the two electrodes during processing.

[0037] The moving direction of the horizontal feeding unit is perpendicular to the axial direction of the guide wire inner core. The vertical feeding unit is slidingly installed on the horizontal feeding unit, and the electrode mounting plate is fixedly connected to the horizontal feeding unit. The forming electrode and the cutting electrode are distributed along the direction perpendicular to the axial direction of the guide wire inner core and are kept at a certain distance. The positions of the forming electrode and the cutting electrode are changed through the movement of the horizontal feeding unit and the vertical feeding unit, so as to respectively realize the guide wire inner core forming processing (i.e. processing a tapered structure on the guide wire inner core) and the cutting processing (cutting the processed guide wire inner core into two).

[0038] A medical guide wire inner core electrolytic processing method, characterized in that the method uses the processing device described above, and the method comprises the following steps:

[0039] S1, the guide wire inner core blank is arranged in and fixed by the two groups of inner core rotating units; at the same time, the to-be-processed area of the guide wire inner core blank is located in the inner core electrolytic processing unit;

[0040] S2, electrolyte is injected into the inner core electrolytic processing unit, and the electrolyte is immersed in the guide wire inner core blank;

[0041] S3, the processing electrode is moved to face the to-be-processed area of the guide wire inner core blank;

[0042] S4, the guide wire inner core blank is connected to the positive pole of the power supply, and the processing electrode is connected to the negative pole of the power supply. Electricity is supplied for electrolytic processing, and the guide wire inner core blank is driven to rotate by the inner core rotating unit. After the required tapered structure is processed on the guide wire inner core blank, the guide wire inner core blank is cut in the middle by the cutting electrode, and two processed guide wire inner cores are obtained at one time.

[0043] Specifically, in the medical guide wire inner core electrolytic processing, the electrolyte enters the processing area (electrolytic processing tank) from the electrolyte inlet and flows back to the electrolyte flow channel from the electrolyte outlet; at the same time, the guide wire inner core rotates (rotation speed 1-1000 rpm); the forming electrode feeds at a constant speed. After the tapered surface forming processing is completed, the guide wire inner core is cut by the cutting electrode, and the tapered surfaces of the two guide wire inner cores are simultaneously processed and formed.

[0044] Specifically, the length of the guide wire inner core blank is 2 times the length of a single guide wire inner core, the processing device can process two conical surfaces in the middle position of the guide wire inner core blank, and then cut the workpiece blank in the middle to realize one-time processing and forming of two guide wire inner cores.

[0045] The beneficial effects of the present application are:

[0046] (1) The medical guide wire inner core electrolytic processing device designed by the present application has a relatively simple structure, and when the processing device is used for electrolytic processing of the medical guide wire inner core, the problems of difficult to ensure the processing precision, easy to cause the guide wire inner core to break during processing, and easy to cause the processed guide wire inner core to bend, thereby resulting in a low processing qualified rate, etc. can be solved when the end conical structure of the guide wire inner core is processed by using the existing centerless grinding machine. The device of the present application can effectively avoid the above problems faced by the existing processing technology, and the processing device of the present application effectively improves the processing qualified rate of the medical guide wire product.

[0047] (2) The scheme of the present application can realize one-time processing and forming of two guide wire inner cores, so that the processing efficiency of the medical guide wire inner core is also effectively improved. The processing device and the processing method provided by the present application not only can effectively ensure the processing qualified rate of the guide wire inner core, but also can ensure the processing efficiency, and has excellent technical effects. BRIEF DESCRIPTION OF DRAWINGS

[0048] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0049] Figure 1 The structure schematic view of the medical guide wire inner core electrolytic processing device provided for the embodiment 1 of the present application is shown in the figure.

[0050] Figure 2 The structure schematic view of the inner core electrolytic processing unit in the embodiment 1 of the present application is shown in the figure.

[0051] Figure 3 The structure schematic view of the inner core tensioning unit in the embodiment 1 of the present application is shown in the figure.

[0052] Figure 4 The structure schematic view of the electrode feeding unit in the embodiment 1 of the present application is shown in the figure.

[0053] Marked in the figure: 1 device frame, 2 inner core electrochemical machining unit, 3 inner core rotating unit, 4 electrode feeding unit, 5 machining platform, 6 inner core tensioning unit, 7 wire inner core blank, 2-1 electrolytic machining groove, 2-2 electrolyte flow channel, 2-3 liquid outlet, 2-1-1 inner core machining fine groove, 2-1-2 inner core cutting fine groove, 2-1-3 electrolyte inlet, 2-1-4 electrolyte outlet, 3-1 rotating device, 3-2 clamping device, 3-3 inner core support pipe, 4-1 horizontal feeding unit, 4-2 vertical feeding unit, 4-3 machining electrode, 4-1-1 second sliding plate, 4-1-2 second sliding rail, 4-1-3 second lead screw, 4-1-4 second driving device, 4-2-1 electrode mounting seat, 4-2-2 third driving device, 4-3-1 shaped electrode, 4-3-2 cutting electrode, 4-3-3 electricity leading hole, 6-1 first sliding plate, 6-2 first sliding rail, 6-3 first lead screw, 6-4 first driving device. DETAILED DESCRIPTION

[0054] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. The following description of at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0055] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "top", "bottom", etc. indicate the orientation or positional relationship, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included one or more features. Moreover, the terms "first", "second", etc. are used to distinguish similar objects, and do not necessarily be used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0056] As Figures 1-4As shown, a medical guidewire core electrolytic processing device is provided, comprising: a device frame 1, an core electrolytic processing unit 2, two sets of core rotation units 3, an electrode feeding unit 4, a processing platform 5, and a core tensioning unit 6; the processing platform (a processing platform made of marble) 5 is fixedly mounted on the device frame 1.

[0057] like Figure 2 As shown, the inner core electrolytic machining unit 2 includes: an electrolytic machining tank 2-1 and an electrolyte flow channel 2-2 disposed on the machining platform 5; the electrolytic machining tank 2-1 is provided with an inner core machining groove 2-1-1 penetrating both ends, an electrolyte inlet 2-1-3 and an electrolyte outlet 2-1-4; the electrolytic machining tank 2-1 is also provided with an inner core cutting groove 2-1-2 intersecting and perpendicular to the inner core machining groove 2-1-1; the electrolyte discharged through the electrolyte outlet 2-1-4 flows into the electrolyte flow channel 2-2; the machining platform 5 is provided with a drain port 2-3 communicating with the electrolyte flow channel 2-2;

[0058] like Figure 3 As shown, the inner core tensioning unit 6 includes: a first sliding plate 6-1, a first slide rail 6-2, a first lead screw 6-3, and a first driving device 6-4; the first slide rail 6-2 is fixedly mounted on the processing platform 5, the first sliding plate 6-1 is slidably mounted on the first slide rail 6-2, and the first lead screw 6-3 is connected to the first sliding plate 6-1; the first driving device 6-4 is mounted on the processing platform 5 and is used to drive the first lead screw 6-3 to rotate, thereby driving the first sliding plate 6-1 to slide on the first slide rail 6-2; two sets of inner core rotating units 3 are respectively arranged on both sides of the electrolytic processing tank 2-1, one set of inner core rotating units 3 is fixedly mounted on the processing platform 5, and the other set of inner core rotating units 3 is fixedly mounted on the first sliding plate 6-1; the inner core tensioning unit 6 is used to drive the inner core rotating units 3 to move along the axial direction of the guide wire inner core blank 7, so that the guide wire inner core blank 7 is in a tensioned state during processing;

[0059] Both sets of inner core rotating units 3 include: a rotating device 3-1, a clamping device 3-2, and an inner core support tube 3-3; the two rotating devices 3-1 are respectively set on the processing platform 5 and the first sliding plate 6-1; the clamping device 3-2 is set on the rotating device 3-1, and the clamping device 3-2 is used to fix the guide wire inner core blank 7 inserted therein and drive it to rotate through the rotating device 3-1; the inner core support tube 3-3 is set on the rotating device 3-1 at one end opposite to the clamping device 3-2; the inner core support tube 3-3 is used to provide support for the guide wire inner core blank 7 inserted therein, and to prevent the guide wire inner core blank 7 from bending during processing;

[0060] like Figure 4As shown, the electrode feeding unit 4 comprises a horizontal feeding unit 4-1, a vertical feeding unit 4-2 and a processing electrode 4-3; the feeding route of the horizontal feeding unit 4-1 in the horizontal direction is perpendicular to the axial direction of the guide wire inner core blank 7, the feeding route of the vertical feeding unit 4-2 in the vertical direction is perpendicular to the guide wire inner core blank 7 (perpendicular to the horizontal feeding direction); the processing electrode 4-3 is arranged on the vertical feeding unit 4-2 and used for electrolytic processing of the guide wire inner core blank 7; wherein the processing electrode 4-3 comprises a shaped electrode 4-3-1 and a cutting electrode 4-3-2;

[0061] The horizontal feeding unit 4-1 comprises a second sliding plate 4-1-1, a second sliding rail 4-1-2, a second screw rod 4-1-3 and a second driving device 4-1-4; the second sliding rail 4-1-2 is fixedly arranged on the processing platform 5, the second sliding plate 4-1-1 is slidingly arranged on the second sliding rail 4-1-2, the second screw rod 4-1-3 is rotationally arranged on the processing platform 5 and forms a screw rod connection with the second sliding plate 4-1-1, and the second driving device 4-1-4 is arranged on the processing platform 5 and used for driving the second screw rod 4-1-3 to rotate, so that the second sliding plate 4-1-1 is driven to slide horizontally on the second sliding rail 4-1-2 along a direction perpendicular to the axial direction of the guide wire inner core blank 7 through the formed screw rod mechanism;

[0062] The vertical feeding unit 4-2 comprises an electrode mounting seat 4-2-1, a third sliding rail (not shown in the figure), a third screw rod (not shown in the figure) and a third driving device 4-2-2; the third sliding rail and the third driving device 4-2-2 are fixedly arranged on the second sliding plate 4-1-1, the electrode mounting seat 4-2-1 is slidingly arranged on the third sliding rail, and the third screw rod is rotationally arranged on the second sliding plate 4-1-1 and forms a screw rod connection with the electrode mounting seat 4-2-1; the electrode mounting seat 4-2-1 is driven to slide vertically through the third driving device 4-2-2 and the third screw rod; the shaped electrode 4-3-1 and the cutting electrode 4-3-2 are arranged on the electrode mounting seat 4-2-1 and have a mounting distance therebetween (the mounting distance between the two electrodes is about 10 mm, which is to avoid affecting each other during processing); preferably, the shaped electrode 4-3-1 and the cutting electrode 4-3-2 are respectively provided with an electricity leading hole 4-3-3;

[0063] During electrolytic processing, the guide wire inner core blank 7 penetrates the inner core electrolytic processing unit 2 (i.e. penetrates the electrolytic processing tank 2-1) and is arranged in the two groups of inner core rotating units 3, the guide wire inner core blank 7 arranged in the inner core rotating unit 3 is fixed through the clamping device 3-2 in the inner core rotating unit 3, and the guide wire inner core blank 7 is driven to rotate through the rotating device 3-1;

[0064] When electrolytic processing is performed: the vertical feed unit 4-2 is moved above the guide wire inner core blank 7 by the horizontal feed unit 4-1 so that the processing position of the shaped electrode 4-3-1 thereon corresponds to the center of the guide wire inner core blank 7 (at this time the position of the shaped electrode 4-3-1 also corresponds to the inner core processing fine groove 2-1-1); then the vertical processing distance of the shaped electrode 4-3-1 from the guide wire inner core blank 7 can be adjusted by the vertical feed unit 4-2, and electrolytic processing is performed by energization; after processing is completed, the cutting electrode 4-3-2 is first moved to the processing area by the horizontal feed unit 4-1, and then the guide wire inner core is cut in the middle by the cutting electrode 4-3-2 moved by the vertical feed unit 4-2 (when cutting: the position of the cutting electrode 4-3-2 corresponds to the inner core cutting fine groove 2-1-2).

[0065] Embodiment 2

[0066] A medical guide wire inner core electrolytic processing method is provided, characterized in that the method is processed by the processing device provided in Embodiment 1, and the method comprises the following steps:

[0067] S1, the guide wire inner core blank 7 is arranged in the two groups of inner core rotating units 3 and fixed thereby; at the same time, the area to be processed of the guide wire inner core blank 7 is located in the inner core electrolytic processing unit 2 (i.e. the guide wire inner core blank 7 is in the inner core processing fine groove 2-1-1);

[0068] S2, electrolyte is injected into the inner core electrolytic processing unit 2 (i.e. into the electrolytic processing tank 2-1) through the electrolyte inlet 2-1-3, and the electrolyte is immersed in the guide wire inner core blank 7;

[0069] S3, the shaped electrode 4-3-1 is arranged above the area to be processed of the guide wire inner core blank 7 by adjusting the horizontal feed unit 4-1, and the vertical distance between the shaped electrode 4-3-1 and the area to be processed is adjusted by the vertical feed unit 4-2, and subsequent electrolytic processing is performed;

[0070] S4, after adjustment, the guide wire inner core blank 7 is connected to the positive electrode of the power supply, the shaped electrode 4-3-1 is connected to the negative electrode of the power supply, electrolytic processing is performed by energization, the shaped electrode 4-3-1 is uniformly fed to the guide wire inner core blank 7 in the vertical direction; at the same time, the guide wire inner core blank 7 is driven to rotate at a speed of 1-1000 rpm by the inner core rotating unit 3; after the required tapered structure is processed on the guide wire inner core blank 7, the position of the cutting electrode 4-3-2 is adjusted by the electrode feed unit 4, and the cutting electrode 4-3-2 is used to cut the processed guide wire inner core in the middle, so that two processed guide wire inner cores can be obtained at one time.

[0071] The medical guide wire inner core electrolytic processing device designed by the application: the guide wire inner core blank 7 passes through a group of inner core rotating units 3, and then passes through the inner core electrolytic processing unit 2 to enter another group of core rotating units 3; the position of the guide wire inner core blank 7 can be adjusted, so that the center position of the blank is located at the center of the inner core electrolytic processing unit 2 (that is, the center position of the blank is directly opposite the processing position of the shaped electrode 4-3-1); then the guide wire inner core blank 7 is clamped by the clamping device 3-2; and then the guide wire inner core blank 7 is in a tension state by adjusting the axial movement of the inner core tension unit 6. At this time, the installation of the guide wire inner core blank 7 is completed, electrolyte is added to the inner core electrolytic processing unit 2, and the liquid level of the electrolyte in the electrolytic processing tank 2-1 is higher than the guide wire inner core blank 7. The shaped electrode 4-3-1 is directly opposite the to-be-processed area on the guide wire inner core blank 7 (that is, directly opposite the center of the guide wire inner core blank 7, and the center is the to-be-processed area) by the displacement of the horizontal feeding unit 4-1 in the electrode feeding unit 4. The guide wire inner core blank 7 is connected to the positive electrode of the power supply, and the shaped electrode 4-3-1 is connected to the negative electrode of the power supply; at the same time of connecting the power supply, the two groups of rotating devices 3-1 are driven to rotate synchronously, and the shaped electrode 4-3-1 is driven by the vertical feeding unit 4-2 to uniformly move towards the guide wire inner core blank 7 in the vertical direction. After the conical surface (conical structure) on the guide wire inner core blank 7 is processed, the power supply is turned off. The cutting electrode 4-3-2 is moved to the processing position by the displacement of the horizontal feeding unit 4-1, and the cutting electrode 4-3-2 is driven by the vertical feeding unit 4-2 to move towards the inner core cutting groove 2-1-2 (so that the cutting electrode 4-3-2 approaches the processed guide wire inner core), the power supply is connected, and the processed guide wire inner core is cut in the middle by the cutting electrode 4-3-2, so that the conical surfaces of two guide wire inner cores are processed at the same time.

[0072] The application has high processing qualified rate of the medical guide wire inner core, and can process two guide wire inner cores at a time, and has high processing efficiency. The processing device and the processing method can simultaneously ensure the processing qualified rate and the processing efficiency of the guide wire inner core.

[0073] The above is the preferred embodiment of the application, which is used for explaining the application, and does not limit the application. Any obvious changes or changes derived from the technical solutions of the application are still within the protection scope of the application.

Claims

1. A medical guidewire core electrolytic processing device, characterized in that, The processing device comprises a device frame (1), an inner core electrolytic processing unit (2), two groups of inner core rotating units (3) and an electrode feeding unit (4); The inner core electrolytic processing unit (2) is arranged on the device frame (1); The two groups of inner core rotating units (3) are arranged on the device frame (1) and are respectively located on the two sides of the inner core electrolytic processing unit (2); When electrolytic processing is performed, the wire inner core blank (7) penetrates through the inner core electrolytic processing unit (2) and is connected to the two groups of inner core rotating units (3), and the inner core rotating units (3) are used for fixing and driving the wire inner core blank (7) penetrating therethrough to rotate; The electrode feeding unit (4) is arranged on the device frame (1), and the electrode feeding unit (4) is used for feeding the processing electrode (4-3) arranged therein into the inner core electrolytic processing unit (2) to perform electrolytic processing on the wire inner core blank (7); The processing device further comprises an inner core tensioning unit (6), and the inner core tensioning unit (6) is arranged on a processing platform (5); one group of inner core rotating units (3) is fixedly arranged on the processing platform (5), and the other group is fixedly arranged on the inner core tensioning unit (6); the inner core tensioning unit (6) is used for driving the inner core rotating units (3) to move, so that the wire inner core blank (7) is in a tensioning state during processing; The electrode feeding unit (4) comprises a horizontal feeding unit (4-1), a vertical feeding unit (4-2) and a processing electrode (4-3); the horizontal feeding unit (4-1) is slidingly arranged on the processing platform (5), the vertical feeding unit (4-2) is slidingly arranged on the horizontal feeding unit (4-1), and the processing electrode (4-3) is arranged on the vertical feeding unit (4-2) and is used for performing electrolytic processing on the wire inner core blank (7); the processing electrode (4-3) comprises a forming electrode (4-3-1) and a cutting electrode (4-3-2); When electrolytic processing is performed, the processing position of the forming electrode (4-3-1) corresponds to the center of the wire inner core blank (7); the horizontal feeding direction of the horizontal feeding unit (4-1) is perpendicular to the axial direction of the wire inner core blank (7), and the vertical feeding direction of the vertical feeding unit (4-2) is perpendicular to the wire inner core blank (7).

2. The medical guide wire inner core electrolytic processing device according to claim 1, characterized by The processing platform (5) is fixedly arranged on the device frame (1); The inner core electrolytic processing unit (2), the two groups of inner core rotating units (3) and the electrode feeding unit (4) are all arranged on the processing platform (5).

3. The medical guide wire inner core electrolytic processing device according to claim 2, characterized by The inner core electrolytic processing unit (2) comprises an electrolytic processing tank (2-1) and an electrolyte flow channel (2-2) arranged on the processing platform (5); The electrolytic processing tank (2-1) is provided with an inner core processing fine groove (2-1-1) penetrating through both ends, an electrolyte inlet (2-1-3) and an electrolyte outlet (2-1-4); The electrolyte discharged through the electrolyte outlet (2-1-4) flows into the electrolyte flow channel (2-2); the processing platform (5) is provided with a liquid discharge port (2-3) in communication with the electrolyte flow channel (2-2).

4. The medical guide wire inner core electrolytic processing device according to claim 1, characterized in that, The inner core tensioning unit (6) comprises a first sliding plate (6-1), a first sliding rail (6-2), a first lead screw (6-3) and a first driving device (6-4); The first sliding rail (6-2) is fixedly arranged on the processing platform (5), the first sliding plate (6-1) is slidingly arranged on the first sliding rail (6-2), the first lead screw (6-3) is connected with the first sliding plate (6-1), and the first driving device (6-4) is used for driving the first lead screw (6-3) to rotate, so as to drive the first sliding plate (6-1) to slide on the first sliding rail (6-2); the inner core rotating unit (3) is fixedly arranged on the first sliding plate (6-1).

5. The medical guide wire inner core electrolytic processing device according to claim 4, characterized by The two groups of inner core rotating units (3) each comprise a rotating device (3-1) and a clamping device (3-2); The two rotating devices (3-1) are arranged on the processing platform (5) and the first sliding plate (6-1) respectively; the clamping device (3-2) is arranged on the rotating device (3-1), and the clamping device (3-2) is used for fixing the guide wire inner core blank (7) penetrating therein.

6. The medical guide wire inner core electrolytic processing device according to claim 5, characterized by The inner core rotating unit (3) further comprises an inner core supporting pipe (3-3), and the inner core supporting pipe (3-3) is arranged on the rotating device (3-1); The inner core supporting pipe (3-3) is used for providing support for the guide wire inner core blank (7) penetrating therein.

7. The medical guide wire inner core electrolytic processing device according to claim 1, characterized by The horizontal feeding unit (4-1) comprises a second sliding plate (4-1-1), a second sliding rail (4-1-2), a second lead screw (4-1-3) and a second driving device (4-1-4); The second sliding rail (4-1-2) is fixedly arranged on the processing platform (5), the second sliding plate (4-1-1) is slidingly arranged on the second sliding rail (4-1-2), the second lead screw (4-1-3) is connected with the second sliding plate (4-1-1), and the second driving device (4-1-4) is used for driving the second lead screw (4-1-3) to rotate, so as to drive the second sliding plate (4-1-1) to slide horizontally on the second sliding rail (4-1-2) along an axis perpendicular to the guide wire inner core blank (7); The vertical feeding unit (4-2) comprises an electrode mounting seat (4-2-1), a third sliding rail, a third lead screw and a third driving device (4-2-2); The third slide rail and the third driving device (4-2-2) are fixedly arranged on the second slide plate (4-1-1), the electrode mounting base (4-2-1) is slidably arranged on the third slide rail, and the third screw rod is rotatably arranged on the second slide plate (4-1-1) and connected with the electrode mounting base (4-2-1); the electrode mounting base (4-2-1) is driven to vertically slide by the third driving device (4-2-2) and the third screw rod; The shaped electrode (4-3-1) and the cutting electrode (4-3-2) are arranged on the electrode mounting base (4-2-1) and have a mounting distance therebetween; The shaped electrode (4-3-1) and the cutting electrode (4-3-2) are further respectively provided with the electricity leading hole (4-3-3).

8. A medical guide wire inner core electrolytic processing method characterized by comprising: The method adopts the machining device according to any one of claims 1 to 7, and comprises the following steps: S1, the guide wire inner core blank (7) is arranged in the two groups of inner core rotating units (3) and fixed thereby; the to-be-machined area of the guide wire inner core blank (7) is located in the inner core electrolytic machining unit (2); S2, electrolyte is injected into the inner core electrolytic machining unit (2), and the electrolyte is immersed in the guide wire inner core blank (7); S3, the machining electrode (4-3) is made to face the to-be-machined area of the guide wire inner core blank (7) by moving the electrode feeding unit (4); S4, the guide wire inner core blank (7) is connected to the positive pole of the power supply, the machining electrode (4-3) is connected to the negative pole of the power supply, and electrolytic machining is performed by power supply; meanwhile, the guide wire inner core blank (7) is driven to rotate by the inner core rotating unit (3); After the required tapered structure is machined on the guide wire inner core blank (7), the guide wire inner core blank is cut in the middle by the cutting electrode (4-3-2), and two machined guide wire inner cores are obtained.

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