A processing device for biodegradable magnesium alloy vascular stents

Abstract

This invention discloses a processing device for biodegradable magnesium alloy vascular stents, comprising a processing device body, tracks, a controller, and a transmission mechanism. The processing device body includes a polishing tank, a sandblasting tank, and a cleaning tank. Multiple transmission mechanisms are arranged between the tracks. Each transmission mechanism includes a transmission rod, a drive mechanism, and multiple positioning mechanisms. Rollers are provided at both ends of the transmission rod, and multiple racks and air holes are provided on the surface of the transmission rod. The drive mechanism includes a servo motor, a sub-control unit, and a transmission gear. The two ends of the transmission gear mesh with the servo motor and the rack, respectively. Each positioning mechanism includes a drive shaft and a cannula. The surface of the drive shaft meshes with the rack, and the cannula is rotatably inserted into the drive shaft. This invention enables continuous and batch sandblasting and electrochemical polishing of vascular stents, which not only improves production efficiency but also helps to reduce the production cost of vascular stents.

Description

Technical Field

[0001] This invention relates to the field of medical device manufacturing technology, specifically to a processing equipment for biodegradable magnesium alloy vascular stents. Background Technology

[0002] Biodegradable stents are vascular stents made from biodegradable materials. Compared to conventionally made stents, biodegradable stents have advantages such as no foreign body sensation after degradation and no recurrence of vascular stenosis. Magnesium alloy vascular stents are mainly composed of elements such as magnesium, aluminum, and zinc, and possess good biocompatibility and mechanical properties. Vascular stents made of magnesium alloys have broad application prospects.

[0003] Conventional vascular stents require a second surgery to remove them after being placed in a blood vessel for a period of time. However, vascular stents made of biodegradable materials do not require surgical removal, reducing patient pain and discomfort. Magnesium alloy vascular stents can effectively reduce the rate of secondary surgeries, bringing better treatment results to patients.

[0004] The production methods for vascular stents mainly include laser engraving, precision casting, and hand weaving. After the stent is formed, it needs to undergo cleaning, grinding, and polishing processes to improve the smoothness of the stent surface and ensure that it will not damage the inner wall of the blood vessel or cause discomfort to the patient during actual use. Currently, stent grinding is mainly done by sandblasting. Sandblasting can remove burrs from the stent surface, has a wide grinding range, and provides good grinding results. For stent polishing, electrochemical polishing is mainly used. Electrochemical polishing can effectively improve the surface smoothness of the stent, making the surface smoother and ensuring the effectiveness in actual use.

[0005] The existing surface treatment processes for vascular stents are relatively independent. After each surface treatment process, workers need to remove the stent and place it on the equipment for the next process. This results in poor continuity between processes and low overall efficiency in surface treatment. Secondly, the structure of vascular stents is also quite unique, and their small size makes them difficult for workers to handle by hand, easily leading to deformation. Therefore, reducing manual transfer between processes is also beneficial for preserving the shape of the vascular stent. Summary of the Invention

[0006] The purpose of this invention is to provide a processing device for biodegradable magnesium alloy vascular stents to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a processing equipment for biodegradable magnesium alloy vascular stents, comprising a processing equipment body, a track, a controller, and a transmission mechanism;

[0008] The processing equipment body includes a polishing tank, a sandblasting tank and two cleaning tanks. Tracks are provided on the inner walls of both sides of the processing equipment body, and multiple transmission mechanisms are provided between the two tracks. A sandblasting mechanism is provided inside the sandblasting tank.

[0009] Each of the transmission mechanisms includes a transmission rod, a drive mechanism, and multiple positioning mechanisms. The transmission rod is provided with rollers at both ends, and the surface of the transmission rod is provided with multiple racks and air holes. The rollers are installed inside the track.

[0010] The drive mechanism includes a servo motor, a sub-control unit, and a transmission gear, with the two ends of the transmission gear meshing with the servo motor and the rack, respectively.

[0011] Each of the positioning mechanisms includes a drive shaft and a tube, the surface of the drive shaft meshing with a rack, and the tube being rotatably inserted into the drive shaft.

[0012] Preferably, the inner wall of each track is provided with a first power strip and a second power strip, and the surface of one end of each transmission mechanism is provided with a first contact piece and a second contact piece;

[0013] The second contact piece is in contact with the surface of the second power strip, and the second contact piece is connected to the drive mechanism.

[0014] Preferably, the first contact piece is in contact with the surface of the first power strip.

[0015] Preferably, the positioning mechanism further includes a conductive plate, a protrusion, and a spring plate. The conductive plate and the protrusion are both disposed on the surface of the drive shaft. The protrusion is connected to the conductive plate, the spring plate is in contact with the surface of the protrusion, and the spring plate is connected to the first contact plate.

[0016] Preferably, the two tracks include multiple ascending and descending segments;

[0017] The multiple rising sections and the multiple descending sections are symmetrically distributed on both sides of the dividing partition between the polishing tank, the sandblasting tank, and the two cleaning tanks;

[0018] The surface of one side of the processing equipment body is provided with multiple air supply mechanisms, and each air supply mechanism is connected to the interior of the rising section.

[0019] Preferably, the sandblasting mechanism includes a plurality of sandblasting pipes, which are located between the positioning mechanisms.

[0020] Preferably, both the surface of the roller and the inner wall surface of the track are provided with meshing tooth grooves.

[0021] Preferably, the inner wall of the drive shaft and the surface of the insertion tube are both provided with meshing threads, and the inner wall of the drive shaft and the surface of the insertion tube are both designed with a tapered shape.

[0022] The cannula has uniformly distributed through holes on its surface.

[0023] Preferably, the controller includes a control motherboard, a signal receiving module, a signal transmitting module, and an operation panel, wherein the control motherboard is connected to the power source of the sandblasting mechanism and the air supply mechanism.

[0024] Preferably, the sub-control unit includes a distance sensor, a signal transmitting module, a signal receiving module, and a control module. The distance sensor is used to monitor the distance between adjacent transmission mechanisms, and the control module is connected to a servo motor.

[0025] The signal transmitting module of the sub-control unit is adapted to the signal receiving module of the controller, and the signal transmitting module of the controller is adapted to the signal receiving module of the sub-control unit.

[0026] The signal transmission modules of each of the sub-control units emit different signal bands.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] 1. This invention, by setting up a track and a transmission mechanism, achieves the effect of increasing the continuity between surface treatment processes of vascular stents, thereby improving the overall efficiency of vascular stent surface treatment. By placing vascular stents in batches on the surface of the positioning mechanism, the transmission mechanism can drive the vascular stents through the sandblasting tank, cleaning tank and polishing tank in sequence, so that the vascular stents can be sandblasted, cleaned and electrochemically polished in sequence. The continuity between surface treatment processes is stronger, the overall efficiency of surface treatment is higher, which is conducive to the batch processing of vascular stents, and can reduce processing costs and ensure processing quality.

[0029] 2. By setting up a driving mechanism, this invention achieves the effect of flexibly adjusting the moving speed of the transmission mechanism to which the driving mechanism belongs according to the needs of the surface treatment process. The driving mechanism can flexibly adjust the moving speed of the transmission mechanism according to the time required for different processes of the vascular stent, so that the vascular stent under the transmission mechanism stays for a sufficient time in a specific processing process. This not only ensures the surface treatment effect of the vascular stent, but also effectively improves the overall flexibility of the processing equipment body. It can be applied to the surface treatment of vascular stents of different specifications and materials.

[0030] 3. By setting a transmission rod, this invention achieves the effect of synchronously driving the transmission mechanism to move and the positioning mechanism to rotate. The rotation of the transmission rod can drive the transmission mechanism to move along the track, and through the meshing between the rack and the transmission shaft, it can synchronously drive the rotation of multiple positioning mechanisms. The rotation of the positioning mechanism can drive the vascular stent placed on the surface of the positioning mechanism to rotate, so that when the vascular stent passes through the sandblasting tank, cleaning tank and polishing tank, the surface of the vascular stent can be more comprehensively treated, thereby improving the surface treatment effect of the vascular stent and reducing the generation of defective products. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the external structure of the processing equipment body in Embodiment 1 of the present invention;

[0032] Figure 2 This is a schematic cross-sectional view of the sandblasting tank in Embodiment 1 of the present invention;

[0033] Figure 3 This is a schematic diagram of the partial appearance structure of the transmission mechanism and track in Embodiment 1 of the present invention;

[0034] Figure 4 This is a partial front view schematic diagram of the transmission mechanism in Embodiment 1 of the present invention;

[0035] Figure 5 As in Embodiment 1 of the present invention Figure 4 Enlarged schematic diagram of structure A in the middle;

[0036] Figure 6 This is a schematic diagram of a partial structure of the transmission mechanism and track in Embodiment 1 of the present invention;

[0037] Figure 7 This is a partial external structural diagram of the transmission rod in Embodiment 1 of the present invention;

[0038] Figure 8 This is a partial main cross-sectional view of the transmission mechanism in Embodiment 1 of the present invention;

[0039] Figure 9 As in Embodiment 1 of the present invention Figure 8 Enlarged schematic diagram of the B-structure.

[0040] In the picture:

[0041] 100. Processing equipment body; 101. Cleaning tank; 102. Polishing tank; 103. Sandblasting tank; 110. Track; 111. Ascending section; 112. Descending section; 113. First power supply bar; 114. Second power supply bar; 120. Sandblasting mechanism; 121. Sandblasting pipe; 130. Controller; 140. Air supply mechanism;

[0042] 200. Transmission mechanism; 210. Positioning mechanism; 211. Drive shaft; 212. Insertion tube; 213. Conducting plate; 214. Protrusion; 215. Spring; 220. Drive mechanism; 221. Servo motor; 222. Sub-control unit; 223. Transmission gear; 230. First contact piece; 240. Second contact piece; 250. Transmission rod; 251. Rack; 252. Air hole; 253. Roller. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] Please see Figures 1 to 9 The present invention provides the following two embodiments:

[0045] Example 1:

[0046] Please see Figure 1 A processing device for biodegradable magnesium alloy vascular stents includes a processing device body 100, a track 110, a controller 130, and a transmission mechanism 200.

[0047] Please see Figure 1 The processing equipment body 100 includes a polishing tank 102, a sandblasting tank 103 and two cleaning tanks 101. The sandblasting tank 103 is equipped with a sandblasting mechanism 120, which includes multiple sandblasting pipes 121. The sandblasting pipes 121 are located between the positioning mechanisms 210. The sandblasting pipes 121 can spray abrasive sand onto the surface of the vascular stent on the surface of the positioning mechanism 210. With the rotation of the positioning mechanism 210, the abrasive sand can fully contact the surface of the vascular stent, thereby completely removing the burrs remaining on the surface of the vascular stent.

[0048] Please see Figure 1 and Figure 2 The bottom of the sandblasting tank 103 is equipped with a collection tank for collecting the abrasive sand. The polishing tank 102 and the two cleaning tanks 101 are each equipped with a liquid filling pipe and a liquid drain pipe on one side for adding and discharging the electrolyte in the polishing tank 102 and the cleaning solution in the cleaning tanks 101. Tracks 110 are installed on the inner walls of both sides of the processing equipment body 100.

[0049] Please see Figure 1 and Figure 2 The two tracks 110 include multiple ascending segments 111 and descending segments 112.

[0050] Multiple ascending sections 111 and multiple descending sections 112 are symmetrically distributed on both sides of the dividing partition between the polishing tank 102, the sandblasting tank 103, and the two cleaning tanks 101.

[0051] Please see Figures 4 to 6 The inner wall of the track 110 is provided with a first power strip 113 and a second power strip 114, and the surface of one end of each transmission mechanism 200 is provided with a first contact piece 230 and a second contact piece 240.

[0052] The second contact 240 contacts the surface of the second power strip 114 and is connected to the drive mechanism 220. The first contact 230 contacts the surface of the first power strip 113. The first power strip 113, the second power strip 114, the first contact 230, and the second contact 240 are all made of copper. The first power strip 113 is only located inside the track 110 in the area where the polishing groove 102 is located.

[0053] The first power bar 113 and the second power bar 114 inside the track 110 are used to provide power to the transmission mechanism 200 and also maintain the mobility of the transmission mechanism 200. During the movement of the transmission mechanism 200, the power supply to the electronic equipment inside the transmission mechanism 200 can still be maintained.

[0054] Please see Figures 1 to 4 Multiple transmission mechanisms 200 are provided between the two tracks 110. Each transmission mechanism 200 includes a transmission rod 250, a drive mechanism 220, and multiple positioning mechanisms 210.

[0055] Please see Figure 7 The transmission rod 250 has rollers 253 at both ends, and the surface of the transmission rod 250 is provided with multiple racks 251 and air holes 252. The rollers 253 are installed inside the track 110. The surface of the rollers 253 and the inner wall surface of the track 110 are provided with meshing tooth grooves. The tooth grooves mesh the rollers 253 with the inner wall of the track 110. When the rollers 253 rotate, they drive the transmission mechanism 200 to move along the track 110.

[0056] Please refer to the figure. Figure 8 and Figure 9The positioning mechanism 210 also includes a conductive plate 213, a protrusion 214, and a spring 215. The conductive plate 213 and the protrusion 214 are both disposed on the surface of the transmission shaft 211. The protrusion 214 is connected to the conductive plate 213, and the spring 215 is in contact with the surface of the protrusion 214 and is connected to the first contact plate 230. The first contact plate 230 contacts the protrusion 214 through the spring 215, which achieves the effect of maintaining the circuit connection between the first contact plate 230 and the conductive plate 213. That is, when the vascular stent is sleeved on the surface of the positioning mechanism 210, the top of the vascular stent contacts the conductive plate 213. The power supply is connected to the vascular stent in sequence through the first power strip 113, the first contact plate 230, the spring 215, the protrusion 214, and the conductive plate 213, thereby energizing the vascular stent. When the vascular stent is immersed in the polishing tank 102, it ensures that the vascular stent can react with the electrolyte in the polishing tank 102 to perform electrochemical polishing treatment on the surface of the vascular stent.

[0057] Please see Figure 8 The drive mechanism 220 includes a servo motor 221, a sub-control unit 222, and a transmission gear 223. The two ends of the transmission gear 223 are respectively engaged with the servo motor 221 and the rack 251.

[0058] Each positioning mechanism 210 includes a drive shaft 211 and an insertion tube 212. The surface of the drive shaft 211 meshes with the rack 251. The insertion tube 212 is rotatably inserted into the drive shaft 211. The rotation of the drive rod 250 can drive the transmission mechanism 200 to move along the track 110. Through the meshing between the rack 251 and the drive shaft 211, multiple positioning mechanisms 210 can be driven to rotate synchronously. The rotation of the positioning mechanism 210 can drive the vascular stent placed on the surface of the positioning mechanism 210 to rotate. When the vascular stent passes through the sandblasting tank 103, the cleaning tank 101 and the polishing tank 102, the surface of the vascular stent can be more comprehensively treated, thereby improving the surface treatment effect of the vascular stent and reducing the generation of defective products.

[0059] Both the inner wall of the drive shaft 211 and the surface of the cannula 212 are provided with meshing threads, and both the inner wall of the drive shaft 211 and the surface of the cannula 212 are tapered. In practical applications, the operator can separate the cannula 212 from the drive shaft 211, put the vascular stent to be processed onto the surface of the drive shaft 211 and the cannula 212, and insert the cannula 212 into the drive shaft 211. By rotating the threads, the gap between the bottom of the drive shaft 211 and the bottom of the cannula 212 is shortened until the vascular stent is stably supported and the top of the vascular stent is reliably in contact with the surface of the conduction plate 213, and the vascular stent installation is completed.

[0060] The surface of the insertion tube 212 is provided with uniformly distributed through holes, and a plurality of air supply mechanisms 140 are provided on one side of the processing equipment body 100, and each air supply mechanism 140 is connected to the interior of the rising section 111.

[0061] When the transmission mechanism 200 moves to the rising section 111 of the track 110, that is, when the transmission mechanism 200 is about to leave the current process and enter the next process, when the transmission mechanism 200 is in the rising section 111, the air supply mechanism 140 supplies air to both ends of the transmission mechanism 200. The air enters the interior through both ends of the transmission rod 250, and enters the positioning mechanism 210 through the air hole 252. It is discharged through the through hole on the surface of the insertion tube 212. After the air is discharged, it acts on the vascular stent sleeved on the surface of the positioning mechanism 210. Through the air flow, the moisture on the surface of the vascular stent is removed, keeping the surface of the vascular stent clean.

[0062] By placing vascular stents in batches on the surface of the positioning mechanism 210, the vascular stents can be driven through the sandblasting tank 103, the cleaning tank 101 and the polishing tank 102 in sequence by the transmission mechanism 200. This allows the vascular stents to undergo sandblasting, cleaning and electrochemical polishing in sequence. The continuity between surface treatment processes is stronger and the overall efficiency of surface treatment is higher. This is conducive to the batch processing of vascular stents, which can reduce processing costs and ensure processing quality.

[0063] The controller 130 includes a control motherboard, a signal receiving module, a signal transmitting module, and an operation panel. The control motherboard is connected to the power source of the sandblasting mechanism 120 and the air supply mechanism 140, and is used to flexibly control the flow rate of compressed air, the amount of abrasive used, and the air supply during the sandblasting process.

[0064] The sub-control unit 222 includes a distance sensor, a signal transmitting module, a signal receiving module, and a control module. The distance sensor is used to monitor the distance between adjacent transmission mechanisms 200. The control module is connected to the servo motor 221. The sub-control unit 222 also includes a small storage battery for temporarily supplying power to the pre-matching of the signal transmitting module and the signal receiving module.

[0065] The signal transmitting module of the sub-control unit 222 is adapted to the signal receiving module of the controller 130, and the signal transmitting module of the controller 130 is adapted to the signal receiving module of the sub-control unit 222.

[0066] Each sub-control unit 222 emits a different signal band from its signal transmission module, which is used to distinguish the drive mechanism 220 on multiple transmission mechanisms 200 and avoid signal transmission confusion.

[0067] In actual use, the staff can detach the transmission mechanism 200 from the track 110 and place vascular stents in batches on the surface of the positioning mechanism 210. The vascular stents to be processed are then fitted onto the surfaces of the drive shaft 211 and the cannula 212, and the cannula 212 is inserted into the drive shaft 211. By rotating the thread, the gap between the bottom of the drive shaft 211 and the bottom of the cannula 212 is shortened until the vascular stents are stably supported and the top of the vascular stents are reliably in contact with the surface of the conduction plate 213. The installation of the vascular stents is then completed.

[0068] The staff opens the drive mechanism 220 to which the transmission mechanism 200 belongs, matches the signal transmitting module and signal receiving module in the drive mechanism 220 with the controller 130, and after the matching is completed, places the transmission mechanism 200 in the track 110.

[0069] In actual processing, the processing time required for sandblasting, cleaning, and electrochemical polishing of vascular stents is the same.

[0070] After the drive mechanism 220 of the multiple transmission mechanisms 200 is matched with the controller 130, the controller 130 sends a transmission speed setting signal through the signal transmission module. The signal receiving module of the drive mechanism 220 receives the transmission speed setting signal and feeds the signal back to the control module of the drive mechanism 220. The control module issues a speed control command to the servo motor 221, thereby keeping the servo motor 221 running at a certain speed, so that the multiple transmission mechanisms 200 move along the track 110 at the same speed.

[0071] As the transmission mechanism 200 moves at the same speed in the track 110, the vascular stent below the transmission mechanism 200 sequentially passes through the sandblasting tank 103, the cleaning tank 101, and the polishing tank 102. After leaving the polishing tank 102, it enters the next cleaning tank 101, where the surface of the vascular stent undergoes comprehensive sandblasting, cleaning, electrochemical polishing, and further cleaning. This results in a smooth, burr-free, and clean surface for the vascular stent.

[0072] Based on the technical effect that the multiple transmission mechanisms 200 in this embodiment move at the same speed, another embodiment of the present invention is derived.

[0073] Example 2:

[0074] Based on the technical effect of the same processing time for sandblasting, cleaning, electrochemical polishing, and re-cleaning in Embodiment 1 of the present invention, another embodiment of the present invention is derived, namely, the case where the required time for sandblasting, cleaning, electrochemical polishing, and re-cleaning is different.

[0075] After the drive mechanism 220 of the multiple transmission mechanisms 200 is matched with the controller 130, the controller 130 sends a transmission speed setting signal through the signal transmission module. The transmission speed setting signal includes the sandblasting stage, the first cleaning stage, the electrochemical polishing stage, and the second cleaning stage. According to the actual processing time required for each stage, the controller 130 sets the time for the sandblasting stage, the first cleaning stage, the electrochemical polishing stage, and the second cleaning stage respectively, and converts the time information into electrical signals, which are then sent by the controller 130 to the drive mechanism 220 of the multiple transmission mechanisms 200 respectively.

[0076] The signal receiving module of the drive mechanism 220 receives the transmission speed setting signal and feeds the signal back to the control module of the drive mechanism 220. The control module then issues a speed control command to the servo motor 221. The servo motor 221 will execute different speeds during the sandblasting, primary cleaning, electrochemical polishing, and secondary cleaning stages, thereby adjusting the time that the transmission mechanism 200 stays in the cleaning tank 101, polishing tank 102, and sandblasting tank 103, ensuring that the vascular stent has sufficient processing time during the sandblasting, primary cleaning, electrochemical polishing, and secondary cleaning stages.

[0077] The drive mechanism 220 can flexibly adjust the moving speed of the transmission mechanism 200 according to the time required for different processes of the vascular stent, so that the vascular stent under the transmission mechanism 200 stays for a sufficient time in a specific processing process. This not only ensures the surface treatment effect of the vascular stent, but also effectively improves the overall flexibility of the processing equipment body 100. It can be applied to the surface treatment of vascular stents of different specifications and materials, making the surface of the vascular stent smooth, burr-free and clean.

[0078] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A processing device for biodegradable magnesium alloy vascular stents, characterized in that: It includes the processing equipment body (100), track (110), controller (130) and transmission mechanism (200). The processing equipment body (100) includes a polishing tank (102), a sandblasting tank (103) and two cleaning tanks (101). Tracks (110) are provided on the inner walls of both sides of the processing equipment body (100), and multiple transmission mechanisms (200) are provided between the two tracks (110). A sandblasting mechanism (120) is provided inside the sandblasting tank (103). Each of the transmission mechanisms (200) includes a transmission rod (250), a drive mechanism (220), and a plurality of positioning mechanisms (210). The transmission rod (250) is provided with rollers (253) at both ends, and the surface of the transmission rod (250) is provided with a plurality of racks (251) and air holes (252). The rollers (253) are installed inside the track (110). The inner wall of each track (110) is provided with a first power strip (113) and a second power strip (114), and the surface of one end of each transmission mechanism (200) is provided with a first contact piece (230) and a second contact piece (240). The second contact piece (240) is in contact with the surface of the second power strip (114), and the second contact piece (240) is connected to the drive mechanism (220); The first contact piece (230) is in contact with the surface of the first power strip (113); The two said tracks (110) include multiple ascending segments (111) and descending segments (112). Multiple rising sections (111) and multiple falling sections (112) are symmetrically distributed on both sides of the decomposition partition of the polishing tank (102), the sandblasting tank (103) and the two cleaning tanks (101); The surface of one side of the processing equipment body (100) is provided with a plurality of air supply mechanisms (140), and each air supply mechanism (140) is connected to the interior of the rising section (111); The drive mechanism (220) includes a servo motor (221), a sub-control unit (222), and a transmission gear (223), the two ends of which mesh with the servo motor (221) and the rack (251), respectively; Each of the positioning mechanisms (210) includes a drive shaft (211) and a tube (212), the surface of the drive shaft (211) meshing with a rack (251), and the tube (212) being rotatably inserted into the drive shaft (211); The positioning mechanism (210) further includes a conductive plate (213), a protrusion (214), and a spring plate (215). The conductive plate (213) and the protrusion (214) are both disposed on the surface of the transmission shaft (211). The protrusion (214) is connected to the conductive plate (213), and the spring plate (215) is in contact with the surface of the protrusion (214). The spring plate (215) is connected to the first contact plate (230).

2. The processing equipment for a biodegradable magnesium alloy vascular stent according to claim 1, characterized in that: The sandblasting mechanism (120) includes a plurality of sandblasting pipes (121) located between the positioning mechanism (210).

3. The processing equipment for a biodegradable magnesium alloy vascular stent according to claim 1, characterized in that: The surface of the roller (253) and the inner wall surface of the track (110) are both provided with meshing tooth grooves.

4. The processing equipment for a biodegradable magnesium alloy vascular stent according to claim 1, characterized in that: The inner wall of the drive shaft (211) and the surface of the insertion tube (212) are both provided with meshing threads, and the inner wall of the drive shaft (211) and the surface of the insertion tube (212) are both designed with a tapered shape. The surface of the cannula (212) has uniformly distributed through holes.

5. The processing equipment for a biodegradable magnesium alloy vascular stent according to claim 1, characterized in that: The controller (130) includes a control motherboard, a signal receiving module, a signal transmitting module and an operation panel. The control motherboard is connected to the power source of the sandblasting mechanism (120) and the air supply mechanism (140).

6. The processing equipment for a biodegradable magnesium alloy vascular stent according to claim 5, characterized in that: The sub-control unit (222) includes a distance sensor, a signal transmitting module, a signal receiving module and a control module. The distance sensor is used to monitor the distance between adjacent transmission mechanisms (200), and the control module is connected to a servo motor (221). The signal transmitting module of the sub-control unit (222) is adapted to the signal receiving module of the controller (130), and the signal transmitting module of the controller (130) is adapted to the signal receiving module of the sub-control unit (222); The signal transmission modules of each of the sub-control units (222) emit different signal bands.

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