Medical guide wire polishing apparatus
By designing a medical guide wire polishing equipment with multi-station automatic switching, the problem that existing equipment can only polish a single mesh size has been solved, realizing continuous processing and efficient polishing of guide wires, and improving work efficiency and clamping stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SUZHOU LEVEBIO TECH CO LTD
- Filing Date
- 2026-01-05
- Publication Date
- 2026-05-12
AI Technical Summary
Existing medical guide wire polishing equipment can only perform polishing of a single mesh size, resulting in low work efficiency and failing to meet the needs of multi-station polishing.
A medical guide wire polishing device was designed, comprising a housing, loading and unloading port, spindle support frame, and multi-station support. The device achieves automatic switching between multiple stations by changing the spindle position, and combined with a CNC dual-axis polishing machine and guide wire clamp, it realizes continuous processing and self-centering clamping of the guide wire.
It enables automatic switching of the guide wire between multiple polishing stations without the need for reclamping, improves polishing efficiency, ensures continuous processing and clamping stability of the guide wire, and avoids the problem of guide wire twisting.
Smart Images
Figure CN121447526B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of polishing equipment technology, specifically to a medical guide wire polishing device. Background Technology
[0002] Medical guidewires are thin, flexible, and maneuverable linear medical devices, typically made of nickel-titanium alloy. To facilitate operation during surgery, the outer surface of the guidewire needs to be coated or plated. To ensure sufficient adhesion of the coating or plated surface, polishing is required before coating or plating during the guidewire manufacturing process to ensure a sufficiently smooth surface.
[0003] Currently available medical guidewire polishing equipment can be found in CN113941921A, which describes a medical balloon guidewire polishing device. This device uses a clamp to hold the guidewire and rotate it around itself, and then uses a grinder to polish the surface of the guidewire. This type of equipment only has one processing station, but metal polishing requires the use of multiple polishing devices with different grit sizes, polishing in order from smallest to largest grit. Such existing equipment requires changing the polishing head between operations to achieve a good polishing effect, which greatly limits the actual work efficiency.
[0004] Although existing multi-station polishing equipment has polishing stations with different grit sizes, it cannot be directly applied to the polishing of medical guidewires. Summary of the Invention
[0005] The technical problem to be solved by the present invention is that existing medical guide wire polishing equipment can only perform polishing of a single mesh size, and the present invention provides a medical guide wire polishing equipment.
[0006] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows: a medical guide wire polishing device, comprising a housing, a loading and unloading port, a main spindle support frame, and a multi-station bracket. The main spindle support frame is disposed on both sides inside the housing. A transposition main spindle is rotatably mounted on the main spindle support frame. Multiple multi-station brackets are fixedly installed on the transposition main spindle. The loading and unloading port is disposed on the side wall of the housing. Multiple splash-proof cylinders are fixedly mounted around the multi-station brackets. Guide wire clamps are rotatably connected to both ends of the splash-proof cylinders. The guide wire to be polished passes through both ends of the splash-proof cylinders, and the end of the guide wire to be polished is clamped by the guide wire clamp.
[0007] The guide wire clamp includes an annular bracket, a drive ring, and multiple clamping blocks. One end of the annular bracket is provided with multiple first guide rods. The drive ring is slidably connected to the annular bracket through the first guide rods. The axial sliding of the drive ring drives the multiple clamping blocks to move radially in sync. After the clamping blocks retract radially inward, their sidewalls abut against the guide wire to be polished to achieve clamping.
[0008] Furthermore, the clamping block is provided with multiple sliders at one end and a connecting block at the other end, and a sliding groove on the side. The sliders and sliding grooves of the multiple clamping blocks slide and nest with each other. The connecting block is provided with a second guide rod that cooperates with the sliders, and the second guide rod extends into the sliding groove.
[0009] Furthermore, a guide post is provided on the side of the connecting block, and multiple clamping plates are provided at one end of the drive ring. The clamping plates extend to both sides of the guide post, and inclined guide grooves are provided on the clamping plates. The guide post slides in the guide grooves. A limiting slider is provided at the outer end of the connecting block, and multiple limiting grooves are provided around the annular bracket. The limiting slider slides and moves within the limiting grooves.
[0010] Furthermore, the ring bracket is equipped with a spring to push the drive ring for clamping, and an iron core is provided at the outer end of the drive ring. Electromagnets are provided inside the housing on both sides of the loading and unloading port. By rotating the main shaft, the iron core and the electromagnet can be aligned coaxially. The electromagnet can magnetically attract the iron core to drive the drive ring to compress the spring displacement.
[0011] Furthermore, a shifting motor is provided on the side of the main spindle support frame, and the output shaft of the shifting motor is poweredly connected to the shifting main spindle.
[0012] Furthermore, a first gear ring is rotatably sleeved at the end of the shifting spindle, and coaxial internal gear rings and external gear rings are respectively provided at both ends of the first gear ring. A second gear ring is provided at the end of the annular bracket to mesh with the external gear ring. A guide wire rotation motor is provided on the spindle support frame, and a first gear is provided on the output shaft of the guide wire rotation motor to mesh with the internal gear ring.
[0013] Furthermore, a drive shaft is rotatably connected to the outside of the multi-station bracket, and a second gear is provided at both ends of the drive shaft, which meshes with a second gear ring.
[0014] Furthermore, the anti-splash cylinder has guide wire through holes at both ends, a fixing block on the outside of the anti-splash cylinder, and an arc-shaped mounting groove on the outside of the multi-station bracket that matches the outer contour of the anti-splash cylinder. A slot is provided in the middle of the arc-shaped mounting groove, and the fixing block is nested into the slot.
[0015] Furthermore, a CNC dual-axis polishing machine is installed on the inner wall of the outer shell, and an opening is provided on the side of the splash-proof cylinder. The CNC dual-axis polishing machine extends into the splash-proof cylinder through the opening to perform polishing, while simultaneously moving along the extension direction of the guide wire to be polished.
[0016] Compared with the prior art, the present invention has the following advantages:
[0017] 1. It is equipped with a dedicated loading and unloading station a and multiple polishing stations b, c, d, and the automatic switching between stations is achieved through a shifting spindle.
[0018] 2. After being clamped once at the loading and unloading station, the wire is automatically rotated and moved to polishing stations of different mesh sizes for processing. The guide wire does not need to be re-clamped during the entire polishing process, enabling continuous processing.
[0019] 3. The electromagnets on both sides of the loading and unloading station attract the iron core, which overcomes the spring force and drives the clamping block to move radially outward to form a gap, making it easy to insert the guide wire. After the electromagnets are turned off, the spring force drives the clamping block to move radially inward synchronously, realizing self-centering clamping. The operation is simple and quick.
[0020] 4. The synchronous rotation of the clamps at both ends of the guide wire is achieved through the drive shaft, avoiding the problems of guide wire twisting or asynchrony that may occur if only one end is driven. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the structure of the present invention.
[0022] Figure 2 This is a schematic diagram of the internal structure of the outer shell of the present invention.
[0023] Figure 3 This is a schematic diagram of the anti-splash cylinder of the present invention.
[0024] Figure 4 This is a schematic diagram of the main shaft support frame of the present invention.
[0025] Figure 5 This is a schematic diagram of the transposition spindle of the present invention.
[0026] Figure 6 This is a schematic diagram of the structure of the multi-station support of the present invention.
[0027] Figure 7 This is a schematic diagram of the guide wire clamp of the present invention.
[0028] Figure 8 This is a schematic diagram of the iron core structure of the present invention.
[0029] Figure 9 This is a schematic diagram of the drive ring structure of the present invention.
[0030] Figure 10 This is a schematic diagram of the structure of the clamping block of the present invention.
[0031] Figure 11 This is a schematic diagram of the guide wire clamp of the present invention.
[0032] Figure 12 This is a schematic diagram of the cooperation between the electromagnet and the iron core of the present invention.
[0033] As shown in the figure: 1. Outer shell, 2. Loading / unloading port, 3. Spindle support frame, 4. Splash-proof cylinder, 5. CNC dual-axis polishing machine, 6. Shifting motor, 7. Electromagnet, 8. Guide wire clamp, 9. Opening, 10. Guide wire through hole, 11. Shifting spindle, 12. Multi-station bracket, 13. Drive shaft, 14. Second gear, 15. Arc-shaped mounting groove, 16. Slot, 17. Fixing block, 18. First gear, 19. First gear ring, 20. Internal gear ring, 21. External gear ring, 22. Second gear ring, 23. Ring bracket, 24. Drive ring, 25. Clamping block, 26. First guide rod, 27. Iron core, 28. Clamping plate, 29. Guide groove, 30. Connecting block, 31. Guide column, 32. Limiting slider, 33. Second guide rod, 34. Slider, 35. Slide groove, 36. Limiting groove, 37. Guide wire rotary motor. Detailed Implementation
[0034] The present invention will now be described in further detail with reference to the accompanying drawings.
[0035] Combined with appendix Figure 1 Appendix Figure 2 Appendix Figure 3 and attached Figure 4 A medical guide wire polishing device includes a housing 1, a loading and unloading port 2, a main spindle support frame 3, and a multi-station bracket 12. The main spindle support frame 3 is located on both sides inside the housing 1. The main spindle support frame 3 is used to rotate a transposition main spindle 11. Multiple multi-station brackets 12 are fixedly installed on the transposition main spindle 11. The loading and unloading port 2 is located on the side wall of the housing 1. Multiple anti-splash cylinders 4 are fixedly installed around the multi-station brackets 12. Guide wire clamps 8 are rotatably connected to both ends of the anti-splash cylinders 4. The guide wire to be polished passes through both ends of the anti-splash cylinder 4. The end of the guide wire to be polished is clamped by the guide wire clamp 8. An opening 9 is provided on the side of the anti-splash cylinder 4.
[0036] This device has multiple workstations, see attached diagram. Figure 4 Where a refers to the guide wire loading and unloading station, and loading and unloading port 2 is set at the loading and unloading station. b, c and d refer to polishing stations with different polishing grits. Each polishing station is equipped with a CNC dual-axis polishing machine 5. Each CNC dual-axis polishing machine 5 at each polishing station is equipped with polishing wheels of different grits. The polishing grit of the CNC dual-axis polishing machine 5 at polishing stations b, c and d increases sequentially. The CNC dual-axis polishing machine 5 extends into the splash-proof cylinder 4 through the opening 9 for polishing. During polishing, the guide wire clamp 8 rotates, driving the guide wire to rotate, and at the same time, it moves along the extension direction of the guide wire to be polished.
[0037] When using this device to polish the guide wire, the guide wire needs to be loaded into the loading and unloading port 2 first. Then, by controlling the switching spindle 11, the guide wire is rotated to polishing positions b, c and d in sequence for polishing. After the guide wire leaves the loading and unloading position, the splash-proof cylinder 4 at position d will rotate to the loading and unloading position. New guide wires can be continuously loaded for polishing. After the guide wire is polished at position d, it rotates back to the loading and unloading position, is taken out, and a new guide wire to be polished is loaded and the work is repeated.
[0038] Combined with appendix Figure 4 and attached Figure 6 The anti-splash cylinder 4 has guide wire through holes 10 at both ends, and a fixing block 17 is provided on the outside of the anti-splash cylinder 4. The multi-station bracket 12 has an arc-shaped mounting groove 15 that matches the outer contour of the anti-splash cylinder 4 on the outside. A slot 16 is provided in the middle of the arc-shaped mounting groove 15. The fixing block 17 is nested in the slot 16 to prevent the anti-splash cylinder 4 from rotating and to keep the opening 9 on the anti-splash cylinder 4 always radially outward, so that the opening 9 can always be aligned with the loading and unloading port 2 or the CNC dual-axis polishing machine 5 after each station switch.
[0039] Combined with appendix Figure 5 Appendix Figure 7 Appendix Figure 8 Appendix Figure 9 Appendix Figure 11 and attached Figure 12 The guide wire clamp 8 includes an annular bracket 23, a drive ring 24, and multiple clamping blocks 25. One end of the annular bracket 23 is provided with multiple first guide rods 26. The drive ring 24 is slidably connected to the annular bracket 23 through the first guide rods 26. The drive ring 24 slides axially to drive the multiple clamping blocks 25 to move radially synchronously. After the clamping blocks 25 retract radially, their sidewalls abut against the guide wire to be polished to achieve clamping.
[0040] Combined with appendix Figure 10 The clamping block 25 is provided with multiple sliders 34 at one end and a connecting block 30 at the other end, and a sliding groove 35 on the side. The sliders 34 and sliding grooves 35 of the multiple clamping blocks 25 slide and nest with each other. The connecting block 30 is provided with a second guide rod 33 that cooperates with the sliders 34. The second guide rod 33 extends into the sliding groove 35.
[0041] A guide post 31 is provided on the side of the connecting block 30. Multiple clamping plates 28 are provided at one end of the drive ring 24. The clamping plates 28 extend to both sides of the guide post 31. An inclined guide groove 29 is provided on the clamping plate 28. The guide post 31 slides in the guide groove 29. A limiting slider 32 is provided at the outer end of the connecting block 30. Multiple limiting grooves 36 are provided around the annular bracket 23. The limiting slider 32 slides and moves within the limiting grooves 36. A spring is provided on the annular bracket 23 to push the drive ring 24 for clamping. An iron core 27 is provided at the outer end of the drive ring 24. Electromagnets 7 are provided inside the outer casing 1 at both sides of the loading and unloading port 2. By rotating the shifting spindle 11, the iron core 27 and the electromagnet 7 can be aligned coaxially. The electromagnet 7 can magnetically attract the iron core 27 to drive the drive ring 24 to compress the spring and move.
[0042] The spring pushes the drive ring 24 to move axially toward the center of the device, pushing the guide post 31 to slide in the guide groove 29, converting the axial movement of the drive ring 24 into the radial inward displacement of the clamping block 25. Meanwhile, the electromagnet 7 can attract the iron core 27 through magnetic force, causing the drive ring 24 to move axially outward against the spring's magnetic force. This, in turn, causes the guide post 31 to slide in the guide groove 29, resulting in the clamping block 25 being radially displaced outward. After the clamping block 25 is radially displaced outward, a gap will be generated between the nested clamping blocks 25 at the axis of the guide wire clamp 8.
[0043] When installing the guide wire to be polished, first turn on the electromagnet 7 to attract the iron core 27, and insert the end of the guide wire into the gap through the guide wire through hole 10. Then turn off the electromagnet 7, and under the action of the spring, the clamping blocks 25 automatically move radially inward, and the side wall surfaces of each clamping block 25 abut against the guide wire to form a clamp.
[0044] Combined with appendix Figure 6 The main spindle support frame 3 is provided with a shift motor 6 on its side. The output shaft of the shift motor 6 is poweredly connected to the shift spindle 11. The shift motor 6 drives the shift spindle 11 to rotate, so that all the anti-splash cylinders 4 installed on the device rotate with the shift spindle 11 to achieve workstation switching.
[0045] Combined with appendix Figure 6 and attached Figure 7 The end of the shifting spindle 11 is rotatably fitted with a first gear ring 19. The two ends of the first gear ring 19 are respectively provided with an inner gear ring 20 and an outer gear ring 21 on the same axis. The end of the ring bracket 23 is provided with a second gear ring 22 that meshes with the outer gear ring 21. The spindle support frame 3 is provided with a guide wire rotation motor 37. The output shaft of the guide wire rotation motor 37 is provided with a first gear 18 that meshes with the inner gear ring 20.
[0046] Since the guide wire needs to be rotated during grinding and polishing to ensure that the polishing wheel can contact the guide wire 360° and ensure polishing uniformity, the guide wire clamp 8 needs to hold it while rotating around the axis formed by the guide wire. The guide wire rotation motor 37 drives the first toothed ring 19 to rotate through the first gear 18. The first toothed ring 19 drives each of the second toothed rings 22 that mesh with it to rotate. The second toothed rings 22 drive the guide wire clamp 8 to rotate.
[0047] Since both ends of the guide wire are held by guide wire clamps 8, and the guide wire clamps 8 at both ends need to rotate synchronously, a drive shaft 13 is rotatably connected to the outside of the multi-station bracket 12. A second gear 14 is provided at both ends of the drive shaft 13. The second gear 14 meshes with the second gear ring 22. The guide wire clamp 8 at one end of the guide wire transmits power to the other end through the drive shaft 13.
[0048] The present invention and its embodiments have been described above. This description is not restrictive, and the actual structure is not limited thereto. In conclusion, if those skilled in the art, inspired by this description, design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the scope of protection of this invention.
Claims
1. A medical guide wire polishing device, comprising a housing (1), a loading and unloading port (2), a spindle support frame (3), and a multi-station bracket (12), wherein the spindle support frame (3) is disposed on both sides inside the housing (1), and a transposition spindle (11) is rotatably disposed on the spindle support frame (3), and multiple multi-station brackets (12) are fixedly installed on the transposition spindle (11), the loading and unloading port (2) is disposed on the side wall of the housing (1), and multiple anti-splash cylinders (4) are fixedly disposed around the multi-station brackets (12), and guide wire clamps (8) are rotatably connected to both ends of the anti-splash cylinders (4), the guide wire to be polished passes through both ends of the anti-splash cylinders (4), and the end of the guide wire to be polished is clamped by the guide wire clamps (8), characterized in that: The guide wire clamp (8) includes an annular bracket (23), a drive ring (24) and multiple clamping blocks (25). One end of the annular bracket (23) is provided with multiple first guide rods (26). The drive ring (24) is slidably connected to the annular bracket (23) through the first guide rods (26). The axial sliding of the drive ring (24) drives the multiple clamping blocks (25) to move radially in sync. After the clamping blocks (25) radially retract inward, their sidewalls abut against the guide wire to be polished to achieve clamping. Multiple sliders (34) are provided at one end of the clamping block (25), and a connecting block (30) is provided at the other end. A sliding groove (35) is provided on the side. The sliders (34) and sliding grooves (35) of the multiple clamping blocks (25) slide and nest with each other. The connecting block (30) is provided with a second guide rod (33) that cooperates with the slider (34). The second guide rod (33) extends into the sliding groove (35). A guide post (31) is provided on the side of the connecting block (30). Multiple clamping plates (28) are provided at one end of the driving ring (24). The clamping plates (28) extend to both sides of the guide post (31). An inclined guide groove (29) is provided on the clamping plate (28). The guide post (31) slides in the guide groove (29). A limiting slider (32) is provided at the outer end of the connecting block (30). Multiple limiting grooves (36) are provided around the ring bracket (23). The limiting slider (32) slides and moves in the limiting groove (36). The ring bracket (23) is equipped with a spring to push the drive ring (24) for clamping. The outer end of the drive ring (24) is equipped with an iron core (27). The housing (1) is equipped with an electromagnet (7) on both sides of the loading and unloading port (2). By rotating the shifting spindle (11), the iron core (27) and the electromagnet (7) can be aligned coaxially. The electromagnet (7) can magnetically attract the iron core (27) to drive the drive ring (24) to compress the spring force and move.
2. The medical guide wire polishing device according to claim 1, characterized in that: The main spindle support frame (3) is provided with a shift motor (6) on its side, and the output shaft of the shift motor (6) is poweredly connected to the shift spindle (11).
3. The medical guide wire polishing device according to claim 1, characterized in that: The end of the transposition spindle (11) is fitted with a first gear ring (19). The two ends of the first gear ring (19) are respectively provided with an inner gear ring (20) and an outer gear ring (21) on the same axis. The end of the ring bracket (23) is provided with a second gear ring (22) that meshes with the outer gear ring (21). The spindle support frame (3) is provided with a guide wire rotation motor (37). The output shaft of the guide wire rotation motor (37) is provided with a first gear (18) that meshes with the inner gear ring (20).
4. The medical guide wire polishing device according to claim 3, characterized in that: The multi-station bracket (12) is rotatably connected to a drive shaft (13), and a second gear (14) is provided at both ends of the drive shaft (13). The second gear (14) meshes with the second gear ring (22).
5. The medical guide wire polishing device according to claim 1, characterized in that: The anti-splash cylinder (4) has guide wire through holes (10) at both ends, and a fixing block (17) is provided on the outside of the anti-splash cylinder (4). The multi-station bracket (12) has an arc-shaped mounting groove (15) that matches the outer contour of the anti-splash cylinder (4) on the outside. A slot (16) is provided in the middle of the arc-shaped mounting groove (15), and the fixing block (17) is nested into the slot (16).
6. The medical guide wire polishing device according to claim 1, characterized in that: The inner wall of the outer shell (1) is equipped with a CNC dual-axis polishing machine (5), and the side of the anti-splash cylinder (4) is provided with an opening (9). The CNC dual-axis polishing machine (5) extends into the anti-splash cylinder (4) through the opening (9) to polish, and moves along the extension direction of the guide wire to be polished.