CN212426236U - Clamp for metal support electrochemical polishing and device comprising same - Google Patents
Clamp for metal support electrochemical polishing and device comprising same Download PDFInfo
- Publication number
- CN212426236U CN212426236U CN202021030679.6U CN202021030679U CN212426236U CN 212426236 U CN212426236 U CN 212426236U CN 202021030679 U CN202021030679 U CN 202021030679U CN 212426236 U CN212426236 U CN 212426236U
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- support
- bearing
- electrochemical polishing
- backstop
- polishing
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- 238000005498 polishing Methods 0.000 title claims abstract description 53
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 34
- 239000002184 metal Substances 0.000 title claims abstract description 34
- 239000000463 material Substances 0.000 claims description 11
- 239000004020 conductor Substances 0.000 claims description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000011133 lead Substances 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 229910001256 stainless steel alloy Inorganic materials 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000003792 electrolyte Substances 0.000 description 9
- 238000007517 polishing process Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 5
- 238000003795 desorption Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- WAIPAZQMEIHHTJ-UHFFFAOYSA-N [Cr].[Co] Chemical class [Cr].[Co] WAIPAZQMEIHHTJ-UHFFFAOYSA-N 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910001000 nickel titanium Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Images
Abstract
The utility model discloses a metal support is anchor clamps for electrochemical polishing and contain its device, this anchor clamps are provided with a load-bearing unit, load-bearing unit has and is provided with support entering end and backstop end on the relative both ends respectively, be the carrier segment between support entering end and the backstop end, the carrier segment is used for bearing the metal support of treating the polishing that penetrates through support entering end, the backstop end is equipped with the backstop structure, the backstop structure is the continuous or discontinuous tubaeform periphery that one or more stop part constitute, a support that is used for preventing to bear is deviate from the backstop end. The fixture for metal support electrochemical polishing can improve the polishing effect of the surface of the support and improve the yield and production efficiency of products.
Description
Technical Field
The utility model belongs to the technical field of implantable medical instrument processing technique and specifically relates to a device that electrochemical polishing of medical metal support used anchor clamps and contained it is related to.
Background
The existing medical metal stent can be formed by laser cutting of metal pipes such as stainless steel, nickel-titanium alloy, cobalt-chromium alloy and the like, the surface of the cut stent is rough, more slag, burrs and flashes generally remain, and if the stent is not processed, the stent can cause serious damage to a human body after being implanted into the human body. Therefore, the stent preparation process typically includes polishing the stent surface.
The conventional method is to adopt an electrochemical polishing process, a metal stent is placed in an electrolytic cell and immersed by electrolyte, the stent is communicated with a power anode, a power cathode is fixed in the electrolytic cell, the electrochemical reaction during electrification is utilized to carry out oxidation polishing on the anode stent, and a rough layer and a sharp part on the surface of the stent are removed, wherein the electrochemical polishing process of some stents can be referred to Chinese patent applications CN203890489, CN102251269, CN104619892, CN205839182, CN202090091 and the like.
However, the electrochemical polishing device of the prior art stent still has some defects, for example, chinese patent CN104619892 discloses a fixture for electropolishing, which is composed of a swing structure and a transfer mechanism, the position of the stent is adjusted by the transfer structure, the contact point between the electrode which is not polished and the stent can be polished, but because the stent is transversely placed in the polishing solution, the bubbles generated in the polishing process may not be discharged in time, and the problems of uneven surface polishing, unsmooth part of point positions and the like of the stent in the cavity are easily caused.
Disclosure of Invention
An object of the utility model is to provide an anchor clamps are used in support electrochemical polishing, utilize this anchor clamps centre gripping support to carry out electrochemical polishing, can improve support surface polishing effect, improve product yield and production efficiency.
The utility model provides a metal support is anchor clamps for electrochemical polishing, includes electrically conductive load-bearing unit, load-bearing unit has support entering end and the backstop end that sets up respectively on the relative both ends, load-bearing unit is for bearing the weight of the section between support entering end and backstop end for bear the weight of the metal support of treating polishing that penetrates through support entering end, the backstop end is equipped with backstop structure, backstop structure is the continuous or discontinuous tubaeform periphery that one or more backstop piece constitute, be used for preventing the support that bears deviate from the backstop end, tubaeform periphery encircles the extension line that bears the section length direction.
The bearing section is used for bearing the metal bracket to be polished, which penetrates through the bracket entrance end, and at least part of the bearing section is in contact with the metal bracket to be polished.
The material used for preparing the carrying unit is a conductive material, preferably an inert material, for example, the inert conductive material may be selected from one of the following materials: copper, lead, titanium, platinum, stainless steel alloys.
Some embodiments of the present invention provide a stop structure, which is formed by a spiral thread-like member, the starting end of the spiral thread-like member is fixedly connected to the carrying section, and the spiral thread-like member diverges outward along the length direction thereof and extends spirally to the end thereof.
Furthermore, the bearing unit can be formed by winding a metal rod, one end of the metal rod is wound into a spiral shape to form a stop structure, and the other end of the metal rod is a support entering end.
Some embodiments of the present invention further provide another implementation manner of the stopping structure, where the stopping structure is formed by at least three coplanar linear members, one end of each of the at least three coplanar linear members is fixedly connected to the carrying section, and the at least three coplanar linear members form a discontinuous trumpet-shaped periphery on the coplanar surfaces.
In a further development of the invention, the stop structure may also comprise a reinforcement provided which connects different threadlike members or different portions of the same threadlike member on the flared periphery.
The carrier section according to the invention may be straight, but it may also be of other shapes, for example either arcuate or helical, as the skilled person will select as desired.
Another object of the present invention is to provide an apparatus for electrochemical polishing of metal support, which comprises any one of the above-mentioned jigs, and further comprises a power rotating mechanism, wherein the power rotating mechanism has a holding unit matched with the support entrance end of the supporting unit, and is used for holding and rotating the supporting unit.
The utility model discloses anchor clamps backstop structure has tubaeform periphery, it can be rotated, thereby can promote the flow of electrolytic polishing liquid, help the circulation of polishing liquid outside the support intracavity, especially, the desorption of the bubble that the polishing liquid that flows can promote the support surface to produce in the polishing process, avoid the too much influence to the support surface polishing of bubble enrichment, the electrolyte that flows simultaneously can also diffuse the ionic product and the heat in the polishing process to the periphery rapidly, avoid the concentration difference of effective electrolyte around the support too big to cause the influence to the support surface.
Additionally, the utility model discloses anchor clamps do not use mechanical locking mechanism, and the support can move about on anchor clamps, and the support does not have the dead region of lock, has consequently avoided the bad problem of dead regional polishing of lock.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of an embodiment of an apparatus for electrochemical polishing of a metal support according to the present invention;
FIG. 2 is a schematic view of an embodiment of the fixture for electrochemical polishing of a metal stent according to the present invention, wherein the stop structure is a spiral structure;
FIG. 3 is a schematic illustration of bubble diffusion during chemical polishing of a stent in an electrolyte;
FIG. 4 is a schematic view of a bracket of an embodiment of the present invention in contact with a load-bearing section of a clamp, wherein a stop structure of the clamp is not shown;
fig. 5 is a schematic structural view illustrating a stopper structure provided with a reinforcing member according to an embodiment of the present invention;
FIG. 6 is a simplified structural schematic diagram of an embodiment of the present invention in which the stop structure is formed by three coplanar linear members;
fig. 7 is a top view of the embodiment shown in fig. 6.
In the drawings, reference numerals are explained as follows:
1 is a bracket entrance end; 2 is a bearing section; 3, a stop end; 31 is a stop structure; 32 is a reinforcing member; 4 is a bracket; 5 is a power rotating mechanism; 6 is electrolyte; 7 is the bubble generated by electrolysis.
Detailed Description
The present invention will be described in further detail with reference to the attached drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the present invention is not limited to the illustrated embodiments.
The utility model provides an anchor clamps for metal support electrochemical polishing, include the load-bearing unit that can make by conductor material, load-bearing unit has support entering end and the backstop end that sets up respectively on the relative both ends, load-bearing unit is for bearing the weight of the section between support entering end and backstop end, the bearing the weight of the section is used for bearing the metal support of treating the polishing that penetrates through support entering end, the backstop end is equipped with the backstop structure, the backstop structure has the continuous or discontinuous tubaeform periphery that one or more stop parts constitute, a support for preventing to bear deviates from the backstop end, tubaeform periphery is around the extension line that bears the length direction of segment.
An embodiment of the aforementioned clamp, as shown in fig. 1, the bracket 4 is supported by a clamp supporting section, and the supporting section 2 penetrates through the inner cavity of the bracket 4 and cooperates with a stopping structure 31 disposed at the stopping end 3 of the clamp, so that the bracket 4 is held by the clamp. Wherein the stop structure 31 contacts the bottom of the bracket to form at least one stop contact point. In operation, the support can be penetrated from the support entrance end 1 of the clamp, and the top of the support can be contacted with the bearing section 2, so that the support is stably supported by the clamp in contact with the two ends of the support. Meanwhile, when the loaded bracket is subjected to electrochemical polishing operation, one or both of the bracket and the clamp can be connected with the power supply anode. The utility model discloses preferably the anchor clamps are connected with the power positive pole and the support is not connected with the power positive pole, and at this moment, the contact point of anchor clamps and support is regarded as electrically conductive contact simultaneously.
Fig. 1 and 2 show that the stop structure 31 may be formed by a helical thread-like member, the starting end of which is fixedly connected to the carrier section, the helical thread-like member diverging outwardly along its length, the helix extending to its end. The helical stop member is a continuous structure extending downwardly around the length of the carrier section and the helical thread member may be considered to form a flared outer periphery that remains continuous in the circumferential direction.
On the one hand, the helical wire-like member can prevent the stent to be polished from coming out of the stopper end. Obviously, in order to prevent the carried holder from coming out of the stop end, the outer diameter of the flared periphery of the stop structure 31 is greater than the outer diameter of the holder 4 to be polished.
On the other hand, referring to fig. 3, the stent is carried by the holder so as to be placed in the polishing solution substantially longitudinally, the holder is rotated, the rotating spiral-wire-shaped member promotes the flow of the electrolyte, the enlarged opening at the bottom portion of the holder promotes the circulation of the electrolyte into and out of the stent cavity by guiding the electrolyte, and helps promote the desorption of bubbles generated on the surface of the stent during the chemical polishing process, thereby promoting the continuity of polishing, and preventing the excessive bubbles from being concentrated on the surface of the stent, particularly the surface of the lumen of the stent, and preventing the uneven polishing of the surface of the stent due to the enrichment of bubbles. The electrolyte flow around the surface of the support is accelerated in the process that the surfaces of the rotating spiral linear components and the desorption support with bubbles are upwards blown out, so that metal ion products separated out by polishing are diffused all around more quickly, the concentration difference of effective polishing liquid on the inner periphery and the outer periphery of the support is reduced, and the influence on the polishing quality of the support caused by the uneven concentration of the ions in the polishing liquid is avoided.
Referring to fig. 4, the carrier section 2 may also be arranged to contact a larger area of the metal carrier to be polished, as opposed to the carrier section and carrier contact shown in fig. 1 or 2. For example, the relative angle between the bearing section and the stopper structure can be adjusted, or the position of the stopper contact point can be adjusted, so that the inner cavity of the stent is completely attached to the bearing section. The support fully contacts with the bearing section, so that the electrode contact area of the support can be increased, the current density of the contact area of the support and the anode electrode is reduced, the current or voltage distribution in the support is more uniform, and the occurrence of ablation due to overhigh local current is reduced.
Furthermore, in order to increase the contact area between the bearing segment and the stent, the structure or shape of the bearing segment can be adjusted or selected by those skilled in the art according to the needs, for example, the bearing segment 2 can be configured as an arc structure, a spiral structure, or the like.
The clamp shown in fig. 1 and 2 may be formed by winding a metal rod, one end of which is wound in a spiral shape to form the stopper 31, and the other end of which is the stent entry end 1. The linear part of the metal rod can be used as a carrier section 2, which together with the stop structure 31 of the stop end 3 forms a carrier unit.
Referring to fig. 5, the stopper structure 31 may be further provided with a reinforcement 32, and the reinforcement 32 connects two adjacent portions in the pitch direction of the screw stopper member. The reinforcement 32 connects different portions of the same linear member to the flared outer periphery of the stopper member, so that the flared outer periphery can be stably maintained, and a stable flow guide function is ensured. The stop structure of the present invention is not limited to that shown in fig. 1, 2 or 5, and those skilled in the art can select the stop member that can form a horn-shaped periphery as required.
For example, another embodiment of the stop structure may be provided, as shown in fig. 6 and 7, the stop structure 31 is formed by three coplanar linear members, one end of each of the three linear members is fixedly connected to the carrying section, the three linear members form a circumferentially discontinuous flared periphery on the coplanar surfaces, and as shown in fig. 7, the three linear members are spaced apart to form a conical shape. Obviously, a reinforcement connecting two adjacent linear members may be further provided.
The carrier element is made of a conductive material and is preferably an inert material, wherein the inert material is inert to chemical reaction, such as a material that does not react with the electrochemical polishing solution. For example, one of the following materials may be selected: copper, lead, titanium, platinum, stainless steel alloys.
The utility model also provides a device is used in metal support electrochemical polishing.
Referring to fig. 1, the device comprises the clamp for the electrochemical polishing of the metal stent and further comprises a power rotating mechanism 5, wherein the power rotating mechanism 5 is provided with a clamping unit matched with the stent entrance end 1 of the bearing unit and used for clamping and rotating the clamp.
The power rotating mechanism 5 is provided with a rotor which can be driven by a power supply or other energy sources, and the rotor is in linkage connection with the clamping unit of the clamp so as to drive the clamping unit to rotate. The utility model discloses an anchor clamps can also include other parts, for example the linkage unit, and power rotary mechanism 5 can get into end 1 through the support of linkage unit and clamping unit and can dismantle the connection.
In the process of implementing electrochemical polishing, the bracket is carried by the clamp, the base is longitudinally placed in the electrolytic bath solution, and the clamp rotates under the action of the clamping unit.
A polishing process may be performed by starting the polishing operation when the holding unit is not rotating, and after a certain period of time, starting the power rotating mechanism, driving the holding unit to rotate for a certain period of time while maintaining the polishing, stopping the power rotating mechanism, and repeating this cycle.
The present invention has been described in detail, and the above embodiments are only used to help understanding the present invention, and it should be noted that, for those skilled in the art, the present invention can be modified without departing from the inventive concept, and the modifications also fall into the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a metal support is anchor clamps for electrochemical polishing which characterized in that: including electrically conductive load-bearing unit, load-bearing unit has support entering end and the backstop end that sets up respectively on the relative both ends, load-bearing unit is for bearing the weight of the section between support entering end and backstop end, bears the weight of the section and is used for bearing the metal support of treating the polishing that penetrates through support entering end, the backstop end is equipped with backstop structure, backstop structure is the continuous or discontinuous tubaeform periphery that one or more stop parts constitute for the support that stops to bear deviates from the backstop end, tubaeform periphery encircles the extension line that bears the length direction of segment.
2. The jig for electrochemical polishing as set forth in claim 1, wherein: the bearing section is used for bearing the metal bracket to be polished, which penetrates through the bracket entrance end, and at least part of the bearing section is in contact with the metal bracket to be polished.
3. The jig for electrochemical polishing as set forth in claim 1, wherein: the bearing unit is made of inert conductor materials.
4. The jig for electrochemical polishing as set forth in claim 3, wherein: the inert conductor material is selected from one of the following materials: copper, lead, titanium, platinum, stainless steel alloys.
5. The jig for electrochemical polishing as set forth in any one of claims 1 to 4, wherein: the stop structure is composed of a spiral linear component, the starting end of the stop structure is fixedly connected with the bearing section, and the stop structure diverges outwards along the length direction and extends spirally to the tail end of the bearing section.
6. The jig for electrochemical polishing as set forth in claim 5, wherein: the bearing unit is formed by winding a metal rod, one end of the metal rod is wound into a spiral shape to form the stop structure, and the other end of the metal rod is a support entering end.
7. The jig for electrochemical polishing as set forth in any one of claims 1 to 4, wherein: the stop structure is composed of at least three coplanar linear members, one ends of the at least three coplanar linear members are fixedly connected to the bearing section, and the at least three coplanar linear members form a discontinuous horn-shaped periphery on the coplanar surfaces.
8. The jig for electrochemical polishing as set forth in claim 5 or 7, wherein: the stop structure further comprises a reinforcement connecting different threadlike members or different portions of the same threadlike member on the flared periphery.
9. The jig for electrochemical polishing as set forth in claim 1, wherein: the bearing section is in a straight rod shape.
10. The utility model provides a metal support is device for electrochemical polishing which characterized in that: comprising a clamp according to any of claims 1-9, further comprising a powered swivel mechanism having a gripping unit adapted to mate with a rack access end of the load carrying unit for gripping and rotating the load carrying unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021030679.6U CN212426236U (en) | 2020-06-08 | 2020-06-08 | Clamp for metal support electrochemical polishing and device comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021030679.6U CN212426236U (en) | 2020-06-08 | 2020-06-08 | Clamp for metal support electrochemical polishing and device comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212426236U true CN212426236U (en) | 2021-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021030679.6U Active CN212426236U (en) | 2020-06-08 | 2020-06-08 | Clamp for metal support electrochemical polishing and device comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212426236U (en) |
-
2020
- 2020-06-08 CN CN202021030679.6U patent/CN212426236U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518118 No.1, Guihua 5th Road, big industrial zone, Pingshan New District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Xinlitai Medical Equipment Co.,Ltd. Address before: 518118 No.1, Guihua 5th Road, big industrial zone, Pingshan New District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN SALUBRIS BIOMEDICAL ENGINEERING Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231123 Address after: No.16 Chunlin Street, Daxing Biomedical Industry Base, Zhongguancun Science and Technology Park, Daxing District, Beijing, 102629 Patentee after: YALUN BIOTECHNOLOGY (BEIJING) Co.,Ltd. Address before: 518118 No.1, Guihua 5th Road, big industrial zone, Pingshan New District, Shenzhen City, Guangdong Province Patentee before: Shenzhen Xinlitai Medical Equipment Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No.16 Chunlin Street, Daxing Biomedical Industry Base, Zhongguancun Science and Technology Park, Daxing District, Beijing, 102629 Patentee after: Beijing Xinlitai Medical Equipment Co.,Ltd. Address before: No.16 Chunlin Street, Daxing Biomedical Industry Base, Zhongguancun Science and Technology Park, Daxing District, Beijing, 102629 Patentee before: YALUN BIOTECHNOLOGY (BEIJING) Co.,Ltd. |