CN110923799A - Novel clamp for medical suture needle electrolysis and suture needle electrolysis method - Google Patents
Novel clamp for medical suture needle electrolysis and suture needle electrolysis method Download PDFInfo
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- CN110923799A CN110923799A CN201911369263.9A CN201911369263A CN110923799A CN 110923799 A CN110923799 A CN 110923799A CN 201911369263 A CN201911369263 A CN 201911369263A CN 110923799 A CN110923799 A CN 110923799A
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- 238000005868 electrolysis reaction Methods 0.000 title claims description 43
- 238000000034 method Methods 0.000 claims abstract description 19
- 230000005389 magnetism Effects 0.000 claims abstract description 10
- 238000005498 polishing Methods 0.000 claims description 22
- 239000003792 electrolyte Substances 0.000 claims description 14
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 9
- 239000010936 titanium Substances 0.000 claims description 9
- 229910052719 titanium Inorganic materials 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 239000010985 leather Substances 0.000 claims description 4
- 238000002791 soaking Methods 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 3
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 3
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 3
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 3
- 238000009958 sewing Methods 0.000 abstract description 11
- 238000012360 testing method Methods 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000002950 deficient Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000010963 304 stainless steel Substances 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F7/00—Constructional parts, or assemblies thereof, of cells for electrolytic removal of material from objects; Servicing or operating
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F3/00—Electrolytic etching or polishing
- C25F3/16—Polishing
Abstract
The invention relates to a novel clamp for electrolyzing a medical suture needle and a suture needle electrolyzing method, which are characterized in that: the connecting rod is included, one end of the connecting rod is provided with a fixing mechanism, the other end of the connecting rod is provided with a conductive hook, the fixing mechanism comprises a shell, strong magnetism is arranged inside the shell, the shell is fixedly connected onto the connecting rod through a connecting piece, and the two sides of the shell are provided with convex edges and corners. The invention reduces the step of manually clamping the suture needle, can clamp the suture needle with a very small diameter, solves the problem of very high needle falling rate of the traditional clamp during electrolyzing the suture needle with the small diameter, improves the electrolyzing efficiency and greatly improves the yield of the suture needle in the same time. In addition, the quality of the electrolyzed sewing needle is excellent, the electrolyzed sewing needle has a bright surface, uniform color and no speckles, and the needle tip and the needle tail do not have the phenomena frequently appearing in secondary products such as big headstock and the like.
Description
Technical Field
The invention relates to the field of production and manufacturing of medical suture needles, in particular to a novel clamp for electrolyzing a medical suture needle and a suture needle electrolyzing method.
Background
The medical suture needle is mainly used for surgical suture, is mostly made of stainless steel wires by drilling or slotting at the tail of the needle, and has smooth appearance after polishing and electrolytic treatment; the needle type is divided into round needle, angle needle, shovel needle, straight needle and the like according to actual needs, and the radian is divided into 1/2, 3/8 and the like according to the actual needs; the production process is very complicated, belongs to high-tech products, and even uses the laser drilling technology for fine drilling.
In the electrolytic treatment process, as shown in fig. 1, a conventional suture needle clamp has a plurality of rows of connecting rods at a soaking end, a clamp is arranged on each connecting rod, the suture needles are clamped in the clamps, then the clamp with the suture needles clamped therein is fixed on an electrolytic cell, and the soaking end is soaked in the electrolytic cell for electrolysis. However, the clip of this clip needs to insert the suture needle one by manually engaging the suture needle with two bent metal rods, and requires a diameter of the suture needle, and if the suture needle is too small in size, the suture needle is liable to fall. The traditional clamp is used, the manual needle feeding is time-consuming and labor-consuming, and the clamp can only be used for clamping the suture needle with a larger diameter.
Disclosure of Invention
In order to solve the technical problems, the invention adopts the following scheme:
a novel anchor clamps that is used for electrolysis of medical suture needle which characterized in that: the connecting rod is included, one end of the connecting rod is provided with a fixing mechanism, the other end of the connecting rod is provided with a conductive hook, the fixing mechanism comprises a shell, strong magnetism is arranged inside the shell, the shell is fixedly connected onto the connecting rod through a connecting piece, and the two sides of the shell are provided with convex edges and corners.
The novel clamp for electrolyzing the medical suture needle is characterized in that: the conductive hook is fixedly connected to the connecting rod through a fixing piece.
The novel clamp for electrolyzing the medical suture needle is characterized in that: the end part of the conductive hook is bent, the conductive hook is clamped on the electrolytic cell, and the conductive hook is connected with an external power supply through a lead.
The novel clamp for electrolyzing the medical suture needle is characterized in that: the strong magnetism is an electromagnet, and the strong magnetism attracts the suture needle under the control of the electromagnet.
The novel clamp for electrolyzing the medical suture needle is characterized in that: the sewing needle sets up on the casing, the sewing needle passes through strong magnetic card is in on the edges and corners, the angle of edges and corners is 60.
The novel clamp for electrolyzing the medical suture needle is characterized in that: the width of the strong magnet is 14cm, the height of the strong magnet is 3cm, and the length of the strong magnet is 145 cm;
the connecting rod is made of pure titanium materials, the fixing piece is made of pure titanium materials, the shell is made of pure titanium materials, and the connecting piece is made of pure titanium materials;
the conductive hook is a red copper conductive hook.
The suture needle electrolysis method using the novel clamp is characterized in that: the method comprises the following steps:
s1, before electrolysis, leading the electrolyte in an electrolytic cell to be electrified with direct current 1.5-2 hours in advance until the electrolyte is green;
s2, clamping the suture needle on the novel clamp, and immersing the novel clamp clamped with the suture needle into an electrolytic cell;
s3, fixedly arranging the novel clamp on an anode copper rod of an electrolytic cell, and washing the novel clamp with clear water after electrolyzing for a period of time;
s4, if the novel clamp is a common strong magnet, gently knocking off the suture needle after electrolytic treatment by using a leather roller, and if the novel clamp uses an electromagnet, disconnecting the current of the electromagnet and taking off the suture needle;
s5, soaking the taken-down suture needle in a soda solution with the concentration of 30g/L for a period of time, taking out the suture needle, and washing the suture needle with clean water.
The electrolysis method of the suture needle is characterized in that: the direct current in step S1 is 100-200A, the voltage is 5-15V, and the temperature is 60-90 ℃.
The electrolysis method of the suture needle is characterized in that: the electrolyte in step S1 includes 42 parts of concentrated phosphoric acid, 20 parts of concentrated sulfuric acid, 8 parts of polishing solution and 30 parts of old solution, wherein the polishing solution includes diamond polishing solution, silicon oxide polishing solution, cerium oxide polishing solution, aluminum oxide polishing solution and silicon carbide polishing solution, and the old solution is the electrolyte that has undergone at least one electrolysis operation.
The electrolysis method of the suture needle is characterized in that: in the electrolysis process of step S2, the electrolysis conditions are current 100-200A, voltage 5-15V and temperature 60-90 ℃.
The novel clamp for electrolyzing the medical suture needle and the suture needle electrolysis method have the following beneficial effects:
the step of manually clamping the suture needle is firstly reduced, the novel clamp can clamp the suture needle with a small diameter, the problem that the needle falling rate of the traditional clamp is high when the suture needle with the small diameter is electrolyzed is solved, the electrolysis efficiency is improved, the suture needle needs to be manually clamped by the traditional clamp, and the yield of the suture needle in the same time is greatly improved. In addition, the electrolyzed sewing needle has excellent quality, bright surface, uniform color and no spot mark. And the needle point is sharp and has no phenomena of white point, pockmark point, virtual point, hook head, flat head, big head, thin head and the like. The needle tail is smooth and has no joint mark, and has no phenomena of bending, tail breaking, tail wrapping, tail seating and the like.
Drawings
FIG. 1: the structure schematic diagram of the clamp for electrolyzing the traditional medical suture needle;
FIG. 2: the structure schematic diagram of the novel clamp for electrolyzing the medical suture needle is disclosed;
FIG. 3: the invention discloses a schematic view of a fixing mechanism of a novel clamp for electrolyzing a medical suture needle.
Description of reference numerals:
1, a conductive hook; 2, fixing a part; 3, connecting rods; 4, connecting pieces; 5, a shell; 6, strong magnetism; 7 a suture needle.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings, so that the technical solutions of the present invention can be understood and appreciated more easily.
As shown in FIG. 1, a conventional suture needle electrolysis jig is provided with a connecting frame, and a plurality of clips are provided at upper and lower ends of the frame. The clamp is two metal strips which are mutually attached, one end of each metal strip is fixed on the connecting frame, and the other end of each metal strip is bent outwards to form an arc-shaped inlet of the clamp. The suture needle is clamped on a clamp consisting of metal strips through an arc inlet. The other end of the connecting frame is provided with a conductive hook which is fixed on the connecting frame through a screw, and then the connecting frame which is fully clamped with the suture needle is immersed into an electrolytic cell for electrolysis.
Referring to fig. 2 and 3, a novel clamp for electrolyzing a medical suture needle comprises a connecting rod 3, wherein one end of the connecting rod 3 is provided with a fixing mechanism for clamping a suture needle 7 through a connecting piece 4, and the other end of the connecting rod is provided with a conductive hook 1. Wherein one end of the conductive hook 1 is bent, and the other end is fixedly connected on the connecting rod 3 through the fixing part 2. The fixing mechanism comprises a shell 5, and strong magnetism 6 is arranged inside the shell 5. The shell 5 is prism, wherein two sides are provided with convex edges to reduce the contact area between the sewing needle 7 and the shell 5 and improve the electrolysis effect. The conductive hook 1 is a red copper conductive hook, and the size of the strong magnet is 14cm in width, 3cm in height and 145cm in length.
A more preferable embodiment is that the strong magnet 6 is an electromagnet, the suture needle 7 is fixedly connected to edges and corners on two sides of the shell 5 under the action of magnetic force after the electromagnet is electrified, the suture needle 7 after the electrolysis step is separated from the novel fixture only by disconnecting the electromagnet after the electrolysis is finished, and the suture needle 7 after the electrolysis step is conveniently collected and packaged.
A more preferred embodiment is that the fixing member 2, the connecting rod 3, the connecting member 4 and the housing 5 are made of pure titanium, and have good corrosion resistance far exceeding that of the conventional 304 stainless steel.
An electrolytic method of suture needles comprising the steps of:
firstly, the direct current power supply is switched on by the electrolyte 1.5 to 2 hours in advance until the electrolyte is green. The suture needle 7 is clamped on a fixing mechanism of the novel clamp, the strong magnet 6 attracts the suture needle 7 to be tightly connected on the shell 5, and the contact points between the suture needle 7 and the shell 5 are only two end points or two end points of the suture needle 7 and the edge angle between the two end points and the shell 5. And (3) placing the clamp clamped with the suture needle 7 into an electrolytic cell, hanging the clamp on a copper rod of an anode of the electrolytic cell, removing the clamp from the electrolytic cell after electrolyzing for a period of time, and then washing the suture needle 7 by using clear water. The suture needle 7 is taken down, then the suture needle 7 is immersed in the soda solution, taken out after a period of time, and washed clean by clear water.
The electrolyte comprises 42 parts of concentrated phosphoric acid, 20 parts of concentrated sulfuric acid, 8 parts of polishing solution and 30 parts of old solution, wherein the polishing solution comprises diamond polishing solution, silicon oxide polishing solution, cerium oxide polishing solution, aluminum oxide polishing solution, silicon carbide polishing solution and the like, and the old solution is the electrolyte which is subjected to at least one electrolysis operation. The solubility of the soda solution is 30g/L, the current is 100-200A, the voltage is 5-15V, the temperature is 60-90 ℃, and the electrolysis time is shown in Table 1.
TABLE 1 suture needle Electrolysis time
The manner of removing the needle 7 will vary depending on the clamp selected. If the common strong magnet 6 is used, the leather roller is used for lightly knocking down the sewing needle 7, and the tail part of the sewing needle 7 needs to be noticed during knocking so as to prevent the tail part from being damaged after knocking. If the electromagnet is used, the current of the electromagnet is only needed to be cut off, the sewing needle 7 connected to the clamp automatically falls off, the leather roller is not needed to knock, and the defective rate is low.
By the electrolysis method, the electrolyzed suture needle has bright surface, uniform color and no spot mark. And the needle point is sharp and has no phenomena of white point, pockmark point, virtual point, hook head, flat head, big head, thin head and the like. The needle tail is smooth and has no joint mark, and has no phenomena of bending, tail breaking, tail wrapping, tail seating and the like.
The following tests were conducted on the conventional jig and the novel jig according to the above-described electrolytic method. Wherein, traditional anchor clamps experimental group marks as experimental group (one), and novel anchor clamps adopt ordinary strong magnetism mark as experimental group (two), and novel anchor clamps adopt strong magnetism mark as experimental group (three).
In the first test, after the clamps are clamped and fixed for 120 seconds, the number of the dropped sewing needles is measured, the needle dropping rate is calculated, and the test results are shown in the second table.
TABLE 2 needle dropping rate of clamps for clamping suture needles of different sizes
As can be seen from the data in Table 2, the novel clamp of the present invention has a slightly weaker attachment strength to a large diameter needle, but has a stronger attachment strength than the conventional clamp. For the suture needle with a small diameter, the novel clamp has good connection strength and extremely low needle dropping rate, and the traditional clamp can hardly clamp the suture needle with the small diameter.
And a second test is to test the quality of the suture needle after electrolysis by different clamps. Electrifying the electrolyte until the electrolyte is green, electrolyzing in an environment with the current of 100A, the voltage of 5V and the temperature of 60 ℃, putting the three groups of experimental groups into the same electrolytic cell for electrolyzing for 50s, and repeating for many times, wherein the test results are shown in Table 3.
TABLE 3 suture needle electrolytic failure rate
The experimental results shown in table 3 show that the conventional jig has a high surface mark rate and a high defective rate of the needle tail, while the novel jig using the common strong magnet has a slightly higher defective rate of the needle tip and the needle tail relative to the surface, and the novel jig using the electromagnet has a low defective rate of the needle tip and the needle tail relative to the surface.
And thirdly, testing the product quality of the suture needle electrolyzed by the novel clamp under different electrolysis conditions, wherein the test results are shown in the following table 4. The fixture of the practical experiment group two of this test is tested.
TABLE 4 good product rate of the novel clamp under different electrolysis conditions
| Test conditions | 100A，5V，30℃ | 150A，10V，45℃ | 200A，15V，60℃ | 90A，4V，45℃ | 150A，16V，25℃ | 210A，16V，75℃ |
| Yield of good products | 98.2％ | 98.7％ | 99％ | 86％ | 88％ | 75％ |
The test results in Table 4 show that the suture needle electrolysis method of the present invention has the highest yield under the conditions of the voltage range of 5-15V, the current range of 100-200A and the temperature range of 30-60 ℃.
According to the novel clamp for electrolyzing the medical suture needle and the suture needle electrolysis method, the step of manually clamping the suture needle is reduced, the novel clamp can be used for clamping the suture needle with a small diameter, the problem that the needle falling rate of the traditional clamp is high when the suture needle with the small diameter is electrolyzed is solved, the electrolysis efficiency is improved, the suture needle needs to be manually clamped by the traditional clamp, and the yield of the suture needle in the same time is greatly improved. In addition, the electrolyzed sewing needle has excellent quality, bright surface, uniform color and no spot mark. And the needle point is sharp and has no phenomena of white point, pockmark point, virtual point, hook head, flat head, big head, thin head and the like. The needle tail is smooth and has no joint mark, and has no phenomena of bending, tail breaking, tail wrapping, tail seating and the like.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The invention is described above with reference to the accompanying drawings, it is obvious that the implementation of the invention is not limited in the above manner, and it is within the scope of the invention to adopt various modifications of the inventive method concept and solution, or to apply the inventive concept and solution directly to other applications without modification.
Claims (10)
1. A novel anchor clamps that is used for electrolysis of medical suture needle which characterized in that: including connecting rod (3), the one end of connecting rod (3) is provided with fixed establishment, and the other end is provided with conductive hook (1), fixed establishment includes casing (5), and the inside of casing (5) is provided with strong magnetism (6), casing (5) are in through connecting piece (4) fixed connection on connecting rod (3), the both sides of casing (5) are provided with bellied edges and corners.
2. The novel clamp for electrolysis of medical suture needles according to claim 1, wherein: the conductive hook (1) is fixedly connected to the connecting rod (3) through a fixing piece (2).
3. The novel clamp for electrolysis of medical suture needles according to claim 1 or 2, characterized in that: the end part of the conductive hook (1) is bent, the conductive hook (1) is clamped on the electrolytic cell, and the conductive hook (1) is connected with an external power supply through a wire.
4. The novel clamp for electrolysis of medical suture needles according to claim 1 or 2, characterized in that: the strong magnet (6) is an electromagnet, and the strong magnet (6) is controlled by the electromagnet to attract the suture needle (7).
5. The novel clamp for electrolysis of medical suture needles according to claim 4, wherein: suture needle (7) set up on casing (5), suture needle (7) are passed through strong magnetism (6) joint is in on the edges and corners, the angle of edges and corners is 60.
6. The novel clamp for electrolysis of medical suture needles according to claim 1, wherein: the width of the strong magnet (6) is 14cm, the height of the strong magnet is 3cm, and the length of the strong magnet is 145 cm;
the connecting rod (3) is made of pure titanium, the fixing piece (2) is made of pure titanium, the shell (5) is made of pure titanium, and the connecting piece (4) is made of pure titanium;
the conductive hook (1) is a red copper conductive hook.
7. The suture needle electrolysis method using the novel clamp is characterized in that: the method comprises the following steps:
s1, before electrolysis, leading the electrolyte in an electrolytic cell to be electrified with direct current 1.5-2 hours in advance until the electrolyte is green;
s2, clamping the suture needle on the novel clamp, and immersing the novel clamp clamped with the suture needle into an electrolytic cell;
s3, fixedly arranging the novel clamp on an anode copper rod of an electrolytic cell, and washing the novel clamp with clear water after electrolyzing for a period of time;
s4, if the novel clamp is a common strong magnet, gently knocking off the suture needle after electrolytic treatment by using a leather roller, and if the novel clamp uses an electromagnet, disconnecting the current of the electromagnet and taking off the suture needle;
s5, soaking the taken-down suture needle in a soda solution with the concentration of 30g/L for a period of time, taking out the suture needle, and washing the suture needle with clean water.
8. The method of electrolyzing a suture needle according to claim 7, wherein: the direct current in step S1 is 100-200A, the voltage is 5-15V, and the temperature is 60-90 ℃.
9. The method of electrolyzing a suture needle according to claim 7, wherein: the electrolyte in step S1 includes 42 parts of concentrated phosphoric acid, 20 parts of concentrated sulfuric acid, 8 parts of polishing solution, and 30 parts of old solution, wherein the polishing solution includes diamond polishing solution, silicon oxide polishing solution, cerium oxide polishing solution, aluminum oxide polishing solution, and silicon carbide polishing solution, and the old solution is an electrolyte that has undergone at least one electrolysis operation.
10. The method of electrolyzing a suture needle according to claim 7, wherein: in the electrolysis process of step S2, the electrolysis conditions are current 100-200A, voltage 5-15V and temperature 60-90 ℃.
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| CN201911369263.9A CN110923799A (en) | 2019-12-26 | 2019-12-26 | Novel clamp for medical suture needle electrolysis and suture needle electrolysis method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911369263.9A CN110923799A (en) | 2019-12-26 | 2019-12-26 | Novel clamp for medical suture needle electrolysis and suture needle electrolysis method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113981520A (en) * | 2021-10-28 | 2022-01-28 | 浙江医药高等专科学校 | Novel clamp for electrolysis of medical suture needle |
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