CN113945505A - Medical material biodegradability test device - Google Patents
Medical material biodegradability test device Download PDFInfo
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- CN113945505A CN113945505A CN202010694515.1A CN202010694515A CN113945505A CN 113945505 A CN113945505 A CN 113945505A CN 202010694515 A CN202010694515 A CN 202010694515A CN 113945505 A CN113945505 A CN 113945505A
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- 239000012567 medical material Substances 0.000 title claims abstract description 18
- 231100000209 biodegradability test Toxicity 0.000 title description 2
- 238000012360 testing method Methods 0.000 claims abstract description 141
- 239000007788 liquid Substances 0.000 claims abstract description 81
- 238000009434 installation Methods 0.000 claims abstract description 29
- 238000011084 recovery Methods 0.000 claims abstract description 15
- 238000006065 biodegradation reaction Methods 0.000 claims abstract description 6
- 238000004064 recycling Methods 0.000 claims description 11
- 238000005485 electric heating Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims 1
- 238000001802 infusion Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- 230000015556 catabolic process Effects 0.000 description 12
- 238000006731 degradation reaction Methods 0.000 description 12
- 239000000463 material Substances 0.000 description 12
- 238000005260 corrosion Methods 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 8
- 239000012535 impurity Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000001914 filtration Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000006872 improvement Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 239000007779 soft material Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/03—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements self-supporting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/002—Test chambers
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Environmental Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Ecology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Environmental & Geological Engineering (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention discloses a medical material biodegradation performance testing device, which comprises a test groove, a liquid storage tank, a constant temperature tank and a recovery tank, wherein an opening is formed in the top of the test groove, a cover body is arranged at the opening in an openable, closable and sealed mode, a driving motor is fixedly arranged at the top of the cover body, the output end of the driving motor penetrates through the cover body and is connected with the top of an installation table in the test groove, a plurality of fixing installation parts used for fixing a test sample are arranged at the bottom of the installation table, a liquid inlet is formed in the lower portion of the side wall of the test groove, a liquid outlet is formed in the upper portion of the other side wall of the test groove, the liquid inlet is communicated with the liquid storage tank positioned on the outer side of the test groove through a liquid inlet pipe, the liquid storage tank is positioned in the constant temperature tank, the liquid outlet is communicated with the top of the recovery tank through a liquid outlet pipe, and the bottom of the recovery tank is communicated with the liquid storage tank through a circulating pipe. The test device can simulate the relative motion state between a test medium and a test sample in a service state, can also firmly fix the test sample, and ensures the accuracy of a test result.
Description
Technical Field
The invention relates to the technical field of material performance testing equipment, in particular to a device for testing the biodegradability of a medical material.
Background
The relative motion between the material serving in liquid environment, such as medical material implanted in human body, and the medium has very important influence on the corrosion degradation behavior. Studies have shown that this relative motion can change not only the rate of corrosive degradation of the material/instrument, but also its type of corrosive degradation and its mechanism. Therefore, the simulation of the actual service condition, particularly the relative motion between the environmental medium and the material/apparatus, has important significance for revealing the actual law of the medium degradation erosion and the material/apparatus corrosion degradation behavior, developing new materials/new apparatuses and degradation control technology thereof and the like.
The existing medical material biodegradation performance tests are static simulation test experiments, namely, a test sample is fixed on a supporting object in test equipment in a suspension type mode through soft materials such as wires or lines, the test sample is completely immersed in a test medium for a specific time, then the test sample is taken out, and the test sample is cleaned, dried, weighed, subjected to surface/section analysis test and the like, so that the information of corrosion degradation of the test sample can be obtained. The above method, although simple and easy, has the following disadvantages: (1) in the whole testing process, the testing medium in the testing equipment is in a static state, and the influence of the relative motion of the testing medium and the material on the corrosion degradation performance of the material is ignored; (2) because the test sample is hung in a suspension mode by adopting a soft material, the test sample is easy to shake under the influence of self gravity and the flow velocity of the test medium, and the test result is influenced.
Disclosure of Invention
In order to solve the problems in the background art, the invention provides a medical material biodegradation performance testing device, which can simulate the relative motion state between a testing medium and a test sample in a service state, can also firmly fix the test sample, and ensures the accuracy of a testing result.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a medical material biodegradation performance testing device, which comprises a testing groove, a liquid inlet, a liquid outlet, a liquid storage tank, a constant temperature tank and a recycling tank, wherein an opening is formed in the top of the testing groove, a cover body can be opened, closed and sealed at the opening, a driving motor is fixedly arranged on the top of the cover body, the output end of the driving motor penetrates through the cover body to be connected with the top of an installation table in the testing groove, a plurality of fixed installation parts for fixing a test sample are arranged at the bottom of the installation table, the liquid inlet is formed in the lower part of the side wall of the testing groove, the liquid outlet is formed in the upper part of the testing groove opposite to the other side wall, the liquid inlet is communicated with the liquid storage tank positioned outside the testing groove through a liquid inlet pipe, the liquid storage tank is positioned in the constant temperature tank, and the liquid outlet is communicated with the top of the recycling tank through a liquid outlet pipe, the bottom of the recovery tank is communicated with the liquid storage tank through a circulating pipe, a first liquid pump and a flowmeter are arranged on the liquid outlet pipe, and a second liquid pump is arranged on the circulating pipe;
the fixed mounting part comprises a fixed rod, a connecting plate and a mounting rod, the fixed rod is detachably connected to the bottom of the mounting table, the fixed rod is far away from one end of the mounting table and is connected with the connecting plate, a plurality of mounting rods are fixedly arranged at the bottom of the connecting plate, and external threads used for being in threaded connection with mounting holes formed in the surface of a test sample are arranged on the outer side of one end of the mounting rod.
The improved recycling tank is characterized in that a plurality of filter plates are arranged in the recycling tank from top to bottom in an inclined mode, a plurality of filter holes are evenly formed in the filter plates, grooves which are sunken downwards are formed in the positions, close to the bottoms, of the filter plates, a drain outlet is formed in the side wall of the recycling tank and is communicated with the grooves, and a control valve is installed on the drain outlet. Can cross the impurity filtration that dissolves in the test medium through the filter to realize the recycling of test medium, the impurity of crossing the filtration slides in to the recess of bottom along the filter of slope in, avoids impurity to block up the filtration pore of crossing on the filter, can regularly discharge the impurity in the recess through the drain.
In a further improvement, the inclination angle of the filter plate is 20-40 degrees.
The further improvement is that the mounting rod and the fixed rod are both cylindrical structures, and the axes of the output ends of the mounting rod, the fixed rod and the driving motor are parallel and coplanar. Through setting up, guaranteed the stability of test sample after the installation.
The improved structure is characterized in that the mounting table is a circular truncated cone, a plurality of loading ends are fixedly mounted at the bottom of the mounting table, the number and the positions of the loading ends correspond to those of the fixing rods one by one respectively, a mounting groove is formed in the bottom of the loading end, and internal threads matched with external threads on the outer side of the upper end of the fixing rod are arranged in the mounting groove. Through setting up, realized the dead lever and the loading of mount table bottom hold can dismantle and be connected, can choose different fixed mounting spare for use according to actual concrete need and carry out the free assembly to the realization is fixed to the loading of different test sample, improves the commonality of device.
The improved structure is characterized in that the liquid storage tank is of a cylindrical structure, the inner cavity of the thermostatic bath is of a cylindrical structure, and electric heating pipes are uniformly distributed at the bottom and on the side wall of the inner cavity of the thermostatic bath. Through setting up, the thermostatic bath can carry out more accurate temperature control to test medium in the reservoir for the temperature that enters into the test medium that tests in the groove is more accurate.
The further improvement is that the top of the liquid storage tank is provided with a liquid supplementing port. The test medium can be replenished at any time to counteract the loss of the test medium in the test slot.
In a further improvement, the side walls of the test groove are of a transparent structure, and the front face of the test groove is marked with height scale marks. The liquid level of the testing medium in the test groove can be conveniently adjusted according to the installation position of the test sample, and the whole process of corrosion degradation of the test sample can be conveniently tracked and observed in real time.
Compared with the prior art, the invention has the following beneficial effects:
(1) the driving motor is arranged on the cover body at the top of the test groove and drives the mounting table to rotate so as to drive the fixed mounting piece at the bottom of the mounting table to rotate, so that a test sample arranged on the fixed mounting piece is driven to rotate, the rotating motion of the test sample in a test medium is realized, meanwhile, the test medium in the test groove can enter the recovery groove through the liquid outlet pipe, after being filtered by the recovery groove, the test medium enters the liquid storage tank to be subjected to temperature regulation and control, and then flows into the test groove through the liquid inlet pipe, so that the stable and controlled flow of the test medium in the test groove is realized, and the influence of the relative motion of the test medium and a material on the corrosion degradation performance of the material can be conveniently and accurately evaluated;
(2) the test sample is fixed from the upper end of the test sample at multiple points by fixing the fixing rod, the connecting plate and the mounting rod in the mounting part, and the test sample can be in threaded connection with the bottom of the mounting rod through the mounting hole formed in the surface, so that the assembling and disassembling processes are convenient and quick;
(3) the utility model discloses a test device, including mount table, installation platform, test table, can dismantle bottom and be connected with a plurality of fixed mounting spare, realized once only loading and the test to a plurality of experimental samples, improve test work efficiency, can choose different fixed mounting spare to carry out the free matched stack simultaneously according to actual concrete need to the realization is fixed to the loading of different experimental samples, improves the commonality of device.
Drawings
The invention is described in further detail below with reference to specific embodiments and with reference to the following drawings.
FIG. 1 is a schematic view of the overall structure of a device for testing biodegradability of medical materials according to the present invention;
FIG. 2 is a schematic view of the structure of the reservoir of the present invention;
FIG. 3 is a schematic view of the internal configuration of a test slot according to the present invention;
FIG. 4 is a schematic view of the structure at the bottom of the mounting table in the present invention;
FIG. 5 is a schematic view of the fixed mounting member of the present invention;
FIG. 6 is a schematic view showing the internal structure of a recovery tank according to the present invention;
wherein the specific reference numerals are as follows: the test device comprises a test slot 1, a cover body 2, a driving motor 3, an installation platform 4, a loading end 5, an installation groove 6, a fixed mounting part 7, a fixing rod 8, a connecting plate 9, an installation rod 10, a liquid inlet pipe 11, a second flowmeter 12, a liquid storage tank 13, a thermostatic bath 14, an electric heating pipe 15, a liquid outlet pipe 16, a first liquid pump 17, a first flowmeter 18, a recovery tank 19, a filter plate 20, a groove 21, a sewage discharge port 22, a circulating pipe 23 and a second liquid pump 24.
Detailed Description
The embodiment of the invention discloses a medical material biodegradation performance testing device, as shown in figures 1 to 3, which comprises a test groove 1, a liquid inlet, a liquid outlet, a liquid storage tank 13, a constant temperature groove 14 and a recovery groove 19, wherein the top of the test groove 1 is provided with an opening, a cover body 2 is arranged at the opening in an openable and closable and sealed manner, the top of the cover body 2 is fixedly provided with a driving motor 3, the output end of the driving motor 3 penetrates through the cover body 2 to be connected with the top of an installation platform 4 in the test groove 1, the bottom of the installation platform 4 is provided with a plurality of fixed installation parts 7 for fixing a test sample, the lower part of the side wall of the test groove 1 is provided with the liquid inlet, the upper part of the other side wall of the test groove 1 is provided with the liquid outlet, the liquid inlet is communicated with the liquid storage tank 13 positioned outside the test groove 1 through a liquid inlet pipe 11, the liquid storage tank 13 is positioned in the constant temperature groove 14, and the liquid outlet is communicated with the top of the recovery groove 19 through a liquid outlet pipe 16, the bottom of the recycling tank 19 is communicated with the liquid storage tank 13 through a circulating pipe 23, a first liquid pump 17 and a first flowmeter 18 are arranged on the liquid outlet pipe 16, a second liquid pump 24 is arranged on the circulating pipe 23, the height of the liquid storage tank 13 in the vertical direction is higher than that of the test groove 1, a test medium in the liquid storage tank 13 flows into the test groove 1 through the liquid inlet pipe 11 under the action of gravity, and the second flowmeter 12 is arranged on the liquid inlet pipe 11. The driving motor 3 is installed on the cover body 2 at the top of the test slot 1, the driving motor 3 drives the installation platform 4 to rotate, and further drives the fixed installation part 7 at the bottom of the installation platform 4 to perform rotary motion, so that the test sample installed on the fixed installation part 7 is driven to rotate, the rotary motion of the test sample in the test medium is realized, meanwhile, the test medium in the test slot 1 can enter the recovery tank 19 through the liquid outlet pipe 16, after being filtered by the recovery tank 19, the test medium enters the liquid storage tank 13 to perform temperature regulation and control, and then flows into the test slot 1 through the liquid inlet pipe 11, so that the stable and controlled flow of the test medium in the test slot 1 is realized, and the influence of the relative motion of the medium and the material on the corrosion degradation performance of the material can be conveniently and accurately evaluated; 4 bottoms of mount table can be dismantled and be connected with a plurality of fixed mounting pieces 7, have realized once only loading and test to a plurality of experimental samples, improve test work efficiency, can choose different fixed mounting pieces 7 for use simultaneously according to actual concrete need to carry out free assembly to the realization is fixed to the loading of different experimental samples, improves the commonality of device.
Wherein, as shown in fig. 4 and 5, fixed mounting part 7 includes dead lever 8, connecting plate 9 and installation pole 10, dead lever 8 demountable connection is in mount table 4 bottom, dead lever 8 keeps away from 4 one end of mount table and is connected with connecting plate 9, the fixed a plurality of installation poles 10 that are equipped with in 9 bottoms of connecting plate, the outside that installation pole 10 kept away from 9 one end of connecting plate is equipped with and is used for carrying out threaded connection with the mounting hole that experimental sample seted up on the surface external screw thread, through dead lever 8 in fixed mounting part 7, connecting plate 9 and installation pole 10, it is fixed to have realized carrying out the multiple spot with experimental sample from its upper end, and experimental sample can with installation pole 10 bottom threaded connection through the mounting hole that the surface was seted up, the process of assembling and tearing down is convenient quick. Mount table 4 is the round platform, 4 bottom fixed mounting of mount table have a plurality of ends 5 that load, the quantity and the position of loading end 5 and the quantity and the position of dead lever 8 respectively one-to-one, loading end 5 bottom has seted up mounting groove 6, be equipped with in the mounting groove 6 with the external screw thread matched with internal thread in the dead lever 8 upper end outside, through setting up, the dead lever 8 has been realized and the loading of 4 bottoms of mount table is held 5 can dismantle and is connected, can choose for use different fixed mounting spare 7 to carry out free matched stack according to actual concrete needs, in order to realize fixed to the loading of different test sample, the commonality of improving the device.
Wherein, as shown in fig. 6, a plurality of filter plates 20 are obliquely arranged in the recycling tank 19 from top to bottom, the inclination angle of the filter plates 20 is 20-40 degrees, a plurality of filter holes are uniformly arranged on the filter plates 20, a groove 21 which is concave downwards is arranged on the filter plates 20 close to the bottom, a drain 22 is communicated and arranged on the sidewall of the recycling tank 19 close to the groove 21, a control valve is arranged on the drain 22, three filter plates 20 are arranged in the embodiment, the aperture of the filter holes on the three filter plates 20 is sequentially reduced from top to bottom, can filter out the impurity that dissolves in the test medium through filter 20 to realize the used in cycles of test medium, the impurity of filtering is followed the filter 20 of slope and is slided in to the recess 21 of bottom, avoids impurity to block up the filtration pore on the filter 20, can regularly discharge the impurity in the recess 21 through drain 22.
The mounting rod 10 and the fixing rod 8 are both cylindrical structures, and the axes of the output ends of the mounting rod 10, the fixing rod 8 and the driving motor 3 are parallel to each other and coplanar. Through setting up, guaranteed the stability of test sample after the installation.
The liquid storage tank 13 is of a cylindrical structure, the inner cavity of the thermostatic bath 14 is of a cylindrical structure, and electric heating pipes 15 are uniformly distributed on the bottom and the side wall of the inner cavity of the thermostatic bath 14. Through setting up, the thermostatic bath 14 can carry out more accurate temperature control to the test medium in the reservoir 13 for the temperature of the test medium that enters into in the test groove 1 is more accurate.
Wherein, the top of the liquid storage tank 13 is provided with a liquid supplementing port. The test medium can be replenished at any time to counteract losses of the test medium in the test slot 1.
Wherein, the lateral wall of the testing groove 1 is of a transparent structure, and the front face of the testing groove 1 is marked with height scale marks. The liquid level of the testing medium in the test groove 1 can be conveniently adjusted according to the installation position of the test sample, and the whole process of corrosion degradation of the test sample can be conveniently tracked and observed in real time.
The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.
Claims (8)
1. A medical material biodegradation performance testing device is characterized by comprising a test groove, a liquid inlet, a liquid outlet, a liquid storage tank, a constant temperature tank and a recovery tank, wherein an opening is formed in the top of the test groove, a cover body can be arranged at the opening in an opening-closing and sealing manner, a driving motor is fixedly arranged at the top of the cover body, the output end of the driving motor penetrates through the cover body to be connected with the top of an installation table in the test groove, a plurality of fixed installation parts for fixing a test sample are arranged at the bottom of the installation table, the liquid inlet is formed in the lower part of the side wall of the test groove, the liquid outlet is formed in the upper part of the test groove, which is opposite to the other side wall, the liquid inlet is communicated with the liquid storage tank positioned outside the test groove through a liquid inlet pipe, the liquid storage tank is positioned in the constant temperature tank, and the liquid outlet is communicated with the top of the recovery tank through a liquid outlet pipe, the bottom of the recovery tank is communicated with the liquid storage tank through a circulating pipe, a first liquid pump and a flowmeter are arranged on the liquid outlet pipe, and a second liquid pump is arranged on the circulating pipe;
the fixed mounting part comprises a fixed rod, a connecting plate and a mounting rod, the fixed rod is detachably connected to the bottom of the mounting table, the fixed rod is far away from one end of the mounting table and is connected with the connecting plate, a plurality of mounting rods are fixedly arranged at the bottom of the connecting plate, and external threads used for being in threaded connection with mounting holes formed in the surface of a test sample are arranged on the outer side of one end of the mounting rod.
2. The device for testing the biodegradability of a medical material according to claim 1, wherein a plurality of filter plates are obliquely arranged in the recycling tank from top to bottom, a plurality of filter holes are uniformly formed in the filter plates, a groove which is concave downwards is formed in the filter plates close to the bottom, a drain outlet is communicated with the side wall of the recycling tank close to the groove, and a control valve is installed on the drain outlet.
3. The device for testing biodegradability of medical material according to claim 2, wherein the inclination angle of the filter plate is 20-40 degrees.
4. The device for testing biodegradability of medical materials according to claim 1, wherein the mounting rod and the fixing rod are both cylindrical structures, and axes of the output ends of the mounting rod, the fixing rod and the driving motor are parallel and coplanar with each other.
5. The medical material biodegradability testing device of claim 1, wherein the mounting platform is a circular truncated cone, a plurality of loading ends are fixedly mounted at the bottom of the mounting platform, the number and positions of the loading ends correspond to those of the fixing rods one by one, a mounting groove is formed at the bottom of the loading ends, and internal threads matched with external threads on the outer side of the upper end of the fixing rod are arranged in the mounting groove.
6. The device for testing the biodegradability of a medical material according to claim 1, wherein the liquid storage tank is of a cylindrical structure, the inner cavity of the thermostatic bath is of a cylindrical structure, and electric heating pipes are uniformly distributed on the bottom and the side wall of the inner cavity of the thermostatic bath.
7. The device for testing the biodegradability of medical materials according to claim 1, wherein the top of the liquid storage tank is provided with a fluid infusion port.
8. The device for testing the biodegradability of medical materials of claim 1, wherein the side walls of the test slot are transparent, and the front face of the test slot is marked with height scale marks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010694515.1A CN113945505A (en) | 2020-07-17 | 2020-07-17 | Medical material biodegradability test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010694515.1A CN113945505A (en) | 2020-07-17 | 2020-07-17 | Medical material biodegradability test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113945505A true CN113945505A (en) | 2022-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010694515.1A Pending CN113945505A (en) | 2020-07-17 | 2020-07-17 | Medical material biodegradability test device |
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| CN (1) | CN113945505A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116297142A (en) * | 2023-04-17 | 2023-06-23 | 斯伯特新材料科技(德州)有限公司 | Environmental simulation testing device for new material metal material |
-
2020
- 2020-07-17 CN CN202010694515.1A patent/CN113945505A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116297142A (en) * | 2023-04-17 | 2023-06-23 | 斯伯特新材料科技(德州)有限公司 | Environmental simulation testing device for new material metal material |
| CN116297142B (en) * | 2023-04-17 | 2023-12-26 | 重庆华司特检测技术有限公司 | Environmental simulation testing device for new material metal material |
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Application publication date: 20220118 |