CN113465982A - Real-time sterile external tumor mass sampling device for tumor surgery pathological research - Google Patents
Real-time sterile external tumor mass sampling device for tumor surgery pathological research Download PDFInfo
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- CN113465982A CN113465982A CN202110746672.7A CN202110746672A CN113465982A CN 113465982 A CN113465982 A CN 113465982A CN 202110746672 A CN202110746672 A CN 202110746672A CN 113465982 A CN113465982 A CN 113465982A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/08—Radiation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
- A61L2202/20—Targets to be treated
- A61L2202/24—Medical instruments, e.g. endoscopes, catheters, sharps
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
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Abstract
The invention discloses an in-vitro tumor mass sampling device for tumor surgery pathological research, which is disinfected in real time, and comprises a positioning cover for limiting a tumor mass, a disinfection mechanism in the positioning cover and a puncture cylinder, wherein the puncture cylinder is nested above the positioning cover and used for inserting the tumor mass, a supporting plate is fixed on the outer side of the puncture cylinder, the supporting plate is connected with the positioning cover through a first reset spring, and the upper end and the lower end of the first reset spring are respectively fixedly connected with the supporting plate and the positioning cover to provide resilience for the puncture cylinder. This external tumor piece sampling equipment is used in tumour surgery pathological research of real time disinfection is provided with a puncture section of thick bamboo and location cover, can fix a position the tumor piece through the location cover, presses a puncture section of thick bamboo and makes it insert the tumor piece in, and the cooperation sample connection can realize the drawing to the tumor piece sample, and convenient to use is swift, and can cooperate the disinfection fluorescent tube to shine the disinfection, convenient subsequent use to the surface of a location cover and a puncture section of thick bamboo after using.
Description
Technical Field
The invention relates to the technical field of tumor mass sampling, in particular to an in-vitro tumor mass sampling device for tumor surgical pathological research and capable of disinfecting in real time.
Background
In the tumor treatment research, the excised tumor can be sampled in vitro by the sampling device so as to carry out subsequent research and analysis, but the existing sampling device has some defects in use:
a detect sampling device for breast tumour as publication No. CN109946107A discloses, electric putter is under the connection of connecting plate, drive the downstream of cutting knife, make the cutting knife do the cutting operation to the tumour piece of placing the board, the convenience when utilizing sampling device to take a sample to tumour tissue has been improved, but the device's inside power equipment sets up more, lead to the whole quality of device also can increase thereupon, and be not convenient for protect the sample when using, sampling mechanism can receive great pollution when follow-up reuse, influence follow-up testing result to different samples, and the disinfection is comparatively loaded down with trivial details after using.
Aiming at the problems, innovative design is urgently needed on the basis of the original tumor mass sampling equipment.
Disclosure of Invention
The invention aims to provide in-vitro tumor mass sampling equipment for tumor surgery pathological research, which is disinfected in real time, and solves the problems that the existing tumor mass sampling equipment in the market at present is inconvenient to protect a sampled product during use, a sampling mechanism is greatly polluted during subsequent reuse, the subsequent detection results of different samples are influenced, and the disinfection is complicated after use.
In order to achieve the purpose, the invention provides the following technical scheme: an external tumor sampling device for tumor surgery pathological research with real-time disinfection comprises a positioning cover for limiting tumor, a disinfection mechanism and a puncture cylinder in the positioning cover, wherein the puncture cylinder is nested above the positioning cover and used for inserting tumor, a supporting disc is fixed on the outer side of the puncture cylinder and connected with the positioning cover through a first reset spring, the upper end and the lower end of the first reset spring are respectively fixedly connected with the supporting disc and the positioning cover to provide resilience force for the puncture cylinder, an arc-shaped sample collecting plate is arranged in the puncture cylinder, a base is movably connected below the sample collecting plate, a sample collecting bin is formed between the base and the sample collecting plate, a fixing plate is arranged above the base and connected with the sample collecting plate through a movable connecting mechanism with a shielding function, so that the sample collecting plate is still connected with the fixing plate after moving, the utility model discloses a puncture outfit, including a puncture section of thick bamboo, sample collection board, guide block, first spread groove, second spread groove, guide block and fixed plate, the surface mosaic of sample collection board has the guide block, and the outside of guide block is provided with first spread groove, and first spread groove is connected through guide groove and second spread groove, and just first spread groove, guide groove and second spread groove are all seted up in the inside of a puncture section of thick bamboo, first spread groove and second spread groove are vertical form setting, the guide groove is the level form setting, fixes a position for the mounted position of sample collection board, the inside of fixed plate is provided with can be to the fixed locking mechanical system of end part of sample collection board.
Further optimize this technical scheme, the below of location cover is fixed with flexible connection cover, and flexible connection cover constitutes for the rubber material, makes the height of location cover carry out the adjustment of certain extent, increases its application scope.
Further optimize this technical scheme, disinfection mechanism is for installing the inside disinfection fluorescent tube of position cover, disinfects the surface of a position cover and a puncture section of thick bamboo through shining, conveniently shines the disinfection to the position cover after the use and a puncture section of thick bamboo.
Further optimize this technical scheme, the tip of sample collection board is most advanced form setting, and the arc length between sample collection board and the fixed plate equals with the arc length of sample connection, and follow-up sample can enter into the inside of sample collection board through the sample connection, and follow-up most advanced convenience through the sample collection board cuts off the sample and collects.
Further optimize this technical scheme, the lower extreme of sample collection board is fixed with the location end, and the sample collection board carries out the rotatory removal of horizontal direction through the location end on the base, the upper end of sample collection board is fixed with the rotatory operation handle of control sample collection board, can drive the sample collection board through the operation and rotate, controls the position of sample collection board.
Further optimize this technical scheme, the surface mosaic of fixed plate has the locating piece, and the locating piece passes through to constitute between constant head tank and the puncture section of thick bamboo and slides the structure from top to bottom, fixes the mounted position of fixed plate.
Further optimize this technical scheme, the top of first spread groove and second spread groove is opening column structural design, the installation of the guide block of being convenient for, all constitute sliding connection between guide block and first spread groove, second spread groove and the guide way, fix a position the installation of sample collection board, guarantee follow-up mounted position's accuracy.
Further optimizing the technical scheme, the movable connecting mechanism consists of a winding shaft, a torsion spring and a shielding belt;
the winding shaft is rotatably arranged in the fixed plate through a torsion spring;
the shielding belt is wound on the surface of the winding shaft, the outer end of the shielding belt is fixed at the end part of the sample collecting plate, and the shielding belt can be driven to unreel on the winding shaft when the sample collecting plate moves.
Further optimizing the technical scheme, the locking mechanism comprises a butt joint groove, a clamping groove, a limiting block and a second return spring;
the butt joint groove is formed on the surface of the fixing plate and connected with the end of the sample collecting plate;
the clamping groove is formed in the surface of the sample collecting plate and clamped with the limiting block;
the stopper is installed in the inside of fixed plate through second reset spring, and the right side of stopper is the slope form setting, and the sample collection board is fixed it with being connected of butt joint groove back accessible stopper and draw-in groove.
Compared with the prior art, the invention has the beneficial effects that: the in vitro tumor mass sampling device for the tumor surgery pathological research of real-time disinfection;
the tumor mass sampling device is provided with the puncture cylinder and the positioning cover, the tumor mass can be positioned through the positioning cover, the puncture cylinder is pressed to be inserted into the tumor mass, the tumor mass sampling device can be used for extracting a tumor mass sample in cooperation with the sampling port, the use is convenient and rapid, and the puncture cylinder can be used for irradiating and disinfecting the outer surfaces of the positioning cover and the puncture cylinder in cooperation with the disinfection lamp tube after being used, so that the subsequent use is facilitated;
the movable sample collecting plate is arranged, the sample collecting bin is formed by the sample collecting plate, the base, the fixing plate, the locking mechanism and the movable connecting mechanism, the sample bin can be installed in the puncture cylinder for use, and next sampling can be carried out by pulling out and replacing the sample bin after use, so that the sample can be effectively protected, the inner wall of the puncture cylinder is not polluted, and the practicability of the device is improved;
be provided with the locking mechanical system fixed to the sample collecting plate, can fix the sample collecting plate in the fixed plate through locking mechanical system, make it form closed space on the base, accomplish the extraction to the sample, and the sample collecting plate can cut off the tumor piece when removing, makes the sample take in the inboard of sample collecting plate smoothly, makes the follow-up good stability that keeps of sample collecting plate.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic view of the main section structure of the present invention;
FIG. 3 is a schematic top view of a sample collection plate according to the present invention;
FIG. 4 is a schematic view of a puncture cartridge in a top-down configuration in accordance with the present invention;
FIG. 5 is a schematic view of the sample collection plate of the present invention;
FIG. 6 is an enlarged view of a portion a of FIG. 5 according to the present invention;
FIG. 7 is a schematic view of a main sectional structure of the wind-up shaft of the present invention.
In the figure: 1. a positioning cover; 101. a flexible connection cover; 2. a puncture cylinder; 3. a support disc; 4. a first return spring; 5. sterilizing the lamp tube; 6. a sampling port; 7. a sample collection plate; 701. a positioning end; 8. an operating handle; 9. a base; 10. a fixing plate; 11. positioning blocks; 12. a guide block; 13. positioning a groove; 14. a first connecting groove; 15. a guide groove; 16. a second connecting groove; 17. a butt joint groove; 18. a card slot; 19. a limiting block; 20. a second return spring; 21. a winding shaft; 22. a torsion spring; 23. a masking tape.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-7, the present invention provides a technical solution: an external tumor sampling device for tumor surgery pathological research with real-time disinfection comprises a positioning cover 1 for limiting tumor, a disinfection mechanism in the positioning cover 1 and a puncture cylinder 2, wherein the puncture cylinder 2 is nested above the positioning cover 1 and is used for inserting tumor, a supporting plate 3 is fixed on the outer side of the puncture cylinder 2, the supporting plate 3 is connected with the positioning cover 1 through a first reset spring 4, the upper end and the lower end of the first reset spring 4 are respectively fixedly connected with the supporting plate 3 and the positioning cover 1 and provide resilience for the puncture cylinder 2, an arc-shaped sample collecting plate 7 is arranged in the puncture cylinder 2, a base 9 is movably connected below the sample collecting plate 7, a sample collecting bin is formed between the base 9 and the sample collecting plate 7, a fixing plate 10 is arranged above the base 9, and the fixing plate 10 is connected with the sample collecting plate 7 through a movable connecting mechanism with a shielding function, the sample collection plate 7 is still connected with the fixing plate 10 after moving, a guide block 12 is embedded on the surface of the sample collection plate 7, a first connecting groove 14 is formed in the outer side of the guide block 12, the first connecting groove 14 is connected with a second connecting groove 16 through a guide groove 15, the first connecting groove 14, the guide groove 15 and the second connecting groove 16 are all arranged inside the puncture cylinder 2, the first connecting groove 14 and the second connecting groove 16 are vertically arranged, the guide groove 15 is horizontally arranged and used for positioning the installation position of the sample collection plate 7, and a locking mechanism capable of fixing the end part of the sample collection plate 7 is arranged inside the fixing plate 10;
a flexible connecting cover 101 is fixed below the positioning cover 1, the flexible connecting cover 101 is made of rubber materials, the disinfecting mechanism is a disinfecting lamp tube 5 arranged inside the positioning cover 1, and the outer surfaces of the positioning cover 1 and the puncture cylinder 2 are disinfected through irradiation;
the flexible connecting cover 101 can be adapted to tumor masses with different heights and sizes through deformation, meanwhile, the lower end of the positioning cover 1 is kept in better fit with the contact surface, the sample collecting plate 7 can be pressed to drive the puncture cylinder 2 to move during use, and the disinfection lamp tube 5 can irradiate and disinfect the inside of the positioning cover 1 and the outer surface of the puncture cylinder 2, so that subsequent use is facilitated;
the end part of the sample collecting plate 7 is arranged in a tip shape, the arc length between the sample collecting plate 7 and the fixing plate 10 is equal to the arc length of the sampling opening 6, a subsequent sample can enter the sample collecting plate 7 through the sampling opening 6, the lower end of the sample collecting plate 7 is fixed with a positioning end 701, the sample collecting plate 7 rotates on the base 9 in the horizontal direction through the positioning end 701, the upper end of the sample collecting plate 7 is fixed with an operating handle 8 for controlling the sample collecting plate 7 to rotate, the surface of the fixing plate 10 is inlaid with a positioning block 11, and the positioning block 11 forms an up-and-down sliding structure through a positioning groove 13 and the puncture cylinder 2, the installation position of the fixing plate 10 is fixed, the upper parts of the first connecting groove 14 and the second connecting groove 16 are both in an open structural design, so that the guide block 12 is convenient to install, and the guide block 12, the first connecting groove 14, the second connecting groove 16 and the guide groove 15 are in sliding connection;
after the puncture cylinder 2 is inserted into the tumor block, the tumor block can enter the inner side of the sample collecting plate 7 through the sampling port 6, a piston negative pressure suction mechanism can also be arranged in the sample collecting plate 7 to assist the entry of the sample, then the sample collecting plate 7 can be rotated 8 to move through operation, the sample entering the puncture cylinder 2 is cut off, and after the cut-off, the sample collecting plate 7 is taken out of the puncture cylinder 2, thus completing the collection of the sample;
the movable connecting mechanism consists of a winding shaft 21, a torsion spring 22 and a shielding belt 23;
wherein, the winding shaft 21 is rotatably installed inside the fixing plate 10 through a torsion spring 22;
the shielding belt 23 is wound on the surface of the winding shaft 21, and the outer end of the shielding belt 23 is fixed at the end part of the sample collecting plate 7;
the locking mechanism comprises a butt joint groove 17, a clamping groove 18, a limiting block 19 and a second return spring 20;
a butt joint groove 17 which is arranged on the surface of the fixing plate 10 and is connected with the end of the sample collecting plate 7;
the clamping groove 18 is formed in the surface of the sample collecting plate 7 and clamped with the limiting block 19;
a limiting block 19 installed inside the fixing plate 10 through a second return spring 20, and the right side of the limiting block 19 is disposed in an inclined manner;
when the sample collecting plate 7 moves, the shielding belt 23 is pulled to move, the shielding belt 23 is unreeled on the reeling shaft 21, the distance between the sample collecting plate 7 and the fixing plate 10 is shielded and supplemented, when the sample collecting plate 7 is inserted into the butt joint groove 17, the limiting block 19 is extruded, the limiting block 19 is contracted, when the positions of the limiting block 19 and the clamping groove 18 are coincided, the limiting block 19 stretches out under the action of the second reset spring 20 and is connected with the clamping groove 18, and the sample collecting plate 7 is fixed.
The working principle is as follows: when using the in vitro tumor mass sampling device for tumor surgical pathology research sterilized in real time, according to the illustrations of fig. 1-7, the tumor mass is placed inside the positioning cap 1, then press puncture section of thick bamboo 2 through sample collection board 7, make it pierce to the tumor in, the sample passes through the top that sample connection 6 got into base 9, also can set up the entering of negative pressure suction means auxiliary sample in the top of base 9, rotatory sample collection board 7 after the sample gets into, cut off the sample that gets into, preserve the inboard of sample collection board 7 with it, puncture section of thick bamboo 2 accessible reset spring 4 rebound upwards resets after the sample is accomplished, extract sample collection board 7 from puncture section of thick bamboo 2 upwards and accomplish the collection of sample, follow-up will be new by sample collection board 7, base 9, fixed plate 10, the sample storehouse that locking mechanical system and swing joint mechanism constitute is inserted puncture section of thick bamboo 2 and can carry out the sample of next time.
Those not described in detail in this specification are within the skill of the art.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (9)
1. The utility model provides a real-time sterile tumour surgery external tumor mass sampling device for pathology research which characterized in that: comprises a positioning cover (1) for limiting a tumor block, a disinfection mechanism in the positioning cover (1) and a puncture cylinder (2), wherein the puncture cylinder (2) is nested above the positioning cover (1) and is used for inserting the tumor block, a supporting disc (3) is fixed on the outer side of the puncture cylinder (2), the supporting disc (3) is connected with the positioning cover (1) through a first reset spring (4), the upper end and the lower end of the first reset spring (4) are respectively fixedly connected with the supporting disc (3) and the positioning cover (1) to provide resilience force for the puncture cylinder (2), an arc-shaped sample collecting plate (7) is arranged in the puncture cylinder (2), a base (9) is movably connected below the sample collecting plate (7), a sample collecting bin is formed between the base (9) and the sample collecting plate (7), a fixing plate (10) is arranged above the base (9), the fixed plate (10) is connected with the sample collecting plate (7) through a movable connecting mechanism with a shielding function, so that the sample collecting plate (7) is still connected with the fixed plate (10) after moving, a guide block (12) is embedded on the surface of the sample collecting plate (7), and the outer side of the guide block (12) is provided with a first connecting groove (14), the first connecting groove (14) is connected with a second connecting groove (16) through a guide groove (15), and the first connecting groove (14), the guide groove (15) and the second connecting groove (16) are all arranged in the puncture cylinder (2), the first connecting groove (14) and the second connecting groove (16) are vertically arranged, the guide groove (15) is arranged horizontally and used for positioning the installation position of the sample collecting plate (7), the fixing plate (10) is internally provided with a locking mechanism which can fix the end part of the sample collecting plate (7).
2. The real-time sterilization external tumor mass sampling device for tumor surgical pathology research according to claim 1, characterized in that: a flexible connecting cover (101) is fixed below the positioning cover (1), and the flexible connecting cover (101) is made of rubber.
3. A real-time sterile in-vitro tumor mass sampling device for the surgical pathology study of tumors according to claim 1 or 2, characterized in that: the disinfection mechanism is a disinfection lamp tube (5) arranged inside the positioning cover (1), and disinfects the outer surfaces of the positioning cover (1) and the puncture cylinder (2) through irradiation.
4. The real-time sterilization external tumor mass sampling device for tumor surgical pathology research according to claim 1, characterized in that: the tip of sample collection board (7) is most advanced form setting, and the arc length between sample collection board (7) and fixed plate (10) equals with the arc length of sample connection (6), and follow-up sample can enter into the inside of sample collection board (7) through sample connection (6).
5. The real-time sterilization external tumor mass sampling device for tumor surgical pathology research according to claim 1 or 4, characterized in that: the lower end of the sample collecting plate (7) is fixed with a positioning end (701), the sample collecting plate (7) rotates on a base (9) in the horizontal direction through the positioning end (701), and the upper end of the sample collecting plate (7) is fixed with an operating handle (8) for controlling the sample collecting plate (7) to rotate.
6. The real-time sterilization external tumor mass sampling device for tumor surgical pathology research according to claim 1, characterized in that: the surface of the fixing plate (10) is inlaid with a positioning block (11), and the positioning block (11) forms an up-and-down sliding structure through a positioning groove (13) and the puncture cylinder (2) to fix the installation position of the fixing plate (10).
7. The real-time sterilization external tumor mass sampling device for tumor surgical pathology research according to claim 1, characterized in that: the top of first connecting groove (14) and second connecting groove (16) is opening form structural design, the installation of guide block (12) of being convenient for, all constitute sliding connection between guide block (12) and first connecting groove (14), second connecting groove (16) and the guide way (15).
8. The real-time sterilization external tumor mass sampling device for tumor surgical pathology research according to claim 1, characterized in that: the movable connecting mechanism consists of a winding shaft (21), a torsion spring (22) and a shielding belt (23);
a winding shaft (21) rotatably mounted inside the fixing plate (10) through a torsion spring (22);
and the shielding belt (23) is wound on the surface of the winding shaft (21), and the outer end of the shielding belt (23) is fixed at the end part of the sample collecting plate (7).
9. The real-time sterilization external tumor mass sampling device for tumor surgical pathology research according to claim 1, characterized in that: the locking mechanism comprises a butt joint groove (17), a clamping groove (18), a limiting block (19) and a second return spring (20);
the butt joint groove (17) is formed on the surface of the fixing plate (10) and connected with the end of the sample collecting plate (7);
the clamping groove (18) is formed in the surface of the sample collecting plate (7) and is clamped with the limiting block (19);
and the limiting block (19) is arranged in the fixing plate (10) through a second return spring (20), and the right side of the limiting block (19) is obliquely arranged.
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| CN210981865U (en) * | 2019-11-25 | 2020-07-10 | 南京林业大学 | Soil eluviation appearance collection system is used to charcoal |
| CN211583277U (en) * | 2020-02-24 | 2020-09-29 | 张立一 | Clinical biopsy sampling device of gastroenterology |
| CN212140486U (en) * | 2020-03-03 | 2020-12-15 | 深圳市康尔诺生物技术有限公司 | Tumor sampler |
| CN212295389U (en) * | 2020-07-14 | 2021-01-05 | 贵州民族大学 | Canopy based on twisted spiral yarns |
| CN213345753U (en) * | 2020-07-30 | 2021-06-04 | 黄利敏 | Clinical biopsy sampling device that uses of medical oncology |
| CN213173508U (en) * | 2020-08-06 | 2021-05-11 | 郑德成 | Road surface cleaning device with quick replacement brush head structure |
| CN213540211U (en) * | 2020-10-15 | 2021-06-25 | 天津市龙瑞达机车车辆配件有限公司 | Harmonious semi-automatic sunshade curtain for locomotive |
| CN213552210U (en) * | 2020-10-22 | 2021-06-29 | 李鑫 | Puncture needle for nephrology department |
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