CN112873418A - Novel 3D printing equipment for cutting soft tissue - Google Patents
Novel 3D printing equipment for cutting soft tissue Download PDFInfo
- Publication number
- CN112873418A CN112873418A CN202110006185.7A CN202110006185A CN112873418A CN 112873418 A CN112873418 A CN 112873418A CN 202110006185 A CN202110006185 A CN 202110006185A CN 112873418 A CN112873418 A CN 112873418A
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- blade
- soft tissue
- novel
- bolt
- printing device
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- 238000005520 cutting process Methods 0.000 title claims abstract description 39
- 210000004872 soft tissue Anatomy 0.000 title claims abstract description 32
- 238000010146 3D printing Methods 0.000 title claims abstract description 28
- 230000001681 protective effect Effects 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 description 9
- 210000001519 tissue Anatomy 0.000 description 8
- 239000000463 material Substances 0.000 description 5
- 238000009864 tensile test Methods 0.000 description 5
- 238000009826 distribution Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 238000012856 packing Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000000281 joint capsule Anatomy 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 210000002808 connective tissue Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 210000000981 epithelium Anatomy 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000003041 ligament Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 206010033675 panniculitis Diseases 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 210000003491 skin Anatomy 0.000 description 1
- 210000004304 subcutaneous tissue Anatomy 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
- B26F1/44—Cutters therefor; Dies therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y80/00—Products made by additive manufacturing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
- B26F1/44—Cutters therefor; Dies therefor
- B26F2001/4463—Methods and devices for rule setting, fixation, preparing cutting dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
- B26F1/44—Cutters therefor; Dies therefor
- B26F2001/4472—Cutting edge section features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
- B26F1/44—Cutters therefor; Dies therefor
- B26F2001/4481—Cutters therefor; Dies therefor having special lateral or edge outlines or special surface shapes, e.g. apertures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
- G01N2001/2873—Cutting or cleaving
Abstract
The invention relates to the technical field of cutting instruments and discloses novel 3D printing equipment for cutting soft tissues, which comprises a razor blade part, wherein a blade mold is arranged at the lower part of the razor blade part, clamping pieces are arranged at two sides of the blade mold, a bolt penetrates through the centers of the clamping pieces and the blade mold, a washer and a butterfly nut are arranged at one side of each clamping piece and fixed at the head end of the bolt, and a protective cover is arranged at the upper part of a razor blade. Through assembling each part that obtains with the 3D printing method, the razor blade is pressed and is bent into the barbell form between clamping piece and blade mould, and the bolt of screwing and butterfly nut are fixed each part, installs the visor additional above the assembly, and this structure has solved the problem that current novel equipment for cutting the soft tissue makes time long, the price is expensive and cutting sample accuracy is low.
Description
Technical Field
The invention relates to the technical field of cutting instruments, in particular to novel 3D printing equipment for cutting soft tissues.
Background
Soft tissue refers to skin, subcutaneous tissue, muscle, tendon, ligament, joint capsule, synovial capsule, nerve, blood vessel, etc. of living beings, and is an important biological tissue. The destructive behavior and mechanical properties of soft tissue can be characterized by uniaxial tensile tests on small cross-section specimens, which are also the basic experiments for characterizing the mechanical properties of soft biological tissue. The data from the tensile test was used to quantify the material strength of connective and epithelial tissues and to determine the effect of microstructure, disease and treatment on tissue function. To ensure the effectiveness and repeatability of the tensile test, the specimens must be designed with the appropriate geometry within the specified tolerances. International test standards for many conventional materials (ASTM, 2003) require the use of dumbbell-shaped test specimens to promote failure in areas of uniform tensile stress. By distributing the pressure required to firmly grip the sample, the dumbbell shape reduces the risk of grip or "premature" failure of the grip, in which case the stress state is more complex than simple stretching. The ideal specimen geometry for tensile testing is dumbbell-shaped (dog-bone shaped), although dumbbell-shaped specimens have been used by many research groups for tensile testing of soft tissues, there is no standardized method for cutting these specimens.
The most common method of cutting soft tissue is to use a scalpel and a cutting guide or a custom made steel punch. While the use of a scalpel with a cutting guide can provide an inexpensive, low maintenance method that can be performed quickly, the final specimen geometry is operator dependent and is prone to large dimensional variations between and within specimens. In contrast, custom steel punches can provide repeatable and accurate specimen geometries, but they are expensive, require significant manufacturing time, and require regular maintenance to sharpen cutting blades, preventing their widespread use in biomechanical studies, and to address this problem we propose a new 3D printing device for cutting soft tissue.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides novel 3D printing equipment for cutting soft tissues, which has the advantages of quick manufacturing time, lower material cost, good precision, replaceable blades and sample size scaling for specific tissues and experiments, and solves the problems of long manufacturing time, high price and low sample cutting precision of the conventional novel equipment for cutting soft tissues.
(II) technical scheme
In order to achieve the above-mentioned objectives of fast manufacturing time, low material cost, good precision, replaceable blade and scaling of sample size for specific tissues and experiments, the present invention provides the following technical solutions: the utility model provides a novel 3D printing apparatus for cutting soft tissue, includes razor piece part, the lower part of razor piece part be provided with the blade mould, the clamping piece is installed in the both sides of blade mould, the clamping piece has run through the bolt with blade mould center, clamping piece one side is provided with the packing ring and the butterfly nut is fixed in the bolt head end, razor piece upper portion is provided with the visor.
Preferably, the razor blade parts are flexible single-edge razors, the number of the razor blade parts is two, the razor blade parts are parallel to each other, so that the clamping part and the blade die can smoothly press and bend the two blades into a barbell shape during assembly, and only one edge of the outer side is provided with a knife edge.
Preferably, the bottom of the blade mold is flat, the upper part of the blade mold is barbell-shaped, and the height of the upper part of the blade mold is smaller than that of the razor blade, so that the combined body can be stably placed, the razor blade can be pressed and bent into the barbell shape, and the upper part of the blade extends out of the combined body.
Preferably, the two clamping pieces are completely consistent, and the inner side shapes of the two clamping pieces are completely matched with the blade mold, so that the barbell-shaped razor blade can be obtained after the two clamping pieces are assembled, and the shapes of the two clamping pieces are not different.
Preferably, the centers of the blade die and the two clamping pieces are provided with round holes with consistent heights, so that bolts can smoothly penetrate through the round holes, and all parts are fixed during assembly.
Preferably, the diameter of the bolt is smaller than the diameter of the central circular holes of the blade die and the two clamping pieces, and the length of the bolt is larger than the combined width of the blade die and the two clamping pieces, so that the head end of the bolt is ensured to extend out of the combined body after penetrating through the combined body, and a space is created for installing the washer and the butterfly nut.
Preferably, the diameter of the central round hole of the washer is larger than that of the bolt, so that the washer can be smoothly installed on the bolt and plays a role in assembly.
Preferably, the butterfly nut is in a double-wing shape, the diameter of the central circular hole and the threads are completely matched with the bolt, so that smooth installation on the bolt is guaranteed, and the butterfly nut can be further fixed by the protective cover.
Preferably, the shape of the lower part of the protective cover is completely matched with the shape of the upper part of the lower combination body, so that the protective cover can be accurately installed on the combination body and can fix the butterfly nut.
Preferably, the blade mold, the clamping piece and the protective cover are all manufactured in a 3D printing mode, so that the manufacturing time of the equipment is short, and the cost is low.
(III) advantageous effects
Compared with the prior art, the invention provides novel 3D printing equipment for cutting soft tissues, which has the following beneficial effects:
1. this a novel 3D printing apparatus for cutting soft tissue, assemble through each part that obtains 3D printing method, two razor blades are pressed and are bent into the barbell form between clamping piece and blade mould, the bolt of screwing and butterfly nut are fixed with each part, the visor is installed as the fastening appurtenance of fixed butterfly nut additional in the assembly top, fix bolt assembly once more with the hexagonal spanner simultaneously, the problem that current novel equipment manufacturing time is long, the price is expensive and cutting sample accuracy is low for cutting the soft tissue has been solved to this structure.
2. This novel 3D printing apparatus for cutting soft tissue assembles each part through bolt and wing nut, selects the size of packing ring and the thickness of bolt to exert the volume stress distribution, this volume stress distribution can use single bolt reliably to bend the blade and obtain barbell-shaped razor blade, utilizes the visor to further fix in place simultaneously. In order to cut the dumbbell-shaped biological soft tissue sample, a layer of thin paper is placed on a plastic base plate, a protective cover is taken down, a barbell-shaped razor blade is placed on the thin paper, and a mallet is used for knocking the top of the cutting equipment, so that the advantages of replaceable blades and adjustment of the sample size according to requirements are realized, and the cost of the cutting equipment is further reduced.
Drawings
FIG. 1 is a disassembled view of the components of the present invention before they are assembled;
FIG. 2 is an overall view of the assembled invention;
FIG. 3 is an assembled pictorial view of the present invention;
in the figure: 1 razor blade part, 2 blade die, 3 clamp, 4 bolt, 5 washer, 6 wing nut, 7 protective cap.
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. 1-2, a novel 3D printing device for cutting soft tissue includes a razor blade unit 1 characterized by: the razor blade component 1 is provided with a blade mold 2 at the lower part, clamping pieces 3 are arranged at two sides of the blade mold 2, so that the clamping pieces and the blade mold can smoothly press and bend two blades into a barbell shape during assembly, a knife edge is arranged at one side of the outer side, a bolt 4 penetrates through the centers of the clamping pieces 3 and the blade mold 2, a washer 5 and a butterfly nut 6 are arranged at one side of each clamping piece 3 and fixed at the head end of the bolt 4, and a protective cover 7 is arranged at the upper part of the razor blade and used as a fastening auxiliary tool for fixing the butterfly nut. The blade mold 2, the clamping piece 3 and the protective cover 7 are all manufactured in a 3D printing mode, so that the advantages of short manufacturing time and low cost of the equipment are guaranteed.
The working principle is as follows: this novel 3D printing apparatus for cutting soft tissue, assemble through each part that obtains with the 3D printing mode, two razor blades 1 are pressed and are bent into the barbell-shaped between clamping piece and blade mould, screw bolt 4 and butterfly nut 6 and fix each part, select the size of packing ring 5 and the thickness of bolt 4, in order to exert the volume stress distribution, this volume stress distribution can use single bolt reliably to bend the blade and obtain the razor blade 1 of barbell-shaped, install visor 7 additional above the assembly as the fastening appurtenance of fixed butterfly nut 6, fix bolt 4 subassembly once more with the hexagon spanner simultaneously. In order to cut a dumbbell-shaped biological soft tissue sample, a layer of tissue paper is placed on a plastic base plate, the protective cover 7 is removed, the barbell-shaped razor blade 1 is placed on the tissue paper, and the top of the cutting device is knocked by a mallet, so that the structure solves the problems that the existing novel device for cutting soft tissue is long in manufacturing time, expensive and low in accuracy of cut sample.
As shown in fig. 3: the two blades 1 are smoothly pressed and bent into a barbell shape through the clamping piece 3 and the blade die 2, a knife edge is arranged on one side of the outer side, meanwhile, the bolts 4 and the butterfly nuts 6 are screwed to fix all the parts, the assembly is well assembled, and the sample has the best average size precision due to the lower neck curvature and the tight razor gap, so that the advantages of quick manufacturing time, lower material cost, good precision, replaceable blades and sample size scaling for specific tissues and experiments are realized.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A new 3D printing device for cutting soft tissue, comprising a razor blade part (1), characterized in that: the razor blade component is characterized in that a blade mold (2) is arranged at the lower part of the razor blade component (1), clamping pieces (3) are arranged at two sides of the blade mold (2), a bolt (4) penetrates through the centers of the clamping pieces (3) and the blade mold (2), a washer (5) and a butterfly nut (6) are arranged at one side of each clamping piece (3) and fixed at the head end of the bolt (4), and a protective cover (7) is arranged at the upper part of the razor blade.
2. The novel 3D printing device for cutting soft tissue as claimed in claim 1, wherein: the razor blade parts (1) are flexible single-edge razors, the number of the razor blade parts is two, and the razor blade parts are parallel to each other.
3. The novel 3D printing device for cutting soft tissue as claimed in claim 1, wherein: the bottom of the blade die (2) is flat, the upper part of the blade die is barbell-shaped, and the height of the upper part of the blade die is smaller than that of the razor blade (1).
4. The novel 3D printing device for cutting soft tissue as claimed in claim 1, wherein: the two clamping pieces (3) are completely consistent, and the inner side shapes of the two clamping pieces are completely matched with the blade die (2).
5. The novel 3D printing device for cutting soft tissue as claimed in claim 1, wherein: the centers of the blade die (2) and the two clamping pieces (3) are provided with round holes, and the heights of the round holes are consistent.
6. The novel 3D printing device for cutting soft tissue as claimed in claim 1, wherein: the diameter of the bolt (4) is smaller than the diameter of the central circular holes of the blade die (2) and the two clamping pieces (3), and the length of the bolt is larger than the combined width of the blade die (2) and the two clamping pieces (3).
7. The novel 3D printing device for cutting soft tissue as claimed in claim 1, wherein: the diameter of the central round hole of the washer (5) is larger than that of the bolt (4).
8. The novel 3D printing device for cutting soft tissue as claimed in claim 1, wherein: the butterfly nut (6) is in a double-wing shape, and the diameter and the threads of the central circular hole are completely matched with those of the bolt (4).
9. The novel 3D printing device for cutting soft tissue as claimed in claim 1, wherein: the shape of the lower part of the protective cover (7) is completely matched with the shape of the upper part of the lower assembly.
10. The novel 3D printing device for cutting soft tissue as claimed in claim 1, wherein: the blade die (2), the clamping piece (3) and the protective cover (7) are all manufactured in a 3D printing mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110006185.7A CN112873418A (en) | 2021-01-05 | 2021-01-05 | Novel 3D printing equipment for cutting soft tissue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110006185.7A CN112873418A (en) | 2021-01-05 | 2021-01-05 | Novel 3D printing equipment for cutting soft tissue |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112873418A true CN112873418A (en) | 2021-06-01 |
Family
ID=76046751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110006185.7A Pending CN112873418A (en) | 2021-01-05 | 2021-01-05 | Novel 3D printing equipment for cutting soft tissue |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112873418A (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB379392A (en) * | 1930-05-24 | 1932-09-01 | Thomas Harry Frost | Improvements in or relating to fine edged blades and method of making the same |
| GB444581A (en) * | 1933-09-22 | 1936-03-23 | United Shoe Machinery Corp | Improvements in or relating to cutting dies |
| GB601261A (en) * | 1944-05-16 | 1948-05-03 | Mano Emanuel Becker | Improvements in or relating to multiple bladed knives |
| US3698028A (en) * | 1970-06-04 | 1972-10-17 | Wolverine World Wide Inc | Vision effective cutting and marking die |
| US20040003502A1 (en) * | 2000-03-28 | 2004-01-08 | Giorgio Giordana | Portable cutting device with a height adjustable cutting tool for making cuts parallel to a reference plane |
| KR200408000Y1 (en) * | 2005-08-26 | 2006-02-07 | 박선후 | Wood mold for Punching forming groove |
| CN201446574U (en) * | 2009-07-28 | 2010-05-05 | 珠海元盛电子科技股份有限公司 | Steel cutter die for manufacturing bonding layer |
| KR20100112272A (en) * | 2009-04-09 | 2010-10-19 | 주식회사 케이디에스인텍 | Wood mold of which auxiliary support for fixing jig is mounted on side of cutter blade |
| DE102009024061A1 (en) * | 2009-06-05 | 2010-12-09 | CBS Präzisionswerkzeuge GmbH | Machine reamer has tool holder and cutting block arranged on tool holder, where cutting block is movable in radial direction to rotation axis of tool holder |
| CN102886832A (en) * | 2012-09-27 | 2013-01-23 | 常州华阳光伏检测技术有限公司 | Slice cutting knife mould |
| CN103659327A (en) * | 2013-11-29 | 2014-03-26 | 成都斯锐特钨钢刀具有限公司 | Clamping device for special-shaped cutters |
| CN105936055A (en) * | 2016-06-06 | 2016-09-14 | 徐利 | Earthworm slaughter machine |
| CN208902443U (en) * | 2018-09-07 | 2019-05-24 | 广西医科大学第一附属医院 | Rat brain slice tool |
| CN111319097A (en) * | 2018-12-13 | 2020-06-23 | 住友化学株式会社 | Punching tool and punching method |
| CN211927313U (en) * | 2020-04-09 | 2020-11-13 | 刘媛媛 | Trunk sampling device for tree pest investigation |
-
2021
- 2021-01-05 CN CN202110006185.7A patent/CN112873418A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB379392A (en) * | 1930-05-24 | 1932-09-01 | Thomas Harry Frost | Improvements in or relating to fine edged blades and method of making the same |
| GB444581A (en) * | 1933-09-22 | 1936-03-23 | United Shoe Machinery Corp | Improvements in or relating to cutting dies |
| GB601261A (en) * | 1944-05-16 | 1948-05-03 | Mano Emanuel Becker | Improvements in or relating to multiple bladed knives |
| US3698028A (en) * | 1970-06-04 | 1972-10-17 | Wolverine World Wide Inc | Vision effective cutting and marking die |
| US20040003502A1 (en) * | 2000-03-28 | 2004-01-08 | Giorgio Giordana | Portable cutting device with a height adjustable cutting tool for making cuts parallel to a reference plane |
| KR200408000Y1 (en) * | 2005-08-26 | 2006-02-07 | 박선후 | Wood mold for Punching forming groove |
| KR20100112272A (en) * | 2009-04-09 | 2010-10-19 | 주식회사 케이디에스인텍 | Wood mold of which auxiliary support for fixing jig is mounted on side of cutter blade |
| DE102009024061A1 (en) * | 2009-06-05 | 2010-12-09 | CBS Präzisionswerkzeuge GmbH | Machine reamer has tool holder and cutting block arranged on tool holder, where cutting block is movable in radial direction to rotation axis of tool holder |
| CN201446574U (en) * | 2009-07-28 | 2010-05-05 | 珠海元盛电子科技股份有限公司 | Steel cutter die for manufacturing bonding layer |
| CN102886832A (en) * | 2012-09-27 | 2013-01-23 | 常州华阳光伏检测技术有限公司 | Slice cutting knife mould |
| CN103659327A (en) * | 2013-11-29 | 2014-03-26 | 成都斯锐特钨钢刀具有限公司 | Clamping device for special-shaped cutters |
| CN105936055A (en) * | 2016-06-06 | 2016-09-14 | 徐利 | Earthworm slaughter machine |
| CN208902443U (en) * | 2018-09-07 | 2019-05-24 | 广西医科大学第一附属医院 | Rat brain slice tool |
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| CN211927313U (en) * | 2020-04-09 | 2020-11-13 | 刘媛媛 | Trunk sampling device for tree pest investigation |
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