CN111297364A - Measurer for measuring disease damage area of oral mucosa - Google Patents
Measurer for measuring disease damage area of oral mucosa Download PDFInfo
- Publication number
- CN111297364A CN111297364A CN202010169437.3A CN202010169437A CN111297364A CN 111297364 A CN111297364 A CN 111297364A CN 202010169437 A CN202010169437 A CN 202010169437A CN 111297364 A CN111297364 A CN 111297364A
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- Prior art keywords
- measuring
- handle
- oral mucosa
- measuring head
- lesion area
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 210000002200 mouth mucosa Anatomy 0.000 title claims abstract description 28
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 title description 3
- 201000010099 disease Diseases 0.000 title description 2
- 230000003902 lesion Effects 0.000 claims abstract description 40
- 239000008280 blood Substances 0.000 claims abstract description 7
- 210000004369 blood Anatomy 0.000 claims abstract description 7
- 230000028327 secretion Effects 0.000 claims abstract description 7
- 238000001574 biopsy Methods 0.000 claims description 20
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 239000003086 colorant Substances 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000005489 elastic deformation Effects 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 206010061218 Inflammation Diseases 0.000 abstract description 4
- 206010028980 Neoplasm Diseases 0.000 abstract description 4
- 208000025865 Ulcer Diseases 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 238000011156 evaluation Methods 0.000 abstract description 4
- 230000004054 inflammatory process Effects 0.000 abstract description 4
- 231100000397 ulcer Toxicity 0.000 abstract description 4
- 238000003748 differential diagnosis Methods 0.000 abstract description 3
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 abstract 1
- 238000010030 laminating Methods 0.000 abstract 1
- 239000012780 transparent material Substances 0.000 abstract 1
- 238000003745 diagnosis Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 208000007117 Oral Ulcer Diseases 0.000 description 2
- 208000002399 aphthous stomatitis Diseases 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000011179 visual inspection 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
- 241000872198 Serjania polyphylla Species 0.000 description 1
- 206010044546 Traumatic ulcer Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000002458 infectious effect Effects 0.000 description 1
- 230000002757 inflammatory effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Images
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/107—Measuring physical dimensions, e.g. size of the entire body or parts thereof
- A61B5/1077—Measuring of profiles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/107—Measuring physical dimensions, e.g. size of the entire body or parts thereof
- A61B5/1076—Measuring physical dimensions, e.g. size of the entire body or parts thereof for measuring dimensions inside body cavities, e.g. using catheters
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Physics & Mathematics (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The utility model provides a caliber for measuring oral mucosa lesion area, includes the discoid measuring head of making by transparent material and connects the handle in measuring head one side, is equipped with the scale mark that the concentric circles is constituteed on the measuring head upper surface, and the measuring head lower surface is smooth plane, and the laminating oppresses in oral mucosa lesion surface. According to the invention, the circular lesion areas such as oral mucosa ulcer, tubercle, tumor and the like can be simply, conveniently and accurately measured through the scale marks, and the medical record examination and the treatment effect evaluation are convenient. Meanwhile, the invention can press the plaque, the nodule or the tumor lesion surface of the oral mucosa, eliminate the background influence of blood and other secretions, and facilitate the differential diagnosis of inflammation or organic lesions.
Description
The technical field is as follows:
the invention relates to a medical measuring instrument, in particular to an oral medical measuring instrument.
Background art:
oral ulcer is a very common infectious, inflammatory or traumatic ulcer disease which occurs in oral mucosa, the appearance of the oral ulcer is single or multiple round or oval ulcer lesions with different sizes, and the area of the ulcer lesion needs to be determined by visual inspection in the process of diagnosis and treatment, so that medical record examination and treatment effect evaluation are performed. In addition, the white, black or red plaque, nodule or tumor lesion and the like of the oral mucosa which are common clinically are mostly circular or quasi-circular, and the area of the lesion needs to be determined by visual inspection in the diagnosis and treatment process, so that medical record examination and treatment effect evaluation are performed; the pressure diagnosis is also needed to eliminate the background influence of blood or secretion so as to recover the original appearance of the lesion and facilitate the differential diagnosis of inflammation or organic lesions, but the current visual diagnosis or pressure diagnosis lacks corresponding tools.
The invention content is as follows:
the invention provides a measurer for measuring the lesion area of oral mucosa, which is convenient for measuring the lesion area of the oral mucosa in the visual examination process and comprises a measuring head at least provided with a transparent measuring plane and a handle arranged on one side of the measuring head and in an oblique crossing state with the measuring plane; and the transparent measuring plane is provided with scale marks consisting of concentric circles.
Furthermore, the interval between the scale lines is 1mm, the scale lines with three times of intervals and the scale lines with every five times of intervals are thick scale lines, and the other scale lines are thin scale lines.
Furthermore, the interval between the scale lines is 1mm, each scale line is represented by different colors, the handle is provided with an indicating line which has the same color arrangement sequence with the scale lines, and scale values represented by corresponding colors are marked beside the indicating line.
Furthermore, the handle and the measuring plane are in an oblique crossing state of 20-40 degrees.
Furthermore, the lower surface of the measuring plane is a smooth plane and is used for fitting and pressing the lesion surface of the oral mucosa, eliminating the background influence of blood and secretion and showing the original appearance of the lesion surface.
Furthermore, the measurer is an assembly formed by connecting a measuring head and a handle into a whole; the measuring head is made of transparent plastic or glass, and the handle is made of plastic or stainless steel.
Furthermore, a first connecting part extends outwards from one side of the measuring head, and the first connecting part is provided with at least two first connecting holes; the handle comprises a handle part and a connecting part which forms an angle of 20-40 degrees with the handle part, the second connecting part is provided with a second connecting hole matched with the first connecting hole, the handle is sequentially connected with the first connecting hole and the second connecting hole in a penetrating manner through a bolt and is screwed on one side of the nut oblique crossing measuring head, and the lower end face of the bolt is positioned above the lower end face of the measuring plane.
Furthermore, the measuring head is circular, the handle comprises a handle part and a semicircular frame edge which is used for being inserted with the measuring head and forms an angle of 20-40 degrees with the handle part, an arc groove matched with the measuring diameter is formed in the inner arc side surface of the semicircular frame edge, the arc angle of the semicircular frame edge is not less than 180 degrees and not more than 185 degrees, the width of an insertion opening of the semicircular frame edge is smaller than the diameter of the measuring head, the widest part of the measuring head is inserted into the arc groove through the insertion opening of the semicircular frame through elastic deformation of the semicircular frame edge, and the measuring head is kept in the arc groove through the insertion opening smaller than the diameter of the measuring head.
Further, the measuring head and the handle are integral and made of transparent plastic.
Furthermore, a biopsy puncher is also arranged; handle tip center is equipped with the taper hole, and the one end of biopsy hole puncher is equipped with the circular blade that is used for the biopsy, one end be equipped with the frustum that the taper hole matches, the taper hole of biopsy hole puncher through frustum grafting handle tip can be dismantled and the tip of connection at the handle to carry out the biopsy through operating handle.
The invention can conveniently and accurately measure the lesion area of the oral mucosa through the scale marks, thereby facilitating the later treatment.
The invention can press the lesion surface of the oral mucosa by using the lower surface of the measuring head, eliminates the background influence of blood and other secretions, and is convenient to identify inflammation or tumor organic lesions.
Description of the drawings:
FIG. 1 is a schematic view of an embodiment of the present invention;
FIG. 2 is a schematic diagram of a measuring head according to an embodiment of the present invention;
FIG. 3 is a schematic view of a second embodiment of the present invention;
FIG. 4 is a partial cross-sectional view A-A of FIG. 3;
FIG. 5 is a third schematic view of the present invention;
FIG. 6 is a front view of FIG. 5;
FIG. 7 is a partial cross-sectional view B-B of FIG. 6;
FIG. 8 is a fourth schematic view of the present invention;
in the figure: 1-measuring head, 11-graduation line, 111-marking graduation line, 12-first connecting part, 13-first connecting hole, 14-first mounting part, 2-handle, 21-second connecting part, 22-second connecting hole, 23-second mounting part, 24-indicating line, 3-biopsy punch, 31-circular cutting edge and 32-frustum.
The specific implementation mode is as follows:
the first embodiment is as follows:
as shown in fig. 1 and fig. 2, the measuring device for measuring the lesion area of the oral mucosa according to the present embodiment is composed of a measuring head 1 made of PVC and a handle 2, the handle 2 is connected to one side of the measuring head 1, and the measuring head 1 is provided with ten scale marks 11 composed of concentric circles with a minimum interval of 1mm, which are sequentially 1-10mm scale marks from inside to outside. Because the sizes of the ulcers measured by the 3mm, 5mm and 10mm graduation lines in clinic are important, the 3mm, 5mm and 10mm graduation lines in the ten graduation lines 11 are used as marking graduation lines 111, and thicker graduation lines 11 are adopted for distinguishing, so that an operator can conveniently and accurately identify the size of the lesion area, and the medical record examination and the treatment effect evaluation are facilitated.
The lesion part of the oral mucosa is often accompanied by blood and other secretions, which can interfere the judgment of the lesion area, so that the lower surface of the measuring head 1 contacting the oral mucosa is set to be a smooth plane, which can be pressed against the lesion surface of the oral mucosa, eliminate the influence of the blood and other secretions, and show the original appearance of the lesion surface, thereby accurately identifying the size of the lesion area and simultaneously facilitating the differential diagnosis of inflammation or organic lesions.
In the using process, the condition that the size of the lesion area is inconvenient to read at an angle vertical to the scale mark 11 exists, and the mirror reflection reading can be carried out by means of a mouth mirror commonly used in oral diagnosis and treatment.
The measurer of the embodiment is a disposable medical instrument, is pre-sterilized, reduces the preparation work in the early stage, and is convenient for an operator to use.
Example two:
as shown in fig. 3 and 4, in this embodiment, based on the first embodiment, the measuring head 1 is made of glass, the handle 2 is made of 304 stainless steel, a first connecting portion 12 extends outwards from a side of the measuring head 1 connected to the handle, the first connecting portion 12 is provided with two first connecting holes 13, one end of the handle 2 is provided with a second connecting portion 21 in a bent shape, the second connecting portion 21 is provided with a second connecting hole 22 adapted to the first connecting hole 13, the handle 2 sequentially passes through the first and second connecting holes 13 and 22 through bolts and is screwed to one side of the measuring head, and a lower end face of each bolt is located above a lower end of the measuring plane in order that a smooth surface of the measuring head 1 can normally press a lesion.
The measuring head 1 is provided with ten scale marks 11 consisting of concentric circles with the minimum interval of 1mm, the scale marks 11 are sequentially 1-10mm from inside to outside, white, yellow, orange, cyan, red, brown, blue, green, purple and black are sequentially adopted, 3mm, 5mm and 10mm are used as mark scale marks 111, and orange, red and black with obvious chromatic aberration are adopted to facilitate the identification of an operator.
The handle 2 is sequentially provided with an indicating line 24 which is sequentially corresponding to the scale marks 11 in color and surrounds the handle 2, and scale values represented by corresponding colors are marked beside the indicating line 24.
The measurer of the embodiment can be sterilized and repeatedly used, so that the medical cost is saved, and the economic burden of a patient is reduced.
Example three:
as shown in fig. 5, 6, and 7, in this embodiment, on the basis of the first embodiment, a handle 2 made of stainless steel is connected to one side of a circular measuring head 1 made of glass, a first installation portion 14 protruding outward is disposed on a circumferential side surface of the measuring head 1, a second connection portion 21 bent in a curved shape is disposed at one end of the handle 2, a circular arc-shaped second installation portion 23 is disposed on the other side of the second connection portion 21, a radius of an inner ring of the second installation portion 23 is the same as a radius of the measuring head 1, an arc length of the inner ring of the second installation portion 23 is slightly larger than a semicircle of the circumference of the measuring head 1, the second installation portion 23 is provided with a recess matched with the first installation portion 14, and a lower.
When the glass measuring head 1 is mounted, the second mounting part 23 of the handle 2 is pulled outwards by using external force, the measuring head 1 is mounted in the second mounting part 23, and then the second mounting part 23 is released, so that the measuring head 1 is embedded in the second mounting part 23. Or the second mounting part 23 is heated to expand the second mounting part 23, and the measuring head 1 can be cooled by freezing and the like, so that the measuring head 1 can be conveniently mounted in the second mounting part 23, and after the normal temperature is recovered, the measuring head 1 is fixed on the handle 2 through the first mounting part 14 and the second mounting part 23.
The graduation lines 11 (including the marked graduation lines 111) and the indication lines 24 on the handle 2 in this embodiment are the same as those in the embodiment, and are not described again.
Example four:
as shown in fig. 8, in the present embodiment, in addition to the above-mentioned embodiments, the biopsy punch 3 is further provided at the end of the handle 2. The center of the end part of the handle 2 is provided with a taper hole, one end of the biopsy puncher 3 is provided with a circular cutting edge 31 for biopsy, and the other end of the biopsy puncher is provided with a frustum 32 matched with the taper hole. The biopsy puncher 3 is inserted into a taper hole at the end part of the handle 2 through the frustum 32, is detachably connected to the end part of the handle 2, and performs punching type biopsy through an operation handle. In the use process, the biopsy can be carried out by only installing the biopsy puncher 3 on the handle 2, and the biopsy punch is simple and convenient.
Claims (10)
1. A caliber for measuring the lesion area of the oral mucosa is characterized in that: comprises a measuring head at least provided with a transparent measuring plane and a handle which is arranged on one side of the measuring head and is in an oblique crossing state with the measuring plane; and the transparent measuring plane is provided with scale marks consisting of concentric circles.
2. The measuring instrument for measuring the lesion area of the oral mucosa according to claim 1, wherein: the interval between the scale lines is 1mm, the scale lines with three times of intervals and the scale lines with every five times of intervals are thick scale lines, and the other scale lines are thin scale lines.
3. The measuring instrument for measuring the lesion area of the oral mucosa according to claim 1, wherein: the interval between the scale lines is 1mm, each scale line is represented by different colors, the handle is provided with an indicating line which has the same color arrangement sequence with the scale lines, and scale values represented by corresponding colors are marked beside the indicating line.
4. The measuring instrument for measuring the lesion area of the oral mucosa according to claim 1, wherein: the handle and the measuring plane are in an oblique crossing state of 20-40 degrees.
5. The measuring instrument for measuring the lesion area of the oral mucosa according to claim 4, wherein: the lower surface of the measuring plane is a smooth plane and is used for fitting and pressing the lesion surface of the oral mucosa, eliminating the background influence of blood and secretion and showing the original appearance of the lesion surface.
6. The measuring instrument for measuring the lesion area of the oral mucosa according to claim 5, wherein: the measurer is an assembly formed by connecting a measuring head and a handle into a whole; the measuring head is made of transparent plastic or glass, and the handle is made of plastic or stainless steel.
7. The measuring instrument for measuring the lesion area of the oral mucosa according to claim 6, wherein: a first connecting part extends outwards from one side of the measuring head, and the first connecting part is provided with at least two first connecting holes; the handle comprises a handle part and a connecting part which forms an angle of 20-40 degrees with the handle part, the second connecting part is provided with a second connecting hole matched with the first connecting hole, the handle is sequentially connected with the first connecting hole and the second connecting hole in a penetrating manner through a bolt and is screwed on one side of the nut oblique crossing measuring head, and the lower end face of the bolt is positioned above the lower end face of the measuring plane.
8. The measuring instrument for measuring the lesion area of the oral mucosa according to claim 6, wherein: the measuring head is circular, the handle comprises a handle part and a semicircular frame edge which is used for being inserted with the measuring head and forms an angle of 20-40 degrees with the handle part, an arc groove matched with the measuring diameter is formed in the inner arc side surface of the semicircular frame edge, the arc angle of the semicircular frame edge is not less than 180 degrees and not more than 185 degrees, the width of an insertion opening of the semicircular frame edge is smaller than the diameter of the measuring head, the widest part of the measuring head is inserted into the arc groove through the insertion opening of the semicircular frame through elastic deformation of the semicircular frame edge, and the measuring head is kept in the arc groove through the insertion opening smaller than the diameter of the measuring head.
9. The measuring instrument for measuring the lesion area of the oral mucosa according to claim 6, wherein: the measuring head and the handle are integrated and made of transparent plastic.
10. The measuring instrument for measuring the lesion area of the oral mucosa according to any one of claims 1 to 9, wherein: a biopsy puncher is also arranged; handle tip center is equipped with the taper hole, and the one end of biopsy hole puncher is equipped with the circular blade that is used for the biopsy, one end be equipped with the frustum that the taper hole matches, the taper hole of biopsy hole puncher through frustum grafting handle tip can be dismantled and the tip of connection at the handle to carry out the biopsy through operating handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010169437.3A CN111297364A (en) | 2020-03-12 | 2020-03-12 | Measurer for measuring disease damage area of oral mucosa |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010169437.3A CN111297364A (en) | 2020-03-12 | 2020-03-12 | Measurer for measuring disease damage area of oral mucosa |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111297364A true CN111297364A (en) | 2020-06-19 |
Family
ID=71151142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010169437.3A Pending CN111297364A (en) | 2020-03-12 | 2020-03-12 | Measurer for measuring disease damage area of oral mucosa |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111297364A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112494158A (en) * | 2020-11-27 | 2021-03-16 | 庄颖 | Preparation method of measuring rod for measuring space between universal screws of vertebral pedicle |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU293593A1 (en) * | Г. Л. Губанова | MEASURING TOOL | ||
| CN2503843Y (en) * | 2001-05-18 | 2002-08-07 | 达式金 | Multipurpose oral scope |
| CN101032414A (en) * | 2007-03-29 | 2007-09-12 | 高志 | Intelligent thorax and abdominal cavity percutaneous biopsy instrument |
| CN104720816A (en) * | 2015-03-25 | 2015-06-24 | 王文梅 | Mouth mucosa lesion area measuring film |
| CN204839525U (en) * | 2015-08-06 | 2015-12-09 | 苏州宇度医疗器械有限责任公司 | Medical probe |
| CN205126245U (en) * | 2015-11-23 | 2016-04-06 | 无锡市儿童医院 | Disposable bedsore chi |
| CN206424074U (en) * | 2016-07-19 | 2017-08-22 | 胡克萍 | A kind of medical measuring apparatus of diameter |
| CN109330638A (en) * | 2018-11-29 | 2019-02-15 | 复旦大学附属妇产科医院 | A kind of skin histology drill |
| CN209153681U (en) * | 2018-03-14 | 2019-07-26 | 上海交通大学医学院附属第九人民医院 | A kind of reconstruction of oral defect contour outline measuring set |
| CN212326400U (en) * | 2020-03-12 | 2021-01-12 | 南京市口腔医院 | Measurer for measuring disease damage area of oral mucosa |
-
2020
- 2020-03-12 CN CN202010169437.3A patent/CN111297364A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU293593A1 (en) * | Г. Л. Губанова | MEASURING TOOL | ||
| CN2503843Y (en) * | 2001-05-18 | 2002-08-07 | 达式金 | Multipurpose oral scope |
| CN101032414A (en) * | 2007-03-29 | 2007-09-12 | 高志 | Intelligent thorax and abdominal cavity percutaneous biopsy instrument |
| CN104720816A (en) * | 2015-03-25 | 2015-06-24 | 王文梅 | Mouth mucosa lesion area measuring film |
| CN204839525U (en) * | 2015-08-06 | 2015-12-09 | 苏州宇度医疗器械有限责任公司 | Medical probe |
| CN205126245U (en) * | 2015-11-23 | 2016-04-06 | 无锡市儿童医院 | Disposable bedsore chi |
| CN206424074U (en) * | 2016-07-19 | 2017-08-22 | 胡克萍 | A kind of medical measuring apparatus of diameter |
| CN209153681U (en) * | 2018-03-14 | 2019-07-26 | 上海交通大学医学院附属第九人民医院 | A kind of reconstruction of oral defect contour outline measuring set |
| CN109330638A (en) * | 2018-11-29 | 2019-02-15 | 复旦大学附属妇产科医院 | A kind of skin histology drill |
| CN212326400U (en) * | 2020-03-12 | 2021-01-12 | 南京市口腔医院 | Measurer for measuring disease damage area of oral mucosa |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112494158A (en) * | 2020-11-27 | 2021-03-16 | 庄颖 | Preparation method of measuring rod for measuring space between universal screws of vertebral pedicle |
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