CN110108533B - Tissue dehydrator - Google Patents
Tissue dehydrator Download PDFInfo
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- CN110108533B CN110108533B CN201910439241.9A CN201910439241A CN110108533B CN 110108533 B CN110108533 B CN 110108533B CN 201910439241 A CN201910439241 A CN 201910439241A CN 110108533 B CN110108533 B CN 110108533B
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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
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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- Health & Medical Sciences (AREA)
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- General Health & Medical Sciences (AREA)
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- Sampling And Sample Adjustment (AREA)
- Multiple-Way Valves (AREA)
Abstract
The invention relates to a tissue dehydrator, which comprises a machine body, wherein a reagent cylinder group, a paraffin cylinder group, a working cavity and a liquid path switching valve are arranged on the machine body, and the working cavity is respectively communicated with the reagent cylinder group and the paraffin cylinder group through the liquid path switching valve; the liquid path switching valve is internally provided with a valve path switching reference surface, and the height of the valve path switching reference surface on the machine body is higher than the highest working liquid level in the reagent cylinder group, the paraffin cylinder group and the working cavity. The installation position of the liquid path switching valve is higher than the highest liquid level of the paraffin cylinder and the working cavity liquid. When the valve body is higher than the paraffin liquid level of the paraffin cylinder, the paraffin in the cylinder is not required to be sealed by the valve for a long time, so that the leakage of the paraffin in the valve body is avoided. Once the liquid enters the working cavity, the liquid in the working cavity is not required to be sealed by a valve to prevent backflow, so that the leakage of the liquid in the valve is avoided, and the operation reliability of the whole machine is improved.
Description
Technical Field
The invention relates to a tissue dehydrator.
Background
The tissue dehydrator is used for automatically immersing human body or animal and plant tissues into various solvents according to a program to carry out pathological analysis pretreatment such as dehydration, transparency, wax immersion and the like, and is suitable for laboratories of departments such as medical institutions, hospital pathology departments, medical scientific research institutions, animal and plant scientific research institutions, food detection and the like.
The tissue dehydrator comprises a plurality of reagent chambers, paraffin chambers and working chambers, a liquid path switching valve is arranged on the tissue dehydrator, and the working chambers can be sequentially communicated with the reagent chambers and the paraffin chambers through the liquid path switching valve; when the working cavity needs to be filled with the reagent, the working cavity is kept at negative pressure and then is communicated with the corresponding reagent cavity through the liquid path switching valve, and when the working cavity needs to be filled with the paraffin, the working cavity is communicated with the corresponding paraffin cavity through the liquid path switching valve.
The utility model provides a liquid way change-over valve in the hydroextractor in the past appears the seepage easily, and the reagent and the paraffin of each passageway can appear the micro-seepage, and on the contrary, its reason is that liquid way change-over valve self structural design is unreasonable, and secondly liquid way change-over valve mounted position is unreasonable in the hydroextractor, and the mounting position of liquid way change-over valve in the past is less than working chamber and paraffin chamber on the hydroextractor, when the working chamber exists the reagent, can have the difference in height between reagent highest position and the change-over valve, and this kind of difference in height can make the change-over valve bear the pressure of reagent to cause liquid way change-over valve to reveal easily.
Disclosure of Invention
The invention aims to solve the technical problems that: overcomes the defects of the prior art, provides a tissue dehydrator, and solves the problem that a liquid path switching valve in the prior dehydrator is easy to leak.
The technical scheme adopted for solving the technical problems is as follows: the tissue dehydrator comprises a machine body, wherein a reagent cylinder group, a paraffin cylinder group, a working cavity and a liquid path switching valve are arranged on the machine body, and the working cavity is respectively communicated with the reagent cylinder group and the paraffin cylinder group through the liquid path switching valve;
the liquid path switching valve is internally provided with a valve path switching reference surface, and the height of the valve path switching reference surface on the machine body is higher than the highest working liquid level in the reagent cylinder group, the paraffin cylinder group and the working cavity.
Further, the liquid path switching valve comprises a valve seat body and a bridge assembly;
the valve seat body is provided with a main passage and a plurality of branch passages, the upper surface of the valve seat body is provided with an annular static valve surface, the outlets of the branch passages are respectively arranged on the annular static valve surface, and the inlet of the main passage is arranged on the valve seat body at the center of the annular static valve surface;
the bridge assembly comprises an inlet end and an outlet end, wherein the inlet of the bridge assembly is arranged at the inlet end, the outlet of the bridge assembly is arranged at the outlet end, the outlet of the bridge assembly is in rotary sealing connection with the inlet of the main passage, the inlet end of the bridge assembly forms a movable valve face, and the movable valve face of the bridge assembly is in sliding sealing fit with the annular static valve face of the valve seat body;
the contact surface between the movable valve surface and the annular static valve surface is the valve path switching reference surface.
Further, the bridge assembly comprises a mandrel and a bridge shaft, a first bridge passage is arranged in the bridge shaft, a second bridge passage is arranged in the mandrel, and the outlet end of the bridge shaft is fixedly connected with the inlet end of the mandrel in a sealing manner so that the first bridge passage and the second bridge passage are communicated.
Furthermore, a step mounting opening is formed at the inlet of the main passage, a T-shaped shaft sleeve is arranged at the step mounting opening, a rolling bearing is arranged on the T-shaped shaft sleeve, and the lower end of the mandrel is connected with the rolling bearing and the T-shaped shaft sleeve.
Further, a valve housing is arranged on the valve seat body, the bridge assembly is positioned in a housing cavity of the valve housing, the upper end of the mandrel penetrates through the valve housing, and an angular thrust bearing is arranged between the mandrel and the valve housing; the upper end of the mandrel is provided with a belt pulley, and the belt pulley is connected with a motor through a belt.
Further, the bridge crossing shaft comprises a transverse shaft and a vertical shaft, a transverse cavity is formed in the transverse shaft, a vertical cavity is formed in the vertical shaft, the vertical cavity is communicated with the transverse cavity, and the transverse cavity is communicated with a second bridge crossing channel;
the fixed cover of vertical axis lower extreme suit, fixed cover is in vertical axis lower extreme up-and-down sliding seal motion, fixed cover lower extreme is fixed to be set up and is moved the valve block, set up the valve opening on moving the valve block, set up the perforation on the fixed cover, move the valve block lower extreme be the valve face that moves, it is provided with elasticity adjustment mechanism to erect the intracavity, so that move the valve face closely laminating on annular quiet valve face.
Further, the elastic force adjusting mechanism comprises an adjusting screw, an upper sealing joint, a lower sealing joint and a compression spring; the adjusting screw is screwed at the upper end of the vertical shaft, the upper sealing joint and the lower sealing joint are positioned in the vertical cavity, the compression spring is positioned between the upper sealing joint and the lower sealing joint, and the lower end of the lower sealing joint is abutted to the fixing sleeve.
Further, the valve port switching area of the valve seat body is provided with an annular groove, an annular static valve plate is fixedly arranged in the annular groove, the outlet of each branch passage is provided with the annular static valve plate, and the upper surface of the static valve plate is the static valve face.
Further, each branch passage is divided into a plurality of paraffin passages, a plurality of reagent passages and a liquid exchange passage;
the annular static valve surface is divided into a paraffin area and a reagent area;
the outlets of the paraffin passages are arranged in the paraffin area, and the outlets of the reagent passages and the outlets of the liquid exchange passages are arranged in the reagent area.
Further, an overflow passage is formed in the valve seat body, a sedimentation area is formed on the valve seat body in the middle of the annular static valve plate, the height of the sedimentation area is lower than that of the annular static valve face, and an inlet of the overflow passage is formed in the sedimentation area;
radial overflow grooves are respectively arranged on the valve port switching areas on two sides of the paraffin area, and the radial overflow grooves are connected with the sedimentation area.
The beneficial effects of the invention are as follows:
a dehydrator is provided, wherein the installation position of a liquid path switching valve is higher than the highest liquid level of liquid in a paraffin cylinder and a working cavity. When the valve body is higher than the paraffin liquid level of the paraffin cylinder, the paraffin in the cylinder is not required to be sealed by the valve for a long time, so that the leakage of the paraffin in the valve body is avoided. Once the liquid enters the working cavity, the liquid in the working cavity is not required to be sealed by a valve to prevent backflow, so that the leakage of the liquid in the valve is avoided, and the operation reliability of the whole machine is improved.
The movable valve plate in the liquid path switching valve can be stably pressed on the static valve surface by virtue of the elastic force adjusting mechanism, so that the contact tightness between the movable valve surface and the static valve surface is improved, and leakage of the liquid path switching valve during liquid path switching is prevented.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of a tissue dehydrator according to the present invention;
FIG. 2 is a perspective view of the switching valve of the present invention;
FIG. 3 is a schematic illustration of the diverter valve with the valve housing removed;
FIG. 4 is a semi-sectional view of a diverter valve;
FIG. 5 is a cross-sectional view of the bridge shaft;
FIG. 6 is a schematic view of a valve seat body;
FIG. 7 is a schematic illustration of a static valve plate on a valve seat body;
FIG. 8 is a perspective view of a static valve plate;
FIG. 9 is a perspective view of the bridge shaft;
wherein 1, a valve seat body, 1A, a main passage, 1B, an overflow passage, 2, a mandrel, 21, a shaft sleeve, 3, a bridge shaft, 31, a transverse cavity, 32, a vertical cavity, 4, an elastic force adjusting mechanism, 41, an upper sealing joint, 42, a lower sealing joint, 43, a compression spring, 44, an adjusting screw, 51, a fixed sleeve, 52 and a movable valve plate, 61, valve shell, 62, motor, 7, static valve plate, 71, paraffin passageway, 72, reagent passageway, 73, liquid exchange passageway, 74, radial overflow groove, 8, organism, 81, paraffin chamber, 82, working chamber, A, valve passageway switching reference surface, B, working chamber maximum working liquid level, C, paraffin cylinder maximum working liquid level.
Detailed Description
The invention will now be further described with reference to specific examples. These drawings are simplified schematic views illustrating the basic structure of the present invention by way of illustration only, and thus show only the constitution related to the present invention.
As shown in fig. 1, a tissue dehydrator comprises a machine body 8, wherein a reagent cylinder group, a paraffin cylinder group, a working cavity 82 and a liquid path switching valve are arranged on the machine body 8, the working cavity 82 is internally provided with a working cavity highest working liquid level B, the paraffin cylinder is internally provided with a paraffin cylinder highest working liquid level C, and the reagent cylinder is lower than the paraffin cylinder; the working cavity 82 is respectively communicated with the reagent cylinder group and the paraffin cylinder group through a liquid path switching valve; the liquid path switching valve is internally provided with a valve path switching reference surface A, and the valve path switching reference surface A is higher than the highest working liquid level in the reagent cylinder group, the paraffin cylinder group and the working cavity 82 on the machine body 8.
The installation position of the liquid path switching valve is higher than the highest liquid level of the paraffin cylinder and the working cavity liquid. When the valve body is higher than the paraffin liquid level of the paraffin cylinder, the paraffin in the cylinder is not required to be sealed by the valve for a long time, so that the leakage of the paraffin in the valve body is avoided. Once the liquid enters the working cavity, the liquid in the working cavity is not required to be sealed by a valve to prevent backflow, so that the leakage of the liquid in the valve is avoided, and the operation reliability of the whole machine is improved.
Specifically, as shown in fig. 2-9, for the liquid path switching valve, the liquid path switching valve includes a valve seat body 1 and a bridge assembly; the valve seat body 1 is provided with a main passage 1A and a plurality of branch passages, the upper surface of the valve seat body 1 is provided with an annular static valve surface, the outlets of the branch passages are respectively arranged on the annular static valve surface, and the inlet of the main passage 1A is arranged on the valve seat body 1 at the center of the annular static valve surface.
As shown in fig. 4 and 5, a bridge passage is arranged in the bridge passing assembly, the bridge passing assembly comprises an inlet end and an outlet end, the inlet of the bridge passing passage is arranged at the inlet end, the outlet of the bridge passing passage is arranged at the outlet end, the outlet end of the bridge passing passage is in rotary sealing connection with the inlet of the main passage 1A, the inlet end of the bridge passing assembly forms a movable valve surface, and the movable valve surface of the bridge passing assembly is in sliding sealing fit with the annular static valve surface of the valve seat body 1; the contact surface between the movable valve surface and the annular static valve surface is the valve path switching reference surface A.
Specifically, the bridge assembly comprises a mandrel 2 and a bridge shaft 3, a first bridge passage is arranged in the bridge shaft 3, a second bridge passage is arranged in the mandrel 2, and the outlet end of the bridge shaft 3 is fixedly connected with the inlet end of the mandrel 2 in a sealing manner so that the first bridge passage and the second bridge passage are communicated.
The first bridge passage, the second bridge passage are communicated and communicated with the main passage 1A, and the communication with the working chamber 82 is realized according to the corresponding reagent chamber or paraffin chamber 81 connected with the first bridge passage.
Specifically, a step mounting port is formed at the inlet of the main passage 1A, a T-shaped shaft sleeve 21 is mounted at the step mounting port, a rolling bearing is arranged on the T-shaped shaft sleeve 21, and the lower end of the mandrel is connected with the rolling bearing and the T-shaped shaft sleeve 21.
Meanwhile, a valve housing 61 is arranged on the valve seat body 1, the gap bridge assembly is positioned in a housing cavity of the valve housing 61, the upper end of the mandrel 2 penetrates through the valve housing 61, and an angular thrust bearing is arranged between the mandrel 2 and the valve housing 61; the upper end of the mandrel 2 is provided with a belt pulley, and the belt pulley is connected with a motor 62 through a belt.
Bearings are respectively arranged at the upper end and the lower end of the mandrel 2, so that the stability of rotation of the mandrel 2 is improved. The spindle 2 is driven to rotate by a motor 62, and the motor 62 drives the bridge assembly to rotate in the valve housing 61.
Specifically, as shown in fig. 4 and fig. 5, the bridge shaft 3 comprises a transverse shaft and a vertical shaft, a transverse cavity 31 is formed in the transverse shaft, a vertical cavity 32 is formed in the vertical shaft, the vertical cavity 32 is communicated with the transverse cavity 31, and the transverse cavity 31 is communicated with a second bridge passage;
the fixed cover 51 is sleeved at the lower end of the vertical shaft, the fixed cover 51 performs up-and-down sliding sealing movement at the lower end of the vertical shaft, the movable valve plate 52 is fixedly arranged at the lower end of the fixed cover 51, a valve hole is formed in the movable valve plate 52, a perforation is formed in the fixed cover 51, the lower end face of the movable valve plate 52 is the movable valve face, and an elastic adjusting mechanism is arranged in the vertical cavity 32 so that the movable valve face is tightly attached to the annular static valve face.
As shown in fig. 5, the elastic force adjusting mechanism 4 includes an adjusting screw 44, an upper sealing joint 41, a lower sealing joint 42, and a compression spring 43; the adjusting screw 44 is screwed on the upper end of the vertical shaft, the upper sealing joint 41 and the lower sealing joint 42 are positioned in the vertical cavity 32, the compression spring 43 is positioned between the upper sealing joint 41 and the lower sealing joint 42, and the lower end of the lower sealing joint 42 is abutted against the fixing sleeve 51. O-shaped sealing rings are respectively arranged on the side walls of the two sealing joints and are used for improving the tightness between the two sealing joints and the inner wall of the vertical cavity 32. The position of the upper sealing joint 41 in the vertical cavity 32 can be controlled by rotating the adjusting screw 44, after the vertical cavity 32 in the upper sealing joint 41 is depressed, the elasticity of the compression spring 43 to the lower sealing joint 42 is increased, so that the lower sealing joint 42 is more forcefully abutted against the fixed sleeve 51, namely, the downward abutting force of the movable valve plate 52 is improved, and the tightness of the movable valve plate 52 is improved.
As shown in fig. 6 and fig. 7 and fig. 8, the valve port switching area of the valve seat body 1 is provided with an annular groove, an annular static valve plate 7 is fixedly arranged in the annular groove, outlets of all branch passages are provided on the annular static valve plate 7, and the upper surface of the static valve plate 7 is the static valve face. The contact surfaces of the static valve plate 7 and the movable valve plate 52 are mirror polished with high precision, so that the sealing performance of the end surfaces is improved. Static valve plate 7 material: 2Cr13 stainless steel hardening and tempering hardness HRc30-35 flatness 0.05 surface mirror grinding (mirror 3000-5000 mesh).
Specifically, in this embodiment, the 17 branch passages are divided into 4 paraffin passages 71, 12 reagent passages 72, and 1 liquid change passage 73;
the annular static valve surface is divided into a paraffin area and a reagent area; the outlets of the 4 paraffin passages 71 are arranged in the paraffin area, and the outlets of the 12 reagent passages 72 and the outlets of the 1 liquid exchange passage 73 are arranged in the reagent area.
The 12 reagent passages 72 are respectively connected with 12 reagent chambers, the 4 paraffin passages 71 are respectively connected with 4 paraffin chambers 81, and the liquid exchange passage 73 is connected with the outside; the main passage 1A is connected to the working chamber 82, and when the working chamber 82 needs to be cleaned, the working chamber 82 is connected to the liquid exchanging passage 73, so that the working chamber liquid is exchanged with the external liquid through the liquid exchanging passage 73.
In order to prevent leakage of various reagents and paraffin, an overflow passage 1B is formed in the valve seat body 1, a sedimentation area is formed on the valve seat body 1 in the middle of the annular static valve plate 7, the height of the sedimentation area is lower than that of the annular static valve plate, and an inlet of the overflow passage 1B is formed on the sedimentation area; radial overflow grooves 74 are respectively arranged on the valve port switching areas on two sides of the paraffin area, and the radial overflow grooves 74 are connected with the sedimentation area. The radial overflow groove on the static valve plate 7 can effectively prevent leaked paraffin from flowing into the adjacent reagent passage 72, so that the reagent passage 72 is blocked, and the overall reliability of the valve is improved.
The switching valve is arranged on the tissue dehydrator and is used for communicating the working cavity 82 with each reagent cavity and the paraffin cavity 81, each reagent cavity stores reagents with different concentrations, when the working cavity 82 needs reagents, the movable valve plate 52 is rotated to the outlet of the corresponding reagent passage 72 by the rotation of the bridge passing assembly, the corresponding reagent cavity is communicated with the working cavity 82 by the bridge passing assembly, the reagent in the reagent cavity is conveyed to the working cavity 82 by the negative pressure maintained by the working cavity 82, and when the working cavity 82 needs paraffin, the movable valve plate 52 is rotated to the outlet of the corresponding paraffin passage 71 by the rotation of the bridge passing assembly, and the corresponding paraffin cavity 81 is communicated with the working cavity 82 by the bridge passing assembly.
The switching valve has high sealing performance, and when the adjusting screw 44 is screwed down, the compression spring 43 is compressed, and an axial force is applied to the movable valve plate 52, so that the movable valve plate 52 is tightly attached to the end face of the static valve plate 7. The valve plate end face can be reliably sealed in the process of relative movement. And effectively compensate the condition that the sealing is not tight because of factors such as expend with heat and contract with cold, part machining error take place, improved the sealing reliability of valve.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (5)
1. The tissue dehydrator is characterized by comprising a machine body, wherein the machine body is provided with a reagent cylinder group, a paraffin cylinder group, a working cavity and a liquid path switching valve, and the working cavity is respectively communicated with the reagent cylinder group and the paraffin cylinder group through the liquid path switching valve;
a valve path switching reference surface is arranged in the liquid path switching valve, and the height of the valve path switching reference surface on the machine body is higher than the highest working liquid level in the reagent cylinder group, the paraffin cylinder group and the working cavity;
the liquid path switching valve comprises a valve seat body and a bridge assembly;
the valve seat body is provided with a main passage and a plurality of branch passages, the upper surface of the valve seat body is provided with an annular static valve surface, the outlets of the branch passages are respectively arranged on the annular static valve surface, and the inlet of the main passage is arranged on the valve seat body at the center of the annular static valve surface;
the bridge assembly comprises an inlet end and an outlet end, wherein the inlet of the bridge assembly is arranged at the inlet end, the outlet of the bridge assembly is arranged at the outlet end, the outlet of the bridge assembly is in rotary sealing connection with the inlet of the main passage, the inlet end of the bridge assembly forms a movable valve face, and the movable valve face of the bridge assembly is in sliding sealing fit with the annular static valve face of the valve seat body;
the contact surface between the movable valve surface and the annular static valve surface is the valve path switching reference surface;
the bridge assembly comprises a mandrel and a bridge shaft, a first bridge passage is arranged in the bridge shaft, a second bridge passage is arranged in the mandrel, and the outlet end of the bridge shaft is fixedly connected with the inlet end of the mandrel in a sealing manner so that the first bridge passage and the second bridge passage are communicated;
the valve seat body is provided with a valve housing, the bridge assembly is positioned in a housing cavity of the valve housing, the upper end of the mandrel penetrates through the valve housing, and an angular thrust bearing is arranged between the mandrel and the valve housing; the upper end of the mandrel is provided with a belt pulley, and the belt pulley is connected with a motor through a belt;
the bridge passing shaft comprises a transverse shaft and a vertical shaft, a transverse cavity is formed in the transverse shaft, a vertical cavity is formed in the vertical shaft, the vertical cavity is communicated with the transverse cavity, and the transverse cavity is communicated with a second bridge passing channel;
the lower end of the vertical shaft is sleeved with a fixed sleeve, the fixed sleeve performs up-and-down sliding sealing movement at the lower end of the vertical shaft, the lower end of the fixed sleeve is fixedly provided with a movable valve plate, the movable valve plate is provided with a valve hole, the fixed sleeve is provided with a perforation, the lower end surface of the movable valve plate is the movable valve surface, and an elastic adjusting mechanism is arranged in the vertical cavity so that the movable valve surface is tightly attached to the annular static valve surface;
the elastic force adjusting mechanism comprises an adjusting screw, an upper sealing joint, a lower sealing joint and a compression spring; the adjusting screw is screwed at the upper end of the vertical shaft, the upper sealing joint and the lower sealing joint are positioned in the vertical cavity, the compression spring is positioned between the upper sealing joint and the lower sealing joint, and the lower end of the lower sealing joint is abutted to the fixing sleeve.
2. The tissue dehydrator according to claim 1, wherein a step mounting opening is formed at an inlet of the main passage, a T-shaped shaft sleeve is mounted at the step mounting opening, a rolling bearing is arranged on the T-shaped shaft sleeve, and a lower end of the mandrel is connected with the rolling bearing and the T-shaped shaft sleeve.
3. The tissue dehydrator according to claim 1, wherein the valve port switching area of the valve seat body is provided with an annular groove, an annular static valve plate is fixedly arranged in the annular groove, outlets of the branch passages are provided on the annular static valve plate, and the upper surface of the static valve plate is the static valve surface.
4. The tissue dehydrator according to claim 3,
each branch passage is divided into a plurality of paraffin passages, a plurality of reagent passages and a liquid exchange passage;
the annular static valve surface is divided into a paraffin area and a reagent area;
the outlets of the paraffin passages are arranged in the paraffin area, and the outlets of the reagent passages and the outlets of the liquid exchange passages are arranged in the reagent area.
5. The tissue dehydrator according to claim 3, wherein an overflow passage is formed in the valve seat body, a sedimentation area is formed on the valve seat body in the middle of the annular static valve plate, the height of the sedimentation area is lower than that of the annular static valve surface, and an inlet of the overflow passage is formed on the sedimentation area;
radial overflow grooves are respectively arranged on the valve port switching areas on two sides of the paraffin area, and the radial overflow grooves are connected with the sedimentation area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910439241.9A CN110108533B (en) | 2019-05-24 | 2019-05-24 | Tissue dehydrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910439241.9A CN110108533B (en) | 2019-05-24 | 2019-05-24 | Tissue dehydrator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110108533A CN110108533A (en) | 2019-08-09 |
| CN110108533B true CN110108533B (en) | 2023-10-24 |
Family
ID=67492159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910439241.9A Active CN110108533B (en) | 2019-05-24 | 2019-05-24 | Tissue dehydrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110108533B (en) |
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