A depilatory agent regulating and setting device for animal experiments
By designing a hair removal agent for animal experiments to adjust a given device, the problems of irritating odors, difficulty in cleaning up the dose and difficulty in adjusting the use of hair removal agents in the prior art are solved, and a more efficient and safe hair removal treatment is achieved.
Patent Information
- Application Number
- CN202010425633.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-05-19
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2040-05-19
AI Technical Summary
The use of hair removal agents in existing animal experiments has problems such as irritating odors that cause discomfort among experimenters, difficulty in cleaning up the hair removal agents, and difficulty in quickly adjusting the dosage used.
A depilatory agent adjustment device is designed, including a water outlet mechanism, a adjustment mechanism, a water storage tank, a pressure mechanism and a housing. The precise adjustment and use of the depilatory agent is achieved through the combination of a ridge structure, a gear switching rod, a communicator and a communicator shaft.
This device can easily control the infiltration dose of three types of hair removal agents, avoid spilling out of hair removal agents, reduce the risk of experimenters being exposed to irritating odors, improve experimental efficiency and simplify the cleaning process.
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Figure CN111685912B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of animal experiment devices, in particular to a depilatory agent regulating and setting device used for animal experiments. Background Art
[0002] In animal experiments, hair sometimes affects experimental operations and observations, so it must be removed. At present, chemical depilatories are usually used to remove animal hair. The specific operation process is to place the depilator in an open container, and the experimenter soaks the depilator with gauze and applies it to the experimental area on the animal's body surface. After a few minutes, the shed hair can be washed off with warm water. Because the depilator is placed in an open container and the experimenter soaks the gauze by himself, the pungent smell of the depilator is likely to cause discomfort to the experimenter and reduce the efficiency of the experiment. On the other hand, it is easy to The depilatory agent spills and it is not easy to clean the experimental site. In addition, when the depilatory agent is infiltrated, the dosage of the depilatory agent is often adjusted according to the size of the experimental area on the animal body surface. For example, when the experimental area on the animal body surface is large, a thicker gauze is needed to infiltrate more depilatory agent; when the experimental area on the animal body surface is small, a thinner gauze can be used to infiltrate more depilatory agent. However, in the existing method, the experimenter cannot easily and quickly adjust the dosage of the depilatory agent to be infiltrated, which easily causes a waste of the depilatory agent. Summary of the invention
[0003] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide a depilatory agent regulating and setting device for animal experiments.
[0004] The purpose of the present invention can be achieved by the following technical scheme: a depilatory agent regulating and setting device for animal experiments, comprising a water outlet mechanism, an adjusting mechanism, a water storage tank, a pressure mechanism and a shell, wherein the water outlet mechanism and the pressure mechanism are respectively installed at two ends of the shell, the adjusting mechanism and the water storage tank are installed inside the shell, the water outlet mechanism comprises water outlet nozzles respectively opened on three sides of the prism, the three sides of the prism with water outlet nozzles are respectively installed with sponge blocks of different densities, the side of the prism without water outlet nozzles is installed with a cleaning gauze, the adjusting structure comprises a gear switching lever, a connector and a connecting shaft, one end of the gear switching lever is connected to the prism The gear shift lever is connected to each other, the other end of the gear shift lever is connected to the connecting shaft, the connecting device is sleeved on the connecting shaft, the connecting device is provided with water outlet holes respectively connected to the water outlet nozzles, the connecting device is also provided with a water inlet connected to the water storage tank, a water agent flow channel is arranged in the connecting shaft, the water storage tank is connected to a pressure mechanism, and pressure is applied to the water storage tank by the pressure mechanism, so that the depilatory agent in the water storage tank flows into the water agent channel of the connecting shaft through the water inlet of the connecting device, and the gear adjustment lever is rotated to drive the connecting shaft to rotate, so that the water agent channel is connected to a water outlet hole on the connecting device, so that the depilatory agent in the water agent channel is transmitted to the water outlet nozzle through the water outlet hole.
[0005] Furthermore, a connector is installed on the water outlet, and the connector is connected to the water outlet nozzle through a first water outlet pipe. One end of the water storage tank is connected to the water inlet on the coupler through a second water outlet pipe, and the other end of the water storage tank is connected to the pressure mechanism.
[0006] Furthermore, the water storage tank is provided with an end cover, the pressure-applying mechanism comprises a bellows, a bellows spring is installed in the bellows, a bellows cover is installed at one end of the bellows, the other end of the bellows is connected to the end cover, through holes are provided at the center positions of the end cover and the bellows cover, and one-way valves are installed in the through holes of the end cover and the bellows cover, so as to control the gas to enter the water storage tank only from the outside.
[0007] Furthermore, the coupler is provided with a first inner hole, a second inner hole and a third inner hole which are sequentially connected in the axial direction, the inner wall of the first inner hole is in contact with the outer surface of the connecting shaft, the water outlet holes are all connected with the first inner hole, there is a gap between the inner wall of the second inner hole and the outer surface of the connecting shaft, the water inlet is connected with the second inner hole, an annular groove is processed on the inner wall of the third inner hole, and the coupler is provided with positioning holes corresponding to the four sides of the prism, respectively, and the positioning holes are connected with the annular groove.
[0008] Furthermore, the aqueous solution channel is a U-shaped channel, which is specifically composed of a first channel hole and a second channel hole which are connected to each other on the connecting shaft. The connecting shaft is also provided with a blind hole for installing a positioning spring. The center lines of the first channel hole, the second channel hole and the blind hole are parallel to each other in the same plane. A positioning ball is installed on the top of the positioning spring. When the connecting shaft rotates, the positioning spring pushes the positioning ball against the annular groove for sliding. When the positioning ball slides and bounces into the positioning hole, the rotation of the connecting shaft can be restricted at this time, and the aqueous solution channel is connected to a water outlet hole on the connector.
[0009] Furthermore, a step groove is installed at a position between the first channel hole and the second channel hole on the connecting shaft and at a position between the second channel hole and the blind hole on the connecting shaft. The two step grooves correspond to the two ends of the second inner hole respectively. A rubber ring is sleeved in the step groove, and the outer surface of the rubber ring is in sliding contact with the inner wall of the second inner hole.
[0010] Furthermore, a mounting hole for inserting a gear shift lever is provided at the center position of the top of the prism, and a step surface is provided on the gear shift lever to axially clamp and position the gear shift lever in the mounting hole.
[0011] Furthermore, a cross-shaped boss is provided on the end surface of the gear shift lever connected to the connecting shaft, and a cross-shaped groove is provided on the end surface of the connecting shaft connected to the gear shift lever.
[0012] Furthermore, the shell includes an upper shell and a lower shell, the lower shell is provided with a rib plate slot for fixing and installing the coupler and the water storage tank, and one end of the upper shell and the lower shell is provided with a thread for connecting and installing the shell cover.
[0013] Furthermore, an arrow indicator mark is attached to the end surface of the gear shift lever connected to the prism, and the indicating direction of the arrow indicator mark is parallel to the center line of the blind hole on the connecting shaft in the same plane.
[0014] Compared with the prior art, the present invention has the following advantages:
[0015] 1. The present invention utilizes the four sides of the prism structure to respectively install sponges of different densities and cleaning gauze, and provides water outlet nozzles on the three sides where the sponges are installed. Combined with the structural design of the gear switching lever, the connector and the connecting shaft, the gear switching lever is rotated to drive the connecting shaft to rotate, so that the depilatory agent can flow out of the water outlet nozzle or not flow out of the depilatory agent accordingly, thereby conveniently realizing the control of the infiltration dosage of the three depilatory agents and the cleaning operation on the animal body surface.
[0016] Second, the present invention adopts a water storage tank combined with a bellows pressure-applying method, which can ensure cleanliness during the experiment and prevent the experimenters from being affected by the irritating smell of the depilatory agent, while also being able to quickly and reliably promote the flow of the depilatory agent.
[0017] 3. The present invention arranges a positioning spring and a positioning ball on the connecting shaft and arranges a positioning hole connected to the annular groove on the connecting device, so that when the gear switching lever rotates, the rotation position of the connecting shaft can be reliably positioned, so that the water agent channel of the connecting shaft is accurately connected to the water outlet hole on the connecting device, further accelerating the hair removal processing efficiency during the experiment. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the appearance structure of the present invention;
[0019] Figure 2 It is a schematic diagram of the structural decomposition of the present invention;
[0020] Figure 3 for Figure 1 A top view cross-sectional schematic diagram of ;
[0021] Figure 4 It is a structural schematic diagram of the water outlet mechanism;
[0022] Figure 5 is a top view cross-sectional schematic diagram of a connector;
[0023] Figure 6 It is a structural schematic diagram of the connecting shaft;
[0024] Figure 7 It is a connection diagram of the gear shift lever and the connecting shaft;
[0025] Figure 8 The structure of the lower shell is shown in FIG.
[0026] Explanation of marks in the figure: 1. water outlet nozzle, 2. gear switching lever, 3. first water outlet pipe, 4. connector, 5. rubber ring, 6. positioning spring, 7. positioning ball, 8. outer shell cover, 9. one-way valve, 10. bellows, 11. bellows cover, 12. bellows spring, 13. end cover, 14. water storage tank, 15. outer shell, 16. second water outlet pipe, 17. connector, 17-1. first inner hole, 17-2. water outlet hole, 17-3. water inlet, 17-4. second inner hole, 17-5. third inner hole, 17-6. annular groove, 17-7. positioning hole, 18. connecting shaft, 18-1. cross groove, 18-2. first channel hole, 18-3. second channel hole, 18-4. step groove, 18-5. blind hole. DETAILED DESCRIPTION
[0027] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.
[0028] Example
[0029] like Figure 1 to Figure 3 As shown, a depilatory agent regulating and administering device for animal experiments includes a water outlet mechanism, a regulating mechanism, a water storage tank 14, a pressure mechanism and a shell 15, wherein the water outlet mechanism and the pressure mechanism are respectively installed at both ends of the shell 15, the regulating mechanism and the water storage tank 14 are installed inside the shell 15, and the two ends of the water storage tank 14 are respectively connected to the regulating mechanism and the pressure mechanism, wherein the water outlet mechanism is as shown in FIG. Figure 4 As shown, the water outlet mechanism is specifically a prism structure, and water outlet nozzles 1 are provided on the three sides of the prism. Sponge blocks of different densities are installed on these three sides respectively to soak different doses of depilatory agents, and the remaining side is only installed with cleaning gauze for cleaning the animal body surface after depilatory treatment;
[0030] The adjustment mechanism includes a gear shift lever 2, a connector 17 and a connecting shaft 18. The gear shift lever 2 is provided with a step surface to axially clamp and position the gear shift lever 2 in the mounting hole at the center of the top of the prism and pass through the mounting hole to facilitate the user to rotate the gear shift lever 2. One end surface of the gear shift lever 2 is provided with a cross boss to be engaged with a cross groove 18-1 provided on the end surface of the connecting shaft 18. When the gear shift lever 2 is rotated, the connecting shaft 18 is driven to rotate.
[0031] The coupling 17 is fixedly installed inside the housing 15 and sleeved on the coupling shaft 18. Figure 5 As shown, the coupler 17 is provided with a first inner hole 17-1, a second inner hole 17-4 and a third inner hole 17-5 which are connected in sequence in the axial direction, the coupler 17 is provided with a water outlet hole 17-2 respectively connected to the water outlet nozzle 1 and a water inlet 17-3 connected to the water storage tank 14, the inner wall of the first inner hole 17-1 is in contact with the outer surface of the connecting shaft 18, the water outlet holes 17-2 are connected to the first inner hole 17-1, there is a gap between the inner wall of the second inner hole 17-4 and the outer surface of the connecting shaft 18, the water inlet 17-3 is connected to the second inner hole 17-4, an annular groove 17-6 is processed on the inner wall of the third inner hole 17-5, and the coupler 17 is provided with positioning holes 17-7 respectively corresponding to the four sides of the prism, and the positioning holes 17-7 are connected to the annular groove 17-6;
[0032] A U-shaped liquid flow channel is provided in the connecting shaft 18, one end of the liquid flow channel is located in the second inner hole 17-4, and the other end of the liquid flow channel is located in the first inner hole 17-1. Figure 6 and Figure 7As shown, the first channel hole 18-2 and the second channel hole 18-3 provided on the connecting shaft 18 are connected to each other to form an aqueous solution channel. The connecting shaft 18 is also provided with a blind hole 18-5 for installing a positioning spring 6. The center lines of the first channel hole 18-2, the second channel hole 18-3 and the blind hole 18-5 are parallel to each other in the same plane. A positioning ball 7 is installed on the top of the positioning spring 6. When the connecting shaft 18 rotates, the positioning spring 6 pushes the positioning ball 7 against the annular groove 17-6 to slide. When the positioning ball 7 slides to bounce into the positioning hole 17-7, the rotation of the connecting shaft 18 can be restricted at this time, and the aqueous solution channel is connected to a water outlet hole 17-2 on the connector 17.
[0033] The connecting shaft 18 is provided with a step groove 18-4 at a position between the first channel hole 18-2 and the second channel hole 18-3 and at a position between the second channel hole 18-3 and the blind hole 18-5. The two step grooves 18-4 correspond to the two ends of the second inner hole 17-4 respectively. A rubber ring 5 is sleeved in the step groove 18-4. The outer surface of the rubber ring 5 is in sliding contact with the inner wall of the second inner hole 17-4 and plays a sealing role, that is, preventing the depilatory agent in the second inner hole 17-4 from flowing into the first inner hole 17-1 and the third inner hole 17-5 when the device is working.
[0034] In addition, the water outlet holes 17-2 are all threaded holes. The threaded end of the connector 4 is screwed into the water outlet hole 17-2, and the other end of the connector 4 is connected to the water outlet nozzle 1 through the first water outlet pipe 3. The first water outlet pipe 3 is a transparent plastic hose. The first water outlet pipe 3 and the water outlet nozzle 1 are tightly sealed by glue. The first water outlet pipe 3 is also sealed with the connector 4. A step surface is provided in the middle of the connector 4.
[0035] In this embodiment, the water storage tank 14 is cylindrical, and one end of the water storage tank 14 is connected to the water inlet 17-3 on the coupler 17 through the second water outlet pipe 16. Both ends of the second water outlet pipe 16 are connected to the connector 4, that is, the water inlet 17-3 and the water storage tank 14 are installed with the connector 4. The other end of the water storage tank 14 is connected to the pressure mechanism, and the pressure mechanism includes a bellows 10, and a bellows spring 12 is installed in the bellows 10. One end of the bellows 10 is installed There is a bellows cover 11, and the other end of the bellows 10 is connected to the end cover 13 of the water storage tank 14. The center positions of the end cover 13 and the bellows cover 11 are both provided with through holes, and both through holes are installed with one-way valves 9, so that the gas can only enter the water storage tank 14 from the outside. In this embodiment, the left end of the corrugated tube 10 is glued and fixed to the right surface of the end cover 13 by glue, and the bellows cover 11 is also glued to the right end surface of the bellows 10 by glue;
[0036] The housing 15 includes an upper housing and a lower housing. The right ends of the upper housing and the lower housing are both provided with threads. After the upper housing and the lower housing are installed correspondingly, the housing cover 8 is screwed with the threads. A through hole is provided in the middle of the housing cover 18. The inner diameter of the through hole is smaller than the outer diameter of the water tank 14, so as to effectively fix the position of the water tank 14. Figure 8 As shown, the lower shell is provided with a rib plate slot for fixing and installing the coupler 17 and the water storage tank 14;
[0037] In order to facilitate the use of the device more intuitively, an arrow indicator mark (such as Figure 7 As shown), the direction of the arrow indicator mark is parallel to the center line of the blind hole 18-5 on the connecting shaft 18 in the same plane, so when the gear switching lever 2 is rotated, the arrow indicator mark is rotated to align with one side of the prism, so that the depilatory agent can flow out from the water outlet nozzle on the side or prevent the depilatory agent from flowing out.
[0038] The above device is applied in practice, and the specific working process is as follows: before use, the arrow mark on the left end face of the gear switching lever 2 points to the side of the prism where the water outlet nozzle 1 is not provided, and the whole device is in a closed state. The positioning ball 7 bounces into the positioning hole 17-2 corresponding to the side of the prism where the water outlet nozzle 1 is not provided, and the depilatory agent cannot flow out;
[0039] Before performing surgical experiments on small and medium-sized animals, a sponge block with a suitable density on the side of the prism can be selected as the water outlet of the depilatory agent by judging the size of the animal to be subjected to the surgical experiment. When starting to use the device, the end cover 13 is opened, and the corresponding depilatory agent is poured into the water storage tank 14 from the tail of the device, and the end cover 13 is screwed on, and the positioning ball 7 is pressed until the positioning ball 7 leaves the positioning hole 17-2, and the gear switching lever 2 is rotated. The gear switching lever 2 is connected to the cross boss on the right end face and drives the connecting shaft 18 to rotate together. The positioning ball 7 is continuously squeezed by the positioning spring 6 along the connecting vessel 17. The annular groove 17-6 slides, and when the positioning ball 7 slides to bounce into the positioning hole 17-7, the water agent channel in the connecting shaft 18 can be connected with a water outlet hole 17-2 of the communicating vessel 17. The experimenter can know the specific position of the depilatory agent outlet surface according to the position pointed by the arrow on the left end face of the gear switching lever 2. When the depilatory agent outlet surface needs to be switched, the positioning ball 7 is pressed until the positioning ball 7 leaves the positioning hole 17-2, and the gear switching lever 2 is rotated to make the positioning ball 7 continue to slide in the annular groove 17-6 until it bounces into another positioning hole 17-7;
[0040] Under the pressure of the finger, the bellows 10 drives the built-in corrugated tube spring 12 to shrink together. When it shrinks to a certain position, the external force pressing on the bellows 10 is removed, and the bellows 10 returns to the initial position under the action of the built-in corrugated tube spring 12. The bellows 10 is pressed back and forth to relax. Due to the influence of the one-way valve 9, the external gas continuously enters the water storage tank 14 from the central hole of the bellows cover 11 in one direction, and the pressure in the storage tank 14 increases. The depilatory agent in the storage tank 14 flows into the communicating vessel 17 from the water outlet hole on the left side of the storage tank 14 along the second water outlet pipe 16 and the water inlet 17-3. The depilatory agent passes through the U-shaped water-solution channel along the water outlet hole 17-2 of the communicating vessel and the first water outlet pipe 3 and flows into the sponge block corresponding to the side of the prism. The experimenter holds the device and applies the sponge block on this side to the designated position where the animal needs to be depilated. When use is completed, the experimenter rotates the gear switching lever 2 so that the arrow mark points to the side of the prism where the water outlet nozzle 1 is not provided, and the depilatory agent can be closed from flowing out of the device. After that, the cleaning gauze on the side of the prism can be used for cleaning.
Claims
1. A depilatory agent regulating and setting device for animal experiments, characterized in that: The invention comprises a water outlet mechanism, an adjustment mechanism, a water storage tank (14), a pressure mechanism and a shell (15), wherein the water outlet mechanism and the pressure mechanism are respectively mounted at two ends of the shell (15), the adjustment mechanism and the water storage tank (14) are mounted inside the shell (15), the water outlet mechanism comprises water outlet nozzles (1) respectively arranged on three sides of the prism, the three sides of the prism on which the water outlet nozzles (1) are respectively mounted with sponge blocks of different densities, and the side of the prism not on which the water outlet nozzles (1) are mounted with a cleaning gauze, the adjustment structure comprises a gear switching lever (2), a connector (17) and a connecting shaft (18), one end of the gear switching lever (2) is connected to the prism, the other end of the gear switching lever (2) is connected to the connecting shaft (18), the connector (17) is sleeved on the connecting shaft (1 8), the connector (17) is provided with water outlet holes (17-2) respectively connected to the water outlet nozzles (1), the connector (17) is also provided with a water inlet (17-3) connected to the water storage tank (14), the connecting shaft (18) is provided with a water agent flow channel, the water storage tank (14) is connected to a pressure-applying mechanism, and pressure is applied to the water storage tank (14) by the pressure-applying mechanism, so that the depilatory agent in the water storage tank (14) flows into the water agent channel of the connecting shaft (18) through the water inlet (17-3) of the connector (17), and the connecting shaft (18) is driven to rotate by rotating the gear adjustment lever, so that the water agent channel is connected to a water outlet hole (17-2) on the connector (17), so that the depilatory agent in the water agent channel is transmitted to the water outlet nozzle (1) through the water outlet hole (17-2); The coupler (17) is provided with a first inner hole (17-1), a second inner hole (17-4) and a third inner hole (17-5) which are sequentially connected in the axial direction; the inner wall of the first inner hole (17-1) is in contact with the outer surface of the connecting shaft (18); the water outlet holes (17-2) are all connected with the first inner hole (17-1); there is a gap between the inner wall of the second inner hole (17-4) and the outer surface of the connecting shaft (18); the water inlet (17-3) is connected with the second inner hole (17-4); an annular groove (17-6) is machined on the inner wall of the third inner hole (17-5); the coupler (17) is provided with positioning holes (17-7) corresponding to the four side surfaces of the prism respectively; the positioning holes (17-7) are connected with the annular groove (17-6); The liquid agent channel is a U-shaped channel, specifically composed of a first channel hole (18-2) and a second channel hole (18-3) opened on the connecting shaft (18) and connected to each other. The connecting shaft (18) is also provided with a blind hole (18-5) for installing a positioning spring (6). The center lines of the first channel hole (18-2), the second channel hole (18-3) and the blind hole (18-5) are parallel to each other in the same plane. A positioning ball (7) is installed on the top of the positioning spring (6). When the connecting shaft (18) rotates, the positioning spring (6) causes the positioning ball (7) to slide against the annular groove (17-6). When the positioning ball (7) slides and bounces into the positioning hole (17-7), the rotation of the connecting shaft (18) can be restricted, and the liquid agent channel is connected to a water outlet hole (17-2) on the connector (17). A connector (4) is installed on the water outlet hole (17-2), and the connector (4) is connected to the water outlet nozzle (1) via a first water outlet pipe (3). One end of the water storage tank (14) is connected to the water inlet (17-3) on the coupler (17) via a second water outlet pipe (16), and the other end of the water storage tank (14) is connected to a pressure mechanism.
2. A depilatory agent adjustment and setting device for animal experiments according to claim 1, characterized in that: The water storage tank (14) is provided with an end cover (13), the pressure-applying mechanism comprises a bellows (10), a bellows spring (12) is installed in the bellows (10), a bellows cover (11) is installed at one end of the bellows (10), and the other end of the bellows (10) is connected to the end cover (13), a through hole is provided at the center of the end cover (13) and the bellows cover (11), and a one-way valve (9) is installed in the through hole of the end cover (13) and the bellows cover (11), so that gas can only enter the water storage tank (14) from the outside.
3. A depilatory agent adjustment and setting device for animal experiments according to claim 1, characterized in that: A step groove (18-4) is installed at a position between the first channel hole (18-2) and the second channel hole (18-3) on the connecting shaft (18), and at a position between the second channel hole (18-3) and the blind hole (18-5) on the connecting shaft (18). The two step grooves (18-4) correspond to the two ends of the second inner hole (17-4) respectively. A rubber ring (5) is sleeved inside the step groove (18-4), and the outer surface of the rubber ring (5) is in sliding contact with the inner wall of the second inner hole (17-4).
4. A depilatory agent adjustment and setting device for animal experiments according to claim 1, characterized in that: A mounting hole for inserting a gear switching rod (2) is provided at the center of the top of the prism, and a step surface is provided on the gear switching rod (2) so as to axially clamp and position the gear switching rod (2) in the mounting hole.
5. A depilatory agent adjustment and setting device for animal experiments according to claim 1, characterized in that: A cross-shaped boss is provided on the end surface of the gear position switching lever (2) connected to the connecting shaft (18), and a cross-shaped groove (18-1) is provided on the end surface of the connecting shaft (18) connected to the gear position switching lever (2).
6. A depilatory agent adjustment and setting device for animal experiments according to claim 1, characterized in that: The housing (15) comprises an upper housing and a lower housing, the lower housing being provided with a rib plate slot for fixing and installing the coupler (17) and the water storage tank (14), and one end of the upper housing and the lower housing being provided with a thread for connecting and installing the housing cover (8).
7. A depilatory agent adjustment and setting device for animal experiments according to claim 1, characterized in that: An arrow indicator mark is attached to the end surface of the gear position switching lever (2) connected to the prism, and the indicating direction of the arrow indicator mark is parallel to the center line of the blind hole (18-5) on the connecting shaft (18) in the same plane.
Citation Information
Patent Citations
Depilating agent adjusting and setting device for animal experiments
CN212662019U