Dead pig eyeball fixing device based on cornea valve making experiment

Abstract

The invention discloses a dead pig eyeball fixing device based on a cornea valve making experiment, the dead pig eyeball fixing device comprises a base and a fixing block arranged on the base, the end face of the fixing block is provided with a containing hole used for containing an external dead pig eyeball, the base is movably provided with a moving plate, the moving plate is detachably provided with a glass slide, and the glass slide is provided with a fixing hole used for fixing the dead pig eyeball. The adsorption part is used for generating negative pressure adsorption force in the containing hole to fix the dead pig eyeballs, and the synchronizing part is used for being in linkage with the adsorption part to enable the moving plate to slide towards the dead pig eyeballs when the adsorption part operates and enable the glass slide to flatten the cornea surfaces of the dead pig eyeballs. The dead pig eyeball fixing device solves the problems that a traditional dead pig eyeball fixing device is too low in dead pig eyeball fixing strength, and a glass slide needs to be manually moved after the dead pig eyeball is fixed.

Description

Technical Field

[0001] The invention relates to the technical field of corneal flap making experiment auxiliary instruments, in particular to a dead pig eyeball fixing device based on corneal flap making experiment. Background Art

[0002] At present, dead pig eyes are usually used in corneal flap making experiments. Before the corneal flap making experiment, the dead pig eyes need to be fixed. Traditional fixing devices fix the dead pig eyes by means of bolt abutment, soft pad clamping, or air bag clamping and limiting. The dead pig eyes lose their activity and become soft and cushioned. There are many defects in the above fixing methods: for example, the bolt abutment method can easily cause damage to the dead pig eyes or the abutment force is too large, causing the dead pig eyes to deform, and it is easy to have uneven force and cannot effectively support the dead pig eyes; the fixing strength of the dead pig eyes by soft pad clamping is too low, and the dead pig eyes are very likely to shake, loosen or shift during the experiment; the method of fixing the dead pig eyes by air bag expansion is very likely to affect the experimental range and visual range due to the large range of air bag expansion. After the traditional fixing device fixes the dead pig's eyeball, the operator needs to manually move the slide to bring the slide close to the dead pig's eyeball. The whole process is time-consuming and labor-intensive, which greatly affects the progress and accuracy of the experiment. Summary of the invention

[0003] In view of the shortcomings of the existing technology, the present invention provides a dead pig eye fixation device based on the corneal flap making experiment, in order to solve the problem that the traditional dead pig eye fixation device has too low fixation strength for the dead pig eye or uneven force and needs to manually move the slide after the dead pig eye is fixed.

[0004] To achieve the above-mentioned purpose, the present invention provides a dead pig eyeball fixing device based on a corneal flap making experiment, comprising a base and a fixing block arranged on the base, the fixing block end surface being provided with a receiving hole for receiving a dead pig eyeball from the outside, a movable plate being movably arranged on the base, a glass slide being detachably arranged on the movable plate, an adsorption member for generating a negative pressure adsorption force in the receiving hole to fix the dead pig eyeball and a synchronizing member for linking with the adsorption member so that when the adsorption member is in operation, the movable plate slides toward the dead pig eyeball and the glass slide flattens the corneal surface of the dead pig eyeball.

[0005] The advantages of adopting the above technical solution are as follows: when it is necessary to fix the dead pig's eyeball, the operator places the dead pig's eyeball into the receiving hole, and the receiving hole generates a negative pressure adsorption force through the adsorption member to fix the dead pig's eyeball. At the same time, when the receiving hole generates an adsorption force, the adsorption force is located at the bottom of the receiving hole, forming a stable negative pressure space, so that the bottom of the dead pig's eyeball is stably fitted with the bottom wall of the receiving hole and the connection strength is improved, and the dead pig's eyeball is not squeezed, so that the surface of the dead pig's eyeball can be stably in contact with the glass slide after the glass slide moves; when the adsorption member generates a negative pressure adsorption force and adsorbs the dead pig's eyeball, the operation of the adsorption member will cause the synchronous member linked to the adsorption member to operate synchronously, so that the synchronous member drives the moving plate to slide toward the dead pig's eyeball and makes the glass slide contact with the corneal surface of the dead pig's eyeball, thereby facilitating the operator to perform a corneal flap experiment on the dead pig's eyeball; the above technical setting is convenient for the operator to fix the dead pig's eyeball, and the entire fixation and movement of the glass slide are automated, thereby improving the experimental efficiency and experimental accuracy.

[0006] The present invention further arranges: the base is hollow with an inner cavity, the adsorbent comprises a negative pressure cylinder, a small motor, a sliding plate and a piston rod arranged in the inner cavity, the negative pressure cylinder is hollow with a negative pressure cavity, the starting end of the negative pressure cylinder is provided with an adjustment hole along the length direction of the negative pressure cylinder, the adjustment hole is connected with the negative pressure cavity, the starting end of the piston rod is placed in the adjustment cavity and provided with a piston head, the piston head is slidably arranged in the negative pressure cavity, the outer peripheral wall of the piston head is sealed and fitted with the inner peripheral wall of the negative pressure cavity, and a sealing ring is arranged between the outer peripheral wall of the piston head and the inner peripheral wall of the negative pressure cavity, and the end of the piston rod is connected with the negative pressure cavity. The linkage parts are arranged in a linkage coordination manner, the end of the negative pressure cylinder is provided with a first air hole connected with the negative pressure chamber, the bottom of the fixed block is provided with a second air hole, an air pipe is connected between the first air hole and the second air hole, the accommodating hole and the second air hole are connected, a synchronous shaft is connected between the end of the piston rod and the outer wall of the sliding plate, a main gear disk is rotatably arranged in the inner cavity, a tooth groove is opened on the inner wall of the sliding plate along the length direction of the sliding plate, the tooth groove is meshed with the main gear disk, the small motor is arranged on the inner wall of the inner cavity, and the output end of the small motor is coaxially connected with the main gear disk.

[0007] The advantages of adopting the above technical scheme are as follows: when it is necessary to adsorb the dead pig's eyeball, the small motor starts and drives the main gear disc to rotate. Because the main gear disc is meshed with the tooth groove, the rotation of the main gear disc drives the sliding plate to slide. When the sliding plate slides, the end of the piston rod is driven to move synchronously through the synchronous shaft. The movement of the piston rod drives the piston head to move in the negative pressure chamber, so that the negative pressure inside the negative pressure chamber increases, causing the first air hole to suck air into the negative pressure chamber. An air pipe is connected between the first air hole and the second air hole, and the accommodating hole and the second air hole are connected. When the piston head moves toward the adjusting hole, an adsorption force is generated inside the negative pressure chamber and applied to the accommodating hole through the air pipe, thereby generating an adsorption force in the accommodating hole to achieve adsorption of the dead pig's eyeball, thereby improving the stability of the dead pig's eyeball in the accommodating hole, and achieving adsorption through adsorption. Fixation of dead pig eyeballs can avoid deformation or low fixing strength of dead pig eyeballs caused by traditional clamping and limiting structures, and prevent the dead pig eyeballs from shaking or loosening in the receiving hole, as well as failure to effectively support the dead pig eyes to maintain activity, resulting in the accuracy of corneal flap making and experimental efficiency being affected; in the above technology, a small motor is used to realize the automatic movement of the piston rod, that is, the automatic adsorption or stop of adsorption of the dead pig eyeball is realized, so as to realize the automatic fixation of the dead pig eyeball, thereby improving the experimental efficiency; in the above technology, the principle of the combination of the piston rod and the negative pressure cylinder to generate negative pressure adsorption force is similar to the principle of the syringe generating negative pressure adsorption force, which is a prior art, so it will not be described in detail; in the above technology, the small motor is a prior art, so its switch position, structure and function will not be described in detail.

[0008] The present invention further provides that: a plurality of adsorption holes are connected between the accommodating hole and the second air hole, and the plurality of adsorption holes are circumferentially arranged on the inner peripheral wall of the accommodating hole along the axial direction of the accommodating hole.

[0009] The benefits of adopting the above technical solution are: in the above technology, a number of adsorption holes are connected between the accommodating hole and the second air hole, so that when the negative pressure chamber and the trachea generate adsorption force, the number of adsorption holes will generate adsorption force synchronously, and the number of adsorption holes are arranged circumferentially on the inner wall of the accommodating hole along the axial direction of the accommodating hole, that is, the number of adsorption holes are opened around the dead pig's eyeball, so that the adsorption force generated by the number of adsorption holes is located around the dead pig's eyeball, thereby improving the overall adsorption strength of the dead pig's eyeball, thereby improving the stability of the dead pig's eyeball in the accommodating hole.

[0010] The present invention further provides that: the movable plate is symmetrically provided with two through holes, both through holes are threadedly connected with screw rods, and both ends of the screw rods are inserted into the inner cavity and are synchronously matched with the synchronous member.

[0011] The benefits of adopting the above technical solution are: when the adsorption part is running, the synchronization part will run synchronously, and the synchronization part will drive the screw rod to transmit synchronously, and the two screw rods will cooperate with the movable plate through the corresponding through holes respectively. When the position of the screw rod cannot be adjusted and the screw rod rotates, it will drive the movable plate to rise and fall along the height direction of the screw rod, thereby realizing the automatic approach of the slide to or away from the surface of the dead pig's eyeball. In this way, when the piston rod drives the piston head to move and the negative pressure chamber generates adsorption force and the dead pig's eyeball is adsorbed and fixed, the slide will automatically approach the surface of the dead pig's eyeball, which is convenient for the experimenter to conduct subsequent experiments. The whole process is automated, which improves the experimental efficiency and accuracy, and avoids external stress interference that causes the slide to move a distance or interfere with the dead pig's eyeball.

[0012] The present invention is further provided that: the synchronous component includes an auxiliary toothed disc arranged in the inner cavity, the two screw rods are rotatably connected to the bottom wall of the inner cavity, the two screw rods are provided with a slave toothed disc, the two slave toothed discs are arranged in the inner cavity, the auxiliary toothed disc is arranged on the screw rod close to the position of the main toothed disc, the main toothed disc is meshed with the auxiliary toothed disc, and a synchronous belt is provided between the two slave toothed discs.

[0013] The benefits of adopting the above technical solution are: when the main gear disc rotates, the main gear disc and the auxiliary gear disc are engaged, causing the auxiliary gear disc to rotate synchronously. When the auxiliary gear disc rotates, it will drive the corresponding screw rod to rotate. When the corresponding screw rod rotates, its corresponding slave gear disc rotates. There is a synchronous belt between the two slave gear discs, so that when one slave gear disc rotates, the other slave gear disc rotates synchronously, thereby realizing the synchronous rotation of the two screw rods, and then realizing the lifting and lowering of the movable plate. The above-mentioned technical setting can realize the automatic lifting and lowering of the slide, and the whole process is automated, which improves the experimental efficiency and accuracy, and avoids external stress interference that causes the slide to move a distance or interferes with the dead pig's eyeball.

[0014] The present invention further provides that: the number of teeth on the main gear disc is greater than the number of teeth on the auxiliary gear disc.

[0015] The benefit of adopting the above technical solution is that: in the above technology, the number of teeth on the main gear disc is greater than the number of teeth on the auxiliary gear disc, so that when the main gear disc rotates one circle, the auxiliary gear disc rotates several circles, and then after the piston rod moves a specified distance, the moving plate can drive the slide cover to be placed on the dead pig's eyeball, that is, the transmission ratio is achieved through the difference in the number of teeth, thereby ensuring that a small movement of the piston rod can achieve a large movement of the moving plate, and then ensuring that the piston rod will not move significantly, resulting in excessive negative pressure adsorption force to damage the dead pig's eyeball.

[0016] The present invention further provides that: the two ends of the air pipe are respectively threadedly connected with the first air hole and the second air hole.

[0017] The benefits of adopting the above technical solution are: in the above technology, the two ends of the air pipe are respectively threadedly connected to the first air hole and the second air hole, so that the operator can disassemble the air pipe or replace the air pipes of different calibers, so as to replace the air pipes of different calibers according to different negative pressure adsorption force requirements or different dead pig eyeball fixation requirements, thereby improving the experimental scope and practical scope; at the same time, the two ends of the air pipe are respectively threadedly connected to the first air hole and the second air hole to realize the detachable setting of the fixing block on the base, so as to replace the fixing blocks of the accommodating holes with different diameters according to the dead pig eyeballs with different diameters or different negative pressure adsorption force requirements, that is, if it is necessary to better adapt to the soft couch-shaped dead pig eyeballs and support the soft couch-shaped dead pig eyeballs, it is necessary to replace the fixing blocks of the accommodating holes with different diameters, so that the inner wall of the accommodating hole can better fit and support the soft couch-shaped dead pig eyeballs, thereby improving the experimental scope and practical scope.

[0018] The present invention further provides that: a through window is provided on the movable plate, and grooves for inserting a glass slide into the through window are provided on both side walls of the movable plate, and both grooves are connected to the through window.

[0019] The advantages of adopting the above technical solution are as follows: the setting of the through window in the above technology is used to expose the glass slide to ensure that the glass slide can contact the dead pig's eyeball, and the setting of the groove makes it easy for the operator to insert the glass slide into the movable plate and expose the glass slide partially in the through window. The setting of the above technology makes it easy for the operator to replace disposable glass slides, thereby improving experimental efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional view of the present invention;

[0021] Figure 2 for Figure 1 A cross-sectional view of

[0022] Figure 3 A three-dimensional view after removing the base for the present invention;

[0023] Figure 4 A three-dimensional view of the matching state of the moving plate and the synchronous member in the present invention;

[0024] Figure 5 A three-dimensional view of the matching state of the fixing block and the negative pressure cylinder in the present invention;

[0025] Figure 6 for Figure 5 A simplified cross-sectional view along the axis of the negative pressure cylinder;

[0026] Figure 7 for Figure 5 A simplified cross-sectional view along the axis of the fixed block;

[0027] Figure 8 This is a simplified view of the matching state of the main gear plate and the drive motor in the present invention. DETAILED DESCRIPTION

[0028] The present invention provides a dead pig eyeball fixing device based on a corneal flap making experiment, comprising a base 1 and a fixing block 2 arranged on the base 1, wherein the end surface of the fixing block 2 is provided with a receiving hole 21 for receiving a dead pig eyeball from the outside, a moving plate 3 is movably provided on the base 1, and a glass slide 31 is detachably provided on the moving plate 3, and an adsorption member for generating a negative pressure adsorption force in the receiving hole 21 to fix the dead pig eyeball and a synchronizing member for linking with the adsorption member so that the moving plate 3 slides toward the dead pig eyeball when the adsorption member is running and the glass slide 31 flattens the corneal surface of the dead pig eyeball are provided on the base 1, and an inner cavity 11 is opened in the hollow of the base 1, and the adsorption member comprises a negative pressure cylinder 4, a small motor 5, a sliding plate 51 and a piston rod arranged in the inner cavity 11 41, the negative pressure cylinder 4 is hollow and has a negative pressure chamber 42, the starting end of the negative pressure cylinder 4 is provided with an adjustment hole 43 along the length direction of the negative pressure cylinder 4, the adjustment hole 43 is connected to the negative pressure chamber 42, the starting end of the piston rod 41 is placed in the adjustment chamber and is provided with a piston head 411, the piston head 411 is slidably set in the negative pressure chamber 42, the outer peripheral wall of the piston head 411 is sealed and fitted with the inner peripheral wall of the negative pressure chamber 42, and a sealing ring 412 is provided between the outer peripheral wall of the piston head 411 and the inner peripheral wall of the negative pressure chamber 42, the end of the piston rod 41 is linked with the linkage, the end of the negative pressure cylinder 4 is provided with a first air hole 44 connected to the negative pressure chamber 42, the bottom of the fixed block 2 is provided with a second air hole 22, and the first air hole 44 and the second air hole 22 are provided between An air pipe 23 is connected, the accommodating hole 21 is connected with the second air hole 22, a synchronous shaft 511 is connected between the end of the piston rod 41 and the outer wall of the sliding plate 51, a main gear plate 52 is rotatably arranged in the inner cavity 11, and a tooth groove 512 is opened on the inner wall of the sliding plate 51 along the length direction of the sliding plate 51, and the tooth groove 512 is meshed with the main gear plate 52, the small motor 5 is arranged on the inner wall of the inner cavity 11 and the output end of the small motor 5 is coaxially connected with the main gear plate 52, a plurality of adsorption holes 24 are connected between the accommodating hole 21 and the second air hole 22, and the plurality of adsorption holes 24 are circumferentially arranged on the inner peripheral wall of the accommodating hole 21 along the axial direction of the accommodating hole 21, and two through holes 32 are symmetrically arranged on the movable plate 3, and the two through holes 32 are symmetrically arranged on the movable plate 3. A screw rod 33 is threadedly connected in the through hole 32, and the ends of the two screw rods 33 are inserted into the inner cavity 11 and are synchronously matched with the synchronous member. The synchronous member includes a secondary toothed disc 54 arranged in the inner cavity 11, and the two screw rods 33 are rotatably connected to the bottom wall of the inner cavity 11. A slave toothed disc 53 is arranged on the two screw rods 33, and the two slave toothed discs 53 are arranged in the inner cavity 11. The secondary toothed disc 54 is arranged on the screw rod 33 near the main toothed disc 52. The main toothed disc 52 is meshed with the secondary toothed disc 54. A synchronous belt 55 is driven between the two slave toothed discs 53. The number of teeth of the main toothed disc 52 is greater than the number of teeth of the secondary toothed disc 54. The two ends of the air pipe 23 are threadedly connected to the first air hole 44 and the second air hole 22 respectively.The movable plate 3 is provided with a through window 34, and both side walls of the movable plate 3 are provided with grooves 35 for the slide glass 31 to be placed in the through window 34, and both grooves 35 are connected to the through window 34.

[0029] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention shall be defined by the attached claims and their equivalents.

Claims

1. A dead pig eyeball fixing device based on corneal flap making experiment, characterized by: The invention comprises a base and a fixed block arranged on the base, wherein an accommodating hole for accommodating an eyeball of a dead pig from outside is opened on the end surface of the fixed block, a movable plate is movably arranged on the base, a glass slide is detachably arranged on the movable plate, an adsorption member for generating a negative pressure adsorption force in the accommodating hole to fix the eyeball of the dead pig and a synchronizing member for linking with the adsorption member so that when the adsorption member is in operation, the movable plate slides toward the direction of the eyeball of the dead pig and the glass slide flattens the corneal surface of the eyeball of the dead pig.

2. The dead pig eyeball fixing device based on corneal flap making experiment according to claim 1 is characterized by: The base is hollow and has an inner cavity. The adsorbent includes a negative pressure cylinder, a small motor, a sliding plate and a piston rod arranged in the inner cavity. The negative pressure cylinder is hollow and has a negative pressure cavity. The starting end of the negative pressure cylinder is provided with an adjustment hole along the length direction of the negative pressure cylinder. The adjustment hole is connected with the negative pressure cavity. The starting end of the piston rod is placed in the adjustment cavity and is provided with a piston head. The piston head is slidably arranged in the negative pressure cavity. The outer peripheral wall of the piston head is sealed and fitted with the inner peripheral wall of the negative pressure cavity. A sealing ring is arranged between the outer peripheral wall of the piston head and the inner peripheral wall of the negative pressure cavity. The end of the piston rod is connected with the linkage member. The invention discloses a dynamic matching arrangement, wherein a first air hole connected with the negative pressure chamber is arranged at the end of the negative pressure cylinder, a second air hole is arranged at the bottom of the fixed block, an air pipe is connected between the first air hole and the second air hole, and the accommodating hole and the second air hole are connected, a synchronous shaft is connected between the end of the piston rod and the outer wall of the sliding plate, a main gear disk is rotatably arranged in the inner cavity, a tooth groove is opened on the inner wall of the sliding plate along the length direction of the sliding plate, the tooth groove is meshed with the main gear disk, the small motor is arranged on the inner wall of the inner cavity, and the output end of the small motor is coaxially connected with the main gear disk.

3. The dead pig eyeball fixing device based on corneal flap making experiment according to claim 2 is characterized by: A plurality of adsorption holes are connected between the accommodating hole and the second air hole, and the plurality of adsorption holes are circumferentially arranged on the inner peripheral wall of the accommodating hole along the axial direction of the accommodating hole.

4. The dead pig eyeball fixing device based on corneal flap making experiment according to claim 2 is characterized by: The movable plate is symmetrically provided with two through holes, both through holes are threadedly connected with screw rods, and both ends of the screw rods are inserted into the inner cavity and synchronously matched with the synchronous member.

5. The dead pig eyeball fixing device based on corneal flap making experiment according to claim 4 is characterized by: The synchronizer includes an auxiliary toothed disc arranged in the inner cavity, the two screw rods are rotatably connected to the bottom wall of the inner cavity, the two screw rods are provided with a slave toothed disc, the two slave toothed discs are arranged in the inner cavity, the auxiliary toothed disc is arranged on the screw rod close to the main toothed disc, the main toothed disc is meshed with the auxiliary toothed disc, and a synchronous belt is provided between the two slave toothed discs.

6. The dead pig eyeball fixing device based on corneal flap making experiment according to claim 5 is characterized by: The number of teeth on the main gear disc is greater than the number of teeth on the auxiliary gear disc.

7. The dead pig eyeball fixing device based on corneal flap making experiment according to claim 2 is characterized by: The two ends of the air pipe are respectively threadedly connected with the first air hole and the second air hole.

8. The dead pig eyeball fixing device based on corneal flap making experiment according to claim 1 is characterized by: The movable plate is provided with a through window, and both side walls of the movable plate are provided with grooves for the glass slide to be placed in the through window, and both grooves are connected to the through window.

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