CN220773818U - Comprehensive tear channel teaching aid - Google Patents
Comprehensive tear channel teaching aid Download PDFInfo
- Publication number
- CN220773818U CN220773818U CN202322485227.7U CN202322485227U CN220773818U CN 220773818 U CN220773818 U CN 220773818U CN 202322485227 U CN202322485227 U CN 202322485227U CN 220773818 U CN220773818 U CN 220773818U
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- Prior art keywords
- lacrimal
- nasolacrimal duct
- canaliculus
- teaching aid
- water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 64
- 210000004083 nasolacrimal duct Anatomy 0.000 claims abstract description 58
- 238000007789 sealing Methods 0.000 claims abstract description 28
- 239000011664 nicotinic acid Substances 0.000 claims abstract description 27
- 238000003860 storage Methods 0.000 claims abstract description 16
- 210000004279 orbit Anatomy 0.000 claims abstract description 15
- 210000005252 bulbus oculi Anatomy 0.000 claims abstract description 14
- 241000083513 Punctum Species 0.000 claims description 28
- 238000003825 pressing Methods 0.000 claims description 22
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 210000001508 eye Anatomy 0.000 claims description 2
- 208000031481 Pathologic Constriction Diseases 0.000 abstract description 11
- 230000036262 stenosis Effects 0.000 abstract description 11
- 208000037804 stenosis Diseases 0.000 abstract description 11
- 206010011844 Dacryocystitis Diseases 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 description 8
- 238000011010 flushing procedure Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- 230000002262 irrigation Effects 0.000 description 7
- 238000003973 irrigation Methods 0.000 description 7
- 229910003460 diamond Inorganic materials 0.000 description 6
- 239000010432 diamond Substances 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 5
- 206010010356 Congenital anomaly Diseases 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- 206010061218 Inflammation Diseases 0.000 description 3
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 230000004054 inflammatory process Effects 0.000 description 3
- 210000000537 nasal bone Anatomy 0.000 description 3
- 210000003928 nasal cavity Anatomy 0.000 description 2
- 206010062575 Muscle contracture Diseases 0.000 description 1
- 240000007643 Phytolacca americana Species 0.000 description 1
- 235000009074 Phytolacca americana Nutrition 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 229940088710 antibiotic agent Drugs 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 201000005471 chronic dacryocystitis Diseases 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 208000006111 contracture Diseases 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000002919 epithelial cell Anatomy 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 208000000617 lacrimal duct obstruction Diseases 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000004877 mucosa Anatomy 0.000 description 1
- 210000003097 mucus Anatomy 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 230000000474 nursing effect Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000028327 secretion Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
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- Prostheses (AREA)
Abstract
The utility model provides a comprehensive tear teaching aid, which comprises a mounting frame and a simulated tear duct, wherein a bionic eye socket is arranged on the mounting frame, the simulated tear duct comprises an upper lacrimal canaliculus, a lower lacrimal canaliculus, a lacrimal header pipe and a nasolacrimal duct, a guide sliding slot which is obliquely arranged downwards from the nasolacrimal duct to the lower part of a bionic eyeball is arranged on the mounting frame, the nasolacrimal duct can be slidably arranged in the guide sliding slot, and a fixing component is also arranged on the nasolacrimal duct; the upper lacrimal canaliculus, the lower lacrimal canaliculus and the lacrimal manifold are all provided with water stopping clamps, the top of the lacrimal sac is connected with a water storage sac, the joint of the water storage sac and the lacrimal sac is provided with a water valve, the water storage sac is provided with a water filling port, and the bottom end of the nasolacrimal duct is buckled with a sealing cover. The teaching aid is simple in structure, can simulate various scenes such as blockage of lacrimal canaliculus, blockage of lacrimal manifold, blockage or stenosis of nasolacrimal duct, dacryocystitis and lacrimal passage sounding, and is more beneficial to teaching activities.
Description
Technical Field
The utility model relates to the field of nursing teaching models, in particular to a comprehensive tear teaching aid.
Background
The lacrimal passage anatomically includes a punctum, a lacrimal sac and a nasolacrimal duct, with the upper end opening at the punctum of the inner lacrimal nipple of the eye and the lower end opening into the lower nasolacrimal passage. Wherein, the diameter of punctum, lacrimal canaliculus and lacrimal manifold is narrow and thin, the position is shallow, and the blockage is easily caused by factors such as inflammation, trauma and the like; the lower end of the nasolacrimal duct is blocked by anatomical stenosis Duan Yi affected by nasal lesions. The lacrimal passage flushing technology is a technical operation of injecting flushing liquid into the lacrimal passage, checking whether the lacrimal passage is unobstructed or not, judging the blocked part and dredging. Can be used as diagnosis technology and therapeutic method. Stenosis or blockage of punctum, stenosis or occlusion of nasolacrimal duct, etc. are common diseases of lacrimal passage, and can be treated by lacrimal passage sounding technique. The technology of probing the lacrimal passage of an adult can be used for treating lacrimal passage diseases such as lacrimal passage mucosa adhesion, lacrimal passage stenosis and blockage caused by inflammation. The technology of the infant lacrimal passage sounding is used for treating lacrimal passage diseases caused by the blocking of a nasolacrimal duct by congenital residual membranes or the blocking of a tube cavity by epithelial cell debris. The lacrimal passage irrigation can check whether the lacrimal passage is unobstructed; primarily determining the blocked position of the lacrimal passage; detecting whether the tear duct is congenital abnormal; drainage, removing pus and mucus accumulated in lacrimal passage, and injecting antibiotics into lacrimal passage to control inflammation spreading. When performing lacrimal passage irrigation, different blocking conditions and different feedback are obtained. Judging whether the blocking part exists according to the flow direction of the flushing liquid. Summarizing, the first case: the flushing has no resistance, and the liquid smoothly enters the nasolacrimal duct, which indicates that the lacrimal passage is unobstructed; second case: the flushing liquid completely returns from the injection primary path and is blocked by lacrimal canaliculus; third case: irrigation fluid is injected from the inferior punctum, and if the nasal bone is not accessible and regurgitated by the superior punctum, it is blocked by the lacrimal canaliculus; fourth case: irrigation fluid is injected from the lower punctum, can reach the nasal bone, and is reversed from the upper punctum, thus being blocked by the nasolacrimal duct; fifth case: the flushing has resistance, part returns from the punctum, and the part flows into the nasal cavity to narrow the nasolacrimal duct; sixth case: after the irrigant is injected from the inferior punctum into the inferior lacrimal canaliculus, the irrigant refluxes from the superior punctum with mucous secretions, which are a common complication of chronic dacryocystitis for nasolacrimal duct obstruction.
At present, in order to improve the operation and observation experience of medical staff, the medical staff usually wash each other, which is not beneficial to obviously recognizing various blockage conditions and can cause the damage to the health of the medical staff; the lacrimal passage flushing device in the prior art is simple in structure, single in simulation condition and incapable of playing a role in teaching well.
Disclosure of Invention
In view of the above, the present utility model aims to provide a comprehensive tear teaching aid to solve the above problems.
In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:
a comprehensive tear teaching aid comprises a mounting frame and a simulated tear channel, wherein a bionic eyeball is arranged on the mounting frame, and a bionic eye socket is arranged on the periphery of the bionic eyeball; the simulated lacrimal passage comprises an upper lacrimal canaliculus, a lower lacrimal canaliculus, a lacrimal header pipe and a nasolacrimal duct, one ends of the upper lacrimal canaliculus and the lower lacrimal canaliculus respectively penetrate through a bionic eye socket to form an upper lacrimal punctum and a lower lacrimal punctum, the other ends of the upper lacrimal canaliculus and the lower lacrimal canaliculus are connected with the lacrimal header pipe, the lacrimal header pipe is connected with the nasolacrimal duct, and the upper end of the nasolacrimal duct is a lacrimal sac; the mounting frame is provided with a guide sliding slot which is obliquely downwards arranged from the nasolacrimal duct to the lower part of the bionic eyeball, the nasolacrimal duct is slidably arranged in the guide sliding slot, and the nasolacrimal duct is also provided with a fixing component; the upper lacrimal canaliculus, the lower lacrimal canaliculus and the lacrimal manifold are all provided with water stopping clamps, the top of the lacrimal sac is connected with a water storage sac, the joint of the water storage sac and the lacrimal sac is provided with a water valve, the water storage sac is provided with a water filling port, and the bottom end of the nasolacrimal duct is buckled with a sealing cover.
Further, the water stop clamp comprises a shell, a cover plate, a pressing plate and a screw rod, wherein the shell is cylindrical, a cylindrical groove is formed in the shell, one end of the shell is opened, and the pressing plate is detachably arranged; the upper lacrimal canaliculus, the lower lacrimal canaliculus or the lacrimal manifold penetrate through the shell along the radial direction of the shell, a pressing plate for extruding the upper lacrimal canaliculus, the lower lacrimal canaliculus or the lacrimal manifold is arranged in the cylindrical groove, and the pressing plate is also connected with a screw rod which penetrates out of the pressing plate and is in threaded connection with the pressing plate.
Further, the fixed component comprises a moving rod and a fixed nut, the moving rod is fixedly connected with the side wall of the nasolacrimal duct, and the moving rod passes through the guide sliding seam and is in threaded connection with the fixed nut.
Further, the bionic eye socket is diamond-shaped, a drain hole is formed in the vertex angle below the diamond-shaped eye socket, a first water receiving groove is formed below the drain hole, and a first slot for inserting the first water receiving groove is formed in the mounting frame.
Further, a second water receiving groove is arranged below the nasolacrimal duct, and a second slot for inserting the second water receiving groove is arranged on the mounting frame.
Further, the mounting bracket comprises a vertical plate and a bottom support, the vertical plate is vertically fixed on the bottom support, and the bionic eyeball, the bionic eye socket and the simulated lacrimal passage are all arranged on the vertical plate.
Further, the joint of the vertical plate and the bottom support is also provided with a reinforcing rib.
Further, a sealing plug is arranged at the water inlet of the water storage bag.
Further, the sealing cover is fixedly connected with the nasolacrimal duct through a connecting strip.
Further, a through hole is formed in the sealing cover, a baffle plate for shielding the through hole is rotatably arranged on the inner side of the sealing cover, and a rotary knob for rotating the baffle plate is arranged on the outer side of the sealing cover.
Compared with the prior art, the comprehensive tear teaching aid has the following advantages:
the comprehensive tear teaching aid provided by the utility model has a simple structure, can simulate various scenes such as blockage of lacrimal canaliculus, blockage of lacrimal manifold, blockage or stenosis of nasolacrimal duct, dacryocystitis and tear duct sounding, and is more beneficial to teaching activities.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:
FIG. 1 is a schematic diagram of a comprehensive tear teaching aid according to an embodiment of the present utility model;
FIG. 2 is a front view of a comprehensive tear teaching aid according to an embodiment of the present utility model;
FIG. 3 is a side view of a comprehensive tear path teaching aid according to an embodiment of the present utility model;
FIG. 4 is a perspective view of a comprehensive tear teaching aid according to an embodiment of the present utility model;
FIG. 5 is an enlarged view of part A of the integrated tear teaching aid according to an embodiment of the present utility model;
fig. 6 is a schematic view of the structure of a nasolacrimal duct according to an embodiment of the present utility model.
Reference numerals illustrate:
1. a riser; 2. a bottom support; 3. reinforcing ribs; 4. a bionic eyeball; 5. bionic eye sockets; 6. a drain hole; 7. a first water receiving tank; 8. a first slot; 9. the lacrimal canaliculus; 10. the lacrimal canaliculus; 11. a tear manifold; 12. a water stop clamp; 13. ascending punctum; 14. a punctum; 15. nasolacrimal duct; 16. a water storage bag; 17. sealing the plugs; 18. a water valve; 19. sealing cover; 20, a step of; a second slot; 21. a second water receiving tank; 22. guiding the sliding joint; 23. a moving rod; 24. a fixing nut; 25. a housing; 26. a cylindrical groove; 27. a cover plate; 28. a pressing plate; 29. a screw; 30. a jack; 31. inserting a column; 32. a through hole; 33. a baffle; 34. a turning button; 35. and (5) connecting strips.
Detailed Description
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.
The utility model will be described in detail below with reference to the drawings in connection with embodiments.
As shown in fig. 1, a comprehensive tear teaching aid comprises a mounting frame and a simulated tear channel, wherein a bionic eyeball 4 is arranged on the mounting frame, and a bionic eye socket 5 is arranged on the periphery of the bionic eyeball 4; the simulated lacrimal passage comprises an upper lacrimal canaliculus 9, a lower lacrimal canaliculus 10, a lacrimal manifold 11 and a nasolacrimal duct 15, one ends of the upper lacrimal canaliculus 9 and the lower lacrimal canaliculus 10 respectively penetrate through the bionic eye socket 5 to form an upper lacrimal punctum 13 and a lower lacrimal punctum 14, the other ends of the upper lacrimal canaliculus 9 and the lower lacrimal canaliculus 10 are connected with the lacrimal manifold 11, the lacrimal manifold 11 is connected with the nasolacrimal duct 15, and the upper end of the nasolacrimal duct 15 is a lacrimal sac; a guide sliding slot 22 which is obliquely downwards arranged from the nasolacrimal duct 15 to the lower part of the bionic eyeball 4 is arranged on the mounting frame, the nasolacrimal duct 15 is slidably arranged in the guide sliding slot 22, and a fixing component is also arranged on the nasolacrimal duct 15; the upper lacrimal canaliculus 9, the lower lacrimal canaliculus 10 and the lacrimal header 11 are all provided with a water stop clamp 12, the top of the lacrimal sac is connected with a water storage sac 16, the joint of the water storage sac 16 and the lacrimal sac is provided with a water valve 18, the water storage sac 16 is provided with a water inlet, and the bottom end of the nasolacrimal canal 15 is buckled with a sealing cover 19.
The comprehensive lacrimal passage teaching aid has a simple structure, can simulate various scenes such as blockage of lacrimal canaliculus, blockage of lacrimal manifold, blockage or stenosis of nasolacrimal duct, dacryocystitis and detection of lacrimal passage of infants, and is more beneficial to teaching activities.
Scene one: no blockage
If the flushing liquid has no resistance, the liquid flows out smoothly through the nasolacrimal duct, which indicates that the lacrimal passage is unobstructed and all places are unobstructed.
Scene II: for the upper lacrimal canaliculus and the lower lacrimal canaliculus
The upper lacrimal canaliculus 9 or the lower lacrimal canaliculus 10 are respectively clamped by a water stop clamp, so that the lacrimal canaliculus is blocked.
Irrigation fluid injected into the lacrimal canaliculus through the superior 13 or inferior 14 punctum indicates a corresponding obstruction of the lacrimal canaliculus if the irrigation fluid is returned from the punctum.
Scene III: for lacrimal manifold
The water stop clamp is used for clamping the lacrimal manifold, so that the lacrimal manifold is blocked.
Irrigation fluid is injected from the inferior punctum into the inferior lacrimal canaliculus and then flows back from the superior punctum, indicating blockage of the lacrimal manifold.
Scene four: obstruction or stenosis of nasolacrimal duct
The sealing cover is completely blocked at the lower end of the nasolacrimal duct, or is in a semi-masking state.
By injecting irrigant at the inferior punctum, part of the irrigant returns from the punctum and part flows into the nasal cavity, illustrated as a nasolacrimal duct stenosis; all return from the punctum, indicated as nasolacrimal duct blockage.
Scene five: dacryocystitis (dacryocystitis)
The reservoir contains a colored liquid, and when it is desired to produce dacryocystitis, the valve is opened and the colored liquid is injected into the nasolacrimal duct.
After this, the irrigant fluid is infused from the inferior punctum into the inferior lacrimal canaliculus, and the irrigant fluid flows back from the superior punctum, with the colored fluid being dacryocystitis.
Scene six: lacrimal passage sounding
For neonates, the most common cause of lacrimal obstruction is incomplete development of the lower segment of the lacrimal passage, and the residual Hasner valve blocks the lacrimal passage, in part due to congenital anomalies in the congenital lacrimal passage or skeletal anomalies surrounding the lacrimal passage.
Opening each water stop clamp, buckling the sealing cover, adjusting the fixing assembly to enable the nasolacrimal duct 15 to slide in the guide sliding seam, enabling the probe to sequentially transversely pass through the lacrimal canaliculus and the lacrimal manifold until the probe reaches the lacrimal sac and is propped against the side wall of the lacrimal sac, and enabling the probe to be simulated to touch the nasal bone, then pushing the nasolacrimal duct to move obliquely downwards along the guide sliding seam, simulating contracture or extension of a human body during needle insertion, so that the probe stretches into the nasolacrimal duct and pokes the sealing cover, and the sealing cover is equivalent to a Hasner valve at the moment.
For adults, there is no Hasner valve, and the lacrimal passage probing is the same as described above, except that a sealing cap is not required to be fastened to simulate the Hasner valve.
As shown in fig. 5, the water stop clip 12 comprises a housing 25, a cover plate 27, a pressing plate 28 and a screw 29, wherein the housing 25 is cylindrical, a cylindrical groove 26 is formed in the housing 25, and one end of the housing 25 is opened and the pressing plate 28 is detachably arranged; the upper lacrimal canaliculus 9, the lower lacrimal canaliculus 10 or the lacrimal manifold 11 passes through the shell 25 along the radial direction of the shell 25, a pressing plate 28 for pressing the upper lacrimal canaliculus 9, the lower lacrimal canaliculus 10 or the lacrimal manifold 11 is arranged in the cylindrical groove 26, the pressing plate 28 is also connected with a screw 29, and the screw 29 penetrates out of the pressing plate 28 and is in threaded connection with the pressing plate 28.
Specifically, the shell is provided with a plug post, and the cover plate is provided with a jack which can be sleeved on the plug post.
The pressing plate can press the lacrimal canaliculus or the lacrimal manifold by screwing the screw rod, so that the lacrimal canaliculus or the lacrimal manifold is blocked; the lacrimal canaliculus or the lacrimal manifold can be unobstructed by reversely twisting the screw rod.
The shell can be made of transparent materials, so that the extrusion condition of the pressing plate on the lacrimal canaliculus or the lacrimal manifold can be observed conveniently.
Illustratively, as shown in FIG. 3, the securing assembly includes a travel bar 23 and a securing nut 24, the travel bar 23 being fixedly attached to the sidewall of the nasolacrimal duct 15, the travel bar 23 passing through the guide slot 22 and being threadably connected to the securing nut 24.
The fixing nut can be screwed down to fix the position of the nasolacrimal duct, and the nasolacrimal duct can be moved by properly unscrewing the fixing nut.
The bionic eye socket 5 is in a diamond shape, a drain hole 6 is formed in the vertex angle of the lower portion of the diamond, a first water receiving groove 7 is formed below the drain hole 6, and a first slot 8 for inserting the first water receiving groove 7 is formed in the mounting frame. The drain hole is located the below of diamond, and the lateral wall of diamond plays the effect of water conservancy diversion, and diamond structure makes water gathering in the below of diamond simultaneously, more is favorable to the collection of water, and in last being discharged into first water receiving tank through the drain hole.
Illustratively, a second water receiving channel 21 is provided below the nasolacrimal duct 15, and a second slot 20 for inserting the second water receiving channel 21 is provided on the mounting bracket.
The 2 water receiving tanks are convenient for collect the water that flows, can keep operating environment's dry clean and tidy, and 2 water receiving tanks insert simultaneously and establish in the slot, the installation and the dismantlement of water receiving tank of being convenient for.
Illustratively, the mounting frame comprises a vertical plate 1 and a bottom support 2, wherein the vertical plate 1 is vertically fixed on the bottom support 2, and a bionic eyeball 4, a bionic eye socket 5 and a simulated lacrimal passage are all arranged on the vertical plate 1.
Specifically, the first slot and the second slot are both horizontally arranged on the front surface of the vertical plate.
Specifically, the joint of the vertical plate 1 and the bottom bracket 2 is also provided with a reinforcing rib 3.
Illustratively, a sealing plug 17 is provided at the water inlet of the reservoir 16. Before use, the water with color can be supplied to the water storage bag through the water supply port, and then the sealing plug is arranged at the water supply port.
Illustratively, the seal cap 19 is fixedly attached to the nasolacrimal duct 15 by a connecting strip 35 to prevent loss of the seal cap.
Illustratively, the sealing cover 19 is provided with a through hole 32, a baffle 33 for shielding the through hole 32 is rotatably arranged on the inner side of the sealing cover 19, and a knob 34 for rotating the baffle 33 is arranged on the outer side of the sealing cover 19.
The baffle can be rotated to enable the baffle to partially or completely shield the through hole, so that the blocking or the stenosis of the nasolacrimal duct can be simulated, and the stenosis degree can be adjusted by adjusting the shielding area of the baffle.
Specifically, the through holes are sector-shaped, the sealing cover is circular, and a plurality of through holes are uniformly distributed around the circle center of the sealing cover.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (10)
1. A comprehensive tear teaching aid, which is characterized in that: the bionic eye comprises a mounting frame and a simulated lacrimal passage, wherein a bionic eyeball is arranged on the mounting frame, and a bionic eye socket is arranged on the periphery of the bionic eyeball; the simulated lacrimal passage comprises an upper lacrimal canaliculus, a lower lacrimal canaliculus, a lacrimal header pipe and a nasolacrimal duct, one ends of the upper lacrimal canaliculus and the lower lacrimal canaliculus respectively penetrate through a bionic eye socket to form an upper lacrimal punctum and a lower lacrimal punctum, the other ends of the upper lacrimal canaliculus and the lower lacrimal canaliculus are connected with the lacrimal header pipe, the lacrimal header pipe is connected with the nasolacrimal duct, and the upper end of the nasolacrimal duct is a lacrimal sac; the mounting frame is provided with a guide sliding slot which is obliquely downwards arranged from the nasolacrimal duct to the lower part of the bionic eyeball, the nasolacrimal duct is slidably arranged in the guide sliding slot, and the nasolacrimal duct is also provided with a fixing component; the upper lacrimal canaliculus, the lower lacrimal canaliculus and the lacrimal manifold are all provided with water stopping clamps, the top of the lacrimal sac is connected with a water storage sac, the joint of the water storage sac and the lacrimal sac is provided with a water valve, the water storage sac is provided with a water filling port, and the bottom end of the nasolacrimal duct is buckled with a sealing cover.
2. The integrated tear path teaching aid of claim 1, wherein: the water stop clamp comprises a shell, a cover plate, a pressing plate and a screw rod, wherein the shell is cylindrical, a cylindrical groove is formed in the shell, one end of the shell is opened, and the pressing plate is detachably arranged; the upper lacrimal canaliculus, the lower lacrimal canaliculus or the lacrimal manifold penetrate through the shell along the radial direction of the shell, a pressing plate for extruding the upper lacrimal canaliculus, the lower lacrimal canaliculus or the lacrimal manifold is arranged in the cylindrical groove, and the pressing plate is also connected with a screw rod which penetrates out of the pressing plate and is in threaded connection with the pressing plate.
3. The integrated tear path teaching aid of claim 1, wherein: the fixed component comprises a movable rod and a fixed nut, the movable rod is fixedly connected with the side wall of the nasolacrimal duct, and the movable rod passes through the guide sliding seam and is in threaded connection with the fixed nut.
4. The integrated tear path teaching aid of claim 1, wherein: the bionic eye socket is diamond-shaped, a drain hole is formed in the vertex angle below the diamond-shaped, a first water receiving groove is formed below the drain hole, and a first slot for inserting the first water receiving groove is formed in the mounting frame.
5. The integrated tear path teaching aid of claim 1, wherein: the lower part of the nasolacrimal duct is provided with a second water receiving groove, and the mounting rack is provided with a second slot for inserting the second water receiving groove.
6. The integrated tear path teaching aid of claim 1, wherein: the mounting bracket includes riser and collet, and the riser is vertical to be fixed on the collet, and bionical eyeball, bionical eye socket and simulated lacrimal passage all set up on the riser.
7. The integrated tear path teaching aid of claim 6, wherein: reinforcing ribs are further arranged at the joint of the vertical plate and the bottom support.
8. The integrated tear path teaching aid of claim 1, wherein: the water inlet of the water storage bag is provided with a sealing plug.
9. The integrated tear path teaching aid of claim 1, wherein: the sealing cover is fixedly connected with the nasolacrimal duct through a connecting strip.
10. The integrated tear path teaching aid of claim 1, wherein: the sealing cover is provided with a through hole, the inner side of the sealing cover is rotationally provided with a baffle plate for shielding the through hole, and the outer side of the sealing cover is provided with a rotary knob for rotating the baffle plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322485227.7U CN220773818U (en) | 2023-09-13 | 2023-09-13 | Comprehensive tear channel teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322485227.7U CN220773818U (en) | 2023-09-13 | 2023-09-13 | Comprehensive tear channel teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220773818U true CN220773818U (en) | 2024-04-12 |
Family
ID=90614626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322485227.7U Active CN220773818U (en) | 2023-09-13 | 2023-09-13 | Comprehensive tear channel teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220773818U (en) |
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2023
- 2023-09-13 CN CN202322485227.7U patent/CN220773818U/en active Active
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