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CN-122024570-A - Lacrimal passage irrigation teaching model

CN122024570ACN 122024570 ACN122024570 ACN 122024570ACN-122024570-A

Abstract

The invention relates to the technical field of medical teaching appliances, in particular to a lacrimal passage flushing teaching model which comprises an eye model, an on-off mechanism and an adjusting mechanism, wherein the eye model is provided with a lacrimal duct and a nasolacrimal duct, the on-off mechanism is arranged on the lacrimal duct and is used for controlling the lacrimal duct to be in a communicating or blocking state, the adjusting mechanism comprises an annular shell arranged at the lower side of the nasolacrimal duct, an elastic rubber cylinder communicated with a nasolacrimal duct channel is arranged in the middle of the annular shell, a plurality of circumferentially distributed elastic sheets are arranged at the bottom of the annular shell, the upper ends of the elastic sheets are obliquely arranged towards the axis of the elastic rubber cylinder, and a sliding ring used for pushing the elastic sheets to move is longitudinally arranged in the annular shell.

Inventors

  • HE JIFANG
  • WU CHUNLAN
  • LEI CAIFENG

Assignees

  • 中国人民解放军陆军特色医学中心

Dates

Publication Date
20260512
Application Date
20260325

Claims (9)

  1. 1. A lacrimal passage irrigation teaching model, comprising: An eye model (1), the eye model (1) being provided with a lacrimal duct (11) and a nasolacrimal duct (12); The on-off mechanism (2) is arranged on the lacrimal duct (11) and is used for controlling the lacrimal duct (11) to be in a communicating or blocking state; Adjustment mechanism (3), including annular shell (31) that nasolacrimal duct (12) downside set up, annular shell (31) mid-mounting has with the elasticity packing element (32) of nasolacrimal duct (12) passageway intercommunication, a plurality of circumference distribution's elastic sheet (33) are installed to annular shell (31) bottom, a plurality of elastic sheet (33) upper end is towards the axis slope setting of elasticity packing element (32), longitudinal sliding mounting has sliding ring (34) that are used for promoting the motion of a plurality of elastic sheet (33) in annular shell (31).
  2. 2. The lacrimal passage irrigation teaching model according to claim 1, wherein the lacrimal duct (11) comprises two vertically distributed lacrimal canaliculus (111) and a lacrimal header pipe (112); The number of the on-off mechanisms (2) is three, and the on-off mechanisms are respectively arranged on the two lacrimal canaliculus (111) and the lacrimal header pipe (112).
  3. 3. The lacrimal passage irrigation teaching model according to claim 2, wherein the on-off mechanism (2) comprises a rectangular frame (21), and an extrusion block (22) for plugging the lacrimal duct (11) is slidably arranged in the rectangular frame (21).
  4. 4. A lacrimal passage irrigation teaching model according to claim 3, wherein the eye model (1) is further provided with an operating mechanism (4); The operating mechanism (4) comprises a shell (41), a sliding block (42) is arranged in the shell (41) in an axial sliding manner along the tear manifold (112), a push rod (221) extending into the shell (41) is arranged on the extrusion block (22), a first elastic piece (222) is arranged between the push rod (221) and the rectangular frame (21), and an inclined plane is machined on one side, close to the push rod (221), of the sliding block (42); When the sliding block (42) is dislocated with the ejector rod (221), the first elastic piece (222) pushes the extrusion block (22) away from the lacrimal duct (11), and when the sliding block (42) is aligned with the ejector rod (221), the extrusion block (22) extrudes the lacrimal duct (11) to seal the lacrimal duct.
  5. 5. The lacrimal passage irrigation teaching model according to claim 4, wherein the annular shell (31) is fixedly provided with a circular ring (35), a threaded section is machined on the outer surface of the circular ring (35), the inner side of the slip ring (34) is in threaded connection with the threaded section on the outer surface of the circular ring (35), a gear ring (36) is rotatably arranged at the top of the annular shell (31), and the lower side of the gear ring (36) is connected with the circular ring (35) through a telescopic rod (37).
  6. 6. The lacrimal passage irrigation teaching model according to claim 5, wherein a first gear (43) meshed with the gear ring (36) is rotatably mounted at the bottom of the housing (41), and a rack (44) corresponding to the first gear (43) is connected to the bottom of the sliding block (42).
  7. 7. The lacrimal passage irrigation teaching model according to claim 6, wherein a pull rod (45) is mounted on the side wall of the sliding block (42), and the pull rod (45) extends out of the shell (41) and is connected with a handle (46).
  8. 8. The lacrimal passage irrigation teaching model according to claim 1, wherein a first drainage tube (13) is connected to the bottom of the nasolacrimal duct (12), and a first measuring cylinder (14) is connected to the lower end of the first drainage tube (13).
  9. 9. The lacrimal passage irrigation teaching model according to claim 8, wherein a sliding rod (5) is slidably mounted at one end of the shell (41) close to the lacrimal canaliculus (111), a second elastic piece (51) is arranged between the sliding rod (5) and the shell (41), one end of the sliding rod (5) stretches into the shell (41), a second drainage tube (52) is fixed at the other end of the sliding rod (5), a plugging head matched with the lacrimal canaliculus (111) is fixed at the upper end of the second drainage tube (52), and a second measuring cylinder (53) is connected at the lower end of the second drainage tube (52).

Description

Lacrimal passage irrigation teaching model Technical Field The invention relates to the technical field of medical teaching appliances, in particular to a lacrimal passage irrigation teaching model. Background Lacrimal irrigation is a common clinical care procedure for ophthalmology, primarily to inject solution into the lacrimal passage from a punctum needle with a blunt needle, thereby assisting a physician in diagnosing lacrimal passage-related disorders and preoperative routine examination of the inner eye. The prior art CN220290328U discloses lacrimal passage simulation teaching equipment, which comprises a head model, a lacrimal duct box and a lacrimal passage part, wherein the head model comprises a base, a rear head part arranged on the base and a face part hinged on the rear head part, the lacrimal duct box is detachably connected to the rear head part, at least one installation position is arranged in the lacrimal duct box, and the lacrimal passage part is detachably connected to the installation position. Although the device can simulate the sense of falling air after detecting the blocking part, avoids the risk of wound and even inflammation spreading caused by blind needle insertion during exercise, but can not adjust the stenosis at any time in the simulation of nasolacrimal duct stenosis, the simulation process is inflexible, and very uncomfortable learning experience is brought to a user, so that an eye model for simulating eye lacrimal passage flushing is needed to solve the problems. Disclosure of Invention Aiming at the defects in the prior art, the invention provides a lacrimal passage irrigation teaching model to solve the technical problems in the background art. The technical scheme adopted by the invention is a lacrimal passage irrigation teaching model, comprising the following steps: An eye model provided with a lacrimal duct and a nasolacrimal duct; The on-off mechanism is arranged on the lacrimal duct and used for controlling the lacrimal duct to be in a communicating or blocking state; the adjusting mechanism comprises an annular shell arranged at the lower side of the nasolacrimal duct, an elastic rubber cylinder communicated with the nasolacrimal duct channel is arranged in the middle of the annular shell, a plurality of circumferentially distributed elastic sheets are arranged at the bottom of the annular shell, the upper ends of the elastic sheets are obliquely arranged towards the axis of the elastic rubber cylinder, and a slip ring used for pushing the elastic sheets to move is longitudinally and slidably arranged in the annular shell. In a preferred embodiment, the lacrimal duct comprises two canaliculi and a lacrimal manifold, one above the other; The number of the on-off mechanisms is three, and the on-off mechanisms are respectively arranged on the two lacrimal canaliculus and the lacrimal header pipe. In a preferred embodiment, the on-off mechanism comprises a rectangular frame, and an extrusion block for plugging the lacrimal duct is slidably arranged in the rectangular frame. In a preferred embodiment, the eye model is further provided with an operating mechanism; the operating mechanism comprises a shell, a sliding block is arranged in the shell along the axial direction of the tear header pipe in a sliding manner, a push rod extending into the shell is arranged on the extrusion block, a first elastic piece is arranged between the push rod and the rectangular frame, and an inclined surface is machined on one side, close to the push rod, of the sliding block; The on-off mechanisms on the two lacrimal canaliculi are positioned on the same vertical plane; When the sliding block is aligned with the ejector rod, the extrusion block extrudes the lacrimal duct to seal the lacrimal duct. In a preferred embodiment, the annular shell is fixedly provided with a circular ring, the outer surface of the circular ring is provided with a threaded section, the inner side of the slip ring is in threaded connection with the threaded section of the outer surface of the circular ring, the top of the annular shell is rotatably provided with a gear ring, and the lower side of the gear ring is connected with the circular ring through a telescopic rod. In a preferred embodiment, the bottom of the shell is rotatably provided with a first gear meshed with the gear ring, and the bottom of the sliding block is connected with a rack corresponding to the first gear. In a preferred embodiment, a pull rod is mounted on the side wall of the sliding block, and the pull rod extends out of the shell and is connected with a handle. In a preferred embodiment, a first drainage tube is connected to the bottom of the nasolacrimal duct, and a first measuring cylinder is connected to the lower end of the first drainage tube. In a preferred embodiment, a sliding rod is slidably mounted at one end of the shell, close to the lacrimal canaliculus, a second elastic piece is arranged between the sliding rod and th